An entire body of philosophy according to the principles of the famous Renate Des Cartes in three books, (I) the institution ... (II) the history of nature ... (III) a dissertation of the want of sense and knowledge in brute animals ... / written originally in Latin by the learned Anthony Le Grand ; now carefully translated from the last corrections, alterations, and large additions of the author, never yet published ... by Richard Blome. Institutio philosophiae secundum principia D. Renati Descartes. English Le Grand, Antoine, d. 1699. 1694 Approx. 5833 KB of XML-encoded text transcribed from 444 1-bit group-IV TIFF page images. Text Creation Partnership, Ann Arbor, MI ; Oxford (UK) : 2008-09 (EEBO-TCP Phase 1). A50014 Wing L950 ESTC R20857 12358474 ocm 12358474 60175 This keyboarded and encoded edition of the work described above is co-owned by the institutions providing financial support to the Early English Books Online Text Creation Partnership. This Phase I text is available for reuse, according to the terms of Creative Commons 0 1.0 Universal . The text can be copied, modified, distributed and performed, even for commercial purposes, all without asking permission. Early English books online. (EEBO-TCP ; phase 1, no. A50014) Transcribed from: (Early English Books Online ; image set 60175) Images scanned from microfilm: (Early English books, 1641-1700 ; 215:4) An entire body of philosophy according to the principles of the famous Renate Des Cartes in three books, (I) the institution ... (II) the history of nature ... (III) a dissertation of the want of sense and knowledge in brute animals ... / written originally in Latin by the learned Anthony Le Grand ; now carefully translated from the last corrections, alterations, and large additions of the author, never yet published ... by Richard Blome. Institutio philosophiae secundum principia D. Renati Descartes. English Le Grand, Antoine, d. 1699. Blome, Richard, d. 1705. Kip, Johannes, 1653-1722. Gucht, Michael van der, 1660-1725. Lens, Bernard, 1659-1725. Freman, G. [31], 403, [3], 263 p., [100] leaves of plates (1 folded) : ill. Printed by Samuel Roycroft, and sold by the undertaker Richard Blome [and 10 others], London : 1694. Translation of: Institutio philosophiae secundum principia D. Renati Descartes. "The whole work illustrated with almost an hundred sculptures dispersed to such places as best admit thereof: all designed, drawn and engraven historically by good artists" The plates are variously signed by Kip, Gucht, Lens, and Freman. Reproduction of original in University of Michigan Libraries. Imperfect: film lacks pt. 3. Created by converting TCP files to TEI P5 using tcp2tei.xsl, TEI @ Oxford. Re-processed by University of Nebraska-Lincoln and Northwestern, with changes to facilitate morpho-syntactic tagging. 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Philosophy -- Early works to 1800. 2006-12 TCP Assigned for keying and markup 2007-02 Apex CoVantage Keyed and coded from ProQuest page images 2007-03 Jonathan Blaney Sampled and proofread 2007-03 Jonathan Blaney Text and markup reviewed and edited 2008-02 pfs Batch review (QC) and XML conversion To her Royall Highness the Illustrious Princess Ann of Denmarke &c. w : : This Plate in all humility is humbly Dedicated by Rich : Blom Clare et Distine té . G. Freman Inv. I. Kip Sculp . AN ENTIRE Body of Philosophy , According to the PRINCIPLES Of the Famous RENATE DES CARTES , In Three Books : I. The INSTITUTION , in X. Parts ; 1. Logick . 2. Natural Theology . 3. Daemonology , or of Created Spirits . 4. General Physicks , or Natural Philosophy , generally considered . 5. Special Natural Philosophy , of the World and Heaven . 6. The Four Great Bodies , Earth , Water , Air and Fire , and what have their rise from them ; where , of Metals and Meteors . 7. Of Living Things in general , and in particular of Plants and Animals . 8. Man , in respect to his Body . 9. Man , as to his Mind or Soul. And , 10. Ethicks , or Moral Philosophy , treating of Man's right Ordering his Life . II. The HISTORY of NATURE , which Illustrates the Institution , and consists of great Variety of Experiments relating thereto , and explained by the same Principles , in IX . Parts , 1. Of Bodies . 2. Of Qualities . 3. Of the Earth and Heaven . 4. Of the Earth , Water , Fire and Air. 5. Of Things dug out of the Earth . 6. Of Meteors . 7. Of Plants . 8. Of Animals . And , 9. Of Man. III. A Dissertation of the Want of SENSE and KNOWLEDGE in BRUTE ANIMALS , in II. Parts , giving a Mechanical Account of their Operations . Written Originally in Latin by the Learned ANTHONY LEGRAND . Now carefully Translated from the last Corrections , Alterations , and large Additions of the Author , never yet Published . The Whole WORK Illustrated with almost an Hundred SCULPTURES Dispersed to such places as best admit thereof : All designed , Drawn and Engraven Historically by good Artists . Besides the FIGURES or SCHEMES for the Explanation of the Philosophical Parts that require the same . Endeavoured to be so done , that it may be of Use and Delight to the Ingenious of both Sexes . By RICHARD BLOME LONDON : Printed by Samuel Roycroft , and Sold by the Undertaker Richard Blome , dwelling in New Weld-street , at the Green Pales , near Clare-Market : And at these Booksellers following ; Mr. Horn and Mr. Southby by the Royal Exchange ; Mr. Chiswell , Mr. Clavell and Mr. Brome , in S. Pauls Church-yard ; Mr. Tonson , in Fleetstreet ; Mr. Saunders , in the New Exchange ; Mr. Gilliflower , in Westminster-Hall ; and Mr. Richards , at the Bible , the Corner of Essex-Street , against S. Clements Church . MDCXCIV . TO THE Right Honourable , and Truly Noble , HENRY Lord Viscount Sydney of Shepey , Baron Milton , Lord Lieutenant of Kent , Constable of Dover Castle , Lord Warden of the Cinque Ports , Master General of Their Majesties Ordnance , Colonel of Their Majesties First Regiment of Foot Guards , one of the Gentlemen of His Majesties Bedchamber , and one of the Lords of Their Majesties Most Honourable Privy Council , &c. My Lord , I Am not unsensible that some part of the World , when they shall see your Lordships Name affixt to this Book , will be apt to say , That my inducements for laying it at your Honours Feet , are those generally made use of by Authors ; to wit , the necessity of an Illustrious Patronage to defend the Work against the assaults of Envy and Ignorance : But I must beg leave to assure your Lordship and the World , that the true Reason for this my Dedication , ariseth from a well-grounded Belief , and the general concurrence of the Learned Part of this Nation , that your Honour is the properest Person to patronise a Work of this Nature , having by all the Actions of your Admired Life fully convinced the World , that you only are the absolute Master of the whole Body of PHILOSOPHY ; and I my self have ever held it as a reasonable Position , That the Works of the Learned , like the Actions of the Noble , ought only to be judged by their Peers ; nor can I think your Lordship , or any Learned Person will say , that a virtuous desire of Knowledge ( and such I humbly conceive is Philosophy ) needs or wants a Protection from any , since 't is an experienced Truth , That Virtue carries her own Safeguard , as well as her own Reward . But as to the Subject Matter of this Book , and the method of handling it , I shall not say any thing , but refer your Lordship to the Book it self , of which your Honour is so great a Judge ; having in my memory , the admonition of Apelles to Alexander the Great , speaking improperly of the Noble Art of Painting ; In things you understand not , says that Great Artist , be alwaies silent , lest by speaking , you betray a want of Judgment . But as for the Designing and Engraving the SCULPTURES which Imbellishes this Work , things more properly mine , than any other part of the Book , and in which through Practice and Experience I may be allowed to have some knowledge ; I must beg leave to assure your Lordship , that they are , if not accurately , at least elaborately done ; and had I not been therein concern'd , might have ventured to have said , they are the best over made publick in this Nature and Nation . And if they be so happy as to contribute in the least ●o your Honours Satisfaction , or Entertainment , I shall thereby be abundantly rewarded for all my Care , Charge and Trouble ; for the very White at which I ainted , both in publishing this Book , and writing this Epistle , was to have it in my power to declare to your Lordship , that the ultimate of my Ambition is to serve you whilst I Live , and when Dead , to be recommended to Posterity under this desirable Character , That I had the happiness to be known to your Honour , who is allowed by all the Judicious , to be the Glory of the Age you live in , and to excel all that have gone before you , and to stand a Great , Noble , and hardly to be pattern'd Example to those that shall succeed . And of You , most Noble Sir , 't is with more Truth than Complement said , that HENRY Lord SYDNEY doth abundantly surpass both in Wisdom and Heroick Performances , the so much famed Sir PHILIP SYDNEY ( whom , the Age he lived in , thought worthy to be a King ) and ▪ that in times to come they will mention his Alliance to you , to aggrandize his Character . Nor are these , my Lord , half the Hecatombs of Praise offered up to your great Merit , by the grateful and understanding part of Mankind ; nor one third of what I might justly say : But such is your Lordships great Modesty , to be equalled by nothing but your Courage , that you always decline hearing a recital of your Illustrious Actions , tho' you never omit any opportunity of performing them : And therefore I shall only beg leave to tell your Honour , with all due Deference to your Exalted Station ; that there is no part of the World which You have graced with Your Presence , and obliged with Your Goodness , is , or can be more truly sensible of what they owe You , or more willing entirely to sacrifice their All to your Lordships Service , than the Publisher of this Work ; who is , may it please your Honour , with the most profound Respect imaginable , My Lord , Your Honours most Obliged , and most Humble Servant , Richard Blome . THE EPISTLE TO THE READER . BY my indefatigable Labour for these twenty Years , I have employed my time , with no small Expences in the Printing of several Volumes , not only Vseful , but Honourable to this Nation , which have met with a kind Reception from the Nobility and Gentry , some of which I shall here give the Reader a short account of , as having a small quantity of each remaining , which the Curious may be accommodated with . And this their Encouragement has emboldned me to undertake this Great Work in English , which of all Subjects , is the most wanting ; and the rather , because appearing in our Native Tongue , 't is thereby more useful for the Publick Good , and of more universal Benefit . For it seems a kind of Illnatur'd Retrenchment upon the common Freedom of Mankind to lock up all Ingenious Arts and Sciences from them , unless they are Masters of a Greek or Latin Key to open ' em . The Travel into PHILOSOPHY and true Wisdom , like the Commerce into the Rich Indies , should be declared Free , and of equal Right to all the Subjects of England , without incurring the Premunire of Interlopers . Tongues and Languages , I confess are a fine and sumptuous Portico ; but then they are no more than a Portico . The Sciences to which they introduce , are the Main Mass and Body of true Learning ; and 't is somewhat of the hardest , that so fair a Pile should have that only Gate to enter at : Besides , not to instance how many , otherwise very ingenious Men , are hereby debarr'd the Study of Wisdom and Virtue , whilst couch'd only in a Language , which possibly their Education , or want of Leisure has not made them Masters of : Here 's a perfect Turkish piece of Cruelty ; for we thus make Learning an absolute Mahometan Mosque , whilst the whole Fair Sex are at once excluded from any part of their Devotion in it . And let me tell you , the most complaisant French Authors generally Print their Philosophical Books in their own Language , by which the French Ladies , to the Glory of their Sex , have arrived to a great perfection of Knowledge ; in which extraordinary Accomplishments , being able to discourse of the Heavens , the Motion of the Planets , and the Nature and Causes of Mundane Things , &c. beside the Improvement of Virtue , they have elevated their Conversation above the Common Rate of Feminine Eloquence , such as their descant upon Commodes , New Fashions , or the little Vanities , and have added no little Charm and Grace to many Profest Virtuoso's . And truly tho' we have at present set up our Standard against France , yet I could wish we might still continue one piece of Friendship , viz. our old Custom of following the Mode of France , in bringing that one French Fashion up , of making our Learning speak English to instruct both ours , and the Fair Sex. And altho' this Volume of PHILOSOPHY has been so well received in Latin by the Sale of several Impressions , yet for the making it more exact and perfect , I contracted with the Author Mr. Le Grand to make Additions thereunto ; so that by his large Additions and great Alterations throughout , it may be boldly said to be a New Book , and the best yet extant in any Language . My next business was to employ an able Translator and Supervisor ; which with the care of the said Mr. Le Grand , every thing throughout is rendred so facile , and adapted to the English Dress , as to be of Vse and Delight to all Persons . I have also Engraven the SCHEMES or FIGURES that were formerly in Wood , now on Copper : And for the adornment of the said WORK , have illustrated it with above 90 SCULPTURES , Historically and Poetically Designed , and Engraven by good Artists , relating to the several Subjects that best admit thereof : And have added an Explanatory INDEX or TABLE of the several SCULPTURES , that the Reader may the better know the meaning thereof . The SCHEMES or FIGURES are Engraven on three Copper Plates , two for those in the Institution , and one for those in the History of Nature , all numbred 1 , 2 , 3 , 4 , and so on as in the Plates , with reference to the Book by the Folio , and the said number in the Margent ; which said Plates of Schemes are to be placed at the beginning of the Book next the Preface of Mr. Le Grand , which gives you an account of the Work , and the Arms of the Benefactors to follow the Schemes . Richard Blome . An Account of some Volumes which the Curious may be accommodated with by me . The Gentleman's Recreation , in Two Parts , in large Folio . The first , of the Liberal and Mathematical Sciences ; which in a brief and clear Method treats of the Doctrin and General Parts of each Art , with Eliptical Tables engraven on Copper Plates , for the better comprehending the same . The Second Part at large treats of Horsemanship , Hawking , Hunting , Fowling , Fishing and Agriculture ; all being Collected from the most Authentick Authors , and the many gross Errors therein Corrected , with great Enlargements made by those well Experienced therein . And for the better Explanation thereof great variety of useful Sculptures , as Nets , Engins , Traps , &c. are added , for the taking of Beasts , Fowl and Fish , not published by any : Nothing material being omitted for the rendring them Compleat . The whole Illustrated with about 86 Ornamental Copper Plates ; in Folio . The History of the Old and New Testament , treating of the most remarkable Transactions therein , with good and useful Morals , for the better government of our Actions in all Conditions . To which is added , the Travels , Voyages and Lives of the Apostles ; with a large Historical Chronology of such Matters of Note that are related in the Bible : Collected and Translated by good Hands , from Authentick Authors . The whole Illustrated with about 240 Sculptures , of the most remarkable Passages , performed by good Artists , far surpassing any Collection hitherto done , to the end it may be the more acceptable to the Curious . This Work is Printed in Two Volumes in large Folio , of a fair Print , and chiefly designed for the Curious . The said Work is likewise Printed in large Octavo , with all the Sculptures , as designed for a more general Sale , for Youth , to Instruct them in the Historical parts of the Bible : Sculptures being lively Emblems , to imprint the same in their Memories . A useful Volume of Cosmography and Geography , in Two Parts , in Folio . The First , of the Arts of Cosmography and Geography , being a Translation of the much Esteemed VARENIUS . The Second Part is a Geographical Description of the World , from the Works of the Famous Monsieur SANSON ; with about a 100 Geographical Tables of the Kingdoms and Isles in the World , with their Chief Places , drawn from the Maps of the several Kingdoms , which illustrates this Work. And to this Impression are added the County Maps of England , drawn from those of Speed's in a smaller Scale . THE PREFACE . SECTION I. Of the Nature , Principles , Object , Vse , Rise and Progress of PHILOSOPHY . What PHILOSOPHY is . PHILOSOPHY , according to its Etymology , is the love and study of Wisdom ; where by Wisdom we understand such a disposition of the Mind , by which Man is firmly inclined to have right Sentiments of the Things that occur to his perception , and to make a just Examination of the Actions that belong to his Life . For Wisdom doth not only direct the Understanding , and guide the Mind in the Contemplation of Truth ; but also inclines it to Honesty , and assists the Will in the prosecution of Vertue : So that Wisdom is indeed nothing else but a perfect Knowledge of all those things which it is possible for Man to know , and which may be both a Rule to his Life , and a Help to the Inventing of all Arts whatsoever . How it is defined . Whence PHILOSOPHY may be defined a Habit of the Mind , acquired by Study and Exercise from Inborn Idea's and self-evident Principles , enlightning the Understanding into the knowledge of necessary things , and perfecting the Will by Honest and Vertuous Actions . Of what kind the Principles of Philosophy are to be . Now to the end this Science may have these Effects , it is necessary that it be deduced from first Causes ; so that whosoever desires to be Master of it , must begin with an enquiry into these Causes : Because this is the first property of the Principles of Things , to be so clear and evident as not to stand in need of any proof of their Certainty , and to be raised beyond the reach of Doubting ; so that whosoever minds them , can't doubt of their Truth . Secondly , They are such on which other things depend , and without the knowledge whereof nothing of Certainty can be had . Wherefore tho' the first Causes of Things may be known , tho' the Things themselves be unknown ; yet it is impossible , but that when these are known , those must be likewise known ; because the Truth of these depends on the evidence of their first Causes . And accordingly whatsoever is demonstrated concerning them , without a self-evident Principle must needs be dark and uncertain . For as DESCARTES saith ; No Conclusions deduced from an unevident Principle , can be evident , tho' they should be deduced thence with the greatest Evidence imaginable . What is the Object of Philosophy . It is not only one Genus , or general Head of things , that is the Object of PHILOSOPHY ; but she extends her self to all things which the Mind of Man is capable of knowing . And therefore Plato , as Ammonius tells us , called it The knowledge of things Human and Divine ; forasmuch as it doth not only consider Corporeal Things , but also contemplates the Supream Cause and Intelligences void of Matter , and enquires into their Attributes and Perfections . For this is it ( saith Cicero ) which dispels all dimness from the Eye of the Soul , and enableth us to see all things , whether Superior or Inferior , first , last , or middlemost . What is the Use of Philosophy . From whence we may gather the true Vse of PHILOSOPHY , and how many Advantages it affords us . For , first it helps the Soul to contemn those Transitory and Temporal things , to which from its Childhood it has been too much addicted , and raises its desires to things Heavenly and Eternal . Secondly , It assists us in the thorough search into our own Natures , in the knowledge of our Creator , and the attentive Consideration of his Works . Thirdly , Whilst it evidenceth Truth to us by clear and indubitable Demonstrations , it affords us extraordinary pleasure and delight , as displaying those things in a full light to us , which are hid from the greatest part of Mankind . Fourthly , It removes Wonder , which ever is the Companion of Ignorance , and gives us a clear Light , whereby to discern Great things from Small , and to esteem things according to their true Value . Fifthly , By the Exercise hereof we are prepared to know the several Objects we meet with more distinctly , and to judge of them with more Caution and Exactness ; for by the long continued Study of Philosophy we become more prudent and cautious in passing Sentence concerning things . Whence Philosophy had its rise . PYTHAGORAS was the first amongst the Ancients who assumed the Name of Philosopher , by way of Modesty , as condemning the Pride and Ar●ogance of others who would be called Sophi , that is , Wise Men. For this discreet Person was ●o sensible of our Ignorance , that he thought that that Title did beseem God alone , and could not de●ervedly be given to any Mortal . But because the Original of Wisdom and Philosophy is one and the same , which was many Ages before Pythagoras , we must look for it long before his time : Which if we do , we shall find that it could not proceed from any one else but God , the Father of Lights , from whom every perfect Good comes , and the Truth of all things is derived . Hence it is the Poets tell us , That Pallas or Minerva , the Goddess of Wisdom , was the birth of Jupiter's Brain ; intimating thereby that all Knowledge comes from GOD , and takes its rise from his Understanding . For it is certain that Adam , the first of Mankind , was a wise Man , forasmuch as he gave Names to Things , and taught his Sons the knowledge of the Stars , which he could never have done , if he had not been endued with Wisdom , and understood the Nature and Property of Things . How Philosophy has been transmitted to us from Adam . It is probable that this most excellent Gift of God , was handed from Adam by Methusalem to Noah , and from him , his Sons and Grandchildren , to the Chaldeans and Hebrews , who were famous for their Knowledge of many things , and from them to the Egyptians ; from the Egyptians to the Grecians , and from them to the Romans ; from whom , in process of time , the same was derived to the Northern and Western Nations . How some think it had its rise according to the Nature or scituation of Countries . Some that begin not the Pedigree of PHILOSOPHY so high as we do , tell us , That it had its rise according to the Nature or Scituation of the Countries where those lived who had the first Knowledge of it : Necessity , which is usually the first Mistress of Sciences , having taught them what were proper for their Needs . 'T was thus , say they , that the EGYPTIANS began to observe the Increase and Decrease of the Nile , and to make every Year a Prognostick of the Fruitfulness or Sterility of their Lands . And to part , with the more facility their Harvest , among those particular Persons who were to have their Shares thereof , they learnt the first Principles of Geometry . The ASSTRIANS , who inhabited vast and unclouded Countries , having nothing to hinder them from contemplating the Stars , were the first that observed their Motion ; and the CHALDEANS , who were amongst these People a king of Philosophers , found from this Speculation an Art of Foretelling things to come . In fine , The PHAENICIANS , who were Neighbours to the Sea , drew another Benefit from the Knowledge of the Stars , and addicted themselves to observe those which might be useful to Navigation ; in which they succeeded so well , that they found out that there was a fixed Point towards the Pole , the observation of which might be a Guide to Pilots . SECTION II. The Chief and most Celebrated PHILOSOPHERS . THALES . AMongst those who are most Celebrated for Philosophy , THALES the Milesian , so called from Miletus the Capital City of Ionia , in which 't is said he was born , 639 years before Christ , is accounted the first . He was a great Astronomer , and the first that observed the Solstices and Equinoxes . His Opinion was , That Water was the Principle of all Things . ANAXIMANDER . The Successor of Thales was ANAXIMANDER , who was also Born at Miletus , and the first Founder of Founder of the Ionick Sect. He distinguished the Four Elements , placed the Earth in the Center , and by the scituation he gave them , was the first that erected a kind of System of the World. Strabo and Laertius assure us , that he was the first also that made Maps . He never determined , as Thales , which of the Elements was the Principle of Natural things , but concluded it to be Immense . ANAXIMINES followed Anaximander , being also Born in the same City . He owned Infinite Air to be the Principle of all Things . His Disciple was ANAXAGORAS of Clazomene , who was the first that brought Philosophy from Ionia to Athens . He declared Matter and Spirit to be the first Principles ; that at the Beginning all Things were in Confusion , and that it was the Spirit that separated , distinguished and establish'd them in that beautiful Order wherein we see them . Anxagoras his Scholar was ARCHELAVS the Athenian , who was the Assertor of Similar Parts , and held Heat and Cold to be the Principles of all Things . To these also may be added , HERACLITVS the Athenian , who maintained that the first Principle was Fire : And DEMOCRITVS the Abderite , who would have it to be Atoms . These were of the Ionick Sect. In the Preface Philosophers G. Freman . Inv. I. Kip Scul . To the Right Noble Frances Teresa Stuart , Dutchess Dorvager of the High borne Prince , Charles Stuart Duke of Richmond and Lenox , Earle of March , Litchfield , & Darnley , Baron of Leighton , Bromsrvold , Nerobury , Torbolton , and Metheuen ; Hereditary Ld. High Chamberlaine , and Ld. High Admirall of Scotland , &c. a Ld. of Aubigny in France , Grandee of Spaine and Knight of the most Noble Order of the Garter &c. a This Plate is humbly Dedicated by Richard Bloine . SOCRATES . SOCRATES , who was Born at Athens 468 years before Christ , leaving the Study of Natural Philosophy , wholly addicted himself to Ethicks . Accordingly Tully , in the Third Book of his Tusculan Questions , tells us , That all that Philosophy which undertakes the Conduct of Life and Manners , was derived from Socrates ; and therefore saith , That he had called down Philosophy from Heaven , to take up its abode in Cities and Houses . PLATO . PLATO , an Athenian , was born in the year 427 before Christ , and for his extraordinary Learning and wonderful Sagacity in the searching out of Truth , had the Name of the Divine Philosopher bestowed upon him . His School set about with Trees was in the Suburbs of Athens , first called Ecademia , from one Ecademus the Possessor of it , and afterwards Academia , which gave the Name to his Sect. He concluded God , Idea and Matter , to be the Principles of all Things . Concerning his Opinion of these Idea's , the Learned are much divided . Some would have him hold that they are Eternal Substances , Forms existing from themselves , and distinct from the Knowledge of God , as Models quite separated from him , and such as upon which he forms the Ground of his Work. But others are of another Judgment , declaring that in his Doctrin the Idea of the World is no other thing than the Image the Creator has formed . As for Matter , he suppos'd it to be void of all Form , and that before the Creation of the World it was a kind of Chaos , yet capable of all Forms : And forasmuch as it hath a Disposition whereby it may be distinguished into divers Bodies , which disposition he makes to be nothing else than a Pyramidal , Cubical , or other kind of Figuration , of the least and invisible Particles of which the Elements are compounded ; He consequently asserts , that Pyramidal volatile Particles constitute Fire ; that Cubical and subsiding Particles make Earth ; Octahedrical or Eight corner'd , Air ; and Eicosahedrical or Twenty corner'd , Water . ARISTOTLE . ARISTOTLE , the Son of Nichomachus , Born at Stagyra in Macedonia 383 years before the Birth of Christ , differed much in his Sentiments of Philosophy from his Master Plato , who therefore compared him to a Colt kicking his own Dam. He had the Liceum for his School , a House near Athens , which had been Apollo's Temple , built by a certain one called Licus . Here his Disciples Disputed Walking , from whence that place , according to the Greek word for it , was called PIRAPATVS , and they themselves PERIPATETICKS . This Philosopher became Famous by being the Praeceptor of Alexander the Great , as well as by his sharp Wit , and the great number of his Writings . He held Matter , Form and Privation to be the Principles of all Natural Beings . ARCESILAUS . ARCESILAVS of Sardis in Lydia , flourish'd in the Year 297 before Christ , and Taught at Athens , where he was the Author of a Sect called in after Times the Middle Academy , to distinguish it from the Old Academy , which begun with Plato ; and from the New , which was instituted by Lacides of Cyrene , as will be presently declared . He asserted that there was no Certainty , but only a bare Probability in the Knowledge of Things ; so that he thought we might equally hold Pro and Con upon all Subjects , and therefore would never determine , but always suspended his Judgment . LACIDES . LACIDES the Cyrenean , newly mention'd , Taught in the same School some years after Arcesilaus , and was the Head ( as I said ) of the Sect which was called the New Academy . He acknowledged that something was highly probable , at least that one thing was more probable than another , and accordingly determin'd ; but was not sure that any thing was absolutely True. PYRRHO . PYRRHO of Elaea , was also the Founder of a New Sect , that is , a New manner of Philosophizing ; for he had no Dogma's at all , as believing that nothing was true or likely , that is , so much as probable . He went beyond the Academicians : For whereas they comprehended ▪ that Nothing could be comprehended , he did not comprehend that . His Followers were called EPHECTICI , from their withholding their Assents : SCEPTICI , from their Considering and Canvasing : ZETETICI , or Seekers , from their Search and Enquiry : And APOZETICI , from the continual Doubts and Difficulties they were used to object to the Dogmatical Philosophers . ZENO . ZENO the Citian had his School at Athens in a Painted Gallery called Stoa , whence his Diseiples had the name of Stoicks . Vertue was the Sovereign Good in his Morals , and he is famous for that Constancy he inspired into his Followers in the extremity of Affairs . They would never confess Pain to be an Evil. He held the first Matter to be destitute of all Qualities , as of Heat , Cold , &c. as also without any Form , Shape , or Figure . He supposed that besides the World , there was a certain infinite Space altogether void and empty , in which the World after its Conflagration might be resolved . He asserted two Principles , viz. God and Matter , without which nothing could subsist . EPICURUS . EPICVRVS was Born at Athens 257 years before Christ . He kept his School in some Gardens in that City , and was the Author of a peculiar Sect. He Taught , as well as ZENO , the love of Vertue ; but that only for the Pleasure of it , and in that Pleasure he comprehends that of Sense , as well as that of the Soul ; maintaining , That a Wise Man could not be happy , if he enjoyed not all Pleasures Mankind was capable of . In this he did not so well explain himself , but that he gave occasion of raising Doubts concerning his true Conceptions ; some believing them to be Innocent , whilst others , and those the most numerous , think otherwise ; insomuch that the Epicureans are now generally look'd upon as too Sensual . The rest of his Morals , concerning God , Providence , and the Soul , are also much blamed . He took from DEMOCRITVS the Principle of his Physick , adding thereto the declension of Atoms , with a motion of Weight . His Opinions were , That nothing was without Beginning or End , but Atoms and empty Space : That the Universe always abides unchangeable in the Whole , tho' as to its Parts it be variously altered . He endeavours to prove the necessity of an Empty Space from Motion , and asserts , that the World shall some time or other be dissolved by the force of Nature . GASSENDUS . The Famous PETRVS GASSENDVS , Mathematick Professor in the University of Paris , Born in Anno 1592 , hath endeavoured to Amend and Perfect the Epicurean Philosophy , especially by refuting its Errors concerning God , Providence , the Souls Immortality , &c. and by a cautious Explication of such of his Opinions in Natural Philosophy , which tho' not utterly condemned , yet not being sufficiently proved , but Doubtful and Slippery , might be an occasion of falling into Error . DESCARTES . After all these was Born RENATVS DESCARTES , at la Haye in France , of a Noble and Ancient Family , in the year of our Lord 1597 , who by a Method , before his Time but imperfectly known , restored Philosophy from the very Foundations , opening a sure and solid Way to Mankind into the inmost Recesses of Nature . He was of such a singular Genius , that he alone discovered more Philosophical Truths , than ever were discovered in all foregoing Ages . We do not go about here to give any Instances of his Philosophical Sentiments , since this whole Work contains nothing else , but his Opinions , or what may clearly and distinctly be deduced from them . SECTION III. The Parts of PHILOSOPHY , and the Design of this whole Work. Of the Parts of PHILOSOPHY . PHILOSOPHY is commonly divided into Three Parts , viz. First , Into METAPHYSICKS , or NATVRAL THEOLOGY , which proves the Being of a God , or First Cause , on whose existence all Truths depend , and without the knowledge of whom no Science can be had . Secondly , Into PHYSIOLOGY , or NATVRAL PHILOSOPHY , which comprehends the Principles of Material Things , considers the Original of the World , and enquires into the Parts whereof it doth consist ; and afterwards descends to consider the Form , and Qualifications of the Sun , Stars and Planets ; the force and vertue of the Air , Water , Fire , Fossils , or things dug out of the Earth , as Metals , &c. And lastly , Enquires into the Nature of Plants and Animals , and more especially of Man , who is a Compendium of the Universe ; and lastly into MORAL PHILOSOPHY , or ETHICKS , which searches into the Nature of Good ; discovers what Manners are honest and becoming , and directs and governs all our voluntary Actions , according to the Rule of Right Reason . But to the end that in the handling of Philosophy the Modus ( that is , the Natural Way and Order ) of Science may be observed , I have rather thought fit to distinguish Philosophy into Ten Parts , that by this Division my Discourse might be more Methodical , and avoid the Confusion which is incident to the former Partition . LOGICK , the First Part of Philosophy . I thought fit therefore to make LOGICK the First Part of my Discourse , it being the Organ or Instrument of all PHILOSOPHY , and very necessary to the attaining of all Sciences . Because I never esteemed any thing more valuable in Man , than a good Mind or Understanding , whereby he is enabled to unfold the Natures of Things , and to discern Truth from Falshood . For all other Gifts of the Mind have their Bounds , and are only determin'd to some particular Offices : But the Rectitude of the Understanding is conducive to all the Vses of Life ; and is not only profitable in the dispatch of Business , but for the attaining of Arts and Sciences . For this Reason it is that I have begun this Philosophical Treatise with LOGICK , which is the Art that Teaches the right use of Reason , and how Man ought to manage his Thoughts in the knowing and judging of Things . And forasmuch as the Mind of Man is subject to many Errors , and is biast for those Opinions it has embrac'd during Childhood , having premised something of the Vsefulness of LOGICK , I take occasion to advise every one carefully to avoid the Prejudices of Infancy , and not to admit any thing for Truth , but what clear and distinct Perception hath manifested to be such . For he judgeth wrong who doth not give heed to his Conceptions , and compriseth more in the Conclusion , than he had perceived in the Premisses . For the avoiding of this Praecipitancy , I first examin the simple Terms of Things , and briefly enumerate those Notions of which our Thoughts are compounded ; afterwards I set down a Scheme of Substance , and its Attributes , by which it is more distinctly understood and distinguish'd from the Modes that belong to it . To this end it will be of great use attentively to consider the Genealogy of Things and Modes ; as also the Imposition , Signification , Definition and Use of Names . But because it is not sufficient to have Idea's of Things , except we know also whether they be simple , or resolvable into other Parts : I have added the Chapter of Definition and Division , by which means all Confusion may be removed , and the Nature of every thing , and its distinction from others more clearly known . After the clear Perception of Things , I come to the Judgment we are to make of every Thing ; and in so doing , I proceed from simple Things to those that are Compound , and as it were from the first Step of Logick to the second . The Sum whereof is this ▪ That in our search of Truth , we never give our Assent to any thing which doth not exactly answer to our Perception : For it is not enough that Truth be in this or the other thing , except the same do appear to us , and we be fully convinc'd of its Certainty . For I take him to know nothing at all , who relies only upon the Authority of others , and is led by their Judgment , without hearkning to his own . After this , I proceed to the Explication of a Syllogism , which is made up of divers Judgments that are found of them . Now whether Syllogisms are of so great use towards the acquiring of Sciences , as in the Schools they are boasted to be , I dare not assert , seeing that the greatest part of those Errors Men fall into are much more caused by their using of false Principles , than by their not observing the Rules of Good Reasoning . However , they must be acknowledged to have their Use , as being very helpful for the exercise of Wit , and more especially for those , who through overmuch Subtilty , or want of due Attention , suffer themselves to be deceived by false Consequences , and to be led into Error . That which concludes this Part of PHILOSOPHY , is METHOD , which is the chiefest Part of Logick , and without all Controversie the most useful . For it being that Judgment of the Mind , by means of which whatsoever belongs to a whole Science is fitly and rightly disposed and digested ; it is extreamly conducive to the discovering any Truths we are ignorant of , or to the convincing of others of those we know already . This Method in particular is either Genetical or Analytical , in both which the true Practice of Logick is perfected . The Second Part , is of GOD. But forasmuch as all our Knowledge is uncertain , as long as the most perfect Being , from whom all others do proceed , is not known to exist ; therefore I begin the Second Part of this Treatise with the Existence of GOD. This I evince from the Idea we have of him which represents a Being absolutely perfect , wise , and powerful . For 't is a Contradiction , that that which includes all Perfection should not be necessarily Existent , seeing that Existence is a vow'd Perfection , which therefore can't be absent from a Being absolutely Perfect . And therefore as we clearly understand , that in the Idea of a Triangle is contain'd , that its three Angles are equal to two right ones ; so we find , that in the Conception of GOD is involved Necessary and Eternal Existence . From hence we duly infer , that GOD is the Creator of all things , not only in respect of their Existence , but also of their Essence : So that even the Propositions of Eternal Truth do depend on this first Truth , and are no farther True than as they are determined thereby . The Existence of GOD being demonstrated a priori , I proceed to lay open his Attributes , which by necessary consequence follow from it ; since it is impossible but the supream Being must include Unity , Eternity , Omnipotence , Immensity , Beneficence , Providence , &c. The Third Part ; Of Intelligences and Daemons . Having thus examined the Nature of GOD , and inquired into his Perfections according to the measure of our weak Understanding , the next in order to be considered , are the INTELLIGENCES and DAEMONS , whose Existence , as far as it can be reached by Natural Light , I have endeavoured to demonstrate : And afterwards proceeding to their Faculties , have shewed them to be endowed with Understanding and Will : And because there is no small Dispute betwixt our Divines and the Talmudists , concerning their Number , Distinction and Subordination , I have barely set down their Opinions without adding any thing of my own . Thence I pass to the Power they have to assume Bodies ; and add something concerning the Care and Concern they have for Mankind , which I briefly confirm from Texts of Scripture and Reasons deduced from their Natures . The Fourth Part ; Of Natural Philosophy in general . It being proved that there is a GOD , by whose Power the Angels and all Things are produc'd , and that it is repugnant to his Nature to deceive us : We are sure that we can't be mistaken in those things which are clearly and distinctly known by us ; and therefore seeing we have clear and distinct Idea's of Bodily Things , which we are not the Causes of , as being often represented to us whether we will or no ; I thence infer , they must needs proceed from Objects without us , which really and actually exist in the World. For otherwise , if GOD should immediately impress such Idea's on our Minds , or cause them to be conveigh'd from Objects in which there was nothing of Extension , Motion , or Figure , it would follow that he did impose upon us ; and therefore we must conclude , that there is a Substance extended in length , breadth and depth , or thickness , which we call Body , and is the Object of this Fourth Part. For all things that are handled in Physiology belong to Body , as its Forms or Affections . Let not any one wonder that I exclude all substantial Forms from a Body , or extended Matter , since they are so obscure that they can't be explain'd , no nor so much as conceived by those very Men who are the great Patrons of them . Whereas on the other hand , nothing is more obvious and agreeable to our Senses , than to assign the Effects o● Nature to the different Magnitude , Figure , Position , Motion , and the Rest of Bodies . Who is so stupid as not to apprehend these Principles ? Is it not better to explain Things by Causes known and obvious to all , than to have recourse to some Principles , which none understand , and which are as dark and difficult to those that teach , as to those that learn them ? It is folly to admit any thing in PHILOSOPHY which no Body could ever yet comprehend , no , nor I dare boldly say , ever will be comprehended . If we admit that Material Substance consists in a Threefold Dimension , and that it can't be distinguished from Extension , save only by Reason or a Mental separation ; it will be easie to demonstrate , that it is impossible for any Vacuum to be in Nature : That Rarefaction is only made by the intervening of New Matter : That the World is not circumscribed by any Bounds : That the Internal place of a Body , doth not at all differ from the Body it self ; and that the Heavenly Matter is of the very same Nature with the Inferior and Sublunary . Forasmach as that which the Philosophers call Quantity , is not the precise extension of the Body , but only its extension as such ; that is , with respect to its being commensurate to such a number of Inches , Feet , Yards , &c. it being apparent that a Body retaining the self same quantity , may be further extended in length and less in breadth , or on the contrary . As Matter hath some Essential properties , viz. Divisibility , Figure , Mensurability , and Impenetrability ; so likewise it has some common Accidents , viz. Rarefaction , Local Motion , Heaviness , Lightness , Hardness , Softness , &c. which are not in it , as so many distinct things ; but only as Modes , which can't be separated from the Body ; and if they could , they would be no longer called Modes , but Substances , whose peculiar property it is to exist by themselves , and independent of any Subject . And seeing that as all the diversification of Matter , or the variety of its Forms , depends on Motion , by which the Matter is divided into Sensible and Insensible parts , I clearly make out , that the Three Elements of the World had their rise thence . Then having shewed that a Body hath no power to move it self , I make it appear , that all those Motions , which by the Peripateticks are commonly attributed to the prevention of a Vacuum , are occasioned ; because all Motion of Bodies is in a manner circular , one succeeding in the place of another . Then I proceed to the determination of Motion , whether simple or compound , treat of Reflection and Refraction , of the Acting and Resisting power in Bodies , and wherein it consists . Afterwards of the state of Bodies , as to their Hardness , Fluidity , Rarity or Loosness of Parts , Closeness , Roughness and Smoothness , &c. where I shew , that there are Pores as well in fluid , as in hard Bodies ; and last of all give a hint , that the Ends of GOD are not to be searched into in Physiology , because it is an Argument of Rashness and Arrogance . And as for TIME , under which we consider the Existence of Created things , it is improperly said to be an Affection belonging to them , since indeed it is a meer Mode of Thinking , serving only to explain Duration , and distinguish the Parts of it . The Fifth Part ; Of the World and Heaven . Having thus laid those Foundations of NATVRAL PHILOSOPHY , I proceed to consider the Unity and Perfection of the World , and endeavour first to shew , that the Creation of it may be discovered by Natural Reason : That its Extension is immense , or rather indetermin'd , so as not to be circumscribed by any Figure , or Bounds : That the Matter of Heavenly and Earthly Bodies is one and the same ; and enquire at large what is the Form of the World , whether it be the Soul , that is , the Spirit of Nature , or the best disposition of Parts : And in the next place assert ▪ That GOD hath communicated to the Matter whereof the World is made , a determinate Measure of Motion , and doth preserve the same quantity in the same . Then pass on to examine the Action of Bodies , and the communication of Motion , and add some Rules by which we may know , what must of necessity happen in the meeting of Bodies . Then follow the Three noted Systems of the World , viz. The Ptolomaick , Tychonick , and Copernican , and after having rejected the two former , I with Descartes embrace the latter , as being more simple and better agreeing with the several Phaenomena of the World. Then shewing the Heavens to be fluid ▪ I go on to Evidence how they were disposed or rank'd at the beginning , and of what manner their Motions were , and what is the Action of the Heavenly Matter . And for a better understanding of the Celestial Motions , I define the Heavenly Globe with all its Circles , and their several Uses . Then examin the Nature of the Sun , the Adjuncts of Light and Luminosity . How Spots are generated about the Sun and the fix'd Stars , and vanish again . What Comets are , and how it comes to pass that fixed Stars are changed into Comets . Next to the Comets are the Planets , whose rise is shewed , together with the Principle of their Motion , and how they become Direct , Retrograde , and Stationary . Then the Moons motion is considered , with its various Appearances , and the Eclipses of it , as well as of the Sun. Next follows the Nature of the fix'd Stars , their Number and Constellations , and concerning their Influences , as well as of the other Stars , and what Judgment we are to make of Judicial Astrology . The Sixth Part ; Concerning the Four Bodies . Having thus taken some Turns in the Heavens , we return again to the Earth , to take a more exact Account of its Original parts and Figure , and the manner of its being moved in the fluid Heaven ; demonstrate also its Motion by Reason , and Answer the Objections made against it ; and then discover all the Vicissitudes of Night and Day , and the several Seasons of the Year , which proceed from the Diurnal and Annual motion of the Earth . Then take notice of the Five Zones , invented by Geographers , to distinguish the Variety of Heat and Cold in the several Parts of the Earth , occasioned by the nearness or distance of the Sun ; and the Climates made use of , for a more distinct Explication of the several Tracts and Regions of the Earth . Then proceed to the discovery of those Things which are generated in the Bowels of the Earth ; as Fountains , Metals and Minerals , Stones , Gems , the Load ▪ stone , and Electrical Bodies . After , speak of the Water , the Flux and Reflux of the Sea ▪ Of the Air , and its Elastick virtue . Then of the Meteors in general , and particular ; as of Winds , Clouds , Mists , Rain , Dew , Hoar-frost , Cool of the Evening , Snow , Hail , Thunder , Lightning , Coruscations , the Rain-Bow , Circles formed about Stars , and Mock-Suns . Then unfold the Nature of Fire , Heat and Cold : The most remarkable Effects of Fire , as the Effervescence of some Bodies , and the Turning of others into a Calx or Ashes , Earthquakes , Fermentation , &c. and last of all consider the Mixtion , Generation , Corruption , Alteration , Augmentation , and Diminution of Bodies . The Seventh Part ; Of Living Creatures . Having thus largely enough handled ( as I suppose ) Inanimate things , I proceed to those that are Living , and having premised their Distinction from Things without Life , I assert their Life to consist in a due Temperament of Heat and Moisture , and consequently that their Death proceeds from the contrary Causes of Cold and Dryness . Next I enquire into the Cause of the Hardness which is observed in the Outside of them , and of the difference of this Vital Heat in Living Creatures , and why the same is weaker in some , and more strong and durable in others . Then discover the Nature and Virtue of the Aliment or Food wherewith Living Creatures are Nourished , and how Living Things come to be changed by the diversity of Place and Time ; and then come down to Plants , and having explained their Parts , Original Nutrition , Growth , Difference and Propagation , I enquire into the Causes of their different Colour , Taste and Smell ; as likewise of their Perishing or Death . Lastly , I lay open the Nature of Animals , what the Souls of Beasts are , and then examin in particular the Nature of Fourfooted Beasts , Creeping Things , Birds , Fish and Insects , and wherein the Death of these consists . The Eighth Part ; Of MAN. After having taken a View of this Great World , I proceed to the Consideration of the Lesser World MAN , who may be defined a Compound of a finite Mind , and rightly disposed Body . But forasmuch as these two Parts are wholly of a distinct Nature , without any Analogy between them , I thought fitting to consider them each apart , and handle them distinctly , that the several Proprieties of each might be the better known . Wherefore I set down the description of the most principal Parts of Mans Body , both Internal and External ; give an Account of the Formation of the Birth in the Womb , and of its Animation ; as likewise of Nutrition , the motion of the Heart , Arteries and Muscles , and of the Circulation of the Blood. Then follows Respiration , and how the same is performed in Man ; and lastly , some things are added of the Increase and Decrease of Mans Body , its Temperaments , and different Ages . And forasmuch as the Senses do chiefly belong to Man , I treat first of the Senses in common , and shew that they are the Effect of the Nerves , and that the Soul of Man feels only , for asmuch as it resides in the Brain : Then I speak of the senses i● particular , viz. of Feeling , Tasting , Smelling , Hearing , and lastly having said something concerning the Eye and its Object , I Discourse concerning Sight , the most Noble of all the Senses , an● of the manner how it is performed , and shew how the Scituation , Distance , Magnitude and Figure of Bodies are thereby discerned ; and then add some Chapters of Waking , Sleep and Dreams ; ●he Appetite of Hunger and Thirst ; of the Common Sense , Imagination and Memory ; of Health and Sickness ; and lastly , of Medicaments in general , and their Operation . The Ninth Part ; Of the Mind , or Soul of Man. I look upon the Rational Soul as the Chief Part of Man , which excelleth the Body in its Nature and Functions ; I evince that the same is more evidently perceived by us than the Body , since we cannot doubt of its existence even at the very instant we are doubting of it : For it is a Thinking Being , not only potentially , as some conceive , but actually ; because Thinking can't be separated from it without the destruction of its Nature ; whence I Argue , that it is essentially distinct from Material things , which consist in extension , and consequently that it is Spiritual and Immortal . Now as to the manner of the Vnion of these two Substances in Man , I briefly assert , that the same consists in this , that the Functions of the Body depend on the Cogitations of the Mind , and they again on the Motions of the Body , which Miracle is the work of the All-wise and Omnipotent GOD alone , as the Immortality and Eternal duration of the Soul is the effect of his Good pleasure . I prove that there are inborn Idea's in the Mind of Man , especially of GOD , a Thing , Substance , general Maxims of Truth , Good , Equity , &c. and explain the four Faculties of the Mind of Man , viz. Understanding , Imagination , Will and Memory ; not as Things really distinct from it , but only as so many Modes , whereby it Understands , Imagins , Wills and Remembers . And because the Affections and Passions are the consequence of the close Vnion there is between the Soul and Body , I shall in the next place handle them , and endeavour to lay down in short their Nature , Causes and Effects ; and tho' there be many of them , and according to the variety of their Objects , are called by several Names , yet they have all of them but one and the same common Principle , to wit , the Animal Spirits , by the Motion whereof they are produced and strengthned . For all of them ( if we except Admiration ) are conveighed to the Brain , and are always accompanied with a peculiar dilatation of the Blood. I enquire also in what part of the Body the Soul entertains its Passions ; what Love is , what Hatred , what Joy , and what Sorrow . Lastly , I undertake to assign the Cause of those Inclinations which are peculiar to certain Persons , and to which some give the Names of Sympathy and Antipathy , which I deduce from those Motions , that by some external Cause are excited in the Body from its first Infancy , and are apt afterwards to awaken the same Thoughts in the Soul ; as on the other hand likewise the same recurring Thoughts produce the same Motions in the Body . The Tenth and last Pa●t ; Concerning the right Conduct of Life . Last of all , this PHILOSOPHY is concluded with a Discourse of the right ordering and guidance of Life , the Happiness whereof doth not consist in Bodily pleasures , the Goods of Fortune , or the Gifts of the Mind ; but in a firm unshaken purpose and resolution of well-doing , and in the satisfaction which thence ariseth . And because no Body can be said to do well , but he that acts according to Vertue , I proceed to the Explication of VERTVE in general , and unfold its Essence , shewing that it doth not consist in a Mean of the Affections , but in a constant pursuit of what seems best to Right Reason ; and then pass on to the several Species of it , viz. Prudence , Temperance , Fortitude and Justice , which are so many Foundations of Human Happiness . I have not thought it any Crime in the handling of them , to depart from the received Custom of the Schools , and to Exhort my Readers rather to Doing than Talking , as knowing that Vertues are not acquired by Questions or Divisions , but by Precepts or Rules for the Forming of our Manners . I have also added some Articles concerning the use of the Passions , which I conceive to be of no small Advantage to the obtaining of Human Felicity , as long as they continue under the Guidance of Reason , and without Transgressing any of its Laws . And forasmuch as all Vertue would be in vain , in case Man were deprived of Free-will , I endeavour to prove , that Man was created Free by God , and that his Praescience and Power , is no hindrance to Human Liberty , and that notwithstanding the same , a Man may exert Actions worthy of praise or reproach . But because these ETHICKS might appear defective without saying something concerning Human Actions , I thought fit to add a few things concerning the Duties , or Offices of Man in general , and of a good Citizen in particular ; wherein I first discourse largely enough concerning the Rules of Human Actions , whether they respect GOD , our SELVES , or our NEIGHBOVR , and tho' in these Three all Human Obligations seem to consist , yet have I not thought much to superadd to these some other Laws of Humanity , and Rules of Covenants and Contracts , whereby all Persons , whether they be in a publick or private Station , may be informed what they are bound to do , and which be the Offices and Duties of Human Life . Of the Means and Helps which conduce to Philosophizing . Altho' throughout this whole Philosophical Work I have endeavoured to observe a due Order , and to deduce subsequent Truths with all possible clearness from those that precede , yet I thought it would not be besides the Matter , if I should subjoyn some Rules for New Beginners in PHILOSOPHY to observe , in order to the Securing them from Error , and for the right conduct and guidance of their Reason . First Rule . First RVLE , That they lay aside all the Prejudices of their Infancy , and admit nothing for Truth , which they have not first discust and examin'd anew . Second Rule . Second RVLE , That they be not rash in their Judgments , but always abstain from Judging , as long as they have no clear and distinct Perceptions ; and that they neither affirm or deny any thing , except it be of Things that are clearly and distinctly known by them . Third Rule . Third RVLE , That they give great heed to the Question propounded , and warily consider , whether what they suppose themselves to have perceived , do necessarily follow from those Truths , which by a new Examination or Scrutiny they have found out . Fourth Rule . Fourth RVLE , To distribute the Difficulty they undertake to Examin into so many Parts , as is fitting for the more easie and commodious resolving of it . Fifth Rule . Fifth RVLE , So to dispose the Members of this Division , as to begin with those that are most simple and easie to be known ; observing therein the Order of Nature , as far as may be , and so by degrees proceed to the knowledge of such as are more difficult and compound . Sixth Rule . Sixth RVLE , To examine all the Parts singly by themselves , with so much Attention and Exactness , that they may be assured of having omitted none ; and especially minding , whether they do not oppose and contradict those first Truths and primitive Notions they have already discovered and clearly perceived . The Design of the HISTORY of NATURE . Thus having gone through the Book of the INSTITVTION , next follows the HISTORY OF NATVRE . For seeing that the Truth of the Principles of any Science is made manifest by the Evidence of its Deductions , and that their Certainty is look'd upon as Indubitable , if those Things that are Inferr'd from them , do wholly depend upon the knowledge of them ; I was desirous to try , whether the several Appearances of Nature , or all those Things which our Senses perceive to be in Bodies , did comport with the Principles laid in my INSTITVTION OF PHILOSOPHY , and whether there be such a Connection between them , as that tho' the latter may be Apprehended without the former , yet the former can never be Vnderstood without the latter . For tho' the Principles I make use of in the Explaining of Things Natural seem to be very plain , as being nothing else but the Magnitude , Figure , Motion , Rest , and Position of Bodily Things ; nevertheless I dare affirm , that in this NATVRAL HISTORY I have had recourse to no other Principles ; and that I have not only explain'd all those Effects , which by the Peripateticks are commonly look'd upon as the Miracles of Nature , without the Auxiliaries of Sympathy and Antipathy , or the assistance of occult Qualities ; but have also given a true and Natural Reason of them , so as to leave no room for doubting of their Certainty , especially if it be cousidered , how many Things concerning Bodies , Qualities , Metals , Animals , &c. are unfolded and cleared from so few and such simple Principles , which certainly could never so well cohere together , except they were true , and out of the reach of doubting . I confess I have chiefly taken upon me to explain the common Phoenomena , and such as most frequently occur ; yet must it not be thence inferr'd , that I can't with the same ease render a Reason of the more extraordinary , which do seldom happen ; since the Cause of all Effects is alike , and forasmnch as whatsoever we meet with in the World hath its Use and End from the same Principles . Wherefore I have generally forbore mentioning such as those , lest I should seem to stand in need of strange and uncommon things , to demonstrate the Certainty of my Principles , or to have recourse to Monsters and Prodigies to be my Witnesses of their Evidence . My Design therefore in this Work was , not to describe the whole HISTORY of NATVRE , or to comprehend in One Book all the Phoenomena of the Universe , since that would be an infinite Task ; but only to make out , that all the Things we see do perfectly well agree with the Principles I have establish'd in my INSTITVTION of PHILOSOPHY ; and that nothing is handled by the Philosophers of any Sects whatsoever , which is not accommodately , yea , more distinctly and clearly explained by these Principles . The First Part is , Of the Nature of a BODY . The First Part therefore I begin with is the Nature of a BODY , and at the very beginning endeavour to prove against EPICVRVS and the most Famous GASSENDVS , that there is no empty Space to be found between the Parts of Matter : That the Arguments and Experiments which they alledge for the proving of a Vacuum are to no purpose , and wrongly applied . And in the next place proceed to the Affections of Bodies ; where , after I have asserted the indefinite Divisibility of a Body , I lay down several Experiments of Bodies , Thin and Close , Hard and Fluid , Rough and Smooth , Transparent and Dark , Bended and Comprest , assigning the true Reason of their several differences . The Second Part is of Qualities . And forasmuch as Qualities do always accompany Material Substance ; and affect and determine the same in whatsoever State the same may be ; I was willing to demonstrate the true Nature of them by Experiments , shewing that they consist in Quantity , Motion , Figure , and Position of Parts ; which afterwards I make manifest by the Examples of Heat and Cold , Heaviness and Lightness ; Taste , Smell , Sound , Colour and other Affections of Bodies which strike our Senses . Which done , I discover those Effects which are commonly attributed to unknown Qualities , which they term Occult , and declare the Causes of them . The Third Part is , of the World and Heaven . Afterwards I proceed to the History of the WORLD and HEAVEN , taking my rise from the Beginning of the World , which is followed by the Generation of Things , and the Ordering of the several Parts of the World , with the end that threatens it from the Generation and Corruption of Things : After these come the Phaenomena of the HEAVEN , SVN , and FIXT STARS , and the Spots that appear in their Bodies : And next to these the PLANETS and COMETS : And then from various Examples enquire , whether they have any Power upon us , or Inferior Bodies , or Foretel any thing with Certainty , and declare what we ought to judge of these kind of Predictions . The Fourth Part is , of the Four Bodies . The Fourth Part is taken up by the Four great Bodies : First , The EARTH , which is almost to be look'd upon as nothing , if compared with the Universe : Next , the WATER , with its various Properties : Then the Rivers and Fountains , whose rise is discovered ; and after those the Sea , with the Cause of its Ebbing and Flowing : These being the Things that have not only troubled the Heads of the Philosophers of this Age , but also those of the Ancients , and forced them to betake their refuge to occult Qualities . Next to the Water , the Phaenomena of the FIRE are discovered , the Effects whereof are very different , as Earthquakes ( which don 't affect the whole Globe , but only some part of it ) Glass and Coals , which are produced by its Operations ; and many other Things are Explained , not only of those which are generated here with us on the Surface , but also in the inward Parts of the Earth . And lastly , the AIR brings up the Rear of the Elements , whose power and efficacy appears as well in Natural as Artificial Things . The Fifth Part is , of Fossils . And forasmuch as the Earth doth hide many Things in its Bowels , which deserve our Consideration , I have added something concerning FOSSILS , viz. Things dug out of the Earth in general : And first of Quicksilver , Brimstone , Salt , Gold , Silver , Tin , Lead , Brass , Iron , and other Minerals , whose Generation is no less wonderful than their Operations and Effects . This done , I proceed to the Stones , and having discussed their various generations , I examine their distinction and different Constitution : And lastly , consider the LOAD ▪ STONE , which tho' it be reckon'd amongst common Stones , and hath nothing of lustre , yet has very singular effects , and such as are astonishing to those , who do not own the Striate or Screw like Matter to be the Cause of them . The Sixth Part is , of Meteors . After this , I proceed to the discovering of the Phaenomena of METEORS , whose place as it is between the Earth and the Stars , so they seem to participate of both their Natures . First , I open the Nature of Vapours and Exhalations , and what goes to the forming of them : Then speak of the WINDS , which like wandring Travellers never rest . These are followed by Rain , Hail , Snow , Dew and Honey ; and then I declare the rise and effects of TEMPESTS and THVNDER ; also why LIGHTNING is so fierce , and why it seizeth hard Bodies without touching those that are soft . Amongst Meteors , the RAINBOW challengeth the first place , and other Fires kindled in the Air , which as they do more closely or loosly stick to their Matter , so they vanish sooner or later . The Seventh Part is , of Plants . After these comes the Seventh Part , concerning PLANTS , whose variety is almost infinite ; where first I discourse of their Parts , Virtues and Qualities , whether hid or manifest , that are common to every Plant. Then I explain the Sympathy and Antipathy of some of them , adding something of their rise , nutrition , germination and decay , as much as may seem sufficient not only to under stand their Phaenomena , but also their whole Nature . The Eighth Part is , of Animals . I begin my Treatise of ANIMALS with those that are begot of themselves , or as others will have it , begot of putrefaction , and from them proceed to Animals that are produced from Seed . And having enquired into the Cause of MONSTERS , I speak concerning their different Time in bringing forth ; and then passing over to their Affections , I search into the Causes of HVNGER and THIRST , and of the CIRCVLATION of the BLOOD ; and then consider what it is in them that is the Principle of such various Operations , and make out that they are performed in them Mechanically , without any perception or knowledge ; why some of them hate , and others love one another ; and lastly , why some sleep more , and others less ; and why they are subject to different Diseases . The Ninth Part is , of MAN. This whole History is concluded with MAN , who in the becoming Form of his Body excells all other Creatures of the World , as well as he exceeds them by his Reason , Understanding , and his Soul or Mind : For tho' he makes use of the same Organs of the Senses , with other Animals ; yet he doth not perceive the Objects of them as they do , since Sensation is a kind of Cogitation in him , which is not compatible to Brutes . And thus having explained some Experiments concerning Feeling , Tasting , Smelling , Hearing and Seeing ; I proceed to Imagination and Memory , and lay open the Cause of Sleep and Dreams . And lastly , having described the Causes of Passions that outwardly appear , I Conclude this my Natural History , with the peculiar Natural propensions and aversions of some Persons , the Original whereof tho' of long time hid , is now made plain and perspicuous . The Design of the Discourse , concerning the want of Sense and Knowledge in Beasts . The Third and Last Book , is of the want of SENSE and KNOWLEDGE in BEASTS ; where , tho' from the Beginning of the World it hath been the Common received Opinion , that Brute Beasts are endowed with Sense and Knowledge , and consequently that they are but gradually distinguish'd from Men , yet I make no scruple in this Discourse , to deprive them of those Operations , and to render them meer Machins , which by the furniture of Organs they are provided with , exert their several Actions , and perform all those wonderful things which most Men think can't be done without Knowledge . For seeing that Sense and Knowledge do include an immediate Consciousness of Perceptions , which it is Contradictory to suppose in the most subtil or refin'd Body that may be , I think that Beasts ought to be deprived of them both , and that they are neither more nor less than meer Engins or Machins . But what will some say ; Have not the Beasts then any Senses or Appetites ? Tes , they have ; but without understanding or knowing what they do so feel or desire : For this is the peculiar Excellency of MAN , whereby he exceeds Beasts . For in them is nothing to be met with besides several Motions , which may as well be found in an Artificial Machin , as has been seen in the Flight of an Artificial Fly , and in that Iron-Statue , which after many Turnings and Windings presented it self before the Emperour of Morocco , kneeled down , delivered a Petition , and then rising again , returned the same way it came , as Historians assure us . Accordingly it will appear , that all those Motions which we perceive in Beasts , are only determined by the Animal Spirits , with the help of the Nerves and Muscles , and are performed in the same manner , as in us , when we do any thing without minding or knowing what we do : For indeed tho' such Actions be done in us , yet they are not properly done by us ; wherefore I allow no Soul in Beasts , besides the Blood , which being a fluid Body , and swiftly moved , it s more subtil part , which we call Spirit , and continually is carried by Arteries to the Brain , and from thence into the Nerves and Muscles , moves the whole Body , as I have fully here demonstrated . This Work in all its Parts , more Compleat and Perfect than hitherto Publish'd . Here is nothing more to be said , unless it be to acquaint the Reader , That tho' the Three Treatises contain'd in this Volume , have been well received in their former Dresses , both at home and abroad , having been often Printed here in England and in Foreign Countries , the last having been also Translated into French by Monsieur de VILLEMESMES , then Counsellor to the present French King. Yet to make them more useful to all Persons , I have now carefully Reviewed , Altered , and Enlarged them all ; so that this whole Work , in all its Parts , is more Compleat and Perfect , than what has hitherto been Published in any Language . Anthony Le Grand . THE CONTENTS OF EACH CHAPTER In each Part of the INSTITUTION of PHILOSOPHY . The first Part concerning LOGIC , in 23 Chapters . INtroduction of the Nature and Constitution of Logick , Folio 1 Of the true use of Logick , shewing that Logick is useful and necessary to the conduct of a Rational Life , 2 The first part of Logick ; of the clear and distinct perception of the Mind . What the hindrances of Science are , and how to be removed , 4 Some Rules for the attainment of Truth , 5 Concerning the various Modes of Perception , viz. pure Intellection , Imagination and Sense , 9 Of the 5 Universals , or Predicables , 10 Universals singly examined , as to their Nature , Properties and Use , 11 Of Substance , and its Affections and Modes , 14 Of the Common Attributes of Substance , 15 How the name of Substance agrees to God , and the Creatures , 17 The Genealogy of Things and Modes , 18 Of the Whole and Parts , Causes and Effects , Subject and Adjunct , 20 Concerning the distinctions , whence the nature and difference of Idea's is deduced , 22 Of the Imposition , Signification , Definition and use of Names , 23 The Second Part of Logick . Concerning the right judgment of the Mind , or Proposition , 26 Of Judgment , absolute and compared , ibid. What a Proposition is , and how manifold , with the several Rules , 27 Concerning the Truth and Falshood of Propositions , with the Rules , 29 Of Division and Definition , with the Rules , 31 The Third Part of Logick . Concerng the Minds Ratiocination , Syllogism , 33 Of Reasoning , or Argumentation , ibid. Of simple Syllogisms , and those either Complex , or Incomplex , 34 Of Conjoin'd or Compound Syllogisms , 37 Of Imperfect Arguments , 38 Of Demonstration , a Topical Sylogism and Sophistical , 39 The places whence the Middle Term is fetcht , 41 The Fourth Part of Logick . Concerning Method , or Orderly Disposition of our Thoughts , 42 Of the General Method of Knowing , ibid. Concerning special Method ; and first of that which is called Analitical , 44 Of the Method of Composing , 46 Rules of Definitions . Rules of Axioms , 47 Most General Axioms . Special Logical Axioms : from the Genus : from the Species : from the Forms or Differences : from the Property : from the Definition : from Division . 48 , 49 , 50 From the Cause : from the Effect : from the Subjunct , and Adjunct : from the Whole : from the Parts : from Like and Unlike : from Contraries : from Privative Opposites : from Contradictories : from Parity or Equality : from the Greater : from the Lesser : from Divine Authority : from Human Authority . Rules of Demonstration , 51 Of General Method , 52 The Second Part , viz. Natural Theology . in 16 Chapters . An Introductory Discourse of the Definition of Natural Theology , and its certainty , 53 What God is , and how he may be reached by us , 54 By the Inborn Idea that is in us , we know that God exists , 56 That is belongs to the Nature of God to exist , 58 The Contemplation of the World proves God's existence , 59 Concerning Fate and Will , or the Divine Decree , 62 How God is said to be the Cause of Propositions of Eternal Truth , 63 Concerning the Divine Attributes , and first of the Unity of God , 64 That God is Eternal , or without beginning or end , 65 That God is Infinite , and how we are to understand , that he is circumscribed to no place , 66 That God is the most Simple Being , 67 God is true , and as he can't be deceiv'd so he cannot deceive , 68 That God is the most highly Intelligent , or Omniscient , 69 That God is Good , and doth Good , 70 Of the Omnipotence of God , 71 That God is the Creator of all things , 73 Concerning God's Government of the World , and Providence , 74 The Third Part , viz. of Daemonology , or of Intelligences and Created Spirits , in 11 Chapters . A Prefatory Discourse , of the Division of Created Things ; the Definition of Pneumaticks , or the Doctrin of Spirits , and its certainty , 76 Of the Nature of Angels , 77 Whether the existence of Angels be demonstrable by the light of Nature , and how the same may be evinced , 79 Of the Faculties of Angels , and of their Understanding , and its Object ▪ 80 Of the Wills of Angels , 81 The Power of Angels , as to their moving , and producing of Bodies , 82 Of the Number , Distinction and Subordination of Angels , 83 Whether Angels be in a place , 85 How Speech is attributed to Angels , 86 How Angels assume Bodies , and what Actions they exert in them , 87 Whether there be any Order amongst Devils , and of what kind , 88 Of the care of Angels as to Man , and the things here below , 89 The Fourth Part , viz. General Natural Philosophy . In 25 Chapters . Of the Essence and certainty of Natural Philosophy , 91 The Existence of Material Things , proved , 93 Of the Nature and Constitution of Matter , 94 Of the properties of extended Substance , viz. Mensurability , Divisibility and Impenetrability , 96 Of the Division of Matter into sensible and insensible parts , 98 Of the threefold kind of Matter , and that there are but three Elements in the World , 99 No Substantial Forms really distinct from Bodies , 102 No Qualities or real Accidents distinct from Substance , 104 What Intelligible Forms may be attributed to Natural Things , 106 What Rarefaction is , and how performed , 108 Of heaviness and lightness of Bodies , 109 Concerning Place , 111 The supposing a Vacuum in Nature , implies a contradiction , 113 Of the Vulgar and Philosophical definition of Motion , 114 Of the Principles of Local Motion , 116 A Body can neither move it self nor another Body , 119 Of those Motions which are ascribed to Natures avoiding of a Vaccum , 120 Of the determination of Motion , both simple and compound , 122 Of Reflexion and Refraction , 123 Of the force of Acting and Resisting , 125 Of the state of Bodies , viz. hard , fluid , frangible , friable , soft , ductile , and such as may be cut or slit , 127 What loose and close , rough and smooth , contiguous and continuous Bodies are , 129 Pores in hard Bodies , as well as in fluid or soft , ibid. Concerning Duration and its Species , Time and Eternity , 131 The ends of God are not to be enquired after in Natural Philosophy , 132 The Fifth Part , viz. of Special Natural Philosophy , concerning the World and Heaven . In 24 Chap. Of the Unity and Perfection of the World , 134 The Creation of the World proved by Natural Reason , 136 The World is not circumscribed by any Figure or Bounds , 137 The Matter of Heavenly and Earthly Bodies , is one and the same , 138 What the form of the World is , whether it be the Soul , that is , the Spirit of Nature , or the most excellent disposition of its parts , 139 That God , as he is the efficient and conserving cause of Matter , so of Motion , 141 Of the Actions of Bodies , and the Communication of Motion , 143 Of the Platonick , Copernican and Tychonick System of the World , 146 Of the true System of the Universe , 148 The Heavens are fluid Bodies , 150 How the Heavens were disposed at first , and of their divers Motions , 151 Concerning the Action and Motion of the Heavenly Matter , 153 Of the Heavenly Sphere and its Circles , 155 Of the Sun , 157 Of Light , 158 How Spots come to be generated about the Sun and fix'd Stars , and how they vanish again , 161 Concerning Comets , 162 Of the Nature , Original and Affections of Planets , 164 Concerning the principle of the Planets Motion , and of their Direction , Station and Retrogradation , 166 The Motion of the Moon , and its various Appearances , 168 Of the Eclipses of the Sun and Moon , 170 Of the Fixed Stars , 172 Of Asterisms and Constellations , 174 Of the Influences of the Stars , and of Judicial Astrology , 177 The Sixth Part , viz. the four Great Bodies , the Earth , Water , Air and Fire , and of the mixt and compound Bodies , which arise from them ; as also of Metals and Meteors . In 24 Chapters . Concerning the Original of the Earth , its Parts and Figure , 179 The Earth is moved by the Fluid Heavens , that encompass it round , 182 The Earths Motion establish'd by other Arguments , 183 The Objections answer'd , which by Aristole and others are framed against the Motion of the Earth , 185 Concerning Day and Night , and the vicissitudes of Seasons , 187 Of the Zones and their Inhabitants , and of the Climats , 190 Of things generated in the Earth , and first of Fountains , 192 Of Metals and Minerals , 194 Of the Generation of Stones , Common and Precious , and of their difference and distinction , 196 Of the Loadstone , and Electrical Bodies , 199 Of the Water , 202 Of the Ebbing and Flowing of the Sea , 204 Of the Air , 207 Of the Elastick force of the Air , 209 Of Meteors in general , 210 Of Meteors in particular , and first of the Winds , Clouds and Mists , 211 Of Rain , Dew , Hoar-frost , and the Cool Evening Air , 214 Of Snow and Hail , 215 Of Thunder , Lightning , and Flashes , 217 Of the Rainbow , circles about the Sun and Moon , and of Mock-Suns and Mock-Moons , 218 Of Fire , 221 Of the Nature of Heat and Cold , 223 Of the various effects of Fire , 225 Of the Mixion of Bodies , as likewise of their changes , conversion , generation , corruption , alteration , augmentation and diminution , 227 The Seventh Part , viz. Living Creatures in General ; and specially of Plants and Animals . In 23 Chapters . Introduction of the Division of Living Creatures , 229 How Living Bodies differ from those that are Inanimate , and destitute of Life , 231 The Life of Bodily Things consists in Moisture and Heat , 232 The death of Living Things proceeds from contrary Principles , viz. from Cold and Driness , 233 What is the cause of that hardness , which is observed on the outside of Living Bodies , 234 Of the different degrees of Heat in Living Bodies , 235 The Virtue and Nature of Aliments remain in the Bodies that are fed and nourished by them , 236 Living Things vary according to the difference of Place and Time , 237 Of Plants , and first of their several parts , 238 Of the Original of Plants , 240 Of the nourishment and growth of Plants , 241 Of the division and difference of Plants , 243 Of the propagation of Plants , 245 Of the colours of Plants , 247 Of the several tastes of Plants , 248 Of the odour or scent of Plants , 250 Of the diseases and death of Plants , 251 Of Animals , or living sensible Creatures , 252 What the Souls of Brute Beasts are , 254 Of Four-footed Beasts and Creeping Things , 256 Of flying Animals , or Birds , 257 Of swimming Animals , or Fish , 259 Of Insects , 260 Of the death and destruction of Animals , 262 The Eighth Part , of Man , considered with relation to his Body , in 24 Chapters . The definition of Man , 264 A description of the External Parts of Mans Body , 266 A description of the principal Inward Parts of Mans Body , 268 Of the forming of the Birth in the Womb , and of its Animation , 270 How Mans Body is nourished and encreased , 272 How the Motion of the Heart , Arteries and Muscles are performed in Mans Body , 275 Of the circulation of the Blood , 277 Concerning Respiration , 279 Of the growth and decrease of Mans Body ; of the temperaments and the difference of Age , 281 Of the Senses in general , 283 That the Senses are the effect of the Nerves ; and that the Soul of Man only feels , forasmuch as it resides in the Brain , 285 Of the Senses in particular , and first of the Touch , 286 Of the Sense of Tasting , 288 Of the Sense of Smelling , 290 Of the Sense of Hearing , 292 Of the Eye , 294 Of Colours , 295 Of the Sense of Seeing , 297 How Vision or the Sense of Seeing is performed , 300 Of Waking , Sleep and Dreams , 303 Of the Appetite of Hunger and Thirst , 305 Of the Cmmon Sense , Imagination and Memory , 306 Of Health and Sickness , with the several Diseases , 308 Of Medicaments in General , and their operations , 315 The Ninth Part , viz. of Man , considered in the other Part , to wit the Mind , in 15 Chapters . Of the nature of Human Mind , and that is more evidently perceived than Body , 320 That Human Mind is distinguished from the Body , and is Spiritual and Immaterial , 322 How Human Mind is united to the Body , 324 Whether there are Innate Idea's in Human Mind , 327 Of the faculties of Human Mind , Intellect , Imagination , Will , Memory , R●miniscence and Wit , 328 Of the Affections , or Passions of the Mind , 331 In what part of the Body the Soul receives its Passions , 333 Of the Order and Number of the Passions , 334 Of Admiration , 335 Of Love and H●tred , 337 Of Affections , 338 Of Joy , 339 Of Sadness , 340 Whence the Natural Inclinations and Aversions of some Men arise , 342 Of the Immortality of Human Mind , and of its State after Death , 343 The Tenth Part , viz. Ethicks , or the Right way of ordering the Life of Man. In 37 Chapters . A Prefatory Discourse of the dignity and use of Ethicks , 346 Of the nature of Ethicks , and its principal Parts , 347 What Good is , and how , and why desired , 349 What the Highest Good is , 350 That the good things of the Body conduce not to Mans happiness , 351 External good things are not Mans good , 352 What is Mans highest good in this Life , and his ultimate end , 353 Of the nature of Virtue in general , 354 Of the Law of Nature and Right Reason , with the principal Dictates thereof , 356 Of Prudence , and its Parts , 359 Of Temperance , 361 Of Fortitude , 363 Of Justice , 365 The usefulness of the Passions or Affections of the Soul , 367 What is the use of Wonder or Admiration , 369 Of the end or usefulness of Love and Hatred , and the interpretation of them , 370 Of what use the passion of Desire is , 371 Of the usefulness of Joy and Sorrow , 373 Of the Government of the Passions , and of their more general Remedies , 375 Of the liberty of Mans Will , 376 How presupposing Gods Omnipotence , Men can abide free in their Wills ; and whether the Free-will of Man can be hindred , 377 Of Human Acts , and of the goodness and pravity of them , 379 Of the Rule of Human Actions , 380 Of the Duty of Man towards God , 382 Mans Duty towards himself , 384 Of the Laws we are to observe with respect to other Men , being our Duty to our Neighbour , 385 Of the Laws of Mutual Humanity , 387 Of the Laws to be observed in Covenants and Contracts , 388 Of Special Agreements , 390 How many ways the Obligation arising from Covenants , may be dissolved , 391 Of the Laws that concern Speaking and Swearing , 392 Of Dominion , and the Duties thence arising , 393 Of the Duties of Married Persons , 395 Of the Duties of Parents and Children , 396 Of the Duties of Masters and Servants , 397 Of the Right of Sovereign Dominion , and the different Forms thereof . 398 Of the Duties of Sovereign Princes , 399 Of the Duties of Citizens , 401 The Contents of each Chapter in each Part of the HISTORY of NATURE . The First Part , viz. of Bodies . In 9 Chapters . OF a Body extended , 1 The Arguments of Epicurus answered , about empty Spaces intersperst between Bodies , 3 Gassendus his Experiments examined , whereby he endeavours to prove Vacuities in Bodies , 4 Of the Divisibility of Bodies , 7 Of loose and close Bodies , 9 Of hard and fluid Bodies , 11 Of rough and smooth Bodies , 14 Of transparent and opake or dark Bodies , 15 Of Bodies bent and prest together , 17 The Second Part , viz. of Qualities . In 10 Chapters . Of Qualities in general , 21 Of Heat , 22 Of Cold , 25 Of Heaviness and Lightness , 28 Of Taste , 33 Of Smelling , 35 Of Sound , 38 Of Light , 43 Of Colours , 45 Of Occult Qualities , 50 The Third Part , viz. of the World and Heaven . In 14 Chapters . Of the beginning of the World , 54 Of the Creation of Things , and of the ranging of the several parts of the World , 56 Of the end of the World , 58 Of the Generation and Corruption of Things , 59 Of the Heaven , or most subtile Aether , 61 Of the Sun , 62 Of the Fixed Stars , 65 Of the Moon , 67 Of the Planets , Mercury , Venus , Jupiter and Saturn , 70 Of the Spots about the Sun , and the fixt Stars , 72 Of Spots that appear in the Orb of the Moon , 73 Of Comets , 75 Of the Production of the Stars , 77 Of the Predictions of Astrologers , 79 The Fourth Part , viz. of Earth , Water , Fire and Air. In 11 Chapters . Of the Globe of the Earth , 81 Of Water , 83 Of the wonderful properties of some sorts of Water , 85 Of Fountains and Rivers , 88 Of the Sea , 90 Of the Ebbbing and Flowing of the Sea , 97 Of Fire , 99 Of Earthquakes , and Subterranean Fires , 103 Of Ashes and Coals , 105 Of Glass , 107 Of the Air , 108 The Fifth Part , viz. of Things dug out of the Earth . In 10 Chapters . Of Metals in general , 113 Of Quicksilver and Brimstone , 114 Of Salt , 117 Of Gold , 119 Of Silver and Tin , 121 Of Lead and Copper , 123 Of Iron and Steel , 124 Of the various generation of Stones , 126 Of Pearls and Precious Stones , 128 Of the Magnet , or Loadstone , 131 The Sixth Part , viz. of Meteors . In 11 Chapters . Of Vapours and Exhalations , 134 Of Winds , 136 Of Clouds and Mists , 139 Of Rain , 141 Of Hail and Snow , 143 Of the Dew , Hoar-frost , Honey and Manna , 145 Of Storms and Thunder . 147 Of Lightning and Thunderbolts , 149 Of the Rainbow , 151 Of Fires kindled in the Air , 153 Of Circles about the Sun or Moon , and of Mock-Suns , 154 The Seventh Part , viz. of Plants . In 9 Chapters . Of the parts of Plants , 156 Of the Virtues and Efficacy of Plants , 158 Of the obvious , or known qualities of Plants , 160 Of the occult qualities of Plants , 162 Of the Sympathy and Antipathy of Plants , 164 Of the Original of Plants , 166 Of the Nourishment of Plants , 169 Of the Germination , Sprouting or Budding of Vegetables , 171 Of the Decay and Death of Vegetables , 172 The Eighth Part , viz. of Animals . In 10 Chapters . Of Animals , commonly supposed to be of a Spontaneous Birth , 175 Of Animals produced of Seed , 178 Of Monsters , 181 Of the Birth of Animals , 183 Of Hunger and Thirst , 185 Of the motion of the Heart , and circulation of the Blood , 188 Of the actions of Animals , 190 Of the aversion and affections of Animals , 193 Of Sleep and Waking , 195 Of the Diseases and Death of Animals , 198 The Ninth Part , viz. of Man. In 10 Chapters . Of the Sense of Touching or Feeling , 202 Of Taste , 204 Of Smelling , 206 Of Hearing , 207 Of Sight , 209 Of Imagination , 214 Of Memory , 216 Of Slumber and Dreams , 218 Of External Passions , 220 Of some Persons Natural Inclinations and Aversions , 222 The Third Part. A Dissertation of want of Sense and Knowledge in Brute Animals , 225 The Contents of which Discourse appears according to the several Articles printed in the Margent , to which the Reader is referred . An Explanation of the Sculptures in this Work. First in the INSTITUTION of PHILOSOPHY THE Title , represented by the Figure of Fidelity , sitting on a Chair ascended by three Steps , which Steps are Emblems of those three Parts of Philosophy , over which we must pass , before we can arrive at the perfection of Truth ; her Eagle denotes her quick-sightedness , by which she is able to read the Book , held at that distance , clare & distincte ( plainly and distinctly ) as is therein written , whilst the Sun that seems to enlighten the Book , is an Emblem of that assistance Heaven freely affords us in our virtuous persuit of Learning and Knowledge : The Figure with its Foot on the first Step of the ascent , as likewise that with the Globe , and the other behind are Emblems of some Proficients in Philosophy , their particular progression in that noble Study being denoted by precedency of order . In the Preface , the Sculpture represents the several Pourtraitures of those Philosophers , cited by the Author in his prefactory Discourse ; those standing on the fore-ground , are Descartes , Gassendus , Epicurus and Zeno , the fittest to have the first place in this Sculpture , since by their Works they contributed most to the building this Body of Philosophy ; which Emblem may likewise teach us not to be forgetful of those from whom we have received Benefits . LOGICK , Part 1. Chap. 1. fol. 1. Represented by a Woman sitting in a Chair , holding in her Right Hand a two pointed Sword , and in her Left a Serpent , who twists about her Arm ; on her Head , a Helmet surmounted by an Eagle ; beneath her Feet are Books , Swords and Garlands , with Boys , having Keys and Locks in motion ; at a distance two Philosophers discoursing : Her Swords are her most proper Emblems , Logick being pugnatio Verborum ( a Word-fight ) ; her Snakes denote her subtilty , her Helmet her strength , and her Eagle her discerning faculty ; the Locks and Keys denote her power to lay open or conceal ; the Garlands on the Pedestals of the Pillars , are the Trophies of her Victories gained over other parts of Learning , which Victory is represented by her having Books , Swords and Garlands laid at her Feet ; the Sword occuping her Right Hand , and the Snakes her Left , denotes Powers , being nobler than cunning : The building in prospect , is the School of Learning dedicated to the Goddess Minerva . LOGICK with Truth and Falshood , Part 1. Chap. 2. fol. 3. The Figure which seems just risen from her Chair is Logick , as appears by her usual Emblems , ( treated of before ) the Figure whom she seems to court , is Truth , represented with a Glory round her Head , having a loose Garment cast about her ; the Glory denotes her Excellence , and her regardless Robe shews that Truth needs no Ornament , nor ought to be covered , tho' with the most pleasing and becoming pretences : The Figure next her , represents Falshood , being a Syren with a Mask and Mirror , the proper Emblems of that Vice , it being reported of that Creature , that she destroys with her Voice all that give ear to her ; her Mirror denotes the double dealing of Falseness , and her Mask the disguises she is forced to make use of ( for as it is said of Virtue , that could Men see her Naked , they would be most passionately enamoured of her , ) so on the contrary , could they see Falsity undrest of her Masks and Disguises , they would flee from her , as the ugliest and most dangerous Monster . The Building behind , represents the Palace of Logick , being the School of Learning . LOGICK discovering Falshood , Part. 1. Chap. 2. Rule 1. fol. 5. The representation of Logick as before , viewing intently the Syren , who has covered her Face with a Mask , under which appearance she endeavours to pass for Truth ; but her lower parts being her badge of distinction , are uncovered by a little Boy , and so she is detected ; which shews that the best maskt Falshood is discoverable by Truth and Innocence , tho' in its Childhood . LOGICK embracing Truth , Part 1. Chap. 2. Rule 4. fol. 8. The Sculpture represents a Garden , in which the Figure of Logick appears together with Truth , both emblemis'd as before ; the seeming Imbraces of Logick given to Truth , denote the acceptableneness of it to Learning ; they being placed ▪ in a Garden , is to shew the Pleasures and Sweets that attend them both . JUDGMENT , Part. 1. Chap. 11. fol. 26. Represented by an elderly Man sitting on a Rainbow in the Clouds , having Books and a Scrole of Parchment under his Left Foot , on his Right Knee a Book opened ; the Figure standing by Judgment , is Logick , and points towards the opened Book : The Building is the prospect of a Theatre , the Books and Serpents under , are the Emblems of Learning and Wisdom , the inseparable Companions of True Judgment , who is represented elderly , as a Badge of Experience , and placed in the Clouds to shew his inspection of all Human Affairs ; and the various Colours of the Rainbow he sits on , denote the various Methods he makes use of to be informed , and the brightness of its Rays , the clearness of his apprehension , and the seeming information given him by Logicks , pointing to the Book , shews the necessity of Learning , to enable us to make a true Judgment . REASONING , Part 1. Chap. 15. fol. 33. Represented by an elderly Woman , sitting on a Pedestal , leaning her Head on her Left Hand , with Books under her Left Foot and Elbow , in her Right Hand a Book a little opened , her Forefinger therein , and a Scrowl hanging from below the Book , with this Motto , in perfecto quieseit ; the Figure standing in a Glory , incircled with Clouds ; and on which Reasoning seems to have her Eye , represents Truth holding a Book in her Right Hand , and a Branch of Palm in her Left , having the Globe of the Earth under her Foot : On the Fore-ground are Boys and Books . The Motive for representing Reasoning by these Figures , are these , 't is represented by a Woman , to denote its productive Faculty , right Reasoning being the common Mother of every great Good and wise Action ; the Books under her Foot , denote some doubts she hath long since overcome ; and those under her Elbow , some doubts just removed ; her melancholy Posture and Air , shew the necessity of seriousness in Reasoning ; the Book in her Right Hand , seems to contain ( and more especially that part which she engageth with her Forefinger ) what is exprest in the Scrole that hangs from it , which is , that by the help of Reasoning we may bring all our undertaking to that perfection as will afford the means of being at rest : The placing Truth , as in the description , is to shew , that Reasoning hath always Truth in view , that being the End she aimeth at ; the Glory incircled with Clouds , express the inward Beauties of Truth , tho' sometime vail'd with Clouds of Ignorance ; the Book and Palm which occupy her Hands , are Emblems of those Goods she gives her Possessors , Peace and Knowledge ; and her Foot being placed upon the Terrestrial Globe , denotes her excellence above all earthly things . CONTEMPLATION Part 2. Introduction , fol. 53. The Sculpture represents a Woman kneeling at her Devotion , having beneath her the Globe of the Earth , with Eyes covered , holding a Scepter in her Right Hand , and on the same side , the Sun in Glory ; and on her left side the Moon and Stars , which she seems to inspect with care ; above in the Clouds , the Glory of the Supream Deity , with the word Jehovah , environ'd with Blessed Spirits in postures of Adoration : She is placed above the World , to shew that those who seriously contemplate the Glory of GOD , must be contemners of the World , and have their Eyes , like hers , vail'd to all its Inducements , flattering Joys and Temptations ; her Scepter denotes the power of heavenly Contemplation , we being thereby made more than Kings and Conquerors ( according to the Scriptures ; ) her contemplating the Sun , Moon and Stars , shews that whosoever soberly considers the wonderful Creation of those Glorious Bodies , will think their time best imploy'd in contemplating with Gratitude and Wonder the Excellence and Power of that GOD who made them . FATE and WILL Part 2. Chap. 5. fol. 62. The Figure on the Right Side with folded Hands , and clad in a full Garment , is Fate ; his folded Hands are Emblems of Unchangableness , and his full Garment resembles his Amplitude ; the Golden Chain which seems to fall from the Star in Glory , on which Fate looks , and with which both he and the other Figure who represents Will , are incircled , shews the necessity of the Wills complying with Fate , being bound thereto with a Chain of Coelestial Causes ; the Wings of Will are Emblems of her swiftness ; and her extended and erected Hands and Head towards Heaven , shews we will every thing under the appearance of Good. PROVIDENCE , Part 2. Chap. 16. fol. 74. Represented by a Woman sitting on a Pedestal , her Right Arm leaning on a Wheat-sheaf , and on her Left a Boy winged , bringing her a Cornucopia of Fruits and Flowers , as shewing the great goodness of Providence , who gives not only on the Right , Corn to support the necessity of Nature , but also on the Left , Fruits and Flowers to recreate and cherish it : At a distance in prospect is a Corn-field , in reaping time , brought to its maturity by that Eye of Providence , which from out of a Glory inspects it , and thereby demonstrates that GOD in his Providence vouchsafes to look down from his all Glorious Throne of Heaven to bless the Goods of the Earth to Mans use , which ought to draw from us returns of Praise and Thansgiving . SPIRITS , Part 3. Introduction , fol. 76. In the Clouds are represented Choirs of blessed Angels playing on Musical Instruments , and singing and praising GOD. In a Cavern below , are represented the Infernal Spirits , seeming to utter hideous Cries and Groans , the effects of the anguish they suffer in themselves , and that raised in them by their enviously beholding the happiness of the Blessed above ; for true Happiness is by nothing so much exprest as by praising GOD. NATURE of ANGELS , Part 3. Chap. 1. fol. 77. In the Clouds appears a glory of Angels and Cherubims contemplating with desire and joy , the Glory of GOD which appears above , half veild by a dark Cloud ; it being the Nature not only of Angels , but of all good Men to behold with Praises and Adoration that GOD who made them for that end . MOTION of ANGELS Part 3. Chap. 5. fol. 82. Represented by several Angels , occupying themselves in doing the service acceptable to their Creator , as bringing Peace and Reward to the Good on Earth , which is shewn by those two , who bear a Coronet and Branch of Palm downwards , as likewise in carrying the Actions and Prayers of the Just to Heaven , shewn by that Angel who bears the Pot of Incense towards the Sky ; and by the other who is uncovering the Monument of King Charles the Second , to lay , as it were , open the good Actions of that best of Princes , to that GOD who will reward them . ORDER NUMBER and DISTINCTION of ANGELS , Part 3. Chap. 6. fol. 83. The Sculpture represents the three Hierarchy of Angels , and in each Hierarchy the three Orders ; the 1 st . containing Seraphims Cherubims and Thrones , the 2 d. Dominions , Virtues and Powers ; the 3 d. Principalities , Arch-Angels , and Angels with Palms , Swords and Crowns , denoting their Offices of Peace , Power and Glory , given them by that GOD , who is represented above them , and who made , ordered , numbred and distinguished them for his Service and Glory . DAEMONS , Part 3. Chap. 10. fol. 88. In a gloomy Cavern are represented the nine degrees of Daemons , or Infernal Spirits , distinguished by their monstrous and ugly variety , and which ( according to the Discourse ) they are known by : The first termed Belzebub , generally allowed Sovereign Emperor over all the rest , tho' his Name signifies no more than King of Flies ; the 2 d. Python , 3 d. Belial , 4 th . Asmodeus , 5 th . Satan , 6 th . Meririn , 7 th . Apolyon , 8 th . Astorath , and 9 th . Mammon : The Figures in the Air are Angels , bearing up a Child , whom they had rescued from the Devils : The reason for the precedency of these Devils to one , the other ariseth from their greater or lesser power in doing hurt , and therefore some people may wonder why Mammon , who is taken for the Devil of Riches , should be placed last , the power of Gold in doing ill being the greatest . CARE of ANGELS , Part 3. Chap. 11. fol. 89. Represented by an Angel , rescuing and protecting a young Man from the fury of the Devil , and by two Angels driving a Daemon before them , the defending us from the assaults and snares of the Devil , and driving him from us , being their constant employment and care . PHISICKS , Part 4. Chap. 1. fol. 91. Represented by a Woman with a Sphere and Books ; on her Right Side an Eagle , and on her Left two Boys , having a pair of Compasses and a Square ; the three Figures in prospect are three Philosophers in consultation concering the Planets and Stars , the Books , Mathematical Instruments , and Eagle are Emblems of the quicksightedness , Learning and Practice requisit to the true understanding of Phisicks . DURATION and TIME , Part 4. Chap. 24. fol. 131. Time is represented by Saturn , being on Old Man bald Headed except one Lock , and standing on Tiptoe with one Foot on a Rock , having a Syth and Hourglass : Saturn is feigned by the Poets to be the Father of the Gods , the first beginner of Time , his Age and Bald-pate denote his antiquity and duration , and his one Lock , the one punctum of Time present , by which we ought to hold ; he stands on Tiptoe to shew he hastens to be gon ; his Hourglass and Wings are Emblems of his never resting and swiftness , and the Syth the destruction and consumption he makes of all things . The four Figures below him , represent the four Seasons of the Year and parts of Mans Life , following one another towards the Temple of Eternity ; our Childhood brings Youth , Youth brings Manhood , Manhood Old Age , and Old Age to that Eternity properly described by the Circle over the Temple , and the Hoop in the Boys Hand , being what are in appearance without end . The Motion of the PLANETS , Part 5. Chap. 1. fol. 134. Represented by Sybell , having a Castle on her Head , and sitting on Lions , placed on the Globe of the Earth ; the Castle and Lions denote the strength of the Earth , both in respect to its Creatures and improvements , the Lion being the strongest Animal made by Nature , and a Castle the strongest thing made by Art ; her having the Castle on her Head , and the Lions below her , shew the strength of Human Art is greater than the strength of Beasts ; the seven other small Figures are bodily representations of those Poetical Heathen Gods , whose Names are made use of to distinguish the Planets by ; that in the midst and over the Earth , is Apollo , encircled with Light , as God of the Sun ; his Bow and Arrow denote the piercing power of his Rays and Sun-beams : That standing on a Cloud , and under the Earth , is Luna ; the Bow in her Hand , and Cressent on her Head , are Badges of her two-fold Devinity ; the first as she is Goddess of Hunters , by the Name of Diana ; the last as Goddess of the Moon , by the Name of Luna , as above : The Figure over Apollo , is Mercury , the Wings of his Feet denote his swiftness in running , as his Staff twisted with Snakes doth his Cunning ; those being the peculiar Excellencies given him by the Poets , and the Qualifications that rendred him capaple of the great Employments he possesseth , of being Envoy and Currier in Ordinary to the Gods : The Figure on the Right Side of Apollo , is Venus , the Star on her Forehead denotes her Divinity ; her Doves are Emblems of Love , and properly joined to her who is the Goddess of Love. Over Mercury stands Mars , who bears a Sword and Buckler , being accounted the God of War ; that on the Left Hand is Jupiter , the Thunderbolts in his Hand , and the Eagle under him are the Coat Armour of Heaven , of which by the same Authority , he is accounted God : That on the Right Side is Saturn , his Wings denote the fleeting of Time , of which he is reported God , and the Syth in his Hand , shews the destruction made of all things by this Divinity Time. The SUN in GLORY , Part 5. Chap. 14. fol. 157. Within a Glory is represented , Phaebus in his Chariot drawn by white Horses , they being the Creatures he is said to have ordered to be offered up to him in Sacrifice ; beneath lies a Shepherd and his Dog a sleeping , who are recovered from their drowsiness by the brightness of his Rays , and the warmth of his Beams , which cherish and enliven all Human Creatures . The MOON , COMETS , &c. Part 5. Chap. 17. fol. 162. The Figure covering his Eye with his Finger , is Archimedes a viewing the Moon , Stars , and other Planets , through a Teliscope ; and that Figure next him is a Philosopher discoursing him about some Planetary Observations ; upon and below the Table are several Mathematical Instruments , as Squares , Globes , &c. The EARTH , Part 6. Chap. 1. fol. 179. Represented by Sybell , drawn by Lions in her Charriot , having a Castle on her Head , and the Globe of the Earth beneath her : The reason for representing the Earth by this Figure , is given before in the Treatise of the Motion of the Planets : The Angel bearing Fruits and Flowers , as it were from Earth to Heaven , denotes that the sweetest things of the Earth ought to be offered up to the GOD of Heaven , who made and preserves the Earth . DAY and NIGHT , Part 6. Chap. 5. fol. 187. The Figure of the Young Man with Wings holding a lighted Torch in his Right Hand , and a Serpent in a circular form in his Left , having one Foot on a Cloud , and the other on the light part of the Globe , represents Day ; his Youth is the Morning , and his lighted Torch the Noon ; his circular Serpent shews the motion of Time , and his treading on a Cloud , that he puts Darkness under his Feet ; behind the Globe on the backside , slipping away as it were , stands a Woman Winged and Cloathed in a a Sables Garment , embroidered with Stars , having on her Head a Crown of Poppeys , representing Night ; her Posture shews her not to be able to stay in presence of Light ; her Garment is her proper Emblems , and her Poppeys are promoters of Sleep , the true business of the Night : The Element below her spangled with Stars , shews the descending of Night at the ascending of Day . The WATER , Part. 6. Chap. 11. fol. 202. Represented by Thetis , whom the Poets have fain'd to be Goddess of the Sea ; her Charriot is drawn by Dolphins , accounted the best natured and most compassionate Fish ; and for that reason preferred to the honour of drawing their Queen : Over her is the Figure of a Boy , who pours Water out of a Watering pot , as intimating that we have Water from above in Rain , as well as below in Rivers . The AIR , Part 6. Chap. 13. fol. 207. Represented by the Goddess Juno , Wife of Jupiter , sitting in a Charriot drawn by Peacocks ; she is accounted by the Poets as Goddess of the Air , and is drawn by these Birds as the most beautiful Creatures , to compleat whose beauty , she hath adorned their Tails with a hundred refulgent Eyes , taken from Argus , to whom she had given them , the better to see into the Amorous Intreagues of her Husband Jupiter , of whom she was Jealous , but Argus being kill'd by Jupiter , she reassumed her Gift and disposed of them as above . The WIND , Part 6. Chap. 16. fol. 211. Represented by a Figure Crown'd and Sceptr'd , being Aeolus , the Poetical God , and King of the Winds ; on each side of him are two Figures , representing the four Winds ; the lowest on the Right Hand is Boreas , the North wind , depicted like an Old Man , with Bats Wings and a Serpents Tail ; his Bats Wings denote his blowing most in Evenings and Nights , and the Serpents Tail his stinging Colds and Blasts ; above is Eurus the East-wind , represented also by a Man with Wings , to shew the swiftness of his motion : The uppermost on the Left Hand is Auster , the South-wind , represented by a Young Man , and below him Zephyr , the West-wind , represented by a Man pouring out Water , as generally bringing Rain along with him ; they are all blowing out Winds , which occasions a Tempest , as appears by the foaming and raging Billows of the Sea , that seem to overwhelm the Ships therein . THUNDER , Part 6. Chap. 19. fol. 217. Represented by Jupiter , who , as before is said , is accounted the chief God of Heaven , and the Inventer and User of Thunderbolts , having as 't is storied , been forc'd to contrive this Weapon to defend his Coelestial Kingdom against the assaults of the Giants , who dared to attempt the Invasion of it ; they are made by Vulcan , the Black-Smith in Ordinary to the Gods , and accounted as such himself , and are of that subtile contrivance , that they at once kill , burn and astonish without being seen ; for which reason there is no Guard to be made against them ; he is set upon an Eagle , the Emblem of Quick●ight and Power ; for as that Bird only can gaze on the Sun with unmoved Eyes , and destroy with her strength whom she pleases of the Birds , so Heaven only has power to discern our Actions , and to punish where it thinks fit : The Figures below represent two Men , covering their Heads for fear of the Thunder , and affrighted at its noise ; the Houses on Fire , the Trees Blasted and beaten down are the visible effects of Thunder , and may admonish us to beware of offending Heaven , who can destroy with its Breath . The FIRE , Part 6. Chap. 21. fol. 221. Represented by Vulcan standing in his Charriot , which is drawn by Sea-dogs , at work at an Avil , being furnished with Fire from Mount Aetna . Vulcan is the fam'd Blacksmith to the Gods , as is before said , and consequently a great Dealer in Fire ; the two Sea-Dogs chained to , and drawing his Charriot , are Emblems of the predominancy that Fire hath over its contrary Element the Water ; and by Mount Aetna is shewn the power of this hot Element even in the Earth . ANIMALS in general , Part 7. Introduction , fol. 229. In the midst a Man contemplating with admiration the variety of Beasts and Fowls about him . GARDNING , Part 7. Chap. 12. fol. 245. The representation of a Garden , in which the four Figures are Gardners , imployed in so many several Actions belonging to that Ingenious Art , as Digging , Grafting , Inoculating and Screening of Earth ; in prospect a Fine House . ANIMALS , Part 7. Chap. 17. fol. 252. The representation of several Animals , and more particularly those extraordinary in their kind , as the Horse , Elephant , Lion , Camel , Deer , Bear , Swine , Sheep , Dog , &c. CREEPING THINGS , Part 7. Chap 19. fol. 256. Represented by a Tortoise , Crocadile , Lyzard , Serpent , Mole , &c. FOWL or FLYING ANIMALS , Part 7. Chap. 20. fol. 257. Represented by the Ostridge , Eagle , Peacock , Swan , Turkey , Cock and other Birds . FISH or SWIMMING ANIMALS , Part 7. Chap. 21. fol. 259. Represented by the Salmon , Pike , Lobster , and other Fish ; in prospect some Men in Fishing Boats , and Nets a catching Fish . INSECTS , Part 7. Chap. 22. fol. 261. Represented by several sorts of Butterflies , small and great Flies , Grashoppers , &c. MAN as to his BODY , Part 8. Chap. 1. fol. 264. The Figures represent Man in his compleat Body , composed by Bones , Flesh and Skin : That on a Pedestal on the Left , is perfect , the next is the Muscular , having his Skin off , and the next an Anatomy of Human Body ; the Figures seeming to inspect them , represent Physicians as consulting . The five SENSES in general , Part 8. Chap. 10. fol. 283. 1 st . Smelling , represented by the Figure holding a Flower to her Nose . 2 d. Hearing , represented by a Young Woman playing on an Instrument of Musick . 3 d. Tasting , represented by a Young Woman filling a Glass of Wine , and by her side a Munkey eating an Apple . 4 th . Feeling , represented by a Woman pulling a Snake from her Hand , and by two Cocks fighting . 5 th . Seeing , represented by a Woman in a Habit of a Falconer , having a Hawk on her Fist , ready to be cast off at that Bird in the Air which the seems to view . FEELING , Part 8. Chap. 12. fol. 286. Represented by a Woman seeming to snatch her Hand from a Parrot , who seems to bite it ; at the same time a Dog is pulling her by the Coat ; as also by that feeling story of the Monkey making use of the Cats Paw to pull the Chesnut out of the Fire ; and by a Mans beating a Dog , and by the fighting of two Birds , all true Emblems of this noble Sense . TASTING , Part 8. Chap. 13. fol. 288. Represented by two Women in a Garden , the one seated and eating an Orange , expressing by her gay Air the pleasure afforded her by that noble Sense ; the other is the Figure of a Woman pulling some Fruit in order to eat it ; there are also Cupids eating Oranges , to shew the pleasures of Love consist chiefly in Tasting . SMELLING , Part 8. Chap. 14. fol. 290. Represented by two Women in a Flower Garden , and smelling the Flowers : By a Blood-hound in Scent after his Game ; as likewiseby an Incense Pot smoaking with Perfumes , being the most pregnant Emblems of that Sense . HEARING , Part 8. Chap. 15. fol. 292. Represented by a Woman playing on an Organ , having two Women standing behind her , with Musick-Books in their Hands , and seeming to sing in consort ; and by a Cock pearching on a Pedestal , being the Creature who hears at a greater distance than any other . SEEING , Part 8. Chap. 18. fol. 297. Represented by a Man with a Prospective in his Hand , standing on a Hill viewing an Ingagement of Ships at some distance , and by a Figure lying on the fore-ground , having his Eyes fixt on the Sea , which seems at a distance . MEDICIN , Part 8. Chap. 24. fol. 315. Represented by the Serpent Python , surmounted by Apollo , the God of the Sun. This Serpent is said to Poison all the Herbs and Grass he comes near , and for that reason was destroyed by Apollo , who also is the God of Wisdom , and properly Emblemiseth Medicin , there being , in wisely prepared Medicins , a remedy to destroy all poisonous Diseases . MAN as to his MIND , Part 9. Chap. 1. fol. 320. The Womanish Figure holding a Sphere in her Right Hand , and a Glory descending from Heaven upon her Head , represents a Human Soul ; the Sphere is the Emblem of its knowledge , as to Human Affairs , the descending Glory , its Immortality ; on her Right Hand stands Knowledge , represented by a VVoman , who holds a Torch lighted in her Right Hand , an open Book on her Lap ; and on the Left Hand is the Figure of a Man , sitting in a musing posture , having Wings on his Back , and represents Thought ; she is thus attended to shew that the two noblest Faculties of the Soul are Knowledge and Thinking . The FACULTIES of the MIND , Part 9. Chap. 5. fol. 328. The four Figures represent the four Faculties . 1 st . Understanding , represented by a Young Man , to denote the Beauty of it , Robed and Crown'd to shew that Honour and Power attend it ; and the Flame encircling the Head , is an Emblem of its alliance to Heaven , and the Eagle is an Emblem of its quickness in perceiving . 2 d. On the Right Hand of Understanding stands Imagination represented by a Woman , to shew its productive Power , which is also shewn by the Coronet of small Figures she bears on her Head ; Imagination producing more various forms and beings than Dame Nature can boast of ; the Wings on her Head denote the swiftness of that Faculty . The 3 d. is Memory , represented by a Woman with a Helmet on her Head , to shew the strength of that Faculty ; and by her a Dog in a Slip ; a Dog is a proper Emblem of Memory , enjoying , as by Experience is found , more than any other Creature , of that noble Faculty . The 4 th . is Will , represented by a Young Man Wing'd and Blindfolded with extended Arms , and erected Head ; the reason for representing that Faculty is given before . ADMIRATION , Part 9. Chap. 9. fol. 335. Represented by a Woman , seeming to have all her Faculties at work , by viewing that admirable Object that lies before her , being a Lion and a Lamb lovingly enfolded , and by other Figures , whose Looks spake this Passion ; in prospect , a Building . LOVE and Hatred , Part 9. Chap. 10. fol. 337. Represented by Venus the Goddess of Love , sitting in the Clouds , and over her Cupid her Son and Messenger ; the Arrow he holds in his Hand , is the Weapon that opened the way for the love of the Man below , to the Heart of that Lady , who seems to embrace him : The Figure , as it were stabbing the other with a Dagger , represents Hatred , and the Devil behind him shews the ugly and damnable qualities of that Vice. AFFECTIONS or DESIRE , Part 9. Chap. 11. fol. 338. Represented by a Young Woman , who in the persuit of Honour and Riches , which seem to appear to her at a distance , is thrown down by the Figure of Will ▪ ( represented as usually ) and at the same time a Serpent bites her by the Heel , shewing the misery and pain which attend the desiring or affecting too much above what we want , to sustain Nature , and the Precipice we are hurl'd from by our Will , in placing our Affections on those Goods of Fortune which are not in our reach . JOY , Part 9. Chap. 12. fol. 339. Represented by a Young Woman , in a loose Garment , having a Bottle of Wine in one Hand , and a Glass in the other ; by her another Figure with a Bottle , and on the fore-ground Boys playing on Flutes : This Passion is most properly thus emblemised , Women , Wine , and Musick being the Joy Heaven gave us to guild this otherwise bitter Pill of Life . SADNESS , Part 9. Chap. 13. fol. 340. Represented by a Woman in a Widows habit , sitting on the ground in a melancholy posture , leaning her Head on her Hand ; by her a Boy a weeping , and below her a Boy with an extinguished Torch ; above , and at some distance from her , stands an Urn impaled with Cyprus Trees ; upon the Rails which encompass the Pedestal of the Urn , stand Pots of Fire flaming , to the memory of him whose ashes are contained therein : These Figures are the properest Emblems of this Passion of Sorrow , no state being so void of Joy as hers , who being a fond and virtuous Wife , is by death robbed of a deserving tender Husband ; the darkn'd Torch held near her , shews she has no flame , but that which burns to the Manes of her departed Lord. ETHICKS , to front Part 10. fol. 346. Represented by a Woman , seated in a graceful Posture on an ascent , holding a Lion bridled in her Left Hand , and in her Right a Level ; her ascent and graceful Posture , shew the Majesty of this Noble part of Philosophy ; her bridled Lion denote its Power ; the force of her Arguments in evincing and clearing , are shewn by her Level : On her Right Side are the three Cardinal Virtues , Truth , Justice and Charity ; the first represented by a naked Figure , holding a Book and Palm Branch in one Hand , and the Sun in the other : 'T is naked , to shew Truth ought not to be covered ; her Book and Palm are the rewards she gives , which are Peace and Knowledge ; and the Sun is an Emblem of her Brightness , Truth being as clear as the Noon Day : The 2 d. is represented by the Figure of a Woman vailed , holding a Scepter , with an Eye upon the top , in her Hand ; she is veiled , to shew she looketh not on , nor regardeth the Person of any , but administers Justice impartially ; her Scepter and Eye denote her Power and Knowledge : The next is Charity , represented by a Woman comforting Children ; on the Left Side of Ethicks stand the four Vices , Envy , Drunkenness , Lasciviousness and Deceit . The 1 st . Envy , is represented by an Old Woman half naked , having Snakes about her Body and Hair ; Age and Snakes are the proper Emblems of this Vice , it being as old as the Devil , and poysoning the Minds of all that entertain it , as Snakes do the Bodies of all that touch ' em . The 2 d. Drunkenness is represented by a Man a spewing , the true loathsom Emblem of that Gluttonous Vice. 3 d. Lasciviousness represented by a Woman in an immodest posture , that being Lasciviousness . 4 th . Deceit , represented by a Woman holding a Mask , shewing the necessity that Vice hath of being disguised , and of its often appearing under borrowed forms : Ethicks is thus attended to shew the Virtues she possesseth , and the Vices she hath overcome . The HIGHEST GOOD , Part 10. Chap. 3. fol. 350. Represented by a Young Man , cloathed in a short Garment , with his Eyes lift up towards Heaven , holding in one Hand an Olive Branch , and in the other a burning Heart , into which his Tears seem to fall , and on his Head the Glory of Heaven descending , as through a Cloud : The highest Good consists in these three things , peace of Mind , favour of God , and a Heart flaming with desire of Heavenly things ; and therefore 't is properly represented by this Figure . The LAW of NATURE , Part 10. Chap. 8. fol. 356. Represented by a Young Woman half naked , having her lower parts covered with a Lamb-skin , Emblems of that innocence and modesty prescribed by Natures Law ; she is placed in a pleasant Garden , holding a Table on her Knee , and a pair of Compasses in her Hand , measuring two parallels , with this Motto . Aequa lance ; behind her a Woman holding Books , and having other Books under her Feet ; all which denote how even just and pleasant the Laws of Nature are : On her Right Side are the three Virtues , Truth , Justice and Charity ; and on her Left Side , Envy , Drunkenness , Malice and Pride , all properly Emblematis'd as before ; by the Virtues being on the Right of Nature , and the Vices on the Left , we are taught that Virtue is more acceptable than Vice to Nature in her first Principles , till she is dabaucht by Custom or Practise . PRUDENCE , Part 10. Chap. 9. fol. 359. Represented by a Woman , standing in a graceful posture , holding in her Right Hand a Looking-glass , and in her Left a Serpent ; and over her an Angel putting an Helmet on her Head ; on her Right Hand a Cupid , holding an Olive Branch in one Hand , and a Palm in the other ; and on her Left Side a Young Man with a Sword and Buckler : The Looking-glass in her Right , denotes that every prudent Person ought to look into , and know themselves ; the Serpent is an Emblem of Cunning , and the Angel putting the Helmet on her Head , expresseth Heavens aiding us in all our prudent undertaking : The Cupid with Branches , and the Young Man Armed denote that Prudence brings success in Love , and Victory in War. TEMPERANCE , Part 10. Chap. 10. fol. 361. Represented by a VVoman , holding in her Right hand a Bridle to curb the exorbitant desires of the Flesh , and over her Headan Angel , crowning her with Lawrels , having a Palm in his Hand , thereby shewing that Heaven will reward this Virtue with Peace and Glory ; on her Right a Cupid , pouring out liquor in a Vessel , and on her Left an Elephant , dividing his proportion of Corn , denoting thereby that we must use Temperance even in Love , and that Beasts , share in that Virtue which men must blush to want . FORTITUDE , Part 10. Chap. 11. fol. 363. Represented by a VVoman , holding a Pillar , and curbing with a Bridle a Lion , who seems inraged : In the Air is represented Hercules , with his Club and Lions Skin ; the story of Hercules , and the reason for his being so adorn'd is so little estranged , that it needs not be here repeated , theresore I shall only add , that the Emblems of Corporal Fortitude , as here described , serve only to enable us to judge of the greater fortitudes of the Mind discourst of in the Book . JUSTICE , Part 10. Chap. 12. fol. 365. Represented by a VVoman , holding in her Right Hand a Sword , and in her Left a pair of Scales ; next her a Boy bearing the Fasces and Axes carrying before the Roman Victors : The Figures of the Men represent Philosophers contemplating Justice , that being the work of every wise Man ; the Fasces were Rods , with which they used to chastise Malefactors for small faults . MANS DUTY to GOD , Part 10. Chap. 23. fol. 382. Represented by a Man , VVoman and Boy , addressing themselves to Heaven , in a becoming posture , and in the Clouds two Angels with Trumpets ; 't is represented by these three , to shew that Men , VVomen and Children are obliged to this Duty ; the Angels with Trumpets , denote the joy the Blessed have in beholding the Righteous Actions of Men ; the Angel below pointing to the Coronet and Cornucopia , is an Emblem of that Honour promised to the Righteous ; the Flame three-fold , flaming on the Womans Head , denotes by its number the Trinity , by its heat , the warmth of her Zeal , and by its light , the brightness of her Faith. MANS DUTY to HIMSELF , Part 10. Chap. ●4 . fol. 384. Represented by an Old Man , in a becoming posture , holding in his Right Hand a Staff , having a Serpent twisted about it , his Head Crowned with Lawrel ; on his Right Side a Young Man armed , having on his Head a Helmet , in his Right Hand a Sword , and in his Left a Target ; self-preservation is every Mans duty to himself , and therefore provident Nature hath furnish'd the means ; to the Old she hath given Cunning to save themselves , emblematis'd by the Old Mans Staff , encircled with Serpents , the cunningest and most subtile of Creatures ; to the Young , strength and valour , represented by the Sword and Target , held in the Young Mans Hand , whilst the Figure of Justice , who stands before them both , informs us that both Old and Young are obliged to be just , not only to others , but to themselves . MANS DUTY to his NEIGHBOUR , Part. 10. Chap. 25. fol 385. Represented by two Men kindly embracing each other ; on their Right Side are Justice , Love and Charity , with their proper Emblems as before described ; and on their Left , a Woman with a Cornucopia of Fruits and Flowers , the Emblem of Plenty ; all which denote , that we ought to be friendly in our carriage , just in our dealings , and charitable ( according to our ability , to all that want ) and that those who do so , shall have plenty of all the Fruits of the Earth . CONTRACTS , Part 10. Chap. 27. fol. 387. Represented by the Platform of a Custom-house Key , with Figures of several Men , denoting a Merchant , a Chapman and Porter ; in a Barge a Man stowing some goods , which they seem to have contracted for . MUTUAL FAITH or MARRIAGE , Part 10. Chap. 32. fol. 395. Represented by the Figure of Faith , being a Woman almost naked , having a Glory about her Head ; her nakedness denotes her innocence , and the Glory is the Emblem of that Heaven from whence she sprung ; she is placed between a Man and Woman , joining Hands as in Marriage , to shew that she only can truly perform that Office : On the Mans side is the Figure of Justice , an emblem of what he owes to his Wife ; and on the Womans , that of Constancy , and a Cupid with a lighted Torch , denoting that the Duties of a Wife to her Husband are constant Love and Desire towards him ; the Torch is a Badge of the ancient way of performing that Ceremony of Marriage , for on the Wedding-day they used to light up a considerable number of them , in honour to Hymen the God of Marriage ; the billing Turtles are emblems of that Love and Harmony which ought to be between Man and Woman . DUTY of PARENTS and CHILDREN , Part 10. Chap. 33. fol. 396. Represented by a Man and Woman , sitting in a grave and loving posture , having Children about them ; by their side is the Figure of Justice , having her Head covered with a Helmet , and a Mound under her Foot , to denote that the Duty of Parents is giving good example to their Children , and that their Justice ought to take place and surmount all paternal fondness ; on the Right Side is the Figure of a Woman veil'd , representing the modesty Children must observe in the presence of their Parents ; the Stork by her Side is the emblem of ill Parents , it being reported of that Bird , that she eats her Young Ones . DUTY of MASTERS and SERVANTS , Part 10. Chap. 34. fol. 397. Represented by a Woman , sitting in a graceful posture in a Chair , attended on the Right Hand by a Woman holding a Garland and Cornucopia , representing Plenty ; and on the Left by a Woman , bearing a Sword and Ballance , the emblem of Justice ; before the Chair stands a Blackamoor Lackquey , seeming to receive some Errant to go on ; beneath the Figure of Plenty stands a Maidservant attending her Ladies Commands , all which properly describe that Masters and Mistresses are bound in duty to do Justice to , and provide for their Servants plenty , and that the duty of Servants is the careful , honest and respectful performance of all their Masters or Mistresses lawful Commands . REGAL POWER , Part 10. Chap. 35. fol. 398. Represented by a Man , seated on a Throne , Crown'd , Rob'd , Scepter'd , with a Mound in his Left Hand , attended on by his Courtiers , as also by the representations of Justice , Prudence , Clemency , Fortitude and Truth , as the eternal Companions of true Regal Power ; he being no more properly a King , who wants these Virtues , than an illiterate Man can be a Judge of Learning . The Explanation of the Sculptures in the HISTORY of NATURE , Book II. THE FRONTICEPIECE , represented by a Woman looking behind her , and writing in a Book , which lies on the Back of Time , emblematis'd as before ; shewing the nature of History , which is the immediate representation of things past ; and by another Figure reviewing the Sun , Moon , Stars , &c. and surrounded with several Beasts , Birds , &c. denoting the generality of things treated of by History . No VACUUM , Part 1. Chap. 1 , 2 , 3. fol. 1. The Author having proved it in his Book , 't is thus represented by the Sculpture , a Boy pouring Liquor out of one Vessel into another , thereby shewing , that as the Air which occupied the lower Vessel is drove out by the heavier Element of Water , it immediately enters into , and fills the upper Vessel ; as also by the blowing up of a Mine , the visible effects of the extension and dilatation of Air : The Figures seeming to discourse , represents Philosophers . SMELLING , Part 2. Chap. 6. fol 35. Represented by a Blood-hound in scent after his Game ; by a Woman smelling to a Nosegay ; by a Man who seems offended at some unpleasing smell ; and by a Woman in a swoon , supported by two others , and one of them holding a Box or Glass of some Scent to her Nose , which seems to recover her : In prospect a Pack of Hounds in chase of a Fox . SOUND , Part 2. Chap. 7. fol. 38. Represented by several Musical Instruments lying on the fore-ground ; also by a Man ringing a Bell , by another sounding a Trumpet , by another beating a Kettle-Drum , and by a Woman tinkling on a Brass Vessel to a swarm of Bees to hive them , all proper emblems of Sound . OCCULT QUALITIES , Part 2. Chap. 10. fol. 50. Represented by a Man , seemingly trembling at the sight of a Lion , and hastily running from it ; by the terror of a Sheep at the sight of a Wolf ; by the seeming trembling and fear of a Hen and Chickens at the sight of a Kite , and by the hasty flight of a Dove from a Hawk ; all the visible effects of qualities proceeding from a Cause admired , but never known . The BEGINNING or INFANCY of the WORLD , Part 3. Chap. 1. fol. 54. Represented by the Figures of a Savage Man , Woman and Children , who seem to live in those Huts placed in the Woods , having several Animals about them . The Primitive Times supposed to want the conveniencies of Houses and Apparel , through want of experience . The SUN , Part 3. Chap. 6. fol. 62. Represented by Phoebus , sitting in his Charriot in the Clouds , drawn by four white Horses , for the reasons before given in the description of the Sun in Glory . The Figures on the lower part are representations of several Men , Women and Animals , bathing themselves ( as it were ) in those brilliant Rays proceeding from this warm De●ty , Phoebus , and may teach us how pleasant and joyful it is to live in the Sunshine of Heaven . The MOON , Part 3. Chap. 8. fol. 6● . Represented by the Goddess Diana , she having a Sovereignity of this seeming Ball of Fire , given her by the Poets : At her Back are Dogs pursuing a Stag , the emblem of Hunting , of which she is , by the same Authority , Goddess ; and underneath is a Landskip with Deer therein , the Victims offered up to her Divine Recreation . The PLANETS , Part 3. Chap. 9. fol. 70. Represented by the Personal Figures of those Heathen Deities from whom they borrow their Names . As Luna , Mercury , Venus , Apollo , Mars , Jupiter , and Saturn . The reason for these Gods and Goddesses being so adorned , are given in the explanation of the Sculpture , representing the motion of the Planets : The Child in Saturns Arms , and which he seems to devour , relates to the Story fathered on him by the Poets , that as soon as ever his Coelestial Spouse was brought to Bed , he did eat the Children , to prevent their dethroning him of his Kinddom . The GLOBE and SPHERE of the Earth and Heavens , Part 4. Chap. 1. fol. 81. Represented by the Personal Figures of those two great Geographers , Ptolomy and Copernicus , the one with a pair of Compasses , taking seemingly the distances of some places , delineated on the Globe of the Earth ; and the other holding a Sea Chart , having a pair of Compasses , and the Sphere of the Heavens before him : The Figure seeming as it were to take an Observation , represents the Learned Tycho ; on the Table are Charts , &c. FOUNTAINS and RIVERS , Part 4. Chap. 4. fol. 88. Represented by the Figure of Thame , being an Old Man lying in the Reeds or Osiers , having an Oar in his Right Hand , and leaning his Left Arm on a VVater-Pot ; as also by the Figure Isis , being a VVoman sitting on a Rock , having also a VVater-Pot . Thame and Isis are storied to be Man and VVife , and stand as Godfather and Godmother to that most ample River , vulgarly , Thames , it bearing the name of both , as Thamesis ; as also by the Figure of a Nymph of the Rivers and Fountains , named Arethusa , holding a VVater-Pot and Flowers ; and by the Figure of a Young Man named Alpheus , having a VVater-Pot and Cornucopia of Flowers , being the Patron of Fountains . The Figures are thus coupled , to shew that the Friendly Communication between Rivers and Fountains , resemble that between Man and VVoman : The Figure in the Sky , and seeming to press the Clouds , is the emblem of Rain . The SEA , Part 4. Chap. 5. fol. 90. Represented by Neptune , God of the Sea , drawn in his Charriot by Sea-Horses , having his Trident in his Hand , being his watry Scepter , the Hooks at the ends of it , are to lay hold on his subject Fishes , who fail in their Allegiance : Behind him are the two Figures , holding and seeming to sound through their Sea-Shels , are representations of Tritons , Creatures formed by the Poets to serve his floating Divinity in the nature of Trumpeters . In prospect the Sea with Ships , &c. The FIRE , Part 4. Chap. 7. fol. 99. Represented by Vulcans Cave , in which the Cyclops ( the Journey-men Blacksmiths of Vulcan ) are at work , in making Thunderbolts for Jupiter , who is placed above in the Clouds , attended as usually with his Eagle , as inspecting the well-making of his Weapons ; and behind the Anvil stands a Forge of Fire , with a Figure seeming to blow it , which causes that Smoak that arises from the Funnel placed by Jupiter ; below the Cyclops Feet lie Breast-plates , Helmets , &c. in some measure emblems of Fire , as owning their form and make , to his Power . EARTHQUAKES and SUBTERRANEAN FIRES , Part 4 Chap. 8. fol. 103. Represented by the Figures of the four windy Gods , Bo●●as , Eolus , Auster and Zephirus , each with utmost strength blowing into a Cavity of the Earth , and heaving up of the Rocks , ●which in several places seem to break forth , and thereby throw down Trees and Buildings : At a distance the figures of Men , Women and Children affrighted , and running to avoid being buried in Graves of Nature , making the Mountain , whose top breaths flames of Fire , represent Mount Etna ; these Convulsions of Nature are thus properly emblematis'd , it being the general Opinion that they are caus'd by Winds , being inclosed in some cavities of the Earth , who are forced to break the surface to find a passage to their proper center . The AIR , Part. 4. Chap. 11. fol. 108. Represented by Juno the Monarchess of this Element , with all her Poetical Equipage about her , and attended by her four Handmaids , Iris , Imber , Cometa and Rugida , who all have their Aerial Imployments under her ; as 1 st . Iris takes care of putting out and taking in the Rainbow . 2 dly . Imber disposeth the Rain . 3 thly . Cometa placeth the Comets . And 4 thly . Rugida destributeth the Dew ; all which employments are exprest by the emblems that each of them bear . METALS , Part 5. Chap. 1. fol. 113. Represented by the 7. Deities , who according to the Poets , patronise the 7. Metals ; and they are placed in the Clouds : That in the midst is Apollo , or the Sun , holding in his right Hand a wedge of Gold , being the Metal he is said to produce ; on his right Hand sits Luna , having a wedge of Silver in her Hand ▪ being the Metal that owes its being to her proper bounty ; that on the left is Mercury , arm'd and crown'd ; he is said to produce Quicksilver by his celeritous Divinity : The four others that appear behind , are likewise said to produce the four other Metals ; as Mars , Iron ; Jupiter , Venus and Saturn , Brass , Lead and Copper : In the lower part on the ground , are Directors and Diggers of Metals . The LOADSTONE , Part 5. Chap. 10. fol. 135. Its Virtues and Properties are demonstrated by the three Figures representing three Philosophers , one of whom holds a Knife , with a Needle on the edge ; another having the Compass before him , and the other holding a Loadstone at a distance : The Figures of two other Philosophers seemingly discoursing of the magnetick power of this wonderful Stone . The WINDS , Part 6. Chap. 2. fol. 136. In the Sculpture , Apollo sitting in the Clouds , and pointing to the God of the Winds , Eolus , who sits in the Clouds below him , adorned as before , commanding the four Winds exprest by the four Figures of Boreas , Zephirus , Eolus and Auster , with their proper emblems as before , to discharge their Office ; their execution of his Commands are visible in the effects of the Wind upon the seemingly tost and overwhelm'd Ships in the Sea below . The NYMPHS of the Air , emblems of Clouds , Mist , Snow , Hail , Rain , Dew , &c. Part 6. Chap. 3 , 4 , 5 , 6. fol. 139. 1 st . Represented by two Nymphs of the Air in their proper array , young , beautiful and winged , stretching out their Arms , as gathering together and dilating the Mists . 2 ly . The Nymph Nix , scattering of Snow through a Sieve . 3 dly . The Nymph Imber , pressing the Clouds to provide Rain . 4 thly . The Figure of a Man scattering small Hail out of a Water-Pot ; and underneath three Figures , the middlemost representing Dew , the 2 d. Snow , and the 3 d. small Hail . In prospect a Landskip covered with a cast of each of their Offices to which they are assigned by the Poets , and therefore may properly be used in Sculpture , it being an attendant of Painting , which is Poema silens . STORMS and THUNDER , Part 6. Chap. 7. fol. 147. Thunder is represented by Jupiter , preparing to cast ▪ his noisie Bolts : and the Storms by Eolus , the God of the Winds , commanding the four Heads who breath out Storms in their Stations , as Boreas in the North , Zephirus in the West , Auster in the South , and Eolus in the East : Below is the true emblem of a Storm , being Ships tost in a rugged Mountanous Sea ; the Fires seeming to blaze on the Main Yards of the Ship are two Sea Wills in the Wisp , and made by the Poets , tho' not Gods , yet Godlings of the Sea , and Protectors of Sea●aring-Men , and by them named Castor and Pollux , the names of two Brothers , reported to have been drown'd . The RAINBOW , Part 6. Chap. 9. fol. 151. A Rainbow proper , surmounted by Iris the Goddess thereof , the Rays of the Sun darting on it ; by which , as we conjecture , it receives those beautiful and various Colours : The Figures below , represent Philosophers as consulting concerning its Nature ; and about that Ignis-Fa●uus which appears in the Fields of the Landskips ; the representation of a Nyn●h or beautiful Virgin , placed on the Rainbow , took its rise from fan●y , but since hath been attested for reality by a Captain of a Ship , who solemnly asserts his having seen it so . GARDNING , Part 7. Chap. 1 fol. 156. In the Sculpture , the 1 st . Figure is the Goddess Rea , Commandress of the Earth , seated thereon , as her proper Throne , having a Castle on her Head , and a Lion by her Side , emblems of her Strength and Power ; next her is Hebe , one of Jupiters Cup-bearers , pouring out Wine on the Earth , as the Tyth due to her producing it ; the next Voluntina , who assists the Flower in budding ; then Flora , embracing the Plantine-Tree , being consecrated to her , and holding in her Hand a Flower , being Goddess thereof ; behind Rea is Virtumnus , holding one Fruit , and eating another ; on the lest side of the Tree is Nodinus , holding the Leaves as it buds into Branches : Next is Pros●rpina , who hath the care of the Bud till it is out of the Earth ; behind Nodinus is Patelena , holding a Leaf in its full perfection : The reason for thus representing Gardning , arises from the authority of the Poets , who have made all these Gods and Godesses concerned in the prefervation of those Vegteables that adorn it , tho' I suppose they only meant the Garden of the Muses , in which none but they and their Successors were to be allowed the liberty of walking : In the upper pa●t of the Sculpture , are the representations of Jupiter , Juno , Saturn , Feronia and Luna , in their proper emblems , relating to their several Empires , as before discoursed of , and intimates the necessity of the good will of Heaven , and temperate seasonable Weather to bring the Fruits of the Earth to perfection . NATURE of ANIMALS , Part 8. Chap. 1. fol. 175. For Animals begot , they are represented by a Woman suckling her Child , having a Cradle standing by her ; their Thirst represented by a Cow a drinking ; their Hunger by a Deer grazing , their Action by two little Dogs a playing ; their Sleep by a Cat a sleeping ; their Wakefulness by a Cock sitting on his Pea●ch , and seeming a Crowing ; their Sickness by a Farrier bleeding of a Horse , and their Death by a Horse lying dead . IMAGINATION , Part 9. Chap. 6. fol. 214. Represented by a Woman in a sendentary posture , having on her Head a pair of Wings , and a Coronet composed of small Figures , which Figures denote the productive faculty of Imagination , and the Wings its swiftness : The Child standing by the Figure of Imagination , partly black partly white , denotes the strength of this Passion , being able ( as by this Example appears ) to perform those things , which neither Human Wisdom , nor the common way of Natures working could effect : The other Figure having Eyes vailed , and Wings on her Back , represents what Women call longing , 't is swift as Wings to Desire , and blinded to Reason . MEMORY , Part 9. Chap. 7. fol. 216. Represented by a Woman , having a Steel Cap on her Head , set with Jewels , denoting the Strength and Riches of this Faculty ; she is putting her Finger to her Ear , as the proper Organ by which this Good is received ; and in her Hand she holds the Picture of a Man , whom she knows , tho' absent , by the means of Memory ; below are the representation of Children conning their Lessons , and of a School ▪ Mistress , who seems awing them with a Rod ; The Statue on Horseback is the representation of King Charles II. as the properest object to exercise this Noble Faculty of Memory upon . The Author having asserted in his Discourse of the want of Sense and Knowledge in Brute Animals , that they are nothing more than Machins , moving in their several Stations by Natures Clockwork : His ingenious position is illustrated by the Sculpture that fronts the said Tract . First on the foreground is the Figure of a Woman , being the representation of Daedalus his Wooden Venus , which imitated the Action of a Woman ; next in the midst the Figure of a Man , being that Iron Statue , which presented a Petition to the Emperor of Morocco , as taken notice of in the latter end of that Authors Preface to the Reader . On the Right Side of this Figure , is that of a Man with a Drum , which artificially beats on it , and at the same time performs several motions with his Head and Eyes ; which Clockwork was shewn in London not long since . Between these aforesaid three Figures , is a Dial and a Dog sitting , which is another piece of Clockwork . At a distance on the second ground , is supposed the Army of Maximilian the Emperour , over whose Head is an Eagle , being the representation of the Norimberg Eagle , framed by Athanasius Kirchir , which flew over his Head , and accompanied him in his return to the City . Then on a Hill , a Statue of a Man , which saluted the Sun at his rising , with a Hymn Musically composed : And to conclude , a Pidgeon framed by Architus the Tarentin , which flew in the Air like a living Bird ; all which the Author hath taken notice of , to which I refer the Reader . Figures or Schemes in the Institution of Philosophy . Plate 1. Note F. Signifies Figures P. Part C. Chapter . Figures or Schemes in the Institutions of Philosophy . Plate 2. Figures in the History of Nature Plate 3. Benefactors to this Work folio 1. Her Royall Highness the Princess Ann of Denmark &c. a. 3 The Rt. Noble Frances Jeresa Stuart Dutchess Dowager of Richmond , and ●ennox &c. a. 4 The most Honourable Rose Marchioness ▪ Dowager of Antrim &c. a. 5 The Right Honourable Iohn Lord Cutts Baron of Gowran &c. a. 6 Sr. Thomas Mompesson of Bathampton in Wilt shire Knight ▪ 7 Henry Portman of Orchard in the County of Somerset Esqr. 8 Ralph. 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Sr. Ralph Delaval of Seaton Delaval in 〈◊〉 K t one of the Comissioners for 〈◊〉 the office of L ● High Admiral of England 〈…〉 Admiral of their Ma ●is Fleet 52 S r Iohn Wentworth of North Elmes-hall in 〈◊〉 West Rideing of Yorke Shire Baronet 53 Sr. Rowland Gwynne of Lanelweth in the County of Radnor Knight 54 Sr. Denis Hampson of Taplow in Buckingham ▪ Shire & of Bradwell in ▪ Oxford-Shire Baronet 55 Sr. Barkeley Luey of Netley in Hant Shire Baronet 56 Sr. Iohn Bramston of Screens in the Parish of Roxwell in Essex Knight of the Bath 57 Phesaunt Crisp of 〈◊〉 Square in London 〈◊〉 〈◊〉 Son of Samuel Cri●p of ●●apham in Surrey Esq ; 58 William Bridgeman of the Citty of Westminster Esq one of the Clarks of their Majestys most Honourable ▪ Privy Councill &c. 59 Francis Forbes of the Citty of London Gentleman 60 Sr. Iames Edwards of the Citty of Yorke Baronet 61 Sr. Solomon Swale of Swale-Hall in the North Rideing of Yorke Shire Baronet 62 Martin Folkes of Grais Inn in Middlesex Esq 63 Thomas Phillips of Southampton in Hantshire Esq Second Engineer of England &c. a 64 Iohn Berkeley of Swake in Glocester shire Esq 65 Iohn Gilbert of S ● . Martins in the Fields in Middlesex Gent descended of the Gilberts of Frodley in Stafford shire 66 Reginald Marriott of the Parish of St. Clements Danes in Middlesex Esq 67 Sr. Christopher Greenwile of Preston in Lancashire Knight . 68 Thomas Brotherton of Hey in the County Palatine of Lancaster . & of Grays ▪ Inn in Middlesex Esq . 69 Francis Sambrooke of the Middle Temple London Gentleman . 70 Sr. William Holford of Welham in the County of Leicester Kt. descended from the antient family of 〈◊〉 Holfords of Holford 〈…〉 71 Sr. John Morden of Ricklemarsh in the Parish of Charlton in Kent Baronet . 72 Christopher Park●r of 〈◊〉 in the County of Lancaster Esq . 73 Nathaniel Boothe of Mottram Andrewe in Cheshire Esq . 74 Theodore Iohnson of the Citty of London Gentleman . 75 Hallyday Mildmay of Shawford in the Parish of Troyford in the Coun●● of Southamlon Esq Benefactors to this Work. Folio . 4. 76 The Rt. Hon ●le . Charles Lord Herbert Marquess & Earle of Worcester , eldestson to his Grace Henry Duke of Beaufore &c. a. 77 Sr. Iohn Leveson-Gower of Trentham in Staffordshire Baronet . 78 Simon Harcourt of the Middle Temple London Esqr. 79 George London of their Majesties Royall 〈…〉 in St. Iame's 〈◊〉 Gen● Deputy 〈◊〉 and Mr. Gardiner of their 〈◊〉 Gard●●s & Plantations in England . 80 Chichester Graham of W●tton Conyers in the North Rideing of York-shire Esqr. 81 Sr. William Hooker of Greenwich in Kent and of the Citty of London Kt. & Ld. May or . thereof Ano Do● : 16●3 82 Peter Rycaut of King Stephens Castle in Ofpring in Kent Esqr. only Son and heyre of Collonell Phillip Rycaut , and nephew to Sr. Paul Rycaut Knight . 83 Ferdinando Gorges of the Citty of Westminster Senior. Esqr. , Grandson of Sr. Ferdinando Gorges of Ashton Phillips in 〈◊〉 set shire Knight . 84 The Honourable Sr. Richard Onslow of Clandon in Surrey Baronet . 85 The Right ●●●●●rable Iohn ▪ Sheffeild , Baronet of ▪ ●otterwick , Earle of ●●lgrave &c. ● ▪ 86 The Right Honourable Henry Lord Viscount Sydney . 87 Captaine William Wallis of St. Martins in the Fields in Middlesex . 88 The Hon ble . Samuel Pepys of the Inner Temple Esq ● Secretary of the Admiralty of England to K. Charles , and Iames the Second . 89 Henry Gorges of Eye in Herefordshire Esqr. 90 John Pulteney of the Parish of St. Jame's in Middlesex Esqr. 91 The Right Honourable Edward Lord Radcliffe Son and heyre of the Right Honourable Francis Earle of a Darwentwater &c. a. 92 Sr. Godfrey Kneller of Lubeck in Saxon● ▪ and of St. Pauls Covint Garden in Middlesex Knight , Principall ●ainter to their 〈◊〉 〈◊〉 93 Sr. William Thomson of the Middle Temple Kt. their Ma t●s . Sergeant at Law &c. a. 94 To the Right Honourable William Wentworth ●arle of Strafford , 〈◊〉 〈◊〉 and Baron Wentworth Wood ▪ house New march overs 〈◊〉 and 〈◊〉 Knight of 〈…〉 95 The Right Honourable Elizabath Countess Dowager of 〈◊〉 〈◊〉 ●aidston , and 〈◊〉 of Ea●● 〈◊〉 &c. a ▪ 96 John Hervey of Ickworth in the County of Suffolk Esqr. 97 Leivtenant Collonell Andrew Wheler of Datche● in Buckingham shire one of the Captains of their Ma t●s . first Regiment of foot 〈◊〉 98 Sr. Robert Clayton of Marden in Surrey and of the Citty of London Knight and Alderman ▪ Lord Major thereof 1680 99 Sr. Basil Firebrace Knight Alderman and Sheriff of London Anno Domini 1688. 100 Richard Richardson of the Middle Temple London Esqr. one of the Citty Councell for the Sheriffs Court. Benefactors to this Work. Folio . 5. ●01 Sr. Iames Butler of Lincolns Inn in Middlesex Knight , Steward of his Majestyes Palace and Marshalsea . 102 Sr. Charles Kemeys of Kevenmakley in Glamorganshire Baronet . 103 Iohn ▪ Harborough late of Emanuel Colledge in Cambridge ▪ and now of the Citty of London ▪ M. D. descended from the Harboroughs of Win-farthing in Norfolk , which family descend●● from the Harboroughs of Leicester 〈◊〉 . 104 Sr. Comport Fitch of Eltham and Mount-Mascall in Kent ▪ Baronet , son and heyre of Sr. Thomas Fitch of the Sr. places Knight & Baronet , by Ann Daughter & 〈◊〉 of Richard Comport of Eltham in Kent Gent de●●sed ▪ 105 Thomas Ryves of Ransford in the County of Dorset Esqr. 106 The Right Honourable Charles Earle of Dorset and Middlesex , Baron Buc●●urst and Cranfield , K ● . of the ●arter , L ● ▪ Chamberlaine of his 〈◊〉 〈◊〉 〈◊〉 one of the Lords of their 〈◊〉 most Honourable Privy Councell &c. a. 107 The Rt. Hon ●le . Thomas Earle of P●●brock & M●nt●omery , Baron Herbert of ●●urland , Cardiff , R●ss of K●●dale , Parr , 〈◊〉 & S ● . 〈◊〉 Ld. 〈◊〉 of 〈◊〉 one of 〈◊〉 L ds . of the 〈◊〉 L ● . Pr●●● Seals , 〈…〉 of 〈◊〉 〈◊〉 most Honourable Privy 〈◊〉 . 108 The Right Honourable Iohn Earle of Exeter ▪ Baron Caecill of Burleigh &c. a. 109 The Right Honourable Iohn Earle of Bristoll , Baron Digby of Sherborne &c. a. 110 The Right Reverend Father in God , Dr. Thomas Spra● Lord Bishop of Roches●●r , Dean of Westminster 〈◊〉 111 James Mundy of the Inner Temple Esqr. one of the Iudges of the Sheriffs Court London . 112 The Reverend Knightley C●etwood of Ch●●wood in Buckingham shire Lineally descended from the most antient - Barons of Wa●●ll , alias Wood●●ll in Bedford shire . 113 The Worshipfull Francis Lane of Glendon in the County of Northampton Esqr. And to 〈◊〉 his wife , oldest Daughter , and 〈◊〉 of Andrew Lant of 〈◊〉 in the said County Esq r deceased . Booke i. Part i. Chap 1. G. Freman Inv. I. Kip Sculp To the Right Honourable John Lord Cutts , Baron of Gowran ; Captain-Generall and Governour of the Isle of Wight ; Constable of Carisbrooke Castle ; Brigadieer Generall over all the Infanterie in their Majestyes Service ; and Collonell of a Regiment of Foot &c. a. This Plate is humbly Dedicated by Richard Blome . The First Part : OF THE INSTITUTION OF PHILOSOPHY . CONCERNING LOGICK . INTRODUCTION . CHAP. I. Of the Nature and Constitution of LOGICK . I. What we are to understand by the word LOGICK . FOrasmuch as the Mind of Man is obnoxious to many Errors , as well in the searching out of Truth , as in the pursuit of that which is Good , in both which it is frequently mistaken ; two Arts have been found necessary , whereof the former might direct the Will in the choice of the True Good , and the latter assist the Understanding in the discovery of Truth . The first of these , called ETHICKS , is an help to human Infirmity , directing the Mind of Man in the prosecution of Good , and shewing it what it ought to embrace , and what to avoid ; the other called LOGICK , is the Rule of Man's Thoughts , which he is to observe in the framing of them , and by means whereof he may communicate his Perceptions and Judgments to others . II. The Definition of Logick . For LOGICK is nothing else , but the Art of right Thinking , or of using our Reason aright ; where by the word Thinking we do not only understand simple Idea's or Notions , but also Judgments and Discourses : For he who Reasoneth or Judgeth , thinks as well as he , who only attends to simple Notions . So that Logick extends it self to all kind of Thoughts , and gives Rules to all the Actions of the Mind ; because Discoursing , Judging and Conceiving , are but so many different Modes of Thinking . III. Why Logick is called the Art of right Thinking . It is to be observed , that LOGICK is not simply said to be the Art of Thinking , because Thinking is Natural to us , and the spontaneous products of our Mind ; but the Art of Thinking aright . For since Thinking may be performed well or ill , there is need of an Art that may rightly direct the Actions of the Mind , and prescribe Rules for the discerning of Truth from Falshood . For as the Art of Husbandry teaches the convenient ordering and disposing of those Plants , which otherwise grow of themselves and at random : So Logick furnisheth us with Rules to define Things , to sort them under their General Heads , and furnish them with their Adjuncts . IV. How Logick assists the Mind . Wherefore LOGICK may be said to be the Art of Knowing each Knowable that can be the Object of Human Understanding : Not that it informs the Mind of the Things themselves , for that is the Duty of Natural Philosophy ; but because it discovers the Ways of right knowing in general , and delivers those Rules by which the Mind of Man may be directed , whilst it endeavours to know any thing , so as not to wander from the Path of right Reason . V. Four things required to the use of right Reason . Now , that a Man may use right Reason , and be able to frame his Thoughts aright , and interpret them to others ; it is necessary for him to Perceive aright , Judge aright , Reason aright , and Order aright . VI. First , to Perceive . We are said to perceive a thing , when we clearly and distinctly conceive the Object offer'd to us : As when we represent to our Thoughts God , an Angel , a Circle , a Triangle , and stop there , without forming any Judgment concerning them . And the Form , by the immediate perception whereof we are conscious of our knowing any Object , is called an Idea . VII . What we are to understand by the word Idea , or Species . For by the word Idea we are not to understand any Representations imprest upon our Senses ; but those Images of Things , which the Mind frames by Thinking . For the easier apprehension whereof we are to observe , that in the Idea or Notion of a Thing two things are to be consider'd : First , That it is a Modus inherent in the Mind , from whence it proceeds : The other , That it shews or represents something . The former of those proceeds from the Mind , as its effective Principle ; the latter from the Object , or thing apprehended ▪ as from its Exemplary cause . So that when we name the Species of any thing by Thinking , that first view of-our Mind , by which it represents and conceives the Thing as present , is called Perception , or in other words , The first operation of the Mind , or Simple Apprehension . So that this Perception is said to be Simple , not with reference to the Object , which often is complex ( as when the Sun is considered as a Light or Lucid Body ; ) but with respect to the Modus , under which the Thing is conceived . VIII . The Second , to Judge . We are said to Judge , when we affirm or deny any thing of the said known Objects ; or when we by the Action of our Mind joyning two Idea's , assert the one to be the other ; or deny the one of the other . As when considering the Idea of the Sun and that of Fire , we affirm the Sun to be Fire , or deny the Sun to be Fire . This way of Thinking is different from the foregoing , forasmuch as this is not the Simple apprehension of a thing ; but a Compound , viz. an Affirmation or Negation , and is commonly called a Proposition , because the Mind thereby propounds its Sentiment of Things . It is also called Judgment ; forasmuch as by this Mode of Perceiving , we do not barely apprehend a thing , but also judge or determine what it is , or is not . IX . The Third , to Discourse . To Reason or Discourse is that Action of our Mind , which frames a Judgment of many others , or which from two Propositions , or from one , infers another : As for Example , After it hath judged that a Body is a Substance extended in Length , Breadth and Depth , and that Heaven is a Body ; infers the Heaven to consist of three Dimensions . So likewise observing that the Idea of a Man agrees with that of an Animal , but doth not agree with the Idea of a Plant , concludes , That therefore neither can the Idea of a Man , suit with that of a Plant. Wherefore finding that Man is an Animal , and that an Animal is not a Plant , it infers this Third Proposition , that therefore Man is not a Plant. This way of Thinking is call'd Discourse , because by running from one Proposition to another , it comes to a Third . X. The Fourth , to Order . To Order is an Action of the Mind , whereby many things found in the same Subject , are disposed in a fit and congruous manner : As when the Mind , after it has fram'd several Idea's , Judgments and Argumentations , digests them in the most convenient and fit manner , for the ready and distinct conceiving of them . XI . Of what use the observing of these Rules is . So that he that would proceed according to Order , must begin with those things that are more known , passing on to such as are less ; and in the same manner proceed all along from one thing to another , so as that which goes before may always afford light to what follows . If any one saith , That all these things may be done by the conduct of Nature only , since Experience shews , that such Persons sometimes perform them more exactly , who are wholly ignorant of the Rules of Logick , than they who have studied them : We freely grant as much , nor do we pretend this Art to consist , in prescribing the Modus how those Operations are to be done , since Nature alone is sufficient to make us Perceive , Judge , Discourse and Methodize , without any foreign assistance . Yet is not Logick therefore to be judged useless , because it helps us to examine our Actions , and observe those Things which we do by Natural instinct . XII . The Threefold use of Logick . As , First , that we may be assur'd that we use our Reason aright . Secondly , That we may with more ease discover the Mistakes , or supply the Defects , that may intervene in our Mental Operations . For it oft happens , that by the sole Light of Nature we are aware of some Falshood , and yet are ignorant where that Falshood lurks . As we find that Men ignorant of the Art of Limning , are often offended with a Fault they see in a Picture ; tho' they cannot make out what properly the Defect is wherewith they are displeased . Thirdly , That the Nature of our Mind may be the more distinctly known by us , whilst we observe and give good heed to those Actions that are proper to it , and which vastly raise it above all Bodily things . Wherefore seeing that the Mind suffers it self sometimes to be impos'd upon by false Representations , it has been found necessary to prescribe some Rules by which it might be assisted in its Operations , in order to a more certain reaching of Truth . And accordingly the whole aim of Logick is to inform us , how we ought to make use of our Reason , and what Evidence we ought to have , before we give our Assent or Dissent to things , which by Idea's are presented to our Understanding . XIII . Logick divided into Four Parts . Whence follows , that LOGICK is to be divided into Four Parts , according to the divers Reflections we have of these Four Operations of our Mind . The First , concerning Idea's , or the simple Perception of Things : The Second , of Judgment , or of Propositions , wherein is Truth or Falshood : The Third , of Discourse or Syllogism : The Fourth , of Method , or the Orderly digesting of our Thoughts , by which , as by so many Steps , we arrive to the Modus or Way of Knowing . Forasmuch as by the first we are led from Inconsiderateness to Attention ; by the second delivered from Doubts and Errors ; by the third we are accustomed to Reasoning ; and by the last , we infallibly prove some Truth , or demonstratively persuade the same to others . CHAP. II. Of the true Vse of LOGICK , shewing that Logick is useful and necessary to the Conduct of a Rational Life . I. The Opinion of the Ancients , concerning Logick . LOGICK was always in so great esteem amongst the Ancients , that some of them admir'd it as a thing inspir'd from Heaven , and look'd upon them as rais'd above the Condition of Men , who understood the Rules of it , and were dextrous in the practice of them . Wherefore Cicero tells us , that the Contemplation and Knowledge of Nature is , as it were , by a Wall or Rampart secured and defended by the way of Reasoning , by the Judgment of what is True or False ; and by a kind of Art of knowing what is agreeable and comporting with every thing , and what is contrary to them . And for this Reason the Philosophers of Old have bestowed several Names upon it , and measuring the dignity of it by its Necessity ; have called it , the Medicine of the Soul , the Organ or Instrument of Sciences , and the Eye of the Mind . II. The Logick taught in the Schools hath its use . True it is , that LOGICK seems to have declined from its primitive Majesty , since it now chiefly considers Forms , and is in a manner wholly taken up with the Resolving of unprofitable Questions : Yet neither is it wholly to be undervalued upon that account , since those Questions exercise the Wit of Men , and are not a little conducive to the examining of the Difficulties we meet with in other Sciences . As Geometricians , by exercising themselves in the crabbed Questions of Algebra , which are altogether Abstracted , and of no use for the Conduct of Life , are nevertheless thereby disposed for the understanding of other difficult Problems , that are of great use in the Life of Man. In a word , which way soever we consider Logick , we shall find it to be of use , and in that regard not inferiour to other Arts or Sciences . III. As Physick cures the Body , so Logick does the Mind . This will be evident , if we consider Man in himself , and the Diseases he is subject to . For a Man consists of Body and Soul , which both of them have their Infirmities and defects . So that as Physick takes care of the Body , by removing Sicknesses that afflict it ; so there is need of Science , that may assist the Mind , by dispelling of its Darkness . Wherefore Logick takes care for the Souls health , and consequently is as necessary to the Intellectual Life , as Physick is to the Body : Nay , and is by so much the more excellent and necessary , by how much the Nobleness of the Soul exceeds that of the Body , and by how much its Diseases are more hidden and more difficult to be cured . IV. Why Physicians are more esteemed than Logicians . Neither is there any great reason of Wonder , why Physicians are so much respected every where , and favour'd with Honour and Riches ; whereas Logicians are commonly very despicable : For the reason of this is , because the Diseases of the Body do affect the Soul ; whereas the Disorders of the Mind do only afflict it self , and communicate little or nothing of their Smart to the Body ; whence it happens , that in a manner all Mankind choose to lead an Animal Life , and but very few do follow a Spiritual or Mental Life . To which may be added , that the greatest part of Men are little concerned about the Vices of the Soul , and being only intent on the Care of their Bodies , think themselves most happy as long as they are in health ; and all this , because they are drowned in the flesh , and wholly addicted to sense . V. That Nature alone is not sufficient to direct the Operations of the Mind . It is Notorious , that we brought no Science into the World with us , but that the same is acquir'd by Industry , or received from Masters : But seeing there are few that are able to Teach us , and that they who undertake it are frequently deceived themselves ; we must find out a Method , whereby we our selves may correct our Errors , and endeavour to mend our Faults . VI. The force of Human Reason . If you say , that our Reason is sufficient for this , whose property it is to know the Natures of Things , and to discern Truth from Falshood . I answer , That indeed NATURAL LOGICK , or the very force and strength of Reason , which we have by Nature , doth not a little conduce to the attaining of Truth : For it consults those Rules Nature her self has prescribed , and being informed thereby , examins its Operations and Discourses by them ▪ For to speak truth , we naturally follow almost all those Rules , which after long study and great pains taking , Logicians have delivered to us ; so that Nature it self seems to have taught us the Art of Reasoning ; but yet we find , that she is not sufficient to furnish us with all necessary Knowledge , except she be assisted by Precepts , and perfected by Art. Who can deny , but that the Faculty of Painting is born with Man ; and yet Art is necessary for the right forming of Images . All Men are endued by Nature , with a power of Speaking and framing of Words , which yet will never be reduced to Art without Use and Exercise ; since it is clear beyond doubt , that should an Infant from his Birth be left alone , it would continue Dumb all its Life , unless it were taught to Form Words and give them their due Sound . VII . The Necessity of Logick , proved by Galen . Thus Galen proves the Necessity of Logick against Erasistratus by this Argument ; Either every thing follows from every thing , or not : If you assert the former , then it will follow , that because a Crow is black , and a Swan white , Erasistratus is a Fool and mad ; if the latter , then you must grant there is need of Art , that may inform us what follows and what not . For we cannot make out that a Consequence is right , or a Demonstration good , without the assistance of Logick . VIII . Natural and Artificial Logick . LOGICK therefore is to be distinguish'd into Natural and Artificial . Natural Logick is that force of the Mind , by which it rangeth its Thoughts and reduceth them to order , or else Discourseth spontaneously without observing any order . Artificial Logick is that which is acquired by Use and Practice , and at first took its rise , and increase afterwards from various Observations taken from the Actions of the Mind . IX . The Use of Artificial Logick . Wherefore tho' we bring Natural Reason along with us into the World , yet is not that sufficient to direct the Actions of our Minds : For we find that notwithstanding the Use of Reason we fall into many Errors , and labour under the Prejudices of Infancy ; and therefore must conclude , that Artificial Logick is not only useful , but necessary to cure the Diseases of the Soul , and to direct and guide its Operations : Where , by the Souls Diseases , I do not mean Sins and Moral delinquencies , the Cure whereof is endeavoured by Divines and Moralists ; but the Weakness of our Mind in the Perceiving of Things ; viz. all manner of Errors , Confusions and Obscurities of our Conceptions ; False and uncertain Judgments , and undue Consequences in our Reasonings , the discerning and removing whereof is the whole business of Logick . X. Doctrinal and Practical Logick . There is another common Division of LOGICK into Doctrinal and Practical . Doctrinal Logick is that which delivers the several Rules , directing us in Perceiving , Judging and Reasoning . Practical , is that which applies those Rules to Use and Practice : For which reason the Ancients called the former Abstracted or Separate from Things ; but this latter , Concrete or joyned to the Things themselves we are discoursing of . The First Part. Of the Clear and Distinct Perception of the Mind . SEing it is evident from the foregoing Discourse , that there are Four Parts of LOGICK , correspondent to as many distinct Operations of the Soul , about every knowable Object : We will here begin with the First Part of it , which directs the simple Perceptions and Apprehensions of our Mind . And to perform this the more effectually , we will endeavour to take out of the way the several Hindrances of Science . CHAP. I. What the Hindrances of Science are , and how to be removed . I. The chief Causes of our Mistakes . THere are Two things by which we are easily led aside into the By-way of Error and Falshood , viz. Prejudice , which makes us take up any thing for Truth , before sound Reason hath convinced us of it ; and Slavishness , by which we are so addicted to the Opinions of others , that we think it a Crime to differ from them . II. We are very subject to be seduc'd by the Prejudices of Infancy . Wherefore it is no wonder that we find so few Men truly Wise , and who know the Causes of Things aright , seeing they scarce consider any Thing well and duly throughout their whole Life , and do not so much give their assent to Right Reason , as to their Prejudices and the Testimony of their Senses . For the force of Prejudices is so prevalent with some , that they cannot admit any thing for Truth , which is not grounded on those false Opinions they have suck'd in from their Cradles . Wherefore it will be worth our while to shew , how vain the Things are we then know , and that we ought to distrust and suspect whatsoever proceeds from such weak Causes . For what did ever any Infants perceive , which they did not wholly refer to their Bodies , and which they did not desire or dread , according as they fancied them hurtful or grateful to the same ? Thus we see they are pleased with the Light and Shining things , because Refulgency with its Beauty pleaseth their Eyes ; whereas they dread a Rod , because with it they are chastis'd and put to pain . Wherefore Children judge of things , as they appear to their Senses ; As that the Earth is far bigger than the Sun , and the rest of the Heavenly Bodies ; because the Earth is nearer to them , the other being at a great distance from them . Thus likewise they think , that there is more Matter in Lead and other Metals , than there is in Fire or Air ; because they find more Weight and Hardness in the one than the other . And again , because they perceive no more Brightness from the fix'd Stars than from the small Light of a Candle , they are apt to think that the Stars do not exceed the bigness of a Candle , and therefore fancy them as so many bright and shining Studs fix'd in the Firmament of Heaven ; whereas there is no Natural Philosopher but knows , that the fix'd Stars are equal to the Sun both in Bigness and Brightness . III. The Prejudices of Childhood hinder us after we are come to the use of Reason . Now these Errors are not only to be found in Infancy , but in process of Time they get strength , and become so rooted into Mens Minds , that they accompany them the whole course of their Lives . Hence it is that we meet with some that have the Gravity of Old Age , but at the same time are subject to the Weakness of Children . Which Mistakes arise from hence , because they suppose that the Opinions they have taken in during their Childhood and Youth , are inborn Notions , and common to all Mankind . Whereas they ought to consider , that they have admitted many things for Truth , without any sufficient Examination , and that therefore they ought rather to think them to be false than true . But the case is the same with them , as with those that have Sore-Eyes , who delight in Darkness and are offended with the Light ; for they hug their Errors , and are loath to part with them . IV. Some only give credit to the report of their Senses . Some of the Philosophers of Old were not free from this Weakness , who asserted the Sun not to be above two Foot over , because they had never seen it greater . And it was to no purpose to persuade them by Astronomical Arguments , that it was not only far greater than so , but many times bigger than the Earth ; because their preconceived Opinion was so rooted in them , that they could no otherwise apprehend it . Thus likewise when they were Children , and thought of nothing but what was Bodily , they thought nothing could be Corporeal , but what must be Sensible also , from which Prejudice they concluded afterwards , that there could be no Insensible parts . If one argues against this , that such Parts must of necessity be admitted to avoid a Vacuum in Nature , and for the Explication of many Natural Appearances ; they have nothing else to answer , but that they cannot see them , and that they are not certain of any thing , except it fall under their Senses . From the same Prejudice it is , that they conceive all Immaterial things after the manner of things Sensible , and apprehend the Mind of Man , not as a Thinking Being , void of all Matter , but like a Wind or Fire infus'd into the Grosser parts of the Body , to which tho' they attribute the Name of Spirit , yet conceive of it under a Bodily likeness . Wherefore also they greedily embrace that Maxim of Aristotle , That there is nothing in the Understanding , which was not first in the Senses . V. And therefore assert , that God cannot be known but by sensible things . If we go further and tell these Men , That God doth not fall under any of our Senses , and therefore cannot be conceiv'd of under any sensible Form ; yet by reason of their Inveterate Custom of false Judging , they rather chuse to frame several Distinctions , than to forsake their beloved Maxim , tho' only supported by Childish Prejudices ; saying , That God is made manifest unto us by his Effects , or by some Signs , as by his Creatures and Words that signifie his Nature unto us . Which Prejudices do really divert the Mind from the knowledge of Things , and hinder it from ever attaining the true way of Philosophizing . For how can we think ever to attain it , if we always Judge after the manner of Children , and only believe those Things to be true , which through the Senses are conveigh'd to us ? How can we ever think to make a right use of our Reason , if we only take those things to be good which are of Profit to us ? If we think the Air , Cold and Heat to be nothing , when they do not sensibly affect us ? Or , if we judge the World to end where our Sight is bounded , and innumerable other Things , which the Love of Antiquity , or the Authority of some Men have induced us to maintain . Booke 1. Part 1 Chap 2 Rule ● . G. Freman Inv. I. Kip Sculp To the Worshipfull John Emmerton of the Middle Temple London Esq . This Plate is humbly Dedicated by Richard Blome ▪ Book . 1. Part 1. Chap ▪ ● in the Introduction ▪ G. Freman Inv. I. Kip Sculp . To the Right Honourable William Legge Baron of Dartmouth &c.w. son of the Right Honourable George Lord Dartmouth , Master Generall of the Ordnance , Master of the Horse , Admirall of his Majestys fleet of ships , and one of the Lords of his Majestys most Honourable Privy Councell &c.w. This Plate is humbly Dedicated by Richard Blome VI. Education and Custom lead us into Error . Now all these Prejudices are much increased , by those Words which are in common use , and which the illiterate Multitude hath imposed ; as having more reference to the Use of the Body , than to the Contemplation of Things . Moreover Education , Custom , and Converse with other Men , the Authority of those we reverence , the Consent of Mankind , and many other such like , hinder us from scanning of Things purely and sincerely , and lead us into many Errors . What hath once been prov'd to us , or believed by us , we scarcely ever reject , insomuch that the Vices and Affections of our Will , do communicate their contagion to our Mind and Understanding . VII . Hard and difficult things are apt to please us more than things easie and obvious . Sometimes it happens on the contrary , that those Things which are clear and perspicuous of themselves , are suspected by us ; because Things obscure and liable to dispute do more affect us . Thus we are apt to contemn Experiments , as being too despicable , and our Mind desirous to take a higher flight , and hating to be confin'd to the narrow bounds of an Experiment , chooseth rather to please it self with some General Notions , which for the most part are of no use at all ; and so prefer swelling Words of Vanity , which fill the Fancy , before things real and solid . Hence it is , that the High-flown Expressions of the Platonists and Chymists do allure so many . Besides , we are apt to suffer our selves to be deceived by the respect we have for Antiquity as well as by our affectation of Novelty , as if a thing were therefore true , because it is either New or Old , as if True things had not always been so , as if in this old Age of the World we might not expect the discovery of many Things heretofore unknown , or as if we might not look for a riper Judgment , and more knowledge from Old Men , that daily Experience many things , than from others . VIII . We must first examin our Opinions , before we lend an assent to them . We are therefore to examine our Opinions by the Standard of Reason , before we give our assent to them ; and must judge those things to be True , not which the Authority of the Ancients , or the Judgment of most Men doth approve , but which are evidenc'd to be so by the strength of Reason . For the obtaining of which the following Rules will be helpful to us , if we seriously mind them , and judge of Things propos'd to us , according to their direction . CHAP. II. Some Rules for the Attainment of Truth . The First Rule . We are to admit of nothing that involves any thing of Doubtfulness . I. Doubts hinder us from the attaining of Truth . THe Light of Nature assures us , that Doubting is an obstacle to Science ; and that we can never attain it , as long as the thing we apprehend is not clearly and distinctly represented to our Mind . Wherefore we shall do well to esteem all Doubtful Matters , as if they were false , and despise them as hurtful Images , that are apt to lead us into Error . For seeing that all Things that are built on any Principle , derive all their Certainty from the same ; if that Principle be weak and tottering , the superstructure must partake of the same Conditions . II. Yet must not this be too scrupulously observ'd in matters of daily business . But tho' this Rule be of use for the clear knowing of Things , yet must we not extend the same to Human Prudence , or the use of Common Life . For it often happens , that we are forced to embrace what is least suspected ; and to esteem that as Good , which doth least hurt another . Thus the Laws wink at the Toleration of Whores , to prevent the greater Evils of Rapes and Adultery . Thus in Human Actions we are forc'd to choose that which seems probable , and to leave that which is more true . But in the Search of Truth , whatsoever hath the least Doubt in it , is to be rejected , and is no more to be regarded than if it were a thing feigned at pleasure . For whatsoever doth not conduce to the attaining of Truth , must be look'd upon as a straying from it . III. The rejejecting of things Doubtful , is a help to the attainment of Science . Wherefore he that would Philosophize in good earnest , must rid himself of all the Prejudices of his Infancy , forasmuch as they have crept into our Minds , without any foregoing Examination of Reason ; and therefore are to be consider'd by us , as false , rather than doubtful . Hence it is that our Philosopher saith , I have now for some years consider'd how many false things from my first Childhood , I have taken up for True ; and how uncertain and doubtful all those things are I have built upon them ; and therefore that it were best once in my life to overthrow them all ; and to begin again from the first Foundations , if ever I would desire to establish any thing in Sciences that might be firm and lasting . IV. There is no danger in this Doubting of things . Neither need we to fear , lest by taking all things for false , we should be in danger of being deceived ; because this Doubting is only indulg'd for to attain to greater certainty , and that we may the more evidently distinguish Falshood from Truth . For whatsoever includes the least Doubt , destroys Science , as hath been said , and leads to Error as well as Falshood it self . Is it not lawful for the Philosophers to suppose many Things , that by this means they may find out what is most certain and easiest to be known ? Thus the Astronomers imagin an Aequator , a Zodiack , and other Circles in the Heavens , that by the help thereof they may the more accurately describe the Sun's Course . Geometricians also make use of the like Suppositions , when with new Points they measure Lines , and to the Figures given add other Lines . Wherefore it will be of advantage to those who search after Truth , to reject all things that occur to them , and to give their assent to those things only , which they understand to be Certain and Evident . V. The way of Doubting approved by Aristotle . This way of Proceeding in the attainment of Sciences is not peculiar to Descartes , for Aristotle himself hath followed the same , as may be seen in the First Chapter of his Third Book of Metaphysicks , which bears this Title ; Of the Usefulness of Doubting , and what things we ought first to doubt of : Where he speaks thus ; In order to our attaining the Science we desire , it is in the first place needful to take a view of those things we are first to doubt of ; now such are all those things about which Men are divided in their Opinions , with other things besides . It being an Industry well worthy the pains of those who desire Knowledge , to Doubt aright . Wherefore we need not think strange , that our Philosopher begins his Philosophy with Dubitation , and requires us to reject all those Opinions wherein we meet with the least cause of Doubting , that by this means we may at last find out a true and unshaken Principle . The Second Rule of Truth . We are not to rely too much on our Senses . I. The Senses are subject to mistake on several accounts : As , Forasmuch as our Senses are deceivable , and we are frequently imposed on by them ▪ Common Reason will tell us , that we must not overmuch trust to them , but rather suspect whatsoever they offer to us ; for it is a sign of Rashness and Imprudence , to trust them that have once deceived us . Now how apt our Senses are to deceive us , daily Experience teacheth . For it happens often , and for divers Reasons , that things appear otherwise to our Senses than they are indeed . First , By reason of their Distance , as when the Object is so far from us , that all the Reflex Rays proceeding from it , cannot whole and entire reach us : As for Example , The Sun , and a Square Tower at a distance seem less , and otherwise figured than indeed they are . Secondly , By reason of the Medium , as when the Rays are variously refracted in the same : Thus a Stick and other Bodies seen through the Water , appear Crooked . Thirdly , By reason of the Surface , which as it appears to the Senses , doth not represent the Essential position of the Parts of the Body whose Surface it is : Thus the outside or superficies of a Bean , which falls under our Senses , represents a Figure very unlike that of a Plant ; whereas the Microscope discovers to us , That it hath the same Essential disposition of Parts with the whole Plant , whose Seed it is . So likewise the Spawn of Frogs appears to our Eye , to be an Unorganical Mass ; whereas the said Magnifying Glasses assure us , that they are distinguish'd into several Members . And the same may be proved by many more Instances . Neither is it to be doubted , but that there be many Bodies ; the Essential Constitution of whose Parts were never yet discovered to us by any of our Senses , which if they were , we should judge otherwise of them , than the Vulgar do . Fourthly , By reason of the Impression made upon our Senses , when the Vibration ( caus'd by the Object ) doth for some time continue ; As when the Sun appears to our Eye after it is shut ; or as when a Torch is with great swiftness turn'd round , whereby a fiery Circle is represented to the Eye , tho' the Torch be not in all the Points of the Circle . Or when the Impression proceeds from something else besides the Objects ; as in Dreams and strong Imaginations , &c. or when an Angel ( by moving the Organ of Sight ) doth represent himself to us . II. This Rule is not to be extended to the Actions of Life . Which deception doth not only frequently happen to our External Senses , but even our Internal Sense is not free from it . Thus we see , that those who are troubled with the Vertigo , think that all the Bodies about them turn round , and suppose the Air to be darkned : Thus likewise Drunken Men see all things double . Now when it is said , that we are not to trust the Testimony of our Senses , but are to look upon them as if they were false ; we are to observe that this Rule must not be transferr'd by us to the Actions of Life . For it is contrary to Reason , not to trust our Senses in the conduct of our Lives : For by this means we shall make our selves guilty of the Folly of those Scepticks , who out of a foolish distrust of their Senses were ready to expose themselves to eminent danger of their Lives , but that their Friends hindred them . Tho' indeed , when the Question is about the bare knowledge of Things , then it is on the other hand every whit as Irrational , not to reject whatsoever is in the least doubtful , because things that are so , are as opposite to the attaining of Science , as those which are altogether false or unknown . III. Our Senses having once deceived us , are to be look'd upon as always liable to deceive us . And tho' our Senses sometimes may represent to us Things as they are , yet must not this hinder us from suspecting their Evidence : For having once deceiv'd us , they may always deceive us ; or how can we rely upon them , which have once led us into Error ? And therefore Plato in his Phaedrus tells us , That Men who are desirous of Science , know , that Philosophy having once undertaken the Care of their Mind , does by little and little inform it , and loose it of its Bands ; representing to it , how deceiving the Judgment of the Eyes , Ears , and other Senses are , persuading it to leave them , as far as absolute Necessity does not oblige us to close with them , and to recall it self , and to recollect within it self , without giving credit to any thing besides it self . IV. Our Senses are of no use , for the discerning of the Objects of Sciences . For our Senses are not given us by Nature for the searching out of Truth , or to contemplate the Principles of Things : Because if we take an exact view of the Objects of Sciences , we shall find that most of those things that occur to our Mind , are not represented by any Bodily Figure : As for Example , All the Objects of Metaphysicks and Natural Divinity , which admit nothing of any Corporeal Form. For we have in our Mind an Idea of God himself , whose Authority we believe , and whose Dominion over all we firmly are persuaded of . For how could we demonstrate so many things concerning God , if his Idea were not inherent in us ? But do any of our Senses hand this Knowledge of God to us ? What Phantasm manifests to us the General Notions of Entity , Unity , Truth and Goodness ? What Species represents to us the Idea of Angels , or our own Soul , since there is nothing like them in the whole Universe of Material Beings , and with which they have not any thing in common , save only the Name of Substance ? Wherefore it is very absurd to go about to derive all Knowledge and Idea's from the Senses . And if from these we pass to Physical or Natural Beings , we shall find that not only the Beginning of them are hid from our Senses ; but that not so much as their Figures are represented to us , such as they are indeed , but very different from what our Souls upon enquiry find them to be . Do not we reach the Nature even of those thing that most strongly affect our Senses , as Light , Heat and Cold , far better by our Understanding than by Sense ? And are not many times the most sensible Objects the least perceptible to our Intellectual Sight ? V. To what end our Senses are given us . The Senses therefore are bestowed upon us by Nature to discover to us , who consist of Soul and Body , what things are good or hurtful for us ; and we pervert the order of Nature when we put them to another use , and apply them to the knowledge of Truth , which are only design'd for the Preservation of the Compound . Wherefore also this may be reckon'd amongst the chief Causes of Error , wherewith we are possest from our Childhood , that we are apt to judge of things , not as they are in themselves , but only as they gratifie or offend the Body . VI. Objection , That the Senses inform us of many things . If any one object , That we attain to the knowledge of many Things by our Senses ; that by our Feeling we perceive Bodies , as Stones , Wood and other things that come within the reach of our Hands ; by our Sight , things at a distance , as the Sun , Moon , Stars , Heaven , &c. and that without them we could never have any knowledge of these Objects . VII . The Senses do only accidentally discover things to us . To this I answer , that I do not wholly reject the Service of the Senses ; but only assert , that they are insufficient and inadequate for the knowledge of Truth . For tho' the Senses may inform us that Bodies exist ; yet cannot they discover to us what those Bodies are , or what their Nature and Essence is ; because this is not necessary for the Conservation of the Compound . And if ever they inform us what they are in themselves , this is only sometimes and by accident . For seeing that our Senses cannot perceive Corporeal things but through the intervening Medium , it is evident , that according as that is variously disposed , so their Judgment concerning them must vary accordingly . Thus we see that for this Reason the Stars appear to us of various Colours , sometimes more red , and sometimes paler , according as the Air that comes between our Sight and them is clearer or thicker . And therefore , as Lucretius saith , Lib. 4. we have great reason to suspect , that the Inferences we fetch from our fallible Senses , must be false and deceivable . VIII . How our Senses are said to be deceitful . But when we say , that our Senses are deceitful or subject to Mistake ; we must not so understand this , as if there were an Error in the Motion it self , or in the affecting of the Corporeal Organ , because that is done by a kind of Natural Necessity ; but because the Mind of Man , by reason of its intimate Union with the Body , doth from that Affection or Motion take occasion , to apprehend or judge of the thing amiss . And forasmuch as this precipitancy and inconsiderateness in Judging is commonly attributed to the Senses , and not to the Mind , the Senses are said to deceive us , because our Judgments follow those Perceptions that are attributed to our Senses . The Third Rule of Truth . Whatsoever we Perceive , we perceive with our Minds . I. Our Understanding is the searcher out of Truth . Forasmuch as Divine Revelation , or Human Tradition , have no admittance in Philosophy , and that according to the fore-going Rule , we are to suspect whatsoever comes from the Senses ; it remains that the Understanding alone must be the sole searcher out of Truth , whose property it is to investigate the Natures of Things , and so judge of them according to the Attributes that are found in them . II. Not only common or general Natures , but partilar also , are known by the Understanding . Neither is this only to be understood concerning Essences , or Abstract Natures , as the Metaphysicians call them ; but of every particular Object that strikes our Senses . For it is the Mind alone which sees , hears and feels through the Organs . For Gold , by Example , that is newly dug out of the Mine , doth at first sight look like Earth , and before Coagulation is more like Sand , than a Metal : But after it is once cast into the Furnace , it loseth the form of Earth , its parts run together and shine like a Star ; and what before lookt so much like Dirt , now delights and pleaseth all Men. So that my Senses at first perceived nothing of the Nature of Gold ; for whatsoever my Sight or Touch before discovered of it , is quite changed , the substance of Gold still remaining . III. 'T is by the Mind alone we know Objects . Wherefore , it is the Mind alone that knows the Nature of Gold , neither can we discern what it is , but by our Faculty of Judgment . We make no scruple to say , we see a Man , when we see one walking in the Market , tho' indeed we see nothing but his Cloaths , under which possibly a meer Machin might be conceal'd . It is plain therefore , that we do not make this Judgment by our outward Eyes , but by our Faculty of Judging , which is Internal . IV. It is by our Understanding alone we know that there are Pores in our Body . To explain this by another Example ; Our Skin appears to us to be a continuous Body , without any Holes in it that our Eyes can perceive ; but yet our Mind , by the Transpiring Sweat , concludes there must be Pores in it , by this way of Reasoning : The Moisture that is sent forth through my Skin , is a Body ; now a Body cannot pass from one place to another without passing through a Medium ; wherefore it must follow that my Skin is like a Sieve or Strainer ; that is , of such a Texture , as to be full of little Holes , through which the Moisture may pass . V. Many things cannot be discovered to us by our Senses . This Rule is so certain , that whosoever denies it will never be able to attain any thing distinctly or by Reflex knowledge , which is necessary to Science . And though some relying upon Aristotle , suppose all our Idea's to arise from our Senses , and that there is nothing in our Understanding , which was not first entertain'd in our Senses ; yet it is evident , that this Opinion , tho' common , is directly opposite to Divinity and true Philosophy . For first , there is nothing we perceive so distinctly as our Thoughts , neither is there any Proposition that shews it self to our Mind with fuller Evidence than this , I think therefore I am ; and yet neither of these Idea's of Cogitation , or Being , were ever discover'd to us by any Sense : Not by our Sight or Hearing , as being without Colour or Sound ; nor by any other of the Senses , because they have no Sensible qualities , or if they think they have , let them declare them . But if they cannot satisfie us herein , what remains but for them to own our Assertion , That the Notions of Thinking and Being do not depend on the Senses , but that our Mind forms them by its own proper virtue or efficacy ; tho' we do not deny but the Mind may be sometime excited to the forming of them by outward things that affect our Senses . VI. GOD cannot be represented by any outward Appearance . Who can believe that the Idea of GOD , which is in us , doth proceed from our Senses ? Or shall we think so , because some Ignorant persons conceive him under the form of a Venerable Old Man , as Gassendus tells us . But this is to confound and deprave Idea's , when we go about to imagin Spiritual things under a Bodily form : And he is in as great a Mistake , who would imagin Immaterial Substances as he is , who would hear Colours and see Sounds . It is apparently false therefore , that the Notions which we have of Spiritual things do proceed from the Senses ; nay , what is more , it is certain that no Representations of Material things come to our Mind , save only occasionally ; that is , forasmuch as the Motions made in our Brains ( for nothing but Motions can affect our Senses ) do give the Soul occasion of forming several Notions , which without them it would not do . Which Notions are also wholly distinct from those Motions and Representations , which are in the Brain or Senses . For they who are Blind and Deaf , tho' they receive no Species or Sounds from the Objects , yet are not without the Idea's of Cogitations , especially when they reflect upon the things they are thinking of . VII . How the Idea of Immaterial things are said to be inbern in us . Wherefore seeing we can perceive nothing by our Sense or Imagination but what is Material , it follows that the Idea's of all other things that are not Material , are inborn with us ; for by what other means could they be convey'd to our Minds ? Yet when I assert that these Notions were put into the Mind in its first beginning , I would not be so understood , as if they did actually exist there , and were continually obvious to our Thoughts ; but only that God hath vouchsafed a Faculty to our Mind , of exciting and producing such Notions ; as shall be more largely treated in the Ninth Part , concerning the Mind of Man. The Fourth Rule of Truth . That is True which we know clearly and distinctly . I. Cogitation is the Rule of Truth . Wherefore there can be no more certain Rule of Truth than our Cogitation , so that the same be but distinct and clear , and without the least Doubtfulness ; because it is impossible for us to mistake , as long as the Judgments we frame of any thing do correspond to our Perceptions . It being an undoubted Axiom with us , That our Knowing of a thing is a sure Argument of its Essence . Not as if because we perceive the Essence of any thing , that from thence we should presently conclude that it exists : But because it is impossible that any thing which is clearly known by us , should not be such as it is known by us ; that is , the thing must exist , if its Existence be perceived by us , or must be of this or the other Nature , if its Nature be represented to our Mind . II. From this Principle the Existence of GOD is proved . From this Principle Descartes evidently demonstrates the Existence of GOD. For if upon the account only ( saith he ) that I have such an Idea in my Mind , it doth follow that whatsoever I perceive clearly and distinctly to belong to it , doth really do so ; may I not from hence fetch an Argument for the Existence of God ? Yes surely : For the Idea of GOD , represents a Being absolutely Perfect : Now it is every whit as repugnant to a Being absolutely Perfect , to want any Perfection , as for Example , Existence , as it is for a Triangle not to have three Angles equal to two right ones . III. Provided it be clear and distinct . I said in the Beginning , provided our Cogitation be clear and distinct ; because no Certainty can be expected from a thing , whose Knowledge involves the least degree of Obscurity or Confusion . And therefore Plato in his Timaeus tells us , That when we discourse of a firm , stable , and intelligible thing , our Reasons also must be stable , immutable , and insuperable . For seeing that clear and distinct Knowledge is something which we our selves are not the Authors of , it must follow that GOD is the Author of the Connexion there is between clear and distinct Knowledge , and the assent which the Will infallibly yields to it . So that it is absolutely impossible , that what I thus apprehend to be true , should be false : As for Example , When I perceive Two and Four to be Six ; that in a Triangle there be three Angles equal to two Right ones ; and the like . It is impossible these should be false ; not because they are so conceived by me , but because except they were true , I could never have clearly or distinctly perceiv'd them . IV. It is impossible that what we clearly and distinctly perceive should be false . For if any thing thus apprehended by me could be false , this would destroy all Human Knowledge ; neither could any of us be sure of any Truth , no not of the Existence of God , nor of any of those things which are related to us in Holy Writ : Since it might still be objected to us , that those very things may be false which we most clearly and distinctly perceive . V. Knowledge arising from the Senses is Doubtful . But we cannot attain the same certainty of Knowledge in those things which are only perceived by the Senses , forasmuch as they are liable to Mistake : As when a Man , whose Eyes are deprav'd by a suffusion of Gall , takes all things he sees to be Yellow ; and perceives the same as clearly , as those who see the true Colour of every thing . VI. The certainty of our Perception depends on the Understanding . It remains therefore , that all the Certainty we have , is only of those things which we apprehend with our Understanding . Neither doth it destroy this Rule , that some tell us they have sometimes been deceived even in those things which they thought to be most true , and which they were con●●dent they had clearly perceived . For this happens to them , because they derive the clearness of their Cogitation , not from their Mind , but from their Senses , or from some preconceived Opinion : For we can never doubt of those things which we clearly and distinctly know . As will be evident to those who by frequent Meditation , and earnest Study , have acquir'd a habit of Judging between a clear and dark Conception . VII . The foresaid Rule is not to be extended to Believers . We are also to take Notice , that when we assert that to be true which is evidently and distinctly known by us ; and therefore that we are not to give our Assent to things that are not so known by us , this is not to be understood of Matters of Faith ; forasmuch as they are not accompanied with any such Evidence , neither have we any clear Notions of them , as we have of the Subjects of Natural Sciences . For there is a vast difference betwixt the Mysteries of Faith and Natural things , because in these Evidence , but in the former Authority commands our Assent . That a Man may be a Believer , he must believe without Evidence ; but to be a Philosopher , he must have a clear and distinct Perception . VIII . How a man may be certain that he clearly knows a thing . If any Man demand , How he may be sure of his knowing a thing clearly and distinctly ? I answer ; If he follow the Order prescribed by right Reason ; if he do not precipitate his Judgment , before he be enlighted with the Truth of Evident Perception . So that the Judgment of our Understanding must always go before , as it does when we never assert or deny any thing , except it be of Things we have clearly and distinctly perceived ; that is , when our Judgment is exactly conform to our Perception . For it is not a sufficient Argument for us to embrace any Opinion , because there is Truth in it , except the same do appear to us ; so as that our Perception may be the Rule and Line of Truth to us . A Transition , containing the substance of what hereafter follows , concerning the clear and distinct Perception of Things . IX . The Order or Series of things to be handled in the first Part of Logick . Forasmuch as it hath been made out , that the clear and distinct Perception of the Mind , is the one and only Rule for the attaining of Truth ; it remains now that I shew , how the Mind may arrive to the same : Which that I may the more easily accomplish , the following Points are heedfully to be minded . First , What Cogitation it self , or Perception is , and what be the Modes of it . Secondly , What be the Objects of our Perceptions , whether Universal or Singular . Thirdly , How our Mind may arrive to the knowledge or Perception of Things , with respect had to the Things that are to be known ; such as are the Common Attributes , Causes , Effects , Subjects , Adjuncts , &c. Fourthly , Whence the clearness and distinction of Idea's do depend , as likewise the Agreement and Disagreement of Things . CHAP. III. Concerning the various Modes of Perception ; viz. Pure Intellection , Imagination and Sense . I. We must never give our Judgment of a thing unknown . FOrasmuch as Natural Instinct teacheth us never to judge of a Thing unknown ; and since nothing is known to us but what our Mind clearly perceives , we will first treat of the Nature of Cogitation , before we examine that of Simple Notions , to the end we may be able to discern what things are confusedly , and what distinctly apprehended by us . II. What is to be understood by Perception . By COGITATION in General , I understand all those things which we experience in our Selves , and whereof we are Conscious : Which Description comprehends all the operations of our Understanding , Will , Imagination and Senses ; for to Understand , to Will , and to Imagine , is nothing else but to represent to our selves the thing whereof we have an Idea . And accordingly from these various ways of Perceiving , is deduc'd that first Truth , which we meet with in an orderly way of Philosophizing : For because I Think , that is , because I Perceive , Imagine and Feel , it necessarily follows that I exist : And therefore that Proposition , I Think , therefore I am , is of undoubted Truth ; since it is impossible that I should Think , and yet be Nothing . And so in like manner when I say , I walk , I write . Not as if Walking or Writing , which are perform'd by the Organs of the outward Senses , did infer my Existence , because I may think I perform them in a Dream ; but only because the Consciousness which is in my Mind , of my Walking and Writing , could not be there without I did exist . III. Our own Existence is before any other Truth . I have said , that this Proposition , I Think , therefore I am , is the first Truth we meet with in our orderly Philosophizing ; because the Existence of our own Soul , which we gather from our Cogitation , is more known to us than the Existence of any other Beings . For the Thinking Mind , which is understood by this word , I , doth know it self before it knows any thing else ; and the word , am , which imports the first Person , is before the word , is , which is only applied to the Third Person . For who is there who doth not first Think of himself as of a particular Being , before he doth of Man in general ? It is natural to our Mind to think of a singular Being , which is proposed to our Sense or Understanding , before we think of a Being taken in general ; and therefore this Proposition may well be esteem'd by us as a first Principle , since from this proof of our own Existence , we confirm the Existence of God , of Material things , and in a word , of all Creatures whatsoever . IV. It is impossible for the same thing to be , and not to be , is not the first Principle . I am not ignorant , that this is commonly taken to be the first Principle , It is impossible for the same thing to be , and not to be . But I see not how this Proposition can be of any use to us , in order to the attaining of Knowledge , since it doth not prove the Existence of any thing , and doth seem to suppose that something is , which ought to have been prov'd before . For it presupposeth its Division into Ens and Non Ens , or Being and Not Being ; whence that Maxim is derived , Every thing either is , or is not . But our Principle , I who think do exist , presupposeth nothing at all ; and when all other things are liable to be question'd and doubted of , yet it is absolutely impossible , that I who think shonld not be something ; that is , that I should not exist . V. Three Species or kinds of Perception . There be Three Species of Cogitation ; Pure Intellection , Imagination and Sense : For by these Three Modes or Ways the Mind of Man perceives or thinks . VI. Pure Intellect . The Mind is said to Understand purely , when by her self alone , and by turning into her self , she perceives a thing only by attending to the Idea she hath of it ; or when she perceives a thing , whereof there is no Footstep in the Brain . And in this manner the Soul apprehends things Spiritual and Universal , Common Notions , the Idea of Perfection , and finally , all her own Thoughts : Or likewise when it understands Material things , Extension with its Affections : For it is with the Vnderstanding alone , that a Perfect Circle , a Thousand Corner'd Figure , &c. can be conceived . VII . Imagination . The Mind is said to Imagin , when it applies its Knowing faculty to the Body , as intimately present with it ; or when it applies it self not to the Thing it self , which is present to the outward Sense , but to the Phantasm impress'd by it in the Brain : As when it perceives a Figure , a Circle , a Triangle , the Stars , a Machin , &c. And these Perceptions are called Imaginations , because the Mind by representing these Things to her self , doth-form Images in the Brain ; and forasmuch as it cannot frame any Images of Spiritual things , it follows that neither can they be imagined . VIII . Sense . Lastly , The Mind of Man , by Sense , only perceives sensible Objects and things that are more obvious , as being present , and affecting the outward Organs . Thus it perceives Steeples , Fields , Animals , &c. and these Perceptions are called Sensations . 'T is by these Three ways only that the Mind of Man perceives things : For whatsoever is represented to it is either Spiritual or Material ; if Spiritual , it can be apprehended by the Understanding only ; if Material , then it is present or absent : If absent , the Soul represents it to it self by the Imagination ; if present , it perceives it by Impressions made on the Senses . So that there are only Three ways by which the Soul apprehends any thing , viz. by Pure Intellect , Imagination , or Sense . IX . The Object of the Understanding is more common or general , than the Object of Imagination . Hence it is manifest , that the Object of the Understanding is of a larger extent , than the Object of Imagination : For by our Understanding we do not only conceive the Nature of Spirits and of a Body in general ; but also the Proprieties of particular Bodies , which cannot be discovered by the Senses , nor by the Imagination neither , being only perceivable by the Intellect . Thus , tho' the Understanding perceives that the Diagonal Line of a Square , is to that degree incommensurable with the side of it , that tho' a Division into infinite parts should be supposed , yet we could never come to a Particle that might be the common Measure of them both : Nevertheless this Truth can never be reached by the Imagination , but rather seems repugnant to it : Because we can imagin nothing but some particular determinate Body , the Species whereof is imprest on our Brain , as hath been said . X. No Corporeal Species are required to Pure Intellection And tho' the Mind doth sometimes contemplate Material and Corporeal things ; yet it doth never admit any Corporeal Species , which are only received into the Brain , on which the Mind doth not depend in its Operations . For in order to Pure Intellection , we have no need of the Brain , but only for Sensation or Imagination . Whence it follows , that we can Understand many things which we cannot Imagin . I perceive by the Light of Nature that GOD exists , tho' I cannot represent him to my self by any Image . So likewise I have a clear perception of a Chiliogon or Thousand Corner'd Body ; which yet I cannot imagin , that is , presentially behold its Thousand Sides ; because the vast number of them confounds the Imagination . Now that I have a clear Perception of a Thousand Corner'd Body appears , because I can demonstrate many things concerning it , as that all its Angles together are equal to 1996 right Angles ; which could not be , if I had only a confus'd Conception of it . XI . Truth or Falshood is not in the Understanding . It is to be noted , that no Error can be in the Understanding or Imagination , as long as they continue purely in the Contemplation of things : For if the Idea we have of those things it represents be conform with them , it is true ; and if it disagree , then is it no representation of them . Moreover , since Falshood or Error consists in our attributing to a Subject what doth not belong to it , or denying of it what doth , it is plain that since the Understanding or Imagination do neither affirm nor deny , there can be no Falshood in them . Neither doth it contradict this , that the Understanding sometimes apprehends a False thing , as when it conceives a Non Entity , or Repugnant terms ; as when the Mind conceives one that is no Physician , to be a Physician ; in which Conception there can be no Falshood , because it truly conceives a Physician , tho' it apply that Conception to a wrong Subject . XII . But only in the Will. Wherefore all danger of Mistake is from our Will , when we give our Assent or Dissent to any thing we have not clearly perceived . Yet is not this to be understood , as if we did wilfully embrace Error ; but because we do not restrain our Will sufficiently , but reach it forth to those things we do not perfectly understand . For it is another thing to be willing to be deceived , and to assent to those things in which Falshood is involved . And tho' few be so careless of themselves , as to desire to fall into Error , yet many are willing to give their Assent to those things in which Error is hid . For all Assent belongs to the Will , and is to be numbred amongst its Perceptions . For we see it is in our Power , tho' we perceive a thing , yet to suspend our Judgment , which restraint is the Determination of the Will ; as likewise are Desire , Aversion , Dubitation , &c. For to the Understanding only belong Pure Intellection , Imagination , and Sensation . XIII . Sometimes the Understanding is the cause of Error . Since therefore FALSHOOD consists in the hasty Consent of the Will , it can by no means be imputed to the Intellect , because Error is not to be found in Perceptions , neither is it any way intelligible . Yet forasmuch as the Understanding commonly hath imperfect and confused Conceptions of things , it may be said to be an occasional Cause of our Errors . For as our Bodily Sight frequently leads us into Mistake , by representing Objects confusedly and imperfectly to us ; so the Understanding having for the most part only a confused Perception of things , is a cause of the Wills falling into many Errors , by assenting to those things which are obscurely perceived by the Understanding . CHAP. IV. Of the Five Vniversals , or Predicables . I. There is a twofold Genus of Beings or Entities . WE are to suppose in the first Place , that there are Beings that have some reality in the Nature of things ; and whose Attributes belong to them , whether the Understanding think so or not . Such are all Substances , and all Attributes or Modes , which denominate or vary them . Others again derive all the Being they have from the Intellect , on the operation whereof they so depend , as to vanish away upon its Cessation ; as are all those which are called Entia Rationis ( Entities of Reason ) in the Schools . II. Universals are only Modes of Thinking . In the Second place we are to suppose , that nothing else is to be understood by the word Universal , than that which agrees or is attributable to many things ; as the word Substance , which agrees to Body and Spirit . Wherefore all Universals are in our Understanding , and to speak properly , are only Modes of Thinking . For seeing all Natural things are Singular and distinct from each other , these Universals can have no Unity , but what our Understanding gives them . By Example , Two Lines if separately consider'd , cannot be said to agree in the Notion of a Line ; because in the Conception of the one , is included the Negation of the other ; wherefore to the end they may agree , we must first frame an Idea , which may serve us for the conceiving of all Lines that are like one another . Thus we put some Common Name upon all those things which are represented by an Idea , which Name is commonly called an Universal . And thus that famous Number of Universals , which hath rack'd so many Brains , may easily be salved . Booke 1. Part 1. Chap 2 Rule ● G. Freman Inv. I. Kip Sculp To the Right Worshipfull S. r Thomas Mompesson of Bathampton in Wilt-shire Knight This Plate is humbly Dedicated by Rich : Blome IV. An Universal as considered as a Whole , or as a Part. Whence it follows , that one and the same Universal , with respect to the self-same Inferiour , may be considered either as a Part ; or a Whole : For both the Genus in respect of the Species , and the Species in respect of the Individuals , is called a WHOLE : Thus Animal contains a Man and Beast . Universals also may be look'd upon as Parts of their Inferiours ; so a Man is conceived as consisting of his Genus and Difference , that is , of an Animal and Rationality . V. The Original of Difference and Proprium . Neither hath the Universal , called Difference , any other Original ; for when we consider that there is some difference between those things which we understand to be under the same Genus , or Species ; we apprehend this variety under some common Notion , which we afterwards attribute to every Difference : As Streightness or Rectitude , whereby a Line is distinguish'd from one that is of another Figure . Roundess , whereby a Globe is distinguish'd from an Angular Body , &c. The Predicable Proprium is made , when we abstract one Notion from those that are peculiar to Things , and to which alone it agrees , and to no other : As Partition or Divisibility , and Mobility to a Body . 〈…〉 called Accident is framed . Accident is framed by us , when after we have considered that many things may happen to , or be taken from Things , without the destruction of their Nature , we conceive the Idea of an Entity separable from them , which we call Accident : Which Name we make use of for the conceiving of all those things , which fortuitously happen to Things . And this is sufficient for the Explication of the Nature of Universals , especially to those who do not love to spend their time in vain Questions , or to confound the Notions of Things with fruitless Disputations . VII . The Partition of an Universal into five Species is a compleat Division . Now that this Division of an Universal , is Adaequate ; that is , that there are neither more nor less Members of them than these Five , appears thus : The Idea which we frame in our Mind , and make use of to conceive many Things , either represents many Things distinguish'd by Species , and then it is Genus ; or only Numerically distinct , and then it is Species ; or it represents the Diversity , whereby many Singulars differ amongst themselves , and from other things , and then it is Difference ; or the Property which belongs to them alone , and then it is Proprium ; or some Contingency separable from their Essence , and this makes Accident , or the first and last Predicable . VIII . What Predicables are . These Five Universals are otherwise called Praedicabilia , Predicables , because they are Modes of conceiving Universal Notions , which are affirmed of many things Truly , Properly , Naturally and Immediately . They are said to be Modes of Conceiving , to intimate to us , that Predicables are Second Notions . For Genus is nothing in it self , but only with respect to those things with which it is compared ; neither is there any Species , but with respect to the Genus to which it is subjected : neither can Difference , Property or Accident be conceived , but with relation to the Subjects they belong to . CHAP. V. Vniversals singly examin'd , as to their Nature , Properties , and Vse . I. It is of use to take a review of these Universals . THough I have in the foregoing Chapter sufficiently made out , that there are Five Universals or Predicables , and that they are distinguish'd from each other by their Differences ; yet I suppose it may be of use to give a more particular Explication of them , and set down how they are predicated of their Inferiours . II. Genus takes the first place amongst Universals . GENUS deserves the first place amongst Universals , both in order and dignity ; for from it , as from their Head , the other Members depend and are maintain'd , and upon its ceasing perish and vanish . Genus therefore is an Universal , which is predicated of many things distinct by Species , in the Question what it is . As Substance is a Genus in respect of Substance extended , called a Body , and Substance Thinking , which is called a Mind or Spirit ; and a Quadrilateral or Square Figure , is the Genus with respect to a Parallelogram and a Trapezium . To be predicated in the Question What , is when enquiry is made into the Nature of any thing , what it is . Thus when I enqnire what a Body , or what a Mind is , the Answer is properly made by their Genus , viz. Substance ; and herein it differs from Difference , Property , and Accident : For tho' Difference be predicated by What , or Essentially , of those things whose Difference it is ; yet it is not simply predicated so , but with the addition of Quale , which denotes the Form or Quality of a thing ; and Property and Accidents are only predicated in Quale . III. What it is to be distinguish'd by Species , in the definition of Genus Wherefore in the foregoing Definition of Genus , to be distinguish'd by Species , is to differ Essentially , so as that some Essential part is found in the one and not in the other . Thus Man and Beast are said to be distinct by Species ▪ because a Mind or Rational Soul is found in Man , which is not to be met with in a Beast . IV. Genus is twofold , one supream or the highest . Genus is twofold : One , the most General or Highest , which hath no Genus above it : As a Corporeal Being amongst extended Substances ; and an Intellectual or Thinking Being , amongst those that are endow'd with Knowledge and Understanding . V. The other , Subaltern . The other Genus is called Subaltern , which intervenes betwixt the highest Genus and the lowest Species ; or which with respect to the things above it is a Species , and with respect to the Inferiour is call'd Genus . Thus Living Thing , if it be referr'd to Body , under which it is sorted , is called a Species ; but if to Animal , it is a Genus . And consequently , Body is a remote Genus of Animal , but Living Thing the nearest Genus . VI. What Species is , and how i● is divided . The Second Universal is SPECIES , which is predicated of many , only Numerically distinct in the Question , what a thing is . By the last part of this Definition of Species we find it agrees with Genus , in that they both of them answer to the Question , what a Thing is : As when I ask , What is Peter ? I answer aright by saying , that he is a Man. VII . The Division of Species . Species is twofold : The one called the Lowest or most Special ; the other , Middlemost or Intervening : The latter of which , tho' with respect to the Genus under which it stands , it be called Species ; yet with respect to the Inferiours , of which it is predicated , it is a Genus ▪ So Animal which is the Species of Living Thing , is the Genus in respect of Man or Beast . VIII . What the m●st Special , or Lowest Species is . The most Special , or the Lowest Species , is that which is immediately predicated of Individuals : As Man of Charles and James ; a Circle of all particular Circles : Which is therefore call'd the most Special or Lowest Species , because it hath no Species under it , but only Individuals . Wherefore also it is commonly defined , that which is predicated of Many , differing only Numerically in the Question which asks , What a thing is ? IX . How many ways Difference is to be understood . The Third Universal is DIFFERENCE , which may be variously considered : First , forasmuch as it is the Constituent of Species ; and then it may be defined to be that whereby the Species doth exceed , or is more worthy than the Genus : As Man exceeds an Animal or Sensitive Creature by Rationality . Secondly , As it is something Predicable , and so it is commonly defined to be an Universal , which is predicated of many different in Specie , in the Question , Quale quid , or of what kind of Essence a thing is . And this Definition agrees only to the intermediate Difference . Thirdly , Inasmuch as it divides the Genus into differing Species ; thus Rational and Irrational divide Animal , and constitute two Species , viz. Man and Beast . So the Equality of the Sides constitutes an Equilateral Triangle , and determines the Idea of a Triangle , which before was common to a certain Species . Fourthly , As it is an Essential part of the whole Compound , and so it makes a part of its Essence , and belongs to its Definition : Wherein it differs from a Property and Accident , as being an Actual part of the things to which it is attributed . X. The Species includes more than the Genus . For in every Species there must necessarily be something more than there is in the Genus ; for otherwise there would be no distinction at all between the several Species , seeing they all agree in the Genus ; and therefore if there be any diversity betwixt them , the same is to be fetch'd from the Difference . For Example ; The Body and Mind are two Species of Substance , and therefore it is necessary that in the Idea of Body there should be somewhat more found than in the Idea of Substance ; and the same must be said of the Idea of the Mind . Now whereas the first thing we meet with in a Body , is Extension ; and in the Mind or Soul , Cogitation ; we may say , that Extension is the Difference of Bodies , and Cogitation the Difference of the Soul : Or in other words , That a Body is a Substance extended , and the Soul or Mind a Thinking Substance . Wherefore Difference , as it is the Third Predicable , may be thus defined : That which is predicated of the Species , and of the things contained under it by the Question , Quale quid , or of what kind of Essence the thing is . XI . The fourfold division of Property . PROPRIUM is taken in a Fourfold Sense or Acception : First , That which agrees alone to the Species , but not to all the Species ; that is , to all the Individuals resorting under it . As , to Cure by Art , is attributable to Man alone , but not to all his Individuals . XII . The Second . Secondly , That which agrees to the whole Species , but not to it alone . As it agrees to Man to walk on two Feet ; for the same may be also said of other Animals yet not of all . So Divisibility is the Property of Extension , because every extended Being can be divided ; tho' Duration and Number be also divisible . XIII . The Third . Thirdly , That which is attributable only and to the whole Species , yet not always , but only at a certain time : As to grow ●grey-headed is peculiar to a Man ; not in his Childhood or Youth , but in his Old Age : For if it happens otherwise , it is look'd upon as a Prodigy . XIV . Proprium ▪ in the 4th Mode . Fourthly , That which is attributable only , and to the whole Species , and at all times : As it is the property only of a Circle , of every Circle , and at all times , that all the Lines drawn from the Circumference to the Center , are equal . And this last sort of Property is that which constitutes the Fourth Universal ; the other three Modes being rather referrable to Accidents , because they do not agree necessarily , nor always , nor to the whole Species , but contingently , sometimes and in part only . And thus Proprium in this last Sense may be defined , that which is predicated of many things by themselves , and necessarily , yet not essentially . I have added the word Necessarily , because Property doth so agree with a thing , that it cannot so much as by Thought be separated from it ; forasmuch as it is a necessary consequent of its Essence , and is convertible with it . Thus it is the essential Property of a Triangle , that two of its Sides taken together , are bigger than the third , and that its three Angles be equal to two right ones ; because these do necessarily agree to a Triangle , inasmuch as it is a Figure bounded by three right Lines . XV. What an Accident is , and how many ways it is taken . In the last place , we call all that Accident , which is not Substance , neither doth necessarily agree to it , but doth only contingently follow the same ; or is that which without the destruction of the Subject may be present or absent . As Roundness , Hardness , &c. are common Accidents with respect to a Body , as Sorrow and Fear are Accidents with regard to the Soul or Mind . An Accident is twofold ; Separable , which may easily be separated from the Subject in which it is conceived to be , as sleep , from Man ; or Inseparable , which cannot be separated from the thing in which it is by the force of Nature , as whiteness from a Swan , blackness from a Blackamore : Tho' they may be abstracted by Cogitation ; for we can conceive a Swan without whiteness , and a Man without blackness . Wherein , as hath been said , it is distinguish'd from a Propriety , which cannot so much as by Cogitation be removed from its Subject . XVI . The definition of Accident is true in a divided Sense , not in a Conjunct . When an Accident is said to be present or absent without the destruction of the Subject ; this is not to be understood in a Conjunct Sense , as if the same Accident could at the same time be present and absent from the same Subject : But in a Divided Sense , so as that the Accident which is now present may be absent , and on the contrary . For it is a Contradiction that two opposit Predicats , should at the same time be predicated of the same thing , though they may at divers times . XVII . The Series of Genus's and Species To the end that the Order of the Highest Genus , and those that are Subaltern , as also of the Species , may be the better known , it will be of use to subjoyn here a Series of Universals , by which we may be able to descend from the highest Genus , to wit , Substance , to Individuals ; and remount back again from the Individuals to the highest Genus . For by this Scheme the Mind is much enlightned , and avoids that Confusion , which otherwise is apt to arise in the Defining , Dividing , and Enumerating of things .   A Substance ,   Corporeal ,   Intellectual .   A Body ,   Living ,   Void of Life .   A Living Thing ,   Sensitive ,   Void of Sense .   An Animal , or Sensitive Creature ,   Endued with Mind ,   Void of Mind .   A Man ,   This , Another ,   Plato . XVII . Which Series may be made after an Analytical way . The Words which follow from Substance to Man , are called Intervening Genus's , and those on the Right and Left are the Differences , which are said to be placed in an Indirect Line . From those words which are disposed in a Direct Line , we make the Series in a twofold manner ; either by Analysis or Division descending , beginning from the Highest Genus , which is Substance , and distributing it , and all other the Genus's that resort under it , into their Species by their Difference , till we come to the Individuals . As if one should divide Substance into Corporeal and Intellectual ; and then a Body into Living and Void of Life ; and then a Living Body , into that which is Sensitive and devoid of Sense ; and a Sensitive Creature or Animal , into that which hath a Mind , and which is destitute of it ; and at last , an Animal endued with a Mind , viz. a Man into Plato , Socrates , Aristotle , &c. XVIII . Or by a Synthetical . The other is by way of Synthesis ascending , beginning from the Individuals , and from them mounting to the Subaltern Genus's , and lastly to the Highest Genus , viz. Substance . As when considering all particular Men , and finding them all to agree in the Nature of Man , we place Man as the Species above the Individuals . Then comparing Man with Animals or Sensitive Creatures , and finding in them the common Nature of Animals , we place Animal as the Genus above Man. Afterwards making a Comparison of an Animal with Plants , and finding them to agree in the common Attribute of Life or Living ; we put Living above Animal : And then if we compare Living things with those that are destitute of Life , we shall find the common Notion in them both ; and therefore place Body above Living . Lastly , If we compare Bodily things with Angels and the Mind of Man , we shall find the common Notion of Substance in them both ; and therefore will place Substance as the Genus above Body , by which means Substance will be left the Highest Genus . XIX . What an Individual is , and its division . A Singular or Individual is opposed to an Universal , because it cannot be common to many Inferiour ; as this Man , this Sword. It is twofold , either Indeterminate , which without difference may signifie this or the other Individual ; as a certain Man , a certain Woman : Or Signate and Determinate ; as Julius Caesar , which is called Determinate by its Signification ; or by Demonstration , as when a common Word is determined by a demonstrative Particle ; as this Colledge , this Court or Yard : Or by Circumlocution ; as the Son of Sophroniscus for Socrates , or the Son of the Blessed Virgin for Christ : And are therefore called by Aristotle , Individuals , Singulars , and Things differing in Number , because they cannot be divided as the foresaid Universals ; and because we in a manner point at them , as if we were counting of them one by one , when we say this , that , the other , &c. XX. The first Use of Universals . Hence it appears what is the Use of Universals , and how far they conduce to the Knowledge of Things : For seeing that a thing considered under an Universal Notion ▪ is a thing ; as it is apprehended common to many Inferiours , or as it is predicable of many ; we shall find that the consideration of Universals , is a great help to clear and distinct Perception , the obtaining of which is chiefly aimed at by all that is handled in this LOGICK . For by the help of these Universals , or Praedicables , we are enabled to discern the Attributes which constitute the Essence of a thing , from those which are Consequent to , and to know which are the Properties and Accidents of every thing : As for Example , it belongs to the Constitution of Socrates his Nature , that he be a Man , a Sensitive Creature , and Rational : Which Three in their Universality are distinguish'd ; Man being the Species , Sensitive Creature or Animal the Genus , and Rational the Difference . Which tho' in Socrates they are all one and the same , yet are distinguish'd according to our Mode of Thinking . But the Faculty of Laughing , or Laughter it self , is consider'd as a consequent of Socrates his Essence , who is already constituted a Man , by his being an Animal and Rational . And the Faculty of Laughing is the Property of Man , but the Act of Laughing an Accident . XXI . The second Use of Universals . The Consideration of Universals is also of great Use to the more clear Perception of Things , whether they be Singular or Common . Of Singulars , whilst we enquire under what Species they are placed , what Genus's they have , ascending by degrees to the Highest . Of Common or Universals , when we examine what Differences they have , and what Species they contain , descending in this manner to the very Individuals . Thus by ascending , I know Socrates to be a Man , a Man to be an Animal , an Animal to be a Substance : And again by descending , I learn that Substance is either Intellectual or Corporeal ; the Intellectual to be either Infinite , as God ; or Finite , and that either without a Body , viz. an Angel , or joyned to a Body , as Man's Soul ; under which Species the Mind of Socrates , as a Singular or Individual doth resort . XXII . Our Mind frames a general Idea two several ways , the one by joyning or aggregating . The Second thing which follows from the Consideration of Universals is , that there are two ways of framing General Idea's , the one by Aggregation , the other by Abstraction . The Mind forms an Universal Idea by Aggregation , when it joyns many Singular Idea's of a like Nature together into one complex Universal Idea , which is called Genus . Thus making a Congeries or Collection of all Brute Beasts , as of Lions , Horses , Bears , &c. we find them all to agree in the Idea of a Brute Beast , which we therefore call the Genus of them . XXIII . The other by Abstraction . Again , we may form an Universal Idea by Abstraction , when we attribute the Attributes which constitute the Essence of a thing into several ranks or degrees , as if they were so many Parts . For tho' the Idea's of Singular things do agree in some one thing , yet they differ in more ; wherefore when the Mind doth abstractedly and severally consider things , in which many like Idea's are found , neglecting those wherein they differ ; this abstract Consideration is called an Universal Idea or Genus . As for Example , If I take from John , Peter , James , all the Particularities that determine them , as that the one is a Physician , the other old , the third young , &c. and that I only confider them as being all endued with Sense and Reason : This affords me the General Idea of a Man , forasmuch as thereby not any particular Man is represented to me ; but Man in Common , or the Nature of Man as such . CHAP. VI. Of Substance , and its Affections or Modes . I. The difference of our Perceptions . THe difference of Perceptions or Idea's is taken either from the Things themselves which we understand , or from our different ways of Perceiving them , or lastly proceeds from the Words or Signs whereby we express our Notions . Now whatsoever is understood by'us , is either conceived as a Thing , or Substance , existing by it self ; or as the Attribute of a Thing , or Mode of Substance ; or as something made up of a Thing and Mode ; or a Modified thing ; or lastly , Propositions of Eternal Truth residing in our Mind . II. What Substance is . Substance is a thing , which does not need any other Substance for its existence ; that is , which hath an Essence really distinct and separable from others . By this means is a Substance distinguish'd from an Accident , which is not really distinct from a Substance , nor can exist separate from it : Nay , an Accident cannot be clearly and distinctly conceived without a Substance , because its very Essence is to be in another ; and nothing can be clearly and distinctly conceived without its Essence . III. Substance is known by its Attributes . Tho' it be sufficient for the Explication of the Notion of Substance , to say , that it is a thing which exists independently of another ; yet we cannot distinctly understand it , but by means of some Attributes that belong to it ; and the more of these are found in any Substance , the clearer it is said to be known . For the Attributes or Properties of Things are , as it were , certain Forms that actuate them , and distinguish them from others : For we more easily know a Rational Soul , by conceiving it as a Thinking Substance , than as a thing Existing ; because if it thinks , it must of necessity exist . So in like manner we have a clearer knowledge of a Body , by considering it as a Thing extended , than only as a thing existing , as is evident to him that considers it . IV. A Substance is either Created or Uncreated . SUBSTANCE is twofold , Created or Increated . Increated is a Substance independent of all other things whatsoever , as GOD : A Created Substance is that , which tho' it do not stand in need of another Substance for its Existence , yet wants the Divine Concourse , without which it cannot exist ; and therefore is not an absolute , but only a dependent Being . V. Created Substance is divided into Intellectual and Corporeal . Of Created Beings , some are Intellectual , others Corporeal . An Intellectual Being is a Thinking Substance , as the Mind of Man : A Corporeal , is a Substance extended in Length , Breadth and Depth ; or is the immediate Subject of Local Extension , and of all Modes that presuppose Extension , as Magnitude , Motion , Figure , Position , and all other such like , which cannot be conceived without Local Extension , as the foundation of them . And to the Mind or Soul belong all Acts or Modes of Cogitation , as to Understand , Imagin , Feel , and whatever else agrees in the universal Notion of Cogitation . VI. There be only two Genus's of Things . Whence follows that there are only two Genus's or General Heads of Things , viz. of Material and Intellectual , or Cogitative : All others being reducible to these as Modes or Affections ; now what these are , and how related to their Subjects ; we shall next proceed to explain . VII . What an Attribute or Modus is . There be many Attributes we may conceive in every thing ; some of which constitute the Nature and Essence of a thing , and distinguishes it from all others ; as Extension , which constitutes a Bodily Substance , and distinguishes it from a Cogitative Being : Others again presuppose the Nature constituted , and do only diversly affect or vary the same , as Volition doth the Mind , and Figure the Body ; and these are called the Modes of Substances . Because tho' they affect or vary the Substance , yet it may be conceived without them , tho' they themselves cannot be understood but as inherent in some Subject ; for herein properly the Nature of a Modus doth consist , that it cannot be conceived without including the Conception of the thing whose Mode it is . Thus I clearly perceive that a Body is an extended Substance , without Motion or Figure : But it is impossible for me to conceive Motion or Figure , except it be in an extended Being . So likewise I clearly perceive the Mind to be a Thinking Substance , without Imagination or Sense , because tho' these were absent it would be Cogitative notwithstanding : But Sense and Imagination cannot be conceived , but in a Cogitative Being . VIII . How Modes are distinguish'd from Aristotelical Accidents . Wherefore a Modern Philosopher calls a Mode , the Appendix of a Being ; because it cannot exist without the thing whose Appendix it is . Which we are to observe in opposition of those , who suppose that the Modes of things differ not at all from Real Accidents ; forasmuch as these , according to them , may be conceived separate from their Subjects , and can exist so by the Divine Power : Whereas Modes can neither be separated from their Subjects , nor conceived without them ; for otherwise they would be Substances , whose Nature it is to be Things subsisting . IX . What a Substance is . Substance therefore is a thing that subsists by it self , and is the Subject of all the Attributes that are conceived to be in it . X. Whas a Mode is . A Mode is that Attribute or Quality , which is conceived to be in the Substance it self , which determinates it to be such like . And this Mode is called by us an Imperfect Being , because it belongs to the Nature of it , that it cannot be by it self , and without some Substance in which it is ; and whose Being , as the Schools express it , is nothing else but Inbeing ; so that it is a contradiction for a Mode to be , and not to be or exist in a Substance . Wherefore neither can a Modus pass from the Substance , which is its Subject , and does support and uphold it , into another ; for this would argue it not to have been dependent on the Substance wherein it was before , which implies a Contradiction . XI . The division of Modes into Internal and External . Of Modes , some are Internal , others External : Internal are such as are conceived to be in the very Substances , as Figure , Motion , Rest , &c. External are such as depend on other Things , and are not in the Substances themselves , as to be Beloved , Desired , &c. which are Modes depending on the Action of another ; and the Expressions we make use of to signifie the said Modes , are called Extrinsecal Denominations ; because they only express the Modes under which things are conceived . XII . What a thing Modified is . A Theng modified is the Substance it self , which is determined by a Modus . XIII . These Three things explain'd by an Example . As when I consider a Body , the Idea I have of it represents to me a Body or Substance , because I apprehend it as a Self-subsisting thing , which needs no outward thing to its existence : But when I consider that Body Round or Square , the Idea which I have of its Roundness or Squareness represents nothing else to me , but a certain Mode of Existence , which I find cannot naturally exist without a Body , to which the Roundness or Squareness belongs : And lastly , when I joyn the Mode with the Thing , that Idea represents to me the Thing modified . XIV . Modes make no Compound of the thing whose Modes they are . From what hath been said , it follows , First , That the Modes of Things are no hindrance to their Simplicity : For Extension , by Example , with the various Modes of Extension , as Figure , Motion , &c. is not a Compound , but a Simple thing . For that is said to be a Compound which contains two , or more Attributes , whereof the one may be distinctly perceived without the other ; and since the Modes cannot be considered without the Substance in which they are , it cannot be said that they make a Compound of it . A Simple Being is that in which one only Attribute is found ; whence it follows , that that Subject in which Extension alone , with its various Modes is understood , is a Simple Being ; and that wherein we only apprehend the Cogitative Faculty , with the various Modes of Willing , Understanding , Imagining , is likewise a Simple Being : But that which comprehends both Extension and Cogitation is a Compound , viz. Man , who confists of Soul and Body . XV. Substance is sometimes consider'd as a Mode . Secondly , Hence it follows that a Substance may sometimes be applicatble to another in manner of a Mode . So Cloaths , when a Man is said to be Cloathed , must only be called a Modus , notwithstanding that they are Substances ; because Man is then considered as a Subject , to which Cloaths are added in the manner of a Mode . XVI . The distinction betwixt an Attribute , a Mode , and a Quality . Thirdly , From what hath been said we may gather , that we may conceive some difference between an Attribute , a Mode , and a Quality : As that an Attribute is that which is generally conceived to be in a Substance ; so he who thinks of the Duration of the Sun doth contemplate an Attribute , under which the Sun is understood , forasmuch as it continues in its being . And thus all Attributes are then distinctly understood by us , when we take care to affix no Conception of a Substance to them . We call that a Mode , which any way affects or varies a thing : So Wax is diversified by Figures . And a Quality is that whence a Substance is denominated Talis , or such like ; as Wax , that is , soft , cold , white , &c. so softness is the Quality of Wax . XVII . With what Names Substances and Modes are exprest . The Names whereby we express Substances , are called Nouns Substantive , as Mind , Body , &c. The Names which express Things modified , and which primarily and directly signifie Substances , and Modes indirectly , are also Nouns Substantives : As the Earth , the Sun , &c. But Words that primarily and directly , but confusedly signifie Substances , and which indirectly , but distinctly express Modes , are called Nouns Adjective ; such are round , white , just , &c. XVIII . What Propositions of Eternal Truth are . The other things which fall under our Knowledge , are Propositions of Eternal Truth ; which are not understood as Existing things , or the Modes of things ; but as Eternal Truths abiding in our Understanding : As , That which is , whilst it is , cannot be nothing : I am , because I think : What is once done , cannot be undone ; which are therefore called Common Notions , because they are so simple and clear , that they cannot but be perceived by all Men. Neither must it be look'd upon as an Absurdity , that we call any thing Eternal and Immutable , besides GOD ; because we do not speak here of Existing things , but ●only of Notions and Axioms which are in our Mind . XIX . The same are perceived by all , except their Prejudices hinder them . Neither doth it hinder the Truth of these Propositions , that all of them do not appear equally evident to all Men ; for the Reason of this is , because they are not all conceived after the same manner , and consequently not with the same Evidence . Not that I think the Minds of Men to be divers , and that the Knowing Faculty of one Man is larger than anothers ; but because probably these Common Notions may thwart the prejudicate Opinions of some Men , who therefore cannot so easily apprehend them ; tho' others that are free from such Prejudices , do perceive them with the greatest Evidence . CHAP. VII . Of the Common Attributes of Substance . I. The Attributes by which Substance is known . FOrasmuch as Things are understood by their Attributes , and are the more distinctly conceived by us , by how much the more Attributes we apprehend in them ; I thought it needful to reckon up all the Attributes of Substance , that so nothing that belongs to the Nature of it , may be concealed from us . II. There are two Genus's of Attributes . The Attributes of Substances are either Primary or Antecedent , or Originate and following from the Antecedent . The Primary are those which are considered by us as certain Principles ( not Effective , but Formal ) as well of the Substance , as chiefly of all the rest of the Attributes ; seeing that when they are supposed , the others immediately follow , and are therefore called the Principles of Being or Substance ; and they are two , viz. Essence and Existence . III. Essence . ESSENCE is the first Radical and inward Principle , Foundation , and Root of Substance , and all its Properties and Operations : For it is the Entity or Form whereby it is something , and that which it is . Thus a Spiritual thing , fuppose an Angel , by means of its Essence is not only a thing , but also such a Being that is Intelligent , and not a Material Substance . And so likewise a Body hath not only from its Essence that it is something , but also that it is Material , and void of Understanding . And therefore the Essence is by the Schools called , the Metaphysical Form , because it is the Chief thing whereby a Thing is distinguish'd from all others . When I say , the Chief Thing , it is not to be understood as if there were something in Substance , besides Essence , but only with respect to our Perception , which commonly proceeds by Parts , tho' the Thing it self be Simple , without any Composition . IV. Existence . Having inform'd our selves what the Thing is that is in question , the next enquiry is , Whether it be ; that is , whether such a thing be to be found in the Nature of Things ; to which the foresaid Essence doth belong ; and to this Question Existence belongs , by which a Being is said to subsist , or by which the Essence is constituted in the Nature of Things : And therefore is called Actus Entitativus , an Entitative Act ; as if Existence were only understood by the operation or acting of Things . A Being in Potentia , or a Possible Being , is opposed to a Being in Act. So a Lilly in Summer is said to be an Existent Being ; but in Winter , a Possible Being , Ens in Potentia ; because tho' it do not then exist , yet it is not repugnant to it , to be or exist in Time. Whence it appears that Essence and Existence cannot be separated from each other , since ( to speak properly ) they are nothing else but two different Modes of Thinking : For we do otherwise conceive the Essence of a thing , when we abstract Existence or Non-existence from it , than when we conceive it Existing . So when we apprehend Possible and Actual Being in one and the same thing , by different Conceptions , we do indeed conceive the thing as in a twofold State , but do not therefore divide it into more things . Thus the Sun that now appears in our Heaven , is the same that has continued from the beginning . Therefore the Power by which things that are not yet , are said to be Possible , is called Objective ; forasmuch as such Things are the Objects of some Cause , by which they may be produced in due place and time . V. Attributes Originate , or proceeding from others . From these two first or primary Attributes , other Attributes follow , which are likewise common to all Substance , and are called Originate , or Consequent ; and are either Absolute , which belong to the Substance considered by it self ; or Respective , which agree to the Thing with reference to others . The Absolute Attributes are Duration , Unity , Truth , Goodness ; &c. VI. Duration . Duration is nothing else but an Attribute , under which the Existence of Created Things is understood , with reference to their perseverance in their Actual existence . So that Duration agrees to all Existent Beings , as long as they exist . With respect to Duration , some things are called Corruptible , and others Incorruptible . A Corruptible Being , is that which can perish and cease to be , or lose the Existence it hath : As the Individuals of every Species , which may be corrupted and changed into another Species . An Incorruptible Being is that , whose Existence cannot be destroyed , and is either Simply such , as GOD , who is subject to no Change or Corruptibility ; or in certain respects only , which is preserved by the Power of GOD , so as to suffer no diminution or increase . So Matter which continues one and the same in the World , is said to be Incorruptible ; tho' second or singular Matters , as to their Forms , be subject to Generation and Corruption . VII . Unity . Another Attribute of Substance is Unity , by which every thing is said to be Undivided in it self . Thus those things are said to be One , which are of the same Subaltern Genus or Species , because they are considered by us under one and the same Notion , and for that we make use only of one Conception , to represent all those Things to our Minds which agree together : And this Unity is called Universal . But Singular Unity appertains to those Things , which without the Operation of our Mind are undivided , or to whose Nature it is repugnant to be divided into more Entities ; whereby is verified that Common Saying of the Philosophers , That whatsoever is , is Singular ; because that which is not One , cannot be esteemed to be . Some Things again are One by themselves , and others by Accident : Things One by themselves are such as have an Undivided Nature , whether they be Simple or Compound . For the multitude of Parts is no hindrance of Unity , so the Parts , which constitute a Third thing , be but closely joyned together . For Man is said to be One by himself , notwithstanding that he consists of Parts of a different Nature , and separable from each other . Whereas those things are called One by Accident , which consist of disjoynted Parts , and between which there is only a very slight Union . So an Army is called One Body by Accident , because it consists of a great number of Men joyn'd by an Imperfect Union . VIII . Truth . In Substance we also consider Truth , which is commonly called Metaphysical , or Transcendental ; and is nothing else but the correspondence of the Name with the Thing signified by it . For in this Sense the Nature and Essence of every thing may be said to be True. So that to enquire into the Nature of any Thing , is the same as to search what a Thing is , and of what kind it is : And to find out Truth is nothing else , but to comprehend whether a Thing be , and of what Nature a Thing is . Wherefore , since it is not in the Power of Creatures , to change the Natures and Essences of Things , no more than they can Eternal Truths , it follows , that there is nothing opposed to Transcendental Truth . For tho' Justice be opposed to Injustice , Truth to Falshood , and true Gold to false Gold ; yet the Things which are opposed to true Vertues have no Nature , neither have we any positive Idea of them : For that which is opposite to true Gold hath no Essence at all ; and in like manner , that which is contrary to True Faith , or True Fortitude . IX . What things are said to be true Metaphysically . To Metaphysical Truth are referred not only those Things which have , or may have an Existence without the Intellect , as all Natural Beings ; but also whatsoever is Positive , and consequently hath an Essence or Nature , tho' it have no Existence without the Intellect . For not only those Things which are the Object of our Senses , as Heaven , Earth , the Sea , Sound , Colour , &c. do enjoy a True and proper Essence ; but Fortitude , Justice , a right Line , a Triangle , Cause , Effect , and in a word , whatsoever we apprehend as Positive , or in the manner of an Entity . For we say , True Justice , a True Triangle , &c. because their Nature is True , and because we can demonstrate many things of them ; as of Justice , that it gives to every thing it s own : Of a Triangle , that its three Angles are equal to two Right ones . X. Goodness . Goodness follows Truth , and is likewise reckoned amongst the General Affections of Substance : For if a Thing have that Essence which it ought to have ; that is , if it be True , it must of necessity be Good also . And therefore we frequently confound the Denominations of True and Good ; as when we call a True Syllogism , Good , because the thing which agrees with our Understanding , cannot disagree with our Will , in case the Will be right , and that it be carried towards it after clear Perception . Thus GOD , after he had Created the World , and all things contain'd in it , he declar'd them all to be very good , because they agreed with the Idea's he had of them , and therefore were such as he would have them to be . Wherefore Aristotle defines Good to be that which all do desire ; forasmuch as nothing is desired , but what agrees with the Will. As there are many degrees of Truth , so also of Goodness , whilst we account some more excellent than others , which we more especially do , when we measure the Goodness of any thing from its Actions , or the strength and force of its Acting . Thus we say , that the Mind excels the Body , and the Fire the rest of the Elements . XI . Relation . Thus much for the Absolute Attributes of Substance ; we proceed now to the Relative , which agree to a Substance as related to another , and not as considered in it self . Now Relation is nothing else , but a Mode of our Understanding , comparing one thing with others , because of some Properties or Acts that are found in them : So a Father is Related to his Son , because he hath begot him ; and the Son to his Father , as being begotten of him . If we consider a Father and Son Materially , without their Relation , we shall call them Subject ; but if we consider them with respect to one another , we shall call the one the Relate , and the other the Correlate ; because as the Father is related to the Son by Paternity or Fatherhood ; so is the Son to the Father by Filiation or Sonship . Upon which account it is that Relatives are said to be or exist Naturally both together ; because you cannot suppose the one , without supposing the other : For supposing a Husband , you must suppose a Wife too ; and supposing a Master , he must have a Servant . XII . Relation is manifold . Relation is manifold ; viz. a Relation of Origination , of Negation , of Affirmation , of Comparison , of Composition , of Accession , and of Substitution . Relation of Origination is , between a Principle and that which proceeds from it ; as between the Day-break and a Day , a Point and a Line , a Substance and its Properties . Relation of Negation , is between distinct Things , or between Things going before , and those that follow after . The former of these is called a Relation of Distinction , the latter a Relation of Order . Relation of Affirmation is , whereby one thing is affirmed of another . Relation of Composition , is between the Whole and the Parts , the Simple and the Compound , the Perfect and Imperfect , Relation of Accession , is between the Subject and the Adjunct . Lastly , Relation of Substitution , is that which intervenes betwixt the Sign , and that which is signified by it ; the Measure and the thing Measured ; the Image and the Original . XIII . Opposition . As one Substance is related to another , so likewise it is opposed to another : As when we so conceive of Two things , as that they cannot consist together . So white and black Things are said to be opposed , and these are called Contraries , because the Essence of one is different from the Essence of the other ; yet not wholly and altogether , but because there is something in the Nature of one of them , which is not in the other . Those things are called Disparate , or Disagreeing , when one thing is opposed to many after one and the same manner ▪ As white is opposed to green , yellow , blew ; because white is not only opposite to green , but also to yellow and blew , and all Middle Colours . But when one Opposite altogether denies the other ; as a God , No God ; they are commonly called Contradictories . And this is the greatest of all Oppositions , forasmuch as it denies every where , and always . But if it deny the same only in a certain Subject , as Sight in a Sensitive Creature , then they are called Privative Opposits : Because by Privation is understood the absence of some Entity in a Subject capable of receiving it , as Blindness in the Eye , which is capable of Sight . XIV . Order . Order is another Attribute of Substance , consisting in first and last , or former and latter . It is various , according to the diversity of Place , Time , Dignity , Knowledge , and Perfection , which we conceive to be in things . Order of Knowledge , is taken from the Things themselves ; and by this Causes are before Effects ; Simple Terms are more known than Complex . Order of Dignity , is fetch'd from the Essence of things ; thus the Mind is more worthy than the Body : Or from Accidents ; thus a King is more worthy than his Subjects , a Master than his Servants . A Thing is said to be before another in Nature , whose Essence doth precede the other ; or from whose Existence the latter is not inferr'd , but on the contrary : So an Animal , or a Sensitive Creature , is said to be by Nature before Man ; because tho' an Animal exist , it doth not therefore follow that a Man exists ; yet when a Man exists , it follows that an Animal exists also . CHAP. VIII . How the Name of Substance agrees to GOD and the Creatures . I. How many ways Names agree to a Thing . FOr the better clearing of this Difficulty , we are to suppose with Logicians , that a Name may after divers manners be communicated to a Thing . First , Univocally , when it agrees to many Things for the same Reason ; as when the name Triangle is given to all Figures contained within three Lines . Equivocally , when we call many things that are Essentially distinct by the same common Name , for divers Reasons : As when in Latin we use the Name Gallus , to signifie a Cock and a Frenchman ; or when we use the word Parabola , to signifie an Allegory , or Similitude , and a Geometrical Figure . Analogically , as when we give the same Name to many Things ; but to one Principally , and to the other Secondarily : As when we say that an Animal , a Pulse , and Physick are Healthful ; for Health principally and chiefly agrees only to an Animal , to the Pulse as it is a sign of it , and to Medicine , because it procures it . Having briefly observed these things , II. The Idea of Substance does not agree Univocally to GOD and the Creatures . I say , First , that the Name of Substance doth not agree to God and the Creatures Univocally . Which I prove thus : Different Participation destroys Univocation ; but God and the Creatures participate the Name of Substance after a different manner therefore . The Minor is proved , because God is a Substance Independent of any other ; but all other Creatures are Substances dependent of Him : GOD alone is He , who needs no other to his Existence ; but all Creatures stand in need of the Divine Concourse for their Existence , neither can they without it be conceived to exist in the Nature of Things . III. The same exprest in other words . Or otherwise thus : The Idea of Substance , is the conception of a Being subsisting of , or by it self ; but there is no Creature so exists by it self , as to be sufficient for its own Existence , or so Powerful , as to be able to keep and preserve it self : Wherefore the Name of Substance cannot Univocally agree to God and the Creature . IV. A Being from himself and from another , are absolute Differences . And if with more attention we consider the Matter , we shall find that God and the Creature do not agree in the Idea of any Genus whatsoever ; and that the word Being , Ens , which is commonly by Logicians attributed to God and the Creature , is perfectly Equivocal ; and that the Equivocation is not more plain in the word Dog , when attributed to a Constellation in Heaven , and to a Beast on Earth ; or in the Latin word Jus , which signifies Law or Right , and Broth , than in the word Ens , or Being , when given to a Being which is of it self , and to one that is from another and altogether dependent . For to exist of ones self , or to be made by another are meer Differences , which do not admit any common Genus ; and as God is distinguished by the former , so are all Creatures by the latter : God being a purely Self-existent and Independent Being , and the Creatures purely dependent Beings , and existing from another . V. God is above Substance . Wherefore S. Denys calls GOD Super-substantia , and Super-ens , ( Above-substance , and Above-entity ) because he is raised above all Substances , and separate and distinct from all other Things whatsoever . Accordingly he that would make a true Scheme of the Predicaments , must set down Ens à se , or a Self-existent Being by it self , and distinct from the Series of other things ; and afterwards Ens ab alio , or a Being that is from another , as the Original of Differences , placing at the Right hand of it Intellectual , and on the Left Corporeal , and then put the next Division of Things . Because the Name of Entity , or Being , only agrees with the Being , which is of it self , and can only Equivocally be assigned to Creatures , that have their Being from another . VI. An Objection answer'd . If any one say , that the word Substance agrees in common both to God and the Creatures , and that all the Inequality that is found in them doth arise only from the Differences of it ? I answer , That this is not true , forasmuch as Dependency is involved in the Essential Conception of a Creature . Now it is required to the Nature of Univocal Words , that they be equally communicable to all , and not to one Primarily and to the other Secondarily , or with dependance on the First . VII . The Idea or Notion of Substance is Univocally competent to Creatures . I say in the Second place , that the word Substance doth Univocally agree to all Creatures . For all Creatures are conceived under this Common Notion , that all of them stand in need of the Divine Concourse for their Existence . Now that Name which is attributed to many for the same Reason , and equally participated by them , is Univocal ; therefore the Name of Substance is distinctly understood to be Common to all Creatures , according to the property of Univocals . VIII . Why the Genealogy of Things and Modes is here annexed . Having thus explained these Things , I think I have with one and the same labour explained all Metaphysicks , concerning Entity and its Affections ; yet that no Body may complain , that the same has been left out in this Institution , seeing the consideration of it doth indeed belong to Logick , I shall subjoyn here such a Genealogy of Things and Modes , by means of which the Student of Philosophy may , as it were at one View , contemplate the whole University of Things . The Fifth Rule of Truth . It avails much to the clear and distinct Perception of Truth , to retain in ones Mind an accurate Genealogy of Things and Modes , that with one cast of an Eye we may be able to take a view of the whole Universe of Things , beginning from the most General , and ending in the most Special . IX . The Use of the foregoing Rule . The Reason is , because this will be a great Help towards the thorough Knowledge of Things , as pointing us to what Tribe they do belong , what Affinity they have with some , and what Difference from other Things ; neither will it be of less Use to us in the defining , describing , and distributing of Things . And to the end you may have a short Compendium at hand , of all those Things in general , which fall under the Perception of our Mind , and consequently also of those Idea's , which the Mind forms to it self , whilst it beholds them : Behold I here furnish you with such a Genealogy , as contains all and every one of the Genera of Things and Modes , each in its proper order and degree . The Genealogy of Things and Modes . Whatsoever falls under the clear and distinct Perception of our Mind , is somewhat . And that Somewhat , is either A Thing , A or , The Mode of a Thing , B A. I. A Thing , ( or an Entity or Substance , for they are Synonymous ) is something which hath an Essence and Existence distinct from all other Things . Essence is the Natural and Invariable Constitution of the Thing , by which it is that which it is . Existence is a Consequent upon the Essence of a Thing , by which it now actually is , or is the Essence it self now existing in the University of Things . The Consideration whereof belongs to 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 , by some called First Philosophy , and by others Metaphysicks , which treats of Things Universally , and therefore also is called Catholi●k , or Universal . A Thing or Substance in General , is twofold Thinking , a or , Extended , b Thinking , or a Mind is either a. 1. Infinite , as GOD , whence is Natural Theology . 2. Finite , as the Mind of an Angel , whence is Angelography . a Man ; whence Psychology . This part of the Genealogy of a Thinking Substance is handled in Noetica , that is , Pneumatica , as others term it ; the Parts whereof I have just now mentioned . b. A Thing Extended , or a Body , is twofold . I. An Element ; that is , a Principle whence other mix'd Bodies have their Original , and into which they are resolved again at last . Which again is Threefold . 1. Subtil Matter , which constitutes the Stars . 2. The Heavenly Globular Matter , whence the Light and Heavens are . 3. The Grosser Particles of Matter , whence are the Planets and Comets . II. Elementatum , or Principiatum ; that is , all those things that have their Original from the Elements . And these are again Twofold : I. Without Life , or Concrete ; which branch themselves into , 1. Simple Concretes ; as the Heaven , which consists of the Globuli of the Second Element ; and the Stars , of the Matter of the First Element . 2. More Compound Concretes . 1. Those on high , as Planets , Comets , &c. 2. Those beneath , as Fire , Air , Water , Earth , and things consisting of these : As , 1. Meteors , as Vapours , Wind , Rain , Snow , Hail , Thunder , &c. 2. Fossils ; that is , Minerals , Metals , and Stones Common , or Precious . II. Living , or Animated . 1. Without Sense , or Vegetable , As all kind of Plants , whether Herbs , Shrubs , or Trees . 2. Endowed with Sense ; as an Animal , 1. Rational , as Man. 2. Irrational , as a Beast . This Part of the Genealogy , concerning Extended Substance , or Body , is unfolded in Physiology , or Natural Philosophy , which is also called Somatica . B. II. The Mode , ( that is , the Attribute , Affection , Accident ) of a Thing , is somewhat of an Entity or Being , that is and exists by the assistance of another thing . These are Twofold , General , a or Special , b a. I. General ; Such are the Modes or Attributes of all Things in General , commonly called Transcendentals : As , 1. Unity ; by which every thing is always one and the same , and Undivided . Multitude is a Collection of Unities . 2. Truth ; by which a thing is conformable to its Idea . Falsity contrariwise . 3. Goodness ; whereby it is fit for Use . 4. Perfection ; whereby it is whole and entire , and hath whatsoever it ought to have . 5. Locality ; whereby it is every where , as God ; or somewhere , as all other Things besides God. 6. Duration ; whereby a Thing continues in its Existence either always , or for a certain time : As Eternity . Time Present , Past , Future . These Things are explained in the First Philosophy , or Metaphysicks , which treats of Things , and of their Modes and Affections Universally . b. II. Special ; Such are the Modes or Attributes of Things in Specie . ( 1 ) For the Division of Things : As , 1. The Modes , that is , the Attributes of a Thing Cogitating : As , Intellection , and Volition . Power to act of it self , 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 . 2. The Modes or Attributes of a Thing extended , or Corporeal : As 1. Quantity , or Magnitude ; which Mathematicks , or Posotica treats of . 2. Figure , or the different Termination of Magnitude , handled in that Part of Mathematicks , which is called Geometry . 3. Situation , or the certain Position of a Thing in Place and Space . 4. The Quiet or Rest of the Parts of any Thing . 5. Local Motion , or the Variation of Situation , whence proceed Active and Passive Qualities ; as Rarity and Density , Fluidity and Hardness , Heat and Cold , Moisture and Driness , and the rest ; which are treated of in Natural Philosophy . ( 2. ) From the Conjunction of a thing Thinking , and Extended . result the following Modes and Affections . 1. The Appetite of Hunger and Thirst . 2. The Senses Internal ; Phantasy or Imagination and Memory . External ; Seeing , Hearing , Smelling , Tasting , and Feeling . And their Affections , as Waking and Sleep . 3. The Affections or Passions ; as Love , Joy , Hatred , Sorrow , Hope , Fear , and the several kinds of them , which are also handled in Physiology . X. The Scope of a Philosopher is , to know the Natures of Things . Hence we may gather in the first place , that Philosophy considered in all its Parts , is nothing else but a Scientifical Explication of this or a like Genealogy . For a Philosopher pretends nothing else , and is content with this alone to understand the Natures of Things , to know their Forms , Differences , Affections , and that from the nearest Causes , if the Mind can reach them . Now this will hardly be obtained by him who is not well vers'd in the Genealogy of Things . In the next place , That this Genealogy is abundantly sufficient to supply the place of the Common Categories and Predicaments of the Aristoteleans . XI . What the Peripateticks understand by Predicaments . By Predicaments and Categories , they understand such a Series and Disposition of Things , in which the Superiour is always predicated , that is , affirmed Univocally , that is , according to Name and Thing , of its Inferiours in the same Predicamental Line . Taking this for granted , as a thing known to all Men , there are many things which I cannot approve of in the Constitution of those Predicaments . XII . What is to be disproved of in the Categorical Series . First , That they divide Ens into Substance and Accident without any Reason : Forasmuch as an Accident is no Entity , as appears from the foregoing Definition of Ens ( A. I. ) ; but rather is something belonging to an Ens , according to ( B. II. ) Secondly , In that they constitute Nine supream Genera of Accidents , which they thus reckon up ; Quantity , Quality , Action , Passion , Relation , When , Where , Situation , and Habit. Where first they mistake in this , that they make those to be the Supream Genera , and distinct too , which truly are not so ; as Quantity , and Quality : For the greatest part of Physical or Natural Qualities arise from Quantity , Figure and Motion . Secondly , Relation doth not in the least belong to the Genealogy of Things , because it is no absolute thing , but only an Affection framed by Reason , viz. an Opposition , with or under some respect . Thirdly , Action and Passion in Bodies are reducible to Motion , whose Species or Modes they are . Fourthly , The Division of Ens into Substance and Accident , invented by Aristotle , deviates from the Rules of a good Division ; because the Parts of it are not opposite . Fifthly and lastly , If any true Attributes of Things be fonnd amongst them , the same may be more fitly deduced from our Genealogy : As for Example , Quantity belongs to the first Mode of an Extended Being : Quality , if it be Mental , to the Modes of Intellection and Volition ; if it be Physical , or Corporeal , to the Fifth Mode of an Extended Being , or to others : When and Where , to Duration and Place , which are the General Attributes of Things : Situation is the Mode of an Extended thing , or the respect of one Body to others , considered as near to it : And Habit is the Common Adjunct or Accident of some Things ; as of a Human Body , or some other . CHAP. IX . Of the Whole and Parts , Causes and Effects , Subject and Adjunct . I. Some other things necessary to be known in order to clear Perception . HAving thus Explained the General Attributes of Things , as far as is sufficient for the Knowing of Things in General ; if any one further desire to Know Things more distinctly and evidently in Specie , and particularly , he must consider the thing either as a Whole , consisting of Parts ; or as an Effect , produced by Causes ; or as a Subject , furnish'd with various Attributes . For this will be a great furtherance to attain a clear and distinct Knowledge , that is , Perception of any Thing . II. The Order of Things here to be treated of . It follows therefore , that we explain the Notions of a Whole and its Parts , of a Cause and its Effects , of Subject and Adjunct ; because from these Notions , the Idea of every thing is absolutely and to the Life express'd in the Mind of him that Thinks . III. What a Whole is , and how manifold . We call that a WHOLE , which consists of many things joyned together , or which hath Parts , into which it may be divided : For a thing which wants Parts , is improperly called a Whole . Wherefore the Aristotelians are in a Mistake when they say , that the Mind of Man is Whole in the whole Body , and Whole in every Part ; because the Mind being an Intellectual Substance , is without Parts , and after an Indivisible manner in the Body . Wherefore also an Immaterial Substance cannot be said to be Whole , save only Negatively , inasmuch as it doth not admit of Parts , or Division . A Whole is threefold , Essential , Integral , and Universal . An Essential Whole , is that which consists of Parts , whereof the one is in the other , as are Matter and Form : Thus Man consists of Soul and Body . An Integral Whole , is that which hath Parts without each other ; as a Man's Body consists of Head , Hands , &c. An Universal Whole , is any Genus with respect to its Species ; as Animal respecting Man and Beast : Or a Species , referring to its Individuals ; as Man to to Socrates and Plato . IV. What a Part is , and how manifold . We call that a PART , which together with its Copart , or with many of them , doth constitute a Whole ; as the Soul and Body make a Man. A Part is either Principal , without which a Whole cannot consist ; as is the Head in a Human Body : Or Less Principal , which when sever'd doth only maim the whole , but not destroy it . V. What is meant by the word Cause . Tho' the Word CAUSE be of it self sufficiently known to all , and therefore the Explication of it seems superfluous ; yet is it commonly defined , That from whose Being something else follows : Or , That which of it self , influenceth something different from it self . Accordingly , GOD the Father is the Principle , but not the Cause of the Son ; for the Son is another Person from the Father , but not another Thing , that is , not of another or different Nature . VI. The division of Causes . There are Five Genera or kinds of Causes , viz. the Material , the Formal , the Efficient , the Exemplary , and the Final . VII . What the Material Cause is . The Material Cause , is that out of which things are made or formed ; as Wax is the Matter of which Tapers are made ; Pewter , the Matter of which Pots are made ; Gold , of which Guinea's are made . So that whatsoever is agreeing or disagreeing with the Matter , the same also agrees or disagrees with the Things that are made out of it . VIII What the Formal . The Formal is that which Constitutes another thing and distinguisheth it from all other ; as the Soul is the Form of Man. But whether the Forms of other things be Physical Entities , as they talk in the Schools , or only a disposition of Parts , shall be discoursed in the General Part of Physiology , where this Point shall be distinctly handled . Both these Causes are called Internal , because they abide in those Things whose Essence they do constitute . IX . The Efficient . The Efficient , or Effecting Cause , is that which produceth another thing ; and the same is manifold . X. A Total Cause . Total or Adequate , which alone doth produce the Effect , excluding other Causes of the same Rank ; as God creating Adam , whom he produc'd without the Concourse of any Other . XI . Partial Causes . But a Father and Mother , or Male and Female , are said to be Partial Causes , with respect to the Child they generate ; because they need each others assistance , and can do nothing solitarily . XII . Proper and Accidental Causes . The Sun is the Proper Cause of Light ; but only an Accidental Cause of the Death of a Man , who is kill'd by too great Hear ; because the bad Constitution of his Body , was the occasion of his being hurt by the Heat of the Sun. XIII . The Near and Remote A Father is the Near Cause of his Son ; but a Grandfather the Remote . XIV . The Effective Cause . A Mother is the Effective , or Productive Cause of her Son , because she effects a thing which before did not exist . XV. The Conserving Cause . A Nurse is only the Conserving Cause , because she only effects the Continuation of its Existence , and lends her assistance that it may continue in that Existence , which it hath received from its Parents . XVI An Univocal Cause . A Father is an Univocal Cause , with respect to his Children ; because they are of the same Nature with him . XVII . An Equivocal Cause . But GOD is only an Equivocal Cause , with respect spect to his Creatures ; because they are of a different Nature from His , and in Dignity inferiour to him . XVIII . A Principal Cause . An Artificer is called the Principal Cause of his Work , because he acts voluntarily ; but Instruments , because they are managed by him , as means subservient to the performing of his Work , are only said to be Instrumental Causes : Because tho' there be some kind of Power to work in the Instruments , as in the Hatchet to Cleave , in the Knife to Cut ; yet can they not produce the said Effects , except they be actuated and applied by another Cause . And therefore are called Passive , because they receive their acting Power from the Principal Cause . XIX . An Universal Cause . The Water that springs up into divers Water-Works in the Gardens of Princes , and which moves variety of Machins , is the Universal Cause of their Motion , because it is indifferently forced up into them all : But the Artificial disposition and figure of the Pipes is the Particular Cause , which determines the Universal , and restrains it to some particular effect . XX. A Natural Cause . Bodily Things , when they act , are said to be Natural Causes , because they produce an Effect from a Natural Propensity or Necessity , without any fore-knowing Knowledge ; as the Sun , Fire , and the like : But Man is the Intellectual Cause of those things which he effects by his Understanding and Will. XXI . A Voluntary Cause . A Man that Walketh is a Free Cause , because he acts spontaneously , and not by force : But a Fire burning Wood is a Necessary Cause ; because where those things are present which are required to its action , as dry Wood , application of them to the Fire , and Ventilation or Blowing , it cannot but burn them , neither can it exert any other Action instead of it . XXII . A Proper Cause , and without which . The Sun , whilst it enlightens a Chamber , is the Proper Cause of the Light that is in it : But the opening of a Window , or taking down of the Shutters , is only a Cause sine qua non , or without which such an Effect would not follow ; which Cause is also called the Condition , without which a Thing cannot be . XXIII . A Physical and Moral Cause . A Fire that burns Houses , is the Physical Cause of that Burning or Consuming , because the Fire properly and of its own Nature burns : But a Man who sets Houses on Fire , or that exhorts or commands others to do so , is only a Moral Cause of this Burning ; because he hath only Morally contributed to that effect , viz. by Exhorting or Commanding . Thus the Serpent , or the Devil , was the Moral Cause of the Fall of our First Parents . XXIV . An Exemplary Cause . The Form which a Man proposeth to himself in going about to make a Work , is called the Exemplary Cause ; as the Form which an Architect conceives of a House he is about to build ; and generally whatsoever can be a Cause of an Objective Entity , or of forming any other Image . So he who is the Object of the Eyes or Mind of the Painter , is the Exemplary Cause of his own Effigies or Likeness . XXV . What the Final Cause is . The Final Cause , is the End for which any thing is ; as when a Man applies himself to his Studies , in order to the attaining of Learning : And therefore the End is commonly defined , the Cause for whose sake any thing is . XXVI . A Primary End. An End is twofold , either Primary , which is principally intended ; as the End of a Knife is to Cut ; of a Garment , to cover the Body , and to shield it from the Injuries of the Weather . XXVII . A Secundary ' End. A less Principal or Secundary End is , which moves one only in a less degree , and is only considered as something Accessory . Thus the Secundary End of a Garment is to adorn the Body . XXVIII . The End for whose sake . That which a Man intends to do , or to obtain , is called the End for whose sake : So Learning is the End of Studies , Health the End of the Physician 's Art , as being that which it intends to procure . XXIX . The End for whom , Adequate and Partial . He for whom any thing is desired , is called the End for whom : So Man is the End for whom of Medicine ; because it designs to procure Health to him . To form ones Reason aright , or to direct the Understanding into the knowledge of all things whatsoever , is the Adequate End of Logick : But to direct the Understanding in Natural things , or in the exercise of Vertuous Actions , is the Inadequate or Partial End of Logick . XXX . The Number of Causes . Whence we may gather , that the Material Cause is that out of which Things are made ; the Formal , by which ; the Efficient , from which ; the Exemplary , according to which ; and the Final , for which things are made . XXXI . The Causatum , or Thing Caused is fivefold . Whence it follows , that the Effect or Thing caused , which depends on the Cause , and by virtue whereof it is , is Fivefold ; viz. an Effect , which proceeds from the Efficient Cause : The Thing designed , or the Means ordained to the End : The Thing materiated , or which consists of the Matter , and is made of it : The Thing formed , or constituted by the Form. To these you may add the Thing exemplated , in respect of the Exemplar according to which it is made . XXXII What a Subject is . That is called a Subject to which something is adjoyned , or to which something accrues besides its Essence : So Cloaths are put on the Body ; the Soul of Man is joyned to his Body ; Writing is applied to Paper . XXXIII . The difference betwixt a Subject of Inherence and Adherence . A Subject of Inherence , is that into which something is received : So a Spunge is said tobe the Matter into which the Water is received : The Outside of the Wall is that which receives the plaister or whiting in it . A Subject of Adherence is , which receives another thing upon it self , or to it self , as a Hand that puts on a Glove . A Subject Containing , is that which comprehends any thing within it self ; as a Vessel doth Water , or the Sheath doth the Sword : Because by Subject nothing else is understood here , than that to which something is joyned besides its Essence ; or to which something supervenes after its production and constitution . XXXIV . A Subject is sometimes taken for an Object . A Subject is sometimes taken for an Object ; as when we say , to subject a thing to the Eyes of any one ; that is , to propose a thing to any ones Faculties , that he may act about or in it . So the Object of Hearing is a Sound , the Object of Seeing , Colour . XXXV . What an Adjunct is . We call that an Adjunct , which we consider to be in a thing besides it Essence , as something added , accruing or hapning to it , whether the same bring along with it some proper Reality ; as Fire in the Pores of hot Iron , the Soul in the Body : Or whether it be nothing else but a Mode of Substance ; as Love or Science in the Mind ; Motton , Figure , Rest , Situation in a Body . XXXVI . Adjuncts are only attributed to their Subjects in the Concrete . An Accidental Adjunct is predicated of its Subject in Concrete , and not Abstractedly . That is called a Concrete Adjunct , which denotes the Accidental form together with the Subject ; as White , Learned , Great , &c. An Abstract Adjunct is that which signifies only the Accidental or Modal form ; as Whiteness , Learning , Greatness . Wherefore an Adjunct is predicated of its Subject in the Concrete ; Snow is white , Socrates is Learned , Great : But by no means in the Abstract ; as Socrates is Whiteness , Learning , Greatness . To these things thus at large explained , we will subjoyn this Rule . The Sixth Rule of Truth . XXXVII . The Sixth Rule of Truth . The Idea or Perception of every thing is by so much the more clear and perfect , by how much the more Parts , Causes and Adjuncts of the thing it doth represent . For from the Parts we have a view of the Whole ; from the Causes , what is contained in the Effects ; from the Adjuncts , as so many Complements and Ornaments , we perceive the Nature of the Subject , and its Qualifications , especially from its proper inborn Qualities . CHAP. X. Concerning the Distinctions , whence the Nature and Difference of Idea's is deduced . I. What is the Consent and Dissent of Things . FOr a more clear understanding of what follows , we will premise something concerning the Consent and Dissent of Things . Now those things seem to me to Consent , which agree in Common Attributes and Logical Notions ; and those to Dissent , which do more or less disagree in the same . The Seventh Rule of Truth . II. The Seventh Rule of Truth . Those Things are to be looked upon as Agreeing , which agree in some common Idea or Reason , or whereof the one is included in the Idea of the other ; and they are said to disagree or to be diverse , which are the Objects of Different Idea's , and are apprehended after a diverse manner ; or the one whereof is not included in the Idea of the other . III. Which Things agree , and which do disagree . For those things only do Agree , which have the same Genus or Species , or Parts , or Causes , or Effects , or Subjects , or Adjuncts ; or Agree upon some other account : Whereas those which Disagree in the same , are diverse and dissentaneous . But those things do most of all Disagree , which are separated from each other by opposite Differences . IV. What distinction is , and how manifold . Wherefore Distinction in Common is nothing else , than the Diversity we find , between many things . Which Diversity , to speak properly , is only to be found between Existent Beings : For that which is not , cannot be said to be distinguish'd . Distinction is threefold , Real , Modal , and Distinction of Reason . V. What a Real Distinction is . Real Distinction is that which is found between two or more compleat Beings or Substances ; as between the Soul and Body , which we know to be distinguish'd from each other , because we can distinctly know the one without the other : For we can have no more evident sign of Real Distinction than this , that we do distinctly and clearly understand the one without the other . I said in the Definition , that Distinction is a Diversity , and not a Division ; because Distinction doth not take away Union , but Identity only . For tho' the Soul be never so closely United to the Body , yet it continues no less distinct from the same , than if it were actually separated from it : For it is sufficient to make a distinction , if the Things may be separated and preserved apart from each other . VI. The Soul and Body are Really Distinct , as Compleat Beings . But you 'l object against the Instance of Soul and Body , that they are only Incompleat Substances , and therefore cannot be really distinguish'd ? I answer , by distinguishing the Minor. I grant that the Soul and Body are Incompleat Substances , if they be referr'd to the Compound which they constitute . But if by calling them Incompleat Substances , you mean that they cannot subsist by themselves : This I deny . VII . What we are to understand by these Words , A Compleat thing . For when we say a Compleat thing , we understand nothing else , than a Substance furnished with such Attributes and Forms , as from which we gather it to be a Substance : For it is plain , that we do not know a Substance immediately , but from its Attributes , which because they must be in something or other , therefore we call the Subject in which they are , Substance . In which respect the Soul and Body are said to be Compleat Beings . The same may be said of all the Parts that concur to the making up of a Whole . Thus an Eye , for Example , is an Incompleat Substance , if it be compar'd with the Body , whose Part it is : But is said to be a Compleat Entity , when considered by it self alone ; and in like manner the Soul and the Body are Incompleat Substances in reference to the Whole Man ; but Compleat , when they are considered with those Attributes by which we know them to be Substances . VIII . What a Modal Distinction is . A Modal Distinction is that which is found between a Mode and its Subject , whose Mode it is : So Figure is distinguished from a Bodily Substance ; the Act of Imagining or Willing from an Immaterial Substance , or the Soul. For those things we know to be Modally distinguish'd , where the one of them may be conceived to exist without the other , but not on the contrary : As we can easily understand a Corporeal Substance without Motion and Figure , but can by no means conceive Motion or Figure without a Body . IX . How two Modes are distinguish'd . There is another Modal Distinction between two Modes of one and the same Substance : As between the Figure and Motion of one and the same Body , or between a Substance and the Mode of another Substance : But this latter is rather to be called a Real Distinction , than Modal ; forasmuch as That Mode may be clearly understood without the other , and hath no dependance on the Substance , as not affecting or modifying it . X. Distinction of Reason . A Distinction of Reason , is that which is found between a Substance and some one of its Essential Attributes : Thus Quantity doth not differ from a Bodily Substance , but only by a Distinction of Reason ; as Cogitation from the Mind . The Sign of this Distinction is , when we cannot have a distinct Idea of the Thing , if we remove from it that Attribute , as appears in the Examples alledged . And so likewise , two Attributes of the same Substance are distinguish'd only by Reason , if they be such as that the Notion of the one cannot be clearly conceived without the other ; as Justice and Mercy in GOD. And these are said to be Formally distinguish'd , because their Formal Idea's or Definitions are distinct or diverse . Booke 1. Part. 1. Chap 15. In Perfecto quiescit G. Freman Inv. I Kip Scul To the Worshipfull Thomas Vincent of Fetcham in the County of Surrey Esq . This Plate is humbly Dedicated by Rich : Blome . XII . The Idea's we have are not the Product of our Senses . In the Second place we infer hence , that the Ideas of our Mind , do not proceed from our Senses : For , as was said before , nothing is so clear an object of our Mind , as our Cogitation , neither is any thing more distinctly known to us , than this Proposition , I think , therefore I am : Now we can have no certainty of this Proposition , except we distinctly conceive , what Being is , and what Cogitation is ; and it would be in vain for any to demand any further Explication of these Words from us , since every one understands them , and cannot be further explained without some confusion . But who will say that these Idea's of Being and Thinking are produced by the Senses , and have been convey'd to the Mind , by the help of Bodily things ? Wherefore Ideas are not to be attributed to the Senses , but to the Mind , which hath the Power of producing them , and forming them out of it self , without any outward assistance . Tho' indeed the Mind be often excited to the producing of them from things that strike the Senses : Because this is no more , than in the case of an Architect , who may be inclined to Build a House from the Mony which is promised him : But it would be very foolish therefore to assert , that Mony had been the Original of the House . XIII . Clear Idea's . Thirdly , We may gather that Idea's are of two kinds , clear and confused : Because all of them have not the same Evidence , but exceed one another in clearness and distinction . Now those Idea's are called clear , which are evident and manifest to our Mind , when it gives heed to them ; in the same manner as we say that Objects are clearly beheld , when being present to us , they act strongly enough to be perceived by us , and our Eyes are well disposed to behold them . XIV . Distinct Idea's . Those Idea's are called Distinct , which are so precise , and diverse from all others , that they contain nothing , which doth not manifestly appear , to him that gives heed to them , as he ought . So when a Man feels some great Pain , that perception of Pain , is very clear to him , but is not always distinct : For commonly Men confound it , with their obscure Judgment concerning its Nature , which they suppose to be in the grieved part , and to resemble the Sense of Pain , which alone they clearly perceive . And the reason is the same concerning other Qualities , viz. Sound , Colour , Smell , Cold , Heat , all which they conceive to be in the Objects themselves , and think there is something like these Sensations in the Senses , or the Idea's we have upon their account . These Idea's therefore are called Obscure , because they represent things or Objects , confusedly or obscurely . Let this therefore be The Eighth Rule of Truth . XV. The Eighth Rule of Truth . That Idea , or perception of a thing is clear and distinct , which represents the thing it self to the Mind , according to the foregoing Rules of Truth : And that obscure and confused , which doth more or less depart from the same . XVI . The Rule explained . For seeing that that Idea is more clear and distinct , which involves least doubtfulness , and which represents more parts and Adjuncts of a thing to the Mind , and distinguisheth it from all other things ; it must follow that that Perception is clear and distinct , which represents a thing to the Mind according to the foregoing Rules . The Ninth Rule of Truth . XVII . The Ninth Rule . He whose Mind is furnished with most , and most perfect Idea's , is the most knowing and understanding Man. XVIII . The Explication of this Rule . For seeing that every thing is made manifest by its Idea , and whatever is known of it , is contain'd in its Idea , it is clear that the more Idea's we have in our Minds , the greater must be our Knowledge : And by how much the several Perfections do evidently and distinctly comprehend more particulars , by so much the more excellent and perfect must that Knowledge be . AN APPENDIX . Of the Imposition , Signification , Definition and use of Names . I. Of the Things that are handled in this Appendix . FOr as much as the Names or Words , we use in discourse are Marks and Signs of our Conceptions , and consequently of the things themselves , we have thought fit to add something here concerning their Imposition , Signification , Definition and Use , and this by way of Conclusion . II. Epicurus was of opinion that the names of things were from Nature . It hath been an enquiry amongst the Philosophers of old , whether the Names or Words we use in Speech , were from Nature , or from Custom , and Consent : Or , which is the same , whether it be natural for all Men to speak those words , by which they utter their Conceptions ; or whether they were imposed on things from the free choice of Men , and invented to be put instead of our Conceptions . Epicurus ascribes the original of Names to Nature , and asserts them to be effects produc'd by the force thereof . So that the first Men , when they were struck by the Image , proceeding from the Object , and found several Passions of Love or Hatred stirr'd up in them , broke forth into some Voices , by which they designed them , no otherwise than if they had pointed at them with the Finger , or some other Bodily Gesture . And accordingly his opinion was , as Proclus tell us , Chap. XVII . That Names are as well from Nature , as are the operations of Nature that go before them , as a Vocal Sound , or the Function of Seeing ; for that the same thing that sees and hears , must also name the things it sees and hears ; So that the Name Nature , is an effect or work of Nature . III. Whence the variety of Names proceeds according to Epicurus . For the variety of Names according to Epicurus , which is found in divers Nations , is to be ascrib'd to their different Temperaments , who being affected with different Passions , at the perceiving of things , did express one and the same thing diversly , that is , by a different Voice or Sound . Whence it came to pass that those Nations , who had no Commerce with others , still kept their own Idiom ; whereas those that had more Communication with others , did take in some of their Words , which were unknown to their Forefathers . IV. Names were imposed from Mens free choice . But whatsoever Epicurus may alledge to the contrary , the Names of things do not seem to proceed from Nature , but from the consent and agreement of Men. As may be proved first from Homonymy or Equivocation , by which the same word is attributed to divers things ; which was occasion'd by Mens joyning the same sound to different Idea's , so that the same Sound agrees to many Things , not according to the same , but different Idea's . As for Example , this word Vacuum or an Empty space , according to the vulgar use signifies , a place in which nothing is contained , of that which we suppose ought to be in it : As when we say that a Ship is empty , because it hath no lading . But according to Philisophers , Vacuum signifies a place in which no bodily thing is contained . In the second place , that Names have their original from the voluntary imposition of Men , is apparent from Polyonymy , and Synonymy which attributes divers words to one and the same thing : As Liber , Codex , both which signifie a Book ; Ensis , Gladius a Sword. Thirdly , The same may be proved from the changing of Words , by which sometimes one Word , and at other times another is given to the same thing : as now Aristocles , afterwards Plato ; now Tyrtanus , then Euphrastus , and afterwards Theophrastus . Which would not happen so , if words owed their use to Nature , and not to the voluntary institution of Men. V. Words signifie diversly amongst divers Nations . Moreover we find by Experience , that Words have their signification from the imposition and will of Men , forasmuch as the same Word signifies one thing in this Nation , and another in another Nation . For what is more common than for a Name or Word , which before represented nothing to your Mind , now to signifie something from the institution of Men ? For tho' words must be taken from the People , who have the Power of giving Law concerning them : Yet it is certain , that there is a kind of Speech proper only to those who follow some particulart Art or Calling . And tho' as Philo Judaeus saith , Speech be proper to Man , as Neighing to a Horse , Barking to a Dog , and Lowing to an Ox ; yet is not the faculty of speaking Natural , as to the signification of speech , but only with respect to the sound of the Word . For the signification of every word doth not agree to it , by any force of Nature , but wholly depends on the free will of Men. VI. Names are the Notes or Marks of our Conceptions . WORDS therefore being instituted by Men , are the Notes , and Signs of our Conceptions , and therefore of the things themselves ; whether they signifie our conceptions , or the things themselves . That they signifie the inward conceptions of our Mind , appears hence , that whenever we please , we can discover our Secrets , by words to others , they being the Interpreters of our Mind , which represents the image of our Thoughts . The word that sounds without , saith S. Austin 15 de Trin. Cap. XI . is a sign of the word , that lies hid within . For otherwise , except Words did intimate our Conceptions , there would be no such thing as a Lye , which consists in this , that the Mind of a Man doth disagree with the words he utters ; or when we have other conceptions in our Mind , than our words import . VII . Names do also signifie the things themselves . And that Names do also signifie the things themselves , we can prove by experience ; for because we cannot carry all things with us , we make use of words , for signs whereby to signifie absent things . For it is apparent , when any one calls for some particular Person , as for Example , Socrates , that the Name by which he calls him forth signifies the thing which Socrates is ; and when he commands him to come to him , to return answer , that the Thing is meant and not the Words . Hence the Scripture tells us , that GOD set all living Creatures before Adam , that he might give Names to them , conform to the Things themselves . So that it appears that Mankind makes use of Words to manifest their Conceptions , and the Things themselves . VIII . To avoid the confusion of Perceptions , we ought to define our Words . But because when Words are wrongly understood by us , it occasions great Confusion in our Idea's , and also in our Discourse , therefore we are used to define what we mean by our Words , and to declare what we would have to be understood by them . For it often happens , that one Word , signifies many Things , by which means , the Mind may be easily confounded , by applying it sometime to the one , and sometime to the other Idea . For example , The antient Philosophers perceiving that there was something in Man , that was the cause of Nutrition and Augmentation , called it the Soul , which Idea they afterwards attributed to Animals and Plants , as finding the same Faculty in them . And discovering also in Man a Principle of Cogitation , they gave to it likewise the Name of Soul. And so from this Sameness of the Name , they took occasion to confound the Principle of Cogitation with that of Nutrition , and Growth , and took Things wholly different to be one and the same : Which confusion can no otherwise be avoided , than by considering the word Soul , only as a Sound , devoid of any meaning , and afterwards bestowing it upon that Thing alone which Thinketh , Saying , I call that the Soul , which is the Principle of Thinking in us . IX . What the Definition of a Name is . And this is that which commonly is called the Definition of a Name , and is very familiar with Geometricians , by whom it is rightly made to be a kind of Principle . For it is in the Power of Men , to denote a certain Idea by certain Names or Words , and to apply them to what they have a mind . This being the difference between the Definition of a Name , and the Definition of a Thing , that it is not in the power of the Will of Man , to make the Idea contain what they please . For they must needs fall into Error , who going about to define Things , attribute any thing to their Idea's , which they do not contain . As for example , If we deprive the name Parallelogram of its signification , and no longer consider it , as a Figure including Four sides , but consider it only as a naked Sound , or will have it to signifie a Triangle or Figure consisting of Three sides , we may do so , if we please , neither shall we thereby make our selves lyable to Error , as long as we make use of the word Parallelogram only to signifie a Figure contained within Three lines . And therefore we may say ; A Parallelogram hath its Angles , equal to two Right ones , and that the greater Angle in a Parallelogram , is subtended by the greater side , &c. But if retaining the signification of the Word , and its ordinary Idea , which represents to us a Figure , whose opposite sides are Parallel , we should still assert that a Parallelogram is a Figure consisting of Three sides , we should fall into Error ; for then we should not define a Name , but the Thing ; seeing it is a contradiction , that a Figure consisting of Three lines should have its sides Parallel . X. How the Definition of a Name , is distinguish'd from the Definition of a Thing . From hence it follows . First , That the Definition of Names cannot be called in question , because they depend on the will and choice of Man. For it cannot be denied , but that he who defines a Name , may give such a signification to the sound of the Word , as best pleaseth him , and maintain that signification , which he puts upon it . But this cannot be in the Definition of Things , which frequently are controverted , for as much as they may be false , and represent the thing otherwise , than indeed it is . XI . The Definitions of things may be doubtful . In the second place it follows , that since the Definitions of Names cannot be questioned , they are therefore to be lookt upon as Principles ; which cannot by any means belong to the Definitions of Things , they being Propositions , which can be denied by those who find any obscurity in them , and therefore stand in need to be proved , as other Propositions ; neither are they to be taken for granted , except they be self-evident , and partake of the clearness of Axioms . XII . Whence Errors do arise in the common Philosophy . Wherefore they who are taught in the Aristotelean Philosophy , do doubly mistake , First , By confounding the Definition of a Thing , with the Definition of a Name , and attributing to the former , what only belongs to the latter ; for after that they have alledg'd several Definitions , not of Names , but of Things , which are altogether false , and neither express the Essence of Things , nor the Idea's which we Naturally frame from them ; they will needs have us to consider these Definitions , as so many Principles , or Perspicuous Notions , which no Man is able to gainsay ; insomuch that if any one refuse to admit them for Principles , they are incensed , and do not think such a Person fit to be disputed with . XIII . The necessity of Defining Names . Secondly , The common Philosophers are mistaken , in that they seldom or never have recourse to the Definition of Names , to rid them of all obscurity , and to addict them to certain and clear Idea's , but leave them in their confusion and obscurity . Hence it is that the greater part of their Disputations are no better than Contests about Words ; which would be easily removed , if those Words that involve any obscurity were defined , and whatsoever makes their meaning doubtful and uncertain were removed . This will appear more fully by an Example : Philosophers suppose that nothing is more evident in Nature than that Fire is Hot ; but except it be first cleared what we are to understand by Heat , we shall never know , how or in what regard Fire is said to be Hot. By Heat , therefore they do understand either a certain power , wherewith the Fire is endowed , to produce in us the sensation of Heat , and in this case they truly apprehend the thing as it is : Or else by Heat , they apprehend a certain Quality , like to the sensation they perceive , wherein they are mistaken , since that is obscure , neither can it any way be made out how Fire is Hot , after this manner . For tho' it be clear that the cause of that Motion which we experience in our Bodies , be in the Fire , yet have not we the least ground of evidence , that the Fire contains any thing like that which we feel , when we stand near the Fire . XIV . It is not necessary to defin● all Names or Words . But tho' the Definition of Names contributs much towards the clear understanding of Things ; yet it is not necessary to explain all Names by Definitions , because that would be often superfluous , and indeed is utterly impossible . For it is certain that Men have many Idea's that are so distinct , that those who understand the same Language , as soon as they hear the Names of Things , they immediately form the same Idea's . So they who hear those Names Entity or Being , Cogitation , Existence , Certainty , Equality , and such like , do immediatly apprehend the Things that answer to them in their Minds ; and therefore it is superfluous to explain them by Logical Definitions , as being most simple Things , and such as are known of themselves . I said also that it was impossible to define all Names , forasmuch as to the explaining of any Word , we must make use of other Words , to determin the Idea's , to which the Words are addicted , and those Words again stand in need of other Words to explain them , so that it would be necessary to run into infinite . For this Reason we must keep to Primitive Words , and not easily change those which Use hath made to pass current amongst Men. XV. In the use of words we are never to recede from the common received Sense and meaning of them . They are much in the wrong , who when any Word is to be defined , do not consider what Sense Men commonly attribute to it , and that as far as may be , they are never to recede from it . So he that would put the Name of Parallelogram upon a Triangle , would be accounted a Mad-man for his Pains , for contradicting the Etymology of the Word , and running Counter to common use and custom . In which regard the Chymists are greatly to be blamed , who without the least profit thence ensuing , have changed the Names of Things , and assigned others to them , which have no true Affinity at all with those Idea's to which they affix them . Thus by the Name of Sulphur ( Brimstone ) they do not understand that Thing , which the Vulgar know and call by that Name , but a liquid , odorous , oleous and Inflammable Substance , which is the Glue that joyns the Parts of dry Things together : Neither do they by the word Mercury , understand Quicksilver , but a certain most subtil and clear Liquor , of an Acid or Sourish Taste , which readily Penetrates every where , and easily vanisheth away . And by the name of Water they understand another far more copious Liquor , which dissolves Salt , which cannot be dissolved by Sulphur or Mercury . Hence we infer The last Rule of Truth . XVI . The Tenth Rule of Truth . The Names of Things which we use in Philosophizing , must be clear and determinate as to their Signification ; not Obscure or Ambiguous . For seeing that all the Things which we do heedfully Interpret , are delivered by us , in External Expressions , the highest excellency whereof is Perspicuity , it is necessary that we make use of fit and usual Words for the expressing of Things , and take care to give distinct Names to distinct Things . The Second Part of Logick . Concerning the Right Judgment of the Mind ; or Proposition . CHAP. XI . Of Judgment , Absolute and Compared . I. What Judgment is , and that Affirmation and Negation belong to it . HAving thus informed our selves what Idea's are , and how they are distinguish'd from each other , the Order we have set our selves in the beginning of this Treatise of LOGICK , requires that we now speak of their Composition , whence JUDGMENT , or the Second Operation of the Mind , as others call it , doth proceed . And herein consists the whole Sum of our Knowledge ; because when our Mind hath once past a firm and stable Judgment of any thing , it thinks it self arrived to the very Top of Science . To Judge therefore , is nothing else , than to assent to those Things , of which we have clear and distinct Idea's ; or to deny our assent to those things whilst the Idea's that represent them are obscure , and are perceived to be so . And therefore Judgment is a kind of Composition , by which the Mind joyns one Idea with another by Affirmation , or separates it from another by Negation : As when from the Perception of the Sun and Light , he assents that the Sun is Lucid ; or from the Perception of the Moon and Cheese , denies the Moon to be Cheese . II. To Judgment assent or dissent is required . For it is not sufficient to Judgment , to know two Idea's jointly ; but it is necessary , that the one be conceived to be in the other , and that assent be given to Truth as soon as it appears : For an Affirmation and Negation appertain to the Essence of Judgment ; neither can there be any Judgment without Assent or Dissent . Wherefore as long as a Man sticks in doubtful Enunciations , to which the Will doth not yet yield its assent , and being Uncertain , enquires concerning the Truth of them , he cannot be said to Judge , till after a full determination of his Mind he affirms the thing to be , or denies it to be such as he perceives it . III. To the right forming of Judgment , it is first required , that the Understanding precede . To the right Forming of Judgment , it is required , First , That the Understanding do precede , and that the things be known , before that we affirm or deny any thing concerning them ; since we cannot attribute ought to another thing , except we have first perceived them both . Wherefore in every Categorical or Simple Proposition , it behoves us to have a distinct Perception of the Terms , viz. the Subject and the Attribute , before we assent to the Conjunction of them ; in every Hypothetical , of the Connexion of the Antecedent and Consequent ; in a Modal , of the Mode and the Thing said ; in a Disjunctive , of the Repugnance between the Antecedent and the Consequent ; in a Copulative , of their Simulty or Existing at one and the same time . And the same Caution is to be used in refusing our Assent to any Proposition ; seeing that Men for want of this Observance fall into great Errors , and judge preposterously of things . How many are there that judge the Earth to be plain or level ; that the Moon has the Figure of a Dish or Platter ; that the Stars are very Little things , and that the Sun is much less than the Earth ; because they never had a true Perception of any of these things , but trusting to their Infant Prejudices , believe nothing to be True , but what agrees with the report of their Senses . IV. Secondly , we must examine all things anew . Wherefore it is requisite in the next place , for the avoiding of all Mistakes in Judging , to take a firm Resolution , not to admit any of those things for Truth , which formerly we believed such , before we have called them to a fresh and accurate Account , according to the foresaid Rules or Precepts of clear and distinct Perception ; and that we suspend our Judgment , till we be certain of their Truth . For he who withholds his Assent is thereby secured from Error ; and he who assents to what he hath well understood , is so far from being Mistaken , that he embraces and enjoys Truth . V. Thirdly , In passing our Judgment , we are to distinguish between Objects and Occasions . In the Third place , To avoid our mistake in Judging , we must distinguish between the Things and Occasions in which we are to pass our Judgment : For either we are conversant about the Search of Truth , or about the things that belong to Life , and which are considered with relation to Practice . If we consider things under the first respect , we must suspend our Judgment , when they are not fully known by us , that is , when any obscurity or confusion appears in the things we have under Examination . If we consider them the Second way , we need not make use of so great Precaution , especially when the necessity or opportunity of Business doth not allow us sufficient time for an exact Disquisition ; for otherwise we should often let slip an Occasion , before we could resolve our Doubts about the matter . Wherefore in cases where delays are prejudicial , it is best to examine the thing only so far as Time permits , and to embrace what appears for that time clearest and best to us . And having once past our Choice , we are no longer to consider it as Doubtful in reference to Practice ; but as a thing most evident and certain , as if we had been assured of it by a clear and manifest Demonstration . VI. What Compar'd , or Comparative Judgment is . Compared , or Relative Judgment , is between more things , which we refer to another Third thing ; in which , if they agree , they are called the Same ; but if they disagree , Diverse . For Comparison is not the simple Consideration of one thing , to which we Assent or Dissent ; but the Comparing of one thing with another in Quantity or Quality : In Quantity , when we enquire not only of the Dimension , but of the Value , Virtue , or Perfection of a thing ; for from hence comes the Equality and Inequality , Greater and Lesser . For things that are compared together in Quantity , are such as have either the same Quantity one as the other , or a greater or lesser . VII . What things are even or Equal . Things that agree in the same Quantity , are called Even or Equal , because they are compared with respect to something , which is found in the things compared in an Equal Proportion . As at the Equinoxes , the Night is equal to the Day : Hector is equal to Achilles in Bodily Valour , Forasmuch as by the Name of Quantity is not precisely to be understood Mathematical Magnitude , but any Equality or Inequality , whether it be measurable , or not . VIII . What Uneven , or Unequal . What Greater . Things that differ in Quantity , are called Uneven , or Unequal ; and such are either Greater or Lesser . Things Greater , are such as exceed others in Quantity , or which by their Quantity , exceed the Quantity of those things wherewith they are compared . IX . What Lesser . Those things are Lesser , which in Quantity are exceeded by others ; For the Lesser is made use of to set forth the Greater Excellence , Dignity , Number , or Usefulness of the other . Thus Plato is said to be a more Excellent Philosopher than Socrates : A Dog swifter than a Wolf. A Comparison in Quality is , when the Similitude , that is , the Proportion ; or Dissimilitude , that is , the Disproportion of things is consider'd . Where by the Name of Quality , we are not to understand a Physical or Natural , but a Logical Quality ; such as is Affection , Nature , Faculty , Action , Passion , &c. X. What things are Like . Hence those Things are called Like , which agree in Quality ; or which being compared together , are found to have some like Affection or Faculty . As when we compare the Sun and the fix'd Stars , with respect to Light which is found in them both , we say they are like one another . For things compared are not alike in all things , but differ also in many Specialties . But when we compare those parts or respects wherein they agree , from one Like we rightly conclude the other , because the Effects and Adjuncts of like Causes and Subjects are alike , and so on the contrary . XI . What Unlike . Those things are unlike whose Quality is diverse ; or those are diverse Comparates , which differ in Qualities , Actions , and Passions . So , A Wise man is unlike to the Moon ; A Constant man is unlike to a Reed shaken with the Wind. Hence from things that are Unlike , Unlike things are concluded ; because the Effects of Unlike Causes are unlike , as are the Adjuncts of unlike Subjects , and on the contrary . Wherefore because a Reed is easily driven this way and that way by the Wind ; and S. John is not so easily shaken , therefore in this regard , S. John and a Reed are unlike . Here we are to take notice , that the Unlikeness is to be restrained within the bounds of that Quality , wherein the Comparison is made . CHAP. XII . What a Proposition is , and how manifold . I. What things make up a Proposition . A Proposition , or Enunciation , according to Aristotle , is an Oration or Speech , which affirms or denies ; or an Oration , that signifies either true or false . From which Definition it clearly appears , that to every Proposition two Forms at least are required ; the One , of which something is affirmed or denied , which Term is called Subject ; the Other , which is said or denied of another , which Term is called the Attribute : As when I say , God is Existing ; God is the Subject , and Existing the Predicate . II. The word Is , joyns the Predicute with the Subject . But because it is not sufficient to conceive these two Terms , except by our Cogitation they be joyned together , or disjoyned ; the word Is , is the Sign of the Mind 's affirming , that is , of joyning these two Idea's of God and Existing , as agreeing together . But when I say , God is not finite , the word Is , joyned with the Negative Particle Not , imports an Action contrary to Affirmation , on denotes , that we look upon these two Idea's as repugnant ; forasmuch as in the conception of Finiteness something is included , which is contrary to the Nature of God. III. A Proposisition doth not always stand in need of an Attribute , Subject , and something to joyn them both . Yet some times we express Propositions after another manner : As when we say , Charles walketh ; Injustice thrives amongst men ; because under these words , as well the Connecting word Is , as the Predicate are contained : And therefore these Propositions are the same as if one should say , Charles is walking ; Injustice is thriving amonst men : Yea , it is customary with Logicians , as often as the word Is , is used without any Predicate following it , to understand the Predicate to be comprehended under it : For this Proposition , Man is , is resolvable into this other , Man is existing . It matters not therefore whether a Proposition consist of Three words , as Charles is walking , or of Two , as Charles walketh , or One word only , as Ambulo , I walk , the Latin word including all the Parts of a Proposition in it . IV. A Proposition is either Affirmative or Negative . From this Explication of a Proposition it follows , that all Propositions are either Affirmative or Negative : For since the Judgment of our Mind is twofold , viz. Assent and Dissent , Propositions which are the Interpreters of it , must likewise be divided into Affirmative and Negative . Which indeed is the first and chiefest Division of them , as being taken from the Copula or Connecting word it self , or from that Action of the Mind , which either joyns the Attribute with the Subject , or separates it from it . Wherefore concerning the Judgment of an Affirmative and Negative Proposition , let this be . The First Rule . V. The First Rule . That is an Affirmative Proposition in which the Subject and Attribute are joyned , or do agree ; and Negative , in which they are disjoyned , or disagree . VI. Explication of the Rule . For a Thing is then affirmed to be what it is , when the Predicate or Attribute agrees with the Subject , or when it is one and the same thing with it : As when we say , Man is an Animal . But a thing is pronounced not to be , what it is not , when the Attribute differs from the Subject , and agrees not with it : As when we say , Man is not a Beast , because Man is declared not to be such , as indeed he is not . This Division of a Proposition is according to Quality ; because when any one asks , of what kind the Proposition is , it is answered , Affirmative or Negative . VII . In an Affirmative Proposition the Attribute is restrained . We are to observe , that in an Affirmative Proposition the Attribute is to be taken in all its Comprehension , but not in all its Latitude . As when I say , Every Circle is a Figure ; whatsoever is contained in the Idea or Essence of a Figure , the same is affirmed of a Circle ; but yet the word Figure is not taken in its whole Latitude , for it is of much larger extent than that of Circle ; and therefore this Proposition cannot be simply converted in saying , Every Figure is a Circle . Wherefore in this Proposition the Attribute is restrained by the Subject , and reacheth no farther than the Subject doth . VIII . But not in a Negative . But the case is different in a Negative Proposition ; as , No Circle is a Square : For here the Attribute is taken in its whole Latitude ; so as that we may say as well , that No Square is a Circle , and all Squares must be denied of a Circle . But the Attribute is not taken according to the whole Comprehension of its Idea , as if all the Attributes of a Square , were to be denied of a Circle : For a Circle and Square agree in the Idea or Notion of Figure . IX . There are Propositions Universal , Particular and Singular . There is another Distinction between Propositions , which ariseth from the Subjects , that go before the Copular according to which they are called , Universal , Particular , or Singular . An Universal Proposition is that to whose Subject a Note of Universality is annexed ; such as Every or All , None : As , Every Man has a Soul ; because Man is a common Term , which is taken in its whole Latiude . But when a common Term is only taken in an undeterminate part of its Extension , with these Notes ; Some , Some Body , &c. then it constitutes a Particular Proposition , whether it Affirm , as Some Lovers are miserable ; or deny as , Some Courtiers are unjust . But if the Subject of the Proposition be Particular , it makes a Singular Proposition , as Charles . I. now Reigneth in England . And this Distribution of a Proposition , into Universal , Particular and Singular , is said to be made with respect to Quantity , because when any one asks Quanta ( of what extent ) the Proposition is , we fitly answer , that it is Universal , Particular or Singular . The Second Rule . Concerning the Judgment of an Vniversal , Particular and Singular Proposition . X. The Second Rule . The value of these Propositions is to be Estimated , from the Extension and Limitation of the Subject and Attribute . XI . Universality is towfold , Metaphysical and Moral . That we may the more exactly distinguish Universal Propositions from Particular , we are to take notice of a two-fold Universality , the one Metaphysical , the other Moral . Metaphysical Universality , is when a thing is taken according to its whole Extension , without any Exception : As , Every Body is Extended : For this admits no Exception . Moral Universality is that which hath Exception ; because in Moral Things , it is only minded whether things be so for the most part , as they are declared to be . As if one should say , All Singers have this fault , that they never will be entreated to Sing , but when not entreated , they can never leave Singing : Because it is sufficient if it commonly be so . For seeing that such Propositions as these , are not so general but that they admit of Exception , nothing can be rigorously infer'd from them ; since it may be false of this or the other particular Singer , that he will never be Entreated to Sing , and never cease Singing when not Entreated . XII . Propositions of the Singulars comprehended under one Genus . There are other Propositions that are Universal de Generibus Singulorum , but not de Singulis Generum , that is , of all the Species contained under one Genus ; but not of all the Particulars of the same kind : As , when it is said that all living Creatures were saved in the Ark of Noah , which is not so to be understood , as if all , of all the Species of Animals had been shut up in the Ark , in the time of the Deluge ; but only that some of all kinds were there saved . XIII . Propositions Indefinite . Besides the Universal , Particular and Singular Propositions , there are those which are called Indefinite , which tho' they have an Universal Subject ; Yet the same is taken neither Universally nor Particularly , but Indeterminately : As , Man is a Living Creature . A Triangle has Three Angles equal to Two Right ones . Because no Universal Note as Every , None , or Particular , as Some , Some one , is put before Man and Triangle . XIV . Of Propositions , some are Simple and others Compound . A Proposition in general is divided into Simple and Compound . That is a Simple Proposition , which consists only of one Subject and Predicate : As , Man is a Living Creature . A Loadstone draws Iron . Compound Propositions are such as consist of more Subjects and Predicats : As , Peter and John , went up at the ninth Hour of Prayer . Where this Attribute went up , is not affirmed of one Subject , but of more than one , viz. Peter and John. And such Propositions as these are Equivalent to two or more Propositions ; for if this Proposition were to be explained , we must do it by these two Propositions , Peter went up , John went up . XV. Words Adjective make a Complex or Compound Term. Words Adjective , or Connotative , make a Complex Term , whether they be put alone , or joyn'd with Substantives . For the Word Wise , doth confusedly signifie the thing in which Wisdom is ; but denotes Wisdom distinctly . And when I say , a Wise Man , in these two Words a kind of Proposition is contained : For it comes to the same thing whether I say , a Wise Man , or a Man that is Wise . Wherefore every Adjective or Connotative Term , doth include a Proposition , which since it accedes from without , to the Proposition called Principal , it may be rightly called an Adjunct , or Incident Proposition . The Third Rule . Of the Judgment of a Simple and Compound Proposition . XVI . The Third Rule . The Simplicity or Composition of a Proposition is taken from the Combination or Disjunction of the Terms , that is , of the Subject and Predicate , whether the same be single or manifold . XVII . Compound Propositions are manyfold . Compound Propositions are of two kinds ; for some are such in which the Composition is Evident ; others again in which it is more hid , which the Logicians therefore call Exponibiles : Of the first sort are Propositions , Copulative , Disjunctive , Conditional , Causal , Relative , and Discretive . XVIII . Of Compound Propositions some are Copulative . Copulative Propositions are such as include more Subjects and Predicates , joyned by an Affirmative or Negative Conjunction . As when I say , the Sun and Moon Illuminate the Earth ; for here I joyn Sun and Moon together , and affirm of them both , that they Illuminate the Earth . For the parts of a Copulative Proposition , are entire simple Propositions , which have another Predicate or Subject . XIX . Some Disjunctive . Disjunctive Propositions are those in which the Disjunctive Note or , either , whether , and the like is found ; As , a Man either has , or has not a Child . Either the Earth is mov'd about the Sun , or the Sun about the Earth . The truth of which Propositions , depends upon the necessary Opposition of the Parts , between which no Medium can be assigned . And therefore this Disjunctive Proposition , It is either a Man , or an Animal , is false , because the Parts are not opposite to each other . As is likewise this , It is either Peace or War , because there may be a Truce or Cessation of Arms , which is a Mean between War and Peace . So that to the absolute Truth of Disjunctive Propositions , it is necessary that they have no Mean at all ; but to their being Morally true it is sufficient , if commonly they have none . XX. Others Conditional . Conditional Propositions consist of two Propositions , joyned by the Conditional If , as ; If God be merciful , he will forgive Sinners : If that be a Triangle , it hath three Angles equal to two Right ones . The First , In which the Conditional is put , is called the Antecedent , and the other the Consequent . And it is to be noted , that the Truth of an Hypothetical or Conditional Proposition , doth not consist in the Truth of the Antecedent or Consequent , but in the Union and Knitting of them both by the Conditional If ; for a Conditional Proposition may be true , tho' both its Parts be false ; as If a Tree walks it hath Feet . XXI . Others Causal . Causal Propositions , are such as contain two Propositions , joyned by the Causal Conjunctions Because , That ; As , A Covetous Man loves no Body , because he confides only in himself . Kings are often raised to a Throne , that they may be miserable . For to the Truth of such Propositions as these it is requisit , that the one of them be the cause of the other , and therefore both of them must be True : For what is false hath no Cause , neither can it be the Cause of another thing . XXII . Others Relative . Relative Propositions , are known by some Note of Comparison ; as Where the Treasure is , there is the Heart also . A Woman is so far to be esteemed , as she is Vertuous . XXIII . Others Discretive . Lastly , Discretive Propositions , are such in which we frame different Judgments , and determine the said Difference by such Signs as these , But , Yet ; As , Tho' GOD be Merciful , yet he is Just . The beloved thing may be separated from a Lover , but Love not . The Truth of these depends on the Truth of their Parts , and of the separation which is put between them . Tho' both the Parts were true , yet because there is no opposition between them , this would be a ridiculous Proposition : A Covetous Man Loves Riches , and yet cannot endure that any one should be Liberal towards the Poor . A Discretive is the only Proposition that is excluded from the Composition of a Syllogism . XXIV . Of Propositions some are Subaltern , Contrary , Subcontrary , and Contradictory . Amongst Propositions that have the same Terms , and disposed in the same Order , but modified with various Quantity or Quality , are reckon'd up the Subaltern , Contrary , Subcontrary and Contradictory . Subaltern Propositions are an Universal , and particular of the same Quality : As , Every Circle is a Figure ; some one Circle is a Figure . Contrary , are two Universal Propositions of divers Qualities : As , Every Man is Rich , No Man is Rich ; which may be both false . Subcontrary Propositions , are two particulars of divers Qualities ; As , Some one Man is a Physician ; Some one Man is no Physician . Contradictory are such as differ in Quantity as well as Quality ; As , Every Man is a Living Creature , Some one Man is no Living Creature : Which cannot both of them be true , nor both false . CHAP. XIII . Concerning the Truth and Falshood of Propositions . I. Truth is found in three things T Is commonly said that Truth and Falshood are found in these three Things ; viz. In the Mind , in Things , and in Propositions . Truth is in the Mind , as in its Subject : So things are said to be true , in the Divine Intellect , because they had there from Eternity , their objective and known Being : Which does not properly place any Eternity in them , but in God. Things are said to be True , when they have such an Essence as they ought to have , or when they comport with their Idea ; and those false which disagree with their Definition or Essence . So GOD answers to that Idea , which he himself hath of a Being , Infinite , Immense , Eternal , &c. But the Sun is no true God , because it differs from that form of Cogitation which we have concerning God. II. Wherein the Truth and Falshood of a Proposition doth consist . The Truth of a Proposition , consists in this , that it pronounceth a Thing to be such as it is : As when I say , the Earth is Round , it is a true Proposition , because I Affirm that of the Earth , which belongs to it , viz. a Round Figure . So likewise when I say , A Beast is not Rational , it is a true Proposition , because I remove from a Brute what does not belong to it . Wherefore Truth is said to be the Property of a Proposition , and to which it peculiarly doth belong . For since a Proposition is either Affirmative or Negative , that wherein the Attribute is affirmed to be in the Subject , is True , that is , conformable to the Object , if it be really in it ; and False if it be not in it . And so a Negative Proposition , in which the Attribute is denied to be in the Subject , is True if it be not in it ; but False if it be in it . III. Truth is either objective or Subjective , which is also called Formal . The Truth which consists in the Connexion or dissent of both extreams , is called Objective ; but Subjective or Formal Truth , is the Judgment or Act of the Mind , by which the extreams of a Proposition are joyned together ; or disjoyned as far as the Judgment agrees with the thing it self . IV. One and the same Proposition cannot be true and false at one and the same time . The same Proposition cannot be both True and False , for then Contradictories would exist together : For suppose some Affirmative Proposition ; if it be true , the Attribute agrees with the Subject ; if False , it doth not agree . And therefore , if we should suppose it to be True and False at once , then must it at the same time agree and not agree . Now it is a contradiction that the same thing should agree and disagree with the same thing ; or that the same Attribute should be , and not be in the same Subject . It follows also , that we cannot at the same time Assent to , and Dissent from the same thing , because both those Judgments are opposite , and that the one excludes the other : Which would happen , if the same Affirmative Proposition , were at the same time True and False ; for we should assent to it , if the Attribute did agree with the Subject ; and should deny our assent , if it did not agree ; which plainly implies a Contradiction . V. An Objection answered . If you object , this Copulative Proposition , Claudius and Theophilus Gaze upon the Stars , when only one of them beholds the Stars , will be both True and False ; seeing it is True , that the one beholds the Stars , and the other not . I answer , that this Proposition to speak absolutely is False , forasmuch as Copulative Propositions import a Sameness of Time , and their Truth depends on both extremes , so that if one of them doth not agree with its Attribute , it renders the Proposition False . As , suppose any one should say , A Good Life and Riches are necessary to Salvation , this Proposition would be False , because that tho' a Good Life be necessary to Salvation , yet Riches are not . But if we take this Proposition without including any Sameness of time , then it will furnish us with two Mental Propositions , and so it will be True , Claudius Gazeth on the Stars , and Theophilus does not ; and on the contrary . VI. Propositions necessarely true , and necessarily false . Tho' it be necessary that all Propositions be either True or False , yet are not all equally true and certain : Or which is the same , the Attributes do not agree with the Subjects in the like degree of necessity . For some Attributes are after that manner in their Subjects , that their Subjects cannot be without them : As Extension , with respect to Bodily Substance ; Cogitation , in reference to the Soul : And therefore this Proposition , A Body is an extended Substance ; A Soul is a thinking Substance , are called necessary , because their Predicats and Subjects are united by an Indissoluble Band. Whereas other Attributes are at such a distance from those Subjects , that its impossible for them to agree with them , as a Stone with relation to Man ; Unevenness with respect to the Number Two ; and therefore these Propositions , Man is a Stone ; The Number Two is Uneven , are said to be necessarily false ; because there is a manifest Repugnance , that the Predicate Stone should agree with Man , and Unevenness with the Number Two. Both these kind of Propositions , by reason of the immutable Consent or Dissent of their Terms , are said to be of Eternal Truth . The Fourth Rule . Concerning the Judgment , or a Proposition necessarily true or false . VII . The Fourth Rule . That Proposition , whether Affirmative or Negative , is true , wherein things to be joyned , because of the immediate and indissoluble Band of the Terms , that is , of the Subject and Predicate , are conjoyned universally of themselves , and reciprocally ; or are disjoyned , because of the incompossibility or repugnancy of their Terms . And on the other hand , That Proposition is false , wherein Things to be joyned are disjoyned , and things Dissentaneous conjoyned . VIII . The Rule explained . For seeing that Objective Truth consists in the Agreement or disagreement of both Extreams , viz. of the Subject and Attribute , it must follow that that Proposition in which things consentaneous are Conjoyned , because of their indissoluble Connexion , is necessarily true : As , Man is a living Creature ; because Man , without a living Creature , cannot be . And , Man is not a Beast , is necessarily true ; because it is repugnant that Man should partake of the Nature of a Beast . In like manner these Propositions , Man is not a living Creature , and Man is a Beast , are necessarily false ; because it is a contradiction that living Creature should be separate from Man , or that Man should be a Beast . The Fifth Rule . IX . The Fifth Rule . That Proposition , whether Affirmative or Negative , is contingently true , wherein the Subject and Attribute do only sometimes agree , or not agree , because of their separable connexion ; and that false , in which the thing is otherwise exprest than it is , whether it be propounded Affirmatively , by conjoyning things which are to be disjoyned ; or Negatively by disjoyning things to be conjoyned . So this Proposition , The Air is enlightned , or Man runs , is only contingently true ; because the Subject in the first Proposition , viz. Air , may be without its Attribute , as being but sometimes enlightned : And the Subject in the second Proposition , viz. Man , may likewise be without its Attribute , seeing it is but sometimes that he Runs . But if any one , whilst the Air is enlightned , should say the Air is not enlightned , the Proposition will be false ; because he separates Light from the Air , which then agrees to it : Or if when it is dark , he should say , The Air is Light ; because he joyns things that ought to be disjoyned . X. What Opinion , Science and Error is . Hence it appears , what is a probable Proposition and Opinion , as also what Science and Error is . For seeing that the probability of a Proposition consists in this , that it approacheth more to Evidence than Obscurity , that Proposition is to be accounted probable to which the Mind assents , because of the likelyhood there is of the Attributes agreeing with the Subject , or on the contrary , of the Attributes disagreeing with the Subject . Whereas Science is , when the Truth of a thing is certainly and evidently perceived by Reason . For since the certainty of a Proposition depends of its Evidence , that Proposition is accounted certain to which the Mind firmly adheres , and whose Attribute it judges doth necessarily agree with the Subject . And lastly , Error is , when the Mind assents to a false Proposition for a false Reason , which it apprehends to be a true one . XI . Contingent Propositions , are disjunctively necessarily true or false . There are other Propositions , which tho' they be neither necessarily true nor false , yet must needs be either true or false disjunctively ; such are those Propositions whose Predicats do only contingently agree with their Subjects , and may be absent or separate from them : As , Rich , Powerful , Married , &c. with respect to Man. Wherefore these Propositions , Croesus is rich ; Caligula is powerful ; Thomas is a Husband ; are said to be Contingent , that is , they are true in such a manner , as that they may be false ; and yet it is necessary for them to be either true or false separately : Because every Proposition , in contingent matter , is either true or false disjunctively , that is , cannot be deny'd to be either true or false . It may indeed be deny'd , that such a Proposition is necessarily true or necessarily false ; but it cannot be deny'd , but that it must be either necessarily true , or necessarily false disjunctively . XII . A true Contingent Proposition , cannot be changed into a false one . A true Proposition in Contingent Matter , cannot be changed into a false one . Which is thus proved ; because if this Proposition , for Example , John walketh , be true , tho' but in one instant of time , yet it cannot be said to be false in that very instant wherein it is true : But it is true at one instant ; therefore for that instant it cannot be false . Moreover , this Proposition considers John walking such a time , at which time wherein he is supposed to walk , it is always true ; or if it signifie another time , in which it may be John doth not walk , in that case the Object is changed , and therefore is not the same , but another Proposition . XIII . Objection . If you say , That during the Time wherein this Proposition , John walks , is pronounc'd , John , who before walked , may cease from motion , and rest ; and thus this Proposition , John walks , which before was true , will be changed into a false one . XIV . Answer . To this I answer , That tho' at that time wherein this Proposition , John walks , is pronounced , John may cease to walk ; yet the Proposition continues true notwithstanding , if once it was true : Because it either determines the time wherein he walks , or that wherein he did walk , and in this respect the Proposition is true ; or else absolutely denotes some difference of time in reference to which it is verified , and therefore with respect to that Time wherein he hath walked , is true . XV. Propositions concerning a future Contingency , have a determinate truth or falshood . The Difficulty is greater concerning the truth of Propositions of a future Contingent : For it is evident enough , that of opposit Propositions of the Present time , one is true and the other false : As , Peter speaks , and Peter doth not speak : But it may be doubted , whether the same truth be found in those Propositions that respect the Future time ; As , Peter will speak to Morrow ; Peter will not speak to Morrow . But it seems certain , that Propositions of a future Contingent , have a determinate truth or falsity : For supposing Peter to exist , these two Propositions , He shall speak , He shall not speak , are contradictory : Now as two Contradictories cannot be together , so it is impossible they should be both of them true , and therefore one or other must be true only ; and therefore Peter will either speak , or not speak ; if he does , the Proposition is true ; if he does not speak , it is false : So that one of them is determinately true , and the other false . Again , such as are the Propositions of the Present or Past time , with respect to Truth , or Falshood , such are the Propositions of the Future : But one of these is determinately true , and the other false ; Therefore , &c. The Major is clear : For he that pronounceth that a thing will be , and that it will not be , doth speak as true , as he who pronounceth that a thing is , and that it is not ; or that a thing was , or that it was not , because it is necessary that one of them must come to pass . XVI . Yet is is not necessary , that it be known which of them is true . Neither doth it hinder , that we know not which of the Propositions be true , and which false : Because the Truth of Propositions doth not depend upon its being known , or unknown ; but upon the Being , or not Being of the thing . Besides , it is certain , that GOD knows which of them is true , and that he can reveal the same to whomsover he pleaseth . CHAP. XIV . Of Division , and Definition . I. Transition , or Connexion of the following Matter , with what goes before . HAving explained the Nature of Propositions , and clearly and distinctly unfolded their Affections of Affirmation and Negation , Universality and Particularity , Truth and Falshood ; it only now remains , that we add something concerning Distribution and Definition , which are accounted the most Scientifical , or conducive to Science of all other Propositions ; and are nothing else , but Tokens or Instances of a clear and distinct Perception ; or , if you will , they are Primary Enunciations , Axioms of solid Judgment , and Maxims worthy of all belief . II. What Division is . DIVISION therefore is the Distribution of some Whole into Parts ; As , of a Living Creature into Man and Beast ; of Number into Even and Uneven . Now Division will not a little conduce to our acquiring a clear and distinct Knowledge of Things , if so be we know how dexterously to make use of it . For seeing that almost in every Object there are many things to be considered , which because of the Difficulties wherewith they are involved , cannot be clearly apprehended by us ; it is needful to resolve them into Parts , that so having by Division removed all Confusion , the Particulars may more clearly appear such as they are . III. Division is either Real , or Mental . Division is twofold , the one Real , the other Mental : The Real is , whereby a Whole is really and indeed divided into Parts ; as a House into the Roof , Walls , Foundation , &c. of which it consists . A Mental Division is , when we divide a Whole only by the help of our Understanding : As when we consider in GOD , his Goodness , Omnipotence , Eternity . For it doth not always follow , that the thing which our Mind distributes into Parts , is compounded and divisible ; but that only our Conception of it is compounded , and unable to understand so many Attributes under one and the same Notion . IV. The Primary Division of Genus and Species ; and of an Integral , and Essential Whole . Division is manifold , according to the threefold kind of a Whole and its Parts . For it is either of the Whole Genus into its inferiour Species , or of the Species into its Individuals : As the Division of Substance into Mind and Body ; of Mind , into an Angel , or Man's Soul : The other is of an Integral Whole into its Parts ; which is properly to be called Partition : As the Division of the Body of Man into Head , Teeth , Hands , and Arms. The third and last , is the Division of an Essential into its Essential Parts ; as the division of Man into Mind and Body . And these Three are called Primary Divisions . V. The Difference between the Division of a Genus into Species , and of a Whole into its Members . There is this difference between the two former Divisions : In the Division of a Genus into Species , and of a Species into Individuals ; the thing Divided may in the Nominative Case be predicated , of the several Parts that divide it : As when Living Creature is divided into Man and Beast , Living Creature is exprest in the Nominative of Man and Beast ; as Man is a Living Creature ; a Beast is a Living Creature . But in the Division of an Integral into its Members , the thing divided cannot be predicated of the Dividing Members , but in an Oblique case ; as when a Body is divided into Head , Breast , Belly , &c. it cannot be pronounced of the Parts , but in an Oblique : For we cannot say , the Head is the Body , the Belly is the Body , but part of the Body . And the reason of this difference is , because the whole Essence of the Genus is included in the Species , whereas the Nature of the Whole is not in every Part. VI. The Secondary Division of an Accident into Subjects , or contrariwise . The other Divisions are called Secondary ; as a Division of an Accident into the Subjects , in which it is found . As if we should say of the things that are moved , one is the Earth , another is the Moon , &c. A Second , is the division of a Subject into its Accidents ; as when a Subject is ranged or distributed according to its Accidents . As for Example , Some men are Learned , others Ignorant ; some Good , and others Wicked . The Third , of an Accident into its Accidents ; by which an Accident is divided , not by its own Differences , but by other Accidents of a different kind : As when we say of White things , some are hard , others soft , &c. VII . Conditions of a good Division . The First . Moreover , there are some Conditions required to the constituting of a right Division . First , That all and every one of its Parts be exactly enumerated , without omitting any that belong to it ; so that the Dividing Members may exhaust the Divided Whole , and neither be more extended or contracted than it : As , Even , and Uneven , do comprehend the whole extent of this Term , Number , seeing there is no Number which is not in it self either Even , or Uneven . VIII . The Second . The Second is , That both parts of the Division , be as far as may be expressed in positive Terms . For the Attributes of a thing that is distributed , may be better understood by Positive Terms , than by Negative . I add , as far as may be , because it sometimes happens , that the Positive Thing wants a Positive Name , and so we are forced to use a Negative in the dividing of it : As when we divide Living Creature into Rational and Irrational : Or Substance into Material and Immaterial . IX . The Third . The Third Condition is , That the Whole be distributed into its nearest Parts : According to this Rule , it would not be well done to divide Substance into Rational and Irrational ; because these are not immediately contained under Substance , but under Living Creature . The Sixth Rule . Of the Judgment of Distribution . X. The Sixth Rule . That Distribution or Division is the most perfect of all , which doth honestly and equally divide a Whole into its Parts ; whether it be a Genus into Species , or an Integral into its dividing Members , or a Subject with respect to its Accidents , or an Accident into the Subject , to which by the Right of Division they belong . XI . Explication of the Rule . Thus the most perfect Distribution of a Genus is , when all its Species are Enumerated : As if one should say of Living Creatures , some Walk , others Fly , others Swim , others Creep , and others are Plant-Animals . An Integral Whole is well divided , when all the Parts that constitute it are instanc'd : As the Parts of a Man are , Head , Breast , Belly , Arms , Legs , &c. That is a perfect Distribution of a Subject , with respect to its Adjuncts , when the Adjuncts are reduc'd to certain Heads , and these again subdivided into others : As when we say , In Man there are some Adjuncts of the Soul , and others of the Body ; those of the Soul , are Knowledge , Virtue , &c. those of the Body are Health , Beauty , Tallness , Strength , &c. XII . What a Definition is , and of what Parts it consists . DEFINITION is that which manifests the Nature of Things , shewing why they are , and how they are distinguisht from others . There are two things principally that constitute a Definition , Genus and Difference . By the first we understand the agreeableness which the Thing Defined hath with others , that are of the like nature with it . By the Difference we are informed , how it differs from the same , and what Rank it keeps amongst Real Beings . As for Example , when we define Man to be a Reasonable Living Creature ; by a Living Creature which is the next Genus of Man , we understand something that is common to other things like unto us , viz. the Beasts . And by Reasonable , which is the Difference , we clearly perceive our Distinction from them ; forasmuch as no Beasts are partakers of Reason . Definition therefore is that , which by exhibiting the Essential Parts of the Thing Defined , expresseth its Nature ; as in the foregoing Example . XIII . In Definitions we must make use of the nearest Genus . We are to observe , that every Genus is not sufficient to lay open the Nature of a Thing , but the Nearest only : Partly , because it contains all the Genera above it , so that by expressing it we include all the rest : For he that affirms Man to be an Animal , doth consequently affirm him to be Living , Corporeal and a Substance , and whatsoever else can be imagined higher . Partly , because there is no other Genus can more fitly be joyned with the Specifical Difference , than the nearest , nor which doth more correspond with it . XIV . Of Definitions some are Essential , others Accidental . Amongst Definitions some are Essential , which properly deserve the Name of Definition ; and are those which are explained by their Essential Degrees . By Essential Degrees , I mean Essential Attributes , which constitute the Nature or Essence of a thing . And these are only Genus and Difference , as , Animal and Reasonable with respect to Man. Other Definitions are Accidental and less exact , which express the thing by some Properties or External Causes , as when we define Man , to be a Creature made after the likeness of God. For tho' Property be an Essential Attribute , yet not in that Sense as if it did constitute the Essence or Nature of a Thing , but because it immediately follows the Nature of a thing already constituted : As , Partition and Mobility with relation to a Body . Wherefore the first Definition is called a Perfect Definition , because it consists only of Causes that do constitute the Essence , and by them doth most fully and perfectly lay open the Nature of the thing : Whereas the second Definition is called imperfect , or a Description , because it defines and explains the Thing by other ways , than by its Causes . XV. What things are required to a p●rfect Definition . Yet we are not to think , that all things that are objected to the Mind , may be comprehended in a Definition ; but it is required , that the Thing which is to be defined be One , that is of one Essence ; for those Things which involve a manyfold . Nature , cannot be manifested by a Genus and Difference . The Second is , That it be Universal ; for seeing that Definition is a Declaration of the Nature of a Thing , it is necessary that we divest it of all particular Circumstances , that it may be viewed such as it is . Thirdly , No Universal Nature but a Species can be exactly defined ; and that because nothing but a Species can consist of a Genus and Difference ; and therefore seeing that the Supream Genus does want them , it follows that the Things which are defined must be either Species of the lowest Rank , or Intermediate : Which also will but be obscurely defined , without their immediate Genus and nearest Difference . XVI ▪ Rules of a right Definition . The First There are Rules and Precepts of a right Definition . First , That the Definition must be of the same extent with the Thing defined , and agree to all those things which the Thing defined agrees with . As for Example , because Animal agrees to a Man , therefore a Corporeal Substance endowed with Life , Sense and Motion , which is the Definition of an Animal , must agree to Man also . XVII . The Second Secondly , That nothing be wanting or redounding in the Definition , but that only those Words be made use of , that are necessary for the explaining of its Nature : Wherefore this Definition of a Man , That he is a Reasonable , Mortal Animal , is Superfluous , because the Word Mortal is not needful to the Definition of a Man. The Third . The Third , That the Definition consist of that which is more known : For seeing that a Definition is declarative of the Essence , it must therefore employ clearer Terms ; lest we should be guilty of endeavouring to explain an unknown thing , by that which is more unknown , and so instead of attaining a clear and distinct Perception , should fall into Obscurity and Confusion . Wherefore the common Definition of time , that it is , The Number or Measure of Motion , cannot be good , seeing it is evident , or apparent , that Time doth as well Measure Rest , as Motion , since we say , as well that a thing hath rested so long , as that it hath been in Motion for that time . Booke 1. Part 1. Chap 12. G. Freman Inv. I. Kip Sculp . To the Rt. Worshipfull Sr. William Thomson Knight , their Majesties Sergeant at Law , only Son and Heyre of Henry Thomson of Hollin Hall near Rippon in yorkshire Gent , by Elizabeth Daughter and Coheyre of Sr. Henry Blencow , of Blencow in Cumberland Knight . This Plate is humbly Dedicated , by Richard Blome . The Seventh Rule . Concerning the Judgment of Definition . XIX . The Seveath Rule . That Definition is the most perfect and consummate of all others , which defines the Thing by its Essential Attributes , or constituent causes of its Nature and Essence . As if one should define the Soul to be a Cogitating Substance , or a Body to be a Substance consisting of three Dimensions . Because Substance as the Genus doth constitute the Soul and Body ; and Cogitation as the Difference , distinguisheth the Soul from the Body ; As Extension in Length , Breadth and Depth , doth difference the Body from the Soul : Neither is there any thing else required to the understanding of them both . The Third Part of Logick . Concerning the Minds Ratiocination , Syllogism . CHAP. XV. Of Reasoning or Argumentation . I. What it is to Reason or Discourse HAving spoken of Idea's which represent Substance , and their Modes , and concerning the Judgment and Axioms which arise from their Connexion , it now remains to explain what Reasoning or Ratiocination is , or that Judgment , by which from one Axiom , another is gathered or inferred . For to Reason is nothing else than from a thing known to derive the Knowledge of another : And Reasoning is nothing else , than the Knowledge of one thing deduc'd from the Knowledge of another : As when a Man infers the Heaven to be extended , because all Bodies are extended . And therefore this Judgment is called Dianoetick or Discursive , because the Mind by it runs from one thing to another , and from the Antecedent is lead to the Consequent . II. What it is that Argumentation superadds to Judgment . Wherefore as Judgment , or the second Operation of the Mind , superadds to the first , which is Perception , Assertion , that is , Assent or Adhesion to Truth : So Ratiocination adds to them both , Deduction , Illation , &c. III. What thingsare to be minded in Discourse . In every Argumentation there are two Things chiefly to be minded , the Question it self , that is propounded , and the Argument or Reason that proves the same , or which confirms that which is doubtful , by those things that are certain and evident , and from the Question produceth an undoubted Conclusion . Accordingly in every Argumentation there are two things , that which infers , and that which is inferr'd ; that which is gathered , and that from whence it is gathered , howsoever these parts may be disposed or exprest . IV. Ratiocination contains two Parts . Hence it is that every Argumentation consists of two Parts , viz. of an Antecedent and Consequent , or the Part inferring and that which is inferr'd . That goes before for the confirming of something else ; this follows and is gathered from the former : As , when I say , An Angel is Immaterial ; and therefore is Indivisible . For the first Part , viz. An Angel is Immaterial , is the Antecedent , and the other , An Angel is Indivisible is the Consequent : And the word Therefore is the Sign of the Inference , or formal Consecution . V. The Premisses in is be more known thar . the Conclusion . It is requisit to the Notion of an Antecedent , from which a certain Conclusion may be deduced , that it be better known and more evident to us ; for otherwise it will not conduce to that which we would infer thence . For the Order of Science requires , that beginning from the Easiest things , we proceed by degrees to those which are more difficult to be known . Wherefore , to discourse readily , it is needful that we have ready at hand a Stock of many Axioms , Springing from the Complexion of the Things we have clearly and distinctly conceived , that may serve us instead of Principles , and by whose helps we may arrive to the knowledge of things more abstruse . For we must not promiscuously make use of any known and certain Propositions to infer any thing ; but it is requisit that between them there be some Connexions by means whereof , this rather than any thing else may be gathered or inferr'd from it . Because there is a Consequence assigned to every Argumentation , yea a necessity of Consequence , which doth not only depend on the Order of Knowledge , but also on the Natural Connexion of the Things that are to be known . VI. Reasonings or Argumentations differs in Truth . All Argumentations have not the same force ; for seeing that the Judgments of which they are compounded , have not the same Connexion , they must needs according to the variety of Propositions , produce various kinds of Reasoning . For Consequences that are deduc'd from Contingent Premisses , cannot have so great Truth and Certainty as those , which are inferr'd from Necessary Premisses , and which cannot be otherwise . By Example , this Proposition , Sempronia Loves her Childeren , deduced from this Antecedent , every Mother Loves her Childeren , differs from this , Peter is an Animal , which is deduced from this Antecedent , A Man is an Animal : Because the certainty we have that a Man is an Animal , is Metyphysical ; Seeing we cannot conceive a Man any otherwise . And therefore this Proposition , A Man is an Animal , is so True , that it can never be false : Whereas the certainty we have , that Mothers Love their Childeren , is only Moral , since it can happen that some Women may not Love their Children . VII The Definition of an Argumentation in general . An Argumentation in general , is a Speech wherein from certain Propositions expressly or tacitly premised , An other Proposition distinct from those premisses is necessarily inferred , by Reason of the due Disposition of them . VIII . What the Major Preposition is . If there be just three Propositions in the Argumentation , The first is called the Major , because in it the Major Term is disposed with the Mean or Medium . And by some it is called only The Proposition , by way of Excellence , because it propounds the Foundation of the whole Argumentation . IX . What the Minor is . The Second is called the Minor , in which the Minor Term is disposed with the Medium . It is by some called Assumption , because it is assum'd or taken in as a help , to infer the Third , or Conclusion . X. What the Conclusion is . The Third is called Conclusion , in which the Minor and Major Terms are disposed . And is by some termed the Question , because it contains that whose Truth was enquired after , as also the Inference or Consequence , because it is inferr'd and follows from what went before , and that by the illative Conjunction Therefore , &c. XI . The two Propositions must go before in every 〈◊〉 . The two first Propositions are called Premisses , because they must Precede the Conclusion , at least in our Conception , in as much as it necessarily follows from them ; because it is impossible , supposing the Truth of the Premisses , that the Conclusion should not be true . Yet it is not necessary , that in every Argumentation the Premisses should be expressed , since frequently one alone is sufficient , to make the Understanding , tho' somewhat confusedly , to conceive both . For he who from this Antecedent , Every Stone is a Body , deduceth this Consequence , A Diamond is a Body , had a confused Knowledge thereof in the Antecedent , wherein it is implicitly contained . And he that from this Proposition , A Body is a Substance , infers , that A Diamond is a Substance , by knowing it to be a Body , knows it to be a Substance . XII . In every Argumenmentation are found three Idea's . Every Argumentation consists of three Idea's ; the Minor Extream , or Idea , which is the Subject of the Question , or Conclusion , and is also called the Minor Term ; because the Subject is of less extent than the Predicat : The Major Extream , or Idea , which is the Predicat , and which is also called the Major Term , because it is of larger extent than the Subject : And the Mean , or Medium , which is twice put in the Premisses , and is that which joyns both Idea's together ; as in this Argumentation : Every Intellectual Substance is Cogitative , The Mind is an Intellectual Substance ; Therefore the Mind is Cogitative . Here Intellectual Substance is the Middle Term ; Cogitative , the Major Extream ; and Mind , the Minor Extream . XIII . Why there are three Idea's required in every Argumentatation . The Reason why these Three are required in every Argumentation is hinted by Aristotle , when he saith , That we meet with Three things in every Science , or Demonstration , viz. the Subject , of which the Attribute is demonstrated : The Property it self , or Attribute , which agrees with the Subject ; and the Reason , or Principle , which makes out this Agreement of the Affection with the Subject . So that the Subject , of which the Demonstration is made , is the Less Extream ; the Attribute , or Affection , which is prov'd , the Greater Extream ; and the Common Term , wherewith the Subject and Attribute are joyned together , is the Argument , or Middle Term. XIV . The matter explained by an Example . For Example : This Question is propounded to be explained , whether the Earth be Round ; and the thing required is , That from the Doubtful Question a certain Conclusion be deduced : The Earth ir the Subject or Minor Extream ; Roundness is the Affection , or Property , to be demonstrated ; and I am to find out a Medium , by which it may appear that the Attribute agrees with the Subject . Which may be this : That the Shadow of the Earth , as appears in a Lunar Eclipse , is Round , for the Shadow intimates the figure of Opaque Bodies : From which accordingly this Syllogism may be framed . A Body whose Shadow is round , must it self be round also . But the Earth is a Body , whose Shadow is round . Therefore the Earth is round . XV. Somtimes more than three Idea's are found in an Argumentation . But notwithstanding that an Argumentation is made up of three Propositions , yet many more may be added to them , without any Redundance or Defect ; as long as the Precepts of Ratiocination are but observed . For if the Third Idea , which we have taken to discern whether the Attribute agree with the Subject , or be removed from it , after having compared it with both the Extreams , do not give us a clear discerning , whether it agree with it or no ; we may assume another fourth Term , to procure a further clearness ; and if that be not yet sufficient , may proceed to a fifth , until we come to some Term , which may joyn the Attribute of the Conclusion with the Subject . As , supposing a Man should doubt whether Courtiers be miserable , he may consider that Courtiers are subject to many Passions , as Ambition , Envy , &c. and if he thinks this not to be sufficient , to prove them to be miserable , he may further examine what it is to be subject to Ambition , Envy , &c. which if he does , he shall find that it is continually to hanker after Honour , to be grieved at the prosperity of others , &c. and that such a Condition as this cannot but be obnoxious to many Miseries ; whence he may form this Argumentation : Courtiers are tormented with Ambition and Envy , and they that are so , are in continual Trouble , and they that are in continual Trouble , are miserable : Therefore Courtiers are miserable . XVI . The Division of an Argumentation into Perfect and Imperfect . Argumentation in General , is divided into Perfect , and Imperfect . Perfect Argumentation is a Syllogism , which forasmuch as it consists of Three Propositions , duly disposed , is of a perfect Form , and most proper to persuade . An Imperfect Argumentation is , either an Enthymeme , an Induction , an Example , a Dilemma , or a Sorites , whose Form is less accurate , and not so accommodate to persuade as the Perfect . We shall first treat of a Syllogism , and afterwards proceed to the rest . CHAP. XVI . Of Simple Syllogisms ; and those either Complex , or Incomplex . I. What Simple , and what Conjunct Syllogisms are . OF SYLLOGISMS , some are Simple , others are Conjunct . Simple Syllogisms are such , in which the Medium is only joyned to one Term of the Conclusion at once : Conjunct are those in which the Medium is at once joyned with both Extreams . Accordingly this Syllogism : Every Planet is enlighted by the Sun : Saturn is a Planet : Therefore Saturn is enlightned by the Sun. Is Simple , because the Medium , viz. Planet is separately joyned with the Term Saturn , which is the Subject of the Conclusion . But for the contrary Reason this Syllogism : If a Covetous man serves Mammon , he cannot obey the Law of God ; But a Covetous man serves Mammon : Therefore a Covetous man cannot obey the Law of God. Is Conjunct , because a Covetous man , which is the Subject of the Conclusion , and cannot obey the Law of God , which is the Predicat , are both joyned with the Medium , s●rves Mammon , in the Major Proposition . Of this latter sort we shall speak in the next Chapter . II. There are two sorts of Simple Syllogisms . A Simple Syllogism is divided into two other kinds : For there are some , in which tho' the Conclusion be Complex , that is , composed of Complex Terms ; yet one part only of its Subject or Predicat is taken , to be joyned with the Medium in one Proposition ; and the rest , which is no more than one Term , is taken and joyned in the other Proposition : As in this Syllogism ; The Divine Law requires us , to honour Kings ; Charles the Second is a King : Therefore the Divine Law requires us to honour Charles the Second . There be others again , in which each whole Term of the Conclusion is joyned with the Medium ; to wit , the Attribute in the Major , and the Subject in the Minor. The former are called Complex , the latter Incomplex : And of these two kinds of Simple Syllogisms , we shall speak under this Head. III. The Definition of a Simple Syllogism , A Simple Syllogism therefore is a Perfect Argumentation , in which from two Propositions premised in the Antecedent , the Conclusion or Consequent necessarily follows , in case the two foregoing Propositions have been granted . I have said in the Definition , That the Conclusion necessarily follows from the Premisses ; because our assent to the Premisses necessitates the Conclusion , not only as to Species , as they call it , but as to Exercise . For the Knowing Faculty acts necessarily , that is , supposing all Requisites necessary for Operation , cannot chuse but operate : But when the Major and Minor are granted , there is nothing more wanting to infer the Conclusion ; therefore the Understanding cannot but infer it . IV. The Understanding cannot but assent to a Proposition that is clear and evident . Neither is it any obstacle to what hath been said , that the Understanding is subject to the Will : For this is false , whenever the Object is evidently and distinctly propounded to it ; because in that case it is forced to assent by the Evidence of of the thing . For we often experience in our selves , that the Understanding cannot be restrained from giving its assent to a Proposition which appears clear and manifest to it ; tho' the Will may sometimes indirectly hinder it , by diverring it , and busying it about other Objects : But this it cannot do directly , by commanding it not to assent to the Conclusion ; because the Understanding doth not follow the command of the Will in things that are Evident , but only in those that are obscure and doubtful . V. The Form of a Syllogism . The Form of a Syllogism , is the Regular disposition of the three Propositions , so that the Conclusion may necessarily follow from the Premisses ; which consists in this , that the Middle Term be fitly ranked with the two Extreams , that is , with the Major and Minor ; and also that the Propositions be orderly placed , as to Quantity , that is , Universality and Singularity ; and Quality , that is Affirmation and Negation . The former of these , which is the Disposition of the Terms , is called Figure ; the latter , which is the Determination of the Propositions , is called the Mode of a Syllogism . So that the Figure respects the remote Matter of a Syllogism , viz. the Three Terms , the Middle Term , and both Extreams ; whereas the Modus regards the next Matter of a Syllogism , viz. the Three Propositions , the Major , Minor , and Conclusion . VI. The three Figures of Syllogisms . There be three Figures of Syllogisms : The First is , when the Middle Term is the Subject in the Major , and the Praedicat in the Minor. The Second , when the Middle Term is the Praedicat in both Premisses . The Third is , when the Middle Term is the Subject in them both . VII . Of the Modes of Syllogisms . There are reckoned 21 Modes of Syllogisms , which may be reduced to 14. The Modes of the First Figure , are Barbara , Celarent , Darii , Ferio . Of the Second , Cesare , Camestres , Festino , Baroco . Of the Third ; Darapti , Felapton , Disamus , Datisi , Bocardo , Ferison . The Modes of the first Figure are called Direct and Perfect , because all manner of Questions , whether Affirmative or Negative , Universal or Particular , may be concluded by it . Whereas in the Second , Negatives only ; and in the Third , Particulars only can be inferr'd . In all the foregoing Artificial Words there are Three Syllables , whereof the first signifies the Major , the second the Minor , and the third the Conclusion ; and the Vowel of each Syllable shews what Quantity and Quality the Proposition must be of . For A signifies an Universal affirming ; E , an Universal denying ; I , a Particular affirming ; and O , a Particular denying Proposition , according to the common Distick . Asserit A , negat E , verum Generaliter ambo : Asserit I , negat O , sed Particulariter ambo . A affirms , E denies , but Generally both : I affirms , O denies , but Specially both . For the further clearing of the Figures of Syllogisms , I shall add Examples of the Modes of each Figure . The First Figure . Every Body is extended , Every Stone is a Body ; Therefore every Stone is extended . No Mode is a Substance , Every Figure is a Mode ; Therefore No Figure is a Substance . Every thing that is mov'd , is moved by another , Some Body is mov'd ; Therefore some Body is mov'd by another . No Spirit is Material , Some Substance is a Spirit ; Therefore some Substance is not Material . IX . On what Principles the first Figure is grounded . The force of the first Figure is grounded on the Dictum de Omni , and Dictum de Nullo . The Dictum de Omni is this : Whatsoever is Universally affirmed of an Universal , is also affirmed of that which is contained under that Universal : As of a Body , it is universally affirmed that it is Extended ; which must ▪ therefore also be affirmed of a Stone , which is contained under it . Dictum de Nullo is , when whatsoever is universally deny'd of an Universal , is also deny'd of that that which is comprehended under that Universal : As when every Substance is deny'd to be a Mode , and Figure is contain'd under the Notion of a Mode ; therefore Figure is denied to be a Substance . No Stone is a Plant , Every Oak is a Plant ; Therefore no Oak is a Stone . Every Body is divisible , No Point is divisible ; Therefore no Point is a Body . No Impenitent person shall be saved , Some man shall be saved ; Therefore some man is not an Impenitent person . Every ●niversal is communicable to more than one , Some Nature is not communicable to more than one ; Therefore some Nature is not Universal . The Third Figure . Every Body is divisible , Every Body is a Substance ; Therefore some Substance is divisible . No Angel is circumscrib'd by place , Every Angel is Finite ; Therefore something that is finite , is not circumscrib'd by Place . Some Number may be increased , Every Number is an Affection of things ; Therefore some Affection of things may be increased . Every one that serves God is a King , Some one that serves God is poor ; Therefore some one that is poor , is a King. Some Folly is not to be blamed , Every Folly is a defect of right Reason ; Therefore some defect of right Reason is not to be blamed . No heavy Body tends downward of its own accord . Some heavy Body is Matter ; Therefore some Matter doth not tend downward of its own accord . XII . Galens Fourth Figure . The Fourth Figure is said to be Galen's , and is when the Medium is predicated in the Major Proposition , and subjected in the Minor ; which tho' it concludes necessarily , yet ( as Averrhoes saith ) with some Machination or difficulty , and besides Expectation . General Rules of Syllogisms . XIII . The Rules of Syllogisms . Forasmuch as all Conclusions cannot be deduced from any Premisses : There are some Common Rules , which are to be observed in all Syllogisms . XIV . The First . The First is this , The Middle Term must he distributed , that is , it cannot be twice taken particularly , but must once at least be taken generally . For should the Medium be twice taken particularly , as it must be when the Premisses are particular , it may be taken for divers parts of the same Whole ; because Particulars are distinct , and so nothing will be concluded , or at least nothing necessarily concluded . Which is sufficient to make an Argumentation faulty , since that only is called a good Syllogism , whose Conclusion , if the Premisses be true , cannot be false . And therefore this Argument , Some Body is Triangular , Some Body is Spherical ; Therefore some Spherical Body is Triangular . For since Body is taken here for divers parts of Bodies , a Spherical cannot be joyned with a Triangular ; because the same Body which is Spherical , cannot also be Triangular . XV. The Second Rule . The Second , From pure Negatives nothing can be concluded . The Reason is , because two Negative Propositions separate the Subject from the Medium , and the Attribute also : Now from the separation of two things from the same Thing , it doth not follow , that they are the same Thing , or that they are not the same Thing . As for Example , from these Propositions that the Mind , is not the Body , and that the Body is not capable of Perception , it doth not follow , that the Mind is not capable of Perception . XVI . The Third . The Third , The extreams of the Conclusion , must not be more Universally taken , than they were taken in the Premisses . Wherefore when either of the Extreams is taken Universally , the Argumentation must needs be false , if it be taken particularly in the two first Propositions . The Reason of this Rule is deducible from the first , because it is irregular to Argue from a Particular , to an Universal . For from this , that some Men are given to Drink Wine , it cannot be concluded , that all Men are given to Drink Wine . XVII . The Fourth . The Fourth , The Conclusion always follows the weaker part of the Premisses . That is , if either of the Premisses be Negative , the Conclusion must be so also ; and if either of the Premisses be Particular , the Conclusion must be Particular also . The Reason of this Rule is , because where there is a Negative Proposition in Syllogism , the Medium is removed from one of the extreams of the Conclusion , and therefore can never joyn them together , which is required to make an Affirmative Conclusion ; and if either of the Propositions be particular , no Universal Conclusion can be deduced from them . For if the Universal Conclusion be Affirmative , the Middle Term being Universal , must also in the Assumption or Minor Proposition be Universal , and therefore must be its Subject , since the Attribute , in Affirmative Propositions , is never taken Universally ; wherefore the Medium joyned to the Subject , will be particular in the Minor ; and so the Universal will be in the Major ; for otherwise it would be twice particular : And therefore it will be the Subject , and therefore that Major , must be likewise Universal . So that there can be no particular Proposition in an Affirmative Argumentation , whose Conclusion is Universal . Of Complex Syllogisms . XVIII . What Complex Syllogisms are . From what hath been said , may easily be understood what Complex Syllogisms are : For they are not so called , because they consist of Compound Propositions , but because the Terms of their Conclusions are Complex , and are not taken entire in each of the Premisset , in order to their being united with the Medium , but only one part of their Terms : As in this Example . Gold is an Inanimate Thing , Covetous Men worship Gold ; Therefore Covetous Men worship an Inaminate Thing . In which Syllogism the Attribute of the Conclusion is , Worship an Inaminate Thing , whereof only some part is put in the Major , viz. an Inaminate Thing , and Worship in the Minor. XIX . Complex Syllogisms are to be reduced . These Syllogisms in the Conversation and Discourses of Men , are more frequent than Incomplex ones , which are seldom or never used , except it be in the Schools ? For who ever in common Speech , heard a Man Discourse at this rate : Every Stone is a Body , A Diamond is a Stone ; therefore a Diamond is a Body . And tho' Complex Syllogisms seem at the first sight , to deviate from the Rules of Figures , yet they appear to be true , when they are reduced to Incomplex ones . For this Syllogism , The Scripture Commands us to Honour Kings . Charles the Second is a King , Therefore the Scripture Commands us to Honour Charles the Second . Tho' it be in the Second Figure , in which it is repugnant for all the Propositions to be Affirmative , yet it is for all that a true Syllogism , because in this Proposition , The Scripture Commands us to Honour Kings ; the word Kings , is taken for all Kings in particular , and therefore Charles the Second is reckoned amongst them , that are to be Honour'd . Besides King , which is the Middle Term , is not the Attribute in this Enuntiation ; the Scripture Commands us to Honour Kings , tho' it be united to the Attribute Commands . For that which truly is the Attribute , is affirmed and agrees : But King is neither affirmed , nor agrees , that is , it i● not here annexed to Scripture , which is the Subject . Again , the Attribute is restrain'd by the Subject , but the term King , is not restrain'd in this Proposition ; The Scripture Commands us to Honour Kings , because it is taken Universally . Wherefore we must say , that it is the Subject of another Proposition involved in it , as if I should say , The Scripture Commands that Kings be Honoured . So that this whole Argument consists in these Propositions , Kings are to be Honoured , Charles the Second is a King ; Therefore Charles the Second is to be Honoured . And therefore this Proposition , The Scripture Commands , which before was look'd upon as Principal , is only incident to this Argumentation , and is joyned to the Affirmation , to which the Scripture is added as a Proof . Whence it is manifest , that this Argument is of the first Figure , and in Barbara , because that Singulars are esteemed Universals , when they are made use of in their whole Latitude . CHAP. XVII . Of conjoynd or Compound Syllogisms . I. What is required to make a Compound Syllogism . COnjoynd or Compound Syllogisms are those in which the Major is so compounded , that it contains the whole Conclusion . And because the Major Proposition of such Syllogisms is four-fold , viz. Conditional , Copulative , Disjunctive and Proportional or Analogical , therefore they constitute four kind of Syllogisms , Conditional , Copulative , Disjunctive , and Analogical . II. Conditional Syllogisms . Conditional Syllogisms are those in which the Major Proposition is Conditional , and contains the whole Conclusion , As If the Soul of Man be Corporeal , it may be divided into Parts , But the Soul of Man cannot be divided into Parts , Therefore it is not Corporeal . The Major consists of two Propositions ; the first is the Antecedent , If the Mind of Man be Corporeal ; the second , the Consequent , it may be divided into Parts . III. The twofold Figure of Conditionals . The Figure of Conditionals may be two-fold ; the first is , when the Antecedent of the Major , or Principal Proposition , is put in the Minor or less Principal , so as that the Consequent of the same may be put into the Conclusion ; as in this Syllogism : If created things cannot subsist of themselves , it is necessary that they be preserved by God , But created things , cannot subsist of themselves , Therefore it is necessary that they be preserved by God. IV. The Maxim of the first sort of Conditional Syllogisms . And this sort of Argument is founded upon this Maxim ; where the Antecedent is put the Consequent must be put also . The other Figure is when the Consequence of the said Major Proposition , is taken away , that the Antecedent may be taken away also ; As , If John doth Marry this Woman , he is unwise , But John is not unwise , Therefore John doth not Marry this Woman . V. The Maxim of the other sort of Conditional , Syllogisms . This kind of Argumentation is founded on this Maxim ; Where the Consequent is taken away , the Antecedent must be taken away likewise . Now to put the Antecedent or Consequent , is to Affirm that which is Affirm'd , and to Deny that which is Denied : And to take them away , is to Deny that which is Affirm'd , or Affirm that which is Denied . Or to speak more distinctly , to put , is to Affirm the Antecedent that hath been Affirm'd ; or to Deny the Antecedent that hath been Denied ; and on the contrary to remove , or take away , is to Deny the Affirm'd Consequent , or to Affirm the Denied Consequent . So that he also takes away that Affirms , that which was Denied before . As for Example , If an Angel hath not Organs , he doth not Feel : But he hath not Organs , Therefore he doth not Feel , Is a Syllogism deduced from the Position of the Antecedent , to the Position of the Consequent , notwithstanding that it proceed by way of Negation . VI. Conditional Arguments may be faulty two manner of ways . Conditional Arguments become faulty , these two manner of ways ; the one is when from a true Major , a false Conclusion is deduced : As when the Antecedent is inferred from the Consequent : As if one should say ; If a Stone be a Living thing , it is a Substance , But a Stone is a Substance , Therefore it is a Living thing . And another way , when from the Negation of the Antecedent , is inferred , the Negation of the Consequent ; As in the same Example , If a Stone be a Living thing , it is a Substance , But a Stone is not a Living thing , Therefore it is not a Substance . VII . What Copulative Syllogisms are . Copulative Syllogisms are only of one sort , as when in a Copulative Proposition Negative , one part is put , to take away , or remove the other : As , The same Body cannot be at the same time , both Round and Plain ; But the Earth is Round , Therefore it is not Plain . Because these Syllogisms do not necessarily conclude , when one part is taken away , and the other is put in its place ; as appears in this Argument , taken from the same Proposition . The same Body cannot be both Plain and Round , But the Earth is not Round , Therefore it is Plain . VIII . What Disjunctive Syllogisms are . Disjunctive Syllogisms are such whose first Proposition is Disjunctive , that is , whose Parts are joyned with the Disjunctive , or , either . Death happens to Man either by default of the Soul , or of the Body ; But it doth not happen by default of the Soul , Therefore by default of the Body . IX . Their Figure is twofold . The Figure of Disjunctive Syllogisms is twofold ; the one , when one part is taken away , that the other may be put ; as in the Example before alledg'd : The other , when one part is put , that the other may be taken away : As , They who first gave us an account of Antipodes , either spoke the Truth , or imposed upon us ; But they spoke the Truth , Therefore they did not impose upon us . A Disjunctive Syllogism is grounded on this Principle , that two Contradictions cannot be true at the same time . Wherefore it is necessary , that the Parts of a Disjunctive Proposition must be Repugnant , so as that when one is put , the other is remov'd ; and when one is remov'd , the other is put , as in the alledged Examples . When it happens , that there be more Parts of the Disjunction than two , one of them must be opposed to all the rest ; as if one should make this Proposition : It is either Winter , or Summer , or Spring , or Autumn , One part only must be put in the Assumption or Minor Proposition ; that so in the Conclusion , the rest may be taken away ; As thus , It is Winter , therefore it is neither Summer , nor Spring , nor Autumn , Or else the rest must be taken away in the Assumption , that one Member may be put in the Conclusion ; thus , It is neither Summer , nor Spring , nor Autumn , therefore it is Winter . X. How Analogical Syllogisms are formed . To these we may add Proportional or Analogical Syllogisms , in which the Analogy and Proportion is dilated , or Adjuncts are explained . For Proportions here spoken of is nothing else , than the agreement of Relatives . As when from four Relatives ; as for Example , four Numbers , 2 , 4 , 3 , 6 , we say that the same is the Relation of the half , and double , between 2 and 4 , as between 3 and 6. Or when in a Triangular Figure , considering the two Angles of it , and the two opposit Sides ; we assert the Relation of Equality and Inequality to be the same , as there is between Side and Side . The First and Third , are by Geometricians commonly called Antecedents , as the Second and Fourth Consequents , because they follow from the former . XI . What Analogical Syllogisms are . SYLLOGISMS are called Proportional or Analogical , when the Proportion set down in the Major Proposition , is protracted , or dilated : Which then happens , when the Consequents in the Minor , being taken for Antecedents , are further referred to other Consequents : And then conclude , that there is alike Proportion between the first Antecedents , as between the latter Consequents . As when we say , 2 are to 4 , as 3 are to 6 , and 4 are to 8 , as 6 to 12. Therefore 2 are to 8 , as 3 to 12. Because in this way of Discourse , it is made clear , that 4 and 6 , which are the Consequents in the Major Proposition , are made the Antecedents in the Minor : And because the Relates are the Middle Terms , to which the Extreams ( viz. the Antecedents and Consequents ) are joyned , therefore we infer , that the Extreams themselves , agree also . And such Syllogisms as these , are said to conclude equally ; forasmuch as in them , both the Relations as they begin in the same manner , so likewise they proceed and end , in the same manner . XII . The Second way of forming Proportional Syllogisms . Analogical Syllogisms are also formed in this manner , when after that a like Proportion hath been set down in the Major Proposition , an Adjunct is taken up in the Minor , by which the Proportion is rendred more evident , which therefore so agrees to one Antecedent , with respect to its Consequent , that thence we conclude , that it also agrees with another Antecedent , with respect to its Consequent . For if one should call at Pleasure two Sides of a Triangle , A , B , and the two opposit Angles , C , D , and then argue thus : The Side A is to the Side B , as is the Angle C to the Angle D ; but the Angle C is greater than the Angle D ; therefore the Side A is greater than the Side B. For by this Term Greater , it is clearly explained wherein the Proportion consists . XIII . The Third way . Thirdly , Proportional Syllogisms are made by the Commutation of Proportions ; viz. when a Proportion being set down in a like manner in the Major Proposition , the Minor is past by in Silence , and the Relates are so inverted , that they are mutually concluded of each other . This way of Arguing is often used by Geometricians , and more especially by Arithmeticians : As when they reason thus ; There is the same Proportion betwixt 2 and 4 , as betwixt 3 and 6 , and therefore 4 are to 2 , as 6 are to 3 ; because that Maxim is implicitly understood , that Like things agree with their Like reciprocally . CHAP. XVIII . Of Imperfect Argumentations . I. What Imperfect Argumentations are . SOme Argumentations are called Imperfect , not with respect to the Matter whereof they are composed ; but with regard to the Form , which is not so exact in them , but less digested than that of a Syllogism . For in these the Antecedent consists expresly but of One Proposition , or of Many : Such are Enthymeme , Induction , Example , Sorites , and Dilemma . II. What an Enthymeme is . An ENTHYMEME seems to have taken its Name from this , that it expresseth only One Proposition , and suppresseth the other , as being too clear and obvious , and which is easily understood by those we discourse with . This way of Arguing is very common among Men , who in their usual Reasoning commonly suppress the Proposition , as supposing that they to whom they speak will easily supply it : As when we say , I was able to save thee , And therefore also to ruin thee . In which Argumentation there is only one of the Premisses express'd , and the other supprest or imply'd , which when added it affords this Perfect Syllogism . Whosoever was able to save thee , was also able to ruin thee ; But I was able to save thee , Therefore I was also able to ruin thee . III. Induction . INDUCTION is an Argumentation , which from many Singulars concludes an Universal : As , This Triangular consists of three Lines , and so doth that likewise , and all the rest ; therefore every Triangle consists of three Lines . To this way of Reasoning it is required , that it contain an enumeration of all the Species and Parts ; for if but one be wanting , it admits of an Exception , and subverts the whole Proposition . Wherefore nothing can certainly be proved by Induction , except the same be whole and compleat in all its Parts , and so General , as to admit no Exception , which is very difficult , and almost impossible . For who can recollect in his Mind all the Cases of Law ? or what Student of Natural Philosophy , can reckon up all the several kinds of Bodies , all Plants , Animals , Stars , & c. ? Are not almost all Men of Opinion , that Heat dilates , and Cold contracts ? Yet when we search more narrowly into the matter , we find that when Water is frozen , it takes up more space than when it is not frozen ? Wherefore in cases where the greatest part of Particulars is only known , we can infer no more but thus ; that for the most part it is so : Tho' sometimes we meetwith some Special Cases , which swerve from the Common Rule . So from many Experiments we conclude , Snow to be white , a Crow black , and Honey sweet ; notwithstanding that in some Countries there be found red Snow , white Crows , and bitter Hony. IV. What Example is . EXAMPLE is a kind of Imperfect Argumentation , whereby from one Singular we gather another , because of a likeness of Reason that is between them . As when from this , That Caesar subdued the People of Rome more by his Clemency , than by his Arms ; I gather , that a Prince ought rather to have recourse to Clemency , than to Arms , for the reducing of his Subjects . Or when considering that others , by serious Meditation have arrived to some degree of Learning ; I infer , that I my self also may arrive at the same by closely following my Studies , and by an attentive Consideration of the Things I undertake to examine . V. Argument from Authority . To an Example belongs that which is called an Argument from Authority ; which is , when we make use of the Testimony of one or more , to infer a Conclusion ; whose force depends of a concealed , but yet imply'd Proposition : As when a Man saith , Archimedes , and other famous Mathematicians assert , that the Sun is many times bigger than the Earth : Therefore we ought to hold the Sun to be many times greater than the Earth . For here this Proposition is understood , That every man ought to be belived in his own Art and Profession : Or we are to take that for Truth , which Archimedes , and the most Learned Mathematicians do assert of their own Art. VI. Sorites . SORITES , is an Argumentation consisting of many Propositions so disposed , that the Predicat of the foregoing Proposition becomes the Subject of the following ; whence the last Predicat is in the Conclusion attributed to the first Subject : As in this Example , Covetous persons desire many things , They who desire many things want many things , They who want many things are miserable ; therefore Covetous men are miserable . VII . When a Sorites doth not conclude truly . This Argument doth not conclude truly , but when whatsoever is said of the Attribute , is likewise said of the Subject : Wherefore this Ratiocination , Salt-meat excites to drink , and by drinking Thirst is extinguish'd ; therefore Salt-meat extinguisheth Thirst , is faulty : Because Salt-meat only by Accident invites Men to drink , forasmuch as it caves a dryness in the Throat , which causeth drinking . VIII . What a Dilemma is . A DILEMMA is made by the Disjunction of many Propositions opposite to one another , whereby the Answerer is so shut up , that there is no way left for him to avoid the dint of it , which part soever he chooseth : As suppose a Man should accuse another of a Crime he hath committed , thus ; Either you did know your self to have offended against the King , or not ; if you did know it , how durst you violate the Law of Majesty ? If you did not , why did you run away ? IX . A Dilemma may be faulty two manner of ways . The First . A Dilemma may be faulty two manner of ways : One ▪ when the Disjunctive Proposition wherein it is founded doth not contain all the parts of the thing divided : As if a man would prove , That one ought not to Marry , by this way of Arguing ; If you marry a Wife , she will be either Beautiful or Deformed ; if Beautiful , she will make you Jealous ; if Deformed , you will loath her ; therefore you ought not to marry at all . The Mistake is , because there are Women who neither are so Beautiful , as to cause Jealousie ; nor so Deformed , as to cause Loathing . X. The Second . In the Second place , a Dilemma is vicious , when the particular Conclusions of either part are not necessary : Thus it doth not follow that a Beautiful Wife must needs make her Husband Jealous , forasmuch as she may be so Prudent and Chaste , as not to give the least occasion to doubt of her Vertue . Neither is it necessary that a Deformed Wife should be displeasing to her Husband , because her Deformity may be made up by her Vertue and Ingenuity , which may render her very grateful to her Husband . XI . What is to be observed in a Dilemma . He that makes use of a Dilemma , must take care that it be such as may not be retorted upon himself , which it is said Protagoras did ; to whom Euathlus , his Disciple , having promised a certain Sum of Mony in consideration of his instructing of him , to be paid on that Day when he should first get the better in the Cause he pleaded ; and taking that for his first Cause , to plead whether he was to pay that Sum of Mony he had promised him , made use of this Dilemma : Either I shall lose this Cause , or I shall win it : If I lose the Cause , then according to our Agreement , I am to pay you nothing ; if I win it , then I shall owe you nothing by the Sentence of the Judges . Which Argument Protagoras thus retorted ; Either you will lose this Cause , or win it : If you lose it , you will by Sentence be obliged to pay me ; if you win it , you must pay me according to the Tenour of our Agreement . CHAP. XIX . Of Demonstration , a Topical Syllogism and Sophistical . I. How Science , Opinion , Faith , and Error are distinguish'd . FOr the better understanding of the following Discourse of Apodictical , Topical , and Sophistical Syllogisms , it is necessary that we first explain the Nature of Science , Opinion , Error , and Faith ; that by exhibiting their distinct Notions , the Principles from whence they are derived may be the better known . II. What Science is . SCIENCE is the certain and evident knowledge we have of any thing : For whatsoever is so evident to us , that we are certain of it , that we are said to know , or have the Science of . Accordingly the knowledge of a Conclusion is certain and evident , when the Premisses , whereon as Principles it doth depend , are so . III. What Opinion is . OPINION , is a Knowledge that is not altogether certain , but joyned with some fear or wavering of the Intellect , in its assent to it . For Opinion , tho' it be a true assent to the Conclusion , yet is it doubtful and uncertain ; and such an assent as this is the Effect of a Dialectical Syllogism , as Science is the Effect of a Demonstrative , or Apodictical Syllogism . IV. What Error is . ERROR is an Opinion opposite to Truth , that is , a False one . V. What Faith is . FAITH is a Persuasion founded upon the Testimony of another , which may be either true or doubtful , according to the different Authority it rests upon . So the Faith we have to God is most firm and stable , because we know him to be True , and that to Lye is repugnant to his Nature . But the Faith we have to a Man , hath always something of Uncertainty joyned with it ; since there is no man but can deceive another , if he please . VI. How we may distinguish the several kinds of knowledge . If in considering any Axiom , the truth of it do immediately appear to us , from the Evidence that is sound in it , without any further Proof or Disquisition , this kind of Knowledge we call INTELLIGENCE : And thus we know first Principles . But if by its own proper Evidence , it cannot engage the Understanding to assent , then we must have recourse to other Motives , by which the Intellect may be convinced of its Truth : Now these Motives can be no other , but Reason and Authority . If Authority engageth us to assent to the things Propounded to us , this is that we call Faith : But if Reason sways us , then either that Reason leaves some fear behind it , whereby we are made doubtful of the certainty of the thing , and then this assent is called Opinion : Or the Reason doth satisfie fully the Understanding , and then it is either Seemingly only Evident , for want of due Attention , and thence comes Error in case it be really false ; or at least a Rash Judgment , if we take it to be true , before we have sufficient grounds of giving our Assent to it : Or if the Reason proposed to us , be not only seemingly true , but evidently so , and be clearly and distinctly perceived by our Understanding , then the Conviction produced in our Mind by this Reason , is called Science . Forasmuch therefore as Demonstration begets Science , and that the Conclusion of a Demonstration is Science , we will first Treat of it , and afterwards in order , of those things that produce Opinion and Error . VII . What Demonstration is . DEMONSTRATION is a Syllogism consisting of Premisses that are True , Immediate , Prior , more known and causes of the Conclusion . Those Propositions are said to be True and Immediate , which have their Evidence from themselves , and not from any other thing : And which are known by their Terms : As , Every thing is , or is not . For there is an Inborn Power or faculty in us , whereby we assent to first Principles . Wherefore we should never give our assent to the Conclusion , except the Premisses appeared evident to us ; neither do we assent to the Conclusion , but because we believe the Premisses to be true ; and therefore it is necessary that the Premisses , be more known than the Conclusion , according to that saying ; That for which any thing is such , is more such it self . VIII . Demonstration is two fold either à Priori , or from the Cause . Demonstration is twofold , the one à Priori , and the other à Posteriori . Demonstration â Priori ( which alone , to speak properly , is Demonstration ) is that in which the Effect is Demonstrated by its Cause : As when we prove the Existence of Light , by the Existence of the Sun. Or when Geometricians prove that round Wounds are longer a Healing , than such as are of a long Figure , forasmuch as in those , the Sides are further distant than inthese . IX . Demonstration à Postiriori , or from the effect . Demonstration à Posteriori is when we Demonstrate the Cause by the Effect : As when from the Existence of Light , we Demonstrate the Existence of the Sun. When we prove the Heaven to be Fluid and Corruptible , from the various Things that are Generated in it ; as from the Comets that are found in it ; from the Spots about the Sun , and from many Stars , which for some time shew themselves there . To this kind of Demonstration may also be reduced the Demonstration which is made from the remote Cause , as when one proves that a Stone doth not breath , because it is not an Animal , when it would have been more proper to have proved it by this , because it hath no Lungs . For the having of Lungs is the near cause of Respiration , and not the being an Animal ; nay it will be found that to have Longs is not the property of an Animal , since there are many Animals that have no Lungs , as Oysters , &c. X. Of Ostensive Demonstration . Antient Authors make mention of another kind of Demonstration , which they call Ostensive , by which a thing is Demonstrated from proper Principles , directly and by it self . As if a Man , when a right Line is given , and a Semidiameter made of two Circles , and two other right Lines , to one of the Intersections of the Circles , drawn from their Extreams , and by these three Lines a Triangle is made , should prove Ostensively that this Triangle is Equilateral , or hath all its Sides alike , by shewing that the two last Lines are even , or of the same Length , because they are equal to the same Line given ; and that they are equal to the same Line given , because both of them separately proceed from the same Center , to the same Circumference with it . XI . Demonstration by Deduction to an inconvenient . To this they have added another kind of Demonstration , which they call Deductive to an inconvenient ; which tho' it be inferiour to the former , yet may be of use , where we cannot have an Ostensive Demonstration , as being also of insuperable necessity . And this is when we demonstrate a thing to be so , because if it should be otherwise , either an Absurdity , or an Impossibility , or a contradiction must necessarily be granted : Such as is , That the Effect doth not depend on the Cause ; And that the thing containing is less , than the thing contained , and the like . As if by Deduction to an inconvenient he would prove the abovesaid Proposition from hence , because no Side can be admitted to be equal to another ; but at the same time it must be granted , that all Lines drawn from the Center to the Circumference are equal ; or that two things which are equal to one thing , are not equal between themselves . XII . What a Topical Syllogism is . A TOPICAL SYLLOGISM , which is also called Suasory , or Opinable , is that which concludes from Probables : Or whose Premisses do not hold forth , a necessary Connexion of the Subject , with the Middle Term , or of the Middle Term with the Attribute . For tho' the Conclusion it proves , partaks more of Evidence than Obscurity , yet it leaves something of doubt or Hesitation behind it , which makes that the understanding cannot assent without some Scruple . And therefore 't is commonly said that a Topical Syllogism doth persuade indeed , but doth not force one to assent as a Demonstration doth . XIII . What things are called probable . Those things are called Probable , which seem to be so to all , or to the most , or to the Wise , or at least to the most , or most considerable amongst them : As it seems Probable to all , that the approaching Summer will be Hot , yet it is not certain , forasmuch as it sometime happens that the Summer is very Cold. It appears to most , that Physick is necessary for the Curing of Diseases , whereas , notwithstanding it often happens , either through the Ignorance of the Physitian , or through Default of the Patient , the Distemperature of the Air , or the Unhealthfuness of the Place , that a Medicin may do more hurt than good . It appears to Wise Men , that Learning ought to be desired by all ; when notwithstanding there be many found that despise it , and who prefer their Ignorance before Learning . The most considerable Men , are of Opinion that the Earth is moved , and that the Sun stands still in the midst , and yet there are many that oppose this Opinion , and maintain the contrary . XIV . How a Topical Syllogism is distinguisht from all others . Wherefore all those Syllogisms , whose Premisses are Contingent , and do not infer a necessary Connexion between the Subject , and the Middle Term ; or between the Middle Term , and the Predicate , are called Topical , that is , Local or Probable . The former from the Places whence their Proofs are taken , the latter from the likelyhood of them . XV. What a Sophistical Syllogism is . A SOPHISTICAL or Paralogistical Syllogism , which with one Word is called a Sophism , is a Syllogism consisting of false Propositions , which yet have an appearance of Truth : Or is a Syllogism , that begets Error . As for Example , this Syllogism , All Lines drawn from one Point to another are Equal ; But a Right and a Crooked Line , may be drawn from the same Point , to the same Point ; Therefore a Right and a Crooked Line are Equal . XVI . Of the various ways of deception in Sophitical Syllogisms ; and first of the Fallacy in Words . All Fallacy or Deception , is either in the very Form of the Argument , or in the Words , or in the Things . As to the Form of Argumentation , we have already largly Treated , in Chapter XVI . As for the Cavilling which consists in Words , that is callen Fallacia Dictionis , or Fallacy in Words , which frequently consist in the Homonymy of the Words , when things altogether different are signified with the same Word . Sometimes also in the Ambiguous context of the Speech , and then it is called Amphibology ; Examples of which kind , do also occurr amongst the best of Authors . XVII . The Fallacy from a conjoyned Sense to a divided , and on the contrary . There is another Sophistical way of Arguing , from conjoynd Things , to those that are divided ; and on the other Hand , from Things divided to those that are conjoynd . This hath given occasion , to that Distinction of a Divided and a Compound Sense . The former is , when a Faculty or Power is joyned with an oppsite Act ; as the Faculty of Laughing , with the Act of Weeping ; for this Proposition , he that Weeps can Laugh , is true in a Divided , though not in a Compound Sense . But a Compound Sense is , when two opposite Acts are united together ; and thus , this Proposition , He that Laughs cannot Weep , is true in a Compound , Though not in a Divided Sense . XVIII . The Fallacy from the second Intention to the first . There is a Third way of Cavilling , when we Argue from Second intentions , to First ; as thus ; A Circle is a Figure ; But Figure is a Genus , therefore a Circle is a Genus . XIX . From a Relative to an absolute Expression . The Fourth is à Dicto secundum quid , from a Relative Expression , ad Dictum simpliciter , to an absolute Expression ; As if a Man should Argue , that because Blackamoors are White , with repect to their Teeth , therefore they are absolutely White ; or because Wine is for the most part Hurtful to Sick Persons , should conclude Wine to be absolutely Hurtful . XX. Ignorance of the matter in Question . The Fifth is that which is called Ignoratio Elenchi , or Ignorance of the matter in Question , which is , when another thing is proved , than that which is denied by the Adversary . XXI . Petition of the Principle . The Sixth is Petition of the Principle , when the Point indispute is taken for granted . As if one should go about to prove that the Earth doth rest , because the Sun is moved : that being the Principal thing in Question , whether the Sun be moved . XXII . From a No-cause to a Cause . The Seventh is taken à Non Causa ad Causam , from a No Cause to the Cause , as when that is brought in for a Cause , which is no Cause at all : As when we refer the changes of times to the Moon . XXIII . From a manifold Question . The Eighth way of Cavilling , proceeds from a manifold Question , which is , when many Questions are so Propounded , that they look like one only . As if one should ask , whether the Sun and Earth are moved . XXIV . The manner how to avoid Sophisms . There is no safer way to avoid these Captious Sophisms , than to define the Words themselves , in case of a Fallacy from Equivocation , or Homonymy . Neither are we only diligently to consider , what the thing in Question is , but also , what is the Attribute of the Question , and what Relation and Order it hath to the Subject it self . For it is of great importance , whether the Attribute be Universally by it self , and primarily Attributed to every Subject , or that it agree to some one only , or by Accident . In like manner , whether the Attribute be spoken of the Subject simply , that is , absolutely , or with respect to something : All which particulars may be easily known , from what hath been already said . The Places from whence the Middle Term is Fetch'd . XXV . What the Places are from which the Middle Term is fetch'd . We come now to the General Heads , or as the Rhetoricians call them , Places of Arguments , to which the Proofs which we use in any matter , may be reduced . For as some Syllogisms are Demonstrative , others Opinable or Opinionative and Suasory , and others again Paralogistical or Erroneous , so there must be divers Places , whence the Middle Term or Argument may be Fetch'd . XXVI . The Middle Term in a Demonstr●tive Syllogism , may be the Genus . For in a Demonstrative Syllogism , the Middle Term agrees with the Subject , and the Attribute with the Middle Term , as a Genus , or a Propriety , or a Definition , or a Cause acting necessarily , and the like . As if a Man should have a Mind to Demonstrate that a Mote in the Sun , is indefinitely divisible , he may take the Genus for his Middle Term , and argue thus : A Mote is a Body , but a Body is indefinitely divisible ▪ therefore a Mote is indefinitely divisible : The Minor is to be suppos'd from Natural Philosophy . XXVII . Or a Propriety . So to demonstrate a Mans being Rational , we may take his Property , which is the Faculty of Speaking , and Reason thus : The Power of Speaking , that is , the Faculty of expressing ones Mind by Words , Signs , or Gestures , belongs ot Man ; But whatsoever enjoys this Faculty doth partake of Reason ; therefore Man doth partake of Reason . XXVIII . Or a Definition . So likewise a Definition may serve for a Middle Term , to prove that Oysters are Animals , thus : Oysters are Bodily things , endued with life and motion : But whatsoever hath life and motion is an Animal : therefore Oysters are Animals . XXIX . Or a Cause . And so also a Cause acting necessarily , may be the Middle Term ; for thus a Lunar Eclipse may be proved from its Efficient Cause , viz. the Sun and Moon being placed in opposite Nodes , or in the Intersections of their Orbs , after this manner : It is necessary for the Moon to be Eclipsed , as often as the Globe of the Earth interposeth between the Moon and the Sun , from which the Moon borrows her Light ; but then the Globe of the Earth interposeth between the Moon and the Sun , when the Sun and Moon are in opposite Nodes ; ( because at that time they are Diametrically opposite , and the Earth plac'd in their Diameter ) therefore there must necessarily be an Eclipse of the Moon , when the Sun and Moon are constituted in their Nodes , or the opposite intersection of their Orbs. XXX . The Middle Term in a probable Syllegism , may be fetch'd first from the Genus . We make use also of like places in a Probable or Suasory Syllogism ; yet so as that tho' the Middle Term agree to the Subject , ( yet the Attribute does not to the Middle Term , as a Genus , Propriety , &c. as before : ) As if a Man to prove Rhetorick to be profitable for Mankind , should argue thus ; Rhetorick is an Art , but every Art is profitable to Mankind ; therefore Rhetorick is profitable to Mankind . In which Syllogism , the Middle Term Art , is indeed the Genus of the Subject Rhetorick ; but the Attribute is profitable , is not its Genus , but only a contingent Adjunct , or common Quality ; and therefore neither doth the Mind assent to it without something of Doubtfulness , whether or no Rhetorick may not be reckon'd amongst those Arts , which tho' they be accounted Subtil , yet are esteemed by some as unprofitable , or at least indifferent . XXXI . From a Propriety . In like manner one may prove , from a Propriety of Logick , that Logick is a thing desirable , thus : It is the Property of Logick , to direct the Mind in the knowledge of things ; but what directs the Mind in the Knowledge of things , is something desirable ; therefore Logick is a thing desirable . This Argument also leaves some hesitation in the Mind , because the directing of the Mind in the Knowledge of Things , doth not necessarily conclude the thing to be desirable ; because there are many who rather desire to continue in their Ignorance , than to be instructed in Logick . XXXII . From the Cause . We may also argue from the Cause thus : This Picture is drawn by Apelles ; but the Pictures drawn by Apelles are very exact : Therefore this is an exact Picture . Which enforceth only a Probable , but not a certain Conclusion ; because the best Painters do not always Paint alike , nor so exactly , but that sometimes Faults may be spied in their Works . XXXIII . Ambiguity is the only place for a Sophistical Syllogism . A Paralogistical , or Sophistical Syllogism , has but one only place , viz. Ambiguity ; which being once detected , its Imposture lies open ; and that which seem'd to be a good Syllogism appears to be none at all . Because the Reason of Syllogism requires , that it have only one Middle Term , one Subject , and one Attribute ; whereas in a Sophistical Syllogism there are two Subjects , and as many Attributes without a Middle Term : As when a man Argues , some Mountain is Taurus , Taurus is a Lowing Animal : Therefore some Mountain is a Lowing Animal . For the Ambiguity here lies in the word Taurus , which agreeing to two different things , is in the Major taken for a Mountain , and in the Minor for a Four-footed Animal . Whence it appears , that the word Taurus is no Middle Term , forasmuch as it doth not agree with the Subject and Predicate . XXXIV . Ambiguity is the cause of Deception in all things . For Ambiguity is that which occasions deception in all things ; for he that concludes , that a Man asleep is awake , because it hath been before granted , that it is possible for a man that sleeps to be awake , doth not do it for any other Reason , but because this Proposition may be understood either disjoyntedly , with respect to different times ; or conjunctly , with regard to the same time . And he who concludes that the Buyer hath eaten raw flesh , because it may be , he confess'd that he had eaten what he had bought , doth so because of the Ambiguity of the words , What he had bought ; which may either be taken only for the substance of the Flesh ; or also for an Accident of it , viz. Rawness . And the like may be said of all Sophistical Places , Amphibology , Composition , Division , Account , &c. forasmuch as they all agree in this , that they have some Ambiguity either in a Word , or in a Phrase ; or that one Sense is taken in the Proposition , and another in the Assumption . So that it is no wonder , that when both are admitted for True , an Absurdity follows from them . The Fourth Part of Logick . Concerning Method , or the Orderly Disposition of our Thoughts . CHAP. XX. Of the General Method of Knowing . I. Method is necessary to the Right forming of our Thoughts . FOrasmuch as LOGICK was found out for the attaining of Sciences , and that our Thoughts can hardly be rightly formed without its assistance , METHOD seems to be necessary to assist and accomplish our Mind in the Knowledge of Things . For tho' possibly there may be some of such quick and piercing Wits , as without difficulty to dive into the Natures of Things , and to solve the most abstruse Questions ; yet will he never be able to attain certain Knowledge , except he be first acquainted how he must direct his Mind , and what Order he must observe . Wherefore Method is necessary , as well to assist him in the searching out of Truth , as in the avoiding of Error , Confusion , and Obscurity . Which Method is nothing else , but an Orderly disposition of things to be treated of , suitable and accommodate to the Capacity of Learners . For it must be of that Nature , as not to put any force upon the Wit of Man , but rather pleasantly allure it , and guide and direct it by the Evidence and Easiness of its Rules and Precepts . II. Three things are requisite to the manner of Knowing . This Mode or manner of Knowing consists in Three things : First , That the thing propounded may be clearly and distinctly Perceived . Secondly , That we judge rightly concerning the Matters we have thus clearly and distinctly perceived . Thirdly , That we commit to Memory the Truths we have discover'd , that is , the things we have rightly . Perceived and Judged . By observing these Three Precepts , we shall relieve all the Weaknesses of our Mind , and prevent those Errors into which it is apt to fall . For seeing that the main Obstacles of Science are , either an over-hastiness of the Mind ; the same will be removed by clear and distinct Perception ; or else Error and Doubt , which will be cured by Sound Judgment ; or lastly , Forgetfulness , which will be prevented by the Remembrance of the Things perceived and judg'd by us . It remains only to enquire , by what means this distinct Knowledge may be attained ; and how our Mind may be brought to that pass , as never to assent to any thing which it has not before clearly perceived , and so to impress the Things she has judged of in her Memory , that she may never forget them . III. First , the distinct Perception of the thing . As to the First , it is requisite , that setting aside all Precipitancy , we give heed to the Matter propounded , and ( as it were ) scan the same with our inward Eyes . In order to which , it will be proper for us to behold or contemplate one thing only at once , that our Understanding may not be distracted by the multitude of Objects , and lest by minding many things , our attention to Particulars may be the less . For the multiplicity of Objects presented to our Understanding , breeds Confusion ; and as they who behold a Field , distinguish'd with variety of Colours , do not distinctly perceive the variety of Colours that is in it , but behold it under the appearance of one Colour only : So they who consider several Objects at once , cannot bestow a due attention upon every particular ; and it cannot otherwise be , but that they must be promiscuously confounded in their Mind . IV. Wherefore we must rather set our selves to examine Simple things , than those that are Compound . In order to attain this due Attention , it will be of good use to undertake the examining of a Simple thing , or of some Attribute or Mode : For these kind of Perceptions , whereby Simple and Incomplex things are represented to us , are more clear and distinct . As for Example , The Soul of Man is more distinctly perceived by us than Man ; because the Soul of Man imports one Nature only , viz. a Thinking Being ; whereas a Man comprehends two Natures , viz. a Soul and Body , which belong to two different Genera , and therefore cannot be both at once proposed to the Intellect without some confusion . V. Things Simple are to be examin'd before those that are Compound . Accordingly Simple things are to be known before Compound , near before remote , and few before many . Thus we attain a fuller knowledge of the things that are born , if we begin the consideration of them from their first beginning . By which means the Famous Harvey perspicuously discovers the generation and growth of a Chicken , by shewing what Parts are daily formed in an Egg , which an Hen hatcheth . In like manner we arrive to a more accurate knowledge of a Plant , when we take a view of its beginning , progress , and perfection , considering it in its distinct Stages of its budding , growth , blooming , and bringing forth fruit ; and the same may be said of all things that grow and increase . VI. Things Positive are more distinctly conceiv'd , than Negative . But forasmuch as Substances are chiefly known by their Attributes , and that many of them are found in every Substance , we are rather to consider those that are Positive , than the Negative . Thus the Nature of the Soul is more easily known by me , when I consider it as an understanding , willing , and judging Subject , than when I conceive it as Immaterial , Incorporeal , Invisible , &c. because Negative Attributes do not so much declare what a thing is , as what it is not . Wherefore it will also much conduce to the attaining of Knowledge , if we always begin our Enquiries with those things that are more Universal , and from them to proceed to Singulars : Because the knowledge of Universals doth more accomplish our Minds , than that of Singulars ; the reason whereof is , because Universals are in a manner Eternal , as having no Original , and not being comprehended within any difference of Time or Space of Place , which has given occasion to that noted Axiom of Philosophers , that Science consists in Universals , and not in Singulars . VII . We must call to Mind , what hath been said in the First Part of this Discourse . We shall the better understand all these Particulars that refer to clear and distinct Perception , by firmly retaining in our Memory , what hath been already handled in the First Part of Logick ; because this Fourth Part is founded upon those Rules which are there delivered , concerning the Genealogy of things , their Causes and Effects , Subjects and Adjuncts , Agreement and Disagreement of things ▪ &c. VIII . The Second Precept , about the manner of Knowing , is concerning Judgment . The Second Precept about the Mode of Knowing is this , That our Judgment do always follow our Conceptions ; that is , that we never assent to any thing which we have not before clearly and distinctly perceived : For the Order of Reason requires , that Knowledge always go before Judgment , and that Simple Terms make way for those that are Complex ; but yet so , as that the Judgment we pass of any thing , may exactly answer to the Knowledge we have of it ; as I have before hinted in the Fourth Rule for the attaining of Truth . For since the Second Operation of the Mind , or Judgment , doth involve two things , the Subject , and the Predicate or Attribute , it is necessary that the Nature of both be fully known to us , before we can judge whether the one do agree with the other , or dissents from it . Thus we must first have distinctly understood what the Sun , and what Heat is , before we can affirm the Sun to be hot , or ( which is the same ) that Heat agrees to the Sun. As to which point they do greatly mistake , who too much cleaving to the Prejudices wherewith they have been tainted from their Childhood , do judge according to them ; because they pervert the Order of Reason , and do not follow their Perceptions as they ought to do ; but anticipate them , and believe them to be true ; before they have perceived them to be such . IX . What is to be done by him who is in doubt about the Matter propounded to him . If a Man chance to doubt of the Truth of the thing he is enquiring into , he may easily avoid falling into any Error , by suspending his Judgment , and not affirming or denying any thing concerning it , until he have exactly examin'd all the Difficulties of it , and by the Rules of Perception have removed all doubts concerning it . For we must not think it enough , that this or the other thing appears distinctly and clearly to others , except it appears likewise to us . For seeing every one desires Knowledge for himself , it is but reasonable , that he make use of his own Understanding , and not of anothers ; and that he pass Judgment so far only , as his own Knowledge guides him . Wherefore , before we can with any safety give our assent to any thing , we must be certain that the thing be so indeed , as it is conceived by us , and not only so , but that it cannot be otherwise . X. There is a different certainty of Truth in things . Yet are not we to conceive that all things that are true , are of the same certainty ; for some things are only Contingently true , that is , such as are taken to be true by us , tho' indeed they may be false ; as when I take a Man to be Godly , because he is frequent at Church , and at Sermons , and is liberal to the Poor ; all which Signs are sufficient Morally , to persuade me that he is Godly ; tho' notwithstanding all this , it may happen that he is not so . Other things again , are altogether Certain and True , as are all Propositions of Eternal Truth , which are true in that degree , that they cannot admit any suspicion of Falshood : Such as are these Propositions , Twice four make Eight . Three is a number . And therefore such necessary Propositions as these are called Axioms ; because their Predicates agree with all their Subjects , and at all times , and according to the different degree of necessity , they partake and admit of several Names . XI . What Physical Certainty is . Some Attributes are said to be joynd with their Subjects , by a Physical certainty , when according to the order of Nature , it is impossible but they must be joyned to them ; as when we say , that a Man hath two Feet ; because , that tho' a Man may be conceived without Feet , yet Naturally Man is never without them . Other things are called true , by Metaphysical certainty , when an Attribute is so indissolubly attributed to its Subject , that it cannot be conceived to be otherways : As when we say , Three is a number . And the same may be said of singular Axioms , forasmuch as the same Definitions , Differences and Attributes occur in them as in Universals . As to Judgment , the Reader may have recourse to what hath been said in the second part of Logick , where is treated of Judgment , and the nature of Propositions . XII . The Third Precept is Memory . And forasmuch as it is of little use to know the nature of things , except we remember them ; we are also to be informed , how the things we understand , may be so imprest on our Memories , that we may not easily forget them again . This we may easily procure , by following the Order of our Method ; that is , by taking care , that we commit nothing to Memory , which we have not before throughly examined , and passed a right Judgment of . For daily experience shews us , that the more clearly any thing is perceived by us , the stronger it is imprest on our Memories , and that we more easily remember the things , that are in order propounded to us , than those which are offered to us confusedly . For the Memory doth of it self , and spontaneously embrace things that are clearly understood , and , as a Foot-boy , follows right Judgment . XIII . Helps of the Memory . But yet we may promote and assist our Memory . First , By keeping our Mind still and quiet , without suffering our Understanding to be variously distracted by multiplicity of Objects : Especially if to these we add the desire of Learning some new thing or other , or that we be excited by admiration to insist the longer on the matter we desire to know . For such things as these we are wont more to imprint in our Memory . It is also greatly strengthened by moderate Study and frequent Exercitation . For as the Fingers by playing upon a Lute , do accustom themselves to such and such Motions , so by Exercise we attain to ability and readiness . To which we may add , that by Study , the Species in the Brain become distinctly ranged and joyned , and by use alone , almost all obstructions are removed . Thirdly , It will be a great help to our Memory , if the things we commit to it be not only evident , but also connexed , and orderly disposed , and adorned with the Circumstances of Causes , Effects , Time , Place and other such like . This is the first office of Memory . XIV . The Office of Memory . It is the office of Memory , to retain the things we have committed to it ; which we shall obtain by frequently repeating , and a diligent consideration of them : As likewise by endeavouring to reduce Compound Things to those that are Simple , and special things to General . For by this means , they will more clearly be represented to our Minds , and more firmly fixed in our Memory : As is apparent in those Sciences , which from simple terms proceed to Propositions and Axioms ; which without any trouble , are insinuated into our Minds , and continue with us till our Lives end . CHAP. XXI . Concerning special Method ; and first of that which is called Analytical . I. Another Method necessary to the orderly disposing of our Thoughts . THe word Method , is taken more strictly here than in the foregoing Chapter ; because it being there , only our design to inform Beginners , what Order they were to observe in the knowledge of Things ; it was sufficient to set down a Method , which might be helpful to them for this end , and point out to them the way , whereby to arrive at the distinct knowledge of Things . But here we are to handle , not only how we ought to form our Conceptions , but also how we ought to order and dispose them , either for the discovering of the Truth we are ignorant of , or for the proving of the Truth we know to others . II. Method is twofold , Analytical and Synthetical . And accordingly there is a twofold Method , the one called Analytical , or the Method of Resolution , which shews the true way , by which the thing was Methodically and Primarily invented . The other Synthetical , or the Method of Composition , which clearly demonstrates what hath been concluded ; but by an opposit way , and fetch'd à Posteriori . For a whole Science cannot be set down according to Analytical Method , but only some particular Questions , about certain Terms or Things . III. What is to be observed about Terms About Terms we may enquire , what is to be unstood by the Word in Question ; for seeing that some Words , belong to Notions , that are common to all Men ; and other proper or peculiar to some that profess some certain Disciplines : We are to mind , what Men are wont to understand by the Word ; or what the Masters of those Disciplines are used to signifie by them ; or what he means by them , who makes use of them in Writing or in his Speech . For it cannot be doubted , but that the most part of our disputes arise from the Ambiguity of Words ; whilst one takes them in one Sense , another in another ; which disputes might easily be decided , if the Parties in contest were agreed about the signification of the Word in question . IV. What is to be observed about things . About the thing it self , we are to consider what it is , that is , what its Essence and Properties are . Whether it be , that is , whether it exist in the Nature of Things ; and if it do , whether its existence be possible or necessary . Whence it hath its Original , whether from it self , or from some other thing ; and if it proceed from another , whether by Creation or Generation . Of what Nature it is , Matcrial or Intellectual , and with what Faculties it is endowed , &c. Of what quantity , or bigness it is , and what space it takes up amongst other Bodies , if it be Material ; and what if it be Intellectual , what its Powers are . What effects it produceth , that is , whether it be a Principal Cause , or an Instrumental only ; whether it work voluntarily or necessarily ; whether it be Univocal , or Equivocal , &c. How it is distinguished from other things , or what distinction there is between it , and other things , and whether it differ from them really , or Notionally only . V. What a Question is . Analytical Method being the Art which guides Reason in the Research of Truth , we must before all things , endeavour to know the Nature of the Question , which we are to examin , and to consider afterwards , how many sorts of Questions there may be made . Questions are Propositions , which include something that is already known , and something that is unknown . For otherwise , they would be rather known Truths , than Truths to be known ; and if they did not also contain something that is known , they could not properly be called Questions , because we cannot proceed to that which is unknown , but by means of something that is known . VI. There is a four-fold way of searching out the Truth of things : First when by the Effects we find out the Cause . All Questions concerning things may be reduced to four Species . First , When from the Effects we find out the Cause . As for Example it is Notorious , , that the Sun shining upon a Prism , represents therein variety of Colours ; the Question is , what is the true cause of so many divers Effects . It is a known thing , that Air and Water are subject to Rarefaction , and that at one time they take up more space than at another : the Question is , what is the reason of this change , and what there is in Nature , that can encrease the quantity of Bodies . VII . The second is when from the Causes we enquire into the Nature of the Effects . The second sort of Questions is , when Effects are endeavoured to be discovered by their Causes . It is a known thing , that Wind and Water have great force in them , to move Bodies ; but our Fore-Fathers , for want of due attention , not considering duly what Effects might be produced from those Causes , did not make that good use of them , as we now do , by the useful inventions of Watermils and Windmils , and many other conveniences , by which abundance of human labour is spared , which is an advantage of true Natural Philosophy . The first sort of Questions , in which the Cause is searched out by the Effects , are the total Object of Natural Philosophy ; and the second sort , in which the Effects are enquired into by the Cause , are the whole Practise of it . VIII . Thirdly , when from the Parts we enquire into the Nature of the Whole . The third sort of Questions is , when from the Parts we enquire into the Nature of the whole ; as when after having set down several Numbers , by adding them together , we enquire , what Number results from them all . Or when having got two Numbers , we enquire , what they produce by mutual Multiplication . IX . Fourthly , when from one Part we search into the Nature of another . The Fourth is , when having a whole , and some part of it , we search out the other part of it : As , when having a determinate number , and that part which is to be taken from it , we enquire , what number will afterwards remain to us . By the Word Part in this place , we are not strictly to understand , only the Part of a thing , but whatsoever doth belong to any Substance , such as are Modes , Properties , Accidents , and in a Word , all the Attributes that are found in any thing . X. What is required to enable us to answer these Questions . That we may be able to answer these Questions , in the First place , it is requisite , that we clearly and distinctly conceive the point , that is precisely enquired after . Secondly , that we do not precipitate our Answer , till we have discovered whotsoever belongs to the Question , by certain Signs and Tokens , and not imitate those , who hearing their Friends Name , presently conceive it to signifie that particular Person , and give their answer , before they know what he , who asked the Question , means by it . Thirdly , Forasmuch as in every Question , there is something conccaled , we must be careful to denote that which is hid , by some certain Conditions , which may determine us to the seeking of one thing , rather than another , and which may induce us to judge , that that which we have found is the very same thing , that was enquired after . Fourthly , After we have examined the Conditions , let us set our selves seriously to consider , whatsoever in the matter propounded is either hid from us , or clear and evident to us ; forasmuch as by means of this , we may arrive to that which is unknown to us . And in this our Attention to that which we know of a thing , in the resolving of a Question , Analytical Method chiefly consists : The whole Art and industry whereof consists in this , by this Examination to find out several Truths , which may lead us to the knowledge of that thing , which we are endeavouring to discover . XI . What Analytical Method is . Analytical Method therefore is nothing else , but a Particular application of the Mind , to that which is known , of that which is most particular in the Qestion to be resolved ; whence it successively deduceth other Truths , which lead it at last , to the thing it desires to know . I say , that Analytical Method is a particular Application of the Mind , to that which is known ; to observe that which Analytical Method , hath in common with Synthetical , which also begins with that which is known . And add , of that which is most particular in the Question it would resolve . To intimate the difference that is between the Analytical and Synthetical Method ; and that this latter takes that which is known , of that which is most general in the Questions ; whereas the other takes it of that which is most particular in them . XII . How by way of Analysis we may prove the Mind of Man to be Immortal . As suppose the Question to be whether the Mind of Man be immortal ; and to find out this , we consider the Nature of the Mind , and presently discover , that Thinking is the property of the Mind of Man , which tho' it might be supposed to doubt of every thing besides , yet cannot doubt of its own Thinking , since its doubting is a kind of Thinking . Afterwards it proceeds to examin what it is to Think , and when it perceives that nothing is included in its Idea , of what is involved in the Idea of an Extended Substance , or a Body : Yea , that it may be denied of Cogitation , that it belongs to the Body , forasmuch as it is something extended in Length , Breadth , and Depth , hath Parts , is of such and such a Figure , is Divisible , &c. without destroying the Idea we have of Cogitation : We conclude , that Cogitation cannot be the Mode of an Extended Substance ; because the Nature of a Mode is such that it cannot be conceived , when the thing whose Mode it is , is denied of it . Whence it may also be inferr'd , that seeing Cogitation is not a Mode of the Body , it must needs be the Attribute of another thing ; and that therefore a Thinking Substance , and an Extended Substance , are two distinct Substances . From which finally we conclude , that the destruction of the one , doth not infer the destruction of the other . Add also , that Extended Substance cannot properly be said to be destroyed , since whatsoever we may call its destruction , is nothing else but a change or dissolution of some parts of the Matter , which still remains the same in Nature as it was . As when all the Wheels of a Watch are broken , we may easily judge that no p●rt of the Watch is destroyed , tho' the Watch it ●elf be commonly said to be spoil'd or destroyed . From which Example it appears , that the Soul , which is not divisible , neither consists of any parts , cannot perish , and consequently that it is Immortal . XIII . Analytical Method proceeds from a heedful Consideration of a thing . Whensoever therefore the Nature or Cause of any thing is proposed to our Examination , we must in the first place accurately examine all the Conditions of the Question propounded , without minding such as are Extraneous , and do not belong to the Question . Secondly , We are to separate those things which are certain and manifest from those that include any thing of Confusion or Doubt : For we are to search and trace out the thing we enquire for , from clear and evident Idea's . Thirdly , Every Difficulty we meet with is to be divided into Parts , which Parts are to be considered by themselves . For Partition is like a Torch to a Learner , directing him which way he is to go , without uncertainly wandring up and down . Fourthly , We are orderly to dispose of our Perceptions , and the Judgments we frame thence ; so that beginning from the most easie , we may proceed by degrees to those that are more difficult . Wherefore our chief business must be , diligently to consider , and well to weigh those Particulars chiefly , which are clear and perspicuous in the Question , and not proceed to those that are unknown , except we find that by those which are already known to us , we are likely to Master them . Fifthly , That the Thing in question , be furnish'd with some Note or other that may determine it , and make us judge it to be the same , whenever we meet with it . XIV . An Example of the aforesaid Analytical Method . As by Example , it is apparent that Water , and all Liquid things , have their Parts in Motion : For we see that Water dissolves Salt and Sugar . which would not be , if the insensible parts of the Water by their continual motion , did not run against the Salt and Sugar . And if we enquire into the Cause of this Motion , we shall find that Water and other Liquid Bodies , are not moved of themselves , because they are Bodies , since all Bodies are not moved ▪ and those which rest are Bodies as well as those which are moved . Wherefore we are to seek for a Foreign Cause , which produceth Motion in Liquid Bodies , and makes them to dissolve the Particles of Salt And findingthat the Air , by penetrating the Pores of the Water , cannot be the Cause of this Motion ; for whence should the Air have the force to agitate all the parts of the Water ? it remains that we assign some other Matter more subtil than Air , and more fluid , which may put the Air , Water , and other Liquid Bodiet into Motion , which in the General Part of our Natural Philosophy we shall declare to be the First Element . For the more subtil any Body is , or divided into less Parts , so much the more easily it is agitated , and being once put into Motion , doth th● more easily retain it . Wherefore the most subtil Aether , or Celestial Matter , must be supposed to be the first Principle of Motion , which Matter abounds in the Fire , Sun , Fix'd Stars , Spirit of Wine , and other Liquors . XV. In all Method we are to proceed from that which is more known , to that which is less known . Wherefore in the Analytical , as well as Synthetical Method , we are always to proceed from that which is more known , to that which is less known . This Rule is common to all Method , neither is any to be accounted true that deviates from this Principle . Yet there is this difference between the Method of Resolution , and that of Composition ; that in the former , the Known Truths used in the Examination of the thing , which is propounded to be known , a●e taken from Particulars , and from them we do ( as by special Steps ) ascend to Generals ; not as is done in the latter , where beginning with Generals , we come down to Particulars . So that these two Methods differ , as the Ascent or Descent of the same Hill ; or the Way whereby we go up from the Valley to the Top of the Hill , and again come down from thence to the Valley . CHAP. XXII . Of the Method of Composition . I. What use we are to make of the Synthetical Method . THis Method is called the Method of COMPOSING , because it makes use of General and Common things , to come to things Particular and Compound : As for Example , If I have a mind to teach another by the way of Synthetical Method , that the Soul of Man is Immortal , I begin with these general Maxims ; That Every Being is either a Substance , or a Mode ; that there are two Substances , viz. a Thinking Substance , and an Extended Substance ; that no Substance can properly be said to perish ; that what we call Destruction in a Bodily Substance , is only a Dissolution of its Parts : Whence I conclude , that that which hath no Parts , as the Soul , cannot be destroyed , and that by consequence it is Immortal . II. Why Synthetical Method proceeds from things General , to less General . I have said , that the Method of Compounding proceeds from more Universal things , to such as are less Universal ; and it does so , because by this way of proceeding , all Repetitions , which commonly occasion Confusion and Tediousness , may be avoided . For should we treat of Species , before we have spoken of the Genus ; forasmuch as we cannot know the Species , without knowing the Genus first , we should be fain to explain the Nature of the Genus , as often as we had occasion to treat of any Species . But because this way of Demonstration is peculiar to Geometricians , and is look'd upon by them as very necessary to persuade Truth , we will borrow from them whatsoever we have to say concerning it , to the end that we may follow the same way in searching out the Knowledge of other things , which they use in the demonstration of Matters Geometrical . III. What things Mathematicians make use of in their Demonstrations . Mathematicians are wont to deduce those things that are of the greatest moment and weight from known and easie Principles , by a Chain of Simple Truths ; which they refer to three kinds ; the first whereof includes Definitions : As , a Right Line is that which is the shortest betwixt two Points . A Point is that which hath no Parts . The second contains Postulata , or things demanded or taken for granted , which are so evident as to need no confirmation , and want nothing but the Hearers assent , viz. that from any Center , and at any distance , a Circle may be described . The Third comprehends Axioms , or common Notions of the Mind , which are not only manifest and evident in the Science we are treating of , but also in all others : As that all Right Angles are equal amongst themselves ; that which is Equal , is bigger than all its Parts taken together . IV. Three things are required to the Extorting an Assent . Hence three things are chiefly observed by Geometricians , for the forcing of Assent . First , That no Ambiguity be left in the Terms , which is easily avoided by the Definitions of the Terms , which ( as was said before ) are nothing else but open Explications of the Terms and Words by which the things under debate are signified . The Second is , That every Ratiocination be founded on clear and distinct Principles , being so evident , that whosoever rightly understands the Words , must needs give his Assent to them . Which is the Reason why Mathematicians do always presuppose their Axioms , which they require to be granted them , as being so evident , that they stand in need of no Explication . The Third is , That every Conclusion they propound be proved demonstratively , making use only of those Definitions they have already alledged , or such Principles as have been granted them : Or lastly , Propositions , which by force of Argument they have deduced from them . So that all which Mathematicians observe concerning this matter , may be reduced to these Heads , which we shall comprehend in the following Rules . Rules of Definitions . V. First Rule of Definitions . The First , That every Obscure or Equivocal Term be defined . VI. Second Rule . The Second , That no Terms do enter the Definition , which are not altogether clear , or have not been before explained . Which two Rules are of that necessity , that they cannot sufficiently be imprinted in our Minds ; forasmuch as by this means many Disputations are taken out of the way , which oft consists only in the Ambiguity of Words ; as when the same Term is by divers Persons taken in a different Sense ; which is a thing that happens very frequently in Schools . Wherefore , for the Removal of so many Disputations , which often do arise amongst the divers Sects of Philosophers , it will be sufficient if the Disputing Parties take care to explain distinctly , and in few words , what they conceive by the Term about which they Dispute , and what they would have others to understand by it . As for the Qualifications of the Definitions of things , of these we have treated in the Fourteenth Chapter . The Rule of Axioms . VII . A Rule for Axioms . This is a Rule of Axioms , That no Propositions be set up for Axioms , but such as are most manifest and evident . For no body questions , but that there are some Common Notions of the Mind that are so clear and perspicuous , as to stand in need of no Demonstration , to make them appear more distinctly . For did they involve the least Doubtfulness , they could not be the Foundation of a certain Conclusion . And therefore they are called Axioms , or common Enunciations , because they are so clear and manifest , as to stand in need of no Demonstration . VIII . The Evidence of Axioms doth not arise from the Senses . But we are not to suppose , as some do , that the Certainty and Evidence of Propositions doth in any degree proceed from the Senses ; for that is absolutely false . For the Truth-discerning-Faculty is not placed in the Senses , which are often deceived by a Similitude of Things , and are not able to dive into the Difference that lies hid in them . Who is it that doth not experience how narrow and weak our Senses are , and how frequently they deceive us , when we go about to search out any thing by their means ? For altho' this Axiom , That the Whole is greater than any one of its Parts , be in some sort discernible by the Senses , yet not with such a Certainty as is necessary to Science ; because whatsoever our Senses discover to us concerning it , is only founded on the observations of ou● Infancy , which cannot afford us an undoubted , but only a probable Certainty . For by Induction a thing cannot be certainly known , except we be certain of the fulness of the Induction ; there being nothing move common , than for us to discern at last the falsity of those things , which from general Inductions we were persuaded to be most True. The whole Truth of this Proposition , the Whole is bigger than its Parts , doth depend on the clear and distinct Notions we have of the Whole and Parts , by which we judge that the Whole is greater than any one of its Parts , and that the Part is less than the Whole . For when we are discoursing of any thing that is firm and stable , we must not have recourse to the Senses , as Plato saith ; but to constant , immutable , and impregnable Reasons . Thus we clearly know , that a Triangle is a Figure , that the Number Two is an even Number ; because the Notion of a Figure is contained in the Definition of a Triangle ; and in that of the Number Two , the Notion of an Even Number . IX . The Certainty of Propositions depends on the clear Knowledge we have of them . Wherefore all the Certainty of our Knowledge in Natural things , depends on this Principle , Whatsoever is included in the clear and distinct Idea of any thing , the same may with truth be affirmed of it . Thus because Substance is included in the Conception of a Body , we may affirm a Body to be a Substance . Because it is involved in the Idea of a Circle , to have equal Diameters , we may assert of every Circle , That all their Diameters are Equal . Because it is included in the Idea of a Triangle , that all its Angles are Equal to two Right ones , we may affirm the same of all Triangles . What must be the Qualifications of Axioms , appears from what we have said of the framing of Propositions that are necessarily true , in the Thirteenth Chapter . Most General Axioms . X. To have many Axioms in a readiness , is a great help to ready Arguing or Ratiocination . But forasmuch as it is of great use , to have good store of Axioms at hand , whereby to prove and discover what is obscure and abstruse ; it will be necessary to set down here some general and necessary Propositions , from which as so many Fountains , more special ones as Rivulets may be derived . I. Whatsoever is comprehended in the clear and distinct Conception of any thing , the same may with Truth be affirmed of it . For since in the clear and distinct Conception of a Body Extension is contained , and Cogitation in the Idea of the Soul , I can truly affirm of a Body that it is extended ; and of the Soul , that it is a Thinking Substance . Wherefore we are to lay down this , as the Foundation of all Sciences ; that we must never give our full assent to any Proposition , which doth not appear evidently true to us , so as that we cannot but assent to it , without doing violence to our Minds . II. In every Idea or Conception is involved either Possible or necessary Existence . Since nothing can be apprehended by us , except under the notion of being Existent ; that is , necessary Existence is comprehended in the notion of a Being absolutely perfect , that is , of God ; and possible Existence in that of a Creature , or of a limited and finite Being . III. Nothing has no Affections or Properties . So it cannot be said , that nothing is Divisible , that it hath Parts , that it can be moved , &c. Wherefore , wheresoever any Property is found , there we may assert that there is a True and Real Being . IV. Nothing cannot be the Cause of any Thing . Forasmuch as the Cause of a Thing is supposed to be , before it can produce any thing , and that Nothing cannot exist , it doth follow , that neither can it be Principle or cause of any thing . For if Nothing could ever be Something , it would follow , in opposition to the foregoing Maxim , that it must have some Property , which is a Contradiction . From this Axiom , some others are deduced by way of Corollaries ; such as are , V. Nothing , nor any Perfection of a thing , actually Existent , can have Nothing , or a thing not Existing , for the cause of its Existence . Another Corollary : VI. Whatsoever Reality , or Perfection there is in any thing , the same is formally , or eminently in the first , and adequate cause of that thing . Whence it follows , that the Objective Reality of our Idea's , requires a Cause in which the same Reality , is contained , not only Objectively , but Formally , or Eminently . For this Axiom doth not only belong to the Efficient Cause , but also to the Exemplary . For if an Image be made more excellent than its Exemplar or Original , so that more Perfections are found in it , than in the thing it self , after the likeness of which it is made , it cannot be said to imitate its Exemplar , and consequently cannot properly be called its Image . VII . A Thing or Substance , cannot naturally be Annihilated . That is , it cannot so cease to be , as that nothing at all should remain of it . For we easily conceive , that when any thing ceaseth to appear , it doth chage its Nature , or is converted into another thing ; As for Example , we can well enough conceive , how Wood comes to cease to be Wood , how it comes to be Fire , and how the several Particles of Fire are subdivided into others , that at last they cannot be perceived by any Sense : But we can by no means conceive , how they should be reduced naturally to nothing , and from Being pass , to not Being . VIII . That which is clear and evident is not to be denied , because that which is obscure , cannot be comprehended . For we cannot doubt , but that there is Liberty and Indifferency in us , because we are conscious of it , and comprehend nothing more evidently or perfectly , tho' we cannot comprehend , how God doth leave the free actions of Men indetermined . IX . It is the nature of a Finite Mind , to be unable to comprehend that which is infinite . Because it is the nature of an Infinite being , to be Incomprehensible ; for if it could be comprehended , it would not be Infinite . What wonder is it therefore , that we cannot conceive matter to be Divisible into Infinite ? Or that we cannot understand the Mystery of the Trinity , or the Incarnation of the Divine Word ? Because our Mind is Finite , and bears no propotion to the Mysteries . Would but some Men weigh this Axiom , as they ought , they would not with so much obstinacy , rely upon their weak Reason , or trusting to their own Wits , invent a new kind of Divinity . X. If you take Equals from Equals , what remains will be Equal . XI . If you add Equals to Equals , the whole will be Equal . XII . It is in vain to endeavour that by more , which can commodiously be performed by less . Special Logical Axioms . Logical Axioms are of great use . To these we may subjoyn some Logical Axioms , which are of great use , in the guiding of our Discourse , and are taken from the Genus , Species , Difference , Division , Causes , &c. From the Genus . I. Whatsoever is affirmed or denied of the Genus ' the same is affirmed or denied of the Species . The reason is , because the Genus contains the Species , and because the whole Essence of the Genus is found in them : Thus , because it is affirmed of an Animal , that it is Sensitive , the same is also affirmed of Man and Beast . And because the same Animal is denied to be a Stone , so likewise , the same is denied of a Man and a Beast . Wherefore , the Genus is of no use to prove the Species , but only to remove it . For that which is not an Animal , neither can it be a Man ; but that which is a Man , must therefore be an Animal . II. The supposing of the Genus , doth not suppose such a Species . As for Example , supposing any thing to be an Animal , it cannot from thence be concluded , that it is a Man ; because it may be a Beast , which is likewise an Animal . II. The Genus being destroyed , the Species must be destroyed with it . For seeing that the Genus is an essential part of the Species , it must follow that the Genus being destroyed , that must needs be destroyed with it , which consists of it . Thus if we take away an Animal , we together take away the Species , that are contained under it . And by taking away a Foursquare Figure , we at the same time take away a Parallelogram and a Trapezium , which are the Species of a Foursquare . From the Species . I. The supposing of the Species , supposeth the Genus ; but the taking away of one Species , doth not necessarily remove the Genus . Because the Idea of the Genus , is comprehended in the Essential Conception of the Species , without which the nature of the Species cannot be explained . So supposing a Binary or the number two , we suppose a number also ; and asserting a Parallelogram , we likewise assert a Square . And if all Beasts were taken out the World , yet would not Animal be therefore taken away , seeing it would be preserved in Man. Hence it is , that the Species is of great force to prove the Genus , but of none at all to deny it . For that which is a Binary , must be a number , but it does not follow , that that which is no Binary , is therefore no number . II. All the Species being destroyed , the Genus is destroyed likewise . For in this case all the power of the Genus is exhausted , neither doth there any thing remain , of which it can be affirmed . So supposing the Sight , Hearing , Tasting , Smelling and Feeling to be destroyed ; the outward Sense must be destroyed likewise : And taking away Prudence , Justice , Temperance and Fortitude , takes away Vertue also . From the Form or Difference . I. The Form is that by which a thing is , what it is . Because the Form or Difference , is the chief Essential Attribute that is found in the Species , and whose property it is to constitute the same , and distinguish it from other Species . Thus Extension constitutes a Body , and Cogitation the Mind or Soul of Man. II. Where the total Difference or Form can be affirmed or denied , of the same the Species also may be affirmed or denied . This Axiom as a Corollary is deduced from the former ; for seeing the thing is constituted by the difference , where the same is found , it is necessary that there the Species be also . Thus , because Cogitation may be affirmed of the Mind of Man , therefore we may affirm it to be a Thinking Being . III. The Form and Species are reciprocated . The Reason is , because Difference constitutes the Species , and doth distinguish it from other Species , and therefore must have the same latitude as the Species it self , and therefore must reciprocally be affirmed of one another : As , Every thing that Thinks is a Mind , and every thing that is a Mind Thinks . From the Property . I. The Property is consequent on the Form. For the Property is something flowing from the nature of the Species , and so bound to it , that it agrees to the whole Species : So Divisibility follows Extension , and is so necessarily joyned to it , that no Body can be extended , but that it must be Divisible also . II. The supposing of the Form , supposeth the Property , and the taking away of it , takes away the Property also . As when Extension is supposed , Impenetrability and Divisibility are supposed likewise ; and if that be taken away , the Properties are taken away also . From the Definition . I. Whatsoever agrees with the Definition , agrees also with the thing Defined . For seeing that a Definition declares the nature of a thing , by its Essential Attributes , viz. by its Genus and Difference , it must include the Whole , contained in the thing defined ; and therefore whatsoever is Attributed to the Definition , the same must necessarily be also Attributed to the thing defined . Thus , because it agrees to the Art of Discoursing well , to direct the Mind ; therefore also it must agree to Logick , to direct the Mind . II. If the Definition belong to a thing , the thing defined must also belong to it . Thus , because it belongs to the Mind of Man , to be a Thinking Substance , it belongs also to the same to be a Spirit . And because to a Stone , belongs Extension in Length , Breadth and Depth , therefore it also belongs to it , to be a Body . III. If a Definition agree with a Definition , the thing Defined also , must agree with the thing Defined . As , That which consists of a Body and Mind , is endowed with Sense ; therefore Man is an Animal . Substance is something which hath an Essence and Existence distinguisht from all other things ; and on the contrary . From Division . I. If no part of the Division agrees to a thing , neither doth the thing divided agree with it . Thus , because the notion neither of a Spirit nor Body , doth agree to Substantial Forms ( save only the Soul of Man. ) Therefore , Substantial Forms cannot be Substances . II. Every Division must be entire , that is , it Enumerates all and every Part belonging to a thing . For should any part belonging to a thing , be omitted in the Division , there could not be an Adequate Enumeration of the Parts , neither consequently would the thing , by means of such a Division , be distinctly perceived . Thus the Division of a Man into Sound and Sick , is not Adequate , because there is a kind of Middle State , as , is that of a Man , that is recovering from Sickness . But the Division of Hand into Right and Left ; of a Line into Right and Crooked ; of a Number into Even and Odd , is Adequate because it Enumerates all and every Part. III. The Parts of a Division must be opposit . This Axiom follows from the foregoing . Thus things are better divided into Material and Immaterial , than into Visible and Invisible ; because some Invisible things , as a very clear Air , and our Breath , are not by nature distinct from Visibles . From the Cause . I. The Cause is always before the Effects For seeing the Cause is that from which a thing hath its Original , or that of which that Being doth in some sort depend , therefore it must needs exist before it . So a Carpenter is before the Building ; A Father before the Son , &c. A Cause is in a twofold Sense said to be before its Effect , viz. by a Priority of Nature and Time. A Cause is before its Effect by a Priority of Nature ; because the Effect exists by the Power of the Cause , and not the Cause by the power and virtue of the Effect ; yet not always by priority of Time , because some Effects exist at the same time with their Causes , as all those Effects which proceed by Emanation ; as the Proprieties do from their Subjects , which therefore exist the same moment with them . II. Nothing can be a Cause of it self . For seeing there is a Dependance in the Effect , whereby it proceeds from something that was before it ; it cannot be conceived , how any thing should be prior to it self . III. Supposing the Cause in Act , we suppose the Effect in Act also . The Reason is , because when the Cause is constituted in Act , it always does something , and that which it does is called its Effect . As supposing God a Producer , we must necessarily suppose something produced ; and therefore the Cause and its Effect , as well as other Relates , are said to be simul Natura , that is , to be both at once ; for no sooner is one Relative named , but at the same time we understand the other . So he is a Father , who hath a Son ; and he a Son , who hath a Father . IV. A Cause cannot give that which it hath not . For a Cause gives something to another thing , but it cannot give that which it self wants . V. Whosoever Acts by another , is esteemed to act of himself . As he who desires , exhorts , and adviseth others to commit some Wickedness , is said to be the Moral Cause ; because by Desiring or Commanding , &c. He makes the Effect to be imputed to him . From the Effect . I. The Effect is posterior to its Cause . This Axiom follows from the foregoing : For if the Cause be before the Effect , it follows that the Effect must presuppose it . II. No Effect exceeds the virtue of its Cause . For seeing the Effect borrows its Being from the Cause , it is impossible it should take any thing that goes beyond or exceeds the Power of its Cause . For Fire would never be able to warm the Hand , if to warm did exceed the virtue of Fire . III. That because of which every thing is such , is it self more such . That is , if the Nature of the Effect be good or bad ; the same doth more clearly appear in the Cause . This is true when both are capable of the same Quality : Thus because the Kettle is hot because of the Fire , the Fire must needs be more hot . But we cannot argue , a Man is satiated with the Meat he eats , therefore the Meat is more satiated . From the Subjects , and Adjuncts . I. Where the Subject is , there are the Adjuncts also . For seeing that the Adjunct is the Mode of the Subject , it does always accompany the fame : As where the Fire is , there is heat ; where a Dead Carkass is , there is a stink . II. Such as the Subject is , such are the Adjuncts . For such as the Orator is , such is his power in Persuading ; as the Sick is , such are his symptoms . III. Where the Adjuncts are , there is the Subject . Because Adjuncts are added to the Subject , and are considered as things that belong to it . As where Motion , Magnitude , &c. is found , there must also be a Body . From the Whole . I. What agrees to a Similar Whole , agrees also to the Parts of it . For seeing that a Similar Whole is made up of a Conjunction of Similar Parts , it must needs be of the same Nature with them . Thus , because Lead is heavier than Brass ; therefore every part of Lead , proportion being observed , must be heavier than Brass . II. Where any Whole is , there are all its Principal Parts . For the Principal Parts are Essential to the Whole . I say , the Principal Parts , as the Head , and the like ; because there are some Parts which belong to the Entireness , but not to the Essence of the thing . III. The Entire Whole being supposed , all its Parts are supposed also . The Reason is , because this Whole is nothing else than the Parts taken all together : As where the Entire Body of Man is , there must be its Skin , Bones , Sinews , Veins , Flesh , and all things that belong to the Entireness of it . From the Parts . I. Every Part , with respect to its Whole , is Imperfect , and Incompleat . So the Soul and Body , with respect to a Man , are Imperfect and Incompleat ; because they both belong to make a Perfect Man. So the Hands , Feet , Head , which are the Integral Parts of Mans Body , are more Imperfect than the Whole Body . II. Where all the Parts are , and joyned together , there is the Whole . This Axiom is evident from what hath been already said . From Like and Vnlike . I. Like do agree with Like . A Prince must govern a Commonwealth after the same manner , as a Father of a Family takes care of his Family . II. To Unlike things , Opposits do agree . As we love an Honest man , so we hate a Wicked person . A Shepherd feeds his Sheep , an Hireling neglects them . From Relates . I. Relates are by Nature together , or at one and the same time . For seeing that every Relation is mutual , and one Relative respects the other ; it cannot be , but that if you put the Relate , you must put the Correlate likewise : And therefore the Cause and the Effect , that which is before , and that which is after , and all other things that do mutually respect each other , are always at once and together in the Mind . From whence follows also this Axiom . II. One Relative being put , the other is put also ; and being taken away , the other is so likewise . From Contraries . I. That which is susceptive of one Contrary , is also susceptive of the other . As Water can be made hot , therefore it may also be made cold . A Dog cannot act justly , and therefore neither unjustly . II. Of Contraries , it is necessary that the one be in the Subject susceptive of it ; the other not . Thus if a Number be not Even , it must be Uneven . Yet this Axiom doth not hold in all Contraries ; for it is not necessary that a Wall should be white , because it is not black . From Privative Opposits . I. If the one be Absent , the other must be absent also . This must be understood in a Capable Subject . As if a Man sees , he is not blind . It is Light , therefore not Dark . II. For the Most part , there is no going back from a Privation to a Habit. As from Death to Life , from Blindness to Sight . III. What in one Subject is Privation , is often a Negation with regard to another . This appears in our Errors , which with reference to God , who doth not bestow upon us the whole knowledge of Truth , are only called Negations ; but with reference to us are Defects and Privations . Thus Ignorance of the Laws is blame-worthy in him , who professeth skill in Law ; but not to him who is of another Profession . From Contradictories . I. One Contradictory being put , the other is removed ; and on the contrary . As supposing that Peter walks , it cannot be that he should not walk . From Parity , or Equality . I. Even things with Even things agree , or disagree . As Faith to the Patriarchs was necessary to Salvation ; therefore to us also . From the Greater . I. If that which is more Likely is not ; much less that which is less Likely . As if a Woman could not be tempted to Sin by an hundred Guinea's , much less by thirty . From the Lesser . I. If that which is less Likely is , much more that which is more likely . As , a Man hath kill'd the King , therefore he will make no difficulty of killing one of his Fellow - Citizens . From Divine Authority . I. The Testimony of a Being Sovereignly Intelligent , Wise , and True , is of greater efficacy to persuade , than any other the most strong and evident Reasons that may be . Thus since God tells us , that they are blessed who are persecuted for Righteousness sake , we are to hold it for an undoubted Truth ; because we have a greater Certainty , that he who is Sovereignly Intelligent , and Infinitely Good , cannot be deceived , than we can be certain that we our selves are not deceived , even in those things that appear most clear and evident to us . For we are to give credit to the Divine Testimony , not because of the Affirmation or Negation , but for the Authority of the VVitness , as being Omnipotent , Omniscient , and of the most Sovereign Veracity and Truth . From Human Authority . I. VVe ought not to oppose that which is owned by all Men , or most Men , or wise Men , or by the most Famous and most Approved of them . As for Example , it is a Truth received by the common censent of all Men ; that we ought to venture our Lives for the welfare and safety of our Native Country : And that it is the Duty of every Man , to live honestly , to hurt no body , and to give to every Man his Right . For this unanimous Agreement of all Men shews , that their Judgment in these Cases proceeds from common inborn Notions , and not from any Compact to impose upon others , or deceive themselves . But yet we must not have the same Opinion of those Men , who being over-credulous , deceive others , by reporting Prodigies which they had from others ; as that there are Sciopodes , Men that have but one Foot , and that so great , that lying on their Backs they can shade their whole Body with it ; or that there are Men that have so great Ears , that they reach down to their Feet , and so broad that they can lye upon them ; and others again that have no Heads , and have their Eyes about their Shoulders : Because we are not to believe every one , but only those whose sufficient knowledge of the Matters they relate , and Veracity , are fully known to us . Two Rules of Demonstrations . I. All Propositions that involve any thing of Obscurity , are to be proved without alledging any thing in proof of them , besides Definitions which have gone before , or Axioms that have already been granted , or Propositions before demonstrated , or the Construction of the thing in discourse , when any Operation is to be done . II. VVe are never to make an ill use of the Equivocation of Terms . This may be occasioned by not adding their Definitions , to restrain or explain them . For to every true Demonstration two things especially are required . First , That in the Matter it self nothing be contained , but what is certain and indubitable : The Other , That there be no fault in the Form of Argumentation : Which Faults we shall avoid by the Rules now given , that is , by not making an ill use of Equivocal Terms , and by using no other Propositions in our Demonstrations , but what are either Definitions of Terms before explained , or Axioms that have been before granted , and which ought not to have been supposed , without being sure of their Evidence ; or Propositions , that have been before demonstrated , or the Construction of the Thing of which we treat , when any operation is to be performed . For by observing of these things all Defects or Mistakes will be easily avoided both in Matter and Form. As to the Constitution of Demonstrations , we have handled it in the Nineteenth Chapter of the Third Part. CHAP. XXIII . Of Genetical Method . I. Themes are two-fold , Simple or Conjunct , HAving largly enough , as I suppose , spoken of Method in general , and of Analytical and Synthetical in particular , it may now be fitting to subjoyn something concerning Genetical Method , because it is of use , and belongs to the true Practice , or Exercise of Logick . Genetical Method , teacheth us to frame a Discourse upon any Theme , and takes it Name from Genesis , because it is as it were a new Generation of a Thing , and that whereby we Elaborate a Theme , that hath not as yet been Explained , or Demonstrated . And for as much as the Theme , or Matter proposed to be known , is either One and Simple , or Conjunct and Complex ; as when for Example , I consider God , or the Power of God , in Creating the World , I consider something that is Simple or Incomplex : But when I set before me this Sentence , God Created the World ( or any other Proposition , whereby any thing is affirmed or denied of another ) I think of something that is Conjunct or Complex . II. How we are to handle a Simple Theme . The handling of a Simple Theme , consists in the seeking of Arguments , that may declare a Simple Theme , and the disposing of them in a due order . Arguments shew us the manner of inventing the Definitions of Single Terms , such as are the Cause and Effect , Genus and Species , the whole and its Parts , Subject and Adjunct , Opposits , Divers , &c. As for Example , if any one seeks for the Efficient Cause of Man , he must have recourse to the Definition of the Efficient Cause , which is , that from which a thing by true Causality doth proceed : Which Definition of the Efficient Cause , if it be referred to Man , presently , either God will be brought to his Mind , by whom he was Created presently after the Beginning of the World ; Or his Parents , by whom all other Men since have been produced . And after the same manner he may find out the Matter of which he is made , the Form by which he is distinguisht from all other things ; and the End for which he was Created by God. III. How the Effects are shewed . So likewise the Effects of Man are manifested by examining the Works that proceed from Man , as the Efficient Cause , &c. and in like manner handle the rest , as far as the Theme propounded will bear : For it is evident , that all Themes will not admit the same Arguments ; seeing God , for Example , hath neither any Efficient Cause , nor Form , nor Matter , and therefore the same cannot be considered of in him . The same may be said of the Angels , and the Mind of Man , which have neither Matter , nor Form , nor consist of any Parts . IV. In a Simple Theme we are to examin the Word . In the handling of a Simple Theme , this order is commonly observed , as far as the nature of Argument will permit : First , To examin the Word of the Theme , whether it be derived , and if so , to give its Etymology : Secondly , Whether it be Ambiguous , and then its various Significations are to be Enumerated and expounded . Thirdly , Whether it be Abstract or Concrete . V. The Genus . In the Second Place , we must enquire into the Genus , from the Predicamental Table set down in the First part , Chap. V. which represents all the Genera and Species , which conduceth much to the knowledge of the Theme , forasmuch as the manner of handling Themes varieth according to the Diversity of the Genera . VI. The Causes . Thirdly , We must enquire into the Causes , which we have set down and Enumerated , First part , Chap. IX . VII . Effects . Fourthly , The Effects are to be considered ; not every one , but such as are Memorable , and worth the Mentioning . VIII . Adjuncts . Fifthly , The Adjuncts are to be handled according as the Theme is , whether Universal or Proper ; as also the Antecedents and Consequents . IX . Definition . In the Sixth Place , Definition , which , as soon as we have have found out the Genus and Difference , doth present it self unto us . X. Division . Next comes DIVSION , whereby the Subject is divided into its Integral Parts , if the Theme be an Integral Whole ; or into Species , if it be a Genus . XI . Comparates . In the Eighth Place , COMPARATES , or Things that agree in Quantity or Quality . XII . Opposits . Lastly , OPPOSITS , are subjoyned to all these , and are of considerable use , according to that common Saying , Contraries set together , Illustrate each other . XIII . How a Conjunct Theme is to be demonstrated . A Complex Theme , or Proposition is Genetically Demonstrated from the Subject and Predicat , which as two Integral Parts do constitute the same . Because by them we judge , whether a Proposition be True or False , Universal or Particular , Necessary or Contingent , Affirmative or Negative . As suppose this Conjunct Theme be to be proved , Man is Created after the Image of God , we are to consider both the Parts , viz. the Subject Man , and the Predicat , the Image of God , after which Man is said to be Created : Next the Quantity and Quality of the Proposition are to be Examined : And Lastly , The Reasons or Arguments of the Affirmation are to be investigated from the nature of the Subject and Predicat . XIV . How the Subject is to be considered . The Subject Man furnisheth us with Reasons or Arguments . First , From the Efficient Cause , because the Holy Trinity entred as it were into Consultation about the Creating of Man , which was not done in the other VVorks of the Creation , which is an Argument of a peculiar Prerogative of Man , before other Creatures , which consists in that he is an Image of God. Secondly , From his Matter , because he is made with a Face , directed towards Heaven , &c. Thirdly , From his Form , because he only of all sublunary Creatures , had a Mind breathed into him . Fourthly , From Singular Effects , which are the Evidences of a peculiar Virtue bestowed upon him . Fifthly , From his Adjuncts , because he excells all other Creatures , by the Power he has of Understanding , and determining himself . Sixthly , From his Definition , because he is a Substance consisting of Mind and Matter . Seventhly , From the Place of Comparats , because he comes near to the nature of the Angels ; and Ninethly , From that of Opposits , because he is not a Beast , devoid of Reason . XV. How the Predicat is to be considered . The Predicat , made after the Image of God , doth also afford us Arguments taken from the Nature of the Divine Image ; viz. from its Formal Reason , or from its Effects , Adjuncts , Parts , Definitions , Comparats , Contraries , &c. which Theology handles at large . Books . 1. Part. 2. Introduction To the Honourable Dr. John Fielding Arch-Deacon of Dorsett &c.w. This Plate is humbly Dedicated by Richard Blome The Second Part OF THE INSTITUTION OF PHILOSOPHY . Viz. Natural Theology , OR , A TREATISE CONCERNING GOD. An Introductory Discourse Of the Definition of Natural Theology , and its Certainty . I. Why Natural Theology is set before the other parts of Philosophy . SOME , it may be , will find it strange that I have given NATURAL THEOLOGY the precedence before other Parts of Philosophy , and that I betake my self to the demonstration of the Existence of GOD , and of his Perfections , before I have handled the Nature of Corporeal Things . But their Wonder will cease , if they consider how necessary Natural Theology is to other Disciplines , and of how great concern the knowledge of the Divine Existence is , for attaining a firm and evident Knowledge of all other Things . For seeing that GOD is the Author of the VVorld , and all things that are in it , and the Original of all Truth , the Knowledge of him is to be premised , of whom all Certainty and Truth of Science doth so closely depend , as that without it no Evidence or true Knowledge at all can be had . For since Science cannot be had but from First Causes , how will the same be attainable by us , if we do not know them ? Seeing it is the Nature of First Principles to be Clear and Evident ; and that the Knowledge of other things do so depend upon them , th●t tho' Principles may be known , tho' the things be unknown ; yet the things themselves can never be known , except the Principles be known : Seeing therefore that GOD , the Author of All Created Beings , is ( according to S. Austin ) the Light of all things knowable , and the Good of all things to be done ; we must Know him , before other Causalities can either have a Being , or be exactly known by us . II. All Geometrical Demonstrations derive their Evidence from the Existence of GOD. Notwithstanding that Geometrical Demonstrations be of that Evidence as to force our Assent , and being once clearly perceived , do no longer leave any place for doubting , as long as we attend to them ; yet will they cease to appear such , if we be ignorant of the Existence of God. For how can we know , but that we are made with such Natures as to be deceived in those things that appear most evident to us ? For we cannot be convinc'd to the contrary , except we first know God to Exist , and that He is the Fountain of all Truth , and hath not given us such Understandings , as to be deceived in the Judgment we make of things that we do most clearly and distinctly comprehend . III. We cannot be certain that any Conclusions are true , but only so long as we do give heed to the Premisses . True it is , that our Mind is conscious to several Idea's in it self , in the Contemplation whereof it never finds it self deceived , as long as it neither affirms nor denies ought concerning them . It is certain also , that it finds in it self Common Notions , whence it frames several Demonstrations , which it persuades it self to be very true , as long as it gives heed to the Premisses from whence it deduceth its Demonstrations . But because it cannot continually give its attention to them , and often forgets them , it may afterwards easily come to doubt of their certainty , if it have not a clear and distinct Conception of God , that is , except it be assured that God is True , and that it is repugnant to his Nature to be a Deceiver . For as Cartesius saith in his Fifth Meditation , Tho' I am of that Nature , that as long as I clearly and distinctly perceive any thing , I cannot but believe it true ; yet because I am also of that Nature , as not to be able always to fix the intention of my Mind , upon one and the same thing , in order to my clear perceiving of the same ; and that I oft call to Mind a Judgment I have made before , when I no longer attend to the Reasons , upon which I judged it to be such , other Reasons may be alledged , which might remove me from my Opinion , if I were Ignorant of the Existence of God ; and consequently should never have any true or certain Science concerning things , but only Fleeting and Mutable Opinions . IV. This confirmed by an Example . Thus he who considers the Nature of a Triangle , is indeed forced to conclude , that its Three Angles are equal to Two right ones , neither can he think otherwise as long as he attends to its Demonstration : But yet as soon as he turns the bent of his Mind from it , tho' he remembers that he hath clearly perceived it , yet he may easily question the truth of it , if the Existence of God be unknown to him . V. An Objection taken from Atheists . If it be said that Atheists , who deny the Existence of God , do notwithstanding clearly understand general Axioms , such as these , Equal Quantities added to Equal , make the whole Equal ▪ Those things which agree in a Third , do agree amongst themselves ; and such like : From which they easily Demonstrate , that the Three Angles of a right Angle , are Equal to Two right ones . And that it is a thing apparent to all that are skilled in the Principles of Geometry , that the Square of the Basis of a Triangle , is equal to the Square of the Sides : So that it is possible to have true knowledge , without supposing the knowledge of God. VI. Answered . I Answer , That it cannot be denied , but that Atheists have a clear knowledge of Geometrical Demonstrations , and that they are so evident , as to force their assent : But yet this knowledge of theirs cannot be said to be true Science , founded upon certain Principles : Because no knowledge deserves the name of Science , that can in the least be called in doubt , and whose certainty doth not depend on an evident Principle . Now forasmuch as these Men are supposed to be Atheists , neither can they be certain that they are not mistaken in those very things , which they think themselves to have most clearly apprehended . And tho' it may be this doubtfulness do not trouble them at present , yet it may hereafter , upon their examining of the matter , or upon its being started by others ; neither can they ever be secured from this Hesitation , without owning God to be ●he Author of their Being . VII . Natural Theology influenceth all human Disciplines . NATURAL THEOLOGY Transcends all the Parts of Philosophy ; and as the Sun , that Enlightens all the World , is diffused through all Arts , and Sciences : For who is there , that considering the Works of God as he ought , doth not admire his Power , Goodness and Wisdom , and is not raised thence to the Knowledge of Him ? Do not the Earth , the VVater , Vegetables , Animals and Stars , all lead us to the Understanding of Him ? For all things have relation to God , as to their First Principle , and proclain him to be the one Supream cause of their Being . For how is it possible for him , who attentively considers the Connexion of Bodies , the Motion of the Stars , the Vicisisitude of Seasons , the Succession of Generations , the orderly Disposition of the Parts of the VVorld , not to discern the Wise Author and Orderer of all these ? VIII . The rest of Bodies proves an Intellectual Principle . Bodies have no power to move themselves ; how can therefore their so orderly Motion be perform'd , but by some Intellectual Being , by which as their Effective Principle , they are disposed , and directed to their appointed end ? Wherefore Lactantius was of Opinion , that no Man could be so Ignorant or Savage , but that , lifting up his Eyes to Heaven , tho' he may not know by whose Providence all these things are govern'd , yet must needs understand from the Motion , Disposition , Constancy , Usefulness , and Contemperation of things , that they are under a wise conduct ; and that it is impossible , that what is so wonderfully framed and ordered , must be managed , by the highest Counsel and Wisdom . IX . What Natural Theology is . From what hath been said it appears what Natural Theology is , viz. the Knowledge or Science of God. For Theology is divided into Natural and Supernatural ; Supernatural is called that which is fetched from Holy Scripture , and which , by the assistance of Supernatural Light , attains Divine Truths : Natural , is that , which declares and demonstrates the Existence and Attributes of God , from the Book of Nature , and from Principles , derived from the Light of Nature . X. How useful the same is to Atheists and ungodly M●n . Wherefore , this Natural Theology is very profitable for Unbelievers , and Wicked Persons , that are Theoretically so , who cannot be brought to any Religion , except it be first demonstrated to them , that God Exists . As also for those who are Practical Atheists , that is , who live , as if there were no God , no Providence , no Reward after this Life , nor any Punishment ; for how will these be able to defend this their Opinion , after that they are once convinced , that there is a God , and that his Attributes , are not only shadowed out in all things throughout the whole VVorld , but besides are most clearly represented in their own Souls ? XI . The Certainty of Natural Theology . The Certainty of Natural Theology doth plainly appear , in that it is required to the laying of the Foundations of Human Disciplines , and in that without the knowledge of God , no solid Knowledge can be had of any thing whatsoever . He cannot be called a Philosopher , who is destitute of the knowledge of God , and who doth not worship him as he ought . Hence Des Cartes 1. Princ. Artic. 29. proves the certainty of the Natural Light given to him by God , by this Argument , because God is True , and that he is the Original and Principle of our Intellect . CHAP. I. What God is , and how he may be reached by us . I. We are to enquire what God is , before we enquire whether he is . FOrasmuch , as according to the Rules of Logick , we are never to enquire , whether a thing be , before we conceive what it is : I suppose it needful to examin , what the Nature of God is , and what is included in the Essential Conception of him , before that I proceed to the Discussing of the Point , how his Existence comes to be known to us . II. All Men agree in the knowledge of God. The first of these will not be difficult , if we only follow the Judgments of Men , that ever had any Opinion of God : For I believe , that Men do less disagree in this , than in any other Opinion whatsoever . There is no Man that ever heard any thing of God , but doth acknowledge him to be a Substance Infinite , Independent , of the Highest Understanding and Power , and the Creator of all things that are . Or if he doth not distinctly conceive thus much , yet at least must own , that all Perfections that can possibly be conceived by Man , do belong to him in the highest and most perfect manner that can be . III. Tho' God be infinite , yet doth he not therefore exclude all Finite Beings . It may be some will here Object , that if God be an Infinite Being , or such a one as comprehends all manner of Perfections whatsoever , he must necessarily exclude every Finite Being , and so nothing would exist besides him . But the Falsity of this Reasoning is apparent ; for we cannot conclude , that , because a Man hath a more excellent Wit than others , that therefore others have no Wit at all . Or supposing his Wit to encrease to Infinity , would this diminish the less Portion of Wit possest by others ? Thus , tho' God be consummate in all manner of Perfections , yet doth not he therefore exclude all other Beings ; except we should conceive God to be Corporeal and Material ; for indeed if he were Corporeally Infinite , he must exclude all other Bodies . But if we should conceive God to be Corporeal , we cannot suppose him Infinite , that is , comprehending all manner of Perfections , because then he would be Divisible , and lose his highest Simplicity and Unity . IV. Gods Perfections are only Infinite . But some will urge further , that it is of the Nature of a most perfect Being , to include all manner of Perfections , and therefore it is necessary for him , formally to comprehend whatsoever Perfection is in the Creatures . To which I Answer , That the Antecedent is false , for seeing that the Perfections of the Creature are Finite and imperfect , they cannot be in God , because otherwise God could not be the most Perfect Being , as containing imperfections in himself . Wherefore we ought rather to say , since God is the Highest Being , he includes only Infinite Perfection , and excludes all other . V. How God is said to be Infinite . God is said to be Infinite , because he is without all Bounds , not only as to his Essence , but also as to his Duration , as being a necessary Being , and Subject to no Change or Mutability . VI. God is Independent . He is said to be Independent , because he derives his Being , from none besides himself . Which yet is not so to be understood , as if God did depend of himself , as of an Efficient Cause , since it might be still further enquired , whether that Cause had its Being from it self or from another . But that he is possest of so great and immense a Power , that he doth not stand in need of the help of any Being , for his Existence and Conservation ; and that therefore in some Sense , God may be said to be the Cause of himself . VII . In what Sense God is said to be Positively of himself . You will say , that Divines will not allow this way of Speaking , as abhorring to admit the notion of Causality in God ; and therefore when they would explain How God is from himself , they say , that that ought only to be understood Negatively , that is , God is not of another , but by no means positively of himself , as of a Cause . I Answer , That it is true , that God is of himself Negatively , or which is the same thing ; that he is not beholden to any Cause for his Existence ; but withal do assert , that this Negation is not sufficient to explain the Nature of God , without admitting something that is positive , by which he continues to be or exist ; and this we say is nothing else but his Inexhaustible and Incomprehensible Power ; for it is certain that the Power , Efficacy and Vertue which we conceive in God , is the most Positive , Perfect and Real that can be : And therefore , forasmuch as God exists by reason of his Nature , or the Perfections that are in him , who can question but that he is positively of himself ? For if the first Man had been from Eternity , so as nothing had been before him , yet forasmuch as the Parts of Time in which he Exists , may be separated from each other ; and because from his Being to Day , it doth not follow that he shall be to Morrow , except there be some cause to renew him , and as it were , to produce him anew every Moment ; we make no difficulty to assert that the Cause which thus preserves is something Positive . Thus notwithstanding God hath been from Eternity , yet because he himself preserves himself , we may conclude he is of himself , not only Negatively , but Positively , inasmuch as his Immensity is the Cause of the Perseverance of his Being . VIII . This Argument further urged . But you will say , if God be positively of himself , he will be his own Cause , or the Cause of himself , since he does the same with reference to himself , what the Efficient Cause doth with respect to its Effect . Now to say , that God is the Cause of himself , sounds harshly in the Ears of some Divines , and is looked upon as an Error . IX . Answered . I Answer , that God may be said , in some manner to be the Cause of himself , inasmuch as he is positively preserved by himself , as long as by the word Cause we do not understand the Efficient , but only the Formal Cause ; so that the meaning of that Expression will be no more than this , that the Immensity of the Divine Essence , is the Reason why he doth not stand in need of any Cause for his Existence or Conservation ; or that the Divine Perfection is so great , that he his the Reason of his own Existence , not diverse , but inseparable from himself . Which is not so to be understood , as if God by a Positive Influx did conserve himself , as all Created Beings are conserved by him ; but only that this supreme Power , and the Immensity of his Essence is such , that he stands in need of no Conservator . But now who will pretend , that this Immensity of the Divine Power is not a most positive thing ? When therefore it is demanded why God Exists , we must not answer , by an Efficient Cause ; because that is properly called an Efficient Cause , where the Cause is distinguisht from the Effect , and where the Effect is supposed different from the Cause ; but we are to Answer , by the Essence of the Thing or the Formal Cause , which bears some Analogy with the Efficient . X. God is conceived by all as supremely Intelligent . GOD is also acknowledged to be a Being of Soverening Wisdom and Understanding , because nothing is hid from him , and because al past , present and future things are Naked , and open before him . XI . As most Powerful . Moreover God is acknowledged to be most Powerful , because he Rules over all , and can produce whatsoever doth not imply a Contradiction . XII . In what sense God is said to be the Creator of all things . He is also owned to be the Creator of all things , because all things depend on Him , not only to their Being , but also with regard to their Conservation . For since Infinite Power is included in the Idea we have of God , it is a Contradiction , that any thing should Exist , which is not produced by him . XIII . God may be known by us , tho' not comprehended . Under these Attributes it is , that God may be known by us : For we have a clear and distinct knowledge of God as he is . A Being Infinite , Omnipotent , Eternal , Omniscient , and the effective Principle of all things . And he may be thus defined by us : A Being thinking in Perfection ( or most perfectly thinking ) Simple , Unchangeable , Eternal , Consummate , Necessary , Immense , Incomprehensible , Omnipotent , and of which all things depend , not only with regard to their Nature and Existence , but also to their Order and Possibility . Neither is it any Contradiction to what hath been said of our knowing him , that he is declared to be Incomprehensible : For it is one thing to know a thing , and another to comprehend it : I own that we who are Finite cannot comprehend the Infinite Essence of God , since it is of the Nature of Infinity to be Incomprehensible : But it is no Contradiction to say , we may know that which is Infinite , that is , clearly and distinctly apprehend a thing to be such , that no bounds or limits can be found in it , or set to it . XIV . A Objection fetch'd from the Divine Incomprehensibility . You will oppose , That if the Weakness of Man cannot aspire to the comprehension of that which is Infinite , he will never be able to conceive the Notion of that which is so , but only of that which is Finite : For who will say that he sees a Man , when he sees only one Hair of his Head ? Now there is less proportion between a Finite thing and an Infinite , than there is between one Hair of a Man's Head , and his whole Body . XV. We may have an Idea of God , without comprehending of him . I Answer , That it is not at all needful , in order to our having the Notion of an Infinite thing , than we should comprehend all its Perfections , this being sufficient if we find no bounds or limits in it ; because then we understand the whole Infinite , tho' not Totally , as the Schools term it , and as to every one of its Parts . Who dare say that I have not the Idea of a Triangle , when a Figure comprehended within three Lines is represented to my Mind ; tho' it may be I am ignorant , that its three Angles be equal to two right ones ? And so in like manner I may have an Apprehension or Notion of God , without comprehending all his Attributes . For if it were otherwise , I should understand nothing at all , when mention is made of the Worship of God , his Works , Mercy , or Justice . For it is not of the Essence of an Image , that it be in all things the same with the thing it represents , but only that it be in some degree like it . XVI . The word Cogitation is Equivocal . But yet we are to observe , that the word a Thinking-Being , or Substance , is Equivocal when attributed to God and the Creatures ; because the Cogitation , which constitutes the Nature of God , is Independent and Perfect , and that which constitutes the Nature of a Created Spirit is Imperfect , and dependent of God : Wherefore to mark this difference , I say , that the Cogitation , which constitutes the Nature of God , subsists by it self ; whereas that which constitutes the Nature of a Created Spirit , subsists indeed in it self , but not by it self . CHAP. II. By the Inborn Idea that is in us , we know that GOD exists . I. What we are to understand by the word Idea . BY the word IDEA , we understand that form of our Cogitation , by the immediate apprehension whereof we are conscious of the said Cogitation : So that we can express nothing , without having formed an Idea before of it in our Minds . Or to express it shorter , An Idea is nothing else but the thing it self perceived or thought of , as it is Objectively in the Understanding . Wherefore every Idea includes two things , the one Formal or Proper , inasmuch as it is an Operation of the Mind ; the other Objective , as it is the Image of a Thing thought , or is instead of it . II. What distinction there is betwixt Idea's . In the Second place we are to tak notice , That tho' there is no inequality in the Idea's of our Mind , as they are Modes of Thinking ; yet are they very different with respect to the things which they represent . For it cannot be question'd but the Idea , which represents Substance to me , contains more Objective Reality , than that which represents a Mode , or any thing else adventitious to a perfect or compleat Substance . And so that Idea which represents to me an Infinite Being , All-powerful , All-wise , Eternal , &c. doth undoubtedly contain more Objective Reality , than that which expresseth Substances that are Created , Dependent , Mortal , &c. For seeing that these Idea's are something , they must have a Cause of their Existence , and consequently have so much the more Reality , as the things they represent have of Entity . III. Whatsoever is in the Effe●t , is formally or eminently in its Cause . Thirdly , we are to observe , That there is nothing found in any Effect , which is not Formally or Eminently contain'd in its Cause . A thing is said to be Formally in its Cause , when it is such there as we perceive ; but Eminently , when the Cause can supply its stead . Thus Fire , when it produceth heat in a Body , is said to contain it formally , because it hath the very same thing in it self , which it hath produc'd in the Body ; but the Sun and the Earth , when they produce Fruits , do not comprehend the thing caused by them Formally , but Eminently only . This Notion is the First of all others , and is as evident , as that Nothing can be made out of Nothing : For should we admit that something is contained in the Effect , which is not contained in the Cause , we must own that Something may proceed from Nothing . Neither can we give any other Reason , why Nothing cannot be the Cause of any thing , but because in it there cannot be found what is in the Effect . IV. From the Idea we have of God , we conclude that God is . Wherefore we conclude from the Idea we have of God , that he exists ; which is , First , thus demonstrated : Every thing represented by an Idea must have a Cause , in which it is either Formally or Eminently contained ; but we have an Idea of God , as he is a Most perfect Substance , excluding all Limitations : Therefore this Idea must have GOD for its Cause . The Minor is thus proved : There is nothing found in all Created Beings that can afford us this Idea : For tho' I can form the Idea of a Substance , because I my self am a Substance ; yet will this Idea never represent an Infinite Substance , because I my self am Finite and of bounded Perfections ; wherefore it is necessary that if I have an Idea of an Infinite Substance , it must proceed from God alone , who is Infinite . V. An Objection answer'd . If you argue , that this Idea may be formed from the several Perfections scattered up and down in the several Parts of the Universe ; after the same manner as from the Notion of an Angel , and my own Mind , I can frame an Idea of a Divine Understanding . I answer , How can I from the several Endowments of diverse Things , frame a Being that is absolutely Perfect ? Shall I do it by enlarging and extending those Images ? But whence have I the Faculty of enlarging all the Perfections of Created Things , and concerning something that far exceeds them all ? We ought rather to conclude , that this is , because the Idea of a most Perfect Being is impress'd upon my Mind . Moreover , the supream Perfection of God consists in this , That all his Perfections are not separate , as in the Creatures , but in conjunction with the most absolute Simplicity and Unity . VI. No Idea of an Infinite Being is contained in the Idea of a Finite Being . And tho' the Idea of an Infinite Substance , which most perfectly includes all the Perfections our Mind can conceive , may also contain the Idea of a Finite Substance , ( as a Multitude contains an Unity , and a greater Number a lesser ; ) yet is not the Idea of an Infinite Being , contain'd in that of a Finite Being . And therefore Des Cartes in his Third Meditation says thus : I manifestly understand , that there is more Reality in an Infinite Substance , than in a Finite ; and therefore that the Perception of an Infinite Being , is in some sort precedent in me , to that of a Finite Being , that is , the Idea of GOD , to that of my Self . For how could I understand that I Doubt , that I Desire , that is , that I want something , and am not altogether Perfect , if there were not in me the Idea of a more Perfect Being , by comparing my Self with whom I discern my own Defects ? VII . That which is Perfect cannot proceed from that which is Imperfect . Secondly , That which is perfect cannot proceed from that which is imperfect , as from its Total and Efficient Cause : But we , as all other Creatures , are Imperfect ; and the Perfections which are in God , are neither Formally nor Eminently contained in us : So that the Idea of GOD , which contains all his Perfections , cannot be thought to proceed from us , and consequently God must be the Cause of it ; and because He cannot be the Cause of it , except He do exist , we may undoubtedly conclude that He doth so . VIII . The Idea of God is inborn in us , If any one ask , whence we have this Idea , since it doth not proceed from our Senses , nor from any Created Being ? My Answer is , That it is born with us , as the Idea of our Selves also is : For God impress'd it upon every Man in his Creation , and hath so order'd it , that every one should understand and know God by the same Faculty whereby He knows himself . For it is impossible that any one should understand himself to be imperfect , depending on another , and of uncertain Duration ; but that at the same time he must also understand Him , with whom compared , he is imperfect , and on whom he depends ; so that reflecting upon himself , he concludes that God is , and by the Idea which he hath of him , is convinc'd of his Existence . I say , by reflecting on himself ; for by the impression made upon us by God , we are not to understand that this Idea is always actually represented to us ; for were it so , we should always think of God : But by this Impression is meant nothing else , but that God hath vouchsafed such a Faculty to Man , whereby he can excite this Idea in himself , without the help of any other Idea's whatsoever . IX . The Idea of God cannot be said to be invented by us . It cannot be said , That this Idea is framed ●r invented by us , as many Notions are , which ha●e no other Existence , but what they have in our Understanding ; because nothing can be added or taken away from this Idea , for the Essences of things are indivisible : So that if any Thing could be added to any Idea , representing the Nature of a Thing , it would be no more the same , but another Idea . And tho' new Perfections may still be perceived in God , which were not known before ; yet doth not this change the Idea of God , but only makes it the more clear and distinct ; no more than the Idea of Man is increased , when some new Properties are discover'd in him , which before were unknown , because they ought to have been included in the Idea which we had of him befor e. X. An Objection to prove , that the Idea of God is framed by us . But you will farther urge , That Man who has this Idea is a free Agent , and that consequently he can frame the same at pleasure . And Des Cartes seems to hint as much in the Beginning of his Fifth Meditation , where after he hath said , That innumerable Idea's of Things are found in his Mind , adds , Which tho' they be in some sort thought by me at pleasure . Now if we can think of Objects according to our pleasure , why may we not say , that the Idea of God is framed by us , whilst we are thinking of it ? XI . Many things ●ocur to our Thoughts , which tho ▪ they do not Exist , yet have their Nature . I Answer , That Idea's do indeed depend on us , as far as they have a formal and proper Being in our Mind ; but not as they are considered in their objective Being ; because in that respect they have a necessary Cause . I own it to be in our power , to think , or not to think of any particular Object , and that we are thus free by a liberty of Contradiction , or by a liberty as to the Exercise of the Act , as the Schools express it ; but that it is not in our power , to think differently of the same thing that is true , that is , we have no liberty of Contrariety , and as to the Specification of the Act. For it doth not depend on our Will to think the Number Nine to consist of three Ternaries , and not to consist , or to be an Even or Uneven Number , &c. Neither can we conceive a Substan●e absolutely perfect , as Existing or not Existing , Wise or Ignorant , Merciful or Cruel ; but must necessarily conceive him necessarily Existing , All-wise , and All good . Where●ore when Des Cartes faith , That many Idea'l are found in him , which it may be have no Existence , besides his Cogitation , he presently subjoynd ; yet are they not feigned or inven●ed by me , but have their true and unchangeable Natures . XII . The Idea we have of God , is not derived from our Parents . Neither doth it contradict our Assertion , what some say , That we have deriv'd all the Knowledge we have from our Parents , who having receiv'd the same from the first Men , afterwards commnicated the same to us , and that consequently the Idea we have of GOD is not inborn , seeing that this Objection seems rather to confirm the Idea of GOD to be inborn in us : For let us ask them , from whom those first Men had this Idea ; if from themselves , why may not we have it as well ? If from GOD revealing the same to them , then they must own GOD to Exist . CHAP. III. That it belongs to the Nature of God to Exist . I. Whether Existence doth appertain to God. I Have evidently enough , as I suppose , Demonstrated in the foregoing Chapter , that because I find in my self the Idea of a Being absolutely Perfect , therefore that Being must Exist . Now I proceed to shew whether the Existence of God , can be proved from the consideration of his Nature , and whether a Possible only , or a Necessary Existence do belong to him . II. The Existence of any thing may be enquired into after a two-fold manner . Two Questions may be formed of a thing that Exists in Nature , the one with respect to our Knowledge , the other with repect to the Thing considered in it self . By the First , the Reason is sought , why any thing , suppose God or the Soul , is affirmmed by us to Exist : By the Second we enquire , how it comes to pass , that the said thing is not only Possible , but really Existent . By either of these ways we may enquire after the Existence of God , for we have Reasons that not only assure us that God Exists , but also that this his Existence is necessary . III. The Idea of an Infinite Being prove its Existence . Neither will it be hard to Demonstrate this , if we attend to the Idea we have of God , viz. that he is Infinite , all Powerful and all Perfect : For we argue thus : Whatsoever we clearly and distinctly perceive to belong to the Essence of any Thing , the same we know to be true as we perceive it ; but we clearly and distinctly understand , that it belongs to the Essence of God that he Exists ; therefore it is true that God Exists . The Minor is thus proved ; It is a contradiction for a most perfect Being , to want any Perfection ; but Existence is a Perfection ; therefore God cannot be conceived , but Existent . For since where a Multitude is , there must needs also be a Unity ; therefore since God possesseth all Perfections conceivable , he must of necessity also have Existence . IV. The Existence of God is necessary . Neither doth it oppose the Truth of what hath been said , that in all other Created Beings , the Essence is distinguisht from their Existence ; and that it doth not follow , that a thing doth exist because we have a Notion of it . For the Reason thereof is , because in the Idea of all other Things only Possible , and not actual Existence is contained , whereas the Nature of God includes actual , necessary and Eternal Existence : So that it is as impossible for us to conceive a Hill without a Valley , as to conceive an absolutely perfect Being , to whom any Perfection is wanting , or who is not Existent : For as Cogitation supposeth the Existence of a thing Thinking , for if it had no Being , it could not Think : So absolute Perfection presupposeth necessary Existence , since nothing can be conceived absolutely perfect , except it Exist . V. Existence is a Perfection without which the nature of God cannot be conceived . Wherefore in this point , we differ from Gassendus , who denies Existence to be a Perfection , or the Propriety of any thing , but that which adds neither Perfection nor Imperfection to a thing . Because when we attend to the Notion of God , we perceive , that Existence is a Divine Property , and no less belongs to God than Omnipotence or Immensity , &c. or that an equality of Angles belongs to two Right ones . Because it belongs to the Nature of God to be ; neither can he be conceived without Existence . For would not something be wanting in God , in case he did not Exist ? Or how otherwise could he be said to be a Being absolutely perfect ? Since Existence is nothing else but the Reality of any thing , whereby it is placed out of Nothing , which therefore no Being absolutely perfect , can be supposed to be without . For as Cogitation presupposeth the Existence of the thing that Thinks ; so likewise , absolute Perfection requires Existence ; because an absolutely perfect Substance cannot be conceived , but as actually Existent , and unchangable from Eternity . VI. Objection . You will say : Tho' we cannot conceive a Mountain without a Valley , yet it doth not follow thence , that there is any Mountain in Nature , since a Mountain doth not include Existence : And therefore neither doth it follow that God Exists , because I conceive him as Existent . For there is no necessity laid upon things to Exist , from my Thought or Apprehension . VII . Answered . I Answer , That this Argument doth not proceed aright ; for tho' a Valley enters the Conception of an Hill , and neither can be apprehended without the other , yet is it not inferred thence , that either a Mountain or Valley doth Exist ; but that whether they Exist or do not Exist , they cannot be separated from each other . But seeing I cannot conceive God without Existence , I must conclude , that Existence is inseparable from him , and that therefore God cannot be conceived , but as Existing . VIII . An instance urged against this Answer . But you will further urge , that the Sun Existing doth essentially involve two things , viz. the Sun and the form of Existence , so that Existence belongs to this complex Notion of the Sun Existing . But Gods knowing this complex Notion from Eternity , doth not impose a necessity of Existing upon the Sun , without presupposing its actual Existence in the World. So likewise tho' Existence be contained in a Being absolutely perfect , yet cannot we conclude thence that it actually Exists , except we suppose it to include Existence , as well as the other Perfections . IX . The instance Answered . I Answer , That in the Idea of an Existing Sun there is only a Possible , but not a necessary Existence contained ; because we do not understand that actual Existence must of necessity be joyned with the Properties of the Sun ; for tho' it be conceived as Existing , yet doth it not follow thence that it doth Exist ; forasmuch as this complex Notion , the Existing Sun , may be framed by the Understanding ; and that these two Notions may be separated , not only by Abstraction , but also by a clear and distinct Operation , so as that the Sun may be conceived without Existence . Whereas , in the Idea of God actual and necessary Existence is involved , which hath an inseperable Connexion with the rest of his Attributes . So that it is impossible to conceive an Infinite Being to have all Perfections , except it do actually Exist . For necessary Existence is the Property of God , which agrees to him alone , and makes a part of his Essence . X. The Idea of every thing doth not argue actual Existence . Wherefore , when we enquire , whether the Existence of a thing absolutely perfect can be inferr'd from its Idea , the Question is not , whether out of every Conception or Idea of a thing , we can Demonstrate its Existence ; but only whether from the Idea we have in our Mind of a Being absolutely perfect , we may rightly conclude its Existence . For it is a Fallacy , when we bestow an Attribute , that agrees only to one Subject , upon all . Wherefore I do rightly and demonstratively conclude , that if necessary Existence be contained in the Idea of God , that is , if by a clear and distinct Perception , I cannot divide actual Existence from his Nature , God must necessarily Exist ; by the same necessity that the Nature of Man doth consist of Soul and Body , and that a Valley includes the Conception of an Hill. XI . The Essence of God is not a Figment of our Understanding . Some with whom I have Discoursed about this Point , deny the Essence of God to subsist any where but in our Mind , and that it is nothing else but a figment or thing feigned by the Understanding . But this is easily overthrown by shewing , that necessary Existence is not included in any Fiction of our Understanding . Besides , the Essence of God is either Possible , or Impossible ; if they grant the first , it must necessarily Exist ; for what other thing can impart Existence to a thing that is Possible ? If they say it is Impossible , it will lye upon them to prove the Contradiction it implies . XII . The Existence of God may be proved from the Conservation of us . The Existence of God may also be proved from our continued Preservation . For seeing that a Creature hath no power to preserve it self , we must have recourse to some Cause that preserves it . Time we know is divided into many Parts , which are independent of one another ; since a Thing under Duration , may every particular Moment cease to be ; neither doth it follow , because it was yesterday , that it must be to day ; wherefore there must be some Cause to preserve it , and as it were to produce it anew every Moment , which its self cannot do , no more than it could at first give its self a Being . For Conservation is not distinguishable from Creation , but only by Reason ; neither is there any less power required to Conserve a thing , than to produce it : Neither can Parents do this , since they only procure some Dispositions in the Matter , to prepare it for the Reception of the Soul , and we may Live after they are Dead : Wherefore there must of necessity be some first Cause , which may not only create and produce us , but also keep and preserve us . XIII . How it is to be understood that things cannot preserve themselves . If you oppose to what I have here alledged , the Law of Nature set down by Des Cartes : That every thing , as far as in it lies , endeavours to continue in the same State , neither is ever changed , except it be forced to it by a foreign Agent ; and that according to this Law , every thing which Exists , must continue always to Exist , neither stands in need of any new force , whereby to be sustained in its Essence . I Answer , That whatsoever is besides God , is a Being depending on another ; and whatsoever once essentially depends on another , must of necessity , for always so depend on it , because what is Essential admits of no change ; and so great a Virtue is required in an Independing Being , that all things depend on it , as in the First Moment , so also in the Second , Third , &c. Wherefore when it is said , that every thing , as much as in it lies , continues in the same State ; this must be understood with regard to the Perfection or Nature which hath been given to it , to which God who is constant and unchangeable , is supposed to afford his continual concourse . XIV . An account of what is to be handled in the following Chapter . Tho from the Idea we have of God , and from the Contemplation of him , and our own Conservation , his actual Existence is evidently deducible ; nevertheless we will also endeavour to make out the same from all Sensible Objects . This was not undertaken by Des Cartes , forasmuch as he being chiefly intent on the Idea of God , had not yet discovered Material things , and therefore could not properly alledge any Argument from their Production . CHAP. IV. The Contemplation of the World proves the Existence of God. I. The first Argument for the Existence of a God from the Fabrick of the World. ALmost all the Philosophers that ever duly considered the Miracles of Nature , constantly acknowledged an Eternal Godhead , by whose out-breathing all things are Quickned , and receive Life and Heat . For who is there so stupid , who from the Stupendous Structure of the World , the continual Rotations of the Heavens , and the never discomposed order of Nature , doth not necessarily infer , that there is a Supreme Creator , who doth govern the World , as Boethius saith , by Perpetual Reason , at whose command Time is , and who being Stable , and Immoveable himself , imparts Motion to all things ? What else doth the vast extent of this World , the variety of things therein contained , the Beauty of its Parts , the constancy of its Motions Preach to us , than that there is a great Moderator , who is the Author of this Transcendent Structure , and the Original disposer of this Harmonious Order ? We all are link'd to God , a silent Breast , His Temple is . — What is the Place of God but Heaven and Earth The Air and Seas , to which he 's given Birth ? What but a Vertuous raised holy Mind ? Where if we can't , we 'l scarce him elsewhere find . All that thy Gazing Eye doth see , and all That doth thee move , is that which God we call . Lucan . lib. 9. II. Order supsposeth an understanding Artificer . I will own that some mean Philosophers , may rest in the Contemplation of Second Causes , and ●●●tertain their Minds with the consideration os Natural Objects , without looking further . But it is impossible , that he who attentively considers their Subordination , and diligently weighs their Connexion , should not be forced to own a Creator of Heaven and Earth , and acknowledge his perpetual Providence , except ( as Aristotle saith ) he be so unhappy , as to be fallen into the deepest Gulf of Blindness and Misery . But that we may illustrate this a little by an Example , Let us suppose that Protagoras , or some other Atheist , had got a view of Archimedes his Glassy Sphear , in which the Heavens , I say , perform their several Motions ; where the Sun and Moon do by degrees withdraw themselves towards the East , and being hurried along by the Primum Mobile , are whirld about , within the space of Twenty four hours ; Do you think that Protagoras would have believed this Machine , to have been jumbled together by Chance , by a Fortuitous Concourse of the Parts , and not much rather that it was the effect of Art , and of the Brain of a most Subtil and Accomplisht Mathematician ? For seeing it doth chiefly belong to an Intellectual Agent , fitly to adapt divers things , and to dispose them according to his designed end , he will be forced to confess that such an accurate and ingenious piece of Work , must have proceeded from Reason , and not from a Chance-medly of Atoms . III. Never were any Miracleswrought for the Conviction of Atheists . But if it be lawful to compare Great things with Little , and Weak things with such as are Perfect , what is Archimedes his Sphear in comparison to this Universe ? How much more Perfect is the Original , than the Copy ? And shall we believe that Archimedes , in his Imitation of the Motion of the Wandring Stars , made use of Reason , and at the same time suppose , that this infinite num●er of Stars , this wonderful adorning of the Heavens , this excellent Order of an unutterable variety of Works were the product of casually jumbled and justled Atoms ? This can never be supposed by any one in his right Wits : And he that hath either outward Eyes to see with , or an Vnderstanding to discern , can never submit to what is so contradictory to Sense and Reason . For this cause I suppose it is , that GOD who disposeth all things in Number , Weight , and Measure , and who takes so great Care for Mankind , yet hath never been known to work any Miracles in favour of Atheists ; because the Workmanship of Nature is not only a convincing Argument of his Power , but doth also strongly invite and persuade us to the highest Admiration of all his Divine Perfections . And to speak the truth , I could much more easily believe all the Fables of Aesop for true Histories , and that Mice had conferences together , and that a Weesel entertain'd a witty Discourse with the Fox , than that the Rising and Setting of the Stars , the Vicissitudes of Day and Night , the variety of Seasons in the Fourfold divided Year , the two Aequinoctials , and as many Solstices , could ever have been so ordered , without the Divine , that is , the most Perfect Reason ; or preserv'd in the same , by an invariable and uninterrupted Succession . For do not all these , and all the other Wonders , with a constant and never ceasing Voice seem to proclaim , that they are the Off-spring of an Invisible Sovereign Power , and by no means their own Artificers ? He hath made us , and not we our selves . IV. The various Species of Animals prove the Being of a GOD. But that I may not insist too long in laying open the Beauty of the Universe , I will pass by the vast Globe of the Earth , poised in the midst of the Air , the Mountains lifting up their Heads towards Heaven , the Rivers that water and fructifie the Earth , the prodigious variety of Vegetables , which grow of themselves , and the vast number of Mines and Quarries , from which Gold , Silver , and the rest of the Metals , with several sorts of Earths and Stones are dug . Let us only consider , the almost infinite differing kinds of Living Creatures , whose opposit outward shape , and the great and many Conveniences and Necessaries they afford to Mankind , declare them to be the effect of the One only First Principle or Author of all things . For who can imagin that the difference of Male and Female , the desire of Mutual Embraces , and of perpetuating themselves by their Posterity , and Organs fitted for that purpose , were design'd and contriv'd by any thing less than a Wise Omnipotence ? Who is there , that upon a diligent view of the several sorts of Birds , their astonishing Artifice in making their Nests , their Hatching and care of Feeding their Young , their dexterousness in teaching them to Fly , doth not presently discover the Supream Cause of them , who with wonderful Wisdom and Artifice hath contriv'd and order'd all things , and hath imparted several virtues and forces to different Animals , according to their various use and capacity ? How exquisitely is their whole frame suited to the use for which they are design'd , and how accurately are their Organs adapted to their several Actions ? Thus Bulls are furnish'd with Horns ; Lions with their Paws ; Elephants with their Teeth and Snout ; and the Rhinocero's with his close Armour , as well in order to the attaining of their designed End , as to defend themselves , and offend their Enemies . V. The various Faculties in Beasts , plainly prove a Sovereign or Supream Power , ordering and designing all things . Shall any one be so weak as to think , that broad and flat Feet were given to Water Fowl without any design , and by meer hap hazard , when the use of them in Swimming is so apparent ? Can any one suppose that Herns , should by chance , have long Legs and Necks , and Beaks sharp-pointed like Daggers , wherewith they pierce the Fishes , and draw them out of the Water for their prey ? Whench hath the Pike his prominent Saw-like Teeth on each side his Jaws , and the Roof of his Mouth thick set with Hooks , that the slippery Prey might not escape his greedy Jaws ? Is it by chance that the Woodpacker is furnish'd with Claws , wherewith it runs up the side of Trees like a Cat , and a forked Tongue , wherewith it robs the Tarantula of her Prey ? Consider the Arts and Industry of the Bees , Pismires , and other Beasts , about their Food , begetting of their Kind , breeding of their Young , and fighting with their Enemies , and it will appear self-evident , that none of these can be supposed the fruit of an Accidental and Confused motion of Atoms , forasmuch as nothing more excellent , more apposit or useful , can be conceived by the Mind of Man. VI. The beholding of Man , leads us to the knowledge of ▪ GOD. But to make no longer stop here , let us take a view of Man , Nature's Masterpiece , and behold all the Excellencies dispers'd up and down in all other Living Creatures , united in this Microcosm , or Little World. Can any one behold his comly Form , the erect posture of his Body , his Face looking upwards , and ( as it were ) directed towards Heaven , and the Beautiful symmetry and proportion of his whole Body and Parts , and suppose him to have had no Author of his Being ? But to leave the Wonders of his Outside , if we proceed to take a view of his Inward Parts , their structure and situation , the Nerves and Sinews deriving their Original from the Brain , the Arteries from the Heart , the Aethereal ever moving Spirit that fills them , and imparts motion to all the several Joynts and Members of the Body , and vigour and strength to perform all manner of Actions , we shall find still stronger Arguments to persuade us , that there must be a First Cause , who is the Principle of all Human Perfection . VII . The description of the Eye , as to its External parts . But forasmuch as Vulgar Wits are more apt to be taken with Examples than Discourse , let us take to task some one Part of the Body of Man ; for Example , the Eye , and scan the Miracles it contains . And here at first sight we meet with so many Wonders in its most curious Make and Contrivance , that it is impossible for a Man , not wholly bereft of Reason and Understanding , to doubt of the Sovereign Perfection of the Artificer . In running over its outward Parts , we meet with the Bony Orbit , or round Ossea Orbita , together with the Eyelids , the Hair of the Eyelids , and the Eye-brows , as also the Glandules or Kernels , with the Excretory Vessels and Passages , all which serve either to defend that tender Part , or assist and facilitate its motion . The Eyelids are as Curtains to the Eyes , and are assisted with the ministry of several Nerves , which by insertion into the Muscles , become useful for the opening or shutting of them . The Eyebrows and Hair on the Eyelids , are like Ramparts , to secure the Eye from things that are hurtful to it , and to prevent their sudden and unexpected eruption . The Excretory Passages serve to carry off the superabounding Humor , that the Eye may not be clog'd by the affluence of serous Matter , or the Eyesight dimmed by the acrimony thereof . VIII . The Inward Parts of the Eye consider'd . If we proceed to the Inner Parts , which Nature hath hid from , but Anatomy lays open to us ; we shall first find the Muscles , wherewith this miraculous little Globe continues hung up and equally pois'd within the Orbit , and performs its various motions . In the Midst of it is the Pupilla , or Sight , of a round Figure , that the visible Species or Rays proceeding from Objects , might be the better received by it , from what part soever of the Hemisphere they come . After these appear the Coats , or Membrans of the Eye , and next the Humors , which like a Dioptrick-Glass do refract and concenter the Rays that represent the Images of Bodies . For the Watry Humor distending the Membran , and making it gibbous , doth ampliate the Convexity of the Eye : And the Crystalline Humor placed within the opening of the Grape-like Coat , Tunicâ Uvea , like a piece of Glass set opposite to a Hole , in which the Rays coming from all parts are collected and refracted . And behind the Crystalline Humor is placed the Glassy Humor , by means whereof the Tunica Retina , or Network Membrane is at a fit distance separated from the Crystalline Humor , so that when the Rays with due refraction have past the same , they attain their proper place and center . IX . The structure of the Ear examin'd . Tho' the EAR be not of equal use and concern to the convenience and necessities of Life , as the Eye , and is only design'd for the perceiving of Sounds ; yet is it for the Excellence of its structure very little inferiour to that of the Eye , especially if we consider its Inner parts , and the mutual connexion of them . For from the Lappet of the Ear , which is narrowed by degrees , we see that the Hollow of the Ear goes slanting inwards , to the end that the Sounds , by passing its crooked Windings and Turnings , might be encreased . For the thin Membrane , placed near the Hole of this inward Cavity , being struck by the impuls'd Air ▪ doth affect the Fibres and Auditory Nerve with the same motion . There are also three small Bones fitly disposed and tied together with a Ligament : The first of these is call'd the Hammer , because of the resemblance it bears with that Instrument ; the second is call'd the Anvil , which is somewhat roundish ; and the third , the Stapes or Stirrop ; they are moveable , and seem to be of good use to defend the Drum of the Ear , and prevent its being too much slackened , or too stiff bent . From the fore-mention'd Hollow of the Ear , the Passage ( commonly called by Anatomists the Oval Hole , or Window ) opens into the Labyrinth , and so leads to the last Inner Cavity , called Cochlea ; because in its Spiral Windings it resembles a Snails Shell , which if well view'd , appears to be the work of admirable Artifice ; for being form'd with such Turnings , it renders the Sounds more distinct , and causes that there be no confusion of them . Besides , there are many other Parts not here to be insisted on , whose wonderful Contrivance does much conduce to Hearing . X. The structure of the Eye and Ear , cannot be the effect of a Fortuitous Concourse of Atoms . Now who can be conceived so stupid and void of all Judgment , as to think that the Organs of these two Senses were made by a fortuitous jumbling together of small Bodies ; and not rather acknowledge the most High God , who by his inimitable Wisdom has so curiously framed , and orderly disposed all these several Parts , that nothing can be imagin'd more adapt , and better suited to the uses for which they were designed . XI . Living Creatures could never be by Chance . I could never approve of Democritus his Opinion , which attributes the Original of the World to a company of justling Atoms , as if their Roaming vagaries were an adequate Cause to produce all the Bodies in the Universe . For how can we suppose , that in that infinite Space , wherein he asserts his Atoms to be toss'd , they should come together and unite , to the framing of all the Parts of Living Creatures ? Can we imagine , that by the hudling concourse of like Bodies so many Nerves and Muscles , so many Ligaments and Tendons , so many Filaments and Fibres , could be formed ? Can we think that the Legs , Shins , Feet , Toes , Joynts , with all the other Organs of the Body , were the effect of blind and impotent Chance ? Can we conceive that the Heart , that Noble Muscle , and the Breast in which it is contain'd , together with its Ribs , Muscles , the Lungs , and the Midriff , were made without a Cause and at Hap-hazard ? Or that such a vast number of Veins , Arteries , Grissels , and Membrans had no other rise , but meer Chance and the Heaviness of Bodies ? Who can force himself to imagine , that an infinite number of Blind Men plac'd in an open Field , by a confused running in amongst one another , should at last produce an Army orderly drawn up in Battle , according to the most exact Rules of Military Art and Discipline ? Or why may not we as well with CICERO , suppose that a vast number of Alphabetical Characters , being casually thrown upon the Earth , should all rank themselves into Lines and Words , making the Annals of ENNIUS the Poet ? Now as no Man can so much over-bear his Reason as to think this possible , how much less will he be able to believe , that the curious Structure and Order of the Parts of Animals , is the effect of Chance , that is , of no Cause at all ? XII . Atoms cannot produce any t hing of themselvee . And to deduce this matter from the Beginning of the World ; If it be so that Atoms have a Power to produce and generate things , why do they not now produce or renew the same Things they framed so long ago ; why are there no Mountains raised anew ? How is it that they do not constitute another Sun ? How it comes to pass that all Living Creatures keep to their kinds , and that no new ones do arise from their Sensless Jumbling together ? Neither will it be of any advantage for the Atheist to alledge here , that Flies , Mice , and other Insects are daily generated without the Union of both Sexes ; because the Question here is not concerning the Production of Things , but concerning the inborn Power of Nature , or Seeds , out of which Living Creatures are Born , and are endowed with a Virtue fit for the Generating of them . And seeing they have not this of themselves , since it is a contradiction for a thing to be productive of it self , it must follow that they are the effect of the All-wi●e God , by whose power they act whatfoever they do . CHAP. V. Concerning Fate and Will , or the Divine Decree . I. The Ancients took great Pains to reconcile the Divine Preordination with the Liberty of Mans Will. THe Ancients were so solicitous of Preserving Human Liberty , that when they found they could not reconcile them with some of the Divine Attributes , they chose rather to acknowledge their own Ignorance , than to deny it . For when they found that all our Actions must be pre-ordained by God , forasmuch as he is the All-knowing Governour of the World ; and on the other hand experienced in themselves a Freedom of Will , they admitted both to be True , viz. that God doth pre-ordain all our Actions , and that we nevertheless enjoy Liberty of Will. But when they afterwards proceeded to enquire further , how it could be , that Mans Liberty standing , God could have fore-ordained all things from Eternity , they ingenuously profest their Ignorance , and that it was no wonder , that an Infinite Being could not be Comprehended by a Created Understanding . This acknowledgment of Human Frailty was certainly praise-worthy in them : But forasmuch as all are not satisfied with this Answer , many being solicitous to know how the Liberty of Man may be reconciled with Gods Decree , I suppose it will not be useless to make out , that Gods Foreknowledge of and Foreordination of Human actions , doth not take away the Liberty of them . II. What Fate or the Divine Decree is . And here if we consider the Nature of Fate , or the Divine Decree , we shall find it to be nothing else , but what God hath determined concerning every one of us : Or it is the Eternal Decree of his Providence , by which he Sees , Knows and Governs all things . And as BOETHIUS expresses it ; Fate is an Order or Disposition , Inherentin changeable things , by which Providence links them to their due Ranks and Orders . III. Fate lays no necessity upon Human Actions . Now that this Order or Disposal doth impose no necessity upon Human Actions , is apparent , because we find that it is in our Power , to give our Assent to , or to Dissent from many things , and after haveing ballanced both parts , to choose one , and reject the other . We see likewise that Men frequently change their Minds at the Persuasions of their Friends , and do refuse what first they had embraced . And indeed were it otherwise , all Prudence and Reason in Mens ordering of their affairs would be taken away ; for if they had no Freedom to chuse that part , to which they are inclined by Rational motives ; they would not act by the direction of Wisdom , but by Chance and Fortune . IV. It is an Argument of our weakness , that we cannot reconcile Gods omnipotence , with the liberty of our will. And what can be more absurd than to go about to deny our Liberty , which we experience in our selves , and whereof we are so fully Conscious , that nothing can be more illustrious by the Light of Nature than it is , because we can scarcely reconcile it , with the Divine Omnipotence and Providence ? We ought ever to remember that we are Finite , and that God is Infinite ; and that our Liberty must not presently be denied , because we cannot conceive it inconsistence with the Will of God , which is without us , and which our Minds are not able to comprehend ; forasmuch as this only proceeds from the weakness of our Wit and Understanding V. The Decree of God doth suit it felf and comport with things . 'T is true indeed that Fate is immoveable , but yet so as that it inheres in things that are moveable ; because it doth not take away the Nature or inbred Motions of things , but moves them sweetly and without any manner of constraint ; according to the Requirings of the different Nature of things , so as to act necessarily , with things necessary , and freely with free and voluntary Agents . VI. Gods Foreknowledge lays no necessity or force upon Mans will. Neither is this Assertion overthrown by that common Objection : If God foresees that I shall Sin , seeing that his Foresight cannot be deceived , it follows that I must necessarily Sin. For God doth not foresee my Sinning necessarily , but freely and voluntarily ; and his Knowledge imposeth no necessity upon my Actions , no more than my knowing that Peter will walk to morrow , doth lay a necessity upon him of doing so : Or than the knowledge I have of the Suns Existence in the Heavens , doth cause the Sun to be there . VII . The knowledge of God being external to the thing known , cannot hinder its Liberty . For what can be more Childish than to think , that the Foreknowledge of God , which is altogether External to the thing known , should put a force upon the Will of Man ? But you will say , God cannot be deceived . And what then ? Consequently , you 'l say , it was either true from Eternity , that you were to recover of this Sickness , or else false : Therefore it is in vain to make use of a Phisician , since neither the necessity of Fate , nor Eternal Truth can ever be changed . This is worthily stil'd by CICERO to be a lazy Question , because by the same Argument you may overthrow all Human Actions . But that Gods Foreknowledge , doth not import any necessity is evident from this ; that a Contingent thing is of its own nature Indefinite , and of a doubtful event , tho' with respect to the Divine Foreknowledge , it be Definite and determined . AMMONIUS illustrates this by the Example of a Globe , resting on the Plain of the Horizon , the indifferency whereof as to Rest or Motion , doth well express the indifferency of our Will ; but if this Plain be never so little inclined , then it must move of necessity : So likewise when the Will is inclined to any thing , this makes a kind of necessity , upon Supposition only , that the Will turned it self this way ; or that God did foresee this inclination from Eternity . VIII . The certainty of Gods Foreknowledge is no Argument for a force upon our will. You will say , Gods Prescience is most certain ; therefore its Object cannot but come to pass ; and that which cannot but come to pass , is therefore necessary : Therefore , Gods Foreknowledge imposeth a necessity on the Will. I Answer , by distinguishing the Consequent ; I grant that the thing which is the Object of the Divine Foreknowledge , cannot but happen upon Supposition , that it is to happen so , from a necessity of Consequence ; but I deny that it cannot but come to pass absolutely , and by a necessity of Antecedence . Books . 1. Part. 2. Chap. 5. G. Freman Inv. I ▪ 〈◊〉 To the Worshipfull Captaine Richard Cheyney of Hamerton in the Parish of Hackney in Middlesex Esqr. This Plate is humbly Dedicated by Richard Blome . CHAP. VI. How God is said to be the Cause of Propositions of Eternal Truth . I. How the Essences of things are distinguisht from their Existency . FOr the better understanding of this Question , we are briefly to presuppose , that the Essences of things are modally distinguisht from their Existency : For we understand the Essence of a thing after one manner , when we abstract it from Existence or non Existence ; and after another when we conceive it as Existing . For a thing is understood to be Existent , when it is without our Understanding : But a thing that doth not Exist , is objectively in our Understanding , and is not without our Thought . Of this kind are Eternal Truths , viz. That a Triangle hath three Angles equal to two right ones : Six and Four make Ten ; and such like , which are considered as Ideas in our Mind . And forasmuch as these Idea's cannot be said to be nothing , but something , the Questions is , what is the cause of them , that is , whether they depend on the Understanding of Man forming them , or whether they owe their production to some other Principle . II. God is the cause of Propositions of Eternal Truth . I Answer , that all Eternal Truths are from God , as from their efficient and total Cause ; for he is the Cause of all Creatures , not only as to their Existence , but also with regard to their Essence . Forasmuch as he being Infinite Goodness , could not be impulsed by any other Reason of Goodness , to do that which is best : But on the contrary because he determined himself to produce the things that are , therefore they deserve the Title of being Good. As for Example , he did not therefore will the three Angles of a Triangle to be equal to Two right ones , because he saw , that they could not be otherwise ; but on the contrary , because according to his Free-will he had determined the three Angles to be necessarily equal to Two right ones , therefore they could not be otherwise . For in God to Will , to Understand and Create are one and the same thing : Wherefore because he knows a thing , therefore it is true . III. The non-Existence of God being supposed nothing is less true . Neither can we say , that these Truths would be no less true , whether God be supposed to Exist or not : For this is most false ; because all Truths depend upon the Existence of God , who is the first Eternal cause of them , from whence they all flow as from their Fountain . Neither is this difficult to be conceived , if we consider God as an Infinite , Eternal , Incomprehensible Being , the Author of all Good , and on whom all things depend . And therefore they are in a great Error , who think that any thing can be independently of his Will. IV. That twice four make eight is from God. Neither doth it oppose what we have said , that the Mind of Man cannot conceive the three Angles of a Triangle not to be equal to two right ones ; or that twice four should not make Eight : For to prove this , it is sufficient to shew , that there can be no Being which does not depend on God , and was not freely constituted by him : For this being laid down , it evidently follows , that it was not always necessary , that the three Angles of a Triangle should be equal to two right ones , or that twice four should make eight , but that it was ●o constituted by God. V. God being of himself there is nothing independent of him . For seeing God is positively of himself , he is endowed with such an Essence and Nature , that from the consideration thereof we can assign a Reason for Eternal Truth , without need of having recourse to any other Object , for the clearing of their Evidence and certainty . This Attribute would agree to some other besides God , if we should suppose some Natures , Truths and Essences to be such as to be independent of God. Because if any one should demand why they were such , and whence they had their Truth , it might be answered , that they were Eternally so of themselves , and that for that Reason , they became the Objects of the Divine Knowledge , as being of themselves Antecedent to it . Which is so derogatory to the Divine Omnipotence , that it is a wonder to me how any can assert such a thing , who consider well the Divine Independency upon any things whatsoever . Forasmuch as it would follow from hence , that the Complement of the Divine Cogitation would not depend on the sole understanding of himself , but also of some other thing , which was not of the Nature of God , and which is conceived as independent on his Will. VI. In what Sense the Essences of things are said to be immutable and Eternal . If you Object that the Essences of things are Eternal and Immutable ; I answer , That they are so indeed , if it be understood concerning the Immutability and Eternity , which God hath prefixt to them , whilst by his Free-will he has determined some things to be unchangeable . Or else it may be said according to the Sense of the Vulgar , that the Natures of things are Eternal , because there was no Time before them ; or rather because the Eternal God , doth conceive them without Succession , neither will suffer them for ever to cease or be changed . VII God is tho Cause of Truths , as a King is of his Law● . GOD therefore is the Efficient Cause of all things ; not only of such as Exist , but also of Possibles , and of all Truths that we call Eternal : In like manner as a King is the Maker of all the Laws in his Kingdom . For all these Truths are inborn in us from him ; as a King also woul● have them so in his Subjects , if he had Power enough to write his Laws in their Hearts . VIII . Objection . If any one say , That this would make God inferiour to a King , who can at his Pleasure annul the Laws he has made ; which if God should do , those Truths would lose their Essence , and consequently would be no longer True or Immutable . IX . Answer . I Answer , That the Case of God and a King are very different . A King can change his Laws , because his Will is changeable , but God's Will is unchangeable ; for it is his Perfection , that he acts in a most constant and invariable manner . Neither doth it hinder this that his Will is free ; for as his Will is free , so likewise is his Power Incomprehenfible . Wherefore tho' I cannot comprehend how it should not be true , that One and Five are Six ; yet I understand clearly enough , that it is impossible there should be any thing in the whole Universe of Things , which does not depend on him . And therefore it is contrary to Reason to think that any thing cannot be otherwise , because we cannot understand how it can be . It is indeed true in the general , that GOD can do all those things , which are clearly and distinctly known by us ; yet doth it not follow from thence , that he cannot do those things that we cannot conceive : For our Imagination , or Understanding , cannot be the Rule of his Power . Therefore we must conclude , That the Essences of Things , and Mathematical Truths are from God , because he so conceived them , so ordered , and so commanded them : According to that of S. Austin ; Because thou seest them , ( or rather , because it listeth thee ) therefore they are . CHAP. VII . Concerning the Divine Attributes ; and , First , Of the Vnity of GOD. I. What the Attributes of GOD are . ALtho' GOD be One meer Cogitation , and all his Perfections or Attributes indivisibly United ; yet the Acts of Cogitation that we have of him , stirr'd up from several Occasions , which frequently involve many Objects , are Many . For when I consider , that my Mind doth not exist of it self , neither can do all , nor understand all things , &c. I turn my self to the Divine Cogitation , which comprehends all Perfections . And these Reflexions , whether as referr'd to God , or to the various Conceptions of Objects , are called Attributes . Whence it comes to pass , that one of my Cogitations I have of God , as Existing , is different from another Cogitation I have of him , as All-powerful , or Eternal : Because the occasions of these my Thoughts are different ; and one Object which I refer or apply to God , is different from another which I can likewise apply to him . Wherefore seeing I do not find my Mind to be one only , but perceive also the Idea's of other Minds of the same Nature with mine , I cast my Eye on the Divine Cogitation , and thence take an occasion of considering its Unity . II. The Divine Attributes aro indivisibly united . If therefore we consider the Essence of God in it self , it appears to us to be one Simple , Uniform Cogitation , exempt from all Order , Distinction , Priority , or Posteriority . Forasmuch as all the Perfections that are , or we can think of in God , are not only actually present in his Nature , and inseparably united with it ; but are so intimately joyned , that the one is the other ; yea , that one of them is all the rest , and All are most properly One in their Essence : So as that his Eternity is his Omnipotence , his Life , his Spirituality . In a word , All his Attributes are his Life , and his Life is all his Attributes . III. The Unity of GOD was known to the Ancients . It was the constant Opinion of the Ancients , That GOD is One only , the Sovereign of the Universe , whom all things obey . Both Poets and Philosophers own'd this , who frequently call him , The Maker of all things , The Ruler of the World , and The Mind diffus'd through all things . Wherefore also they gave him no peculiar Name , as supposing that no Title could be given to him , who was singular , and had nothing common with other things ; for that Names were only necessary where Plurality is to be distinguish'd , and persons discriminated by certain Marks . IV. The Divine Unity is to ●e explained . But because the word Unity is taken in divers Senses , we are to enquire first , in what respect God is said to be one , before we can come to know , that there can be no more than one . V. A thing is said to be One , three several ways . A Thing is said to be one , First , when its Parts are united ; yet so as that it may be divided into them ; as a Body is said to be One , because of the Union of its Parts , tho' they be separable . Secondly , A Thing is said to be One , because it hath one single Essence , which cannot be divided into Parts ; tho' the Attributes and Modes wherewith it is diversified , may be separated from it , such as Knowledge and Vertue , without which the Soul of Man may be . Thirdly , a Thing is said to be One , which is so undivided , that it can in no respect be divided , nor hath any Attributes , or Modes , that are separable from it , but all things appertaining are most simply one . VI. How God is said to be One. In this last meaning God is said to be One , because all that is in him is One , neither hath he any Attributes that are not Essential to him , and Inseparable from him . And therefore according to our Philosophy , the Divine Attributes are only Modes of Thinking . For when we distinguish his Will and Understanding , that distinction is only made by our Minds , as we conceive him to be conversant about Goodness or Truth . But Real Modes are found in the Things themselves , which they affect and distinguish from others ; as Figure and Motion in Bodies ; Willing and Understanding in the Mind . And are therefore call'd the Modes of Things , because they agree to mutable Things , such as all Created Beings are ; but not to a Being that is constant and ever-abiding , such as God alone is . Wherefore whatsoever is in God is only distinguishable by reason . VII . God is one in such a manner , that there can be no more besides him . Having shewed what manner of Unity agrees to GOD , it may further be queried , Whether God be one in such a manner , as to suffer or admit none besides him . To which I answer , That God is One in such a manner that he cannot be multiplied : For seeing by the Name , GOD , we understand a most Perfect Being , it is necessary that it comprehend all that is most Real ; so that supposing him to exist , all conceivable Perfection must be placed in him , so as by his Idea and Essence formally to exclude every most perfect Being besides himself . For indeed how can any be equal to him ? Or how can all conceivable Perfections be in two several Subsistences ; seeing that whatsoever admits of Division is subject to dissolution , which is the most remote from the Nature of God , who is Incorruptible and Eternal . VIII . Multiplicity of Gods implies a Contradiction . If it be said , That this Division is no hindrance to their Immortality , as long as the one doth not arrogate any thing that belongs to the other , but each of them follow their own work . It will still come to the same thing ; for this distribution of their Work or Business , is an evident Instance of great Imperfection ; because this supposeth them to stand in need of one anothers assistance , being unable all alone to govern the World ; which is contradictory to the Divine Essence , which is known to be Omnipotent , Insinite , and All-wise . IX . If there were more Gods than one , they could not be equal . Moreover it is most certain , that supposing a Plurality of Gods , they cannot be every way equal , but that some Perfections would be found in the one , which are not in the other , which is altogether incompetible to the Supream Being . For let us suppose two Gods , whom for the greater clearness of Discourse , we will call Saturn and Jupiter . Now these two Gods , forasmuch as they severally include all Perfections , they must of necessity be All-knowing , so as not only to know themselves , but others also ; and because in the Idea of either of them , necessary Existence is included , it will follow , that the Cause of the Necessity and Truth of the Idea of Saturn , which is in Jupiter , will be Saturn himself ; and the Cause of the Truth and Necessity of the Idea of Jupiter , which is in Saturn , will be Jupiter ; and therefore some Perfection will be found in Saturn , which is not in Jupiter ; and in Jupiter , which is not in Saturn . The reason whereof is this , because the Perfection of the understanding of either of them , will depend on the other ; and so must be both of them Imperfect , which is repugnant to the Nature of a most perfect Being . X. Neither could they be Omnipotent , or All-knowing , It belongs also to the Idea of a most perfect Being , that he be All-powerful and All-knowing ; but it is a Contradiction , that more Beings than one should be endowed with these Perfections : For either they would be able to hide their Thoughts from each other , or not be able ; if the first , how could they both be Omniscious ? If the latter , how could they be Omnipotent ? IX . If God exist , he must be One. Lastly , Necessary Existence is included in the Idea of God , because he is Independent of , and before all other Beings . Now whatsoever doth necessarily exist , must of necessity be Singular , since Singular Being is nothing , but actually to exist , which is so peculiar to God , that he cannot but exist : Wherefore seeing Singularity and Unity are one and the same thing , it is evident that the Divine Nature excludes all Multiplicity , that is , cannot be divided into more Gods ; and consequently , as God is Undivided in himself , so neither can he be partible into others . XII . The Heathens did not own many Gods. But may some say , How comes it to pass then that the Heathens worship'd many Gods , if it be so that more Gods than one implies a Contradiction ? I answer , That the Heathens never had any Idea of many Beings absolutely perfect , as is evident from their Writings ; because they made one to Rule in Heaven , another in Hell , a third over the Winds , a fourth over the Fire , and distributed the Government of the Universe amongst many Gods : But they did not suppose any of them to contain all manner of Perfections , and to have the Power and Dominion over all Creatures ; but took them to be much of the same Nature as we conceive the Angels . And Marsilius Ficinus tells us as much , Argument . in Cratylum : Neither let it trouble you , saith he , that Plato doth frequently make mention of many Gods : For he proves in his Parmenides and Timaeus , that there is but One God ; and that the rest are only his Angelical and Heavenly Ministers ; and by calling them Gods , doth not so much imply their being Gods , as their being Divine . For indeed the Philosophers do so much abhor a Plurality of Gods , that it would be more easie to persuade Euclid , that many Centers may be found in a Circle , than to make Philosophers believe that there are more than one God in the World. CHAP. VIII . That GOD is Eternal , or without Beginning and End. I. The Error of some , who say , that God was the Efficient Cause of himself . THo' almost all Philosophers agree in this , that there is a GOD , and that he governs the World ; yet don't all of them conceive his Existence after one and the same manner . Some of them are of Opinion , that GOD had some kind of Beginning , and tho' the same were before all Ages ; yet that he was born or produced as all other Things . But forasmuch as it was unbecoming the Divine Majesty to proceed from any other , and that he who is the Author of all Good , should derive his Being from another , they asserted himto be his own Efficient Cause , and that he so proceeded from himself . II. This Opinion destroys the Nature of God. But this Opinion does not so much oppose Reason , as it destroys the very Nature of God : For how could God produce himself , since this supposeth that before his Production he was not , because he was then to be produced , and yet was at the same time , forasmuch as he did then influence his own Production , which are absolute Contradictions . And whatever may be said in this case , we must allow some Principle of the Divine Production , which is absolutely repugnant to the Nature of God. For we no sooner consider the Nature of GOD , but we find him to be the Most perfect Being , which excludes all Imperfections , that is , any bounds or limitation of his Perfections , and includes all Perfections , and consequently also Existence , by which he is distinguish'd from all other things . III. Necessary Existence is contain'd in the Nature of God. For tho' whatsoever we conceive be apprehended by us as Existing ; yet we find that Existence doth not belong to God and the Creatures in the same manner . For in the Conception of Creatures , whose Perfections are finite , only Contingent and Possible Existence is contained ; whereas in the Notion of God , Necessary Existence is included , as being an Eternal Perfection ; insomuch that it is as obvious to our knowledge that GOD exists , as it is to a Mathematician , that a Triangle hath three Angles equal to two right ones . For as it is the Nature of a Triangle to have three Angles equal to two right ones ; so likewise it is the Nature of God , to be necessarily Existent , and therefore as he exists now , it must be acknowledg'd that he hath existed from all Eternity . IV. They who distinguish God's Essence from his Existence , takes away his Eternity . They who do not mind this , are very liable to Error , and to ascribe to God simple Duration instead of Eternity : For by distinguishing Existence from Essence in God ▪ as in other Created Beings , they imagine Succession of Time to have place in him , and by this means divide that which is Infinite , into Parts , and assign differences of Duration to it . Hence it is that some demand , Whether God hath not existed longer now , than when he first Created the VVorld ; or whether he did not exist longer before the Creation of the VVorld , than the Time that has run from the Beginning of the VVorld till now . Which Questions are occasion'd by their separating the Essence of God from his Existence , and supposing that the Eternity of God may be understood , without the contemplation of his Essence ; or because they have not distinguish'd Duration from Eternity , but have concluded them to be confounded together . For Duration is an Attribute of the Existence of things , not of their Essence . Who will not say that the Propositions , Twice three make six ; Nothing is made out of Nothing ; which are only said to be true according to their Essence , that they have continued longer now than at any other time ? Wherefore Duration is only an Affection of Existence ; whereas Eternity cannot be conceived without the Divine Essence ; and forasmuch as the Existence of God is contain'd in the Conception of his Essence , we are also to attribute Eternity to him , and not Duration . V. The Nature of God includes no Conception of Futurity . Therefore we say , that all Creatures Enjoy Existence , forasmuch as it doth not belong to their Essences , but is in a manner foreign to them . But this cannot be affirmed of God , because his Existence is not distinct from his Essence , and is GOD himself . Besides , all Creatures , whilst they enjoy the present Time and Existence , may be said to have it to come , forasmuch as their Existence is without them , and only successively bestowed upon them : Whereas we cannot say of the Divine Existence , that it will be , or is to come , because he has now the same Existence he will have for ever ; Actual Existence in him being like all his other Attributes , which denote no difference of Time in Him. VI. Whether the Mind of Man hath a permanent Existence , as God hath . It may be Objected , That some Philosophers and Divines hold , that the Duration of the Mind of Man is Permament , and as they express it , All at once , and ye none of them attribute Eternity to it : So that accordingly , tho' the Existence of God have no Parts whereof some are before the other ; yet for all that Duration may be attributed to him . VII . An Answer to this Doubt . I answer , That Permanent Duration can only improperly be attributed to the Mind of Man , because we find a manifest Succession in our Thoughts , whereof nothing is to be found in the Divine Perception . But to explain my Mind more fully , I think that Permanency is very improperly attributed to Creatures , forasmuch as the most Perfect of them , cannot all at once admit all the Attributes and Modes it is capable of . For as it implies a Contradiction for a Body at one and the same time to admit several Figures , as to be Square and Round , to Move and Rest , so neither can a Created Spirit affirm and deny the same thing , or comprehend all those things with one Thought , which it is capable of knowing . But GOD possesseth all Perfections , and all Attributes , at one and the same time , neither is any of them before or after the other . And therefore Permanence appertains only to GOD , and Duration to all other Beings . Besides , since all Creatures are Created by God with equal dependency , and have their Preservation no longer than he pleaseth to continue it ; it follows , that their Duration is not permanent , but successive , and can indeed be nothing else but a continual Reproduction , by which they persevere in their Beings . CHAP. IX . That GOD is Infinite , and how we are to understand , that he is Circumscrib'd in no Place . I. All things are not contain'd in some place . AMongst those Prejudices , which we have taken in from our Childhood , and which some to this day hold for Truth , there is none more dangerous in Philosophy than that which ARISTOTLE teacheth in the Fourth Book of his Natural Philosophy , the First Chapter , viz. That all things are somewhere , that is , contained in some certain Space ; because he supposed whatsoever is not , to be no where ; which he takes to be so notorious and evident , that he is not afraid to rank it amongst Common Notions , and to esteem it an indubitable Truth . Wherefore also in his First Book of Heaven , the Third Chapter , he assigns the Highest place to the Gods , as most becoming their Dignity , and whence with greater ease they may take a View of all Things . And in the same Book , Chap. 2. he disputes against the most ancient Philosophers , and denies God to be diffus'd through all Things , as supposing it most unworthy the Divine Majesty to be present with the Earthly World. II. Immaterial things cannot be said to be in a Place . But that this is an Erroneous Opinion , appears from the Immensity of GOD , and the Existence of Spiritual Things : For it is evident that God and Immaterial Substances are , or have a Being , and yet they are not comprehended in any determinate Place . For to be in a Place is the Property of Extended Beings , and cannot be attributed to an Immaterial Substance void of all Extension . If at any time Places be attributed to the Soul , this is not with respect to its own Essence , which consists only in Cogitation , but with respect to the Body , to which it is joyned ; because it cannot be , but that the Body being limited to a certain Space , the Soul , which is intimately present with it , may be said to be included in one place , rather than in another . But if the Soul be considered by it self alone , forasmuch as it is a Thinking Substance and void of all Extension , it cannot fill any Space , nor have any situation amongst Bodies ; for otherwise it would be Divisible and Mensurable , which is repugnant to the Nature of an Intellectual Being . III. God is comprehended in no Place . And as for GOD , he is much less comprehended in any Place : For tho' he be said to be every where , yet may he also be said to be no where ; forasmuch as his Immensity is unbounded and diffus'd through all Places . But because all do acknowledge , that the most Perfect Being hath no Bounds , either of his Duration or his Presence , the only difficulty will be in the Explication of the Divine Immensity , viz. in what sense God is said to be Infinite , and so diffused through all , as to be every where . IV. Some falsly suppose God to be every where by his Presence . Some , whom I call Vulgar Philosophers , derive the Immensity of God , from his Presence in every place , supposing God to be every where , because there is no place in which he is not present , or which is not filled by him . But these seem to Attribute Extension to God , by conceiving to partake of Quantity , as Occupying all places : And therefore would think his Greatness to be Finite , if there could be any place , in which he were not present , and coextended with it . V. God , before the Creation of the World , was not in any Space . Whereas we know that God was , before there was any Space ; for what Place did God fill before the Creation of the World ? If God therefore did Exist before there was any Space , it is evident that being in a Space is not Essential or Proper to him . VI. God is said to be every-where , because all Created things perpetually depend upon him . Wherefore to leave this gross way of Philosophizing , we say , that God is precisely Infinite , fornsmuch as all Created things , are every moment as it were anew Created , and cannot Exist without his continual Influx : For the perpetual dependence of the Creatures , doth clearly Evidence Gods Omnipresence ; because those things which are in Nature , are not preserved by any Force or Virtue of their own , but only by the Essence of God , and by this Favour continue in their Beings . Neither is a less potent Cause required to the Preserving of things , than was to the Creation of them . For from this that a thing now Exists , it doth not follow , that it shall Exist the next moment , since there is no necessary Connexion of the Parts of time , but one of them is alway distinct from the other ; so that God must influence his Creatures in the same manner for their Conservation : In which Conservation , and presence in every thing , the Immensity of God doth consist . Thus God is said to be present to our Minds , because he is with every one of our Thoughts , and concurs to every determination of our Wills. And he is said to be present to our Bodies , because he doth dispose , move and make them rest . Lastly , he is present to all other things , because he doth as it were continually produce them anew , cherishing and preserving them by a way that surpasseth our Understanding . VII . God is not present every where by his Power , but by his Essence . Neither can I assent to those who say , that God is present every where , not by his Essence , but by his Power only , by which they seem to divide his Power , from his Essence and other Attributes ; whereas indeed all things that are in God , are one with his Essence ; nor are his Attributes any thing else , but divers Modes of Thinking . For they must be fain to confess that this Power is something that is Created , or something that is only accidentary to the Divine Essence , without which he may be understood or conceived . Now it is the most absurd thing to make it a Creature , since whatsoever is Created doth stand in need of the Divine Power for its Existence ; and since this Divine Power it self is supposed to be a Creature , it will stand in need of some other Power to preserve it , and by this means we shall make a Progress to Infinity . Or if they will rather make this Power to be accidental to God , and distinguisht from his Essence , then they must be forced to admit , that God is not a most Simple Substance ; because , according to their saying , he would be compounded of his Essence and that Power . Wherefore we conclude , that God is present to all things by his Essence , and that he is in every Place , forasmuch as he continually procreates and conserves the things which he hath Created . VIII . The Immensity of God is only an External Denomination . Hence we may perceive the false way of Reasouing used by the Peripateticks , who to make out the Doctrin of Gods Immensity , have invented immaginary Spaces ; as if the Immensity or Omnipresence of God were any thing else , but an Extrinsecal Denomination , taken from his Works ; forasmuch as he Works in all Created things , and by Reason of that Operation is said to be present with them . For Immensity in God , seems to have some Affinity with Creation ; and as Creation is Attributed to God , from the Action of Creation , since before the Creation he could not be called a Creator : So likewise Immensity is Attributed to God , with respect to his Creatures , since he could not be present with them , before they were Created . CHAP. X. That God is the most Simple Being . I. What Composition is , as it is opposed to Simplicity . As things are more clearly and distinctly perceived by comparing them by their contraries ; so I suppose it will be of great use for the Explaining of the Simplicity of God , to unfold what Composition is , and to what distinction of parts it answers . Now Composition is the Coalition or Union of many things , which presupposeth a distinction of Parts , since nothing can be united to it self , but to another . And it is various according to the diversity of the Parts , of which things are compounded . II. There is a three-fold Composition Real , Modal and that of Reason . For one Composition is Real , which consists of Parts really distinct ; as a Man is compounded of Soul and Body , because we can clearly and distinctly perceive the Mind without the Body , and the Body without the Mind . Another is Modal , which consists of a Subject and Antecedent or Mode ; as a Prudent Man is compounded of a Man and Prudence ; and is known by this Mark , that tho' a Substance may be clearly perceived without the Mode , by which it is diversified ; yet on the contrary , the Mode cannot be clearly understood without the Subject , whose Mode it is . The third sort of Composition is called , a Composition of Reason , which consists of the Genus and Difference , as when Man is said to be compounded of an Animal , and Rationality . Which consists in this that we cannot perceive a thing clearly , if its Attribute be excluded from it : As Extended Matter or a Body , is said to differ only by Reason from Extension , because we cannot conceive a Bodily Substance , if Extension in Length , Breath and Depth be separated from it . And therefore , such kind of Attributes as these are not called the Modes of Things , but only Modes of Thinking , forasmuch as by the help of Reason only , they are distinguisht from those things , with respect to which they are so called . III. God does not consist of Parts These things presupposed , it will not be difficult to shew that God is no Compound , that is , that he hath no Parts that are Really or Modally distinct from each other . For there is no more certain Argument of a real Distinction , than that the Idea of one thing is perceived , not to be the same with the Idea of another thing ; or to speak in School Terms , that the one can Exist without the other : But it is manifest , that no such distinction is to be found in God , forasmuch as all his Attributes are Essential , and not Separable from him , but by the Operation of our Mind . IV. Nothing in God is before other , and therefore no Composition Moreover the things that go to the making up of any Compound , must at least by Nature be before the thing Compounded , or that is made up of them : Thus every Cause is said to be before its Effect ; Substance before Accidents ; and Subjects before Adjuncts : And therefore those Substances , by the Union of which God is supposed to Exist , must of necessity have been before him , since we understand them to be , before they constitute the Divine Essence . Thus Matter and Form , which are considered in Natural Philosophy , as the two Principles of a Natural Compound , are apprehended to be , before they do constitute their Compound . And in like manner , if really distinct Substances were found in God , they would be intelligible to us , before that they were Attributed to him ; yea tho' they should never be Attributed to them . V. God is not Compounded either of Corporal or Spiritual Parts . And forasmuch , as we acknowledge only two general heads of things , viz. Material and Spiritual , we must of necessity suppose , that the things of which God should be composed , must be Corporal or Intellectual . If the first , it will follow , that seeing a Body is the immediate Subject of Local Motion , God is Divisible and Limited , yea , Subject to Passion and Alteration , all which include Imperfection , and consequently are repugnant to the Divine Nature . If they be supposed to be Spiritual , since there is a real distinction between them , and one of them according to the Rules of Logick , can Exist separate from the other , consequently there will be as many Gods as there are Substances , that are supposed to constitute God. For seeing they can Exist by themselves , and need no assistance from any other to their Conservation , they will also have power to confer upon themselves all the Perfections , which belong to God alone . Than which nothing more absurd can possibly be imagined by the Mind of Man. VI. There are no Modes in God , out of which he may be said to be compounded We say therefore , that there are no Substantial Parts in God , into which he can be divided , or from the Union and Coalition whereof he doth consist . Neither is there any Composition in God , out of a Subject and Accidents or Modes ; because Modes arise only from the various Change of the Substance , which therefore cannot be supposed in God , because in him there is no Change or Variation . Wherefore it follows , that whatsoever is in God , is only distinguishable by our Thoughts , because every Attribute of God may be called his Essence , and have the name of supreme Perfection : And therefore are neither more nor less than the one God , in the Unity of Nature . So that we must conclude God to be the most simple Being , utterly devoid of all Parts , or Divisibility . CHAP. XI . God is true , and as he cannot be deceived , so neither can he deceive . I. If God was not true , we could not be assured of any thing . THo' Human Cogitation be commonly held to be the Rule of Truth , and whatsoever , we clearly and distinctly perceive , is supposed to be true ; yet all this certainty would come to nothing , if God were not true , and most remote from the least suspicion of deceiving us : For how should we believe Revelation , if it were possible for God to deceive us ? For he having bestowed upon us our Intellectual Faculties , it might be questioned , whether it was not his pleasure to make us such , as that in the use of them , we should be deceived , and against our will fall into Error . II. Truth is a necessary Ingredient of a Being absolutely Perfect . But this Doubt will be easily removed , and the Divine Veracity cannot but be manifest , by considering that all Perfections that can be conceived by us , do belong to God. For , forasmuch as he is the Highest Being , he must also of necessity , be the most Soveregin Good and Truth : Now it is as much a Contradiction , that any Falsity should proceed from the Highest Truth , as that any Evil should come from the Highest Good : Which yet would be , if in the use of our Faculty of knowing , that is , in assenting to things that are clearly and distinctly perceived by us , we should fall into Error . And indeed seeing that whatsoever is real in us does proceed from him , and that the Faculty we have for the knowing of Truth , and distinguishing it from Falsehood , is Real , we could not but take him for a Deceiver , in case our Faculty could not reach the Object , but should always take Falsehood for Truth . Than which nothing can be imagined more injurious to the most Perfect Being and the Fountain of all Good. III. That the Most Perfect Being should deceive us , implies a Contradiction . Besides by the Name God , we understand the most perfect Substance ; and Imposture or Deceit is a manifest Imperfection , because it has a non Entity for its End , that is , something that is not true ; for all Deceit includes Falsity , which being oppos'd to Truth , it must be carried to that which is no Truth , that is , a non-Entity : So that from hence it will follow that God cannot without a contradiction be said to deceive us . IV. Deceit it an Argument of Fear or Malice . Lastly , Tho' perhaps amongst Men , it may be accounted a piece of Cunning to deceive others , yet Falseness or a will to deceive others , proceeds from Fear or Malice : And forasmuch as Fear supposeth Weakness , and Malice the want of Goodness , neither of these can be admitted in God ; and consequently neither can a Will to deceive be ascribed to him ; yea , he must be supposed to be the Highest Truth , and not thought a Deceiver upon any account whatsoever . V. An Objection from the Concourse of God. You will object that he who concurs to those Actions of the Will , or those Judgments by which a Man is deceived , he is to be looked upon as the Cause of that Man's Error : But God so concurs to those Judgments of Men , by which they are deceived ; therefore God is the cause of Men's Errors . VI. God doth not concur to the Formality of Error . This Objection is easily answer'd by distinguishing between the Material and Formal , or between an Act and its Privation . For all Acts are true and Good , forasmuch as they depend on God ; and as it is a greater Perfection in Man , that he can exert them , than if he could not . But Privation , wherein alone the Formal Reason of Falsity doth consist , doth not stand in need of any Divine Concourse , because it is No thing , and with Relation to God , is not to be call'd a Privation , but only a Negation . VII . Whether God may be said to deceive the Devils and Damned Souls in Hell. I know that some Divines seem of a different Opinion , who think that God can deceive Men , by inspiring them with Idea's that deceive them ; and that he does this of his free Will , as being the Supream Lord of all , and therefore may deal with his Creatures , as he listeth . So as that they are clearly persuaded that they feel something , which indeed they do not , according as it happens to the Devils and Damned Souls , who think they are tormented with Fire in Hell , when indeed there is no Fire there at all ; or if there be any , it is Material , and so cannot affect Pure Minds . VIII . The foregoing Douts answer'd . I Answer , That GOD does not deceive , or by false Apparitions delude the Devils or Damned Souls ; because the Fire wherewith they are tormented , is not only an Idea of Fire impress'd on them by God , but the true substance of Fire wherewith they are tormented , and sensibly affected . For why may we not suppose , that God can joyn the Soul of Man with some Body , and so unite his Thoughts to the Motions of that Body , that according to the greater or lesser force of the one , a greater or lesser sense of Pain may be excited in the other ? For as we see that the Soul of Man is kept link'd to the Body , so it may as well , by the Divine Power , be detained and suffer by Corporeal Fire ( as we suppose that in Hell to be ) seeing that this is consonant with the Scripture , and establisheth the Truth of GOD. IX . In what sense God it said to Blind the Minds of Men. If any one urge further , That GOD doth sometimes harden the Hearts of Sinners , and so blind their Minds , that they contemn his Commands , and run headlong into the greatest Sins , as appears by PHARAOH , whose Mind the LORD did so incline to Evil , that it was not in his Power to obey his Precepts . Besides , we read in Scripture , That GOD put the Prophets upon foretelling Things that did not come to pass ; as appears from the History of Jonah the Prophet , who declar'd from God to the Ninevites , that their City should be destroyed within forty days , which never came to pass . X. Answer . I Answer , That tho' Pharaoh , by the Perversness of his Will did refuse to obey God , and to dismiss the Children of Israel , notwithstanding the frequent Warnings he had from above ; yet is not this so to be understood , as if God by any positive Influx had hardened his Heart , and forced him to despise his Commands ; but only that he withheld Efficacious Grace from him , and left him to his own wicked Will. And as for Jonah , who foretold the ruin of the City Nineveh , that is not to be called a Lye , but rather a Threatning or Denunciation , the Execution whereof depended on their Obstinacy or Conversion , as appear'd by the Event : For the Ninevites Repenting in Sackcloth and Ashes , and earnestly deprecating the Divine Displeasure , did escape the Prophet's Commination . XI . God may sometimes deceive us for our Good. Tho' it be a most undoubted Truth , that it is repugnant to the Divine Perfections to deceive any one ; yet this does not hinder , but he may make use sometimes of a Prudent Deception towards us for our profit , in like manner as Physicians and Parents sometimes deceive their Patients and Children for their good and advantage . Neither can God properly be said to deceive us , when things appear to us otherwise than they are ; because God is not the cause of that Deception , but we our selves , who judge of Bodily things according to their External appearance before that we have sufficiently examin'd them ; forasmuch as in these and the like Appearances we should suspend our Judgment , before we do determine any thing concerning their Truth . XII . We cannot be said to be deceiv'd when we imagine the Sun to move , and the Earth to stand still . Thus GOD cannot be said to deceive us , when by the Earths whirling about its Axis , the Sun seems to us to rise and set ; but we rather deceive our selves , when we attribute Motion to the Sun , and Rest to the Earth , before we have fully discuss'd the Point : When indeed we ought to suspend our Judgment until having weighed the Reasons on both sides , we did clearly and distinctly perceive , to which of these Bodies the motion we perceive were to be ascribed . Neither are the Common People look'd upon to be absolutely in an Error , when they suppose the Sun to move ev●ry day about the Earth , tho' it be not true , because herein they follow what seems probable , which is sufficient to free them from the imputation of being deceived . XIII . From God's Veracity we may conclude , that whatsoever is clearly perceived by us , is true . Hence it follows , that whatsoever is clearly and distinctly known by us , is true : For since the Light of Nature , or our Faculty of Knowing , hath been given us by God , it can reach no Object which is not true , so far as it is reached by it ; that is , forasmuch as it is clearly and distinctly perceived . For God might with reason be look'd upon as a Deceiver , in case he had given us a Faculty that embraced Error instead of Truth : Wherefore forasmuch as Mathematical Truths are most clear and evident , so as to thrust themselves upon our Understandings , we ought not in the least to suspect them , but receive them as undoubted Truths . CHAP. XII . That GOD is most highly Intelligent , or Omniscient . I. Omniscience is included in the Conception of a most Perfect Being . IT will not be any hard matter to make out , that GOD is Omniscient or All-knowing , and that at one view he comprehends all things , if we remember him to be the Most perfect Being , in whom no defect or limitation can be conceived , which would not be if his Knowledge were finite , and that any thing could escape his Understanding . Therefore the Ancients called GOD , the Mind , or Soul of the World ; not only for that he was diffused throughout the Universe , and did animate all Things ; but also because he knows them all , and pierceth their most Secret parts . For Ignorance is a mark of Weakness of Soul , and that Being cannot but be Imperfect , whose Understanding is bounded by any Bound or Limit , beyond which it cannot reach . II. This Point further made out out by Reason . But because Discourse and Reason serve to illustrate the Truth of Things , I shall make use of this Argument : Either GOD understands all things , or some things only , or nothing at all . If he only understand some things , then his Understanding is supposed imperfect , which no body will say of God , that is persuaded of his absolute Perfection . But if he knows nothing , then certainly he cannot be supposed to be God. Wherefore it follows , that as God contains all Perfections , so he is endowed with knowledge in the highest and most transcendent degree . III. How the Divine Knowledge is distinguish'd from the Knowledge of Men. I say , in the most transcendent degree , because Human Cogitation is very different from the Divine . For the Idea's of Men are bounded by the Objects that are without them , and according to the diversity of things which it contemplates , are said to be either clear or obscure . For it does not depend of us , that our Idea's do represent this or the other thing to us , they being only Modes of Cogitation , and as such are all of them equal , all their difference proceeding from the Objects they represent ; so that some hold forth to us an Extended Substance , others a Mind ; some Simple things , others Compound ; all which variety the Idea's borrow from the Things themselves . For it cannot be question'd , but that those Idea's which represent some particular Substance to us , contain more objective Reality , than those which only exhibit Modes to us , which are only the determinations or limitations of Substance . But the Divine Knowledge doth not thus depend on the Creatures , neither are his Conceptions bounded by any things without him ; but all Created Beings derive their Essence from his Understanding , and according as they are determin'd by the same , do obtain divers degrees of Entity . For the Divine Intellect , whereby God knows the Creatures , is the same thing with his Will and Power that does determine them , and are only distinguish'd by us , according to our various ways of considering them . IV. There is no Object of God's Knowledge , that is without himself . Wherefore we are not to suppose any Object of the Divine Science to be without himself , who is alone the Object of his own Knowledge ; or to speak more properly , He is himself his own Knowledge . For should we suppose , that Created Beings were before the Divine Intellect , and that as Objects they did terminate his Idea's , they must be supposed to have a Nature and Essence independent on God , as being at least by Nature before him . Which to assert would be as foolish , as to say that a Pourtrature drawn by a Skilful Limner , is the Object of that Art : For a Limner stands in need of Pencils and Colours , to perform his Work●● whereas GOD did not stand in need of any thing for the Creation of the World , but all Created things did proceed from his Understanding and Free Will ; not only as to their Existence , but as to their Essence also . V. Indifferency in God is the Highest Perfection . Whence it appears , that Indifferency which is an Imperfection in Man , and is held to be the Iowest degree of his Liberty , is the Highest Perfection in God , as being a sign of his Sovereign Empire and Power , who is unbounded by any Laws or Rules , and the sole Author of all Order , Truth , Justice and Goodness . For it implies a Contradiction , to suppose that the Divine Will was not indifferent to all things , that have been or shall be made . Because no Goodness or Truth can be imagined , the Idea whereof was in the Divine Intellect , before that his Will had determined to make it so . VI. How God knows Sins , and those things which are called Entia Rationis . Entities of Reason . Some Question whether the Divine Knowledge doth extend it self to all things , and whether God besides Positive things , that is , real Substances , doth also know things Privative and Fictitious ▪ such as are Sins , entities of Reafon , &c. VII . Answer . For Answer I say , that God knoweth all things whereof he is the Efficient Cause , because as was said in the Chapter of Gods Immensity , all things are continually procreated by him , as not being able to continue one Moment without his Concourse : But Sins being no real things , and depending on the Will of Man , are not known by him without the Minds of Men. And as for Entities of Reason , forasmuch as they are nothing else but Modes of Thinking , which are used for the easier Explication of the things we know , or the better retaining of them ; these are no otherwise understood by God , than as he is the Procreator and Conservator of our Minds . For if we enquired what is meant by an Entity of Reason , we shall find it to be a meer Nothing , without the Understanding . But if we have regard to the Modes themselves of Thinking , they may be said to be real Entities . Thus , when I enquire what is Genus , I demand nothing else but the Nature of that Mode of Thinking , which is truly considered as a Being , and differs from a Species , which is another Mode of Cogitation . VIII . God understands Entities of Reason only forasmuch as they are conceived by us . Now God doth not contain any of these Entities of Reason or Notions , as if he stood in need of these Modes of Cogitation , to retain the things that he understands ; but only inasmuch as the Mind of Man , whose Modes they are , is perceived by us to be preserved and maintained in its Being by God. We conclude therefore that God is All knowing , and that he contemplates all things by one only most Simple Idea ; for to speak properly , God for no other Reason is called Omniscient , but because he has his own Idea , which being nothing else but his Essence , is therefore inseparable from him , and consequently extends it self to all positive or real Objects . CHAP. XIII . That God is Good , and doth Good. I. In what Sense God is said to be Good. SEeing that no Creature exists by its own Power , and that all thing derive their Essence from God , we must conclude that God is Good and Beneficent . For as by his comprehending all things he is All-knowing , and by his Power to do all things , Omnipotent : So because he hath Created all things , he is said to be Good , and because he preserves the same , Beneficent . II. Good and Evil are Respective Terms . This will more clearly appear , if we consider what Good and Evil is , and wherein precisely the Nature of both doth consist . A thing considered by it self apart , cannot be said to be Good or Evil , but is denominated such with respect to an other thing , to which it is profitable or hurtful . And accordingly , the same thing may at the same time , be said to be both Good and Evil. So the Punishment inflicted on a Criminal is Good , forasmuch as it conduceth to the Safety of the Commonwealth , and to deter others from committing the like Crimes : And yet it is Evil to the Criminal , because by the same he suffers Death , which deprives him of Life , being the dearest thing he enjoys . So likewise the Sea is of great use for the carrying of Ships , and in that regard is a Good to the Merchants ; but Evil when raging by a Storm it Swallows and Shipwracks their Vessels . Yea , there be many Good things , which are not such to all : Thus , to be in Heaven and to enjoy the company of the Blessed , is a Good , yea the greatest Happiness to Man , but yet to Brutes and Plants it is neither Good nor Evil , as having no Relation to them . III. God is said to be Good , as being beneficial to all . GOD therefore is said to be supremely Good , because he does God to all , and is the Conservator of all things , for all things are preserved by his Omnipotence . Moreover , forasmuch as there is no Connexion between the parts of Durations ; and it doth not follow , that because the Creatures exist to day , they will continue to morrow : We may say that Gods Conservation of his Creatures , is a continual production of them . Neither doth it oppose this Truth , that the Will of Man is free , and is oft determined by things without it : Because even those very Actions are determined by God , and are not exerted but by his Good-will , as will be said more at large in the following Chapter . For it implies a contradiction , that any thing should determine the Will , and that the Will it self should not be determined by God , to whom all created things are Subject . IV. The Love of God to Mankind is from Eternity . Gods Beneficence doth not only appear in the Creation of the World , and the preserving of all Creatures ; but he hath also from Eternity testified his Love unto us , by electing us from before the Foundation of World , and by loving us with an everlasting Love. For as Heat cannot but warm , and Light illuminate , so the highest Love cannot but in he highest degree love it self , and all things proceeding from him . And this Eternal Love of God is manifested by a two-fold effect , viz. the Mortal Life we Live here , and the Immortal Life we hope for , hereafter . With reference to the present Life , he hath adornd the Heaven with Stars , that they might assist inferior things with their Light , and promote the innumerable Generations of Natural things ; he hath distinguisht the Elements in their proper Place , endowed them with Qualities , and made them by their inborn Virtues , to concur to the Mixtion and Production of all things ; he hath appointed the Fire for Action , the Air for Respiration , the Water and Earth for Fruitfulness , and the Production of so many kinds of things for necessity and delight , but the chiefest Pledge of Gods Love towards us ; is , that he hath predestinated us to the Adoption of Children in Christ Jesus , so as that we have Redemption by his Blood , and the Forgiveness of Sins , according to the Riches of his Grace . For Grace hath preceded Merit ; neither doth Grace come from Merit , but Merit from Grace . He gave for Nothing , or out of meer Grace , who found Nothing why be should Save , and Much why he should Damn : He prevented us by the Blessings of his Sweetness ; for that Grace tastes sweeter , which helps even those that have ill-deserved , and entertains Thoughts of Peace towards us , whilst we do the VVorks of Death . S. Austin , Serm. 15. de verb. Apost . VI. God is said to be Good and Infinite , respectively onely . But you will say , What shall not GOD be good then , except he do Good to Mankind , and preserve the Universe ? What can be imagin'd more absur'd , than not to acknowledge GOD Good , as well as Immense , VVise , and Powerful ? Notwithstanding this Objection , we must assert , That the Attribute of Goodness did not belong to God before the Creation of the VVorld ; because a Thing considered in it self , and without respect to others , cannot be said to be either Good or Evil : Neither needs this seem strange or absurd to any one , forasmuch as the Goodness we speak of here , denotes a Respect between God and his Creatures , as his Immensity does , which consists , as we have seen , in that Operation whereby he continues them in Being . So that as supposing they were not , tho' he would be present to Himself ; yet Ubiquity , or Omnipresence could not be attributable to him ; so before the Creation of the VVorld , tho' GOD be Good by his own Essence , yet because there was nothing on which he could exercise his Beneficence , he was only Potentially Good , Merciful , a Judge , a Creator , &c. VII . How it coms to pass that God being Good , permits Sin. But some will say , If GOD be Good , why doth he permit the Corruption of Nature , and the Sins of Men to offend his Divine Majesty ? VIII . The First Answer . To which I Answer , First , That it is not repugnant to the Divine Goodness that there are Sins , and that Men swerve from their Duty ; yea , it seems more to comport with his Omnipotent Goodness to bring Good out of Evil , than not to suffer Evil. But yet it is not our business to enquire over-curiously , why God permits Sin , lest we should seem to endeavour with the scanty Line of our Reason , to fathom the depth of the Divine Wisdom . IX . The Second Answer . In the Second place I Answer , That it is not contrary to the Divine Goodness , that he hath not made his Creatures so perfect , as to place them out of the reach of Error , or danger of Falling ; and that he hath pitch'd upon such an Order , in which Sins take place ; forasmuch as Man Sins without any force put upon him ; neither can the Guilt of it be imputed to God : For God did not from Eternity decree Sin , neither did he decree , that Sin should be possible ; for seeing Sin is no positive thing , but a deficiency of Reality , it cannot be of God , but he only hath established that Order , in which he sees the possibility of Sin before his Decree and Will concerning it . And therefore upon this Hypothesis only it follows , that having establish'd such an Order , and making positive Things possible , he can be said the Author of Sin ; forasmuch as by the said Order , Sin is made Possible , which in this sense is not repugnant to the Goodness and Holiness of GOD. CHAP. XIV . Of the Omnipotence of GOD. I. It is an inborn Notion with all Men , that God is Omnipotent . NO Man that ever own'd a GOD , deny'd him to be Omnipotent : This is a Notion all Men brought into the VVorld with them , who therefore when they are in any affliction or danger , lift up their Hands to Heaven , and send up their Prayers to him for the thing they wish for , and thereby tacitly acknowledge his Omnipotence . Yet there are some Philosophers who seem to destroy this Notion , who assert the Essences of Things to be Eternal , as if without the Power of God they had some Nature of their own , to which God at a certain time did vouchsafe Existence , and made them to be Actual Beings . And therefore they say , that Possible things only , that is , such as are so in their own Nature , can be produc'd by God , and that his Power doth not extend it self any further . II. What a Possible , Necessary and Contingent Being is . But because this Doctrin seems to derogate from God's Omnipotence , we will endeavour to shew the Falsity of it , by declaring what the true Nature of a Possible , Necessary , and Contingent Being is , and whence they take these Affections . A Necessary Being is said to be such with a twofold respect , either with respect to its Essence , or to the Effective Principle whence it proceeds . After the first manner , we know that God only doth necessarily Exist ; and therefore he is said to Exist so , as that he cannot but exist ; because Existence is involved in his Conception , so that his Essence cannot be understood without it . But after the Second manner , that is , with respect to the Effective Principle , Corporeal things are said to be Necessary , forasmuch as they can be produced by God ; but not with respect to their own Essence , because we can clearly and distinctly understand the same without Existence , and therefore they can never exist by virtue of their Essence . That is call'd a Possible Being , whose Efficient Cause is known to us ; but yet we do not know , whether he be determined to produce it or no ; and therefore is commonly described , That which hath not been , but might have been ; and in this sense all things besides God are said to be Possible . But if we consider only their Natnre , and not their Productive Cause , we shall call all things Contingent ; because with respect to their Natures , no necessity of Existing is found in them , as in God : Neither is there in them any Repugnancy or Impossibility , but that they may be ; and therefore in case they do exist , they exist so , as that they may not exist . III. All things present , and things to come , depend on God. We will now shew , That all things that are now , or are to come , have their Dependence on God ; and that there is nothing in Nature , that doth not proceed from his Decree . For seeing no Creature exists by the necessity of its Essence , it follows , that they must all borrow their Being from the Divine Decree . For it is evident by the Light of Reason , that it is impossible a thing should exist , which hath no Internal or External Cause of its Existence : Now no Creatures can exist by the Power of their own Nature , and therefore we must have recourse to one only External Cause , viz. the Divine Decree , for their Existence ; in which Divine Decree , if their Existence be not found , they are to be look'd upon as Impossible , forasmuch as they cannot be produc'd by any Cause . From whence it evidently follows , not only that the Existence of all Creatures doth depend of God , but also their Nature and Essence : for seeing there is no perfection which is not in God , there can be no Essence in the Creatures , which should be the cause of Gods knowledge . Wherefore we must conclude that all Creatures before Gods Decree were nothing , and consequently that of themselves they have no necessity to exist . IV. God is the Efficient Cause not only of substances , but also of their Modes . When I say that all things have their Being from the Divine Good Pleasure , this to be understood not only of Material Substance , but also of Thinking or Spiritual ; because not only the properties and Modes of Bodies derive their reality from the Will of God ; but also the Modes of Minds . For it is a meer prejudice of our Youth to imagine that the Modes of Cogitation , Knowledge , Judgment , Affections , and other inward Acts of our Mind do less depend on the Divine Power , than the Modes of Material and Bodily things . Because whatsoever is not God , is of it self altogether nothing ; neither can it exist but by his will ; for since nothing can be the cause of its own Existence , save God alone , it follows that whatsoever exists , must derive all its reality from God as its first Principle . V. In what sense the Natures of things may be said to be immutable . If it be objected that the Essences of things are commonly said to be Immutable and Eternal . I answer , that the Essences of things are only said to be immutable , forasmuch as they are exprest by Definition , and are consider'd Universally , as is commonly done in Sciences , whose certainty requires firm and stable Definitions . So the Definition of a Mind that it is a Thinking substance , is always the same , neither is lyable to any change , tho perhaps there may be a further degree of perfection in the Mind of one Man , than of another . And whereas they are said to be Eternal , or that their Essence was known from Eternity in the Divine Intellect , this does not argue any Eternity in them , but in God ; since to be known in the Mind of God , with respect to the Creatures , is only an Extrinsecal Denomination , or an Entity of Reason , which superadds no reality to things . VI. No things are Contingent with respect to God. As for Possible and Contingent Things , there are none such with respect to God ; Because there are none that of themselves can Exist , and not Exist , or that have real Contingency . For surely there is no less Power to the creating of a thing , than to the Conserving of it ; and since no created thing acts any thing by its own Power , so neither can it give it self Existence by the same . It remains therefore that all things must have their Dependence on God , and that the things that are , be produced by vertue only of the Divine Decree . And forasmuch as there is no Change or Inconstancy in God , we must conclude that the things which he creates , have from Eternity been decreed to be created by him ; so that all Creatures from Eternity had a kind of necessity of Existence ; And therefore that no Things are Possible , Necessary , or Contingent of their own Nature , but by the Divine Decree , which is the only Cause of all things . VII . Nothing can be suppos'd antecedent to Gods Decree . Neither doth it contradict what we have said , that God might have decreed otherwise concerning his Creatures , and that upon that score they may be said to be contingent ; For since in Eternity there is no Before or After , first or last , it is a Vanity to search after those Moments in which God existed before those Decrees , and in which it is supposed that he might have determin'd otherwise . Wherefore since God without any necessity resolved to make Creatures , they are all of them said to exist Contingently , because they include no Necessity of Existing ; tho with respect to the will of God they exist Necessarily : Forasmuch as no greater necessity can be conceived in Things than that whereby an Effect follows from an Efficacious Principle and a Determinate Efficient Cause . How the Will of Man is said to depend on God. There is one difficulty more remains to be discust , and that is since all Creatures are predetermined by God , and that there is a kind of necessity of Existence in them from Eternity , how the Will of Man can be said to depend of God , seeing that it is free , and indetermin'd . But notwithstanding this , we must say that the Will also is conserved by the Divine Concourse , so that it is not in the Power of Man to Will or Act any thing , which is not preordained by God. But how these two things may be reconciled , that God hath decreed all the Acts of our Will from Eternity , and yet our Will remains undertermin'd , is I confess more than I do clearly perceive . I do acknowledg my Mind to be but of a finite capacity ; and the Power of God , whereby he hath not only foreknown all present and future things from Eternity , but hath also decreed and determin'd them , to be infinite and unbounded : Yet cannot this consideration make us doubtful of the Freedom of our Will , since in all our actions we experience our selves to be free , and that it is in our Power to give or withhold our Assent ; which is so manifest that we have good reason to rank it amongst first and common Notions . IX . It is a difficult thing to reconcile the Divine Decree with the Liberty of Mans Will. Hence is it that the Famous Philosopher in the Ninth Epistle of his l. Volume , saith . As to Free will , if we only consider our selves , I must confess we cannot but think it to be Independent : But when we cast an Eye on the Infinite Power of God , we cannot but believe that all things must depend on him , and therefore that our free will is not exempt from his Command . For it implies a contradiction that God should have created Men of such a nature , that the Actions of their will should not depend on his will : Because that is the same as if one should say that his Power is both Finite and Infinite : Finite since there is something that doth not depend on it ; and Infinite , in that he was able to create this thing Independent . But as the knowledg of the Divine Existence , must not take away the certainty of our free will : So neither must the knowledg of our free will , make us to doubt of the Divine Existence . For the Independency we experience and find in our selves , and which makes our actions blame or praise worthy , is not opposite to a dependence of another kind , whereby all things are subject to God. X. God is no less a cause of the Creature when it is made than when it is a making . Gods Omnipotence does not only appear in the Production of things , but also in their conservation : for God is not only the Principle of created Beings when they are making , but also when they are made . Hence it is that he preserves them by a continual Influence ; and should he cease from his Concourse , whatsoever he hath produc'd would fall to nothing ; Because before they were created and he afforded them his Concourse , they were nothing . Neither doth it contradict this , that all things that are produced by God are substances , to whom it does agree to subsist ; for they are not call'd Substances as if they could subsist without the Divine Concourse , but because they are such things , as do not need the assistance of any creature towards their being . In which Preservation of the creatures , the infinite Divine Power is evidently exemplified , in that he hath produc'd all things so , as that they cannot subsist one moment without him , like as the Image of the Sun reflected in the Water , or in a Looking-glass , doth depend on the Sun , not only as to its being , but as to its Preservation or continuance . CHAP. XV. That God is the Creator of all things . I. Some Attributes agree to God from Eternity , others in Time. THO all the Divine Attributes be Eternal , and undistinguisht from his Essence , yet do not all of them in a like manner agree to him . For some of them constitute his Nature , and can only by the operation of our Minds be separated from it , such as are his Eternity , Omniscience , &c. Others again presuppose creatures , and are only attributable to him since the beginning of the World , as to be a Judge , a Creator , &c. Which from Eternity did only Potentially belong to him . But because the Power to create the World was in God from Eternity , and that it appertains to his Nature to be Omnipotent , it is as easy to prove God to be the Creator of all things , as it is to evince him to be Immutable . II. Whatsoever hath a Being , hath it either from it self , or from another . For whatsoever is besides God , either hath the Principle of its Existence from it self , or from another : For natural light evinceth that things can not be made of nothing . If any thing was of it self , it would want nothing ; Yea , it would give it self all those Perfections it hath any Idea of ; but nothing hath the Power of bestowing those perfections on it self , for otherwise it would actually be possest of them ; for the Will is infallibly carried to the Good it knows ; and consequently it hath not the Power of giving it self a Being . If it hath its Being from another , we may then demand whence that other hath his Being , whether from it self or from another , till we come to the last Cause , who is the Author of all things that Exist . III. Forasmuch as the Parts of Time have no necessary connexion , it follows that Creatures are not preserved by themselves . Besides , the Parts of time have no necessary defendence on each other ; neither doth is follow that because a thing is now , it will be the next Moment : Therefore to the end it may continue to exist , there must be some Power , which may each Moment reproduce it : But no such Power is in the Creature , and therefore there must be some Being , whose Nature includes Existence , and which is the Cause why the thing that hath existed hitherto , doth continue so to do . For tho' a thing have begun to Exist , yet doth not its Essence any more involve necessary Existence , than it did before its Existence ; and therefore it stands in need of the same Virtue to continue to exist , as it had to begin to exist . IV. The Essences of things are clearly known by abstracting them from Existence . Moreover we clearly understand , that the Soul of Man is a Thinking Substance ; that a Body consists of three Dimensions , and that Man is a compound of Mind and Body , without any Existence : Wherefore we ought not to ascribe to Man any Power whereby he can exist , and therefore he must be created by God , before he can exist . For every Effect we know is contained in its Cause , either formally or eminently , and seeing neither the Soul nor the Body , nor Man that consists of both , can be the Causes of themselves , they cannot be contain'd in themselves as in their Cause ; and therefore we must look out for a higher Cause that may eminently contain whatsoever is formally found in the Creatures ; and that is that which we call God. V. Abstractions do more clearly explain the nature of a thing . And forasmuch as the Form , according to ARISTOTLE gives Being to a thing , and Concretes are more perspicuously understood by their Abstracts ; for a Confirmation of what we have said , it will be worth our enquiry what Creation is , and whether the name of Creator could be attributable to God from Eternity . VI. What Creation is . As to the first , the received Definition of Creation is , that it is the Production of a thing out of Nothing ; Which may be admitted without Hesitation , if by Nothing we understand a Negation of all Reality , and not any thing Imaginary , which some do suppose to be that out of which all things are produc'd . For some do conceive this Nothing to be , as it were , a matter shut up in an Imaginary space , from whence all things do proceed . Wherefore , lest I should seem to favour their Error , I will take away all Ambiguity and define it thus , viz. That it is an operation , whereby things are produc'd by an efficient Cause , no other Cause concurring with it . So that a thing is said to be created , which besides God needs no other Cause towards its Existence . Where it appears that neither Modes nor Accidents are created , since they depend on the Substance , in which they are , and without which they cannot be conceived : As we have shewed in our Logick , in the Chapter of substance . VII . What we are to understand by the Name Creature . A thing Created is that whose nature or Essence can clearly be understood without Existence . As the Soul of Man , of which we have a clear and distinct Notion , for as much as it is a Thinking substance , abstracted from its Existence . And solikewise we have a distinct conception of a Corporeal Substance , as including three Dimensions , without considering its Existence : And therefore these must be Created by God before they can exist , and when they do so , must be preserved by his continual Influx . VIII . Before the Creation of the World there was no Time. It remains now to enquire whether God , could be call'd a Creator from Eternity , or whether the things created by him could have their Original before all Time. Before we can resolve this clearly , we are to take notice that before the Creation of the World , no Time can be understood by us , seeing that Time is nothing else but the measure of Duration ; or to speak more clearly , is nothing else but a meer Mode of Thinking . For as the Modes of Material things serve for the easier explication of their Natures , so we make use of Time to express Duration , so that it is necessary that before Time could be , there must have been , not only Creatures , but Men also , that might compare the Duration of things Existing , with the Duration of other things , that had a determinate Motion . Now Duration , seeing it is not distinct from the Existence of things , save only by Reason , begins as soon as they began to exist , and ceaseth when they cease to be ; because it supposeth them to be Created . Wherefore they who imagine Duration or Time before the first Production of things , are as deeply prejudic'd as those are who fancy an Extension of Space , without any Bodily Extension . To enquire therefore , whether a Created thing could be from Eternity , is as much as to demand whether there can be a Duration without any Beginning , and which cannot be expressed by any Number whatsoever . IX . God cannot produce Eternal Duration . That such a Duration as this cannot be created by God , appears from hence , that no Duration can be mentioned , but that God is still able to produce a greater . For such is the Nature of Duration , that assign what Duration you please , a greater or lesser can still be conceived , seeing that it is , as it were composed of Parts , and always may be conceived as Divisible into them : For as there are no parts in a Body , altogether Indivisible ; so neither are there any Moments in Duration , but may still be divided into lesser parts to Infinity . X. No Duration can be understood to be in God. Neither can we say , that because God hath been from Eternity , and is still , therefore we ought to attribute to him the greatest Duration that can possibly be conceived ; for it is evident from what hath been already said , that no Duration consisting of Parts can be ascribed to God , but Eternity only , which is not an affection of Existence , but of Essence : And therefore that we cannot conceive any Duration in God , except we have a mind to destroy the Idea we have of him ; forasmuch as it is essential to the notion of Duration that none can be conceived so great , but still greater may , which in no wise can be attributed to God , who is Infinite , and admits no Division of Parts . XI . Whether God could have Created the World from Eternity . You will say that God is as Powerful , whilst he acts freely , as if he did act necessarily , since liberty or necessity of acting , doth not alter the property of Power . But if God acts by necessity of Nature , he must have Created the World from Eternity , forasmuch as his Power is Infinite , and consequently it is no contradiction , that a Creature should be Eternal , that is , be produced without a Beginning of Duration . XII . Answer . I Answer , that this Argument is deduced from a false Hypothesis , viz. that if God should act necessarily , he might for all that be of Infinite Power , which is very false ; because it is the Property of a most perfect Being to act freely , which is so essential to it , that it can never be separated from its Idea : since there is but one only Being , that by us is conceived to be such . XIII . God can produce still greater and greater Duration . Besides , it is the Nature of Duration that how great soever any is supposed , it may be still supposed greater ; and therefore God who is of Infinite Power and a free Agent , may always produce a greater or lesser Duration than the supposed Duration is . But if God did act according to the necessity of Nature , no such Duration would be possible , because God acting necessarily , would only produce that which did follow from necessary Action ; and consequently being unable to produce a greater , his Power would be Bounded , which is destructive of the Idea of God. CHAP. XVI . Concerning Gods Government of the World , and Providence . I. Supposing God to be All knowing and All powerful , he must also be Provident . FRom what hath been already said of the Divine Attributes , we may easily conclude that God is Provident , and the Ruler and Governour of all the World , and all things that are in it . For seeing that he hath Created all things , and by his alone Power , brought them into a State of actual Existence , it seems to be Repugnant to his Goodness and Omnipotence , that he should neglect the care of them , and leave them to the Government and disposal of others . For since he is All-knowing , All-powerful , and supremely Good , he cannot but keep his Eye upon his Creatures , and govern and dispose of them for their good . For Will and Power , with respect to things without them , are not distinguisht from the Divine Understanding ; and since God hath decreed that at some certain time , Creatures should exist , he also determined them to exist so , as that their Essence and Existence might depend on his Will and Power , without being able to attain any Ends without his special Providence . II. What Providence is . By Providence , Divines understand that Eternal disposal , by which God doth Efficaciously direct all his Creatures to certain ends foreseen by him , so as that in time they come to attain them . For Providence doth not only denote the operation of the Intellect , by which a thing is foreseen before it be brought to pass ; but also that of the Will , or the Decree and Counsel , whereby , before the work is done , it is disposed to the end appointed for it . And that such a Providence as this appertains to God , may be proved by several Reasons . III. God would not be the most perfect Being in case he did not take care of his Creatures . For First , it belongs to the Nature of God to bemost perfect ; but how can he be said to be so , without being present to his Creatures , and taking care for them ? For it is without doubt a greater perfection to provide for the Universe , and to govern and dispose all things for the best , than to leave them to themselves , or to be disposed of by others . For by so much the more perfect , any one is , by how much the more he excells others in Command , Wisdom , Goodness and Liberality : But if the care of the World should be supposed taken away from God , we shall make him an Idle and Unactive Being , as EPICURUS doth ; and by this means shall be able to conceive a more perfect Being , who together with the highest Felicity has the Sovereign command over , and disposeth of all things , and whose Tranquillity is not disturbed or interrupted by the Multiplicity of the Affairs he manageth . Wherefore , since nothing can be admitted to be more perfect than God , we must conclude , that he takes the care of , and disposeth all things . For it is not becoming , as DAMASCENUS saith , that there should be one Builder or Architect of this World , and another that takes Care of it , forasmuch as this would Argue a disability in them both ; in the one of Making or Effecting , and in the other of taking Care for and Disposing of it . IV. Gods Providence is proved from his Eternity . Secondly , Forasmuch as God is Eternal , having no Bounds of his Existence , it is necessary that his Understanding should be Eternal also , because it belongs to his Essence to be conceived by us as Supremely Intelligent : Now his Understanding is not distinguisht from his Will or Decree , but only by Reason , or our meer Conception ; therefore when we say that God understood , or knew all things from Eternity , we at the same time assert , that he also from Eternity provided for all things , and designed them to their appointed ends ; seeing that his Will is Supremely Efficacious , and never fails of the ends he intends . Book I. Part 2. Chap 16. M Vander Gu●●t . Sculp . G. Freeman Invent : To the Worship-full Ieffrey Ieffreys of the Priory in Brecknockshire & of the Citty of London . Esq . This Plate is humbly Dedicated by Richard Blome V. The same is made out from his other Attributes . The same may be confirmed from the rest of his Attributes : For if God be Sovereignly Intelligent , he must also be most Wise ; and will not he be accounted more Wise by governing the World , and administring all things , thereby not only Speculatively , but Pratically understanding them ? If God be most Powerful , he must be able to do all things , so as that nothing may be in a condition to resist his Will , or escape his Power . But how can this be , except he govern the things he hath produced , and concur to their Actions ? If he be most Good , sure it is necessary that all Creatures experience his Goodness : But how can that be , if he takes no Care of them , nor Provides for them ? Therefore we must own the Divine Providence ; forasmuch as without it , his chiefest Attributes are destroyed , and nothing is left whereby we may demonstrate his Sovereign Power , Wisdom and Goodness . VI. God's Providence , and Government of the World , may be proved from the things themselves . Another Argument may be taken from the Creatures themselves . For whosoever considers the frame of this World , and the order of its Parts ; whosoever takes a view of the Earth , the variety of its Seasons , the different Shapes of Living Creatures , the manifold Virt●es of Plants ; whosoever scans the Fabrick of the Microcosm , MAN , the multiplicity of his Members , with their admirable Connexion and Harmony : Whosoever takes a Prospect of the Heavenly Bodies , their Lustre , Beauty , constant Motion and Proportion , will be forced by his Conscience to acknowledge , that these Wonders could not be the product of Chance and Fortune , but the Effect of the Great GOD. And therefore CICERO , in his Book de Natura Deorum , speaks thus : Shall we call him a Man , who beholding the certain Motion of the Heavens , the wonderful Order of the Stars , and all so fitly link'd and suited together ; shall suppose that all this is manag'd without any reason , and by Chance ; when indeed we can never have any Conceptions of the greatness of that Wisdom and Counsel which disposeth all these things ? When we see any thing moved by Springs and Engins , as a Sphear or Watch , have we any the least doubt of their being the Effects of Reason ? and when we see the Heavens moving with admirable Swiftness , and constantly to persist in their Motions , sinishing their Anniversary Revolutions , for the Health and Conservation of all Things ; shall we question whether these Things are order'd and directed by a most Excellent and Divine Reason ? VII . How any thing can be said to be by Chance , if all things be rul'd by Providence . Tho' no body that owns a God , can doubt of his Providence ; yet this Difficulty remains to some , How any thing can be said to be by Chance in the World , if God governs all Things , and directs them to their certain Ends ? And besides , How comes it to pass , that God taking Care of all things , his Thunder often spares the Wicked , and strikes the Innocent ? Or , if every Motion , and all other things that keep their certain Periods , be called Divine , must we not also suppose Tertian and Quartan Agues to be such , whose Motion and Returns are so certain and constant ? VIII . With respect to God , nothing happens by Chance . There is no question , but that many things happen by Chance in the World , with regard to Second Causes ; but nothing at all with respect to the First Cause , who disposeth and fore-ordains all things from Eternity . For Chance and Fortune are only in respect of him , who is ignorant of the Intention of the Director : And forasmuch as the Divine Intention is hid from Man , till the thing be done ; therefore the same , with respect to Man , is said to happen by Chance , but not with respect to the First Cause . How many things seem to happen in a Commonwealth , which with reference to us are fortuitous ; but not so with respect to the Prince who governs it , who order'd things so on purpose , and made use of such Ministers and Means , so as that things could not happen otherwise ? And whereas it is further objected , That sometimes Thunderbolts pass by the Wicked , and light upon the Innocent . IX . How things come to be so turbulently carried in this World. We are to consider , that all these things happen by God's particular Direction , for very good ends , which tho' they be unknown to us , yet are not we therefore to deny them : For it is too great a pi●ce of Rashness , to have so great an esteem for our own Wit , as that whenever we cannot find out the True Cause of any thing , we should presently suppose the World to be without a Ruler , and that the Concerns of Men are committed to the management of Blind Chance . X. Why wicked Men prosper in this World. But you will say , If there be a Cause that presides over Inferiour things , why do we perceive such Confusion in the World ? Why are the Good neglected and oppress'd by Poverty , Slavery , and Diseases ; whilst in the mean time the Wicked flourish , and abound with Honour and Riches ? XI . Answer . This is the Complaint of most Men , who being ignorant of the True Good , are taken with the outside of Things : For if we attend to the Nature of Good , we shall find that Vertue alone deserves that Name , which whosoever wants , is worthily esteem'd Miserable . Hence it is that Wicked Men , being devoid of Vertue , do not make use of those outward good things with that Moderation of Mind as they ought , but in the midst of their Riches suffer Want , and in the midst of their Pleasures , Pain and Torment ; so that they are not True good things to them , but in appearance only . But if on the other hand , Evil things happen to those that are Good , forasmuch as they are conducive to the exercise of their Vertue , they ▪ ●re rather to be accounted Good things , because by them their Minds are estranged from Worldly Lusts , and raised to the love and desire of Heavenly things . This therefore is the greatest Instance of Providence , when we see Good things bestowed upon Ill Men , that they may grow the worse ; and Evil things upon Good Men , that thereby they may grow better . XII . Why God Created Men and Angels , whom he foresaw would be corrupted by Sin. But you will say , That God created Angels and Men , whom he foresaw would fall and continue in Evil or Wickedness . St. AUSTIN Answers , That GOD would not have created any Angel or Man , whom he foreknew would fall into Sin , if he had not known , at the same time , to what good Ends he could make use of them , and so compose the Harmony of this Universe , as a pleasant Song of Discords mix'd with Concords : For as these make the Sweetness of Musick , so the Beauty of this World is made up of these Contraries . And therefore in the Third Book of Free-Will he plainly teaches , That GOD ought not to have abstained from Creating of the Creature , whom he foresaw that by his own Fault ( not by any of his Creator ) should lose that Beauty in which he was created : For as a lost and wandring Horse is better than a Stone , which cannot wander , because it wants sense and motion ; so that Creature is more Excellent , which sins by its Free-will , than that Creature which doth not sin ; because it hath no Free-will . And as I would commend Wine as good in its kind , tho' I blame the Man that is made drunk by it , and yet would prefer this drunken and blamed Man before the praised Wine that had made him drunk : So likewise a Bodily Creature is to be commended in its degree and kind , whereas they are Blame-worthy , who by the immoderate use thereof , are turned aside from the Perception of Truth . The Third Part OF THE INSTITUTION OF PHILOSOPHY . VIZ. DAEMONOLOGY ; OR , Of Intelligences and Created SPIRITS , GENIUS's and DAEMONS , Commonly called ANGELS . A Prefatory Discourse . Of the Division of Created Things ; the Definition of Pneumaticks , or the Doctrin of Spirits ▪ and its Certainty . I. The aim of the Author in this Treatise . NOtwithstanding that to Treat of ANGELS does seem chiefly to belongs to Divines , and the consideration of their Nature and Faculties may be thought to exceed the Bounds of Metaphysicks ; yet I think it may not be useless to try what Natural Light can do in this case , and how far by the Guidance thereof , we may discover their Essence , Existence , and Operations . II. Division , a great Help to the Knowledge of Things . They who endeavour to search into the Nature of Things , take care to divide them , as fitly as may be , into those Parts which may be helpful to the obtaining a more distinct Conception of them . For Division takes away the doubtfulness of Terms , and makes that which before was confusedly perceived under one Name or Word , to be more clearly understood by more Words , expressing the Parts of it . III. The Division of Substance into Thinking and Extended . It is notorious to all Philosophers , that Created Things are divided into Spiritual and Corporeal , or into Thinking and Extended . By the Name BODY , all Material or Extended Substances are understood , of what Nature soever they be , whether they be more Gross or Subtil ; whose Essence consists of three Dimensions , or in Extension in Length , Breadth , and Depth . And we call that an Incorporeal Substance , or Immaterial , which is without Extension , and all those Modes and Accidents which accompany a Bodily Substance . Whence it appears , how very improperly the Name of SPIRIT is attributed to the Air , Wind , Fire , Vapor , &c. because tho' these Things be more Thin and Subtil than others , yet don't they for all that cease to be material , impenetrable , and indefinitely divisible . Book . 1 Part. 3. Chap. 1. G. Freman Inv ▪ I. Kip. Sc● To the most Honourable Rose Marchioness Dowager of Antrim ▪ relict of the most Honourable Randall mc. Donnald , Marquiss and Earle of Antrim Viscount Dunluce ; and sole daughter and Heyress of Sr. Henry O'neille of Edenduf-Carick in the County of Antrim in the Kingdome of Jreland &c.w. This Plate is humbly Dedicated by Richard Blome Book . 1. Part. 3. Introducti●n . G. Freman Inv. 〈◊〉 Kip 〈◊〉 To the Worshipfull John Jeffreys of Llywell in the County of Brecknock and of the Citty of London Esq . This Plate is humbly Dedicated by Rich : Blame IV. Quantity cannot be attributed to Angels We may also perceive with how little Reason some do attribute Quantity to Angels and Human Souls , and conceive one part of them to be without another , as if they were Material . Whereas if a Man consider a Corporeal and Intellectual ▪ ●●stance , he will find them to be distinguisht by Properties and Attributes , and to have no affinity at all with each other . For what Similitude can there be supposed between a thing extended , and a Being devoid of all Extension ? Or what agreement is there , between a Substance that understands , wills , and imagins , and that which is divisible into parts , and is diversified by Figures , and which is commensurate to a certain space and Place ? V. Substance is wrongly divided by some into immaterial and Bodily . Others divide created substance into Immaterial and Corporeal ; but this Division doth not seem to be exact , or made according to the Rules of a right Division : because Immaterial and Incorporeal being Negative Terms , can represent no positive Idea to our Mind , such as is desir'd by all , where it may be had . For Negative Words represent no Properties or Attributes to our perception , and rather tell us what the thing is not , than what it is . True it is , that this Diviston is set down by many Philosophers of great note : but forasmuch as a Privative or Contradictory opposition ( which those words do import ) cannot have place in a lawful Division , this is not to be admitted . Moreover this Division seems to be grounded on this Childish mistake , that the Substance of Material things is more real , than that of Spiritual ; and that therefore the former , as more perfect , are exprest by Positive words , but the latter , as more Imperfect , by Negative . VI. It better divided into Thinking and Extended . Wherefore Created Substance is more fitly divided into Thinking and extended , or into Intellectual and Corporeal ; because then the Dividing parts , are apprehended by Positive conceptions , and exprest by Positive Terms . For without doubt , we shall have a more clear notion of an Angel by conceiving him Intelligent , Willing and Powerful , than by apprehending him Immaterial , Incorporeal and Invisible : Forasmuch as these Negative Attributes , as I said , rather declare what an Angel is not , than what he is . Besides , he that perceives the Positive Properties of a thing , does by consequence understand the Negative ; but not on the contrary : For he that knows an Angel to be Intelligent , doth at the same time know him to be Incorporeal and Invisible ; but tho' he understand him to be Incorporeal and Invisible , he does not therefore understand him to be Intelligent ; for the Air is Invisible , and yet is neither Intelligent nor Incorporeal . Wherefore created Beings are very properly divided into Intellectual and Corporeal or Material , for no substance can be conceiv'd by us , which is not either Thinking or Extended , or in other words , which is not Active or Passive . Hence St. AUSTIN saith , Amongst things , some thing is acted , and not Acting , as a Body ; another is Acting , and not Acted , as is God ; and a third Acting and Acted , as are all Spiritual Substances . VII . The Distribution of Science Universally consider'd . As all created substance is divided into Material and Intellectual , so the knowledge of that Substance is distinguish't into SOMATICA , or the Science of Bodies , and PNEUMATICA , or the Science of Spirits : Which may again be subdivided into other Species , according to the various notions under which a Body or Spirit may be considered . For as a Body is conceived by us , either as Natural , or as 〈◊〉 or as having Quantity , and being Figur'd , or as subject to Sickness and recoverable ; 〈◊〉 accordingly divers Species of Sciences are constituted . Natural ●hilosophy considers a Body as Natural , and explains its Essence and Properties . Mechanical Science Minds the outward frame and structure of the Body , and the figures it obtains by workmanship and Art. Mathematicks take to task the various Modes of a Body , as the figures which bound it ; the situation of one part with reference to others ; the Motion or change of situation ; and Rest or continuance in one place : Lastly , Physick or Medicine considers the Body as subject to Diseases and recovery , and endeavours to maintain the health , or to restore it when lost . VIII . The Division of Pneumatica , or the Science of Spirits . In like manner as Intellectual Substances are divided into God , Angels , and the Souls of Men ; so Pneumatica is divided according to the Diversity of the objects it contemplates into Natural Theology , Geniography or the science of Angels , and Psychology , or the Doctrin of the Soul. Natural Theology considers the Essence of God and his Attributes ; Geniography the nature of Angels and Intelligences , and Psychology examines the constitution of the Mind of Man , its Faculties and Passions . So that Pneumatica is nothing else but the science of Spirits , which admits of divers names , as it Considers God , the Angels , or the Soul of Man. IX . The certainty of the Science of Spirits . The certainty of this science is very clear from its Definition , because it treats of Incorporeal things , and such as are not subject to change : For if Natural Philosophy which treats of a Natural Body , and Mathematicks which handles the Modes that follow it , deserve the name of Science , because they are founded on Axioms of Eternal Truth , much more doth the Doctrin of Spirits deserve the name of True Science , forasmuch as it is not only grounded on General Propositions , but likewise borrows its certainty from the Object it considers , and deduceth clearer Conclusions thence , than Natural Philosophy doth from a Body or extended Substance . For tho' the vulgar sort of Mankind is apt to be mistaken , and doubtful about Immaterial Substances , whether they do really exist , and think that the name of Thing ought only to be attributed to Bodies ; yet the Lovers of Wisdom do own Thinking substances , to be much truer , and much more real than any Bodily or Material Beings . CHAP. I. Of the Nature of Angels . I. What we are to understand by the Name of Spirit . THE Division of created Substance into Thinking and Extended being suppos'd , it will not be difficult to conceive what a Spirit is , and how it is to be distinguisht from other things . For the Word Spirit is here to be taken in its most proper sense , for such a substance as is endued with the Faculty of perceiving and willing . Because as the formal Reason of a Body consists in Extension , which is always attended with Divisibility and Impenetrability ; so the essence of a Spirit consists in this that it is a Thinking Substance , the conco●itants whereof are Indivisibility , Perception and Volition . And as a Body cannot be conceived without Extension , so neither can a spiritual Substance without Cogitation : And therefore it is necessary that Cogitation do constitute a Spirit in its spiritual Nature , as Extension constitutes a Body in its sensible and divisible Nature . Forasmuch a● according to ARISTOTLE , that is suppos'd to belong to the Essence of any thing , without which it cannot be understood . II. Some think there is no Substance but what is Material . And whereas some suppose they cannot conceive an Angel without Extension , and so confound the Notion of substance with that of Extension ; this proceeds only from a false prejudice they have entertained , viz. that there is nothing Intelligible , but what is likewise Imaginable , which certainly is a very great mistake ; for Angels and all other Spiritual Substances , cannot be reached by our Imagination , but only by our Intellect . For all Men generally take an Extended Being , to be somewhat Imaginable , in which there are various parts of a determinate Magnitude and Figure , and whereof the one is not the other ; which Notion in no wise can agree with Spirits . III. Spirit is a general name to Angels and Daemons . By the Name Spirit , therefore we are here to understand a Finite Thinking Substance , altogether independent on , and free from Matter : Under , which Angels , Daemons and Intelligences are comprehended ; neither is there any Distinction between them , save only that the Angels are Good , and the Devils Evil ; that these aim at the Destruction of Mankind , the other assist their Salvation ; these abide in Sin , the others continue in Grace ; these are bound in Hell , the other enjoy the Vision of God in Heaven : All other things , as Essence , Existence , Knowledge , Power , the taking up of Bodies , Talking together , &c. being common to them both . IV. The Angels are Immaterial Substances . From the Definition of a Spirit or Immaterial Substance , we may with great Evidence conclude , that Angels are Pure Spirits , or as DIONYSIUS in his fourth Book concerning Divine Names , saith , Free from Matter , and Incorporeal . Because a Thinking and an Extended Substance , are altogether distinct from each other , so that the one of them can be clearly perceived without the other . For we most clearly perceive a Spirit or Thinking Substance without a Body ; and on the contrary , a Body without a Spirit . Now things that are thus distinguisht , cannot agree to one and the same Subject : Because these Attributes are altogether different ; and there can be no greater opposition between Attributes of Substance , than Diversity . And therefore to say , that Extension and Cogitation agree to one and the same Subject , is in effect to affirm , that one and the same Subject can have two Natures or Essences , which cannot be said of a Simple thing without a Contradiction . Because Cogitation and Extension are not only two Essential Attributes , but also constitute the nature of the thing to which they are attributed , and are more inconsistent , than Blackness and Whiteness , Heat and Cold , in the same Subject . For Heat and Cold may succeed one another in the same Subject , and the same thing which is Cold now , may afterward become Hot : But it is altogether Contradictory that Cogitation and Extension should be in the same simple Subject , and constitute two Natures at once , or Successively . V. Forasmuch as Angels are Indivisible , they are likewise Incorporeal . Moreover , if Angels were Material , they might be divided ; for Divisibility is a Concomitant of Extension ; but Angels are not Divisible , therefore they are not Corporeal or Extended . The Minor is thus proved : The Essence of an Angel consists in Cogitation , which admits of no Division ; or no body 〈◊〉 the half of a Thinking Being ; wherefo●● Angels are exempt from matter , and from any Corporeity , how subtil soever the same may be conceived . VI. The effects of Angels proves their Incorporeity . The Immateriality of Angels may be made out from some Effects that exceed all Human Power , and the utmost activity of Bodily force : Such as are the Antient ▪ Idol Oracles ; the Speech of PEOPLE POSSEST , which are often in those Languages , which the possessed party does not understand ; the Penetration of Bodies , and such like , which are an incontestable proof of Intelligent Natures , and which exert their Activity without the help of any Body . Besides we Read in Scripture that a vast mult tude of Devils entred one Body , Mark 5. yea , a whole Legion , which according to the most common Account contains 6666 , which is absolutely impossible , if the Devils have Bodies and take up a determinate place . VII . Whether Angels be capable of Generation , They who assert Angels to be Compound Beings , and to have Bodies , tho' much purer , and of a more subtil matter than ours , endeavour to confirm their Opinion from Gen. 6. where it is said , that the Sons of God came in unto the Daughters of Men , and they bare Children to them , and the same were Mighty Men or Giants . Which could not be , except we suppose the Angels to have Bodies ; Spirits , as purely such , being incapable of Generation . VIII . What we are to understand by the Sons of God in Scripture . But this place is wrongly interpreted ; for by the Sons of God in that place we are not to understand Angels , but the Posterity of Seth , who imitating the Pious conduct of Enos , did worship God , and call upon his Name ; but their Posterity degenerating from the Piety of their Fore-fathers , and plunging themselves into Carnal Concupiscence , joyned themselves with the Daughters of Men , that is , with Cain's Posterity ; from which Conjunction Giants were born , that is , monstrous and deformed Bodies , as a Punishment of their Lust . For it is contrary to Reason to suppose , that Angels can Generate . Wherefore , the Fathers of these Giants were not Angels , but Men , as the Scripture sufficiently declares , Gen. 6. 3. My Spirit shall not always strive with Man , for that he is Flesh . IX . Objection that the Angels will be equal to God in the Simplicity of their Natures . But will some say , if the Angels be altogether exempt from Composition , and any Matter whatsoever , they will be as Simple as God himself as being the one as well as the other Pure Spirits , having only an Essence , and some Modes , which do not hinder Simplicity . X. The Simplicity that is in God is very different from the Simplicity which is in Angels To which I Answer , that tho' neither in God , nor the Angels there be any Composition of Matter and a Substantial Form , yet are not the Angels exempt from all other Composition , as consisting of Potentiality and Act , of Essence and Existence : Which Composition is not to be found in God , forasmuch as the Divine Modes are only distinguisht by Reason ( that is , our way of Understanding ) from the Essence of God. Wherefore the Schoolmen call Angels and Souls Impure , and Imperfect Acts , but God the most Pure and perfect Act. Hence it is that DESCARTES in the 23 Article of the first Book of his Principles , Teacheth , that our Mind ( and the same is to be understood of Angels ) doth understand , and will , by Operations that are in a manner distinct ; whereas , God by one and the same most Simple Operation , doth Understand , Will and Act , XI . Angels do not understand all things actually . Besides , Angels have not actually all the Cogitations they can have , seeing that many things can be Revealed to them by God , and we understand them to have many Thoughts potentially only ; so that at the same moment of time , they are conceived as Thinking in part Actually , and in part Potentially . Which is sufficient to denominate them Compounded , and excludes them from the Simplicity which is in God. CHAP. II. Whether the Existence of Angels be demonstrable by the Light of Nature , and how the same may be Evinced . I. The Antient Philosophers believed Angels . IT was the constant Opinion of the Antient Philosophers , that there were Daemons and Genii or Intellectual Substances , which did preside over the things of this World , and were the managers of Heavenly things also , as so many Divine Ministers . For they thought it not beseeming the Majesty of God , to Administer the World by himself , but that he made use of Ministers and Servants , in the discharging of so many different Offices . For should God be thought inferiour to the King of Persia , who residing at Susa or Hispahan , Govern'd his large extended Empire , and by the Hands and Heads of others , was every where present with his Subjects , provided for them , and defended them ? Seeing therefore that God hath his Ministers , they must needs be Spirits , that is , most active and ready to expedite his Commands : But how can they be such , if they be clog'd with the weight and cumber of a Body ? Whence they conclude , that there are Angels , which are call'd Genii , forasmuch as they assist Men ; and Daemons as they are the Administrators of this lower World ; this is confirmed by a Verse quoted by CLEMENS ALEXANDRINUS , and ascribed to ORPHEUS . Standing about thy Throne the Angels are , Who of Mankind do take the Active Care. II. God can govern the World by himself . By this way of Arguing it appears , that the Antient Philosophers did believe Angels , tho' it does not prove that they really Exist ; forasmuch as all those things , which they commit to the care and management of Genii and Daemons , may be done by God alone . Neither indeed is it unbecoming the Divine Majesty , by his own Power to provide for his Creatures , without the assistance of any Ministers , to share in the Burthen of the Government : For God being Omniscient and Omnipotent , always chuseth that which is best , and therefore does not stand in need of any Angelical Assistance , in the Execution of his designs . And if there be any Intelligences in the VVorld , that perform his Commands , that is because God thinks it best , and most conducing to that State of the VVorld , which in his Wisdom he hath allotted it , that so the Universe should be a kind of Common-wealth , wherein He as Lord paramount , should Govern and Administer all things , especially the concerns of his Rational Creatures by the Mediation of Angels , as subordinate Magestrates under him . III. The Existence of Angels cannot be demonstrated à Priori . Neither indeed is it so easie a matter , to prove the Existence of Angels by the Light of Nature only ; because tho' we have a clear and distinct perception of Spiritual things , as they are Thinking Beings , and distinguished from things extended ; yet forasmuch as their Existence is only Possible and Contingent , all that we can infer from thence is only thus much , That Angels may Exist , but not that they do really so . For if the Existence of Angels could be demonstrated , it must be by an Argument à Priori ▪ when we demonstrate any thing by its nearest Efficient Cause ; but so we cannot prove ▪ that God the Maker of all things hath Actually Created Angels , since Creation depends one the meer Good Pleasure of God , which cannot be known to any without a Special Revelation . IV. The Existence of Angels proved from their effects . Wherefore we can have no certainty of the Existence of Angels , save only from their Effects , or other signs that argue their presence . Thus we may prove , that there are Angels , from Persons Possessed , who tho' they be altogether Ignorant and Illiterate , do notwithstanding Speak strange Langguages , and Discourse of several things beyond their Capacity ; declare what is done by Persons far absent , and are carried through the Air , notwithstanding the weight of their Bodies . Who can deny , but that all these things must be performed by Spirits , since they Transcend the Activity of Bodies , and the Power of Nature ? V. Soothsayers and Oracles prove the Existence of Daemons . The Existence of Angels is confirm'd by the Answers of Idols , and the Predictions of Soothsayers , and those unwonted Motions , the Cause whereof cannot be assigned , unless we should say , that they are produced by such Invisible Agents . For we must not say , as some do , that these Effects may be produced by the First Cause ; because God never Thwarts himself , nor does any thing Derogatory to his Glory , as are the Idol Oracles , and things done by Persons that are Possessed . VI. From the inactivity of Matter , we may infer , there must be Spirits to move it . It is a received Axiom amongst the Antient Philosophers , That a Body cannot move it self , or that whatsoever is moved , is moved by another : Wherefore there must be allowed some Active Principle , that may move Matter . For evident Motions must have a Cause , which cannot be Coporeal ; for so the Question would return , By what Principle that was moved , and so to Infinity , till we come to some Immaterial Cause . Hence it is , that ARISTOTLE and other Philosophers hold , That Intelligences move the Heavenly Bodies : And consequently , that the Superior Bodies communicate no other Motion to Inferiors , but what they have first received from the Angels . VII . Reason convinceth us of the Existence of Spiritual Substances . Neither do we want very probable Conjectures of the Existence of Angels , if we consider the Harmony and Order of the World , and how its extream Parts are linked together , by Intervening Middle Parts . For since we see some things in the World , that are Compounded of a Thinking and Extended Substance , as Man , who consists of Soul and Body ; it seems very Rational , that as there are things that are altogether Bodily , or that include nothing but Extension ; so on the other hand there should be Spiritual Substances , whose Idea involves nothing but Cogitation . VIII . Apparitions of Angels . This may be confirmed from divers Apparitions of Angels mentioned in Holy Scripture , which happened in divers Places and Times : Thus , they appeared to Jacob as he was on his Journy , Gen. 32. To Zachary in the Temple , Luke 1. To Guideon in his Fathers Ground ▪ Judg. 6. To our Saviour in the Garden , Luke 22. To the Childeren in the Fiery Furnace , Dan. 3. In the Prison to Peter , Acts 12. At our Lords Sepulcher , Mat. 28. In the Wilderness to Hagar , Gen. 21. CHAP. III. Of the Faculties of Angels , and first of their Vnderstanding , and its Object . I. A thinking Nature hath two Faculties . INtellectual Nature hath two Faculties , Understanding and Will , which are as it were its Properties , and inseparable from it . The first of these perceives Objects by contemplating the Notions , it finds in it self ; the other determines an Intelligent Being , to the embracing or avoided of a thing , or to suspend its Judgment , where the thing is not sufficiently understood . And forasmuch as these Faculties are distinguisht at least by Reason , and are variously conversant about their Objects , we will also separately handle them , speaking first of the Understanding , and afterwards of the Will. Because it will conduce much to the discovery of the nature of Angels to know how far their Knowledg and VVills do extend . II. The Various objects of Angelical knowledg . As to the Object of Angelical Understanding , the Schoolmen dispute , First , whether Angels and Devils do understand the mysteries of grace by their natural ability . Secondly , whether they know the Thoughts of men , and can penetrate the secrets of their Hearts . Thirdly , whether they know Future things . The First Question I leave for Divines to determine , contenting my self to speak a few words to the two latter , which do not exceed the Bounds of Philosophy , III. The Common opinion of Schoolmen concerning the knowledg of Angels . As to the second Question , viz. whether Angels know Mens thoughts ? the common Opinion is that Angels and Devils cannot naturally know the Thoughts of Men without their consent . The Cause of this hiddenness of Mens Thoughts , some ascribe to the Free VVill of Man ; others to the Abyss of Mans Heart ; others to the VVill of God , who denies his Concourse to the knowing of them ; others to the nature of Mens thoughts , which cannot objectively occur to others without the VVill of him that thinks them . IV. The common opinion refused . But indeed all these Reasons are very weak , and do not at all prove that the Thoughts of Men are inscrutable by Angels ; because the Perceptions and Determinations of Mans Mind , are in themselves no less Natural , than the very nature of Angels : And therefore as an Angel beholds his own thoughts , there seems no Reason , why they should not as well perceive those of other Angels and Men , seeing they agree in Substance . Besides , it cannot be doubted but the Angels understand their own thoughts , and those of others too , with their consent : But the Identity or Sameness of subject , or anothers consent , doth not encrease the Faculty , or communicate any perfection to it , or render the understanding Faculty more proportionate to its Object ; wherefore if Angels by the consent of another can penetrate his thoughts , they may as well without it . Neither is it any objection against this , that humane Actions are free , and depend on their Wills , because all the foremention'd difficulties recur also upon this : And this only seems deducible from it , that Angels know such Acts as these to be free , and like to those they themselves produce . But who will say that Elicit Acts have such a dependence on the will that they cannot be known by another , without the consent of him that Elicits them , seeing there is no difference between Acts that are free , and such as are not free ; and that the same Act may successively change its nature , and of Free become Necessary ? Wherefore I think we may conclude , that as Angels ▪ can know Acts that are not free , so likewise may they those that are free . V. That Angels do penetrate the secrets of Mans Heart . Wherefore let this stand fast , that Angels can perceive the Thoughts of Men : For seeing that Angels are Intellectual Substances , and that the Perception of the Understanding and Determination of the will , are the operations of Intellectual Faculties , there must needs be a Proportion between them . Besides , there are but few determinations of our will , which are not discovered by some signs , as by the motion of Spirits about the Heart , or by some outward tokens , which may give an occasion to Angels and Devils to discover the Thoughts and Affections of the Heart . But if all those signs were taken away , yet there is such an Agreement or Correspondence betwixt the Operations of the Mind , that they cannot but naturally perceive the Conceptions of our Understandings , and Decrees of our Wills. I my self some few years since heard a Devil speaking out of a possessed Woman at Brussels , who revealed the inward thoughts of many that came to her , tho' they were not discoverable by any sign . And when one of the standers by asked the Spirit , What it was he thought of at that instant ? He told him that he resolv'd to take a Journey the next day , which he could not deny , but it was so . Neither needs this seem strange to us , seeing that we our selves would know as much if we were not shut up in these Bodies ; and therefore are our thoughts hidden from others , because the Eyes of Men cannot pierce into out Breasts , which by reason of their materiality , are impenetrable . And it is probable that when some of the Holy Fathers deny'd the knowledge of Mens thoughts to Angels , it was for no other reason , but because they held them to be material . VI. An objection from Scripture . If you say that this Opinion seems contrary to Scripture , I. Kings 8. 29. ver . For thou only knowest the Hearts of all the Children of Men. And Jerem 17. ver . 9. The Heart is deceitful above all things , and desperately wicked , who can know it ? I the Lord search the Heart and try the Reins . In which places by the Heart are meant the secret thoughts , and whatsoever immediately depends on the Mind . VII . Answer . This Objection is easily answer'd by saying , that the Scripture in these places doth distinguish God from Men , with respect to the knowledg of thoughts , but not from Angels and Devils . And whereas Holy VVrit seems to attribute this Priviledg to God only , not to Angels ; this is , because it considers the Angels as Gods Ministers , and therefore ascribes to God whatsoever is done , or perceiv'd VIII . By the knowledge of Future things , we are not to understand that which is gathered by conjectures . by them . As to the Third Question , whether Angels know things to come ? We are to suppose that this is not to be understood of a knowledg of Futurities that may be gather'd by conjecture from probable Causes ; as a Master of a Ship foresees a Tempest , or a Physician the probable Event or Issue of a Disease ; or a General the Event of a Battle ; but of the Knowledg of things that are meerly Fortuitous and Contingent , which have no causes , or which are the effects of Mans free will ; as that John will be kill'd by a Tile falling from a House ; or that Peter is to take a Journey to morrow . IX . Angels naturally cannot foreknow Future things . I say therefore that neither Angels nor Devils do foreknow future Contingencies , which either have no certain Causes , or depend on Free will. The Reason is because an Effect must be known either in it self , or in its cause ; but these Futurities cannot be known either way , and therefore cannot be known by Angels . That they cannot be known in themselves is evident , because they are not determin'd , neither have any necessity of existing ; nor in their Cause , for that is free , either to produce or not to produce an effect . This may be further confirm'd thus ; Angels are ignorant what themselves shall act , before they have resolv'd it with themselves , and therefore much less do they know what others will do . And therefore some Schoolmen are of Opinion , that the Devils did not foreknow their Fall , nor the Miseries consequent upon their Sin. X. Yet they may probably Conjecture of things . Yet it cannot be deny'd but that Angels and Devils may know many things by conjecture ; since they can have a great insight into the Temper and Propensity of men , by knowing their Manners , and discerning the resolutions and thoughts of their mind by external signs and tokens . CHAP. IV. Of the Will of Angels . I What the Will is , and whether it be found in Angels . THE Will is here taken for that Power or Faculty whereby an Intellectual Nature produceth all its actions and thoughts that are of choice and determination , from himself without any force or compulsion . For it is the nature of a Thinking Being , that consider'd in it self , it can do something , and determine it self to Act or not to Act. Now this determination proceeds either from the things themselves , without the Intellectual nature , or from the Intellectual nature it self . The Actions which have no other Principle , besides the Thing that Thinks , are called Volitions ; and the Intellectual nature as it is to be consider'd to be an Elective Faculty , and a sufficient Principle to produce such Actions , is called Will. Now , that such a will is to be found in Angels cannot be question'd , forasmuch as they are Thinking Substances , or Beings that of their own nature have a Power of Willing and Nilling . II. Two Doubts about the Will of Angels . Concerning the will of Angels it may be enquired , First , whether this Active Power in them be free , and without force , from any thing that is External : Secondly , whether the Angels have such a power over their Thoughts , that they can cease from all Perception and Judgment . III. The Will of Angels is free . As to the First it seems certain , that the Will of Angels is free , and cannot be forc'd by any Agent to do any thing , or leave it undone ; because the Nature of the Will consists in its being free , so that it implies a contradiction for it to be forced by any External Agent , since no Agent can destroy the Nature of another , which would then be , if the Will should will any thing with reluctancy . Besides , the original of this Freedom comes from hence , that it is the very Angel himself , that determines himself , and wills this thing or the other ; so that it depends on his own meer Will , that he freely Wills or Nills . Moreover , The Will , and Free Will , if well look'd into , are one and the same thing , and differ only in this , that the Will is understood to be the Chusing or Elective Power , by which a Cogitative Being doth determine it self , and perform all his Motions and Actions that proceed from the said Will : And by Free Will , we understand the same Faculty , forasmuch as it hath the Power of Chusing . Now since both these are found in the Angels , they must by consequence also have Free Will. IV. An Objection against the Liberty of Angels . If you Object , That the Angels do infallibly follow and embrace the Good they know ; and that therefore Divines say , That they Love GOD so , as not to be able to turn their Love from him : Because by Grace they are so united to God , that they cannot be separated from him , and are so satiated with the Divine Glory , that they cannot be drawn from the Enjoyment of so great a Good. V. The Objection Answer'd . I Answer , That notwithstanding all this , the Angels still continue Free , and Love God freely ; beeause the Essence of Liberty doth not consist in Indifferency , but in the free determination of the Will , by which an Angel , or the Mind of Man , is so carried towards that which is propounded to it by the Understanding , either in Affirming or Denying , Embracing or Avoiding , as not to be determin'd thereto by any outward force . For the Indifferency of the Will only then takes place , when there are no Reasons to sway the Mind one way more than the other ; which State is the lowest Degree of Liberty , and argues no Perfection in it , but only a Defect in its Knowledge . For who can deny , That Man doth nothing more voluntarily , than those things in which he finds not the least cause of Doubting ? Wherefore Des Cartes concludes in his 4 th Meditation , That Divine Grace , or Natural Inclination , do never diminish Man's Liberty , but rather increase and strengthen it ; and that a Man ought to be accounted so much the more Free , by how much the more he is byassed one way ; either because of his clear discerning of the Goodness and Truth that is in it , or because God so disposeth his Thoughts . Wherefore , when the Angels do inseparably adhere to God , and are link'd to him by stable Eternity , as Divines express it , they do not by this means lose their Liberty , but by Grace are inclined to one part ; and tho' indeed their Indifferency be diminished , yet their Liberty is rather increased , since to act Freely , and to act Voluntarily , are one and the same thing . VI. Liberty may be consider'd two ways . The Matter will be more evident , if we consider the Liberty of Voluntary Actions , either before , or in the same moment they are exerted : If the Actions of the Will be considered before they be exerted , there is no question , but that the Angels have power to determine themselves to one or the other Contrary , that is , to prosecute or avoid one and the same thing . Yea , according to some Divines , the Angels , whether Good or Evil , daily change their Wills. The latter , when they surcease their Temptations , finding that they are of advantage , rather than any hurt or hindrance to good Men. The former , when they forsake the Wicked , whom they find they cannot reclaim from their Impiety . But if we consider Liberty in Voluntary Actions the same Moment they are exerted , so it contains no Indifferency , in what sense soever it be taken ; whether for that State wherein the Will is not prompted to embrace one thing rather than the other , by any knowledge of the Truth , or Goodness of them ; or whether it be taken for that Positive Faculty of Intellectual Nature , whereby it can chuse , which it pleaseth of two Contraries . Because that which is a doing , cannot but be a doing at the same time it is a doing . And the Liberty which Angels have is such , as according to the increase of their Faculty of Acting , as was said before , is increased and strengthned . VII . The Angelical Will is not determin'd to one Action . As to the Second Doubt , VVhether the VVill of Angels be determin'd to elicit any Action ; or whether it can at its pleasure omit the same , and be void of all Thoughts ? I Answer , That the VVill of Angels is not ty'd to any certain Action , as being Indifferent of its own Nature , and not bound to any certain Knowledge , since they neither love themselves , nor God necessarily , as their Natural End. Yet they cannot at their pleasure rid themselves of all manner of Thoughts , as some think they may , because it is the Nature of a Spiritual Substance to Think always ; and therefore it implies a Contradiction , for an Intellectual Creature to be without all Thoughts , seeing we understand nothing else by the Name of Spirit , but a Thinking Being . VIII . An Angel Thinks , whilst he commands himself te cease from Thinking . If any one urge ▪ That an Angel may abstain from all Thoughts , by commanding his Understanding to leave Thinking . I Answer , That this very Command or Will not to Think , cannot be exerted by an Angel without his being conscious to it , and consequently without his Thinking . For to Nill is as much a Thought as to VVill ; wherefore Angels cannot cease from all Thoughts . CHAP. V. Concerning the Power of Angels , as to the moving and producing of Bodies . I. There is a Faculty in Angels , to move Bodies . BEsides the Operations of the Will , mention'd in the foregoing Chapter , there is another whereby a Spirit doth move a Body , and acts upon another Spirit like it self . For this Faculty is so intimate to a Spirit , that it cannot be conceived without it . We may indeed understand a Spiritual Substance , without the Power of Moving a Body , or of acting on another Spirit , in the same manner as we may understand a Spirit without the Faculty of Perceiving or Willing , which are two Modes of Thinking : But we cannot understand a Faculty of Moving it self , or from its own strength ▪ without a Thinking Substance . And therefore we rightly conclude , That the Faculty of Moving a Body , and Acting upon a Spirit , do belong to Intellectual Nature , and is one Mode of Thinking . II. The Point confirmed by Examples setch'd from Scripture . That this Power is in Angels , seems unquestionable ; forasmuch as Holy Scripture doth witness , that several Bodies have been translated from one place to another by the Help of Devils or Angels . Thus we find the Prophet was Transported from one place to another by an Angel ; the Body of Christ by the Devil , to the Pinnacle of the Temple ; the Stone remov'd from our Saviour's Sepulcher ; and other like Examples , which prove Angels to have the Power of Moving Bodies . III. How Angels move Bodies . There remains only one Difficulty to be explained ; How Angels , that are Immaterial , can move Bodies , seeing they impress no Quality upon them , neither do communicate ought to the Thing moved , as Bodies do . IV. Answer . I Answer , That Angels move Bodies by their Wills , neither is there any thing else required to it . For tho' God ( as shall be explained in our General Physiology ) be the Universal Principle of all Motion whatsoever ; yet this doth not exclude Particular Causes , that have a Power of Moving Bodies , according to that degree which God hath been pleased to impart with their Wills. And tho' it be difficult to comprehend how a Spirit doth act on a Body , and move it ; yet are we not therefore to make a Doubt of it , only because we are ignorant how it is done . V. We meet with the same Difficulty in our selves about Motion , which we find in Angels . Indeed , if we duly weigh the Thing , we experience the same thing in our Selves : We find that our Soul moves our Animal Spirits , and directs them into the Nerves and Muscles , meerly by the Inclination of the Will it hath to excite this or the other Motion in the Body : And we experience also , That the Motion of our Spirits , Muscles , and Nerves , is consequent upon this Propension of the Will ; and yet all this while our Soul doth not understand , how and after what manner our Soul , being an Immaterial thing , moves a Body ; and therefore neither is it any wonder , if we do not know the manner how Angels moves Bodies : In like manner neither do we understand , how from a certain Motion of the Spirits and Blood , the Affections of Hunger and Thirst are stirred up in us , tho' we plainly feel them of our selves . Wherefore we are certain that Angels , being Spirits , move Bodies by their VVill , tho' the manner how , be hid from us , as being one of those things our Understandings cannot reach . VI. Angels may Generate Bodies . Neither do Angels seem to be destitute of the Power to produce and generate some Bodies . For since Generation is performed by Motion , and that nothing else is required to Generation , but a fit and suitable adaption of Parts , according to the Constitution of every thing ; there is no sufficient Reason , why we should deny Angels such a Production . For in the Generation of a Plant or Animal , no new Substance is procreated , but only the Particles , whether Sensible or Insensible , acquire a new Connexion , and are otherwise disposed with relation to their Magnitude , Motion , Rest , Figure , and Scituation ; after the same manner as a House or VVatch , which are framed without the production of any New Substance , by the fit joyning of Parts before existing . And seeing Angels have the Power of moving , agitating , and reducing Bodies into order , neither can we deny them the Power of Generating them . Besides , Angels having great knowledge of Natural Things , by the study of their Virtues and Dispositions so many Thousand years , they cannot be ignorant at what times , in what places , with what Measure the Qualities of things are to be temper'd , and what will be the product of the Mixture of such and such Particles . Besides , we see Men , who are much inferiour to the Angels , produce divers things , which before were not extant , and which would never have been so without their Industry . Wherefore we must conclude , that Angels will be much more able to do so . Book ● . Part. 3. Chap 5. In Memoriam CAROLI S●cundi Angliae , Scotiae , Franciae , et Hiberniae Regis &c. G Freman I● I Kip S To the Worshipfull William Bridgeman of the Citty of Westminster Esq one of the Clarks of their Majestyes most ▪ Honourable Privy Councill &c. This Plate is humbly Dedicated by Richard Blome Book 1. Part. 3. Chap. 6. I. Ki● . S●●lp . To the Worshipfull Sr. William Holford of Welham in the County of Leicester Knight . descended from the Antient Family of the Holfords of Holford in Cheshire . This Plate is humbly Dedicated by Richard Blome VII . Magicians , by the help of Devils , produce Animals . This is prov'd , because Magicians , by the assistance of Devils , have produced some Animals , as Frogs , Serpents , Dragons , &c. So the Scriptures tell us that the Magicians of Egypt turn'd their Rods into Serpents , Exod. Chap. 7. Now that these were true Serpents appears hence , because the Scripture tells us , That the Serpent into which Aaron's Rod was turned , devoured the Serpents of the Magicians : For otherwise we must acknowledge , that Moses his Miracles were meer Impostures , and false Appearances . VIII . The Reason why Man cannot produce some Animals , proceeds from the unsuitableness of the Matter . If you say , That we cannot rightly argue from the Natural Perfection of Angels , that they have Power of producing Animals ; since we see that Men , who by many degrees excel Mice , Gnats , &c. yet cannot produce or generate them . I Answer , That this Impotence in Man , does not proceed from his Inability , but from the defect of Matter , proper for the procreating of such Animals . For every Body cannot be framed of every Matter , but of such only as Nature hath appointed for that purpose . For as a Stone-Cutter can do nothing without Sand and Stone , tho' he hath the Power of Squaring and Polishing them ; so seeing that Man is destitute of fit Matter for the Generating of Animals , it is no wonder that he cannot produce them . Neither doth it oppose this , that divers Plants , Fruits , and Flowers , do arise from the Seeds that Man casts into the Earth : For if a Man had the Seeds of Living Creatures , and committed them to places suitable to their Nature , he would produce proportionate Animals from those Seeds . We may conclude therefore , that Angels understanding the Virtues of Herbs , Juices , Metals , Animals , and Men , may take whatsoever is required to the Composition of Bodies , or Animals , and disposing the same in a fit place , produce or procreate them . IX . Angels cannot Create . But tho' Angels may produce Material Substances , yet can they not create them , nor Spiritual things . For it implies a Contradiction , that a Creature should produce any thing out of nothing ; Creation being an Operation to which nothing concurs , save only the Efficient Cause ; but if an Angel could create another , this Definition would not hold good ; because the produced Angel would either totally depend on the Producing Angel , or would own God also for his First Cause . If the first ; we must be forc'd to admit something Independent in the World , besides God , and so God would not be the First Cause . If the second ; since this Productive Power in the Angel would be subordinate to God , the Effect would not be attributable to him , but to the Primary Cause . X. How we are to understand that the Efficient Cause can produce its own like . You will say , That a Perfect Efficient can produce its own like ; as Fire can produce Fire , a Lion generate a Lion ; and that therefore an Angel being more perfect than any Material Thing , can produce another Angel ; not indeed by Generation , because an Angel is a Simple Being , not consisting of Parts , but by Creation . XI . Answer . I Answer , That this Maxim of ARISTOTLE has no place in Thinking things , but only in Material , which are subject to Corruption , whose Property it is to preserve their Species , by the multiplication of Individuals : Whereas Angels , being exempt from Corruption and Materiality , have no need to preserve their Species by Propagation . CHAP. VI. Of the Number , Distinction , and Subordinanation of Angels . I. The Number of Angels is very Great . 'T Is certain from Holy Writ , that there are vast multitudes of Angels , which tho' they be ●ometimes express'd by a certain number , Dan. 7. 10. Thousands of Thousands ministred unto him , and ten Thousand hundred Thousands assisted him . Revel . 5. 11. And the Number of them was , Thousands of Thousands ; yet they cannot be reduc'd to any determinate Number . For since Great or Little are only Comparative Terms , and no Number can be called the greatest , but in comparison with a lesser ; the Multitudes of the Angels must be compared with some other Multitude , that by the Excess of either we may find out which is the greater . II. According to some , the number of Angels far exceeds the number of Mon. Hence some are of Opinion , That the number of Angels is very great , if compar'd with the number of Men , that are , have been , or shall be ; since it is not probable that God hath left such vast and magnificent Spaces without Inhabitants , except only the Empyreal Heaven : And because it seems probable to them , that the more Perfect Beings should exceed the less Perfect and Ignoble , in bulk or quantity , if they be Extended ; and in Number , if Spiritual . III. But without any cogent Reason . This Argument would indeed conclude something , in case the Angels were Extended Beings , and took up place ; but being Intellectual and devoid of Matter , they cannot fill any Space . Nor is the Reason that supports this Argument of any strength : For if it were generally true , that things more Perfect must exceed the less Perfect in Number , I know no reason , but that upon the same account it might be concluded , that there must be more Gods than one ; more Suns than Planets ; more Pearls and Precious Stones , than Common Stones ; the first of which is contrary to Faith , the second to Reason , and the third to Experience . IV. The Opinion of the Talmudists . concerning the Number of Angels . The TALMUDISTS reduce the Angels to certain Numbers , dirstributing them into several Companies or Bodies , and assigning to every one of them a set number ( as it were ) of Inferiours , as Subjects or Soldiers . For according to R. F. Georgi the Venetian , of the Order of St. Francis , the Talmudists distribute the Armies of the Angels into Mazaloth , El , Legion , Rihaton , Chirton , and Gistera . Mazaloth they say are Twelve , according to the XII Signs of the Zodiack . El are thirty Bands or Regiments , for every one of those Twelve ; and accordingly there are 360 Bands of Angels . Legion multiplies this Number of 360 by 30 ; whence doth arise the Number 10800. And this Number they multiply again by Thirty ; which makes up Rihaton , consisting of Three Hundred and Twenty five Thousand ; which multipyed by Thirty , makes Chirton , consisting of Nine Millions , Seven Hundred and twenty Thousand . Which they multiply again by Thirty ; the Product whereof is Gistera , consisting of Two Hundred and Ninety one Million , and Six Hundred Thousand . The Sum Total of them all being , Three Hundred and One Million , Six Hundred Fifty five Thousand , One Hundred Seventy two , as appears in the subjoyned Table ▪ 12 12 Mazaloth . 30 360 El. 360 10800 Legion . 30 324000 Rihaton . 10800 9720000 Chirton . 30 291600000 Gistera . 324000 301655172 Banns or Regiments of Angels in all , 30   9720000   30   291600000.   Whether the Talmudists have truly assign'd this number of the Angels , cannot be decided by any evident reason : Wherefore we may conclude with St. Gregory on the 26. of Job , Humane Reason cannot assign the Number of the Superiour Spirits : because it doth not know the Multitudes of those Invisible Beings . And a little after , The Number of the Spirits or Citizens above can only be counted by God , but are Innumerable , as to Men. V. All the Angels are not of a different Species from each other , As to the Difference of Intelligences , the THOMISTS are of Opinion that all of them differ Specifically , and that Intellectual nature is their Genus . Their Reason is , because they make Matter the Principle of Numerical Distinction , and therefore suppose that all Immaterial Things must differ Specifically . But this is a mistake , forasmuch as Numerical Distinction doth not arise from matter , but from the Essence it self of every thing whereby it is Distinguisht from others . According to this Axiom , Form gives the Being to a thing , or Essence is that whereby a thing is principally known and differenc'd from others . SCOTVS therefore calls singular Essence Haecceity . For who will say that two Modes in the same Body , or two Perceptions in the Soul , differ specifically only because they are without Matter ? Besides , two Humane Souls are immaterial , their notion involving nothing besides Cogitation ; and yet no Body ever asserted their Specifical Distinction : And why may not Angels as well differ only Numerically under the same Species , forasmuch as no Diversity is found in their Nature , which consists in Cogitation , nor any so great Distinction with Relation to their several Offices ? For most of them have like Offices , and a common Operation . And therefore it is not to be question'd but that many of the Angels are of one Species and differ only Numerically . VI. Nothing hinders but that there may be many Species of Angels . Yet for all this , there may be many Species , for ought we know amongst the vast number of Angels , especially amongst those who are of a Different Order and Hierarchy . And this we shall be easily persuaded of by considering the several Quires of Angels , which seem to differ , as in their Dignity and Offices , so in their Essence also . For these Functions being proportioned to their several Natures , prove their different condition . Moreover , as the Beauty of this visible World , consists much in the Different Species of Bodily Things ; so likewise we may with more reason conclude that the Invisible World is adorned and Beautified with the Diversity of Spiritual Natures . Tho' indeed this is a matter we cannot absolutely determine , whether the Angels differ Specifically , or only Numerically , and therefore must say with Damascenus , That he only knows this who hath Created them . VII . The Immense multitude of Angels is distributed into three Hierarcbies . There is without Question an Order and Subordination amongst the Angels , which some call a HIERARCHY : This is a Greek Word and signifies a Sacred Rule or Principality ; or a company of Sacred Princes , who with some Subordination constitute one Body . This Hierarchy is commonly said to be twofold , Ecclesiastical , or Heavenly ; the Ecclesiastical consists of Prelats , Priests and Ministers of the Church ; but the Heavenly Hierarchy , is the whole Multitude of Angels , which is divided into three Hierarchies , viz. the superior , which by FLUD in his Philosophy , is called EPIPHANIA , to which belong the Seraphims , Cherubins and Thrones ; the middle-most , or as he will have it , EPIPHONOMIA , which contains Dominations , Virtues and Powers ; and the Lowest or EPHIONIA , which consists of Principalities , Archangels and Angels ; to all which he assigns several Offices . The First of these , because of their most pure Essence , he places before God , as his Assisting Ministers : The second he makes to preside over the Celestial Spheres , and to have the Dispensing of their Influences to the inferiour World : The Third he makes the Superintendents over Sublunary things , as being Spiritual Creatures diffus'd through Bodies , and Destinated to the Quickening and Moving of them , and are therefore call'd Ministring Spirits . VIII . The Three Hierarchies explained . But because our forementioned Doctor writes very Enigmatically , so as to stand in need of an Interpreter rather than a Reader , I shall endeavour to give a short Explication of every one of these Hierarchies . The First , Hierarchy therefore is so called from the Relation they have to God , as being , as it were , his Grandees and Honourable Prime Ministers and Officers , who being nearer to God , receive his Commands from his Mouth and impart them to Inferiors . They who are the highest in this Hierarchy are called Seraphims , that is , Burning or Flaming , from the fervour of Divine Love Burning in them ; being most pure themselves , and greatly purifying others , and wholly aspiring to things that are on high . The Middle Order is that of Cherubims , so called from that Transcendent knowledg of all Divine Mysteries . The Lowest is that of Thrones , who as so many immovable Seats receive the Rayes of Divine Glory , and without any motion of their own , abandon themselves wholly to God. IX . The Offices of Angels of the Second Hierarchy . Dominions , who are the first Order of the second Hierarchy , preside over those things that are to be done by Inferiour Natures , and by disposing and ordering of them , bear sway in the Government of Humane Affairs . Virtues execute with a masculine and unshaken Fortitude whatsoever they are charg'd with , as Dionysius expresseth it , Hierarch . cap. 18. Being always ready and prepared to perform the Divine will , Those that are call'd Powers , resist Devils , and restrain their power , from setting upon Men , and from Tempting them beyond their strength . X. The Properties of the Third Hierarchy . The Third Hierarchy also hath its particular Properties . Principalities are destinated to have the superintendence over Princes and Prelats : Archangels over Kingdoms , People and Provinces ; and Lastly , Angels have the care of particular Persons , and are as it were Ministers and Messengers between God and Men. Whence it appears that there are Nine Quires or Orders of Angels ; Seraphim , Cherubim , Thrones , Dominions , Vertues , Powers , Principalities , Archangels and Angels . The Talmudists also agree in the same Number , tho they call the several Orders by other names . CHAP. VII . Whether Angels be in a Place . I. What Place is , and how many fold . BEfore we resolve this Question it will be necessary to Enquire what Place is , and how a thing is said to be somewhere . Place is commonly taken for that space in which things are ; and it is twofold , either Internal , which is nothing but the space it self that every Body occupies , and which does not differ from its Extension , but by our manner of conceiving it , in that Extension in a space or place is consider'd in general , and as common to the Air , a Stone , a Book , &c. whereas in Bodies , that are said to be in Space , Extension is only consider'd Individually , and as Inseparable from them . Therefore as a Body consider'd in General consists of three Dimensions ; so place is a Space Extended , according to the foresaid Dimensions ; so that wheresoever there is a Body there must also of necessity be a Space or Place . External Place is the same with Internal Place , save only in that it denotes over and above the Situation and Order it keeps amongst other Bodies ; and is properly nothing else but the surface of a Body , that surrounds another Body , and which with respect to the Body it surrounds , is no more than a Mode , since it cannot be understood without the Conception of a Body . II. Angels are not in a Place . These things being premis'd , I answer to the Question , that Angels and all Spiritual Substances have no place , neither Internal nor External . Because to be in a Place is the Affection of a Body , and therefore Angels being Incorporeal , and without any Extension , they cannot take up any place ; and if they fill no Space , what Situation or Order can they have as to other Bodies ? Wherefore Spiritual things can no more be said to be in a place , than they can be said to be of such a Colour , Taste or Smell , which denote Bodily Modes . So that to say that a Thinking Substance can become mensurate to a Space , is the same as if one should assert it to be material . III. How we are to Understand that common saying , that Every thing that is , is somewhere . You will say , if Angels be not contained in any place , then they must be nowhere , which is contrary to that Axiom of Philosophy , that Whatsoever is , is somewhere ; and that whatsoever is nowhere doth not exist at all : But Angels do exist , therefore they must be in some place . IV. Answer . I answer , if by Nowhere you understand no Space Measurable by Longitude , Latitude , and Profundity , it may be admitted that Intelligences in this sense are nowhere , as being devoid of all Dimensions . But if by nowhere you mean , that Immaterial Beings do not exist at all , this cannot be admitted , forasmuch as in this sense they are somewhere , that is , they do exist . For it is not necessary that every thing that exists should be comprehended in some Space , this being only proper to Extended Beings or Bodies . Yea , even the whole Universe , containing the Infinite Expansion of all things , is not comprehended in any Place , but is every where , that is , we can imagin nothing that doth enclose and surround it . And therefore the Category Ubt is only Attributable to the particular Bodies of which the Universe doth consist , not to the Universe it self . V. Angels being without Extension , cannot be said to be in a Place . Forasmuch therefore , as the Angels are destitute of all Extension , and do not concur as Parts to the Construction of the Visible World , as particular Bodies do , therefore neither can they be said to be somewhere , that is , to take up some Place . For we are to avoid the perverse Custom of Common Philosophers , who apprehend all things after a Bodily manner ; by Attributing some kind of Extension unto them . And yet nothing appears more clearly to our Mind , than that Cogitation , which Constitutes the Nature of an Intellectual Be ing , is devoid of all Extension , and hath no commerce at all with Matter . Forasmuch therefore as Space in its Conception Involves Extension , it is evident that it cannot be Attributed to Spirits . VI. How Angels can be said not to be somewhere , seeing they are Finite . If you urge further , that Angels are limited Beings , which cannot be present to all places ; and that which is not every where , is comprehended in some Space , and answers to the Determinate part of the Divine Immensity ; and that therefore the Angels are in some certain place . VII . Answer . I answer , that this Argument is true in one Sense , and false in another . It is true as to the First Part , that Angels are Finite Beings , as to their Essence and Operation , seeing that they are Creatures , that depend on their Creator both as to their Conservation and Production . Yet can they not be said to be finite as to Quantity , because they are devoid of all Extension , and in that regard are neither Finite nor Infinite , and neither take up all places , nor are shut up in one certain place , forasmuch as to be Extended , and to be in a place , are one and the same thing . VIII . How the Angels are contained in the Divine Immensity . It is true also , as to the Second Part , that the Angels , as all other Creatures , are contained in Gods Immensity ; because his Immensity is nothing else , but his Omnipotence , by which he is present to all his Creatures , Producing and Preserving them , as has been explain'd at large in the foregoing part . So that this Omnipresence in God is nothing else but an Extrinsecal Denomination springing from Gods Operation , which he works in all Created Things . But it is false that the Angels answer to any part of the Divine Immensity , if the Divine Immensity be conceived under the notion of Infinite Extension , including an Infinite Quantity of real or Virtual Parts : for seeing God is most Simple and free from all manner of Extension , he cannot be Coextended to the many Parts of the World , nor fill any real or Imaginary Spaces . IX . The Angels are said to be somewhere by their Operation only . Forasmuch therefore as Angels do take up no places , and cannot be said with respect to their Substance to be Here , There , or Every Where ; it remains that their presence is only determinable by their Operations . And this seems to follow from the Nature of an Intellectual Creature . For seeing that the Angels are Active Beings , and that the life of Active Existency consists in Operation , we can only say that they are there , where they Operate , viz. in a Body , or about a Body . For since things are said to be somewhere according to their own Proper Nature , Matter being an Unactive Lumpish thing , is Passively Constituted in a Place according to its Length , Breadth , and Depth : whereas a Spirit is said to be somewhat Actively , viz. by that force and Efficacy , whereby it governs and moves the Body , and carries it from one Place to another ; and so is said to be present to that Body in which , and about which it immediately works . X. The Soul by its Operation is present to the Body . Accordingly in the Fifth Part of this Institution it will be declar'd that the Soul of Man is peculiarly present to the Conarion or Glandula Pinealis , Situate in the midst of the Brain ; forasmuch as it Operates , and immediately exerts its Powers in the same . In like manner the Divine Immensity is deduced from his Operation about this World , so that before this Operation he could not be stiled Immense , no more than he could be called Creator , before ever he had Created any thing : Forasmuch as , according to what hath been said before , Immensity denotes only a respect between Created Things , and Gods Operation about them . And upon this account it is that when we pray to God , we assign his proper place in Heaven , because he there exerts his most wonderful Operations , and more Efficaciously manifests his Power . CHAP. VIII . How Speech is attributable to Angels ? I. Speech is twofold . NOtwithstanding that Angels are simple Beings , and do not consist of Soul and Body ; yet most Metaphysicians Attribute Speech to them , whereby they are capable of conversing with one another . For that is not only call'd Speech , which is performed by the outward Organs of the Body , but also that inward speaking of the Mind , whereby it thinks or perceives ; according to that Expression of the XIV . Psalm . The Fool hath said in his Heart , &c. and suitable to that way of speaking we so frequently use , when we say to others What saith your Heart to this or that ? And of this manner of Speech Divines are to be understood , when they enquire whether Angels Speak , and make known their Conceptions to one another . II. 'T is not necessary that Angels should speak to one another . This Question may be resolv'd from the Third Chapter ; for seeing that Angels penetrate each others Thoughts , and Voluntary Determinations , they do not seem to need Speech , because this is only requisit for Communication , and mutual Society . For there are four things required to Speech . First , that it be free , according to the will of the Speaker . Secondly , That it be discovered only according to his intent and likeing ; so as to reveal secrets to those to whom it is directed , and conceal them from others tho' present . Thirdly , that the Speaker be able to excite him whom he is about to speak to , tho' he may be busied about other thoughts . Fourthly , That he that hears may know from whom the Speech procceds . III. Angels cannot speak according to these Conditions of Speech . But how shall the Speech of Angels be Free ▪ when their thoughts are always open to others ? and seeing it is not in their Power to conceal their thoughts from others ? How will they be able to chuse their Auditors , so as not to open their Secrets , but to whom they please , since it is not in their Power to hide them , and that their Perceptions are as Natural as their Substance ? Moreover how will they be able to excite their Auditors to the understanding of what they have to say , since they have nothing new to manifest to them ? Lastly , how shall the Auditor know him that speaks to him , and Distinguish him from others , if he be not call'd upon , and if from his knowledg nothing accrue to him ? Wherefore we must conclud● that Angels do not discourse together after the manner of Men ; but that they so understand each others Conceptions , as that nothing is hid from them . Whence Divines tell us that the Language of Angels is their Understanding . IV. Some Scriptures explained which attribute Speech 〈◊〉 Angels . Neither is it any contradiction to this , what the Scripture mentions of the Discourse and Speech of Angels , as that of the 7th of the Revelation , where an Angel is said to call with a loud Voice to the four Angels ; and in the 6th of Isaiah t is said that the Seraphims cried one to the other and said , &c. And the Apostle saith in the 13 Chapter of the first Epistle to the Corinthians , If I speak with the Tongues of Men and Angels , &c. because the Speeches here spoken of are Visionary and only seem'd to be utter'd by the Angels . For Spirit ▪ do not discourse together by an outward Voice formed in the Air ; neither do they discover their thoughts as we do by any outward Organs . Therefore these Speeches were seemingly heard by the Prophets , for their Illumination , and that Posterity Reading their Writings , might be acquainted with those Mysteries , and be assur'd of them by their Testimony . As to that Expression of the Apostle , who Attributes Tongues to Angels , this must not be understood of those Internal Speeches which Angels use amongst themselves ; but of those which Angels in former times used amongst Men , to manifest their Conceptions unto them , which tho' they were known and understood by Believers , yet served only to strike Unbelievers with Wonder , and Astonishment . And that this is the Genuine Sense of the Apostle in this place , appears from the Words immediately following , and have not Charity , I am become as sounding Brass , or a Tinkling Cymbal ; which is only applicable to outward Speeches , that is , to Sounds and Voices utter'd by Bodily Organs , which we know cannot be fram'd by Angels . V. The Manner how the Angels speak is inexplicable . Neither indeed can it be shewed , how Angels Speak or Discourse , since it may be question'd whether the signs wherewith they express their Thoughts be Spiritual or Corporeal . And again , whether those Signs be Natural , or Voluntary . Whether all Angels make use of the same Signs , or every one of them have Signs peculiar to themselves . How it comes to pass , that when one Angel speaks , all the rest ( without any difference ) do not hear his Speech ? By what Artifice their Communication may be hindred ? Whether against their Will they perceive the Speeches of others ; or whether their Consent be required to the perception of them ? Whether Angels can reveal their Thoughts to some , and hide them from and impose them upon others ? Which things , and many other such like , cannot be attributed to these Heavenly Spirits , and therefore prove their Conversation to be different from ours . VI. Superior Angels inform the Inferiour of things unknown to them . It remains therefore , if Speech be attributable to Angels , that the same only belongs to Superiour Angels , with respect to such as are Inferiour : For seeing that Speech is the manifestation of something unknown , if any New thing be discovered to them , it must proceed from the Superiour Angels . Wherefore Divines admit Illumination , which is a kind of Speech , to be amongst Angels , whereby they reveal unknown Truths , received from God to one another . And accordingly DAMASCENUS tells us in his Second Book of Faith , Chap. 3. It is evident that all the superiour and higher Angels , do impart their Light and Knowledge to the Inferiour . So that a more excellent Angel is as a Light to those that are under him , to illuminate them , and communicate new Knowledge to them . VII . Sometimes this Order is changed . But tho' this manner of Illumination be the most ordinary and best agreeing with the Angelical Orders ; yet it is not necessary that it should always be after the same way : For without doubt God may manifest a Mystery to some Inferiour Angel , which by him may afterwards be communicated to the Superiour ; and accordingly some think it probable , that God communicated his purpose of being Incarnate , only to the Archangel GABRIEL , who was to carry the Message of it to the Blessed Virgin ; notwithstanding that ●e belonged to the Inferiour Hierarchy . But according to the ordinary course , the Superiour Angels Speak , and the Inferiour Hear and Listen ; the former , as DIONYSIUS tells us , being the Guides and Teachers of the latter . CHAP. IX . How Angels assume Bodies , and what Actions they exert in them . I. Apparitions of Angels bave been very frequent . IT cannot be question'd , but that Angels and Devils do really appear , and take up Bodies to make themselves Visible ; this being a thing abundantly confirm'd by Profane and Sacred History . Thus the Devil , in the appearance of a Serpent , Tempted Eve , Gen. 3. Three Angels appeared to Abraham , Gen. 18. Two Angels came to Sodom , Gen. 19. The Angel Gabriel appeared to the Blessed Virgin , and brought her the Message of the Divine Incarnation . Neither can these Apparitions be ascribed to the Power of Imagination , or some Melancholy Humour , forasmuch as these Bodies can be felt , and manifest themselves by Corporeal qualities . Seeing therefore we cannot doubt of the Truth of these Bodies , it remains only to enquire , what kind of Bodies are fit for this use , and what Actions Angels exert in them . II. What kind of Bodies Angels do assume . As to the first of these Enquiries , it seems probable that the Angels chiefly assume Aery Bodies , which they form by their own Power , and adapt them to their Intention ; so as that from the Different Disposition of the Parts , Variety of Colours do arise , and the Figure of a Man or Beast be represented to the Beholder . For these Bodies having real Extension , and being variously terminated , may according to the various Reflexion or Refraction of Light appear of another Figure , Situation and Bulk , than indeed they are . In this manner , the Devil , according to the Relation of William of Paris in his last part of the Universe , deluded a Souldier , by assuming the Dead Carkase of a Beast , who supposing himself to have enjoyed a Beautiful Young Woman , found himself , in the embraces of a loathsome rotten Carrion : Which sort of Delusions are peculiar to Devils , who Understanding the Nature of Bodies , and being skill'd in Perspectives , can so order the matter , as to make things appear quite otherwise than they are . III. Angels can appear without Bodies . Tho' this be the receiv'd Opinion amongst Divines , that Angels and Devils can assume true Bodies in order to their appearing to Men ; yet I do not see but that they may visibly shew themselves without the taking up of Bodies . For seeing Bodily things , as MAGNANUS tells us in his Philosophy of Nature Cap. 33. have no other Power of Acting , than that of moving or resisting Local Motion , it will follow , that they appear to our Senses either by the Motions they impress upon them , or by their resisting of other Motions . Wherefore since we understand that a Spirit can exert all those Motions on our Senses which any Bodily Substance can , and likewise resist other Motion as well as any Body whatsoever ; we may likewise conceive how a Spirit may be perceived by our Senses under the Corporeal Form of that Body , whose Manner and Measure of Motion , or Resistance of Motion , he shall purpose to imitate . Wherefore an Angel in Order to his appearing will not need to make himself a Body of such a Colour , Figure and other Qualities , as he intends to appear with ; but it will be sufficient , if he only Refract and Reflect the Light in such a Manner and Measure , as that Body would , in whose shape he desires to appear . IV. How an Angel can make , a sound to be heard . In like Manner when an Angel has a mind to make himself heard , it will be sufficient , if he only so beat and agitate the Air , as that Sounding Body would do whose Sound or Voice he designs to imitate . For by this means the Agitated Air , will communicate the Motion it hath receiv'd from the Spirit to the Drum of the Ear ; and consequently will perceive a Sound like to that which the Body would have caused . And by this means an Angel or Soul may at pleasure appear to one Person , and hide himself from another , which would be impossible for them to do , after having assum'd an Aerial Body ; because such a Body would indifferently appear to all . V. Supposing Angels to assume Bodies , what they do with them , and work in them . But forasmuch as both Angels and Devils do sometimes assume true Bodies , as hath been shewn from Holy Scripture , we are next to enquire how they are present to these Bodies , and what they Work in them . VI. Angels are not so intimately joyn'd to the Bodies they assume , as Souls are to their Bodies ▪ Angels are not in Bodies after the same Manner as Souls are , so as that the Motions of the assumed Body and Spirits should follow the Voluntary Determinations of the Angels , and that the Angels also should be affected by the Bodies assumed . For herein doth the Union of Spiritual and Bodily Things consist , as shall be shewed in the ninth part of this Institution . Because it is one thing for a Spirit to be present to a Material thing , and another to be united to the same : Whenever a Spirit is joyned to a thing , he is also present with it ; but not on the contrary ; for a Spirit may be present with a thing and yet not be united to it . Now that conjunction which is between an Angel and his assumed Body , is not much unlike that , whereby the Master of a Ship is present to his Vessel , a Coach-man to his Coach , and a Rider to his Horse . For as the Master of a Ship may leave it , and return to it again at his pleasure ; so the Angels may when they please quit their assumed Bodies , and remove into others ; which they could not do , in case they were substantially united to them , as Souls are to the Bodies they animate . And as many Pilots may be in the same Ship , so more Angels or Devils than one may be in the same Body ▪ as appears from the Gospel ; but many Souls cannot be joyned to the same Body . The Soul is frequently against its Will united to a Body , and cannot at pleasure be separated from it , whereas an Angel is never unwillingly join'd with the Body it assumes . We conclude therefore that Angels are only accidentally , and as assisting Forms join'd to the Bodies they assume . VII . Angels exert no Vital Actions in Bodies . From what hath been said , it is evident what Angels can perform in the Bodies they take up , and what Actions they exert in them ; for it is manifest that they can produce no Vital Operations in them ; for tho' they be willing to Eat or Drink , yet are they never troubled with Hunger or Thirst ; and tho' they really Eat and Drink , yet have they no Sense of it ; and the like may be said of other Corporeal pleasures , which no more affect the Minds of Angels , than that of Eating or Drinking . For all these suppose the union of a Spirit with a Body ; and do not so much belong to the Mind as to the Body . For he who resolves for the Love of God to abstain from Eating , hath no will to Eat , because he is otherwise determin'd ; and yet frequently feels the gnawing of his Stomach , and dryness of his Throat , and a natural desire to Eat and Drink . And in like Manner Venereal pleasure belongs to the Animal and sensitive life we have here , but not to the life we shall enjoy hereafter : for in the Resurrection , as the Scripture saith , Mankind shall be like the Angels , in Heaven and neither Marry , nor be given in Marriage . Matth. 22. 30. VIII . Devils cannot generate . Whence it appears , that it is altogether irrational what some assert , that MERLIN was begot by a Spirit ; that the People called HUNNI were begotten by Satyres on the Bodies of Gothick Witches ; or that CORCOTON a Daemon in Hispaniola , was us'd to beget on the Bodies of Women , Births in the shape of Men with Horns on their Heads . These and such like Stories I take to be meer Fables : For seeing that Devils are immaterial , they can neither yield any Matter fit for that purpose of themselves , nor take it from any other Body , forasmuch as it is a part of the Living Body , and the remainder of the best concocted Aliment . CHAP. X. Whether there be any Order amongst the Devils ; and what kind of Order that is . I. Since Angels have different Offices , there must be some order amongst them . FOrasmuch as the Devils are deputed to different Works , and according to TRITHEMIUS his Opinion , are sent abroad into divers parts of the World , they must of necessity observe some Order , and somewhat imitate the Government that is amongst the Angels of Light. For seeing they perform various Offices , and inhabit the Fire , Air , and Earth , as also the Waters and Bowels of the Earth , and that in perpetual Darkness ; it does not appear how they could be kept to their several Tasks and Duties , if there were not some dependence between them , and if they did not derive their Power from one Head. Wherefore , LUCIFER in Holy Writ is called the Devil , because he is the Prince of all the Devils : And accordingly when the Pharisees told our Saviour that he cast out Devils by Beelzebub the Prince of Devils ; he replies : If Satan be divided against himself how shall his Kingdom stand ? By which Words Christ himself supposeth that there is a Primacy , and consequently a Government amongst Devils . II. The Power that Angels have , is not proportion'd to their Perfection . The only difficulty here is to explain wherein the mutual subjection of the Devils is founded . Some fix it in the different Perfection of Devils , as supposing them to be endued with Power , according to the Proportion of their Dignity . But this seems to be said without sufficient ground ; for there seems to be no Connexion between Natural Perfection , and Command or Moral Praeeminence , except that the one should necessarily follow from the other ; or that one should be the Rule of Manners ; neither of which can have place in the Devils ; for otherwise an Inferiour Angel would have as many Commanders and Rulers , as there are Angels more perfect than himself , which would be a most miserable State of Slavery , and Incomparably worse than any other . III. The Commonwealth of Devils is establisht by their mutual consent . It seems more Rational to conclude that the Form of their Commonwealth , hath proceeded from themselves , and been established by their mutual consent . For tho' the Devils be exceeding Proud , and each of them hath Ambition enough to aspire to be Governour in chief ; yet because they are full of hatred against God and the Envy they bear to Mankind , they suppose they can take no better way to Rob God of his Honour and to destroy the Souls of Men , than by mutually agreeing to submit themselves to a Government setled by Laws . Wherefore the Devils chose Lucifer the first Author of the Rebellion , to be their Prince , as Robbers us'd to do , who having join'd themselves together , choose one from amongst themselves to be their Captain . IV. The Devils are divided into Nine Orders , like the Angels . But what kind of Government the Devils have amongst themselves , is not easily Determinable , except we assent to them who divide the Devils into three Hierarchies and nine Quires , like the Angels . For so CORNELIUS AGRIPPA in his third Book of Occult Philosophy tells us , that there are Divines , who distribute the Devils into Nine Ranks , as standing in Opposition to the Nine Angelical Orders . Whose Opinion he follows and ranks them so himself . V. The First Order of Devils . The First Order of Devils according to Agrippa , are the PSEUDOTHEI , or False Gods , who Usurping the name of God , presume to be worshipt like God , and to have Sacrifices , and Adorations made to them ; like that Devil , who said to Christ , All these things will I give thee , if thou wilt fall down and Worship me , shewing him all the Kingdoms of the Earth . And the Prince of these is he who said , I will ascend above the height of the Clouds , and will be like the most High ; and who is therefore called Beelzebub , that is , the old God. VI. The Second Order . The Second Order are the Lying Spirits , such as he was that entred the Prophets of Ahab , and was a Lying Spirit in their Mouths . And the Prince of these is the Serpant PYTHON , from whence Apollo is called Pythius , and that Woman Pythonissa , 1 Sam. 28. as also that Other in the Acts of the Apostles , Chap. 16. This sort of Devils make it their business to delude Men by Ambiguous or false Oracles , Divinations , and Predictions . Book . 1. Part. 3. Chap. 1● G. Freman Inv. To William Edgell of Clapton in the Parish of Hackney in the County of Midelesex Gentleman . This Plate is humbly Dedicated by Rich : Blome Book . 1. Part. 3. Chap. 10 ▪ G. Freman Inv. I. Kip Sc To William Benge of Cosely Woodin Wadherst in the County of Sussex Gentleman This Plate is humbly Dedicated by Rich : Blome . VIII . The Fourth Order . Those of the Fourth Order are called Avengers of Wickedness , whose Prince is ASMODEUS , the Executioner of Justice . IX . The Fifth Order . The Devils next to these are Juglers , so called , because they imitate Miracles , and assist Magicians and Witches , seducing the People by their seeming Miracles , as the Serpent seduced Eve. And their Prince is SATAN , of whom it is written in the Revelation , that he deceives the whole world , working great Miracles , and causing Fire to come down from Heaven in the sight of Men , and deceiving the Inhabitants of the Earth , by the wonders he doth . X. The Sixth Order . The Sixth Order are those that are called the Powers of the Air ; these are very busie in Thunder and Lightning ; they corrupt the Air , and cause the Plague ; and of this Number were those , of whom the Revelation mentions , that it was given to them to hurt the Earth and the Sea. And their Prince is MERIZIM . This is the Noon-Devil , the Burning Spirit , and the Devil that rageth at Noon ; whom St. Paul in his Fpistle to the Ephesians calls The Prince of the Powers of the Air , the Spirit that Works in the Children of Disobedience . XI . The Seventh Order . The Seventh Rank or Order is that of Furies , the sowers of mischief and Dissension , of Wars and Devastations ; whose Prince in the Revelation is called APOLLYON , and in Hebrew Abaddon , that is , the Destroyer . XII . The Eighth Order . In the eighth Order are Accusers , whose Prince is called ASTAROTH , that is , a Spie ; and in Greek Diabolus , that is to say a Slanderer ; who in the Revelation is called the Accuser of the Brethren , who accuseth them before the Face of God , day and night . XIII . The Ninth Order . The last Order of Devils are those that are called Tempters , or Lyers in wait , who do accompany Men continually to tempt them to Evil , and are therefore called Bad Angels . Their Prince is MAMMON , that is , Lust or Concupiscense . XIV . This Ordination of the Devils is not to be respected . And tho' this Ordination of the Devils be no where else to be found but in Agrippa , yet is it not therefore to be the less esteemed , seeing that it imitates the Orders of the Good Angels , and is derived and descends from Lucifer the Prince of the Apostate Spirits : So that as God hath his Angels , so Lucifer hath his Devils . CHAP. XI . Of the Care of Angels about Mankind , and the things here below . I. There is a twofold care of Angels . IT is manifest that God makes use of the Ministry of Angels , in the Ordering of things below ; and there seems to be a twofold care in them ; the one General , whereby they are concernd for the whole World ; the other particular , whereby they watch over particular Men. Wherefore NAZIANZEN in his 6 th . Poem writes thus concerning them . Some with most Awful looks surround the Throne , Ready and Girt t' obey the Holy one : Others support the World , and lend their Aid To all the Several Creatures God hath made . Their Care is diverse , as are Gods Commands , These govern Men , and Those Cities and Lands . II. The Opinion of the Ancients concerning the Guardianship of Angels . Accordingly the Ancients tell us of Universal Angels , every one of which did preside over a whole Nation , and were called the Angels or Genius of such or such a Nation : And of Particular Angels that are singly appointed to take care of this or the other particular Person , and are more particularly called Genii , because they superintend the Generation of particular Persons , and as soon as they are born do inseparably assist them . Such an Angel as this is called by Epictetus a Keeper , Particular Overseer , a Domestick Spie , a Proper Curator , an intimate Cognitor , a Continual Observator , an Individual Arbiter , an Inseparable Witness , a Reprover of Vice , and an Approver of Virtue . O ye Men ( saith he in Arrian ) take it for granted , that every one of us is committed to the care of a certain deligent and worthy Keeper : Whensoever therefore you shall have shut your Doors upon you , and shut out the Light from you , take heeed you do not conceit your selves to be alone ; for most certain it is you are not so ; for God is with you ; and so likewise is your good Angel. III. The same confirm'd by Christians . What the Ancients called Genii , the same the Christians call Angels , and do own both their General and special Guardianship . For all Christians hold it for an undoubted Truth , that they have Angels deputed by God to be their Keepers and Companions , to inspect their Actions , to divert Mischief from them , and to take care for their Future Bliss and Happiness . For thus much may be deduced from the Offices of Angels , who , as the Apostle tells us , are Ministring Spirits , whose duty chiefly it is to put by the Devils Snares , to exercise Mens Minds to Virtue , to raise up such as are fallen , to suggest good advice , and to present their Prayers and Wishes to Almighty God. Indeed for this very cause they are called Angels , as being a kind of Messengers betwixt God and Men , whom they are to direct as School ▪ masters and Pastors . IV. The Angelical care is deducible from the Providence of God. In this Angelical superintendency , the Providence of God most clearly appears , forasmuch as he governs and rules these things here below , by Superiour Powers , and Administers changeable things , by such as are Spiritual and unchangeable . For as by the Prudence and Forecast of a Good Emperour ( saith Chrysostom ) all Cities , Towns and Castles , are furnisht with sufficient Garrisons against any Hostile Invasion , and all places so provided with Arms , that they may not stand in fear to be laid waste by a Barbarous Incursion : In like manner God , because the Devils with Barbarous and cruel minds are always hovering about us to overthrow our peace and happiness , appoints for our Safeguard the Hosts of his Angels , that by their presence , the stout boldness of the Devils may be represt , and the Grace of Peace vouchsafed to us . For Angels are , as it were , the Protectors of Men , specially deputed by God for their Safety : Not as if God were unable to save them ; but as a King , who orders his faithful Officers to crush the Design of his barbarous Enemies , and to Chastize the Insolence of his Subjects . V. The same confirmed by Scripture . Scripture also confirms the same to us : Do not despise one of these Little ones ( saith our Saviour , ) for their Angels continually behold the Face of my Father which is in Heaven . Wherefore it nearly concerns us always to continue in the Fear of God , as being certain that we have God's Angels about us , who observe all our Thoughts and Actions : And whenever we do that which is good , we cause great Joy to our Angels ; whereas , if we do Wickedly , we drive them with grief away from us , and make way for the Devils to come to deceive and ensnare us . VI. The Effect of the Guardianship of Angels . We see therefore that the Assistance of Angels is of great advantage to Men , by procuring them much Good , and by diverting many Evils both from their Souls and Bodies . They greatly assist our Minds , by enlightning our Understanding to perceive Truth , and by exciting our Will to the exercise of Vertue , and to embrace the Good that is offered to us : They also put by many Evils which threaten our Bodies , whether from Natural Causes , or from Free Agents , as from Men that are our Enemies , and from Devils ; and prevent them from hurting those , whose Safety they take to heart . Sometimes also they send Sickness and Adversity , to correct Mens Vices , and thereby to reduce them to a sober and sound Mind . Yea , and sometimes may inflict Death also , and that in great Kindness ; forasmuch as it may be very profitable and necessary for some to be taken out of the World , lest being overcome by the Vanities and Lusts of this World , they should run themselves into Perdition . VII . The Superintendence of Angels , extends itself also to Countries and Cities . As there are Special Angels consigned to the Guardianship of Men , so there are others who have care of Cities and Countries committed to them , who , as so many Presidents , or Lords Lieutenants , do watch over them for their Good. And as a whole Nation doth in Dignity far exceed every particular Member of it ; so do the Angels , that preside over a whole People , excel those who have the Care only of some particular Person . Now that Nations have their Guardian-Angels alotted them , is most evident from Scripture , Deut. 32. 8. When the Most High divided to the Nations their Inheritance , when he separated the Sons of Adam , he set the Bounds of the People according to the number of his Angels , as the Septuagint expresseth it . Wherefore the Ancient Fathers believed , that the Archangels had the Care committed to them of the Government of the Universal Church . Thus we read that MICHAEL fought with the Dragon , stood up for the defence of the People of Israel , is the Provost of the Church , and assists particular Angels . What is more clear in Scripture , than that GABRIEL was sent with a Message to the Blessed Virgin , about the Salvation of Mankind ? and that RAPHAEL was sent to Succour Israel , and to exhort them to the Fear of God ? All which are evident Testimonies of the Publick Ministry and Administration of Angels . Book . 1. Part. 4. Chap. 1. G. Freman Inv. I. Kip Sculp To the Worshipfull Thomas Drax of Sibsy in the County of Lincolne Esq . This Plate is humbly Dedicated by Richard Blome The Fourth Part OF THE INSTITUTION OF PHILOSOPHY . VIZ. GENERAL Natural Philosophy . CHAP. I. Of the Essence and Certainty of Natural Philosophy . I. What Natural Philosophy considers . HAving considered the Nature of GOD , and enquired into his Attributes , as far as Human Weakness would permit , and afterwards examin'd the Essence of Angels and Devils , and discovered their Faculties and Operations ; PHYSIOLOGY comes next to be considered by us , which contemplates Natural Things , and deduceth their Causes from their first Original . For the Order of Nature seems to require , that having laid down a Supream and Universal Principle , we should next proceed to the examining of its Effects , that Affections belonging to them may be discovered to us . II. What Natural Philosophy is . Natural Philosophy therefore , or Physiology , is the Science of Natural Bodies , and their various Affections . And therefore is called Natural Philosophy , because it enquires into the Essence of Material things , and treats of their Properties , Accidents , or Modes : And those are called Natural Things , or Bodies , which are endued with Nature , or that are compounded of Matter and Form , which are the inward Principles of their Activity , Passibility , and Cessation . III. The Word NATURE taken in a threefold Sense . The Word NATURE is of various Signification : First , and more strictly , it is taken for the peculiar Disposition of Parts in some particular Body : For when we say , that it is the Nature of Fishes to live in the Water ; it is the same as if we said , that the Disposition of their Organs is such , as makes the Element of Water most suitable to them . Secondly , It is taken more largely for the Universal Disposition of all Bodies : And in this Sense it is nothing else , but the Divine Providence , forasmuch as it governs and directs all things by cetain Rules and Laws , accommodated to the Natures of things . Wherefore God is said , to cloath the Lillies of the Field ; to send Rain upon the Good and the Bad ; and to give Food to all living Creatures ; because , that by the Rules by him prescribed , all things conspire to the producing and maintaining such Effects as these . Thirdly , It is taken for the Essence of any thing , with the Attributes belonging to it : Thus we say , that it is the Nature of GOD to be Good , and the Nature of the Soul to Think . IV. Natural things do not differ from Artificial . Neither do Natural things differ from those that are made by Art , save only in this , that in the former , how mean soever they be , there appears a far more excellent Artifice , and more exact contexture of Parts , than in the latter . Yet this is common to them both , that they are moved from an inward Principle , and perform their Functions by their own Virtue . For a VVatch or Clock is no less moved of it self , by the Figure of its VVheels and VVeights , than a Ball of Lead is , whilst it falls down through the Air , towards the Center of the Earth . For every Natural thing is moved by a Motion deriv'd from another , and doth always retain the same , till it be put by by a stronger . V. Physiology is a true Science . Now that Physiology is a Species of Science , and is conversant about things that are True and Necessary ▪ appears from the Demonstrations that are made of Natural things ; the Certainty whereof depends on the Stability of the Things that are defined , and supposeth their determinate Essence . For Example , this way of Arguing , Every Extended thing is Divisible ; A Body is Extended : Therefore a Body is Divisible , could never be esteem'd a Demonstration , if it were not most certain that Extension enters the Nature of a Body , and that Divisibility , as a Property , ariseth from it . Now it is notorious , that all certain and necessary Knowledge , is Science ; since no such can be had , but where the Effects are demonstrated by their true Causes : And that many such may be had in Natural Philosophy , is not to be question'd . For we know that Matter is moveable , because it is a Substance extended in Length , Breadth , and Depth . We know that every Body may be carried on from one place to another ; because it implies a Contradiction , for one and the same Body to be in two places at one and the same time . And innumerable such like , which a Natural Philosopher considers as so many unshaken Truths , that cannot be gain-said by any Person in his Wits . VI. Whether Natural things be discerned by the Senses . If you say , That the Certainty which is required to Science , cannot be had in Natural things , seeing that Bodies and all their Attributes are only perceived by the Senses ; which being liable to Mistake , may represent False things to the Understanding : Whence it is that not only Children , but also Men of Age labour under so many Prejudices , which they being unable to correct , persevere in their Errors to theit Lives end . VII . Material things are not discerned by the Senses . I Answer , It is False that Material things are known by the Senses , as I have shewed by the Example of Gold , in the Second Chapter of the First Part of my LOGICK ; forasmuch as it continues always the same , tho' it puts on divers Forms , and appears variously to the Senses . For if we mind well how far our Senses reach , and what that precisely is , which they represent to our Minds ; we shall find , that they give us no such Notions of Material things , as we in our Minds have of them : And indeed , to speak properly , nothing is conveigh'd from things without us , by the Organs of Sense , to our Minds , save only some Bodily motions , by which the Idea's of Objects are offer'd to them . For what doth our Sight exhibit to us , besides outward Images , or our Hearing , besides Voices and VVords ? So that if we do apprehend any other thing besides those Pictures and Voices , that is , their Signification ; we may be sure the same is offer'd to us , not by our Senses , but by those Idea's or Notions that proceed from our Thinking Faculty . VIII . But are apprehended by the Understanding only . Wherefore , Bodily things are not known by the Senses , but by the Understanding alone : So that to be sensible of a Material Substance , is nothing else , but to have an Idea of it , which is not the work of the outward Senses , but of Cogitation . Neither must this seem strange unto us , seeing that Certainty is required to perfect Knowledge , which since it cannot be had from the Senses , as being subject to Error , we must have recourse to the Certainty of the Understanding that may correct our Errors , and represent the true Image of the thing to us . IX . Whether the Errors occasioned by our Senses , can be corrected by our Senses . If you urge further , that there are many Things that cannot be corrected by our Understanding , except our Senses be first well-disposed , and that our Mind borrows its Certainty from them ; as appears by a Stick standing in VVater , which because of the Refraction seems to be broken or bent , when indeed it is strait or whole ; because this Error is not to be corrected by the Understanding , but by the Touch : And the same may be said of the other Senses . X. Answer . I answer , tho' by our Touch we know the Stick to be streight , yet is not that sufficient to correct the mistake of our Sight , but there is need of a Reason to persuade us , that in this case we are rather to give credit to the report of our Touch , than to that of our Eye-sight ; which Reason cannot be ascribed to our Sense , but to our Understanding alone . It remains therefore that the knowledge of Natural things depends on our Cogitation and that they cannot be perceived by our Senses such as indeed they are . XI . An Objection against the certainty of Bodily things . You will object , that Material Things , of which Natural Philosophy treateth , do not continue in the same State , but are subject to various changes , quitting and assuming several Forms , which seems to be inconsistent with the Notion of Science , which is the knowledge of things certain and Perpetual . For what is more common than the Rise and Destruction of Bodies ? For all things that consist of Matter and Form are subject to Generation and Corruption , and never continue long in the same state and condition . XII . The Certainty of Bodily things established . Nevertheless we must say , that Natural Philosophy is indeed a Science , because the Nature of a Science is not consider'd with respect to the things it treats of , but according to its Axioms of an undoubted Eternal Truth . For tho' the things which Physiology handles , be changeable ; yet the Judgments we make of them are stable and firm ; and consequently the Truth we have of them is Eternal and unchangeable . As for example , these are indubitable and constant Truths , that all that is Bodily is changeable ; that every Mixt Body is dissoluble , tho' they be of mutable and changeable things . For as the knowledge we have of Matter is Immaterial ; so we may have an immutable Science of changeable and corruptible things . XIII . The Object of Physiology . Forasmuch as every Science hath a Subject , about which it is conversant , and to which , whatsoever is handled in the same may be attributed either as Principles , Parts or Affections ; we say that the Material Subjects of Physiology , are natural things ; and that Magnitudes , Figures , Situation , Motion and Rest are the Formal Subject of it ; as under which , Bodily things are consider'd , and from whence they derive their force and Virtue , as shall be said in the 10th Chapter . Wherefore if a Natural Philosopher consider nothing in Matter besides these Divisions , Figures and Motions , and admit nothing for Truth concerning them , which is not evidently deducible from common Notions , whose Truth is unquestionable , it is altogether manifest , that no other Principles are to be lookt for in Natural Philosophy , than in Geometry or abstract Mathematicks : and consequently that we may have as well Demonstrations of Natural Things , as of Mathematical . Book . 1. Part. 4. Chap. 2 G Freman . 〈◊〉 I. Kip Scul To the. Right Worshipfull Sr. Samuel Garard of Brafferton hall in the. North Rideing of Yorke shire Knight , & to Elizabeth his Lady Daughter & Coeheyre of Sr. Thomas Spencer of Yarington in Oxford Shire Baronet This Plate is humbly Dedicated by Richard Blome XV. Natural Philosophy is either General or Special . Natural Things are considered two manner of ways in Physiology , viz. either Generally or Specially ; and accordingly Natural Philosophy is Distinguisht into that which is General , and that which is Special or Particular . General Physiology is , that which considers a Body or Matter in General , that is , its Nature , Principles , General Affections and Differences . Special or Particular Physiology is that , which considers Matter as distinguisht into Species ; and doth more particularly explain the Properties , Differences and Changes of those several Species . Wherefore we are to begin with the most simple Principles of Natural Things , and from them proceed to the Bodies themselves , that are made up of them . CHAP. II. The Existence of Material Things Proved . I. We may question the Existence of Bodily things . FORasmuch as it is lawful to doubt of every thing , whether or no it do Exist , as long as its nature is not clearly known to us ; we may also question whether Material Substances be , beside our Cogitation , and if they be , by what Argument this may be proved : As to which thing every one will be able with great ease to satisfie himself in this matter , only by giving heed to the Conception we have of Bodily Things . II. The Notion of a Material thing frequently accurs to us . No Philosopher ever deny'd that we have the Notion of Material Things ; yea , if we throughly examine their Nature , we shall find many Properties in them , which would not agree to them , if they had not some Nature . For we can Demonstrate of an Extended Being , that it is Moveable , Divisible , Impenetrable , &c. For since to be extended is nothing else but to have distinct Parts , it cannot happen by the Power of Nature , that the parts of Matter should take up the same place . III. God can do whatsoever can be clearly known , or apprehended by us . Moreover , we know God to be Omnipotent , and that he can do whatsoever can be clearly and Distinctly known by us . Yea , if we will reason aright , we must say , that nothing is impossible , but because it is inconsistent with our clear and distinct perception : But we do clearly and distinctly know Matter to be something extended in Length , Breadth and Depth : Therefore Matter must at least be producible by God. IV. The Actual Existence of Bodily things proved . Nor will it be difficult to prove that this Material Substance doth exist actually . For tho' our Senses be apt to deceive us ; yet we cannot doubt of all the things they represent to us . Because we dayly experience and find in our selves many Ideas or Species of Natural things , which must proceed from some things or other without us , that are the Causes of such Ideas . For it doth not depend on our Wills , that we perceive by our Senses one Substance more than another ; but that difference proceeds from the Objects , which produce such a Sensation in us . For oftentimes these Species occur to us without our heeding it , and before that we think of them by any reflex Cogitation . Wherefore we must conclude that these Ideas proceed from things , which consequently must exist in Nature . Lastly , there is no Man who doth not perceive himself to be endued with an Imaginative Faculty , in that he doth almost every moment conceive so various and different things ; now the Imaginative Faculty considers Bodies as present , and is altogether conversant about Bodies ; wherefore it is necessary in order to its perfection that Material Things should exist . V Tho' the Senses deceive us in the manner of their representing things to us ; yet not with respect to the substance of things . If you object , that nothing of certainty can be gather'd from the Senses , forasmuch as they do frequently deceive us . For we find by experience that things are represented by them otherwise than they are , as when a Square Steeple appears round to us at a distance ; or when a great Brass Ball at the top of a high Steeple , shews like a little Apple to our Sight . VI. Answer . I answer , that these Errors do not destroy the Truth of Material Things , tho' our Senses deceive us in their representing of them . For it may happen that that which I see with my Eyes , is quite another thing than I Imagin it to be ; yet for all that it cannot be , but that which does appear to me must be something Material , which is sufficient to prove the Existence of Matter ; because the variety of Figures does not take away the Subject , but rather doth manifest it , and forceth us to confess , that those things that appear to us under divers Figures are something that is Material or Corporeal . VII . The Motions we find in our selves prove us to be Corporeal . Neither do those things that are within us , less evidence this Truth than those that are without us : For if we give heed to the Ideas of things in our Mind , we shall find that besides the notions of Intimate Consciousness , Perception , Judgment , and Affections , we meet with others that consist of Extended Parts , diversified by Length , Breadth and Depth . Moreover , besides these , we experience many Motions in our selves , as Hunger , Thirst , Pain , which do not belong to our Soul , forasmuch as it is a Thinking Being ; for the Soul of Man being Immaterial is incapable of any of these , and only perceives them as she is united to a Material Substance . For Pain doth not touch our Mind , save only so far as it is joyn'd to the Body ; neither can it be vexed with Hunger or Thirst , save only so sar as it is link'd to the Stomach and Throat , the one whereof is pinch'd with a Vellication , and the other with Drought . So that it cannot be doubted but that there are many Ideas of Natural Things in us which are not fram'd by our selves , but come to us from abroad , and present themselves to our Imagination . VIII . If there were no material things without us , God might be thought to impose upon us . For as the Philosopher discourseth in the last Part of his Principles , Sect. 1. We may enquire concerning the thing which is represented to us , wheit be God , or something distinct from him : But because we feel , or rather by Motions imprest upon our Senses , do clearly and distinctly perceive a certain matter extended in Length , Breadth and Depth , whose various parts have diverse Figures , and are tost with several Motions , and are the cause of Diverse Sensations in us , as of Colours , Smells , Pains , &c. If God did immediately by himself represent the Idea of Matter to our Mind ; or if he should cause the Idea thereof to be represented to us , by any thing wherein there was nothing of Extension , Figure or Motion , this would be to impose upon us . For we clearly understand Extended Matter , as a thing altogether distinct both from God and from our selves , that is , our Minds ; and we clearly seem to perceive that the said Idea proceeds from things plac'd without us : Now it is utterly repugnant to the Nature of God to impose upon us . And therefore we must peremptorily conclude that there is really Existing such a thing as is extended in Length , Breadth and Depth , and hath all those Properties , which we do clearly perceive do agr●e to such a Being . And this is that thing which we call Body or Matter . IX . The Order of things to be handled hereafter . But forasmuch as every thing is best known by its Essence , Properties and Affections or Accidences , to the end we may have a more perfect knowledge of Matter , whose Existence we have just now demonstrat●d , it must be our business to prove , wherein its Nature doth consist , what are its Properties and what Accidences it is capable of . Accordingly we will first enquire what it is that doth constitute Matter , and next what those things are that do inseparably accompany it , and lastly the Accidences that happen to it . CHAP. III. Of the Nature and Constitution of Matter . I. What Matter is , and how it differs from a Body . MAtter is a Body , in asmuch as it is a Body or a Substance extended in Length , Breadth and Depth : Wherefore a Material and a Bodily thing are Synonymous Terms , and do not differ , save by our Mode of considering them . That which consider'd absolutely is call'd a Body ; the same with regard to that which is made of it , is call'd Matter : As for example , this extended Mass , consider'd as something undivided , and indistinguisht , is a Body ; but if referr'd to those distinct Bodies that are made out of it , it is called their Matter . II. This Matter doth not differ from Aristotles first Matter . This is that First Matter about which there are so many Squablings in the Peripatetick School ; and is nothing else , but an inadaequate Conception of a Body , as it may be conceiv'd by us without any Figure , Hardness , Softness , Colour , or any other Modifications , and only as Extended , and consisting of three Dimensions . For the further Explication of this N●tion , and that the agreement of the Cartesians and Peripateticks in this matter may appear , I shall add these following Propositions . III. How Matter is said to be without Form. The First Proposition : The First matter is without form : For in this , the Notion of Extension is abstracted from all Modifications , that belong to the Essence of a Body . IV. How it is the same in all Bodies . The Second : The Matter of all things is the same ; for all Bodies agree in this first or Primary Attribute of a Body , viz. Extension , neither is there any Distinction between them with relation to the Matter . V. How Matter is capable of all Forms . The Third : Every thing may be made of every thing ; or , according to the Peripateticks , Matter is capable of all Forms : For since all Bodies agree in Extension , all their difference must be from their various Modifications ; if therefore there be an Efficient Cause sufficient to alter these Modes , it may make every thing of Every thing . On this Proposition are grounded all those varieties which are observed in Bodies . VI. How it is ingenerable and incor●uptible . The Fourth : A Body as such , or the First Matter , is Ingenerable and Incorruptible : that is to say , there is no new Substance created ; neither is the least part of Matter annihilated ; for only the Modes are changed , in all Alterations . VII . What we are to understand by the word Matter . Physical Matter therefore , or a Natural Body , is a Substance Extended in Length , Breadth and Depth ; neither can any thing else be represented to the Imagination by the name of Matter : For Extension , as hath been said , is that Primary , Intimate , and Radical Attribute , which is conceiv'd or apprehended in every Body , and which in all alterations continues the same , nor can it be destroyed , but by Annihilation of the Body . So that we must stand to it as an undoubted Truth , that Extension is identified , that is , is one and the same thing with Matter , so that how much soever is taken from Quantity , so much is taken away from the Body ; and on the other hand , whatsoever is taken from Body , the same is taken from the Quantity of it . VIII . Aristotle doth not oppose this Doctrin in his Metaphysicks . Most men I know are of Opinion , that herein we differ from Aristotle , who in his Metaphysicks tells us , that Matter of it self is neither Quid ( something ) nor Quantum ( of any Bulk or Quantity ) nor any other thing of all those , whereby a Being is determin'd . From which words they argue that Aristotle supposed Matter to be devoid of all Extension , yea that it did not exist in the nature of things . To which I answer , that Aristotle indeed makes a distinction between Extension and Quantity , which we also freely admit , because Matter may be conceived without Quantity . For he that Measures a piece of Land , immediately conceives the Extension of it , but doth not know the Quantity of it , till after he hath measur'd it . Indeed Quantity is nothing else but a certain mode of Extension , or some Measure of it , by which we answer him , who demands what the Quantity or Bigness of a Body is . And so Quantity is an Attribute modally distinct from Extension . And in this Sense it is not repugnant to say , that Matter is an extended Substance , and yet that it is nothing of all those things which Aristotle in the foresaid place removes from it ; forasmuch as they cannot be understood but of Matter determin'd by some particular Form. Thus we cannot say that Matter Universally taken , and as consider'd at first view , is either Hot or Cold , that it is of such a determinate Measure , or that it is some particular thing , as Wood , Marble , Gold , &c. much after the same manner as when we consider a living Sensitive Creature in General , we cannot say that it is a Horse more than a Lion or any other particular Species . IX . Extension is not the Mode of a Body . Neither do those argue at any better rate , who distinguish Extension from Matter , and consider it only as a Mode of it : As for example , whilst they mind the Extension of a Table , they will have the Extension to be the Mode , and the Table , the Substance whose Mode it is : For these talk as absurdly , as if one hearing another discoursing of the City of Rome , should imagine these to be two different things , whereof the one should be the Mode and the other the Substance ; or as if one should go about to distinguish Humanity from Man. For as Humanity , or the Nature of Man , doth not differ from Man generally consider'd , but only as an Abstract and Concrete , so neither doth Extension differ from a Body in a general acception . X. Why the Natural Philosophy of the Schools is so barren . Those therefore who deny that Extension constitutes the Nature or Essence of Matter , will never be able distinctly to explain what they mean by the Word Matter , nor wherein its Essence doth consist : Yea , they lay that down for a Principle , from which it is impossible for them to deduce any Consequence , which may illustrate the Mind of Man , or be of use towards the discovery of any Truth ; and therefore they must not wonder to find their Physiology so barren as it is , and that they have not been able hitherto to explain the least product of Nature by means of it . XI . Whether there be no more Matter in a Vessel fill'd with Gold , than in one fill'd with Air. But they who estimate the Properties of Matter by their Senses , and by them measure the Essences of things , argue thus against this Opinion . If a Bodily Substance were something indistinct from Extension , it would follow , that wherever there was found some Proportion of Matter , there would also be the same of Quantity : But this is found to be false in two Vessels of the same bigness , forasmuch as more Matter is found to be in that which is fill'd with Gold , than in the other which is only fill'd with Air or Water . Therefore Quantity is not always proportionate to the Body , and consequently differs from it . XII . Answer . I answer , that there is no more Matter in the Vessel that is fill'd with Gold , than in the other that contains Water or Air , tho' indeed there be more Hardness and Weight in the one than the other : For the Essence of Matter doth not consist in Hardness or Weight , or any other Qualities ; for Fire that is subtil , and melted Wax that hath lost its hardness , is never a whit less a Body , than the heaviest Metal ; and therefore Matter precisely consists in this , that it is extended in Length , Breadth and Depth , which is found to be equal in both Vessels . XIII . The Nature of a Body doth not consist in Hardness . Conclude we therefore , that the Nature of Material things doth not consist in Weight , Hardness , Colour , or the like , but in this only that they are Extended Beings . For as to Hardness we can deprehend nothing else of it by our Sense , than that the Parts of hard Bodies resist the Motion of our Hands , when they run against them ; for if as oft as our Hands are mov'd towards any place , all the Bodies that are there should give way , and remove thence with the same swiftness , as our Hands advance , we should never feel any Hardness . Neither can it be conceived , that the Bodies which thus remove or give way , should therefore lose the Nature of Bodies : wherefore the Essence of Material Things doth not consist in Hardness . XIV . Nor in Figure , Weight , Colour , &c. And in like manner it may be made out , that Weight , Colour , and other such Qualities , which by the Senses are perceiv'd in Matter , may be taken away from it self , remaining whole as before : For suppose the Hardness of Ice melted into Water , to be vanished ; its Figure also to be quite changed ; suppose also that Water to be rarified into Vapors , and having quit its Bulk and Heaviness to disappear from our Eyes , by its extreme Tenuity and Thinness ; yet it is evident that the Bodily Quantity or Extension , which is the Seat and Subject of all these mutations , does remain entire and untoucht , and altogether inseparable from the Ice , the Water and Vapors . XV. An Objection that Matter ought to be Defined by some Relation to the Senses . It may be you will say , that tho' a Body be not bound to one Figure , and may be deprived of a Cubical , Triangular or Spherical Figure , yet must it still have some Figure or other . In like manner tho' a Body be not necessarily either Soft or Hard , Hot or Cold , yet it is necessary that a Body should be sensible , or as Lucretius expresseth it , Tangible . Besides a Body , as we see , Nothing can Touch , or Touched be . XVI . The First Answer . To which I answer , First , that Sensibility is only one of the Properties of a Body , and not the whole nature of it ; since a Body may really exist , tho' there should be no Men to whose Senses it might offer it self to be perceived ; as we know that Matter was created before there were any Senses made . Wherefore there seems to be no absolute Necessity that every Body should be sensible . On the contrary , we find that there is no Body , which may not become insensible , by being divided into so minute parts , as not to be able to move our Nerves , especially if those parts be also swiftly moved . XVII . The Second Answer . I answer Secondly , that a Power to affect the Senses , presupposeth something that is extended , and is no more than a Respect , and Extrinsecal Denomination , which must be grounded in some Internal or absolute Attribute . XVIII . Extension only belongs to the Essence of a Body . Extension therefore is that alone which constitutes the Nature of a Body , as agreeing to all , only , and always to them , so that nothing can be perceived in a Body before it . For it agrees to every Body , to Earthly as well as to Heavenly , to the Sun , Fire , Air , as well as to Wood , Stone , &c. It belongs only to a Body , because no Intellectual Substance is Extended and Divisible . And it agrees always to a Body ; because tho' all other Attributes be taken from it , and be changed , yet the Extension continues as long as the Body doth . Besides , nothing can be conceived in Matter before Extension ; for tho' Matter be Divisible into Parts , yet that is not the first affection we perceive therein ; for therefore only a thing is Divisible because it is extended . XIX . That Quantity seems to be encreased in Rarefact●on . Some are of opinion that Quantity may be encreased , without any encrease of the Matter : Thus in Rarefaction the Quantity seems to be augmented , tho' the Substance continue the same it was ; and this they endeavour to prove by a Pot of Water on the Fire that boils over ; at which time they suppose the Water to take up more place than it did before ; now it cannot take up a larger place , without a greater degree of Extension . XX. Rarefaction is performed , by the introduction of another Matter . I answer , that Rarefaction is not performed by an addition of Quantity , but by the entrance of other little Bodies from abroad ; so that those Bodies are said to be rarefied , whose Pores being opened are filled with the Air , or some other Subtil Matter entring into them ; and they become close or compact again , when by the expulsion of those Adventitious Particles , those Spaces are narrowed again , and the parts come closer together . For certain it is , that nothing can be encreased in Quantity , but that at the same time its Extension must be encreased also . Of which I shall treat more at large when I shall have occasion to speak of Rarefaction . XXI . An Objection from the Nature of Space . But you will object , that Space is conceiv'd to be something extended in Length , Breadth and Depth : Yet Space is not a Body ; therefore the Essence of a Body doth not consist in Extension . The Minor is proved , for that if space were a Body , then one Body would be in another . XXII . Answer . I answer , It is false to say that Space is not a Body ; because the same Extension which constitutes the nature of a Body , doth also constitute that of Space . And therefore to say that a Body takes up such a Space , is no more than to say , that it is so great a part of the World ; because Bodies bring their Spaces along with them , and when they remove , carry them away with them . And when Bodies are said to leave their Spaces , it is the same as to say that they quit the Magnitude , Figure and Situation they had amongst other Bodies . Wherefore the Extension of Space doth not differ really , from the Extension of a Body , and therefore we must conclude every Space to be corporeal . XXIII . Tho' God be immense or Infinite , yet he hath no quantity . And whereas some say that God occupies or takes up all places of the World , as being Insinite , Immense and Omnipresent , &c. which cannot be conceived without some Extension ; this is an objection of no moment . For tho' God be Omnipresent , yet this doth not prove him to be extended ; because by an Extended Being all Men understand something that is Imaginable , of a certain Figure and Magnitude ; whose parts are separate from each other , so that one of them cannot be in the place of the other ; which cannot agree to God , or any Spiritual Substance , as being imperceptible to the Imagination , and apprehended by the Intellect only . When we say that God is extended through all the World , this is not to be understood of the Extension of Substance , but of the Extension of Power , so that the meaning only is , that God can exercise his Power , sometimes on a greater , and other times on a less part of Matter . For if there were no Bodies , we could not conceive a Space , to which God should be co-extended . XXIV . A Natural Body is the same with a Mathematical Body . Wherefore with our Philosopher I profess my self to own no other Matter of Bodily things , than that which is altogether Divisible , Figurable and Moveable , which Geometricians call Quantity , and which they make the object of their Demonstrations ; and that I consider nothing in it , besides those Divisions , Figures and Motions which are the properties of it . And tho' such a Body as I have here described , be by others called Mathematical , yet I take it here in this General Physiology for a true and Real Body . Indeed Natural Philosophy is one of the parts of the Mathematicks , and has the same relation thereto , as Metaphysicks have to the other Disciplines ; the only Difference between them is , that the Mathematicks consider Magnitudes and Figures abstractedly , without being sollicitous whether they be such indeed , or only can or may be so . But Physiology considers the same as inherent in Matter , and as she finds them in the several Bodies that are in the Vniverse . Now this Abstraction doth not at all hinder , but that Physical or Natural Matter may be the same with the Geometrical , because the Species is not really distinct from its Genus . CHAP. IV. Of the Proprieties of Extended Substance , viz. Mensurability , Divisibility and Impenetrability . I. Mensurability , Divisibility and Impenetrability are the Properties of an Extended Substance . THere are three Properties which accompany an Extended Substance or Quantity , viz. Mensurability , Divisibility and Impenetrability . Mensurability is an aptitude in a Body , whereby it may be apply'd or conform'd to a certain measure . Divisibility is that disposition of a Body whereby it is conceiv'd to have Parts into which it may actually , or by thought , be divided . Lastly , Impenetrability is the distinction of one Extended Being from another , by which the Extension of one thing is different from that of another ; so that two things Extended cannot be in the same place , but must of Necessity exclude each other . II. From the Extension of Matter we may easily infer its Divis●bility . That a Bodily Substance is Mensurable and Divisible , may be easily gathered from what goes before ; for since it hath a threefold Dimension , Length , Breadth and Depth , it must also admit a threefold Measure , by which its Magnitude may be determin'd . It s Divisibility also may be gather'd with the same evidence from its Extension , forasmuch as it hath Parts placed besides one another , so that we may easily conceive them to be separable , in which the very Essence of Division consists . But because many , who follow DEMOCRITUS , are of opinion , that there may be Indivisible Bodies out of which all other things are made , it will be worth our enquiry , whether the parts that constitute Matter , be Indivisible , or such as admit of further Division . III. Every Body is D●visible . To which I answer , that Matter is not compounded of Indivisibles , that is , of parts that cannot be divided into others . This is the opinion of most Philosophers , and the reason is this , because the Essence of Matter is to have parts that are extended ; and whatsoever is extended , is Divisible . For it cannot be conceived that a thing should be Extended , and yet not be Divisible ; because Extension is nothing else , but an answerableness to divers points of Place , and such a disposition wherein one part is distant from another , not by actual separation , but by an aptitude to be separated , which is sufficient to make one thing not to be another . IV. Th●re are no Indivisible Bodies . Moreover , Beings are not to be multiplied without necessity ; now there is none that forceth us to have recourse to Indivisibles : For Points are not the Parts of a Line , but smaller Lines ; neither are the Parts of a Surface Indivisible Lines , but smaller Surfaces ; neither are the Parts of a Body Atoms , or Indivisibles , but Particles indefinitely lesser , or Divisible without end . For in things extended we can never come to the very least Part , because as long as it is extended , it cannot but be conceiv'd Divisible . Whence proceeds that Axiom , that no Quantity or Magnitude can be made of that which is not Quantitative . If you say that the Terms or extreams of Magnitude cannot be explain'd without them ; I answer , that every Extended Being is sufficiently terminated by the negation of any further Extension : Nor do I see , what can be more requir'd to the Termination of a thing , than that it is no further extended . If it be said that they are necessary to joyn the Parts of Matter . I answer that neither are they necessary upon that account , because the Parts of Matter sufficiently hang together without standing in need of a third to link them together V. An Argument to prove Atoms . You will Object , that there are some Particles in Bodies so small , that they cannot be divided ; and without question there may be such , as Atoms , and the like , which can by no human artifice be made less than they are ; and yet no Body can deny these to be Corporeal Substances ; therefore it cannot be said that a Body is divisible into parts that are always further Divisible . VI. Epicurus his Atoms are Divisible . I say it is Impossible that any Body should have any parts so small as to be Indivisible , because the least part or Atome of a Body is extended , and therefore cannot be Indivisible . For Bodies as such are Extended , without which they cannot be conceived . For suppose an Atome lying on a Plain , or three Atomes join'd together on a Plain , they must be suppos'd to have Sides , whereby they touch both themselves and the Plain , which is their Extension . VII . How Matter is said to be Divisible . Matter therefore is Indefinitely Divisible ; that is , the Mind of Man in the Division of Matter can never come to a Term where it is stopt from proceeding further ; for the least Particle will always be extended , and whatsoever is extended must therefore be conceiv'd to have distinct Parts , and what is conceiv'd to have such Parts ; must be conceiv'd Divisible ; especially if we consider that God can do whatsoever we do clearly and distinctly conceive . And tho' God , it may be , will have it so , that some Atomes should not be actually divided by us , yet we must not say that he hath deprived them of the Power to be divided ; for we clearly understand that they can be divided by God , as long as we suppose them to be Extended . Therefore Indivisibles cannot enter the Composition of a Body ; forasmuch as nothing is found in a Body , that doth not consist of Length , Breadth and Depth . VIII . Matter is Indefinitely Divisible . But tho' the Parts of Matter be always Divisible , so as that we can never come to the very least of them ; yet doth it not follow therefore that the Parts of Matter are Infinite , but only Indefinite . For it is one thing to say a thing is Infinitely Extended ; and another , to say it is only Indefinitely so . That is Infinite in which there are no Bounds at all , and so God alone is Infinite : Whereas those things which in some respect only have no End , are better called Indefinite , than Infinite ; such as Matter is , which divide it never so much , will still be further divisible . And herein Magnitude differs from Multitude , because in the latter we come by division to a Unity or Indivisible ; whereas in the Division of the former , we may still go on , and divide for ever . Because a Body cannot be divided into so many Parts , but that every one of them will still be capable of a further Division ; and therefore these parts are said to be Indefinitely , extended . This will appear more clearly by an Argument taken from Geometry , because in that Science it can be demonstrated , that there are some Magnitudes which have no common Measure , and therefore are called Incommensurable , as are the Diagonal line , and the sides of a Quadrangle or Square Figure . IX . What Quantities are said to be Commensurabe . Two Quantities are said to be Commensurable , when we can find a Third , which is a Part of both the one and the other , that is to say , which measures them both . Thus a Pace and a Rod are two Commensurable Quantities , because we can name a third Quantity , viz. half a Foot , which will measure both a Pace and a Rod ; for the half Foot taken five times , will be equal to a Pace , and the same Measure taken twelve times will be equal to a Rod. X. What Quantities are Incommensurable . Fig. 1. But if no such third Quantity can be found to measure them both , then those Quantities are called Incommensurable . Supposing therefore the Figure ABCD to be a Quadrangle , it is manifest by Geometrical Demonstration that the side of AB is in Commensurable with the Diameter or Diagonal AB . XI . The Divisibility of Matter Demonstrated Divide we then in our Mind the Line AB into a thousand equal Parts , and every one of those again into a thousand more , and these last again into a thousand other equal Parts . This Division may be continued for a hundred years , and yet shall we never be able to come to Parts so small , that we can say that the Line AC contains a certain and determinate number of them . Which could never happen so , if Extension could not be Indefinitely prolonged . For after the Division , by Example of the Line AB into the least Parts into which Extension could be divided , it would necessarily follow that the Line AC contains a certain and determinate number of them . Wherefore we must conclude that every Extension , or determinate Portion of Matter is Indefinitely Divisible . XII . An Objection against the Divisibility of a Body . It may be oppos'd to this Demonstration , that in case all Bodies were Indefinitely Extended , it would follow that two Bodies of unequal Magnitude , would have an equal number of Parts . Yea , moreover if it be granted that one Part of a Body be Indefinitely Divisible , there will be as great a Divisibility in one part as in the whole ; For Example , in a grain of Barley as in the whole Field wherein it grew . But this seems ▪ very absurd , that there should be as much divisibility in the least part of Matter as in the vastest quantity ; wherefore Indefinite Partition cannot agree to Extension . XIII . The First Answer . To which I answer in the first place , that they are very much mistaken who attribute Equality or Inequality to a thing Indefinite , these being the Properties of Finite things only . For how can those things be call'd Equal or Unequal , which are Indefinitely divisible , and to the least part of which we can never come ? Those things only can be call'd Equal or Unequal , which we can comprehend , and compare together ; but not those which are Indefinitely Divisible , and which our Mind can neither apprehend , nor compare together . XIV . The Second Answer . Secondly , supposing two unequal Bodies , should be divided into an equal number of Parts , yet would it not follow thence that those two Bodies were Equal ; because the Parts of one Body , would proportionably be greater than the Parts of the other Body , and therefore the Divisibility of one Grain would not be so great , as that of the whole Field wherein it grew , tho' it be Divisible into as many parts . XV. The Incomprehensibility of the Divisibility of Matter is no Argument against the Truth of it . Neither it a sufficient argument against this , that some say they cannot comprehend how the least Body should be Indefinitely Divisible ; for who knows not that there is a vast number of things which cannot be comprehended by the Imagination ? The famous ROHAULT proves this by two Examples , very pat to the purpose , viz. by the Division of Gold which is made by the Gold-beaters , and the partition of the same Gold made by the Wire-drawers . XVI . The Division of Gold by Gold-beaters . For the Gold-beaters of one ounce of Gold make 2790 Square Leaves of Gold ; each side of which contains two inches and ten Lines ; and if we deduct hence the Wast Pieces that are cut off , which almost reach to one half of it , the surface of every Leaf of Gold will be found to contain 1156 square Lines ; so that all of them joyned together side by side , will make out a superficies of 3155880 square Lines . And if we add to this the Third part thereof for the Loss in the making , it will follow that the Gold-beaters out of one Ounce of Gold , beat 4270840 square Lines . Seeing therefore this Number includes 159092 , the quantity of the Basis of the Cube of one Ounce weight , it is without doubt that that Cube , which contains only five Lines with a Seventh part in height , is at least divided into 159812 square Segments . XVII . The Division of Gold by Wire-drawers . And tho' this Division of Gold into Leaves be very surprizing , yet is it much Inferiour to that which is performed by the Wire-drawers . These have commonly lying by them many pieces of Gold of a Cylindrical figure , being every one of them of 16 Marks weight ; one of the most regular of which pieces was shewed to the foresaid Philosopher , the length whereof was of two Inches and nine Lines , so that the Cylindrical superficies of it was of about 12672 square Lines : This Superficies being cover'd with many Leaves of Gold , which put together weighed an Ounce and an half , was through the holes of a perforated Plate , drawn into Wire of the thinness of an Hair. Of this Thred he took 150 Foot , which he found upon exact weighing to weigh 36 grains , wanting a part of a Grain : So that the foresaid Cylindrical Mass , at this rate , must make a Thred of 307200 Foot long ; whence follows , that it was drawn out 115200 longer than it was at first , and consequently that its superficies did exceed its first length above 340 times . If we add to this , That this thin Thred may be beaten into a Leaf , and thereby obtain a superficies twice as big as it was before , and so will exceed its first Magnitude 680 times , and consequently make 80616960 square Lines : And that after the whole Thred is thus beaten into a Leaf , the superficies of it is all cover'd with Gold : It follows thence , that one half Ounce of that Metal , whose Leaf is cover'd with Gold , is to that degree attenuated , that the superficies of it consists of 80616960 square Lines . Wherefore seeing that quantity contains 325795 times 26 Lines , and 22 / 49 , which is the value of the Basis of the Cube of Gold of one Ounce , it necessarily also follows , that the Thickness of Gold , which covers the gilt Leaf , is at last reduced to the 325795 22 / 49 part of the half of the height of one Ounce ; so that the quantity of five Lines , with a seventh part , hath at this rate been divided into 651590 equal parts . XVIII . Every thing that 〈◊〉 cannot comprehend , is not therefore impossible . And lastly , If we consider that this Division of Gold might still be carried further , if the Metal so extended were not design'd to certain uses , which cannot permit any further attenuation of it ; as likewise that there are many Agents in Nature , who carry their work to a greater degree of Subtilty and Tenuity , it will still appear more clearly , that that is not impossible which our Imagination cannot perceive or comprehend . XIX . Mat●er is impenetrable . Another property of Matter is , Impenetrability , which tho' Negative , agrees to a Body , as well as Divisibility . For since to be Extended , is nothing else but to have Parts distinct from each other , it implies a Contradiction , that one Part should take up the place of another , or that one Part should be contained in the other , or ( which is the same ) that one Part should be another . For it cannot be conceived , for Example , that the Part A of an Extended thing , should penetrate the Part B equal to it , without conceiving the middle Part of the Extension of A to be taken away or annihilated ; now that which is annihilated cannot penetrate another thing . Besides , since any determinate Body , Ex. gr . of a Foot long , hath all things necessary to the constitution of such a Quantity , there can no other Body of a Foot long be added to it , without making an Extension of two Foot : And to reduce them by Penetration to one Foot , is not so much to joyn one Body to another , as to destroy it ; and therefore we must conclude , that Matter is is impenetrable , and that Penetration and Extension can never agree together . XX. Mensurability , Divisibility , and Impenetrability are the Properties of Matter . Whence it is evidently deducible , that Mensurability , Divisibility , and Impenetrability , are the Properties of Matter , because they always accompany it , and can never be separated from it . For that I call the Essential Property of any Subject , which we conceive to agree with any Subject , and which necessarily follows it : As , it is the Essential Property of a Triangle , that two of its sides taken together are greater than the third ; Or , that three Angles are aqual to two right ones , because these so agree to a Triangle , as necessarily to accompany and inhere in the same . CHAP. V. Of the Division of Matter into Sensible and Insensible Parts . I. Matter it divided by Motion . THo' Motion be only the Mode of a Body , and cannot be conceiv'd to be without it ; yet is it so much conducing to the Beauty and Harmony of the World , that all the Matter in it would be without Form , if it were not divided by Motion , and cloath'd with those Affections we find in the several parts of it . Hence it is the Philosophers tell us , That Nature is the Principle of Motion and Quiet , because by means thereof Material Substances acquire that variety we observe in them . By Motion Bodies get Heat , and by Rest they become Cold. But when Philosophers define Nature to be the Principle of Motion and Rest , they are not so to be understood by us , as if all the variety we find in Matter were the effect of Motion and Rest , forasmuch as that depends also on the Magnitude , Figure and Scituation ; but only that they are the Principal Attributes of Natural Bodies . For there is no question , but that from the Beginning , Motion made the distinction of Bodies , and gave them those Qualities and Affections , which we find in them . And hence it is , that Sensible and Insensible Parts do arise . II. Of Parts , some are Sensible , others Insensible . Sensible Parts are those , which being made up of many Insensible ones , do affect the Senses . Insensible are those , which because of their smalness do not fall under Sense , and are only known by their Effects , or the Discourse of Reason . III. There are Insensible Parts in the World. Neither can we doubt of the Existence of such Parts in the World , if we thrôly examin the Nature of a Body , and consider the Inseparable Properties that belong to it . For every Body is Divisible , so as that we can never come to the last Particle of it ; though it be certain , that by continual Division , we shall at last come to a part , which because of its littleness , will not be perceived by our Senses , and yet will not therefore lose the Nature of a Body ; because as Division doth not constitute the Nature of a Body , so neither can it destroy it . Wherefore , there are Insensible parts in Matter , which none of the Organs of our Senses can give us any notice of . IV. Fluid Bodies consist of many Insensible Parts . This appears most of all in Fluid Bodies , which consist of such small parts that no sense can perceive them . Thus we see that Flesh , Bread and other things are spoil'd by the Air and Water ; but how this is done our Reason only can inform us : for we gather from the effects that some Insensible Particles of the Air and Water , insinuating themselves into the Pores of the Flesh and Bread , do there settle themselves in a manner contrary to their constitution as to Figure , Motion , Situation and Rest ; wherein the Nature of Corruption doth precisely consist . For we cannot conceive any Body to be corrupted , but by the accession of some foreign parts , which are contrary to those of its first constitution : And forasmuch as these small particles are not discoverable by any of the Senses , they may well be call'd Insensible Parts . V. All Bodies cannot affect our Senses . Neither is it any matter of Wonder , that these Least particles do not affect our Senses ; because our Nerves , by which we perceive external things , are like to so many small Cords , that are Compounded of many particles , less than themselves , and therefore cannot be shaken by the least of Bodies ; and consequently cannot carry external Bodies to the Brain , where the chief Seat of the Senses is . And I suppose every Rational Man will own , that it is much better to judge of what happens in little Bodies , not subject to Sense , suitable to what our Senses perceive to happen in great Bodies , than to invent I know not what strange things , which have no likeness at all with the things we do perceive by our Senses . VI. From our Clothes , Iron , &c. Particles proceed , which no Sense can give us any notice of . Besides , we do daily experience , that a Knife loseth certain of its small Particles by being Whetted , and that many such like wear away from our Clothes , neither of which are perceived by our Senses . For the Polishing of hard Bodies , and the wearing away of Woollen-cloth or Silks , is done by the loss of such Parts , as our Senses , by Reason of their smalness , cannot discern . Wherefore it is most certain , that there are parts of Matter which cannot be discernd by themselves , tho' being joyn'd with others they can make up a sensible Body : This being a thing easily demonstrable by the growth of Bodies ; and is acknowledged by Divine PLATO in his Timaeus in these Words : Concerning these little Bodies , we are to conceive thus , that if they be taken singly by themselves , none of them , because of their Parvity , can be seen by us , whereas when many of them are joyned , their Bulk presently appears . VII . We are to Philosophize of Insensibile parts after one and the same manner . Wherefore we are to Philosophize alike of Insensible as of Sensible Parts . For as we own some Bodies to be compounded of Parts , actually distinct from each other , ( as we see small Dust in Stones , and filaments in Flesh ; ) so likewise it is consonant to Reason , to admit other parts of the same kind , which because of their Smalness cannot be perceived ; and their Analogy persuades us to Judge and Discourse of them both after the same manner : Seeing that without them , the Qualities and Operations of Bodies cannot be explained . For how can I apprehend the cause why Oil is more easily congeal'd than VVater , without conceiving the Particles of Oil to be hooked and Branchy ▪ which makes them more easily to cleave together , than those of VVater ? And that Water is more hard to congeal , because its Parts are slippery , and united together , as Eels are , as shall be said hereafter . And yet no Body ever discern'd either the Parts of Oil to be Branchy , or those of Water to be figured like Eels . And therefore it is evident that in Natural things , there must be Parts allowed , that are only discernible by the Understanding or Imagination . VIII . Insensible Parts are not therefore to be accounted Atoms or Indivisible Neither are we from hence to infer , that such Particles as these , are Atoms , that is , altogether Indivisible : For being Parts of Matter , they must need include Extension ; and it implies a Contradiction , that what is Extended should be Indivisible ; for every Extended Being , hath Parts distinct from each other , and consists of Divers Dimensions , which cannot be said of Atoms or Indivisibles : Neither can we conceive any Insensible Parts to be so solid , as not to be Naturally Divisible : Nor is any Body so compact , but that by a strong Motion it may be dissolved ; or if we should suppose this impossible to the Powers of Nature , yet we cannot deny God the Power to do it ; seeing there is nothing else required to the Divisibility of a Body , but its Extension , and that it be Subject to those Affections which constitute a Body , as hath been said before . IX . They are Figured . Moreover these Atoms are of several Figures ; now whatsoever is Figured , must have Parts , which Parts as they cleave together , whilst they are at Rest , so are they disjoyn'd again , whenever there is made an impulse upon them , strong enough to overcome their Rest . And this cannot but happen in that hurry , wherein the Particles of Bodies are continually tost to and fro . X. And are Indefinite●y Divisible . Wherefore we conclude that there are no Atoms , or Indivisible Parts of Matter , but only Bodies of an Indefinite Littleness , which are continuous , and by the interposition whereof other Bodies touch one another . For the Sensible Particles do not properly touch one another , but are rather like Baskets made of Twigs , which cannot be immediately united together , but borrow all their continuity from the Insensible Parts , by the various Inflexion and Disposition whereof they become Contiguous , as shall be hereafter shewn at large . CHAP. VI. Of the Three-fold kind of Matter , and that there are no more than Three Elements of the World. I. In Sciences we are to proceed from Simple things to compound . THe exactest Method of handling Sciences , as to my Judgment , is to deduce the thing under Examination from its first Original , and dillgently to search from what Principles it doth proceed . This is the common way of Philosophers , who do not begin their Treatises with Compounds , but Premising things that are simple , proceed from them , to those that are compounded , and the manner how they are made up of them . This is the way used by METAPHYSICIANS , who beginning with Entity in common , from thence come down to a Body , which is its Species , and afterwards divide it , into a Terrestrial and Celestial Body . And the same is observed by GEOMETRICIANS , who do not presently consider a Body as it consists of three Dimensions , but first of all Imagin an Indivisible Point , which by its course or the diffusing of it self makes a Line , which is a Length without Breadth . Afterwards they suppose this Line to move crosswise , whence ariseth an Extension bounded by Lines ; and to this they give the name of Surface , which is Length , and Breadth ▪ with out Profundity . And lastly from these multiplied ariseth a Body , extended in Length , Breadth and Profundity . II. God did not proceed thus in the Creation of the World. Which way of Teaching tho' it be very suitable for the Demonstration of Natural and Metaphysical Objects ; yet did not God make use of it in the Creation of the World. For he did not first produce an Entity in General , then a Body , and last of all Heaven , Earth , Plants , &c. Neither did he first constitute a Point , from the Motion whereof a Line might arise , from Lines a Surface , and from multiplied Surfaces , a Body . But tho' I own that the World in the first moment of its cr●ation was perfect , and that it was not increased by vicissitude of times , yet it will not be absurd for me to establish some Principles , whence we may suppose that Natural Things have been produc'd , tho' they were not in that precise manner created by God. Because those things are more clearly known by us , which are deduced from a Principle , and by a continual vicissitude are brought forth and encrease , than such as are consider'd in an absolute state of Perfection . III. Physicians do the same in their treating of Plants and Animals . Thus Physicians in order to their explaining of the Generation and growth of a Chicken , begin with the Egg , and shew what parts are daily framed therein , by the Incubation or brooding of the Hen. And so they who examine the nature of Plants , begin with their first Original and Propagation , and then proceed to the considering of them in their Sprouting , Growing , Blooming and bringing forth Fruit. For as ARISTOTLE saith in his First Book of a Commonwealth , he that takes a view of things in their First Rise , will best of all perceive the Truth of them . IV. The first thing suppos'd is , that at the Beginning the Parts of Matter were divided by Motion . Let us suppose therefore the Matter of the Universe to be put into Motion , and that it was divided by God into Parts , much of an Equal Bigness , not round ( because many round Bodies put together , touch one another only in a point , and consequently leave many Empty Spaces ) but into Parts of another Figure , and of a mean bigness between those that constitute the Heaven and the Stars , which we suppose to be whirl'd round about their own Centers ▪ V. The Original of the First and Second Element . This being suppos'd , it will be easily made out , how the Elements came to be ; for of whatsoever Figure we imagine the Parts of the World to have been , so they have but several Angles and Sid●s , it must follow that by running against one another , their Angles must by degrees have been worn away , and their Figure thereby chang'd to Roundness . For by an Angle we understand nothing else , but that Prominency which hinders a Body from being round ; which Angles being worn of , a Spherical Body must thence arise . For Bodies , whirld by various motions for a long time together , do at last become round , as appears in those things that are turned . And the parts of this Matter are called the Second Element . VI. The Matter of the First Element , fills the Spaces that are left between the foresaid small Round 〈◊〉 . And forasmuch as a Vacuum implies a Contradiction , and that all spaces are fill'd with Bodies , there must be some more subtil Matter to fill the intervals that are found between those small round Bodies , which is performed by those Particles , which like Shavings , are rub'd off by Motion from Bodies ; for they being very slender and flexible , easily accommodate themselves to the Figures of the Bodies they are contiguous to . Moreover by this Attrition or Rubbing against one another , they have obtained a very great degree of Swiftness ; so as that by the meer force of their Motion , they are further divided into innumerable Particles , and are sufficient to fill up all the little spaces left between the Globuli . VII . The Parts of the First Element are not of the same Bigness . Now tho' this Matter be very subtile , yet we must not think that all the parts thereof , are of the same smallness , as appears in Sawdust , or in Filings . Wherefore the lesser of those particles will be more easily moveable than the thicker and bigger ; and the Particles of the First Element will move more swiftly than those of the Second Element : For tho' they receive their Motion from these latter , yet because of the ways they must run through , their Motion must needs be accelerated : For whilst the Globuli of the Second Element pass through streight or right-on , and open ways , they thrust those through narrow and cross ways . And indeed we find by Experience that the narrowness of Passage conduceth much to swift Motion , as we find in a Bellows , whence the Air proceeds with great swiftness , by reason of the narrowness of its Nuzzle . VIII . The Rise of the Third Element . But tho' most parts of the Matter be Round , and that the Particles that are worn off from them , be such as I have now described , yet we must suppose that many parts of the Matter , having been bigger , and of more irregular Figures than the rest , it was more easy for them to join themselves with many others , than to become round ; and these are they that constitute the Third Element , which we may call the Element of the Earth , because the parts of it have little or no Motion , whereby they might change their situation with regard to one another ; in like manner as we may call the First , the Element of Fire , because of its subtilty , and the swift agitation of its Parts ; and the Second Element , that of Air , because its Parts are bigger , and less agitated than those of the First Element . IX . How it comes to pass that the Matter of the First Element , doth not encrease continually . But from this supposition , that the Matter of the First Element , did at first arise from the hitting together of the Globuli , one difficulty does arise , viz. that it seems to follow from hence , that this Matter ought to encrease continually , because the Globuli of the Second hitting one against another incessantly , must needs strike off some Particles from each other , and that consequently the Sun and fixt Stars , which consist of this Element , must be encreased continually by reason of a never ceasing affluence of new Matter . X. Answer . This Difficulty may be easily answer'd , by considering the mutual Conversion of the Elements into each other . For from the Matter of the First Element sometimes a thick Body is made , as may be seen in the Spots that grow about the Sun , and obscure some part of its light . For if we examine their first Original , we shall find that at the Beginning , they are very thin Bodies , which repel the impulse of the Particles of the First Element , which by running against them , cleave to them , and being condensed by the Motion of the Suns Substance , become big and Opake Bodies . And by this means the First Element , is turned into the Third , which being afterwards dissolved , becomes again the First Element by acquitting its former swift agitation , and by being divided into Particles of Indefinite Parvity . XI . The Number of the Elements . Wherefore being resolv'd to deviate from the Sentiments of the Antients , since we want other Latin Words whereby to express them , we will distinguish the Names of these Elements only by Numerals , and call them the First , Second and Third Element . XII . What the First , Second and Third Elements are . By the First Element , we understand with Des Cartes , a most subtil Matter very swiftly agitated , fluid , and keeping to no certain figure , but which suits it self to the Figure of those bodies that are about it . By the Second Element , we mean very small Globules , that is , Bodies exactly round and very solid , continually whirl'd about , and which do not only like the First Element , fill up the Pores of Bodies , but also constitute the Purest Substance of the Aether and Heaven . By the Third Element we understand a Matter consisting of thicker and Branchy Parts , full of Angles and unfit for Motion , of which the Earth , Water , Air , and all mixt Bodies do consist . XIII . The Definition of an Element in General . An Element therefore Generally taken , is a Formed Primordial Matter , whence the variety or difference of Bodies takes its rise . Or it is a simple Body , of which mixt Bodies are compounded , and into which they are resolv'd again at last . First , an Element is said to be a Matter Formed , b●●ause Elements were at first made out of Matter , by the Introduction of certain Modes into it . It is called Primordial , forasmuch as Elements are the Principles of mixt Bodies , not made of any other Bodies , as mixt Bodies are , but immediately produc'd from the Matter from which all variety of Bodies takes its rise , as proceeding only from the various Modification and conjunction of the Elements . XIV . These three Elements are sufficient for the explaining of all Natural things . It remains next to shew that these three Elements of the World , are sufficient to explain all natural effects whatsoever , and that therefore there is no need of feigning any other . This will appear if we consider the several kinds of things in the World , for according to their Diversity we are to settle the Distinction of Elements . And seeing all Bodies may be reduc'd to three General Heads , just so many Elements , and no more are we to look for in the World. Now Bodies are either lucid or shining , as are the Sun and fixt Stars : and these are made of the First Element ; or Transparent as are the Heavens , which transmit the Rays of the Sun and Stars ; and these do consist of the second Element : Or lastly , Dark and Opake , which reflect the Rays they receive from Lucid Bodies , such as are the Comets and Planets , and these consist of gross and corner'd parts , which as we have said , do constitute the third Element . XV. Why the Sun is called Lucid , and the Heaven Pellucid or Transparent . For it cannot be doubted but that the Sun and the fixt Stars are Lucid Bodies , as coming near the Nature of Flame , and exactly resembling all the Properties of Fire , and therefore they cannot consist of any other Matter save that of the first Element : And the Heavens are said to be Transparent , and compacted of the Globuli of the Second Element , forasmuch as by means of them they transmit the Light to us . Now we must not imagine that these Globuli or Pellets of the second Element , are immediately joyn'd together , since that implies a Contradiction ; but the subtil Matter runs between them , and takes up the places they themselves cannot fill because of their roundness . The same thing being also to be observed in other Bodies which reflect the Light , for a great quantity of the Matter of the first Element doth always pierce and permeate the Earth and the Planets . XVI . Things compounded of the Elements . Wherefore three sorts of Bodies are chiefly to be consider'd in the World ; the Sun and the Stars which consist of one only kind of Matter ; the Heaven which includes both the first and second Element ; and the last or lowest , which contains all the three kinds of Matter , as the Planets and Comets . XVII . Objection . You will say , it may be , that it is an Argument of Rashness and Profaneness to set down another order of conceiving of things , than God himself hath observed in the making of them ; and that we cannot look upon things to be the effect of certain feigned Principles of our own which we know were created by the sole Command and will of God. XVIII . Solution . I answer , that it is no Argument at all of either Rashness or Profaneness , for a Man to distribute those things into many parts , which he cannot conceive all together , and to follow such an order of conceiving of things , as is consentaneous to the Laws of Nature establisht by God , tho' he knows that God did not make use of this Order in the Creation of things . For otherwise not only all Philosophers , but Divines also would be found blameworthy . For do not Divines divide Gods Decrees into many , which notwithstanding in God are only one most simple act ? They link divers Decrees in a certain order together , and suppose some of them to have been before , and others after , tho' indeed there never was any such Series or Connexion of Decrees in God. But who has ever undertaken to blame them for this ? Except it be some of those , who that they may seem to be wise , will not stick to find fault with Heaven it self . Now if this may be done without blame in the Decrees of God , which are God himself ; much more will it be lawful for us to conceive the Universe of Bodily things ( which is different and diverse from God , and made by him in the space of six days ) as successively springing from certain Elements by the wise and Powerful disposing of God. And the rather , because if God had will'd to produce this World successively from Elements , doubtless he might have done it , without any prejudice to his Power or Wisdom . XIX . The Elemen●s of the Chym●sts . The Chymists , accounted by some the only Philosophers , and Natures Secretaries , hold five Principles , Mercury , Sulphur , Salt , Caput Mor tuum or Dead Earth , and Phlegm ; there beingscarcely any Body out of which they cannot produce these several Natures , as they tell us . For that by the means of Fire ▪ or some other Analogous Agent , they can so resolve things , that by separating the parts , whereof they were compounded , they can discern their several Forms and Quantities . Wherefore the more subtil part which they draw off by Fire , they call Mercury , Spirit or Aqua vitae ; the Thicker and Fatter part they call Oil and Sulphur ; and the most fixed , which is last of all extracted , they name Salt. Besides these there remains behind a certain terrestrial matter , being the dregs or dross of the Resolved Body , which they term the Caput Mortuum , or Damned Earth ; and a watry and insipid liquor they call Phlegme . XX. The Principles of the Chymists cannot be said to be first Elements . These Principles of the Chymists , cannot be said to be the First Elements of things , as not being those things into which Bodies are resolv'd last of all , but such as proceed from them by a prior Resolution , after which they may be yet further resolv'd into much more simple parts , as the most experienced Chymists do confess . It hath been prov'd by a late Experiment , that a thick Oil distill'd from various Plants , hath been so rectified by many reiterated distillations , that at every Rectification an equal Portion of Common Water hath been added to it : And after many Distillations , they have got from it a quantity of Water , impregnated wit●h much volatile Salt , besides a confiderable portion of Earth , so that at last only a little thin Oil remained , of a great many ounces ; which by more Rectifications might have been wholly resolve● into Phlegme , Volatile Salt and Earth . So that neither the Burning Spirit of Wine , nor Oil it self , nor Sulphur , can be reckon'd amongst the first Principles of things , as being only secondary Concretions , which depend on such as are more simple . XXI . The Extracted Salts , are not simple . Neither can I persuade my self that the Salts extracted out of the Ashes of Plants , &c. are so simple as not to consist of some thing more simple than themselves . For when I consider that Sea-fish , which for a great part , are nourished with Salt-water , have not the least taste of Salt ; and on the contrary that Men and Beasts , who do not so much feed on Salt Things , do void Salt Urine , Sweat , and sometimes Spittle too , I am very apt to persuade my self that Salt it self is not the first conc●etion of Parts , but only a secondary , and which depends only on a Mechanical contexture . XXII . The Chymists do not , in this their Enumeration , comprehend all Principles . These Principles therefore , notwithstanding they are so highly valued by the Chymists , do not comprehend all things out of which Bodies are compounded : For tho' they extract Waters by their Distillations , that is , the most slippery and flexible parts of Bodies , which they ascribe to Mercury : Oils also , that is , those Branch-like Parts that do easily entangle and hang together , which they attribute to Sulphur ; and the remaining very thin parts , that are easily mixt with Water , and incorporate with it , which they refer to Salt : Yet all this while they make not the least mention of that subtil Matter , whose Existence we have here owned and asserted , and which is of absolute necessity to the composition of most natural things . XXIII . The Parts of Bodies are greatly changed by Distillation . Moreover , who would own those things to be the Principles of Natural Bodies , which are quite changed , and have got another nature ? For Fire being extreamly active , cannot extract the parts of any compound , without violently agitating , and dividing them into less Parts , which Division cannot happen without a change of their Figure , and by consequence of their Nature . Now Experience proves that the nature of things is alter'd by Distillation ; because that after all the Parts into which a mixt Body can be resolv'd , are put together again , that which thence ariseth is not the same with that it was before , but is quite of another Nature . XXIV . According to the opinion of the Chymists there are more than five Elements . We may add this also , that the Chymists deceive themselves by making only five Elements ; because according to the Method and way whereby they have found out these , they may procure a vast greater number of Elements , yea such as the Mind of Man cannot reach . For the same Mercury is not drawn from all Bodies ; nor the same Sulphur , seeing that which is drawn from Wine is very different from that they get out of Oil. Neither is it the same Salt they extract from all Plants , since that of the Ash hath a Caustick Virtue , which the Salt of Oak hath not . Wherefore we must conclude that Mercury , Sulphur and Salt are no Elements , because Elements are simple , and common to all mixt Bodies . XXV . The Chymical Principles presuppose a certain Texture of Parts . Moreover it is very probable that these five Principles do only differ by the Texture of their parts ; neither do I think that Oil differs from Spirit , save only in this , that the Parts of Oil , are by a long Fermentation , divided into smaller parts , and furnisht with lesser branches , whereby they are less apt to adhere to Bodies , and with more ease flee away from them . That it is so indeed , we may conclude from this noted Experiment , that from Plants and Juices much Oil is got before Fermentation , but very little Spirit ; whereas if you distill them after Fermentation , you shall have much Spirit , but a very small quantity of Oil. CHAP. VII . There are no Substantial Forms really distinct from Bodies . I. What the Peripaticks understand by substantial Forms . THey that follow ARISTOTLE , or rather his Interpreters , do all agree in this , that there are Substantial Forms , which together with the Matter constitute one Compound . By the name Substantial Form , they understand a certain Substance united to matter , which together with it constitutes a meer Bodily compound . Tho' both these parts are Bodily and Divisible , yet they assign a difference between them ; as that the Form is more a Substance than the Matter , because they consider it as Subsisting by it self , and is therefore by them called Actus or Actuality ; whereas they will have the Matter to be only Potentiality , which is perfected by the Form , from which also it derives all its Existency . Upon which account Matter is frequently call'd by ARISTOTLE a Non-Entity , a Non-Quiddity , and Non-Quality . II. There is nothing new in Nature which is not made by God. Tho' this Opinion be commonly approv'd of in Schools , and that they are accounted no less than Hereticks that reject it , yet Reason obligeth us to depart from it , and publickly to prosess that Substantial Forms are of no use in Natural Philosophy for the explaining of the Principles or causes of natural things ; yea , that all Natural Effects can better be explained without them . And the chief reason that persuades us to explode these Substantial Forms , is from their own nature . For there can be no substance that begins to be in the Nature of Things , which is not created by God ; forasmuch as every thing , both as to its Essence and Existence depends on him ; so that if there be any thing that begins to be , we may truly say of it , that it is produc'd by God : But many Substantial Forms according to them do daily exist anew , and yet are not suppos'd to be created of God by those that admit them ; therefore there is no ground at all for them . III. Substantial Forms can neither be produc'd nor annihilated by a created Agent . To confirm this ; what becomes of Substantial Forms , when they are separated from Matter ? Do they still continue , or do they perish ? If they continue , whither do they betake themselves ? What is their Virtue , or how do they work , being separate from Matter ? If they perish , as all do own , by what force are they destroy'd or annihilated ? Since Annihilation , as well as Creation , belongs to God alone ; and that it is only the Work of an Infinite Agent , to reduce an Existing Thing to Nothing ? For every single thing , always continues in the same state , except it be alter'd by an External Principle ; now it is repugnant to the Goodness of the Creator to produce things , that have in themselves the Principle of their own Destruction . IV. There is no instance in Nature of Annihilation . And after all , none of the Asserters of Substantial Forms , can produce one single Instance that ever any Substance was wholly destroy'd ; but will of its being chang'd into something else , and taking a new Figure . 'T is for this cause only that the Rational Soul is said to be immediately created by God , because it is a Substance . For a Material Accident , according to their Opinion , is not Created , but produc'd from the Potentiality of the Matter , after the manner of Substantial Forms ; wherefore , since these Substantial Forms are not suppos'd to be created , neither ought we to think them to deserve the name of Substance . V. These Forms being obscure nothing can be proved by them . This may also be proved another way . For Substantial Forms were only invented by the Peripateticks , to make out the Causes of all Actions , that are found in Natural Things , whereof they are the Principles , from whence they do proceed : But these Forms are of no use to the explaining of all these effects ; seeing that they themselves own them to be hidden , and that their virtues are not known to them . For whatsoever is clearly perceiv'd in Bodies , the same according to them is deny'd to be the Form , which they say lies hid in Bodies , and which they own to be imperceptible by the Mind it self . Wherefore when they say that some Action proceeds from Substantial Forms , they may well be reproach'd for having recourse to a Principle of Actions , the nature whereof they do not conceive , and by consequence neither can any thing of certainty be gather'd from it : Which alone , in my Judgment , is sufficient to reject them altogether , forasmuch as nothing is to be admitted in Philosophy , which is not clearly and distinctly perceived and known . For what can be more unworthy of a Philosopher , than to make those the Principles of Bodily Things , which he can neither explain by Definition , nor demonstrate by Experience , nor conceive in his Mind ? VI. Substantial Forms the Refuge of Ignorance . Would you take him for a Philosopher , who being asked about the Nature of Fire and Water , should tell you that Fire is Fire , and Water , Water ? For is it not much the same thing , to say that Fire and Water are such by their Substantial Forms ? Or would you think him to be an Interpreter of Nature , who being demanded about the Phases , or Appearances of the Moon or Venus , and the Principles of the Stars , would answer , that they proceed from Forms , as from their Inward Principles ? What is this but to call all things by one name , and comprehend them under one and the same Notion ? VII . By admitting Material Forms ; it may be question'd whether the Rational Soul be not of the same Nature . But you 'l say , it is dangerous to reject all Substantial Forms , forasmuch as this may be an occasion of doubting , whether there be any Substantial Form in Man , because we see the same operations in Brutes , which are perform'd in us . I answer , that the contrary ought rather to be inferr'd from hence ; for by admitting Bodily Substantial Forms , and such as are subject to Death , it may doubted , whether such Forms be not also in us , as they hold to be in Living Creatures ; whereas by utterly rejecting them , we extol the Dignity of Souls , by declaring them alone to be Substantial Forms , and that all the rest consist only in the Motion of the Animal Spirits , Configuration of Parts , &c. as shall hereafter be declared more at large . VIII . The Soul of Man being a Substantial Form , doth not prove that there are other Substantial Forms . But the Soul of Man being a Substantial Form , cannot be an Argument to prove other Substantial Forms ; because the Soul of Man is a Spirit , wholly distinct from Matter ; whereas other Forms are all of them Material , and consequently extended : whence we must conclude that they are Modes of Matter ; or if any of them be Substances , they must be Bodies of a particular Nature , which united to other Bodies , constitute Natural Compounds . IX . Neither did Aristotle ever own them . Wherefore the Schoolmen certainly differ from ARISTOTLE , when they assert the Forms of Natural Beings to be Substantial . He indeed owns the Form to be 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 , but by this word he doth not mean Substance , which belongs to the General Nature of Body ; but Essence , which relates to the Special Nature of a Determinate Body . As for example , the Form or shape of Apollo , is of the Essence of the Statue whereby Apollo is represented , but yet is not of the Substauce of it , as the Stone or Wood is of which it is made . X. An Objection fetch'd from the Distinction of Living Creatures . But they will urge further , and say , that Brute Animals differ amongst themselves , but they cannot differ by the Matter , because that is the same in all viz. a thing extended in Length , Breadth , and Depth . Therefore there must be a Form by which they may be distinguisht from one another . The Major is proved from Scripture , which saith that God created the Living Creatures according to their kinds , and the Fowl of the Heaven according to their kind . XI . Solution . I answer , that we freely grant all this . For the names of Genus or Species do not always denote Substantial Differences , but sometimes only Accidental ones : And this way Animals do differ , who are differently disposed and moved ; much in the same manner as Clocks may be said to be distinguisht , because they have various Motions according to the different ways after which they are made . For not only Substances differ by Species or by Genus , but also Modes and Accidents ; for a Round Figure doth no less differ specifically from a Square , than Beasts and Fowl do ; and yet no body will be so senseless to assert , that those Figures differ by Substantial Forms ; since neither of them include any thing of Substance . And so likewise Beasts and Fowl are said to differ , because Matter is variously dispos'd and modified in them . XII . Another Objection drawn from the Difference o● Bodies . You will say that there are many Bodies in the Universe which do essentially differ , as Honey , and Wormwood ; and that this Essential Difference cannot proceed from any thing , but from Substantial Forms ; seeing that the Accidents that are in Honey and Wormwood , as to their Figure or Disposition of Parts , may be changed , whilst the Honey and Wormwood still continue the same . XIII . Solution of the Difficulty . I answer that Honey is constituted such as it is by its Form , and so essentially differs from Wormwood : But that this Form is a Substance I utterly deny , because the difference of these two , is only from the different configuration , situation , &c. of their Parts . For tho' it be accidental to Matter in general , to have the configuration of the Parts of Honey or Wormwood ; yet is it essential to Honey and VVormwood , to have such Modifications , to make them such Bodies . But of this more hereafter . CHAP. VIII . That there are no Qualities , or real Accidents distinct from Substance . I. What the Peripateticks Understand by Accidents . THe safest way to arrive to the knowledg of those things we enquire after , is to separate them from one another , and by this means distinguish what is obscure , from what is clear in them . But in the Observation of this Rule , we must have a care not to encrease the number of Objects , or to assign Existence to such things , which indeed cannot exist . Which some seem to have done by distinguishing Qualities and Accidents from Substances , and taking them for Real Entities , having a distinct Nature from the Subjects in which they are found . For they have defined them to be Things adventitious to Subjects , and that are by Nature distinguisht from them . And will have their Essence to consist not in an Actual , but Aptitudinal inherence , to shew that Accidents may exist separate from their Subjects . II. They Confound Substance with Accidents . But certainly they are in a great mistake , seeing that they confound the notion of an Accident with that of Substance , whatever they may say to the contrary . For every thing that is real involves an Aptitude to exist , and therefore is a Substance ; seeing by a Substance nothing else can be understood , but a Thing , which stands in need of the Concourse of God only to exist ; which how truly it agrees to an Accident , no body will deny , that owns an Accident to be something Real , and that it can exist separate from its Subject . Moreover , whatsoever is evidently and distinctly known by us , the same is true : But I clearly understand an Accident to be a real thing , and that it can exist independently of its Subject ; Therefore an Accident is to be called a Substance ; forasmuch as nothing else is contained in the Conception of a Substance . For no stronger Argument can be alledged to prove that two Things are the same , than that they have one and the same Definition . III. If Accidents be Real Entities the● may exist by themselves . But you will say , that A●cidents are very weak Entities , which stand in need of a Subject to support them , and that therefore they do not deserve the name of Substance . If this Answer were sufficient , it might as well be said that the Animal Spirits , and all insensible Particles of Bodies , ought to be reckon'd amongst Accidents , because they also want a Subject to support them , and from whence they have their permanency . It is sufficient to the nature of a Substance , that it be an Entity fit or apt to exist . Now forasmuch as Natural Accidents , which ARISTOTLE defines in his first Chapter of Praedicaments , are such Entities , and that Existence is no where to be found but in those Entities , we may well say that they subsist of themselves . IV. A Real Accident is a Substance , if the Definition of Substance agrees with it . And whereas they say that Accidents cannot naturally exist separate from Matter , but only by the Divine Power ; this is nothing to the Purpose ; for Gods Power doth not destroy the Nature of things , nor impart any new thing to them . Wherefore , if every thing that can Naturally be separated from its Subject be a Substance , then that also which by the Almighty Power of God can be without a Subject , may as well deserve the name of a Substance . And as to what they say that Accidents separated from their Subjects , do by a natural propensity require to be restored to them again , neither will this do them any service at all : For as a Bodily Substantial Form , which supernaturally can exist separate from its Subject , whence it is brought forth , doth not therefore cease to be a Substance , because of its natural propensity to be united to Matter ; so neither doth an Accident , that admits the Definition of a Substance , cease to have the Nature of a Substance , tho' by a Natural Propensity it requires to be placed in a Subject . Neither will this Exigence ever be able to hinder an Accident from being look'd upon as something Subsisting , which is sufficient to constitute the Nature of a Substance . V. Real Accidents are useless in Natural Philosophy . I cannot imagin why the Peripateticks take so much pains to introduce Accidents into the VVorld , when if there were any such , they could not be perceiv'd by any of our Senses : For every Sensation is perform'd by Contact ; now nothing but the Superficies of Bodies can be toucht ; and that Surface which is touched , is not a Real Accident , as they falsly imagine , but only the Mode of a Substance , as consider'd without Profundity . But they will say that Real Accidents are to be admitted in order to the explaining of Sensation : But neither is there any Necessity for this ; since nothing is requir'd to the moving of our Senses , besides the variously disposed Superficies of Objects : For we may easily understand how from the different Magnitude , Figure and Motion of the Particles of one Substance , divers local Motions may be produc'd in another : But we cannot conceive , how by them any such thing should be made as a Real Accident is , that hath power to produce local Motions in other Bodies . VI. This is illustrated by the Example of a Watch and Beaten Glass . The thing will become more evident by an Example : What is it in a VVatch that measures the hours ? Is it any Faculty or Power distinct from the VVatch it self ? Certainly 't is nothing besides the Magnitude of the Parts , the Fabrick of the VVheels , the Figure of the Spring , and other Mechanical aff●ctions that produce all those certain and constant Motions . Is there any virtue superadded to beaten Glass , which wounds the Membrans of the Guts , and makes it Poison ? Not at all : For the same Glass being ground to a very fine Powder may be taken into the Body without any danger at all ; and the Power in Beaten Glass of hurting the Bowels proceeds only from the Firmity or hardness of its Parts , and the Figure of them , not from any Occult Quality , nor from a Faculty distinct from it , proceeding from the Glass it self . VII . Whatsoever exists is Substance , not Acciden●s . Real Qualities therefore , as they call them , are not to be admitted by a Natural Philosopher , as being repugnant to sound Philosophy , and cannot be understood , even of those , who will needs have them distinct from their Subjects as if they were Real Entities . For who could ever conceive a thing to be distinct from another , in which it is , and yet to have no Existence but what is dependent upon it ? For every thing hath its own proper Existence , and whatsoever hath Existence , is without our thinking , in the nature of things , and therefore is no Accident . It seems a contradiction in Terms , to say that a thing exists , and yet wholly stands in need of the help of another that it may be ; as will be evident to him that minds his own Thoughts and Conceptions , rather than the Words that are tost in the Schools . VIII . Substance only , is an Entity . Accordingly ARISTOTLE himself Book 7. Metaph. chap. 10. expresly asserts that Substance alone doth properly deserve the name of Being , or Entity ; and that a Quality or Accident is not so much an Entity or Being , as the Entity of an Entity , or the Mode of a Being . For what is more contrary to Reason , than that that which hath no Essence of its own , but borrows its Existence from another , to which it is joined , should be reckon'd amongst Entities ? For as one thing only is said to be sound or Healthy , viz. an Animal ; and all other things are said only comparatively to be so , so far as they have any reference to the nature of an Animal ; so likewise we are to suppose , that Substance alone , according to propriety of Speech is an Entity , and all other things Analogically only , and with reference to that . Wherefore Quality in General is thus to be defined : A Mode of a Substance , or a certain adaptation of the Parts of a Body according to Motion , Situation , Figure , Magnitude and Rest . Forasmuch as from these a Body is denominated such like , and the Question What-like a thing is , may be fitly answer'd . IX . Wherein the Nature of Accidents or Modes doth consist . I am not ignorant that the Asserters of Real Qualities , do support their Opinion by ARISTOTLE'S Authority ; but I can never believe that so Great a Philosopher by Qualities did understand Real Accidents , but that thereby he only meant ( as far as can be gather'd from the Examples he alledgeth ) that there are divers dispositions of Parts in one Body , from what there are in another . In which sense I readily admit them , as supposing them only to consist in the Motion , Rest , Configuration and Situation of Parts . Thus Heat , for Example , is nothing distinct from the Fire , but is the very Substance of it , or the Flowing of its Particles , which penetrate and divide the Wood or any other Matter : So Figure is the Body it self , with regard to its being bounded by other Bodies from any further extension . So likewise Hunger , Thirst , Standing , and Sitting , are nothing else but various Affections or Mutations of a Body , which we consider as Modes , and not as Real Accidents , which may be separated from it . X. ●●ility , Soundness of Body and Beauty are m● any new things superadded to a Body . And the like we are to conclude concerning Agilaty , Health , Beauty , &c. For Agility is nothing else but a due Proportion of Spirits , and strength of the Nerves , that procure Bodily Motion . Health is nothing else , but a convenient Temperament of the Humors , and Aptness of the Members of the Body , in that state which Nature requires . Beauty is a fit disposition of Members and Colours , in a due Proportion to each other . And whosoever pretends Qualities to be any thing else , I dare aver that he doth not understand what he asserts ; seeing they cannot afford him any notice towards the apprehending of them , or any particular Idea concerning them . Nay he cannot so much as know wherein they consist , as shall be made evident hereafter in the case of Heaviness , Motion , and such like . Except he looks upon them as certain little Souls , under the notion of Spiritual Beings , which belong to Bodies , and perform the same in them , that our Souls perform in ours , when they move them . XI . Habits are no new things superadded to the Soul. A Modern Philosopher explains this point , by the Example of a Habit , which is defin'd to be an Adventitious Quality enabling the Subject to work with ease . Or , to use his Words ; The Vigor , Ability and Readiness of a Natural Faculty , acquird by repeated Acts , enabling one to do that better , more readily and certainly , which he hath several times tryed to do . For by frequent repeated Actions ( or by an Extraordinary vigor communicated by Gods Special Grace ) Habits are got , which are no new things superadded to our Soul , but only Modes , as when by frequent dancing , the Feet acquire a great degree of nimbleness , which Modifies the natural moving faculty . XII . The same thing shewed by the Example of a Watch. We see in a Watch that when the Wheels are but newly made , and rough , they move more slowly , which afterwards when the Surface of them has been worn and made smooth by long continued Motion , move more swiftly : Whence it is that frequently old Watches do Anticipate the time , and make shorter hours . But who will say that by this smoothing of the Wheels , any thing hath been added to them , besides a Modification ? since all the change that hath happened to them is , that the Wheels are become more smooth and polished , and their Motion swifter than it was before . And the same must be said of our Mind , when a Habit is added to it , that it can now understand that more readily and easily , which before it naturally did more slowly and difficultly , which plainly is nothing else but a Modification , and not any new thing added to our Understanding . XIII . If we admit Accidents to be Real , we shall not be able to know whether they belong to Matter of Spirit . Besides , if Accidents be Real , we shall never be able to know what Accidents belong to a Body , and what to a Spirit . For if Accidents have no Affinity with their Subjects , save this only , that they inhere in their Subjects , and yet are really distinct from them , we shall not be able to gather from the Perception of an Accident , whether the Substance in which it is , be Material or Spiritual ; that is , from the Colour , Figure and Magnitude we shall not be able to conclude that it is a Body rather than a Spirit ; neither shall we from Understanding and Willing , which are the Modes of a Spirit , be able to conclude , that the Substance endued with these Accidents is a Spirit ▪ No more than from the Nature of a Body to which the Soul is joined , we can conclude that the Mind is a Body , or the Body a Mind . XIV . Wherefore Qualities are to o● rejected . Forasmuch therefore as we are ignorant wherein the Nature of a Quality doth consist , and can frame no Idea of it , it is unbecoming a Philosopher to make use of that for the explication of Natural Effects , which can neither be understood , nor defin'd , nor made out by Experience . But why then , may some say , are these Qualities admitted by the Peripateticks ? Why , for no other reason but to mask and hide their own Ignorance , and that by fine words they may seem to know that , which indeed they do not . Accordingly if a Man ask them why such Medicaments purge , they will tell you , because of their Specifick Quality . Why doth the Loadstone draw Iron , or turns it self towards the Pole ? Because such is its Occult Quality . How comes it to pass that the Bones of Mermaids stop Bleeding ? Because they are endued with such a Quality . O excellent Philosophers ! who know that the Loadstone turns it self to the Poles , that Fire is Hot , that a Coal is Black , Honey sweet , Gall Bitter , because of inbred Qualities , but altogether unknown and conceal'd from us . XV. What we are to Understand by the Name of Accident . What are we to understand then by the word Accident , if they be not things distinct from the subject wherein they are ? I answer , It is that which happens to an extended Substance ; and therefore an Accident is not any thing Real , but a Mode depending on the Substance . Thus because we conceive the Roundness of a Piece of Wax , as having a dependent Existence on the Wax , we call it a Mode or an Accident . These Accidents have got several names , according to the several ways of our considering them ; for as Substances are affected and alter'd by them , we call them Modes ; as from them they are denominated such like , they are call'd Qualities , and when we only generally consider them as being in any Substance , we name them Attributes . XVI . An Accident or Mode cannot exist without its Subject . Whence it is evident that an Accident or Mode cannot exist without its Subject , nor pass from one Subject into another : for if that could be , it would follow , that when it was in the first Substance it did not absolutely depend on it , which implies a contradiction . CHAP. IX . What Intelligible Forms may be attributed to Natural things . I. Matter being Passive of it self , must have some Forms by which it may act . MAtter being of it self sluggish and idle , and Substantial Forms , and Real Accidents having been rejected by us , we must take careto furnish it with some Forms , that may give to it variety and Distinction . For since Matter is a Passive Principle , we are to procure it some Principles whereby it may be enabled to procure its effects : Which we shall easily meet with , if leaving the Schoolmen , we shall betake our selves to the Mathematicians , and build our Philosophy on their Principles . II. What are the Forms of an Extended Being . For having defin'd a Body to be a Substance extended in Length , Breadth , and Depth , it remains , that in Imitation of them we consider in it Magnitude , that i● , a determin'd Measure , which is call'd Continuous Quantity , or the number of its parts which is Discrete Quantity . Secondly , Figure , or the bounding Extremities of the Matter . Thirdly , its Situation , or diposal amongst other Bodies . Fourthly , its Motion , or change of Situation . Fifthly , its Rest , or abode in the same place . So that Quantity or Magnitude , Figure , Situation , Motion and Rest are the Intelligible Forms of all Bodies , whence their Rise , Nature or Essence , and Properties do depend . A material Form therefore is nothing else , but a Complexion of Affections and Modes , that are accommodate to a thing , and to its performing several Actions . Which Form in a sound sense may also be call'd Substantial , as being the Form of a Substance , that is , of the Matter , which it informs and perfects . For Forms give to all Natural Bodies Substance , and Essential Difference , and are the Springs of the operations of every thing , and therefore may well be called Substantial : They are contain●● in these Verses . Mind , Measure , Rest , and Motion , With Figure , and Position , To Matter join'd , the Causes be Of all what here below we see . III. From these the Distinction of things and their Actions do proceed . The variety of these Modes is the Mother of Different things , and their Conjunction the Dispositive Principle of all Actions ; which Art the Imitation of Nature abundantly teacheth us : For Artificial things do no otherwise differ from Natural , than that these for the curious contrivance , multiplicity and fitness of Organs do exceed the Former , and thereby witness the Transcendent excellence of the Artificer that made them . IV. The Conditions of true Forms . Now that these Modes are the Forms of Material things , will appear more clearly , by assigning those conditions to them , which belong to Forms . The First is , that the Form be proportionate to the Matter , so as to Determine and Define the same , which some call Actuating . The Second , That as there is but one and the same Matter of all Bodies ; so likewise there be but one common Form to them all , and such as shall affect them all alike . The Third , That as all do own Matter to be a thing Extended and Divisible ; so the Form also may be a thing known to all , and of the Existence whereof there can be no doubt . The Fourth , That the nature of it be so clearly defined , that the notion may be as distinct , as is that of the Matter which it affects and distinguisheth . For it is the nature of Principles to be so clear and evident , that when the mind heedfully considers them , it cannot question their Truth . V. These Conditions agree to Quantity , Motion , and the rest . Now that these I have mention'd are the true Forms of a Body , or that they impart a certain Mode of Being unto the Matter , will appear from hence , because all the foresaid conditions of Forms agree with them . As to the First , it is evident , that Matter derives its Distinction from Quantity , Motion , Figure , Situation and Rest : According as more or fewer of these are found in it . For the Diversity of Matter depends on Motion , without which there can be no separation of Parts . From Quantity it derives the Mode of its Extension . Figure furnisheth it with proportionate Extremities . To Situation it ows its position amongst other Bodies , whether upward or downward , forward or backward . Lastly , by Rest it continues in the same place , till by a stronger it be remov'd . VI. Magnitude Motion , &c. are common to all Bodies . As to the second condition it appears also that these five Forms are common to all Bodies , because they affect and diversifie not only Earthly , but also Heavenly Bodies . For Heavenly Bodies have their Magnitude , observe their distance and Situation , some of them being moved about their Axis , others about their own Center , and are bounded by Figures , which by the justling of other Bodies against them they change and vary . VII . Forms exist in Matter . And according to the Third Condition , these Forms are apparent to , and own'd by all , to be in Natural Things , as being plainly discernible by us . For who is so dull and stupid as not to discern the Magnitude , Figure and Motion that is in Bodies , which are so obvious to his Senses ? Neither in this do unlearned Men differ from those that are learned , since both own them alike ; only the Unlearned considering chiefly their outside , judg them to be Affections ; whereas the Learned searching more deeply into the Works of Nature , find them to consist in the insensible structure of the Parts , that by their smallness are not subject to our Senses . VIII . The Definitions of Forms are Evident . As to the Fourth Condition , we cannot question but that the Definitions of these Modes , are easily deducible from this discourse , and are obvious and evident , not only to our Senses and Reason , but experience also . IX . Tho' these forms are not Substantial ▪ yet are they Essential to some Bodies . Tho' these Principles be only Modes , and like Accidents are attributed to a Body generally taken , yet may they be said to be Essential to the Works of Nature . For it is no contradiction to say that the same thing may be Essential and Accidental in diverse respects : Thus Wisdom is Accidental to a Man , but Essential to a Wise Man. Sense is the Property of an Animal , and yet is a Genus , with respect to the Sight , Hearing , Smelling , &c. In like manner , tho' Quantity , Figure , Motion , Situation , and Rest happen to Matter in Common , yet this doth not hinder but that they may be Essential to some Portion of it . Thus it is Accidental to Iron to be terminated by several Figures , as to be Round , Square , Sharp , or Blunt ; whereas in a Knife the Figure constitutes its Form , and distinguisheth it from other things . For tho' Iron may be conceived without this or the other particular Figure , yet a Knife cannot be a Knife except it have such a determinate Magnitude , Figure , &c. So likewise Roundness is accidental to Wood , but is Essential to a Wooden Bowl . And in a Clock , Magnitude , Figure , Situation , the Motion of some parts , and the Rest of others , are accidental to the Brass or Iron , because without them they are still Brass or Iron ; but a Clock can never have that name , without them . X. The Difference of Bodies depends on the Modification of their Parts . So that the whole Difference of Bodies doth depend on the Modification of their Parts , which are distinguisht according to the variety of their Magnitude , Figure , &c. as their Identity or sameness consists in the agreement of those Modes , and their observing the same Proportion amongst themselves . Wherefore , tho' a live Man , and the Statue of a Man , be alike in outward appearance , yet cannot they be said to be the same , because besides the Soul , which is in a Living Man , there is also great diversity of Parts , not only as to their number , but in respect of their Magnitude , Figure , Connexion , Rest and Motion . XI . Objection , that the operations of Matter do not depend on these Accidents . But it will be objected , that these Modes cannot produce so many Effects , forasmuch as all Actions are attributed to the Subjects themselves , and not to the Accidents , which only operate by vertue of the Substance . XII . Answer . I answer , that we acknowled no other Subject , but Matter furnisht with Magnitude , Figure , &c. for Matter being passive , cannot operate , but by their efficacy . And tho' indeed Matter do not derive its Essence from these Modes , that is , tho' they do not make it to be a thing , yet do they cause it to be such a thing . Thus that a Pen is fit to write withal , and a Key proper to open a Lock , proceeds only from their Disposition , Figure , Motion , &c. for when these are taken away , they are no longer useful . Wherefore , Accidents do not operate , by Virtue of their Substance , as the Schools will have it ; but the Substance rather works , by a Vertue borrow'd from its Accidents . Thus diverse Weights are lifted up by a Beam , according to the Difference of its Situation : Neither would Iron cut , if it were not provided with a fit Figure and Magnitude . XIII . How hot water becomes cold . If you object that these Principles are not sufficient to explain all the Phaenomena of Nature , because it cannot be made out by them , how Warm Water grows Cold , forasmuch as this change cannot proceed from the Different Disposition of the Water . XIV . Answer . This change may very well be explain'd by our Modes , supposing Heat to be nothing else but a strong and various Agitation of Particles : For the Water by communicating its Heat to the Air and the Neighbouring Bodies , easily loseth it , except other succeed in the room of that which is lost ; for by this means the Water is at length depriv'd of its strong agitation , and consequently returns to its former coldness . XV. Natural Power consists in the Disposition of Parts Hence it is evident that the Powers of Bodies , or their Faculties of Acting , are nothing else but the Magnitude , Figure , Contexture , &c. of the Parts of Bodies : For by these all the effects we see in Nature are produced . XVI . The World is to be look'd upon as a Machine . The World therefore is to be consider'd as a wonderful , and most Artificially contriv'd Machine , not the parts of it taken severally , but as joined and orderly complicated together . For as in a VVatch we see many Motions performed only by the Contexture of its Parts and VVheels ; in like manner all the Agreement or Likeness and Difference of Bodies proceed from their Mechanical Affections , viz. Motion , Figure , Magnitude , &c. As for example the Power the Sun hath , of attenuating VVater into Vapors , of softning VVax , and Hardning of Clay , and of producing many other Effects , is not deriv'd from any new Entities added to it , or Distinct Qualities , but from its Heat only , which consists in the swift Motion of its Insensible Parts , which produceth several Effects , according to the different contexture of the Body it works upon . XVII . There are no more than two Principles of Natural things . It is evident from what hath been said , that there are only two Principles of Natural Things , viz. Matter , which is the same in all Bodies , and the Form whereby one Body differs from another ; since it is certain that Privation , which the Peripateticks add to the two foregoing Principles , doth not deserve that name , as being a Non-entity , from which consequently nothing can proceed . XVIII . Of the Affections of Bodies . Hitherto we have consider'd the Nature of a Body in General : We must next enquire into its Affections , which are nothing else but Qualities , Attributes and Modes , which agree to Bodies , according as they are said to be in this or the other state or condition ; such as are those which we are next to treat of , viz. Rarity , Density , Heaviness , and Lightness , &c. wherewith a Body is variously affected or indued . CHAP. X. What Rarefaction is , and how it is performed . I. Rarefaction cannot be performed without the entrance of new Matter . IT appears from what goes before , that Extension is something that is not distinct from Matter , and that the one cannot be encreased , but the other must be so likewise . Hence it follows , that in Rarefaction and Condensation the Constitutive Quantity of Bodies , is neither encreased nor diminished ; but only that in Rarefaction , the parts that were before United , are distended , so as some intervals are left between them , which are fill'd up by the entring in of some fluid and moveable Body ; as is manifest in a Spunge swell'd with VVater ; and that on the contrary in Condensation , the separated parts are more closely united , by expulsion of those Bodies that fill'd up the Intervals ; as appears in a Spunge out of which the VVater is squeez'd . II. What a loose and , what a close Body is . A Thin or Loose Body is that whose parts are intercepted by Spaces fill'd with some forein Matter , which afterwards may become a Close Body again by expulsion of the more subtil Matter , entred from without , by which means the parts come close together . Thus Boiling VVater is rarefied in a Pot over the Fire ; for we find that when it begins to boil , it swells up into Bubbles , which could not be , but by the entrance of some External Matter , causing them to swell and be extended : and the same is the case with VVater , when it is turned into a Vapour . III. An Objection rais'd from the Rarefaction of Water . You will say , that in this case of a Vapour we perceive indeed that Extension is encreas'd , but no access of any new Matter : Wherefore it is without ground to say that Rarefaction is performed by the addition of some other Body . IV. Answer . I answer , that in a Vapour there is no more Extension or Quantity perceived , than there was in the VVater before its Resolution , because in this change nothing else happens but a Solution , Division and Separation of those parts , which before were more closely joined together ; For he who at a distance beholds the Vapours that rise from boiling water , takes them to be a continuous Body ; but if he take a nearer view of them , he will find them to be nothing else , but a crowd of innumerable small Particles , which separate and come between many other Heterogeneous Bodies . Wherefore where we find any Body dilated , we must conclude that it is by the access of some new Matter . V. The Bodies which enter the Pores of Bodies are of the same mature with those that strike our Senses . But what kind of little Bodies are these , which enter the Pores of Rarified Bodies , and which are expell'd when they become close and hard again ? I answer that they are the same in Substance with those Bodies which are seen and felt by us ; save only that they are more subtil and fluid , and so are fit to penetrate and fill the Pores of other Bodies . For according to our Hypothesis , there are some Particles in the Air and other Bodies so subtil , as to be able to pierce Gold , Diamonds and the most Solid Bodies that are . VI. There are Bodies that are not perceptible by the Senses . You will say , that we do not find that the Pores are dilated in Rarefaction , nor that any New Bodies enter into them . But to this I answer , that all Bodies do not affect our Senses , by reason of their extream littleness . We know that a Vine in the Spring grows , and becomes extended to a further Length ; which Extension could not be , but by an addition of Bodies , which dilate and stretch out the Substance of the Vine . And yet no Man ever perceiv'd these Bodies . We never saw the Air , and yet know that it is extended throughout the whole World. Wherefore neither in Rarefaction are we to deny Bodies to enter into the Pores , because we do not see them ; but are to judge of what happens in these little Bodies , by what we see happens in the greater . VI. Why Metals are not rarefied . From this Explication of Rarefaction it is evident , why Metals and other Hard Bodies are not rarified without difficulty , but soft Bodies very easily , because the parts of them are readily separated and admit other Bodies , whereas hard Bodies , as Iron , &c. are not without great violence dissolved , and by that means hinder other Bodies from entring between their parts , wherein the Nature of Rarefaction doth consist . VIII . It is not necessary that all the Parts of Matter be rarefied . You 'l say that in Rarefaction not only that Body is rarefied whose Pores are dilated ; but also all the subtil Matter that enters them , which cannot be without the introduction of other Bodies , and these again by the Introduction of others , and so to infinity , which is not to be admitted in Natural Causes . IX . There are some Particles that do not admit Rarefaction . I answer , there is no inconvenience to say that Bodies that have Pores , become rarefied by the Intromission of others , and these again by the Intromission of other lesser Bodies , so we do but admit that there are some Bodies , which because they have no Pores cannot receive other Bodies , and that there are such is not to be doubted , especially by them who hold Quantity to be indefinitely extended : For they must acknowledge that the Parts of Matter may by Division be made so small , that they cannot be further divided but by our Thought . X. The Distinction between a Pure and a Rarefied Body . You 'l say that the more loose or Rarefied a Body is , the more Pure it is also ; as the Air is , when it is free from Clouds and Vapours : But now the Purer any Body is , the less it admits the mixture of any External Bodies ; therefore Rarefaction is not made by the Introduction of other Bodies . XI . Answer . The Major of this Argument is to be deny'd ; for Pure and Rarefied are not one and the same thing : That is Pure which is free from any mixture of forein Matter : As the Air is said to be pure , when it is not obscur'd by Clouds or Exhalations . But a loose or Rarified Body involves the mixture of External Bodies , and cannot be understoood without it ; as a Spunge that is swell'd with the Intromission of Water . XII . Fire is the ordinary Cause of the Rarefaction of Bodies , whether they be liquid or solid . The ordinary Cause of Rarefaction is Fire ; for the subtil Particles whereof it consists , being in continual Motion , easily enter the Pores of other Bodies , and dilate them . Hence it comes to pass that Water , which hath long boiled over the Fire , is more easily congeal'd than cold Water newly taken out of a Well or River , because the most subtil parts of it , which by their Agitation and Motion hinder'd Congelation , are evaporated in the Boiling . Neither are liquors only , but Metals , and other solid Bodies somewhat distended by Heat . Thus we find that melted Metals swell somewhat ; and that it is common with thread dipt in Brimstone to cut off Glases , because the Parts of Glass being put in Motion by Heat , require a larger Room , which they cannot obtain , without driving away the parts that are continuous to them . XIII . The first Corollary from what hath been said before . From what hath been said it is evident First , that the Rarefaction of Air , Smoak , Vapor and such like Bodies , are nothing else but a separation of the Terrestrial Particles , caused by a swift Motion , and the ingress of New Caelestial matter into the Spaces left by them . And that the Condensation of them , consists in a more intimate union of the said Particles , caused by the decrease of Motion or Heat , the Intervals whereby they , were separated growing lesser , or being taken away , which when ever it happens , the Body thereby becomes so close and compact , that it cannot be made closer . XIV . The Second Corollary . Secondly , we may infer hence that a greater or less Extension in Bodies that are rarefied and condensed , doth not belong to the Essence of a Body , but is only a new Modification of it , which supposeth a change of Figure , and the presence of another Body filling the Pores of it . CHAP. XI . Concerning the Heaviness and Lightness of Bodies . I. What Gravity and Levity is . HEaviness and Lightness are the Qualities of Bodies with respect to their aptness to move upwards and downwards , in the Sphere of their Gravitation . Where by the name of Aptness , we are not to understand any Inclination or Active Principle , but only such a disposition of Parts which is capable of receiving the force of Heaviness or Lightness . And by the Sphere of Gravitation , I understand the whole space comprehended between the Center , or that which is lookt upon to be the middle , and the uttermost bounds of the cause of depression . Which Sphere is not only to be fixed about the Earth , but also about the other Planets , which being much of the same nature with our Earth , it follows , that the union of their Parts proceeds from the same or a like cause to that which keeps the Parts of the Earth together . II. The opinion of the Peripateticks rejected . The Peripateticks hold Heaviness and Lightness to be innate Qualities , proceeding from the Form of Bodies , for their Conservation . Accordingly they say that heavy things tend downwards , from the foresaid Appetite they have to be preserved in the Center , and so be moved by a certain Law of Nature , whereby all things are disposed in their proper places , or by a Motion imprest by the Author of Nature . But this Opinion is grounded on a false Hypothesis . For , First it supposeth the Earth to be the Center of the VVorld . Secondly , that Bodies that are put in Motion tend to Rest , tho' it be certain that nothing tends to its own destruction . Thirdly , that Heavy Bodies are preserved in the Center . Fourthly , that there is an Appetite or desire of this Preservation in inanimate things , when it is apparent that a desire is only competible to living Creatures . III. The opinion of Gassendus rejected . Others , amongst whom is GASSENDUS , hold that heavy things tend downwards by the Magnetick Virtue ▪ of the Earth , which draws them down to it . But this opinion also is built on a false supposition , in that in the First place it takes for granted an attractive Motion . Secondly , in that it supposeth the Loadstone to draw Iron to it , by its out-flowing Particles , which is not so , as will appear hereafter when we come to speak of Magnetical Operations . Thirdly , the Magnetick Virtue is communicated by the Poles , and Lines parallel to the Poles ; whence it must follow , that the greatest Gravitation would be under the Poles , or near them , less in the intermediate places , and least or none at all under the Aequator . Fourthly , a common Loadstone has greater force , than the Earth it self , at least with us ; whence it must follow , that it would be of greater strength also to the drawing of Heavy Bodies downwards ; and then a piece of Iron cast upwards , would not in a right Line descend to the Earth , but towards the Magnet . IV. Des Cartes his opinion concerning the Heaviness of Bodies explained . The Third opinion is that of Des Cartes , who holds that Heavy Bodies are driven downwards by the Caelestial Matter . For the better understanding of which , we must in a few words explain his Hypothesis concerning the Diurnal Motion of the Earth . He supposeth therefore the Earth together with the Atmosphere to be pois'd in the midst of a little Vortex , which is whirld round from VVest to East ; whence it necessarily follows by the Rules of Motion , that the Earth hanging in this Fluid Body , must be whirld about with the same motion , by the Heavenly matter running against its Pores : yet so as that the Earth in its Motion is not separated from the Fluid Body that compasseth it , but as it were swims in it . To illustrate this , let us suppose a VVooden Bowl in the midst of a Vessel with VVater , if any one make the VVater whirl round , that is , in the Circumference or near the sides of the Vessel , it is notorious that the Bowl will turn round likewise , by the Particles of VVater , that dash against the outside of it ; and in like manner , is the Earth with the Atmosphere , Whirld about by the Caelestial circumfluent matter , not by any motion of its own . V. The force of the Caelestial matter drives heavy things downwards . And forasmuch as the Caelestial matter being very solid and agitated , hath more agitation in it , than is required to the whirling about of the Earth , and is hindred by the Earth from continuing its motion in Right Lines ; what will follow hereupon ? It is evident from the Laws of Motion , that its Motion cannot perish , and therefore will persue its course , what way it can best ; that is , it will have a Power of rebounding upwards . Now we know that nothing can move upwards except something move Downwards at the same time ; and accordingly that will move downwards , which hath not so strong a force of Agitation , which is the case of all Earthly Bodies , except something else should intervene and hinder it . VI. An Example taken from a Vessel fill'd with various matter . Any one may Experience this by filling some round Vessel with small leaden Bullets , and amongst them , some pieces of VVood , or any other Matter lighter than Lead : If this Vessel be whirld round swiftly about its Center , all the pieces of Wood which have less Agitation will be driven to the Middle by the Leaden Bullets , which with greater force recede from the Center of their Motion . VII . Heavy things do not tend downwards of themselves but are driven down . The same was lately experimentally demonstrated by a Mathematician at Paris , in a Vessel with VVater agitated , into which if the Powder of Sealing-wax be cast , the little Particles thereof will be seen driven towards the sides of the Vessel , for that by reason of their roughness they are easily carried that way by the strong agitation of the VVater . But when that agitation begins to cease , and the Particles of the Water are more softly moved , this Dust or Powder is driven to the midst . The Cause whereof is this , because as long as any Agitation is continued in the Water , its parts endeavour to recede from the Center , in which recess they force the particles of VVax towards the Center , and as it were appoint their place to them . Whence it appears , that Bodies are not of themselves carried , but are driven downwards by the Matter that surrounds them . VIII . A particular Explication of the Heaviness of Bodies . But to the end that the Action of the subtil Matter may be more distinctly perceived , let us imagine all that is included in the Circle ABCD to be a Mass consisting of the Earth , VVater and Air , the Center whereof is E , where the little Circle FGHI represents the Earth . Then let us imagine this whole Mass to be divided into many Pyramids , which with their Extremities reach to the Center , one whereof let be AEB . Having suppos'd this , we shall find first , that tho' all the several parts , which make up so many Pyramids , strive to withdraw from the Center E , yet can they not recede all at once , because there is no empty space about that Mass which they constitute , whither they might retire , and the subtil Matter hinders them from moving out of their place . Moreover we shall find that not one of these Pyramids , by Example , AEB , can recede whole and entire , enlarging it self in its extremity AB , and driving away from it the adjoyning matter , and making it to come closer to the Center : Because the Pyramids , which surround the Pyramid AEB , do with a like endeavour recede from the same Center , and for which they have no less force , than the Pyramid AEB . But if we suppose some Terrestrial Body , as L. in the Pyramid AEB . without any in the Neighbouring Pyramids ; we shall easily conceive , that it will have less force to recede from the Center , than the others , that are about it , by how much the Body L hath less force than the subtil Matter , whose place it takes up . Whence we must conclude that the Matter of some of the Pyramids will recede from the Center , and drive the Body L nearer to it , after the same manner , as they who hold all Bodies to be Heavy , suppose the Water to lift up a piece of Cork , and force it to the Surface of it . IX . Wherein the Heaviness of Earthly Bodies doth consist . The Heaviness therefore of Earthly Bodies consists in this , that the Globuli of the Coelestial Matter , being whirld about in their Vortices , endeavour continually to recede from their Centers , about which they are turn'd ; but forasmuch as they cannot exert this their strife and Propension , except in their mounting upwards , they thrust down other Bodies into whose place they may succeed : Wherefore they must needs at the same time depress the Particles of Earthly Bodies that are in the Air , as well because of their Resistance , as because of the want of Coelestial matter in their Pores ; both which hinder the Earthly Particles from having so great a Propension of receding from the Center of the Earth , as the Heavenly matter that every way surrounds them , hath . Wherefore the Lightness of the Coelestial Matter is nothing else but the force or strife it hath to recede from the Earth ; as the Heaviness of the parts of the Earth consists in their being such , that this highly agitated Matter exerts its power upon them in thrusting of them downwards , X. By the name of Heavenly matter we are also to understand the First Element . When it is said , that the Heaviness of Bodies is caused by the Heavenly matter , we do not only understand the Globuli of the Second Element , but also the Matter of the First mixed with it : For this being extreamly agitated , exceeds the Matter of the second Element in the force it has to drive Bodies downwards . Neither are the Particles of the Air to be rejected from having any share in this performance , seeing that they accompany them in their Course , and being joyn'd with the Globuli of the second Element , exert their force , and do not a little conduce to the driving down of Bodies . XI . The Cause of the Descent of Heavy Bodies is Twofold . We may therefore alledge a double Cause of the Descent of Heavy Bodies ; the one Primary , viz. the Heavenly Matter , by its strife upward , not from any innate Appetite , but to continue its Motions according to the Laws of Nature . The other Secundary , viz. any Earthly Body carried upwards , whether it be obsequent to the Motion of the Heavenly Matter , as Air , Vapours , Exhalations , and any other lesser Particles ; or whether it be driven upwards by any other Cause : So Smoak agitated by the Fire , hath a Power of depressing the Air : Thus when any one casts a Stone upwards , he at the same time thrusts down as much Air in its place ; which Air because of the Heavenly Matter intermix'd with its Particles , and its Agitation thereby caused , as likewise its Elastick force , will first resist the Motion of the Stone , next hinder its Ascent , and at last depress or thrust it downwards . XII . Whence the various Heaviness and Lightness of Bodies doth arise , You will object , if the Heaviness of Bodies depend on both these Causes , it will follow that all Bodies would be of the same Weight or Heaviness , since both the Heavenly Matter , and the small Bodies carried upwards , do press them after the same manner . I answer , that the Nature of Heaviness and Lightness in Bodies , consists herein , that as much Heavenly Matter as there is in any Body , so much cause of Lightness they have , which being substracted , all the rest will come under the notion of Gravity or Heaviness . As for Example , Water is Heavier than the Air , because if you substract the Aethereal interspersed Matter from them both , there remains more Earthly Matter in the Water , than in the Air. So that this may be laid down as a General Rule , That the more Heavenly Matter there is in any Body , by so much the Lighter it is , that is , the more apt it is to be carried upwards ; and the less there is of it , the Heavier that Body is , that is , the apter to be thrust downward . XIII Solid Bodies are more Heavy than soft Bodies . Thus solid Bodies are more Heavy than soft , because they have more Matter of their own , and therefore are called close Bodies , having less Pores , which can only admit the Subtil Matter , or the Globuli of the second Element , such as are Gold , Silver , Quicksilver and Steel . But soft or less Solid Bodies , contain more Heavenly Matter ; and have greater Pores , and are therefore Looser Bodies , such as Wood , &c. Wherefore tho' all the Heavenly Matter , with all its force strives to recede from the Center ; yet the more close and compact Bodies have a greater Power to resist , and do more difficulty recede from the Center of their Motion ; whereas Bodies of a more loose Texture , have more of the Heavenly Matter than of their own , and a greater Propension of receding , and therefore do less resist the Agitation of the Heavenly Globuli , or little round Bodies . XIV . Whence proceeds the variety of Heaviness . This is the reason why the Water is placed on or above the Earth , and the Air above the Water ; because the parts of the Earth being more solid than those of the Water , and the parts of the Water , than those of the Air , they are more strongly driven down to the Earth , by the Aethereal Matter ; much after the same manner , as Corn , that is mixt with Chaff , is by the Agitation of a Fan cast off further , leaving the Chaff behind it . XV. How it comes to pass that a Stone towards the end of its ▪ motion comes down faster than at the Beginning . It may be objected against this , that the Globuli of the second Element , do strike with a greater force against Bodies , before they begin to descend , than in their falling down ; and therefore they ought to thrust them down more swiftly at the Beginning of their Motion , than towards the end of it ; which not withstanding is contrary to experience ; for a Stone moves swifter towards the end of its Motion , than at the Beginning ; and therefore the Descent of Earthly Bodies is not to be ascribed to the Subtil matter . XVI . Answer . I answer , that the reason of the Difference of the Stones Motion is this , because the Stone in its Descent , retains the Force of the foregoing Motion , and besides receives an encrease from the Impulse of the Subtil Matter that follows it ; for the Subtil Matter is swifter than it . Now the cause why Descending Bodies are less forceably driven down by the Subtil Matter , towards the End , than at the Beginning of their Motion , is this , because there is not so great a difference of swiftness between their Motion , and that of the Subtil Matter . XVII . How Bodies can move in the Air seeing they are prest on all sides by the Fluid Matter . But you will say , seeing that the Bodies that are surrounded with Fluid Matter , are equally prest upon on all sides , they are not like to move at all , but will remain hanging in the Air. I answer , that this indeed would follow , in case the Fluid Body be simply consider'd as Fluid : But since the case is otherwise here , and that the whole Fluid Matter , because of the Resistance of the Earth , strives to get free from its Neighbourhood , this is sufficient to determine the Motion of Gross Bodies downwards , as being much more unfit for Motion , than the Heavenly Matter , and Fluid Bodies , in which they are carried , are . XVIII . This opinion doth most appositly explain all the Phaenomena of Gravity . How Appositely this opinion solves all the Phoenomena of Heaviness will appear from the following particulars . First , This force will exert it self every where throughout the Earth , because the Celestial Matter will find resistance every where , that is , it will be determined upwards as well towards the Poles , as about the Aequator and Lines Parallel to it . Secondly , All things fall down perpendicularly to the Horizon ; because the Coelestial Matter hitting against the Earthly Particles , will rebound back with infinite variety , because of their different meeting , Figure and Situation of their Parts , that is on every side equally , at least to Sense ; and consequently will make all those things Fluid , which are fit to follow its motion ; and whatsoever is impulst by the Fluid Mass , will fall perpendicularly , because it is with equal force prest on all sides . Thirdly , The Sphere of Gravity becomes terminated , where this force of receding , because of the too great distance , is not strong enough . Fourthly , Here we find the reason , why every Planet hath its Sphere of Gravity , because nothing else is required to this , but its swimming in the midst of Fluid Matter . XIX . Heaviness is either absolute or Respective ▪ From all that hath been said it is obvious , that Heaviness is nothing else , but the strife or effort wherewith a Body is pusht towards the Axis of the Earth by other Bodies , which strive to recede from it . That Absolute Heaviness is that by which every Body is pusht downwards by a Column of the second Element equal to its own ; and that Respective Heaviness is that which belongs to a Body , only with respect to other Bodies . CHAP. XII . Concerning Place . I. What Place is . HAving examin'd the Rarefaction and Condensation of Bodies , and inquir'd into the Reason of their Heaviness and Lightness , it remains now to consider why Bodies are said to be in a place , and what order they keep amongst themselves . Now Place is nothing else , but a respect of the Situation of a Body , which it hath amongst other Bodies , to which it is either near or far from . So that when we say that a Body is in a place , we only intimate thereby that it hath such a Magnitude , Figure and Situation amongst other Bodies , with respect to its nearness to them or remoteness from them . II. What Place is according to the opinion of the Common People ▪ True it is , that the Common People distinguish Place from a Body , and suppose Place to be the Space that receives a Body , and contains it . For they persuade themselves that Place is a kind of Space which Exists before the entrance of the Body , and remains after it is withdrawn . But this conceit ariseth from a Popular error , by which they imagine that there were some extended empty Spaces , before that there were any Bodies in Nature , and which were afterwards to receive them . As some Philosophers now since the Creation of the World fancy that there is a kind of empty Space beyond the Bounds of the World , which they call Imaginary Space , because it hath only Extension , without containing any Body at all . III. Space is the same with a Body . But these Philosophers speak very improperly , since whatsoever is extended in Length Breadth and Depth , and wherein Parts can be assigned , by the intervals whereof Bodies may be said to be near or far off from one another , cannot be said to be a thing Imaginary , but a true and real Body . For the Natrue of a Body consists in Extension , and the Idea of Extension is the same with the Idea of a Body . Seeing therefore the Imaginary Space , as they call it , hath Length , Breadth and Depth , it must needs be a Body . Whence it is apparent how improperly they speak , who tell us that Bodily things are in a Space ; for since every Space , because of its Extension , is distinguisht from the Dimensions of the Body , that is in the Space , and that Penetration of Dimensions is impossible , should we suppose a Space to receive a Body , this would be a Penetration of Dimensions . Now Bodies are therefore said to be impenetrable , because they have their peculiar Dimensions which exclude any other , and do not suffer them to be contain ▪ d in the same place ; and since a Space is measur'd with the same Dimension as a Body , therefore a Body cannot be said to be in a Space . IV. In what Sense a Body is said ●o be in a 〈◊〉 But you 'l say , how then is a Body said to be in a Place , if a Place be extended as well as a Body , and that one of them exclude the other ? I answer that a Body is said to be in a Place by the Situation , Magnitude and Figure it hath amongst other Bodies ; so that we must not conceive any thing as extended , but only the Body that is in the Place , and all the Space or Expansion that is conceiv'd to be there , must be attributed to the Body only . For to speak properly , Place or Space is nothing else , than something that is extended in Length Breadth and Depth , which is the same with Matter ; neither can it be distinct from it , but by our way of conceiving . Wherefore when a Body is said to take up a little or great place , the meaning of it is only this , that such a Body hath a greater or less Extension amongst the Bodies that surround it . This gave occasion to St. AUSTIN to say 〈◊〉 52. ad Dard. Take away Spaces from 〈◊〉 and they will be no where , and being no where they will not be at all . V. Space is not Really distinct from a Body . Wherefore there is no Real Difference between a Space and a Body , but only according to our way of Thinking , viz. because we consider the Extension of Space as Common and General , but the Extension of a Body in a Space as Individual and Singular . As for Example , when a Stone is taken up out of its place , we suppose its extension to be removed also , because we look upon it as singular and inseparable from it ; but yet we conceive that the Extension of the place in which the Stone was , still continues , and is the same , tho' the Stones Place be now taken up by another Body , viz. Wood , Air , &c. Because this Extension is consider'd in General , and suppos'd to be one and the same , whether of the Stone , Wood , Air , or any other Body , provided it be of the same Bigness , and have the same Situation amongst those Bodies that determine and bound that Space . Wherefore it is evident that the Inward Place , which is taken up by any Body , doth not differ from the Body it self , no more than the nature of the Genus or Species differ from the Individual . And tho' a Body may be said to change its Place , this is not to be understood of the Inward , but only of the outward Place , that is , of the Superficies of those Bodies that surround it , to the different parts whereof , it may be diversly apply'd . VI. Place is twofold , Inward and Outward . This will be more evident by distinguishing Place into Inward and Outward ; Inward Place is nothing else but the Matter it self extended in Length Breadth and Depth , or the Body it self : Outward Place is the Superficies of the Body , which immediately surrounds the thing Placed . And this Place is neither a Body , nor any thing of a Body , but only a Mode of it , or the limit wherein the Body is contained . For by the name of Superficies , no part of the Ambient Body is understood , but only the Boundary or limit ▪ that intervenes between the Ambient Body and the Body surrounded , which is only a Mode . Or we understand thereby a Superficies in common , which is no more the part of on● Body than of another , only is suppos'd always to be the same , because it retains the same Magnitude and Figure . For tho' every Ambient Body together with its Superficies be changed , yet is not the thing it surrounds therefore supposed to change its Place , provided it keep the same Situation amongst other Bodies , which are consider'e as immoveable . Thus we do not say that a Tower changeth its Place , when the Ambient Air leaves it , because we suppose that still other Air comes in the room of it , and accordingly the Superficies is neither a Part of the Body containing , nor of that contained , but only an intermediate term or limit , which indeed is nothing else but a Mode . VII . A Body in the Imaginary Space , is neither here nor there . Moreover it is evident , that , if there were any such Imaginary Spaces , the Bodies contained in them could not be said to be in a Place , forasmuch as in them there is no outward Place , neither can any parts be assigned to them ; and therefore a Body cannot be said to be here or there in them , notwithstanding that it really takes up a Place . But a Body being consider'd as something consisting of Parts , and consequently contiguous to other Parts of Bodies , according to this Notion there can be no Body , which hath not a determin'd Place , with respect to its nearness or contiguity to some other Body , by which its External Place is designed . VIII . The Difference between External Place , and Space . The difference therefore between External Place and Space is only this , that Place more expresly denotes the Situation of a Body , than its Magnitude or Figure ; whereas Space refers rather to these two latter . For we often say that a thing comes into the place of another , tho' it be not exactly of the same Bigness or Figure ; but at the same time deny it to take up the same Space : And so whenever the Situation is changed , we see the Place is changed , tho' the same Bigness and Figure do remain . And when we say that a Thing is in a Place , we mean nothing more than that it hath such a Situation amongst other Bodies ; and when we say that it fills such a Space , we understand thereby its being of such a determinate Figure and Magnitude . All which will be further cleared by the following Rules . IX . The First Rule . When a Place is said to be equal to the thing placed , this is either understood of the Inward Place , and then it is the same , as to say , that a Body is of such Dimensions , or equal to it self ; or else of the Outward Place , and then it imports , that the bounds of the Ambient , do exactly answer to the Superficies of the Body surrounded or contained , but not as if they had equal Dimensions : in like manner as the Rule is said to agree with the thing ruled , tho' it do not agree with it every way , as to its threefold Dimension . X. Second Rule . Two Bodies cannot be in the same place at once , that is , they cannot at the same time have the same respect of distance to the same Bodies ; for if so , they must penetrate each other , and there would be a Multiplication of Extension , without supposing any new Parts , which is contradictory to the Notion of a Body . XI . Third Rule . One Body cannot be in two Places at the same time , that is , it cannot be placed between these and other contiguous Bodies at the same time , because a Plurality of Places infers a Plurality of Bodies ; for Place is only the Mode of a Body : Or thus : Space is not distinct from a Body , therefore the Body that is in diverse Spaces , is both another and the same thing at the same time . XII . The Fourth Rule . Fourthly , a Body is said to change its Place when it changeth its respect to other Bodies ; and forasmuch as we can have regard to different Bodies , the same thing may be said to change its Place , and not to change it , under a different regard ; tho' most properly a thing is said to change its place , with respect to those Contiguous Bodies , that are considered as immoveable . XIII . How the Inward Place is distinguish'd from the Outward . Whence it appears that the Inward Place of a Body , or the Space it takes up , consists in the Body it self , consider'd as bounded by other Bodies , which immediately touch it ; and that the Outward Place consists in the first Surface of the Bodies that surround another Body . CHAP. XIII . The supposing of a Vacuum in Nature , implies a Contradiction . I. What a Vacuum is ●ccording to the Sense of the Com●●●n People . IT cannot be denied but that the common way of Speech doth frequently differ from Truth , and that they are lyable to mistake , who mind words rather than their own Notions ; as they seem to do , who by the word Vacuum , understand the absence of some Body , which ought to be in such a Place . As when they say , that a Vessel is Empty , which is not fill'd with Water , Wine , or the like ; or a Purse is empty , in which there is no Mony , and a Space empty in which there is no sensible Body . II. What a Vacuum is according to the sense of Philosophers . But learned Men allow nothing to be empty , but what is devoid of any Body whatsoever ; and therefore they commonly define it a Place void of Body , yet fit to be filled . This Vacuum is twofold , Disseminate or Coacervate . III. What a Disseminate Vacuum is . A Disseminate or interspers'd Vacuum they call small Spaces , which are suppos'd interspers'd between Material Things . IV. What a Coacervate Vacuum is . A Coacervate Vacuum , is a sensible Space void of Body , such as they suppose to be in a Pipe of Glass after the removal of the Quicksilver in the Torricellian Experiment . V. T●at neither the one , or the ●●her of these Vacuums can he admitted appears 〈◊〉 ●rom the Nature of a Body . That neither of these Vacuities can be found in the Universe , may be prov'd by many Arguments . First because every Space imports Extension , which is of the Essence of a Body ; for it implies a Contradiction that nothing should have an Extension , and therefore there cannot be any Space , in which there is not a Corporeal Substance . For as we suppose a Body to be there , where we find Extension ; so for the same Reason we must conclude , that a Body must be in a Space , because we clearly conceive Dimensions in it : So that it is not more impossible to conceive a Mountain with out a Vally , than to conceive Space without Matter . VI. Secondly 〈◊〉 the Definition of a Vacuity . Secondly , a Vacuum is defined to be A place devoid of Body : Now this also implies a contradiction , supposing the notion we have already given of place to be clear and distinct ; for where there is no Body , neither can there be any Mode of a Body ; yea , the very empty Space it self , will be no less in a Place , than any Body whatsoever , as is evident to him that considers it well : And what can be more unworthy for a Philosopher , than to accommodate this Idea to a Non-Entity , which altogether agrees to a Real Being ? VII . What would follow , if whatsoever is in a space should be taken out of it by God. You 'l say that God can take away all the Substance , that is contain'd between the Walls of a Chamber , and keep any other Body from entring it ; upon which supposition a Vacuum must follow . VIII . First Answer . I answer in the First Place , that this or the other Body may be taken out of a Chamber or any Vessel ; but it is impossible that they should be without any Body at all . For where there is no Body , there is no Extension , where there is no Extension , there is no hollowness , capacity or interval , and without these there can be no Vessel or Chamber . IX . Second Answer . Secondly I say , that supposing all intermediate Bodies to be taken away , the Chamber VValls would touch one another , because nothing would be between them ; for we cannot conceive one thing to be distant from another , without some Middle thing to separate them ; because distance is a Mode of Extension , and therefore follows a Bodily Substance , without which it can neither be , nor be conceived . X. To conceive a space without Extension , implies a Contradiction . But you will say , that the Body which is conceiv'd to be in the Chamber or Vessel , is something different from the sides that surround it , and therefore the one may be separated from the other by the Divine Power , forasmuch as we clearly and distinctly understand the one , not to be the other . I dare not say that any thing is impossible to God , or that he cannot make a Mountain without a Valley : But this only I assert , that God hath made my Mind such , that I cannot conceive how a Mountain should subsist without a Valley ; or how Five and One should not make Six . And the same may be applied to that Space which is imagin'd to be between the Sides of a Chamber or Vessel , because the same cannot be conceived without extension . And since nothing can have no Properties , that Space cannot be said to be a Vacuum that is void of all Matter . Or if that should be , the sides of the Chamber or Vessel , must be suppos'd to touch each other . For if God should annihilate all the Air that is in a Chamber , there would be no Space left between the VValls ; for if any Space be left , there must be Magnitude also ; and if Magnitude , then Quantity ; and if Quantity , Matter , and consequently a Body , because Space , Magnitude , Quantity , Matter and a Body are one and the same thing . XI . If Bodies be taken away , all distance is taken away likewise . For what can be imagin'd more absurd than to assert that the distance of Bodies is owing to an Imaginary Space , or nothing , seeing that when the intermediate Body is taken away , all distance must of necessity be taken away likewise ? Who will say that nothing can be measur'd , when it is evident , that not only Extension , but any other Propriety whatsoever , must be remov'd from Nothing ? For if I may say that a Space ( which is nothing ) is of such a length , I see no reason why I may not as well ascribe other Properties to it , such as Hardness , Softness , &c. It remains therefore that Nothing cannot make a Distance between Bodies . For suppose we a Square Vessel ABCD , and the Hollow of it to be empty , I say that the same cannot be measur'd : For tho' if it be enquir'd by what thing the sides AB , DC are distinct from one another , it may be readily answer'd by the Straight Lines AD , BC. Yet I cannot return the same answer to him that enquires the distance between the opposite Angles DB : for if I should say they are kept at a distance by the Straight Line DB , how can this be true , seeing nothing at all is in the Vessel , and therefore no Length or Measure can be apprehended in it ? XII . There is a necessity for the Connexion of Bodies . This Conclusion may be confirmed from the necessity there is of a Connexion of all the Bodies that do constitute the Universe , and that they be so joyned together as not to be separable from each other . Which yet is not so to be understood , as as if there were such a Connexion , between this Chamber suppose , and the particular Air that is in it , that they cannot be separated from each other ; for we see that this Air is driven out by the Wind , and that other comes into its place ; but only thus much , that there is a necessary Connexion between this Chamber , and Quantity in General , forasmuch as there can be no Distance or Interval , but must be fill'd with some Body or other . XIII . Supposing a Vacuity , two Round Bodies would totally touch one another . The same may be farther prov'd from the Absurdity which would otherwise follow ; because supposing a Vacuum , Round Bodies would touch one another after the same manner as Flat Bodies do , that is , totally . For those Bodies are said totally to touch each other , between which there is no intervening Medium ; but betwixt two Round Bodies in a Vacuity there can be no Medium assign'd ; therefore they touch with their entire Superficies . It is not sufficient for the solving of this , to say , that a Possible Substance mediates between them , because a Possible Substance cannot be an Actual Medium dividing and separating Bodies : For otherwise nothing in the World could be said to be united ; since between the Parts of Bodies that are united there is some Possible Medium that may divide them . XIV . An Objection , that Distance is nothing else , but a negation of contact . If you say that Distance is no Real Thing , because two Bodies may be conceiv'd to be distant , only by the Negation of their contact ; and that it is not necessary for any thing to intervene between Bodies to make them distant from each other . XV. The Objection answer'd , and distance prov'd to be Extension . I answer , seeing Distance is a Relation , which must be between more than one , it belongs to Opposition or Distinction , the Essence whereof consists herein , that one thing is not the other . But forasmuch as there is no Real Distinction , which hath not its Foundation , because nothing can have no affections , therefore the Foundation must consist in something that is different from the things between which there is a Distance , which since it cannot be Spiritual ( for then it would be void of Extension ) it must be Material or Corporeal . For it would be a very improper Answer to the Question , why London is at a distance from Paris , to say , Because they do not touch one another ; for this would be the same thing as to say , that London and Paris are at a distance , because they are not near one another , which is to explain an unknown thing , by another thing equally unknown . We conclude therefore , that Distance , besides the Negation of Contact doth necessarily include Extension , by means whereof remote Bodies are said to be distant from one another . XVI . Nature doth not abhor a Vacuum . Hence it appears how falsely the Schools assert , that the motion towards mutual Contact , is prevalent above all others , as being ordained for the Conservation of the Universe , by the avoiding of a Vacuum in Nature : For how can Nature be said to avoid a Vacuum , seeing that an Empty Space implies a contradiction ? For those things are us'd to be forbid by the Laws , which may be done , and not such whose being implies a contradiction . XVII . Water condensed in a close stopt Vessel , doth not leave a Vacuity . All other Arguments made against this opinion are of no force at all against us , who assert the Extension of Space , not to differ from the Extension of a Body , forasmuch as it includes Length , Breadth and Depth . What they object of a Vessel fill'd with hot Water , which tho' it be close stopt , yet the Water that is in it , is reduc'd to a less Space , and consequently must leave a Vacuum , is of no Moment at all , because the Space which they imagine to be void , is fill'd with the subtil Matter penetrating the Pores of the Vessel ; for it is a meer vulgar Errour , to believe those things to be Empty , which we do not see to be fill'd with Bodies . XVIII . A Body is no less fill'd with one Body than with another . It is evident from what hath been said , that a Vessel doth not contain more Matter when it is fill'd with Gold , than when it is fill'd with Air , forasmuch as there is as much extension in the Air as in the Gold. A Vessel indeed may contain more Gold , than it can of Pumice Stone , because in this latter there are many Pores which are fill'd by the Air , and not with its own Substance . CHAP. XIV . Of the Vulgar and Philosophical Definition of Motion . I. Local motion only is ●● be admitted of in Philosophy . BY the name of Motion we only understand that which is Local , as being the only Motion that is found in Nature , and to which all the rest are to be referr'd . For tho' ARISTOTLE Lib. 8. Physic . cap. 7. reckons up three kinds of Motion , viz. Motion in Magnitude , in Affection , and in Place ; yet he asserts that the latter of these must needs be the first of all Motions , and concludes , that Generation and Corruption , Accretion and Diminution , and last of all , Alteration , cannot be without Local Motion . For what else is the Motion of Generation and Corruption , but Local Motion , whereby the sensible and insensible parts , are fitly , or unfitly joyned together , according to the Essential Constitution of Bodies ? So likewise in Accretion and Diminution there is a Local Motion , whereby several parts are united to the Body growing ; or whereby those that have been joyned with it , are now separated from it . And as ●o Alteration , we find for Example , that Calefaction or Heating is perform'd by Local Motion , it being nothing else but the swift agitation of the parts of some Body ; as in Refrigeration or cooling , the said parts are more slowly moved , or have no Motion at all . Tho' indeed if we would speak strictly , all the other Species of Motion that are commonly reckon'd up , are rather changes made by Motion , than Motions . II. All other Motions 〈◊〉 but the Differences of Local Motion . Wherefore seeing that all these kinds of Motion , are only certain differences of Local Motion , denominated from their various effects of Generating , Corrupting , Encreasing , Diminishing and Altering , we should multiply Entities in vain by going about to establish any other sorts of Motion , besides this . III. Motion examin'd according to the sense of the Common People . But that we may the more clearly discover the nature of Motion , we will first enquire what is understood by this Word , according to the vulgar acception of it , and then come to explain the true and Philosophical Notion of it . IV. What the Common People understand by Motion . The Common People by Motion , understand the Action whereby some Body is remov'd from one place to another . This is that which they do mean by Local Motion . And therefore they suppose that a Body may at the same time be moved , and not be moved , as a Master of a Ship , who is said to be moved , if the Shoar be consider'd as immoveable ; and not to be moved , with relation to the Stern of the Ship where he sits . Secondly , by this action the Common People imagine , that a greater force is required to produce Motion than Rest . Which Judgment they make , because they find that the Command of their Will is required to the moving of their own Bodies , whereas they Rest by their own Weight , without standing in need of any other thing to stop them . But they may be easily convinc'd of their error by putting them in Mind , that very often there is as much action required to stop the Motion of Bodies , as there is to move them . For there needs as much force to stop a Stone that is tumbling down from a Mountain , as to tumble down a Stone , that lies still on the top of it . V. Five things to be consider'd in Motion . There are five things to be consider'd in every Motion ; the mover , the moved , the Term from which , and the Term to which , and Succession . The mover is that which doth move ; the moved , is the Body that is moved by the Action of the mover ; the Term from which , is the Neighbourhood of those Bodies which it quits ; and the Term to which , is the Neighbourhood of those Bodies to which the Body comes ; and Succession is that progress whereby the thing moved is continually in a different manner apply'd to the various Parts of Ambient Bodies . VI. Wherein Motion properly doth consist . Now to the end that this Progress or Succession may be the better understood , we are to observe , that Motion may be consider'd three manner of ways : First , as it proceeds from the mover , as by example , from a Man who throws a Stone , and so in the mover it is call'd an Action . Secondly , as it is receiv'd in the thing moved , at the first moment of its impulse , whilst it is yet joyned to the mover , Ex. Gr. in the Stone , which a Man casts , and so it is a Passion . Thirdly , forasmuch as it is in the Body moved , separated from the mover , as in a Stone , when it is carried through the Air , and so it is a certain Mode or state opposit to Rest ; and in this last Sense Motion is here taken : And accordingly Motion is defin'd to be , the Translation of a Definite Body from the Neighbourhood of Bodies that immediately touch it , to the Neighbourhood of other Bodies . Or it is the successive application of one Body , to the Parts of Bodies immediately touching it . VII . Wry M●tion is called Translation . It is call'd a Translation in the first place to shew that Motion is not a thing subsisting , but only a Mode of Substance : For a Body is otherwise when it is moved than when it rests . Secondly , to distinguish it from the Action that translates it , or the Cause of its Motion : For that Rule of Logick is sufficiently known , that the cause cannot be the Genus : For we do not say that a sound is the motion of the Air , but a Quality arising from the Motion of the Air. And in like manner we must not say that Motion is an Action , but a Translation caused by some Action or force , which will more clearly appear , when we shall shew hereafter , that the Moving force is not a Mode of the Matter , but the Action of God. VIII . And from the Neighbourhood of Bodies that touch it . It is said to be the Translation of one Body out of the Neighbourhood of Bodies Immediately touching it , &c. not from one place to another , because by the word Place nothing of certainty is signified , forasmuch as with respect to diverse things , the same thing may be said to change its Place , and not to change it . So he that sits in a Ship , changes his Place with regard to the Shoar , which he leaves , and does not change it regard being had to the parts of the Ship. Now by defining Motion to be a Translation from the Neighbourhood of contiguous Bodies , we denote that the Body is moved by its own proper Motion : So that tho' many common Motions , may be at the same time attributed to the same Body , yet one of these only is its Proper Motion , viz. that whereby it is separated by Bodies contiguous to it . As he that sits in a Ship , tho' he participate of the various Agitation of the Ship , yet is he not moved with any proper Motion of his own , because he abides fix't and unmov'd as to the contiguous Bodies that are about him . IX . What is meant by one Body in the Definition . By one Body is understood all that which is transferred ; tho' it may consist of many parts , which have other Motions . Because these Motions are not really distinct ; it being a difficult thing to understand so many Motions together : As for Example , when the Body of an Animal is moved , his Tongue , Hands , Blood , and Spirits are moved also ; all which Parts have their particular Motions , besides the common Motion of the whole Body , which they partake of . X. How Bodies are moved , since there is no Vacu●m into which they may be received . But the Difficulty is since there is no Vacuum in Nature , and that all the Bodies of the Universe , have proportionate places which they fill up , how can Bodies be moved when there is no empty space to admit them ? XI . Ars●er . I answer that local motion may very well be performed notwithstanding the absolute Plenitude of the Universe , not by means of any Compression and Dilatation of the Fire ( as the Peripateticks tell us ) but by a circular yielding of Bodies ; so that when a Body is moved , it thrusts the next Body in its way out of the Space , which it enters into , and that again thrusts out another , and so to the last ; which enters upon the place which the first Body has left , at the same instance that it leaves it . This we see in a round Pipe fill'd with Bullets , that the first of them cannot be moved , except the last by the impulse of the intermediate ones do succeed into its Place . Thus our Philosophy rejects all similiar , Magnetical and Electrical Attraction , and every motion which is not performed by the impulse of Bodies , according to the Rules hereafter to be mentioned . So that whenever this Circular Motion of Bodies is hindred , there can be no Motion at all ; as may be seen in a Tasting Pipe used by Wine Coopers , represented by ABC , the upper Orifice A , being shut , and the inferior C , open . For tho' the liquor that is contain'd in it be much heavier than the Air , that is without ; yet because the Air that is prest by the liquor ready to run out of the under Orifice C , cannot recede , because the upper Orifice A , is stopt from receiving the Air that should succeed instead of the liquor running out of C , therefore the liquor continues in the Pipe as finding no place to receive it , because the circular Motion of Bodies is hindred , by the stopping of the upper Orifice of the said Pipe. XIII . A Body is more swifly mov●d through a narrow Passage . Thus may we see that the Motion of Bodies may very well be explained without penetration of Dimensions . And if it chance to happen , that the Circle through which the Body is to pass be unequal , that is narrower in one part than another , it must necessarily follow that the Body must be more swiftly moved where its passage is narrow , and so compensate the straitness of the place , by the celerity of its Motion . For it is one of the Laws of m tion , that when any liquor passeth from a large place to a straiter , the swiftness of its motion en●r●a●eth proportionably to the decrease of the wideness of its passage . This may be shewed by man● examples : Thus Winds are more vehement in a narrow passage , than in a wide Street ; a Bellows , tho' but leisurely comprest , sends out the Air through the Nuzzle with great swiftness and force ; and Waters otherwise gliding gently , when they pass through Sl●ces run violently ; and this because it is necessary that the whole Circle of Bodies should move all at once . XIV . Plato's way of explaining how all motion is made by a Circle . This opinion is thus explain'd by PLATO in his Timaeus : Forasmuch , saith he , as there is no Vacuum any where , into which any thing that is moved can enter ; and yet our breath continually goes out from us , it is apparent to every one that it goes not into an empty space , but drives the Air next to it , out of its place , which again drives away the next to it ; and according to this necessity whatsoever is driven into the place , whence the breath came forth , doth follow it . And all this is perform'd at once by a certain Revolution , since there is no vacuity any where . Wherefore as soon as the Breast and Lungs have let out the Breath , they are immediately fill'd again with the Air that surrounds and penetrates the Pores of the Body . And again the Air flying out of the Body , and the let out breath , forceth us to draw in our breath again , by the Passages of our Mouth and Nostrils . XV. Motion is not contrary to Motion ▪ but to Rest . One Motion is not contrary to another Motion , because when two Bodies of the same Bigness and swiftness meet , they do not lose their Motion , but are only reflected , and then so continue their Motions again . But Rest alone is contrary to Motion : And tho' a slow Motion may be said to be opposit to a swift , that is only because a slow Motion partakes of Rest . XVI . What Rest is . For Rest is a Continuance of a thing in the same place , or an adhaesion to the same Contiguous Bodies . This is an Affection proper to matter , which consider'd simply in it self ▪ without any force from without imprest upon it , continues unmov'd , that is , hath its parts continuous to it self . Now this Rest or Quiet is something Positive as well as Motion : For Rest , according to its Magnitude , resists motion more or less , alters the determination of motion , and keeps the parts of continuous and hard Bodies close together , which could not be done by that which is meerly Privative . And indeed forasmuch as Rest is something stable and permanent , if compared with motion , which is flowing and passing , we cannot deny it Reality . XVII . Rest is 〈◊〉 to Motion . Rest therefore is oppos'd to motion , not Privatively , as Habit and Privation ; but Positively , as two contraries , whereof the one is contrary to the other ; for Rest is adverse to motion by resisting it , and that either by diminishing it , or reflecting it . XVIII Motion is not a Real Quality , as the Peripateticks suppose , but only a Mode which is not distinct from the Body . For we cannot conceive it to be any thing else , but the change whereby a Body is translated , or withdraws from some other 〈…〉 immediately touch it . As when 〈…〉 of a River , we see a Fish for 〈…〉 over against the same place , without being carried away by the course of the Water , which on all sides surrounds it , we must conclude it to be really moved , because the whole outside of the Fish , is successively apply'd to diverse parts of the Water that do immediately touch it ; and because we find all that in it which happens to another Fish that swims in a Pond ; and moreover the effort he useth makes him successively to correspond to different parts of the VVater . And on the contrary when we see a Stick driving in the VVater , so as to be always apply'd to the same parts of the Water , we must say that it doth not move , but lye still , forasmuch as the said Stick is without any Action of its own , and doth not correspond successively to divers Parts of the VVater , because a Stick in this case , and the VVater , make up but one thing , which is really moved . XIX . Motion and Rest are the Modifications of a Body . As we cannot conceive an Application to be made to different Parts , without conceiving a Body that applies it self to them ; therefore we are to judg , that Motion is not an Absolute Entity , as hath been said before , but only the Modification of a Body that is moved ; and so Rest likewise the Mode of a Body resting . Whence it appears , that Motion and Quiet superadd nothing more to a Body moved or Resting , than Figure superadds to a Body figured . And seeing that a Body may either be moved , or not moved , we must conclude , that Motion and Rest are Accidental to Matter . XX. There is no violent Motion in Nature . We may also infer from what hath been said , that there is no violent Motion in Nature , since it is as connatural to Bodies to push forwards one another , as to rest and lye still . For Matter consider'd in it self , being idle and unactive , and receiving its motion from an External Principle , it follows that Motion equally agrees to all Bodies . Neither can the Motion of a Stone cast upwards , be said to be violent , any more than the Motion of a Ball when it falls down perpendicularly to the Earth : For as the Motion of a Stone cast up into the Air , proceeds from the force of him that casts it up ; so the descent of a Ball proceeds from the subtil matter which carrieth the Earth and compresseth all its parts towards the Center . For the word Violent hath reference only to our Will , which is said to be forced when any thing happens to it , which it resists and strives against . CHAP. XV. Of the Principle of Local Motion . I. There are two Principles of Motion . FOrasmuch as Matter hath no power to attribute any motion to it self , or to remove another Body out of its place ( as shall be said in the following Chapter ) we are to enquire here what is the Cause of motion in the Universe . In which enquiry , that we may follow the order we see in the World , we shall pitch upon two Principles of motion ; the one General , on which all motions in the world do depend ; and the other Particular or secundary , to which all singular motions are attributed . II. God is the first Cause of Motion . The First and Universal Cause is that which first put matter into Motion , and is no other but God alone , who bestowed Motion upon the matter he had created , and preserves the same by the same Action by which he produc'd it at first ; and because it is agreeable to Right Reason , and the Idea we have of God , that he should conserve his Creatures in the most simple way ; it seems more than probable that God continues the same Agitation in the Universe , which he imprest on it at first , yet so as that he can always whensoever it pleaseth him change these Laws , which he hath established . III. The Second Cause is the meeting of other Bodies . The Second or Particular Cause is the meeting of Bodies , by which means it happens , that this Divine Action , which preserves Motion , exerts it self sometimes in these , sometimes in other Bodies : Whence the difficulty which ariseth from the Communication of Motion may be easily solved ; for tho' Motion , as being only the Mode of a Body , cannot remove from one Subject to another , which Regius unwarily asserts ; yet the agitating force , being no Mode of a Body , may by removing shew it self sometimes in this , sometimes in the other Body . IV. The Communication of motion is performed according to the Laws at first set by God ▪ Whensoever therefore DES CARTES speaks of the Communication of Motion , he is to be understood of that Power , which preserves Natural Things in the same condition wherein they were constituted at first , and all effects order'd according to the Laws appointed for them , and suiting to their Natures . V. Three Laws of Nature . There are three Laws of Nature , which are founded in that most simple Concourse , whereby God preserves all Bodies , which are very conducive to understand the Nature of Motion . VI. The First Law of Nature . The First is this ; Every Natural thing , if it be simple and undivided , always inclines to continue in the same state wherein it is : So that no change can happen to it , but from some outward Principles . Thus a Round Body , always keeps its Round Figure , neither is the same destroy'd , but by some supervening foreign Agent . And supposing the same Body to be moved , it will still proceed further , except it meet with some impediment that puts a stop to its Motion . And according to this Rule , we say , that a Body once put into Motion , for example , a Ball struck by a Racket , doth not stop at the Wall from whence it is reflected ; for should we suppose any interruption in its Motion , we should be at a loss to find the cause that excites a new Motion in it again . Wherefore we must conclude that that which is moved , is always moved , and that which rests , rests always . And for this cause it is that a Stone continues its Motion , after it is let go out of the hand of him that throws it . VII . The Reason of the Foregoing Rule . This Rule may easily be gather'd from what we shall say in the following Chapter : For seeing that a Body cannot move it self , it follows , that that which rests , must persevere so , except by some outward force it be driven out of its place . And in like manner , when a Body is once put into Motion , no reason can be assign'd why it should not continually proceed therein , with the same swiftness , as long as it meets with nothing that stops its career . For since nothing can be done without a Cause , the state of a Body cannot be changed without the Action of a Cause . Hence it is that a Leaden Bullet being let fall from the top of a Mast , notwithstanding the swift course of the Ship , yet falls down straight to the bottom ; for the Motion of the Bullet being a Compound of progressive and descensory Motion , and both of them continuing in the same state , it is evident that the Bullet can fall no otherwise than it doth . VIII . Every change proceeds from outward Causes . Wherefore we shall meet with no change in Bodies , as to Motion or Rest , Swiftness or Slowness , Figure , Situation , Magnitude , &c. which do not proceed from without , the searching out of which Causes is the particular task of Natural Philosophy . Water indeed doth by degrees lose its Heat , but then it is no simple , and undivided Body ; for it derives its agitation from without , and retains it as long as the agitating Cause continues ; but forasmuch as the Cause ceaseth , and the more thin parts of the Water Evaporate , and communicate their Motion to the Neighbouring Bodies , by this means the VVater becomes reduc'd to its former state of Coldness . IX . Why a Stone after some time , falls down again to the ground . You 'l say , a Stone cast up into the Air , doth after a short time fall down again to the ground , which would not be , if a Body once moved , were inclin'd to continue its Motion ; for according to this Rule , it ought continually to proceed , tending upwards . X. Answer . I answer , that a Stone falls down to the ground , not because it willingly desists from its Motion , but because it is hindred by the Bodies it meets with on its way from proceeding any further . For the Air and fluid Matter that is in it , do not without difficulty admit the entring of other Bodies ; yea and besides do very much resist them , as is obvious to our sense of Feeling . For the subtil Matter , which thrusts Bodies downward , hinders the Stone from being carried up to Heaven . So that we our selves , when we leap up from the Earth , should still continue in the same Motion mounting upwards , if the subtil Matter which surrounds the whole Earth , did not drive us downwards . XI . No body moves circularly but by the intervening of outward force . What hath been said of a Stone falling to the Ground must likewise be understood in General of all other Bodies : Wherefore if we see a Body in its Motion describing the four sides of a Square Figure , we must conclude that at every one of the said Angles where it changeth its determination , it hath been forc'd to it by the meeting of some other Bodies , which have oppos'd its Motion and determination . And forasmuch as a Circle is Equivalent to a Figure of an infinite number of sides , it follows , that a Body which is circularly moved , must suffer a continual violence by meeting with several other Bodies , for without this it could never move in a round Line . XII . Another reason why Bodies persevere in their motion . But the chief reason that moves us to assert , that a Stone , or any other Body would persevere in its Motion , if we were not hindred by other Bodies , is , because Rest is contrary to Motion , and nothing by its natural Propensity tends to its contrary , that is , to its own Destruction ; and consequently a Body if once moved will move always , or if at rest , will always continue so . And in this Principle alone we place the Power of the Action and Resistance of Bodies . For as a thing that is united , hath a Power to resist its being separated from that which rests , to oppose that which would put it into Motion ; so that which is moved hath a Power to continue in its Motion with the same Swiftness , and towards the same place . XIII . Why a Body ceaseth to move . Thus a weight hanging at the end of the Packthread A B which by outward force is mov'd this way and that way , if it were transmitted to G , would fall down thence , and mount up to D , and always retain this Equality of Motion ; neither would it ever , by slackning of its Motion , come down to E and F , but that the Air hinders it from continuing its begun Motion from G to D. Forasmuch as no reason can be assign'd , why that which is , should cease to be , except a more powerful thing do hinder and oppose its force . XIV . The Second Law of Nature . The Sccond Law of Nature is this : Every Body in Motion , of it self tends to prosecute its Motion according to a right line , and not according to a crooked line . Notwithstanding that , many Bodies are forc'd to turn aside by their meeting or justling against other Bodies , and that , as hath been said before , the whole circle of Bodies moves together in every Motion . This Rule is inferr'd from the Definition of Motion , because it affirms nothing concerning Motion , save only that it is a Translation of one Part of Matter , out of the Neighbourhood of those Bodies that do immediately touch it , &c. into the Neighbourhood of other Bodies . So that except this Translation be most simple , that is , by right lines , and not crooked , we have attributed something to Motion , which is not contained in the Essential Notion or Definition of it , and so consequently that which doth not belong to its Nature . For whatsoever is moved , in every moment of its Motion , is determin'd to continue its Motion to some part or other , in a Right Line . Forasmuch therefore as God preserves Motion in the most simple manner that may be , and every natural thing continues in the state wherein it is , the Body moved will always continue its Motion in a Right line , except it be hindred from without . XV. Why every Motion tends to a Right Line . If you demand why every Motion tends to a Right Line , and not to a crooked ? I answer , because all the least parts that are found in a Crooked Line , are right Lines ; and since the circulating Body , ultimately exists in one of them , it follows according to the former Rule , that as soon as it is restor'd to its Liberty , it perseveres in the same state , and continues its Motion in that Right Line which there toucheth the Circle . But if the least parts in the Circle were crooked , the moved Body being continually carried along them , and afterwards left to its Liberty , according to the foregoing Rule , would pursue a crooked Motion , conform to the crooked particle of the Circle where it was last : But since this doth not happen , it is manifest that every Circle in Nature is a Polygon , or a Body of many Angles . XVI . Both these Laws demonstrated from the Divine Immutability . This Rule of Nature , as well as the foregoing , may be demonstrated from the consideration of the Divine Perfection , that is , from the immutability and simplicity of that operation whereby God conserves Motion in the Universe . For as God preserves Motion in any Body , by making that Motion which now is , to continue to exist , without any regard had to the state wherein the Body was before ; so he likewise continues to direct the Body moved to that Term , to which it is directed , at the present instant of time . But there is never any instant of time wherein it is not disposed to continue its Motion in a Right-Line , tho' before it was carried in a crooked line , and accordingly will pursue its motion in a Right-Line . This is clearly made out by DES CARTES in the 2d part of his Principles , Artic. 39. by the example of a Stone A , whirld about in a Sling AE , which tho' it be turn'd round in the Circle LABF , yet withal hath a tendency towards the Tangent Line ACG . For tho' the Stone first proceeds from L to A by a crooked line , yet nothing at all of that Obliquity can be understood to abide in it , whilst it is in the Point A. Because tho' the Stone be moved round , yet forasmuch as in every moment of time , parts may be assign'd that have no crookedness at all , it cannot be suppos'd to retain any obliquity , when the detaining force ceaseth . XVII . The Circular ▪ Motion of a Body proceeds from a Cause External . Hence it follows , that no Body of it self is moved in a Circular Motion , forasmuch as that always proceeds from an outward cause , which hinders the Body moved to pursue its Motion in a Right Line . Upon this account it is also that Wooden Bowls dashing against one another , are often whirld round ; and so Water likewise , when it is hastily poured into any Vessel : Yea , in every motion there is a circulation of Bodies , as shall be shewed hereafter . XVIII . Every Body that 's whirld round , endeavours 〈◊〉 recede fr●m its Center . Another Consectary is , that all Bodies circularly moved , do either actually recede , if they be not hindred ; or endeavour to recede , if they be , from the Center of their Motion : Because , as soon as the detaining force ceaseth , they begin to move in a Right Line . This is the reason why the Water doth not fall down out of a Bucket of Water as long as it is whirld round ; and that it strives to recede from the Center , we may gather from hence , because upon making a Hole in it , the Water runs out immediately . This Rule is of very great use for explaining of the Heavenly Phaenomena . Now this strife of receding from the Center , is either greater or lesser , proportionable to the Agitation , as ony one may plainly perceive in the whirling about of a Sling . XIX . And that which it strongest doth the more 〈◊〉 from the Center . Forasmuch therefore as all Bodies moved round , strive to continue their Motion in Right Lines ; it follows , that when many Bodies are so moved , every one of them must strive to move by the Tangent ACG of the Circle which it describes ; and really move by the same Line , as soon as the causes that have hindred it be taken away . It is visible also that the most strongly moved Bodies , must at the same time describe longer Tangents than those that are more weakly moved , and consequently more withdraw themselves from the Center of their Motion , and by the same means force the weaker Bodies to approach to the Center . XX. The Third Law of Nature . Another Rule is ; Whensoever the Moved Body , meets with another Body in Motion , if it have not as great a force to pursue its course by a Right Line , as there is in the other Body to hinder it , then it is turn'd out of its way , but yet continuing its Motion , loseth only the Determination of it . As it is evident in hard Bodies , which when they dash against another Body , do'nt therefore cease to move , but are reflected to the opposit part . But if one of them have a greater force than the other , then it pusheth it along , and as much of its own force as it imparts to this other Body , so much it loseth ; as when a hard Body meeting with a soft , by communicating its own Motion unto it , ceaseth to move and lies still . Wherefore we are not to suppose that when a Ball is thrown into a Heap of Sand , that its Motion is lost , but that it is communicated first to the Particles of Sand , next to the Air , and other neighbouring Bodies , notwithstanding the said communication be not visible to our Eyes . XXI . The Reason of the Third Rule . The Reason of this Rule is to be fetch'd from the First ; for seeing every thing inclines to continue in the state wherein it is , it will follow that that which is weakest must be changed by the stronger , as experience teacheth . XXII . From this Law arise those changes which happen to Bodies upon their meeting one another . From this Third Law ariseth almost all the changes we find in Bodies , caused by the various resistance and occurrence of other Bodies ; the effect of which occurrence will be different . First , according to the magnitude of those Bodies . Secondly , according to their Superficies , whereby they press upon each other . Thirdly , according to the swiftness and force of their Motion . Fourthly , according to the Rest and contact of Parts in that Body against which another dasheth , as shall be more amply shewed Part V. XXIII . How to measure the Quantity of motion . The Quantity of Motion in a Body is known partly by the length of the Line which the Body moved runs through ; partly from the quantity of its Bulk , which is transferr'd together with it . Thus a Square Body of one Foot , being moved the length of 10 Ells , is said to have a certain Quantity of Motion , which would be double , if an equal way , were added to the former length , which that Body shall run through . Again , if a Square Body of one Foot , should run through the space of 10 Ells , there would be a double portion of Motion in it , with respect to a Square Body of half a Foot. Whence it follows , that Bodies of different magnitudes , may have the same quantity of motion . Thus the Square Body of one Foot , and that of half a Foot would have the same quantity of motion , supposing the former to run through a Line of five Feet , and the other a Line of ten Feet . XXIV . Unequal Bodies may have an Equal quantity of motion . From hence it is evident , that to the end two Bodies of different magnitude may have an equal quantity of motion ; it is necessary that the Lines they run through , be reciprocally taken according to their bigness . As supposing one Body to be thrice as big , as another , it is necessary that the Line it describes by its motion , be only the third part of the Line , the lesser Body runs through . And upon this ground we may build these four following Maxims . XXV . The First Maxim. Two equal Bodies , have equal Quantities of motion , when in equal time , they describe equal Lines . XXVI . Second Maxim. Two equal Bodies have unequal quantities of motion , when in equal time , they describe unequal Lines . XXVII . The Third Maxim. Two unequal Bodies have equal quantity of motion , when in an equal space of time , they describe Lines , which are of a reciprocal Proportion to their magnitude . XXVIII . The Fourth Maxim. Two unequal Bodies have unequal Quantity of motion , when in equal time they describe Lines which are not reciprocal to their Bulk . CHAP. XVI . A Body can neither move it self , nor another Body . I. Motion is something distinct from the force that moves . TO know whether the Body moved hath its motion from it self , or whether it receives it from some outward Cause , we are to suppose two things in motion ; the one residing in the thing moved ; and the other in the mover : The former of these is the successive application of the Body moved , to the different parts of the Body that doth immediately touch it ; and the second is , the force that causeth this application . Motion in the thing moved is nothing else but a mode , as hath been said in the foregoing Chapter ; and consequently cannot pass from this Body into another , because every mode is inseparably tyed to its Subject . But motion consider'd with spect to the mover , is not a mode of the Body moved , because we find by experience that it passeth from that Body into another ; so that motion in the first Sense , is only modally distinct from the Body , whereas the efficient mover is Really distinct from it . II. Every Body is moved by another . It is evident therefore that a Body hath not its motion from it self , in the first of these Senses , because this motion consists in an Application which is Accidental to the Body ; and that every change which happens to any Subject , proceeds from an External Cause . Neither can it give it self the Efficient motion ; because this motion likewise is Accidental to the Body : Wherefore it follows that the Body must receive its motion from something that is without it . III. A Body may not be moved at all . Moreover , a Body connot be said to have that of it self which it may lose , without ceasing to be what it is ; now it is evident that every Body can wholly lose its Motion , without ceasing to be a Body : Wherefore we must conclude that no Body has any motion of it self . IV. If a Body were mov'd of it self , it would be in perpetual motion . If a Body of it self had the Power to move it self , this Power would be Essential to it , and consequently the Body would move always , and with the same force , which is contrary to experience , which teaches us that a Body sometimes moves more , and sometimes less , and sometimes not at all : Wherefore it receives its force to move from something without it . Now there is nothing without or external to matter but Spirit ; it is Spirit therefore that moves the Body , that is to say , God , who makes the parts of matter apply themselves successively , as to their outsides , to other parts that immediately touch them . Wherefore , since God cannot produce motion without acting , nor act otherwise than by his Will ; we must own that the moving Power is nothing else , but the Will God hath to move the matter . Whence it follows also , that as the Will of God is unchangeable , the quantity also of the moving force must always continue the same , and that if it change by encreasing or diminishing , this is not with respect to its Principle , but with respect to the different Bodies on which God exerts that Power , as we have already shewed . V. Neither can a Body move another Body . From whence we gather this Conclusion also , that no Body can move another . For how shall it move another Body , seeing it cannot move it self ? VI. The Power of moving differs from the thing moved . If you say that the Power of moving is not distinct from the thing moved , and that therefore it is not repugnant for a Body to apply it self to divers places : If it were so , it would follow that the force whereby God produceth motion in the Universe , must include the notion of Extension ; and seeing the same is not distinct from God , it would follow , that God is Corporeal . VII . Aristotle teacheth that no Body can be moved by it self . Wherefore , ARISTOTLE 8 Physic . Chap. 4. tells us , that no Body can be moved by it self , and consequently that Heavy and Light Things are not moved of themselves , but by others . For if they could move of themselves , they might also stand still of themselves ; for whatsoever is a cause of walking to it self , is also the cause of not walking ; wherefore if Fire of it self did move upwards , it would also be able by its own strength to move downwards . For it is not , saith he , agreeable to Reason , that those things should only be moved one way , that do move themselves . Moreover , how can it be that a continuous thing should move it self ? For as far as any thing is one and continuous , it is not capable of Passion : But as soon as it is separated , then one can act and the other suffer . Nothing therefore moves it self , because every thing is one and connext ; nor another , that is one continuous thing with it , but in every thing it is necessary that that which moves , should be divided from that which is moved . VIII . Bodies have only a Dispositive Principle to motion . And tho' ARISTOTLE in the place before quoted , seems to own a Principle of Motion in Inanimate Bodies , this is only to be understood of a Dispositive , and not of an Active Principle ; after the same manner as a Knife , Sword , Leaver , or any other Engines , are fit or disposed to act something , and do moreover act and move , when they are employ'd by an External Agent , but never can set upon a work of themselves . IX . The moving force is different from the moved . To make this the more evident , let us suppose that all the parts of matter from the Beginning were destitute of all motion , and to have lain mingled together , having Extension only . Which of all these think you , would have begun to move first ? Or what force could they have had to move either themselves or others that touch'd them ? Seeing therefore we can conceive nothing there , besides Extension , and that Motion is not an effect of Extension , we must say , that none of them could have the Power either of moving themselves or other Bodies . And what we conclude of the several parts of the matter contained in the Chaos , the same we must conclude of the whole : For whither could that vast Body move , seeing that it is indefinitely extended , and we can conceive no Bounds or Limits in it ? X. Supposing things to be without motion , there is nothing whence they should be moved besides God. We must conclude therefore , that no Body can move it self , since the force of moving is distinct from it ; nor another Body , since a Body that moves another must lose as much of its own motion , as it imparts to the other Body : But how shall it impart that which it hath not ? Wherefore God must be concluded to be the Author and Principle of all motion in the World. XI . How Animals move themselves . If you object , that Animals do move themselves , without requiring an External Cause by which they might be moved . I answer , that the motion of Animals depends on that of the Animal Spirits which being of a fiery nature , and carried through the Body like a Flame or Wind , do easily move the Members of it . For in the Animal Spirits , besides the thinnest and most moveable Particles of the Blood , is also contained much of the Coelestial matter , which because of the extream subtilty of its Parts , is perpetually and necessarily agitated . Forasmuch therefore as these Spirits being either simply moved or determin'd , or besides also altered , do easily diffuse themselves into the Nerves , which are extended from the first Original of Sense and Motion to the Muscles and parts to be moved ; it is not difficult to conceive how the Figure of the Muscles being changed by the Influx of Spirits , by their contraction or extension , do contract or extend the parts to which they are joyned , and consequently can be moved with innumerable different motions . CHAP. XVII . Concerning those Motions which commonly are ascrib'd to Nature's avoiding of a Vacuum . I. 'T is absurd to attribute knowledg to Bodily things . SOme are so liberal as to allow Knowledg indifferently to all things , and suppose Inanimate Things to be indued with a kind of Intuitive Perception . For if you demand of them why a Stone tends downwards , why Water gathers up it self into round drops , why Plants delight in such and such ground ; they have a cause ready at hand , viz. That a Stone tends to the Center of the Earth to rest there ; that Water affects a Round Figure , to preserve it self from its Enemy ; and that Plants delight in such a Soil , because they know their convenient Aliment ; and that Water mounts up on high , to avoid a Vacuum , and to preserve the Union that is between Bodies . Yea , we shall hear some boldly asserting , that the Earth for no other Reason , took to it self a Sphaerical Figure , than that it might be able , to resist the impulses , of the Heavenly Bodies ; and that as with an Army in Battle-array , it might be in a better condition to oppose its Adversaries which on all sides press in upon it . II. The improper Answer of some Men. Thus they tell us , that the Water mounts upwards in Hero's Fountain , because Nature abhors a Vacuum . Which way of speaking hath always appear'd very strange to me , and much like that , as when a Man being demanded why Coals are brought to London from the North parts of England , should answer , for fear of Cold : For these answers do not in the least satisfie the Question , which is not concerning the Final , but the Efficient Cause . Neither indeed can the Avoiding of a Vacuum be said to be the Final cause of the Waters Ascent ; First , because the Fear of a Vacuum is vain ; neither can Nature abhor that which cannot be ; and consequently a vain cause is ascrib'd to those Natural Effects , which are suppos'd to proceed from this fear . Secondly , forasmuch as this Fear is perpetual , and that there is a continual necessity that all Bodies be united together , therefore the Water ought to ascend perpetually , which is contrary to experience ; for we find that in Spouts and Pumps the Water ascends only to a certain degree , viz. to thirty one Foot and an half , where its stops , and can rise no higher . III. Why Water can only rise to a certain measure . Now the Reason why Water can only be raised to a certain height , is this , because the weight of the pressing Air , is then , as it were of an equal poise with the weight of the Water that is driven upwards ; so as that the force of resisting in the Water , becomes equal to the pressing force that is in the Air. Thus by Example , from the waters mounting continually in Pumps to the height of about 31 Foot and an half , above the Surface of the VVater in which the end of the Pump is dipt , they conclude that a Column of Water of that height weighs as much as a Column of Air of the same bigness , how high soever it may mount . IV. No Body is moved but by that which immediately toucheth it . Now to the end that the Cause of these motions may be the better understood , we 'l take for granted what hath already been proved , that no Body moves it self , but must be moved by another Body , that immediately toucheth it , pushing against it : And forasmuch as in all the Instances we shall here alledg , nothing is found besides the Air , that mucheth the Bodies moved , we must conclude that they are pusht on by the Air. Moreover considering that the Air always retains a great Quantity of watry Particles , which tho' disperst in divers places , do notwithstanding retain their own Heaviness , we cannot doubt that the Air is Heavy , and that by its weight it presseth the Bodies it lies upon . As may be seen in a Syringe , out of which if we draw the Sucker a little way , it of it self runs to the bottom again , because the Air that is above it , and immediately toucheth it , by its weight presseth it down to the bottom . V. In every Motion the whole Circle of Bodies moves . Moreover , we are to suppose , that seeing there is no Vacuum in Nature , when one Body is moved , the same must come into the place of other Bodies , and that which is driven out , must at the same instant take up the place of another Body , and so consecutively one after another , till the last Body enters into the place which was left by the first ; so that all Motions in the World are in some sort Circular . VI. How those Motions are performed which are commonly ascribed to the fcar of a Vacuum . These things so far understood , it will be easy to apprehend , that all motions which are ascribed to the fear of a Vacuity , are produced , for that some Body being pusht out of its place , does as much for the Body that is next to it , and so on , till the last Body enters into the place left by the first Body . VII . How the Water comes to ascend by a crooked Pipe. This motion is evident in a Bent or crooked Pipe , the shorter leg whereof BAD being put into the Vessel E , fill'd with Water ( for it is supposed that the Liquor which is in the part of the Pipe FD , as standing in a liquor of equal Heaviness , is not at all pressed by it , and therefore has no gravitation at all ) and the longer Arm BC being extended towards the Earth ; The Water that is inclos'd in the longer Arm , being heavier because of its greater Quantity , than that which is in the short Arm BAD , it must needs by reason of its Weight fall out of the Pipe BC into the Air , and by driving that out of its place , presseth the surface of the Water D , and makes the Water to ascend by the short Arm DAB , from whence it is carried to that place , which the Water falling down out of the Arm BC , hath forsaken . For seeing that the surrounding Bodies , have no place whither to withdraw themselves , they hinder the Water and Air from entring . But in the longer Arm BC whence the Water falls down , room is made , which the Water thrust down by the pressing Air , may take up at the same instant . VIII . How long this ascent and descent continues . And the Water runs in this crooked Pipe , as long as the shorter Arm BAD , is depressed , or not of an equal height above the surface of the VVater with the other Arm BC. But when both the Arms are of an even height , the outflowing of the VVater will cease , for being equal , the one cannot prevail over the other . And if then the same ascent and descent of the VVater should continue , it would follow that there must be a greater quantity of VVater in the Arm BC , than in the Arm BAF , which is contrary to our supposition . IX . Why the flux of the water is by little and little diminished . This shews clearly why the flux of the liquor from these Pipes is swiftest at the first , and afterwards decreaseth by degrees , because the Arm from whence the Water runs out , is at first higher than the other , which height being continually lessen'd by the efflux of the Water , the swiftness of the motion of the liquor must be proportionably diminished . And when both the Arms are of an equal height , the efflux must cease , and the Water be at a stand in them both . X. The Motion of Water through a Pipe cannot be perpetual . Wherefore no wonder that they lost their labour who endeavoured by the weight of the Water in a crooked Tube ABC to find out a Perpetual Motion . For observing that much Water was contained in the wider Arm A , and that the longer Arm C contained only a little Water , they hoped that the Water enclos'd in the Arm A , because of its quantity and weight , falling down through the hole F , would have sufficient force to press the Air G , and by means thereof also pressing the surface of the Water D , contain'd in the Tube E , might drive the Water through the longer Arm C , into the Arm A , and from thence falling down again through the Hole F , of the wider Tube , into the Tube E , might produce a perperual motion of the ascending and descending Water . XI . The Reason of the former assertion . But this was but a vain attempt of theirs ; for tho' all the liquor contain'd in the wider Arm A , be much more heavy than what is in the longer Arm C , yet because the Water that is contain'd in the Globe A , doth not with its whole Body press the subjacent Air , but only with that part of it which perpendicularly answers to the Hole F , it cannot remove the Air that is under it out of its place , and consequently neither can it repel the Water contain'd in the Arm CB , into the other Arm BA , because the Water in CB exceeds that in weight which in the Arm A perpendicularly answers to the Hole F. And the reason why the whole liquor which is contained in the Arm A , cannot press all the subjacent Air , is , because the other parts of the Water contain'd in the longer Arm , falling down perpendicularly , tend directly to the parts of the Arm HI , diametrically under them , and therefore no wonder if they cannot press the subjacent Air ; otherwise the Water FB , which is the lighter , would by its pressure raise up the heavier DCB , which no Naturalist can admit . XII . How water is drawn out ●f a vessel by a Filter . The same cause that makes the Water ascend by the foresaid crooked Tube , raiseth it likewise by a long shred of Cloth or Linnen . For first of all the piece of Cloth must be well dipt in the Water ; because as long as that part which hangs down without the Vessel is dry , no filtration will follow : Now the outward parts of Water , wherewith the Cloth is made wet , do so insinuate themselves between the Threads of it , as to make a kind of Tube or Pipe ( but into which no Air can enter ) and in the mean time the consequent parts of the Water , which are contained in the said Pipe , flow towards that part of the Cloth , which hangs lower down on the outside of the Vessel , in like manner as it happens in the crocked Tube or Pipe. XIII . How the Air is drawn into a p●●r of Bellows . Thus likewise we see how a Bellows by being distended , becomes filled with Air ; for seeing all places are full , and no Vacuity is found in the Universe , by distending the Bellows , the Air is driven out of its place , and finding no other passage , is forced to enter by the Nuzzle of the Bellows . XIV . How the Air ●n Breathing enters into our Breast . Respiration also is performed in us much after the same manner : For the Air entring into our Bodies , dilates the same by means of the Muscles of the Breast and Stomack ; whereupon the neighbouring Air because of its fluidity is easily turn'd out of its place , and consequently drives before it that also which is next to it , and thus the Air being pusht by the Breast , and other subsequent Air , is thrust down through the Winde-Pipe into the Lungs and Breast , and from thence also does return the same way . For Respiration is nothing else but an Alternate expansion and contraction of the Breast , by which the Air is thus driven to and from the Lungs . XV. Respiration cannot be performed by Attraction . By this experiment we may solve all , or most at least of those Phaenomena , which Philosophers have attributed to Attraction . For it cannot be understood how in Respiration the Air is suckt in , or by what means the Lips , Lungs or any other part of the Body can hook in the little Particles of the Air and attract them : But when the inward parts are dilated , we easily apprehend that at the same time they push away the neighbouring Air , which partly by this pressure , and partly by the Elastick virtue caus'd by the Agitation of its Particles , is driven into the Breast , and afterwards expell'd again , viz. when the Lungs subside again and are contracted . XVI . How the Flesh of mans Body comes to rise up into the Cupping glasses . We must not omit here the Experiment of Cupping Glasses , by means whereof the Flesh is raised in order to Scarification , and by force driven into them . For the Air being in a manner wholly expell'd out of the Cupping Glasses , by the intromission of Fire , it must thereupon be condensed , and its parts more closely prest together , than is consistent with its temperament : And therefore whilst the Subtil Aether crouds in betwixt its Particles , this External Air strives to dilate it self again , and to return to its natural state : And in this strife it presseth all the Bodies that do surround it , which as long as they strive against this force , no Bodies are turn'd out of their Places . But when the Air in the Cupping Glasses begins to grow cold , it hath no power any longer to resist the pressure of the Air striving to dilate it self , and therefore suffers the outward Air , by pressing the Flesh to thrust it into the Cupping Glasses , and to drive out the subtil matter which was contained in them through the Pores of the Glass . XVII . Much in the same manner as the water mounts upwards . Almost in the same manner as we see the Hand in a Pneumatick Engine ( after that the Air is exhausted out of the Recipient or Glass Vessel ) to swell and spread . And for the same reason , a Viol with a narrow Mouth , if the Air by sucking be drawn out of it , and afterwards you stop the Hole of it with your Finger , and so dip it into the VVater , it will become fill'd with it ; because the Ambient Air by its weight pressing the Surface of the VVater , drives it into the Viol , in which the Air that remains , being rarefied , for the want of the Air that is extracted , retains only a weak Elastick force , and so cannot oppose the pressure of the outward Air. XVIII . How Infants suck Milk out of their Mothers Breasts . Hence it also appears how improperly Infants are said to suck Milk on t of their Mothers Breasts : For if we consider how a Child draws Milk , we shall find that he doth not attract it by Sucking , but that it is driven into his Mouth : For the Child when it is about to Suck , doth dilate his Cheeks , and lay hold of the Nipple , wherefore the Air , that is next to his Cheeks must be driven out of its place , which pressing the Breast of the Mother or Nurse , drives the Milk into the Childs Mouth . And accordingly also Nurses use to press their Breasts , to faciliate the Expulsion of the Milk. And the same doth yet more clearly appear in Brute Animals ; for Lambs use to thrust their Heads against their Dams Dugs , thereby to squeeze out the Milk into their Mouths . CHAP. XVIII . Of the Determination of Motion both Simple and Compound . I. What the swiftness , Determination and Quantity of motion is . HAving explain'd the Nature of motion , and determined the Causes of it , it remains now that we discover its Properties , and the Accidents that accompany it . The inseparable Properties , of motion are Determination , Swiftness , and Quantity . For every Body that is moved , moves some way or other , runs through a certain Space in a certain time , and that Space may be divided into certain degrees . Insomuch that the respect which Bodies moved have to the Coast towards which they are moved , is called Determination ; the respect which they have to the Space they run through in a certain time , is called Swiftness , and this Swiftness distinguisht into degrees , that is , into equal Parts , is called the Quantity of motion . II. What the Determination of Motion is . The Determination of motion is that whereby the Body moved , is directed from the Term ● quo , to a certain Term : Such as is that disposition in a Stone , whereby it tends rather to the Center of the Earth , than towards any other part whatsoever . We shall the better understand its Nature by dividing motion into Straight , Circular and Mixt. Straight motion is a Translation by the shortest way that can be , viz. by a Right Line . Circular motion is a Translation about a Center and Axis . And mixt motion is that which is compounded of a Circular and Straight Motion , or of two straight ones , or innumerable other various motions . As the motion of a Knot in a Wheel about the Axletree , which is circular ; and also straight with respect to the way along which it goeth . III. How a mixt motion may be compounded of two straight motions . And that a mixt motion may be compounded of two right motions , is evident , when in the square Figure ABCD , the uppermost side AB , is moved with a straight motion towards the opposite side CD , and that at the same time the point A , of the upper side AB , be moved towards B , the other extremity in a straight motion . For by this means the point A , will not describe a Perpendicular AC , but a Transverse Line AD , yet a straight one , which Geometricians call a Diagonal , when it reacheth the opposite side CD . IV. Determination is a Mode distinct from Motion . These things being thus briefly laid down , I say , that motion consider'd in it self differs from Determination towards any Coast ; which I thus prove . Whatsoever can be taken away from any thing , without impairing of it , that doth not constitute the nature of that thing : But Determination may be taken away , the motion still continuing whole and entire : Therefore Determination doth not constitute the nature of motion . The Minor is thus proved : Suppose the Body A , to move towards B , and to be hindred by the Body B , from going any further , A according to the Laws of motion , will retain its own motion entire : But when it pursues its motion , it is no more carried the same w●y it was before , because it is hindred by the Body B : Wherefore its motion abiding entire , and having lost its first Determination , it will begin to move the contrary way : And therefore motion is distinct from Determination . V. The Determination of motion may be changed , without any change of motion . This may be proved ; for that motion , as was said before , is not contrary to motion , neither do they ever destroy one another in the same Subject ; whereas one Determination is contrary to another , and the one destroys the other : Wherefore they are different . For proof of the Minor , suppose the Body A , to be bigger than the Body B , and to dash against the Body B , either resting , or more slowly moved , A moving more swiftly , will alter the Determination of B. But if A and B be supposed equal in bigness , and that with a different Determination and equal swiftness they approach to one another , they will fly back from each other the contrary way , with the change of both their Determinations , whilst the same Quantity of Motion still continues in them . Moreover , Motion , and its Determination are two Modes , one whereof may be superadded to the other in the same Subject ; after the same manner as Swiftness and Slowness happens to Running . And therefore as Swiftness may be taken away from the running of a Stag , and is actually taken away , when he runs slowly : So likewise can the Determination of motion be easily changed , the motion it self still continuing . VI. Motion , and the Direction of it to a certain part , have different Causes . This will appear unquestionable , if we consider that the cause of Motion and Determination is not one and the same . For that force whereby the mover strikes a Ball with a Racket from C towards B , is not that , by which it is determin'd to tend this way rather than another way , but wholly diverse from it . The force of the Racket is that which moves the Ball , and could as well move it towards any other parts , as towards B. But the Determination depends on the Situation of the Racket , which so disposeth it , as to make it to be carried to B , and might have dispos'd it after the same manner , tho' it had been struck another way . And therefore the Determination of the motion of Bodies does not so much depend on the force of the mover , as on the Situation of the mover , and circumjacent Bodies . Wherefore it is manifest , that it may happen that the Ball being struck from C towards B , may be turn'd aside by meeting with the Earth EF , viz. by a change of its disposition , by which it tended towards B , the force of its motion all this while continuing the same , there being nothing common between them . VII . There is no Rest in the Point of Reflection . Those who do not distinguish the Determination , from motion it self , nor one Determination from another , do suppose that the Motion of Reflexion is contrary to direct motion ; and instead of owning no other contrariety , but what is between motion and rest , they assert , that between reflex motion there is a moment of rest , which is absolutely impossible . For this motion being interrupted , there would be no cause assignable , by which it might be excited anew ; but rather having obtained a new way of Existing , according to the Laws of Nature it ought to continue in the same condition , as much as if it had been at rest for many ages together . Neither is there any more necessity why it should begin to move again , than why a Triangular Body , which by motion is become Spherical , should not retain that Figure , as much as if it had receiv'd it from the beginning . Because every thing , as far as in it lies , continues in the same state wherein it is . VIII . Determination is either Simple or Compound . Determination is double , simple or compound . Simple Determination is that , whereby a Body after a simple manner tends to the Term to which it is directed . Such as is the Determination whereby t e Body A , from the same point A , by the right line AB , moves towards the Body EF diametically opposite to it . IX . A Body faling perpendicularly upon another Body , must be perpendicularly reflected . But when a Body falls directly and perpendicularly from A to B , on another hard and unmoved Body EF , it is evident that it must fly back by the same line BA , seeing there is no reason why it should tend to one side more than to another . Yea , forasmuch as the Determination of the Body A , is direct from A to B , and is simple , it is necessary according to the Laws of the unchangeableness of Nature , that it always continue in the same state , without altering . X. What compound Determination is . Compound Determination is , when the Body moved is after a compound manner directed to another Body : As when the Body C , from the Point C , by the Transverse Line CB tends to the Body EF obliquely oppos'd to it . For the Mode of this tendency is compounded of a Lateral Progressive motion CG in length , and a descensory CB in height : Because every motion that depends on two or more causes , is compound . Wherefore , a Bullet shot out of a Canon , doth not describe a straight , but a crooked line only , because two divers causes concur to its motion ; the one driving out the Bullet , which by degrees grows less , since the Bullet , as it proceeds , communicates its motion to the Air , which it thrusts out of its Place ; whereas the other motion , which is descensory , is encreased , daily experience teaching us that Heavy Bodies move more slowly at the beginning of their descent , than in the progress of it . CHAP. XIX . Concerning Reflexion and Refraction . I. What Reflexion and Refraction is . FRom what hath been said , may be easily gather'd what it is for a Body to be Reflected or Refracted . For since in Compound Determination the Body moved , meeting with another Body , tho' it keeps the same motion , yet only retains one part of its Determination ; it so happens that because it cannot go forwards , it suffers an Oblique Reflexion towards the opposite part ; but if it can , then Refraction . Hence Reflexion may be describ'd , The Regress or Return that happens to a moved Body , because of the meeting of another Body , which it cannot penetrate . And Refraction , is the incurvation , or change of Determination in the Body moved , which happens to it , whilst it enters or penetrates the Medium . II. Sometimes a Body is directly reflected . Thus if a Body moved directly , meets with another that is unmoveable , it must be reflected by the same Line by which it is directly moved , there being no cause to oblige it , to describe any other . For example ; if the Body G be mov'd directly by the Line GB , towards the Earth CE , which I suppose unmoveable , it will not be reflected by the Lines BA , or BF , but by the Line BG . The Reason whereof is , because the Determination of the Lines BA and BF is compounded , and that no cause can be assigned , that should oblige the Body G , which was moved with one only Determination toward the Earth CE , to retire from thence with two Determinations . III. Sometimes obliquely . But if the Body A be mov'd obliquely by the line AB , and that it meet with the Earth CBE , which is suppos'd unmoveable , it will be reflected by the line BF , which is diverse from the line AB . To prove this , draw through the Points A and B , the lines AC and HB , perpendicular to CE. This done , consider in the first place that the Body A , moving towards B , doth at the same time approach to the lines CE and HB , that is to say , that its Determination from A to B , is compounded of its Determination from A to C , and from A to H ; or that which is the same thing , of its Determination from above to beneath , and from the left to the right . Consider in the second place , that the Earth CBE opposeth it self to the Determination from A to H , and by consequence that the Body A , when it meets with the Earth , must take a quite contrary Determination to that which it had , by which in an equal space of time , it must advance equal quantities ; that is to say , if within a Minute , the Body A , descended by the line AB , to the line CBE , it must in another minute remount again from the line CBE by the line BF . IV. The Angle of Reflection is equal to the Angle of Incidence . But that we may know more distinctly to what part the Body or Ball struck , must rebound , let us describe a Circle from the Center B , at the Interval BA : For all the Points which are distant the same Interval from B , as A is , do meet in this Circumference . Now to be able particularly to determine this Point , let us with Des Cartes Chap. 2. Dioptr. erect three perpendicular lines AC , HB and FE , upon CE , so as there may be the same distance between AC and HB , as between HB and FE . Next let us say , that in the same space of time , in which the Ball hath been moved towards the right from A , one of the Points of the line AC , into B , one of the Points of the line HB , it must move from the lines HB , to some point of the line FE . For all the Points of this line FE , have in this respect the same Distance from HB , as all the Points of the line AC , and it is also as much determined to move that way as it was before . Now so it is , that it cannot arrive at one and the same time to any point of the line FE , and to some point of the circumference of the Circle AFD , save only at the point D , or at F , because there are none but these two , where they intersect one another : So that the Earth hindring it from passing towards D , we must conclude that it must infallibly move towards F. And thus you may easily see how Reflection is made , to wit , according to an Angle , which is always equal to that which is call'd the Angle of Incidence . As if a Ray , coming from the point A , to fall upon the point B , on the surface of a flat Looking-glass CBE , should so reflect toward F , that the Angle of Reflection FBE , be neither greater nor less , than the Angle of Incidence ABC . V. The Angle of Reflection is sometimes less than the Angle of Incidence . Yet it is not necessary that the Angle of Reflection , should be always equal to the Angle of Incidence , forasmuch as sometimes it may be greater and sometimes less . For suppose the Body A , to descend by the line AC , towards the Body DE , and to reach the Center C , in the space of one Moment ; and that the swiftness of this Motion ; be diminished one half in the Point of Contact C ; it is evident that the Body A , being reflected from the opposite Body DE , in its Center C , cannot in one moment run through an equal line , since it is supposed to have lost one half of its swiftness , and therefore spending two Moments , in running through an oblique line , it will by Reflection arrive at the Point of the Circle B , and will there make the Angle of Reflexion BCE , less than the Angle of Incidence ACD . This Reflexion is commonly call'd from a Perpendicular , because the line of Reflection BC doth more deviate from a Perpendicular , than the line of Incidence AC . VI. When the Angle of Reflection is greater than the Angle of Incidence But if the Body B , be carried to the opposite Body DE by the oblique line BC , and arrive at the Center C , in the space of two Moments , and that its Motion be encreased in the point of Contact , so as to become twofold swifter , it is evident that the Body B , rebounded by the opposite Body DE , must in the space of one Moment , in its ascent run through ●an equal oblique line , and arrive at the point A of the Circumference of the Circle ; and so the Angle of Reflection ACD , will be greater than the Angle of Incidence BCE . And this Reflection is call'd Reflection to a Perpendicular , because the line of Reflection AC , doth less deviate from a Perpendicular than the line of Incidence BA . VII . What Refraction is , and how ●t is made . What has been said is sufficient to explain the nature of Reflection : We proceed now to Refraction , which is when a Body passing from one Medium to another doth deflect from the straight line it described . So that by the Refraction of Motion nothing else is understood , but the Deflection or turning aside , which a Body suffers in passing from one Medium into another . For the understanding of this Refraction , we are to consider , first , whether the second Medium resists the Motion more or less than the first , and whether the Body moved do meet it directly , or obliquely ; for if it meets it directly , whether it resist more or less , it is without doubt , that the Body moved must in no wise change the determination of its Motion , in penetrating of it . VIII . A Body directly falling int●● medium ●●●fers no Refraction . To prove this , let us suppose the Body L descending in the Air by the Perpendicular line LB , and that it directly meet the Water which is under the surface CBE , which separates the two Mediums : This being so , I say that the Body L having pierced the surface CBE , will tend directly towards G , because the Water that is under that surface , doth resist it equally on all sides , and that there is nothing but the inequality of that resistance , that can make it turn aside . IX . But if it falls obliquely it i● refracted . On the contrary , if the Body moved meets the second Medium obliquely , then of necessity it must deflect either to the right or left , according as the second Medium resists its Motion more or less than the first ; as by example , let us imagine a Ball struck with a Racket from A , obliquely to B , to meet there not with the Earth , but with the Water , whose surface is bounded with CBE , the Ball in this case doth not directly tend to D , but towards I , and this bending or deflection , which is measur'd by the Quantity of the Angle BDI , is call'd Refraction . X. The cause of Refraction . The Cause of this Refraction is the Resistance it meets with : For seeing that every thing as much as in it lies continues always in the same state , we can give no reason why any Body should deflect from the Straight way in which it began to move , but because it meets with some hindrance in that part from whence it rebounds . Thus when the Body A , after it is arriv'd to the Point B , is turn'd aside , and tends towards I , we must conclude that it meets with more resistance towards the left side of B , than on the right ; and if it be turn'd aside towards D , that it finds a greater Resistance from the right side of B , than from the left . And therefore if we perceive that the Water doth more hinder the motion of the Ball than the Air , we may easily judge that the Ball which in the Air is moved from the Point A to the Point B , that from thence it may pass into the Water , must pursue its course towards I , and deflect from a Perpendicular . XI . How a Body comes to be variously refracted . This may be apply'd to all Bodies and all the Mediums they pass through . Wherefore this may pass for a Maxim , that as often as a Body moved , passeth from one Medium into another , that doth resist it more , it must be refracted , by declining from a Perpendicular . And that on the contrary , when it passeth from one Medium to another where it finds less Resistance , there it must deflect towards a Perpendicular . XII . It is requied to Refraction that a Body fall obliquely upon another Body I have already said that it is necessary to Refraction that the Body fall obliquely upon the surface that separates both Mediums , that so it may be deflected or turn'd aside . For if it should proceed Perpendicularly , without any Declination , seeing it would not be hindred on the one side more than on the other , from proceeding in a straight line , it could not suffer any Deflection , and consequently must continue its right motion , as hath been said . XIII . Requisits to determin the quantities of Refractions . To Determine the Quantity of Refractions , we must attend to the particular constitution of Bodies , whether they do more or less resist the passage of Bodies moved . For suppose we that the line CBE separates two Mediums , the upper whereof is Air and the undermost Water , and that the Water doth as much again as Air resist the motion of the Ball A. Suppose we likewise that the Ball A , having past the oblique line AB in one moment , to meet with the Point B , there obliquely to enter the Water : And that neither the Bigness , Weight , or Figure of the Ball do hinder it from so doing ; Yea , and that its motion in the Air hath been always equal , and that having lost the one half of its swiftness , by meeting with the Water , it loseth now no more throughout its whole Course , how deep soever it may enter the Water ; because this is nothing to the purpose , since the Deflection happens only in the Surface , and the Water , which resists equally on all sides , can only make the Ball to spend a greater or less space of time in its motion , but cannot make it to deflect from the Line , which it had begun to move in . XIV . How much the Motion of a Ball is retarded by entring the Water . These things being observed , that we may know what way the Ball A must take , we are to consider that tho' the motion of the Ball , be lookt upon as simple , this doth not hinder but that its Determination in the line AB , with respect to the Surface of the Water , is compounded of two other motions , the one whereof presseth it from AF to CE , and the other at the same time presseth it from the left AC , to the right FE , so that both these together lead it to the Point B , by the right line AB . XV. Where the variation is in the Body moved . Moreover we are to observe , that of both these Parts , whereof we understand that this Disposition consists , the one only is changed by the Surface of the Water , viz that which drives the Ball downwards , whereas that which pusheth the Bal l towards the right hand continues still the same . XVI . How much the Balls motion is fore ▪ slowed when it passeth through the Water . Having therefore described the Circle AFD from its Center B , and having describ'd upon CBE three Perpendicular Lines AC , HB , FE , so as that the space between them FE and HB , is the double of that which is between HB and AC , we shall find this Ball will go on to the Point I : for seeing that the Surface of the Water CBE , doth exactly take away one half of its swiftness , it must take up a double proportion of the time in which it passeth from A to B , in passing from B to any point of the Circumference AFD . And seeing nothing is lost of the Disposition whereby it was carried towards the right hand , in the double proportion of that time , wherein it proceeded from the line AC to HB , it must go twice the length towards the same part , and consequently approach to some point of FE at the same Moment in which it draws near to some point of the Circumference of the Circle of AFD , which would be impossible if it did not advance to I. XVII . The more obliquely a Ball falls on the Water , the more is it destected . We are also to take notice that the more obliquely a Ball dasheth against the Surface of the VVater , the more it is turn'd aside by it ; so that if it be directed to right Angles , as if it were struck from H to B , it proceeds in a right line without any Declination to G , as hath been said already . But if it be driven along by a right line , as AB is , and lie so obliquely on the Surface of the VVater CBE , that the drawn line FE , cannot intersect the line AD , then will it not penetrate the VVater , but will rebound from the Surface B into the Air towards F , after the very same manner as if it had lighted on the Earth . As we see in those Stones wherewith Boys make Drakes in the Water ; and as Bullets which ( according to the Relation of those who have been in Sea fights ) being obliquely shot out of Cannons rebound from the VVater , and hit Men standing on the Decks . CHAP. XX. Of the Force of Acting and Resisting . I. The force of acting and resisting taken in a twosold sense . THe force of acting and resisting may be understood two several ways , either Metaphysically , for the Faculty or Power which any thing hath to act or resist . And this is nothing else but a Non-Repugnance to act or resist . So he who saith that a Needle can prick , thereby means nothing else , but that Pricking may Coexist with a Needle . Or else it may be taken Physically for Reaction , as when any thing that is moved upwards , is driven down by some other Cause , and thus resistance is called Positive ; as when two Bodies in motion , meeting together , beat back one another ; as two Bullets or Bowls meeting together , by their contrary Determination . Or it is also precisely taken for the force it self of Resisting , as when a House resists the Wind , or a Stone the Ball that is cast against it . And this is commonly called Negative or Formal . And it is of these two that we enquire here , viz. to know wherein the force a Body has to act upon another , or to resist it , doth consist . II. Wherein the Power of Acting or Resisting doth consist . All the Power any Body hath to act upon another , and every Faculty , whether Positive or Negative , of any Action , consists in this alone , That according to the forementioned Law of Nature , Every Body , as far as in it lies , continues in the same state wherein it is , whether in Rest or in Motion ; because every state of Bodies may be referr'd to one of these . So that those Bodies which are joyned together by Rest , have a power to hinder themselves from being separated , as well as those that are separated , have a Power to continue so ; and they that are moved , have a Power to continue their motion , according to the same degree of Swiftness , and towards the same Coast : As that which Rests in any place , hath a force to abide there , and to preserve its Rest . And this is the only cause of the motion of Things that are cast or thrown into the Air ; concerning which we have more reason to enquire how they come to cease from motion , than how they continue it so long as they do . III. This Force ariseth first from the Bigness of the Body . Now this Force may be attributed to several Particulars : As first , to the Magnitude of the Body in which it is found . For it cannot be questioned , but that a Great Body exceeds a Less in the faculty of Acting and Resisting , because in regard to the Parts of which it is compounded it hath more Motion and Rest ; and seeing every Body hath a proportionate Affection answering it , therefore the Quantity of these must be answerable to the bulk of the Body . Hence is that common Saying amongst Naturalists , that a thing of greater Quantity , hath the greater Virtue : Which Virtue is to be esteemed according to the force of Motion that is in the whole Body , or its firm adhering and abiding in a place . Thus Fire , the more it is extended in bulk , the more violently it burns ; and the more fixedly any Bodies continue in one place , with the greater difficulty are they thrust out of it . Thus Round Bodies are the strongest both in Action and Resistance , as appears in Pestils , Milstones , Cylinder s or Rowling-Stones , and other such like Instruments , which are the more proper to bruise Bodies , and making them smooth or even , because their force is altogether directed to one Line . Thus also a Hammer , with a long Handle , strikes the Anvil with a greater force than that which hath a short one . IV. Secondly , from the Bigness of the Surface . The Power of Acting and Resisting is also taken from the largness of the Surfaces of Bodies ; for the broader the Surface of two Bodies is , the more firmly do they cleave together ; as appears in two Wooden boards , well plained , lying upon one another : Whereas on the contrary , where the Surfaces are narrow or little , by so much the less firmly they stick together . Thus Sphaerical Bodies less stick together , because their Surface is the least of all Bodies with respect to their bulks , and they touch each other only in a Point . And certain it is that Lead made up into a great Bullet , is more solid than that which is distended into a thin Plate , or made hollow . Wherefore the greater quantity of Matter is contained under a little Surface , the more solid it is , and of the greater efficacy to resist ; as is evident in Gold , Lead , Iron , and other Metals , which being once put into Motion , retain a greater force to preserve and continue it , than either Wood or Stones of the same bulk or figure . But on the contrary , Triangular Bodies , and such as have more Surface than other Bodies proportionably to their Extension , are more difficultly moved , and have less force to continue the same , or to resist other Bodies . V. Thirdly , from the Swiftness of Motion . The said Faculty of Acting and Resisting may likewise be estimated , from the swiftness or slowness of Motion . For a little force resists Bodies that are swiftly moved ; as when we lash the Water with a Rod or Wand , we find the Water to resist the Rods entrance . Because ( as hath been hinted heretofore ) the Strife of Material things in Acting and Resisting , depends on the determination of the Motion towards some certain Part or Coast , and its meeting with a Body resting there , or otherwise moved . And a Body is then taken to be otherwise moved , when it is either moved more slowly , or another way . VI. Fourthly , from the Meeting of Bodies . This Force may also be gathered from the nature and contrariety of the Mode or Manner whereby divers Bodies meet with one another . For according as they are variously oppos'd to each other , so they have a different force of Acting and Resisting . Thus a Stone slantingly thrown on the Surface of the Water , so as to leap from it , cannot divide the Top of the Water , as if it had been downright cast into it . VII . A threefold Difference is incident to Motion . From these Four Particulars , to which all Action and Resistance of Bodies may be referr'd , we may determine how Bodies do increase , or diminish their Motions , or change the determination of them , ( for there is this threefold difference in Motion ; ) only we are to observe how much Force there is in every Body , either to move or resist Motion , and certainly conclude , that that which is strongest , always takes effect . Thus the Motions of Great Bodies have their Force from the Agreement of their Parts , though their Motions have but few degrees . So Stones , and even large Buildings , are oft forc'd to give way to a River that runs but slowly . And upon the same account , in other Bodies also the motion may be strong , tho' it be not swift : And on the contrary in less Bodies , there may be a considerable swiftness of motion , and not any great force . As if the Body A ( for Example ) should be moved as swiftly again as B , and the Body B should exceed A in bigness in a double Proportion , in this case ▪ we must estimate as much Motion to be in one , as in the other ; because the Extrusion which is found in the Greater Body , is by its bulk equivalent to the Intension of Motion in the other . VIII . That which is strongest always obtains its effect . Now in the opposition or meeting of Bodies , this Rule always holds good ; VVhatsoever exceeds another thing in strength , obtains its effect , whether it be in moving another Body , or in resisting its Action . And therefore of those things that tend to the same place , if it be not large enough to contain them all , the strongest only do get thither , leaving the weaker behind them . Thus the most lively and vehemently moved Particles of the Blood are received into the Cavities of the Brain , the weaker being hindred by the stronger from arriving there ; because the Passages of the Brain are too narrow , than that all the Particles of the Blood can get up thither . CHAP. XXI . Of the State of Bodies ; and first those that are Hard , Fluid , Frangible , Friable , Soft , Ductile , and such as may be cut or slit . I. Whence the Hardness of Bodies proceeds . AMongst the Principles of Natural things , MOTION and REST only are opposed to each other , not privatively ( as some would have it ) but contrariously , as two Modes really distinct . For Rest or Quiet is not a Privation of Motion , but a true Form , whereby Stable and Hard Bodies are distinguish'd from such as are Fluid , and whence they receive the force of Acting and Resisting . For those Bodies are accounted Hard , whose Parts by a firm Union lye still together ; or whose Parts do so closely cleave together , that they cannot without difficulty be separated . Which close Union is perceptible to the Senses ; for if we touch any of these Hard Bodies with our Hands , or any other part of our Body , they resist them , and oppose their entrance ; as we see in Marble , Wood , Stone , &c. for if , when they are handled by us , they give way , we should perceive no Sense of Hardness at all ; as appears by the Air , which is not felt by us , because it gives way to our touch . II. What is the Cause of the variety of Hard Bodies . The Hardness of Bodies is various , according to the variety of Rest ; for wheresoever there is more of Rest , there also is more of Hardness ; and so contrarily . Clay , when the Water is evaporated from it , grows hard , because the Rest of its Parts is by this means increased , its Earthy parts being delivered from the Agitation of the Fluid parts , interpos'd between them ; whereas Wax being heated , becomes soft , because the Rest of its Parts is lessened , by reason of the Oily Particles , which being benum'd before , are by the Heat put in motion . III. What Hardness is . When we say that Rest is the Cause of Hardness , we mean the Formal , not the Efficient Cause ; for the Efficient Cause of Hardness consists only in the force wherewith the Air , or other Subtil Matter , compresseth the Parts of Hard Bodies . To the end therefore that we may have a distinct Idea of Hardness , we must conceive it to be nothing else , but the Rest of many parts of Bodies , caused by the Pression of the Air , or the Subtil and Aethereal Matter , which acting from without , drives these parts inward in such a manner , that they cannot be separated afterwards , without making us sensible of their Resistance . IV. What is the Cause of the Fluidity of Bodies . Fluid Bodies , on the contrary , readily yield to the motion of other Bodies , and therefore do not resist our Hands when we touch them , as appears in the Water and Air. The Cause of which difference consists only in Rest and Motion : For if we enquire why some Bodies cannot but by force be thrust out of their places ; whereas others without any difficulty yield the place they are in possession of , to others , we shall find that the Reason is , because their Parts , which resist those Bodies that approach to them , lye still and Rest ; whereas the Parts of other Bodies , that without any force do leave their places , are in motion . So that Hard Bodies are such , whose Parts lye still and cohere together ; but Fluid Bodies are divided into many little Parts , which are variously moved . For the Parts of Water , or any other Liquor , are agitated every way by the Subtil and Aethereal Substance : And accordingly those Bodies are called Fluid , whose Insensible parts have such various Motions . V. How it appears , that the Parts of Fluid Bodies are agitated every wa● . Now that the Parts of a Fluid Body are moved , and that equally every way , appears from hence , that in what part soever of a Fluid Body we do move our Hand , or a Stick , it always goes on with the same easiness , which could never be , if the Determination were stronger one way , than it is another . Tho' it cannot be deny'd , but that some Resistance is found in a Fluid Body , if we swiftly lash any thing against the Parts of it ; because a Body slowly moved , comes under the Notion of a Body at rest , when compared with a Body that is much more swiftly moved , and consequently will resist it . VI. Fluid Bodies hav no certain figure , as Hard Bodies have . Hence it is that the Figure of Fluid Bodies is undetermin'd , because they are so easily divided and diffus'd , that they cannot keep themselves in their own bounds . But Hard and Stable Bodtes being hard to be divided , easily retain their Figure , and are easily comprehended within their own limits ; as appears in Lead , Iron , Silver , Gold , Wood , Marble , &c. which according to their several degrees of Solidity preserve their figure and Bulk . That therefore we call a Fluid Body , whose Parts being divided into many small Particles , and these again into less Indefinitely , are variously agitated . But that is called a Hard Body , whose Parts by Rest do so closely cleave together , that they cannot be separated , but by a Force sufficient to overcome their coherence . VII . The various kinds of Fluid Bodies . The smaller and lighter the Parts of any Fluid Body are , the greater is its Fluidity ; and the thicker and more Branchy they are ( if Contact doth not hinder ) so much the less is it . Hence arise the diverse kinds of Fluid Bodies , according as by the lightness and smalness of their Particles , they are more , or according to the Thickness and Branchiness of them , less yielding to the Caelestial Matter , which is the Cause of their Fluidity . Upon this account it is that the Air is more fluid than the Water ; because the Parts of Water , tho' they be smoother , yet are thicker than those of the Air. And Water is more fluid than Oil , because the Parts of Oil are more thick and branchy : Lastly , Oils are more or less fluid , as their Particles are more or less thick and branchy . VIII . How Fluid Bodies are said to be in Motion . When I say that the Nature of Liquid Bodies consists in Motion , it is not so to be taken , as if the whole Liquid Body were moved out of one place to another , for this happens also to Hard Bodies : For a Bowl of Brass is easily rowl'd from one end of a Table to the other , and for all that persists to be a Hard Body ; but in this , that the Particles into which they are divided , are moved and variously agitated , some of them being tost to the Right , others to the Left ; some upwards , others downwards ; some forwards , and others backwards : Which Motions of the Particles must be different . For if they were all of them carried one way , they would in a short time cling together , and make up a stable or hard Body . IX . Why Ice is carried with a greater Force , than the Water . And tho' the Course of a River be directed to one particular part of the Land , it does not therefore lose the Name or Nature of a Fluid Body ; forasmuch as the various Motion of the Particles of the Water is preserved , notwithstanding the said Course of the River , as much as in a still standing Water . Hence it comes to pass , that Ice driving on the top of the Water , because of the firm clinging together of its Parts , doth with a greater force pursue its way , and with more violence set against the Banks , than the Water it self which carries it ; because the Parts of Water being tost with various Motions , weaken the force of it , and therefore cannot tend with that vehemence to one part , as the Ice , which is a solid Body , doth . By which Example it is evident , why Fluid Bodies easily give way to other Bodies , but solid Bodies not ; because Fluid Bodies are always in Motion , and therefore do not oppose the entring of other Bodies into the places they are in , but readily and easily quit them . Whereas Hard Bodies rest , and according to the Law of Natures immutability , strive to continue in the state of Conjunction , except they be disturbed by some strong Motion . X. How the Parts of Solid Bodies are joyned together . This Sentiment will not please some Philosophers , who suppose no two Bodies can be joyned without some intervening Third , distinct from them both ; which they imagine to be as the Glew that holds the parts together , that the Union may be the more firm : But since nothing is to be admitted in Natural Philosophy , which we are not convinc'd of by Reason , we must consider first , what kind of Glew this can be , before we appropriate it to this use . Without doubt it must be either a Substance , or the Mode of a Substanee , seeing that amongst Natural things nothing else is to be found besides Substances and their Affections . If it be supposed to be a Substance , it cannot be understood why the Parts , which because they are Substances , cannot be united by themselves , should yet stand in need of an adventitious Substance to unite them . If it be a Mode , then without doubt none can be more properly assign'd to this purpose than Rest , since that which makes the Parts to be united together , must be most opposed to Motion , by which they are divided from one another . For opposit Things must have opposit Principles ; but nothing is more contrary to Motion than Rest , as being the contrary Affections of Material Substances . XI . The Motion of the Particles of Fluid Bodies , is discernible from their Effects . You 'l say , How may we know that the Parts of Fluid Bodies are in continual Motion ? I answer , That tho' the smalness of those Particles doth not permit us to discern their Agitation , yet may the same be easily discovered by the Effects . There is no body but perceives , that some parts of VVater , evaporate in boyling , and that in the Summer time Ponds are lessen'd or dryed up , which could not be , but that some Parts of the Water , being separated from one another by Motion , steam away into the Air. Moreover , how else comes it to pass that the Particles of VVater , do so readily mix together ? Or , how could they insinuate themselves into the Pores of thick Bodies , if their Parts did cling together by mutual Rest ? XII . T●● Motion 〈◊〉 Parts 〈◊〉 their Division . For the Division of Parts depends on their Motion , Agitation being that which separates one thing from another . This is very evident in Flesh , which is soon corrupted by the Air , the Particles whereof being agitated either by the Sun , or some other way , thrust themselves into the Pores of Flesh , and by dilating of them and spoiling their Natural situation , do at last dissolve and putrifie it . The ready and thorough mingling of Liquors discovers the same thing , it being evident that this easie mingling cannot be done without Motion , whereby the Parts of two Liquors , as for Examples VVater and VVine , run together . XIII . Bodies would not be distinguish'd from one another , if some were not moved . Besides , what diversity would there be amongst Bodies , if all their Parts lay still together , and were equally united ? Cold water would not differ from Ice ; Crystal and Milk would be the same thing ; nor would any Cause be assignable , why Crystal resists our touch , or why Milk yields to the approach of Hard Bodies . XIV . Parts of a twofold sort are found in Liquid Bodies . Wherefore we may conceive twofold Parts in Liquid Bodies ; some at it were flying , by reason of their swiftness , such as the Parts of Smoak , the Steam of boyling VVater , and Flame are , which are tost so forceably that our Senses can discern their motion : And others , as it were , creeping , because of the slowness of their motion ; as the Particles of Oil , Milk and VVine , whose motion is so slow and leisurely , that our Senses cannot perceive it . So that when it happens that one Liquid Body is not sufficient to dissolve another , or that it can exercise its force more upon one Body than another ; the Reason thereof chiefly is , because its Parts are more or less agitated , or because the Pores of those Bodies are not open alike . XV. What Soft Bodies ar● ▪ Soft Bodies approach to the Nature of Liquid , and are such whose Particles do not cling so close and firmly together , as the Parts of Hard Bodies , nor are agitated with so swift a motion as Fluid Bodies , but partake of both their Natures , being middle things between fluid and stable Bodies , such as are Sand , VVax , &c. The softness of Sand is caused , for that something intervenes betwixt their separated Parts : And VVax is soft , because its Particles terminate in flexible branches , which twisting together lightly , joyn the said Parts . Frangible , are reckon'd amongst Hard Bodies . Of Hard Bodies some are Frangible , others Friable . For whatsoever can be broken must have such a degree of stiffness , that its outward Parts when struck , may be neither dilated , nor admit any ingress of parts into parts ; but that the surfaces being broken , the inward parts likewise be divided and broken asunder . Of which Nature are Flints , Earthen Pots , Stones , and the like , which according to the diversity of their contexture , are more easily or hardly broken . XVII . Friable Bodies . Thus Friable Bodies must have so much stiffness , that they cannot be stretched or bended ; but upon any force pressing upon them , do crumble into Dust . Of which Nature is the Sand-stone , which is easily dissipated into small parts , and those again easily crumbled to Dust . XVIII . Ductil Bodies resort under Soft Bodies . Amongst Soft Bodies are reckoned those that are commonly called Ductil ( that is , Bodies that suffer Drawing or Extension ) such as Gold is , one grain whereof may be drawn into a Thred of four hundred Foot long ; and consequently one Ounce to the length of 230400 Foot. The Cause of which vast discussion is commonly attributed to its extream Compactness , the Thinness of its Parts , and their intimate Union and Connexion . Of which we shall speak more at large hereafter . XIX . Bodies that may be cut or slit , belong to Soft Bodies . Some reckon Bodies that may be cut or slit , also amongst Soft Bodies ; because whatsoever is cut , must have so much flexibility , that the Part which is prest ( suppose with an Ax ) can give way downwards , at the same time that the Collateral parts yield to the dividing Instrument . And whatsoever can be slit , must be so flexible or bending , that when the Parts in a certain place , begin to be pull'd asunder , a Compression may be successively made , in whatsoever places the rest are to be gradually separated from each other . VVood is said to be Cut , when it is divided Cross-wise ; but to be slit , when divided Long-ways , or with the Grain . CHAP. XXII . What Loose and Close , Rough and Smooth , Contiguous and Continuous Bodies are . I. Whence proceeds the Loosness or Closeness of Bodies . AS Stable and Fluid Bodies are constituted such by Rest and Motion ; so Loose and Close Bodies are made such by their Figure and Situation , not outward , but inward . for the Loosness or Closeness of Bodies , is not to be considered according to the outward Space in which Bodies are dilated or contracted ; seeing that a Body , whose Essence consists in three Dimensions , cannot take up a greater Space at one time , than at another ; but according to the Intervals which are understood to be betwixt their Parts ; and which are said to be distended , when they are fill'd with any foreign Matter ; or to be contracted , when by Removal of that Matter , they are either lessened , or quite taken away . II. Loose Bodies are made such , by the Ingress of Matter ; Close Bodies by the Egress . For we must not imagin , as many do , that the parts of Loose Bodies are so separated from one another , that nothing extended comes between them ; For no such Vacuum can be in Nature ; but that the said Intervals are fill'd with other Bodies ; as is apparent in New-bak'd Bread , which being put into Milk or VVine , presently swells up into a much greater bulk ; because the Pores of the Bread are distended by the intruding particles of the VVine or Milk. So that all the New Extension we find here , is not to be attributed to the Substance of the Bread , but to the fluid Body that hath insinuated it self into the pores of it . Which is evident not only to Reason , but to the Senses themselves : For if a man behold the Steam that riseth out of a Pot of boyling VVater , or the Smoak that proceeds from a Torch at a distance , he will suppose the parts of them to be contiguous ; but when he comes nearer , and views them more wishly , he will find that there is neither Continuity nor Contiguity between the parts of them , but that they are separate from one another , by means of a foreign intervening Matter that divides them . III. Examples of Loose and Close Bodies . A Body becomes close , when the parts of it being nearer together , leave few Intervals , or none at all . Of the first sort are Snow ▪ Hay , and Wool , when they are compress'd , as also a Sponge , when the Water is squeez'd out of it ; for then by the expulsion of the Liquor , its Pores are narrowed , and few Intervals are left in it , to receive any outward Bodies . Of the latter sort are those Bodies , which have no Pores at all into which any External Body can enter ; and when it is so close , then it cannot be further condensed by any Power of Nature . IV. What Rough and Smooth Bodies are . As with respect to the Figure and Situation of its Inward parts , a Body is distinguish'd into Loose and Close ; so with regard to their Outward figure and situation , Bodies are said to be Rough or Smooth . Which Modes are of great efficacy in Natural things ; as appears in a Knife , wherewith the Hardest Bodies are cut ; and in a Pen , with which an infinite variety of Characters may be made . Rough Bodies are such whose superficial Parts are unequally disposed , so as that some are prominent and others deprest ; as Rusty Iron . But Smooth or Polish'd Bodies are such , whose Extream parts are equally situated , as Ice , a Whetstone , &c. Smooth Bodies , because of their Surface , have more force to Act or Resist , than Rough Bodies . For a Sword , whose Edge and Extream parts are polish'd and even , cuts deeper than another Sword of the same bigness that is Rusty ; and a Ball rebounds more strongly from polish'd Bodies , than from rough . V. All Bodies are not Smooth , which appear to be so . Yet we are not to imagin , that all those Bodies in which neither our Touch nor Eyes can discover any inequality , are altogether smooth ; forasmuch as even Glass and Crystal , which appears very smooth , have a rough Surface . For tho' Glass be made of Salts , which by Melting are resolved into very small Particles ; yet because those Particles still retain their former figure , they can never make a polish'd Surface . What appears to our Eye more smooth than Paper ? And yet by the help of a Magnifying-Glass , we perceive it to be very rough and uneven . Hence it is manifest , that in what part soever of the Medium the Eye be placed , it receives the various Rays , which come from and represent the Object . What a Contiguous and Continuous Body is . The two Remaining Species of Bodies are Continuous and Contiguous . A Body is said to be Contiguous with respect to the situation it hath amongst other ambient Bodies . Thus a Tree surrounded by the Air , is said to be Contiguous to it . And accordingly a Contiguous Body is thus defin'd by Plato in Parmenides : That which is to touch something , plac'd by it self , must be next to that which is to be touched ; neither is there any Third thing that is a Medium between both these . A Continuous Body is that which besides the situation it keeps amongst Circum-ambient Bodies , becomes united to them , and by Rest is joyned with them . Thus a Stone is said to be a Continuous Body , being considered whole and undivided , and before any change happen to it by Motion . But this Contiguity of Bodies is not in all their parts , but only in those that are Insensible , since such only have an immediate Contact with one another . VII . Wherein the Nature of Contiguity and Continuity consists . The Continuity therefore of Bodies consists in this , that their parts do cleave together by an Immediate Connexion , and rest together . So that Continuous Bodies cannot be dissolved , but by such a Motion as prevails over the Rest of their Parts . The Contiguity of Bodies consists in this , that their Extream parts lying still together , nearly touch one another , yet so as that a most thin subtil Matter flows and runs between them ; and by reason of this Interfluent Subtil Matter , the parts of Contiguous Bodies are more easily separable . CHAP. XXIII . That there are Pores in Hard Bodies , as well as in those that are Fluid and Soft . I. Supposing Bodies to be moved ▪ it is necessary that there be Intervals or Passages left between them . THo' it is not denied , but that the VVorld was Created in the Beginning with all that Order and Beauty which we find it to have at present , and that all the Bodies contained in it had the same perfection which we see they now have ; yet in order to our more acurate understanding of the State of Bodies , it will be of use at first to consider all Matter as one undivided Lump or Mass , and afterwards conceive the same distinguish'd into parts , by the Motion impress'd upon it by God , out of which Parts all Bodies are made . For by making this Supposition ; the Constitution of Bodies is the better conceived ; and the Connexion between the several Parts , will the more plainly appear . For these Particles having obtain'd various Figures by means of Motion , it was not possible for them to be so united together , as that no Intervals should be left between them , to be fill'd by some other Subtil Matter . These Intervals we call Pores , which do arise from the various Conjunction of little Bodies or Particles . II. How Pores come to be . First , When the parts that stick together are Round ; for since these , by reason of their Convex sides ▪ can only touch each other in a point , they must necessarily leave little Intervals between them . In the Second place , when those parts have irregular Figures ; for then by reason of their various Termination , they cannot so intimately close together , but that some little Spaces must be left between them . Thirdly , By the Force of the Subtil Matter , which being excessively Active , by separating joyned Bodies , makes way for it self to penetrate them . Which Irruption of the Subtil Matter is very frequent in Soft and Fluid Bodies ; because , as hath been said , they give easie admittance to other Bodies , and by their Motion do assist their Impulse . Hence it is that the Fluid Matter , which consists of Round particles , is accounted the most Porous : For tho' little Globular Bodies are very proper to compose a Liquid Body ; yet because of their Figure , it is necessary that Triangular Spaces be left between them , not empty , but fill'd with the Matter of the First Element . Thus we see , that the Light of the Sun does come to us , through the Spots with which it is surrounded ; which could never be , but that they abound with Pores , which afford passage to the Matter of the First Element . III. How Pores are come to be in the Spots that are about the Sun. These Pores are easily conceived to have been made at the first beginning of their Generation , viz. when the Matter of those Spots was as yet very Loose and Soft ; and when afterwards it became more Close and Compact , the particles of the First Element , by passing through them continually , kept them from being quite closed ; tho' they were so far narrowed , as to admit only that Subtil Matter . IV. If there were no Pores , there could be no distinction between Bodies . And the same Reasons prove , that there must be Pores in all other Bodies , except those only whose parts do so intimately touch one another , that they can be no further comprest or condensed ; for such as these are the hardest Bodies of all , as being devoid of all Pores whatsoever . But should we suppose this to be the condition of all Consistent Bodies , we should by this means take away all distinction that is between them ; as for Example , between Wood and Stone , between Crystal and Earth ; since between them there would be no distinction , as to their Inward Figure and Situation , and consequently all Bodies , as to their Inward parts , would be alike ; which is the same as to say , that all Bodies are Close , and that none of them are dilated by admittance of the Subtil Element . V. There are many Bodies that cannot be without Pores . But since the Difference of Bodies is apparent to the very Eye , some of them being Living Bodies , other Lifeless ; some Transparent , others Dark ; it is necessary that there be a difference between them with respect to their Inward parts . For if we deprive Hard Bodies of their Pores , we shall never be able to understand how Plants are nourished and grow , since this cannot be without the receiving of Juices , whereby their Parts become dilated and extended . For according to the diverse disposition of the Pores of Trees , their Growth and Nourishment is also different . Thus we see that an Oak and a Medlar Tree , with other such like Plants , because of the Hardness of their Sides , and the narrowness of their Pores , do grow more slowly ; whereas a Vine , a Gourd , and other such like , whose Pores are wider , grow very swiftly and spread their Branches far and near . VI. Without Pores we cannot understand the Growts of Trees . That this is so , is evident in the Winter ; for then all Budding and Growth is hindred , because the Pores at that time , by the Suns departure , being closed by Cold , cannot admit their Food , as they were wont . VII . The Pores of Bodies prov'd by an Experiment . The Existence of Pores is prov'd likewise by that Experiment which was made in presence of the Great Duke of Florence , which was as follows : A Glass Vial , with a long and narrow Neck , was put into warm Water , almost up to the middle of the Neck ; after a small time the Liquor contain'd in the Vial seem'd to fall down a little ; but to rise again to its former height , when the said Vial was put into cold Water . Because the Pores of the Glass being enlarged by Heat , procure it a greater Capacity ; whereas , when the Pores are straitned by the cold Water , the capacity of the Glass grows less , which is the cause of the Rising of the Liquor . VIII . How a bent Bow , as so●● as unbent , returns to its former straitness again . Moreover , we daily experience , that a Bow when unbent returns to its former figure , which Return cannot be attributed to any Cause , save only to the bending of the Pores . For the Subtil Matter which was us'd to pass through those Pores , now by reason of the bent of it , is not able to pass through them with the same ease , and therefore endeavours to reduce them to their former figure . Which may be done several ways . For if , First , we suppose that the Pores of the unbent Bow , in their Natural posture , are of the same wideness at their entrance and ending ; but that when bent they become more narrow at the end , it cannot be doubted but that the Subtil Matter , which enters the wider parts of them , will put a force upon the more narrow parts , and thereby cause the Bow to fly back . Secondly , If we conceive the said Pores of the Bow , before Inflexion , to have been Round ; and that by the bending they became Elliptical , the Subtil Matter that is to run through them being Round also , it is evident that whilst they endeavour to enter those Elliptical Cavities , they strive to reduce them to their Spherical Figure ; which is the Cause why the Bow flies back to its first state . IX . The Likeness and Unlikeness of Bodies proceeds from their Pores . But to return from this particular Example , to the consideration of Pores in general ; we say , that all Bodies that have like Pores , are like to one another , if withal they agree in the same Quantity , Motion , Rest , Figure and Situation of Parts . For diverse Matter requires diverse Pores , seeing it is necessary for it to be differently constituted as to its little Particles , to the end it may be able to exert its Force , and to thrust it self into other Bodies . But yet we are not to imagin , that all the Pores of Consistent Bodies , have their Pores hollowed after the same manner , or disposed in the same situation and figure : For they who in Winter time put on a Wastcoat over their Shifts , find themselves less subject to Cold , than when they wore nothing besides their Shirts ; which would not be so , if the Pores of the Shirt and Wastcoat did answer to one another in their figure and situation . X How the Ports of Bodies come to be destroyed . As Pores do arise by the Generation of Bodies , so by their Dissolution they are destroy'd . Thus the Pores are destroy'd in Wood that is worm-eaten , and in Clothes that are Moth-eaten . Or if the Pores be wider , as in woollen Cloth , and other such like , they may happen to be divided in the midst , and afterwards be made whole again by being joyn'd to other Pores of a like figure . Another way whereby Pores are destroyed , is that of Obstruction , when the parts of Bodies become so closely united , as to make one Continuous Body ; as when by means of Condensation the Pores are lessened , or quite taken away ; or when some supervening Matter remains in them , and hinders any other Matter from entring them : So when the Pores of the Sails of a Ship are fill'd with VVater , it hinders the VVind from passing through them , notwithstanding that the VVind have a far greater agitation than the VVater . CHAP. XXIV . Concerning Duration , and its Species , Time and Eternity . I. Duration agrees to all existing Beings , and is only notionally distinct from them . FOrasmuch as Natural things exist , and take up certain places , it cannot be doubted , but that they are Sometime , and that they have Duration and Continuance in their Existing . For Duration is the Consequent of Existence ; and whatsoever is not made , and destroyed in the same moment , must be considered as enduring , so that Duration may be defined , An Attribute under which the Existence of Created things is conceived , in as much as they persevere in their Actuality . From whence it is evident , that Duration is not really distinct from the Existence of a thing , there being only a Notional distinction between them . Because as there is no Body so little , but that it doth consist of parts , and may be measured with three Dimensions ; so there is nothing in Nature of so short a Duration , but that we can measure it ; neither can any thing be taken from its Duration , but as much must be taken from its Existence . II. The Definition of time Time therefore is nothing else but the Measure of the successive Duration of Bodies , according to the equal Motion of the greatest Bodies , viz. the Sun , Moon , &c. Aristotle defines Time to be the number of Motion , according to Former and Latter . But this Definition stands in need of another to make it Intelligible , except by the number of Motion according to Former and Latter , he means only thus much , that by Time we number the successive Duration of Bodies , in which there is Former and Latter according to the Motion of the Sun. III. The three Differences of time . There are commonly three Differences of Time reckoned , viz. Past , which hath already been ; Present , that which now is ; and Future , that which shall be . By the Present time , we are not to understand an Indivisible Instant ; for no such can be found either in Time or Motion ▪ the Nature of them both being successive ; but all that part of Time , which the Mind represents to it self as Present : Thus we say , the Present Hour , Day , Month , &c. IV. Time is th● Measure as well of Rest as of Motion . From the foresaid Definition of Time , it is apparent , that Time , being the Measure of the successive Duration of Bodies , must Measure Rest , as well as Motion . For we say as commonly , that a thing hath rested , as that it hath moved so long The same is manifest also from this Example , If a Dog , in half an hours time , run three Miles , and a Tortoise in the same time go only the length of one Pace ; the Measure of the Time will be the same in both these motions , when yet there is much more motion in the Dog , than in the Tortoise . And therefore Time is nothing else , but the Duration of a Creature in whatsoever State it may be . V. Succession i● included 〈◊〉 every Duration . For we find Succession in every Created Being , and we can Measure the same by motion properly so called , or at least by the thoughts of our Mind , which seeing they do not exist all at once , must needs involve Succession . Wherefore , neither can the Duration of an Angel or the Mind of man , be said to be altogether at once , as the Duration of God is , because we clearly understand succession , both in our own thoughts , and those of an Angel ; for Angels do not think all things together and at once . But such a Succession cannot be admitted in the Divine thoughts , God being an Act altogether Simple , Complete , and liable to no Vicissitude . Wherefore also Gods Eternity is his very Nature and Essence , forasmuch as he is most sufficiently of himself . And so Time is the same with the Created things themselves , forasmuch as they receive their finite perfections successively , that is , the one before the other . VI. An ob●●ction take● from a thing that exists only one M●m●●● You 'l say , suppose a Creature should only continue one Moment , that thing would exist in the World , but without any Succession of Existence ; therefore Succession is not involved in the conception of Duration . VII . The answer that ●ll Moments are divisible . I answer , that Duration cannot be understood without Continuation , and therefore no part of Duration can be assigned so small , but that there must be continuance in it : Since no Moment can be conceived , which is not divisible into other Moments . Wherefore those are mistaken , that make the present Time , to be an Indivisible ; for since every Duration is Greater or Less , that is , consists of more or less Parts , no real Particle of it can be assigned , which hath not a quantity of its Duration distinct from another . Wherefore as every Particle of a Body , may be divided into other Parts : So likewise the present Time is compounded of Parts , and is divisible into other Moments . VIII . Time 〈…〉 an Entity of Reason . Whence it follows , that Time is not an Affection of Created things , but a mere Mode of Thinking , or an External Denomination , which we call an Entity of Reason . For as Things , from the the Operations of our Mind , are said to be Known , Understood , Defined , &c. of which Operations they are only the Objects ; so Time , whereby we Measure the Existence of Created things , is no more with regard to them , but an Extrinsecal Denomination , and a Mode of Thinking , made use of for the explaining of Duration . Hence LUCRETIUS saith Book I. Time of it self is nothing , but from Thought Receives its Rise , by labouring Fancy wrought From things consider'd , whilst we think on some As Present , some as Past , or yet to come . No thought can think on Time , that 's still confest , But thinks on things in Motion or at Rest : GASSENDUS from these Verses of LUCRETIUS , concludes EPICURUS to have been of the Opinion of ANTIPHANES , who held , that Time was something that had no real Existence , but only in the thought of Man. which ARISTOTLE also seems to insinuate , whilst he defines Time by Number , which cannot exist without the understanding of the Counter of Numerator . It is not in vain , saith GASSENDUS , that EPICURUS warns us , that we are to speak otherwise of Time , than of other things , which are in a Subject ; thereby intimating to us , that time is in a Subject only by the help of our thoughts ; forasmuch as the Mind of Man considers a thing not to cease to be , at the same moment it begins to be , but to abide and continue , and to keep its Existence for a longer or shorter space of time . So that that it is evident that EPICURUS would not have any thing further to be inquired of Time ; than what the Mind at first sight conceives of it , that is , a stay or continuance , whether it be longer or shorter . And if any Man should demand what Time is , we may answer him with DEMOCRITUS , that Time is just such a thing , as is the space of Day and Night . IX . What Duration is called Time. Wherefore to the end we may Measure the Duration of all things , we compare it with the Duration of some particular Beings , which have a certain and most equal Motion , by which Days and Years are made , and this Duration we call Time ▪ Wherefore they who suppose the Sun to be whirld about the Earth , or the Earth to turn round about its own Axis , attribute time to the motion of either of them , as being its proper Measure , according to Former and Latter : But as for the Duration of other things , they will have them to be measured by time , only by means of an external Application of our Mind . Thus when we say , that Nestor lived 300 years , we mean that he lived so long , as that Motion lasted , wherein the Sun performed 300 of its yearly Courses , or the Earth 1095 Circuits about its own Axis . X. How time is said to flow , or to be successive If any one urge , that that there are many things agreeing to time , which cannot be attributed to an Entity of Reason or an Extrinsecal Denomination , as when we say , that Time flies , Time teacheth Men many things , that Time comes , follows , &c. which cannot be spoke of a thing that doth not exist at all , but only depends on our thoughts . XI . Answer . I answer , that these are Metaphorical Speeches , and which agree only to the things that pass away , are taught , come , follow , &c. For Time is said to run , or pass away , when things by an outward Application of our Mind , with respect to the motion of the greatest Bodies , which can be observed by all Men , are understood to exist for some time . Time is said to teach all things , when those things which heretofore where hidden from Men come to be known ; and upon the same account Time is said to come , to succeed , to vanish , &c. XII . Whether upon the ceasing of the Motion of the great Heavenly Bodies time ceaseth also . If any Man should infer from hence , that therefore upon the ceasing of this universal and equal motion , of the Sun or Earth ; Time must cease also , and be no more , because then our Mind will be no longer able to compare the Duration of Created things , with the Duration of certain equal and stable motions . XIII . Answer . To this I answer , by denying the Consequence , because Former and Latter is not only in motion , but also in our Thinking Mind , since that in it we find a true succession of Thoughts ; for we cannot at once and altogether Think of all things , we can think of . And therefore , tho' all motion should be taken out of the World , yet would not that put an end to succession , but Created things existing in our Thoughts , would be still commensurate to Former and Latter . XIV . What Eternity it . Having thus explained the Nature of Time , it remains that we speak a few words of the other species of Duration , viz. Eternity , which they call the Duration of a thing , without either Beginning or End , and which belongs to God alone . And which BOETHIUS defines to be . The All at once , and perfect Possession of an Interminable Life . The word Life , is here taken for the existence of a thing , endued with all the Perfections it is capable of . The words all at once intimate , that Perfection does not agree to the Eternal Being successively , but that he possesseth them all at the same time . Whence we may in fer , that no Creatures , whether Material or Incorporeal , could ever be Eternal , because it implies a contradiction for them to possess at once all the Perfections , Qualities and Modes which they are capable of . XV. All Beings are either Permanent or Successive . From all that hath been said it appears , that there are some things whose Essential Parts , can exist together , or all at once ; and that there are others to whom this cannot agree . The better to distinguish these , I call those things successive , whose Essential Parts are in a continual Flowing . Thus Time is a successive Being , because Present , Past and to come , which are the Essential parts of i● , are never all at once . And I call those Permanent , all whose Essential parts are together . Thus a Triangle is a Permanent Being , because the Content and the three Sides , of which it is composed , do exist all at once , or at the same time . CHAP. XXV . The Ends of GOD are not to be enquired after in Natural Philosophy . I. It is a p●●ce of 〈◊〉 to enquire concerning the 〈…〉 God. THO we own GOD to be the Efficient Cause of all things , and that all Creatures depend on him alone , yet we have no mind to enquire , for what end they were produced by God , and what Reasons he propounded to himself , in calling them out of the Abyss of Nothing . Who knows not that the Secrets of God are unsearchable , and past finding out ? And as it is not the part of an Earthen Vessel , to dispute the Point with the Potter , why he hath made him such ; so neither does it become Mortal Man , to question with his Maker , why he hath done so and so . And indeed this Reason alone taken from the Divine Majesty , and our Littleness and Meanness , may be sufficient to restrain us , from enquiring into the Ends God hath proposed to himself in the making of Natural things . II. Our Human Infirmity ought to restrain us from enquiring into the Divine Secrets . For tho' in the Contemplation of Natural things , it be permitted to us to enquire , from what Principle they proceed , what their Matter is , and with what Forms they are perfected ; yet is it a piece of Rashness and Arrogance in us , to dive into Gods Counsels : Whereas we ought rather to consider that we are weak Creatures , of limited Perfections , and not fully Masters of our own Actions ; whereas God on the other hand is Immense , Infinite , All-wise and Omnipotent , so as to be able to produce innumerable things , the Reason whereof could never enter into our Thoughts . III. The things which are done in the Earth are not known . For if we are not able to give an account , of what use those things are to us , which in such great abundance are hid in our Earth , and cannot assert but that they have been destinated by their Author , to ends altogether unknown to us : How then shall we dare to pry into the Arcana of our most Good , most Powerful and most Glorious Creator ? As if we were familiarly acquainted with his Mind , and as if we had been his Privy Counsellours . Is it not much better for us to adore his Goodness , without determining of those things , which it is not allowed Man to know , nor permitted to search into . IV. The Divine ends in Moral things may be searched after , but not in Natural things . I own that in Moral things , where Conjectures are of more Authority , it may be conducive to Piety , to enquire into , and determine the end God hath proposed to himself in Creating the World. Therefore Preachers to excite the Divine Love in us , set before our Eyes the several uses and advantages , which the Creatures afford us , telling us that they were made for our Sakes . But in Natural Philosophy , where nothing is to be admitted , which is not built upon the most unshaken Reasons and Arguments , it seems to be a foolish thing to guess at any end , that God should have proposed to himself , in the Creation of the World. V. Objection , that all things were made for Mans sake . But some will tell us , that according to the Scripture , all things were made for our Sake , because they are of some use to us . And therefore say , that the Sun was Created to give us Light ; that the Soul of Man was made by God , to Contemplate him ; yea , that the whole Universe was Created for Mans Sake , seeing that all Creatures , are some way or other serviceable to him : And that Consequently Gods ends may be known by us , as well as any other Causes . VI. The First Answer . To this may be answered , First , That true indeed it is , that the six days of the Creation are so described in Genesis , as that Man seems to be the chief end of them : But it may be said , that this History of Genesis , was penn'd for Man's Sake , and that therefore the Holy Spirit was pleased chiefly to set down those particulars which have reference to Man. VII . The Second Answer . I answer Secondly , That it doth not appear at all , that all things were Created for the Sake of Men. For how do we know , what and how many things , God hath made besides this Earth which we Inhabit , in the Stars and elsewhere ? How do we know , but that there may be other Creatures , specifically distinct from any of those which we see , other Animals , other Men , or at least Creatures Analogous to Men , in some other places ? These things are unknown to us poor Mortals , because the Divine ends and Counsels are hid from us . When it is said therefore , that all things are Created for Man's sake , we are not so to understand this , as if they had no other use , save what they render to Mankind ; but only this , that Man can and must exercise his Wit and Understanding about them . Now it is a quite different thing to say , that Man was Created , that he might Celebrate and praise God for the excellence of his Works ; and to assert that all these things were Created for Mans sake alone . For in the former , Mans Duty is intimated , but in the latter , the end and aim of the Creat●r in making the World is determined . VII . It seems a great p●●ce of 〈◊〉 so to 〈…〉 that 〈…〉 Man 's 〈◊〉 Besides , it is an absurd thing to imagin , the Sun to have been Created for no other end , save only to enlighten us : And that the Stars and Plantes were ranged in their several Vortices , only to assist and pleasure us ; since we are the very least part of the Earth , and the very Earth it self ( in respect of the Heavens ) is no more than a small Grain of Sand , compared with a Mountain . Wherefore let us take heed of entertaining such presumptuous Thoughts of our selves , as if all things were made for our use , profit and advantage only ; when there may be an infinite number of Creatures , that by many degrees exceed u● , whose Nature and Excellence is altogether hid from us . Have not we much more reason to have such thoughts as these , than to entertain those other presumptions , when we consider the immense Power and Widom of our Infinite Creator ? IX . The Glory of God was not the Reason why the World was created . Some , pretending Zeal for the Honour of God , tell us , that his own Glory was the end and aim he proposed to himself , in the Creation of this Universe ; as if Gods aim in the Production of this World , had been only to display his Magnificence , and to exalt his own Glory . But who can believe this ? Shall we say , that God could not have provided for his own Glory , by other things different from these ? Would his Honour have been ever the less , if he had Created another World ▪ You must then own , that his Glory was not the sole motive he proposed to himself in creating of the World. Moreover , how can it be said , that Glory was the Creators end , seeing it is a thing extraneous to him , and which doth not at all belong to his Essence ? For God can never be said to be determin'd in his Actions , by any thing that is without him , neither can any thing that is without him , be a motive to him . The Fifth Part OF THE INSTITUTION OF PHILOSOPHY . VIZ. SPECIAL Natural Philosophy , CONCERNING THE WORLD AND HEAVEN . CHAP. I. Of the Vnity and Perfection of the World. I. What is meant by Special Physicks . HAving examin'd those things that belong to GENERAL PHYSICKS , and thereby consider'd a Body or Matter in General ; that is , its Nature , Principles , General Affections and Differences ; we proceed now to SPECIAL PHYSICKS , or that Part of Natural Philosophy which takes a view of Matter , as distinguish'd into Species , and lays open their several Species , Properties , Distinctions , and Mutations , in a more particular manner . II. The Species of Bodies may be considered two ways . Now the Species of Bodies may be consider'd after a twofold manner , viz. either Jointly or Separately ; or , as others express it , Collectively or Distributively . The Species of Bodies are Collectively consider'd , when they are view'd all together , as the Parts that constitute one Whole or Entire Being . Distributively , when the chiefest Species of Bodies that compose the World , are in a convenient Order particularly examined . III. The Definition of the World. The whole which contains all the Species of Bodies , is called the World ; and is the Comprehension of all Natural Bodies Created of GOD , and for GOD , by the most free Motion of his Will most beautifully Adorned , and most wisely Governed , and powerfully Preserved . And is thus defin'd by ARISTOTLE ; The Structure of Heaven and Earth , and of the several Natures comprehended in them . Lib. de Mund. Cap. 2. IV. The World contains all things . For the WORLD comprehends all and every thing that can fall under our Thought . Whatsoever Rhetorick commends , or Philosophy admires , is a part of it . And therefore the Ancients have told us , That the World consists not only of Animals and Men , but of Gods also ; and that accordingly the World is a Kingdom or Commonwealth , compos'd of the Gods , Men , and Animals : Which Saying of theirs is true enough , save only in that it imparts the Name of God to many , which is due to none but One alone . Book . 1. Part. 5. Chap. 1. The Reverend Knightley Chetwood of Chetwood in Buckingham Shire ▪ Lineally descended from the most antient Barons of Wahull ▪ alias Woodhull ▪ in Bedford Shire . Arch-Deacon of York &c. a. This Plate is humb by Dedicated by Richard Blome . VI. Plurality of Worlds implies a Contradiction . However , if any one should question , whether there may not be another VVorld distinct from this . My Answer in short is , that they who hold a Plurality of VVorlds not to imply a Contradiction , say , that supposing there were a VVorld distinct from this we live in , it might be placed in that Space which we imagine to be beyond the utmost Heavenly Sphere ; but it is impossible that any Bodies should be there , seeing it is supposed to be Nothing , or something Imaginary only , and which consequently can have neither Parts nor Effects , and therefore cannot place any thing . For Place being nothing else , according to Aristotle , but the Surface of the ambient Body , how shall we find a place there , where no Bodies , nor Surfaces are to be found ? VII . Many Worlds cannot be united together . Moreover , if beyond the highest Heaven , there should be another VVorld like to this , either they would touch one another , or be separate . If we suppose them separate , there must be some Medium that may wholly surround them both , and so neither of these VVorlds would be utmost , as having still something beyond them ; and if they touched one another , being Round Bodies , there must be a Vacuum left between those parts , that did not touch ; but we have proved a Vacuum to be an Impossibility in Nature , in our General Physiology . Besides , the Space which we imagine to be betwixt these two VVorlds , is not a meer Nothing , but a Body , since nothing but a Body can make a Distance betwixt two Bodies : For we cannot conceive one thing to be distant from another , without some real Medium that separates them , which seeing it can be nothing else but a Body , it will joyn both VVorlds together , and so instead of separating these two VVorlds , it will unite and make but one of them . VIII . Whatsoever we imagin to be Extended , is a Body . But to put an end to this Dispute , we say that this VVorld hath no Bounds of its Magnitude . For seeing every Space is something extended , and that no Extension can be without a Body , we conclude that nothing can be conceived by us beyond the Heavens , but what must be Real ; and consequently that there can be no other VVorld besides this . And yet it cannot be inferr'd hence , that the VVorld is Infinite , but only that it is Indefinitely Extended , because we cannot conceive so great an Extension in the VVorld , but we may still imagine Greater , forasmuch as all imaginable Spaces are fill'd with Matter . IX . The World is not Infinite , but Indefinitely extended . You 'l say , If the VVorld be Indefinite , thas is , if we can imagine no Bounds or Ends of its Extension , it must be Infinite , because Infinite is nothing else , but that which hath no End. X. The first Answer . I answer , First , All grant that there are Indefinite Parts in every Body , so that it is impossible to come to the last of them ; and yet no body ever asserted , that therefore a Body was Infinite . So tho' we admit an Extension in the World , the end whereof we cannot imagine , yet is not the World therefore to be reputed Infinite . For I do not see how that which hath Finite Parts can be accounted Infinite ; nor how any Mass or Bulk , which GOD can take something away from when he pleaseth , can be called Interminate . XI . The second Answer . I answer , Secondly , that there is a great difference betwixt that which is Infinite , and a thing Indefinite ; for we cannot assert any thing to be Infinite , except we have a Reason whereby we can demonstrate it is so : Whereas to assert any thing to be Indefinite , it is sufficient , if we have no Argument which proves it to be Finite . Which cannot be proved of the World ; for it cannot be understood , that the Matter of which the World is made should have any Bounds , seeing that whatsoever we imagine beyond the Heavens , we still conceive it as an extended Space , which hath Length , Breadth and Depth , which constitute a Body . Of which we shall speak more fully in the Third Chapter . XII . The World is Perfect . We cannot doubt of the Perfection of the World , if we consider either the Author of it , who is Infinite , All-wise , All-powerful , &c. or the Harmony of the Parts of the World , the Distinction of Natures , and Difference of Bodies that are in it ; because we meet with nothing in it which is not Compleat and Perfect . XIII . The Imperfection of Parts , takes not away the Perfection of the whole . And tho' the World doth not consist of things that are all best in their kind ; because all particular things that are in the VVorld , if considered in themselves , cannot be said to be Perfect , but only with reference to the whole VVorld , whose parts they are . For all things that concur to the constituting of any thing , must not be of one and the same Order . What would become of a Republick , if all the Members of it were Senators ? What would the Body of Man be , if it were made of nothing but Eyes ? What would Musick be without Discords ? So likewise the Beauty of the VVorld consists in the Diversity of Kinds that are in it ; and things Imperfect , as well as Perfect , contribute to its orderly and most excellent Constitution . XIV . The Harmony of the World consists in it Variety . Wherefore this admirable Structure of the VVorld would want much of its Beauty , without that Vicissitude and Inconstancy which we find in it . Hence it is that all things made by GOD are subject to Corruption , neither is any Body so firm , which in continuance of Time is not changed . Thus it hath been observed of late , that VVorms are generated not only in Stone , but also in Glass ; so that we may well conclude , that there are no Bodies in the VVorld that are altogether exempt from Corruption . XV. It is no Argument against the Perfection of the World , that some hurtful things are found in it . But you 'l say , Why are there so many Excrements of the Earth , Air , &c. in the World ? Why were Worms , Flies , Serpents , &c. Created ? since these frequently are mischievous ; and other Creatures again perish , without having been of any use at all ? I answer , that none of these things are Superfluous in the World , seeing that they are Instances of the Power of GOD , and if Men's Industry be not wanting , may be employ'd to many good uses . The very Poison of Venemous Creatures , by preparation and due exhibition , become great Antidotes ; neither is there any thing so deformed in the World , which doth not add to its lustre and beauty , as Shadows set off a Picture . CHAP. II. The Creation of the World proved by Natural Reason . I. Aristotle supposed the World to be Eternal . THE Authority of ARISTOTLE hath of a long time been so prevalent in the World , that it hath been lookt upon ( and is so still by some ) as a great Error to depart from his Opinions : Which is more particularly evident in the matter beore us ; For he supposed the World to have been from Eternity , and could not conceive how it could be produced , seeing that between Entity and Non-Entity there was an Infinite Distance . Some of his Followers have asserted the same thing , grounding their Opinion on their Masters Foundation , that out of nothing , nothing can be made , and that it was a plain contradiction , to suppose any thing to be made , but from Praeexistent matter . Wherefore to overthrow this Opinion , so derogatory to the Glory of the Creator , I shall prove that Creation is Naturally Demonstrable , and that it may easily be proved , that all things proceeded from God. II. What Creation is . By Creation we understand , that Action whereby God immediately produceth any thing . And that he hath in this manner produced all Substances , I prove thus . III. Everything that exists must have a Cause assigned it . There is nothing in the Universe , whereof we may not enquire whence it Exists ; or what is the cause of its Nature , and the efficient of its Existence . And this may not only be enquired concerning things Created , but likewise of God himself ; who tho' he be Independent , Infinite and Omnipotent , yet it may be said , that his Immensity is the cause or formal Reason , why he needs no cause for his Existence . But forasmuch , as nothing like this is found in all other things , but rather the greatest Limitation and Infirmity , we must conclude , that they never proceeded from themselves , but from an outward Principle , and that they derive their whole Essence and Existence from another . For it is most evident , that nothing ( if I may speak so amongst Philosophers ) preceded their Natures , and that they came to be , by the Good-will of the Creator , which is to be Created , and to proceed without dependence upon any other Cause whatsoever . IV. Since the World cannot preserve it self , it did not make it self . The same may be proved from the Preservation of all things : For it cannot be conceived , how a thing that cannot preserve it self , should proceed from it self ; for if a thing be supposed sufficient to afford it self a Being , we cannot but conclude , that it would bestow upon it self , all those Perfections it hath any Idea of ; and seeing Conservation is one of these , neither would he deny it self this . For it is the sense of Philosophers , that Conservation differs only notionally from Creation ; and that it is the work of the same Agent , to produce an effect at first , and to preserve it by a continual influx . Now it is evident by Experience , that no Created things can preserve themselves , therefore neither can they produce or Creaate themselves . V. The parts of Time do not depend on themselves . This will appear more clearly if we divide Time , by separating the several moments of it from each other : For it is evident , that there is no Union between them , and that each single part of it , hath no dependance at all upon the rest . For it doth not follow , that because I was the last year , therefore I shall be the next year , seeing that I may die , in the very moment that I am writing this . Conclude we therefore that that Being cannot produce it self , which cannot preserve it self ; seeing that Conservation is nothing else , but a kind of continued Production , which is only by our Understanding distinct from Creation . VI. If the World had not been made , it would be God. All this Discourse is very accommodate to our way of conceiving . For if it be true , that that Exists , which we understand to be without its Causes ; then that also will be possible , which is clearly and distinctly known by us to be such : But we clearly and distinctly perceive , that it is possible for the World to have been Created ; therefore we must conclude , that it was actually Created , since nothing is found in the Universe , which is not dependent . For if Independence did belong to the Sun , for Example , or the Earth , the Sun and the Earth would be God , because Independence cannot be without Infinity and Omnipotence . Whence it follows , that either Creation must be admitted , or we must expose our selves to one of these two Absurdities ; either that there is something in the World , that had no Maker ; or that in the subordination of Causes , there may be a procession to Infinity , both which are inconsistent with Reason . It is absurd to admit any thing in Nature , which was neither of it self , nor produced by another . For whatsoever the Mind of Man can conceive , is either of it self , and then it is God , since in the Conception of God all manner of Independence is included : Or is from another ; and of that other we must enquire again , whether it be of another , or of nothing ; if it be said from another , we must further enquire of that other , until at last we come to that one Principle , which hath brought forth all things . VII . Things are not so connexed as to have 〈◊〉 dependent upon the first pri●ple . For we are not to imagin with some Atheists , that the Creatures are joynd together like Links in a Chain , which tho' they be all linked together , yet is there no necessity that the Chain made by them , should be united to another Chain ; because the parts of a Chain are not produced of themselves ; but only keep some order amongst themselves . Now it is not in the least contradictory , that two distinct things should be united together . We know that all things produced , are caused by another , and that therefore it is necessary , that one thing as to its Existence should be before another ; for the Effect is after its Cause , as receiving its Being from it . And thus of necessity we must at last come to one Primary Cause , which produced those effects , or else must proceed to Infinity , which is the greatest absurdity in Philosophy , seeing that nothing is more evident than that a Determinate effect , must come from a Determinate Cause : But how can this be , if we can never come to the First Efficient Cause , but still a further cause may be assigned , from whence the effect proceeds ? Wherefore we must conclude , that there is some Determinate Cause , from which all other things flow and are produced . VIII . The 〈◊〉 the ation . Cri ▪ This Truth was owned by the Antient Philosophers , who clearly perceived that the Mind of Man and Intelligences in their Production , did not depend on any Praeexistent matter , as being altogether different in their Nature from it . IX . It implies a 〈◊〉 that there are more Independent Beings than one . Moreover , who sees not that it implies a contradiction , that there should be more than one Being of and from it self , that is , Infinite , Omnipopotent , Immense , &c. For whatsoever Being is of it self , must include all Perfections ; and consequently , if all the things we see in the World , were their own Makers , there will be so many Infinite Beings , as we conceive that there are Independent things : Which is contrary to the order of things , and to the Light of Nature . Wherefore ARISTOTLE attributes to his Heaven , Immutability , the highest Perfection , and Divinity it self : As is evident to him that reads his Book , de Coelo . cap. 2. & 6. Ethic. cap. 7. X. Many mat●●rs of Faith may ●e manifest ●y natural Reason . Neither doth it thwart what hath been said , that the Creation of the World is one of the Articles of our Faith : For Faith is not contradictory to Reason ; yea , we may search out many things by Reason , which we embrace with a Firm Faith , from the Divine Revelation . XI . 〈◊〉 sorts of Questions . And that we may the better distinguish these Points , from those things which are matter of Faith only , we are to observe that there are three general Heads of Questions : Some are such as we first assent to by Faith only , such are the Mysteries of the Trinity and Incarnation . Other Questions are such , which tho' they belong to Faith , yet may be searched out by Reason , as the Unity of God , the Creation of the World , the Existence of God , and the Immortality of the Soul Man. And the last sort of Questions are such , as do not at all belong to Faith , but Human Reason : Such as are about Gold to be made by the Art of Chymistry , the Squaring of a Circle , and such like . As to the first sort of Questions , tho' they exceed the reach of Mans understanding , yet we are to believe them to be most true , because revealed to us by the Holy Ghost : Such points as these are indeed above Reason , tho' not contrary to it . Concerning the middle sort of these Questions , Philosophers may enquire , and shew that they are so far from being contrary to Reason , that they may be found out , cleared , and confirmed by it . As appears in this Question of the Creation of the World , in the handling whereof , I think , I have made it evident that the World could have no other Original but that of Creation . XII Whether the World could have been sooner Created than it was . Some curious person may enquire , why the World was Created just at such a time , and neither sooner nor later ? I answer in the First place , that before the Creation of the World there was no Time : For seeing Time is the measure of successive Duration , I do not see how possibly it could have any Being , before the Existence of changeable things . And therefore St. Austin Lib. 5. de Genes ad Litt. cap. 5. saith , It is in vain to look for Time before the Creation , as if Time could be before the Creature was . For if there was no motion of any Spiritual or Bodily Creature , by means whereof future things might succeed to things that are Past , by the present , there would be no Time at all ; nor could the Creature be moved before it was . Wherefore Time rather had its Beginning from the Creature , than the Creature from Time , and both of them from God. Therefore to speak exactly , the World did not begin to be in Time , but had its Beginning with Time : And consequently , they speak very improperly , who say , the World might have been sooner or later produced , because these expressions denote Parts of Time : Now it is apparent that Time presupposeth the World and the Creatures , and is a concomitant of them . CHAP. III. The World is not Circumscribed by any Figure or Bounds . I. Some deny insensible parts in Bodies , because they cannot see them . THOSE who derive all Knowledge from their Senses , cannot conceive that there should be any sensible parts of matter , of which Bodies are framed , only for this Reason because they cannot see , or perceive them by any of their Senses . For they think it to be an absurd thing , that any thing should be represented to the Mind , which comes not in by the Senses . II. Some suppose the VVorld to be of a Round Figure . There are some of these , who after that they have asserted , that all the Bodies in the World consist of three Dimensions , and that none of them can be imagined so small , but that they consist of various Sides and Surfaces , do conclude the World to be of a Round or Spherical Figure , so that all the Lines drawn from its Center to the Circumference are equal . The chief ground of this their assertion is , because a Round Figure is the most perfect of all , and most conservative of the Body to which it belongs : And that the Universe , as being the most noble of all Creatures , must needs have the most excellent and useful Figure . And they defend their Opinion by ARISTOTLES Authority , who saith , that nothing is corrupted but by its contrary ; and that seeing the Heavenly Bodies , are Ingenerable , and Incorruptible , it was necessary they should have such a Figure whose motion hath no contrary . III. A Round Figure conduceth nothing to the Incorruptibility of Bodies . But ARISTOTLES Authority must not be more prevalent with us than Reason ; for if a Round Figure were conducive to the everlasting Permanence of things , it would follow , that things of that Figure must be Incorruptible : Yea , it would depend on our Will to make things Incorruptible ; since it is in our Power to make Wood , Wax and such like Bodies of a Round Figure . Nay , if this were true , there would be no Bodies in Nature , but what would be Incorruptible , forasmuch as all of them have some kind of Roundnes , because a Circular Figure lies hid under their Angles ; and therefore a Cubical or Square Body , as to its Spherical Figure would be Incorruptible , whereas its Angles , which cover the said Roundness would at the same time be Corruptible . IV. A Round Figure is not the best of all other . Neither is a Round , more excellent than any other Figure ; for seeing that every Figure , especially those that are Regular , have their Beauty , yea , and that those are lookt upon to be more curious , which have most of variety , why should not a Body of 8 , 12 or 20 Sides , be more excellent as to its Figure , than a Globe ? Or shall we think a Round Figure to be most beautiful because it is most smooth , and most even ? If so , why are not all precious Stones rather formed into a Round Figure ? And why is not Man , who is the most excellent of all other Creatures , of the same Shape ? Wherefore I will conclude with VELLEIUS ; I Wonder at those who will have the World to be a Living Creature , Immortal , Happy and of a Round Figure , because PLATO denies that any Figure ●s more Beautiful than it ; whereas in my Mind , that of a a Cylinder , or a Square , or a Long Figure , or Pyramid do-exceed it . V. No Bounds can be assigned to the World. But if we consider the Nature of a Body or Matter , we shall be convinced , that no Figure can be ascribed to the World : For the essence of a Body consists in Extension , so that whatsoever hath three Dimensions must be a Body . Which being granted , it will follow , that the whole World cannot be terminated by any Figure , because whatsoever we can imagin without the Bounds of that Figure , must be a Body , neither can it otherwise be conceived by us , than as extended in Length Breadth and Depth : For Nature abhors a Vacuum , neither can any space be assigned , which is altogether empty , that is , devoid of any Corporeal Substance . VI. That the World is immense . Wherefore we cannot represent the World so great to us , but that we may still conceive it greater ; for tho' we may conceive that probably there are many Bodies like the Earth , that may be inhabited by diverse Animals , yet is it impossible for us to conceive many Worlds , forasmuch as that wherein we are , takes up more space than we can imagin . VII . An Objection fetched from the Termination of the Parts of the World. Some endeavour to prove the World to be bounded , because it consists of divers Parts , whereof some one begins its Magnitude , and some other terminates it ; and seeing that all the Parts of Matter are bounded , that which results from them must needs be terminated also ; because every thing that is Divisible is Finite . VIII . Answer . This Argument , how much soever they may value themselves upon it , is very inconsiderable , and more thwarts their own sentiment , than ours . For no Philosopher ever denied that Matter was Partible , since Divisibility is its property ; yet no body ever acknowledged , that by dividing Matter , we can ever come to its last Particle . Wherefore they infer wrongly , that the World is Finite , because it hath Parts ; for the inference from hence rather ought to be , that the World is Indefinite , seeing that beyond all the Bounds we can possibly assign it , we still find extended spaces , nor can our Imagination ever reach to any last or utmost limit that might bound it . IX . What we are to understand by the name of Space . This matter will be further cleared , if we consider what Space is , and how it differs from a Body . By the name of Space we understand all that Extension , which we conceive as reaching in Length , Breadth and Depth ; so that Space properly speaking is nothing else , but Internal Place , whereby the Magnitude , Figure and Situation of Bodies , amongst other Bodies are determin'd . And Space thus described doth not indeed differ from a Body , but according to our way of conceiving ; because we conceive the Extension of Space , as something common and Generical ; whereas we consider the Extension of a Body , as something Individual and Singular . As for Example , when a Tower is taken away , we imagin that its extension is also taken away , because we conceive the same as Singular , and belonging only to it , and suppose the Extension of the place , wherein the Tower was contained , to remain the same , tho' another Building be erected in the same place , or 〈◊〉 other like Body be placed there . Because here Extension is considered in common , and is lookt upon to be the same , whether of a Building , the Air , or any other Body , so it be but of the same Bigness and Figure , and in the same Relation , of Distance or Nearness , to those External Bodies which determin that place . X. Space and Body are the same . We see then , that it is the same Extension that constitutes the Nature of a Body and Space , and that there is no other difference between these two , but that which there is between a Genus or Species and an Individual , that is , between the Nature of a Man considered in General , and that of Anthony or John. And as we say , that a Whole includes all its Parts , and all the Parts united together , comprehend the Whole : So tho' Space be said to include a Body , and a Body to be placed in a Space , yet cannot a Space and Body on that account be said to be really distinguisht , seeing that the World , which comprehends all things , is not conceived really distinct , from all the Parts contained in it . XI . That there are no Bounds beyond the World. Forasmuch therefore as we can imagin no end to Extension or Matter , but that beyond it we still conceive further Spaces , we must needs assert this World to be Indefinitely extended , and that it cannot be bounded by any Figure whatsoever . And tho' we will not arrogate so much , as to suppose our Mind to be the measure of Truth ; yet we say , that it must be the measure of whatsoever we do affirm or deny . For it is absurd for us to pass our Sentence concerning any thing , whose Nature we know we cannot reach . Wherefore we make no difficulty , to assert the World to be Indefinitely extended , seeing we can conceive no Bounds in it . CHAP. IV. The matter of Heavenly and Earthly Bodies , it one and same . I. Aristotles Opinion concerning the matter of Heavenly and sublunary things . IT hath been a frequent Controversy amongst Philosophers , whether the Matter of Heaven were the same with that of Sublunary things . ARISTOTLE supposing the Heavenly Bodies to be Incorruptible , will have their matter to be distinct from ours ; so that , according to him , there are two parts in the World , the one Elementary , the other Coelestial . He makes the matter of Heaven to be Ingenerable and Impassible ; whereas the Elementary is subject to changes , capable of all forms , and craving those it wants . For if we may believe him , the Heavens never suffered any change , and continue still in the same state wherein they were Created . Because Generation and corruption are only found amongst contraries ; and seeing nothing is contrary to the Heavenly Body , because its motion is such , as to be contrary to none ; for one motion , according to him , can only be opposite to another motion ; and since motion upwards , is contrary to that which is downwards , it is necessary that Circular motion , which is proper to the Heavens , must have no contrary , and therefore that Body which is so moved must be Incorruptible . II. Aristotles Argument returnd upon him , and confuted . But what if we should grant the Heavenly Bodies to be Ingenerable and Incorruptible , yet would it not follow from thence that they are not subject to any changes , which we may prove by ARISTOTLES own Argument . Those things may be generated and corrupted , that have their Contraries ; but that which is Ingenerable and Incorruptible , is contrary to that which is Generable and Corruptible ; therefore the Coelestial Orbs are Corruptible and Generable . But to leave these Reasonings , let us see what may be alledged against ARISTOTLES Opinion . For asmuch as the Modern Astronomers , have more exactly viewd the Stars than the Antients , I question not , but that were ARISTOTLE now alive , and made use of our Telescopes , he would be of their Opinion . For they observe that the Sun is frequently obscured by Spots which obscure its face , and that these at some certain times are so condensed , that the Light of the Sun for some Months together , appears much weaker . Now that these are generated , cannot be denied , since almost every day they change their Form ; they are sometimes of a Black colour , at other times they seem to have a Dusky appearance of Light ; yea sometimes they are of that loose texture , that they exceed the Sun in Brightness . All which could not be without Generation and Alteration . III. The Planets subject to changes . The changes which happen to the Planets confirm the same thing ; for what is more instable than these wandring Stars ? The Moon almost every day gives a various Representation of herself . Saturn seldom appears with the same face . How frequently is Jupiter clouded with Spots , which interrupt its Light from coming to us ? Venus is continually changing , and if we may give credit to the information of the Telescope , we must assert her to have several Faces ; since she does not only change her aspect , but also her Bulk and Figure , as Astronomers tell us it happend , in the time of King Ogyges . Moreover , how many Comets and New-Stars , do there appear in the Heavens , as the Star in Cassiopaea , and others that appeared in the Heavens in 1572 and 1604 , above the height of the Planets . All which PHAENOMENA may be sufficient to make the followers of ARISTOTLE to reject this foolish Opinion of their Master , and to acknowledge the Corruptibility of the Heavens . IV. The Mathematicians have descried many new Stars . Neither are we to be moved by what ARISTOTLE tells us , that he never perceived any such thing in the Heavens , where he saith ; This is likewise abundantly confirmed by Sense ; seeing that according to the Records of all past time , never any such change hath happened in the whole utmost Heaven , nor in any of its proper parts . Well , let us be so favourable to ARISTOTLE , as to take this to be true ; but can it be inferred from hence , that no further observations could be made for time to come ? For we read that HIPPARCHUS , 200 years after ARISTOTLE , found out a new Star , by the motion whereof he began to question , whether this might not happen more frequently , and whether the fixt Stars also might not have a motion of their own . We know likewise that TYCHOBRAHE descried the foresaid Star in Cassiopaea in the Region of the fixed Stars , above Saturn . V. Wherein the Essence of Matter doth precisely consist . But we may put the Point beyond all Controversy , considering wherein the Essence of a Body doth consist , and by removing from it whatsoever is Extraneous to it . Thus in the first place it appears , that sensible Qualities are no constituents o● it , since it can be without them , and loseth nothing ▪ when they perish . Air , which is soft to the Touch , doth not change its Nature , when by being shut up in a Bladder , it appears hard . A Bean is of considerable Hardness , as long as it abides whole , but when reduced to Flower , it becomes soft . But the Air and the Bean continues Bodies for all that . Neither do Figure , or Motion conduce any thing to the constitution of Matter , since the World which is of no Figure at all , or at least cannot be conceived by the Mind of Man , under any Bounds , still continues to have the Nature of a Body . And the Heavens , which are considered as immoveable , do not therefore cease to be material . And the same may be said of Heat and Cold , and other like Qualities , which may be absent from a Body , its Nature continuing whole and entire . VI. The matter of Heaven and Earth consists in Extension . We conclude therefore , that nothing but Extension constitutes the Essence of Matter , since that alone cannot be separated from it , and is Reciprocated with it . For if you take away Extension , the Body is gone , as when you take away the Body , the Extension is no more . VII . The matter of the Heaven and of Sublunary things is the same . Forasmuch therefore as the Matter of the Heavens in Length , is extended in Length Breadth and Depth , and that no thing but this Extension is included in the Conception of it , we conclude that the matter of Heaven and Earth is one and the same , and consequently that the Matter of the Heavens is as well subject to Corruption and Changes as that of the Earth is . Objection that the matter of Heaven and Earth is not under the same Forms You 'l say , that the Heavenly Matter is not under the same Forms as Sublunary things are , because it was never known that Heaven was generated of the Air , or that a Star was changed into an Earthly Body . IX . There are no Forms but may inform Coelestial Bodies , as well as Terrestrial . If by the name of Forms , in the Objection , be understood those Substantial Principles , which have a different Being from the Matter , and together with it constitute a Natural Compound , I say , that such Forms as these are meer Fictions , and useless to the explaining of Natural Effects . For such Forms must be either Material or Immaterial . If Immaterial , of what use can they be to Matter ? How can they perfect it , and communicate to it their Essence , since Matter ( according to them ) is meer Potentiality , which derives all its Existence from these Substantial Forms . For how can that which hath no Parts , constitute the Essence of a Material thing ? But if they suppose these Forms to be Material , then must they of necessity be constituted by Extension , and must be subject to the self same Modes of Variation , which all other Bodies are . For it cannot be conceiv'd that a thing should be extended , without being liable to the change of Figure , Motion , Magnitude , Rest and Situation : And forasmuch as Generation is nothing else but a congruous Adaptation of the Insensible or Sensible Parts , according to the foresaid Modifications , we must conclude , that all Matter is subject to Changes , and consequently , the Elementary Matter doth not differ from the Heavenly . CHAP. V. What the Form of the World is : Whether it be the Soul , that is , the Spirit of Nature , or the most excellent Disposition of its Parts . The Opinion of Pythagoras and Plato , concerning the Soul of the World. THere is nothing that hath been more controverted amongst the Ancients than this Question , Whether the World be endued with a Soul , and vivified by an Internal Spirit , diffus'd throughout all its Parts . Pythagoras and Plato have compared the Universe to Man , and maintain'd it to be furnish'd not only with Life and Sense , but also with Understanding . For they could not conceive , how that which was devoid of Sense , should produce Sensible things . And therefore as there is in us a Power whereby we live , are sensible , and move , they thought that so likewise in the World there must be a Principle , from whence all its Operations flow ; which the Poet describes thus , The whole , an Inward Spirit doth maintain , And a great Soul infus'd through ev'ry Vein Th' unweildy Mass doth move . II. What the Soul of the World is , according to Plato . Tho' Plato suppos'd the Soul of the World to be like that which is in Animals ; yet he holds it not to be a simple Substance , but compounded of two Parts ; the one purely Intellectual , the other more Impure , tho' Pure , if compared with the Grossness of Bodies ; and this he makes a kind of Vehicle of the Immaterial part . So that he makes a distinction between the Mind and the Soul ; the Mind being a Substance void of all Matter , which is the Higher part of the Soul of the World ; and the Soul being nothing else but the most subtil Aether , by means whereof the Mind is brought and united to the Body . III. In what sense this Opinion of Plato may be admitted . Tho' this Opinion of Plato at first sight appears strange and absurd ; yet in a sound Sense it may be asserted . For if by the Soul of the World he meant nothing else but GOD himself , who holds together the dispersed Parts of the World , animating , governing and cherishing them , it contains nothing contrary to Faith or Reason : Provided always , that GOD be understood not to be the Informing Soul of the World , that is , a Constitutive part of it ; but an Assistant form only , that is , the Ruler and Governour of Nature . For GOD is the M●d●rat●ur of all Things , and is present to all Things , whether Intellectual or Bodily , operating in them , and by them , according to that of the Acts 17. 28. In him we live , move , and have our Being . IV. A●●●rditi●s consequent to Plato's Opinion . But if Plato's meaning was , That this Universe was endued with a true Soul , and accordingly was a Real Animal , from whence all other Animals are generated , nothing seems more absurd , than to suppose an Animal compounded of an infinite sort of other Animals , which feeds upon it self , and yet is destitute of Sight , Hearing , and the other Senses . What , are the Stars nourished with terrene Exhalations ? Or is the Earth supported by Emanations from the Body of the Moon ? Who will believe such stuff as this ? If the Earth be sensible , what shall we say of those hard Hearted Husbandmen , which do cut and wound it with their Plough-shares ? Besides , if we grant the Earth to be Animate , must not Stones , Iron and VVater be so likewise ; yea , all other things of the VVorld ? But you 'l say , Living Creatures are generated out of the VVorld . What then ? Must I thence conclude that the VVorld is an Animal ? Why may not I as well conclude the VVorld to be all Stony , because Stones are generated out of it ? Or of Iron , because its Bowels produce Iron ? Yea , why may I not with equal ground conclude the VVorld to be a Fidler , or a Mathematician , because such are born in it ? For tho' whatsoever hath its Original in the VVorld , doth derive the same from something that is in the VVorld ; yet not therefore from the Soul of the VVorld , that is diffused throughout it , seeing that the VVorld contains all manner of things , whether Animate or Inanimate . V. Supposing one common Soul of the World , all Men would feel the same thing . But to urge this with more Philosophical Arguments , I say , that upon this Supposition of a Soul being diffus'd throughout the whole World , it will follow that there can be no Passion of Joy or Sorrow in the World , but what all Men must be sensible of , and that no Body can wound or strike another , without feeling the same himself . For if one Sensitive and Rational Soul governs and animates the World , there must accordingly be but one Animadversion , that is , one part of it must perceive whatsoever the other parts do . But we experience the contrary to all this , and therefore must conclude , that there is no such common Soul in the World. VI. And would remember things they never had perceived . For otherwise we should not only apprehend things offer'd to our Mind , but we should also remember those things , which were never committed to our Memory : For seeing that this Universal Soul contains all things , and is diffus'd through all , nothing of all the things that are acted any where , could be hid from it ; and therefore since by it we perceive Objects , and remember them , it must necessarily follow that the Mind must behold those things as present , which it never enquir'd after ; that is , it must remember those things , which it never perceived . VII . Yea , and would remember those things as done in one Part of the World , which were done in another . Moreover , if we suppose the World to be whirl'd about its Axis . in 24 Hours time , it will follow , that whatsoever I set about when the Earth is in the Beginning of Aries , I shall remember to have done the same when the Earth is in the Beginning of Libra ; tho' that Portion of the Soul of the World , which informs my Body at that time , be then as far from me , as the Earth is from the Sun. Which Arguments sufficiently prove , that there cannot be a Soul common to all Men. VIII . Henry More 's Opinion of the Spirit of Nature . Doctor More , tho' he doth not defend Plato 's Opinion concerning the Soul of the World , and thinks it absurd , that a Substance endued with Sense and Reason should be mingled with all the Parts of the World ; yet he admits of a Spirit of Nature , which penetrates all the Matter whereof the World consists , and exerts its Power in it ; which Spirit he describes to be ( in his Third Book of the Immortality of the Soul ) an Incorporeal Substance , but destitute of Sense and Animadversion , penetrating the whole Matter of the Universe , and exercising a Plastick virtue in the same , according to the various disposition of the Parts in which it operates , directing the Parts of Matter , and their Motions , and discovering those Phaenomena in the World , which cannot be resolv'd into meer Mechanical Causes ▪ IX . Exp●r●ments i● prove th● Spirit of Nature . The Arguments that persuaded the Doctor to admit this Spirit of the World , were the Trembling of an Unison String ; Sympathetick Cures ; the Sympathy there is between Heavenly and Earthly Bodies ; Monstrous Birds ; the Magnetick Attraction of Iron ; and lastly , the Sphaerical Figure of the Sun. For he could not apprehend how the Unison Strings of different Instruments do all of them shake , if One only be touched , without the assistance of this Spirit of the World. How by the Weapon-Sal●e a VVound can be Cured at a great distance . How the Heavenly Bodies , which are assumed by Magicians and Witches , do communicate their Affections to Earthly things ; and how it comes to pass , that the same things that hurt those , do mischief to these also . How Monstrous Birds come to be generated in a Human Womb. How it comes to pass that Iron is attracted by the Loadstone , and of it self , without any impelling Cause is carried towards it . How the Sun attain'd its Round Figure , except this Spirit of Nature be admitted , permeating all the Matter of the World , into which all these Phaenomena may be resolved . X. Why an Un●●●n S r●ng tre●bles at the 〈◊〉 o● an●t●er on a d●●ferent I●str●ment . But I see no necessity of having recourse to a Spirit of the World for the explaining these Phaenomena , since it may better be done by Mechanical Principles . For , as to the First , the Trembling of an Unison String , upon the striking of another , whilst all the other Strings remain without any Motion ; this is caused by the vibration of the String struck , which moving the Air , the Air reacheth the String that 's wound up to the same pitch , and makes it tremble ; the Trembling Motion being easily communicated to a Body disposed for such a Trembling ; and therfore no wonder if it give forth the very same Sound . Whereas if the Trembling Air rusheth against a String that is differently wound up , by giving several hits against it , it hinders it from reverberating ; so that it is impossible for it to sound as the other doth . Yet we must not imagine , that only those Strings which are tun'd alike do shake , since they do all , or most of them shake ; tho' those only do sound , which are in Unison or Diapason , or some other Concord with the String struck . XI . Whether Wounds are Cured by the Sympathetick Powder . As to the Cure of Wounds by the Sympathetick Ointment , or the Powder of Calcin'd Vitriol , and that at a great distance ; this is a thing which may very well be question'd . For what is there in Vitriol to perform this , save only an Adstringent virtue , whereby it is proper to stop Blood , and to bring it to a Scar ? But by what means shall the out-flowing Particles thereof be guided to the Wound , since they only exert themselves to a very small distance ? Whence the Doctor concludes , they are directed to the Wound by this Spirit of Nature . But forasmuch as this Spirit is diffus'd throughout all the World , and indifferently present to all Wounds , why doth it rather heal that whence the Blood came , than all the rest , since it is destitute of Sense and Animadversion , and is no more present to that Wound , which it is supposed to Cure , than to any other ? Wherefore when a Wound at a great distance happens to be Cur'd this way , the Cure is not to be ascribed to the Powder or Weapon-Salve , which is apply'd to the Instrument that made the wound ; but it seems to happen , because the wound is kept clean and wash'd with Urine ; as is prescrib'd in this case : For Salt of Urine is very detersive and adstrictive , and therefore readily closeth the Mouths of the Veins , consolidates the Parts , and skins them over . XII . There is no sympathy between Heavenly and Earthly Bodies . As to that particular of Mens Souls sometimes quitting their Bodies , and appearing in the shape of a Cat , Dog , &c. and that whatsoever is inflicted on these assumed Bodies , doth redound to the hurt of their true Earthly Bodies ; this I take to be impossible , and therefore think it in vain to trouble my self about searching out the Reason of it . XIII . How Monstrous Birds are ●ramed in the Wombs of Women . As to those Monstrous Birds and Animals , that sometimes proceed from the Wombs of Women , there seems no necessity to put this drudgery upon this Spirit of Nature , when it may be more commodiously explicated by a propension in the Matter apposite to the Forming Power , and the intention of Nature . Thus we find that the Seed of Coleworts degenerates into Turneps ; and why may not we as well suppose that the Parts of an Animal may be perverted , by manifold defects of the motions and humors of the Womb , discomposing and altering the Seed . And indeed , what wonder is it for a Woman to bring forth a Monster , when we see the Body of Man familiarly to breed Lice , which are dreadful Monsters when beheld with a Microsope . Seeing therefore that Lice and Worms are apt to be generated , especially where the Parts of the Body are ill affected ; it will not seem strange that in a depraved state of the Womb Monsters should be generated . But of Monstrous Births , see more in my History of Nature . XIV The Reason of the Leadstone drawing Iron , shall be treated at large in the Tenth Chapter of the Sixth Part. And so likewise the Cause of the Round Figure of the Sun , and Fix'd Stars , will be handled in the Fourteenth Chapter of this Part ; to which I refer the Reader , to avoid Repetitions . XV The 〈◊〉 of 〈◊〉 World 〈…〉 in 〈◊〉 most exc●●lent Con●●●tution of its parts . Forasmuch therefore as the World is not endued with a Soul , or any Spirit of Nature , there being no need of either of them for explaining any Natural Phoenomena , we conclude , that the Form of the World is nothing else , but the fit disposition of all its Parts , and their intimate Union . For such is the constitution of the Parts of the World , that tho' they be different , and at a distance from each other ; yet they have a mutual Relation and Reference , and are joyned together by a virtue that penetrates them all . But what virtue is this that unites them ? I answer , that it is the Subtil or Aethereal Matter , which permeating all Bodies is the cause of this Union and Harmony , as LUCRETIUS seems to hint , Lib. 5. The Fluids are all differently Light , And therefore reach'd the less or greater height . Then Liquid Aether did the farthest rear , And lies on softest Beds of yielding Air. CHAP. VI. That GOD , as he is the Efficient and Conserving Cause of Matter , so likewise of Motion . I. Nothing in the World is annihilated . HAving thus explain'd the Nature of the World's Matter , and enquired of the Soul that acts it , it remains now that we consider , whether the same quantity of Matter always remains in the World , or whether it be increased or diminished . Some are so stupid as to imagin , that when Fire is extinguish'd , it wholly perisheth ; not considering that GOD is the Creatour of all things , and that the Creatures cannot destroy any thing , which his Omnipotence hath produced . For tho' the subtil particles of Fire , may by a Fan , Bellows , or the blast of ones Breath be dissipated ; yet are not they therefore annihilated , but being separated exist in another manner than they did before . For as Division doth not make Matter , so neither can it destroy it : Wherefore , Matter divided loseth nothing of its extension , but only ceaseth to be such a Body , and becomes changed into another It is a great mistake to suppose , that those things which cease to affect our Senses , are altogether destroy'd and annihilated . II. Matter is neither subject to Generation , nor Corruption . Matter , according to the Opinion of all Philosophers , is neither subject to Generation , nor Corruption : Wherefore , we must conclude , that there is always the same quantity of it . For indeed how can any new Matter enter , seeing there is no Vacuum , and that the penetration of Bodies implies a Contradiction ? For if any one part of the Eyes suppose , should be taken away or annihilated ( as they fancy of the Fire , when it goes out ) it is certain a Space must be left in the room of it , which forasmuch as it hath length , breadth and depth , we must say that another Body supplies the place of it . For it becomes the Infinite Power of GOD , to act in the most constant and unchangable manner , by preserving that which he hath produc'd without increase or diminution . III. How New Bodies are brought ●orth in the World. But you 'l say , That we daily see new Parts of Matter appearing , which were never before : Thus in Spring time many Herbs and Flowers shoot forth from the Earth ; and in Autumn , the Trees are l●aden with Fruits , which did not exist before . Wherefore we may conclude , that the Substance of Matter is increased . This Difficulty may be easily solved , by distinguishing between the First and Second Matter . By the First Matter is understood a Body in its general Notion , as it includes three Dimensions . By the Second Matter is meant a Body , which besides Extension , is endued with Figure and other Modifications , by which it comes to resort under one or other of the General Heads of things . Wherefore a Body in this sense is not to be called Simple Matter , but something compounded of an Extended Substance , and one or more Modifications . Thus a Tulip , for Example , besides Extension , implies such a conformity of Leaves , which at different Seasons rise and perish . And this Second Matter admits some kind of Latitude , and may be multiplied or diminished . But the First Matter is Indivisible , seeing that all Bodies agree in Extension ; the Soft and Insensible , as well as the Hard and Sensible . And such Matter as this , is neither subject to Generation or Corruption , and consequently can neither increase or be diminished , being only capable of admitting different Modifications , and of assuming divers Forms . IV. GOD is the Cause of the Motion that is in the World. And the same is the case with Motion , forasmuch as all things proceeding from GOD , depend on him in a peculiar manner , and have nothing of Truth or Goodness , but what they have received of him : And that Independency is the necessary Attribute of a most Perfect Being , as Dependency , as to Being and Conservation is the Attribute of all Creatures . For who can believe that the Motion of the Stars about their several Centers , the Course of Rivers , the daily Ebbing and Flowing of the Sea , and the Earths being poised in the Liquid Air are caused and continued by Chance ? It implies a Contradiction to suppose these Regular Effects to be produc'd by any Power , besides that of a most Perfect Being , who not only created Matter , but also imparted Motion and Rest unto it . And since the Conservation of any thing is a continued Creation , we must conclude , that GOD is the Preserver of that Motion , which at the Beginning he imparted to the VVorld . V. That GOD , as he continues the same Quantity of Matter in the VVorld , so likewise of Motion . So that as GOD preserves the same Quantity of Matter which he created , so likewise of Motion , and that without increase or decrease ; which is a remarkable Proof of GOD's VVisdom and Unchangableness . And as for Matter , as it could not move it self at first ; so it being once put in motion , it never ceaseth from it , but continues in the state wherein it is put . So that if the Motion that is in the VVorld should either be diminished , or cease altogether , this must be from the Divine VVill appointing it so ; but no such VVill of GOD appearing , it is certain the same Quantity of Motion must still continue in the VVorld . VI. In what sense it is to be understood , that the same Quantity of Motion is said to continue in the VVorld . When I say , that the same Quantity of Motion is preserv'd in the Universe ; this is not so to be understood , as if all Bodies that were first put into motion , continue in the same motion ; and that those that were left at Rest , do persevere in the same ; but that the same measure of Motion is preserved in the whole Universe , tho' it may be varied and alter'd in the particular Parts of it , with respect to the diverse Bodies , on which it exerciseth its force . Much in the same manner , as we say , that in a certain Kingdom there is such a determinate quantity of Mony , tho' some Men have more of it , and others l●ss , and tho' it be in a continual Relation from one to another . So likewise we must conceive , that the same quantity of Motion is found in the Universe , tho' the same be variously possest by the particular Parts of it . VII . God makes use of the same Force , in applying Motion to divers Bodies . GOD alone can be the Cause of this so constant Motion in the Universe . For if we consider Motion , we find nothing by which it should be increased or diminished , for having not produc'd it self , neither can it increase or destroy it self ; nor can the thing moved , or matter , conduce any thing this way , because it is meerly Passive , and consists only in Extension . Wherefore , we must conclude GOD to be the Total and Universal Principle of Motion ; who at the first instant of the Creation of Matter , put Motion into it , and maintains the same by the same Action wherewith he preserves the Matter it self ; that is , he makes use of the same moving Force , without increase or decrease , which removes from one Body to another , according as GOD applies the same to divers parts of the World. For it might seem to be an Argument of Inconstancy in GOD , if he did not maintain the same quantity of Motion in the World , as well as of Matter , and this by one and the same Concourse . So that the Force whereby Matter is moved , is nothing but GOD himself , who being most Wise and most Powerful , acts in the most stable manner ; and therefore on his part , this virtue can neither increase or be diminished , but ever continues the same , tho' in particular Subjects it may be various . VIII . An Objection tak●● from Go● ▪ ● free Action . But you 'l say , GOD is a Free Agent , and that Things that are done in the Universe proceed from his Will. For who knows not , that the Number of Men depends on his good Pleasure , who produceth and preserves more or less of them , as he pleaseth ? So that there seems no reason , but that there may be an unequal measure of Motion in the World , seeing that according to the Free Will of the Creatour , it may be increased or diminished . IX . The First Answer . To which I Answer , First , That those Things which depend on the alone good Pleasure of GOD , cannot be known but by Divine Revelation ; wherefore the Consideration thereof does not belong to Natural Philosophy , wherein nothing is to be admitted , but what may be discovered by Reason . X. The Second Answer . In the Second place I Answer , That as GOD acts freely , so likewise he acts constantly , and immutably preserves whatsoever he hath once produced . So that we are not only to consider the Liberty of GOD , but the same in conjunction with his other Attributes of Wisdom , Unchangableness , &c. which all together do constitute his one Eternal and Permanent Nature . And as his Liberty appears in the vast Variety of the Things he hath made , so his Unchangableness is demonstrated by his conserving the same Quantity of Motion and Rest in the Universe . For Conservation being a continual Production , it would seem to argue Changableness in GOD , if either any new Motion should arise , or praeexistent Motion should perish . XI . There can be no Inconstancy in Motion , neither in respect of GOD , nor of the World. We acknowledge indeed , that such is GOD's absolute Power of all Things , that he can destroy , lessen or increase , whatsoever he hath made , according to the pleasure of his Will : But as long as such his Will is not discover'd to us , we cannot assert any thing concerning it . And seeing that with respect to the World , no Reason can be given for the increase or decrease of the Motion that is in it , we must conclude that the same force which at first put the Matter in Motion , doth still continue in it . XII . Whence so many Motions arise in the World. It remains now , that we explain how this Motion , or rather Virtue , that moves the Parts of the Universe , does indivisibly continue the same , when so many New Motions are seen every day : As when Men , and other Animals , that rested in the Night time , are all in motion in the Day ; and when Guns are discharged , it is certain that the great Concussion caused thereby , was not before in the World ; wherefore , it seems there must needs be more Motion in the World at one time , than at another . XIII . A Body moved , dashing against another , doth communicate some part of its motion unto it . But this will be easily answered , if we consider that every Body whilst it pusheth on another , doth lose as much of its own motion , as it transfers to that Body it pusheth forwards . As appears in hard Bodies , which by dashing against any soft matter , transmit all their motion to it , and are reduced to Rest . Hence it is , that a Stone falling down from on high to the ground , doth not rebound , but lies still , because it communicates all its motion to the Earth . And in like manner , when Men or other Animals are moved , we must not suppose that they produce new Motions in the World , when the agitation of their Spirits is transmitted to their Members ; because the more motion the Members receive , the less the Spirits retain . XIV . The Concussion of the Air by Guns , does not prove a greater Quantity of Motion . Neither can we infer , that the Quantity of Motion is increased by the Concussion of the Air , caused by the discharge of Canon : For tho' there may be more of that motion which we call sound , yet is there no more motion simply taken : For tho' the commotion of the Air be at first made more vehement , because of the narrowness of the Space ; yet by degrees afterwards it becomes more remiss , as it spreads into wider Intervals , because the Air , having communicated its motion to the Neighbouring Bodies , doth lose as much agitation as it imparts to them . CHAP. VII . Of the Action of Bodies , and the Communication of Motion . I. There is a manifold Communication of Motion . FOrasmuch as the Matter of the Universe is divided into innumerable Parts , and every one of them have their proper Motions ; it cannot be doubted but that they must frequently run against one another , and by contrary motions be either hindred , retarded , or wholly reduc'd to Rest . Hence , according to the variety of their pushing against each other , the manifold Action of Bodies , and Communication of Motions ariseth : First , When two Bodies by Contrary motions run against each other : Secondly , When the Body moved , runs against a Body that is at Rest : Thirdly , When two Bodies are moved the same way , but with a different degree of Swiftness . For it is impossible that Bodies should push against one another , but that some change of Motion or Rest must follow thereupon . II. Wherein the Communication of Motion doth consist . The Communication therefore of Motion consists in this , that according to the Will of the First Mover , the Body that doth exceed the Body it meets with in the Force of moving forward , doth carry the same along with it , and loseth as much of its Motion , as the other receiveth : So that the same Quantity of Motion always continues in the World. III. In the Communication of Motion , an Accident doth not move from one Subject to another . Neither must we infer from hence , that upon this Supposition an Accident must remove from one Subject to another ; because the Body that is at Rest , doth not receive the same Numerical Portion of Motion , from the Body that runs against it : But forasmuch as according to the Will of the First Mover , a like motion only ariseth in that Body , which upon the impulse of another , begins to move ( as has been before explain'd , Part IV. Chap. XV. ) it cannot be said , that in this case an Accident removes from one Subject into another . IV. In order to the exact Determination of the Action of Bodies , it is required that they be perfectly hard . This Communication of Motion will be the better apprehended , if we suppose the Bodies that are moved to be perfectly Hard , and so divided from all the rest , that their motion be neither hindred nor promoted by any circumjacent Bodies . For except Bodies were perfectly Hard , they would not be able to act upon one another ; and if they were not separate from all others , so as not to be retarded or turned aside by Ambient Bodies , the proportion or difference of Motions would not be discernible . V. And that the Medium in which they are moved , be no hindrance to their Motions . In the Second place , we are to suppose , that the medium wherein the Bodies move , be such as doth neither hinder nor promote the motion of them . For if the way through which they pass be either soft or fluid , it will hinder their motion , turn it aside , or wholly take it away ; and so no exact account could be taken , what the Force of each Body is in acting or resisting . VI. A Body is not changed but from an External Cause . Thirdly , We are to suppose , that every Body , forasmuch as it is simple and undivided , doth as much as in it lies , continue in the same state ; nor is it ever changed , but by some External Cause . These things being thus far setled , we are , first , to enquire , what must happen at the meeting of two Bodies ? For every one knows by Experience , that Bodies , whether Moved or Resting , variously change the condition wherein they are , according to the different Nature of the Bodies they meet with . Thus , for Example , a Body moved changeth its state , by meeting a Body that is at Rest , otherwise than it would by meeting with a Body in motion . It also variously changeth its motion , in meeting with a hard or liquid Body . And the Rules , according to which these Changes happen , are properly that which we call in general , the Laws of Motion . VII . What Direct Motion is Lastly , We are to presuppose , that Direct motion is the Translation of a Body out of the Neighbourhood of one that is consider'd as Resting , into the Neighbourhood of another , by a right line , which is the shortest of all others , and equally stretch'd out between two Points . VIII . The First Rule . Suppose we therefore the two Bodies A and E to be equal , and to move directly towards one another with the same swiftness ; when they come to D , they will both rebound back the contrary way , A towards the Left , and E towards the Right , with the very same swiftness wherewith they came to D. For these Bodies being supposed altogether equal , must consequently have equal force of Moving and Resisting . And seeing that Motion is not contrary to Motion , there is no cause that can reduce them to Rest : Wherefore we must conclude that they must reflect or rebound with the same swiftness , their Motion continuing whole and entire . IX . The Second Rule . But if the Body A be somewhat Bigger than E , and both be moved with the same swiftness , A towards the Right hand , and E towards the Left , when they meet together in D , E alone will rebound , and afterwards both of them proceed to move , with the same swiftness towards the Right . The Reason is , because every Body that hath less Force , to proceed in a right line , than the other hath to resist , loseth the Determination of its Motion : And it being supposed that the Body E hath less force to proceed forwards , towards the Left , then A hath to proceed to the Right , it follows that E , must lose its Determination , that is , must rebound ; but because A and E , are supposed to move with the same swiftness , and this swiftness cannot be changed by any External cause , therefore it remains in the same state wherein it was before . And accordingly E , will move towards the Right , with the same swiftness it had at first ; and A retaining the same swiftness , without changing its Determination , will move the same way , and follow E , yet without being able to push it forward . X. The Third Rule . Again , if these two Bodies A , and E , be supposed equal in Bulk , but that A moves somewhat swifter than E , then not only E will rebound backwards , but A will also communicate to E , the one half of its swiftness , wherein it exceeds E. That is , if before there had been six degrees of swiftness in A , and four only in E , after their meeting , they would both tend to the Right , with five degrees of swiftness , and so proceed to move the same way with the same swiftness . For seeing that the Body E , hath less force to resist , than the Body A , against which it pusheth , hath to move it , it is agreeable to Reason , that it should give way and reflect , and suffer something from the Body A , and that so the Body A should immediately follow E. But seeng that A hath more Swiftness , it cannot follow E , and proceed the same way with it , without pushing it forward , and imparting so much of its motion , which being added to that which was in E before , makes both their motions to be equal . So that if A hath six degrees of Swiftness , and E but four ; let the two degrees whereby A exceeds E , be divided into four Parts , and then let one part be communicated to E : But because thus the motion of A is still swifter than that of E , let the second also be communicated . And seeing that upon the Communication of these two Fourths , the motion of the Body E , is made as swift as that of the Body A , it will not be able to receive any farther increase from A , and therefore will retain the remaining two Fourths ; and so both of them , with the same swiftness , that is , with five degrees of swiftness , will move towards the Right hand . XI . The Fourth Rule . But if the Body E be wholly at Rest , and somewhat bigger than A , then with whatsoever swiftness A may be supposed to move towards E , it will never be able to move it , but will be beaten back by it , still retaining its motion entire . For a Body at Rest doth more resist a greater degree of Swiftness than a less , and that according to the degree of the Excess of the one above the other ; and consequently there will always be a greater force in E to resist , than in A to push forwards . For a Body at Rest , doth as much as in it lies continue in its Rest , and must by some outward force be driven out of its place , before it can tend any way . Wherefore such a Body doth not only , with all its Parts joyn'd together , resist the motion ; but also proportionably to its bulk , whereby it exceeds other Bodies , it is made more strong to withstand others that oppose it . And therefore the Body E , because of its greater Bulk , hath a greater Force to resist , than A hath to move . By which means it comes to pass , that it is not changed by A , but with the same Force continues in Rest , wherewith the whole Body A will be moved , and dash against it . XII . A Body that is at Rest , doth more resist a greater Swiftness than a less . Now , that a Body at Rest doth more withstand a greater degree of Swiftness , than a less , and that according to the excess of the one above the other , is demonstrable from the most common Law of Nature ; that every thing ▪ forasmuch as it is simple and undivided , continues ( as far as in it lies ) always in the same state , neither is ever changed but by outward Causes . Now the state of the Body E , is Rest , and in the swifter Body A , the state is quite contrary , and that proportionably to the Excess of swiftness . For the slower the motion of A is , the less contrary is it to the state of the Body E , which is at Rest , because slowness of motion partakes of the Nature of Rest . Wherefore , if A with the greatest degree of swiftness be carried towards E , Resting , E will also have an absolute power of Resisting ; and forasmuch as it resists , it will with a greater force of Action , resist the greater force that pusheth it , than a lesser . XIII . The Fifth Rule . If the Body at Rest E , be less than A , then tho' A move never so slowly towards E , it will carry it along , and communicate to it such a part of its motion , as that both of them afterwards may move with the same swiftness . As for Example , If A be as big again as E , it will communicate to E the Third part of its motion , because that one Third part will move E , as swiftly as the Two remaining parts will move A , because it is as big again . And since whatsoever accrues to the one , is the loss of the other , it is necessary that after this meeting A move one Third part slower , than it did at first , that is , in the same time wherein before it run through th● distance of three Foot , it will only move two Foot. In like manner , if A were thrice as big as E , it would communicate the Fourth part of its motion to it . If it were four times bigger , it would impart a Fifth part of its motion ; and so on . But if A should only a Third part exceed E , and consequently should have the Relation to it , not of Two to One , but of Three to Two , then two fifth parts of the motion will be transferr'd from A to E , and three Fifths will still continue in A. If E be one Fourth bigger , and have the same Relation to A , as Four to Three , three Seventh parts of its motion will be communicated to E , and so four Seventh parts will remain to A. This account will be more evident , if we express the foresaid Fractions by whole Numbers : Saying , if A be to B , as 3 to 2 , then of the five degrees , into which its motion may be distinguish'd , two must be communicated , which will have the same proportion to E , as the three remaining to A : And if A be as 4 , and E as 3 , out of the seven degrees of its motion , three must be communicated , which will have the same proportion to E , as the remaining 4 to A. And if A be to E as 5 to 4 , of the 9 degrees into which its motion may be distinguish'd , 4 will be communicated , and will have the same Proportion to E , which the Five remaining have to A. And thus we may proceed to Infinity ; for tho' the excess of Quantity in A , above that which is consider'd in E , does by this means grow less , yet it will always be something ; and since we may always take so many degrees of motion , as there are parts considered in the Body moving and moved , taken together , we find no Reason why A should move E along with it , seeing the difference is of one Sixth ▪ Seventh , Eighth , or even of a Hundredth or Thousandth part , and so on . The account will proceed in the same manner , whether you reckon the Parts of Motion to be so many , as there are consider'd in the Bulk of both Bodies , viz. the Moving and Moved , or whether you attribute two , or three , or four Parts or Degrees , and so on , of motion , to every one of the Parts of Bodies ; because the same Proportion will continue every where between the Motion that is communicated , and that which continues in the Mover . Thus we may say , that if A be one Third bigger than E , of the 10 parts into which its motion may ▪ be distinguish'd , 4 will be transmitted to E , the remaining 6 continuing with A : Or , if we suppse 15 parts of Motion , then 6 will be communicated and 9 will remain ; if 20 , the Body E being a Third part less than A , will receive 8 of them , and A will retain the other 12. For all these Numbers , 12 to 8 , 9 to 6 , 6 to 4 , have the same Proportion together which they ought to have , which is 3 to 2 ; and therefore it is all one which of them you take , and you may increase them to Infinity . And how slow soever you suppose the motion in A to be , it will still in the same proportion act upon E , that is , will always communicate to it only such a part of its metion as shall bear the same proportion to E , as the remaining part hath to A. And thus , if A be as big again , whether it be swiftly or slowly moved , it shall always transfer a Third part of its motion upon E ; if thrice as big , only a Fourth , and so on . XIV . The Sixth Rule . If the Body E , Resting , be exactly equal to the Body A , moved towards it , it will partly be push'd forward by it , and partly beat it back to the opposite side . So that if A should come towards E , with four degrees of Swiftness , it would communicate to E one degree , and with the three remaining parts would rebound to the contrary side . For seeing that both these Bodies are supposed of equal bigness , they must also have the self same Force of Acting and Resisting : Now this Force to Resist in E , is not only Negative , but Positive , or , if you will , Reactive ; because E so admits the motion of the Agent A , as to cause some change in it , to wit , by Reflecting it , and communicating some part of its own Rest unto it . And by this means the Body E obtains the half of its effect . But the Body A , because of its inequality , transfers a part of its motion to E , not the whole ; for so it would tend to its own destruction , by losing all its motion . Thus if the Body A should move towards E with four degrees , in meeting with the Body E , it would impart one degree to it , and would rebound back with the three remaining parts . If with eight degrees , it would impart two of them to the Body E , and rebound with the other six . If it mov'd forwards with twenty degrees , it would communicate five of them to E , and fly back with the remaining fifteen , and so both would obtain the half of that effect , the whole of which they would have , if either of them were greater or less . XV. The Seventh Rule . Suppose we now the Bodies A and E , to move the same way , E more slowly , and A following it more swiftly , so as at last to overtake and touch it : Suppose we also E to be greater than A , but A to exceed in degrees of swiftness the Greatness of E ; in this case A will communicate so much of its Motion , as that both of them afterwards shall move with an equal degree of swiftness the same way . That A must overtake E , appears from the Supposition of its being mov'd more swiftly than E ; and that it must act upon it , and push it on along with it self , is also evident , because upon examining the proportion of Magnitude and Swiftness that is between them , we find that the Excess of swiftness is greater in A , than the Excess of Greatness in E ; and therefore by reason of the inequality of Action and Resistance , it must follow that A , by communicating some part of its motion to E , must push it forwards ; and so both of them with the same swiftness move the same way . XVI . The Eighth Rule . But if the Excess of Swiftness be less in A , than the Excess of Greatness in E , it will rebound back , and retain all its motion . The Reason is , because that which is the stronger in Action and Resistance , must needs obtain its effect . Now seeing the Body E , by its Greatness or Bulk , exceeds the swiftness of A , and has more force to Act and Resist , it must push forwards the Body A , and make it rebound backwards . But forasmuch as every thing inclines to continue in its state , except it be hindred by an outward Cause , and this Cause is found in E , viz. an Excess of Magnitude , above the Excess of Swiftness in A , which changeth the determination of A , but doth not destroy or diminish the Motion it self , therefore it happens that A , by rebounding , loseth nothing at all of its own motion . But if the Excess of Bulk be greater in E , than the Excess of Swiftness in A ; that is , if E be as big again as A , and yet A be not moved with a double degree of swiftness ; then when A comes to dash against E , it will reflect the contrary way , without communicating any thing of its motion . Lastly , if the Body E doth equally exceed A in Bigness , and that it be as big again , which is just as much as A exceeds E in swiftness , and therefore hath a motion , that is , as swift again , it will follow that A must communicate some part of that its swifter motion to E , and with the residue rebound back from it . CHAP. VIII . Of the Ptolomaick , Copernican , and Tychonick Systems of the World. I. What a System is , and how many there are . A System in Natural Philosophy is that , whereby a thing acts after a certain manner , by virtue of its Composition , and those Dispositions which constitute its Nature . Thus we call the System of the World , the Order or Disposition wherein we conceive , that all we see in the World is performed , by supposing it to be compos'd of certain Parts , the Nature and Connexion whereof is such , that thence results whatsoever is , or is done in it . Amongst the Systems of the World , invented by Astronomers , there are Three more famous than the rest , viz. those of Ptolomy , Copernicus , and Tycho Brahe , to which all the rest that have been invented by the Ancients may be referr'd . II. The Ptolomaick System . PTOLOMY placeth the Globe of Earth and Water in the Center of the World , and supposeth it destitute of all motion . Next to the Earth , he placeth the Air mingled with Vapours and Exhalations , which raising it self only a few Miles above the Earth , is called the Atmosphere . Next below the Moon he placeth his Element of Fire ; the several Spaces above which he divides into Eleven Spheres , in the first Seven whereof he ranks the Planets : In the first ☽ , the Moon ; in the second ☿ , Mercury ; in the third ♀ , Venus ; in the fourth ☉ , the Sun ; in the fifth ♂ , Mars ; in the sixth ♃ , Jupiter ; in the seventh ♄ , Saturn ; which he calls Wandring Stars : Not that they wander at Random ; but because they are carried with an unequal motion within the Zodiack , so as not to keep the same Distance from one another , if compar'd with the fix'd Stars . In the Eighth Sphere he placeth the Firmament , in which the fix'd Stars are supposed to be fastned . After these follow two other Spheres , which he calls Crystalline , or the Heavens of Libration and Trepidation ; the first Moving from the East to the West , the other from the North to the South . The Eleventh and highest Sphere he calls the Primum Mobile , or First moved . This Description of the World is by the Common People generally approved and maintain'd ; who look upon the Heaven as a Vaulted Roof , equally distant from us , who are as in the Center and suppose all the Stars that appear in it , to be in the said Circumference of the World. III. The System of Copernicus . NICOLAUS COPERNICUS , a Physician of Thorn , and Canon of Frassenburg , who flourish'd not much above an hundred years since , introduced another System in Imitation of the Pythagoreans , who attributed a motion to the Earth , and plac'd the Sun as the Soul of the World , in the Center of it ; and consequently assigns the same place to the Earth , which Ptolomy allows the Sun , that is , betwixt the Planets Venus and Mars . The Earth , according to Copernicus , hath two motions ; the one Diurnal , which in 24 Hours space is performed about its own Axis , from West to East ; which Motion makes Days and Nights , as shall be said hereafter . And this Motion performs the same Service , which the Primum mobile doth in the Ptolomaick System , to wit , by effecting that all the Stars seem to move from East to West ; much in the same manner as a Ship , which sailing from the Shoar , or towards it , makes the Shoar it self seem , as if it drew near , or withdrew from the Ship. The other Motion of the Earth , is its Annual motion , by which she is carried about the Sun , from the West also to the East , according to the Succession of the Signs of the Zodiack ; by which means , the Sun which stands immovable in the Center of the World , doth seem to run through those Signs , tho' indeed it is the Earth only that truly doth so . And whereas the Space that is between Mars and Venus , is large enough for the Moon to be carried round between them , she accordingly performs there two Motions , the one Monthly , wherewith she is whirl'd about the Center of the Earth , and appears in her several Changes ; the other Yearly , whereby ( together with the Earth ) she goes round the Sun. Wherefore , according to the Copernican System , the Sun is placed in the Center of the World immovable . Tho' this hinders not , but that it may be carried round about its own Axis within the space of 27 days , which that it is , appears by the turning round of its Spots , discovered by the Telescope . Next to the Sun , Mercury is whirl'd about ; in the second place , Venus ; in the third , the Earth , together with the Moon its Attendant ; in the fourth , Mars ; in the fifth , Jupiter ; and in the last , Saturn . After which follows the Region of the fix'd Stars , so called , not because they are without all motion , but because they do not wander up and down like the Planets , but continue in their own places , and keep the same distance from one another , as will be shewed in the XX th Chapter of this Part. IV. The System of Ty●●● Brahe . Besides these two Systems , a Third hath been contrived by TYCHO BRAHE , which partakes of both the foregoing Systems . For as to the Digestion of the Parts of the World , it agrees with the Coper●ican , save only in this , that it constitutes the Earth to be the Center of the Firmament , and accordingly makes the Moon and Sun to run round it . Thus in explaining the seeming motion of the Heaven , which seems to be performed in 24 Hours , he follows Ptolomy , and supposeth the Earth to stand immoved in the Center , and the whole Heaven to be carried round it , from East to West , by the Force of the Primum Mobile . But in explaining the Appearances of the Planets , he agrees with Copernicus ; making Mercury and Venus to be carried round nearest to the Sun , as their Center ; but Mars , Jupiter and Saturn at a farther distance ; and in the middle Space placeth the Earth , with the Moon that is carried round her , in the same time that Copernicus assigns to it . The Tychonick System has this peculiar to it self , that the Planets , which perform their own motions about the Sun , are whirl'd about by it , so as that Mercury and Venue , in their Turnings round about the Sun , do never take in the Earth , as Mars , Jupiter , and Saturn do . So that as Gassendus observes , If instead of the Sun 's whirling about together with Mercury and Venus , who exclude the Earth from the compass they take , and with Mars , Jupiter and Saturn enclosing it , the Earth had been supposed to be whirl'd about with the Moon , comprehending in its compass Venus and Mercury , but comprehended within the compass of Mars , Jupiter and Saturn , it would come to the ●●me thing ; and Tycho's System would appear to be nothing else but the Copernican inverted . V. Ptolomy's System rejected . Having given this brief Description of these three Systems , we are next to examine which of them appears the Truest . For seeing that they all differ , and that the Structure or Disposition of the Parts of the World is but one only , we must reject two of them as false , and choose the third us the truest . And tho' we should suppose nothing of Contradiction to be found in any of these Thr●e , yet ought we to pitch upon that as the best , which appears the most simple , and supposeth least particulars . VI. Many ●●●ngs are 〈◊〉 in ●●e Ptolomaick System , as ●●ing contrary to Experience . Wherefore we cannot admit of the Ptolomaick System , as being contrary both to Reason and Experience : To Experience first , with regard to the appearances of Venus and Mercury , seeing it is evident that these Planets are not always whirl'd about on this side of the Sun , as Ptolomy supposeth , but sometimes appear above , and sometimes beneath , yea , and sometimes also side-ways to it ; so as that sometimes they are nearer to , and at other times they are further from us than the Sun. For this Cause Copernicus took occasion from the various appearance of Mars , to assign motion to the Earth . For he perceiving that Mars , whilst he is opposite to the Sun , appears much greater ; and that he grows less , as he nearer approacheth to it , could not attribute this change to any thing better , than to the Circumrotation of the Earth : According to which , it was necessary for Mars to appear biggest , when the Earth moves nearest to him ; and least , when the Earth leaves him on the other side of the Sun. Secondly , Pursuant to this System , no Reason can be given why Mars , Jupiter and Saturn are always in the lower part of their Epicycles , when they are Retrograde . Whence it is that the Moon doth always turn the same part of her Body towards us : Why Saturn appears in a various shape to us , sometimes Oval , and at others Round , when beheld through a Prospective . Thir●y , This Hypothesis doth not explain the contrary Motions , whereby the Stars at the same time seem to move from East to West , and from West to East . Fourthly , Neither can the rise of Comets , nor their motions , be solved , as long as we suppose the Heavens to be solid , as he doth . Fifthly , According to this Hypothesis we cannot give any account , how the Spots about the Sun are generated , and afterwards dissipated ; nor how they can perform their Circuits about the Sun. VII . This Hyothesis is likewise contrary to Reason . This System is also contrary to Reason , by allowing the motions of Trepidation and Libration to the Crystalline Heavens . For what is more misbecoming a Philosopher , than for the extricating of a lesser Change , to admit a far greater ? For a Body that is carried towards one Point , tho' by an uneven motion , questionless doth not undergo so great a Change , as another , which is also carried towards one Point , and suddenly rebounds to the opposite Point . To this may be added , that it was in vain that the Ancients had recourse to this motion , for the explaining of the Equal progress of the fix'd Stars ; since the most exact Astronomers frequently Experience , that what they deduce thence by their Computations , doth not correspond with the Phaenomena . Besides , the Motion of the Heavenly Orbs will be swifter than can be competent to such vast Bodies , and more especially to the Brittle Crystalline Spheres ; for the utmost Sphere of the World must be whirl'd about in 24 Hours . Moreover , what is more improbable than that the Primum Mobile should have the force to carry round with it all the Inferiour Orbs , from East to West ; and yet that the Earth , which is included in them , should remain unmov'd ? When yet , according to Ptolomy , the Earth is altogether Passive , and is encompass'd with the subtil Matter . These Absurdities are sufficient to make us reject this Ptolomaick Hypothesis . VIII . The Tychonick System also hath its Errors . Tho' the Tychonick Hypothesis seem more probable than the Ptolomaick , forasmuch as it gives an account of the Inequality and Diversity of the Coelestial Appearances , yet is it not without its obscurity and defects . For it seems in a manner to disjoynt the whole System of the World , forasmuch as whilst the Sun ( the Center of Five of the Planets ) whirls about the Earth in its Annual motion , this his Annual motion is entangled with the proper motions of the several Planets ; for the explaining whereof he is fain to make use of a Circle , describ'd from the Suns Center with two Epicycles ; whereas the structure of the World , is without doubt very far from any intricacy or confusion , and allows every Planet a sufficient Space to run its Course in . IX . And is to rejected , as well as the Ptolomaick . Besides , this System h●th several other Defects for which it is to be rejected , as well as the Ptolomaick . For tho' it admits of less Suppositions for explication of the Motion of the Planets , and gives a plausible account of the Appearances of Venus ; yet it cannot be deny'd , but that it requireth something , which the Mind of Man can hardly assent to , in that it supposeth that Motion , whereby the Mass , consisting of the Heavens and Planets , in Twelve Months time , moves towards all parts of the Firmament . For tho' we should admit , that it had been put into such a motion by the Author of Nature , at the beginning of the Creation ; yet withal we must suppose , that according to the Laws of Nature , which GOD himself hath established , the said Motion , in success of Time , must be diminished , and at last cease altogether ; since ( according to the same ) it must have been communicated to the Heavenly matter , which the foresaid Mass , to which BRAHE assigns this Motion , drives from those Parts to which it tends . X. The Copernican System is to be preferr'd before the two former . It remains therefore , that we only admit of the Copernican System , as being both more plain and simple than the two foregoing , and solving the Phaenomena of the Heaven the best of the three . But forasmuch as Des Cartes professeth himself to dissent from COPERNICUS and TYCHO as to the Motion of the Earth , which he denies with more Truth than TYCHO , and with more curiosity than COPERNICUS , we intend last of all to propound his Scheme , as the only true one . CHAP. IX . Of the true Systeme of the Vniverse . I. The C ●ernico ▪ Cartesian Hypothesis explained . DES Cartes supposeth that Matter indefinitely extended , and by motion imprest upon it , divided into various Particles , did run together into several Vortexes or Whirl-Pools , whirling about some certain Points with a most swift motion ; that the more subtil matter gathered together about the Center of these Vortices , constitutes the fixt Star ; that the matter which is a degree bigger , makes the Heavens ; and that the more solid Bodies ( such as is the Earth and the rest of the Planets ) hanging poisd in this fluid matter , comply with the motion of the Vortex about the fixt Star , and may over and above this , be whirld about their own Axis ; as we often see that Bodies , carried in a fluid Stream , are turn'd round by a motion of their own , that is , proper to themselves , and not derived from the Stream wherein they are carried . II. The first Heaven . Moreover Des Cartes divides all the Vortexes , that comp●se this World into two Heavens . In the first , he supposeth all the Matter of Heaven in which the Planets move , to run round continually in manner of a great Vortex , or mass of fluid Matter whirling round , in the Center whereof is the Sun , S , and that those Parts that are nearer to the Sun , move more swiftly , than those that are more remote , and that all the Planets ( of whose number also the Earth T is , ) have their course continually amidst the Parts of that Caelestial Matter . III. The second Heaven . The second Heaven comprehends an immense number of other Vortexes , which surround this Vortex or first Heaven A , B , C , which in their Centers have the several fixt Stars . And because we are uncertain at how great a distance the fixt Stars are from us , and cannot conceive them so remote as to contradict the Phaenomena , we will not content our selves with placing them above Saturn , but will take the liberty to conceive them much higher ; seeing that it is apparent from the Coelestial motions , that they are so far distant from us , that Saturn compar'd to them , seems to be very near us . Des Cartes to illustrate the Truth the more about the motion of the Planets , and especially of the Comets , made no difficulty to assign an immense distance between Saturn and the fixt Stars . IV. The distance of the fixt Star● from the Sun. Neither is this in the least contrary to Reason , forasmuch as we know that Mercury is above two hundred Diameters of the Earth distant from the Sun ; Venus above Four hundred ; Mars Nine hundred or a Thousand ; Jupiter above Three thousand , and Saturn Five or Six thousand . And proportionably we may extend the Space between Saturn and the fixt Stars , to any distance how vast soever . For tho the Region of the fixt Stars , be commonly reputed the utmost Bounds of the World , yet its Figure cannot be certainly determined by us , seeing we can perceive nothing of its Internal nor External Superficies . V. Saturn is the First of the Planets . The first of the Planets and nearest to the fix'd Stars is Saturn , who sometimes appears as if he had three Bodies , sometimes Long or Tall , sometimes Sphaerical , sometimes Oval , with Ears and Ear-rings . For tho' Saturn like the other Stars , be of a Round Figure , yet is he surrounded with a broad Circle or Ring ; standing at an equal distance from him ; the proportion of the Semidiameter of the Planet , being to the distance of the Ring , as 3 to 5 : but the entire Diameter of the Ring , to that of Saturn is about the proportion of 11 to 5. The Ring is thin , but broad , and if continued , would pass through the Center of Saturn . This Planet being most remote from the Sun , the Center of this our World , and being moved in a large Vortex , is almost 30 years in finishing his Circuit in our Heaven ABC . VI. Saturns three Satellites . Three Satellites or Guards , are observed to move about him , the First whereof is distant from the Center of Saturn , one Diameter of the foresaid Ring , and performs his Circuit about Saturn in the Space of 4 days , 12 hours and 27 minutes . He is seen through a Telescope of 35 Foot , in his furthest digression from Saturn , but is imperceptible when nearer to him . The Second is much more illustrious , and may be descried by any moderate Telescope , and is distant from Saturn four Diameters of the said Ring , and whirls round him in the time of 16 days and 23 hours . The Third is distant from him 10 Diameters of the Ring , and performs his Circumvolution in the Space of about 80 days . VII . The Second is Jupiter . The next to Saturn is Jupiter , who absolves his Course in almost 12 years . He hath four less Planets , as so many little Moons to be his Companions , to which GALILAEUS gave the name of the Medicaean Stars , because he first discovered them in the Dominions of the Duke of Florence . Their special names are , the Jovial Saturn , Europa , Ganymedes , Calisto ; whereof the First or remotest wheels about Jupiter in 16 days ; the Second in 7 Days ; the Third in 85 hours , and the Fourth in 42 hours . VIII . T●● 〈◊〉 is Ma●● . The Third Planet Mars is carried about a in greater Vortex than the Earth , and in a less than Jupiter ; and finisheth his Revolution in near two years . In the midst of this Planet CAMPANELLA by the help of Prospectives discovered a Black Mountain , higher than the Mountains of the Moon : From whence , as likewise from the Spots , wherewith his Face is sprinkled , CASSINUS gathered , that Mars was whirld about his own Center in the Space of 24 hours and 49 minutes . There is also a round Ring somewhat resembling a Rainbow , but of a Redder Colour , which surrounds the Foot of that Mountain . IX . The Fourth is the Earth The fourth place is taken up by the Earth , which absolves its Course together with the Moon , ( which she carries about in her Vortex ) within the Space of a Natural year . All the Matter that reacheth from the Earth to the Moon , is called Elementary Matter ; and because this Matter contains many parts , which are moved more swiftly than the Rest , it follows that they must all of them be unequally determined to recede from the Center of their Motion , and that those which are more swiftly moved , withdrawing themselves with greater force , do by this means thrust the other parts downwards : Which is the cause of Gravitation , as hath been said before . X. The Earth is not placed in the Center of the World. Now that the Earth is not placed in the Center of the World , but rather is as far distant from the Center , as from the Sun , appears from hence ; that all the Planets are sometimes nearer , and at other times farther from the Earth ; and that with such a vast difference , that Venus when she is farthest from us , is at a six-fold greater distance , than when she is nearest ; and Mars is eight times farther distant in the one State , than in the other , which could never be , if the Earth were the Center of the World. XI . The Fifth is Venus . The Fifth is Venus , who runs her course in 224 days . She is carried below the Earth , surrounding the Sun , which may be concluded from the changes of her Figure and appearance , proceeding from the Illumination thereof . XII . The Sixth is Mercury . Next to Venus is Mercury , finishing his Course about the Sun S in the Space of 80 days , or as others will have it in 87. He very rarely appears , being for the most part obscur'd by the Suns Rayes . Hence GALILAEUS conceives , that Saturn for his slowness , and Mercury , for his almost continual occultation , ought to be accounted the last of the Planets . Now forasmuch as Mercury doth not appear , but in his farthest Elongation from the Sun , he is seldom seen Round through a Telescope ; but sometimes as it were cut in two , as the Moon in her Quarters , sometimes more Gibbous , and at other times hollow ; and being nearest unto the Horizon , and obscur'd by Vapours , its Figure or Bulk can scarcely be discovered . XIII . The Sun is the Center of the whole compass of the Heavenly Matter . In the midst of this great Vortex the Sun is placed , as in the Center of the World unmoved , and like a Prince seated in his Royal Throne , Illustrating all the Bodies about him , both Cherishing , and Quickning them with his Heat . TRISMEGISTUS calls him the Visible God , and SOPHOCLES gives him the Epithet of Beholding all things . But notwithstanding what we have said of his being unmoved , he may whirl about his own Axis , in the of Space of 24 days , which Astronomers conclude from the most constant Motion of its Spots . XIV . All the Planets are moved from West to East . Tho' all the Planets with regard to their different Degrees of Solidity be unequally distant from the Sun , the Center of our Vortex , A , B , C ; yet is this common to them all , that they perform their Periodical Motions after the same manner , viz. from West to East , or from A , through B , towards C , according to the succession of the Signs of the Zodiack . Save only that the Earth is carried with a threefold Motion , and as the chiefest Star amongst the Planets , hath the Moon for her Attendant : So that the Vortex , which hath the Earth for its Center , carries the Moon about the Earth in a Months Space , the Earth it self being whirld about every day , round its own Axis . Thus in the same time , that the Earth and Moon finish their Common Circle , or Great Orb once , the Earth is 665 times whirld about its own Axis , and the Moon twelve times carried about the Earth . XV. An Objection answerd . The Common Objection against this Hypothesis is , that the Horizon in all parts of the World , divides all the great Circles into equal Parts , so that always one half of the Equinoctial is above it , and the other half under it , and consequently always 6 Signs of the Zodiack above the Horizon and as many under it ; whence it must follow , that the Earth is in the Center of the World , and not the Sun. To which I answer , that this proves indeed , that the Earth is in the midst of all the great Circles of the Sphere , but not that she is in the Center of the World , because it is our Imagination only , that represents these Circles about the Earth . Accordingly it would be a false consequence to say , that the Earth is in the Center of the World , because the Parts and Degrees of the Earth , do correspond proportionably to the Parts and Degrees of Heaven ; for on the contrary it follows that these Circles are equally distant and proportional in their Parts , with regard to the Earth , seeing that it is our Imagination which conceives them round its Center . XVI . The Planets may more properly be said to Rest in their Vortex than to be moved . Notwithstanding the Earth and all the other Planets be carried by the Celestial matter that surrounds them from West to East , yet they may more properly be said to Rest than to move . For seeing that Local motion is nothing else but the Translation of one Body , from the Neighbourhood of those Bodies , which immediately touch it , and are considered as immoveable , into the Neighbourhood of other Bodies , and that neither the Earth , nor any of the other Planets , are translated from the Neighbourhood of those parts of Heaven that immediately touch it , and are lookt upon as immoveable , the Earth and Planets acording to the Truth of the thing are not moved , that is , have no motion properly so called . XVII . Neither the Diurnal nor Annual Motion do properly belong to the Earth . Yea , if we give head to the Definition of motion we shall easily discern , that that which we call the Diurnal motion doth not belong to the Earth , by it self considered , but as it is an Aggregate of Earth , Seas and Air , seeing it is to be lookt upon at altogether at Rest , whilst it is whirld about by the stream of the Heavenly matter wherein it swims ; like as a Man who sleeps in a Ship , is said to Rest , whilst the Ship is carried from one place to another . We shall also perceive , that the Annual motion of the Earth , whereby it is carried about the Sun from West to East , through the Signs of the Zodiack , cannot be ascribed to her , but to the Coelestial matter , which carries this vast Mass round the Sun. XVIII . The Orbs of the Planets are not exactly Circular . Moreover we are to mind that the Circuits the Planets make about the Sun , are not perfectly Circular : For as we see that in some parts of Rivers , where the Water whirling about , makes a Vortex , and carry many Straws along with it , some of them at the same time are whirld round about their own Centers , and are moved more swiftly as they are nearer to the Center ; and tho' they incline to move Circularly , yet do not always describe exact Circles ; so we may without difficulty imagine all the same things concerning the Planets . As is mani●●●t from their nearer and further distances from the Sun , and from their Descent and Ascent in the Zodiack , being sometimes above the Ecliptical 〈◊〉 and at other times under it . CHAP. X. That the Heavens are Fluid Bodies . I. It is no 〈…〉 m●tter to ●●ow the Nature of the Heavens . IT will not be difficult to have a certain knowledge of the Nature of the Heavens , if we consider that the Matter whereof they consist , is the same with that of the Inferiour World , nothing being to be found in it besides Divisions , Figures , Magnitudes and Motions . Which Modifications , wheresoever they are , still cause the same changes . And therefore we are to Philosophize concerning the Heavens no otherwise , than of our Bodies here below . II. . We are therefore to suppose that Bodies are either Hard or Fluid . Hard are those whose parts are so joyned , as not to be separable from one another without difficulty . Whereas Fluid are such whose Parts do readily give way : But how it comes to pass , that some Bodies do easily give way to others , and that others are not removed from their places without Force and Difficulty , we shall easily apprehend , if we consider , that these things which are moved , do not hinder other Bodies from entring their places ; whereas those that are at Rest , are not without some force pusht out of them . III. The Parts of Hard Bodies are at Rest , and those of Fluid , in motion . Whence it follows , that those Bodies are Fluid whose parts are tossed with various Motions ; and those Hard , whose Parts being closely joyned together are at Rest . And tho' it may be our Sense may not perceive the parts of Fluid Bodies to be moved , yet are not we therefore to deny it ; because we see the Water and Air do corrupt solid B●dies , which cannot be done without Motion . IV. The Heavens are no Solid or Hard Bodies . We say therefore , that the Heavens are no Hard or Solid Bodies , but Fluid . For if they were Hard , they could not transmit the Light of the Stars : For Hard and Diaphanous Bodies , transmit the Light because their Pores are rang'd in Right Lines , which could never be , if the vast Bulk of the Heavens was Solid like Crystal , or did much infringe the Light , as we see , that when many pieces of the clearest Glass , are laid one upon one another , they become very opake . V. Supposing 〈…〉 were ●olid , the s●p●r●er ●●heres , cou●d not carry t●e inferior along w●th ●em . If the Heavens were Hard , we could never explain how the Lower Heaven should be snatch'd along by the Heaven above it ; as the Peripateticks imagin . For how can the Heavenly Orbs , supposed polisht and even , hurry away with their Motion the Spheres that are under them ? Yea when the Sun and the rest of the Planets , are whirld about round their Center , as hereafter shall be declared , no reason can be assign'd , why they should not as well be carried in the Liquid Aether . And indeed all the Antient Philosophers , before ARISTOTLE , were of Opinion that the Stars moved in the Heavens like Fishes in the Sea. And Astronomers are of the same Mind , who have observed that Mercury and Venus have sometimes got above Mars , and come down again , which could never be if the Heavens they move in were Solid . VI. The Motion of the Comets and Stars , is a pregnant proof of the Fluidity of the Heavens . The same may be evinced by the Comets which are found to be above the Region of the Moon , and to slide through those Aethereal Spaces , which could not be without those Spaces were filled with a Fluid Body . The Astronomers have also observed , that the Medicaean Stars , do roul about Jupiter , as Venus about the Sun , which likewise proves the Fluidity of the Heavens . VII . The Fluidity of the Heaven proved by the Spots of the Sun. Neither only are those Heavens Fluid , which contain Mercury , Venus , Mars , Jupiter , Saturn , and our Earth , together with the Moon its Companion , but the Matter of the Sun it self is also Fluid , and is continually whirld about its own Axis , as is evidenced from the Motion of the Spots about the Body of the Sun ; for they are not generated in the Air , as some have supposed , but in the very Body of the Sun. For at first they are seen in the midst of the Suns Body , and near to his Ecliptick , and never towards the Poles of the Solar Body . This is confirmed by many Astronomers , who at great distances of Place , have observed the very same Spots , at the same time , and in the same places . Now that the Sun doth not only move these Spots , but also the Planets that are about him , appears from hence , that the nearer any Planet is to the Body of the Sun , the swifter it is turnd about . And the same is to be conceived concerning that vast Space , which is found about every fixt Star. VIII . How the fixt Stars keep the same distance from one another . But you 'l say first , that the fixt Stars observe the same distance from one another , which could not be if they wanderd in a Fluid Heaven , changing their places , as is evident concerning the Planets , who oft enter one anothers Orbs. I answer , that the equal distance the Stars keep , doth not prove the Solidity of the Heavens , but that they possess some determinate Orbs. For the fixt Stars are not placed in the Circumference of one Sphere as some imagin , but every one of them hath its own Space or Orb ; and because they observe the same Order and Propotion amongst themselves , therefore are they called Fixed . IX . Fluid Bodies have the Force to carry Solid Bodies along with them . In the Second place you 'l say , If we suppose the Heavens to be Fluid , it cannot be conceived how Solid Bodies can be carried about in them , seeing that they have not so much Power , but do readily give way to Hard Bodies . And indeed what likelyhood is there that , that which is Hard and Solid , should be hurried along by that which is Fluid and Weak ? I answer , that it must indeed be confessed , that Fluid Bodies are not of so great force , as those that are Solid , to hinder the motions of other Bodies , for seeing they having a motion themselves , and that motion is not contrary to motion , they do not resist them so much as Solid Bodies . But for all this it cannot be denied , but that the motion of Fluids where determin'd one way , doth carry all Hard Bodies , along with it . As appears in a Stone , which the Water of the River carries along with it , so long as it is not detained by some External Cause . And therefore there is good ground why the Globe of our Earth , resting in the pure Aether , should easily be carried about by its Heaven . In like manner as we see Straws on the surface of the Water carried about by the whirling round of the Watter , whilst some of them whirl at the same time about their own Centers , being all of them moved the swifter , by how much the nearer they are to the Center of the said VVhirle-pool . X. A Hard Body , n●w great soever it is , resting in a Fluid , will be moved by the least force . The Reason whereof is , because a Hard Body encompass'd with a Fluid , and Resting in it , lies there as in an Equal Poise ; and how great soever it may be , will be easily carried away by a little force , whether that Force come from abroad , or that the fluid Body it self , wherein it is contain'd , be wholly carried one way ; as the Course of Rivers tends towards the Sea ; or as the Air , when the East-Wind blows , is carried towards the West ; which whenever it happens , any hard Body that is in that fluid , must of necessity be carried along with it . XI . The Heaven hinders the Earth from Falling . Hence we may infer , that seeing the Heaven doth on all sides surround the Earth , and drive all the Bodies , that are on the surface of it , towards its Center , it doth by this means keep it from Falling : So that the Earth cannot but be carried along by it , and being thus without any motion of its own , yielding only to that of the Heavens , it may with good reason be said , to be at Rest . And the same may be said of the Sun , who is hindred by the Globuli of the Second Element , which surround him , from flying from the Center ; and the lower Globuli , by those above them ; and the utmost , by those of the contiguous Vortexes of the fix'd Stars , who by a contrary pressure do keep them within their Bounds . CHAP. XI . How the Heavens were disposed at first , and of their divers Motions . I. Three things are to be suppos'd here . IT will not be difficult to demonstrate the first Disposition of the Heavens , or that order which the Heavenly Orbs now observe , and did from the Beginning , by supposing only a few things , which we have proved in the Fourth Part. II. The First . First , That there is no Vacuum in Nature ; for seeing that Space is not distinct from a Body , it must necessarily follow , that wheresoever Space is found , there must be a Body also . III. The Second . That there can be no penetration of Dimensions ; for seeing that the Conception of a Body involves Extension , and by it excludes all other Bodies out of the same place with it , it is evident that many Bodies cannot be contain'd in the same place . IV. The Third . Whatsoever is moved , is moved in a Circle ; for seeing all places are fill'd with Bodies , it is clear , that one Body cannot be removed out of the Neighbourhood of some Bodies , into the Neighbourhood of others , without being mov'd in a Circle . So that when any Body enters into a place , the Body that was there before leaves it , and enters into the place of the next , and so on to the last ; which at the same instant of time enters into the place the first Body hath left . V. What we are to understand by the words Vortex , Center , Ecliptick , Poles and Axis . It will not be amiss for us also to explain what we intend by the Words , Vortex , Center , Ecliptick , Poles and Axis . By the word VORTEX we understand , a vast number of parts of Matter , which move together about the same Center . By the Center of a Vortex we mean , the point about which all the parts of Matter that constitute the Vortex do move . And because when a Vortex turns round , all the Points of the Surface describe Crooked lines , which resemble Circles , except two that turn about themselves , we call those two Points the POLES ; and the Circle , which is equally distant from the two Poles , we call the ECLIPTICK ; and the Right line , which reacheth from one Pole to the other , passing through the Center of the Vortex , we call the AXIS . VI. How the Vortexes came first to be . These things premis'd , we say that the Parts of the Universe , being in the Beginning of the Creation put into motion , must naturally run themselves into several Vortexes ; for these Particles being of different bulk and figure , and unable to move forwards in Right lines , because of their various determination , they were forced to move in Circles , and by this means did constitute Vortexes of a stupendous Magnitude , according to the Quantity of the Matter . For it is an unquestion'd Truth amongst Philosophers , that a Body which is dash'd against another , must of necessity rebound back from it , and so be carried in a Circle , that it may continue its motion , which may be proved by many Experiments . For the Vortexes of the Air , or those of the Water , which we see in Rivers , are caused , because the Vapours that make the Wind , and the running Waters , being beat back by occurring Bodies , are hindred from moving strait forwards : and therefore being reflected on one side , must necessarily turn round , because the subsequent Air , or Water , is successively push'd forwards after the same manner as the first , and so must twist in and be carried Circularly . VII . The Divisibility of Matter being suppos'd , the Vortexes could not but be made this way . That this was the Original of the Vortexes is unquestionable , by those who admit the Matter of the World to have been divided into particles of different Magnitude and Figure ; and that they had as much motion from the beginning , as there is now found in the whole Universe . Because these Particles dashing one against another , must needs be carried round about divers Points , and so run together into divers Vortexes . So that all the Particles that were whirl'd about the Sun S , did constitute the Vortex , terminated by A , YB , M , and that others which roul'd about the fix'd Stars L , C , O , K , compos'd other Vortexes . VIII . That there are but two visible Heavens . We admit only two visible Heavens ; the first , that whose Center the Sun S is , in which we live , and wherein Venus , Mercury , the Earth and the rest of the Planets are contained , and in which they are roul'd about with various motions . And the Second Heaven is that which contains innumerable Vortexes ZLZ , MCM , YOY , TKT , which have fix'd Stars in their several Centers , and on every side surround the First Heaven S. Whatsoever reacheth beyond these Heavens , does not fall under our Senses , tho' we conceive it Immense , and not confin'd within any Limits , being therefore called an Expansion or Firmament , from its vast and Indefinite Extension . IX . How the Vortexes came to be divided , and what the Form of them is . The Disposition therefore , and ordering of the several Bodies of this World was made , when the Planets , and all other Bodies that lay confounded together in the Chaos , were separated by the subtil Matter flowing between them , and got into several places , according to the thickness and solidity of the Matter . Whence it is evident , that the Forms of the Vortexes , are the very first and most simple Forms that were ever introduced into the Matter ; they are the First , because they are the immediate product of the Laws of Motion ; and the most Simple , because they suppose none before them ; and because all other Forms depend on them , as on their Principles . X. How these Vortexes can perform their Motions without hindring one another . There is one Difficulty seems to arise from the Disposition of these Great Bodies , viz. how these Vortexes could fall into such a motion , as that one should not hinder the other . For it is hard to conceive how Bodies of so great a Bulk should not interfere with one another in their Circumvolution , seeing that according to the Laws of Nature , the motion of one Body is turned aside by the meeting of another . XI . The Difficulty answer'd . This Difficulty may be answer'd by shewing , that these Vortexes may be so placed , that their Motions will rather further than hinder each other ; that is , if we conceive them so ranged , that the Ecliptiek of one , ( or that part of the Vortex , which whirling about its Axis describes the largest Circle ) do correspond to the Poles of the other : For by this means they will so agree together , and move so freely , as not in the least to hinder one another . XII . The Vortexes must be so di●posed , as that the Poles of one Vortex may touch the Ecliptick of anoth●r . Yea , if we examin the matter , we shall find that the Heavenly Vortexes cannot be so , but that the Poles of one must touch the Ecliptick of another . As suppose the first Vortex , whose Center is S , be moved from A , toward Y ; another Vortex contiguous to it , whose Center is O , and another whose Center is C , must touch it in those Parts that are most remote from both the Poles A and B , of the Vortex S. For if we should suppose the Poles of two Vortexes to touch one another , they will either by a like determination of motion be carried the same way , and so will run one into another ; or they must by a different determination be carried oppositly to one another , and so clashing in their motions , they will never be able to continue them long ; and therefore to the end their Motions may not interfere together , the Vortexes must be so ranged , that the Pole of one Vortex may not touch that of another , but the Ecliptick , or those parts which are most remote from them ; forasmuch as by this means they support and preserve one another . XIII . Those Parts of a Vortex which are nearest to the Center , are most swiftly moved . The First Heaven , in which the Sun S is the Center , and by the force of whose motion the other Planets are wheel'd about , is most swiftly turn'd round by it ; for the Sun being with great celerity whirl'd about its own Axis AB , carries the nearest parts along with it , and imparts his motion unto them : So as that the parts nearest to him are more swiftly moved , than those that are more remote , and so on to the Region of Saturn HNQR , where the parts of the Heaven are moved slowest of all . The Reason whereof is , because those parts that are nearer to the Center of the Vortex , are less than those further off , and consequently are more swiftly moved . And that the parts towards S , are less than those that are about HNQR , is evident ; for that if they were bigger or equal , by being so near the Center of the Sun , they must needs be more swiftly moved , and by consequence possess themselves of Higher places . XIV . Those parts of the Vortex which are above the Region of Saturn , are more strongly moved . According to this Proportion therefore , the motion of the Celestial Matter , grows by degrees more slow to a certain term , beyond the Region of Saturn HNQR , where the highest or utmost parts of this our Vortex begin to be more swiftly moved , not by the Sun , as is apparent enough ; but from the Neighbouring Vortexes , which surround the First Heaven ; for they being unequal , do variously shake the Surface of the First Heaven , and thereby conduce to the swiftness of those Parts . This great degree of their swiftness , appears from the swift motion of the Comets . XV. The Motions of the Vortexes are Circular . From what hath been said , we may gather these two things : First , That the Vortexes are circularly moved ; for being hindred by other Bodies , from proceeding in a Right motion , they are forc'd to change the same into a Circular , and therefore must continually be whir'd round . XVI . It is not necessary that the Vortexes should be exactly Round . Yet is it not necessary that these Vortexes therefore should be exactly Round ; for tho' they counterballance one another by their equal Force , yet is not this Force equally dispers'd through all their parts ; because those which are about the Ecliptick of one Vortex , are always more strong than those that are towards the Poles of another : Which makes ( since the Ecliptick of one Vortex commonly meets with the Poles of others ) the parts that are about that Ecliptick , to advance more towards the Poles of other Vortexes , than the parts which are about the Poles of other Vortexes , do advance towards this Ecliptick . We see also in the precedent Figure , that the Neighbouring Vortexes make the Vortex S , which is between them , irregular . XVII . The Heavens are moved continually . Secondly , We may gather from what hath been said , that the Motions of the Vortexes are perpetual , since there is nothing that can be assign'd that should change or diminish their motions . For a Body therefore only ceaseth to move , because by running against another Body , it imparts its motion unto it , which cannot happen to the Heavens , because they have no Bodies at Rest , or slowly Moved , to which they may communicate their Motion , and so come to lose it . For the Law of Nature requires , that every thing , inasmuch as it is single and undivided , should remain in the same state , nor ever be changed , but from External Causes ; and since no such Causes are in the Heavens , but all the Vortexes do comply together , we are rather to conclude , that they maintain and preserve one another . XVIII . A small Vortex may preserve it self , amongst others that are greater . As to the Bigness of the Vortexes , we have no reason to think , that all those which were the result of the First Division of the Matter , were all of them Equal . For as the only Reason we have to believe , that the vast number of Vortexes are not confounded one with another , is , because their Forces are equal and opposite ; we may also well imagin , that a Vortex , which is less than those that are about it , will for all that preserve its station amongst them , if we consider that the Defect of its Bulk may easily be made up by its greater degree of Swiftness in motion . This Inequality of the Vortexes is represented to the Eye in this Figure , where the Vortex S , tho' greater , cannot destroy that of O , nor K , tho' lesser than it . XIX . What Bodies are said to be Heavy . We may gather from what hath been said , why gross and Earthly Bodies , are Heavy about the Centers of the Vortexes ; tho' Light , when they are at a distance from them . For seeing these Bodies derive their motion from the subtil Matter wherein they swim ; which Matter is actually turn'd Round , and inclin'd to move forwards in strait Lines ; it by this means communicates its Circular motion to those thicker Bodies , which it carries along with it ; but not the Force it has in proceeding in right Lines , save only so far as that Force accompanies the motion it imparts to them . But because the subtil Matter , which is about the Center of the Vortex , hath much more agitation than is required to Circular motion , ( for every of the Particles , besides the Circular or Common motion , are also variously moved ) it so happens that those Bodies which have less motion , have also less force to continue their motion by Right lines , and by this their weaker force , are forc'd to give way to those , which with greater force press on towards Strait lines , and therefore must tend towards the Center of the Vortex , that is , become so much the more heavy , as they are more solid . XX. What Bodies are said to be light . But when Earthly Bodies are at a great distance from the Center of their Vortex , seeing the Circular motion of the subtil Matter is very intense , forasmuch as it employs almost all its motion in its Revolution about the Center of the Vortex , they have the more agitation , as they are more solid , because they follow the motion of the subtil Matter in which they swim ; and therefore have more force to continue their motion according to a Right line : so that the grosser Bodies , at a certain distance from the Center of the Vortex , are by so much lighter , as they are more solid . For by the word Lightness , we understand nothing else , but the Endeavour wherewith the Bodies that are moved Round , tend to withdraw from the Center of their motion ; as by the word Heaviness we understand that strift , whereby less agitated Bodies , or less solid , are thrust down towards the Center of their motion , by such as have more force than they to withdraw from it . XXI . The Planets are not Heavy . From hence it is evidently deducible , that the Earth about its Center is very solid , but less towards the Circumference ; as also that the Water and Air must continue in that situation wherein we see them , and that consequently they are Heavy . For seeing all these Bodies are more solid than the Matter of the First or Second Element , they cannot avoid being push'd towards the Center by it : Whereas the Moon , being at a considerable distance from the Center of the Vortex of the Earth , is not look'd upon as Heavy , tho' it be a solid Body ; as neither Mercury , Venus , Jupiter , and Saturn , which cannot fall down towards the Sun. CHAP. XII . Concerning the Action and Motion of the Heavenly Matter . I. How Light was made in the First Day of the Creation . HAving thus been inform'd how the Heavens were ranged , and what Order they still keep , we are next to consider how the Heavenly Matter is moved , and what Action it exerts in them . For as soon as the Vortexes began to be formed , it could not be but that some part of the Matter of the First Element , made by the rubbing of the divided particles against one another , must be gather'd towards the Center , and from thence propel the surrounding Globuli , which was sufficient to make Light. And thus we may perceive how Moses is to be understood , when he saith , that GOD divided the Light from the Darkness , and that Light was in the First Day of the Creation : Because the Matter of the First Element , which was about the Center of each Vortex , press'd the Globuli of the Second Element , and so procured the Light. Yea , this was in some measure effected upon the first Turn of the Vortex , before the subtil Matter run to the Center . For by the name of Light we can understand nothing else , than that pressure of the Globuli in Right lines , which does excite in us the sense thereof . And therefore , when it is said , that GOD commanded the Light to be , it must be thus understood , that GOD put the parts of Matter into motion , and gave them an Inclination to continue the same in a strait Line . II. How the Sun and fix'd Stars were made the Fourth Day . But after that the Matter of the First Element , by the continual rubbing together of the several Bodies was increased , it betook it self in great Quantity to the Centers of the Vortexes SLC KO , and there made the Sun and the fix'd Stars on the Fourth Day . For seeing that all Circular moved Bodies , continually strive to recede from the Center of their motion , and that those that are strongest recede farther than such as are weak ; it follows , that the Particles of the Second Element , that are more strong than those of the First , because they are solid , do more recede from the Center of their Motion , and that in this their recess they push down thither all those Particles of the First Element , that are left after the filling the Intervals , which are between the Particles of the Second Element . Whence it follows , that about the Center of each Vortex , there is a Body only composed of the Matter of the First Element , which cannot but be of a Round Figure that way it turns ; that is to say , If one should cut it by a Flat parallel to the Ecliptick , in what part soever this Section should be made , it would be always a Circle : For otherwise it must be supposed , that some Particles of the Second Element are not so far removed , as they might be , from the Center which they describe , which is impossible . III. What we understand by the word Star. Now that Body of the First Element which is formed in the Center of a Vortex , is commonly called a Star ; so that by this word STAR , we understand nothing else , but a Body compos'd only of the First Element , which has been driven by that of the Second , towards the Center of each Vortex . IV. The most subtil Matter is most strongly mov●d within the Bodies of the Stars . It is evident from what hath been said , that the Matter of the First Element , is not every where moved alike , but more strongly in the Bodies of the Lucid Stars , than without them in the Globuli of the Second Element . For the subtil Matter gather'd together in the Sun or fix'd Stars , hath a greater force , by reason of the Consent of its Parts to all those swift motions , by which it pusheth forwards the Aethereal Matter , or the Heavenly Globuli . But without the Stars , and between the Globuli , its force is diminish'd , and by being divided , is much weaker : So that every one of its Particles are push'd this way and that way , by the Globuli , and thereby are forc'd to comply with their various motions . Hence it is , that the Matter of the First Element , because of the exceeding smalness of its Parts , is forc'd to change its Figure , and to be toss'd with various motions . For as it is tost amongst the Globuli , it hath several motions ; first , it s own proper Motion , by which it continually changeth the figure of its little particles , to be fit to fill up exactly all the Corners it passeth through . Next it hath a Circular motion , which is common to all motions that are moved together . And lastly it hath a Straight motion , whilst by the Circular motion of the Vortex , it is thrust in great abundance towards the Parts that are most remote from the Poles . V. A motion may be various , and yet continue one and the same . And tho' there can be but one Proper motion assign'd to a thing , yet doth not this thwart the Truth of what we have just now said , because tho' this motion hath several names , yet it is still but one and the same , from the Center to the Circumference , by a right Line , tho in its going forth it may undergo several Figures ; even as the motion whereby any Liquor is transmitted through a Channel or Pipe is said to be one , tho' it run to the term to which it is directed , in one place through a square Pipe , in another through a Triangular , in one through a narrower , in another through a wider Pipe. VI The great Globuli are more strongly moved than the less . We are also to take notice of some difference there is between the Globuli of the second Element , because the Bigger , as being more Solid , are more suited to receive a swift motion from the matter of the first Element , than the Less , and therefore they are more swiftly moved , and withdraw further from their Center . VII . The matter of the first Element continually passeth from one Vortex to another . Next , we are to consider that the first Element , is continually carried towards the Center of each Vortex , from other Neighbouring Vortexes about it , by those Parts which are nearest to the Poles , where there is least resistance , that so they may make up again that which is lost : But that the same matter breaks out of its own Vortex into others , by the Ecliptick or those parts which are furthest from the Poles . For let us sppose AB , to be the Poles , about which the Vortex in which we are , Whirls round , H and Q to be the Ecliptick , or Parts most remote from the Poles , where the motion is the Swiftest . Let us also suppose the Vortex to be AYBM , round about which four others Vortexes LCKO rowle , so as to touch O and C , at their Poles , and the other two K and L , in those Parts that are most remote from their Poles ; I say , this supposed we may easily guess , that the matter which strives to withdraw from the Axis AB , of our Vortex , doth with greater Force tend towards the Parts Y and M , than towards A and B. The reason is , because the most subtil matter in Y and M , meets with the the Poles of the Vortexes O and C , where there is no great Force of Resistance ; whereas in A and B , it meets wi●h those parts of the Vortexes K and L , which are most remote from their Poles , and have a greater Force of moving from L and K , towards S , than the Parts about the Poles of the Vortex S , have to tend towards L and K ; and therefore it is manifest , that the most subtil matter which is in K and L , must move on towards the Center of our Vortex S , and that that which is in S , must tend towards the opposit Vortexes C and O. So that as much of this subtil matter , as gets out through Y and M , so much of the same matter enters , from the other Vortexes L and K through the Poles of our Vortex . VIII . But not the Matter of the second Element . But there is no such passage of the matter of the second Element from one Vortex to another ; for being whirld round as well as the subtil matter , it endeavours to preserve its Swiftness , but would certainly lose much of the same , if it should wander out of the limits of its own Vortex , since the motion is so very slow in the Polar Parts of the other Vortexes M and Y , that it cannot meet with any free entrance there . Yea , tho' we should suppose , that the Aethereal Globuli should pass from the Poles of one Vortex , towards the Center of another ; and that all the matter both of the first and second Element , contained in the Vortex L , at the very same moment of time , had begun to move , from the middle place between the Centers S and L , towards S ; yet we shall easily understand , that the said subtil matter will arrive sooner at the Center S , than the Globuli of the second Element . Because the Agitation of the first Element far surpasseth that of the second , and hath always an open passage , through those little Angles , which cannot be fill'd up by the matter of the second Element . To which we may add , that the matter of the first Element , by passing through the narrow spaces left by the Globuli , meets with no impediment , nor loseth any part of its Swiftness , seeing that according to the Laws of motion , it always endeavours to recede from the Center , and hath a force to persevere in its Swiftness . IX . How the matter of the first Element is moved amongst the Stars . Having thus seen how the Matter of the first Element , which is impatient of Rest , breaks forth from one Vortex to another ; we are to enquire how the said matter is moved amongst the Stars . Consider we therefore , that a part of the most subtil matter , in the Space d e f g , where we place the Sun , moves from A , by a right line to d , and there meeting with the Globuli of the second Element , beats them back towards B ; and that contrarily another part of the said matter comes from B to f , and there drives before it the Globuli of the second Element which it meets with , towards A , and that immediately thereupon , as well the matter about d , as about f becomes reflected towards all the parts of the Ecliptick e g , and doth equally drive before it all the adjoyning Globuli of the second Element , and lastly gets away into MY , through the materials that separate those Globuli , about the Ecliptick e g. X. The motion of the matter of the first Element is the cause of the Roundness of the Stars . VVhereupon this Space must needs be Sphaerical , because the matter of the first Element , which is entred into the Body of the Sun by its Poles AB , must equally beat back all the circumjacent Globuli of the second Element , as well those , against which it is only obliquely reflected , as the other against which it pusheth in a direct Line ; after the same manner as we see , that a Glass pipe is formed Round , because the Air driven through the Iron pipe , with an equal force spreads it self round , and equally presseth it on all sides . XI . The motion of the subtil matter amongst the Globuli is various . The matter of the first Element without the Stars , or whilst it wanders between the Globuli of the second Element , hath a various motion . For first it hath a Proper motion , whereby it runs to the filling up of the little Spaces left by the Globuli of the second Element , which the diversity of motion changeth every moment . And it hath also a Circular motion about the Poles , common to the whole Heaven AMBY ; because that which is contained between the little spaces of the Globuli , follows the motion of them . As VVater contained in a Barrel , follows the motion of it , and accommodates its self to its Figure . It hath also a Sraigh motion , from the Poles AB to the Sun ; and liket wise from the Sun to the Ecliptick YM , according to the Law of motion , that things which are circularly moved , always tend to recede in a right Line , from the Center of the Circle they describe . XII . The matter of the first Element hath a greater force in the Stars than without them . VVhence it appears that the matter of the first Element , collected in the Center of the Sun and fixt Stars hath a very great Force , because the motion of all its particles do readily agree and conspire together , to push forward the Globuli with an equal Force : But this Force grows weaker out of the Body of the Stars , because it spends the greatest part of its Agitation , in changing the Figures of its little Particles , to the end it may exactly fill all the little Corners through which it passeth . XIII . Of the Figure of the Strait or Screw-like Particles . VVherefore whilst the matter of the first Element , passeth through the Triangular intervals 1 and 2 of the Globuli touching one another , it must needs assume a Triangular Figure , and become shaped into striate Particles 3 and 4 bent a contrary way . It is not easy to determin the length of those Particles , because this depends on the slenderness or abundance of the matter , whereof they are made : But it is sufficient to conceive them like little Columns , with three Notches round them like a Screw ; so that in their whirling round , they may pass through those narrow passages 1 and 2 of a Triangular Form. For seeing that they are longish , and with a most swift motion pass between the Globuli of the second Element , which touch one another , whilst the Globuli in the mean time by a different motion are whirld round , about the Poles of the Heavens , we clearly understand , that their Notches must go winding about , like those of Screws , which winding must be more or less according as they pass through parts that are more remote from the Axis of the Vortex , or nearer to it , because they move more swiftly in those , than in these . XIV . The Globuli of the second Element , have not the same bigness every where . As to the Globuli of the second Element , of which the Vortexes consist , they are not all of the same bigness ; for those that are nearer to the Star and its Center , are less than those that are farther off , and consequently absolve their Circle in a less time . VVhich inequality of their Magnitude , extends it self to the Region of Saturn HNQR , where the parts of Heaven move most slowly . Yet beyond that Orb it is probable , that the Globuli are all of an equal Magnitude , and that the Higher move more swiftly than the Lower . So as that the Higher must move more swiftly towards M and Y , than the Lower towards H and Q. The reason whereof is amongst other things , that the bordering Vortices being unequal , the motion of the subtil matter , between those unevennesses of the surface , becomes much accelerated . CHAP. XIII . Of the Heavenly Sphere and its Circles . I. What the Sphere is . BY the word Sphere we understand that common instrument of a round Figure , consisting of several Circles , invented to explain and represent the Heavenly motions , and the Fabrick of the whole VVorld . This Sphere hath a little Ball in the midst or Center of it , with an Axis through it , the Extremities whereof are called Poles , about which the whole Body of the Heavens is supposed to ●urn round in the Space of 24 hours . II. What an Axis is . The Axis of the World is a right Line , which extending from one Pole to the other , passeth through the Center of the World. By this the Earth is said to be supported : Not that there is indeed any such visible Axis in the Globe of the Earth , which is terminated in the Heavens , and whereby the Earth is sustained ; but only that such a Line is understood , which passing through the Center of the Heaven and Earth , reacheth to the utmost Heaven , and ends at two points , which are called the Poles of the World. III. What the Poles are . The Poles therefore are nothing else but the Extremities of the Axis , or two Points in the highest Heaven , Diametrically opposit , about which the whole bulk of the Heavens is conceived to be whirld about . The one of these Poles is always visible to us , and from its nearness to the constellation of the Bear is called Artick , the other which is always hid from us , being from its opposition to the former called Antarctick . The Northern Pole is reard in sight on High , The other hid under our Feet doth lie . IV. The Circles of the Sphere are eith r greater or less . There are ten Circles in an Artificial Sphere , six whereof are called Greater , whose Diameter passeth through the Center of the World , or which divide the Sphere into two equal Parts , and these are the Horizon and Meridian ( between which standing immoveable , the other Circles are turnd round ) the Aequator , the Colure of the Solstices , the Colure of the Aequinoxes , the Zodiack or broad Circle , and the middle line thereof , which is called the Ecliptick . The four lesser Circles are those whose Diameter doth not pass through the Center of the World , or which divide the Sphere into two unequal Parts . They are the Tropick of Cancer , the Tropick of Capricorn , the Arctick and Antarctick Circle , which also with the Aequator are called Parallels , as being at an equal distance from each other . V. The Equinoctial Circle . The Aequator or Aequinoctial Circle , which is the chiefest of all the rest , is that Circle , which in all its parts is equally distant from the Poles of the World , which it divides into the Northern and Southern Hemisphere . By the Greeks it is called the Even-day Circle , because the Sun twice in a year , that is about the 10 of March , and the 13 of September intersecting the same , makes two Aequinoxes , by rendring the Days and Nights equal , through his equal stay above and under the Horizon , because the Aequotor intersected by the Horizon , becomes divided into two equal parts , one Superior , and the other Inferior . VI. The Zodiack . The Zodiack is a greater Circle superinduced over the other moveable Circles , unequally distant from the Poles , and intersecting the Aequinoctial at two opposit Points ; so that its middle line which is called the Ecliptick , hath one part of it inclining to the North Twenty three degrees , and Twenty eight minutes , according to the Antients , and the other part of it as many degrees reaching towards the South . This Circle is conceived Broad , because the Planets which move through it , do not all of them keep the same tract , but whilst the Sun takes it Course through the midst of this they Circle , along the Ecliptick they swerve to the North and South . The Points at which the Zodiack Intersects the Aequator , are called the Aequinoctial Points : because when the Sun reacheth them , it makes Day and Night of equal length . And the Points by which the Ecliptick , declines furthest from the Aequinoctial , are called the Solstitial Points , because when the Sun comes to them he seems to stand still . The Zodiack is furnisht with twelve Signs or Constellations of which hereafter . VII . The Colures of the Solstices and Equinoxes . The Colures are two greater Circles , which intersecting one another in right Angles at the Poles , do intersect all the other moveable Circles , dividing them into four equal Parts . For the Colure of the Solstices passeth through the Poles and the Solstitial Points of Cancer and Capricorn ; but the Colure of the Aequinoxes is described through the Poles of the World , and the Aequinoctial Points of the Zodiack , at Aries and Libra . The use of the Colure is to mark out the four Cardinal Points , viz. the beginning of Aries , where whilst the Sun is , the Night is equal with the Day , and the Spring begins ; the beginning of Cancer , where the Sun makes the longest Day , and begins Summer ; the beginning of Libra , where the Sun makes Day and Night equal , and begins Autumn ; and the beginning of Capricorn , where the Sun makes the shortest day , and Winter begins . By Crab and Capricorn Solstice is made , The Ram and Ballance equal Light with Shade . VIII . The Horizon . The Horizon is the utmost Circle in a Sphere , encompassing all the rest , and is that Circle which is equidistant from the Vertical Point of every place ; and therefore is called by the Greek Horizon , that is to say , Terminator or Finisher , because it boundeth our sight . For when standing in a Plain we take a Prospect round about , we see the Heavens every where , as it were touching the Earth ; from which Commissure of the Heaven and Earth as the Stars get upwards , they are said to Rise , and when they sink beneath it are said to go down . Tho' the Horizon with regard to every particular place of the Earth be immoveable , yet considered in general it is mutable , forasmuch as whilst we Travel from one place to another , we also pass from one Horizon to another . IX . The Meridian . The Meridian is a greater Circle which passeth through the Poles , and the two Points , the one directly over our heads , called the Vertical Point , and the other opposit to it , under our Feet called the Nadir . This immoveable Circle , within which the other Circles are moved , is called the Meridian , because when ever the Sun reacheth it , he makes Noon or Midday , by dividing the Day into two equal Parts . Whence it appears , that the Altitude or Elevation of the Pole in every Country , is nothing else but that Arc of the Meridian , which is intercepted betwixt the Horizon and the elevated Pole , and whose complement to the Zenith or Quadrant of the Circle , is always equal to the Altitude of the Aequator . X. The Tropicks of Cancer and Capricorn . The Tropick of Cancer is a less Circle , Parallel to the Equator , passing through the Northen Solstitial Point of the Zodiack . The Tropick of Capricorn , is a less Circle , Parallel to the Aequator , passing through the Southern Solstitial Point of the Zodiack . They are called Tropicks , that is to say Turn-agains , for that as soon as the Sun in his withdrawing from the Aequator reacheth them , he begins to return again towards it . Their distance from the Aequator is 23 Degrees and an half ; that being the furthest Elongation the Sun ever makes from that Line ; wherefore , also it is called the greatest Declination of the Sun. XI . The Artick and Antarctik Circles . The Artick or Northern Polar Circle , is a less Circle , Parallel to the Aequator , passing through the Pole of the Zodiack , near the Northern Pole. The Antarctick or Southern is a Circle passing through the other Pole of the Zodiack , near to the Southern Pole. These two Circles are at the same distance from the Poles , as the Tropicks from the Aequator , that is 23 Degrees and an half . They have also this common use with the Tropicks , that they serve to distinguish the Zones , the Torrid being comprehended within the Tropicks ; and the Frigid within the Polar Circles ; but the Temperate Zones lie between the Polar Circles and the Tropicks . XII . Whence the Latiude of a Place is taken . All these Circles , the Aequator , Ecliptick , Meridian , with the Tropicks and Polar Circles , are applied to the Terrestrial Globe : For the Earth also hath its Equator , commonly called the Line , corresponding to the Caelestial Aequator ; and every place on the Earth hath its own Meridian . And these Circles are exceeding useful to distinguish the various Situation of Places , as well as to the Art of Navigation , and to the Knowledge of Geography . For since we may distinguish the Earth as well as the Heaven , in Length and Breadth ; the Latitude of any Place is nothing else , but a Portion of the Meridian , intercepted between the Aequator and that Place . Wherefore , those who live under the Aequinoctial have no Latitude ; whereas they have the greatest Latitude , who are at the greatest distance from the Aequator under the Poles . The Latitude of a Place , is the same with the Elevation of the Pole , for they who live under the Line , see both the Poles in their Horizon , but as we withdraw from the Aequator , one of the Poles is Elevated above our Horizon , and the other deprest beneath it . XIII Whence the Longitude is taken . But the Longitude of a Place is taken in the Aequator , and is nothing else but a Part of the Aequinoctial Circle intercepted between the Meridian of any particular place ( suppose Paris ) and the first Meridian appointed by the consent of Men , which Meridian is conceived to pass through the Islands , of Azores . XIV . What a Right Sphere is . A Sphere is either Right or Oblique . A Right Sphere is that whose Horizon passing through the Poles of the World , cuts the Aequinoctial at Right or Equal Angles . XV. What an Oblique Sphere . An Oblique Sphere , is that whose Horizon cuts the Aequator at unequal Angles , and doth not pass through the Poles of the World. Book . 1. Part. 5. Chap. 14 〈◊〉 Freman 〈◊〉 I. Kip Sculp To the Right Honourable Sr. Henry Goodrick of Ribston Park in York-Shire Kt. and Baronet , Leivtenant Generall of their Majesties Ordenance , and one of the Lords of their most Honourable Privy Councell &c. a. This Plate is humbly Dedicated by Richard Blome . CHAP. XIV . Of the SVN . I. How the Sun was formed at first . FRom what hath been already said of the Action of the Heavenly Matter , we may easily understand how the Sun was formed at first . For whilst the Globuli of the Second Element , being more solid than the Matter of the First , withdrew from the Center , betaking themselves to the Circumference , the most subtil Matter being increased to too great a quantity ( from the continual rubbing of Bodies against one another ) to be contained in their Intervals , rush towards the middle part , where being tost with different motions , and most swiftly whirl'd about its Center , it constituted the Sun , and the other fix'd Stars . For seeing that our World , in the midst whereof the Sun's Seat is , and which extends it self beyond the Sphere of Saturn , doth constitute one great Vortex , whose fluid and transparent Matter is circularly moved ; it must follow that the Globuli of the Second Element will strive to recede from their common Center , and as far as their Figure and Motion will permit , come nearer together , and lye upon one another ; which they cannot do , without driving the Matter of the First Element , whereof there is greater store than is needful , to fill their Intervals , towards that place which they have left ; so that it cannot be , but that about the Middle of the Vortex , there must be a great concourse of the Matter of the First Element ; which we take to constitute the Body of the Sun. II. What the Sun is . Accordingly we may define the Sun to be a Lucid Body , consisting of the Matter of the First Element , gather'd together in the Center of a Vortex , in the room of the Globuli that recede from it . III. Why the Sun is Round . From the Account we have here given of the Sun's Formation , we gather first , that the Sun must be of a Round Figure ; because the most subtil Matter entring the Sun at either of its Poles , continues its course in a Right line , until it meet with the Globuli of the Second Element , which are about the opposite Pole , and running against them , drives them forward by the force of its motion , and thereupon is immediately reflected , and turns round in all its parts towards the Ecliptick , and so drives forwards the adjacent parts of the Second Element , that are next to the Center of the Star , and by this means makes the Sun to be Round : So that if it should be intersected by a Plain , parallel to the Ecliptick , in whatsoever part the Section be made it will always be a Circle . For otherwise it would follow , that some parts of the Second Element , do not recede so far as they can from the Center of the Circle they describe ; but this is impossible , considering the Fluidity of the Heavens . IV. Why the Sun is Lucid. In the Second place , we infer from hence that the Sun is Lucid ; because the Matter of the First Element , gather'd together in the Center of the Vortex , by pressing every way upon the Heavenly Globuli , ( besides the motion they have , as they are a Liquid Body ) do communicate to them such a force or impression as is sufficient so to affect our Eyes , as to produce the sense of Seeing . V. How it comes to pass , that the Sun appears so much greater to us than any of the fix'd Star. The Sun therefore , and the rest of the fix'd Stars , shine with their own Light , which their brisk and lively Rays are an evident Proof of . And the reason why the Sun appears so great to us , in comparison of the fix'd Stars , is , because he is nearer to us , who are in the same Vortex . For which reason also , the Sun doth not only abundantly illuminate our Earth , whence he is called in Scripture , the Greater Light ; but also communicates heat and warmth to the same : Whereas the fix'd Stars , tho' visible to us ; because of their Remoteness can do neither . VI. The Sun is a Fluid Body . The Sun therefore is no solid Body , neither a burning Stone , nor Ret-hot Plate , as some of the Ancients apprehended , but consisting of a very fluid and movable Matter , which whirls all the Circumjacent parts of Heaven round with it . And thus much is not only confirm'd to us by Reason , but also by Astronomical Observations : For SIMON MARIUS , in Scheinerus his Rosa Ursina , tells us , That he had beheld the Sun thro' an Optick Glass , boyling like molten Gold in a Furnace . ATHANASIUS KIRCHERUS , in his Book entituled , Ars magna Lucis & Umbrae , writes , That he had seen the Sun , like to the Sea , tost and foaming with Waves . And RAPHAEL AVERSA assures us , That he had observ'd the Sun to be a Fluid Body , contain'd in its place , as if it were in a Vessel , and agitated within it self , like a molten Metal . Yea , there are several who have assured me , that the whole Body of the Sun boyls continually , and that they had often observ'd it through a Prospective-Glass , boyling like Water in a Kettle . VII . The Sun is a true Fire . Whence all Modern Philosophers that are of any Note , take it for granted , that the Sun is nothing else but a Fire or Flame . Since we have great reason to conclude that Body , which gives forth Warmth and Light , to be Fire ; but we Experience the Sun to give forth Heat and Light : Therefore we must conclude the Sun to be a Fire . The Minor is manifest , because we are convinced that both these proceed from the Sun by our Feeling and Sight ; neither do we find any thing in the Fire , which we may not with equal right attribute to the Sun. Besides , we cannot conceive any Body to have an inborn or connatural Light , by means of which it produceth Heat , except it be of the nature of Fire . Wherefore , seeing the Sun is as communicative of Light and Warmth , as Fire is , and that both of them have the same Properties ; for the Sun dries , melts , kindles , and burns , as well as Fire : Therefore we must conclude that the Sun is Fire . For we can have no stronger Argument to prove two things to be the same , than by demonstrating , that all the Effects of one of them , do also proceed from the other . For as if any one by Night should meet with a Body that sent forth flames , heated the Bodies that were near it , and enlightned the Air , he would make no scruple to conclude it to be a Fiery Body : In like manner , seeing the Sun performs all these things , we are not to question but that it is a Fire or Flame . VIII . Why the Sun's heat is greater in Summer than in Win●er . But against this you will object , First , if the Sun were a Flame , and as such continually diffus'd its heat through the whole World ; it would follow from hence , that the Air would never be cold ; but this is contrary to Experience : For we fin● the Air much hotter in Summer ; than in Winter . Some endeavour to solve this Objection , by saying , that the Difference of Heat we feel at divers Seasons , proceeds from the various incidence of the Sun-beams on the Surface of the Earth , which in Summer come down to the Earth more directly , and in Winter more obliquely or slantingly . But this Answer will scarcely satisfie those , who consider that the Surface of the Earth is not polish'd , as a Looking-Glass ▪ but rough and very uneven ; and that consequently it may receive direct Rays in Winter , as well as Summer . The reason therefore why the Cold is more intense about the Earth in the Winter-season , is , because the Air we breath in , which is ten or twelve Miles high , hath a very smooth and even Surface , as having no Winds to ruffle it ; and the Sun-Rays falling very slantingly in the Winter upon this smooth Surface , is the reason why fewer Rays are transmitted to us in Winter , than in other Seasons of the Year . To which may be added , that more Vapours and Exhalations at that time proceed from the Earth and Sea , which filling the Air , do allay the Heat of the Sun. IX . The Sun is fed and maintain'd as our Fires are . In the Second place , you 'l object , That our Fire here below stands in need of Fewel , which is no sooner taken away , but it becomes extinct , and vanisheth : But in the Heaven there is no Fewel to feed the Sun's Flame : Therfore it is a great mistake to suppose it a Fire . X. The Sun's Flame is not weakned by the Bodies that are about it . I Answer in the first place , That the state of the Sun , and our Flames here below , is very different : For our Flames stand in need of Nourishment , because they are compos'd of a Fluid and Moveable Matter , which is easily destroy'd by the Bodies that surround it ; and therefore it is needful it should be furnish'd with New Matter , to supply that which is extinguish'd and vanisheth . But above the Sun there are no such Agents as are able to dissipate its Matter , and there-therefore it needs no Fewel to preserve it . For so vast a quantity of Fiery Matter is heap'd up in the Sun , that it can neither be exhausted or extinguish'd by it self , nor by the Heaven that surrounds it . XI . The Sun is fed and maintain'd by the Matter of the First Element . I answer in the Second place , That the Matter of the First Element is the Fewel of the Sun's Flame , which is continually convey'd to the Sun , in the room of the like Matter , it loseth at any time . For the Stars entertain such a Communication among themselves , as to convey food to one another through their Vortexes , bestowing upon others what goes out by their Ecliptick , and receiving from others what comes in by their Poles . And thus New Matter continually enters into the Sun , by the Poles , and other Matter again flows out from it , in that part which is farthest from the Poles . And accordingly the Sun is always said to be the same , in like manner as a River is supposed the same , notwithstanding that New Matter continually makes up the defect of that which runs away . XII . How the Sun makes Twilight . The Sun is not only the Cause of the Light , which in the day time is diffused through the Air ; but also of the Twilight , which is perceived in the East before its Rising , and in the West after its Setting ; forasmuch as the Rays of the Sun falling obliquely upon the Vapours that are in the Air , are refracted towards the Earth . The Beginning of this Twilight happens , when the Sun is deprest beneath our Horizon , about 18 Degrees , perpendicularly taken from the Vertical Circle . Hence it is , that in those parts of the Earth where the Sun doth not in Summer sink below the Horizon 18 Degrees , there they have a continual Twilight all Night long . XIII . There are no certain Points of the Sun 's Rising and Setting . Whatsoever part of the Earth the Sun salutes with his Rays , there he is said to Rise ; and to Set in those Parts which he ceaseth to illuminate . Now forasmuch as there is no part of the Earth in which he may not sometimes Rise , and sometimes Set in this manner , we may assert , contrary to the Vulgar receiv'd Opinion , that there are no certain Points of the Sun 's Rising or Setting . CHAP. XV. Of Light. I. The Opinion of the Peripateticks , concerning Light , refuted . THe Peripateticks generally are of Opinion , that Light is a Quality really distinct from Substance ; and propagated to the Senses they don't know how . But this Opinion , at present , hath but few Followers : First , Because it is evident , that Qualities are no Emities really distinct from Substances , but only their Modifications , which neither can remove from the Substances wherein they are , nor do any thing without them . Secondly , Because the Beams of Light are reflected from some Bodies : Now every Reflexion is caus'd by Resistance , and whatsoever meets with Resistance , must be Corporeal ; but forasmuch as meer Qualities , abstracted from Substances , include nothing of Corporeity , neither can they be liable to Resistance . Whence we must conclude , that Light which is Reflected , is no pure Quality , separately existing from the Lucid Body . Thirdly , The Rays of Light are refracted , and by the help of Convex-Glasses are strengthned ; which could not be in case the Light were a meer Quality , for then , as being destitute of all Quantity , it would equally penetrate all Bodies . For the better understanding whereof , two things especially are to be supposed . II. Two things are to be supposed , in order to the understanding of the Nature of Light. First , That all Bodies consider'd in themselves , strive to move in Right lines . For a Stone thrown from you always moves strait forwards towards some part or other ; nor ever turns aside , except by other Bodies meeting with it , it be forced to rebound or deflect . Secondly , That whatsoever is Circularly moved , as far as it is able , strives to recede from the Center of its motion ; as we may experience in a Leaden Bullet tied to a String , for wee feel that the swifter the Bullet is whirl'd about , the stiffer the String is extended and stretch'd ; which cannot be attributed to any other Force , but because it strives to recede from the Center of its motion . III. What is to be understood by the word Striving . When I say , that the Bullet strives to withdraw from the Center of its motion , it is not so to be understood , as if the Bullet or any other Body had a perceptive inclination to move one way rather than another ; but only that it hath such an impulse to motion , that it would move in such a manner , in case it were not hindred of something else . IV. How Light is produced . We assert therefore , that Light consists only in this , that the Matter , which is in the Center of every Vortex , by its swift whirling about , doth shake the Luminous Matter , that is dispers'd throughout the whole Heaven , and all Diaphanous Bodies , which in Right lines beating against the Nervous Fibres of the Tunica Retina , produceth that perception , whence Bodies are denominated Lucid : For as a Blind man by the means of his Staff , because of its Resistance only , is able to distinguish betwixt Bodies ; tho' no Species be transmitted by the Stick to the Eye : So likewise the Cause of the Perception of Light is nothing else , but that a certain Matter dashing against the Organs of Sight , stirs up the Soul to such an Animadversion . V. What Light , and the Rays of Light are . Light therefore is a Quality proceeding from the Vibration of the Globuli diffus'd in Right lines , and moving the small fibres of the Optick Nerve , disperst through the Net-like Membran of the Eye . Which is then chiefly , when the Matter of the First Element , contained in the Center of the Sun , or any other Lucid Body , strives to withdraw from it : For in so doing it presseth the adjacent Globuli of the Second Element , and they again those which are above them to the very last . So as that by this means the Light is diffused in a moment , to any distance whatsoever . Which will not be hard for us to conceive , if we consider that the Action of Light doth not so much consist in Motion , as in Pression , or a first disposition to Motion ; and therefore that the Rays of Light are nothing else but so many Lines , by which that quick and lively Action is performed . VI. The Sun equally ●iffuseth its Light. From whence we conclude , that the Sun doth not more forceably drive forwards the Matter which is towards the Ecliptick , than that which is towards its Poles : For the Sun being of a Round figure , the Matter of the First Element entring into its Center , doth equally drive from it all the Globuli that surround it ; so that no greater Force proceeds from one , than from any other Point of its Superficies , by which means infinite Rays are extended to every part of the Body it illuminates . VII . What is required to the Production of Light. To the Production therefore of Light , is required , First , Matter very swiftly agitated , as is that which is in the Center of every Vortex . Secondly , A certain Matter that is shaken , as is that Matter which is about the Stars , that is , the Globuli . Thirdly , It is requisite that this Matter be shaken or vibrated in Right lines , or such as are equipollent to Right ones : For tho' in all Diaphanous Bodies , the Pores are not Mathematically strait ; yet are they sufficiently so , for the transmission of the Action of Light. Fourthly , That this Vibration of the Matter be such , that by Moving the Nerves the Soul may be excited to that perception we call Sense ; for it is our Soul , and not the Body that is sensible . When therefore either the Organ is unfit to receive this Vibration , or that it be affected by any stronger Vibration , the Sensation will be thereby hindred . And this is the reason , why after the Sun is risen we cannot see the Stars ; because the stronger Vibration of the Sun , renders the weaker Vibration of the Stars imperceptible , except it be in case of some very great Eclipse . VIII . The farther the Beams of Light withdraw from the Luminous Body , the less and weaker they grow . Tho' the Light diffuse it self on every side , and equally drive before it the adjacent Matter ; yet is its Action lessen'd according to the Degrees of its elongation from the Luminous Body . The better to comprehend this suppose we the Tube ABC here decypher'd , enlarging it self by degrees to contain Water as high as DE ; and let afterwards , by means of a Spring , so much new Water be spouted into it by the Hole A , as may be sufficient to fill the Space AFG , which tho' it be of some height , yet it hath but little breadth ; it will hence appear , that by the accession of this New Water , the Water contained in the Tube will be sensibly raised a little higher towards HI , but not toward DE. By which Example , the Nature of Light is fitly illustrated : For as , we cannot say , that the Water above DE is not raised higher at all , but only that it is raised very little ; so in like manner we must say , that the farther the Beams of Light recede from the Luminous Body , the weaker and less their motion is . IX . How tho Light must be reflected upon its meeting with some Bodies . As a Body that is in motion upon meeting with another Body that resists it , doth lose its determination , and is forced to turn aside ; as we experience in a Ball , which being struck against a Wall , rebounds ; so we are to conceive , that the Light meeting with some hard Body , is by it reverberated . For seeing that Light is nothing else but a pression of the Globuli of the Second Element , which tho' in the Pores of Water , Air , Glass , and other such like Bodies , do touch one another in various ranks or rows : Suppose the Globuli that constitute the Row CD , to represent those Parts of the Second Element that constitute one Ray , falling upon the hard Body AB ; it is necessary that the Action of this Ray , be continued by the Line DE , towards E , that so the Angle of Reflexion BDE , may be equal to the Angle of Incidence ADC ; that is , this Action must be transmitted by the very same Lines , which the Globulus C would describe , in case it were alone , and were moved by the Line CD : For it is manifest , that the Globulus D is disposed to move onwards that way it would really move , if its Power were reduced to act . And because this Globulus , by meeting with the Body AB , would neither tend towards G nor H , but only towards F , it is evident that the Globulus F only is push'd forwards by it , and that that alone receives its Action . This is confirm'd by daily Experience , for we find that the Sun-beams falling upon the Surface of any Compact Body ( as Gold , or Steel ) are reverberated , and that the Lights Angle of Reflexion , is equal to the Angle of Incidence . X. Light cannot be Fire . I know no Body that hath better explained the nature of Light than our Author : And tho' they who mantain Light to be Fire , do support their Opinion by strong Arguments , yet they struggle with many difficulties , which are of no force against our Opinion . For according to their Hypothesis two Bodies would be in one place , if Light and Fire were one and the same thing . Again there are many things that give Light without imparting Heat . Moreover , what shall we say becomes of the Light , when the Sun leaves our Hemisphere ? shall we suppose that such a vast Body can perish in a moment ? And lastly , how can the Light without interruption or disturbance reach our Eyes , when the Air is shaken by Winds , seeing one Body always resists another ? And other such like difficulties that may be urged against the Light 's being Fire . IX . No inconveniences follow upon supposing Light to be Motion . But by constituting the nature of Light , in the Pression of the Subtil matter , we are delivered from the Danger of Penetration of Dimensions : neither are we necessitated to admit that Light , is always in conjunction with Heat ; forasmuch as the matter of the first Element , can withdraw from the Center of the Lucid Body , and push forwards the Globuli of the second , which compass it about without producing the effect of Heat , as appears in Glow-worms and Rotten-wood . Neither are we pinched by that Question which demands , what becomes of the Light when the Sun withdraws from our Hemisphere , seeing we maintain the Light to be no more than motion , which cannot but cease as soon as the cause vanisheth . Neither needs the objection of the Air tost with Winds to trouble us , forasmuch as the Intervals , which we conceive to be between the Parts of Bodies , are fill'd with the Subtil matter , and are always open for the Globuli of the second Element , so that nothing hinders the Light from coming to us in a Right Line . XII . How Light is transferred in a Moment . There is one difficulty only which seems somewhat to affect us , viz. how the Light of the Sun , and fixt Stars can reach our Eyes in a moment ; yet even this also will be removed , if we consider , that the nature of Light doth not consist in the Duration of Motion , but that it is only a Subitaneous Action , directed to our Eyes , through the Pores of the Air and other Diaphanous Bodies ; much after the same manner , as we by night with a Stick can discern and distinguish between Water , Clay , Stones and such like : For we then experience that the same Action , wherewith the end of the Stick toucheth the Body , is at the same instant felt at the Head of the Stick : And which would be the same were the Stick never so long , as might be demonstrated by many Examples . XIII . An objection Answered . If it be objected , that the matter of the second Element being Fluid , a Range of its little Pellets reaching from the Sun to our Eyes , cannot have the same effect in pushing fowards in a right Line as a Stick would and must have ; for the more round and slippery these Pellets are , the more apt they are to slide away , and by this means to make the impulsion of no effect . To this I answer , that tho' the matter of the second Element be the most Fluid of all matters , yet this doth not hinder but that a Rank of them , reaching from the Sun to our Eyes , may be as effectual in pushing , as an inflexible stiff Line : For the World being every where full , every Ray of Light , hath always many others about it , which hinder it from sliding away , and consequently transmits the Action of the Lucid Body , in the self same manner as if it were a stiff Stick . XIV . In the Transmission o● Light there is no Translation of a Body . You 'l say , that no Motion can be made in an instant . We grant it , for in that Motion wherein the Action of Light consists , no Body is transmitted , but the Motion only is transferred from one Body to another . For the Sun , who is the Principle and Fountain of Light is not transmitted to our Eyes , but its motion only is continued to our Eyes , by means of the Subtil matter , which fills the Pores of the Air , and other Pellucid Bodies . Nor is it any contradiction that a motion should be transmitted in an instant , tho' no motion can be made in an instant . XV. How the solar Light might appear though there were no Sun. From what hath been said , it may be clearly understood , how that Action , wherein we conceive the nature of Light to consist , spreads and diffuseth it self every where from the Body of the Sun and fixt Stars , and how in the least moment of time it extends it self to the farthest distance ; and to Right Lines , not only from the Center of the Lucid Body , but as well from any other Points of its Surface : Whence all other Properties of Light may be deduced . And I may add further , which will seem to some a great Paradox , that all these things would happen in the Heavenly matter , tho' there were no force at all in the Sun or any other Star , about which it was whirld : So that if the Body of the Sun , were nothing else but an empty Space , yet should we perceive his Light as well as now we do , ( tho' it would not be so strong ) at least in that Circle wherein the Heavenly matter is moved . XVI . How Des Cartes is to be understood , when he saith that Light is only a Propension to motion . Some , it may be , will object that Des Cartes makes Light to be nothing else , but an Aptitude to motion ; as when he saith Dioptric . Cap. 1. that Light is nothing else , but the Action of the Coelestial matter , or a Propension to motion . Now if it be only a Propension to motion , it is no motion , and therefore the Light , which he saith , is received in the most Subtil matter , that fills the Pores of other Bodies , will never be produc'd , as long as it hath only a Propension to push forwards the same . Whence we must conclude , that if Light be an Action , and that such an one , as tends to the production of motion , Light must be before motion ; for every cause is before its effect , and therefore Light cannot be motion . XVII . The distinction of Lux and Lumen , or Light in its Fountain , and Light in the Mea●um . This difficulty will be easily cleared , by distinguishing betwixt Light in its Fountain or Principle , such as are Lucid Bodies ; and Light in a Medium , that is , any Transparent Bodies . The Propension to motion , or pression which is in the Lucid Body , as the Fountain , is properly called Lux : But when considered in its progress , that is , in the Heaven , or the matter of the second Element , then it is called Lumen , tho' Authors commonly confound both these words , using them promiscuously ; Lux therefore , or Light in its Fountain , is a Propension to motion ; or is that Action in Lucid Bodies , which tends to produce some motion in Transparent ▪ Bodies , which is Lumen or Light in a Medium . Neither doth it imply any absurdity to say , that Light in the Fountain , preceeds Light in the Medium , since every cause is before its effect . The motion therefore which is in Lucid Bodies , produceth another motion , that is , Light in the Air , and other Pellucid Bodies . XVIII . The Sun i● not before the Light. It may be you 'l urge , that if Light be that Action or Motion , whereby the Sun or any other Lucid Body pusheth forwards the Subtil matter , which is in Transparent Bodies , then the Sun must be conceived to be before that Action , and by consequent would be destitute of all Light ; every cause being before its ectect . X. The Answer But I answer , that this doth not follow , because the Light it self , or that motion , whereby the Sun doth circularly push fowards the Subtil matter whereof it is composed , is natural to it , and therefore it is not necessary , that as an Efficient cause it should be before it . Forasmuch therefore as the Sun is composed of the most Fluid matter , which is wholly whirld about its Center , it is necessary according to the Rules of motion , that it press the matter of which the Heaven is made , that is , the Subtil matter , which from the Stars , reacheth to our Eyes ; in which Action , the nature of Light consists . CHAP. XVI . How Spots come to be Generated about the Sun , and fixt Stars , and how they vanish again . I. What the Spots of the Sun are and who was the first discov●rer of them . BY the Spots of the Sun , we understand those close or compact Bodies , consisting of gross and slow Particles , mixt with others that are more Thin and Subtil , which since they cannot comply with the motion of a more Sbtil matter , are cast out from it ; and by reason of their slower motion , clinging together about the Surface of the Sun , continue there for some time , and follow the Suns motion , according to the course of the Ecliptick , till by the Suns force they be dissolved , or suckt in again by it , or wholly expell'd from it . The first Observer and Discoverer of these Spots was GALILAEUS , in the year 1610 , when he was Mathematick Professor in the University of Padua ; and asserted them to be contiguous to the Body of the Sun , and that they moved round it , or rather were whirld about by the Solar Globe in the Space of 26 or 27 Days . II. The Colour and Figure of the Solar Spots . The Spots of the Sun appear for the most part of a Black-colour , and are commonly surrounded with a Darkish cloud , which in the inside is more Bright than it appears on the outside . They vary their Figures ; as appears by that Spot which was first discovered by the Famous CASSINUS in 1672 , and which appeared 36 or 37 Days . These Spots are moved more slowly from the Eastern part of the Sun , to the West , and pass from one brim to the other in about 13 Days time . Their motion is found to be more swift near the Center ; and they seem to make as great way in that part in 4. Days , as they do in 9 or 10 Days when they are near the Circumference . They appear likewise bigger in the Center , but near the Circumference long and narrow . From this their swifter motion near the Center , it is concluded either that they cling to the Sun , or at least are very near to him . III. How these Spots are formed . Now as to the manner of their Formation we are to note , that the Particles of the first Element are not all of them of the same Bigness and Figure ; and tho' we conceive them to be very Little , yet withal we must conclude some of them to be cornerd , and not so fit for motion , if we consider the Spaces or Intervals of the Globuli through which they pass : For these Spaces being mostly Triangular , they by passing through them get the same Figure , not much unlike the form of a Screw , as hath been before observed : By which means it is , that they cannot move so swiftly as before , but do as it were rest or lye still , with respect to others that are more swiftly moved , and so more easily cling together . For tho' they retain the name of the first Element , as long as they continue between the Globuli of the second Element , because then being yet in their swift course , they only fill up the Spaces that are betwixt the Globuli , without composing any grosser Bodies : Yet they obtain the name of the third Element , when they come near to the Body of the Sun , especially the more gross and slowly moved Particles ; for seeing they cannot comply with the motion of the rest of the subtil Matter of the first Element , they are cast out from it , and by running together into great Lumps or masses , they obscure and at last wholly hide the Star , from whence they came forth ; for by clinging to its Surface , they darken and obstruct the Light proceeding from it , and hinder it from pushing forwards the subtil Matter in right Lines , wherein the force of Light doth consist . IV. Spots are of two sorts Some Spots are more Solid , and very compact , as are those which run round the Sun ; others are more thin , and therefore dissipable , such as are those which sometimes appear about the Sun , and then vanish again . V. Spots like a kind of Scum , stick to the Star whence they proceed . For as we see that Water or Oil boyling in a pot , doth cast off those Particles that are less fit for motion , and raise them up to the Surface , reducing them into Scum : So the Sun , whose matter is agitated with a fervent Heat , doth cast off from it , those grosser and many corner'd Particles , which cannot accommodate themselves to the motions of others , and these afterwards running together , constitute a kind of Scum , and so obstruct the Light. Which then more especially happens , when the Sun darts his Rays more forceably against them , for by this means , they are driven more closely together , and become more compact . VI. The Sun appears som●times more dim and obscure because of the interposition of his Spots . By this means it may happen , that a Spot which at first is Soft and very thin , may at last grow to that hardness , as to stop the passage of the Suns Rays . Thus Historians assure us , that the Sun hath been seen for many days together of a Pale colour , not much exceeding the weak and dim Light of the Moon . Neither , in my Judgment , is there any other reason assignable , why some Stars appear now greater , and at other times less , but because their Aspect is varied , according to the diversity of Spots that surround them : Yea , they may sometimes become so totally cover'd by them , that for many years they may be hid from us . So formerly the Constellation of the Pleiades consisted of 7 Stars , whereas now 6 only can be seen . VII . How a new Star may suddenly appear . And on the contrary it sometimes happens , that a Star not seen before , all on a sudden appears to the World : Which is when the Vortex wherein the Spot is , by pressing the Neighbouring Vortexes more strongly , than they press it , doth enlarge its Bounds ; by which means the Matter of the first Element , rushing in more abundantly , to the obscured Star , diffuseth it self over the Surface of the Spot ; as Water is seen sometimes to over-flow the Ice : and then the Star Shines forth as Bright as if it had no Spot at all to darken it . According to this Hypothesis , we may understand how the New Star came to appear in Cassiopeia in the year 1572 , which continued for 2 years , but appeared greatest at first , and afterwards being darkned by Degrees , at last wholly vanished . VIII . How these Spots are sometimes turned into Torches . It also happens sometimes , that the solar Matter flowing about the Spots wherewith it is coverd , doth rise above or beyond them , which Matter being thus pent up between them , and the Surface of the Neighbouring Heaven , is made to move more swiftly ; as a River that is straitned in its passage doth run with more violence . And for this reason it is , that often Torches or bright Flames have been seen where formerly Spots appeared ; and so on the contrary , the parts of Spots beginning to appear again , Spots have been seen where formerly Torches appeared . IX . Why the Spots about the Sun move so slowly . The Spots about the Sun , take up no less time than 26 Days in running round it , notwithstanding they are so near to the Body of it ; which slowness of their motion proceeds chiefly from hence , that a kind of Aether is generated , of the Striate Matter which the Sun continually casts forth , which extending it self a great way towards the Orb of Mercury , doth hinder the motion of the Maculae . X. The Cause of the Darkness which hapned at the Death of Christ . It doth not appear by Authors , whether the whole Earth was darkned at the Death of Christ , or the Holy Land only : But supposing ( as it is most probable ) that the whole Earth was obscured ( as the Scripture seems to assert , and Dionysius the Areopagite does plainly witness , who was a Spectator of this wonderful Eclipse at Heliopolis in Egypt ) the cause of this Obscuration can ▪ t be attributed to any thing better than to these Spots . Seeing it is possible for one Spot to spread it self over the whole Surface of the Sun , and to continue there for some time , before it be dispers'd again . And forasmuch as the Body of the Moon is much less than that of the Sun , we must conclude , that this total Obscuration could not proceed from the Moon alone , without the assistance of these Solar Maculae , or Spots . XI . The Moon assisted in the obscuration of the Sun , at our Saviour's Death . I will not deny , but this famous Eclipse might be caused by the intervention of the Moons Body , notwithstanding that it hapned at the time of the Full Moon . It appeared so to St. DENYS , as he testifies in his Epistle to Polycarpus : Whilst I was ( saith he ) at Heliopolis in Egypt , I beyond all expectation saw the Moon upon the Body of the Sun. Whereupon , as being astonished at this Prodigy , he cried out , Either the God of Nature suffers , or the Frame of thus World is dissolving . But then , because the Body of the Moon was not great enough to effect a total obscuration , the Solar Spots came to its assistance , and wholly cover'd the Sun for three Hours together . XII . How these Spots come to disappear again . As these Spots are generated , so in like manner are they dissolved again and vanish . For as Oil and other Liquors , do after some time suck into themselves again the Scum that hath cover'd their Surface ; so likewise the Striate Particles , that cover the face of the Sun , in process of time grow less ; and as they at first came from it , so they return to the Sun again . Except the thickness of the Parts , into which they are resolv'd , be such , that they are not able to pass through the Globuli , that are near the Sun ; and therefore are forc'd to wander about , and disperse themselves in the adjacent Heaven . CHAP. XVII . Concerning COMETS . I. The Nature of Comets . COMETS are certain Bodies appearing amongst the Stars , in the utmost part of our Heaven , and that in various Forms , and in bigness resembling Mars , Jupiter , or Saturn , when they are cover'd with a Mist or little Cloud . They are compos'd of the Parts of the Third Element , and are so solid , that after they have for some time been swiftly carried in our Heaven , they are cast off into some of the Neighbouring Vortexes of the Second Heaven , and so disappear to us . They are sometimes called Hairy Stars , because of Beams like Hair proceeding from them , by which they are distinguish'd from the Planets , which appear exactly Round . II. How Comets agree with , and differ from Planets . The Comets therefore agree with the Planets , in that both Planets and Comets are Vast , Round , Opake Bodies , flowing or swimming in the Heaven . And they differ , in that Planets are less solid than Comets , and therefore not capable of so great agitation , as whereby they may be driven out of the Sun 's Vortex , into other Neighbouring Vortexes ; as Comets which have a stronger impulse , by reason of their greater solidity , do continually pass out of one Vortex into another . III. The Peripaticks suppose Comets to consist of Earthly Exhalations . The Pertpaticks rank Comets amongst Fiery Meteors , and therefore attribute their Generation to Exhalations arising from the Earth , and kindled in the upper Region of the Air ; but the Modern Philosophers are of a different Opinion , and that for these following Reasons . IV. Reasons against the foresaid Opinion . First , Because Comets are in the Heaven , and not in the Air , as being observ'd to have either no Parallax at all , or a very small one , that is , less than the Moon , and consequently must be at a greater distance from us than she is : For the lesser the Parallax of any Star is , the greater is the Distance . Secondly , Comets cannot consist of Earthly Exhalations , because they are bigger than the Earth it self : For their appearing Diameter ( their Distance consider'd ) is oftentimes greater than the Diameter of any of the Planets . The appearing Diameter is different , according to the Distance of the Body , as being Smaller in a less Distance , and Greater in a greater Distance . Thirdly , If Comets were kindled Exhalations , no reason could be given why they should not decrease daily , as their fewel decreaseth ; whereas we find that they all increase and decrease after one and the same manner : For they are less at the Beginning and End of their appearing , and biggest in the Midst . But because some relate , that Sublunary Comets have at some times appeared , we will distinguish Comets into Bastard and True. V. The di●●inction of Bastard and true Comets . We call those Bastard Comets , which are compos'd of Earthly Exhalations , raised into the upper Region of the Air , and there kindled . But True Comets are such as are above the Moon , and which shine by reflecting of the Sun's Beams , not by being kindled into a Flame . Those of the first kind , if any such be , are Meteors ; but the latter are all wandring Stars . Book . 1. Part. 5. Chap. 17 G. Freman . Inv. I. Kip ● To the Worshipfull Andrew Lant of Thorp-vnderwood in the County of Northampton Esq . This Plate is humbly Dedicated by Richard Blome VII . The Original of Comets . But to the end we may the better understand the Original of Comets ( in case we should suppose any of them to be produc'd anew ) we are to remember , that the Matter of the First Element , which from other adjacent Vortexes , passeth thro' the Poles into the Center of our Vortex , doth carry along with it many striate Particles , which being unfit to comply with the swift agitation of the subtil Matter , are cast forth ; which afterwards , because of the inequality of their Figures easily cling and stick fast together , and by this means come to constitute great Masses , and being close to the Star from whence they proceed , resist the Action , wherein the Nature of Light consists ; and in this respect , are very like those Spots about the Sun , which we have already spoken of . VIII . How a f●●'d Star becomes changed into a Comet . Now , whenever it happens that a Star is cover'd with so many and thick Spots , as that its Vortex becomes swallow'd up of other adjacent Vortexes : Then if it be so solid , that before it comes to that Term or Limit , where the parts of the Vortex are most slowly moved , it happens to acquire a motion equal to that of those Parts amongst which it is , in this case it descends no lower , but from this Vortex passeth into others , and becomes a Comet . But if it be less solid , and consequently descends beneath that Bound , then it continues there at a certain distance from the Star , which is in the Center of that Vortex , and whirls round about it , and by this means becomes a Planet . For this is the difference betwixt a Comet and a Planet , that a Comet being more solid , is carried from one Vortex into another ; whereas a Planet continues fix'd to one Vortex , and is obsequious to its motion . IX . The Air is not the Place of Comets . Tho' Modern Authors be much of the same mind with one another about the Substance of Comets ; yet are they at great Variance about the Place of them . Some will have them generated in the Third Region of the Air , as being of Opinion , that the Exhalations , of which they suppose Comets are made , cannot ascend higher . But this Opinion , as hath already been made out , is not probable ; forasmuch as the same Comet , is at the same time perceived in divers very remote Parts of the World , especially that of the Year 1618 , which was seen in Europe , and in the East-Indies , which could not have been , had its place been in the Air. X. They run round the Earth in 24 H●ur● . Besides , Comets commonly compass the whole Earth in 24 Hours time , and are observ'd to make the same stay above , as under the Horizon . All which may easily convince us , that they must be above the Air. For the Earth is not far distant from the Circle of the Air , and compar'd with it , hath a considerable Magnitude ; so that if from its Surface we should divide the Air into two Halves , they would not be equal , but the Half hid from our sight , would far exceed the other ; and accordingly a Comet would longer continue under , than above the Horizon ; which we find not to be so . XI . The Place o● the Comets is between Saturn and the fix'd Stars . Comets therefore are to be placed in that Space , which is between Saturn and the fix'd Stars ; as appears by their Excursions , and other of their Appearances . Neither can they be placed amongst the Planets , forasmuch as they are Regular in their Motion about the Sun , and never wander out of their Spheres . And by this means we may easily apprehend , how Comets absolve their Revolution in 24 Hours time , and continue no longer under , than above our Horizon ; because the Bigness of the Earth being inconsiderable , with respect to that Space they move in , we may well enough divide the Circle of the Air into two equal Halves . XII . Why some Astronomers say , that Comets are only above the Moon . And tho' Tycho , and other Astronomers , who have acurately observ'd their Appearances , have only said , that they were above the Moon , towards the Spheres of Venus or Mercury , and not above Saturn , ( tho' they might as well have concluded , that from their Calculations ; ) the Reason whereof was , because they disputed against the Ancients , who took the Comets to be Meteors , and therefore were content to shew that they were in the Heavens , and were loath to attribute to them all the height , which they had found out by their Calculations , lest they should be disbelieved , by advancing such incredible Paradoxes . XIII . Comets that wander out of our Heaven , are no longer s●en by us . But forasmuch as the Space which is between Saturn and the fix'd Stars , is Immense ; we say that Comets , how great soever they may be , cannot be seen by us , if they be far distant from our Heaven ; for the Light which they borrow from the Sun is very weak , neither have they force enough , at such a distance , to affect our Sight . Which is the Reason , that when they approach to the fix'd Stars , they disappear ; or if their Body appear , yet their Tail is hid . But the fix'd Stars , which are beyond them , easily transmit their Light to us , because they have a Light of their own , which makes them dart their Rays more strongly ; whereas Comets that shine only with a borrowed Light , must be in our Heaven , to be seen by us . XIV . How the Comets are moved . The Comets do all of them seem to move about the Earth from East to West , and in this their Motion they describe Circles almost parallel to the Aequator . But besides this apparent Motion , which is common with them to all the rest of the Stars , they have another that is peculiar and proper to themselves , but very irregular and indeterminate , by which some of them move from East to West , others from West to East , or to other Coasts of the Heavens . Neither can their Course be said to be Regular , but rather various and unequal , since some of them pass through a greater Space of Heaven than others . But however Great this Space may be , there are but few of them that ever were perceived to run through above one Half of the Heaven . XV. What the Beard ▪ Tail , and Hair of Comets i● . When a Comet casts its Rays towards that part of the Heaven , whither it is carried by its own M●tion , such Rays are commonly called a Board ; but when they tend to that part from whence it tends , then are they called the Comets Tail ; and when they are cast forth circularly , we call them Hair , or a Rose . XVI . The Cause of thes● Appearances . It will not be difficult to give a Reason of these Phaenom●na , if we call to mind that the Heavenly Globuli of the Vortex wherein we live , are by so much less , as they draw nearer to the Center ; and by degree● grow greater and greater until the Sphere of Saturn , where they are of an equal bigness , and are more swiftly moved . When therefore a Comet , taking its Course beyond the Region of Saturn , transmits the Rays it receives from the Sun to us , it at the same time pushes forwards the Globuli of the Second Element in Right lines to our Eyes , which imparting their active Force to others that are under them , produce an entire and pure Light , which makes the Head or Body of the Comet to appear to us : Whereas those which fall obliquely upon the little Globuli that are beneath , or on the sides of them , are partly refracted , and so represent a Beard or Tail to us . But those which are disperst round about on all sides , exhibit Hair , or a Rose . For the variety of all these Appearances proceeds only from the Reflexion of the Rays of Light upon the Comet ; which having been refracted by passing through the Heavenly Globuli , are so received into our Eyes , as if they came from those parts , where we think we perceive the Beard , Hair , or Tail of the Comet . Thus the Globuli of the Second Element , 3 , 2 , 1 , 9 , 7 , which are extended from the Sun to the utmost Bound of the Sphere of Saturn H , C , I , are very small , whereas those that go beyond that Sphere H , F , A , 4 , 5 , 6 , I , do exceed them in Bigness ; so that each of the greater Globuli , that are in the utmost part of the Sphere of Saturn , may be surrounded by 7 or 8 of the smaller Globuli that are lower . And forasmuch as the greater Globuli , falling perpendicularly upon the Sphere of Saturn , do push upon few of those that are under them , they must necessarily produce only a weak Refraction of Light ; whereas on the contrary , those that fall obliquely upon it , since they have many little ones on one side of them , must needs make a greater Refraction of weak Rays . As for Example ; the Greater Globulus C , falling perpendicularly on the little ones that are under it , hath only 2 Globuli , viz. 1 and 3 on each side , and therefore both ways produceth small Refractions , deflecting from the Perpendicular CB , whereof the one is only directed from C to D , but the other from C to E : But the greater Globuli H and I , falling obliquely on the lesser , do push forwards 6 or 7 of them , viz. those that lye under them ; and therefore the greater Globulus I , produceth a considerable Refraction from I unto B , deflecting from the Perpendicular IK ; and so likewise the great Globulus H , makes a great Refraction from H , to B , deflecting from the Perpendicular HG . XVII . How Comets come to appear with Tails , Hair , and like Beams . Hence it appears how Comets come to appear with Tails , Hair , or like Beams . For let us suppose the Sun to be S , and the Sphere through which the Earth is supposed to be carried in 24 Hours time , to be 2 , 3 , 4 , 5 ; the Term from whence the Heavenly Globuli begin to grow less and less by degrees till they reach the Sun , to be D , E , F , G , H , and C , to be the Comet plac'd in our Heaven ; it is manifest that the Rays of the Sun are not only reflected from the Comet in the Right lines CF3 , CH6 , CG4 , CE2 , and CD7 ; but that they are also refracted side-ways , and dispersed ; so that according to the various Position 2 , 3 , 4 , 5 , of the Spectator upon the Globe of the Earth , the Comet seems either to have a Tail , as in 2 and 4 ; for by means of the direct Rays C , G4 , or C , E , 2 , the Body or the Head of the Comet appears to us , and by the help of the refracted and weaker Rays , its Tail or Hair is discovered by us : Or with Hair , as in 3 ; for its Head is seen by us , by means of the strong and direct Rays C , F , 3 ; and by the Refracted and weaker on one side of it , C , G , 3 , and on the other C , E , 3 , we see the Hair of the Comet : Or nothing but its Tail is seen by us in the form of a fiery Beam , as in that part of the Sphere of the Earth 5 , by means only of the weaker and refracted Rays C , D , 2 , 5 , or C , H , 4 , 5 ; because no other Rays can reach the Eye of the Beholder , as long as he is posited in that part of the Terrestrial Orb , marked 5. XVIII . A Reason given of the various Appearances of Comets . And from what hath been laid down , a Reason may be also given of all the other Phaenomena of Comets . As , First , Why they appear rarely , and not at set times or seasons . Secondly , Why they do not move long in our sight . Thirdly , Why they seem to be less at the Beginning , greatest in the Midst of their Course , and afterwards grow less and less by degrees . Which happens , because at first they are further from us ; in the middle of their Course , nearer , and in a fitter condition to reflect their Rays ; and towards the end of their Course , again more remote from us . Fourthly , Why their Motion at the beginning is slower , in the middle swifter , and at the end slowest of all . The Cause whereof is , because the Comet at its first ingress meets with some Resistance , because of the Renitency of the Vortex , from whose Force it afterwards receives power to move more swiftly ; and towards the end of its Course it is resisted by the Neighbouring Heaven , towards which it tends . XX. Why no Hair appears about Saturn . If any demand , why no Hair appears about Jupiter and Saturn , as well as about the Comets ? I answer , That sometime there is a kind of appearance of short Hair seen about them , in that part which is opposite to the Sun , in places where the Air is very pure and clear . Wherefore , when ARISTOTLE saith , Lib. 10. Meteorologic . cap. 6. that the fix'd Stars have sometimes been seen , with Rays in the manner of Hair about them , I suppose it ought rather to be understood concerning these Planets . But as to that which he relates of the Hair , that appeared about one of the Stars in the Thigh of the Great Dog , it must have proceeded either from some very oblique Refraction in the Air , or rather from some fault or defect in his Eyes : For he adds , That it was less conspicuous when he fix'd his Eyes strongly upon it , than when he beheld it more remisly , and without any earnest intention . CHAP. XVIII . Of the Nature , Original , and Affections of Planets . I. What the Planets are . THe Planets are Various , Round , and Opake Bodies , hanging in the Vortex of the Sun , and by it carried about the Sun , as a kind of a common Center of their Motions , receiving its Light , and variously conveying the same to our Eyes . That they are solid and opake Bodies GALILAEUS shews , who by the help of his Tube hath discover'd no less inequalities in the Moon , than we meet with in our Earth . II. Their Number . There be Seven of them , which are counted in this order ; Saturn , Jupiter , Mars , the Earth , the Moon , Venus and Mercury . III. Whether the Sun be to be reckon'd amongst the Planets . The SUN is commonly counted to be one of the Planets , but by a mistake ; for besides that the Sun is not an Opake , but a Lucid Body , nor hanging in another Vortex , but having its own proper Vortex ; neither hath it likewise a wandering Motion , like the Planets , but is continually turn'd round in its own Vortex ; and therefore cannot be reckon'd amongst the Planets . IV. The Planets are compounded of the Matter of the Third Element . The Planets were formed of the Particles of the Third Element , from the running together whereof they became great Bodies . For no sooner was Motion communicated to the several Parts of the World , but the most subtil Parts ( made so by their rubbing against one another ) constituted the Sun and fix'd Stars ; the Round parts ( which Roundness they obtain'd also by their running against each other ) made the Heavens ; and the thicker and grosser Parts , being by reason of the inequality of their Figure , less fit for motion , formed the Seven Planets ; ♄ Saturn , ♃ Jupiter , ♂ Mars , T the Earth , ☽ the Moon , ♀ Venus , and ☿ Mercury . So that the whole Matter of this visible World may aptly be divided into three General Heads of Bodies , viz. such as send forth Light , as the Sun and fix'd Stars ; such as transmit Light , as the Heavens ; and such as Reflect the Light , as the Earth , with the rest of the Planets . V. They have no Light of their own . For the Planets being destitute of all Light of their own , shine only with borrowed Rays ; and accordingly we find them only to be resplendent on that side which faceth the Sun ; whence we conclude , that they only reflect to our Eyes the Rays they receive from the Sun. This we experience in the Earth , Mercury and Venus , and all the Secondary Planets , which in Eclipses are either wholly or in part obscured , when they come within the Shadows of other Planets ; and being out of the reach of them , do only spread a Conical shadow from their opposite part to the Sun. And we may believe the same of Mars , Jupiter and Saturn ; which by how much nearer they are to the Sun , the greater Light do they cast ; and so much the weaker , as their distance is farther from it . The same is also manifest from hence , because the Light of all the Planets is more dim , than that which is seen in the Sun and fix'd Stars ; as likewise , because there is not so vast a distance between them and the Sun , but that he can communicate his Light to them . VI. The Earth is to be accounted amongst the Planets . And we are to suppose the same of this Earth we inhabit , which being made up of Opake Bodies , does as strongly reflect the Sun's Rays , as the Moon doth . It is also surrounded with Clouds , which tho' they be less Opake than many other Parts , and therefore do not so strongly reverberate the Light ; yet we sometimes see them cover'd with as bright a Whiteness , as the Moon it self exhibits to us , when she is illustrated by the Sun. The same is also confirm'd , for that when the Moon intervenes between the Sun and the Earth , we see that its Face doth reflect a kind of obscure Light , which , as far as we can guess , must proceed from the Earth , which reflects the Beams it receives from the Sun to the Moon . Which obscure Light sensibly decreaseth , as the illuminated part of the Earth turns away from it . VII . The Planets are not perfectly Round . Tho' it cannot be doubted , but that the Planets are Spherical Bodies , like the Earth ( for if they were of a plain figure , they would in one and the same moment be totally enlightned ; ) yet are they not so perfectly Round , but that their surface is very rough and uneven . For we find by the help of Telescopes , that they abound with Cavities and Eminences , corresponding to our highest Hills and deepest Valleys , ( as GALILAEUS tells us concerning the Moon , System . Cosm . Dial. prim . ) many whereof are continued for a Tract of an hundred Miles together ; others again are single and compriz'd in one Heap . There appear also many steep and solitary Rocks . But the most frequent things to be seen there , are a kind of Bulworks ( I call them so , because no fitter word occurs ) of considerable Height , which encompass Spaces of different magnitude and figure , the most frequent being Circular . Many whereof have in the midst of them an high Mountain , and others seem to be filled with an obscure Matter , like those great Spots , which we may perceive in the Moon . From all which Particulars we conclude , that the Moon and the rest of the Planets , are altogether like our Earth , which if a Man could behold from the Moon , would appear much as the Moon shews to us , who view it from the Earth . VIII . The Planets are not so solid as Comets . We are in the next place to consider how the Planets came to be , and what is the cause of their different Distance from the Sun , and from themselves . This will be the more easily cleared , if we consider , that the Planets are less solid than the Comets , and therefore are not tost from one Vortex to another , but continue in that of the Sun ; as small Boats are driven about in a Whirlpool , or carried along with the Stream of a River . Whence we may apprehend , that the Planets , as soon as they were got into the Sun 's Vortex , began to sink down towards the Center , till they met with those Coelestial Globuli , whose motion was proportion'd with theirs . For seeing that the greater Globuli are more vehemently agitated , and withdraw themselves farther from the Center of their Vortex , it could not be , but that by their pushing against the Planets that are less solid , they must drive them towards the Midst ; and when the Planets were sunk so low , that they met with those Globuli that were inferiour to them in bigness and force of motion , they run back from the Center , till arriving to that place of the Vortex where they were in equal poise , they neither came nearer to the Sun , nor went farther from it ; but hanging there equally poised between those Heavenly Globuli , whirl'd continually about the Sun. IX . Of the first Production of Planets . Wherefore we may imagin , that in that Space where we place the great Vortex of our Heaven , there were at the Beginning 14 or more Vortexes , the less whereof , and such as were weakned by reason of their Spots , were swallowed up of the Greater ; which at last , together with the Lesser , fell into one common Vortex , viz. that of the Sun. So that the Stars , which in the Centers of the four smaller Vortexes , encompass'd Jupiter , betook themselves to that Planet ; and those which were in the Centers of other Vortexes near to Saturn , tended towards Saturn ; as Mercury , Venus , the Earth and Mars tended towards the Sun. So that of so many Stars , all shining with their own light , the Sun only remained , whilst all the rest being covered with Spots , did not send forth light , but only reflect it . X. Why th● Planets are at farther distance from , or nearer to the Sun. It appears from what hath been said , why the Planets do not equally recede from the Center , and at different distances are carried about the Sun ; this being to be imputed to their different solidity . For the Globe of Mercury , by Example , is nearer to the Sun than that of Venus , and the Globe of the Earth nearer than that of Mars , for no other reason but because they are less solid . XI . What the Solidity of Bodies is . Now Solidity is nothing else , but the proper Quantity of a Body compared with its Bulk and Surface ; which is not only estimated from the Closeness and Thickness of its parts , but also by its Figure , and especially from the less extent of its Surface . For Bodies of a less Surface , do more easily pierce other Bodies : and therefore the greater the quantity of matter is , under a less Bulk and Surface , the more solid that Body is . As appears in Gold and other Metals , which when once put in motion , have a greater force to continue the same , than more lax and open , or porous Bodies ( as Wood and Stone ) of the same Bigness and Figure ; and therefore are esteemed more solid , that is , to have in them more matter of the Third Element , and less Pores filled with the First and Second Element . And this is the reason why Mars , tho' less than the Earth , yet is farther from the Sun than it , even because of its greater solidity . XII . The Planets differ in Solidity amongst themselves . The Planets therefore , as hath been said , according to their greater or lesser Solidity , are farther from , or nearer to the Sun. By reason of this greater Solicity , Saturn is most remote from the Sun , whose Motion , if it had been swifter , and his Solidity greater , he would have been forced out of his Vortex , and become a Comet . Next to Saturn is Jupiter , with his four Secondary Planets , which we suppose did fall down into his Neighbourhood , before that Vortex , whose Center Jupiter was , had been swallowed up by the great Vortex of our Heaven . After him follows Mars , who , because of the extension of his Body , that is , his Magnitude and Figure , is more solid than the Earth . Next to him is the Earth , surrounded with its own Vortex , about which the Moon is whirl'd in a Months time . For the Moon tending towards the Earth ( as the Jovial Planets towards that Planet ) was swallowed up of its Vortex . Venus is nearer the Sun than either the Earth or the Moon , but the nearest of all is Mercury , as being the most solid of them all . XIII . The Planets are either Primary or Secondary . The Planets are divided into Primary and Secondary . Primary Planets are those that perform their Periodical motion only about the Sun , and not about any other Planet . Secondary , are such as are joined with another Planet , and together with it , are carried about the Sun. Thus the Moon is a Secondary Planet with regard to the Earth , the Jovial Stars with regard to Jupiter ; and so are those other Stars that attend upon Saturn . By the Astronomers they are commonly called Satellites , or Guards of those Planets to which they belong . CHAP. XIX . Concerning the Principle of the Planets Motion , and of their Direction , Station and Retrogradation . I. Why the Planets are called Wondring Stars . SEeing that the Heavens are Fluid , and that the Planets do , as it were , swim in their Orbs , as in so many Rivers , it may be enquir'd what is the Principle of their Motions ; as likewise what the cause is of those wandering excursions , whence the name of Wandering Stars hath been given them . Which name , we may believe , was therefore attributed to them ; for that being carried about in the Sun 's Vortex , they seem sometimes to approach nearer to , and sometimes to remove farther from one another ; sometimes to ascend , and at other times to descend ; sometimes to come nearer to the Sun , and at other times to withdraw at a greater distance from him . Whence arise the Conjunctions and Oppositions of the Planets , as likewise their Aberrations in Longitude and Latitude , so often inculcated by Astronomers . For tho' the Planets turn round about the Sun , yet do not they keep on their Course in the same direct Line , but do sometimes ascend , and at other times descend , as we see wooden Bowls do that swim in a River . And this their Deflexion is called Aberration in Latitude . Or else they are sometimes nearer the Sun , and sometimes farther from him ; which are called Aberrations in Longitude . And this is the Reason , I say , why the Planets are call'd Wandering Stars , because they seem to roam at random , without keeping a steady course . II. The First Cause of the wandering motion of the Planets . This wandering motion of Planets may be attributed to several Causes . As First , to the Figure of those Spaces wherein they move ; for these , not being perfectly Round , but spreading more in Length than Breadth , it must needs be that the Heavenly Matter , that carries them , must move more swiftly , where it is narrowly pent up , than where it hath a broader space to move in . As we see that the Wind blows with less force in an open Field , than where it is straitned in a narrow Passage ; and as a River runs more swiftly where it is straitned in its course , than where the Channel is wider . III. The Second Cause . In the second place , for as much as these Spaces do touch one another , the matter of the First Element , passing from one space to another , doth according to the different degree of its motion , variously push forwards , and determine the Globuli of the Second Element , to drive the Planets more towards one part of Heaven than another . For the matter of the First Element being more swiftly moved , than the Globuli of the Second , it cannot but by pushing them forwards , move the Planets that are poised in the midst of them . IV. The Third Cause . Thirdly , This difference in the motion of Planets , sometimes ariseth from themselves , as when their pores are more fit to receive the particles of the First Element , proceeding from some Neighbouring Body , than others . Which sometimes also happens , when the Pores of Planets are more adapted to admit the striate Particles , which come driving from some certain part of the Heaven : For these particles being entred into the Cavity of the Planets , do variously agitate them , directing them towards those places to which they did tend . As the Wind turns a Ship to this or that part , according as it penetrates the pores of the Sails , or other open passages of the Vessel . V. The Fourth Cause . Fourthly , The same Motion which in the beginning of the World was imprest upon the Planets , may be preserved to this instant , seeing that every Body continues in the same state , and is never changed but by External Causes . Thus a Top that is made to turn round by a Boy , hath a force to continue the same motion for some moments , notwithstanding the resistance it meets from the Air and the Earth . And accordingly we may believe that a Planet likewise hath a power to pursue the motion imprest upon it at the beginning , without any considerable loss of its swiftness ; because the space of 5 or 6000 years , is a less time , compared with the vast bulk of a Planet , than one minute , compared with the littleness of a Top. VI. The Fifth Cause . In the last place we may add , That the power of continuing in its motion is more firm and steady in the Planet , than in the Heavenly matter that surrounds it ; and in a greater Planet more than in a less . Because the Globuli , which are the parts of a Fluid Body , cannot so well conspire in the same motion , as the Particles of the Third Element do , which constitute the Compact Body of a Planet . Wherefore also it must be less obnoxious to those changes that happen to the motion of the Coelestial Globuli , by how much the greater and compact it is . VII . The Periodical and Daily Motion of the Planets . Every Planet hath a twofold Motion ; the first Periodical , whereby every one of the Primary Planets , together with its Attendants , is carried about the Sun : For that they are whirl'd about in their Orbs by the force of the Solar matter , appears from hence , because the nearer they are to the Sun , the sooner they absolve their Circuit : Not to mention now the motion of the Spots in the Sun , which , without doubt , proceeds from the whirling about of the Solar matter . The other is the Diurnal motion , whereby a Planet seems in the space of 24 hours to move about the Earth from East to West . But this Motion doth not properly belong to the Planets , but is common to them with the Comets and Fixt Stars , by reason of the Diurnal motion of the Earth , as will appear hereafter . VIII . How the Planets are carried about by their Annual Motion . A Planet therefore is whirl'd about its Center , much after the same manner , as we see that a Trencher swimming in a large Vessel full of Water , that is swiftly whirl'd about , doth not only follow the circular motion of the water , but besides turns about its own Center . The Famous CASSINUS observed this in 1672. in the Body of Jupiter : for he having observed a Spot at 7½ . a clock in the evening in the midst of the Belt , he found at 5 a clock 26 minutes in the morning , that it was return'd precisely to the same place . And therefore from this and many other observations , he determined not only the Revolution of the Spot , but also of the Body of Jupiter , which he found to be performed in 9 hours 55 minutes , and 58 seconds ; and the same was perceived by him not only in Jupiter , but also in Mars , Venus and Mercury . IX . The Cause of these two Motions . This twofold motion of the Planets ariseth from hence , because the Coelestial Globuli that surround them , do not only carry them along their Orbs ; but also because of the Propension they have , to pursue their motion in Right lines , they do more strongly exert their force upon their External parts , that are more remote from the Sun , than upon their Inward parts that are nearer to it : by which force they impress that motion upon it , which makes it whirl about its own Center . X. The Planets that are nearest to the Sun are most swiftly moved . The Consequence whereof is , that the Inferior Planets , or those that are nearer the Sun , must move more swiftly than the Higher . Because the matter of the First Element , which constitutes the Sun , by being swiftly whirl'd about , doth with a greater force drive along with it , the nearest parts of Heaven , than those which are more remote . XI . How it comes to pass that Mercury and Venus seem to turn about from East to West in 24 hours . These things presupposed , it will be an easie matter to explain the motions of the several Planets , and how it comes to pass that they seem to be carried from the East to the West . For supposing that the Heavenly matter that surrounds the Sun , is moved round it from West to East , and , without any interruption of its own Revolution , carries along with it the Earth about its Center in 24 hours ; we shall easily conceive , that Mercury and Venus must appear to us to move from East to West , and every day to describe a Circle Parallel to the Aequator . And that they must likewise describe a Circle about the Sun from West to East , as being contained in the same matter , that carries the Earth round . XII . They must describe a great Circle . We shall also apprehend that these two Planets , as well as the Earth , must be found under the Zodiack , because it is the greatest Circle , which the Coelestial matter , by which they are carried about , describes . For as much as according to the Law of Nature , every Body that is circularly moved , endeavours to recede from the Center of the Circle it describes . XIII . How it comes to pass that the Axis of the Earth observes its Parallelism It will also appear how the Axis of the Earth , which by its Annual motion is carried about the Sun , continues always Parallel to it self , or which is the same , how its Poles always respect the same points of the Firmament , viz. If we observe that the Diurnal motion of the Globe of the Earth , Water and Air doth determinate the subtil matter , which is in continual motion in the Bowels of the Earth , to go forth to the Plains parallel to the Aequator ; and that at the same time , a like quantity of matter , proceeding from the parts of other Vortexes remote from the Poles , must enter into it by the Poles . For this supposed , it will easily be believed , that after the Earth hath once admitted the Subtil matter , coming to it from one part of the Heaven , its pores will thereby be the more fit to receive the like matter again , than any other proceding from other parts , as being more accommodate to it . And therefore it is no wonder , if those Pores which we apprehend to be Parallel to the Axis of the Diurnal motion , are so hollowed as to answer one another , and thereby give free admittance to the subtil matter . Which being granted , it is necessary that the Poles of the Earth , must always answer the same points in the Firmament , and its Axis observe a perpetual Parallelism to it self . XIV . Mars , Jupiter and Saturn are moved like the other Planets . And the same is to be said of Mars , Jupiter and Saturn : For seeing that these three Planets do seem so to run round the Sun , as that the Circles which they describe , do include the Circle of the Earth , we must admit that they are pois'd in the Coelestial matter as well as the Earth , and are at a far greater distance from the Sun , than it is . In like manner we must confess that Mars , Jupiter and Saturn must seem to run round the Earth from East to West in 24 hours , and to be carried away by the Heavenly matter , in the same manner as Mercury , Venus and the Earth are . Only with this Difference , that seeing their Circles are much greater than that of the Earth , so they employ a greater space of time in running through them . For whereas Mercury is whirl'd about the Sun in 3 Months , Venus in 8 Months , the Earth in a years time , Mars spends 2 years in his Revolution , Jupiter 12 , and Saturn almost 30. For the distance between these three latter , and the Sun being greater , the matter which carries them , requires more time to run over those vastly greater Spaces . XV. How Planets come to be Direct , Stationary and Retrograde . From these various Courses of the Earth and Planets in their Revolutions about the Sun , it comes to pass that they appear to us on the Earth Direct , Stationary and Retrograde . For tho' their motion be continual , without any stop or Retrogradation , yet doth the motion of the Earth produce these various appearances , as oft as in its Revolution it intervenes betwixt the Planets and the Sun. Because when the Earth is whirl'd about the same way , swifter than the Planets , we must see them answering to divers parts of the Heaven of fixt Stars , and to be carried opposite to that part , whither we , together with the Earth , are carried . XVI . What Planets are sai● to be Direct , Stationary and Retrograde Those Planets therefore are called Direct , which pursue their Course according to the procession of the Coelestial Signs ; as from ♈ to ♉ , from ♉ to ♊ . Planets are said to be Retrograde when they proceed contrary to the Succession of the Signs ; or which having first been moved towards the East , seem now to turn back towards the West : and those are called Stationary , which keep the same place under the fixt Stars for several days together . These Stations of the Planets , are observed before and after their Retrogradations , because the Determination of the motion of the Earth , doth deflect a little with respect to the Determination of the motion of the Planets , by which means the swiftness wherewith we are then snatcht away , doth only serve to advance us , as much as is needful , to behold that Planet which is Stationary , for several days together , under one and the same part of the Firmament . XVII . How Planets appear direct to us . The thing will be better apprehended by the Figure . Suppose we then the Sun placed in the midst of a Circle , about whom let us place the Circle a d g k , described by the Annual motion of the Earth . The other Higher Circle intersected by numeral figures , we suppose to be the Orb of some one Planet , viz. of Mars , Jupiter or Saturn , and the Circle NGA , to represent the Heaven of Fixt Stars . These things thus laid , let us suppose that the Earth , by its Annual motion is about the Point a , and that Jupiter is in that part of his Circle marked only by 1 ; then Jupiter will appear to those that dwell upon the Earth , in the part of the Heaven of fixt Stars , noted A , by the right line , a 1 A. Conceive we afterwards , the Earth to be advanced from a to b , and Jupiter from 1 to 2 , at the same time ; and Jupiter will appear to us to have moved on directly in the Heaven , according to the Order of the Signs from A to B ; and when the Earth afterwards is advanced to c ; and Jupiter to the part of his Orb 3 , Jupiter will be seen advanced from B to C , alway keeping a Direct motion . And when afterwards the Earth is come to d , and Jupiter to 4 , Jupiter will appear to have advanced by a direct motion from C to D. And when the Earth hath reached the Point e , and Jupiter 5 , then Jupiter will appear to have moved from D to E , according to the order of the Signs . XVIII . How they come to appear Stationary and Retrograde . But when the Earth begins to be more directly interposed between Jupiter and the Sun , by that time the Earth comes to f , and Jupiter to 6 , then will Jupiter appear to have gon back from E to F ; and because this interval is very small , therefore he is said to be Stationary , because he appears unmoved and standing still . The Earth afterwards being advanced to the point g , and Jupiter to 7 , Jupiter will appear to have moved Retrograde from F to G. Again when the Earth is come to h , and Jupiter to 8 , he will appear to have past Retrograde from G to H. And lastly , when the Earth is come to i , and Jupiter to 9 , he will seem to have moved Retrograde from H to I , which space being very small , Jupiter will again appear Stationary . XIX . How they come to appear direct again . Afterwards , when the Earth is advanced to k , and Jupiter to 10 , he will seem to have proceeded directly , according to the Order of the Signs , from I to K. The Earth being come to l , and Jupiter to 11 , he will seem to have pursued his Course directly from K to L. And lastly , when the Earth hath reached the Point m , and Jupiter 12 , Jupiter will appear to have advanced directly from L to M. XX. The same may be shewed in like manner concerning Saturn , Mars , Mercury and Venus , but not of the Moon . The same may be demonstrated , not only concerning Saturn and Mars , but also concerning Venus and Mercury ; which always appear Stationary , as oft as we remove from the opposite Region to the same ; or from the same to the opposite Region ; because the Earth is then so turned about , as to make them to be seen under the same fixt Stars , for some time together . These Planets appear Retrograde , when they are in opposition to the Sun , Direct when in Conjunction , and never so in any other places . But we are to observe , that Retrogradations are more frequently seen in Saturn than in Jupiter , and in him more frequent than in Mars , because of the slowness of Saturn's motion , which makes that the Earth in a shorter time doth overtake him . But on the other hand they are more rare in Mars , his motion being swifter than that of Jupiter , and consequently must spend more time to overtake him . But these Affections are not incident to the Moon , because she , in whatsoever part of the Earth we are , runs about us , as about her Center , her Orb being comprehended within the Orb which the Earth moves in . CHAP. XX. Of the Motion of the Moon , and its various Appearances , or Phases . I. The Moon is carried about in the same Vortex with the Earth . FOrasmuch as it is manifest from what hath been already said , that the Moon is not only carried about the Sun , but also about the Earth , and that there is only a small space between us and her ; we may easily guess her to be contain'd in the same Vortex with the Earth . And consequently since the matter of this Vortex , doth whirl the Earth about its Center from West to East , we may conclude that it also carries the Moon along with it . But since the Circle which the Moon runs through , is almost 60 times bigger than the Compass of the Earth , we may gather , that if the Earth , by its diurnal motion is whirld about its Center in the space of 24 Hours , the Moon will not be able to finish her Revolution in less than about a Months space . II. The Moon may appear to move from West to East , or contrarily , within the space of one Month. This long time the Moon spends in her Revolution , is the Cause that she seems to run round the Earth every Day from East to West , whilst in the mean time the Earth turns round from West to East . Tho' this doth not hinder the Moon from appearing to run through all the Signs of our Zodiack from West to East . III. What the Perigaeum and Apogaeum of the Moon is . The Moon is sometimes nearer to the Earth , and that is her Perigaeum ; and at other times further from it , which is her Apogaeum . This comes to pass , either because the Peculiar Vortex of the the Earth ABCD , is sometimes bigger , by reason of the Matter of the First Heaven more abundantly crowding into it ; and at other times becomes less , because of the Expulsion of it again . Or else , because the Moon is more or less push'd on towards the Earth , by the various agitation of the First Heaven . IV. The Moon advanceth swifter when she is New , than in her Quarters . The Moon seems to move swifter when New and Full , than at the Quarters . The Reason whereof is , for that her Vortex ABCD , by being press'd upon by the Orbs of Venus and Mars , between which it is placed , is thereby reduc'd to an Elliptical or Oval Figure . Hence it is that the Coelestial Matter moves more swiftly in the narrow Parts B and D , of this Elliptical Heaven , and more slowly in the broader Spaces A and C ; and therefore the Moon , in her Conjunction and Opposition , or at the New and Full , must be more swiftly carried about the Earth towards the East ; because the Spaces it then runs through are more narrow , and do not suffer it to wander . V. Why the Moon is not exactly moved under the Aequator . If the whirling about of the small Vortex ABCD , which carries the Moon along with it , did only accord with the Motion of the Earth , then the Moon would appear to move under the Aequator from West to East ; and on the contrary , if the motion of the said Matter should only agree with the motion of that great Vortex , which has the Sun for its Center , then it would only be seen under the Ecliptick . But seeing it is to agree with the motion of them both , it follows , that its motion must neither be under the Aequator , nor under the Ecliptick , but under another Third Circle , which comes nearer to the Aequator , than the Ecliptick ; because the Moon is nearer to the Matter of the Sun 's Vortex , than to that of the Earth . VI. Above one half of the Moon is always illustrated by the Sun. The Moon being a Round Body , and receiving its Light from the Sun , it follows , that always one half of it , yea , somewhat more , must be enlightned by him . For seeing that the Sun exceeds the Moon in Bigness , and that the bigger Sphere always enlightens above half of a less , it does follow , that above one half of the Body of the Moon must always be illuminated . But seeing that the Moon alters her Position , and in running about the Earth doth variously face the Sun ; it must needs be , that according to its various Access to , or Recess of the Sun , less or more of the illuminated Half will appear to us ; which Variations of her Appearance , are commonly called her Phases . VII . The Conjunction of the Moon with the Sun , is not to be accounted amongst her Phases . The Philosophers commonly reckon up four Phases of the Moon , according to the Fourfold respect which the Moon hath to the Sun , in different parts of the Zodiack . Whence it receives different Names ; for the Moon 's meeting with the Sun in the same Degree of the Zodiack , is called the Conjunction or New Moon . Tho' it seems that the Moons Conjunction with the Sun , ought not to be accounted amongst her Phases ; because the Moon at that time doth not appear to us at all , it s enlightned part being wholly turn'd away from us , and its dark part turn'd towards us . VIII . The first Phasis of the Moon . The first Phasis therefore of the Moon is , when she being newly come from her Conjunction with the Sun , by moving in her Orb ABCDEFGH , reacheth B , whence she appears to us on the Earth I , Horned ( or Crescent-wise ) because of the Hollowness which is seen in her Illuminated part . IX . The second Phasis of the Moon . The second Phasis is , when the Moon about the Seventh or Eighth day , being 90 Degrees distant from the Sun , doth represent the full Half of her Enlightned part C , whose Horns or Points are directed to that part of Heaven which is opposite to the Sun , as from whence it receives its Light. and here she appears Bisected , or divided into two Halves . X. The third Phasis of the Moon . The third Phasis is , when the Moon D , advancing towards an Opposition with the Sun , exhibits to us more than one half of her Illuminated part , and therefore appears Gibbous or Bunching out on both sides . XI . The fourth Phasis . The fourth Phasis happens , when the Moon E being 180 Degrees distant from the Sun , and in Opposition to him , turns her whole Enlightned side towards us , who are placed betwixt the Sun and her . XII . The same Phasis happen to to the Moon , when she is in the Wane . The same Phasis also belong to the Moon in Decrease , according to her various Aspects to the Sun. For when by going back she hath reach'd F , she appears Gibbous ; when to G , Half ; and at H. Crescent-wise again ; till returning to A , her Enlightned part be wholly turn'd away from us towards the Sun. XIII . The Moon is more illuminated at the New , than at the Full Moon . The Moon is never less Enlightned than when she is at the Full , or in Opposition with the Sun ; and never more than at the New , or when she is in Conjunction with the Sun ; because when she is Full , only that part towards us is Enlightned : Whereas when New , she is wholly illuminated , that part which is then towards us being Enlightned by the Earth , and the other part that is turn'd from us , by the Sun. For the Moon doth not only borrow her Light from the Sun , but receives also some weak illustration from the Earth : Because the Earth being an Opake Body , must of necessity reflect part of her received Light ; and forasmuch as the Earth is bigger than the Moon , consequently more Light must be deriv'd from the Earth to the Moon , than from the Moon to the Earth . This is confirm'd by Experience , because this Secundary Light ; as GALILAEUS calls it , after the first Quarter quite vanisheth , by reason of the Moon being too far distant , and without those Bounds to which the reflected Beams from the Earth reach . XIV . The Moon is sometimes Enlightned from the Earth . We know likewise by Experience , that this Light is more perceptible when the Moon is Eastward from us , than when she is West . The Reason whereof is , because in the former situation , the Light is reflected to her from all the Continent of Asia , and part of Africa , which are more proper to reflect the Sun-beams , than those Seas which are towards the West . So that as the Moon doth at some times Enlighten the Earth ; so at other times again , the Earth Enlightens the Moon . XV. What a Periodical and Synodical Lunar Month is . The Moon performs her Revolution in 27 Days and about 8 Hours ; and this time is called the Periodical Lunar Month : And the time that intervenes betwixt the Conjunction of this Planet with the Sun , till the next Conjunction , is called the Synodical Month ; which consists of 29 Days , and about 12 Hours . Wherefore , when on a certain Day there is a Conjunction between the Moon and the Sun , the Moon indeed will return to the same Degree of the Zodiack , at the end of 27 Days and near 8 Hours ; but she will not meet with the Sun there , who by this time will be advanced 27 Degrees further to the East ; so that the Moon will be fain to proceed two Days longer before she can overtake him . CHAP. XXI . Of the Eclipses of the Sun and Moon . I. What an Eclipse of the Sun is . FOrasmuch as the Earth by its Annual Motition , turns round about the Sun ; and the Moon by her Monthly Revolution , is whirl'd about the Earth , it cannot be but that the Earth , Sun and Moon must sometimes meet , and be oppos'd to one another . Whence , if it so happens , that by the Moons intervening betwixt the Sun and the Earth , the Sun becomes obscured by her shadow , this we call an Eclipse of the Sun , because its Light is hindred from being diffused on the Earth . So that the Eclipse of the Sun , is nothing else , but a Failing of Light in some Region of the World , caused by the Diametrical Interposition of the Moon betwixt the Sun and that Country . Wherefore this Eclipse always happens at the Time of the Moons Conjunction with the Sun. II. What an Eclipse of the Moon is . But if the Moon come within the verge of the Earths shadow , and by this means be deprived of the Light it borrows of the Sun , this we call an Eclipse of the Moon . And accordingly , an Eclipse of the Moon is a Failure of Light in the Moon , because of the Diametrical Interposition of the Earth between the Sun and the Moon . For then is the Moon obscured by the shadow of the Earth , and it happens always at the Full Moon , or Opposition : Tho' this Observation be not perceiv'd by all the Inhabitants of the Earth ; but by those only that are in that part of the Earth , which is Diametrically interpos'd between the Sun and Moon . III. An Eclipse of the Moon is either Total or Partial . An Eclipse of the Moon is either Total , or Partial . A Total Eclipse is , when the whole Round of the Moon is cover'd with the Shadow of the Earth : Whereas in a Partial , a part of it only is obscured . IV. A Solar Eclipse may more properly be called an Eclipse of the Earth . Betwixt these two Eclipses we are to observe this considerable difference , that the Failure of Light in the Moon , is caused by the Interposition of the Earth , which really keeps off the Sun's Rays from it , hindring it from receiving its wonted splendour . But no such Defect of Light ever happens to the Body of the Sun , whose Light cannot be the least impair'd , because of the Moons Interposition between him and the Earth . And therefore an Eclipse of the Sun , may with more propriety of Speech be called an Eclipse of the Earth , the Defect of Light being only in Appearance in the Sun , but really and indeed in the Earth , which is then deprived in a greater or less degree of his Light. V. What the Head and Tail of the Dragon i● . We are to observe that , as the way of the Sun , or the Ecliptick , doth obliquely intersect the Aequator in the two opposite Aequinoctial Points ; so likewise the Orb of the Moon is not directly under the Ecliptick , but cuts the same in two opposite Points at Oblique Angles ; and these Points are called the Nodes , or the Dragons Head and Tail. For the clearer conceiving whereof we are to note , that the Ecliptick divides the World into two Parts , whereof that which contains the Northern Pole , is called the Northern part ; as that which contains the opposite Pole , the South part . This supposed , we say that the Dragons Head is one of the Common Sections of the Ecliptick , as well as of the Circle which the Moon describes , when she passeth from the South part of the World to the North ; and the other Section , by which the Moon passeth from the North to the South part of the World , is the Tail of the Dragon . The Orb of the Moon therefore , ABCD , doth not concur with the Sun 's Ecliptick AECF , but intersects the same in two places , at A and C. In or very near which Intersections the Sun and Moon must be , or else no Eclipse can happen . For beyond the Ecliptical Terms GHIK , there are no Eclipses ; because every where else the Moon is either too high towards the North B , or too much depress'd towards the South D ; so that where there is not a Conjunction , or an Opposition of these three Bodies , the Sun , Moon , and the Earth , at the New or Full of the Moon , neither Solar nor Lunar Eclipse can ever happen . VI. The Eclipse of the Sun ever happens at 〈◊〉 New of the Moon . Wherefore we see , that the Eclipse of the Sun can only happen at the New Moon , when the Sun and Moon are in Conjunction . For since the Orb of the Moon only intersects the Ecliptick at two Points or Nodes , she must of necessity be found in one of these before she can cause an Eclipse . And forasmuch as the Sun meets twice only in a Year with the Moon , in or at those Nodes , the Sun cannot suffer an Eclipse more frequently , than about every sixth Month. The Moons motion also from West to East , being not always exactly under the Ecliptick , but deviating something from it towards the North or South , and consequently not moving directly between the Sun and us , it is apparent that no Eclipse can be , but when the Sun and Moon are together in the Dragons Head or Tail , which , as I said , happens but every sixth Month. VII . The 〈◊〉 of the Moon ●●ppens 〈◊〉 at the 〈◊〉 tho' not 〈◊〉 every 〈◊〉 Moon . Accordingly the Eclipse of the Moon happens , when the Earth a , being directly interpos'd between the Moon b or d , and the Sun c , doth by its Conical shadow I h i , hinder the direct Rays of the Sun from reaching any part of the Body of the Moon , as in b and d , or only from illuminating some part of it , as in e and f. The Eclipses of the Moon are only at the Full Moon , that is , whilst the Sun and the Moon are diametrically oppos'd in the Dragons Head and Tail ; because then the Earth comes between them , and by its Shadow does obscure the Moon . Yet it doth not follow from hence , that there must be Lunar Eclipses every Full Moon ; because the Moon having some Latitude , she is often at the time of her Opposition to the Sun , at a considerable distance from the Nodes , whence it happens that the Shadow of the Earth does not touch her ; there being no possibility of an Eclipse , except the Sun and Moon be in the Head and Tail of the Dragon . And forasmuch as the Sun cannot be there above twice in a Year , it is evident , that we cannot have a Lunar Eclipse every Full Moon . VIII . The Cause of a Total and Partial Eclipse . A Total , or Partial Eclipse is caused , when the Luminaries are in Opposition , as in the Lunar ; or in Conjunction , as in the Solar Eclipse , in or near the Nodes , or else at a little distance from them : For seeing that the Axis of the Earths Shadow is always in the Plain of the Ecliptick , it cannot be otherwise , but that when this Axis coincides with the Nodes , the Moon passing that way , or near to it , must be wholly dipp'd in the Shadow of the Earth ; but when more remote , then the Moon must be only in part obscured , as entring only into the verge or brim of the Shadow . And so likewise in the same manner , because the Axis of the Lunar Shadow , the Sun being behind it , doth then appear , when the Moon is in the Ecliptick or Node : Therefore it is necessary , that at that time when it doth not appear less than the Sun , it must cover the whole Sun , which otherwise covers only some part of it ; viz. when the Axis of that Shadow being somewhat turn'd aside from our Sight , a part of the Moon only comes between us and the Sun. IX . A Total Eclipse of the Sun happens very rarely , and when it does , lasts only for a Moment . A Total Eclipse of the Sun is a thing seldom seen ; for the Moon being much less than the Earth , cannot but rarely be so conjoyn'd with the Sun , as to cover its whole Round , and hinder the Light proceeding from it to reach the Earth ; but only so , as to cover some part of it with its Shadow . Besides , forasmuch as the motion of the Sun from West to East is very swift , she makes haste away from under the Sun , and therefore can only obscure it for a very short time . So that tho' we should suppose the Moon to be so conjoyn'd with the Sun , that his Light might appear to be totally intercepted ; yet could not the Failure of Light last above a Moment , seeing that in the next following Moment , some of its Light would be diffused from that part of the Sun's Body , which by that time would be got out of the Shadow . X. Eclipses appear various in various Parts of the Earth . Thus it often happens , that tho' a Total Eclipse be perceived in some part of the Earth , yet in other parts the same is only Partial , and in other again none at all . This will clearly appear in the Scheme or Figure , where the Moon a , being interpos'd between the Sun b , and the Earth c ; it is manifest that the Inhabitants at the Point d will be deprived of the whole aspect of the Sun , because of the interposition of the Moon ; they who dwell at the Point e , will be depriv'd of the one half of it ; whereas no part of the Sun will be obscur'd to them who live at f ; and the same is to be understood of all other the Inhabitants of the Earth , from whom the Moon turns away the Sun-beams more or less , according to their several situations . This acquaints us with the Reason , why a Lunar Eclipse is perceiv'd in one and the same manner , by all those that are in the same Hemisphere , and have the Moon above their Horizon ; but not the Eclipse of the Sun , which appears to some Total , to others Partial , and to others again None at all . XI . Why the Eclipse of the Sun never appears Total to all the Inhabitants of the Earth . For the Moon being destitute of all Light of her own , must needs be perceiv'd alike obscur'd by all : Whereas the Sun , being Lucid of it self , cannot appear destitute of all Light , but only so far as it is cover'd by the Globe of the Moon , which intervenes between the Sun and the Earth ; and forasmuch as the Lunar Globe is less than the Sun , or the Earth , it can no otherwise happen , but that some part of the Earth , to which the Moon appears equal to the Sun , or greater , must be depriv'd of the whole Light of it ; whereas others , to whom it appears otherwise , are but deprived of the Half , or of more or less of its Light , and others again enjoy the whole Light of it . XII . Eclipses of the Sun are less frequent , than those of the Moon . The Solar Eclipses are not so frequent as the Lunar ; for the Body of the Moon , which deprives us of the Sun-beams , being much less than the Earth , which deprives the Moon of Light , it cannot be otherwise , but that the Moon must more frequently meet with the shadow of the Earth , than our Sight meets with the shadow of the Moon . But this is not to be understood of the whole Round of the Earth , but only with respect to some determinate Part of it , as by Example , that place where we live : For otherwise there is no question , that every six Months Solar Eclipses happen in this or the other part of the Earth , and no less frequent than the Lunar Eclipses . XIII . How long the greatest Eclipse of the Sun lasteth . The Duration of Eclipses is not always the same . If it be enquir'd , what the greatest Duration of a Solar Eclipse is ; GASSENDUS in his Astronomical Institution , determines it to be the Space of about 2 Hours . For seeing that the Moon spends a whole Hour from the time that she hath made a beginning of the Eclipse , by touching the Western brim of the Sun , with her Eastern , until the time that the same brim come to the Eastern part of the Sun , and thereby make the midst of the Eclipse ; and because then only the Western brim of the Moon , is advanced to the Western brim of the Sun , which soon after it quits wholly : So that as soon as the Incidence ceaseth , the Emersion begins ; it necessarily follows , that she must spend another Hour , before the same brim can reach the Oriental part of the Sun again , and wholly quitting it , put an end to the Eclipse . XIV . Why the Superiour Planets are not subject to be Eclipsed . The Superiour Planets suffer no Eclipses , when the Earth comes between them and the Sun ; because the Conical shadow of the Earth cannot reach them . Yet those Planets that have any Assistant Stars , are subject to Eclipses by their Interposition , as is evident from Observations about Jupiter and Saturn . CHAP. XXII . Of the Fixed Stars . I. What the Fixt Stars are . THE Fixed Stars are so called , not because they rest without any motion at all , or because they are fastned to the Heaven , as so many Nails , but because , being seated in the Center of their several Vortexes , they always keep the same situation and distance from one another . So that the Fixt Stars are Lucid Bodies , consisting of the matter of the First Element flowing to the Center of the Vortex , and succeeding in the room of the Globuli that recede from thence , giving forth light from themselves , and much differing in Magnitude from each other . II. The Fixt Stars are higher than the Planets Tho' there seem to be an immense distance between us and the Planets , yet is the space that reacheth from the Earth to the Fixt Stars , much greater , because the Planets do sometimes hide the Fixt Stars , which they could not do , if they were not interpos'd between us and them , and consequently lower than the Fixt Stars . Moreover , forasmuch as the Astronomers have not as yet found out any thing , whereby to measure this vast distance , we may suppose it to be as great as we please . III. How the Astronomers find out that the Fixt Stars are higher than the Planets . That the Fixt Stars are higher than the Planets , the Astronomers prove from the Parallax or Commutation of our Sight . They conceive two lines , the one drawn from the Center of the Earth , the other from its Surface , or from the Eye of the Spectator , through the Center of a Planet , and reaching to the Firmament beyond it . That which is drawn from the Center of the Earth , will be highest ; whereas that which is drawn from the Eye of the Beholder is lower and more deprest , unless when they both end in the same Vertical Point . And forasmuch as the Point , in which the First Line is terminated , is accounted to be the true place of the Planet , and the Point in which the other line ends , the Apparent or seen place of the Planet , it is easily apprehended , what the Parallax is , viz. the difference or distance that is found betwixt both these places . Forasmuch therefore as there is no Planet that hath not some Parallax , the Astronomers infer , that the Region of the Fixt Stars is at a greater distance from the Earth than any of the Planets . For there would be no Parallax or change of the Sight , in case any Planet were as far from the Earth , as the Fixt Stars . IV. The Sun is the greatest of all the Fixt Stars as to our sight . The Sun is the greatest of all the Fixt Stars as to us , for that by reason of his nearness to us , he doth more strongly move the Luminous matter ; for there is no question , but that if the Sun were beheld from the Fixt Stars , it would not appear any greater than they do . Yea , GALILAEUS gathers that the Fixt Stars themselves , have greater appearing Diameters , their immense distance considered , than agrees with the common Astronomical Calculations , because if we take away their Beams , the Diameters of the Fixt Stars by this means become much less . V. Some Fixt Stars are higher than others . All the Fixt Stars are not placed in the Circumference of one Sphere , as some have imagined , by giving too much credit to their Senses ; but as the Sun hath a space about it , in which no Fixt Star is contained ; so likewise every Fixt Star must be supposed to be at a vast distance from any other , and some of them at far greater distance from us and the Sun , than others of them . So that the inequality which is discerned to be betwixt the Fixt Stars , will be as much from their greater or less distance , as from the greater or less Bulk of their Bodies . And tho' the Region wherein the Fixt Stars are , appear Spherical to our Eye , yet would it be irrational to undertake to determine any thing concerning the figure of any Body , whose outward and inward Surface cannot be discovered by us . VI. Why the Fixt Stars appear to be in the same plain . For it is notorious , that Bodies of equal bigness , by reason of their unequal distances , appear to be unequal . Now to suppose all the Fixt Stars to be in one Plane , is not so much as probable , neither is there any reason to prove it : for tho' they be at vast distances from one another ( which we boldly do assert ) yet will they seem to be in one and the same Plain , after the same manner as Planets , Fixt Stars and Clouds seem to be in the same Plain , yea , and to touch the very Horizon , because there is nothing interposed between them , and our sight , whereby we may judge of their distance : And I durst lay it down for a general Rule , that all distance vanisheth , where we have no Sense nor Judgment of the intervening Bodies . VII . The Fixt Stars shine with a Light of their own . The Fixt Stars have a light of their own , as we have shewed in the foregoing part of this Discourse , that the Sun hath , whom we take to be one of the Fixt Stars ; there being no other Lucid Body whence he might borrow his Light , in case he had it not in himself . And the same is evident also concerning the rest of the Fixt Stars , from the briskness of their Beams , and their vast distance both from us , and from the Body of the Sun , so that they cannot borrow any part of his Light. For we frequently perceive the Body of the Sun , covered with Spots , which like so many Clouds cover his Face , and by resting the Pressure of the Light , suffer only some languid Beams to proceed from him to us ; and this , as Historians tell us , hath sometimes continued for a whole year together , and hath made the Sun all that while to appear with a pale whitish Light , like that of the Moon : And yet the Fixt Stars , during this time , were never found to have lost any thing of their Light ; which must have followed in case they had received their Light from the Sun. VIII . The Fixt Stars are at too great a distance from the Sun to receive any Light from him . Again , that the Fixt Stars are of a fiery Nature , and like the Sun , shine with their own Light , may be thus proved ; because if the Sun should be viewed from the Fixt Stars , it would appear no greater than one of the least of them ; and therefore if the Sun were removed from us , as far as they are , its bulk would appear so much lessened , as scarcely to be conspicuous . And again , if we should suppose the Dog-Star , to be placed where the Sun now is , it would appear as great and glorious as the Sun now appears to us . Now this vast distance of the Sun from the Fixt Stars , sufficiently proves that it is impossible they should borrow their Light from him . Wherefore we must conclude , that the Light of the Fixt Stars , doth not at all differ in nature from that of the Sun , as consisting only , on their part , in the swift agitation of the matter of the First Element ; and with respect to the Medium , in the motion they communicate to the Globuli of the Second Element , intervening between those Stars and us . IX . Why the Fixt Stars twinckle . All the Fixt Stars do seem to Twinckle , the reason whereof is the strength and briskness of their Rays , whereby they strike upon our Eyes . Which appears from hence , that when we look upon them through a Telescope , their Twinckling is much diminished , the strength of their Rays being much weakned , by passing through the small holes thereof . Another cause of their Twinckling is , because their Vortexes , which on every side encompass our Heaven , are not perfectly round , but have irregular Surfaces , as may be seen in Figure 20 : whereby it happens , that whirling about their Centers , and acting upon our Heaven , the Rays of the Stars come to fall obliquely upon it , and by that means are refracted ; from which Refraction their Scintillation or Twinckling follows . The said Scintillation may also be caused by the agitation of Vapours and Exhalations in the Air ; as we see little Pebbles that lie without any motion at the bottom of a River , do seem to shake , by reason of the continual flowing of the Water . X. How it comes to pass that the Stars do not appear in their own places . For the same reason also it is that the Fixt Stars , are not seen by us in the same places , wherein they are indeed , but as if they were placed in the surface of our Great Vortex , which hath the Sun for its Center . And here they cannot appear in their own places , because the Surfaces are in a manner , never so disposed , that the Rays which pass through them , from these Stars to the Earth , do meet with them at Right Angles ; for when they meet with them obliquely , it is necessary , according to the Rules of Refraction , that they must bend a little , because they pass more easily , by one of the sides of these surfaces , than by the other . XI . The Fixt Stars seem to move . Tho' the fixt Stars are contained in their Vortexes , and always keep the same distance from one another , yet they seem to move , not only by a Diurnal motion , by reason of the Earths Revolution about its own Center ; but also by another motion , according to which every Star seems to encrease its Longitude ; ever since that time , when HIPPARCHUS 130 years before Christ , observed that the Fixt Stars had a motion like the Planets , from West to East ; having taken occasion for making this Discovery from some observation of TIMOCHARIS and ARISTILLUS . For when TIMOCHARIS , amongst other Stars , had observed , that the Spica Virginis , was almost 8 degrees antecedently distant from the point of the Autumnal Aequinox , He found the same Star to be only removed six degrees from the said point . From which observation he concluded , that they move by this motion about one degree , in the time of 100 years ; and consequently that the Fixt Stars also had a motion of their own . XII . What the cause is of this appearing motion . In order to the Explication of this appearing motion of the Fixt Stars , we are to suppose , that the Axis of the Diurnal motion of the Earth , doth not accurately keep the same Parallelism in its Annual Revolution which it had before , but somewhat turns aside from the same , after the running out of a great many years ; and tho' this Deflexion from the Axis of the Ecliptick be insensible ; yet the Earth , by this Reeling motion , in the space of many thousand years , is the cause that its Poles describe a small Circle from the East to the West . And since that according to this Hypothesis we conceive the Aequator of the Earth to answer to different parts of the Heaven , it follows that the Coelestial Aequator must also change its place , and cut the Ecliptick at divers Points , from East to West . And because the Longitude of the Fixt Stars is computed from that time , in which these two Circles are intersected , it cannot be , but that the said Longitude must seem to be encreased every hundred years . XIII . Why the Poles of the Earth are by little and little obliquely turned the contrary way to its Annual motion . This will appear more manifestly , if we suppose that the Declination of the Axis of the Earth from the Perpendicular to the Plain of the Ecliptick , proceeds from the Striate Matter of the First Element ( as shall be explained more at large in the sixth Part ) which coming from that part of the Second Heaven , which is 23 degrees distant from the Poles of the First Heaven , and passing through its Poles , doth incline it to so many degrees . But because that part of the Second Heaven , which is fit and dispos'd , to drive the Striate Matter into the Poles of the Earth , and by this means to sway them obliquely , is insensibly turned round from 1 to 2 , and from 5 to 6 , and so on , according to the trace of the Polar Circles 1 , 2 , 3 , 4 , and 5 , 6 , 7 , 8 , which in this our age , are 23 degrees distant from the Poles of our First Heaven AC ; whilst , in the mean time , the Earth , together with the rest of the Planets is moved in its Annual motion , according to the Succession of the Signs of the Zodiack from Aries ♈ to Taurus ♉ , and from Taurus to Gemini ♊ , and so on , by a contrary Motion to that of the Second Heaven , that communicates the Striate Matter to the Earth ; by this means it comes to pass that the Poles of the Earth are by little and little turn'd about , respecting those Polar Circles at this time , with an inclination of 23 degrees , contrary to the course of their Annual Motion : So that the Poles of the Earth , which were directed to the parts of the Polar Circles marked NO , are now directed , to those parts of them that are marked LM . Neither only is that part of the Second Heaven , which sends the Sriate Matter to the Poles of the Earth , and directs or inclines them according to the trace of the Polar Circles 1 , 2 , 3 , 4 , and 5 , 6 , 7 , 8 , swayed about , but it is also lifted up to the Poles AC , of our Heaven , and is again by them , in that wresting about , softly depressed . And this is the Cause , why the Axis of the Poles of the Earth I , doth now decline 23 degrees and 30 minutes , according to the magnitude , for Example , of the Line LM , or NO , from the Poles AC , of our Heaven , whereas formerly this Declination was of whole 24 degrees . XIV . The Longitude of the Fixt Stars may be unequal . Wherefore altho' the change which happens to the Longitude of one Star , cannot but be like to that which happens to another ; yet it is not necessary , that all the Fixt Stars together , should throughout all Ages obtain the same Longitude , since it is possible that this Reeling of the Earth , may be more sensible in this Age than in another . And therefore the Irregularity of the Apparent motion of the Fixt Stars , may be easily explained , by supposing , that the Reeling or Titubation of the Earth is not Regular ; and that in some Ages it deflects somewhat more , and in others less . XV. How the Change of the Declination of the Eclitick is made . We may likewise easily comprehend , that the apparent Ecliptick , must somewhat alter its declination , provided we conceive , that during this Titubation of the Earth , its Axis inclines towards the plain of the Ecliptick , somewhat more at one time than another ; for thus the Aequator of the Earth , determines that of the Heaven , in parts that are at such different Distances from the Ecliptick . Now this Reeling motion of the Earth , follows necessarily from its being placed in the Vortex of the Sun : For it would be a great wonder , if being plac'd in the midst of a Liquid matter , as it is , it should continue there many Ages , without admitting any change in its situation . XVI . Why the Fix'd Stars are not seen in the Day time . The Fix'd Stars are not seen by us in the day time , because the impression of the Sun's Brightness is so strong on our Eyes , that the Light of the fix'd Stars cannot make it self perceptible . The case is the same , as when our Ear being stun'd with some great Noise , cannot perceive any low or weak sound : Or , as a hot Hand cannot distinguish the less sensible warmth that is in another Subject . Yet doth not this hinder , but that a Man plac'd at the bottom of a Well , may perceive the Light of the fix'd Stars ; because there his Eye is not so strongly affected by the splendour of the Sun ; neither doth any thing hinder a Star that is above the Horizon , from freely transmitting his Rays . CHAP. XXIII . Of the Asterisms and Constellations . I. The Number of the fix'd Stars . THo' the Fix'd Stars be dispers'd throughout the immense Space of Heaven , and can no more be numbred than the Sand on the Sea-shoar ; yet the Astronomers have been pleased to determine a certain Number of them , which they have discover'd by the help of their Telescopes , as being nearer to us , and more in view . Of these they count 1022 ; which they have divided into 6 Classes or Ranks . II. The difference of the Magnitude of the Stars . The greatest Stars of all are called , Stars of the First Magnitude ; and of these there are 15. The next to these are called , Stars of the Second Magnitude , of which there are 45. After these follow those that are of the Third Magnitude , being 208 in number . Of the Fourth Magnitude , there are 474. The fifth Classis of Stars , are those of the Fifth Magnitude ; and of these there are 217. The sixth Rank or Order of Stars contains 49 , and are the least of all . To which , for the making up of the Number , 9 Stars called Obscure , are added , and 5 called Misty or Cloudy , because they can hardly be perceived . III. All the Stars that belong to one of these Orders , are not equal . It is to be observ'd , that all the Stars that are of one Classis , do not appear to us of the same Bigness and Brightness ; but in every one of these Divisions , there are some that are Greater , some Less , and some of a Midling-size , between both . For the Dog-Star is the biggest of them all ; and tho' the Lyre or Harp be of a very conspicuous Magnitude , yet can it not be compared with it ; and the same may be said of the others Orders or Divisions . For the Eye of the Bull doth far exceed the Lions-Heart , and the Virgins Ear of Corn. IV. How the Stars come by their several Names . To the end these Stars might be the better distinguish'd and remembred , the Astronomers have reduc'd them to certain Constellations , and affixed some Signs or Figures to them , according as they imagin'd them to have some resemblance or agreement with such and such Animals or things . V. The Number and Character of the Constellations in the Zodiack . The Astronomers reckon up 48 of these Figures or Constellations , whereof some are in the Zodiack , others without it in the Northern and Southern Hemisphere . In the Zodiack are 12 Constellations : Aries , or the Ram , express'd by this Character ♈ , as representing the Head and Horns of a Ram : Taurus , ♉ , the Bull , the Head and Horns of an Ox : Gemini , or Twins , ♊ , two Bodies , with their Arms and Legs twisted together : Cancer , the Crab , ♋ , the Claws of a Crab , with their Retrograde going : Leo , the Lion , ♌ , representing a Lion's Tail : Virgo , the Virgin , ♍ , resembling a Wing , or the folded Gown of a Damsel : Libra , the Balance , ♎ , the Beam of a pair of Scales : Scorpius , the Scorpion , ♏ , the Body and Tail of a Scorpion : Sagittarius , the Archer , ♐ , an Arrow , apply'd to a Bow : Capricornus , ♑ , the Head and Horns of a Goat , with the Tail of a Fish : Aquarius , the Waterman , ♒ , the pouring of Water out of a Pitcher : Pisces , the Fishes , ♓ , two Fishes tied together with a String . VI. Each Sign contains 30 Degrees . The Astronomers attribute to each Sign of the Zodiack 30 Degrees , tho' the Asterisms themselves be unequal , some of them being shorter , and others longer : For if 360 be divided by 12 , the result will be 30. VII . What are the most conspicuous Stars in every Sign , and first in Aries . In ARIES 3 Stars are most conspicuous , 2 in the left Horn of the fourth Magnitude , and 1 of the third , between the Horns ; which Tycho calls the Bright Star in the top of the Rams Head. VIII . What in Taurus . The most considerable Star in the Sign TAURUS is placed in his left Eye , being a Star of the first Magnitude , and is therefore called the Bulls Eye . Near to it are other 5 Stars , which are called Hyades : And those 6 , formerly 7 Stars , that appear on the Back of the Bull , are called Pleiades and Vergiliae , in the midst of which is a Star of the third Magnitude , commonly called the Bright Star of the Pleiades . IX . What Stars are in Gemini . There are 2 Principal Stars in GEMINI of the second Magnitude , whereof that in the North Head of the Twins , is called Castor ; as that in the South , Pollux . There is also another Star of the same Magnitude in the right Foot of Pollux , towards Orion . There is also one of the fourth Magnitude , called Propus , because it is placed near the left Foot of Castor . X. What in Cancer . In CANCER , scarce any Stars appear , besides one of the third Magnitude , near to the right Claw , and 3 others of the fourth , 2 whereof are most noted , whereof 1 stands towards the North , the other towards the South . XI . What in Leo. The LION is adorned with divers bright Stars , 2 whereof are of the first Magnitude . That which is seen in his Breast , is called the Lions Heart , or Regulus ; and that in his Tail , the Lions Tail. Besides these there are 2 other , the one in his Neck , the other in the utmost part of his Back ; to which , if the next Stars in his Loyns be added , they , together with those of the Heart and the Neck , will represent the Figure of a long Square . XII . What in Virgo . In the VIRGINS left Hand is an Ear of Corn , in which there is a Star of the first Magnitude , commonly called , the Virgins Ear of Corn. There are also other Stars of the third Magnitude , disperst all along the Virgins Body . XIII . What Stars are in the Scorpion . SCORPIUS , besides 2 Stars of the second Magnitude plac'd in the further part of his Claws , and 2 more of the third Magnitude in his Tail , hath another in the midst of his Body , called the Scorpion's Heart , plac'd between 2 Stars of the fourth Magnitude . XIV . What in Libra . LIBRA consists of 2 very bright Stars , which are called the Scales . XV. What in Sagittarius . In SAGITTARIUS are 4 Stars more considerable , which being plac'd on his Right shoulder , constitute a Trapezium or Table ; besides 3 or 4 that do somewhat resemble a Bow : Beyond the midst of which , there is another of the third Magnitude , which represents the form of an Arrow . XVI . What in Capricorn . The Chief Stars in CAPRICORN are 4 of the third Magnitude . There are 2 in his Tail that have a greater lustre than the rest ; and two other in his Horns , the uppermost whereof hath a small Star joyned to it . XVII . What in Aquarius . In AQUARIUS , the most conspicuous Stars are some of the third Magnitude about his shoulders , with 4 others about his right Hand ; the one whereof is , as it were , plac'd in the midst of a Triangle , constituted by the other 3. And there is another in his right Hand of the third Magnitude ; besides which there are many other of the fourth Magnitude , and more especially one at the end of the pouring forth of the Water , which is of the first Magnitude . XVIII . What in Pisces . The Constellation PISCES consists of many small Stars ; there being but few amongst them that are as big as those of the fourth Magnitude : And tho' these Fishes are at some distance from each other , the one in the Neighbourhood of Aquarius , under the Neck of Pegasus , and the other near to the Ram or Aries , under the Breast of Andromeda ; yet they are tied together with a kind of loose Riband , which is also adorn'd with several Stars of the first Magnitude . XIX . The Northern Constellations , without the Zodiack The Constellations without the Zodiack , are either Northern or Southern . The Northern , which appear in our Hemisphere , are 21 ; the particular account whereof here follows , beginning with that Constellation which is next of all to the Pole. 1 The Little Bear. And this is URSA MINOR , the Lesser Bear ; which consists of 7 Stars , 4 whereof represent a square Figure ; whereof the uppermost in the Neck of the Bear , is of the second Magnitude ; another lower than it , of the third ; a third on the Back , of the fourth ; and the last in the Back also , of the fifth . The hindermost and brightest of the other 3 , is called the Pole-Star , because it is nearer to the Pole of any other . 2 The Great Bear. URSA MAJOR , the Greater Bear , consists likewise of 7 Stars , whereof the 4 that represent a square , exhibit so many Wheels , and the other 3 , the Beam of the Wain , and the Oxen or Horses that draw it ; and therefore was called by the Ancients , Plaustrum majus , or the Greater Wain . 3 Bootes . BOOTES , the Herdsman , or rather the Driver of the Oxen , called also Arctophylax , the Bearward , consists of many Stars of the third Magnitude , plac'd in the shoulder , back and knees of this Figure . But one of them is more famous than any of the rest , placed between his Thighs , on the rim or edging of his Coat , being of the first Magnitude , and is called Arcturus . 4 The Dragon . The DRAGON consists of many Stars , but none of them greater than those of the third Magnitude ; only there are 2 in the Head of it , that are brighter than the rest . 5 The Crown of Ariadne . The CROWN of ARIADNE , plac'd at the Right shoulder of Bootes , represents a half Circle , compos'd of 5 Stars ; whereof 3 are of the fourth Magnitude , one of the fifth , and another of the second , which is called the Bright Star of the Crown . 6 Engonasi . ENGONASI , the Man , according to some Hercules , Kneeling , comprizeth several Stars all of the same Magnitude ; of which one especially is more conspicuous in the Head of this Figure , for its being of an equal size , with another Star like it , found in the Head of Ophiuchus . 7 Lyra , or the Harp. LYRA , the Harp , which by some is called the Falling Vultur , hath the most eminent Star of the first Magnitude , next to the Dog-Star ; besides which it contains some few other Stars , 2 whereof are of the second Magnitude . 8 The Swan . The SWAN is an illustrious Constellation within the Milky-Way , resembling the Form of a Cross ; and hath a very notable Star of the second Magnitude . 9 Cepheus . CEPHEUS hath his Head pointing to the Swan , and his right Foot standing on the Tail of the Little Bear. It contains but few bright Stars , besides 3 of the third Magnitude , one in the Right shoulder , another in his Girdle , and a third in his Right knee . 10 Cassiopeia CASSIOPEIA hath 5 Stars of the third Magnitude , over against the Great Bear , the least being in the midst of them ; 3 of these are on the outside , one of them being called the Bright Star of the Chair ; another upon her Breast , called Schedir ; the third near her Flank ; all which represent the Figure of a Triangle . 11 Perseus . PERSEUS is plac'd between the Feet of Cassiopeia and the Bull , the most bright Star of which Asterism , that on the Back , is of the second Magnitude . It hath also another famous one of the third Magnitude , which being placed in the Head of Medusa in the Left hand of Perseus , is therefore called the Head of Medusa , and the other 4 are call'd Gorgons . 12 Andromeda . ANDROMEDA is an Asterism under Cassiopeia , on the Left-side of Perseus ; very remarkable , because of 3 Stars it hath of the second Magnitude ; one whereof is on the Left Foot , above the Triangle , the other in the Girdle , above the Fishes ; the last in the Head , which is common to her and Pegasus . 13 Deltoton , or the Triangle . DELTOTON , or the Triangle , consists of 3 Bright Stars of the fourth Magnitude , one whereof is at the top , and the other 2 at the Basis of it , with another Star of the fifth Magnitude , near to it . 14 Auriga . AURIGA , the Wagoner or Wain-Driver , hath a Star of the second Magnitude in the Left Foot , where there is also another of the fourth Magnitude . But the most noted of them all is a Star of the first Magnitude very illustrious , on the Left shoulder , called Capra , the Goat . 15 Pegasus . PEGASUS , or the Flying-Horse , is a notable Constellation , by reason of a large square composed by 4 of its Stars of the second Magnitude . Besides which it contains other 3 of the third Magnitude , the one in the Knee , the other in the Neck , and the third in the Opening of the Mouth , which is therefore call'd the Mouth of Pegasus . 16 The Dolphin . The DOLPHIN , seen between the Constellation of the Colt and the Eagle , has 10 Stars , whereof 5 are of the fifth Magnitude : The other , except that which is in the Tail , do constitute the Figure of a Lozenge . 17 The Arrow . The ARROW hath 5 Stars , of which , that at the Point is of the fourth Magnitude . 18 Eq●ule●s , or the Colt. The COLT is nothing else , but as it were the shadow of the Head of Pegasus , in which are seen 4 Stars , all of them of the fourth Magnitude . 19 The Eagle . The EAGLE is considerable for 3 Stars , representing the situation or position of Orions Girdle . The 2 that are at each end , are only of the third Magnitude ; as likewise 2 others at the end of his Tail : The Star which is in the middle is of the second Magnitude , and out-shines the rest , being therefore call'd , the Bright Star of the Eagle . 20 Serpentarius . SERPENTARIUS OPHIUCHUS , or the Serpent-Bearer , is a great Asterism ; for its Head is near to the Head of Hercules ; its Feet rest upon the Scorpion ; the Head of the Serpent reacheth to the Northern Crown , and its Tail to the Eagle . It s greatest Star is only of the third Magnitude . Yet there is one of these that is very considerable by the right Ham , between the Scorpion and Sagittary , which in the Fourth year of this Century was accounted amongst the Great Stars . 21 The Serpent of Ophiuchus . The SERPENT of Ophiuchus , is famous for several Stars of the third and fourth Magnitude , in the middle Joynt of the Neck , next to that Hand in which Hercules holds his Club. XX. The Southern Constellations , without the Zodiack . The Southern Signs are 15 in Number , without the Zodiack . 1 The Whale . The first is the WHALE , situate under the Fishes and the Ram , having a vast wide Mouth , in the midst whereof is a Star of the first Magnitude , the Bright Star of the Jaw-bone of the Whale ; and hath another of the same Magnitude answering to it , in the midst of the Point of his Tail ; besides other Stars over his whole Body , of the third and fourth Magnitude . 2 The River Eridanus . ERIDANUS is a long and winding Asterism betwixt Orion and the Whale . The end of which , towards the South , is invisible to us . 3 The Hare . The HARE , besides other of the Stars whereof it is composed , hath 4 of the first Magnitude , and other 4 smaller ones in his Ears . 4 Orion . ORION is a Constellation , adorned with many bright Stars . Of these , 2 principal ones are in his Shoulders , 3 in his Girdle , which are called Three Kings ; 1 in his right Knee , and another in his left Foot , called Rigel . 5 The Great Dog. The GREAT DOG hath not his equal for Brightness , and is commonly call'd Sirius , as being supposed to Dry all things . About his right Feet he hath some Stars of the third Magnitude . 6 The Little Dog. The LITTLE DOG riseth before the Greater , and is , as it were , the Harbinger of his Rising . Besides the Star which is in his Neck , of the third Magnitude , he hath another Bright one in his Thigh of the second Magnitude , called Procyon . 7 The Ship A●go . The Ship ARGO hath but a few Stars that are conspicuous , except it be about the Mast . In its Helm is a very noted Star , called Canopus . 8 Hydra . HYDRA , the Hydre , a Water-Serpent , is a long extended Asterism ; for with its Head it toucheth the Claws of the Crab , and its Tail is near to Libra , or the Ballance . It hath a very bright Star in its Breast of the first Magnitude , called the Heart of the Water-Snake . 9 Crater , the Bowl . The BOWL , or Cup , is placed upon the Middle part of the Hydra , having some Stars of the fourth Magnitude , representing an half Round . 10 The Crow . The CROW is very remarkable , by reason of the Table in it , consisting of 4 Stars , whereof 3 are of the third Magnitude , and another of the fourth . 11 The Centaur . The CENTAUR , besides 14 visible Stars , hath others that are not conspicuous to us ; whereof 1 is of the first Magnitude , at the right Fore-foot of the Horse . In his hind Legs are 4 Stars , which represent a very remarkable Cross . The Uppermost and Lowermost are of the second Magnitude ; but the Right and Left of the third . 12 The Wolf. The WOLF , or Wild-Beast , doth with his Head reach the middle part of the Scorpion ; it hath no Stars bigger than of the fourth Magnitude . 13 The Altar . The ALTAR , or Censer , is for the most part hid from us under the bending of the Scorpions-Tail . It hath no greater Stars , than of the third Magnitude . 14 The Southern-Crown . The SOUTH-CROWN hath one very notable amongst the rest , of the third Magnitude ; and is the same which is called by some Uraniscus , or the Petty-Heaven . 15 The South-Fish . The SOUTH-FISH contains many Stars , and those of the fourth Magnitude , under the left Leg of Aquarius . In its Mouth it hath a Principal one of the first Magnitude , called Fomahant . XXI . What those Stars are that are Unformed . Tho' the Constellations of the Zodiack , together with the North and South , are reduced to the Number of 48 ; yet we are to know that the Astronomers could not comprize them all into Figures , but were fain to leave some in the Intervals of them , which they called Unformed , as being comprehended in no Figure or Image . XXII . What the Galaxy , or Milky-way , is . The Astronomers also make mention of the Galaxy , or Milky-way , which is nothing else but a vast multitude of thick-set Stars , that by their weak Light represent the appearance of Milk in a clear Sky , as the Telescope hath informed us . Whereby ARISTOTLE is convinc'd of a manifest Error , who suppos'd the Milky-Way to be a Meteor ; who yet therein is to be pardoned , because he wanted the Helps that we have to discern it better . XXIII . How the Sun , or any Planet , is said to be in a Sign . We are to observe , that when that the Sun , or any Planet , is said to be in a Sign : As for Example , in the Ram , or in the Bull ; the meaning thereof is , that it is plac'd under it , or that it intervenes , or is intercepted between our Eye and that Sign . For it is certain , that the Zodiack , and its Signs , are at a vast distance from the Planets . But this way of speaking hath obtain'd , because the Planets appear to us , as if they were in the Region of the fix'd Stars . For our unassisted Sight cannot discern which of the Stars are farther from , or nearer to us . Hence it is , that because we know that the Planets are nearer to us than the Stars , we understand them to be so placed , as to be between us and the Signs . But the Stars that are without the Zodiack are said to be in that Constellation , or rather to belong to it , between which and the next Pole of the Zodiack they are placed . CHAP. XXVI . Of the Influence of the Stars , and of Judicial Astrology . I. The sense o● the Question stated . IT is a Question frequently handled by the gravest Authors , Whether the Stars act upon these Inferiour Bodies ; and whether the Things that happen here on Earth do depend on their Influences . Or to speak more plainly , Whether the Stars be the Cause of those Effects we see in this Sublunary World ; or at least , contribute something to their Production . For the better understanding of this Question , it will be necessary to examine the Virtue and Power of the Stars , and thence gather their manner and way of acting . II. The Sun influenceth this sublunary World. There is no doubt , but that the Sun concurs by a real influx to the Production of Terrestrial Bodies ; yea , if we give heed to his Virtue , we shall find him to be the only , or at least the Principal Cause of all things that are generated in the Earth ; for the Growing of Plants , the Nourishment of Trees , the Ripening of Fruit , and the Springing of Corn , are all to be referr'd to the Sun , by whose Heat they are cherished , grow , and are brought to perfection . III. An Objection against the Virtue of the Sun. If you say , That many things happen in the Earth which cannot be imputed to the Sun ; as Cold and Moisture , which require a Cause distinct from that of Heat . For how can Heat be conceiv'd to be the Original of Cold ? Or , how can the Sun , who is of a fiery Nature , produce Moisture , since the Natural effect of Fire is to dry , and deprive a Body of all Moisture ? And therefore the Sun can only be said to be the Cause of some particular Effects . IV. Answer . I Answer , It is true that Cold and Moisture do not proceed from the Sun , as their productive Cause ; yet doth not this contradict their proceeding from the Sun accidentally . For as his presence drives away the Cold , and suffers it not to prevail on the Earth ; so his absence suffers it to prevail , and exposeth Terrestrial Bodies to its constriction . In like manner , tho' Moisture doth not descend from the Sun ; yet because the same abounds in the Earth , and that the Sun doth not always elevate the same into Vapours , therefore he may be said to be an Accidental Cause of it . V. The Sun is the General Cause of all Effects produced in the Earth . The Sun therefore is to be considered by us as a General or Universal Cause , which every where diffuseth its Beams ; yet it happens by Accident , that he illuminates one part of the Earth more than another : As it is accidental to Fire , that this or the other thing comes near to it , to be heated and cherished by it , or not . And hence it is , that all that variety , which we see in Nature , doth not so much proceed from the Sun , as from the various situation and disposition of Bodies . For the reason why in one part of the Earth it is Spring , in another Autumn , in a third Summer , doth not proceed from the Sun as a Special Cause , but only as a General , the Sun being always the same , and equally diffusing his Heat . For that it is now , suppose , Summer with us , by the Sun-beams falling more directly upon us ; this is owing to that Part of the Earth wherein we live , whose situation is so directed towards the Sun , as to receive his Beams more directly , at the very same time that it is Winter with our Antipodes , to whom the Suns-beams are obliquely directed . VI. The Planets contribute nothing to any sublunary Effects . I know that some Philosophers refer the Cause of this diversity to the Planets , as supposing Saturn to be Cold ; Mars , Hot ; Venus , moderately Warming ; Mercury , Various ; the Moon , Cold and Moist . But these I take to be no more than meer Fictions , since we perceive no Cold from Saturn , nor Heat from Mars ; and so from the other Planets : Because it cannot be , that we should feel or perceive any of these Qualities , but that at the same time all the other Inhabitants of the Earth must perceive the same , seeing that they are sensible of these Vicissitudes of Seasons , as well as of the Sun's Heat ; and therefore these Changes depend on the various position of the Parts of the Earth . As we see , that the South-Winds , which produce Warm Weather in the midst of Winter ; and North-Winds , which cause Cold in Summer , do not arise from the Aspects of the Planets , since the same Aspects are over the whole Earth , and yet we do not find the same Winds every where ; so that they proceed only from the various disposition of the Regions of the Earth . VII . The Fix'd Stars send down no Influences upon thes● Inferiour things . Neither do the Fix'd Stars seem to dispense any Influences to us here below , because their vast distance hinder them from producing any Effects here : For tho' by their Light they may put the subtil Matter contain'd in the Pores of the Air into motion , and by means thereof agitate other grosser Matter , which thereby may produce a sensible Effect ; yet because we know of no other Virtue that is in them , whereby they might act upon these Inferiours , save only their Light , we cannot attribute to them any Effects , besides those that proceed from Light : And forasmuch as the Light of the Sun is incomparably greater than that of the Fix'd Stars , we are to attribute all Natural Effects to the Light of the Sun , as the General and Primary Cause of them . VIII . The Fix'd Stars do not always Rise and Set at the same time ; and yet we find that the General Changes of Seasons in the World keep the same time . This Opinion may be further confirmed , if we consider that the Fix'd Stars do not Rise and Set now at the same time as formerly ; but because of their turning round from East to West , they Rise now almost a whole Month later than of Old : And yet the Seasons and General Changes that are in the World still observe the same Tenour , and correspond with the Suns Course through the Zodiack . For the Dog-Days , by Example , or that great Heat , which in old Times was perceived about the midst of July , still continues about the same term , neither is changed to the midst of August , at which time the Dog-star , which they make the Cause of its Heat , doth now Rise . Neither can we suppose , that 6000 years hence , this Heat will be removed to the midst of November , at which time the Dog-star will then Rise . Besides , if the Heat we perceive in Summer be to be ascribed to the Dog-star , how comes it to pass that at the same time the said Star is almost 40 Degrees distant from the Sun ? Since it might be rather expected it should display its Heat in the Winter , when it is conjoyn'd with the Sun , viz. about the 29 th of October . IX . The Cause of the great Heat in Summer . The Cause therefore of these great Heats is , because the Sun at that time sends down his Beams more perpendicularly upon us , and continues longer above our Horizon ; and forasmuch as this perseveres for some Days after the Solstice , during which time new degrees of Heat are still added , it cannot be otherwise , but that the Heat during that time must be increased . X. The Moon produceth no Effects upon the Earth . Neither doth the Moon , tho' she be so near unto us , produce any Effects here below . I know that several Effects are attributed to her by some ; as the Breaking or Splitting of Stones , and the increasing of Oisters , and other shell-Fish , at the Increase of the Moon , and their decreasing at the Wane of the Moon ; as likewise that the Bones of Animals , at the Full-Moon , are full of Marrow , whereas at the New they are almost empty . XI . What is the Cause why Stones are broken . But all these Effects may be with more Truth attributed to other Causes , than to the Moon . For as to the breaking of Stones , the same may with more Reason be attributed to the Sun , than to the Moon ; seeing it is certain , that some Stones , after many years lying expos'd to the Sun , have been calcined . And therefore seeing that the Sun's beams reach the Stones , as well as those of the Moon , it seems very reasonable that this Effect should rather be imputed to the stronger , than the weaker Agent . XII . The increase or decrease of Oysters , doth not proceed from the increase or decrease of the Moon . So likewise it is a Popular Error to imagin , that Oysters and other shell-Fish , are bigger and fuller at some times of the Moon , than at others : For tho' they are sometimes bigger than at other times , yet is not this to be ascribed to the Moon , but rather to Chance , because they have not had sufficient Food , or because the tossing of the Sea hath forced them to some Evacuations . This is apparent in those Fishes which are taken in the same place , and in the same day : For those which are caught in a Net , and immediately taken out thence , are fuller Bodied and better Fed , than those which having been long kept up , have lost much of their flesh by striving to get out . The original therefore of this Error hath been , for that some have taken that to be caused by the Moon , which was meerly fortuitous . And accordingly we find , that indifferently at any time some Oysters are found to be fat and full , and others lean and poor . XIII . The Cause why more or less Marrow is found in the Bones of Living Creatures . And the same may be said of the Marrow that is found in the Bones of Animals : For several who have examin'd the matter , have found that there is no more Marrow in the said Bones , at any one precise time , than at another ; but that the want or defect thereof sometimes is caused , by want of Food , or for that the Beasts have been tired by long Journeys before they were kill'd . XIV . What Judicial Astrology is , and of how many ●●rts . Astrology is an Art , which foretells future things from the motion of the Heavenly Bodies , and their Aspects to one another . And is therefore called Judicial , because from these it judgeth of the Events of things . Astrology is twofold ; the one is that Art , which from the position of the Stars at the time of Birth , judgeth of the Inclinations and Tempers of Men , whether they will be Passionate , Melancholy , Wise , Venereal , &c. because the Hour of their Nativity was accompanied with such or such Aspects of the Stars , which have a Virtue of causing the Gall , Melancholy , or Spirits to abound . The second kind of Judicial Astrology is that Art , which from observing of the Horoscope , judges of Future Events , Children , Manner of Life , Marriage , Honours , Misfortunes , Losses , &c. XV. Who were the first Professors of it . This Judicial Astrology was first cultivated by the Chaldaean and Babylonian Philosophers , who not only affirmed that they could Foretel Future Events from the Aspects of the Stars ; but also boasted that by them they could discover the particular Actions of Men , and the special Events of their Lives . But that both the one and the other of these are vain and false we prove as follows : Reasons against Judicial Astrology . First , Because the Astrologers had no exact knowledge of the Virtues of the Stars , no not of such as were most Notorious . Secondly , Because they were ignorant of the Nature of most Stars , which might variously alter or hinder the operations of those Stars they knew . Thirdly , Because no sufficient Reason can be given , why Schemes for Nativities are erected from the point of Birth , rather than from that of Conception . Fourthly , Because the Astrologers themselves own , that they have no Principles whereby they might be informed , that the Stars have such Virtues as they assign to them , and that consequently their Predictions are not any deductions from Premisses , but the Dreams of Idle men . XVII . Astrologers can have no certain Experience . Besides , how can they be assur'd of the certainty of the Events they pretend to guess at ? Not by Experience : For who will conclude that it will lighten , for Example , upon the Kings entring into St. James's Park , because once it hapned so ? Or that some King will dye at the Appearance of a Comet ; because it hath been found , that upon the Appearing of a Comet some Prince hath died ? And much the same Evidence the Astrologers have for their Predictions , since it is but once in many thousand years , that the Stars are found in the same position . XVIII . What happens to one part of the World cannot be brought as an Argument to prove that the same will happen in another part . But let us grant the Astrologers , that some Changes have been observ'd to come to pass in certain places of the Earth , under such Constellations ; yet can these only be of use to those Countries where they hapned : Seeing it is most certain , that the same Fair weather , or Tempests , do not happen to all parts of the Earth at the same time : For we see it Rain in one part , whilst it is Fair weather in another . And thus the Dog-star , which most suppose to be Hot by Nature , and to be the Cause of the greatest Heat when it Riseth in July , is notwithstanding a sign of Cold to our Antipodes , and to those that live in the South-part of the Earth ; because they at the same time that this Constellation Riseth , together with the Sun , and we feel the greatest Heat , experience the greatest Cold : Notwithstanding that it is then directly over their Heads , and sends down its direct Rays upon their Country . XIX . The Conclusion . Conclude we therefore , according as we have said at the Beginning , that the Sun is the General Cause of all the Effects that happen in this Sublunary World , forasmuch as by his presence he is the Cause of Heat , and by his absence of Cold ; and that all the rest of the Stars or Planets , cannot be the Cause of any Alterations in these Sublunary things . Book . 1. Part. 6. Chap. 1. G. 〈…〉 I Kip To the Right Noble Henry Duke of Beaufort Marquess and Earle of Worcester , Baron Herbert of Chepstow , Raglon & Gower , Lord Leivtenant of Wales and the Marshes , and of the Countyes of Glocester , Hereford and Monmouth , and of the Citty and County of Bristol , Lord Warden of his Ma t ys . Forest of Deane , and Constable of the Castle of St. Briavels , Knight of the most noble order of the Garter , Gentleman of his Ma t ys . Bedchamber , and one of the Lords of his Ma t ys . most Honourable privy Councell &c. a. to King Charles and King Iames the Second . This Plate is humbly Dedicated by Richard Blome . The Sixth Part OF THE INSTITUTION OF PHILOSOPHY . OF The Four Great Bodies , Viz. THE EARTH , THE WATER , THE AIR , and FIRE ; AND OF The Mixt and Compound Bodies , which arise from them ; AS ALSO OF METALS , and METEORS . CHAP. I. Concerning the Original of the Earth , its Parts and Figure . I. What the Earth is . THE EARTH is a congested Mass of the greater Particles of the Third Element , having Irregular Figures , and by Rest clinging together . II. The Formation of the Habitable Earth . But , forasmuch as by the Name of EARTH , we commonly understand the whole Globe which we Inhabit , it will be a fit place here to speak of its Original , and to describe how at first it might have been form'd , had it so pleas'd GOD : Let us imagine therefore , that it was made at first only of the Matter of the First Element , being like unto the Sun , tho' much less than it ; and that it had a vast and peculiar Vortex in the Center whereof it was seated . But that by the clinging together of the less Subtil Parts of the First Element , they were changed into the Matter of the Third Element , which gathering together produced dark Spots about its Surface , like to those that are continually generated about the Sun , and again dissolved . Upon the continual Dissolution whereof , the remaining Particles of the Third Element , being scatter'd through the Neighbouring Heaven , made there a vast Mass of Aether , which being afterwards greatly increased , caused the generation of more compact Spots , which at last wholly cover'd the whole Earth . Which Spots being no longer in a condition to be dissolved , and many of them lying heaped together , and the Force of the Vortex , which contain'd the Earth being thereby diminish'd , gave occasion to the Sun 's Vortex to swallow up the Earth , together with the Spots , Air , and all , which stop'd in ▪ that place where it now is . III. There are three Regions to ●e distinguisht in the Earth . Supposing the Earth in this state , we are to take notice of Three Regions in it : Whereof the First and Inmost I seems to contain nothing but the Matter of the First Element , which is there moved like the Sun , and much of the same Nature ; save only , that probably it is not so pure , because it cannot rid it self of that Matter , which the Sun continually casts forth , and of which Spots are generated . The Middle Region M , consists of a very dark and compact Body : For seeing that this Body was at first made up of very minute Particles ( as at first appertaining to the first Element ) joyn'd together , it seems probable that there could be no Pores in it , but such only as were so small , that they could only transmit those striate Particles with the other Matter of the First Element . And Experience witnesseth as much in the Spots of the Sun , which being of the same nature as this Body M ; save only that they are much more thin and loose , do notwithstanding obstruct the passage of Light , which could not be in case their Pores were large enough to admit the Globuli of the Second Element . For seeing that these Pores were at first formed in fluid and soft Matter , they would also without doubt be strait and smooth enough , not to hinder the Action of Light. But these two Regions of the Earth do not much concern us , as being conceal'd from us . The Third Region , is that out of which all Earthly Bodies are formed , as we shall shew hereafter : At present we suppose nothing to be in it , besides a vast Mass or gathering together of the Particles of the Third Element , encompass'd with much Heavenly matter , whose nature we may easily understand from the manner of their Primordial Generation . IV. The Formation of the various Earthly Bodies . From what hath been said , we easily apprehend , that no great Change could happen in the innermost or middle Region of the Earth ; but the External part of it , was capable of being formed into various Bodies . For at the first 2 , then 3 , and afterwards 4 , with many other different Bodies , were to be made out of it . V. The Uppermost Region of the Earth distinguisht into two Bodies . And here , in the first place let us consider , that the grosser Particles of this Third Region being thrust down below the rest , by the force of the Heavenly Globuli , this Supream part of the Earth , here marked with the Letter A , is thereby distinguish'd into two different Bodies , represented by B and C ; whereof the uppermost B , is of a loose contexture , fluid and pellucid ; whereas the undermost is somewhat close , hard and opake . VI. The Formation of the Third Body , between the two former . Again , because we find that the Body C was distinguish'd from the Body B , only by this means ; because its Parts being prest downwards by the Heavenly Globuli , did cling together , we shall easily apprehend , that it was necessary that another Body , such as is that marked D , must have been generated between them . For the Figures of the Particles of the Third Element , of which the Bodies B and C consist , are very different , and may be here distinguish'd by us into 3 Chief General Heads ; for some of them are variously divided and extended like the Branches of Trees , and these chiefly were those , which being driven down by the Celestial matter cling together ▪ and compose the Body C. Again , there are others that are more solid , and as to their Figure , are not all of them Round or Cubical , but of several Figures , like the small parts of Rubbish ; and these , if they be somewhat great , sink down below the rest by the force of Gravity ; but in case they be somewhat less , they continue mix'd with the former , and fill up the Spaces that are left by them . Lastly , there are some of a longish Figure , and without any Jettings-out like Boughs , but like long and even Sticks , which also mingle themselves with the former , where they find Pores or Intervals wide enough for them to enter , but do not readily cling or stick to them . Which being thus supposed , it will be obvious to believe , that when first the Branchy Particles of the Body C began to be entangled together , many of the Longish were intermix'd with them ; and that they afterwards , whilst those being still more and more prest down , became more closely joyn'd together , got up above them towards D , and there constituted a Body , very different from the two other B and C. After the same manner as we see , that by Treading the Earth , in Moorish places , Water is squeez'd out of it , which afterwards comes to cover the Surface of it . VII . The Formation of the Fourth Body . Now when some other Particles less solid than those of the Body D , fell down from B , they stuck to the surface of the Body D ; and because most of them were Branchy , they by degrees clung together , and constituted the hard Body E , very different from B and D , which are fluid . Which Body E , at the first was very thin , like a Crust or Shell covering the Body D ; but grew thicker in process of time , new Particles from the Body B , as likewise from D , joyning themselves to them . VIII . How a Space was left between the Third and Fourth Body . We are likewise to consider , that it could so happen in process of Time , that a great part of the Body D , might be wasted , by which means a considerable Space F , might be left between D and E , which could not be fill'd up with any other matter , besides that out of which the Body B did consist , the thinnest Particles whereof , easily found a passage through the Pores of the Body E , into those places which were quitted by other thicker parts , which came forth from D. IX . How Cracks or Slits came to be in the Fourth Body . And how it broke into several pieces . Lastly , We may grant , that many Cracks might be made in the Body E , by the heat of the Sun ; as we find that there are many Cracks in the Ground in Summer time , when it is parched by the Sun ; and that these Cracks grow greater and greater , the longer that the Drought lasts : By which means its parts at last did so loosly hang together , that it was no longer able to hold up as an Arch between F , and B ; but being broke to pieces , by reason of its Heaviness fell down upon the Surface of the Body C ; and forasmuch as that Surface was not broad enough , for to receive all the Fragments lying together , so as to keep the same situation they had before , some of the said Fragments were forced to lye shelving one upon another . As for Example , If we suppose that in that part of the Body E , which this Figure represents , the chief Crack or Slits were so disposed in the places 1 , 2 , 3 , 4 , 5 , 6 , 7. that the two Fragments 2 , 3 , and 6 , 7 , should fall a little before the rest , and the ends of the four other Fragments 2 , 3 , 5 , and 6 , before the opposite 1 , 4 , and V ; as also the End 5 , of the Fragment 45 , before the End V of the Fragment V , 6 , there is no question but they would be rang'd upon the Surface of the Body C , in the same manner as they are delineated , viz. so as that the Fragments 2 , 3 , and 6 , 7 , would be joyned next to the Body C , and the other four lye shelving on their sides , the one leaning upon the other , &c. X. ●●at hence was t●e Original of M●untains , 〈…〉 &c. Further , if we consider that by the Body B , and F , here , the Air is to be understood ; and by C , an inward very thick Crust of the Earth , from whence Metals are generated ; by D , the Water ; and lastly by E , the outward part of the Earth , which consists of Stones , Clay , Sand and Mud ; we shall easily understand by the Water arising above the Fragments 23 , and 67 , the Sea ; by other Fragments that are but a little leaning , and not cover'd with any Waters , as 8 , 9 , and VX , great Plains ; and by others that stand more upright , as 12 , and 94 V , Mountains . We shall also take notice , that when these Fragments by their own weight thus fell down , their extremities or ends forceably dash'd against each other , which made them fly into many less Fragments ; which made great Stones on some Sea-shoars , as at 1 ; and several tops of Mountains , partly very High , as at 4 ; partly Rising only , as at 9 and V ; as also Rocks in the Sea , as at 3 and 6. XI . T●e Earth 〈◊〉 a Round Body . As to what belongs to the Figure of the Earth , it may be Mathematically demonstrated that it is Spherical ; but forasmuch as Mathematical Demonstrations seem obscure to those who are ignorant in the Doctrin of Dimensions , it will here be sufficient to prove it to be so : First , Because its Particles are equally prest on all sides by the Heavenly Matter that surrounds it . Secondly , Because the Sun , who is at a great height above us , doth not enlighten all the Parts of the World at once , but first vouchsafes his Light to the Eastern Inhabitants , and afterwards to the Western ; in which communication of his Light he observes this proportion , that those who live 15 Degrees nearer to the East , perceive his Light one hour sooner ; and those who live 30 Degrees nearer , two hours , and so for the rest , observing the Proportion of 15 Degrees for each hour . Which could not be so , if the Earth were not of a Round figure . XII . The same proved from the position of the Stars . The situation of the Stars also confirms this . For those Stars which are about the North Pole are always in sight ; whereas those that are about the South Pole do not appear , except we move so far towards the South , as to be in the midst between both Poles : In like manner the Sun doth sooner Rise and Set to those that live more Eastward , than to those that live Westward , as appears by an Eclipse , which was seen by us at Midnight ; and by those that liv'd Eastward , not till after 3 a Clock . XIII . The Mountains are no Argument against the Round Figure of the Earth . Neither is the Inequality of the Surface of the Earth , by reason of High Mountains and Deep Valleys , and Proof against its Roundness : For the Earth is not Mathematically Round , as an exact polish'd Globe , but Geometrically ; inasmuch as all these Inequalities , compar'd with the Compass of the Earth , are no more an obstacle to its Roundness , than the unevenness of the Rind of an Orange spoils the Roundness of its figure . XIV . What we are to understand by the Globe of the Earth . By the Globe of the Earth , we do not only understand the Earth it self , but the Water also which covers a great part of it ; seeing that the Parts of both of them tend to the same common Center ; and because the Surface of the Sea is continuous with that of the Earth ; so that to those who Sail North or South , or Inhabit Eastward or Westward , the same Quarters of Heaven appear , or disappear . Which is an evident Proof , that the Surface of the Earth is not a level or plain , since those that set Sail do find , that the swelling Roundness of the Sea hides the Earth from them , and at last makes it altogether disappear . XV. There can be no exact Parallels upon the surface of the Earth . Accordingly GASSENDUS well infers , that no two Plumb-Lines , or Perpendiculars , are exactly Parallel ; and consequently , that no two Walls built by a Plumb-Line , are such , tho' they appear so to the Eye : For seeing that all Perpendiculars fall upon the Convex surface of the Earth , they must needs meet in the Center , in case we should suppose them to be drawn on at length , and consequently cannot be parallel . XVI . The Bigness of the Earth . Forasmuch as the Semidiameter of the Earth is a Measure , whereby we discover the magnitude and distance of the Stars ; we are to take notice that one Degree of a great Circle doth contain 60 Miles on the surface of the Earth : By which Number , if we multiply the 360 Degrees that are in a whole Circle , we shall find that the Compass of the Earth consists of 21600 Miles . Besides , we are to observe , that when a Circle is divided into 22 parts , its Diameter contains 7 of them , and its Semidiameter 3 and an half : So that the whole Compass hath the same proportion to the Diameter , as 22 to 7. Wherefore the Diameter of the Earth consists of 7200 Miles , and the Semidiameter 3600 Miles . XVII . Other Properties of the Earth . From the Description , we have already given of the Earth , it follows also that it must be Hard and Dry : For the Dryness and Hardness of any Body proceeds from the Resting of its Parts . As also , that it must be Cold : For seeing that its Parts have either but a very weak , or else no motion at all , neither can they be conceived to have any heat to speak of . It is necessary also that it should be Heavy : For seeing its parts have less Force than others , to recede from the Center of the Vortex wherein it is contain'd , they must needs be driven down towards it . So likewise it is Opake , and reflects the Light it receives ; by reason of the Interruption and manifold Windings of its Pores , not exactly answering to one another . XVIII . There are four kind of Pores in the inward parts of the Earth . There are 4 kind of Pores , that are found within the Earth . The First whereof are such as are extended in length , but with wavings and turnings this way and that way . The second are strait Pores , whereof some have a hollow Surface , but rough and rugged , and others smooth and even . The third kind are those , that run into one another , and whereof one has often communication with many other Pores , upon which account we may compare them to the Branches of Trees . And lastly , the fourth kind of Pores are such , as are somewhat like Screws . XIX . All the Pores that are of the same kind , are not altogether alike . But tho' we have here deduced all the Pores of the Earth to four kinds ; yet we allow that there may be infinite variety in one and the same kind , so that it may be there are not two Pores of one and the same kind , that are altogether like one another . CHAP. II. The Earth is moved by the fluid Heaven , that encompasseth it round . I. The Common People 〈◊〉 the 〈◊〉 to 〈…〉 the 〈…〉 World. THe Common People are not more obstinate in any Persuasion , than they are in that of the Earths Immobility ; for they cannot imagine , that that which is the foundation and support of all things , should be moved ; or that a Body of such prodigious Weight and Bulk should be carried about by another . Hence it is they believe , that the Sun and fix'd Stars are whirl'd round about us , and that the Earth rests immovable in the midst of the Heaven . Indeed our Eyes are not wanting to confirm this Persuasion ; for we see that the Stars turn towards us from the East to 〈◊〉 West , and that the Sun after the same manner 〈◊〉 approacheth to us . II. 〈◊〉 ●ust 〈…〉 to●●●t t● trust our 〈◊〉 . But we ought to remember , that we must not too much rely upon the report of our Senses . For in this case it is with us , as with those that are in a Ship , who think that the Shoar departs from them , when indeed they themselves do depart from the Shoar . For to make a thing appear as if it were moved , it is all one , as ARISTOTLE saith , Whether the Motion be in the Spectator , or in the thing that is moved . Wherefore neither must it seem strange to us , who are carried about with the Earth , from whence we see nothing but the Roof of Heaven , and the Stars in a manner resting in their several Stations , that they do seem to draw near , pass by , and depart from us , the motion of the Earth being most steady and even . This is the Reason , that whilst Men look upon the Earth ; they cannot conceive it to be moved ; but when they turn their Eyes to any other Object , with regard to which the Interval is either increased or diminished , then indeed it seems to be moved : But our Sight , or rather our Mind , is more apt to ascribe it to the thing seen , tho' it be at rest , than to the thing that is moved , which it finds to be at no distance from it self . But that we may not seem to assert this without any grounds , we will enquire , Whether the Earth in it self have any Repugnance to motion ; and if we find it hath not , Why should not we conclude that it is moved ? III. The Objections that are made against the Motion of the Earth . Two things are only alledg'd against the Motion of the Earth , viz. its Bulk , and its Weight . For they Object , that all the parts of the Earth tend to the Center , where they are kept by the force of their Gravity . As we see that Stones and Metals rest in their several places , whence they cannot be removed without force , by reason of the propension they have to the Center . But that this Reason is not conclusive , appears from hence , that round Bowls or Bullets , made of Iron or Steel , are by a small Force made to trundle along a Plain or Level . Stones therefore and Metals continue in their places , not because they strive to tend towards the Center , but because they are firmly joyned to the Bodies whereon they lye ; which Impediment is not to be found in the Earth , as being surrounded with the Fluid Heaven . IV. There is no inward Heaviness in the Earth . Besides , we know that there is no Inward Gravity in the Earth , seeing that all Gravitation is caused by the Heavenly Globuli , which drive Terrestrial Bodies towards the Center ; so that if we should suppose all the Space about the Earth to be fill'd with such Bodies , as did neither promote nor hinder the motion of other Bodies , and the Earth to be turn'd about its Axis in 24 Hours , all its Parts , which did not very closely stick together , would fly away on every side ; as we find that Sand , which is cast into a Whirlpool , is every way dissipated . And accordingly we may rather account the Parts of the Earth to be Light , than Heavy . V. The Heaviness 〈◊〉 the Earth cann●t hi●der 〈◊〉 Motion . Neither do I see what else can be understood by the Heaviness of the Earth , than a Quality whereby Bodies tending towards the Center of the Earth , have a tendency also to lye closer and cling together . Now such a Heaviness cannot hinder the Earth from being whirl'd about with the motion of the Heaven that surrounds it ; no more than a Company of Men , being in a Boat that is whirl'd round , could hinder their turning round , by their mutual embracing and holding fast to one another . VI. It s 〈◊〉 〈◊〉 no 〈◊〉 t● its Motion . Neither can the Bulk or Magnitude of the Earth hinder its motion : For the Bigness of a Body doth not deprive it of Mobility , which is a Property of all Bodies , and cannot be removed from them , except we should own all motion to be violent . VII . The Earth is tur●'d round ●y a year●● and 〈◊〉 〈◊〉 . We must conclude therefore , that the Earth can be carried round by the Coelestial matter that surrounds it . For seeing that according to our Supposition , the Vortex of the Earth hath been swallow'd up by that of the Sun ; and that by this means the Earth hath been thrust down to that place where it now is , where it is surrounded with the Fluid Heavenly matter , always turning round , it cannot be otherwise but that the Earth must be carried about with it . This is clear of it self . Secondly , from the Nature of the Earth , which being a Planet , must not only be carried round by an Annual motion , in the surrounding Coelestial matter ; but also by a daily Circumvolution : For the Earth having formerly been a Star , may easily be conceived to have retain'd the motion it had before ; and seeing that the subtil Matter in its Center doth turn round , it communicates that motion to the other Parts of the Earth , and makes the whole to turn round likewise . VIII . An Objection against the Earths being a Planet . But youl'l say , What resemblance is there between the Earth and the Planets , seeing that it is the meanest of all other Bodies ? IX . The Properties o● a Planet do belong to the Earth . Yet for all this , if we consider the Form and Nature of the Earth , we shall meet with several Arguments to persuade us , that it is a Planet . For it is very like to the Planets in its bulk and bigness . It s figure also and situation prove the same ; for it is as round as they are , and hangs pois'd in the midst of the Air. So also like them , it wants Light of its own , and shines only with a borrowed Refulgency from the Sun : And lastly , It is subject to the same Appearances , Aspects , Directions , Stations , Retrogradations , &c. For to pass by its various Reciprocations with the Moon , whatsoever Mercury and Venus do appear to the Earth , the same doth the Earth appear to Mars , Jupiter , and Saturn : And as Mars , Jupiter , and Saturn appear to her , so doth she appear to Venus and Mercury . Wherefore since the Planets are moved , why may not we conclude that the Earth , forasmuch as it is like them , must likewise move about its own Axis , and about the Center of the Universe . How does it appear then , that the Earth is the meanest and most ignoble of all Bodies ; but only from that mistaken Opinion , that the Matter of Heaven is something that is Divine , and that the Earth is nothing else but the very Sink of the World ? What can hinder the Earth from being as Noble a Body as Venus , Mercury , or any other Planet ? X. According to Tycho's Hypothesis t●● Earth 〈◊〉 moved 〈◊〉 o● all . This Opinion will not seem strange to those that follow TYCHO BRAHE ; for upon examining of his Hypothesis they will find , that he attributes more Motion to the Earth than we do . For supposing the Earth to be immovable , the Heaven and Stars must whirl round it in 24 hours ; but this cannot be done , except that the Parts of the Earth be translated out of the Neighbourhood of those Parts of the Heaven which they touch ; and forasmuch as Motion is nothing else than such a Translation , we may well conclude , that according to his Hypothesis , a motion must be attributed to the Earth . Yea , if we consider rightly of the Matter , we must conclude that the Earth is more moved than the Heaven it self ; forasmuch as the Earth , according to its whole Surface , doth recede from the Body that surrounds it ; whereas the Heaven only removes according to its hollow Surface , which is very little if compar'd with its Convex Surface . And thus according to TYCHO's Hypothesis , there is an evident Reason for attributing a motion to the Earth ; whereas the Reason whereby he attributes Motion to the Heaven , and Rest ▪ to the Earth , is altogether uncertain , and forged by his own Imagination . XI . The Motion of the Earth produ●●th no diversity 〈◊〉 A●p●ct in the fix'd Stars , because of their vast distance . You 'l say , If the Sun has its position amongst the fix'd Stars , and the Earth be moved round it , it is necessary that the Earth must at some times be nearer to them , by the whole Space of its Orb , than at other times ; but the Appearances make out no such thing to us . To which I Answer , That this Difficulty will vanish , if we consider the vast Distance that is between us and the fix'd Stars , which is so very great , that the whole Orb , which is describ'd by the Earth about the Sun , is but a Point compared with it . Which tho' it may seem to be incredible to those , who are not used to consider the wonderful Works of GOD , and who look upon the Earth as the chiefest part of the World , and the Habitation of Man , for whose sake all other things were made : Yet can it not seem so to Astronomers , who are well acquainted with these things . XII . The Globe of the Earth is of an imperceptible Magnitude , when compared with the vast Compass of the Starry Heaven . From hence also we may easily answer the Objection of some Astronomers , alledging , That if the Earth were not in the midst of the World , the whole Hemisphere could not appear to us , or the one half of the Heaven , and especially of the Zodiack , which always contains 6 Signs . For these Men do not consider , that the whole Earth , compar'd to the Heaven , is of an insensible Bulk . Which thing PYTHAGORAS and COPERNICUS do not only affirm concerning the Earth , but also of the Annual Orb , compar'd with the Heaven of the fix'd Stars : For they assert , That 2 Plains , whereof the one being drawn through the Sun , the other through the Surface of the Orb , as Horizontal , would appear to meet together , because of the vast Distance : So that by that time they reach the Heaven , notwithstanding that they are terminated at Circles so greatly distant from each other , as is the Sun from the Earth , they will seem to end at the same indivisible Point ; neither doth the amplitude of the great Orb , hinder us from seeing the whole Hemisphere , and whole 6 Signs of the Zodiack . XIII . How it comes to pass , that this Motion of the Earth , doth not overturn Houses and Buildings . In the second place you 'l Object , That it hath been asserted in the General Physicks , that a Body which is turn'd round , doth endeavour , as much as in it lies , to recede it from the Center : How then comes it to pass , that Castles and Steeples are not cast off into the Air by this Circular motion of the Earth ? XIV . The Answer . It is Answered , That all the Parts of the Earth are on all sides prest down towards the Center , and hindred from flying loose and being scatter'd abroad : For the Heavenly Globuli moving by right Lines , or such as little deviate from them , drive with great force against the Earth ; and thus thrusting all its Parts towards the Center , hinder it from flying out towards the Heaven : For seeing that the Heaven , which lies between the Earth and the Moon , is much more swiftly carried about the Earth , than the Earth is carried about its Axis : And since the Particles whereof the Heaven consists , are most fluid and variously agitated in Right Lines , or approaching thereto , they with great force strike against the Earth , by which means all the parts of the Earth are comprest and thrust towards the Center . CHAP. III. The Earths Motion established by other Arguments . I. FOrasmuch as it is evident from what hath been said already , that the Earth of it self hath no repugnance to Motion ; and that neither its Bulk , or Heaviness , can hinder it from being 〈◊〉 about by the fluid Heaven : It remains no● that we superadd some Reasons , which have no● only induced our Modern Mathematicians , but also the Ancients , to favour this Opinion . But before I enter upon these Arguments , I would desire such as are free from Prejudice , to contemplate the vast extension of the Heavens , and compare the same with the small Bulk of the the Earth , which is so many Thousand times less : ( For even the Common Opinion admits the Circumference of the Firmament to exceed that of the Earth 50000 times . ) Next , let them consider the swiftness of that Motion , which we must necessarily allow to those high Bodies , if we suppose them to be whirl'd about the Earth in the space of 24 Hours . Which being attentively consider'd , I question not but they will be more inclin'd to think the Heavens immovable , and that the Earth by its Diurnal motion is turn'd round the Sun , than that the whole Universe is snatch'd round about it , with a swiftness that is altogether unconceivable . III. The Motion of the Stars is incredible . For the Mathematicians do allow , that the fix'd Stars are distant from us 14000 Semidiameters of the Earth . And since , according to ARCHIMEDES his Computation , the Semidiameter of the Earth consists of 859 German Miles , every one of which contains 4000 Geometrical Paces , or 20000 Foot , the Circumference of the Sphere of the fix'd Stars will be of 75592984 German Miles . And seeing all this Space must be run over in 24 hours , in 1 hour the 24 th part of it must be dispatch'd , that is , 3149066 German Miles ; in the 60 th part of an hour , or a first Minute , 52494 German Miles ; in a second minute , that is , the 3600 th part of an hour , 874 German Miles , that is , 3496 Italian Miles , or 3496000 Geometrical Paces , or 174900000 Foot , which is inconceivable in so short a Space . IV. The Earths Motion , proved by an Argument drawn r●m the Ptolomaick Hypothesis . A strong Argument for the Earths Motion , may likewise be drawn from the PTOLOMAICK Hypothesis . For according to it , the Heavenly Bodies are moved more slowly or swiftly , according to their Bulk ; they that are less in Bulk performing their Revolution in less time , than those that are of a greater Bulk . Thus Saturn , the highest and biggest of all the Planets , takes up almost 30 years in running through his Orb ; Jupiter 12 , Mars 2● and so of the rest , according as the Orbs they are to run over , are nearer or further from the Earth : But if we suppose the Immobility of the Earth , all this Order must be overthrown , since not only Saturn , but all the Intermediate Planets between him and the Earth , must be hurl'd about in 24 hours : All which things are contrary to the Phaenomena . V. The Motion o● t●● 〈◊〉 makes 〈◊〉 the ●●●uty and Order o● t●e World. But supposing the Earth to be moved , all these things are salv'd , and the comely Order of the Universe preserv'd and establish'd . Seeing that we may proceed from the Earth , to those Bodies that are more slowly moved , without any confusion , till we come to the Heaven of fix'd Stars . Or if any one should assert the fix'd Stars also to be moved , thence will follow another Absurdity , viz. that their Motions will be unequal . For some of them that are in the Greatest Circles will be most swiftly moved , and others in the least Circles , with a very slow motion , according as the said Circles shall be further from the Ecliptick , and nearer to the Poles . Now what can be more absur'd , than to suppose Bodies to be moved at the remotest distances from the Center , and yet to assign the least Spaces to their motions ? VI. I● the 〈◊〉 ●e immovable , there must be two contrary Motions in the Heavens . Moreover , all those who are of the contrary Opinion , hold , that the Determination of a motion towards one part , and its meeting of another Body , resting , or otherwise moved , are contrary to one another : Now supposing that the Heaven is moved , we shall find divers motions in it , one from East to West , and another from West to East . For the Heaven , according to them , is most swiftly whirl'd towards the West ; and the Planets from West to East ; which two motions are Diametrically opposite . Now , it is impossible for one and the same Body to be carried divers ways by contrary Motions : For if a Body be carried from East to West , it cannot at the same time be carried from West to East . VII . These Difficulties are removed by the Motion of the Earth . But what still more surpasseth our Apprehension is , How it is possible that whilst the Heaven is with such incredible swiftness hurl'd about , the Planets should in spight of it perform their Courses in a quite contrary motion to it ; especially seeing that their motion , compared with that of the Heaven , is very slow , and therefore may be 〈…〉 by a stronger motion . But by 〈…〉 a Motion to the Earth , all this contrariety 〈…〉 and we have no more than one motion , viz. from West to East , which way the Earth and all the Planets are carried . VIII . 'T is incredible that all the Heavens should be moved about the Earth , and that i● should be unmov●able . The great Force also of the Motion of the Heavens , asserted by the Followers of PTOLOMAEUS his Opinion , is a strong Argument to prove the Diurnal Circumvolution of the Earth ; for they must allow it to be so powerful , as to whirl about with it not only the Planets , but also the fix'd Stars . Now if it be so that all Inferiour Bodies are forc'd to follow the motion of the Highest Heaven ; and that the Element of Fire , and a great part of the Air , cannot resist its motion , how is it possible that the Earth that hangs in the midst of the Air , and is indifferent to Motion , or Rest , and surrounded with fluid Matter , should for all that alone remain immovable , and resist so vast a Force ? This , according to my sense , seems utterly inconceivable ; for by what Ropes or other Holdfasts , is it kept immovable in this Aethereal Ocean ? For altho' the Heavenly Matter be liquid , and doth not push against other Bodies , with as much force as hard Bodies do ; yet neither can it be denied , but that the motion of fluid Bodies , when determin'd to some one part , doth carry along with them whatsoever Matter is contained in them , how solid or compact soever it may be , except it be detained by some outward Force . As we see that great Stones , by the strong Current of Rivers , are carried along to a vast distance , except they be stopt by the unevenness of the Bottom , or some other Obstacle . Now all these Difficulties vanish by ascribing to the Earth , which is a very little Body , yea , imperceptible , if compar'd with the Universe , and unable to cause any Change in the World , a motion round its own Center . IX . It is 〈◊〉 contra●ictory to the Order of Nature . Moreover , what shall we assign to be the Cause , that keeps the Earth immovable ? Is it by some Force ? But where shall we look for this Force ? or what is it ? Is it a Natural Force , depending on the Divine Order and Constitution , setled in the first Creation , and consequently the ordinary Providence of GOD ? Or is it an immediate Hand of GOD ? It cannot be the ordinary Power of GOD : For the Order of Nature is this , that where Bodies that are near and far off , are hurried away by another Body , there also that which intervenes between those that are near and far off , must be carried about also , except something hinder it . Let us suppose Lines to be drawn from the Sun through the Earth and Planets ; by which Lines we are to conceive the Sun-beams to be diffused , according to TYCHO , that by them he may carry about with him the Upper and Lower Planets ; if therefore he snatcheth the superiour Planets along with him , must not he of necessity do the same for the Earth , which is in the midst between them ? Neither can this be said to be done by the immediate Power of GOD , since TYCHO himself never thought fit to have recourse to any such ▪ Power , for the making out of his Hypothesis . X. The Sun being the great Lamp of the World , it would be absurd to conceive i● pla●'d in a 〈◊〉 . The Light of Nature also seconds our Opinion ; for those Bodies are supposed to be of different Natures , which are endued with different Affections : Thus Lucid and Opake Bodies are distinguish'd in their Composition , because they have distinct Properties . Wherefore seeing that the Planets , of whose number the Earth is , are solid and destitute of all Light ; it is necessary that the Sun and fix'd Stars should continue unmoved , and that the Earth and the rest of the Planets , should move round him , to partake of his Light. For as it would be absurd to place a Light , that is to enlighten a Church , in some Corner of it , and not in the midst : So the Sun being design'd to be the Great Light of the Universe , by which other Bodies were to be illuminated , it was to be placed in the Center , and not in one of the Sides of it . And accordingly we must conclude , that the Sun stands still , and that the Earth , with the rest of the Planets , are carried round him . XI . The same Effects follow , whether the Earth be supposed to move or stand still . Besides , I cannot conceive what Reason some Philosophers could have , to maintain the Earths Immobility , seeing that the same Effects follow , whether its motion be allow'd or deny'd . For the Sun seems to us to run through the Zodiack after the same manner , notwithstanding that he rests in the Center of our Vortex : For wheresoever the Earth is , the Sun being look'd upon from it , will always hide that Sign , in opposition to which the Earth is placed . Thus when the Earth is in Libra , the Sun is seen in Aries ; and when the Earth passeth from Cancer to Leo , the Sun is seen to pass out of Capricorn into Aquarius . XII . Some Body must rest , or stand still , for to be able to judge of the motion of another Body . For seeing that no relation can be fixt between Bodies that are in motion , and it is necessary that some be moved , and others stand still , that we may be able to form some respect between them : The same Appearances happen to us , whether we suppose the Earth only to be moved , or the Heaven with the Circumambient Bodies ; forasmuch as by this means the Relation only of a Body moving and at rest , is varied , the same effect being indifferently produc'd by either of them , as to us . Now this being supposed , it will not be easie for any one to believe , that Nature , which always proceeds the most short and compendious way , should have chosen to perform that by the unconceivable motion of so many vast Bodies , which she might , without all that ado , have brought about by the alone motion of the Earth . XIII . The Air and Water are whirl'd about with the Earth . These and other like Arguments , which I might alledge , are sufficient , as I suppose , to prove that the Earth moves , at least to those who listen to Reason , rather than Authority ; especially if they consider , that the Globe of the Earth is turned round together , with the Neighbouring Bodies of Water and Air. For as the Water , as hath been said already ; so likewise the Air makes a part of the Terrestrial Globe , and may be conceived to have the same respect to the Earth , as the soft Down that grows upon a Body hath to it . CHAP. IV. The Objections answer'd , which by ARISTOTLE and others , are framed against the Motion of the Earth . I. Objections afford a greater Evidence , to discern the truth of the matter in question . AS Lucid Bodies , compar'd with such as are Opake , do thereby appear the clearer ; and as the Sun shines brighter , when newly got from under a Cloud : So I question not , but that this Opinion concerning the Earths motion , will appear more plausible by a Refutation of the Objections that Adversaries make against it . Amongst those who oppose this Opinion , ARISTOTLE is the Chief ; a Man of a great Wit , and fit for the Contemplation , not only of Earthly , but Sublime things : Who 't is like , had he liv'd in these our days , would either have been of our Opinion , or at least have better refuted the Arguments , which are brought to overthrow the stability of the Earth . II. Aristotle's Objection , drawn from the Nature of Natural and Violent Motion . The First Argument he brings against us is , That this Circumvolution of the Earth is not a Natural , but a Violent motion ; because it is repugnant for that to agree Naturally to any thing , that doth not agree to all its parts likewise . Now it is evident that the Parts of the Earth do not move so , for they are carried in a strait Line to the Center ; wherefore Circular motion cannot be said to be Natural to the Earth , and therefore much less to be everlasting . III. The word Violent doth not belong to Natural things . This Objection is easily answer'd , by saying , That the word Violent doth not at all belong to Natural things , forasmuch as they are indifferent to Motion or Rest ; and it is no less Natural for Bodies to be moved , when they are push'd forwards by an External Agent ; than it is for them to rest , when they are not push'd out of their places . It belongs only to our Will to suffer Violence , when any thing is done that is contrary and adverse to it . But let us grant that Violence may be attributed to Bodies , and that there are certain Inclinations in things , by which they prosecute the Ends they are design'd for ; yet cannot we conclude thence , that the Earth is moved against Nature , because its parts are moved downwards by a strait , and not by a Circular motion : For this is to be understood of the parts of the Earth , separated from the rest of the Globe ; and thus consider'd , it is not necessary that they should be in all things like unto the whole : No more than it is necessary , that all the Particles of the Earth should be round ; or every part of a Circle , make a Circle , because the whole is Round , and the motion of the whole constitutes a Circle : But only that the parts of the whole be moved together with it ; and like as the Globe of the Earth is whirld about in 24 hours , so all the parts that compound it , be in the same Space carried about its Center . IV. Nothing hinders , but that the Motion of the Earth may be Everlasting . Which Motion may be no less Everlasting to the Earth , than any other motion ; yea , and more too , if we attend to the Nature of Strait motion . For it is certain ; that the Earth cannot move for ever upwards or downwards : But what can hinder that a Body may move Round continually , supposing the same cause that produceth it at first , to persevere ? Wherefore , according to our Principle we are to assert , that no force or violence is to be found in its Nature ; and that it is no less natural for Bodies to move Round , than to move in a strait Line , upwards or downwards , or any other way whatsoever . V. The second Objection , from the Heaviness of Bodies . The Heaviness of Bodies seems of all other things to be most contrary to the Circumvolution of the Earth . For Heavy Bodies do from on high , fall to the Earth by a strait Line : Now supposing this Circular motion of the Earth ; how can it be , that a Stone let fall from the Top of a Tower , should fall down plumb to the Bottom of it , when in the mean time that the Stone is falling down , the Earth that bears the Tower moves many Cubits ; and therefore the Stone , in case the Earth were moved , would not light at the foot of the Tower , but a good distance from it , which is contrary to daily experience . VI. A S●●ne ●all●ng down from the top of a Tower , is carried by a twofold motion . This Objection , tho' accounted of great weight by our Adversaries , is nevertheless easie enough to be answered , if we consider , that in every Heavy Body , besides its motion downwards , there is another imprest upon it , from the Earth , whirling round about its own Axis , whereby not only it self , but the Bodies that are about it , are carried along . There is therefore a twofold motion in a a Stone that falls from a Tower , the one a straight motion , whereby it falls down to the Ground , the other a circular , whereby the Earth is carried along with the Coelestial matter that surrounds it ; and therefore it is not necessary that a Stone fallen down from a Tower , should fall at a distance from it , since both of them are carried about with the same swiftness , and the Stone cannot but fall plumb down at the foot of the Tower. For it is no contradiction in Philosophy for one motion to be compounded of a straight and circular . ARISTOTLE himself owns as much , when he attributes to the Fire a straight motion , by which it is carried upwards ; and a circular , in which it is carried about the Earth by the supream Heaven . A Stone therefore falls plumb down to the Earth , because with respect to the Stone it is all one , as if it were not mov'd at all , seeing that the Air and all the Bodies contain'd in it , ●are prest down by the subtil matter , and are whirl'd about together with the Terrestrial Globe . This is proved by a Stone falling from the Mast of a Ship , which whether it move , or stand still , the Stone ever falls down in the same place . The reason whereof is plainly this , because the Stones motion downwards , which it derives from the Coelestial matter , is accompanied with a Lateral motion , communicated to it by the Ship , which is swiftly driven along . And consequently it is not strange at all , that it falls down perpendicularly , because the Stone moves as much forwards as the Earth , and consequently one and the same point of the Earth ever answers to the Stone , and therefore upon it the Stone must needs fall . VII . The motion of a Stone falling down is not straight , but according to a Parabolical ●ine . Tho' indeed to speak exactly concerning these things , we must own , that heavy Bodies do not fall downwards by a Right , or Perpendicular Line to the surface of the Earth , but by a kind of Transverse or Crooked , called a Parabolical Line : and the Reason why the motion of a Stone appears to be Right and Perpendicular , is , because the Eye doth not perceive that motion whereby it self is moved , and which is common to it with the Stone , but only that motion which proceeds from the Action of Gravitation , or which is imprest upon the Stone , by him that casts it . VIII . A Third Objection from the Shot of a Gun. Against this Solution it may be , will be urged an Argument taken from the Shot discharged out of Great Guns , viz. how it comes to pass , the Earth being moved about its own Center , that a Bullet discharged from the East , should not move more slowly than another that is discharged from a like Gun , and an equal quantity of Powder from the West ? For if the Earth be carried from West to East , it must necessarily follow that the Bullet discharged from the West , must much exceed the swiftness of the other , as being assisted and promoted by the Circumvolution of the Earth the same way ; whereas the other is as much obstructed by the same , because it moves a quite contrary way . IX . The Answer . I Answer in the First Place , that when a Bullet is discharged towards the West , as much as the Earth moves towards the East , so much is the Bullet also driven back that way , by the common motion of the Vortex : and on the contrary , when a Bullet is discharged towards the East , as much as the Earth hasts the same way , so much is the Bullet retarded by the Vortex of the Earth . X. A common or general motion is no obstacle to particular motions . I Answer in the Second Place , that the motion of the Earth which is common to it with the Air , and other Bodies contained in it , doth neither hinder nor promote the motions of particular Bodies ; and consequently , that all things happen in the same manner , as if the motion of the Earth were not determined to any certain part . As is manifest from this Example . Suppose we , a Boat to be driven with great swiftness to some particular Region , and one part thereof to be full of Water , in which two Fishes are swiming , the one from the East to the West , and the other from West to East ; no body will imagine , that that Fish whose motion conspires with that of the Boat , will therefore move faster than the other . For it is certain , that which way soever they move , it will be with equal swiftness , as if the Boat were not moved at all . Thus the motion of the Earth from West to East , is no hinderance at all to those Bodies that move the contrary way . Yea the motion being common , it s the very same , as if there were none at all . XI . The motion of a Bullet discharged from a Gun , compared with the motion of Fishes in a Boat. For as these Fishes , besides the motion they have from their Animal Spirits , whereby they are carried which way they please , have also a motion imprest upon them from the Boat : In like manner a Bullet , besides that motion communicated to it by the Gunpowder , which carries it straight forward , hath another motion imprest upon it by the Earth , whereby it is whirl'd about in the same swiftness with it from West to East , and therefore runs through the same spaces as if there were no motion at all in the Earth . XII . A fourth Objection from the Nature of the Winds . Others again raise this Objection against the motion of the Earth : Supposing the circumvolution of the Earth , say they , there would always be a sensible Breez of Wind upon the Surface of it , as we perceive when we ride on Horseback , we are sensible of a kind of a Breez of Wind coming against our Faces , because the motion of the Horse exceeds the motion that is in the Air. Accordingly what a strong Breez of Wind ought we to feel , if with so swift a whirling about , as that of the Earth is supposed to be , we should run against the opposing Air ? Wherefore seeing we find nothing of this , we have reason to conclude , that there is no such motion at all . Book . 1. Part. 6. Chap ● G. 〈◊〉 I. Kip ● XIV . A Fifth Objection from Holy Scripture . The Authorities taken from Scripture seem to be of more force against this Opinion : For the Scripture in may places attributes stability to the Earth , and to the Sun a motion from East to West , as in the 1 st Chapter of Ecclesiastes , where it is said , The Sun ariseth , and goeth down , and hasteth to his place where he arose . And in the Book of Joshua it is reported for a Miracle , that the Sun stood still at the Prayer of Joshua , when he said , Chap. 10. 12. Sun , stand thou still upon Gibeon . Now this would not have been a Prodigy , if the Sun had always stood still in the midst of the World , and the Earth had whirl'd about it ; for if so , it had been more proper for Joshua to have said , Earth , be not thou moved . XV. The Scripture in may places accommodates it self to our manner of conceiving of things . To which I Answer , That it is generally owned , that the Scripture speaks of things according to the manner of men , that is , our way of conceiving them . As when the Scripture speaks of the Ends and Foundations of the Earth , neither of which do properly belong to it . In like manner , when it attributes to the Sea , an Abyss of an unmeasurable depth , with other various Affections and Motions , which it hath not . Thus likewise it is said in the 1 st . Chapter of Genesis , that God made two Great Lights , the Greater to rule the Day , and the Lesser to rule the Night . Which can only be understood as to outward appearance , and not according to exact Truth . Because the Sun and Moon are not the greatest Lights , espeally not the Moon , for Saturn and any of the Fixt Stars are greater than it . Neither can the Moon be called absolutely the least Light , seeing that Mercury is much less . And therefore we must conclude , that the Scripture calls them so , only because they appear so to us , and are accounted so according to vulgar opinion . And upon the same account it is , that the Earth in Scripture is said to stand still , and the Heaven to move about it ; because , as to our sight , the Earth seems rather to stand still , and the Sun to be whirl'd about it , than the contrary . The same thing happening to us in this case , as to those that Sail , to whom the Shoars seem to withdraw , tho' indeed they withdraw or depart from the Shoar . When therefore Joshua said , Sun , stand thou still , this is not to be understood , as if the Sun then had been stopt in his motion , and made to stand still ; but only that the Light of the Sun , at Joshua's Prayer , continued without change , by which means the Body of the Sun seem'd to stand . XVI . The Objection farther urged from Scripture . If it be urged , that this Explication cannot be admitted , forasmuch as in many other places of Holy Scripture the stability of the Earth is plainly asserted : As in the 92 d. Psalm , The Earth is established , that it cannot be moved , and the 1 st . of Ecclesiastes , One Generation passeth away , and another cometh , but the Earth standeth for ever . For how can the Earth be said to stand fast for ever , when indeed it is continually in motion ? XVII . The Objection answered . I Answer , that these places are not so to be understood , as if the Earth were immoveable , and did not turn about its own Axis , but only that there is such a firm and indissoluble union of its parts , that it continues the same , notwithstanding the perpetual generation and corruption of Animals , Plants , and other things that are upon it . So as that passage of the Poet may be attributed to the Earth . The same that our Progenitors did see , The same is now , and still shall be . And that this is the genuine sense of this place , plainly appears from the foregoing words , one Generation passeth away , and another cometh . As if it had been said ; tho' the Earth , according to some of his parts , be changed by means of Generation and Corruption , yet it standeth for ever , that is , it always continues in the same state : Much after the same manner as a Ship is said to continue the same , though it hath been often repaired , and several new Parts put instead of the old and decayed . CHAP. V. Concerning Day and Night , and the Vicissitudes of Seasons . I. What a Natural and Artificial Day is . A Day is commonly taken by Philosophers for the stay of the Sun above the Horizon : In which sense it is opposed to Night , which is the abode of the Sun under the Horizon . Or else a Day is taken for that Duration in which the Sun is conceived to run round the whole Earth . The Astronomers call the former of these an Artificial , and the later a Natural Day , as containing both the Artificial Day and Night . II. A Natural Day is either Astronomical or Civil . A Natural Day , is either Astronomical or Civil . An Astronomical Day is that space of time , wherein the whole Revolution of the Aequator is absolved , together with that portion of the Aequator , which answers to that part of the Ecliptick , which the Sun in the same time is understood to run through . The Civil Day , is that which is determined as to its Beginning and Ending , according to the custom of particular Cities or Nations . Thus the Italians begin their Day from Sun set ; the Babylonians from the Rising of the Sun ; the Umbrians from Noon ; the Romans from Midnight , &c. III A Year , which consists of Days and Nights , is that time , wherein the Sun runs through the whole Ecliptick , or all the Signs of the Zodiack ; which it doth in 365 days , 5 hours and 49 minutes : Which form of the Year , that it might be observed throughout the whole Roman Empire , Julius Caesar appointed that the 5 hours , with the 49 minutes , which the Year contained over and above the 365 days , should every fourth Year 〈◊〉 one Day , which should then consist of 3●6 Days . IV. But forasmuch as these 20 hours with their minutes could not make up a whole Day , it was so ordered that those minutes which were added to every Year , over and above the due length of it , by process of time were so increased , as by exact computation to amount to 10 days . And consequently also the Vernal Aequinox had changed its place , so as that the Sun , which entred Aries at the beginning of Christianity , on the 21 st day of March , did about 1500 years after , enter the same about the 11 th . day . To remedy which error , Pope Gregory XIII . restored the Aequinox to its former Seat , and by taking away 10 days , made it to return to the 21 st of March again . Which is the Reason why we here in England , not receiving this Reformation of the Kalender , differ 10 days from the account of others ; so that when in France it is the 11 th . day of March , it is no more than the 1 st . day with us , and so on . V. A threefold Revolution of the Earth . Forasmuch as the Diversity of the Days , Nights and Seasons of the Year , are consequent upon the motion of the Earth ; we are to take notice of a threefold motion in the Earth , viz. A Diurnal , Annual , and Motion of Inclinations . VI. The Diurnal motion of the Earth . The Diurnal motion , is that whereby the Earth is whirl'd about from West to East , in the space of 24 hours . This motion , according to our Hypothesis , doth not properly belong to the Earth , but to the fluid matter , in the midst whereof the Earth being poised , is together with the Atmosphere , carried about , not by a motion of its own , but of the Fluid Heaven that surrounds it : so that according to DES CARTES his Opinion , motion doth not properly belong to the Earth , but to the little Vortex which carries the Earth round with it self . VII . The Annual . The Annual motion , is that whereby the Earth runs through the Ecliptick in a years time ; which motion is also imparted to it by the Fluid matter , whereby it is pois'd , which being whirl'd round by the force of the Solar matter , doth necessarily carry about with it all the Bodies that Swim , or are poised in it . The Earth therefore being carried about the Sun , between the Orbs of Venus and Mars , runs through the 12 Signs of the Zodiack in a years time . Now how the Earth can , besides its turning round , about its own Axis , perform a circuit about the Sun , we may learn by the Example of a Top , which turning round upon your Hand , may by you in the mean time be carried round a Tree , without hindring the motion of it about its own Center . VIII . The Earths motion of Inclination . The motion of Inclination or Declination of the Earth , is the Deflexion of its Axis , from a Parallelism with the Axis of the Ecliptick , and ever keeping it so in every Situation , that it may always continue Parallel to the Axis of the World. So that indeed this motion , is not so much a distinct motion from the foregoing motions , as a certain modification of them ; for whilst the Earth absolves its Diurnal and Annual motion , it always hath its Poles directed to the same parts of Heaven . IX . This threefold Motion of the ●arth explained . These three motions of the Earth will be apprehended without difficulty , by comparing the two former to a Bowl delivered out of ones Hand , and rowling along the ground : and the third to a Flag fixt to the Mast of a Ship , but so , as to be able to turn round , in which Flag we suppose the Globe of the Earth to be painted , with its Axis , not placed right upwards , but somewhat leaning on one side , parallel with the Axis of the Terrestrial Globe . Now suppose a Ship , in which a Most and Flag is , were to sail round some Castle or Fort , a strong South Wind blowing , it is manifest that this moveable Flag on the top of the Mast , would not turn about with the Ship , but by the force of the Wind , would be always directed towards the North , together with the Axis painted in it . So that by that time the Ship , pursuing its course , had performed one round , about the Fort , the Flag also would have perform'd one round , about the Iron Pin to which its fastned , contrary to the motion of the Ship ; the Axis of the painted Globe of the Earth being still directed towards the same part of Heaven . X. The Great Orb , is but a Point in comparison with the fix'd Stars . The Orb , whose middle Line the Earth , by its Annual motion describes , is called the Great Orb , which with regard to the fix'd Stars is but like a Point , according to our Hypothesis , so great is the distance between the fix'd Stars and the Earth ; and therefore 't is all one , whether the Stars be viewed from the Center of this Great Orb , or from the Circumference . And thus much will be readily admitted by those who consider how rash a thing it is , to define the Works of GOD to be less August and Ample , than indeed they are ; and especially if we consider , that the Appearances can no other way be explained ; neither doth Reason oppose it , seeing that the whole Earth is but a Point , compar'd with the Sun : Which ls prov'd by this Instance , because the Sun seems to move about a Round Sun-Dial placed upon the Surface of the Earth , after the same manner as it Rolls about the Earth ; which shews , that the Diameter of the Earth is of no account in this case . XI . The Pole of the Earth declines 23 Degrees from the Pole of the Ecliptick . It is to be noted also , that the Axis about which the Earth , in a Days time , turns round , is not perpendicularly raised above the Plain of the Ecliptick , in the which , in a years time , it is whirl'd about the Sun ; but declines above 23 Degrees from a Perpendicular . The reason whereof is , because the striate Matter of the first Element , which enters into the Poles of the Earth , near to the Poles of its Axis , coming from that part of the Vortexes which constitute the second Heaven , doth in this manner inflect or turn it aside : The other Parts of the Earth having not their Pores so dispos'd , that other subtil Matter , coming from other parts of Heaven , should enter into them , and turn it another way . XII . Without the Motion of Inclination , there could be 〈◊〉 difference of Seasons . The Necessity of the Motion of the Axis of the Earth appears from hence , that without it there would be no inequality of Days and Nights , but the Inhabitants of the same place would always have the same length of Days and Nights , and the same constitution of the four Seasons of the Year ; that is , some would have all the year , Winter , others Summer , others Autumn , and others Spring . Wherefore it is of absolute necessity to admit the motion of Inclination , to salve the Appearances , and to make all things agree in Harmony . XIII . How Days and Nights come to be . Forasmuch therefore as the Earth is a great Spherical Body , and at a great distance from the Sun , its whole extension cannot be enlightned at once , but only one half of it ; and therefore when the Earth is once carried about its Axis AB in the space of 24 Hours , it makes the same part of the Earth , when turn'd toward the Sun , to enjoy Day-light ; and when turn'd away from him , to have Night . For Day is said to be in that Part of the Earth , which being turn'd to the Sun , receives its Rays ; and Night in that Part , which being turn'd from the Sun , cannot immediately receive them . And therefore it is no wonder , if the Parts of Heaven seem to arise and go down ; because by the Revolution of the Earth they are gradually discovered , and seem in order to approach towards us ; and on the opposite side to set and vanish . XIV . W●●n●e the diversity of Seasons of the Year ari●●th . And because the Axis of the Earth AB , ( as hath been said already ) about which its Diurnal Revolution is performed , doth at present decline almost 23 Degrees from the Perpendicular 1 , 6 of the Ecliptick , in which the Earth in a Years time performs his Course ▪ round the Sun ; it so is , that the Earth , in various parts of its Orb , by objecting these two Poles of the inclined Axis , more or less , turned to or from the Sun , and exposing its several parts , sometimes for a longer , at other times for a shorter Space to the Sun , doth by this means produce the different Season's of the Year , and the Inequality of Days and Nights . So that that part of the Earth which hath its Axis more inclin'd towards the Sun , enjoys Summer , as admitting the more direct Rays of the Sun , and consequently stronger and hotter : Whereas in that part which hath its Axis more turn'd away from the Sun , it is Winter , because it receives the Rays of the Sun more obliquely , and consequently more scatter'd and less agitated . And that part which continues longer turn'd toward the Sun , enjoys longer Days ; as that which is for a less time illustrated by the Sun , has shorter Days . XV. There are ●our Signs , to which w●●n the Earth app●o●c●e●h , 〈◊〉 produceth the different Seasons of the Year . This will appear more manifest , by shewing how the Seasons come to be , and how it happens that with some Inhabitants of the Earth it is Spring , with others Summer , with others Autumn , and with others Winter . Let us place therefore 4 Points , Libra ♎ , Capricorn ♑ , Aries ♈ , and Cancer ♋ , as Centers , or 4 Equal Circles , that may represent the Earth to us , placed there at divers Seasons ; the Earth with its Center running through the whole Circumference of Libra , Capricorn , Aries and Cancer in a years time , from West to East , according to the Order of the Signs . XVI . How Spring c ●m●s t● be . For it is manifest , that the Earth being placed in the Point of Libra ♎ , at the same time that the Sun is in the opposit Sign of ♈ , Spring time begins with us , who inhabitate the North parts of the Earth ; because the North Pole of the Earth A , being constituted between its past greatest Declination from the Sun , and its future greatest Inclination to it , makes , that the Sun-beams falling upon our Temperate Zone 1 , 2 , reach it only obliquely ; and therefore make the Air , yet thick and sluggish by reason of the Winters Cold , more temperate about this time of the Year . And forasmuch as both the Poles AB , about which the Earth is carried by its Annual Revolution , are constituted in the Extream parts of the Hemisphere of the Earth , that is illuminated by the Sun ; by this means it comes to pass that we , and all other Inhabitants of the Earth have equal Days and Night . XVII . How we come to have Summer , and those who ●ive in the South parts Winter at the same time . But when the Earth , in its Annual Revolution , comes nearer to Capricorn ♑ , the North Pole A , doth further enter into the Hemisphere , illuminated by the Sun ; whereas the Southern Pole B , is more withdrawn from it . By which means it comes to pass , that to those who live towards the North Pole A , the Days begin to increase , and the Heat to prevail ; whereas those who live about the South Pole B , experience the contrary . But when the Earth is come quite to Capricorn ♑ , viz. at the same time that the Sun appears in Cancer ♋ , we enjoy Summer ; because the North Pole A being a● that time most inclined towards the Sun , it makes the Sun-beams to fall directly , and almost perpendicularly upon our Temperate Region 1 , 2 , and th● Cold Region 1 , A ; and therefore produceth the greatest Heat . But to them who live beyond the Aequator 3 , towards the South Pole B , Winter happens at the same time ; because the Antartick Pole being at that time in his furthest declination from the Sun , the Beams thereof reach it very obliquely and consequently impart but very weak Light to them . At the same time the Longest Days are with us , and the Heat increaseth ; because the North Pole A continuing for a long time in that Hemisphere of the Earth which is illustrated by the Sun , makes us to enjoy the longest Days and shortest Nights . The contrary to which happens to the Southern Inhabitants , because the Antartick Pole B , is then entred into the Darkned Hemisphere ; and therefore makes , that those who inhabit the temperate Zone 4 , 5 , and the Cold 5 B , are for many Hours overwhelm'd with Darkness , and enjoy the Light but a very little Space . XVIII . How it comes to be Spring with us , and Autumn with those who live towards the South Pole. Afterwards , when the Earth having left Capricorn proceeds to Aries ♈ , the North Pole A , doth more and more decline from the Sun , towards the Hemisphere of the Earth that is cover'd with Darkness ; but the Antartick B , towards the illuminated Hemisphere , which causeth the Days to be shortned to us , that live North ; whereas those that live South , begin to have their Days and Heat increased : 'Till at last the Earth being arriv'd at Aries ♈ , both the Poles being in the Extremes of both the Hemispheres , viz. of that which is enlightned , and that which is Darkned , produce Equal Days and Nights to all the Inhabitants of the Earth . XIX . How it comes to be Winter with us , and with the Inhabitants of the South Summer . Last of all , As the Earth continues his Course from the Point of Aries ♈ , towards Cancer ♋ , the Artick Pole A by degrees begins to enter the darkned Hemisphere , and the Antartick or Southern Pole , the illuminated Hemisphere : By which means it comes to pass , that they who live beyond the Aequator 3 , begin to have longer Days ; and they shorter , who live towards the North : Till the Earth being arriv'd at Cancer ♋ , the North Pole becomes dipt 23 Degrees in the darkned Hemisphere , and thus makes Winter and the shortest Day to the Northern Inhabitants ; whereas to those that dwell in the South , it makes Summer and the longest Day . Lastly , the Earth proceeds from the Point of Cancer ♋ , to Leo ♌ , and Virgo ♍ ; till that being arriv'd again at Libra ♎ , it restores Spring to those of the North , and Autumn to those of the South . XX. Why the Seasons are every year alike . All the foresaid Seasons of the Year , as to the length and shortness of the Days and Nights , in the continual process of Years , are much alike ; because the Diurnal and Annual Revolution of the Earth , whence the Vicissitudes of Days and Nights do arise , are in all years much alike . XXI . How the Poles of the Aequator and Ecliptick come to approach to one another . However , because the two Conversions of the Earth , viz. the Annual and Diurnal , would be more commodiously performed , if they were done about Parallel Axes , the Causes that hinder this are by degrees changed ; whereby it comes to pass , that in process of time this declination of the Ecliptick from the Aequator will grows less and less . CHAP. VI. Of the Zones and their Inhabitants , and of the Climats . I. There are five Zones in the Earth ; and what we are to understand by the word Zone . THe Ancients , to distinguish the Degrees of Heat and Cold on the Surface of the Earth , did divide it into 5 Zones , viz. into the Torrid Zone , 2 Temperate , and 2 Cold Zones . By the Name Zone they understood a space of the Earth , lying between the two Tropicks ; or one of the Tropicks , and the next Polar Circle ; or between either of the Polar Circles , and the Neighbouring Pole. So that the Zones are nothing else , but different Regions of the Earth differing in Temperature , according to the Suns Nearness , or Distance . II. The Torrid Zone . The Torrid Zone , is that Space which is comprehended between the Tropicks ; the Northern part whereof reacheth 23 Degrees and an half from the Aequator ; and the other part , as far towards the South : So as that the whole Space contains 47 Degrees in Latitude ; and is therefore called the Torrid Zone , because it is scorched by the perpendicular Beams of the Sun. III. The Temperate Zones . The Zones that are placed between the Tropicks and the Polar Circles , are called Temperate ; the one of them being between the Tropick of Cancer and the Artick Circle , which is 43 Degrees broad . And this is called the Temperate Zone towards the North. The other is call'd , the Temperate Zone towards the South , between the Tropick of Capricorn and the Antartick Circle , and hath as many Degrees in Latitude as the former . IV. The Frigid Zones . The other two which are comprehended within the Polar Circles , are called Frigid or Cold : Whereof one is the Northern Frigid Zone , between the Artick Circle and the North Pole ; from which Circle to the Pole , are accounted 23 Degrees and an half . The Southern Frigid lies between the Antartick Circle and the South Pole , and is just as many Degrees in Latitude . V. The Torrid Zone is not inhabitable ▪ as was believ'd by the Ancients . The Ancients believ'd the Torrid Zone to be Inhabitable ; according to that of Ovid , — of these , the Middle Zone , Is scorch'd with Heat , inhabited by none . But Experience hath now better inform'd us ; for the Spaniards , Portuguese , Hollandors , and also the English , who have Sailed round the World , as they call it , have found the Torrid Zone not to be scorch'd with intolerable Heat , but Temperate enough , and water'd with plentiful Showers , and with frequent Rivers and Springs , abounding also with all manner of Fruit and Corn , and affording a pleasant and delightful Abode to Animals and Men , so as that People of several Nations come to inhabit there . This appears also consonant to Reason ; because the Length of the Nights , which are equal to the Days , in those Regions , doth greatly allay the heat of the Air. Neither are there wanting in this Space many Lakes , Pools , and other moist places , whence copious Vapours are raised , which afterwards coming down in Rain , do allay and temper the heat of the Sun. For tho' the Rains that fall there be but small , yet they are so frequent , as sometimes to continue for some Months together , greatly favouring the growth of Plants , and conducing to the refreshment of Men , and other Living Creatures . Which inclines me to be of Polybius his Opinion , who asserts that part of the Earth under the Aequator to be more Temperate , than that which is under the Tropicks ; because when the Sun is about the Aequator , he presently runs over the Vertical Point ; but when at the Tropicks , he continues Vertical for several Days . VI. The Inhabitants of the Torrid Zone , are in a threefold difference . There is a difference amongst the Inhabitants of the Torrid Zone : For some of them live under the Aequator , others under the Tropicks , and others again between the Aequator and the Tropicks . The Sun toucheth the Zenith or Vertical Point of all these , once or twice every Year . They who live under the Aequator , in the first place , have a Right Sphere : Secondly , They alone enjoy a Perpetual Aequinox : Thirdly , They alone have the view of both Poles : Fourthly , To them alone all the fix'd Stars Rise and Set : Fifthly , They have two Summers and two Winters : Sixthly , The Sun passeth their Zenith twice in a Year . Those who live under the Tropicks do first experience two Meridional Shadows , in a Years time : Secondly , They have but one Summer , and one Winter : And lastly , The Sun reacheth their Zenith once in a Year . They who live betwixt the Aequator and the Tropicks , have 3 South shadows in a Year ; in the next place they have 2 Summers and 2 Winters , especially if they be more remote from the Tropicks : Thirdly , The Sun passeth their Zenith twice in a Year . VII . The Inhabitants of the Temperate Z●●●● . The Inhabitants of the Temperate Zones , in the first place , have one South shadow in a whole year : Secondly , They have two Solstices : Thirdly , They have one Summer and one Winter in a year : Fourthly , The Sun never reacheth their Vertical Point : Fifthly , They have 2 Aequinoxes every year , as all those have that have an oblique Sphere , or that dwell betwixt the Aequator and the Poles . VIII . The Inhabitants 〈◊〉 the Fr●g●d Zones . The Inhabitants of the Frigid or Cold Zones , are of 3 sorts : For they either live under the Polar Circles , or under the Poles themselves ; or betwixt the Circles and the Poles . They who live under the Polar Circles , do alone enjoy a Day of 24 Hours long ; and all other things which happen to the Inhabitants of the Temperate Zones , happen also to them . They who live under the Poles , have a Day of 6 Months , to which succeeds a Night of the same length . They have never any Aequinox , and to them alone no fix'd Stars ever Rise or Set. But they who live betwixt the Poles and the Polar Circles , their longest Day in the Summer is above 24 Hours . They do not see the Sun , whilst he is in the Tropick of Capricorn . Other things they have common with those that live under the Polar Circles . IX . The difference of the Inhabitants 〈◊〉 the Earth , with respect to their situation . Another Distinction of the Inhabitants of the Earth is taken from the opposite situation of their Habitation ; and this Difference is Threefold , being distinguish'd into Perioeci , Antoeci , and Antipodes . X. Perioeci . They are call'd Perioeci , who live under the same Parallel , and the same Meridian , but yet under the opposite Points thereof . Such are those who live in the places marked 7 and 8 , and 3 and 6. Now all these have the same Summer and Winter , and much the same Temperature of the Air , and the same Length and Shortness of Days and Nights ; but have their Day and Night at a contrary time to one another : Except they be placed within the Frigid Zone , because then it may so happen , that they have the same Day and Night . XI . Antoeci . Antoeci are those that live under Parallels , that are equally distant from the Aequator , and under the same Meridian , in the same Longitude . Such are those who dwell in the Points 3 and 7 , and in 6 and 8. They have the same Noon and Midnight ; but have their Summer and Winter at opposite times : So as that the longest Day of one of them , is the shortest Day of the other . The Antoeci between the Tropicks may have the same Winter , but never Summer at the same time . XII . Antipodes . Antipodes , or Antichthones , are those who live under Parallels or Points distant the same Latitude on either side of the Aequator ; or under the Aequator it self , but yet in opposite Points of the same Meridian : Or more briefly , as Cicero has it , Antipodes are those whose steps are opposite to each other . And such are they who live in 1 and 2 , 5 and 4 , 6 and 7. The Antipodes without the Aequator , 5 and 4 , have all things opposite . Those at 5 and 4 , have Night and Day quite contrary : And all the rest have also their Summer and Winter at contrary times . There is no Point assignable on the Surface of the Earth , to which an Antipodal Point doth not answer ; and this is nothing else , but the other Extremity of the Diameter from the foresaid Point , passing through the Center of the Earth . Whence it is , that these great Varieties must needs happen . XIII . The Opinion of the Ancients concerning the Antipodes . Those who are our Antipodes , live towards the South Pole , and are yet undiscover'd what kind of People they are ; but the Antipodes of other Nations are known . For though some Great Men of Old did deny Antipodes , as supposing that if any such were , they must hang in the Air , and have their Heels higher than their Heads ; yet these are worthily derided by Lactantius , Lib. 4. cap. 14. de Falsa Sapientia ; forasmuch as the Inhabitants of the Earth , in what part soever they live , tread upon the Earth with their Feet , which every one may easily understand that considers the Earth to be Ro und . XIV . Way the Surface of the Earth was divided into Climats . But because the Distinction of Zones did not seem sufficient to the Ancients , to specifie all the diversity of the Situations of Regions about the Aequator , they thought convenient to add many Parallels , by which , as by so many lesser Zones they divided the Earth , and called them Climats , as being so many Inclinations or Deflexions from a Right Sphere . Yet there is this difference betwixt the Parallels and Climats ; that the Parallels are only of one Quarter of an Hour , but the Climats of Half an Hour . So that in whatsoever place of the Earth the Solstitial Day is one Quarter of an Hour longer than 12 Hours , that place is under the first Parallel . But if the Excess reach to Half an hour , that place is situate under the second Parallel ; or , which is the same , under the first Climat . For by Climats the Ancients understood nothing else , but large Spaces of the Earth , or Zones , between two Circles Parallel to the Aequator , equal in Latitude , and passing through every 10 th Degree of the Meridian . These are 18 in all , 9 whereof are called Northern , and 9 Southern . XV. The first Northern Clime , is that which is call'd Aethiopicum . The first Climat , from the Aequator towards the North , hath its beginning where the Longest Day is of 12 Hours , and its Latitude or distance from the Aequator is 10 Degrees ; towards the further part of which , the Longest Day is 12 Hours , 35 Minutes . It is commonly called Aethiopicum , from the Country of Aethiopia , as passing over the City Meroe . For the Custom of the Ancients was , to put the Name of some Famous place contained in it upon the several Climats . XVI . The second , Arabicum . The second Climat is that , where the Latitude is of 20 Degrees , and the Longest day of 13 hours and 12 minutes , and is called Arabicum , from Arabia Foelix , through which it passeth . XVII . The third , Aegyptiacum . The third is that where the Latitude is of 30 Degrees , and the Longest day of 13 hours and 56 minutes : And took the Name Aegyptiacum from Alexandria , the Metropolis of Aegypt , through which it passeth . XVIII . The fourth , Syriacum . The fourth Clime is that , where the Latitude is of 40 Degrees , and the Longest day of 14 hours and 51 minutes . It is called Syriacum , because it passeth through Rhodes in Syria . XIX . The fifth , Italicum . The fifth is , where the Latitude is of 50 Degrees , and the Longest day of 16 hours and 9 minutes ; and it was call'd Italicum , or Gallicum ; because it passeth through Rome and Paris , where the Longest day is of 16 Hours . XX. The sixth , Britannicum . The sixth is where the Latitude is of 60 Degrees , and the Longest day of 18 hours and 30 minutes ; and this is called Britannicum , or Germanicum . XXI . The seventh Suecicum . The seventh is , where the Latitude is of 70 Degrees , and the Longest day of 65 Days ; and is commonly call'd Suecicum . XXII . The eighth , Glaciale Boreum . The eighth is , where the Latitude is of 80 Degrees , and the Longest day of an 134 Days ; and is called Glaciale Boreum . XXIII . The ninth , Polare Boreum . Lastly , The ninth is that Space which is extended to the Northern Pole , where the Longest day is of Half a year , or of 188 Days , and is called Polare Boreum . XXIV . The first of the Southern Climats , is called Brasilianum . The first of the Southern Climats begins at the Aequator , and ends in the 10 th Degree , where the Longest day is of 12 hours , 35 minutes . It takes its name of Brasilianum , from the Country of Brazile . XXV . The second , Peruanum . The second is , where the Latitude is of 20 Degrees , and the Longest day of 13 hours and 12 minutes : And is called Peruanum , from the Country of Peru. XXVI . The third , Paraguaticum . The third is , where the Latitude is of 30 Degrees , and the Longest day of 13 hours and 56 minutes ; and is called Paraguaticum . XXVII . The fourth , Chiliacum . The fourth is called Chiliacum , from the Country of Chili , which is extended 40 Degrees towards the South ; where the Longest day is of 14 hours and 51 minutes . XXVIII . The fifth , Sylvestre . The fifth is , where the Latitude extends to 50 Degrees , and the Longest day is of 16 hours 9 minutes . It is called Sylvestre , because it is inhabited by Savages and Wild People . XXIX . The sixth , Magellanicum . The sixth is call'd Magellanicum , where the Longest day is of 18 hours and 30 minutes , and reacheth to 60 Degrees . XXX . The seventh Incognitum . The seventh is of 70 Degrees , and is call'd Incognitum , Unknown ; where the Longest day is of 65 Days . XXXI . The eighth . Glaciale Austrinum . The eighth is that , where the Latitude is of 80 Degrees and the Longest day makes 134 of our Days ; and is called Austrinum Glaciale . XXXII . The ninth , Polare Austrinum . The ninth and last is extended to 90 Degrees , where the Longest day is of 6 Months , and is called Polare Austrinum . XXXIII . O● Old t●ere were 〈◊〉 seven C●●mats , whereas now there are ●●ght●●n . Formerly there were only 7 Climes , because they contained all the Countries that were then known : But the Earth being more known and discover'd , is now distinguish'd into 18 Climats , which Astronomers call by another name , Elevations of the Pole ; and Geographers , the Latitudes of Places , or their Distances from the Aequator . CHAP. VII . Of those things which are generated in the Earth ; and first of Fountains . I. Fountains and Rivers have their R●se from t e S●● . FOrasmuch as Fountains break forth on the Surface of the Earth , and proceed from its Bowels , we must enquire in the first place , what is the Original of Fountains , and from what Principle they are derived . And this we find can be nothing else but the Sea : For seeing that many Fountains flow continually , and that the Rivers which are made by them , do without ceasing continue their Course towards the Sea , without ever increasing the same , according to that of the Wise King in the 1 st of Ecclesiastes : All the Rivers run into the Sea , yet the Sea is not full ; unto the place from whence the Rivers come , thither they return to flow again . And accordingly we may easily gather , that the Original of Fountains is from this , That the Sea-Water being driven into the Bowels of the Earth , is led up to the Surface thereof ; where breaking forth , it at last , after various Turnings and windings , returns to the Sea. II. They return to the Sea , from whence they came . And indeed , forasmuch as the Earth contains many Clefts , by which , as by so many Channels , the Water may be carried from one place to another ; there is no reason to oppose , but that Water may come from the Sea , to the bottoms of Mountains ; and that the same which break forth in Springs from those Mountains , may after various windings run again into the Sea. Much after the same manner , as we find that in Living Creatures the Blood is carried from the Left Ventricle of the Heart , through the Aorta into the Arteries and Veins , and after having finish'd its Circulation , returns to the Vena Cava , and from thence to the Heart , from whence it came forth at first . III. How the Water riseth from the Sea to the Tops of Mountains . But forasmuch as the Surface of the Earth is not even , some part of it being stretch'd out into Plains and Levels , and others rising into Mountains , which do far exceed in height the Surface of the Ocean ; we are to enquire , by what means the Water becomes raised from the Depths of the Earth , to the Tops of the highest Mountains ; as also how the Sea-Water becomes deprived of all its Saltness , when it breaks forth into Springs and Fountains whose Waters are fresh . IV. Not by the Section or Attraction of the Earth . As to the first of these , some are of Opinion that this is performed by the Earth , to which they attribute a Virtue of sucking and attracting the Water to the tops of the Mountains : After the same manner as Bread being dip'd in Wine , doth suck and draw up the Wine into it self ; or as a Sponge , sucks-up Water . But this way of explaining this Difficulty is not Rational , since Sucking presupposeth a sensible Motion in the Body that sucks ; for I cannot suck without some dilatation and swelling of my Body : Neither can it be suppos'd that the Earth can perform any such action . And as to the Instance of Bread , or a Sponge dip'd in Water , nothing can be inferr'd thence to prove , that the Earth sucks up the Water to the tops of the Mountains ; seeing that it is but a small quantity of Water that is suck'd-in by the Spongious Body ; and that that which is attracted by it , doth never run out from it . And so likewise may that part of the Earth , which lies next to the Spring , be moistned and soak'd through with the Water of it ; but this will never make the Water spring or break forth from thence . V. Nor by the pressure of the Sea-Water . Others suppose , that the Sea-Water is raised to the highest parts of the Earth , by means of that pressure whereby the surface and upper-part of the Sea-Water presseth that which is at the Bottom , and forceth it up the passages of the Earth , till having at last found an Out-let , it breaks forth on the Surface thereof . But neither can this Opinion be admitted ; for tho' the Water at the bottom of the Sea , be driven into the Cavities and open Passages of the Earth , by the weight of the Water that lies upon it ; yet can it not by this means be raised higher than the Surface of the Sea. Besides , if the Water by some Channels , or wide and open Passages , should be conveyed by one continued Channel , from the Sea to the Surface of the Earth , then it would not be fresh , but salt ; because the Salt easily gets through those places , where the Water in any quantity can pass ; and so all Springs would be as salt , as the Sea it self . VI. The Sea-Water being 〈◊〉 into Vapours , mounts upwards . We suppose therefore , that the Water in those Holes and Caves , whither it is driven by its weight , is resolved into Vapours by the Subterranean heat ; and that this Heat , by those Passages which it every where meets with , mounts it upwards , and raises it to the tops of the Mountains . To which may be added , that the Pores through which the Vapours tend upwards , are continued open towards the very tops of the Mountains , and that they more easily mount up through the said Pores , because they are supported by the Particles of Earth , than through the Air , whose fluid and soft particles , cannot so uphold them and assist their Elevation . Now that there are such Subterraneous Fires , that turn the Water into Vapours , is evident from those Fire-Vomiting-Mountains , Hecla , Vesuvius , Aetna , and others of the same nature . And tho' such Fires do not break forth from all parts of the Earth ; yet it is probable that they communicate their Heat far and near , by means of hollow Passages in the Earth , in the same manner as the inborn Heat is dispersed through the Guts and other parts of the Body . VII Condensed Vapours fu●ni●● 〈◊〉 〈◊〉 with Water . But when the Vapours are thus mounted up , and are come near the surface of the Earth , they then become condensed by meeting with the Cold parts of the Earth ; and by this means being un able to mount higher , they cling together , and are turn'd to drops of Water : And since in this state they are not able to return back by the same Passages , or Pores , because of their Narrowness , they are carried downwards by their own weight ; where many of them being united together make a Subterraneous Rivulet ; and many of these Rivulets gather'd together make a greater , which breaking forth out of the Earth , constitutes a Living Fountain or Spring . An Example whereof we have in Chymical Distillations ; where , by the means of Fire , many Vapours are driven up the Alembick from moist Bodies , which are condensed in the cool Head of the Still , and being united into Drops , run down the Neb thereof . VIII . What Springs or Fountains are . So that Springs are nothing else , but Sea-Water , which being by its own weight driven to the bottom of Mountains , is there changed into Vapours by the inward heat of the Earth , and again condensed into VVater by the Coldness of the Air , or that of the tops of Mountains ; whence these run down , according to the declining of the Passages that convey them , to the open place they have made for themselves on the side , or at the foot of the Mountains . IX . Why some Springs are dried-up in Summer . Some , it may be , will object : If it be true that Springs have their Rise from the Sea , whose VVaters being resolv'd into Vapours , by means of heat are again changed into VVater ; how comes it to pass that some Springs are altogether dried up in Summer time , and do quite vanish by extream heat , since it cannot be question'd , but at that time many Vapours mount up from Subterraneous places , and that likewise there is Cold enough about the surface of the Earth to condense them . X. Answer . I Answer , That these Springs which are subject to dry up in Summer , do for the most part owe their Original to Rain and Snow , which running through the Clefts of Rocks , do afterwards insinuate themselves through the Pores of the Earth , and drop down into some hollow places , and being there resolv'd into Vapours , by the Heat lodg'd in the Bowels of the Earth , meet with some proper place , by the Coldness whereof they become condensed , and so discharge themselves through some open passages on the surface of the Earth . Hence it is , that after long continued Rains we see many New Springs arise , which afterwards by degrees vanish , except more Showers succeed and fill those hollow places of the Earth from whence they proceeded , and supply Matter for a new breaking forth of VVater . XI . Of the various kinds of Fountains . Whence we may distinguish Fountains into several kinds , according to their different ways of Flowing , Failing , or Duration ; and so Springs or Fountains , are either Temporal or Perpetual : Temporal , are those that do not run continually : Perpetual are such as spring without ceasing . Which are again divided into clear and pure Fountains , falling down by drops , or gushing out with a stream ; or mixed , being such as are impregnated with Salt , Sulphur , Bitumen , or Jews Lime , and the like . XII . How Wells come to be generated in the Bowels of the Earth . VVells are furnish'd with VVater much after the same manner as Springs are : For after that the Vapours of VVater have been raised to the surface of the Earth , they are by the Coldness thereof changed into VVater ; which afterwards wandring under Plains and Mountains , without being able to mount up to the surface of the Earth , are there turn'd into VVells . Now the reason why VVell-water doth not ascend higher , is , because VVater cannot mount up above the place of its first Rise ; for being come up to that pitch , it is equally pois'd , and so can rise no higher . Another Reason also may be , because VVells , for the most part borrow their VVaters from Rivers , Lakes , and Pools , not far off : Or if they receive their VVaters from the Sea , the said VVaters being drained through the Earth , run together into one and the same place . XIII . Why Spring and Well-water is fresh . Hence it is that Springs and Wells , tho' they proceed from the Sea , yet their Waters are fresh , whereas the Sea-water is salt . The Reason whereof is this , because the Sea-water , consisting of fresh and salt Particles , whereof the fresh only are turned into Vapours , and carried upwards , leaving the salt particles behind , it is plain that their Water must be fresh . For the salt Particles , being stiff and inflexible , can neither be changed into Vapours , nor pass through the winding and bending pores of the Earth . The Water therefore of Wells and Fountains is fresh , because the Sea water being drain'd through much Sand or Earth , is depriv'd of its stiff saline Particles , and so becomes fresh . XIV . How it comes to pass , that Salt water is found in some Wells . If any Man enquire how it comes to pass , since only fresh Water is drained through the Earth , that notwithstanding much Salt should be found in some Wells , at a great distance from the Sea. XV. The Answer . I Answer , That this may happen , because the Passages of the Earth in some places are more wide and open , through which the Sea-water passing freely , may reach those Wells , without leaving its Saline particles behind it : Or , because the surface of the Sea may lye level with the bottom of those Wells ; or likewise , because where the ways are wide and open , the particles of Salt are carried upwards by the particles of Fresh water . Of which this is a confirmation , because in some Mountains are found vast lumps of Salt grown together like great Stones : For the Sea-water being got up thither , whilst the particles of Fresh-water mount still higher , the Salt is left alone in those Cavities it meets with there , and fills them up . XVI . Of Fountains that Ebb and Flow. Some Fountains are famous for their ebbing and flowing , like the Sea ; yet not all in the same manner . For there is one at Cadiz , and another at Bourdeaux , that imitate the motion of the Sea , and ebb and flow at the same time with it . There is another in Spain which ebbs when it is flood at Sea , and flows when there is an Ebb-tide at Sea. XVII . The Cause of these ebbing and flowing Fountains , is the Sea. The Cause of this ebbing and flowing in Fountains cannot be attributed to any thing , but to the Sea-tide ; by means whereof the Sea entring into some Subterranean passages , drives up the Water as high as it self riseth . But the Reason why these Springs variously imitate the Sea-tide , is to be deduc'd from the difference of the passages through which the Water is convey'd : For if these Channels be strait without windings , or if the distance from the Sea be small , the Fountain flows at the same time with the Sea , and falls again when the Sea ebbs . But if the Water be convey'd to the Cavities of Fountains , through many crooked and winding passages , it may so happen that the Fountain may not swell when the Sea flows , nor fall when it ebbs ; but quite contrary may swell when it ebbs , and sink when the Sea flows ; because the Water having so many winding passages to go through , much time is thereby lost , so that by that time the water of the Fountains begins to swell , the Sea begins to ebb . CHAP. VIII . Of Metals and Minerals . I. What Metals are . MEtals are Bodies dug out of the Earth , Heavy , Hard , and Fusible by Fire , hid in the Inward part of the Earth , and there generated by the heat of the Sun , and subterraneous Fires . Such as are Gold , Silver , Copper , Iron , Tin , and Lead . II. Of what Parts the Metals are compounded . The Particles which compose Metals , are Salt , Oil , and Earth ; which being mingled together , and meeting in the long and branch-like Pores of the inward parts of the Earth , are in the same so straitly link'd together , that Art hath not as yet found out any means whereby to separate them . III. Which be the pure Metals . Some of these are called Pure Metals , others Impure : Pure Metals are those , which compar'd with others , have been excocted or digested to a greater degree of fineness and perfection , by means of the Solar and subterraneous Heat ; such as are Gold and Silver . Gold is the most heavy and most perfect of all Metals , very ductil , consisting of parts of equal Fineness and Heaviness , and being more heavy than the particles of Fire , cannot be carried away by them : Which is the Reason why Gold , when it is melted , loseth nothing of its weight , as having no Dross , which by the Action of the Fire might be separated from it . Silver is a Metal in Fineness and Perfection inferiour to Gold , heavy and solid , less ductil than Gold , and which being melted in the Fire , loseth something of its weight ; more especially that which by the agitation of the Fire is turned to Dross . IV. Which the Impure . Impure Metals , are those whose Principles are not so mature and refin'd , nor so fix'd and pure . Some of these , because of their impure Earthy substance , are made Red-hot before they can be melted ; as Copper and Iron : Whereas others of them , because of their abounding Moisture , are melted before they become Red-hot ; as Tin and Lead . V. The Principles of the Chymists examined . To the end that the Nature , not only of Metals , but of Minerals also , may be the more clearly and distinctly known , it will be fitting that we know before-hand , what we are to understand by the Active Principles of the Chymists ; and what the Philosophers mean by Salt , Sulphur , and Mercury . VI. What we are to understand by the word Salt. By the Name of SALT , we understand a sharp Juice , consisting of slender and stiff particles , which being intercepted in the Pores of the inward part of the Earth , are beaten or forged into little Swords : For as a round Rod of Red-hot Iron , is by the frequent stroaks of Hammers beaten into a longish thin Plate ; so those particles , by being dash'd and rubbing against the hard Sides of the Pores of the Earth , are form'd into such Figures . Wherefore Salt is nothing else , but a sharp Juice , consisting of slender , stiff and sharp Particles . Which , if it be volatil and very bitter , is called Salt Armoniack ; if it be more fat and inflammable , growing to Walls and Rocks , 't is called Nitre and Saltpeter ; if it be found in Mines and Mineral-waters , Allom ; if it be joyn'd with a Metallick matter , and a most sharp and subtil Mercurial Juice , 't is called Vitriol . VII . What Sulphur is . By SULPHUR we understand , the very soft amd minute Branchy particles of Fat and Oily matter . And that such particles abound in Brimstone , we can demonstrate by this that it is very inflammable ; for it is evident , that soft and thin particles , are the first of all others put in motion , and snatch'd away by the Fire . Sulphur therefore is a Mineral Juice , consisting of the most soft and minute Branch-like particles of Fat and Oleaginous Matter , easily inflammable , and generated in the Caverns of the Earth . VIII . What Mercury is . By the Name of MERCURY we understand Quicksilver , or an opake and ponderous Liquor , consisting of thick , slippery and smooth particles ; whose Nature shall be explained hereafter . IX . The number of Metals . Metals are commonly reduced to six species , as was before mention'd , viz. Gold , Silver , Copper , Iron , Tin and Lead . To which some joyn Mercury or Quicksilver , which tho' it be liquid in its Natural state , and Proteus-like changeth it self into all forms ; yet may it be made solid , and that several ways ; as when it is held over the Fumes of Molten-Lead , &c. The Astrologers seem to favour this Opinion , viz. That Quicksilver is a Metal , who , as they appropriate Gold to the Sun ; Silver to the Moon ; Iron to Mars ; Copper to Venus ; Tin to Jupiter ; and Lead to Saturn ; so they attribute Quicksilver to Mercury , and do own its Virtue to be derived from the Influences of that Planet . X. The various Juices that are in the Bowels of the Earth . To the end we may more clearly discover the Original of Metals , it will be of use to suppose , that in the Inward part of the Earth there are certain fluid Bodies , whose particles do not stick so close together , but that they may be easily dissolved : Such as are some Earthy Juices , which being generated in the deepest Bowels of the Earth , and consisting of the thickest particles of the upper part thereof , do fall down thicker by the force of the Globuli of the second Element , which by pressing them makes them heavy , and by passing through the Pores , wherewith they abound , somewhat agitates and makes them less , and so reduceth them to two kinds of Figures . For the Particles whose Matter is more solid , as those of Salt are , being intercepted , and , as it were , hammer'd in those Pores , of round and stiff , are made plain and flexible : Much after the same manner , as we have said , that a Rod of Red-hot Iron is hammer'd into a thin longish plate . And forasmuch as these particles , being agitated by the force of Heat , do this way and that way creep through these pores , by dashing and rubbing against their hard Sides , they become sharp like so many little Swords , which then constitute sharp , sourish , and corroding Juices . But the more soft particles , as are those of Fresh-water , and the like , being in the said pores wholly crush'd and bruised , are reduced to so great a thinness , that by the Motion of the first Element , they are divided into many very small and extreamly flexible little Boughs , which lying upon one another , are moved by a slow and creeping motion . XI . Metals are formed in the inward parts of the Earth . Forasmuch therefore as Metals are solid and heavy Bodies , it is evident that they cannot consist of the outward Crust of the Earth , which is softer than the other parts . For tho' the uppermost part of the Earth consists of Ramous or Branchy parts , which are firmly joyn'd together ; yet because there are many Intervals between them , which may be taken up by the Air , or other Bodies , and by their agitation are an obstacle to Solidity , which is the Property of Metalline Particles , it is necessary that they should be generated in the more inward parts of the Earth , which are more close , hard and compact . So that it seems probable that these Metals are hid , and cannot be reached or come to , by reason of the Depth of the Earth , and the store of Water that is about them , which those that go to search for them cannot fail to meet with . XII . How the Particles of Metals are conveyed to the outward part of the Earth . But seeing , that besides the Vapours which exhale from the Waters that lye hid under the Earth , there are also many sharp Spirits , and oily Exhalations ; and likewise Vapours of Quicksilver , which can carry along with them , from the inward part of the Earth , the particles of other Metals , and with them ascend to the outside of the Earth ; by this means these Metalline Particles being brought to the surface of the Earth , do there stop between the Sand , and constitute Veins of several Metals . For it is probable , that the Reason why any Metals come within our reach is , because the foresaid sharp Juices flowing through the passages of the inward parts of the Earth , do separate some of its particles from their fellows , which being wrapt up in some oily Matter , are afterwards easily carried upwards by Quicksilver rarified by Heat , where they constitute several Metals , according to the diversity of their magnitudes and figures . XIII . The distinction and diversity of Metals , depends on the difference of their Parts . For nothing else is required to the Distinction of Metals , than the changing of their parts , or a different ranging of them : Because Bodily things , whose parts are of the same bigness , and alike ranged , are to be accounted the very same things ; their distinction only proceeding from the various contexture of their Parts , as when by the accession of new Parts others are thrust out of their places , or they become otherwise ranged . And thus those particles that have long and round , as also smooth and slippery Figures , which because of their weight lye one above another , and are moved only by the Matter of the First Element , that fills up the Spaces between them , do constitute Quicksilver . For this is nothing else , but a very heavy and opake Liquor , consisting of such thick Particles as are long , and round like a Pillar , and very smooth ; which tho' by reason of their weight they lye one upon the top of another , yet are easily moved by the Aethereal Matter that fills their Pores . And so likewise those Parts which are so firm and fix'd , as that they cannot be changed by any Fire , or consum'd by any acid Spirits , constitute Gold. Thick and Branchy Particles , whose surfaces lye close together , and whose Pores are only penetrated with the striate Matter , make Iron . And so for the rest of the Metals , which derive their distinction from the different magnitude and figure of their Parts . XIV . Transmutation of some Metals is possible . For this Reason some have believed the Transmutation of Metals to be possible , since it is notorious that Iron may easily be changed into Copper : For if Iron be cast into Copperas or Vitriolick Water , its outside is thereby turned Red , which Red powder being frequently scrap'd from it , and melted down , becomes true Copper . The same Transmutation is also effected by some Fountains ; as by that which AGRICOLA mentions , near Smolnitz , the Water whereof being derived into three Channels rang'd in order , in which pieces of Iron are laid , they are thereby changed into Copper ; and the small scales of Iron are so corroded by this Water , as to become like Clay or Dirt : All which afterwards being melted down , becomes pure and good Copper . It is manifest also that Quicksilver may be chang'd into another Metal . For if after you have reduc'd Lead , or Litharge , to Ashes , you pour the Flegm of Vinegar upon it , and afterwards pour some drops of this Vinegar upon Quicksilver dissolv'd in strong Water , it will presently be precipitated to the bottom of the Vessel in the form of a Powder , which being melted down becomes Lead . XV. It is morally impossible to make Gold. But the Question is , Whether Imperfect Metal , by Example Quicksilver , can be turn'd into Gold ? This the Chymists confidently assert , and take for their Vouchers , RAYMUND LULLY and ARNOLDUS de Villa Nova ; who , they tell us could do as much . But I take all this to be no more than Lies and Stories : Or if ever they did make Gold , that this Effect was not to be attributed to their Art , but to meer Chance . And indeed it is a thing as unlikely , as if a Man having broke his Hour-Glass , should so dexterously throw the Sands of it upon a Table , that the grains of it should be ranged into the figures of such Letters as should make up some Verses of Ovid's Fastorum . For since we are ignorant of the precise bigness and figure of those Particles that enter the Composition of Gold ; as well as of the way of knitting them together , so as to make one Body of them ; we may well conclude , that to make Gold is a thing morally impossible . XVI . Ductility is a Property of Metals . It is a Property of Metals to be Ductil , and more especially of Gold , a small quantity whereof may be beaten or drawn out into a vast extent . For out of one Broad piece of Gold , a vast number of Leaves may be beaten , 5 or 6 whereof are sufficient to cover a piece of Silver , of a Cylindrical Figure ; which being drawn into a fine Thred , the Gold is coextended with it , there being no part of the Silver-thred to be seen which is not gilt . The reason of this Ductility in Metals is , because the particles of Metals are of a Longish figure , and are so disposed , that they lye upon one another according to their whole surface ; which makes , that when they are prest under the Hammer , or in Drawing , they fall down sideling , and joyn side to side without any separation . Thus it comes to pass , that Metals under the Hammer , may be extended into length and breadth , still retaining the firm cohaesion of their parts ; and the same is the Cause of their ductility into Threds . XVII . Metals are subject to Rust . Metals are subject to Corruption by Rust , and more especially Iron . Which is an Argument , that its particles are not more solid than those of other Metals , tho' they be Thicker ; but that it abounds with Pores . And because these Pores after Infusion grow less , therefore it is that Steel is not so easily penetrated by other Bodies , as Iron , and consequently , less subject to Rust . Now Rust is nothing else , but a perturbation of the Parts of Metals , caused by the Exhalations of a greatly agitated Sulphureous Liquor , the particles whereof thrust themselves into the Pores of Metals , and stop the Orifices of them . XVIII . The Sun is the Efficient Cause o● Metals . The Efficient Cause of all Metals is the Sun , whose heat pierceth through all the Passages and Pores of the Earth . For tho' the Action of Light be nothing else , but a kind of Pression , whereby the Sun pusheth the subtil Matter to Right Lines , that reach from his Body to the Earth ; yet the Terrestrial particles being agitated by his heat , do continue in their motion , except some intervening Cause do chance to hinder them . Hence it is we perceive , that the Heat which the Light hath left upon the surface of the Earth , doth continue for some time ; so that it is no wonder , if from thence by degrees it proceeds to the Bowels of the Earth , because the Terrestrial parts that are struck by the Sun-beams , do move those that lye next to them , and they again their Neighbours , till the Heat at last be derived to the most Inmost parts of the Earth . After the same manner as a mans Head cover'd with a Hat , tho' it be not enlightned by the Sun , yet is sensible of its heat , even after that the Sun-beams do no more beat upon it . And thus much shall be sufficient to have spoken of the Nature of Metals , their Original and Affections ; we proceed now to the Minerals . XIX . What Minerals are . MINERALS , are Bodies made up of Salt , Sulphur and Mercury , mingled in a certain proportion with Aqueous and Terrestrial particles , and excocted or brought to perfection by means of Subterraneous fires , or the Sun's heat , and digg'd cut of the Mines of the Earth . Wherefore also they are called Fossils . XX. How many sorts of Minerals there are . There are Three kinds of Minerals : 1. Mineral , or Coagulated Juices : 2. Mineral Earths : 3. Stones . XXI . Mineral Juices . Coagulated Juices are Mineral Bodies , compounded of sharp and oleaginous Juices , mingled with a more gross Earthly Matter , endued with a strong taste or smell , and easily soluble in Water or Oil. The chiefest of this kind are Salt and Sulphur . XXII . Mineral Earth . Mineral Earth , is a Body dug out of the Earth , consisting of Terrestrial Particles , joyned with a tough and viscous Humidity , reducible to Powder , and soluble in Water , so as thereby to be turn'd into a kind of Clay . Wherein it differs from Mineral Coagulated Juices , which are wholly dissolv'd in Water , and are not turn'd into Clay by admixtion of the Aqueous particles . XXIII . The various kinds of Mineral Earths . These Mineral Earths are various , according to the diversity of the Particles whereof they consist ; or of the Juice . whereby their Parts are joyned together ; as also of the Country where they are found . For if the Matter be very tough , ropy and unctuous , it makes Potters-Clay ; if it be tough , white and dug up in the Isle of Crete , it is Chalk ; if in the Isle of Samos , Samian Earth ; if a yellow Colour , Oker ; if Red , and found in the Isle of Lemnos , Lemnian Earth , and Sealed Earth , because it was used to be sealed with the Seal of Diana's Priest ; if it be of a pale Red , and digg'd in Armenia , 't is call'd Armenian Earth , or Bole. What Stones are , shall be delivered in the next Chapter . XXIV . In what part of the Earth Minerals are produced . Minerals are not generated , like Metals , in the Inward parts of the Earth , where they have the whole weight of the Earth lying upon them ; but about the surface of it , where its Parts are separated by infinite Chinks and Crevisses , by which they give a free passage to Vapours and Exhalations , and to other particles of that Matter , which the Heat contain'd in its Bowels hath put into motion . And forasmuch as it is peculiar to Exhalations , to mingle themselves with the smallest particles of the Earth they snatch along with them , they by this means come to form certain little Lumps or Masses , which after various agitation acquire also the same motion ; but that ceasing , they are all at last brought to a state of Rest , being cloathed with a roundish Figure . And after this manner 't is probable that the Grains of Sand are formed ; which are Heavy , because they are compacted of Terrestrial Matter ; Hard , because they are without motion ; and Transparent , because they have Pores that transmit the Globuli of the second Element to right Lines , in the very same manner as they were moved , before that the Particles of Sand were yet Coagulated . XXV . The Pellac●d Grains of Sand being heaped together , make an Opake Body . Tho' every single grain of Sand be transparent , nevertheless where many of them meet together , so as to make a Heap , they constitute an opake Body ; because in this state they cannot give a free passage to the Light , seeing that each surface reflects some Rays of it . Thus the Powder of Glass is not Transparent , because the various particles of Glass cannot have their pores so corresponding with one another , as freely to transmit the Light. Thus the Grains of Sand , especially those of the Indies , when beheld through a Microscope , be transparent , and resemble Diamonds ; yet when they lye in heaps , they can no longer give free passage to the Light , and therefore constitute an opake Body . XXVI . How Potters Clay differs from Sand. Potters Clay , notwithstanding that it is tough and fat , yet is produc'd much after the same manner as Sand ; only with this difference , that the Grains of Clay are much less , which make their Intervals not to let in water so readily , nor indeed without some force . XXVII . The reason of the difference of Clay in several parts . If the Particles of Salt and Oil , which continually ascend from the Inward parts of the Earth , were always like one another , we should every where meet with the same kind of Sand and Clay : But it being very probable , that the said Particles of Salt and Oil , are not in all places the same ; it is to be of no matter of Wonder to us , that the Clay and Sand likewise is not always the same , but differing in Colour and the Magnitude of their Parts . CHAP. IX . Of the Generation of Stones , Common and Precious , and of their difference and distinction . I. What Common Stones are . STONES are Mineral Bodies , hard , and compounded of a petrifying Juice , and Terrestrial Particles , not subject to Fusion , but Calcination by Fire ; nor malleable , but breaking to pieces under the stroak of the Hammer . These , according to the Purity or Impurity of the Matter whereof they consist , are divided into Common and Precious , which are either generated in the Bowels of Animals , or without them . II. New Stones are daily generated in the Earth . Some are of Opinion , that there are no New Stones produced , but that all of them were created at the Beginning . But Miners assure us to the contrary , who often find Stones in those places , where before was nothing but Sand or Clay . Whence it is obvious to conclude , that both these are the matter of Stones , and that of the particles thereof variously joyned and mingled together , they are compounded . For tho' things made of Sand be hard , and cannot be softned ; yet this nothing hinders , but that by the help of some Terrestrial matter , filling their Pores and Intervals , they may so hang together , as to constitute Stones . Thus it frequently happens , that Waters running through the Earth , do carry away with them some small particles of the Stones through which they run ; which water coming afterwards to places where its Current is very slow , may give occasion to those particles to unite together , and constitute a Stone . III. A twofold Rise of Stones . Stones may be made of Sand these two ways ; first , out of dissolved Sand , as when Sand dissolved in any quantity , is afterwards hardned . And the Stones thus formed are transparent , as the single grains of Sand are , and are of various figures , according to the Compression of the Bodies that are lying about them . The other way is , when Stones are made of solid Sand ; as when a great heap of grains of Sand , by the intervening of some Exhalation , do grow together : This way all opake and rough Stones are made , which are proper for the grinding of Iron , and polishing of other Stones . IV. That there is such a Matter wherewith the parts of Stones are knit together . It is not to be doubted , but that much of this Matter is sublimed towards the surface of the Earth , in the form of such Exhalations as accompany the rising Vapours . This is evident in many Fountains , which notwithstanding that the water of them being very clear to the Eye , yet contains great store of them , which meeting and joyning together in some Parts , become sensible . Thus there is a River in Avergne in France , which doth so abound with these Exhalations , that the Channel of it is become Stony , swelling by degrees higher and higher . In like manner there are found some Springs which cover the Channels and Conveyances by which they pass , with a Crust of Sand-stone . And there is one at Rome , which stopt the Pipe , through which its water passed , with Alabaster . V. How Marble is formed . The production of Marble doth not at all differ from the production of other Common Stones ; save only that the Clay whereof it is made consists of lesser particles , and hath straiter Pores , which for that Reason are more easily fill'd with those Exhalations that stick to the Sides of them . And this makes the Composition of Marble more acurate , and the Texture of its parts more close and compact , than the common mixture of Stones is . Which may be easily gather'd from the smoothness of its surface , seeing that the Roughness of Sand-stones and Pumice-stones , and other such like , proceeds only from their Cavities . Now Marble is polish'd with Sand , by the rubbing whereof its prominent particles are worn away . In this Polishing , Water also is made use of ; which being mix'd with the Sand , doth by this means more easily insinuate it self into the pores of these Particles , that are to be rubb'd off . There are several sorts of Marble , some being White , others Black , some Transparent , and some Opake ; all which diversity proceeds from the various Contexture of their Parts . VI. Some Stones are Diaphanous , others Opake . For Transparent Stones are generated , when the Exhalations and Vapours being first changed into Juices , in the Chinks or Cavities of the Earth ; afterwards by the departure of those fluid Particles , do come nearer together , and by degrees so cleave together , that the Globuli of the second Element have free passage through their pores , in order to the Transmission of the Action of Light. And on the contrary Stones become Opake , when the Vapours that are shut up in the narrow Chinks and Clefts of the Earth , are there stopt , and become so mingled with the Earthy particles , that the pores , in many places , are not wide and open enough to transmit the Light. VII . Several kinds of Common Stones . There are many kinds of Common Stones , viz. Marble , Flint , Touch-stone , Whet-stone , Pumice , and Sand-stone ; Stones in the Bladder or Reins ; Talck , Load-stone , &c. Of Marble we have treated already . VIII . Flint . Flint is almost the hardest of all Stones , and is commonly Round , and somewhat Flat , like Lentiles , and being dash'd against another , divides it self in two little Hemispheres . Because of its extream hardness it is apt to leap back or rebound , since it neither yields , nor can be easily reduc'd to Powder . It s production is much like that of Marble , being found buried in Clay , as in its Matrix , whose pores being fill'd with the said Exhalations , procure it the great Hardness it hath . IX . Touch-stone . Touch-stone belongs either to Marble or Flint . It admits of the most perfect Polishing , and is sometimes found very exquisitely smooth'd by Nature . For which Reason also it is very hard , and doth not admit any Division without difficulty . X. Whet-stone . A Whet-stone has a Roughness , which conduceth to the Smoothing and Grinding of Glass and Metal ; in which Operation Water is sprinckled upon it : For the Water being pour'd over it , smooths and makes even the more sensible Asperities of the Whet-stone , and hinders it from acting too boisterously upon the Body that is to be Ground . XI . Pumice-stone . Pumice-stone is a Stone of an Ash●colour , full of great Cavities like a Sponge , into which it admits Moisture , but soon lets it go again . It is made use of for the Polishing of Marble ; for by its Roughness it reduceth the prominent parts of Marble to smoothness . XII . Sand , or Grave●s●●ne ▪ The Sand-stone is formed in Holes , from whence the intercepted Matter derives its smoothness . It s Colour is white ; because its particles are so dispos'd , as to reflect or send back the Rays of Light , in the same manner as it hath received them . Wherefore also it appears in the likeness of Froth . Tho' it be very Light , yet doth it not swim upon the VVater ; but the moisture entring into its pores , it sinks immediately . XIII . Talck . Talck is a Stone that is Transparent , except it be too thick ; for then it is opake , by reason of the multiplicity of Surfaces heap'd one upon the top of another , and whose pores do not correspond exactly enough for the Transmission of Light. XIV . Stones form'd in the Body of Man. A Stone in the Body of Man , is formed in like manner as other Stones are ▪ viz. by the Coalition of Sand , by means of some slimy Matter in the Reins or Bladder . It commonly inclines to a reddish Colour , and according to the different disposition of the Sand , is either smooth or rough ; as we see that Stones that lye at the bottom of Rivers , are some of them smooth , and others very rough and uneven . XV. What precious Stones are . Precious Stones , are Bodies small in bulk , of a hard and strong substance ; which either are Transparent , or of a lustrous Colour . XVI . How precious Stones are generated in the Earth ; and first of such as are transparent . Gems are generated , not of a company of Sands grown together , as the Common Stones are ; but of a certain fluid Matter , which only constitutes one grain ; provided there be but so much of it , as to make some sensible Bulk , and such as is sufficient for a pellucid Body . Because that when the Exhalations that in the Clefts and Cavities of the Earth are gather'd into a Drop , by the loss of their slippery and fluid Particles , begin by little and little to cleave to one another , the Globuli of the second Element can on all sides freely and strongly enough pass through their pores ; which could not be , in case they did consist of many grains : For how soft soever they might afterwards come to be , yet they could never be so joyned , but that there would be some Interruption , which would spoil their Transparence . And therefore these kind of Exhalations , according to the different degrees of their Hardness , and the various disposition of their Parts , are turned into Stones ; as into Crystal , Diamonds , and the like . There is no difference betwixt a Crystal and a Diamond , save only that the particles of a Diamond are more closely knit together . XVII . Of Colour'd Gems . But if it so happen , that any Metalline particles be mix'd with this matter , that is common to all precious Stones ; this causeth some modification of the Light that passeth through them , so that it produceth in us the sense of divers Colours ; and thus instead of a Diamond or Crystal , we shall have several kinds of precious Stones , as Saphirs , Chrysolits , Jaspars , Agats , and the like . XVIII . The several kinds of Precious Stones . Precious Stones therefore are divided into Transparent and Colour'd . The transparent are Crystal , the Diamond , and the Beryl , which have their Parts so ranged , as to leave Intervals , through which the Globuli may transmit their Action to Right Lines . The most precious of these is the Adamant , being of an exceeding Hardness , because of the close coherence of its Parts . Yet is not its Hardness such , as to be of proof against the stroaks of a Hammer , as some relate , seeing that it may be grinded into Powder . So likewise the Common Story of its becoming soft in the Blood of a Goat , is no better than a Fable ; and that it cannot be hurt by the Fire : All which Experience hath condemn'd of falsity . XIX . Crystal . Crystal is of an Hexagonal figure ; for every particle of Crystal being surrounded and kept in by six others , it must necessarily admit of a six Corner'd figure . There are some that affirm , That Crystal by the strength of the Fire can be melted ; whereas others assert the contrary , and that after utter Diligence used , they could never bring it to Liquefaction . Some of the Ancients believ'd , that Crystal was the effect of extream Cold ; but this is a vain Imagination , for all confessing Crystal to be a Stone , we cannot attribute its Coagulation to Cold. DIO DORUS was better advis'd , who Lib. II. tells us , that Crystal is a Stone coagulated out of pure Water , not by Cold , but by the virtue of a Divine Fire . XX. The Beryl . The Beryl hath a great resemblance with Crystal ; it is chiefly found in the East Indies , according to PLINY , at least the best and most lustrous are found there . For those we have from Babylon are of a kind of greasy Colour ; yea , it is said , that there are Beryls found in Germany of the Colour of Oil. XXI . The Carbuncle . The most Noble of all the Colour'd precious Stones is the Carbuncle , of a Red colour , and resembling the flame of Fire . XXII . The Chrysolite . The Chrysolite is a Gem of a Golden colour , whence it took its Name ; transparent and very hard . XXIII . The Hyacinth . The Hyacinth is of a Yellow colour , resembling the lustre of Gold. XXIV . The Emerald . The Emerald is the most precious of all Gems , and well nigh the most Brittle too , for it is easily broken . It is of a Green colour , like Grass . XXV . The Topaz . The Topaz approacheth to the Colour of an Hyacinth ; tho' some do say it is of a Green colour . It is said , that when it is laid under the Sun-beams it represents a Star ; which is rather the effect of its form and colour , than of any peculiar Nature . XXVI . The Turcois . The Turcois is a precious Stone , of a Sky colour mixt with Green. XXVII . The Amethyst The Amethyst is much of the same softness as Crystal , and is found in the same place . It is of a Violet Purple colour , very grateful to the sight . XXVIII . Morion . The Gem Morion , is of a very Black colour . XXIX . The Agate . The Agate admits of all Colours , as having white , black , and other variegated stroaks in the midst of it . And by this diversity of its colours , it is represented of divers kinds , by those who have a mind to deceive the Buyers . XXX . The Jasper . The Jasper is a Green stone , with the mixture of Bloody spots . The best are those that come from the East . XXXI . The Ruby . The Ruby takes its names from the glorious Red colour wherewith it sparkles . XXXII . The Granat . The Granat is also of a Red colour , but with some mixture of a Yellow ; so called , because of its likeness to the grain of a Pomgranate . XXXIII . The Onyx . The Onyx is the Alabaster of the Ancients , but much more precious than that which we commonly call so ; it resembles the colour of the Nail of a a Mans Hand , with some Veins running through it , which imitate the colour of a Jasper . XXXIV . The Saphire The Saphire exceeds the other Gems in Beauty , and is of a Sky Blew colour , resembling the lively colour of the Sky , by its wonderful lustre , and extraordinary perspicuity . It is the hardest of all precious Stones , next to the Diamond . XXXV . Of other Stones that are counted amongst the Precious , 〈◊〉 are not 〈◊〉 . There ●re also other Stones which are reckoned amongst the Precious , as the Pezar , or Bezoar , Pearls , Chelidonius or the Swallow-stone , &c. But these do not seem to deserve the name of Gems ; because the Pezar , which is found in the Stomach of a Beast called Pezain , is too soft to deserve that name . Pearls which are found in the shells of Oysters and Muscles are of too dark and faint a colour , and without transparence . And the Swallow-stone , which is found in the Stomach of Swallows , hath nothing in the least in it that resembles a Gem. CHAP. X. Of the Load-Stone , and Electrical Bodies . I. Of the Original and Composition of the Load-stone , and what its Nature is . THo' the Load-stone be reckon'd amongst Common Stones , yet doth not the Earth produce any thing more wonderful than it , the effects whereof , as they were matter of Astonishment to the Ancients , so do they still puzzle the Brains of the Greatest Philosophers . This wonderful Stone is compounded of thick and branchy Particles of the Earth , approaching to the Nature of Iron ; since there is no Iron Oar , which hath not much Earthy matter joyn'd with it ; nor any Load-stone , which doth not enclose more or less of Iron . Yea , so great is the affinity between the Load-stone and Iron , that they are both digged out of the same Mines ; and if we will take the word of GILBERTUS , the best Iron is got out of the Load-stone . II. The Definition of the Load-stone and Iron . The Load-stone therefore is a Stone , resembling the Matter that constitutes the Middle part of the Earth , which having Pores from one of its Poles to the other , sitted for the free passage of the striate Matter , can turn it self towards one of the Poles of the Earth . It is said to resemble the Middle part of the Earth ; because the Load-stone , of all other Stones , seems to be of the same make and composition with the Middle part of the Earth . By the striate Matter mention'd in the Definition , we are to understand the Matter of the first Element , twisted in the manner of the Tendrils of a Vine or Ivy-Bush . It is said , that it can turn it self to one of the Poles of the Earth ; because a Load-stone being left without impediment , always turns it self to the Poles . Iron is a Metal of Affinity with the Load-stone , endued with Pores , accommodated for the free passage of the striate Matter , by which means it is able to turn it self to the Poles of the Earth . III. The Virtues of the Magnet may be referr'd to three Heads . The Virtues of the Load-stone may be referr'd to three Heads ; whereof the First is , that being in a free position without any thing to hinder it , it spontaneously directs it self to the Poles of the World. Secondly , That it draws Iron or another Magnet to it self , and sometimes also repels the same . Thirdly , That by a Touch it communicates to the Iron , as well the virtue it hath of pointing to the Poles of the World , as that whereby it draws Iron . IV. The Celestial matter is the Cause of all the Motion in the World. For the better understanding of these Virtues of the Load-stone , we are to suppose in the First place , that the Heavenly matter is the Principle of all the motions of the World ; which , as it consists of most subtil and thin parts ; so it easily penetrates the Pores of all Bodies , and according to the different degree of its agitation , doth put them into motion , and push them forward ; and being fluid , doth accommodate it self to the narrow Spaces through which it passeth , and puts on various Figures , according to the diversity of their situation ; so that its particles which pass through the Triangular Spaces , which are left in the midst of three Globuli of the second Element touching one another , must take upon them a Three-corner'd figure , which we may conceive as so many little Pillars , with three hollow'd Channels , winding like a Screw . And this more or less , as they pass nearer to , or further from the Axis of the Vortex , because the Globuli of the second Element move more slowly in the former part of the Vortex , than in the latter ; as it hath been declared more at large in the Fifth Part of this Institution . V. The Striate Particles are variously crook'd and turn'd . We are likewise to Note , that because the Striate particles come towards the Middle of Heaven from contrary Quarters ; that is , some of them from the South , and others from the North Pole , whilst in the mean time the whole Vortex is moved one and the same way ; therefore those Particles which come from the Southern Pole , cannot have their Screw turn'd the same way , as those which come from the Northern Pole , but the quite contrary . VI. How the Striate Particles , that proceed from the Earth , do affect the Load-stones that come in their way . Again , we are to suppose that in the Region of the Earth CADB , there are many Pores parallel to its Axis , through which the Striate , or Screw-like Particles , coming from the parts about one Pole , may pass freely to the other opposite to it ; but forasmuch as they are writh'd a contrary way , and that the one go one way , and the other quite opposite , the Pores which admit the Striate particles that come from the South Pole A , will never be able to receive those that proceed from the North Pole B. Whence it comes to pass , that those Particles that proceeded from one Quarter , can never return by the opposite part , because of the different writhing of the Pores , and because of several most minute fibres arising in them , which obstruct their return . So that after the Striate Particles have run through that Great Load-stone , the Earth CADB , in Right Lines , or equivalent to such , from one Hemisphere to the o the other ; or from the North B to the South A , or else quite contrary from A to B , they are forced to return to the same Hemisphere through which they at first entred the Earth . VII . About every Magnet a Vortex is formed , as about the Earth . So that about every Magnet , as well as about the Earth , C , A , D , B , a perpetual Voxtex of the Striate Matter , which is manifest from this Experiment , that if you cast the filings of Iron or Steel round about a Load-stone laid upon Paper , the said filings will dispose themselves a-round the Load-stone in manner of a Vortex . Wherefore if you shall direct the North Pole of a Load-stone you hold in your hand , to the North Pole of another Load-stone plac'd upon a piece of Cork in a Bason of Water , the North Pole of the later Magnet will turn away from that you have in your hand . But when the Load-stone placed on the Water , being turned about , directs his South Pole to the North Pole of the Magnet in your hand , then it will approach to it , because the interjacent Air being driven away by the Striate Matter , the Loadstone is also pusht forwards by the Air that surrounds it . Whence it is that the Poles of a Loadstone are said to be of a contrary virtue . And if by chance the Striate Particles , in passing from one Hemisphere to another , do there meet with the Load-stone I , K , L , M , N , forasmuch as they find in the same , Pores ranged in the same manner , as the Pores of the inward part of the Earth , they easily and freely pass through them ; especially if the Load-stone be so posited , as to have the arangement of his Pores turn'd towards that quarter , from whence the Sriate Particles proceed . VIII . The Striate Particles do not so easily pass through the Air or Water , as through the Earth . Moreover we are to observe that the Striate Particles cannot pass so freely through the Air or Water , as through Iron ; for they being fluid Bodies , their parts cannot always keep the same situation , and therefore if at any time such pores come to be formed in them , they are presently again spoil'd and confounded by the continual agitation of their Parts . Those Bodies only are disposed to admit the Striate Particles , that consist of Thick and Branchy Parts , such as rationally we may believe Iron and Steel to have . For of all Metals , none is either with more difficulty melted in the Fire , or extended under the Hammer than Iron is , or made harder without the addition of any other Body : which three instances abundantly shew , that the Particles whereof it consists must be Angular and Branchy , which is the reason they are so closely knit together , this being the most necessary condition in order to the free transmission of the Striate Particles . For we find that Iron temper'd and hardned , doth more freely afford them passage , than other Iron ; and so likewise 't is observed , that when the Iron is smooth and burnisht , the Striate Particles , that proceed from one Pole do more orderly return to the other . IX . In every Magnet are two Poles , an Axis , and Parallel Lines . For the better understanding of this Magnetick virtue , we are to take notice , that in every Load-stone there be 2 Poles , South and North. The South Pole is the Point A. being the middle of that part wherein are the Orifices of the Pores , by which that striate matter enters , which comes from the South part of Heaven : and the North Pole is the middle of the other part , by which these Striate Particles go forth , and others coming from the North F , do enter . Besides the Poles , considered in a Load-stone , there is also its Axis , or the Diameter from the North point F , to the South A , drawn through the Center of the Load-stone . And lastly , its Parallel Lines , which being drawn from the North to the South , are at an equal distance from the Axis of the Load stone . X. Why the Magnet points to the Poles of the Earth . These things being premised , it will not be difficult to explain , why a Load stone turns its Poles to the Poles of the Earth ; because the Magnetical Particles coming from the North Pole F , and South B of the Earth , rushing obliquely against the Poles of the Magnet , do push it this way and that way , till that they can freely , that is in right lines , pass through its Pores . XI . How one Load-stone turns to another . And it is for the same reason that one Load-stone turns to another . But it is to be observed , that the South pole of the Magnet always turns to the North pole of the Earth , or of another Load-stone ; because the particles that come forth from the South pole , are writhed another way than those that enter . Whence it is that the Poles of the same denomination do always flee from one another . As for instance , suppose we that the Poles of 2 Magnets be turned to the North Pole of the Earth ; these 2 Poles are of the same Denomination , because the Particles that flow from the North Pole of the Earth , do act upon them after the same manner ; but it is apparent that these Poles flee one another , and therefore would flee from the Pole of the Earth also , in case they were of the same Denomination with it . XII . A Load-stone flees from another , if it be apply'd to the same Pole. For the same Reason it is that a Load-stone being set on one end on its North Pole , and swiming on a piece of Cork in the Water , if to the South Pole of this Load-stone , the same Pole of another Load-stone be applied , the Cork flees away from it ; for seeing that the Particles cannot enter those Pores , they require some space , in the which turning themselves , as in a Vortex , they may return to their North Pole. XIII . Whereas it draws near to it , when apply'd to the opposite Pole. When the North Pole of one Load-stone is turned to the South Pole of another , and that the Spheres of both of them become one , then they approach to each other ; because in this case they act with their joynt forces upon the Air , and therefore make it withdraw ; which , by its Circulating , pusheth on both the Magnets till they come to touch one another . XIV . Why the Poles of a Load-stone , that are of the same denomination , do not unite or come together . But some , it may be , will demand , Why for the same Reason the Poles of the same denomination do not as well come together ; or , why the Magnet doth not approach to their Bodies , seeing that the Air in both cases is alike prest upon ? The Answer to this is obvious , for the Magnetical particles , because of their different way of wreathing , finding no fit passages for themselves in the Pole of the same denomination , do greatly hinder this Conjunction . And the same is the reason , why it doth not draw near to other Bodies , since the Magnetical matter doth not find any corresponding Pores in them . XV. How a Load-stone attracts Iron . From what hath been said , it will not be difficult to explain , how a Load-stone draws Iron or Steel ; or rather how a Load-stone , Iron and Steel draw near to each other : by saying that the Load-stone B. attracts the Iron C. because both their pores are so disposed , that the striate matter A , which comes from about the Poles of the Heaven , and continues its course through the pores of the Earth , that are parallel to the Axis thereof , passing more easily through the pores of the Load-stone B. and of the Iron C. than of other Bodies , drives away the intermediate Air. Now because the Air finds no place ( for there is no Vacuum ) to which it might pass , but that which is left by one of these two Bodies ; it cannot be otherwise , but that the Load-stone B , must be push'd towards the Iron C , or the Iron C towards the Load-stone B. For this is a General Rule , That the Virtue of the Load-stone is increased or diminished , according to the approaching or withdrawing of the Iron . It is increased , when the Load-stone and Iron are so disposed , as that the one sends its Striate particles into the other ; but diminished , when the Iron is withdrawn from the Magnet , or the Magnet from the Iron . For the Communication of the Striate matter being by this means removed , their force must needs be weakned and lessened . XVI . How the Air thrusts forwards a Body . This will not be hard to conceive , if we take notice , that the Parts of the Air , as of all other fluid Bodies , are in continual motion , and that therefore of necessity they must push continually towards the Load-stone B , which they surround on every side : And because they equally push it forwards on all sides , they do not push it more one way than another . But when the Air is driven out of its place by the Striate matter , proceeding from the Magnetical Body at A , it so happens that the Magnet is less push'd forwards on that side , than on the other , and so approacheth to the Iron C , or on the contrary . XVII . The Sphere 〈◊〉 the Magnetical Activity . Wherefore the Sphere of Magnetical Actions is conceived to be about the Circuit DE , within which the Striate particles , composing the Vortex from F to G , can affect Bodies that have their Pores dispos'd alike . And this Sphere is by so much the greater , as the Load-stone is bigger , or at least the longer it is ; because the Magnetick matter , passing through the longer Pores of it , thereby acquires the force of passing farther in a strait Line in the Air ; which makes , that the Virtue of great Load-stones doth reach farther than that of small ones . XVIII . The Magnet doth not properly ●raw Iron . Hence it appears , that the Load-stone B , cannot properly be said to draw the Iron C ; because in this Action there is no Attraction at all , but as soon as the Iron C , is placed within the Sphere of the Activity of the Load-stone B , it gets strength , and is carried towards the Magnet ; which Action doth not so much deserve the Name of Attraction , as that of Circumpulsion , or of being push'd forwards on all sides . XIX . Why an Armed Load-stone b●ars much more Iron , than a bare one . There still remains one Difficulty behind , which is this : If there be so great a Correspondence betwixt the Pores of a Load-stone and Iron , how comes it to pass , that the Load-stone AB , armed with Iron ; that is , to which the Iron Plates CD , and EF , are fastned , should carry much more Iron , than one that is bare . To which I return this Answer , That this greater Force or Virtue , doth not proceed from the Iron that is fastned to it , but from the contact of it ; because the pores of the Iron Plates CD , and EF , do exactly answer to the Pores of another Iron , and their Parts are so joyned , as to appear immediately to touch one another . Whence it is that the Striate matter passing through these Pores , from the Iron fastned to the Load-stone , to another Iron b a , doth with more ease drive away the intermediate Air , and make them more closely cleave together . Now the Pores of the Magnet , cannot so immediately agree with the Pores of the Iron , by reason of its Impurity and Stony Nature . Which makes , that there is always some Interval between the Load-stone and the Iron , by which the Striate matter doth remove from the Pores of the one , to those of the other . XX. The Contrariety of the Poles of the Load-stone , do not hinder their concurrence to bear up the Iron . Neither doth the Contrariety of the particles of the Striate Matter , whereby those that enter at one Pole , cannot enter in by the other , hinder them from agreeing to bear up the Iron ; because those that come from A , the South Pole of the Load-stone , being reflected by the Steel-plate , enter in at one part of the Iron b , in which they make its North Pole , and flowing from thence to the South Pole a , they meet with others of the Steel-plate FE , by which they mount up to B , the North-pole of the Load-stone ; and on the contrary , those that go out from B , through the Plates FE , the Iron that hangs at it HG , and the other Plate DC , return to A. XXI . Why a Load-stone , be it never so strong , cannot draw an Iron that is not contiguous to it from another . Neither can any other Reason be given in my Judgment , why a Load-stone , tho' never so strong , cannot withdraw an Iron that is distant from it , from the contact of another , tho' much weaker Magnet ; because tho' the Striate particles pass through both those Magnets , and the intermediate Iron , so that one only Load-stone is made of them all three ; yet by reason of the Contact , and a greater agreement of the parts , the Iron cannot be withdrawn from a weaker Magnet , to which it is joyn'd , by a stronger . Forasmuch as the Load-stone , not only joyns the Iron to it self , but over and above communicates its virtue to it . XXII . The Load-stone communicates its Virtue to the Iron . It remains still to be explained , how the Load-stone communicates its virtue to the Iron , without any loss of its own strength and virtue . The Iron acquires this New virtue , when it hath pores fit for the receiving of the striate Particles , and so situate , that they can freely pass through them , as hath already been said . For nothing is wanting to it towards the acquiring of this Virtue , save only that some small ends of the Branchy particles , which stick out here and there in those pores , must all of them be turned away in those pores , through which the striate Particles that come from the South are to pass ; whereas in the other pores they must be turned the quite contrary way . Now as soon as the Load-stone toucheth the Iron , the Magnetical particles rush with great force and in crowds into the pores of the Iron , and by this means bow these Extremities of the Branchy particles ; and consequently contribute all that which was requir'd to the Magnetical virtue . XXIII . How Red-hot Iron comes to acquire a Magnetical Virtue . Hence it is , that when a God of Steel or Iron being Red-hot , is set to cool , with its Extremities turn'd directly North and South , it is , by reason of its contexture and pores , which the action of the Fire hath clear'd and opened , immediately penetrated by the Magnetical Effluvia's of the Earth ; which continually do course it through the Air from one Pole to another , and so becomes endued with a Magnetical property : Which doth not so happen in an Ingot of Silver turn'd South and North , and that because of the difference of its Contexture , and disposition of its Pores . XXIV . How it comes to pass that an Iron , according as it is variously apply'd to a Loadstone , doth also differently receive its Virtue . An Iron differently receives the Magnetical virtue , according to its different way of applicacation to the Load-stone . For the part R , of the Iron RST , if it be apply'd to the North-Pole of the Magnet P , will become the South Pole of the Iron ; because the Striate particles coming from the South , will enter in by it , and the Northern will enter in by the part T , being reflected or beat back from the Pole A , through the Air. And the same part R , if it lye upon the Aequator of the Load-stone , and look towards its North-Pole , as in C , it will again become the South Pole of the Iron . But if it be turn'd about , and look towards the South Pole , as in D , then it will lose the Virtue of the South Pole , and become the North Pole. Lastly , If the Middle part of this Iron S , touch the Pole of the Magnet A , the Northern Striate particles which have entred into it by S , will go out again by R and T ; and by this means the Iron will receive at both ends the Virtue of the South Pole , and in the midst that of the North. XXV . Why a long piece of Iron doth not receive this Virtue , but in its length . It may be Queried , why those Striate particles , that from the Pole A of the Magnet , do enter the part of Iron marked S , do not directly pass on to E ; but are reflected this way and that way towards R and T ; so as the Iron receives the Magnetick virtue , rather according to its Longitude , than to its Latitude ? The Answer to which is obvious , viz. because they meet much more free and open passages in the Iron , than in the Air ; for which Reason they rebound from the Air towards the Iron . XXVI . A Plate of Iron hinders the attractive Virtue of the Load-stone . There is also another Difficulty remains to be explained . viz. how the Iron Plate DCD , being apply'd to the Pole of the Magnet AB , which , we said before , did much help the carrying or bearing force of the Load-stone , should notwithstanding hinder its force of attracting and turning Iron to it ; so as to make the Point E of the Magnetick Needle EF , not to be directed to the Pole of the Magnet B , but towards the end of the Iron Plate D. To which we Answer , That the Striate particles , which , if this Plate had been out of the way , would have past from B , toward EF , are diverted by it from C , towards the Extremities thereof DD , because they find a more ready and free passage for themselves through the whole length of the Plate from C to D , than through the small interval of its thickness C. To this may be added also , that the Striate particles do pass more freely through the Plate , than through the Air , so that scarcely any of them reach the Needle EF. XXVII . Iron is more apt to receive the Magnetick Virtue according to its length , than breadth . Wherefore , tho' Iron be made partaker of the Magnetick virtue , yet doth it more readily admit it according to its length , than according to its breadth , even then when the Middle part of it is applied to either of the Poles : The Reason whereof is , because the Striate particles proceeding from the Load-stone , do find fitter Pores for them in the Iron , than in the Air , which is the reason why they go towards it . This likewise is the Cause why Needles endued with the Magnetick virtue , have the Poles of their virtue at their Ends or Extremities . XXVIII . And this in a moment . This Virtue is communicated , as it were , in a moment , the course of the Magnetick particles through the Iron being very swift ; because they meet with , in the Iron and Magnet , Pores exactly fitted to their figure . Now this Virtue is afterwards confirmed by long stay ; for the longer that the ends of the Branchy particles have continued turn'd one way , it is with the more difficulty that they are turn'd the contrary way . This Virtue is longer retain'd in the Load-stone , than in the Iron ; because the parts of the Magnet are more stiff and inflexible , by reason of the Stony matter that is mixed with them . XXIX . Steel better keeps the Magnetical Virtue , than common Iron . Hence it is that Steel receives a greater Magnetick virtue than common Iron , forasmuch as it hath more and more open Pores , and doth more surely keep , and preserve the same ; because its Branchy particles are more stiff and rigid . XXX . The Reason why a Load-stone loseth nothing of its Virtue . The Reason why the Magnet , tho' it communicates its virtue to the Iron , yet loseth nothing of it , is , because nothing of its Substance or Constitution is destroy'd by this Contact , seeing this whole operation is performed by the Striate matter ; which tho' it be hurried forceably and abundantly through the Pores of the Load stone , yet by its passage takes nothing from the Magnet , nay , rather its virtue by this free communication thereof , is much increased . XXXI . By what Efficiency Glass and Amber draw to them bits of Straw and Stubble . And here , seeing that besides the Load-stone there be some other things that draw to them outward Bodies , such as Glass , Amber , Jet , Diamonds , which attract bits of Straw and Stubble ; it will not be amiss to say something of them . And first concerning Glass ; it seems probable that besides those Intervals , which in other Bodies give a free passage to the Matter of the first Element , there be some Long pores like unto slits , and so narrow , that they are only fit to admit the Matter of the first Element , without being capacious enough to receive the Globuli of the second Element . And forasmuch as the Matter of the first Element , accommodates it self , as hath been said , to the Pores through which it passeth , and assumes their figures , as it is wandring through those little Slits or Chinks , it becomes turned into certain Wreaths or Twists ; which because of the various disposition of the parts of Air , being not able to penetrate its Pores , do remain in their own lodging , and there move from one Chink to another by a Circular motion . So that when a piece of Glass is rubb'd hard and swiftly against some other Body till it grow hot , the particles lodged in the Glass are by this agitation first thrust out of their places , and so being driven from the Glass , and flying through the Air , penetrate the Pores of other Bodies : But because they cannot so freely course it between their parts , they soon return to the Glass again , and carry along with them those small Bodies , out of whose Cavities they cannot extricate themselves . And the fame may be said of Diamonds , Amber , Jet , Rosin , Sealing-Wax , and the like , since we suppose the same Intervals or Pores in them , viz. such as only can admit the Matter of the first Element , and that their Particles have the same force to enter the Pores of Bodies , and of carrying them along with them . CHAP. XI . Of Water . I. What Water is . WATER is a congested Mass of Particles of the Third Element , which are very thin . longish , smooth , and therefore very flexible , resembling small plying Cords , disposed to bend and yield every way . II. The Particles of Water are smooth . That the Particles of Water are smooth , may easily appear by Bodies that are wetted therewith ; which with the least degree of Heat , or with the motion of the Air only are dried . For the Particles of Water are by this means separated , and by force of the Motion of Heat , or the Agitation of the Air , driven out from the Bodies to which they were joyned . Hence it is , that Water is not frozen without some difficulty ; for its Particles being smooth , are readily separated from one another , by the Agitation of the Aethereal matter . III. That the Particles of the Water are in continual motion . Now that these Watry particles are in continual motion , besides what we have already cleared in our General Physiology , may be proved by these Instances , viz. that Liquors pour'd together do readily mingle ; that Oil and Water , by strong shaking , become incorporated together ; that Colours and Tastes are , as it were , in an instant diffus'd through all the parts of them , and other such like , which occur to our daily Experience . Book . I. Part. VI. Chap : XI . The Honourable Sr. Richard Haddock Knight Comptroller of their Majesties Navy Royall &c. a. This Plate is humbly Dedicated by Richard Blome . V. How Water becomes turn'd to Ice . Water is never frozen , but when the Heavenly matter which runs betwixt the Watry Particles , becomes more subtil than is customary ; by which means it comes to pass , that the Pores of the Ice being reduced to the measure of these lesser particles of that matter , do shut out those that are never so little bigger . For which Reason it is that Ice is extream cold , and always keeps its Hardness , tho' it be kept till the midst of Summer . Neither doth it grow soft by little and little , as Wax doth , forasmuch as by reason of the narrowness of its pores , the heat cannot enter into the Inner parts of it , but as the Outward parts of it begin to melt . VI. Some parts of the VVater are flexible , and others inflexible . There are two sorts of particles in the Water , Flexible and Inflexible : The Flexible particles are those , which are agitated by the Heavenly matter that surrounds them ; and of these , Fresh-water is composed . These Flexible particles have no Elastick force , and apply'd to the Nerves that are disperst through the Tongue , they produce no Taste ; for wherever they meet with the least resistance they slip away . The Inflexible parts of the Water are stiff and sharp , like so many Swords , and these constitute Salt. As appears from what hath been said before . VII . Why Salt water pricks the Tongue . Hence we may see the Reason , why Salt-water as it were pricks the Tongue ; for since the Saline particles cannot be made to ply or bend , by the subtil Matter which surrounds them , they continue stiff , and as so many sharp-pointed Needles enter the pores of the Tongue , and entring , prick them with their Points : Whereas the parts of Fresh-water lye smooth upon the Tongue , and touch it not with their Points , but with their Sides . VIII . Salt-water is more heavy than Fresh-water , and lighter than Earth . It also appears from what hath been said , why Salt-water is more heavy than Fresh , viz. because it abounds with thicker and more solid Parts , which therefore cannot be resolved into Vapours : For the Saline particles being long and strait , they cannot long continue suspended in the Air , but that one end of them must hang downwards , which is an obstacle to their mounting upwards . But Water , whether Salt or Fresh , is lighter than the Earth ; because quantity for quantity , it hath less Force to withdraw it self from the Center of its motion , than the Earth . IX . Why Water is transparent . Water is made Transparent by the Globuli of the second Element , which continually passing through the pores of it , and being of sufficient force to remove some of its particles , by this means easily form therein passages fitted for the transmission of Light. And as for those Liquors which are dark and troubled , the Reason thereof is , because their parts are too thick to admit the Globuli of the second Element . As is apparent in Blood and Quicksilver . X. Why the Surface of the Water is smooth and even . The Surface of the Water is kept smooth and even , by the motion of the Air , which continually presseth down its Outward parts ; whence it is that small Needles being laid softly upon the Surface of it do not sink , but make a kind of hollow under them ; but when once the surface of the Water is divided , they immediately sink to the bottom . XI . Why the Water is not so fit to receive Sounds , as the Air. Tho' the Water do admit the Light , as well as the Air , as being capable of the Rectilineal pressure of the Matter of the second Element , continually passing through its Pores ; yet is it not so susceptive of Sounds as the Air , because its parts are thicker and more slowly moved . Hence it is that Vessels fill'd with Air being struck upon yield a Sound ; but not those that are full of any Liquor . And for the same Reason , dry Wood is more susceptive of Sound , than Green-wood ; because the pores of Dry-wood have the same respect to those of Green-wood , as an Empty Vessel hath to one that is full ; the pores of the Dry-wood being open and empty , whereas the other are stopt up . XII . Whence the saltness of the Sea proceeds . It is a Question much canvas'd , whence the Saltness of the Sea proceeds ? Which may be thus answer'd , That the same is caused by the Salt which is mingled with its Waters : For Sea-water abounds with Salt , as appears by its distillation ; for the Water distill'd from it is sweet , and the Salt remains in the bottom . What some say , that the Sea borrows its saltness from some Veins of Salt , doth not seem probable ; because if th●se Veins be near the Water , they must needs have been all dissolved long before this ; for Salt immediately dissolves in moisture . And if the waters do not touch them , how shall they communicate their saltness to them ? We conclude therefore , that the Sea is salt , and continues so , because it abounds with many inflexible and stiff Parts ; which tho' they may get up into the Air for some time , yet by reason of their Thickness , soon fall down thither again . Which is the Reason also , why they cannot , together with the flexible particles , pass through the Sand , but are left behind . XIII . The Sea being salt , how come● it to pass , that Fresh water is found in it ? But tho' the Sea be salt , yet Fresh-water hath been sometimes found in the midst of it , and that by reason of the many subterraneous Channels of Fresh-water , which are found at the bottom of it . Thus we see , that the Sea about the shoars , which are near to the Mouths of great Rivers , is less salt ; because the Fresh-water of the Rivers over-powering the Salt-water , continue to be fresh for some distance in the Sea. As may be seen at the Mouth of the River Rhôsne in France , where the Salt-water doth not mingle with its Fresh-water , till at some distance . XIV . Water is not Naturally cold . We are not to think with some Modern Philosophers , that Water is cold in its own Nature : For tho' it feels cold , when frozen , this only happens to it from the Rest of its parts , wherein the Nature of Cold consists . But when it is in its Liquid form , it is indifferent to Heat or Cold , as being naturally susceptive of a greater or less degree of Agitation , according to which it appears hot or cold . So that when heated Water , by de-degrees is reduc'd to its former coldness ; this proceeds not from its Natural propension to Coldness , but because it communicates some part of its Agitation ( wherein its heat doth consist ) to some Neighbouring Bodies . And therefore when Hot-water is so close shut up in any Vessel ; as to have no Communication with any ambient Bodies , it preserves its heat for a long while . Running-water therefore seems to be of such a Temperature , as to be a kind of Mean betwixt the Excess of Heat and Cold ; seeing that by great heat it would all vanish into Vapours , and by excess of cold be lock'd up into Ice . XV. Hot Fountains do not receive their Heat from subterraneous Fires . Supposing , according to what hath been deliver'd before , that the Earth contains great store of Brimstone , Jews-Lime , and other inflammable Bodies , it will not seem strange to us , that Hot-waters or Bathes break forth in several places of the Earth . Nor is it necessary that these Bodies should be actually set on fire , in order to heat the water flowing by them : For it doth not seem probable , that any such matter should be able to flame in the Earth ; because the Smoak of it would soon choak it for want of vent , or the surface of the Earth must burst to give it Air. Wherefore it seems more likely , that as of Saltpeter , Brimstone , Jews-Lime , and Quick-Lime Mixtures are made , which by sprinkling water upon them , do grow hot ( which happens also to Aqua Fortis and Oil of Tartar , and to Butter of Antimony , and Spirit of Nitre , when put together ; ) so the like Mixtures may be under the Earth , and the same Heat may happen when any Moisture comes to them . XVI . But from a Mixture of Heterogeneous Bodies . For it is not always necessary that Hot Fountains should proceed from subterraneous Fires , seeing that a mixture of Heterogeneous Bodies is sufficient for this purpose , as being able by Fermentation to produce the same effect . Heat therefore is communicated to Hot Bathes , whilst their water passeth through Channels heated by the fumes from Jews-Lime , Brimstone , or the like . For the water , by passing through these Hot places , becomes heated thereby , after the same manner as when water is heated in a Stove . XVII . The Qualities of Water . Accordingly , if the water of Fountains , before it breaks forth on the surface of the Earth , happen to pass through Juices and Minerals , it acquires from them their Taste and Smell , and several other qualities . For the strong Scents of some waters are from Brimstone and Jews-Lime , their Bitterness , from Nitre ; their Acidity from Copperas ; their Harshness and Adstringency , from Alom ; their Saltness , from Common Salt ; their sharp Taste , from Marchasite or Fire-stone ; their Iron taste , from Iron . XVIII . Waters receive their Medicinal virtue from the Mineral Juices , through which they flow . And forasmuch as those Juices through which these waters flow , abound with a Medicinal virtue , 't is from them they derive it , and by means thereof are profitable for the Cure of many Diseases . The Purgative virtue that some have being chiefly owing to Brimstone , Salt , or Nitre ; the Adstringing faculty of others to Alom , which is made use of by Physicians against Ulcers , Bloody-fluxes , and Relaxations of the Nerves . Those Waters that have a power of mollifying the Earth , receive it mostly from Brimstone and Jews-Lime . Which is the Cause why Bituminous Bathes are accounted profitable to those who are troubled with the Gout or Ach in their Hips . In like manner Waters are made hurtful , by being imbued from some Metallick Bodies ; such are those which have received a taint from Lead , or Quicksilver , or are infected with a petrifying Juice , or of some middle Mineral , as that of Antimony ; and therefore causing Vomitings , and Scourings . And , in a word , whatsoever Waters exert any special Operation on the Body of Man , have it derived from Subterraneous matters . CHAP. XII . Of the Ebbing and Flowing of the Sea. I. The Ebbing and Flowing of the Sea is proportion'd in time , accor ding to the Motion of the Moon . BY the Sea-Tide we understand the Ebbing and Flowing of the Sea , which twice happens in the time of 24 hours , and about 50 minutes . The Sea-Tide is Regular , tho' it do not happen at the same time , nor after the same manner in all places . For the Sea swells as oft as the Moon passeth our Meridian , whether above or under our Horizon ; and it falls again , when the Moon is on the Horizon , whether it riseth or sets : For we find , that the Sea in its motion keeps a proportion of Time with the Moon ; for as the Moon riseth every day 3 Quarters of an Hour and 5 Minutes later● , so at the same Interval doth the Sea rise . II. What the Sea-Tide is . For the Flowing of the Sea is nothing else , but the motion of the Sea-water towards the Shoars , in about Six Hours time : And the Ebbing ; is the motion of the said Waters from the Shoars , Sea-ward , in other Six Hours time . III. The Tide is not the same in all Seas . The Tide is not the same in all Seas ; but in some the same is greater , and in others less , yea , in some the Tide is verry inconsiderable , or none at all . In some places the Flowing of the Sea , is equal to its Ebbing , in others greater and in others less . The greatest variety of Tides is at the Aequinoxes and Solstices , as also at the different Aspects of the Moon : Thus at the Full and New Moon the Tide runs highest , as it is least at the Quarters . This is observ'd in almost all the Shoars of Europe , which the Ocean beats upon . But the Flood is always so much the greater , and comes the slower , by how much the Shoars against which they beat , lye more towards the North ; and on the contrary is scarcely sensible between the Tropicks . IV. The Opinion of the Ancients , and some of the Peripateticks , concerning the Cause of the Sea-Tide . The Ancients , to give a Reason of all these Appearances , feigned the World to be a great Animal , which by breathing through its Nostrils , placed by them at the bottom of the Sea , did cause the Sea to rise and fall . But this Monster is long since vanish'd into a Chymoera . Some of the later Philosophers , Peripateticks , and others say , that this Reciprocation of the Sea proceeds from an Occult quality . But what is this else , but a Profession of their Ignorance , and that in plain terms they do not know the Thing they pretend to Explicate ? At this rate , it is an easie matter to explain all the Mysteries of Nature . For that which is hid is not known ; and indeed we know no Effects , but such as we can demonstrate by their proper Causes . V. The Opinion of Galilaeus , and of some others . Some attribute this Effect to the Agitation of the Saline particles of the Sea-water , by the moderate heat of the Moon . GALILAEUS , to the multifarious and unequal motion of the Earth . But these their Opinions are overthrown by this Observation , that neither of them gives the least probable Reason of these motions in the upper Hemisphere , when the Moon is in the lower ; and on the contrary . The latter Opinion is indeed the better of the two , but somewhat obscure , and not altogether consonant to Reason ; because it attributes less to the Moon than her due , who certainly hath a great stroak in this matter . VI. Some things supposed for the better understanding of the Sea-Ti●e . For the understanding of the true Cause of the Sea-Tide , some things are to be presupposed . First , That the Course of the Moon , and of the rest of the Planets is Elliptical , not perfectly Round . And this is granted by all who suppose the Heavens to be fluid . Secondly , That whilst the Earth is whirl'd about from West to East , in the Center of her Vortex ABCD , the Moon is carried in the outward Surface or Circumference of the said Vortex , and in a Months Space absolves her Course . Thirdly , That when the Moon is plac'd at B , the Heavenly matter will be more strong between B , and 6 , than between 8 and D ; because it there flows through a narrower Space , by reason of the Moons presence ; and therefore the place of the Earth , which is determin'd by the force of the Circumfluent matter , will also be changed , that is , the Earth will withdraw towards D , till the force be equal on both Sides . VII . The true Cause of the Sea-Tide . These things presuppos'd , let us consider the Figure where the Elliptick ABCD represents the Vortex of the Earth , in the midst whereof the Earth EFGH is placed . The Circle B ☽ , the Globe of the Moon ; 1 2 3 4 , the surface of the Sea ; and 5 6 7 8 , the Air , which surrounds the Sea. This suppos'd , we may easily understand that the Rising and Falling of the Sea must proceed from the presence of the Moon . For seeing that all places are fill'd with Bodies , and that the same portion of Matter is preserv'd every where ; it follows that New Bodies cannot be admitted into them , except thereby other Bodies be compressed , so that they that come in must thrust the others out of their places , and force them to betake themselves elsewhere . Which happens here by reason of the Lunar Globe B ☽ ; for the Moon being a great Body , and requiring a large Space to dilate it self in , she cannot ascend upon our Horizon , without lessening the Interval that is betwixt her and the surface of the Earth , and by this means forcing the Coelestial matter to flow more swiftly ; and consequently pressing as well the surface of the Air 5 6 7 8 , as that of the Water 1 2 3 4 the more , which being fluid Bodies , do readily yield to the said pressure . VIII . An Objection answer'd . It is of no weight , to say that the Air and Heavenly matter move more slowly in the great Diameter , even then when the Moon takes up a part of it , than they move in the little Diameter , when the Moon is without the same : For it is enough , if the passage only of the Air and Coelestial matter be more straitned in the great Diameter , when the Moon is in it , than it is when she is not , to cause the Waters that are in this Diameter to be driven towards the Poles , and so by this means to cause an Ebbing and Flowing . IX . The presence of the Moon presseth the Water and the Air in tw● 〈◊〉 parts Forasmuch therefore as it is manifest , that the Earth EFGH is kept in , and determin'd to the same place , by the equal pressure of the subtil Matter that surrounds it ; it cannot be conceived , how that part of the surface of the Earth , which is opposite to the Moon , existing in the Point B , should be more pressed , without conceiving at the same time , that the Matter of the Heaven must push the Earth out of its place , thrusting it forwards to the opposite part D , until the Earth , about the Point 8 , be pressed after the same manner , as about 6. Wherefore there are two streights , B and 6 , and D and 8 , made in this Vortex or Heaven , which are diametrically opposite to each other , viz. the one betwixt the Moon ☽ , and the Earth T ; and the other between the Earth T , and D. X. How the Howing of the Sea is caused . Whilst therefore the Coelestial matter , which moves round about the Earth , moves more swiftly in these Streights , one whereof is betwixt the Earth T , and the Moon B ; and the other betwixt the same Earth T , and the opposite part D. It presses the Sea 2 and 4 , and drives it from thence towards those places that are free from this Pression , that is , towards G and E ; where swelling by the force of its own Heaviness , it is driven towards the Shoars . XI . The Sea-Tide must happen twice in a day . And because the Circumvolution of the Earth about its own Center , is performed in 24 Hours , if we divide its surface into Four parts EFGH , that part of it which is at F , where the Sea is lowest , because of the presence of the Moons Body , 6 Hours hence will be in G , over against the Point C. where it is highest ; and after 6 Hours more at H , and so on . Whence it follows , that the Sea-water must of necessity flow and ebb every 12 Hours , in one and the same place . And because the Moon every Day runs 12 Degrees towards the East , the Tide must be retarded , that is , come later by almost an Hour : For tho' the Earth be carried about in 4 Hours , and must at a certain time bring back the same part of the Ocean ; yet because it must also run over those 12 Degrees , which the Moon hath run through before it can bring back that part of the Ocean , and oppose the same to the Body of the Moon , so it is that the Tide happens every day about 50 minutes later ; and consequently between the two Tides that happen every day , there is the difference of 25 minutes . XII . Why the Waters return to the Parallel , above which the Moon moves . It is easie to apprehend , that if the Earth and Moon were immovable , the Waters that have been prest towards the Poles , would not return from thence ; forasmuch as they would be held there by the same Cause that hath push'd them thither : But seeing that the Earth and the Moon are in a perpetual motion , it will follow of necessity , that the Waters which have been thrust from the Parallel which is under the Moon towards the Poles , must return afterwards by their own weight , from the Poles towards the Parallel , above which the Moon is , at that time when the parts , from whence they have been driven , are no longer opposite to the Moon . XIII . Why the Tide is longer in 〈…〉 the 〈…〉 th● 〈…〉 an● 〈◊〉 fore is greater there . It is apparent also , why the Tide must come later to the Northern Shoars , than to those that are further from the North ; for seeing that the moved Waters are driven from the South part to the North , they must of necessity reach the nearer Shoars before those that are further off : And because the Waters that beat the Shoars near to the Torrid Zone , may pass further and flow toward the Poles , except they be hindred by the Northern Coasts , it comes to pass by this means , that the Tide is greater and more sensible in that part which is at a greater distance from the Aequinoctial Line ; because the Waters about the Aequator , by reason of the largeness of the Circle , are diffused towards the Poles , that they may be gather'd together in a narrower Region . XIV . An Objection answer d. But if any one Object here , That the Waters , in the space of 6 Hours , which is the time of the Duration of the flood , cannot flow from the Tropick to the Poles ; and thence conclude , that the swelling of the Sea towards the Northern parts , cannot be an effect of the pressing of the Moon betwixt the Tropicks . I answer , That in order to make the Sea swell towards the North , it is not necessary that the Waters , betwixt the Tropicks , should go to the Poles ; but that it is sufficient , if they only drive away those that are nearest ; and that these again drive others before them , and so on to the last ; which may be done in less than 6 Hours time , because the Sea is a continuous Body . XV. Why the greatest Tides are about the Aequinoxes . Now the Body of the Moon continuing of the same Thickness , takes up more of the narrow Space , when she is in the less Diameter , than she does of the larger Space , when she is in the greater Diameter ; and therefore it matters not whether she be in her farthest distance from the Earth , or in her nearest ; because at either time she makes the Space of the Vortex wherein she is streighter or more narrow ; and it is only her presence over against the Earth that is the Cause of the Tide , and not her nearness to it . And this furnisheth us with the true Reason , why the highest Tides are at the Aequinoxes ; because at the Beginnings of Aries and Libra , the Moon more directly acts upon the Earth , and presseth it accordingly , forasmuch as its Plain at both those times doth not decline from the Plain of the Aequator of the Earth , above 5 Degrees . For then the middlemost part of the Earth , or the Aequator , is in the Ecliptick , near to which the Moon always continues ; and consequently the Space being there narrower , the pressure must be so much the greater . But at the time of the Solstices , she declines 23 Degrees and 30 Minutes from the Plain of the Earths Aequator . Seeing therefore that from the former direct Opposition , doth follow a great Pressure of the Air and Water , it is no wonder if about that time the greatest Tides do happen . XVI . Why the Tides are greater at New and Full Moon , than at the Quarters . So likewise it is manifest , why the Tides at New and Full Moon are greater , than at the Quarters . For the Vortex ABCD , wherein the Moon is , is not exactly round , but somewhat Elliptical , and leaves a greater Space betwixt the Earth and its Circumference , about A , and C , than about B , and D. And therefore seeing the Diameter , wherein the Moon is when she is New or Full , is narrower than that which intersects it at right Angles , it must follow , that when the Moon is in those narrower streights of Heaven , she must with more force press the interfluent Matter , and consequently produce greater Tides . But in the Quarter of the Moon about A and C , the Tides are less ; because the Moon is then in those more ample Spaces , and consequently there must be a less pressure of the Waters . XVII . An Objection answer'd . It signifies nothing therefore to say , that the Moon is not always nearer to the Earth , when she is in Conjunction or Opposition , than when she is in her Quarters ; and that consequently the Tides ought not to be greater at the Conjunctions or Oppositions , than at the Quarters : Because , as I have before observed , the highest Tides do not precisely depend upon the Moons being nearer to the Earth ; but because at the Conjunctions and Oppositions the Moon is always in the least Diameter of the Ellipsis ; where , whensoever she is , be she nearer to , or further from the Earth , she always more streightens the passage of the Air and Heavenly matter , than she doth when she is in the greatest Diameter of the Ellipsis . XVIII . Why the greatest Tides are three days after the New and Full Moon . The greatest Floods commonly happen 3 days after the New and Full Moons , because of the Disposition the Sea-water is in at that time , to be moved more than ordinary : For having been strongly moved the two foregoing days , it is no wonder to find the Tides still to increase for 2 days after that the Sea hath received its greatest Impulsion from the Moon . XIX . The Cause of the various Tides in the Sea , proceeds from the different situation of the several places , It remains still to be explained , how it comes to pass , that seeing the Moon is the common Cause of all Tides , there is a great variety of them to be observed in the Ocean . To clear this Difficulty , I say , that this variety of Tides is often to be attributed to the Sea-shoars , which according as they are nearer or more remote , so the Waters reach them sooner or later . Wherefore , if the Sea about the Aquitain shoar flows 7 Hours , and ebbs but 5 ; and on the contrary , if near Canada , it flows 5 Hours , and ebbs 7 ; if on the shoars of Guinea in Africa , it flows 4 Hours , and ebbs 8. If at Venice the Tide rises many Foot high , and at Ancona nothing at all , or very little , this depends on the diversity of the situation of those Coasts . Of this we have an Instance in the Banks of Rivers , between which , according to the difference of their situation , the Water runs either headlong , or glides away smoothly ; runs winding and turning , or takes a strait course . The Aquitain Sea therefore is longer a flowing , than it is ebbing ; whereas on the Belgick shoar , the Flood and Ebb is equal , because of the different degrees of their Steepness and Declining . So likewise at Venice , and on the Coast of Syria , the Tide riseth much higher than with us ; because the former places are situate , as it were , at the end of the Channel ; whereas the latter are in the midst of it : For it is manifest , that the rising or falling of the Water shaken in a Vessel , is only perceived at the Extream parts of the Vessel ; whereas in the Middle there is nothing to be perceived , but an equal and simple flowing of the Water . XX. And fr●● the various pression of the the Moon . But to determine something more particularly about this Diversity of Tides , we are to take notice , that the motion of the Waters chiefly depends on this , That in that vast Tract of the Sea , there be some peculiar places where the Waters are very much pressed , because of the Moons presence ; and others again , where no force at all seems to be put upon them : Which makes that the Waters are driven to those places where there is no pressure , and so arise there against the Shoars , and make a Flood . Wherefore , if there be any Waters in the Sea , which because of the inconsiderableness of their Extension , are all over cover'd by the Body of the Moon , they must needs be so equally prest in all their parts , as that no Rising or Falling can be perceived in them . Thus those Lakes , Pools , and Rivers that are between the Tropicks , have no Tides , seeing that because of the smalness of their surfac● , compar'd with the Bulk of the Moon , they cannot be sensibly prest one way more than another . Book . 1. Part. 6. Chap. 13 G. Freman . In. I. Kip. Scul To Captaine Thomas Newman● of Iver in the County of Buckingham Gent. This Plate is humbly Dedicated by Ric : Blome XXI . Why some Seas suffer no Tides . Wherefore it is no wonder , if in the Baltick Sea , the Dead Sea , and the Euxine Sea , no Tides at all are perceived ; because those Seas have no entercourse with the Ocean ; or if any of them have any communication with it , it is by such narrow passages , that the agitation of the Sea can have no great force upon them . XXII . The meeting of Waters , a Cause of the difference of of Tides . To this Diversity of Tides , the various Meetings of Waters , and difference of Winds , which differently agitate them , and drive them one against another , do much contribute . For the Sea flows continually from East to West , which those who fail from Spain to the West Indies have Experience of ; for they frequently perform this Voyage in 30 Day , ; whereas in their Return , they spend no less than 3 Months , because the Course of the Sea is against them , and runs Westward . And the same is observ'd by those who sail from Lisbon to Brazile . XXIII . Why the Gulf of Venice flows towards the West . If you Object , That the quite contrary to this is found in the Gulf of Venice ; for the Sailers tell us , that when they are over against Epirus and Dalmatia , they perceive that the Waters are carried with a strong Stream Westward , towards Venice ; and that when they are near the Coast of Italy , they are carried Eastward , towards the Morea . I Answer , That these motions of the Waters are caused by Rivers , which from subterraneous Cavities flow into the Sea ; which in their coming forth , do with great Violence push forwards the water of the Sea that meets them , and divert it from its Course . Or else those Rivers , being beaten back by the VVater of the Sea , are forc'd to turn their motion , and to run another way . XXIV . An Objection against the foresaid Explication , of the Ebbing and Flowing of the Sea. But against this Explication of the Ebbing and Flowing of the Sea , it is Objected , First , That if the Moon did drive the Waters from between the Tropicks towards the Poles , it would follow , that when the Moon is in the Meridian , it would be Low-water in that part which was opposite to it , and High-water towards the Poles ; whereas Experience shews the contrary , viz. that the Tide comes in when the Moon approacheth to the Meridian , and that the water falls , as she withdraws from it . XXV . Answer'd . I Answer , That when the Moon is in the Meridian , the Sea must be low precisely in that place which is over against it ; but it doth not follow therefore , that it must be High-water under the Poles , but only that it must be High-water between the Tropicks and the Poles , and so it is . For we find by Experience , that the Sea increaseth from about the Tropicks , to the most Northern part of England ; and that from thence , towards the Poles , it increaseth no more . Whence it is , that in the Northern Ocean , from about the Latitude of about 65 Degrees , to the Poles , there is no Flood nor Ebb at all . XXVI . A second Objection against this Explication of the Tide . In the Second place it is Objected , That the Coelestial matter which follows the Moon , and which moves somewhat swifter than she doth , from West to East , doth not only run under the Moon , but also above it , and on the sides of it ; so that that part of the Sea , over against which the Moon is , will be no more pressed than the rest . XXVII . Answer'd . For Answer : It is certain that the Heavealy matter which follows the Moon , and is in a tendency to go somewhat swifter than she doth , from West to East , doth not all of it flow under the Moon , but that a part of it passeth above it , and on the sides of it ; yet doth not this hinder , but that the Way of the said matter under the Moon is more streightned , which is sufficient to make the Sea to be more pressed in that part , than in all the rest . XXVIII . There is a threefold Tide . From what hath been said , we may gather , that there is a Threefold Tide , according to the difference of Times , viz. a Daily , Monthly , and Yearly Tide . The Daily Tide is that , whereby the Sea in 24 Hours time doth twice approach to the same Shoar , and as many times retires again in this order , That the Tide of the Day following falls about 50 minutes later , than that of the Day foregoing . The Monthly Tide consists in this , that the Daily Tide increaseth twice in a Month , viz. about the New and Full Moon , and twice decreaseth , viz. in the Quadrate Aspects of the Moon . The Yearly Tide consists in this , that the Monthly Tide twice in a Year riseth higher than ordinary , viz. at both the Aequinoxes , and as often decreaseth , viz. at the Solstices . Wherefore if these 3 Periods be compared with the Daily and Yearly motion of the Earth , it will seem impossible , they are the words of GALILAEUS , in the 4th Dialog . System . Mundani , That Naturally there should be any Tide , supposing the Earth to stand immovable , without betaking ones self to the absolute Power of GOD , and conclude , that the Sea-Tide is a supernatural Effect . CHAP. XIII . Of the Air. I. Of the Atmosphere . THe AIR , according to the Order of Nature , follows the Earth and Water , to the Surfaces whereof it adheres and is joyned . The Astronomers call that part of Heaven , Air , into which the Vapours and Exhalations ascend . And because all those Exhalations , which are continually breath'd forth from the Earth and Sea , are by the pressing of the Subtil matter , dispos'd into a Round surface ( at least as far as the agitation of those Bodies will permit ) they gave the Name of Atmosphere to those Vapours . It is various , according to the diversity of Heat and Cold , and of the Vapours themselves ; and from thence proceeds a various Refraction and Reflexion of the Rays of the Sun and Moon , and the other Stars in the Air. II. There is a twofold Substance in the Air. Accordingly we are to distinguish a twofold Substance in the Air , viz. one Native and Primitive , which hath been from the Beginning of the World , and which is the most pure and thin part of it : And the other Adventitious or Foreign , which consists of the Effluvia's or Steams of other Bodies , according to the difference of Place and Time. Hence the Air is accounted , First , absolutely Pure , when these Steams are not so thick , that they can easily cling together , and thereby lose the form of Air. Secondly , With respect to us , whilst those steams are not so hurtful to our Bodies ; such as they are at the time of Epidemical and Contagious Diseases . III. What the Air is . The Air is a loose Body , fluid and transparent , whose Particles are so small , and so little clinging together , that they may with the least force be separated from the Globuli of the second Element and by a peculiar motion be carried independently about their own Center . The Fluidity of the Air proceeds , from its being compos'd of very subtil and thin Particles ; for tho' their irregular Figures seem to dispose them to cling together , yet are they forced to continue separate , because the minuteness of their Branches makes them yield to the motion of the Subtil matter , which by its great Mobility keeps them disunited , and makes them continue in a Liquid form . And forasmuch as its Particles are thin and disjoyned , every one of them moves independently from any of its Neighbours , and takes up that whole little Sphere , which is needful to its being whirl'd about its own Axis , keeping all other particles out of it . IV. The Property of the Air is to Polish and Smooth . The Air 's Property is to polish and smooth moist Bodies , and to keep them from being easily penetrated ; as appears in the Water , which easily bears a Steel Needle , or a Pane of Glass , as long as its surface is not broken . Now the Cause of this is , because the Parts of the Air are moved otherways than the Parts of the Water ; so that by their rubbing against one another , both their surfaces are hardned , and made more unfit to be divided . V. What Vapours and Exhalations are . But because the more subtil parts of Exhalations do compose the Air , it will not a little conduce to our better understanding of the Nature of the Air , if we explain what Exhalations are , and how they are distinguish'd from Vapours . Vapours therefore are nothing else , but Particles of VVater , which the Heat of the Sun , and the Circular motion of the Earth , have separated from one another , and raised into the Air. And , Exhalations are certain Particles , which by the same Causes have been separated and raised from Earthly Bodies . VI. How they are said to be raised by the Sun. When it is said ▪ that Vapours and Exhalations are raised into the Air by the Sun , it is not so to be understood , as if the Sun did attract them by his Beams ( for such an Attraction is unintelligible ) but only that at the presence of the Sun , or some other Cause , the Subtil matter which pierceth the Pores of Bodies , doth separate some Particles from them ; which finding no other place but the Air , wherein they can move , do tend that way , in a manner not much unlike to that , whereby the Dust , which in Summer time we tread upon with our Feet , mounts upwards , and is raised up into many Clouds , according to the number of those that Tread it . VII . Another Property of the Air , is to be Rarefied and Condensed . The Air , and all Vapours , are easily condensed and rarefied , according as they are more or less agitated . They become Rarefied , when they are more swiftly than ordinary tossed by the Heat : For seeing their Particles are flexible , the least commotion doth dilate them , and then they require a greater Space to continue their motion in . Again , they become Condensed , when they cease to be agitated by Heat ; for then their Particles cling together , and are comprest by Cold : For nothing else can be understood by Heat , but the Agitation of the minute Particles of Bodies ; as by Cold , th● Diminution or Cessation of that motion . VIII . The Air being comprest , hath the power of springing back . The Air that is forceably comprest in any Vessel , hath a power of springing back ( which is called its Elastick virtue , ) and of extending it self into a larger space . By which means Instruments are made , which , with the help of the Air only , drive the Water upwards , as we see in Artificial Fountains ; and others , that shoot Darts , like Bows . The Cause whereof is , for that when the Air is thus compressed , each of its spherical Particles hath not sufficient place left it , wherein to perform its Circular motion , by reason of the crowding in of other Bodies : And forasmuch as at the same time , the agitation of these Particles is continued , by the motion of the Heavenly matter perpetually flowing about those parts , it can be no otherwise , but they must hit against one another , and push each other out of their places ; and thus at last , all of them together , make a strong push for it , to acquire a larger space . IX . Air condens'd is more heavy than that which is rarefied . Condensed Air is more heavy , than that which is Rarefied ; because it contains less Heavenly matter . We may Experience this , by filling a Bladder first with a little , and rarefied Air ; and afterwards with much , and condensed Air. The Distance of the Air from the Eart● , is uncertain . From the Greater or Lesser Agitation , or Rarefaction and Condensation of the Air , we conclude , that the Compass of the Air is greater in Summer than in Winter ; and therefore that what is commonly said , that the furthest distance of the Air from the Earth is of 52 Italian miles , is vain and uncertain . And the same is to be said concerning the three Regions of the Air , and their several Bounds ; as when they ascribe to the Lowest Region , the height of half an Italian mile ; to the Middlemost , of three and an half ; and to the Highest , the heigth of 48 miles . For seeing there are no certain Bounds whereby these Regions are discriminated , it is a Fond undertaking , to go about to determine their Limits . XI . The Air is Heavy . Another Property of the Air is Heaviness . For as we find that the VVater presseth the bottom it lies upon ; so likewise the Air , which encompasseth the Earth , doth press it on every side ; and so much the more vehemently presseth it , by how much it is nearer to the Earth : As appears in a Bag-Pipe or Bladder fill'd with Air , which thereby becomes heavier than it was before . The same also may be proved , by the running of Quicksilver out of a Pipe that is stopt at the Top ; for the Quicksilver changeth its height , according as it is carried along a low , or high place ; so as to be depress'd deeper in a high place , and mount up higher in a low place . XII . Why the weight of the Air is not selt . If you demand , How comes it then to pass , that we are not sensible of the weight of the Air ? I answer , That the Reason is , because there is as great a Force in our Body to resist , as there is in the Heavy Air to press . For our Body being full of Blood and Spirits , doth with no less Force resist the pressure of the surrounding Air ; which is the Reason , why the Air with its weight cannot move our Nerves , nor impress a sense of Heaviness upon us . XIII . Whence the Heaviness of the Air proceeds . Now the Heaviness of the Air , is to be ascrib'd to the watry Particles that are mingled with it ; because that part of it which is diffus'd about the Earth , and reacheth to some certain distance , doth approach to the Nature of a watry Vapour , especially when many steams are mix'd with it . Yea , if we may believe some Men , Thick Air is not only fill'd with Steams from the Earth and Water ; but receives also the Breathings of all other Bodies , and abounds with their Spirits . XIV . Why the Lower Region of the Air is hotter than the higher . The Region of the Air , which is nearest to the Earth , is hotter than that which is at a good distance from it ; because the Solar Rays being more copiously reflected from the compact Body of the Earth , do produce a greater agitation of its Particles . And therefore it is that the higher Region of the Air is cold , where Clouds , Snow and Rain are generated ; because the Rays that are reflected from the Earth , do not so copiously mount up to it . XV. The Air is not Moist , as the Peripateticks suppose . The Peripateticks hold the Air to be Moist , but without any sufficient ground , that ever I could understand ; save only , because they thought it convenient to attribute two of their invented Qualities to the Air , which they call an Element . For tho' the Air be sometime called Moist , this doth not suppose it to have an Essential Humidity ; but is so denominated , because of those Watry particles resolv'd into Vapours , that are joyn'd with it ; which , when they are removed , it is called Dry : In which condition it cannot be turn'd into Water , no not by the most extream Cold. CHAP. XIV . Of the Elastick or Spring like Force of the Air. I. What a Spring is . BY the word SPRING is commonly understood , that whereby a thing that is forceably bent and reduc'd to a less Extension , doth explicate it self again , and strive to return to its former Expansion . II. Wherein the Elastick or Spring-like force of Bodies doth consist . This Elastick , or Spring-like Force in Bodies , proceeds from the Subtil or Aethereal matter ; for when any hard Body , by Example , the Blade of a Sword is bent , its parts are by this means deflected from the Convex or Jetting-side of the Blade , and approach nearer on the Concave or Hollow-side of it ; by which means the Pores on this side , must needs be made more narrow . Now because the Subtil Matter cannot exert its Force , to return through those parts of the bended Body , it passeth through ; but strives at the same time , to reduce the parts thereof to that state wherein they were before , it must necessarily follow , that this Body must fly back . III. The Air is easily Condensed and Rarefied . This Affection is most peculiar to the Air ; which being nothing else , but a company of thin Particles of the third Element , which comply with the motions of the Heavenly matter , becomes easily condens'd ; not only when by the decrease of Heat , and the less agitation of its parts , they do not with so great Force push against one another , as before they did ; but also because they are shut up within the parts of another Body , which compress them more than ordinary . And on the contrary , the Air is as easily Rarefied , as soon as those Causes are removed , which reduc'd it to a less Space . Whether this happens by means of Heat let into its Pores , if before it was condensed by Cold ; or by opening the Prison wherein it was shut up before , if by Compression only it was reduced to a less Bulk . IV. The Air can be Rarefied and Condensed divers ways . For the Air can be dilated three several ways , either by its Elastick virtue , whereby it resists its being Comprest ; or by the Force wherewith the Subtil matter strives to enter again into the Pores , whence it hath been driven away ; or , lastly , by the extream Agitation of the said Matter , which moving the parts of the Air more strongly than ordinary , causeth it to extend it self farther . And on the contrary , the Air becomes condensed , either because it is pressed ; or , because the Subtil matter , which before moved its Particles , is slipt away from them ; or , because the said matter having lost part of its Agitation , hath no more the Force to move them as much as it did before , which makes them to lye more close together . V. The Action whereby the Air flies back like a Spring , is very sudden . But we are to take notice , that this Dilatation , whereby the Air removes all Obstacles that compress it , is and must be very sudden ; because its parts , which before could not move without clinging together , do then with joynt Forces leap back , and by the force of the Heavenly Globuli , continually flowing about them , make an assault together , in order to take up a larger Space . There are various Experiments that are founded on this Affection of the Air , which we admire in Artificial Fountains , and Wind Guns , which shoot Leaden-bullets , and other things . VI. An Example of an Artificial Fountain . For let the Air be comprest in the Pneumatick Vessel , the lower part of it being fill'd with Water , and the Water will spout out thence with so great force , that it will surpass almost any supposed height . For Example , Let the Pneumatick Vessel be ABC , the lower part whereof BC contains Water , and the superiour BAC Air ; which being crowded into it by the Pipe AD , at several times ; let it be comprest , as is wont , in the upper Cavity BAC ; then let the Tube ▪ or Pipe AD be well stopt , by turning the Key of the side Pipe , appearing above B. This supposed , if the Key of the greater Pipe DA be open'd , the Water will spout forth through the said Pipe with great force to E , being forc'd upwards by the compr●st and condensed Air. And forasmuch as the Air is still capable of greater degrees of Compression , it is certain that the Air may also be push'd upwards with still greater and greater force . The Reason of this Experiment is this , that the Particles of Air contained in the Pneumatick Vessel , being thin , and separate from each other , do yield to the motions of the Globuli of the second Element : But when these Globuli are by some force thrust out , the Particles of the Air are forc'd to come nearer together , and entangle one another , so as that they can no longer whirl round , as they were us'd to do . Now being toss'd about by the Subtil matter , they with their Corners hit one against another , and thrust each other out of their place : By which means they so bend their Force , to get more room for themselves , as that by that Effort they spout out the Waters with great force towards E. VII . Musical Wind Instruments may be play'd upon by the Compression of the Air. And for the same Reason a strong Wind can be excited , by means of the Compression of the Air , which will be able to express all Variety of Sounds . For so we Experience , that even great Organs , by the Pneumatick Art , can play variety of Tunes , without any assistance of a Musicians Hand , to wit , by our blowing into some Pipes , and thereby turning a Wheel , whose Teeth shall tuneably strike the Keys of the Organ . VIII . How the Wind-Gun can discharge Leaden Bullets . As for the Wind-Gun , which by means of Air only doth discharge Bullets with an extraordinary Violence , the same may be made after this manner . Suppose CA , in the Figure , to be a Brass Pipe , or Bore ; and let the end thereof , marked A , be well stopt , and be furnish'd with its Stock , and with two Keys I and K , so as that one of them may touch the other ; and having open'd both the Keys , let a Plug be put in at the Mouth of the Bore C , by the help of a Screw , the Operation being several times repeated , in order to a stronger Compression ; then let the Key K be shut home , and the other Key I be a little open'd , that by letting in of Air the Plug may be drawn forth ; then let a Bullet be put into the Bore , with a little Tow , to keep it in ; then open first the Key I , and afterwards K , and there will follow a forceable explosion or discharge of the Bullet at a great distance , by force of the Comprest Air. IX . The Compression of the Air raiseth Quicksilver two Foot high , and keeps it so suspended . It is from the same Compression of the Air , that Quicksilver contain'd in a Glass-Pipe , open at one end and stopt at the other , remains suspended 2 Foot and a quarter high ; whereas Water is raised to almost 32 Foot. For take a Glass-Pipe AB , 3 Foot long , being open at the one end A , and Hermetically sealed at the other B ; let it be fill'd with Quicksilver , and turn'd upside down into the Vessel CD , also full of Quicksilver ; it will clearly appear , that the Quicksilver will not sink down to the bottom of the Glass , but will continue suspended in the same almost 27 Inches high , at E. And the Reason is , because the Quicksilver cannot sink lower , but by pressing the Ambient Air , which being already condensed by that which lies upon it , and endeavouring to regain its former Expansion , strives against it , and by reason of the rowling of its complicated parts , cannot ply or give way . For tho' the Quicksilver be very heavy , yet can it not force the Air , consisting of thickish , vehemently extended , and continually rowling Parts , to a farther Compression . X. The Air proved to be the Cause of this Effect . Now that this Effect doth wholly depend on the Elastick Power of the Air , may be perceiv'd chiefly by this ; because in the Pneumatick Engin , invented by Mr. Boyle , if the Pipe fill'd with Quicksilver be thrust into other Quicksilver , as soon as the Air is exhausted , the Mercury no longer continues elevated 27 Inches high , but sinks by degrees , and falls into the Vessel . But as soon as the Air is let in again into the Engin , the Quicksilver riseth again , and takes possession again of its former station . XI . This Sinking of the Quicksilver doth vary according to the difference of Places . Yet we find that the Air hath not the same Force in all Countries , nor resists the weight of Quicksilver alike ; but according as the same is purer or more gross , so the sinking thereof is different . For tho' the Air be a Liquid Body , and be so ranged about the Center of the Earth , that its surface is of a Round Figure ; yet because about the Poles , by reason of the great Cold it is more condensed , than in other places , it must needs be found there in greater abundance ; and consequently must lye more heavily upon the Earth of those Countries , than upon those that are nearer to the Aequinoctial . Upon which account it is , that the Quicksilver sinks less in the Glass-Pipe , in Holland , Denmark and Sweden , than in France , where the Air is more thin and rarefied ; and more at Florence than at Paris : So that in the Year 1643 , in which this Experiment was first tried , the Quicksilver in a Weather-Glass , at Florence in Italy , stopt at 2 Foot and almost 3 Inches : At Paris , at 2 Foot 3 Inches and an half ; and in Holland , at 2 Foot , and 6 or 7 Inches . XII . And of the Weather . And not only so , but this Rising and Falling differs also , according to the Change of the Weather ; for we find that the Quicksilver in a Weather-Glass , sinks more in Fair than Rainy weather , and on a high Mountain , than in a low Valley , or any other place , where the Air is more Thick and Gross , and so strives more against the weight laid upon it . For the Air is condensed according to the Proportion of the weight of the Air that is above it , which is always so much the greater , by how much the Air is lower ; and consequently it is necessary , that this Virtue be greater in that part of the Air , which is nearer unto the Earth , than in that which is farther from it . XIII . All the Motions that are commonly attributed to the avoiding of a Vacuum , are caused by the Weight of the Air. From this Weight , or Elastick Power of the Air , proceed all those motions which are commonly ascribed to Natures abhorrence from a Vacuum , and may be readily explained by it : For no other Reason can be given why the Water riseth in a Pump , but only this , because it is pressed by the Air , that is about it , and so tends thither , where there is either very little or no pressure at all of the Air , viz. within the Bore of the Pump , out of which the Plug is pull'd ; as hath been explained in our General Physicks , by many Instances . CHAP. XV. Of Meteors in General . I. What Meteors are . WE come now to treat of those things that are generated in the Air , commonly called METEORS : Which are nothing else but certain various impressions made upon the Elements , exhibiting them sometimes in this , and sometimes in another Form. And because for the most part they appear on high in the Air , they have got the Name of Meteors from their Elevation . II. Meteors are Threefold . METEORS are Threefold , viz. Fiery , Airy , and Watry , according to the Predominion of that Element , which is most conspicuous in them . Book . 1. Part. 6. Chap. 16 G. Freman . In I. Kip S. To the Honourable John Granville Second Son to the Right Honourable John Earle of Bath &c. a This Plate is humbly Dedicated by Richard Blome IV. Airy . AIRY METEORS , are those which consist of Flatuous and Spirituous Exhalations , such as the Winds are . V. Watery . WATERY METEORS consist of Vapours or Watry Particles , by the Action of Heat separated from each other , and variously modified . These are manifold . VI. As Clouds , Snow , Rain . For if these Vapours be elevated above the Earth , and hanging in the Air , are either by a West-wind , opposing the ordinary motion of the Vapours Westward ; or by Two other Winds , blowing from different Quarters ; or by the alone Coldness of the Air , condensed and joyned into some small Icy particles , Clouds are generated . If these Icy particles chance to be resolved by the Heat of the Sun , or of some Wind blowing from a hot Quarter , and the Wind driven together , do entangle with one another like Carded-wool , they make Snow ; but if they be wholly melted into Drops , they constitute Rain . VII . Hail . But when a Cold wind blowing congeals these Drops , when they are either altogether or almost dissolved , they become turned into Hail . VIII . Mist , Dew , and Hoar-Frost . If the Vapours hover near the Earth , they are called a Mist , which continues either till it be drawn upwards by the Rays of the Sun ; or that by its own weight , or some other External Cause , it falls down to the Earth ; where , by a less degree of Cold , it is changed into Dew , and by a greater , into Hoar-frost . IX . Appearing Meteors . There is another sort of Meteors , which are called Appearing ; such as are Mock-Suns , Mock-Moons , the Meteor called Virgae , in the appearance of a Fire-brand or Rod , the Rainbow , &c. X. A Mock-Sun and Mock-Moon . What these are , and how they are formed , take this short account : When the Extremities or Ends of a Snowy Cloud , being dissolved by Heat , are by a supervening Cold wind constipated into thin Ice , and such a Cloud as this happens to be opposite to the Sun or Moon , then is the Image of either of them reflected in the said Cloud , as in a Looking-Glass . That of the Sun is called Parelius , or a Mock-Sun ; and the other of the Moon , Paraselene , or a Mock-Moon . XI . Virgae , a Meteor in the form of a Bundle of Rods. Again , when a watry Cloud is compos'd of Parts , whereof some are more close and compact , and others more loose and lax , and the Sun-beams chance to pierce the more lax and open parts of it , then it exhibits a Meteor , representing a Bundle of Rods , which the Latins call Virgae . XII . The Rainbow . Lastly , If a Cloud be resolved into small Drops , and the same be illustrated by the Sun plac'd over against it , then is form'd a Semi-Circle of divers Colours , called the Rainbow ; whereof more hereafter . CHAP. XVI . Of Meteors in particular ; and first , of the Winds , Clouds , and Mists . I. What Wind is . WIND is a Vapour agitated and rarefied , which by passing from a narrow place , into one that is more large and wide , sensibly drives the Air before it . II. What is properly to be understood by the word , Wind. The Name of WIND is improperly attributed to the Agitation caused by a Fan or a Bellows : Neither can Air that is moved or rarefied by Fire , be called a Wind ; seeing that the Air may be variously moved , when yet there is no Wind at all ; as when Drums are beaten , or great Guns discharged . For we speak here only of a Natural Wind ; which is nothing else , as hath been said , but an Agitated Vapour , which being distended , makes its way out of a narrower Space , wherein it was pent up , into a larger ; and by this means sensibly driving the Air before it . If there chance to be a meeting of many Vapours together , then , according to the Quantity of Matter , the Wind is so much the greater , and diffuseth it self far and near . III. Whence Vapours and Exhalations do proceed . VAPOURS derive their Original , not only from the surface of the Water , but likewise from the moist Earth , Clouds , Snow , &c. for the parts of these Bodies being not so firmly united , are easily disjoyned , and so break forth into the Air ; where meeting with several Exhalations in their way , they together with the Air carry them along with them ; because the Air , as well as Exhalations , contribute much to the Force and Violence of Winds . Tho' Vapours proceed promiscuously from the Earth and Water ; yet the Sun shining raiseth more of them from the Sea , than from the Earth . And on the contrary , the Earth being heated with the Sun-beams , in the Night time , sends forth more Vapours , than the Sea ; because the Earth longer preserves the heat of the Sun , than the Sea. Whence it is , that in the day time Winds are frequently perceived to blow from the Sea , and in the Night time more from the Land ; as at Jamaica , and other of the American Islands . IV. How Winds are raised , by the Example of an Aeolipyle . Forasmuch therefore as the Globe of Earth and Water doth surnish a vast number of Vapours and Exhalations , which for the most dilate themselves between Clouds , Mountains , and other Bodies that are about them , by the force of this their dilatation , they rush from the places where they are streightned , into those where they find more Room and less Obstacles , and there vehemently tossing the Air , produce a Wind ; much in the same manner , as we find that VVind is excited in Aeolipyles . Suppose we therefore an Aeolipyle ABCDE of Brass , all hollow , with a very narrow Orifice D , by which water is poured into it , the part ABC , to be full of VVater ; and other AEC , to contain nothing but Air. This Aeolipyle being set near the Fire , as soon as it is thorough hot , many of the watry Particles begin to whirl round , and being elevated above the surface AC , and variously dashing against one another , rush through the narrow hole D , ( where they find the least Resistance ) with great Violence , and putting the Air into a great Commotion , they produce a wind from D to F. Thus we may know and judge by this little Instance , of the great and wonderful Causes of VVinds. V. Mountains compared with Aeolipyles . For the Hollow of Mountains may be compared , to the Cavity of this Aeolipyle : The Heat shut up in the Bowels of the Earth , to that whereby the water in the Aeolipyle becomes dilated and elevated : The water , which the Sea by Subterraneous Channels conveys into the Earth , to that which is contained in the said Vessel : And lastly , the Clefts of the Earth , at which the Vapours and Exhalations come forth , to the Orifice thereof . Only with this difference , that the smallness of the Hole in the Aeolipyle causeth the Vapours to rush forth with greater violence , than they do from the more open and manifold Clefts of the Earth . Yet doth not this hinder , but that sometimes VVinds may have as violent a Blast , as that which is perceived to rush through the small Hole of the Aeolipyle ; because some Mountains are so situated , that the Vapours that come from them , can but go one way , which makes them move with great violence and swiftness . Tho' sometimes also VVinds may rise in those Countries , where there are no Mountains at all , viz. when the Vapours that move from a higher to a lower Place , are by the Clouds or Mists they meet with , forced to discontinue their course , and to turn off side-way . VI. Which are th Card●●al Winds . According to the various parts of the Horizon , or Quarters whence the VVinds blow , they are denominated Cardinal or Cellateral . The Cardinal VVinds are four , so called , because they blow from the four Corners of the VVorld . The East wind , from the Sun-rising ; the South wind from the South ; the VVest wind , from the Setting of the Sun ; the North wind from the North. VII . Which the Collateral . The Collateral winds are those , which are inserted between two of the Cardinal ; and these , according to the Account of our Modern Seamen , amount to 28 ; viz. 7 between the East and South wind , 7 between the South and VVest wind , 7 between the West and North wind , and as many between North and East wind . So that the Cardinal and Collateral winds put together , make up the Number of 32. VIII . The Names and Order of the Winds . To the end that the Order of the Winds may be the better understood , it will do well to mind the Figure , where they are all set down by their usual Names . The first is the North wind , the second is the South-wind , the third is the East-wind , and the fourth the West-wind ; which are called Cardinal winds . The 4 that follow are called Collateral ; each of which is placed in the midst of 2 Cardinal winds , and hath its Name composed of the 2 Cardinal winds , between which it is placed , viz. the North-east wind , the North-west wind , the South-east wind , and South-west wind . The 8 remaining Winds , which are placed each of them betwixt a Cardinal and Collateral wind , take their Denomination from them both : Thus that which is between the North and North-east wind , is called North-North-east ; and so of the rest . IX . Why the East-wind blows in the Morning , and the West-wind at Even . The East-wind is chiefly found to blow in the Morning , because the Sun heating the Air , doth dilate , rarefie , and makes it to move in one and the same C untry ; sometimes one way , sometimes another , according as he is placed with respect to that Country . For this diversity of Position produceth variety of VVinds. As for Example , When the Sun riseth to us , he dilates the Air , as hovering perpendicularly over it , and doth so whirl it round , that one part of it rusheth towards the VVest , where we are ; whence it is that we then perceive an East-wind . On the contrary , when the Sun sets , the Air that is opposite to him becomes dilated , and thereupon one part of it must betake it self to the East , where we are then with respect to the Sun , and therefore must perceive a VVest-wind . And the same happening in all the Countries that are situate without the Torrid Zone , it follows , that in the Morning East-winds must blow , and at Even-tide West-winds : As I have exprest it in a Figure , in my History of Nature , Part VI. Chap. II. X. Why the North-wind , for the most part blows in the day time . And with the like facility a Reason may be given , why North-winds most frequently blow in the Day time ; by observing that the Earth EB FD , under the Poles EF , where it is not much heated by the Sun , is surrounded with Clouds and Mists ; and that at B , where the Sun sends down his direct and perpendicular Rays , many Vapours are raised , which are carried upwards till they come thither , where , by the force of their own weight , they are more easily turned Side-ways , to continue their way towards I , and M , above the Clouds G , and K , than to mount higher in a Right line . And forasmuch as these Clouds G , and K , become rarefied by the heat of the Sun , the Vapours proceeding from thence , do rather take their progress from G , to H , and from K , to L , than to E , or to F : For the thick and gross Air , which is under the Poles , makes a stronger resistance , than the Vapours that rise from the Earth , towards the South ; for these being strongly pusht , and on all sides ready for motion , do easily give way to them . So that if we suppose the Northern Pole to be towards F , the motion of the Vapours from K , to L , will excite a North-wind blowing in the Day time through Europe . XI . Why the South-wind mostly blows at Night . Altho' the Sun ceaseth its Action in those Countries , where it is Night ; Yet because the heat imparted to the Earth in the Day time , is for some time preserv'd in it , it so happens that many Vapours are thereby raised , which the Air at P , being condensed by the Cold of the Night , hinders from roaming towards Q , and R ; like as those which are in the other part , wander towards I , and M ; but they are there ( for we suppose it to be Night in the part D ) gather'd into Clouds , which hindring other Vapours raised out of the Earth from ascending to any great Height , do on every side beat them down towards N , and O , and so produce a South-wind , which commonly riseth at Night . XII . The East-wind is much stronger than the West-wind . As Winds proceed from different Quarters of the World , so they differ in their Properties : For those that blow from the East , are more violent than those that proceed from the West ; and this partly , because these comply with the motion of the whole Body of the Air ; and partly , because the Air that is dilated and blows towards the West , tends to a place , where for 18 Hours it hath not been Noon : So that by this long absence of the Sun , the Air is much more condensed , than that to which the Western ▪ winds tend ; because there it is not above 6 Hours since it was Noon , and the presence of the Sun , caused a great heat and rarefaction of Vapours . XIII . The North-wind is more 〈◊〉 than the S●●t●-w●n● . The North-wind for the most part is very strong and impetuous , because it is excited by the greatest heat , viz. that of Noon-day ; and because it consists of a Matter that is most easily dissolved into Vapours , viz. Clouds . And for the contrary Reason , the South-wind must be the most gentle , as well because the Thickness of the Nocturnal Air , is a stop to its Course , as likewise because the Matter whereof it consist , as proceeding from the Earth , or from the Water , cannot be so readily , nor so copiously dilated , as is the Northern matter , which , as we have already said , is pour'd forth from the Clouds . XIV . The East-wind is more dry than the West . As to the other Qualities of the Winds , it is notorious that East-winds for the most part are dryer , and produce a more serene and clear Air , than those that come from the West ; because these latter , by striving against the Natural Course of the Vapours , do stop them , and drive Clouds together , whereas the former do dispel and dissipate them . XV. Which Winds are said to be Dry , Moist , Hot and Cold. Hence it is evident , that the North-wind is of a more drying Quality , that is , hath a power of driving watry Particles out of the pores of Bodies , or from their Outsides , whilst they are expos'd to the Air ; because , for the most part , it is composed of the grosser parts of Fresh-water , mix'd with the Air. The same VVind is likewise cold , because it carries along with it the most subtil Northern matter , towards the South , which is the Primary Cause of Cold. But the South-wind is hot and moist : Moist , because it consists of the more gross , and subtil parts of Fresh-water , elevated together from the Earth : And it is Hot , because it brings along with it the Subtil matter , which was in the Southern quarter , towards the North. For the VVinds are much alter'd , according to the place through which they pass ; and therefore , according to the Nature of the Region through which they go , are either Hot , Cold , Moist , or Dry. XVI . The Regularity of the Winds is sometimes hindred by particular Causes . All these things we have here spoken concerning the 4 Cardinal-winds , would happen so continually , if the Earth in all its parts lay equally above the VVater , and there were no difference of Soils and Springs , nor any other Cause , but the presence of the Sun , to dilate the Vapours ; but there are so many other Causes that conduce to the production of VVinds , that it is no wonder to find them so irregular , and not to rise in the same Order . Wherefore we cannot with Reason expect Regular winds , save only in those parts of the Sea which are most remote from the Land. Forasmuch as there is no such great inequality in the surface of the Sea , as there is in that of the Earth ; and because the VVinds , which are driven that way from the Shoars , very rarely can reach so far ▪ as to disturb the Course of those VVinds that blow there . XVII . What Winds are called Perennes , or Continual . Besides the foremention'd kinds of VVinds , some VVinds are called Perennes , that is , Continual ; others stati , or such as blow at certain Times and Seasons ; others , Provincial ; and others , Free. The Continual VVinds are 2 ; the one in the Torrid Zone , which continually blows from East to VVest : The other in the Temperate Zones , which , as far as about the 40 th Degree , blows also from the East to VVest . These VVinds are very observable at Sea , but are scarce discernible at Land. XVIII . What Venti stati are , that is , such as blow at certain Seasons . VVinds , Named by the Latins , stati , are such as return at certain and set Times . The most famous of this kind are the VVinds called Etesiae , which return every Year , towards the end of July , and continue 40 Days together , especially in Italy and Aegypt : They blow at Night , about 3 hours after Sun-set , and for the most part cease at the approach of the Evening . Their Course is from the East or the North , or from between them both . XIX . Provincial Winds . Provincial VVinds are such as blow in certain Provinces or Countries : Such is the North-wind , that blows on the North-side of the Alpes , according to the Course of a River , about 1 or 2 Leagues in length , but much less in breadth . This is a Daily-wind , and seems to blow continually , and with great evenness , like a River . XX. Free Winds . Those are called Free-winds , which without any order of time or place , do blow from different Quarters . Thus the VVest-winds blow most commonly about Noon , or after , when the Sun is hastning towards its setting . The South-wind frequently riseth at Night , and blows more vehemently than in the Day time ; whereas the North-wind blows more in the Day time , than at Night . XXI . The Original of Clouds . As Vapours that are dilated in the Air , do produce Winds ; so when they are comprest and condens'd , they make Clouds . Which then happens , when their motion is diminished ; for then their little Particles come closer together , which as soon as they are joyned , rise up in little heaps , and these gather'd together compose vast Bulks . For the Clouds are nothing else , but Vapours and Exhalations sublim'd so high , that the Coldness of the Air makes them come together , and so to constitute a Whole , which is so loose and spungy , that it cannot by its weight overcome the Resistance of the Air , which oppeseth its descent . XXII . How Clouds come to darken the Light of the Sun. Clouds do often interrupt the Action of Light ; for tho' the Drops of Water , and the flocks of Ice whereof they consist are singly transparent ; yet their multiplied Surfaces do repress the Light of the Sun. As appears in Froth , which because of the various surface of its Parts , cannot receive the Light. The Cause of this Condensation is , either the Winds which compress the Vapours together , especially if they be opposite , and blow from divers parts ; or else the figuration of the Particles that compose the Vapours , whereby they are more fit to cling and close together . XXIII . How Clouds are supported in the Air. The Reason why Clouds do not fall down out of the Air upon the Earth , is , because their Particles are very thin , and have large Surfaces , their Matter consider'd , and therefore are easily born up by the Air , which is ever thicker near the Earth ; or else are hindred by the Winds from coming down : Much in the same manner , as a deep loaden Ship , is born up by the weight of the Water . Hence it is , that according to the less , greater , or equal weight of a Cloud , it doth either ascend , descend , or hang equally pois'd in the Air ; even as a Ship , proportionable to its less , greater or equal Gravity , doth rise , sink , or is evenly pois'd in the Water . But when the particles of the Clouds are so thick , that they can no longer be kept up by the resistance of the Air , then are they resolved into Water , and by their weight fall down to the ground . XXIV . The difference between a Mist and a Cloud . A MIST differs from a Cloud , only by the diversity of its place ; for Mists are Vapours that reach to the very surface of the Earth ; whereas those that constitute the Clouds are pois'd in the Air. For a Mist is nothing else , but a Duskish Vapour , hovering on the Earth , which continues either till it be drawn up by the Rays of the Sun , or by its own weight , or some other outward Cause , falls down to the Earth . 〈…〉 the Clouds . 〈…〉 are to take notice that the Parts of Ice , 〈◊〉 of I have said that Clouds consist , are not so 〈…〉 together ; but that there is some distance between , so as to make up several little Heaps : So that if they chance to be ●haken with any strong Wind , they are easily separated , and fall down to the Earth . If these Hillocks or Flocks are not wholly dissolved , they make Snow . But if the Air , through which they are carried , be so hot as to make them to melt , they come down in Rain . It happens also sometimes , that after they are turn'd into Drops of Water , a Cold wind meeting with them , congeals them into Hail ; for Hail is nothing else but frozen or congealed Rain . CHAP. XVII . Of Rain , Dew , Hoar-Frost , and the Cool Evening Air. I. What Rain is . RAIN is nothing else , but those Drops into which a Vapour elevated above the Earth , is resolved . We have a resemblance hereof in distill'd Liquors ; for the rising Vapour , being condensed by the Coolness of the Air , returns to its former state , and runs together into Drops , which at first are insensible , but in their falling do wn are commonly increased , by others joyning with them ; and those commonly are the largest , that fall down from the highest place . II. Whence the difference of Rain doth proceed . We must not therefore suppose , as some do , that Rain is produc'd in the Air , as Water , that by being poured from on high , becomes disperst into many Drops ; or that it is generated in manner of a Pool , the Water whereof falling from the Clouds is dissolv'd first into greater , and then into less Drops ; but only by degrees and by parts : For the Drops of Rain , are formed of the particles of Vapours joyning together , and being joyned fall down to the Earth . Hence Rain hath got several Names , according to the different bigness of the Drops , whereof it consists : For the Rain that falls down in small or midling Drops , is called by the common Name , Rain ; if it drops very small , 't is called a Drizling Rain ; if it falls down in great Drops , and those close and thick , 't is called a Shower ; if it comes down in great Drops , and fiercely , 't is called a Storm . III. Whence the Greatness of the Drops of Rain proceed The Drops of Rain are great , when the Heat acts upon the upper part of the Cloud ; because then the Drops that descend do increase in their passage , by the addition of other Drops they meet with from the top of the Cloud to the bottom Whereas on the contrary , when the action of Heat is only exerted on the lower part of the Cloud , as it commonly happens in the Winter , the Drops are so small , that they are not called Rain , but only a Mizling Dew . IV. How the Rain falls down from the Clouds . Tho' it be evident enough how Clouds , that consist only of Watry Drops , come down in Rain , viz. either by their own weight , when the Drops by the coalition of many particles , have attained to a sufficient thickness ; or , when that the Air that is under them , by its withdrawing , or that which is above , by pressing upon them , inclines them to a descent ; or , when many of these Causes chance to concur : But yet it is not so evident to all , how Rain is generated at first out of a condensed Cloud . V. Rain is sometimes caused by Wind. Now this will be easily made out , if we consider how 2 contrary Winds do gather great abundance of Vapours into the middle Space between them , and thereby cause the production of a Mist or Cloud there . For let us suppose , for Example , a Wind to blow upon the Earth AB , from the West D , and another to blow the contrary way , from the East C , so as that both these Winds come to stop one another about the Space FGP ; it must necessarily follow , that the Vapours intercepted between the wind D , and the wind C , being driven together , must be there condensed , and make a kind of confus'd Mass . In like manner the Wind that drives against this Cloud , yet not with that Violence as to carry it along with it , must drive the parts of it closer together ; by which means many of the watry Particles , which before were insensible , and separate from each other , are by the force of the wind driven together , and so become great Drops , which by their own weight fall down . For as in your common Stills , Drops are not formed as soon as the Vapour is got to the Head of them , for that other Vapours ascending to the top of the Still , must increase their bulk . So neither can Rain be generated , as soon as the Vapours are got up to the Region of the Clouds ; but it is necessary , that those Particles of which the Vapours do consist , be by the Wind driven together , and more closely joyned ; and that being thus become more heavy , so as to be able to vanquish the resistance of the Air , they fall down to the Earth . VI. The more common Cause of Rain is Heat . Notwithstanding that by this way Clouds are often turned to Rain , yet is the Heat of the Air a more frequent and efficacious Cause of it . For this heated Air clinging to the Clouds , makes the subtil Snow , whereof they consist , to dissolve , and separates it into many little Flocks , which have then force enough to drive away the Air that opposeth their descent ; and so by the action of the Heat they meet with in their passage , they are quite melted , and turn'd into Drops : Which sometimes are large , when the Cloud is thick and close , and comes down by the pressure only of the Air that is above it ; because the upper Drops meet with others in their way downward , that increase them and make them larger , as before hath been mentiond . VII . W●y the Drops of Rain are Round . The Drops of Rain , as they fall down , are made round : For a Liquid Body then becomes Round , when all its Parts are by an equal force driven towards some Common Center ; for all the Parts of that Circumference being moved by a like force , are at an equal distance from the Center . Now Rain is a Liquid Body , all whose Parts , when the Air is calm and free from Winds , are comprest by an equal Virtue to some Common Center . For the Calm Air doth on all sides equally compress these Drops , there being no Reason to be given why it should press them one way , more than another . VIII . How the Dew is formed . Having premised thus much concerning Rain , it will not be difficult to conceive how the DEW is formed , if we observe that when the Air is clear and not ruffled with Winds ; many loose and thin little Bodies are disperst abroad , especially in the Summer time , when Vapours and Exhalations are copiously elevated from the Earth : Which small Bodies flying in the Air , in the form of Vapours , when the cold of the Night comes on , do lose their agitation , and many of them clinging together , produce insensible Drops , which falling down upon the Dry ground are suck'd up ; but falling upon the Leaves of Trees , or the Spires of Grass , are there gather'd into greater Drops . This chiefly happens in the Night , or before Day-break ; because then the Earth is most cold , as being turned from the Sun. Whence it follows , that the Dew is nothing else , but certain Vapours , that have by Heat been elevated in the Day time ; and which being condensed by the Coldness of the Night , fall down in small insensible Drops upon the Leaves of Plants ; where many of them joyning together , they become sensible . IX . What Hoar-frost is , and ●ow it is distinguisht from Dew . HOAR-FROST is generated , when the Vapours , that are near the Earth , are congealed by the coldness of the Night : Which only happens in the VVinter , when Cold predominates . For tho' when the Coldness of the Night is yet temperate , it be sufficient to compress the watry Particles up and down disperst through the Air , into sensible Drops , yet not to congeal them : But the Cold of VVinter-Nights being more intense , congeals the said Drops in the form of Snow or Hail . So that it appears , that the difference between Dew and Hoar-Frost is this , That Mists do turn to Dew , if they consist of Drops of water ; but into Hoar-Frost , when they consist of Vapours that are frozen before , or are congealed in their passage down to the Earth . X Why Hoar-Frostt makes Coleworts tender . It is observed , that the Hoar-Frost makes some Herbs , and particularly Coleworts , tender ; the Reason whereof is , because the Cold acting upon them , doth very much condense them , and causeth many humid Particles to congeal together ; which afterwards are easily resolved again by any supervening Heat , and by this means their fibres become in a manner clean dissolved , which is the cause of the Tenderness of those Plants . The like also happens in Flesh , which having been frozen , doth thereby grow very Tender . XI . What the Cool Evening Breez is , which is consequent upon clear Summer days . As to that COOL EVENING-AIR , or Breez , which is consequent to fair Summer-days , we find that it commonly happens when the Heat of the Sun hath been very intense all the Day long , and thereby greatly agitated the Air ; by which means the surface of the Earth also is moved to send forth abundance of subtil Exhalations upwards , to the Region of Vapours ; and because these Exhalations do more easily lose their agitation , than the Vapours do , as soon as they are deprived of the Sun's Heat , the former of these fall down . And herein doth chiefly consist the Nature of this Cool Air , or Breez ; which according to the difference of places , is endued with different Qualities : For it is probable , that those Particles which exhale from places Infected , or poisonous Plants , are far more hurtful , than simple Vapours that arise out of the Earth . XII . When the Cool of the Evening is hurtful . The Cool Air , or Breez of the Evening , is never more hurtful , than when the Day fore-going hath been very clear , and the Heat of the Sun moderate : For the immoderate Heat of the Day doth much extenuate these Vapours , and elevates them on high , so that they cannot so readily be condensed by the Cold of the Evening . It is also very hurtful after that the Sun it set , because the more heavy Exhalations , which have less of Vapour mix'd with them , as soon as they are left destitute of the Sun-beams , do immediately come downwards . XIII . If when the Air is duskish , the Sun shines in the East , it is a sign of Rain . The Air cover'd with Clouds , is a sign of Rain , if the Sun shine in the Morning ; for this is an evident Token , that there are no other Clouds in the Neighbourhood of our Air , towards the East , which can hinder the heat of the Sun from condensing those that hang over our Heads , or from raising new Vapours , whence they might be increased , out of the Earth . But this Cause only takes place in the Morning ; for if it do not Rain before Noon , it cannot afford any signification of what is to happen in the Evening . Neither are those signs , which are taken from the Croaking of Frogs , or Crows , the Praesentions of Beasts , the Redness of the Sun , the Paleness of the Moon , and other such like , any whit more certain , but generally very fallacious : And he that would take the pains to observe them diligently , will frequently find the contrary , to what is commonly expected from such like Presages . XIV . When no Dew falls in the Morning , it is a sign of Rain . Yet we find , that when no Dew falls in the Night , or the Mist is carried upwards , leaving the Earth destitute of all Moisture , this is a sign of Rain ; because this seldom happens , but when the Earth , having not been sufficiently cooled in the Night-season ; or been agitated by too much heat in the Day time , doth send forth abundance of Vapours , which driving the Mist upwards , make its Parts to run together ; by which means they become so great and weighty , as that they are forced to come down in Rain . CHAP. XVIII . Of Snow and Hail . I. What Snow is . SNOW may be said to be a dissolved Cloud , which being driven downwards by its own weight , falls down to the ground in Flocks . It is said to be a Dissolved Cloud ; because a Cloud is nothing else , but a great heap of Snow close clinging together . And it is said to be Dissolv'd , because when the union of the parts of a Cloud are broken by force , one part of it becomes sever'd from its next part , and being more weighty than the Air , comes down in the form of Snow or Rain . It is said in the next place , that it is driven downwards by its own weight . For a Dissolved Cloud , by its own weight , either turns to Snow , Rain , or Hail . And lastly , it is said , that it comes down in sever'd or distinct Flocks . For as a Flock of Wool , consists of many particles of Wool , entangled together ; so the Flocks of Snow are compos'd of may Shaggy particles clinging together . II. How Snow and Hail are formed , and why they are white . It is not always necessary , that the parts of Clouds should be wholly melted before they come down , since it is common for them not to be dissolved , or to turn to Drops , before that they come near the Earth , where the Heat is strongest , as exceeding that which is on high . Wherefore , when the parts of a Cloud that are only condensed , without being melted , do meet with the cold Air , which is no longer able to bear them , they fall down with their own weight , and that in Flocks of Snow , and not in Drops . III. How the Snow , whereof Clouds consist , is condensed . To understand the way how the Clouds come to be condensed , we are to suppose that the Heat which commonly rarefies most Bodies , doth notwithstanding condense that of Snow ; whose Parts are so separate from each other , that the least agitation is sufficient to bring them together . Whence it comes to pass , that when the Air , which is near the Earth , and is always more hot , than that which is at a greater distance from it , comes to elevate it self to the Clouds , either by the Force of some VVind that carries it along , or by the Action of some new Fermentation , which causeth it to swell , it is necessary that it condense the Snow , whence the Clouds are composed . IV. How Hail is produc'd , and what is the figure of it . The Flocks of Snow are of a white Colour , because the watry Matter , whereof they are composed , contain a great deal of Air ; and its pores are so disposed as to reflect the Light , rather than to afford it a free passage , as Ice doth . But if these small Flocks , after that they are melted by warm Air , do afterwards meet with other Air that is cold , and by it are congealed ; then they turn to Hail , whose Stones are of a different Figure , according to the various Solution of the Flocks . For if the Cold wind , that congeals the Hail , doth meet with the Flocks of Snow , when they are almost dissolved , but not yet rounded into Drops , then they obtain an Horned figure ; and when the wind meets with the Drops of water already formed , it produceth little transparent round Pellets , save only that commonly they are somewhat flattish on that side where the wind beats upon them . V. Why the Hail is sometimes of a Conical figure . So that from the divers degrees of Heat wherewith the Air is agitated , and whereby the Cloud must be dissolved , there ariseth a great variety of Effects . For if the Heat , which by the Cold wind is driven into the pores of the Flocks , and penetrates their inmost Parts , chance to drive them towards the Center and condense them , whilst the External parts being become stiff and bound by the Cold , cannot follow , they must of necessity be slit , according to Right lines tending to the Center ; and as the number of these Slits do increase , as the Cold penetrates deeper , they must at last fly in pieces , into many longish and Pyramidal particles , which are so many Hail-stones , which at the first approaching of VVinter , fall down to the ground , especially if a Spring ▪ like constitution of the weather have gone before . VI. Why it seldom Hails in Winter . For it is apparent , that it cannot Hail much in the Winter ; or if it doth , the Stones cannot be great . The Reason is , because during that Season there is seldom heat enough so high as the Clouds to melt them ; but only when they are so low , as that being melted , or near melted ; they have no time to be congeal'd again before they reach the Earth . Whence Hail may be described to be a Cloud that is melted , either whole or in part , and being driven downwards by its own weight , becomes so congealed by a Colder wind , that it falls down commonly in round and transparent Pellets . VII . Whence the different Figures of Hail do proceed . The Hail-stones are sometimes of an Oval figure , viz. when a melted or dissolved Cloud is stronger comprest on one side , by the wind , than on the other . Sometimes they are rough , by reason of many Angles , which happens when a Cold wind seizeth the Flocks of Snow as they are m●lting , but before they ▪ are turn'd into round Drops of Rain . To which may be added , that the Hail-stones are sometimes so violently dash'd against the Earth , as thereby to be broken to pieces , and so lose their Natural figure . VIII . The various Figures of Snow . But much more wonderful is the figure of Snow , which sometimes is Hairy , as in M and Z , sometimes Six-corner'd , and consisting of 6 equal Rays , like Stars , as in O ; sometimes like a Rose , as at Q ; sometimes in the figure of 6 Rays , or like 3 Rods laid Crosswise , which like greater Branches , shoot out lesser Branches from them , the broadest whereof are nearest to the Center , so as to reach and entangle one another ; and the shortest or narrowest towards the Top , making a Corner'd or Angulous Ray or Beam , as in R. IX . How Snow comes to be of a Hairy figure . HAIRY-SNOW MZ , is produc'd , when the particles of Ice , which constitute the Flocks of Snow , being condensed by the heat of the Air , and several times after congeal'd by the Cold , whirl round their own own Centers in the Air : In which motion they are cover'd with some longish and slender particles of Ice , as with Hair , and so exhibit the figure of Hairy-Snow . X. How Snow comes to be formed into the figure of Stars . Snow of a 6 Corner'd or Starry figure , O , is formed , when the Wind , which hath dispos'd the Flocks of Snow into the form of Leaves , by passing freely betwixt them , doth melt the particles of Waters , that stand upright like Hairs ; so that afterwards insinuating it self into the 6 Corner'd Spaces , it melts the most subtil and loose Snow that is about the Circumference of them ; and the particles of Water , being agitated by the force of heat , joyning themselves with others that are not melted , do presently congeal them ; and so their Hair-like Extremities being bent this way and that way , the Flocks grow less , and are changed , as it were , into a small plate of Ice . And as to those Hairy prominences , which are melted in the Circumference of these Intervals , these become condensed , whilst they withdraw themselves towards those which joyn every one of these Flocks , to 6 others that surround it : By which means 6 Breaches , or Slits , are made in the 6 parts of the Circumference , where the Heat is most predominant . XI . How the Flocks of Snow are formed into the Figure of Roses . Snow is formed into the figure of a Rose , Q , when the Heat of the Air is somewhat greater , than what we just now supposed : For then dashing against these 6 prominent Points , it makes them shorter ; and causeth the plate of Ice , which before resembled the figure of a Star , to become like a Rose with 6 Leaves , the points being rounded like the Teeth of the Wheels we see in Watches . XII . How the Flocks of Snow come to resemble Lillies . If the Flocks , whereof Snow is composed , be bigger than ordinary , it may happen that by this means it may be not only divided into 6 places , in order to the forming of 6 points ; but that also every one of those 6 points , be divided into 6 others , by the intervening of 2 Breaches or Slits , from the Hairy prominences or Capillaments , which reach the Capillaments of another Flock of Snow : So that by this means 2 points might be formed , bending outwards ; because the Heat there acting with more vehemence , produceth a greater Condensation : And thus instead of one Starry-point , or a Rose-leaf , there must appear the Leaf of a Lilly , as is represented in R. Book . 1. Part. 6. Chap ▪ 1● To the Right Honourable William Wentworth Earle of Strafford , Viscount Wentworth , and Baron Wentworth Woodhouse , Newmarch , Oversley , and Raby , Knight of the Garter &c. a. This Plate is humbly Dedicated by Richard Blome XIII . How some of these Snowy Stars come to be white , or pellucid . Some of these Snowy Stars are white , like refin'd Sugar ; and others of them are Transparent . The Whiteness of them proceeds from the Mediocrity or Temperateness of Heat ; as when it hath not force enough to pierce to the bottom of the Matter whereof they are composed . Or because in their passage through the Air , they have joyn'd to themselves some particles of Water , before they got down to the Earth . Whereas other Flocks , that are more thin and small , are transparent ; because the Heat hath wholly penetrated them , and made their particles to come nearer , and to be joyn'd more closely together . XIV . How there comes to be a Point in the midst of the Rosie-Snow . One thing remains still to be noted , viz. that there is seen a white Point in the Center of the Rosie-Snow , as is represented in Q. The Reason whereof may be , because the Heat that hath formed these Stars , is so moderate , that tho' it makes all their other parts pellucid ; yet not being strong enough to pierce to their Center , it leaves them white . CHAP. XIX . Of Thunder , Lightning , and Coruscation , or Flashes . I. Lightning and Coruscation follow after Thunder . TO the end that the Nature of Lightning and Coruscation may be the better understood , we must premise something concerning THUNDER ; for usually they are Concomitants of it , and depend on it , as their Cause . Now Thunder is produc'd , when many Clouds rush down upon others that lye directly under them . For it comes to pass sometimes , that the highest Clouds being condensed by Heat , and made more weighty , fall down upon others that lye under them , and cause that Noise which we call a Thunder-Clap . For it cannot be question'd , but that in the Summer time especially there are abundance of Nitrous , Fat and Sulphureous Exhalations , in the Air. It is certain also , that Snowy Clouds are condensed by Heat , and thereby become more Heavy . It is also as apparent , that all Clouds are not of the same height , but some higher , and others lower ; since besides Reason , Sense it self comes to confirm it , which often shews us one Cloud moving over another . These things being thus presuppos'd , we proceed to the Explication of Thunder , Lightning , and Coruscation . II. What is the Cause of Thunder . When any Clouds condensed by Heat , and by this means being become more Heavy , rush down upon an Inferiour Cloud , the intermediate Air being thereby strongly agitated , is the cause of a dreadful Sound , which is called Thunder . For let us suppose two Clouds A and B , composed of loose and much dilated Snow ; let us also suppose , that there is a warmer Air about the upper Cloud A , than about the lower Cloud B ; it is evident , that for this Reason it must be more and more condensed , and consequently become more Heavy : So that its most outward parts falling down first , push others they meet with in their way , and hurrying them along with them , do at last rush down all together , with great Violence , upon the Lower Cloud , with a dreadful rumbling Noise . III. Heat condenseth the Clouds . I have said , that Heat condenseth the Clouds : For tho' Heat do rarefie some Bodies , yet it ordinarily is wont to condense Clouds , as hath before been said of Snow , which consists of the same matter as a Cloud doth . For if Snow be laid in a warm place , it contracts it self into a less Figure , before that any water drop from it , or its weight be diminished . The Clouds therefore being thus condensed , do easily descend , and oppose the passage of others that moved upwards , by reason of their Loosness , and thrust downwards whatsoever opposeth them in their way . And forasmuch as this cannot be without a violent concussion of the Air , therefore it is accompanied with that terrible Noise , the resounding Air making it still louder . IV. What Thunder is . Thunder therefore is a Noise excited by the Air , which hath been intercepted between two Clouds , whereof the Upper falling upon the Lower , and which being forc'd to retire thence , by the weight of the middle part of the Upper Cloud , which continues to come down , forceth for it self narrow and irregular Gaps , to get out by , which produceth a dreadful Sound , being much augmented by the Rarefaction caused by the enkindling of the Nitrous Sulphurs betwixt these 2 Clouds . V. Why Thunder is much more frequent in Summer , than in Winter . It Thunders but rarely with us in the Winter time , because then the Heat that is sufficient to dissolve the Upper Clouds , cannot reach so far . But in the Summer time , when the Heat is violent , and more especially when the North-wind makes the Heat to be more close and stifling , Thunder is produc'd ; because this wind is wont to carry the heated Air , that is near the Earth , upwards , to those higher Clouds ; by which means not only those Superiour Clouds are condensed and rush'd downwards , but also the Lower continue so loose and dilated , and by the Dilatation of the Air that is under them , are so thrust upwards , that they , as it were , meet the others falling down upon them , and stop them there , hindring any part of them from coming down to the Earth . VI. Why every Clap of Thunder i● commenly ●ollow'd by 〈…〉 of 〈◊〉 ▪ Thunder is commonly follow'd by a Shower of Rain , and when the Rain is very copious , it is a sign that little more Thunder will follow ▪ because when the Force wherewith the Upper Cloud rusheth down from the Lower , is strong enough to make it come down wholly , the Thunder must needs cease : And if it be no● strong enough , and the Lower Cloud dissolves into Rain , the same thing will still happen ; because the Air that is shut up betwixt the 2 Clouds , can now with ease get forth , because of the small resistance of the Lower Cloud dissolving into Rain . VII . The 〈◊〉 of Bells to make Thunder cease . The Sound of Bells , and of Canons discharged , makes Thunder to cease ; because thereby the Air is strongly agitated , and communicating its motion to the Neighbouring Air , and that again to the Intermediate , till it reach and shake the Snow , whereof the inferiour Cloud consists , occasions its descent . Which Experience makes evident to those , who are us'd to Travel in those Vallies , where the falling down of heaps of Snow from the Hills is apprehended ; for fearing lest the Sound of their Voice , by shaking the Air , should bring down the Snow , they are afraid so much as to Cough , to prevent that danger . VIII . What is the Cause of Coruscation . The Exhalations that are found in that Space which is between the 2 Clouds , are the matter of Coruscations and Lightning , and according to the degree of Rarefaction and Condensation , produce either the one or the other : For Coruscation proceeds from an abundance of very subtil Exhalations , and very inflammable . For these subtil and sulphureous Exhalations in the Air , become kindled by this Agitation , by reason that the Matter of the first Element being by this Concussion deliver'd from its Bonds , doth most swiftly run through them , which is the Reason of those Flashes . This does frequently happen after great Heat and Droughts ; for then by the dashing together of Light Clouds , a Flame is kindled and breaks forth , which often reacheth our Eyes , without the hearing of any Noise ; because the Clouds dashing against each other , is too soft to be heard at so great a distance . IX . What is the Cause of Lightning . But if the Exhalations , which are intercepted between 2 Clouds rushing against one another be thicker and closer , then with great vehemence breaking through the shatter'd Clouds , and obliquely darted down to the Earth , they constitute the Lightning ; by which ( according to the condition of its own Matter , which sometimes is more thick , or gross and copious , and therefore more Violent ; and at other times , more subtil and in less quantity , and so more penetrative ; or of the matter of its Objects , whereof the more hard and solid , do make a greater and stronger Resistance , because they cannot give way , and so are dissipated by it : Whereas the softer and porous Objects do easily give way , but withal more readily take Fire ) those wonderful and stupendous Effects are produc'd , which strike Mens Minds with Astonishment , and force the most impious Minds , tho' sore against their wills , to revere the Divine Power . X. Of the Thunderbolt . It is commonly believ'd , that besides the Coruscation and Lightning which proceed from the 2 Clouds , there comes forth also a hard Stony substance , which is called a Thunderbolt , tho' it is own'd that the same is not always discharg'd , as oft as it Thunders ; but some think this is only asserted , and not proved . Yet if any such thing should be , we must suppose it to be generated of some gross Matter , which in its descent , hath by the great Heat been reduc'd to that hardness . XI . How the Lightning differs from Coruscation . The difference between Lightning and Coruscations or Flashes , is this : Coruscations or Flashes , may be caused by Exhalations that lye under one Cloud only ; whereas Lightning doth not proceed , but from such Exhalations as are intercepted betwixt two or more Clouds . Because Lightning is an Exhalation with a great force breaking through the Clouds , which cannot be , but by Clouds that lye one upon another , when by the heavy fall or rushing down of the upper Cloud , the Exhalations are kindled , and through a Breach made in the Lower Cloud , are darted downwards towards the Earth . We must conceive that the whole Upper Cloud rusheth down upon the Lower equally and altogether ; for then it Lightens , by reason of the kindled Exhalations breaking through the Lower Cloud . XII . The Definition of Flashing ing and Lightning . For Flashing or Coruscation is nothing else , but an Exhalation spread under a Cloud , which by the motion of the said Cloud rushing downwards , is set on fire , and flasheth . Much after the same manner , as a Torch newly put out , and yet smoaking , is by some violent and sudden motion again enkindled . But Lightning is an Exhalation intercepted between two or more Clouds , which by the Heavy Fall of the Superiour Cloud is not only kindled , but through the Lower Cloud is thrust down to the Earth . XIII . Why the Lightning commonly strikes Mountains and the Tops of Steeples . The Lightning doth more frequently strike the Tops of the Mountains and Steeples ; for seeing that the Clouds , where the Thunder is generated , are high , and that the breach is usually made at the end of them ; it cannot well be conceived , but that the Exhalation that breaks forth thence , rushing down slantingly , must needs meet with the highest Bodies first . To which we may add , That if 2 Clouds , whose Ends are separate from each other , were to open in the Lower part of them , we must suppose that it would rather happen in that part which answers to the High Body ; because the same , by hindring the descent of the Air , doth determine it by its Resistance , to break rather in that place , than in any other . XIV . The various Effects of Lightning . The various Effects of Lightning are to be attributed to the composition of the several Exhalations . It burns the Cloaths or Hair of a Man , without touching his Body ; because the Exhalations whereof it consists , is of the nature of Oil , whose flame is weak . Sometimes it melts the Gold that is in a Mans Purse , and the Sword in the Sheath , without hurting the Purse or Sheath ; which happens , because the Exhalations are very subtil , as participating of the Nature of Salt and Aqua-Fortis , by which means they pass through porous Bodies without any Impediment or hurt to them ; but dissolve whatsoever resists entrance . As we find much the same effect of Aqua-Fortis , which dissolves the Hardest Bodies , and yet leaves Wax , and other Soft Bodies , in a manner untouch'd . CHAP. XX. Of the Rainbow , Circles about the Sun and Moon , and of Mock-Suns and Mock-Moons . I. The Definition of a Rainbow . THe RAINBOW may be defin'd a Bow of diverse Colours , which the opposite Sun paints on Drops of Water by a various Modification of his Light. It is called a Bow , because it is represented in the figure of half a Circle . For the Rainbow is a portion of that Circle , which is drawn from that Line , as from its Center , which passeth from the Sun , through our Eye , called the Axis Visorius . It is said to be of many Colours ; because of the several Colours which may be discern'd in it . And lastly , it is said , That the opposite Sun paints , or represents it , in Watry Drops , these being indeed the Matter of a Rainbow . II. What things are to be noted in a Rainbow . We shall the better be able to understand the nature of a Rainbow , by taking a view of all the particulars that are contained in it . First then , we say that the Rainbow is represented in a Dewy Cloud . Secondly , That the Dewy Cloud consists of innumerable drops opposite to the Sun. Thirdly , That every one of these drops are like a Globe of Glass filled with Water . Fourthly , That all and every one of these drops , being heavy , and consisting of particles of water joined together , are carried downwards . Fifthly , That the Rainbow is produced in such a manner in that part of the Air , which is opposite to the Sun ; that the Spectators are in the middle between them , so that if a line drawn from the Sun to the Eye of the Spectator , should be continued , it would pass through the Center of the Rainbow , and consequently that the Center of the Rainbow , the Eye and the Sun , are placed in the same line . Sixthly . That the drops of water , illustrated by the Sun , must be round , and send back the Sun-beams from each part of their surface , either by Reflexion or Refraction . III. How many ways the Solar Rays may be transmitted to us from objects . To the end we may the better conceive , how the various colours of the Rainbow are represented to us , we are to presuppose that we can never perceive them , but when the Sun shines , whose Rays are either reflected to our Eyes from the surface of some Opake Body , or are transmitted to us by passing through a Body that is partly transparent , yet ting'd with some colour or other : Or , Lastly , They reach our Eye by passing through some Diaphanous Body , wherein they have met with some Refraction . For no other way can be imagined for Beams to come to us , besides one of these three . Now because these Beams which proceed to our Eye , from a Dewy Cloud , cannot be said to be reflected from an Opake Body , seeing it is not at all probable that any such can be so suddenly form'd in the Air : or any Body that is in some sort Transparent , but yet coloured , to send back the Rays of Light to us in such a manner as is necessary for us to see the appearance of a Rainbow : and that we find by experience , that when a Rainbow appears , the Air is full of watry or dewy Drops , which are transparent , without any colour ; therefore we may with good ground conclude , that the Rainbow represents these colours to us , only by the mode or manner of the Sun-beams acting upon the Drops they pass through , and so suffering some Refraction . IV. There be many other things that represent the Colours of the Rainbow . This may be confirm'd by many Examples , as by water spouted out by FULLERS when they bedew and moisten their Cloath . In those Bubbles which Children make by dipping a Straw or other small Pipe in a Lather of Soap and Water . And in Artificial Fountains that cast up Water to a great height , which being there disperst in the Air do exhibit the form of a Rainbow on these scatter'd drops , illustrated by the Sun. V. What are the Primary and Secundary Colours of the Rainbow . The chiefest colours are Scarlet or Crimson Red , which is seen in the utmost part of it ; next to which is Yellow , the third Green , and the inmost Purple or Violet colour , or as others will have it Blew . I said that these are the chiefest colours , because by the mixture , passage and termination of these , many other colours arise . The foresaid colours are chiefly seen in the Primary Rainbow , which many times appears alone . But in the Secondary Rainbow , which is higher and more large than it , these colours are weaker , and turn'd the contrary way : for in it the Purple is the utmost colour , the next Green , the third Yellow , and the lowest deep Scarlet . And the same thing happens in a Prism , according as the same is beheld upwards or downwards , for accordingly the order of those colours appears inverted to us . VI. What is the Cause of the Colours in the Rainbow . As to the cause of these various colours that appear in the Rainbow , it will be sufficient for us to know that Light is nothing else but a certain action or motion of a subtil matter , whose particles , like so many Globuli or round Pellets , are conceived to roul through the Pores of Earthly Bodies ; which Globuli , according to the variety of the Causes , which determin their Actions or Motions , are diversly moved . So that if we suppose them to be so determined , that they whirl round with a greater force , than they move according to a Right Line , they produce a Deep Red Colour : if they be not whirl'd about altogether so strongly they imprint the sensation of a Yellow . And on the contrary , if they be not whirl'd about so fast , as used to be at other times , when there is no such Cause to resist their motion , they produce a Green colour ; and a Blew when they are mov'd much more slowly . VII . How these various Colours do appear in the Rainbow . How these Colours are produced , we shall easily apprehend , by exposing a Globe of Glass BCD , to the Sun ; for then we shall see , supposing the Sun to shine in the part of Heaven AFZ , and the Eye placed in the point E , that the part D , of the Bottle or Globe of Glass , will be ting'd with a deep red colour . And that whether we bring it nearer , or remove it farther from us , the same colour will still appear to us , provided we keep the same station ; and that the line DE , with the other EM , which we are to conceive drawn from the Center of the Eye , to the Center of the Sun , do constitute an Angle of about 42 degrees , for then the part D will be equally coloured Red. But if we should dilate this Angle a little , this Redness will disappear ; and if we contract the said Angle , then will it not altogether vanish , but will first be divided into two parts less bright , in the which Blew , Yellow and other colours will appear . Afterwards if we proceed and view the part of the Glass Bottle K , we shall observe , by making the Angle KEM , of about 52 degrees ; that the said part K , will be likewise ting'd Red , but not so bright and lustrous as that of D ; and that upon dilating the said Angle , as before , other colours will appear , but more weak and fading , and that upon our contracting the same , or by dilating the same much wider , they will wholly vanish . From which instance we are plainly inform'd , that the whole space of the Air to M , being filled with such Glass Globes , or which is equivalent in this case , with drops of Water , some point of them must be ting'd with a Red colour ; from whence the lines drawn to the Eye E , will with the line EM , constitute a line of about 42 degrees , such as we suppose those to be that are marked by the Letter R ; and that these points considered altogether , without observing the place wherein they are , save by the Angle under which they are beheld , will appear like a continuous Circle of a Red colour ; and so likewise that there must be some points in those Drops , which are at S and T , from whence lines drawn to E , will constitute somewhat more acute Angles with EM , by which the Circles of the more weak and fading colours are composed . And that in this the Primary or Inward Rainbow doth consist . Then supposing the Angle MEX , to be of 52 degrees , that a Red Circle must appear in the Drops at X , and other Circles of a less deep colour , in the Drops at Y ; and that in this the Secondary or outward Rainbow doth consist . And lastly , that by all the other drops marked V , no colours at all are produced . VIII . A Primary Rainbow is represented in the drops , after two Refractions and one Reflexion . A Primary Rainbow therefore is produced by those Rays which come to the Eye after 2 Refractions , and one Reflexion ; whereas the Secondary is generated of the Solar-beams , reaching the Eye , after 2 Refractions and 2 Reflexions . For if we make a more accurate search whence the Red colour proceeds , which appears in the part D , of the Round Glass , we shall find that it d●pends on the Sun beams ( which we look upon as so many parallel lines , because of the vast distance of the Sun from us ) which coming from A , to B , entring the water , are refracted in the point B , and go on to C , whence being reflected to D , and there coming out of the water , and a second time refracted tend to E. For as soon as any Opake Body shall be opposed to any of the Lines AB , BC , CD , or DE , immediately the Red colour will disappear ; and tho' we should darken the whole Ball of Glass , excepting only the 2 points B and D ▪ and should round about beset it with Opake Bodies , provided nothing do hinder the Action of the Rays AB CD , yet the same will shine brightly . Afterwards having in the same manner searched out the Cause of the Red colour appearing in K , we shall find that the same depends on the Solar Beams , which coming from F to G , are there refracted towards H , and in H , reflected to I , and again from I , reflected to K ; and lastly being again refracted in the point K , tend towards E. And therefore a Primary Rainbow is represented in a Dewy Cloud , or in the several drops oppsit to the Sun , after 2 Refractions and 1 Reflexion : but the Secondary after 2 Refractions , and as many Reflexions . IX . It always rains in that place where the Rainbow appears . If any object that Rainbows sometimes appear in those places where there falls no Rain at all ; and therefore they do not always proceed from those Causes we have here assigned to them . I answer that a Rainbow is ever represented in Rainy Drops , and that they never appear but in rainy weather ; for the Rainbow is an individual companion of Falling Rain , tho' possibly it may not rain in that place from whence the Rainbow is seen , yet sure it is that it must rain in that place where it appears . X. Rainbows appear variously according to the different position of the Spectator . Tho' a Rainbow be visible to all , yet it is not seen by all after the same manner : For seeing that the Drops which appear stain'd with some colour , are perceived about the Axis Visorius , under a certain Angle , and that all Spectators have a different Axis , it follows that every one of them must have his peculiar Rainbow . Yea , if the same person chance to go back , or forward , only some few steps , he will not behold the same , but still a different Rainbow ; seeing that the Drops of VVater , are for example , represented under a certain Angle of Refraction , as the said Angle is enlarged by going forwards , or diminisht by going backwards , the Rays of Light will be variously returned , and will make a different Rainbow . So that there are as many Rainbows , as there are places , from whence they are beheld ; wherefore it is no wonder what the Proverb saith , that the Rainbow flies from those that follow it , and follow those that flee from it . XI . What Halos , are and wherein they agree with the Rainbow . HALOS , or the Circles which appear about the Sun and Moon , are much of the same nature with the Rainbow . For they are round like the Rainbow , or approach to it , and have always some Star for their Center ; for how swift soever the Stars motion may be , it is always found in the Center ; which is a manifest Argument , that these conspicuous Circles or Crowns are produced by Reflexion or Refraction . They agree also with the Rainbow in this , that they are of various colours like it ; whence we must conclude that Refraction , and a shadow that may terminate the Light , are necessary to the Production of these Circles . XII . How these Circles differ from a Rainbow . Yet these Circles differ also from a Rainbow , because a Rainbow is never seen but in rainy weather , tho' it be not necessary that it should always rain where the Spectator is . Whereas these never appear in rainy weather , which is a plain argument that they are not generated by Refraction made in the drops of water , but by that which is made in the particles of Ice , found in the figure of Stars ; for we cannot meet with any other Cause to which we may ascribe this effect . XIII . How these Circles are formed in the Clouds . When therefore at any time there be Clouds in the Air , of a moderate thickness , the Light of the Sun or Moon , piercing the little particles of Ice , whereof they are composed , becomes refracted in such a manner , that not being visible save only to a certain distance from those Stars , it produceth the appearance of several colours , viz. Red on the shady side , and Blew or Purple on the side toward the Sun or Moon . XIV . A further Explication how these Circles are formed about the Stars . As for example , when the Beams , proceeding from the Sun or Moon ABC , darting against a Heap of Icy Stars GEF , lying upon one another , are refracted , and reach the Eye of the Spectator D. For if the Beam proceeding from the point A , to the end of the Icy Star G , and the Ray from the point C , to the end of the little Star F , be refracted towards D , it is plain , that besides the Beams AD , and CD , and such like , which passing in a right line , do represent the Sun or Moon in their proper form ; others being refracted in EE , will make the Air comprehended in this Circle FF , very Bright , and represent its circumference betwixt the Circles FF , and GG , in the form of a Crown or Circle distinguisht with the colours of the Rainbow . So as that the Red colour will appear on the inside about F , and a Blew colour on the outside at G. Book . 1. Part. 6. Chap. 21. To the Worshipfull Thomas Phillips of Southampton in Hant Shire Esq Second Engineer of England & a. This Plate is humbly Dedicated by Richard Blome XVI . How six Suns may be seen in this Circle . In such a Circle as this , there sometimes appear 2 Suns , sometimes 4 , yea and sometimes 6. For let DEFGHI , be a great and round Cloud , the upper part whereof DEF , we suppose to be thicker , as being more exposed to the Wind and the Heat of the Sun. The Sun being sufficiently High to the South A , and the Eye of the Spectator K , 6 Suns may appear in this Circle : The first and chiefest at E , by Beams proceeding from the Sun A , at right lines : the second and third at D and F , by refracted Beams , that penetrate the Ice in those places ; where its thickness decreasing by degrees , they are on both sides crooked or bent inwards . Whence it is that these two Suns cast a Red Colour towards their Circumference , on that side where they look towards E , where the Ice is thicker ; and a Blew Colour on the other side , where it is more thin . The fourth at H , is seen by directly reflected Rays : And lastly , the fifth and sixth G and I , by Rays reflected to equal Angles . XVII . How it happens that less than six Suns are seen . But in case the Spectator be not at K , but somewhere nearer to the point B , so as that the Circle , whose Center is supposed in his Eye , and to pass through B , do not cut the Circumference of the Cloud ; then will not he be able to see the 2 Suns G and I , but only the other 4. And if on the contrary he go back much to H , or somewhat further to C , he will see 5 only , viz. DEFG and I , and removing much more backwards , he will see 3 only , and those 2 not contained within a white Circle , but as it were pierced with a white Cloud . XVIII . What a Mock-Moon is . When such a like Image is beheld under the Moon it is called PARASELENE , that is , a Mock-Moon , which admits of a like application with that of the Mock-Suns already spoken of ; for as a Mock-Sun is the Image of the Sun reflected in a Cloud ; so is a Mock-Moon an Image of the Moon appearing in a Cloud . Such were those which appeared in the year 1671 , the 25 th of May about 11 a Clock at Night , when the Moon was very much declined towards the South , and near the Horizon . CHAP. XXI . Of Fire . I. What Fire is . FIRE is a Company of Particles of the Third Element , moved with the most rapid motion imaginable . Or , it is a Lucid and Fluid Body , consisting of Earthly Particles , most swiftly moved by the matter of the First Element , upon which they swim , as it were . II. Why Fire is said to be hot and shining . Fire is said to be hot , by reason of the various agitation of its Particles , whereby they are most rapidly agitated every way . It is said to be Lucid or shining , because the subtil matter , which agitates the Terrestrial Particles , is whirl'd round , whence whilst it endeavours to recede or withdraw it self , it presseth the Heavenly Globuli , in which pression Light consists . III. The variety of Fire . Nevertheless every Fire is not Hot and Shining ; for there is one sort of Fire which is only shining , as in Rotten Wood and Glow-worms ; and another sort which is hot only , as in Dung , and a third sort that is both hot and shining together . IV. What is the Cause of these various Fires . Fire is only shining when the most subtil matter of the First Element running this way and that way in the strait pores of Earthly Bodies , which resist the entrance of any other matter , doth push forwards the Heavenly Globuli : or else when the said matter is in so small a quantity , that it can only press the Coelestial Globuli , which of their own nature are sufficiently incited to Motion , without being able to agitate the Terrestrial Particles . Again , the Fire will be only hot , when the subtil matter is in such abundance , that it can also agitate those Earthly Particles , but yet withal is so entangled with the Earthly and Watry Particles , that it cannot explicate it self , nor push forwards the Heavenly Globuli every way , in a right line . And Lastly , Fire is both shining and hot , when it is so at liberty as both to be able to press the Heavenly Globuli , and most swiftly to move the Terrestrial Particles . V. Violent Motion produceth Fire . Violent Motions are very proper to produce this effect , because the Earthly Particles , to which they communicate themselves , tho' they be at first encompast with the Second Element , yet they move fast enough to drive them away from about themselves , and to admit nothing but the First Element , which much augmenting their agitation , doth dispose them soon to separate themselves from one another , and to take upon them the form of a Flame . VI. Fire is kindled by driving out the Globuli from the Intervals of the Terrestrial Particles . In order therefore to the kindling of Fire , that is , to the gathering such store of the matter of the First Element , as may both shine and burn , it is necessary that the Globuli be driven out of the Intervals of some Terrestrial Particles , which being afterwards separated from each other , and only swiming in the matter of the First Element , may be snatched away with its most swift motion , and driven every way . That this is so , we shall easily conceive , if we consider that the matter of the First Element doth in swiftness much exceed that of the Second Element , and that those little Bodies which swim amongst the particles of these 2 Elements , can only be carried along by the motion of the Second Element , for that its Globuli do break the force of the First Element , and resist its motion : whereas on the contrary , whilst those Earthly Bodies are surrounded with the matter of the First Element , they must necessarily comply with its agitation , in like manner as we see that a piece of wood is carried away by the swiftness of the stream wherein it swims . VII . Whence it is that the Brightness of a Flame is greater in a dark than in a light Place ▪ Thus we find that the Brightness of a Flame is greater , and more conspicuous in a dark Place , than in one enlightned by the Sun ; because in a place so illustrated , many Globuli of the Second Element from the Sun , are sent into the Flame , which lessen the agitation of the matter of the First Element , and consequently also the violence of the Fire . Whence also it is that when our Optick Nerve is strongly affected by the Fulgid Light of the Sun , the light of a Candle , compared with that of the Sun , seems to be none at all ▪ as being scarcely discernable by our Eyes . VIII . Why Fire is hot and shining . From what hath been said , we may gather the chief Qualities of Fire : for seeing that its particles are solid , and most swiftly moved , they cannot but produce heat , which , as shall be said in the following Chapter , is nothing else save the actual various motion of the little parts of the Body , affecting the sense of feeling . And so also if together with this we call to mind , what before hath been said concerning Light , viz. that it consists in an endeavour of receding from the Center , or in the pressure of the Heavenly Globuli . For seeing that the subtil matter , that constitutes Fire , is constantly whirled round , and endeavours to recede thence , it cannot but procreate the sense of Light , and make the Fire Bright and Shining . IX . Of the several ways whereby Fire may be kindled . Fire may be kindled several ways : First out of Flints , for they being of a hard substance , if other stiff Bodies dash against them , by this means the Globuli of the Second Element , because of the narrowness of the interjected space , are forced to march off , leaving only behind them the matter of the First Element , and so the Earthly Particles which swim upon it , and follow its motion produce Fire and are turned to Sparks . Which may be the Cause why we find that in Subterraneous Places Fire is often kindled . For since there is always in those places a viscous slimy matter , and many exhalations are sublimed there by the Suns heat , it may so happen that one Flint dashing against another , may send forth sparks , by which the exhalations that cleave to the kindled viscous or sulphureous matter , may communicate a flame to the Bodies that are nearest to them . Now that there are such fat and sulphurous Flames in the Bowels of the Earth , is well known to the Miners , and Reason evinceth the same ; for seeing that there is a Fire in the Bowels of the Earth , there must be Fumes arising from it ; seeing also that there are sulphurous hot Bathes , and veins of Jews Lime , and other oily matter boyling in the hidden Channels of the Earth , we may easily judge that from these also a continual Smoak or Fume must proceed by way of exhalation . And it seems probable , that the first kindling of those Fires which burn in Mount Aetna in Sicily , and Vesuvius in Campania , hapned after this manner . X. How Fire is kindled by a Burning Glass . There is also another way of kindling Fire , viz. when the Beams of the Sun are concentred in a concave Glass , for by this means the Globuli acting with their joint forces , do excite a various and vehement excitation of the Terrestrial Particles , whence proceeds a Flame , the Heavenly Globuli being beaten back , by the swift agitation of the Terrestrial Particles , so as that the Particles of the most subtil matter can freely flow together and continue this agitation . XI . Sharp Spirits can also kindle a fire . A Fire also may be kindled by sharp Spirits , as appears in Hay , which if it be laid up before it be sufficiently dry , it becomes hot by degrees , and at last breaks forth into a Flame , because the Spirits of Herbs that are shut up in it , have not so free an egress , as when they were Green , and before they began to be dried ; and therefore being no longer able to enter into the same passages , with the Globuli of the Second Element , they become surrounded only by the matter of the First Element , which putting them into a most swift motion , makes a Flame to appear . But this never happens in Wood , tho' it be struck never so much , because its substance is not stiff enough , that by a concussion of another hard Body , the Globuli of the Second Element should be driven away , because the part that is struck bends towards another , before that the Second begins to bend towards the Third , and that again towards those that are next to it , by which means its force of flying back is lost . XII . How Fire is Nourish● or Fed. But forasmuch as Flame is perpetually turn'd to Smoak , and is no more the same than a River , which is continually supplied by an access of new waters , it is of absolute necessity that it have some Food or Fewel whereby it may be preserved and maintained . And this is no other but those Terrestrial Parts , which being agitated by the matter of the First Element , have a power to drive away the Air or any other Body , that might extinguish it . It is also requisit that these particles be very thin , that they may be able to supply the room of the vanishing Smoak : for the thicker particles are easily surrounded by the Globuli of the Second Element , and possessing themselves of the places which the particles of the First Element have left , do much break the force of the Fire , and choak its Flame . XIII . Oily and Sulphurous Bodies are a proper fewel to preserve Fire . For which reason also all Oily , Sulphurous and Bituminous Bodies are of all others most conducive to maintain and preserve Fire ; for that by reason of the contexture of their Branch-like Parts , and their fit Thickness , they are most fit and disposed to be agitated by the particles of the First Element , and being thereby driven out of their places , to communicate their motion to other Bodies with such force as that they drive away the particles of the Second Element , which otherwise would extinguish the Fire into which they strive to enter on every side . XIV . How Flame is produced . These things premis'd , it will be easie to conceive , that Flame is nothing else but a Fire wholly at liberty , that is , a Fire whose parts are so agitated , that they entirely separate themselves from each other , and do only swim in the matter of the First Element . It will be likewise readily conceived how a Flame is produc'd , by viewing the Candle AB , and reflecting that there be many parts of Wax that move very swiftly throughout the whole space CDE , where they constitute a Flame , because they swim alone in the matter of the First Element . We must also consider , that the parts of Wax that constitute the Flame do continually strive to mount still higher , for that by reason of their great agitation they are more light than the Air , that surrounds them , which having been forced to descend continually , endeavours to return to its place again , and to which indeed it would return , if the new particles of Wax that come forth from the Wick , and which begin to follow the Course of the First Element , did not hinder it ; which is confirmed by experience , which shews us that as soon as the particles of Wax cease to proceed thence , or tho' they do , yet have not force enough , the Flame ceaseth in the space CDE , and the Air possesseth it self of its place . XV. Why the Flame always mounts upwards , and ends in a point . It is peculiar to Flame to mount upwards , and to end in a sharp point ; the reason whereof is , because the Flame , by reason of the great abundance of the matter of the First Element that is in it , being lighter than the Air that surrounds it , must of necessity tend upwards : and because the middle parts of the Flame GDE , are more strongly agitated by means of their greater solidity , than those which are about the utmost parts CC , whose motion is much diminisht by the neighbouring Air , this makes the Flame to end in a point , and its Smoak to break forth chiefly at the top H , where the Terrestrial particles begin to lose their agitation . As for Example , When the Smoak ascends towards H , it makes the Air to descend by I and K , towards B , where razing the Wick , it pushes the particles of Wax towards the flame , which serve to nourish it : Which Circular motion of the Air towards the flame , Experience shews us , in that when a Chamber is close shut , save only some little Hole or Chink , and a Fire be kindled in it , a Wind is perceived to enter in by the said Chink ; and which is so much the stronger , by how much the Fire is greater . XVI . The force of Fire upon Earthly Bodies . Fire is extreamly active , and exerts its Force upon the hardest Bodies ; for its Particles , as so many sharp Needles penetrate their Pores , and driving out the particles therein contained , they divide its parts , and turn them into their own Matter ; and in case the particles of the Bodies , the Fire acts upon , are easily separable , then they melt . For to be melted , or in a liquid form , imports nothing else , but that the Body in that state consists of Particles that are divided from each other , and in some agitation . As on the other hand , Bodies are dried , when by approaching to the fire , their thin and slippery Particles are exhaled , the more thick Parts being left , which being thereby more closely joyn'd together , constitute hard Bodies . XVII . The Ventilation of the Air is necessary , to the preservation of Fire . The Ventilation of the Air is necessary to Fire ; because the Air being push'd upwards by the mounting flame , cannot enter into another place , which the Fire , by consuming its Fewel , leaves open for it ; and whilst it thus succeeds , it like a Fan or Bellows , drives the fire into the more inward parts of the fewel , and dissipating those that are more Heavy , doth thus by blowing preserve the fire : For where this is not , and the Air is hindred from supplying the said place , the flame not being able to give way , becomes choak'd by the more heavy and gross Fumes . XVIII . Fire is extinguish'd by any Liquor poured upon it . Fire is put out , when any liquor or moisture is poured upon it in a greater quantity , than can be put into motion by the force of the fired Particles ; which is the Cause why a little Water increaseth the Fire , whereas a great deal of it doth put it out . XIX . Why the Air must have free access into a Chamber , that the Fire may not fill it with Smoak . Hence it is , that when a Fire is kindled in a Chamber , if the Air hath no free access to it , the whole Chamber becomes presently fill'd with Smoak . Because the Air drives away from it great store of Air , together with the Particles , of combustible Bodies : For it is these that being mix'd with the Air , constitute the Smoak , as the more solid Parts of those Bodies are turn'd to Ashes . And since it is repugnant that there should be any Vacuum in Nature , it is necessary that so much Air enter the Chamber , as there is Smoak going out : For except this be , the whole Chamber will be fill'd with Smoak . CHAP. XXII . Of the Nature of Heat and Cold. I. Heat and Cold do not belong to any species of Quality really distinct from the Subject . HAving already rejected all Qualities really distinct from their Subjects , we shall not trouble our selves with the enquiry , to what Species of these Qualities , Heat and Cold do belong . And the rather , because these Forms are unknown to us ; and if we should admit them , the Enquiry will still remain , by what Virtue they operate , if they be Active ; and how the Sense suffers by them , if they be Patible . Wherefore it remains only for us to determine , to what General Head of things Heat and Cold do belong ; viz. Whether they be Substances , or are only to be accounted amongst the Modes of Substances . II. Wherein the Nature of Qualities in general doth consist . Qualities that belong to Matter are nothing else , but certain dispositions in the Subjects , consisting in Magnitude , Figure , Motion and Situation of Parts , whence they produce several ways of Sensation : Tho there be nothing in these Bodies like to those Idea's they awake or excite in us ; so that tho' the Particles , for Example , of an Hot Object be otherwise dispos'd than those of a Cold , yet in neither of them is there any thing like to those Idea's or Modes of Sensation they stir up in us . III. Qualities are certain Modes in Bodies . If any one therefore enquire , whether these Qualities are Modes existing in Bodies ? We Answer that they are so , if they be taken for the various disposition of Parts ; but not so , if they be taken for those Modes of Perception which they excite in us . IV. What Heat and Cold is . Heat therefore is a Quality arising from a greater and unequal Motion of the Terrestrial Particles : And Cold is a Quality proceeding from the quiet of the Parts , or at least from a less degree of Motion in them . V. Heat consists in Motion , and Cold in Rest . We assert therefore , That Heat is nothing else , but the motion or agitation of the small Parts of a Body ; and Cold , their rest or consistence . Now that Heat is nothing else , but motion , may be proved from its Increase and Decrease ; for we find that Liquid Bodies become hot , when their Particles are put in motion by Fire . Thus we find that boyling Water , melted Metals , and all other things , when set on fire , are very much agitated , neither is heat to be perceived in them , till their Parts be put in motion . In consistent or compact Bodies we likewise find , that when they are struck or rub one against the other , provided it be done with some Force , ( as when two pieces of Wood are rub'd against each other , or a Knife whetted upon a Whetstone ) heat is excited in them both . For the Heat in any Body becomes increased , and grows stronger , by how much the agitation is greater . Hence it is , that nothing , amongst Natural Bodies , is more hot than Flame is , because nothing hath its Parts more agitated , as daily Experience teacheth . And if there appear any difference between one Flame and another , that proceeds only , because the Parts whereof they are composed , are more or less thick ; and consequently more or less powerful to agitate those Bodies , on which they exert their Forces . VI. All the Particles of Fire are moved , but not the whole Fire it self . When we say , That Heat is Motion ; we are not so to be understood , as if the whole Body that is heated were agitated : For it is repugnant that the same Body , should at one and the same time be moved by various Motions ; but only that the small particles thereof be in motion and variously agitated ; that is , that they change their situation , and are differently apply'd to the different parts of ambient Bodies ; so as to be tossed with various determinations , to the Right , to the Left , Upwards , Downwards , Forwards and Backwards , according to their several dispositions and figures . VII . In what sense Liquid Bodies are said to be hot . If any one Object , That according to this Explication it will follow , that all Liquid Bodies , as Water , Wind , Air , and the like , are hot ; because , as hath been said in our General Physicks , their parts are variously moved . For Water is no other ways distinguish'd from Ice , but because its parts are in continual motion ; whereas those of Ice continue always in the same situation . VIII . The Answer to the foregoing Objection . Before I come to give a satisfactory Answer to this Difficulty , I would have it noted , that every agitation cannot be called Heat , but that only which is of force enough to affect the Sense of Feeling , and to shake the Filaments of our Nerves : For if the motion be not strong enough to produce this effect , we cannot give it the Name of Heat ; that being an Appellation , which is attributed to things with relation to our Senses . Thus when a Sound is so weak , as not to reach our Ears , tho' it may wave the Air , it cannot be called a Sound . And so to denominate any thing hot , it is requisite that there be such a motion of the Particles , as to affect the Nerves of our Hand , or some other part of our Body . Fluid Bodies therefore , consider'd in themselves , and without any respect to our Senses , may be called Hot , tho' not comparatively , that is , with reference to our Sense of Feeling ; except it should happen , that the Particles of our Hand , which is the ordinary Organ of Feeling , be more slowly moved than the Particles of the Body that is felt : As it happens , when with a hot Hand we touch a Body that is Luke-warm , which then feels cold to us ; and yet we shall feel the same Body hot , if we apply our other Hand that is cold . Water therefore absolutely consider'd , may be said to be hot , because it contains some heat in it self , and is capable of being more cold by many degrees , as when it begins to freez : But with regard to our Sense it is cold , because it excites no such Sensation as we call Heat , in our Organs . IX . The Nature of Cold consists in Rest . Having discover'd the Nature of Heat , we cannot be ignorant of that of Cold : For as Heat is the various agitation of the insensible parts of a Body ; so Cold is their Rest , or at least a diminution of their Motion . For we find by daily Experience , that Hot-water grows by so much the colder , as the Agitation of its parts ceaseth , till at last , by a total Cessation thereof , it be changed into Ice , which of all others is the most cold Body . Thus the things that are said to be cold , are endued with little or no Agitation , and consequently are not able to move our Senses , but rather moderate and put a stop to the motion of our Animal Spirits . Thus , as long as our Fingers are warm , we can do any thing with them ; but when once they are seiz'd with cold , they become useless to us in the performing of any work . X. Why hot things take up more place , than such as are cold . A Hot thing therefore differs from a Cold thing , as a thing that is at rest or less moved , differs from that which is moved , or more swiftly moved . Whence it is that those Bodies , whose Parts are agitated by heat , contrary to their Custom , cannot be comprehended in so small a space or room , as those which are at rest , or are less moved ; forasmuch as by means of this motion their small particles are rendred irregular , which therefore require more room , than when they are united , and are not separated by any agitation . XI . Cold is something that is Positive . Some suppose Cold to be nothing else , but a Privation of Heat ; but these seem not to have understood the Nature of Rest ; which is nothing else , but an abode in the same situation : Now Abode or Continuance , is something Positive , yea , more positive than motion it self . For that which is unchangeable , must without doubt more partake of the Nature of an Entity , than that which consists in continual Change and Vicissitude . Wherefore we must conclude , that Rest or Quiet is a positive thing , as having no less efficacy than Motion . For which of the two shall we reckon to be most positive ; that which keeps together and preserves other Bodies , or that which dissipates and destroys them ? Now it is the Property of Rest to preserve many things , that by Motion are spoil'd and damnified : Wherefore Rest ought to be look'd upon as being more positive than Motion . For who will assert , that to abide in a place , to continue in time , to rest in a Seat , or the like , which belong to Rest , to be less positive , than to take a Journey , to run a Race , or to be in a continual flowing , which belong to Motion ? Indeed it is an Error of our Mind , whereby we take Rest to be something Privative , and Motion to be Positive ; because we experience , that the one depends on our Will , whereas the other is scarcely taken notice of by us . XII . It is by Rest alone that Rivers are frozen , ●ea , the Sea it self , and that Living Creatures die . It seems strange to some , that by Rest only , which constitutes the Nature of Cold , Rivers and Seas should be frozen , and the Life of Animals should be destroy'd : And yet it is evident , that all this is done by Rest alone , not the least of Motion being to be found in any of these Effects . For what doth the freezing of Rivers and Seas import , but such a union and clinging together of their parts , whereby they do consist and are at rest ? For no stronger Argument can be alledg'd to prove , that any Bodies are joyn'd , than to say that they lye at rest together . XIII . The parts of Ice are at Rest , tho' the whole may be carried along by the stream of the River . For tho' a whole Body of Ice may be carried along the Water , yet its Parts notwithstanding are at Rest together ; for in case they were in agitation , then would they no longer constitute Ice , but Water ; as we find , that when the Frost breaks , the parts of the Ice that lay still together before , by being separated through motion , turn to Water . XIV . Cold , as it is a Rest of the Parts of a Body kills Living Creatures . That Cold is the Cause of the Death of Living Creatures , must not seem strange to us , seeing that our Bodily Life consists in the various agitation of the Blood , Spirits and Humours , upon the diminution or cessation whereof , Life it self must cease also . For as by too intense Cold , that is , by the consistence of the insensible Particles of the Air and Water , the Water that turns a Mill is congealed ; so the total cessation or diminution of the motion of the Blood and Spirits in the Bodies of Living Creatures , deprives them of Life . As we find , that in the Winter time , Flies and many other Living Creatures consume and dye , especially when the cold is very intense . XV. What Potential Heat a●d Cold is . As there is an Actual Heat and Cold found in Bodies , so some Bodies are said to be Potentially hot or cold . Those are called Potentially hot ▪ which have an aptitude or disposition to grow hot ▪ or heat other things ; which ariseth from hence , that their particles are so disposed , that they are liable to be more violently moved by the Subtil matter , which runs through all Bodies . Thus Quick-Lime , which is cold to the Touch , is said to be hot Potentially , because the Subtil matter can easily excite an Agitation in its Pores . In like manner all other Bodies , which can produce such a motion in the Particles of other Bodies , are said to be Potentially hot ; such as are Pepper , Ginger , Spirit of Wine , and the like . And on the contrary , that Body is said to be Potentially cold , whose Particles cannot be agitated by the Subtil matter ; or whose disposition of parts is such , as to hinder the particles of any Body to be put in agitation by others ; such as are Lettice , Vinegar , &c. CHAP. XXIII . Of the various Effects of Fire . I. Some Effects of Fire remain still to be explained . HAving hitherto consider'd the Nature of Fire , and how it diffuseth Light from it self through the Air , and communicates heat to those Bodies that are near it ; it remains now that we explain some other of its Effects , viz. how it rarefies and condenses some Bodies , softens and melts others , and again hardens and dries ; changeth some into Calx or Ashes , and others into Glass . In order to the giving of a Reason for these different Effects , we are to presuppose that Rule of the Philosophers ; that Every Action is received , not so much according to the manner and condition of the Agent , as according to the Disposition of the Patient . The Action of the Fire is every where one and the same ; but the difference of the Effect proceeds from the diversity of the Matter whereon it acts . II. How the Fire rarefies Bodies . In the First place therefore , if a Body , whose Parts are pretty close together , be very much heated , let those parts be of what figure they please , provided only that they be not Round , whilst they are whirl'd about their own Center , they cannot but meet with their Corners , and push one another , and then such a Body is said to be rarefied ; as appears in Milk , when it boils , as well as in other Liquors . The same may be often perceived in hard Bodies , which being heated , do lose few of their Particles by Exhalation . Thus Red-hot Iron is more turgid than that which is cold . III. How it condenseth them . But in case the Parts of a Body be very light , and very susceptible of Agitation , and yet have some slight Coherence ; yet so , as that they scarcely touch one another , and constitute a Whole , that is , of a very loose and incompact Substance , the least heat supervening to such Bodies as these , and communicating some motion to their parts , disposeth them to a nearer Conjunction , and by this means condenseth the whole Body : As when Heat reduceth Snow to a less bulk , by making the parts of it closer together . IV. How Bodies grow soft by the force of the Fire . The Fire softens Bodies , by agitating their Particles with so moderate a Motion , as doth only move them , without separating them from one another . Which happens only in those Bodies that consist of such parts , as are with equal facility separated from each other ; as in Wax , a hot Hand , Lead , and other such like , whose insensible parts are not wholly without motion , tho' the slowness of it make it imperceptible . V. How Bodies are melted by the Fire ▪ The Fire melts Bodies , whilst it not only moves their Particles , but also separates them from each other , as to their situation . For by the violent agitation of the Fire , the particles of Bodies are separated from one another , and most swiftly moved . And accordingly Metals , tho' otherwise hard Bodies , are by the force of Heat melted , and resolved into Homogeneal Particles , as they are usually called . VI. How Bodies by Fire are resolved into Vapour , and afterward turn to Water , or other Liquor . A like Effect of Fire is DISTILLATION , by means whereof a Body is changed first into Vapour , and afterward , as that Vapour condenseth , is turn'd to Liquor : Which may be done several ways , according to the several degrees of Fire , as by the moist Heat , as the Chymists call it , which is that of a Balneum , or by the dry heat of Ashes , Sand , or a naked Fire . And by this separation of parts , there are distill'd from Bodies first Burning Spirits ; then Phlegm or insipid Water ; and lastly , a sharp and corroding Liquor , which by a very violent Fire is distill'd from Salts . VII . How Bodies come to heat and boil , by means of Fire . But if the agitation of the Liquid particles be so great , that some of them be carried upwards , or be changed into Air or Fire , and so requiring a greater Space wherein to dilate themselves , and to pursue their motion , do thrust other Bodies out of their places ; then these Liquid Bodies become very hot and boil . Now this great Heat or effervescence is carried on with an equal motion , and without any great perturbation of their parts , when the said Liquid Bodies do not contain much Heterogeneous matter ; as it happens in Wine and pure Water . But they boil , where the Matter of Bodies is more Heterogeneous , partly spirituous and volatile , and partly thick and clammy , or ropy : These being the two Matters that concur to the making of Bubbles ; for viscous and clammy Matter , serves to make the Skins of the Bubbles , and the volatile Matter furnisheth that Aiery Spirit that fills and distends them . But if the agitation of the Heat be not strong enough to overcome the Heaviness of Bodies , then it cannot dilate those Bodies , so as to make them take up a greater Space . And therefore it is , that the particles of Metals do not fly up into the Air , because the force of Heaviness that is in them , surpasseth the Activity of the Fire . VIII . How it comes to pass , that the Fire hardens and dries some Bodies . As the Fire softens and melts some Bodies , so it hardens and dries others , viz. such as are compounded partly of thin , flexible , slippery and volatile Parts ; and partly of Thick and Branchy parts mix'd together , but not very firmly sticking to one another . For that Body is said to be dry , which wants those fluid Particles , which when united together do constitute Water , or any other Liquor . Such Bodies as these therefore , as soon as they come near the fire , their fluid and thin Particles being exhaled or turned into Vapour , become dry , and their thick and branchy Particles are left alone by themselves ; which being more nearly and closely joyned , and with greater firmness hanging together , do constitute hard Bodies . As is manifest in Clay , some of the pores whereof are by heat shut up , and others again dilated and left more open . IX . How Fire turns Bodies into a Calx and Ashes . Another Effect of Fire is , that it separates most Bodies either into a kind of Calx , or into Ashes , according to the various application thereof . For when those Bodies that are apt to melt , are so placed , as that a violent flame of Reverberation may beat upon them , they become turned into a Calx . For all Hard Bodies , which by the Action of Fire , are reduc'd to a powder , by expulsion of some of their thinner Particles , which joyned the other parts together , are said by the Chymists to be turned into a Calx . So that Calcination is an Operation , whereby a mix'd Body , especially Stones and Metals , are reduced into a small Powder . Neither is there any other difference between Ashes and a Calx , save that Ashes are the Remainders of those Bodies , whereof a great part hath already been consumed in the fire : Whereas a Calx is of those Bodies , which suffer little or no diminution at all by the Action of fire , as not being inflammable . And both of them agree in this , that they consist of solid and thick Parts , such as by the ordinary force of the fire cannot be changed into Vapours , and are of irregular and many Corner'd figures ; so that they only lye upon one another , without sticking close together , and probably do not touch one another , but in some very small Points . X. How these Calces , and the Ashes of Bodies are by Fire turn'd into Glass . If afterwards these Calces , or the Ashes , are committed to a strong and long continued Fire , their Corners or Angles , which are the cause of the Roughness and Opacity that is in Ashes , become bended , by which means the particles being agitated and tost together , are at last more closely joyned , polished , and made more smooth , which touching each other only , according to little Surfaces , do constitute that hard , transparent and brittle Body , which is commonly called Glass . XI . Why Glass is hard , stiff , transparent , and brittle . GLASS is a hard and stiff Body , because it consists of thick and inflexible particles , which are not joyn'd together by any intangling of the Branchy parts , but by contact only . It is Transparent , because after its concretion or coagulation it still retains its Pores , through which the Heavenly Globuli can continue their motion to Right Lines , according as they were moved before , when it was Liquid . Lastly , It is Brittle , because the Surfaces , in which its particles touch one another are very small . XII . How Earthquakes are caused by Fire . Fire not only exerts its Activity upon the Surface of the Earth , but also in the Cavities or Inward parts of it ; where it is the cause of EARTHQUAKES , as often as any great store of Exhalations are found there : Not that they of themselves are able to produce this effect , seeing their Particles do only constitute the Air ; but because they easily mingle themselves with the more Subtil particles of Spirits , and being heated and kindled by them , seek for a larger place wherein they may dilate themselves ; and being not able to find that , they shake all that stands in their way : Much in the same manner as Gan-powder , shut up in a Mine , as soon as it is kindled , by endeavouring to make room for it self , makes a great Concussion , making the Earth to quake . Which is the reason why those places are most subject to Earthquakes , which abound with Veins of Saltpeter , Brimstone , or other Oleaginous matters ; these being easily kindled by Spirits , or by any spark of Fire , from the dashing together of Stones or Flints . And as soon as they are kindled , not being able to contain themselves in the same Space , they are carried upward , and break through their Prison Walls , to make room for themselves . XIII . Subterraneous Fires act differently . EXHALATIONS , kindled in the Holes of the Earth , do break forth outwardly on the Surface of it , when they are of force enough to make a way for themselves thro' the outward Crust of the Earth ; but when they are not of strength enough to do this , they only cause a simple Earthquake , that is , they only make the Country round about to rise a little ; as Gun-powder raiseth the Terrassee that lead to the Mines . An Earthquake therefore is nothing else , but the Shaking of any Place or Country , which is accompanied sometimes with a breach of the Ground , and a terrible Noise . XIV . What Fermentation is , and the Cause of it . FERMENTATION is accounted amongst the Effects of Fire ; and happens , when the Matter of the first Element is so shut up in the narrow Pores of Earthly Bodies , that tho' many thick Particles swim in their little Spaces , yet are they so agitated by some Watry and Airy particles that are insensibly mix'd with them , as to be able to affect our Nerves , and produce the perception of Heat . Such a fervescence or rising is found in Dough , and in the working of New Wine , Beer , and other potulent Liquors : So likewise in Oil of Vitriol , mix'd with Salt of Tartar ; Aqua-fortis , in which Copper is put , and other such like . Because the Particles of these Bodies are so agitated by the Aethereal matter , that runs through their Pores , as not only thereby to be heated , but also rarefied and subtiliz'd ; so that the Hooks and Intanglements , whereby their Particles before were held and kept together , are dissolved . Fermentation therefore is nothing else , but the adventitious and expansive Motion of the insensible Heterogeneous parts of fermenting Bodies , excited without any sensible Cause . XV. Heterogeneous Particles are required to the Motion of Fermentation . Bodies subject to Fermentation are not of one kind ; for they may be either Animate , or without Life , Thin or Thick , Natural or Artificial , provided they do consist of Heterogeneous parts . Now this Heterogeneity of parts is found in those Bodies , which are compounded of Particles , whereof some are in continual motion , and others again are Earthly , thick , and more fix'd , which hinder the more Volatile parts from flying away . For on this contrariety and strife of the Parts fermentation chiefly depends ; for where the Particles are of the same figure and conformation , no fermentation can be excited . Thus we find , that New Beer , or Wine , when shut up in narrow Mouth'd Bottles do ferment or work with such Violence , that they often break the Bottles : Whereas if the parts of these Liquors be separated by distillation , they will no longer be capable of fermentation . For which Reason , Stillatitious Oils , burning Spirits , and distill'd Waters , will continue a vast while without the least change by fermentation . Thus Spirit of Wine , shut up in a Bottle , is very far from falling into a fret or effervescence ; but if you add some Oil of Turpentine to it , it excites such a commotion of the parts , as endangers the breaking of the Bottle , in case it be close stopt . CHAP. XXIV . Of the Mixtion of Bodies : As likewise of their Changes , Conversion , Generation , Corruption , Alteration , Augmentation and Diminution . I. There is a twofold Mixtion of Bodies . THAT it may be the better apprehended what Mixtion is , we are to observe that things may be mingled after a twofold manner ; the first way is , by a Composition or rather Apposition of the things to be mingled . The second by their Coalition or Confusion . II. What Apposition and Confusion is . Those Bodies are said to be mingled by Apposition , whose parts do not wholly mix and run through one another , but only superficially touch one another , keeping their distinct natures , as when Fruits of several sorts are heaped together , and make one heap . But the Mixtion by Coalition or Confusion of Bodies is , when they are so mingled ▪ as that they wholly run through one another , so that there is not the least particle assignable in the mixt Bodies , which doth not consist of every one of them . According as some think that the parts of Water pour'd into Wine , are so throughly mixed with the parts thereof , as to be susceptive of the same Action and Passion . This last kind of Mixtion ARISTOTLE seems to defend lib. 1. de Generat . cap. 10. where he asserts that a new substantial form is produced in Generation , and that there is no part of the mixt Body so small but is mixed . III. Aristotle's mistake about the Mixtion of Bodies . But this opinion of Aristotle is not at all probable , for if we should suppose the most perfect mixtion of all the most minute parts of a Body , this would destroy the very nature and notion of mixture ; since it is the common notion of mixture , that the things mixed must still continue ; for if they do not abide , then it is not a mixture of several things , but a destruction . Besides , if the parts of a Mixt Body , do wholly through and through pierce one another , so as to be coextended every way , then two Bodies will be in the same place , seeing there is no part so small that is not mixed , and that is not partaker of all the parts both in substance and quality . From hence also it will follow , that a small Body , by example a Pint of Water , will be equal and coextended to a far greater Body , viz. a Gallon of Wine , seeing that there is no part so small , which does not consist of Wine and Water . IV. The opinion of the Peripateticks concerning Mixture . Some Aristoteleans , to avoid these absurdities , tell us , that all Miscibles are not of the same Power and Virtue , and that the weaker do yeild to the stronger . So that when a drop of Water is cast into a Hogshead of Wine , it produceth no mixture , but that the form of the weaker part , viz. Water , is by the more powerful Wine , changed into its own nature , so that by the addition of this drop of Water , the Wine contained in the Hogshead is encreased one drop . V. The Peripateticks confuted . But this Evasion doth not agree with Reason ; for I will only demand of them , whether this drop of Water cast into the Hogshead be changed into Wine ? They will say it is . But if after this first drop , another and another he put in , and this continued , till the first quantity be 2 fold , 10 fold , 100 fold , 1000 fold encreased , what will be the kind or substance of this Liquor then ? The Peripateticks according to their Principles , must say that the whole Mass of this Liquor will be pure Wine , tho' instead of one Gallon of Wine , a 1000 of Water may have been pour'd into it drop by drop , since according to them , every drop of Water , by the overpowering quantity of Wine , was turned into Wine . But is not this absurd ? If they will not own this , let them tell us when the VVine began to lose its form ; and at what particular drop of VVater , the whole mass of VVater became deprived of its form . But here they must be silent , and tho' sore against their wills , acknowledge their Ignorance . VI. That Mixture is caused by Apposition . Wherefore rejecting this Sentence , we must adhere to the former , and maintain that the Mixtion of Bodies is performed by the apposition of particles to each other : Thus when VVine and VVater are mixed together , the parts of each Liquor continue in their distinct natures ; so as that the particles of VVine and VVater are not in the same , but in distinct places , as black and white Threads , in the Weaving of any Stuff or Cloath do each possess their distinct intervals . Neither must it seem contradictory to what we here assert , that the mixture of VVine and VVater , cannot be perceived by our Senses , because the particles of VVine and VVater are so small and subtil that they cannot be perceived by our Sight , nor distinguisht by our Tast . VII . Experiments proving Mixtion to be by Apposition . And certainly we have great reason to believe that Mixtion is performed after this manner , since we find that Bodies that are mixed may be separated again from each other . Thus VVine that is mixed with VVater may be separated from it , either by a Spunge dipt in Oyl , or by a Cup made of Ivy , or by extream Cold , which freezing the VVater , leaves the VVine , or at least the most Spirituous Part thereof in the center of the Icy mass unfrozen . And the same is almost perceived in every Body , wherein there is but a little quantity of Sulphur and Spirit ; for if you distil out of Vitriol , Tartar , Saltpeter and the like , their Phlegm and Acid Spirit , and after distillation , put them again to the remaining dregs , which the Chymists call their Caput Mort , you will find the same Body restored , which was before distillation , and almost of the same quantity or bigness as it was before . Chymists observe that when they mix the Spirit of Vitriol with the Salt of Tartar , there at first happens a great effervescence or ebullition , and when that is over , both the Liquor and Sult do quite lose their sharpness and acrimony , so that the Body remaining after this their effervescence , is a meer insipid Body : But if then by distillation you separate the Spirit of Vitriol from the Salt of Tartar , you 'l find that neither of them are deprived of their former virtue and force , but that they are as sharp and corrosive as before . All which Experiments do give us an undoubted evidence , that things after mixture retain the same nature they had before , and that Mixture is performed by Apposition of the Particles of one Body to those of another . VIII . What Mixture is , and how many several ways the same may be . Mixtion therefore or Mixture is nothing else but the Collection of divers Bodies into one , and that by way of Apposition . It may be performed divers ways . 1 st . By Percolation or straining ; thus Blood , Urin , Medicinal VVaters , Stones , almost all Juices , VVine , Oyl , &c. are made . 2 ly . By Coction or by Baking , thus Salt , Bricks , Earthen ware and Glass become one mixt Body . 3 ly . By Sublimation , thus Soot , Snot or Snivel , and , it may be Metals also , and some Salts used by Chymists are made . 4 ly . By Distillation , as many sorts of VVater , Rain , Dew , Manna , and other things are made . 5 ly . By Dissolution , thus Salt-water , the Chyle , or nutritive Juice , and dissolved or melted Bodies are made . 6 ly . By Exhalation , as Flame , Steams , Clouds and other such like . 7 ly . By Concretion or growing together , as Snow , Frost , Hail , the Stone in Mans Body , &c. 8 ly . By Calcination , as many sorts of Salts , Ashes , Quick-lime . 9 ly . By Simple Commix●ion , as Wine mingled with Water , Ointments . 10 ly . By Simple Expression , as Wine ; Oyl , and most other Juices . IX . The Changes of Natural things . Mutation or Change is the Vicissitude or Alteration of any thing , but chiefly of such as are bodily . The nature whereof we shall the better apprehend , by taking notice that all Changes are of two kinds , viz. Accidentary or Essential . An Accidentary Change is that whereby only some Accidents are changed , which do not constitute the essence of a thing , such as are the changes of Heating and Cooling . Essential Changes are those wherein the essences of things are changed by the Introduction of a New Form , and by depriving them of the Form they had before . And forasmuch as according to what hath been said in our General Physicks , there are in the usual sense of the Peripateticks no substantial Forms , besides the Soul of Man , it follows that neither can there be in their meaning any substantial change , save that in the production of man , because in no other production , any such new substance , as they understand , is made ; but in all Alterations and Generations the matter or common subject is only Accidentally or Essentially modified according to Measure or Quantity , Rest , Motion , Position and Figure . X. What Conversion is . To be more particular , Conversion is that Action , whereby one thing is changed into another , by the Alteration of its former Modification , and the introduction of another , diverse from the former , the same common subject still remaining . It is said that the same Common Subject remains : For the Matter which is the Subject , is numerically the same after the Change , as it was before , being only Modified anew . And this is well to be observed , because that otherwise it will not be any true Conversion or Change of one thing into another , but rather an Exchange of one thing for another . XI . The difference between an Accidental , Essential and Substantial Conversion . That Action , which is terminated in those Modes or Accidents that may be present or absent without the destruction of the Subject , is called an Accidental Conversion . But that which is terminated in that peculiar Modification , which is Essential to any thing , and doth distinguish it from all others , the same is called an Essential Conversion , and sometimes Substantial , inasmuch as it affects the very substance or subject it self , so and so modified . For indeed by the substance of any thing we are not to understand that bare Entity , which is conceived to be the Subject of the Form , and to be specificated by it , but both Subject and Form taken together , to wit , that Thing which consists of them both , or rather the Subject , as I said , it self , as considered with its peculiar Modification : So that when this Constitution or Modification is changed , and another introduced into the common Subject , it is evident that then the former substance is also changed , and turned into another . Thus when that peculiar modification , which constitutes the nature of Wood , is changed , and the Essential disposition that constitutes a Stone is introduced , in this case we must say that the Wood is essentially and ●●bstantially changed into a Stone . And so likewi●● in the case of Nutrition , when Corn is reduced to Flower , that to Bread , and the Bread into the Blood and Flesh of our Bodies , this I say is an Essential and Substantial Conversion . XII . What 〈◊〉 i● . So likewise Generation is nothing else but a certain disposition of matter according to the foresaid Modifications of Measure , &c. as in the Production of PLANTS and BEASTS ; because in the generation of either of these , a new substance is no more produced , than in the framing of a Statue , or the building of a House . Now what happens to Stone or Wood when it is framed into a Statue , more than a new form or habitude in the matter of Wood or Stone ? So likewise in the building of a House , there is no other change but what ariseth from the joining of Stones , Boards , Tiles , Nails , &c. which before were separate , but now being set together make such a composure or structure as hath the form of a House . And tho' the framing of a Statue , and the building of a House do terminate in a Substance , for both the Statue and House are Substances , yet no new Substance other than I have before asserted , is found in either of them , there being nothing superadded to them besides a new Modification , with which both these Substances are affected . Accordingly , Generation is nothing else but a translation or new ranging of the parts of matter , which is alike in Natural and Artificial Compositions . XIII . What Corruption is . As for Corruption , it is nothing else but the dissolution of parts that were before united . Thus as a House is said to be destroyed when its several parts are separated from each other ; so Wood or other combustible matter is said to be corrupted or destroyed , when by Flame it is resolved into Ashes and Smoak . The Cause of the Corruption of Bodies is when strange particles , by thrusting themselves into their pores , do thereby change and destroy the Texture , Connexion and order of their Parts . Hence it is that those Bodies that have less pores , are for the most part more durable than others , and less subject to Corruption or Destruction . XIV . What Alteration is . Alteration is nothing else but the change , whereby a subject , still abiding the same , becomes changed as to some Accidents . So Water is said to be altered , when it is heated by the Sun or Fire : and a Man is said to be altered , when of Healthful , he becomes Sick , and of Ignorant , Learned , &c. Because Man , by supervening Sickness or Learning is not changed into another thing than he was before . And therefore Aristotle in the 1 st . Book of Generation chap. 4. defines Alteration to be that whereby a sensible subject , abiding still the same , becomes changed in its affections . Book . 1. Part. 7. Introduction . G. Freman . Inv. I. Kip Sculp . To the Right Hon ble : Francis , Viscount Newport of Bradford , Lord Leivtenant of Shropshire , Treasurer of their Majesties Household , and one of the Lords of their Majesties most Honourable Privy Councell &c. a This Plate is humble Dedicated by Richard Blome . XVI . What Diminution is . The Diminution or Decrease of Bodies , is when this Nutrition ceaseth , and when less Substance is restored than has been dissipated or lost . The Cause of Diminution is , either the want of Food , or when the Food is not such as is proper to feed the Body ; or because of the weakness of the Innate Heat , as happens in those that are Old ; or because the said Heat is too strong , as in those who are of a Cholerick Temperament ; or when the Body is so disposed , that it cannot be supplied with sufficient Food : Or lastly , when the little constitutive parts of the Body begin to waste and are consumed , whatsoever may be the cause of it ; for then the Musculous Parts fall down , and grow Flaggy for want of a sufficient accession of new Substance , caused by a too sparing supply of Food , or because the same is not fitly prepared or concocted . Whence we understand that Augmentation or Growth , and Diminution do consist in Local Motion . The Seventh Part OF THE INSTITUTION OF PHILOSOPHY . OF LIVING CREATURES In General : And Specially of PLANTS and ANIMALS . The INTRODUCTION . Of the Division of Living Creatures . I. The Division of Bodies into such as are living and destitute of Life . HItherto we have considered the Nature of Inanimate Bodies , whether hid in the Bowels of the Earth , or exposed in the Face of the Heavens . And now we proceed to Living Bodies , viz. Plants and Animals , which are comprehended under this General Notion , because they are endued with Life , and are furnisht with Instruments appropriated to Nutrition , Growth and Propagation . For all Bodies in the Universe are either Living or devoid of Life . Amongst those that are without Life are reckoned the Heaven , the Stars , Fire , Air , Water , Earth , Metals , Stones and Fossils or things dug out of the Earth : So that of all the Creatures contained in the World , Plants and Animals only are endued with Life . II. What Living Bodies are . Now we call those Living Bodies , that have received from the Author of Nature such a Disposition of an Organical Body , as that by innumerable passages and conveyances it hath , the Alimentary juice , being by motion thrust into them , is by the Soul every way dispersed and distributed , for their Nourishment , Growth and Conservation . They are called Living Bodies from the Life they possess , and Animate Bodies from their Soul. III. What the Vegetative Soul is . This Soul , a fit Disposition of Parts being first supposed , chiefly consists in the Innate or Inbornheat , which is a Heating , but not a Shining Fire , generated in Bodies at their first Production , by means whereof the Alimentary Juice , for their conservation , is duly prepared , and distributed throughout the whole Body , and joined to the several parts of it , for a supply of that which daily wastes away , by which means Vegetation , that is , Nourishment or Nutrition , and Encrease or Growth are performed . And therefore this Soul is called Vegetative . IV. Why a Body is said to live and die . The Life flows from this Soul. For if the Heat be preserved and maintained by convenient Moisture , as its proper Food , then that Body is said to Live ; and on the contrary to Die or Perish , when Cold and Driness do so predominate in it , as that the Inborn Heat becomes thereby diminished or quite taken away . V. There are two General Heads of Living Bodies , Plants and Animals . Now forasmuch as PLANTS and ANIMALS do both of them enjoy the common degree of Life , and resort under Vegetable as under their Immediate Genus or General Head , we must first consider their Affections , and whatsoever doth in general belong to them ; as for Example , wherein chiefly the Nature of Living Bodies doth consist ; how such as are Vegetable differ from those that are devoid of Vegetation ; what that Heat is whereby they are Cherished and Live , and whence their difference is deriv'd . For there are two General Heads of Living Bodies ; the First whereof are those , which according to their outward and inward shape exhibit a substance equally extended ; and wherein from the top to the bottom we perceive but one and the same progress of Nature ; so that all their parts are nourished , grow and are generated , without any distinction in their operations ; their Bodies being as so many Channels and Pipes through which the Food is transmitted , and in which it undergoes several changes . And these are called PLANTS , which draw up an Alimentary Juice out of the Earth by their Roots into the Stem or Stalk , which from thence is conveighed and sublim'd to all the utmost parts . VI. The Definion of a Plant. A PLANT therefore is a Living Body furnisht with a Skin , Strings , Root , Stalk or Stem , and other Organical Parts , and is nourisht , grows and produceth its like from prolifick Seed , only by means of a Vegetative Soul. So that all these Plants which spring out of the Earth , or grow in standing Pools or Water , or elsewhere , provided they grow and are nourished , whether they have Roots or not , whether they have Leaves or not , whether they have Flowers and Fruit , or have only a Root , all these , I say , are called Plants . VII . Plants are divided into Trees and Herbs . But forasmuch as the name of Plant doth not only belong to those Bodies which grow out of the ground by their Roots ; but also to all those that grow upon other Plants , or that spring out of the ground some other way ; therefore Plants by a general division may be distinguished into TREES and HERBS , as the two members that comprehend all Plants . A Tree is a Plant rising out of the ground with a woody Stem or Stalk , and growing up to considerable Height . An Herb is a Plant consisting of Leaves and a tender Stalk , never rising to the tallness or thickness of Trees . Some Authors , besides these 2 members , place a SHRUB as a third thing between a Tree and an Herb , but , as it seems , without any necessity , forasmuch as there be no Plants but may be conveniently reduced either to Trees or Herbs ; a Shrub being nothing else , but a Tree , which rising out of the Earth , variously spreads it self into Branches and Leaves from the Root . For a Shrub riseth higher from the ground than an Herb doth . As to Mushrooms , &c. they may be reckon'd amongst those Plants , that grow upon other Plants or spring forth at their Roots . To which also may be referred some Plants , which do not spring out of the Earth , but from other Plants , such as are those small Strings that grow upon Pulse , and being intangled with them are carried upwards into the Air. As for Moss it may be well called an Excrementitious Plant , because from its original Seed it grows upon barren Ground , and Stones it self , in which it s spreads its Roots . VIII . The Division of Trees into Wild and Domestick . Trees are commonly divided into Wild and Domestick , or such as are cultivated at home , and those that are Outlandish : Not but that all Trees as to their first original may be called Wild , as having grown first wild in the Fields : but because there are many Trees , which men do not take the pains to Transplant and Cultivate in their Gardens , and if they should , yet would not they thereby change their wild Nature , whereas others being Transplanted and Cultivated by the industry of men , are much improved thereby . IX . The Second General Head of Living Creatures are those we call Animals . The Second General Head of Living Bodies are such as consist of a far greater variety and multiplicity of Parts , have peculiar motions , and seem to constitute many whole Bodies , which yet are joined together with that proportion , as to produce proper and necessary motions ; so that from these different Parts , certain Machines or Engines do arise , most curiously wrought and contrived , which are called Animals , whose members are not only complete in themselves , but are also joined with that exact Symmetry and Proportion , as to conspire to the Good and Profit of the Whole , and concur to one motion . And notwithstanding that in the Praedicamental Line , and the Genealogy of Things and Modes , an Animal is , according to the common way of Philisophizing , constituted by something Sensitive , which is true too , in a certain meaning ; yet we are to take heed that we do not by these means attribute to an Animal such a Soul and Sense , as has Perception ; since the Sense of an Animal purely and alone consists in the impression of the Object on the Bodily Organ , which may be done without the Help of a Soul. X. The various kinds . Animals . Animals are divided into such as flie in the Air , swim in the Water , go on the Earth , creep , slide along , or such as are altogether immoveable . They may likewise be distinguisht from the difference of their Generation , Parts , Actions and other such like . And accordingly some are Viviparous , such as bring forth Living Creatures ; others Oviparous , which lay Eggs , out of which Animals afterwards are hatched . As to Parts , some have Wings , others Fins , some go on two Feet , others on four or more . And others again want all these . As to their Actions or Manners , some are Tame , others Wild ; some Domestick and Sociable , others delighting in Solitude ; some Stupid and Dull , others Quick and Cunning. As to the places where they are bred and live , some are Fiery , others Aquatick or Watry , and others Terrestrial . Some live both on the Earth and in the Water , which are therefore called Amphibious ; some are Subterraneous , or living under Ground , &c. XI . The Sum and Order of things to be treated of in this Seventh Part. The most Noble and Excellent of all Living Creatures is MAN , for the handling of whom we design the Eighth Part of our Institution , as being the Complement of all Animals , and to express my self , as some of the Ancients have done , the Horizon of Heavenly and Sublunary Creatures . Now forasmuch as these Living Things do agree in some affections , we will here first touch upon those , which are common unto them all ; and then in special apply our selves to the Contemplation of Plants and Animals , and shall at large set forth the distinction that is between them . CHAP. I. How Living Bodies differ from those that are Inanimate , and destitute of Life . I. The word Life is taken in a threefold signification . IT appears from what hath been already said , that Living Bodies differ from Lifeless things in this , that the one have Life , and the other are devoid of it . But forasmuch as the word LIFE is Aequivocal , and attributed to things that are said to Live under different Notions ; we must first consider what Life is , and how many significations it admits of . For the Notion of Life is very various and vagrant , but reducible to 3 General Heads . Sometimes we make use of this word to signifie Simple Existence ; sometimes , Active Existence ; and sometimes also , Coexistence , or the Duration of one thing with another . II. What a Life of Simple Exstence is . That is a Life of Simple Existence , when the word to Live is taken simply for Existence : As when BOETHIUS defines Eternity , an All at once and perfect Possession of an Interminable Life . And in the same meaning ARISTOTLE calls the Life of Animals , their Being ; because when they die , and cease to live , he thought they ceased to be also . III. What an Active , or Actuous Life is . An Actuous Life , is a Life of Existence , accompanied with Action ; and in this Sense Life is taken for Action and Operation . Thus Fire , or a Candle , whilst it sends forth a flame is said to live ; and so the Vital Spirits are said , to live in a Body , as long as they are in continual motion , and flow through the Veins and other hidden Channels . Thus we call Spring-water , Living , because it bubbles up , and flows continually ; but Dead , when it stands still , and is without motion . In like manner , Love is said to be alive , whilst it is strong and active . So Virgil , in 1 st Aeneid : — with Lively Love Strives to fore-stall . IV. What the Life of Existence with another is . The Life of Existence with another is , when Life is taken for the Duration of one thing with another ; or for the Duration of some Substance , in conjunction with some Accident , whereby it is perfected . Thus the Life of Man is commonly said , to consist in the Conjunction of Soul and Body , and his Death in their Separation : As when CATULLUS saith , Let 's Live my Lesbia : Where , by the word Live , he understands Existence in conjunction with Joy and Pleasure . So that Life taken in this Sense , consists in the union of two Substances ; or in the union of a Substance with some Accident , from which it borrows some kind of Perfection . V. Of the difference that is between Living and Lifeless things . Living things are chiefly distinguish'd from Lifeless things , by the Life of actuous Existence , or because they are endowed with a certain Efficacy and Activity : For their Life properly consists in motion , which the Purest part of the Blood , if they be Animals , or of the Alimentary Juice , if they be Plants , communicates to the grosser parts of their Bodies : So that we find that Plants and Animals do soon perish , when the Blood by its Circulation ceaseth to quicken the Members , and when the Juice does no more enter through the Pores . For as Bodily Life consists in Motion , so Death consists in Rest or ceasing from Action . But for all this , we must not suppose , that there are any Immaterial Souls in Living Bodies , that perform these motions , and the Functions of Feeding and Growth ; it being sufficient that their Parts be so disposed , as that the prepared Alimentary Juice may freely enter into their Inward parts , and by its apposition , restore and supply their dissipated Substance . Now all this may be done by Motion alone , provided only that the Parts be rightly disposed , and that there be an equal distribution of the Juice by means of Heat . I say therefore , that Living Bodies differ from Lifeless things , in that the former , by reason of the want of Organs , cannot admit such a distribution of Aliment , for the Restoration and supply of what is lost . VI. By what force or virtue the Alimentary Juice is distributed through the Pores of Living things . If so be any one demands , by what Force or Activity this Juice is diffused through the pores and passages of the Body , to all its parts , so as that they grow not only in length , but also in breadth and depth ? I Answer , That this is done by means of Heat , proceeding either from the Sun , or from Fire . For such is the Efficacy of the Heavenly matter , that is , of the first and second Element , that by passing through the thicker Particles of the third Element , it doth agitate them , and in so doing doth produce or excite heat in them ; by which means these particles being rarefied , are carried upwards through the Pores of the Roots , to the Stalk or Trunk , and all other parts . Besides , there is in all Living Bodies a certain Inborn or Native heat , or rather a fire that is hot only , without Light ; by the assistance whereof the Alimentary Juice is distributed through the whole Body , and joyning it self to it , doth preserve , enlarge and perfect it . VII . Lifeless Bodies are not subject to any certain figure , as Living Bodies are . Living Bodies also differ from such as are Lifeless or Inanimate ; because these latter are not determin'd to any certain figure . Thus Stones may subsist under any figure : Some are 6 Corner'd , as CRYSTAL ; some have a crooked Surface , as FLINTS ; some have a plain surface , like a Plate , as TALCK ; some have the figure of a Lozenge or Quarry of Glass . So likewise Metals , and all other things dug out of the Ground , do not require any One precise figure . But Plants and Animals cannot admit this variety of figures , as requiring a certain and determinate Conformation . For a Plant cannot be of any figure , but must have such a one , as is necessary for the drawing , concocting , digesting , and distributing of its Aliment . And 't is for this Reason , that Living things only are furnish'd with Organical Bodies , which consist of such Instruments , as are proper to perform the several Functions of Life ; such as are the Root , the Stem or Stalk , the Branches , the young Shoots in Plants ; and the Feet , Belly , Head , Bones , &c. in Animals . Wherefore also a greater Beauty is found in the Bodies of Living things , than in Artificial ; for since Beauty consists in Variety , it is evident that in Living Bodies there is a much greater diversity of Parts , than in others , whose parts are not so numerous , nor so fine and curious , nor so exactly and neatly joyn'd together . VIII . Artificial Bodies are not capable of Growth and N●ument . Altho' in an Artificial Engin , or Machin , as likewise in a dead Carkass , or a wither'd Plant , there be many such like Organs , as are found in Living Bodies ; according to what Historians relate of that Wooden Eagle , made by REGIOMONTANUS , which did fly in the Air , and shewed the way to the Emperour , as he was going to Nurenberg ; and of the Wooden Venus , made by DAEDALUS , which could walk by the Artificial putting of Quicksilver into the Inward parts of it : Yet for all this , Living Bodies are very distinguishable from such Artificial or Dead Bodies ; because they are nourished and grow , by the Alimentary Juice admitted into their Pores ; whereas Artificial and Dead things are neither capable of Growth nor Nourishment . IX . Living Bodies are productive of their like . Lastly , Herein also are Plants and Animals differenced from Metals , and other Dead Bodies , in that they can produce their like , and preserve their kind by a successive propagation of Individuals ; which things dug out of the Earth are not capable of , as being destitute of Seed , or any Virtue whereby to generate an Off-spring . CHAP. II. The Life of Bodily things consists in Moisture and Heat . I. Living Bodies stand in need of Heat and Moisture . FOrasmuch as such is the Constitution of Living Bodies , that they consist of several fibres or small threds , between which lye many large Conduits or Passages , through which the Alimentary Juice is strained , and diffused into all parts ; it cannot be question'd , but the Life of Plants and Animals is supported by 2 things , viz. Heat and Moisture , which mutually stand in need of , and assist each other . For Moisture is the food of the Heat : And accordingly Physicians tell us , that Life consists in Moisture , as its Passive ; and in Heat , as its Active Quality ; and that all Vegetative Bodies do subsist and are preserved by the same . II. The Fire that is in Living Bodies is Hot only . But to remove all Difficulty that might arise from the word Heat ; we are to take notice , that we do not speak here of a perfect Fire , which is both hot and bright , but of that which is hot only ; such as is found in Horse-dung , and putrifying Hay : Which is therefore distinguish'd from the Coelestial fire in the Sun , and from the Elementary , which burns upon our Hearths ; because it doth not consist as those fires do , of Particles that swim in the first Element , and are tost with a vehement Motion within themselves ; but proceeds from a kind of fermentation , caused by a mixture of Heterogeneous little Bodies . Tho' indeed , if we well mind its Operations , we shall find it to differ from the 2 former fires , Solar and Culinary , rather in degrees , than in nature and essence . III. There is a twofold Temperament in Living Bodies . The one according to Justice . But forasmuch as Fire is very Active , and cannot long be preserved without food , we find that Moisture is of absolute necessity required for its preservation and support . From hence ariseth the Temperament of Living Bodies , when Heat and Cold , Moisture and Drought , are so temper'd and proportioned , that none of these Qualities hinder each other , but with an agreeing Discord harmonize together . And this kind of Temperament is by Physicians called , a Temperament according to Justice , when these Qualities are so mixed , that the Heat in Living Bodies is qualified by Cold , and the Moisture by Drought , according to the requirings of each particular Nature . Because the same Temperament is not always found in Living things , but is changed according to the variety of Ages , or the several Stages of Life . For in Animals , to every different Age , a different Temperament is appropriated ; to Childhood , a hot and moist Temperament ; to Youth , hot and dry ; to Manly Age , cold and moist ; to Old Age , cold and dry Complexion . And these Temperaments are therefore said to be according to Justice , because they of Property and Justice belong to such and such Ages . IV. The other according to Weight . To this Temperament another is opposed , which is called a Temperament according to Weight , wherein all the Qualities are in an Equal poise ; so as Heat doth not exceed Cold , nor Cold , Heat : Moisture doth not exceed Drought , nor Drought , Moisture ; but are altogether equal in degrees . But it does not seem probable , that any Body is possest of such a Temperament , neither is there any Cause assignable that might thus temper and poise these Qualities ; and therefore this is a Temperament in Notion only , as GALEN saith , and not Real . V. The increase of Living things , is from Heat . Forasmuch therefore as Heat and Moisture are required to a due Vegetation of Living Bodies , it happens , that according to the Exuperance of either of these Qualities , a more abundant production of Living things is occasioned . Thus in Summer time , when Heat bears sway , abundance of Magots breed in Flesh , Bees in the Carkass of an Heifer , Humming-Bees or Drones in that of an Ass , Hornets in that of a Mule , and Wasps in the Carkass of an Horse : It is in the same Season also , that Dead Flies recover Life . And accordingly it will not be difficult to give a Reason , why Spices grow only in Hot Countries , because they stand in need of a great degree of Heat before they can arrive to that Purity , by a separation of the Heterogeneous particles , that so the Homogeneous may come together , and constitute those Odoriferous Bodies . And therefore , as my Lord VERULAM tells us , Trees planted on a hot-Bank , and exposed to the South and South-East , do bud sooner than others , and bring forth more early fruit . And the same he saith of Trees planted near the Wall of a Chimney , wherein continual fires are kept ; and that it is good for the same purpose , to let the Branches of Trees spread into those places where frequent fires are used . Of which we have a pregnant Instance in Vines , which according as they are more advantagiously situated , do by a whole Months time , sooner than others , bear Ripe Grapes . VI. Dung , by its Heat , doth hasten the springing of Plants , and makes the Ground fruitful . It is for this very Reason , that Country-men do Dung their Grounds ; not only because the Dung doth fatten the Earth , whereby more plentiful Nourishment is conveigh'd to Plants ; but also because by its warmth it comforts and refresheth the Ground , which was weak and languishing by reason of cold . For the Dung of Animals is Salt , and contains an Inward heat . And accordingly we find , that those who desire to hasten the springing and growing of their Plants , do take care very well to Dung their Gardens and Plots of Ground , before they sow their Seed . To this end also they pour stale Urine at the Roots of Vines , to make them more fruitful . VII . How Moisture is a cause of the increase of Living things . As store of Heat doth conduce to the great increase of Plants and Fruits , so much Moisture also is a great help to the multiplication of them , when accompanied with convenient heat and warmth . Thus we find , that in Moist places Grass grows thicker , and riseth to a greater height , than in Dry Grounds . In like manner we see , that Herbs will grow in Glass Vials , fill'd only with Water . We find also , that the Hair of Young-men and Children grows much faster and thicker , because Moisture abounds in them : And Trees and Plants , that are much water'd , do thereby thrive the more ; for by frequent watring , the Dryness of the Soil is temper'd , and the Roots are softned , and thereby made more fit to suck the Juice out of the Ground , and to send it up to the utmost Branches . So the fittest time for the watering of Plants , is the Evening ; because the Cool of the Night following , gives the Moisture leave to sink down to the Roots , and refresh them . VIII . Mouldiness proceeds from Moisture . How greatly Moisture conduceth to Germination , may be gather'd from Moss , which delights in moist places , and grows even upon those Rocks and Stones that are continually water'd with Springs . Hence it is also , that Bread that is kept in a moist Cellar grows Mouldy , and many other things that are laid up in moist places . IX . Heat , when excessive , is hurtful to Living things . As an equal Temperature of Heat and Moisture , is the Cause of the great increase and multiplication of Living things ; so the Excess of either , and more especially of Heat , is hurtful to them , and hinders them from arriving to their due growth . Thus we see that Bodies , wherein the inborn heat predominates , are of a low stature , because it consumes the Moisture too fast , not suffering it to spread and diffuse it self ; and so also such Persons , in whom Heat abounds , are commonly lean : Whereas on the contrary , those in whom this innate Heat is weaker , and allay'd with Moisture , are apt to grow fat , and spread in bulk ; as is evident in Women , who commonly are more Plump and Fat than Men , except Sickness , or any Praeternatural Cause hinder the Effect . CHAP. III. The Death of Living things proceeds from contrary Principles , viz. from Cold and Driness . I. Wherein the Death of Living things doth consist . FOrasmuch as contrary Effects proceed from contrary Causes , we may easily conclude , That the Death of Living Creatures are owing to Cold and Driness . For as the Bodily Life consists in the due Temperature of Heat and Moisture ; so Death happens to them through the predominance of Cold and Drought , whereby the Vital Principle of inborn Heat , becomes weakned and destroyed . Bodily Life , as hath been said , consists in continual Motion ; wherefore when any Cause happens to fore-slow , or put a stop to this Motion , Life must cease also . Now , since nothing is more opposite to Motion , than Rest , wherein the Nature of Cold doth consist , it cannot be question'd , but that where Cold prevails , Death must enter . Thus we see Flies dye at the approach of Winter ; and that Frogs , tho' they live in the Water , and are in a great measure habituated to Cold , yet perish in Frosty-weather . For as great Cold doth congeal the Waters , and hinder their Motion ; so the overslow agitation of the Spirits and Humors in the Body of Man , is hurtful to the Life of the Body ; and where it is of long Continuance , quite destroys the same . And in like manner also , excessive Cold causeth the dying of Plants and Trees . II. Cold drieth as well as Heat . For tho' Heat and Cold be contrary Qualities , yet do they by opposite ways produce the same Effect , viz. Drought . For we find that Clay is dried by hard Frost , as well as by great Heat in Summer : The Reason whereof is , because all liquid and moist Bodies , lose the agitation of their Particles , by Cold ▪ and by this means become hard and dry : And therefore it is no wonder , if Clay , which is nothing else but a Mixture of Water and Earth , should grow hard and dry , because the Water which softned it , is by the cold congealed . Seeing therefore that cold works the same effect in Plants , it cannot seem strange to us if Plants perish , when the Juice wherewith they were nourished , is frozen . It has been of Old told us , that extream Cold scorcheth and burns up Plants , by congealing and drying up their Moisture and Alimentary Juice . III. Why the Leaves of most Plants fall in Autumn . Hence also it is , that in Cold Countries the Leaves begin to fall from the Trees towards the latter end of Autumn ; because about that time , the pores of Plants are shut up at the approach of Cold , and the Passages along which the Juice is conveyed , are dried up and contracted . IV. Heat is hurtful to the Aliment of Living Creatures . And as Cold produceth these Effects in Living Bodies , so doth excessive Heat also ; for Heat exhausts the Spirits and Humours , and attenuates and wastes the Bodies in which it doth predominate . For as a Mill , without the assistance of Wind or Water , stands still without any motion at all ; so Plants , upon the consumption of their Alimentary Juice , perish ; and Animals , when their Spirits and Humours are weakned by extream Heat , languish and are slowly moved . Whence it comes to pass , that when great Heats happen in Hot Countries , at the time when the Ears of Corn begin to break forth , they are stopped in their coming forth ; because the Moisture being by the heat dissipated into the Air , the Heat finds nothing to feed upon , or whereby to maintain it self . V. When the Death of Living Creatures happens . The Death therefore of Living Bodies happens , when Moisture , which is the food and fewel of Heat , is wasted ; or when Heat is separated from , and leaves the Moisture , which then ceaseth to be agitated , and distributed to all parts of the Living Body . For as Flesh laid before a slow fire , is roasted , and by exhaling of the greatest part of its moisture becomes quite dried up ; so the Temperament of Living Bodies becomes spoiled , when the Spirits and Humours are alter'd and wasted by excess of Heat . Thus Fruits are frequently spoil'd by over-much heat , which scorching their outside , leaves their inward substance raw and unripe ; as it happens to Grapes and other Fruits , whose outside is often scorched with that heat , which scarcely toucheth their Inward parts : As Bread put into an Oven that is over-heated , hath its Crust burnt up and scorched , whilst the midst of it wants baking , and is doughy . VI. How Fishes are dried up in the Water . But you 'l say , If Driness be the Cause of Death , how can Fishes that live in the Water , ever arrive to that degree of Drought , which may cause their perishing or death ? I answer , That the Water in which the Fishes swim , cannot hinder the wasting and drying up of their Natural moisture : As we find that Flesh , which is suffer'd to boil in a Pot full of Water , till all the Natural moisture be consumed , becomes harder than that which is roasted . Yea , we find also that some sorts of Wood , that have lain long in the Water , are found drier and lighter when they are taken out , than when they were put in . VII . Excess of Heat is an Enemy to all Bodies . Neither is excessive Heat only an Enemy to Living Bodies , but even to all in general : Thus we find that when the flame of a Candle or Torch is increased , it doth so much the sooner consume and waste the Body that serves it for fewel ; and by a parity of Reason , when the Heat either outward or inward exceeds , it procures the Death of Living Bodies : As we find that Plants wither by excessive heat ; and that Men , by indulging themselves in the drinking of hot Liquors , do hasten their own Death . VIII . Death sometimes is caused by the want of Food . Sometimes Death happens to Living Bodies by defect of Food convenient ; as when Nature ceaseth to furnish them with Matter , whereby they might grow and be nourished : For so in Plants , tho' it may be there wants no Moisture for the Heat to act upon , and tho' the Sun have force enough in Summer time , to draw up the Juice out of the Earth ; yet is not that Fervescence , or Fermentation of the Alimentary Juice , which is requisite to their Vegetation , always performed alike ; for it requires a certain and determinate Season of the Year , which being once past , it cannot afterwards be expected . An Example whereof we see in Quick-Lime , which upon the affusion of Water causeth an Effervescence ; but that being once ceased , it cannot be renewed again , tho' you should pour never so much water upon it . And for this cause it is that ripe Fruits ; as Apples , Pears , Plums , &c. do fall down to the Ground , as soon as their Stalk , whereby they were joyned to the Tree , begin to want aliment , and those fibres that held them fast are dried up . And the same is the Reason , why all other Fruits and Grains fall out of their Husks and Pods . IX . The Destruction of Bodies , is sometimes caused by a too great opening of the Pores . And much like Effects do sometimes proceed from the too great relaxation and opening of the Pores of Bodies : For thereupon the Bodies contained in those Intervals must needs fall down , except that by some means or other their bulk be coextended to the amplitude of the pores wherein they are . Thus , when in the Summer Season the pores of the Skin are more open , the Hides of flay'd Beasts , have the Hairs more easily pluck'd off . Thus likewise it seems probable , that the falling out of the Teeth of Children , is caused by the dilatation of the Sockets of the Jaw-bone , wherein the Teeth are fixed ; for they growing wider , as the Child advanceth in bigness , they can no longer keep the Teeth steady . But in Old People this falling out of Teeth is caused by the defect of Aliment and Moisture ; because the fibres , through which the Aliment was used to be convey'd to them , grow dry and are contracted . CHAP. IV. What is the Cause of that Hardness , which is observ'd on the outside of living Bodies . I. Whence the Hardness of the Surface of Living Bodies doth proceed . THe Hardness of Bodies consists chiefly in this , that they resist the Touch , and that their parts are not easily separable from each other . And forasmuch as this Resistance to the Touch is perceiv'd on the outside of Living Bodies ; it will be worth our enquiry , What might be the Cause of it , that when their Inward substance is so soft , their outside should be hard . Whereof no other Cause seems assignable , but this , That the Outward parts of Living Bodies , are expos'd to the continual impulse of other Bodies . For it is certain , that the Heavenly matter ( under which Name we do not only comprehend the Matter of the first and second Element , but also the Air , with the Particles of the third Element that are mix'd with it ) carries the Earth round ; and forasmuch as all these Small Bodies cannot pass through the Earth , or any of the Bodies which belong to it , it cannot be otherwise , but that vast numbers of them must dash against Living Bodies , and by their continual beating upon them , render them hard . For by this impulse , their Outward parts are driven closer together , and so become more Compact and Hard. II. Wherein the Hardness of any Bodies doth consist . For to speak properly , the Hardness of Bodies is nothing else , but the Rest of many Essential or Integral parts , caused by the Pression of the Air , or of the Subtil matter ; which acting only on the outside , doth so much drive those Particles inwards , that they can no more be separated , without a perception of some Resistance . For tho' the Subtil matter doth penetrate all Bodies ; yet we are to consider , that the Parts of many Bodies are so great and irregular , that they are able to resist its Action and continue at Rest , and by this means constitute Hard Bodies ; because they resist or oppose their being divided , and are outwardly so comprest by the Air and the Subtil matter , that it is oftentimes more easie to move them altogether , than to separate them from one another . III. Whence the Covers of some Living Bodies do proceed . This is the Cause of those Coverings , which do invest some Living Bodies ; as we find that Acorns have Cups ; Nuts have Shells ; Beans and Pease , Pods ; and Trees , Barks : So likewise Fish have Scales , and some of them hard and stony Shells ; as Oysters , Crabs , Lobsters , &c. All which without doubt are formed , by the continual impulse of outward Bodies ; much in like manner as we find , that the Palms of the Hands of Delvers and Ditchers , by continual handling of the Spade , grow very hard ; and as the Soles of our Feet become brawny and thick Skin'd , by assiduous beating against the Ground . IV. The same is the Cause of the Hardness in Inanimate Bodies . They are the same Causes also that produce Hardness in Inanimate Bodies . For Snow laid near the Fire becomes harder and more compact ; and the outside of Bread becomes hardned to a Crust ; and so likewise the outside of Flesh roasted , broiled , or fryed , grows harder than the in●ide . Neither can any other Reason be given , why Broath , Boil'd Milk , and other kinds of Supping Meats , presently after they are removed from the Fire , get a skin or film on the top of them , but this , that the agitation of the Heat is diminished by the contact of the cold Air , and in a manner quite stopt . V. Th Surface of Water is smooth , and more difficulty divided than its inward parts . Hence it is also , that the Surface of all Liquors is smooth and even ; for tho' the Parts of Water be uniformly moved , as well as the Air , which immediately toucheth them ; yet because the parts of the Water are moved after another manner , than those of the Air ; and that the Subtil matter which surrounds the parts of the Air is quite otherwise moved than that which swims amongst the particles of the water ; by this means the surface of either of them becomes smooth , much after the same manner as when two Hard Bodies are rub'd against one another ; only with this difference , that this smoothness is with much more ease produced in liquid Bodies , because of the easie and ready Mobility of their Parts . And this is the reason also why the surface of the wateer is divided with more difficulty , than its inward parts . VI. The Hardness of Bodies sometimes proceeds from Cold. Cold also conduceth much to the Hardning of several Bodies : for we see that the surface of water in a River , by cold is congealed , whilst that which is at the bottom , by reason of the stronger motion of heat , suffers not the least alteration ; and so also are many other Bodies sometimes hardned by cold , and thereby attain that degree of firmness , which is caused in them , by other Bodies beating upon them : For frozen Fruit , if it be put into cold water , and set in a warmish place , will appear covered over with a Crust of Ice , and in like manner the Flesh of Beasts or Fish that is frozen , if it be set in a warm place covered with Snow , there will appear a hard Crust of Ice on the surface of it . VII . But more naturally from Heat . But tho' cold may sometimes contribute to the hardning of Bodies , yet this effect may with greater Right be attributed to Heat , whose property it is to agitate the parts of Bodies , and bring them closer together , by exhaling their superfluous moisture . Thus a Body exposed to the Beams of the Sun , as by this means it becomes better digested and riper ; so likewise it attains a greater degree of firmness and hardness . This is manifest in Apples , Pears , Cherries , Plums and such like , whose outside by the Heat of the Sun becomes hardned , and covered with a Skin . VIII . All these ways are reducible to one general way of Hardning of Bodies . But which way soever this Hardness may be produced in Bodies , it seems that they are all reducible to one general Cause , forasmuch as their outward parts endure the impulse of other Bodies rushing against them and dashing upon them , and by hindring their ingress , do resist and beat them off . CHAP. V. Of the Different Degrees of Heat in Living Bodies . I. There is a different degree of heat in Living Bodies . First according to the Diversity of Age. THO' Living Bodies may be distinguisht according to the External Heat that Acts upon them , as they are in Countries or Places nearer or farther from the Sun : yet may they much better be differenced by that Internal Heat , which produceth divers Effects in them with relation to their Age , Sex and Nature . For as to their Age , it is evident that Heat in Living Bodies is not always in the same state and vigor . For in Infants and Youth the natural Heat is much weakned by the abundance of moisture , that it cannot exert its full strength ; which is the reason why Infants are so prone to sleep , and apt to shed tears . But in the Height and Vigour of Age , the Heat is more strong and active ; and the moisture being much lessened , the Spirits become more hot and fiery . For which cause those who have attained to Manly strength , are more strongly inflam'd and Amorous , whereas in Old Men , by the decrease of heat , and the increase of cold and driness , their natural faculties are much weakned and decayed . II. Secondly according to the difference of Sexes , and what the difference of Sex in Plants is . Difference of Sex also produceth great diversity of Heat ; for Females are commonly of a more cold and moist complexion than Males . Which difference is observed in Plants ; for those are accounted Female Plants , which are more cold and moist , and have less virtue and strength ; so that tho' they bring forth Flowers , yet for want of Heat they don't produce either Fruit or Seed . Whereas the Male Plants are more beautiful , as to their outward appearance , and have both Fruit and Seed . And for this cause it is , that the Female Plant delights in the Company and Proximity of the Male ; according to what PLINY relates of the Palm-tree , which by some influence proceeding from the Male , doth conceive and become fruitful , and as soon as the Male , which stood near it , is cut down , dies presently . III. Amongst Animals the Females are colder than the Males . Amongst Animals also the Females are much colder and moister than the Males . As may be gathered from hence , that Males generally exceed Females in Bulk and Stature , as appears in Men , Pheasants , Peacocks and the like . The Males in Birds are commonly more beautiful and pompous for their Feathers . Amongst fourfooted Beasts the Males and Females are diversly distinguisht ; thus He-Goats have Horns , which their Females want ; and Rams have greater and more crooked Horns than the Ewes . Cocks are adorned with Combs , and armed with Spurs ; whereas Hens have in a manner no Combs at all . And in general all Males have a stronger and deeper Voice than Females , who generally have but a shrill and weak voice . All which effects cannot be better assign'd to any other cause , than to the greater degree of heat which is in Males , beyond that which is in Females . And the same may likewise be gathered from hence , that Males , in their tender years , whilst their inborn heat is overpowered with too much moisture , do much resemble Females , neither is any difference in their Temper to be discern'd between them . So likewise guelded Animals do more resemble Females , for the same defect of heat . IV. Why Men in the Winter time are more brisk , and Women in Summer . Another instance of this diversity of Heat in Males and Females is this ; that Men , during the Winter Season , are more Brisk , and Women on the contrary , in the Summer and hot weather . The reason whereof is , because the Vital Spirits , which are in continual motion in a hot and dry complexion of Body , such as Mens are in the hot season of the Year are more dissipated ; but in a cold season are more condensed , and thereby better preserved . Whereas in cold and moist Bodies , such as those of the Female Sex generally are ; the Heat of the Summer cherisheth and excites the Spirits ; and the cold of the Winter doth render them dull and sluggish . V. Of the four degrees of Heat that are in Living Bodies . There is also a distinction and difference of Heat with relation to the different kinds of Living Things . And accordingly Physicians distinguish Heat into 4 degrees : They call that the First Degree of Heat , when that Quality is somewhat predominant above the rest that are in the mixt Body : The Second when the Heat sensibly discovers its predominance in the Body : The Third , when it strongly and powerfully displays it self : And the Fourth when that Quality is prevalent in the highest degree . Thus amongst Plants , Borage , Flowers of Betony , Beets , Sweet Almonds , &c. because they impart some small effect of Heat to a well tempered Body , are said to be Hot in the First Degree . Smallage , Betony , Balm , Rosemary , Wormwood , Saffron , Sage , Cinnamon , &c. because they produce a moderate Heat , and that very sensibly , are called Hot in the Second Degree . And because others impart a strong Heat to those that take them , as Origany , Hysop , Celandine , Mints , Radish , Mother of Tyme , &c. they are accounted Hot in the Third Degree : And last of all , because Garlick , Pepper , Mustard , Cresses , Pellitory of Spain , &c. communicate a much more vehement degree of Heat , they are called Hot in the Fourth Degree . VI. Animals are distinguisht according to their several degrees of Heat . This Distinction of Heat is not only observable in Plants , but also in Animals . For we see daily that those Excrements which remain after that the Meat hath been digested by the heat of our Stomachs , serve for food to Hogs and Hens after having past through a new Fermentation in them ; and that the remainders thereof being laid to the Roots of Plants , are consumed again by the Heat of the Sun , leaving only the grosser parts behind them . Which different changes could not be wrought upon those Excrements , if there were not different degrees of Heat in the Bodies of Living Creatures , forasmuch as that which can no further be wrought upon by the Fermentation of our Stomachs , may yet be further altered and digested by a new Fermentation in the Stomachs of other Animals . Thus a Mass of Dough that hath been fermented by Leaven or Yest , tho' it cannot be made to rise again with the same ferment ; yet may it for all that undergo a new Fermentation in our Stomachs : Which Alterations , I say , do prove a distinction of Heat , and a different power of dissolving Bodies to be in Living Creatures . CHAP. VI. The Virtue and Nature of Aliments remain in the Bodies that are Fed and Nourished by them . I. The whole Aliment is not changed into the substance of the thing nourished . THO' Aliment or Food in Living Bodies be digested by the Natural Heat , and by that means becomes changed into their nature , yet it is not so entirely assimilated to them , as not to retain some of its former Nature and Virtue . This appears from our Excrements , which tho' by the heat of our Stomachs they have been separated from the thinner parts of our meat , and as it were changed into a quite different substance , yet retain something of the virtues and qualities of those Bodies whence they have been separated , and often preserve something of their colour and smell . Thus they who eat any quantity of Black Cherries or Myrtle Berries , will find their Excrements ting'd of a Black Colour . And Sparagus and Turpentine after having passed through the Stomach and other Organs of Nutrition communicate their Odour to the Urine . II. Some part of the Aliment is kept or remains with the Body that is fed . If therefore so great virtue of the Food do still remain in the Excrements , with much more reason may we conclude , that the same much more abides in the Bodies that are nourisht by , and receive their encrease from them ; forasmuch as the more pure and Juicy part of the Food abides with them , which doth most abound in virtue . And tho' Animals void many particles of their Aliment by Siege , by Urine , by Sweat and by insensible Transpiration ; yet cannot this hinder us from concluding that many Particles of Aliment must remain in the Bodies of those Animals that are nourisht and grow by it . Hence it is that Country People that feed upon Beef , Bacon , Cheese , and such like strong Food , which nourish much , but are somewhat hard of Digestion , are much more strong in Body than those who feed upon Dainties , who generally are weak and unfit to endure labour . Who doth not find in himself a different state of Body when he drinks Wine , than when his ordinary drink is Beer , Ale or Water ? And do not those that that fare deliciously and feed high , find themselves more ungoverned in their Passions and Lusts , than those who live abstemiously , and content themselves with necessary Food ? III. Milk is differently qualified according to the difference of the Pasture the Cows graze in . The virtue of Aliment is more particularly discernible in the fruits and products of Plants and Animals , which differ , according to the diversity of the matter whereof they are formed . Thus Milk is not always qualified alike , but according as the matter of it is drawn from such or such Plants , its virtues and qualities vary . Cows that feed upon Grass yield a very different Milk and Butter from those that eat Straw . It is a matter also of common Experience , that Cows that in their feeding light upon wild Garlick , communicate a strong tast of Garlick to their Milk ; and that the flesh of Sheep , which feed upon wild Thyme hath a much more grateful tast than that of others . GALEN makes mention of a certain Medicinal Milk which is very prevalent in the cure of the Schirrus or hard swelling of the Liver ; the Cow that yields it being made to feed on some peculiar Herbs conducing to that end . The story also of that Young Woman is well known , who having used herself to the eating of Wolfs-bane ( which is a most poisonous Herb ) tho' she found no hurt by it herself , yet was the death of those men that lay with her . IV. Herbs after they are turned to Blood retain their purging virtue . Physicians likewise do observe , that if the Milk of a Goat , that hath fed upon some purging Plant , be eaten by a Nurse that suckles a Child , it will communicate its purging virtue to the Nurses Milk , and purge the Child that sucks it . It is known also that the Milk of Cows , and the Butter made of it is far better in the Spring , when Cows feed upon tender Herbs and Flowers , than at other times . So likewise it is observed that the Honey which the Bees gather from Thyme , Sage , Savory and Tree Trefoile , being the Herbs they most of all delight in is the best of all other . For this reason the Honey of Sardinia hath a bitter tast , because it is mostly gathered from Wormwood . And Historians tell us , that the Honey made about the City Heraclea in Pontus , had a venemous quality , because it was gathered from the poisonous Aconite . V. The Ground or Soil in which the Vines grow , communicates to the Wine some of its virtue . The same may be also experienc'd in Wine , which being adulterated with Quick Lime , Plaister of Paris , Rocket , Wild Myrtle or Butchers Broom , Jews Lime , Clary and the like , becomes pernicious to the Body of Man. There are also some sorts of VVine which do particularly affect our Dispositions . It is an Observation of LEMNIUS , that the Common People in Holland , by their much drinking of Poitou Wine , which sends sharp Fumes up to the Brain , are thereby inclined to be very peevish and quarrelsom ; whereas those of them that drink Rhenish Wine , are not so . And it is observed , that the Fruits and Plants which are the product of dung'd Grounds are not so good and wholsom , as those that grow , where no such Art hath been used : As likewise , that the Grain or Pulse that grows on such ground , cannot be so long kept from becoming musty , or being eaten by Worms ; and that the Beer brewed of such Grain doth sooner turn Sower . VI. Living Creatures retain the Qualities of their Aliment . The Virtue of Food is also perceiv'd and distinguish'd in Animals . For in some parts of Holland , which is a Watry Country , and abounding with fish , they fatten their Hogs with them ; which tho' they soon fat them , yet it is observed that the Flesh of these Swine is more flaggy and less firm , neither is it so wholsom ; and differs much in Taste from the flesh of those Swine , which have been fed with more convenient Aliment : Because Fish , as GALEN observes , generates a thinner Blood , and more Excrementitious , than the flesh of Terrestrial Animals . VII . Many Diseases arise from the Qualities of Food . So likewise from the Qualities of Aliments , remaining in the Body of Man , many Diseases are generated ; as the Scurvy , the Goat , &c. Thus we find that the Scurvy is an Epidemical Disease in those Countries , where they eat Meat much salted , and dried in the Smoak , and brew their Beer of Brackish Water . And those are commonly troubled with the Goat , who live intemperately and luxuriously , especially if they feed much upon salt Meats , and drink much Wine . For as the Learned Dr. WILLIS observes in his Pathologia Morborum , by this means a raw and indigested Chyle is prepared ; and then , by the intemperate drinking of Wine , those Saline Dregs , which otherwise would go to the Excrement , and be carried forth with them , being too much exalted , are conveyed into the Blood : To which Enormities of Diet , if a Sedentary Lifes , Idleness , and Sleeping after Dinner do concur , whereby those Superfluities are hindred from exhaling , or being discust by Labour and Exercise , they will the more certainly produce the Goat , and that in the worst manner . CHAP. VII . Living things do vary and alter , according to the difference of Place and Time. I. What the Alteration or Change of Bodies imports . A Body is said to be alter'd , when it suffers any change in the figures of its Sensible or Insensible parts ; or when it loseth some Parts , and acquires others . Thus a bruised Apple is said to be changed or alter'd , because many of its parts have acquired another Position ; and some of them may have quite changed their former figures . This Alteration is caused two several ways in Living Bodies , either by being removed from one place to another , as from a hot to a cold Country ; or on the contrary ; or by the different Seasons of the Year , which is the diversity of Time. II. The Difference of Countries , contributes to the variety of Living things . Living things , that are removed from one Country to another , are by this means variously alter'd , being sometimes meliorated , and sometimes again degenerating , as the Climat doth agree , or disagree with them : And this , because of the difference of Heat and Cold , Moisture and Driness , that predominates in those Countries ; for according as the Climat or Soil of any Country differs , so the disposition of those Bodies that are there differ also . Thus some Plants grow much taller and fairer in some Countries and Soils , than in others . Some Plants being removed to a better Air and Soil , are thereby meliorated and bring forth wholsom Fruits ; whereas in their Native Soil , they brought forth deadly and poisonous Fruits . As COLUMELLA acquaints us with a certain Plant , which by being removed from Persia to Egypt , loseth its venemous Quality , and becomes wholsom to those that eat it . III. Herbs vary according to the diversity of the Soil or Country where they grow . Thus Herbs that grow in Barren Grounds , are very different from those that grow in a rich and fat Soil , which are far more large and fair , than the former . Thus Bugloss , Comfry and Avens , change the colour of their Flowers by the Industry of Gardiners , and the Fruitfulness of the Soil where they are planted . Violets also , whose Natural colour is Purple , are changed into a Blew , when they grow in rich Ground . In like manner , some Plants that are armed with Thorns and Prickles , being transplanted to some certain places , lose much of their Prickliness . IV. Plants degenerate , when transplanted from a fruitful Soil , to a barren . And on the contrary , Plants removed from a fat and rich Ground , to a dry and Barren place , do frequently degenerate . So we find that the Plants brought from the Canary Islands , and other hot Countries , if they be planted in our Northern Climat , lose much of their genuine Virtue and excellence ; as we see in the Herb called Masterwort , which tho' it retain the same outward shape and appearance , yet differs very much in force and virtue , from what it is in those hotter Countries . Yea , it is reported by some , that the Earth brought from the Fortunate Islands , and other far distant Countries , into Italy , hath brought forth several strange Plants , different from those that grow in Europe . V. All Plants have particular places which they delight in . All kinds of Plants affect some particular Climat and Soil , and especially those places where they sprung up at first , whence they cannot be removed without danger of being prejudiced thereby . For some love shady and moist places ; others , high grounds , and expos'd to the Sun ; some delight in morish and fenny Ground , others in dry and sandy ; which , if they be removed from these places , lose much of their virtue and fairness . Those which delight in hot Countries , will not grow in those that lye far North ; neither will those that thrive in cold Countries , live under the Torrid Zone . Thus Wormwood grows plentifully in Pontus ; Orris , in Dalmatia ; Hellebore , in the Island Anticyra ; Sea Purslan , on the Sea-s●●a● . VIRGIL , in the Second Book of his 〈◊〉 does elegantly set this forth : All Grounds not all things bear , the Alder-Tree Grows in the Fens ; with Sallows Brooks agree : Ash , craggy Mountains ; Shoars sweet Myrtle fills ; And lastly , Bacchus loves the Sunny-Hills . VI. Those that thrive in Hot Countries , commonly dye in Cold Countries . For the Plants that thrive in Arabia , the East or West Indies , Brazile , &c. being transported to France , Flanders , or Germany , do not grow there without great Pains-taking , and after all do not answer the Virtues of those that grow in those hotter Countries . Yea , the curious lovers of Plants , when they transplant any Herbs or Trees , take diligent observation of their standing in the places where they Naturally grew , what part of them was turned towards the Pole , &c. that they may set it again in the very same manner as it stood before ; because they suppose that the change of their former situation may very much hinder the thriving of them , and spoil the inward disposition of their Parts . See the History of Nature , concerning Plants , Chap. VI. VII . Change of Place is the Cause of Alteration in Animals also . Much a like Alteration we shall also find in Animals that are transported from one place to another . For we find that Youths , upon any considerable changing of the Air wherein they were born , do shoot up strangely in a few Months time , more than they would have done , had they continued at home in several Years . Others again , upon changing of their Native Soil , do grow thin and meager , and lose their fresh and lively colour . It is also notorious , that some persons have an Antipathy against some places , because that where they were born is of a quite opposite Temperament . VIII . Difference of Time and Season , is the Cause also of alteration in Living Bodies . Neither doth the Difference of Time occasion a less change in Living things , than that of Place . For tho' Plants be nourished all the Year through , yet do not they always shew forth the same effects of their Nourishment ; for during Winter they are divested of their Leaves and Seeds , excepting only some few , viz. the Bay-tree , the Yew , the Ivy-bush , &c. which by reason of the clammy Juice wherewith they are nourished , do not shed their Leaves , as the rest do . Accordingly also Care is taken , that such Seeds which can endure the Frosts of Winter , be sown in Autumn ; and others again at the beginning of Spring , or a little before the Humour begins to move , lest by the too abundant affluence of it , the Roots should perish . For as some Seeds are spoiled for want of Moisture , so others perish by an overplus of it . Fruits also are subject to Alteration , according to the several Seasons of the Year , most of which are only green in Summer , but attain perfect maturity in Autumn , and losing their former taste , smell , and colour , do acquire new Qualities , and accordingly affect our Senses . CHAP. VIII . Of Plants ; and first of all of their several Parts . I. The Parts of Plants are either Simple or Compound . HAving hitherto spoke of Living Bodies in General , we come now to the handling of Plants in Particular , to the end that having explained their Nature , what we have to say concerning Animals may be the more readily understood . The first thing to be considered in Plants , is their Parts , which are either Simple or Compound . I call those Simple parts , which consist of Particles of the same Texture and Constitution ; such as are the Juices or Liquors contained in them . The Compound parts are those that are made up of parts of a different Nature ; and are also called Organical parts , because they concur to some one Action or other ; as the Root , Stalk , Leaves , Flowers , &c. Some whereof are Perficient and Integral ; others Conservative of the kind ; others Ornamental , and others Defensive . The Parts belonging to the compleating and perfecting of a Plant , are the Root , and Stem or Stalk ; those that concur to the propagating of their kind , are the Fruit and Seed ; and those that defend them from the Injuries of the weather , and otherwise , are the Bark Thoose . or Prickles , Shells . II. The Simple parts of a Plant. The Simple or Similar parts are the Juice , or Moisture , the Nerves , the Windpipe , and the Flesh of Plants . III. Juice or Moisture . The Juice or Moisture , is the liquid part of a Plant , diffused through the substance of it . This Juice is , as it were , the Blood of the Plant , which if it chance to burst through any part of it , whether of its own accord , or by the heat of the Sun , or by cutting or lopping of the Plant , is called a Tear , because it breaks out of the Tree like a Tear , or Drop . Which Drops are twofold : The first are such as are of a Watry Nature , having something of an Earthly consistence joyn'd with them , and are called Gum ; which is that congealed and thick Liquor , that proceeds from the Trunks of Trees , and cleaves to the Barks of them ; and the other more oily and fat , which is called Rosin . IV. The Nerves or Sinews . Nerves in a Plant , are those fibres or strings , which give consistence and strength to the softer Parts of a Plant ; and by which the Alimentary Juice ascends . The Spirit contracts the fibre or string , and so drives the Moisture upwards , which descends through the little Bougets or Membranous passages . For in every Plant , besides the Sensible Body , there is a Subtil vigorous Body , the Producer of Motion , viz. the Spirit , which runs through the whole Body of it . V. The Wind-Pipe . The Trachea or Wind-pipe of a Plant , being also a Similar part , is an open and wide Vessel , consisting of little thin Plates , ranged like the Scales of a Fish , or writhen and twisted together , being for the most part of a Silver colour ; and may be easily stretched , prest and bent . In the Trunk or Stem of a Tree they run upwards ; in the Leaves they are made like a Net , and take up great Spaces in them ; in the Sprouts , Buds , and Shoots they are twisted , and are called by a Learned Man , Vasa spiralia , Spiral Vessels . VI. The Flesh . The Flesh is another Similar part of a Plant , which is thick , but somewhat soft , and is outwardly cover'd with the Bark : Of which hereafter . VII . The Compound Parts . The Compound , or Dissimilar parts of a Plant chiefly , are the Root , the Stem or Stalk , the Bark , the Pith , the Branches , Leaves , Flowers , and Fruits . VIII . What the Root is . The Root is the lowest part of a Plant , sticking in the ground , through the passages and pores whereof the Alimentary Juice , being moved by Heat , is driven upwards . This Part is so necessary to Plants , that none can subsist without it . There is one kind of the Herb called Chamoeleon , which wants a stalk ; Wheat hath never a branch ; the Fig-tree hath no flowers , Jesamin hath no fruit ; but there is no Plant without a Root , nay , there are some that are nothing else but a Root , viz. a Mushrom . For the Root is , as it were , the Mouth by which the nourishment is taken in , or like the Hand by which Plants draw Juice out of the Earth , and send it up into the Trunk or Stem . And to this end it is porous , and full of many loose passages for the humour freely to ascend that nourisheth the Plant. The Roots are very different in their Figures , so that almost every different kind hath Roots of a different figure . In a Fig Tree and Olive Tree the Root is single , and sinks very deep , yet sends forth several little twigs from the sides of it . In Leeks and Onions the Roots are manifold , as consisting of innumerable shreads or Hairs ; in Turneps it is Round ; in Beets it is without Joints ; in Orris it is full of Joints ; sometimes it consists of many round knots , as in Birthwort . Yet all Roots generally agree in this , that they end in a Cone , or sharp point ; for the upper part of the Root , drawing to it self more Aliment , doth grow to a greater bulk than the lower part . IX . The Trunk or Stock . The Stock , Trunk or Stalk is that part of a Plant , which riseth up from the Root above the Earth , and transmits the Moisture it receives from it to the utmost parts of it . In Herbs it is properly called the Stalk ; when it is hollow , it is called Calamus the Reed , and in Corn Culmus , the Blade or Straw , and in Pulse Scapus , the Shaft . The Stock or Stem of a Plant , before it be turned in to wood , consists of a spungy substance , somewhat soft , and full of a coagulated Juice , from the abundance whereof its Green Colour proceedeth . If the top of it chance to fall off , it grows so much the thicker , because then it enjoys that part of the Aliment which was appointed for the nourishment of the top , and thereupon dilates its self and grows bigger in bulk . It is common to the Trunks of Plants to become crooked , and to bend one way , when the ground begins to be dry and sapless , and furnisheth a more hard Alimental Matter , than can be well digested by the Tree . Tho' the Stocks of Plants be generally Cylindrical , yet there are some that are corner'd : In Daffodils the Stalk is two-corner'd ; in Cyperus , which is a kind of Rush , it is three-corner'd ; and in Horebound the Stalk is 4 square . X. The Bark . The Bark is , as it were , the Skin or Hide wherewith the Plant is cover'd ; and the same is manifold in one and the same Plant , viz. the outward , which resembles the Cuticle or thin outward Skin in Man ; the middlemost which is thicker like a Hide ; and the inmost which is like a thin Membran . And therefore the Bark is reckon'd amongst the Dissimilar Parts of a Plant , because it consists of a great variety of Strings and Fibres , and of several Coats . For it is not the same in all Plants ; for in some it is thick , as in the Poplar Tree ; in others thin , as in the Bay Tree ; in a Reed it is like a Membrane ; in a Vine Nervous or Sinewy . In the Spring time the Bark is with ease separated from the Tree , because of the Juice that ascends between it and the Tree , which dissolves that Glew whereby it was before fastned to the wood of it . XI . The Pith. The Pith of a Plant , which by way of excellence is called the Heart , Brain and Matrix , is that middle part whereby the Aliment is conveighed from the Root to the upper parts . The same is also very different ; for in some Plants it is soft and spungy , as in the Elder Tree , where it resembles froth ; in others again it is harder , as in the Pine Tree , whose Pith is woody . The seminal virtue of the Plant is suppos'd to be lodg'd in the Pith , forasmuch as not only the Branches , but the Fruit and Seed are derived from it . XII . The Branches . The Branches are the upper parts of a Plant which spread themselves from the Stalk or the Trunk of a Tree , as so many Arms stretched forth , to which they are joined by a glutinous substance hardned , which they call Nodus or a Knot , and in their sprouting forth from the Trunk make an Angle , which in Latin is called Sinus , resembling the Arm-pit , or the joining of the Arm to the Body . In many Trees the Branches grow without any order , but in the Pitch and Firr Tree they appear in a curious and beautiful ranging ; the thinner and utmost parts of the Branches are called Sprigs , which are more tender than the rest of the Branch , having not long been expos'd to the intemperature of the Air or VVeather . The swellings that appear in the Joints of them , are called Buds , as long as they continue round , and are not yet open'd . And the thin tops of the Sprigs are called Sprouts . XIII . The Leaves . Leaves are the ornament of Plants , and the coverings of the Flowers and Fruit , shading them from the Heat , and defending them from the distemperature of the VVeather or Air. They generally proceed from the more thin and tender part of the Bark : so that when the Bark is pluck'd from a Bough , we find that the Leaves stick to it , and are pull'd off together with it . Yea , if the whole hollow of the Bark be pull'd off from a Branch , and the lower part of it be put into water , in the Spring time , Leaves will sprout forth from the upper part of it . The Figure of Leaves is manifold ; for in some Plants they are large and broad , as in a Gourd ; in others very small , as in a Pine Tree ; in some thick and fleshy , as in Purslain ; in others nervous and full of Sinews , as in Wheat ; in Onions they are hollow like a Pipe ; in Aloes partly round , and partly angulous . The Stalk or Stele of Leaves is also various ; in those of an Olive Tree it is short ; that of Vine Leaves is somewhat long ; in Colts-foot and Herbs that grow in Ponds , the stele of the Leaves is very long , because in them it is instead of a Stem or Stalk . Sometimes only one Leaf grows upon one Stele , as in the Poplar and most other Trees , sometimes more , whence those Plants are called 3 leav'd , 5 leav'd , 7 leav'd . XIV . The Flowers Flowers which are the most beautiful product of sporting Nature , do greatly conduce to the Ornament of a Plant. They consist of a fourfold substance , or rather of so many parts , viz. of the Knot or Cup , the Leaves , the Threads or Thongs , and the Stalk or Stele . The Knot or Cup is that part which covers the Flower and keeps the parts of it together ; as being the Base and support of it ; and therefore is of thicker and stronger substance , and not so beautiful as the Flower it self . The Leaves of the Flower compose the Body , and Beauty of the Flower it self , being remarkable for their Tincture , but very fading , and of a very tender Complexion and Texture . The Threads are those long and slender parts in the middle or Navel of a Flower like Hairs or Threads , which in some Flowers are thicker than in others , and often have little Spires at the top of them ; and are set round about the Stele , which is a long , but thicker part of a Flower , rising up from the middle of the Navel of it . The Stele is the middlemost part of the Flower , sticking to the Rudiment of the Fruit or Seed . It is called in Latin Stylus , because of its being thin and long . All these parts are very distinguishable in a Rose and Lilly. XV. The Diversity of Flowers . Some Flowers want a Stele , as those that grow upon the Bay Tree ; some instead thereof have a Stalk , as Saffron . All others generally have a Stele , as appears in the Apple Tree and in a Rose . But more particularly they differ in colour , which in a Violet , is Purple ; in a Marygold , Yellow ; in a Blue-Bottle , Blue ; in a Lilly , White , and in a Rose various , there being Red Roses , Damask Roses , White Roses and party colour'd . Neither do Flowers less differ by their smell : And what is worth our consideration , we find a most grateful odor in a Rose , and none at all in the Plant whence it grows ; whereas in Sage , the Flower is without any smell , tho' the Herb it self be very odorous : In Borage we perceive both Plant and Flower destitute of any scent ; whereas in Lavender both the one and the other are odoriferous . XVI . The Fruit. The Fruit as it includes the Seed , and Flesh or Pulp of the Fruit , is the last work , and , as it were , the Masterpiece of the Plant ; and to the producing whereof all the other parts of the Plant do concur . It s Fashion or Figure is various ; some are partly of a Conical figure , as Pears ; others of a solid Elliptick figure , as Olives , Plums , &c. some are Round , but somewhat flatted at both ends , as Apples ; some perfectly Round , as Cherries , Grapes , Berries , Correns . They have also different Coverings ; for Wheat is cover'd with a single Membran ; a Chesnut with a thick Skin full of Prickles ; an Acron with a scaly Shell or Cup ; Almonds and Wallnuts inwardly with a hard Shell , and outwardly with a green Shell or covering . XVII . How Plants are said to bring forth their Fruits . Plants are said to bring forth , when they bloom or flourish , and when the Flowers break forth from the Knops or Buds ; but the Education or Rearing of their Off-spring is in the Fruit , for the sake whereof a Plant grows , and is therefore call'd the Mother and Nurse of her Fruits . XVIII . Whether Leaves , Fruits and Flowers be the true Parts of a Plant. It hath been a long controverted Question amongst the Ancients , whether Leaves , Flowers , and Fruits , were to be accounted parts of a Plant. THEOPHRASTUS seems inclin'd to the negative , as supposing them to be no more the parts of a Plant than the Births of Animals are any part of them ; for they being after a certain term separated from their Parents , cannot after that properly be called Parts of them . But this Controversie seems only to be about words : for if Leaves may not be accounted as the Parts of those Trees , whence they are yearly separated at the Fall , as in the Oak , Wallnut-tree , &c. why may not they as well be denied to the Pine , Olive Tree and such others which never are without Leaves , seeing that those Trees also lose their Leaves , tho' not altogether , but by a continual succession of new ones , shooting out in the room of the old ones . Therefore those who account only that to be a part of a Plant which always continues with i● , have good reason to bar Leaves of that Priviledge ; for otherwise I see no reason , but they may well enough be admitted to be parts of a Plant. CHAP. IX . Of the Original of Plants . I. There is Virtue in the Earth , whereby it is impowred to bring forth Plants . IT cannot be questioned , but that in the Beginning of the World there was a Power communicated to the Earth of producing Plants , and that great variety of Vegetables that are found in all Countries . In the first Chapter of Genesis we find these words , Let the Earth bring forth Grass , the Herb yielding Seed , and the Fruit-Tree yielding Fruit after its kind , whose Seed is in it self after his kind . Now this virtue imparted to the Earth continues still in its full vigor , neither doth any thing spring out of the Earth , but by this virtue . But forasmuch as many Vegetables seem to spring of themselves , whereas others are manifestly beholden to Root or Seed , for their Growth or Production ; we are to enquire how this twofold Production is performed , and how it comes to pass that some spring as of themselves , whereas others stand in need of a manifest Seed for their Production . II. What those Plants are that grow of themselves . Those Plants are said to spring of themselves , which the Earth produceth without the sowing of Seed , and to grow by accident , as the Schools express it . Such as are Purslain , Housleek , Penny-royal , &c. which , as some tell us , do of themselves grow out of the Earth that is dug up , in a shady and moist Wood , being put into Earthen Pots . PORTA tells us , lib. 2. Phyt. cap. 1. that having exposed some Earth that had been dug up from the deepest foundations of a House , to the Air , within a few days , several kinds of Herbs sprung up from it , familiar to the Soil and Climat of of Naples . And the famous Lord VERULAM assures us , that the Earth dug up from the foundations of Houses , or from the bottom of Wells , being put into Pots , will after a set season produce several sorts of Herbs . For if you take up Earth not above an Ell deep , it will be fruitful the first year ; but if you take up that which lies deeper , it will not produce any thing till after a years time , and sometimes 2 years . III. The Plants which are said to grow of themselves , owe their Rise to Seeds . Some Philosophers are of opinion , that such Plants as these are produced without any Seeds at all , and that the Earth produceth them by an innate vertue of their own . But that which hinders me from assenting to this opinion is , because I find that all Countries do not produce the same Plants ; which could not so happen if there were not diverse dispositions in them , proper for their several Productions . But what can these different Dispositions be , but Seeds ; or those first Buds from whence Plants arise ? For what else doth the Sun do , when it cherisheth the Earth with its heat , mixeth it with Water , exhales the moisture from it , dries the Particles of it , &c. but work such dispositions in the Earth , and so fit the insensible parts of it , as that from the due ranging of them , the Roots of Plants , their Strings ▪ Ribs and Veins are formed , through which their Aliment may be conveighed , and being sufficiently prepared , break forth in the other parts of it ? IV. What are the Seeds of Plants , that are said to grow of themselves . The Seeds therefore of these Plants , are those Insensible Particles , which by the agitation of the Subtil matter do obtain such a situation , figure , and motion , as are needful to form the first Rudiment of a Plant. And forasmuch as this disposition of parts is not to be found in all Parts of the Earth alike ; therefore it is no wonder , that all Plants grow not in all Countries . We are to take Notice also , that there is no difference betwixt these kind of Seeds , and those which are the Product of Plants ; save only this , that the Parts of these latter are more closely compacted together , and more orderly framed : Whereas those which arise from the various Motion , Spreading , Mixture , and Composition of concurring Particles , are not so exactly joyn'd and formed , and therefore Plants are more slowly produc'd by them . V. The first Trees were produc'd without Seed . Some Authors relate as Miracles , that sometimes tall Trees , yea , whole Woods , have sprung out of the Earth , without Seeds : But they did not consider , that vast store of Seeds , which are hid in the Earth , and are the beginnings and first Draughts of those Seeds that are the products of Herbs and Trees . THEOPHRASTUS observes , 3 Histor . 2. that the Earth in Crete , presently after it was dig'd up , did bring forth Cypress Trees , which are also propagated by Slips . Can any one believe , that the first Trees were the product of Seeds fallen from Trees ? Or , that the Great Woods that are found up and down , were sown by Men ? For seeing that the World had a Beginning , and that we cannot admit a progress to Infinite , we must come at last to those Trees which had no such Seeds , whence they were produc'd , and for the production whereof the Nature of the Climat and Soil were sufficient . For Cinnamon , Myrrh , Frankinsence , and Cassia , did always abound in Southern Countries ; as the Northern Grounds never wanted Willows , Oaks , Firr-trees , Elms , &c. which delight most in those places , and will not without care and difficulty grow elsewhere . According to that of Virgil : The blackest Ebony from India comes , And from Sabaea Aromatick Gums . VI. Calcin'd Earth produceth greatabundance of Plants . Some observe , that Earth that is burnt or calcin'd , when expos'd to the Air and water'd with plentiful Showers , doth immediately bring forth great store of Vegetables ; because the Pores of the Earth being opened by this means , the Seeds are set free from their Prisons , and meeting together are entangled , and so constitute little Masses , from whence those Plants proceed . It is a thing very notorious , that in Walks that are thick overspread with Sand , the Earth the first Year produceth only knotted Grass , and the following Years a thick and swoln Grass , like the blade of Corn ; because the hardness of the Sand or Gravel hath hindred the due coagulation of the Seeds ; but as the surface of the Earth comes to be more freed from the Sand , the Seeds can the better come together , and thus produce common Grass ; to which Showers do very much contribute , by moistning the Earth , and thereby setting the Seeds that are in it more at liberty . VII . How Plants are produc'd from perfect form'd Seeds . As to Plants that are Sown by Men , the Explication of their way of Production is not difficult . For when , by Example , a Pea or Bean is put into the Earth , and there meets with a due moisture and moderate heat , it first begins to swell , and distends its Skin or Husk , and having at last broke it , the same Causes continuing , do afford it new Matter , and the first beginning of the Plant , which we call the Bud , appears ; which by thin Fibres or Strings , spreading it self through the pores of the Earth , and the Parts of it pressing upon it , must needs grow hard ; and thus is the Root of the Plant formed . The Matter being thus digested into a Root , being recruited by new Incoms of Heat , and dilated by the same mounting upwards , the tender and green Substance , which is commonly call'd the Leaf or Bud , riseth and springs up ; which still growing higher , turns to a Stalk : For a purer Juice being now duly prepared in the Roots , doth by degrees ascend from thence into the Stalk , which Motion upwards is much promoted by the pores of the woody Stalk or Stem . Moreover , Heat being active and impatient of Idleness , continually drives the moisture or Juice upwards ; and so the Stalk becomes extended , and riseth to a considerable height . Now when the Juice doth not ascend so fast , and that the parts of it , by the agitation of Heat are more depurated , they are by the driving of the Fire carried above the Stalk , where meeting with the cold Air , they are stopt from mounting any higher ; where still more particles of the said Juice joyning them , they swell into a Bud. And whereas the affluence of Heat through the Stalk still continues , is bursts open , or splits the Bud , and by this means makes way for the Subtil matter to break forth , and display it self in the appearance of a beautiful Flower . And lastly , after that the Alimentary Juice hath still attain'd a further degree of Perfection , another Substance succeeds in the room of the Flower , which being hollow within , contains the Fruit , that is , the Pea or Bean , and is a defence to it , against the Injuries of the Air. For in all Natural things there is , as it were a kind of Circle , whilst the Seed of the Plant , under a different respect , is called the Antecedent Principle ; and the Fruit the Consequent . CHAP. X. Of the Nourishment , and Growth or Increase of Plants . I. The Generation of Plants , is accompanied with their Nutrition or Nourishment . HAving spoken of the Forming of Plants , we now proceed to Treat of their Nourishment , which seems to be nothing else but a continued Generation ; because all the Parts of that which is generated would fall away immediately and waste , without the supply of food , that preserves them from perishing . II. What the Nutrition or Nourishment of Plants is . The Nutrition of a Plant therefore is the distribution of the inwardly received , and altered Aliment , into all the Parts of it ; and the transmutation of it into their Substance , for the supply of what continually wastes and evaporates by the force of Heat . For the Moister parts of Plants , as well as Animals , are in a continual flowing , as is manifest from the Leaves and Flowers that are pluck'd off from them ; for these immediately grow limber and wither , by the want of that Juice , which used to distend their Vessels and Bladders . III. Nutrition in Plants , is not an effect of Choice . Not that Plants make use of choice in attracting of their Aliment , so as to take in that which is agreeable to them , and reject the contrary ; forasmuch as no such attraction can be found in Natural things : But we must rather conclude , that the pores of the Roots are of such a figure , as are fit to admit those particles that are proper to nourish the Plant , and exclude the rest ; after the same manner as the Liver , by transmitting the Gall , and the Kidneys the Urine , do thereby separate them from the Blood. IV. Heat is necessary to the Nutrition of Plants . This will be still more manifest , if we suppose 2 things in Plants , viz. Heat and Pores , which are the Instruments of Nutrition : For by Heat the Alimentary Juice is driven upwards , not only from the Earth into the Root , but also into the Trunk , Branches , and the utmost Leaves : And in this its passage the Nourishment is further concocted , prepared , distributed and coagulated , so as to be fit for the Aliment of Plants . For in every Plant or Vegetable there is something , which with respect to the Earth whence they grow , has the Nature of a ferment . V. Whence this Heat proceeds . If you demand , whence this Heat proceeds ; and what that Agent is which begets a fire in Plants ? I answer , That the primary Cause of this Heat is the Sun , whose Rays in the Summer time do continually beat upon the Earth , and the Plants that grow out of it : Neither is the Earth in the Night , or during the Winter , altogether destitute of Heat , but preserves always some portion of warmth communicated to her by the Sun , whereby she fosters the Plants in her Bowels , and assists their Nutrition . Tho' it cannot be deny'd , but that sometimes this heat in Plants is owing to Subterraneous , or any other fires : As we find that Aloes , Onions , the Roots of Saffron and Leeks will grow , being hung up in Rooms , especially where constant fires are kept . VI. Pores also are necessary to the Nutrition of Vegetables . Pores likewise are of great use to the Nutrition and Increase of Plants , since they are the passages by which the Juice is received , and through which it is distributed to all the Parts of the Plant. For as the Lacteal Veins , and the Subclavial Branches of the Vena Cava , are necessary for the receiving of the Aliment , and the conveying of it from one part of the Body to another ; so likewise there are found in Plants innumerable Passages and Channels ; like to the Lacteal Veins in Animals , by which the Juice is transmitted from the Root , to the utmost parts . For such is the disposition of Pores in Vegetables , that the Aliment is much more conveniently transmitted by them , than it could be through the free and open Air ; for by this means the dissipation of the Alimental Juice is prevented , and its motion is more ready and without interruption : As we find that Bullets move more readily through Pipes , and Smoak through the Funnel of a Chimney , than in the open Air. And hence it proceeds , that Lands that have been often sown , are thereby more exhausted , than those that lye Fallow . VII . How Plants are nourished . These things being understood , it will be no longer difficult to conceive , how the Nutrition of Plants is performed , and how they are increased ; for Vegetables are nourished whilst the Juice is by the Sun , and the rest of the Subtil matter , driven into the pores of the Root , and being there prepared by Concoction , after it hath past several strainings , doth spread it self in length , breadth , and depth . The softness also or tenderness of the Sprout or Sprig , doth much further the conveyance of the Nourishment ; because it makes the Pores to be easily widened and distended . For as we find that the pores of Bread , being dipt in Wine or Water , become immediately distended thereby ; so likewise the Alimentary Juice , when driven into the little Channels of Vegetables , doth open and extend them : Which doth not happen so in a dead or wither'd Plant ; because in it the parts of the Pores , and small threads or fibres , are otherwise disposed , so as not to be able to admit the Juice , which the Subtil matter hath driven into the Roots . VIII . The Nourishment of Plants consists of a Moisture , mingled with the Fatness of the Earth . The Aliment of Plants must be Liquid , because it would not be fit to be carried upwards , or strained , in case it were dry or hard . Yet is not this Juice a moisture destitute of all Clammyfatness of the Earth : For seeing that the parts of a Plant must stick and grow together , and that this cannot be without the entanglement of Heterogeneous particles ; it is evident , that Water alone cannot be a fit Aliment for Plants , except it be well temper'd , with a sufficient proportion of the Slimy-fatness of the Earth . And accordingly we find , that Waters in which Salt is dissolved , or mingled with some Fat matter , are most proper for this effect , and make the Vegetables that are watred therewith , to thrive mainly . And it is for the same Reason , that Countrymen do recruit their barren Grounds with Dung , Marle , and the like . For Water alone too swiftly penetrates the Parts of Vegetables , nor stays long enough with them , so as to become their Aliment . IX . Different Plants require different Nourishment . Tho' the Aliment of all Plants be Moisture , temper'd with the Fatness of the Earth ; yet is not every such mixture fit Nourishment for every Plant. For as Vegetables affect particular places ; some delighting in shady and low Valleys , others in high and upland Grounds ; some in dry and sandy , and others in moist Ground ; some in a fat and rich Soil , and others in a barren and hungry : So accordingly do they stand in need of a different Nourishment , which when ever they miss of , they soon languish . For the Particles of these Juices being various , they must needs constitute different Liquors , whereof those only are a fit Nourishment for such and such a Plant , which have an affinity with it , by the suitableness of the configuration of their Parts . Thus it is observed , that those Roses smell sweeter , that have Garlick growing near them ; because the particles proper to produce a strong and ungrateful Scent , are taken in by the Garlick : So that few or none of them can come to the Rose , to allay or diminish the sweetness of its Odour . X. The Stocks and Branches of Trees grow every year . The stocks or stems of Trees and Shrubs , with the Branches proceeding from them , are every year increased by new woody accessions ; forasmuch as every year , a new round of Fibres is added to the inward Bark or Rind ; which being divided in two parts , the outward part of it is added to the Bark , and the Inward part growing harder and harder , before the end of Autumn , acquires the compactness of wood , and separating it self from the Bark , becomes joyned to the Wood , and so increaseth the Trunk or Stock of the Tree . But tho' we find , that the Trunks and Branches of Trees are encreased this way only , yet must we not conclude from hence , as is commonly believed , that the Juice or Sap of a Tree , mounts upwards only betwixt the Bark and the Wood , but also through those Vessels that lie hid in the Substance of the Wood. This is evident in that the deeper any hole is bored into the Trunk , the Branch or Root of the Tree , the more Juice will distill from it , and that proportionably to the depth of the hole ; so that out of a hole that ●is twice as deep as another , almost a double quantity of Sap will proceed in the same time . XI . This illustrated by the Example of a young Chestnut-tree . This may be easily understood by the Example of a young Chestnut-tree ; for if the Progress of its growth be narrowly observed , we shall find , that after 6 months time , there will be formed in its Bark ( which is very thick ) 2 rows of woody Fibres ; and after 18 months , we shall find 4 of them ; and a year after 8 , and so on , so that always the last Rows do inclose and involve the former , and make , as it were , a Circle about them , which is surrounded with another Circle , and that again with another ; whence it follows , that when the Stem of any Plant is cut across , the Section must appear composed of 2 sorts of substances , viz. of these Circles , and of insertions that are disposed or ranged in the said Stock , much like Circles of Longitude and Latitude in a Terrestrial Globe . XII . How Pants grow and encrease . PLANTS therefore grow or encrease , when greater or more Particles of Alimentary Juice are received by them , than their narrow Pores are able to contain . Hence it is that those Vegetables , the sides of whose Pores are more hard and compact , do not grow so fast as others , whose texture is more loose and open . Thus we find that Peach-trees , Poplars and Willows grow apace , because they have pliable pores , and so crooked and bending , that the Particles of Juice that are driven upwards by the agitation of the subtil matter , can neither advance forward , nor return , and consequently they must enlarge and distend the Plant. And for this reason it is that a Vine , frequently watered , thrives and advances so fast ; and that the Chrysanthemum or Marygold of Peru in 6 months time grows 18 or 20 foot high ; and by the thickness of its Branches seems to challenge the tallest Trees . But on the contrary , Oaks , Medlars , Box , and Pine-trees grow very slowly , because the compactness of their substance , will not suffer their pores to admit sufficient store of Aliment for their speedy growth and encrease . Thus Golden Maiden-Hair , Whitlow-Grass , &c. grow very slow : and for the same reason Trees advance little or nothing in their growth during the Winter Season , because their pores being then shut up by cold , the agitation of heat is not of strength enough to widen them , and to send up the Juice from the Root through them . XIII . How the Juice comes to be joined to the Plants , and stay with them in order to their encrease . It may be questioned here , how the Alimentary Juice , which is forceably driven into the Pores of a Plant , comes to stay there , without being carried upwards into the Air , or without falling down to the Root again . XIV . Answer . To which I Answer , that this effect may be assign'd to 2 Causes : the First is a special conformation of the Pores of Plants ; for we may suppose that by the continual ascent and percolation of the Alimental Juice through the pores of the Plant , many of their small Fibres must be bent in such a manner , as to make the passage rough , by which means , tho' the liquid and fat moisture easily mounts up through them , yet cannot so easily run back again , because of the prominent extremities of the Branchy particles , which oppose their return the same way they entred . Daily experience confirms this , for we find that when with a Knife we cut or scrape a piece of wood with the grain , that is following the natural position of its fibres , we do it with much more ease , than when we attempt the same the contrary way . The other cause is the Winter Frosts , and the coldness of the night , which do fix and condense the Juice conveighed to all the parts of the Plant , and by obstructing the Pores , hinder it from subliming into the Air. For it is certain , that in the Nutrition of Plants , Heat and Cold both act their parts , the one being not sufficient to perform it without the other . XV. The Alimental Juice in Plants is circularly moved . It is to be observed , that as the Blood in Animals , so likewise the nourishing juice in Plants is prepared by a kind of Circulation . For the Juice that is in their Roots or other parts , being tost by a continual motion , cannot throughly be dissolved , mingled or strained , without frequently returning to the same part again , and being altered by various impressions . Which Circulation of the Alimental Juice , depends on the Mechanical Structure of the Fibres , the various disposition whereof performs the same effect , which the Valvulae do in the Veins of Animals ; some of them being so formed , that the Juice finds a ready way to mount up between them ; and others , so as to afford it an open and free Descent . Which may be proved by several Reasons and Experiments in those Vegetables , which are nourished by a thick Juice resembling Milk. XVI . The Proof of this Circulation in Plants , from those of them that have a Milky Juice . Mr. MARIOTTE assures us that he hath observed , that upon the cutting off the Tops of Milky Plants , and the parts nearer the Leaves , a greater quantity of Juice hath proceeded from them , than by cutting the parts nearer to the Root . That he experienced this in Celandine ; and the structure of Fibres in Spurge , and other Milky Plants persuades the same ; for these Fibres by the help of a Microscope appear white , and are nearer unto the Rind , whereas the Juice in the other Fibres is of a more Watry Colour . Whence it seems probable , that the serous Juice , doth mingle with the other thicker , whether Yellow or White , in certain Pipes appointed for that use , much after the same manner as the Chyle entring into the Veins is there mixt with the Blood , and circulates with it . Tho' it be not yet discovered whether this Juice in Plants be carried in the same Pipes from the Branches to the Roots , and again from the Roots to the Branches ; or whether distinct Pipes are assigned to these different motions , as the Veins and Arteries in Animals . CHAP. XI . Of the Division and Difference of Plants . The Division of Plants . A Perfect Plant is by BOTANISTS commonly divided into a Tree , a Shrub , an Undershrub , and an Herb. II. A Tree . A Tree is a woody Plant , in thickness and height exceeding all the rest , whose stock is lasting , and one only by nature , which spreads it self into many Branches and Boughs , as an Oak , Pear and Fir-tree . I say it is lasting or perpetual , because it hath no certain time of duration . III. A Shrub . A Shrub is a Plant of a mean thickness and height amongst those that are woody , whose Stem is manifold by nature , and which by cutting off its Shoots or Suckers , is easily changed into the nature of a Tree . IV. An Under-shrub . An Under-shrub is the least of woody Plants in height and thickness , having a lasting Stem or Stalk , which sometimes is single , and sometimes manifold like Brushwood , with a small and sometimes manifold like Brushwood , with a small and slender Leaf , as Rosemary , Lavender , Southernwood , &c. V. An Herb. An Herb is a Plant which consists only of Leaves , as Harts-tongue , &c. or sometimes of a Stalk , but perisheth away every year , and is not woody till after it be dried . VI. The Diversity of Plants may be deduced from several Heads . The variety of Plants is assignable either to the Soil whence they grow ; or to the Pores or channels through which their Alimentary Juice is conveighed ; or to their Structure or Figure ; or to the Fruits they bear ; or to their differing Qualities , or lastly to the Changes and Alterations to which they are obnoxious . VII . From the Place of their Growth . With regard to the place of their growth , some are upon Rocks , Walls , the Tops of Houses , when the water falling in abundance , doth leave some limosity upon those places . Some grow upon other Plants , or upon great Stones ; as Moss which grows upon the Barks of Trees ; and Touchwood which sticks to the Oaks and Nut-trees . Some proceed from the rotten Wood or Roots of Trees , as SCALIGER tells us , that Bearsfoot doth , Exercitat . 140. Others grow upon Dunghills , as Sowthistle , which Hogs delight in , and other such like . Some grow upon the Bodies of Living Creatures , as is related of a Shepherd , who had a little Plum-tree or Sloe-bush growing out of his Breast , because falling by chance upon one of them , he had forgot to pluck out one of the thorns of it which stuck in his Breast , and afterwards sprouted out thence . VIII . From their different Pores . Plants are also distinguisht by their Pores ; for the Alimentary Juice , according to the different structure of the pores it passeth through , acquires a different Temperature and Qualities . According to which different disposition of the Pores , some Plants are more early in their coming forth , and others later . For those that want a Stalk , or have only a short one , are more slowly nourished : others that have a more favourable Texture of their Pores , and the Fibres of whose Stems are more yielding , grow sooner , and to a greater Size and Bulk , especially if the Climate and Soil agree with it . Thus Gourds and Sallows do in a little time encrease to a great Bulk ; whereas on the contrary Oaks and Pine-trees , by reason of the straitness of their Pores , are as slow in their advance . And therefore because the Fir-tree , and others of that nature consist of looser and more open Pores than the Ebone-tree , and other-like hard and compact woods brought from Brazile , they are easily bent , but not without difficulty pulled asunder : whereas the parts of these latter are very Brittle and break upon the least bending , because of the very close and compact texture of their Parts . It is also from this various disposition of the Pores , that the same Rain furnisheth nourishment to such a vast number of different Plants , because it is changed according to the difference of the Soil , and the variety of the Pores doth diversly affect the said moisture and alter it , so as to become the proper nourishment of such and such a Plant. To which may be added , that the Juice which is drawn from one part of the Earth , doth furnish it with other Alimentary Particles , than another doth . IX . How the Juice of the Earth ascends in Plants . But if any one ask , how the Juice ascends from the Root , into the wooden Fibres ; they may take this for an Answer , that the Juice ascends in Plants , after the same manner as water mounts up into those Pipes that are made use of in the Experiments of a Vacuum ; that is to say , because the weight of the Air drives them upwards . Which effect of the Air is much encreased by the Circular Motion of the Earth , for it being the Property of that Motion , to drive all the most agitated parts far from the Center ; accordingly it also drives all the Juices of the Earth into the Pores of the Plants that are more agitated than the Air ; whether this their agitation proceed from Subterranean Fires , or from some particular fermentation in the out parts of the Earth . X. From their Figure . A great variety likewise ariseth among Plants from their Structure or Figure ; for some are low , as Onions and other creeping Plants . Others grow to a vast Height , as Cedars whose height and thickness is wonderful ; Historians mention one that grew in Cyprus to have been 130 foot high , and of that thickness that 3 men could scarcely fathom it . And so likewise the Fir-tree , Abies , which takes it latin name from Abire , that is , to go away , because of the vast height it oft riseth to . Historians tell us , that in the Ship , that by command of the Emperour CAJUS brought the Obelisk , placed in the Vatican Circus or Piazza , from Egypt , there was a Fir-tree , whose Trunk was as much as 4 men with their stretched-out-arms could compass . Some grow of a round Figure , as Puffs , others in the form of an Umbrella , as Mushromes . Some have the strings of their Barks extended long-wise , others a-thwart and Cross-wise . Some naturally have crooked Stems or Trunks , as the Vine , others strait and upright , as Reeds and most Trees . XI . From their Fruits . Plants are also differenced according to their several Fruits : and thus some are called Glandiferous or Acorn-bearers , as the Beech , the Oak , the Cork-tree and the Chestnut-tree , which latter , for thee goodness of its Fruit , excells the rest of the Trees of this sort . Others are Coniferous , bearing a Fruit like a Cone , that is smaller at one end and like a Top ; such as is the Cedar-tree , which formerly grew in great abundance upon Mount Libanus , but are reduced to 24 only . So also the Cypress-tree , and the Firr , tho' this is reckoned amongst the Resiniferous or Rosin yielding Trees . Others are Pomiferous , or Apple-bearers , as the Apple-tree , the Citron-tree , which is always green , of a most fragrant odor , and its fruit of a golden Colour ; the Orange and Lemon-tree , the Pomegranate-tree , so called from the great number of grains of Seed which its Fruit doth contain ; and the Apricot-tree , whose fruit , from the golden colour , were by the Greeks called Chrysomela or Golden Apples . Book . 1. Part. 7. Chap. 1. G. Freman I. Kip. Sculp To the Right Worshipfull Sr. Denis Hampson of Japlow in Buckingham Shire & of Bradwell in Oxford Shire Baronet This Plate is humble Dedicated by Richard Blome XII . O● Nutbearing , Berry bearing , or Coabearing . Of Fruit-bearing Trees , some are Nuciferous or Nut-bearers ; as the Nut-tree and Almond-tree , which have their Fruit contained in hard Shells ; others Bacciferous or Berry-bearers ; as the Plum-tree , the Olive-tree , the Mulberry-tree , and the Cherry-tree , which bear a Fruit that consists of a more soft and moist flesh , and cover'd only with a thin Skin : Other Siliquiferous or Pod-bearers ; as Cassia , Tamarinds , &c. because their Fruit is contained in Cods or Husks , or in a Juicy-shell , of a longish figure . XIII . From their various Propensions or Inclinations . There is also a considerable variety in Plants , from their different Inclinations : For some of them have an Antipathy against others . Thus the Vine , and Cabbage or Coleworts , cannot endure the Neighbourhood of one another ; and so likewise the Olive-tree and the Oak , the Bay-tree and the Vine , the Olive-tree and Coleworts , the Nut-tree and the Oak are at variance . Not by reason of any inborn Antipathy , as some do imagine ; but because when those Plants stand near together , they rob one another of sufficient Aliment , because they are nourished with one and the same kind of Juice ; which being taken in by the stronger and more vigorous Plant , the other must needs languish . And on the contrary , those Plants are said to be friendly to each other , which are nourished by different Juices ; so that what is necessary for the Aliment of the one , is never touched by the other . And herein doth the Antipathy and Sympathy of Plants properly consist ; according to what we have more largely explained in our History of Nature , concerning Plants . Thus the Fig-tree and Rue thrive in the Neighbourhood of each other , because they delight in a quite different sort of Nourishment ; and not by reason of any Consent or Friendship , but by substraction of the contrary Aliment , which the one draws to feed its sweet-scent , and the other to feed its bitterness . And on the contrary , Rosemary loseth part of its sweetness and savour , when it grows in the Neighbourhood of the Bay-tree or Lavender ; because both these Plants delight in the same Alimental Juice , and are like Robbers one to another , whenever they stand close together . XIV . From Artificial Transmutation . A Diversity is likewise to be found in Plants that springeth from Transmutation ; as when Plants are made more fair and beautiful , by the Art and Industry of Gardiners . Thus that vast variety of Gilly-flowers , proceeds from this Cause . And in like manner there is now the Calathiana , a kind of Violets , not only of Blew colour , but also White , Red , and of a mixed Colour , by the Curiosity of Ingenious Florists . For the Industry of Gardiners doth conduce much to the variety of Plants ; according to what Virgil tells us in his First Book of Georgicks : I have seen many would Anoint their Grain , With Nitre first , then Lees of Oil would spread , That the Husk swelling might enlarge their Seed ; Then with lent Fire ripen the tender Grain . XV. From the Negligence and Carelesness of Gardiners , &c. And on the contrary , by the Negligence of Gardiners , or some fault in the Soil , Plants degenerate , and are turned into others not so good as themselves : So Wheat turns to Darnel , Basil into wild Thyme , Barley into Oats , Turneps into Rhadish , as SENNERTUS assures us ; Water-mint into Spear-mint ; the Blak-Vine into Briony , Spelt into Wheat , and Wheat into Spelt . It is also a common Observation , that if the same Seed be for several years together sown in the same Ground , it will degenerate ; according to that also of VIRGIL : When oft the fairest Barly i th' same Ground we sow , Darnel instead thereof , and blasted Oats do grow . The same happens almost to all Plants , when they are transpos'd to different and disagreeing Places : As when Herbs that grow in Pools and Running-water , are removed to the Tops of Hills , or Champion-ground . Thus if the Water flag should be transplanted to Hilly-ground ; or the Seed of Lettice , Cucumber and Cabbage , to a Sandy place : And on the contrary , Heath , Fern and the Thorn-bush , to moist and Marshy-ground ; they would soon degenerate to other Plants , and cease to answer to their Names . CHAP. XII . Of the Propagation of Plants . I. Plants are propagated by Sowing , Setting , and Grafting . PLANTS may be propagated or multiplied several ways ; as either by Seed , or by a Sprig cut , or pluck'd off from the Stock and set into the Ground ; or by Graffing . II. The Soil is to be prepar'd for the Reception Seed . But before that the Seeds of Plants are committed to the Earth , the Soil must be duly prepared ; that is , it must be turn'd up by the Plough , or dug with a Spade , or cut with a Weeding-Hook , or broke with a Pick-ax , and the Clods broke with a Harrow or Rake . All which pains is taken , partly to root out the Weeds and unprofitable Herbs ; and partly to make the Ground more light and loose , that the Seeds or Slips may the more easily take root in it , and spread their fibres far and near , and by this means attract a more copious Aliment . III. The fittest time for Sowing . Nature directs us to the most proper Seed time , viz. when the Seeds have attained their full growth and maturity ; or , when by the opening of their Husks they fall to the Ground ; or by the contraction or shrinking of them are thrust out ; or by the Down that grows about them , they are by the Wind scatter'd up and down through the Air. IV. Of Propagating Plants by Slips or Sprigs . The other way of propagating Plants , is by setting a Sprig or Slip , whether cut or pluck'd quite off , or whilst it sticks yet to its Mother , thrust down into and cover'd with the Earth , till it hath taken root . These Sprigs or Slips may be bigger or less , according to the Nature of the Plant. For some are set from a greater Branch , others from a Slip , others from a Twig , and others from a Shoot . V. What kind of Twigs or Sprigs are to be Set. The Twigs , Sprigs or Slips that we would set , must be fresh and green : Yet VIRGIL tells us , that the dry Sprigs of an Olive , if set , will grow notwithstanding : An Olive Branch , tho' dry , will shoot , If set i' th' Earth , and spread its diving Root . It is also observable , that the more tender any Plants are , the later must their Sprigs or Slips be set , that is , about the middle or latter end of the Spring , in these colder Climats : And if the Weather permits , they must be watered as soon as set ; I say , if the Weather permits ; for in cold Weather , too much Moisture is apt to spoil them . And so also , if it be a clear Sky , and the Sun shine hot upon these new set Twigs or Slips , they must be shaded , lest the heat of the Sun-beams should scorch and dry them up . VI. What Graffing is , and how it is performed . In the Second place , Plants are propagated by Graffing : Now Graffing , being taken in the largest Sense , is such an application of a Graff or Bud to its own Stock or Branch , or to that of another Tree , whereby they become united and grow together . Now forasmuch as the most part of the Sap , ascends between the Inner Bark and the Wood , the whole Art of Graffing consists in this , that the Inner Bark and Wood of the Stock and Graff do answer exactly one to another ; or that the Scion or Bud be so applied to the Stock or Branch , that the inner and outward Bark both of the Stock and Scion may so exactly answer , and make one continued Body , and one Even Surface , that the Juice may readily and freely flow from the Stock , to the Graff or Bud. VII . What Graffing is , and to what end it is done . The End of Graffing , is to meliorate the Nature of Plants , by changing them into others . For since there is a twofold Concoction of Food , the one in the Stock , and the other in the Graff ; it cannot be otherwise , but that the Alimental Juice , by these different Strainings , must be the better prepared , and partake of new Qualities : And therefore we find , that Plants by Graffing , do not only bring forth larger , but also better Fruit , than the Tree doth from whence the Graff is taken : And it is found by Experience , that the Tree which grows from the fruit of a Graffed-tree , or the Sprig thereof set in the Ground , doth bring forth less and meaner fruit , than doth the Graff it self , from whence it was taken . Hence it is also , that we see one and the same Tree laden with diverse Fruits ; yea , and the same Fruit having a different taste , smell and colour , in one part of it , from that it hath in the other , as also late Ripe Fruits to become early Ripe , and such as are Green to become Red. VIII . There be three ways of Graffing : The First is Infoliation . There be three ways of Graffing : The first is within the Inner Bark , when the Graff is put in between the Wood and the Bark , and is ty'd fast with a Thread or small Cord. This way of Graffing is most proper for Trees that have a thick Bark , and abound with Sap : Because the Bark draws abundance of fat moisture out of the Earth ; such as are the Fig-tree , Cherry-tree and Olive-tree . Wherefore , he that would graff after this manner , must have a little wedge , made of some very hard VVood , and drive it in between the Bark and the VVood gently , so as not to rend the Bark , and in that aperture must graff his Scion . This way of Graffing was by the Ancients called Infoliation , and is still in use with us , where the Bark is thick , and a small cleft to graff in cannot so well be made . IX . The second way of Graffing is in a The second way of Graffing is , by means of a Cleft made in the Stock , into which the Scion is put , so as that the pith of the one may be joyned with the pith of the other ; and then the slit must be stopt up with Clay , and bound up with the Bark and Moss . This way of Graffing is made use of in those Trees that have a thin Bark , and are of a drier Complexion , their Moisture living not much in the Bark , but within the Pith ; such as are the Citron-tree and Vine . And this way is properly call'd Graffing , which must be quickly done , lest the Scion which is to be graffed , should by delay become over dry . X. The third way of Graffing is called , Incculation . The third way of Graffing is done by Inoculation , wherein the Bark of the Scion that is to be Inoculated , is so joyned to that of the Stock , whence the like quantity of the Bark is taken , that the Buds and Eyes of the one , may exactly answer to the Buds and Eyes of the other . For there is a certain fat clammy Moisture between the Rind and the Stock , by which the strings of the Scion are glewed and joyned to the strings or fibres of the Trunk or Stock . XI . All other ways of Graffing are reducible to these three . There be other ways of Graffing ; as that which is done by Emplastration or Plaistering , whereby some part of the Bark of a Scion , with its Buds , is put into the slit of the Bark of a Stock , and the Bark of the Stock so closed again upon it , as that no mark of the slit remains ; and afterwards is plaister'd and bound up . Another way is by Boring , when the Graft is put into the Hole that is bor'd into the Stock . There is also another way , which the French call En perche , when many little Sprigs with their Buds are graffed into a perforated Perch . But all these , and other such like , are reducible to the 3 ways already mention'd : Forasmuch as all of them agree in this , that the strings of the Sprig or Bud , must agree and answer to the strings of the Stock whereinto they are graffed ; and that by this mixture or coalescence , the wound may be cover'd or grow together , leaving the Bark somewhat rough in that place . They agree also in producing the same effect , that is , the melioration of Plants , by reason of their Coction , both in the Stock and in the Graff , where the Alimentary Juice is further prepar'd and purified . XII . The Nature of the Graff becomes changed in process of time . By this Art of Graffing , not only Trees of the same Nature are mingled , as it were , and united ; as Apple-trees with Apple-trees , Pear-trees with Pear-trees , &c. but also any other Trees , tho' never so different in Nature . Yet they who would have their Graffs to thrive , had best set them on a stock of the same kind ; because the strings of Plants that are of a like Nature , do better agree together , and have their pores and passages dispos'd in one and the same manner . However it is observ'd , that in process of time the Seed of the Graff doth very much degenerate : The Reason whereof is , because the Seed proceeds from the Matrix or Pith of the Tree , which being the product of the wild Stock , by degrees affects the Seed , and makes it to degenerate . XIII . What Pores of the Stock correspond or agree with the Pores of the Graff . Some , it may be , will question how it comes to pass , that the Scion unites with the Stock , seeing that their pores do not answer to one another , but differ in their situation and figure . To which I Answer , That it is not necessary that all the pores of the Stock should agree with those of the Graff , or that every one of both their strings should be united ; it being sufficient if the greatest part of them answer to each other , and give way to the passage of the Alimental Juice . As we see that 2 pieces of Glass laid upon one another , tho' all the pores do not exactly agree , do notwithstanding transmit the Light. For we must not imagine , that the Graff is joyned to the Stock , into which it is graffed with the same firmness and evenness , as its own connatural Parts are ; since it hath often been found , that in an Old tree , the Part that hath been graffed on it , hath been torn off by a strong Wind , tho' for many years together , it had been united to it no otherwise , than as if it had been a Connatural part of it . For in order to the conveyance of the Juice from the Root to all the parts of the Tree , it is not necessary that all the Pores should exactly agree ; because we find that the Earth affords Nourishment to Plants , notwithstanding that their Pores do not every way agree with those of the Earth . And tho' we should grant , that such a conformity of Pores should be necessary for the common Nourishment of the Stock and the Graff ; yet I see no reason , but that the same conformation may be wrought in process of time , because the Sap that comes from the Root hath power of making to it self Channels and Passages , as hath been hinted before : For the Fire , by the motion whereof it is driven upwards , thrusting it forwards , helps it to make these Passages and Channels for it self . XIV . In Graffing , many things are to be observed To the end that Graffing may be duly performed , we must take heed , First , That the Scion to be Graffed , be not too soft or tender ; for then , because of the tender texture of its strings , it will not be able to bear the hardness of the Stock into which it is Graffed . Neither on the other hand must it be too dry ; for in that case it will not unite and grow into one with the Stock . Secondly , That the Graff be taken from a fruitful and good Tree , and , as near as may be , of the same kind ; as the Graff of an Apple-tree , upon the Stock of an Apple-tree . For if they be of different kinds , the Fruit thereby becomes spoiled ; as if one should graff an Apple-tree upon a Willow or an Ash , the Apples will be found like to a Crab or Wilding . Thirdly , That the Scion be without any delay graffed , lest the Air entring into the Pores , should hinder their growing into one . Fourthly , That the Stock be duly slit , lest the slit being made too deep , should hinder the closing of it up again . Fifthly , That the Graff be so cut , as that the Woody part of it may joyn with the Wood , and the Bark of it with the Bark of the Stock . Sixthly , That the Stock on which we intend to graff , have stood in the ground for some Months , lest in case it should not be well rooted , it might not furnish Sap enough to feed its young Nursling . Seventhly , The top of the Scion is to be cut off , that by beating back the Juice it may swell and grow bigger . Eighthly , That when the Graff is put into the slit , the place must be pasted about with Wax and Gum , or with Clay and Moss , to keep out all external Moisture Ninthly , That a fit Season of the Year be observed ; which is , after the Winter Solstice , and after the Blowing of the West Wind ; that is ▪ from the 7 th of February to the Spring Solstice . Tenthly , It is also to be noted , that some Trees are altogether unfit for Graffing ; as the Oak , the Fir-tree , and other Resiniferous-trees ; because the Oak , by reason of its hardness , will not be slit ; and when slit will not grow together again : And Resiniferous-trees , because of their clammy Liquor , have their pores so obstructed , that the Juice cannot be readily conveyed to the Graff . And , Eleventhly , That the parts of the Scion may retain the same situation when graffed on the Stock , as it had before it was cut off from its own Tree : As by Example , If the Graff , before it was cut off from the Tree did lean towards the South , in Graffing it must likewise be turned that way . See the Natural History concerning Plants . CHAP. XIII . Of the Colours of Plants . I. What Colour is . AS to our present purpose , it is sufficient for us to know , that Colours are nothing else , but certain modificatious of Light , caused in Bodies by the different disposition of their Surfaces . Whereof we have a manifest proof in cutting of an Apple , the inner parts whereof appear white at first ; but soon after turn yellow , and lastly become of a brown Colour , according as its outward parts are more dried . Such a modification of Light does especially belong to Plants , since that all their parts are ting'd with some Colour or other , and are remarkable for their whiteness , yellow , red Colour , &c. yea , and sometimes are successively green , yellow , red or white , according as the Texture of the little particles , whereof they are compounded , is changed , and the disposition of the surface alter'd . The Matter therefore in question is , What that is in Plants that makes the Light reflected from them to acquire such and such Modifications , which impress these Sensations on the Eye . II. Why the Roots of Plants are commonly White . The Roots of Plants are generally white ; because they contain much Spermatick matter , which being comprest by the Earth that lies round it , and bindred from flying up into the Air , is forced to return into the substance of the Plant ; where , by the warmth of the inner part of the Earth , it is concocted anew , and being coagulated into a kind of frothy Substance , doth reflect the Light on all sides , and so produce a white Colour . For the Reason why Snow and Froth are white , is , because they consist of little round Bodies , which from every point reflect the Sun-beams . For the smaller these Bubbles are , the more white doth the Subject appear ; for seeing that every one of them , from all their parts reflect the Light , it must needs follow , that the more there are of these , within that determinate Space , the more Rays will be reflected ; that being a white Colour , which comes nearest to the Nature of Light. Hence it is that Liquor , tho' it be of never so black a Colour , turns white as soon as it is turned to Froth ; as appears in the froth of Ink ; and therefore it is no wonder that the Root of a Plant being cover'd with Earth , appears white , because it consists of clammy Humours , which by the warmth of the Earth is easily turned into little round Pellets . III. For the same Reason a Lilly is White . And it is for the same Reason that a Lilly is white ; because the surface of it riseth into Bubbles , from all the several parts whereof it reflects the Light. For in a Lilly , the Alimental Juice is very exactly percolated , and its substance being well concocted , turns to round pellets or bubbles . In like manner as we see , that our food becomes turned into Chyle , when after digestion in the Stomach , it is resolved into little round Bodies ; which Chyle afterwards in the Breasts becomes turned into Milk. The Reason therefore of the whiteness of a Lilly is , because the little Skin wherewith its Substance is covered , consists of round Pellets , as is manifest to those that look upon it through a Microscope . IV. Whence the Red Colour that is in Flowers proceeds . Some Flowers are Red as Roses , and Tulips , because their parts are so disposed that the Globuli of the Second Element , which constitute Light , are by them more swiftly whirl'd about than they move to right lines . Wherefore whensoever the light in any Body is so modified , that its Aethereal Globuli are more swiftly turned round , than they move right forwards , than the surface of those bodies from whence the Light is reflected appears Red. Thus a white Flame , when smoke comes to it , turns Red. The Sun through a Mist , the Planet Mars by night , the Moon in the Clouds , a glowing Coal , and many other things are Red. Some Fruits therefore as Cherries , Grapes , Mulberries , &c. are of a Red Colour , because the Juice whereof they consist , having never been exactly strained , and therefore containing several Particles that are not sufficiently digested , makes those Fruits to appear of that colour , by reflecting the Light accordingly . V. The Cause of the Yellow Colour that appears in the Leaves of Plants . A Yellow Colour is peculiar to the Leaves of Trees and Fruits , whilst they are ripening ; because having lost the moisture , which gave them their Greeness , they now contain nothing but such a Juice , as is well strain'd and prepar'd ; which makes their outside to rise into greater Bubbles or round Bodies , which because they leave great intervals between them , must needs cause a great variation in the Reflexion of Light. For if you look upon Yellow Bodies with a Microscope , you will find them wholly rough and uneven , and full of innumerable protuberances ; by which means the Light reflected from them becomes so modified , that the whirling about of the Globuli is somewhat more rapid than their motion to right lines . For the Yellow Colour mediates betwixt White and Red ; which may be demonstrated to the Eye from the mingling of Liquors ; for if you mix any White and Red Liquor together , the result will be Yellow . And the same will be if we twist a Lace or Girdle of the smallest White and Red Threads . VI. The Blue Colour is peculiar to some Flowers . Blue is the peculiar Colour of some Flowers , because the Juice that nourisheth them , is in such a manner concocted and percolated , that from thence such a degree of Darkness and Transparency results , as produceth such a Reflexion of the Rays , that the Globuli of them , have more of a straight , than of a circular motion . For a Blue Colour comes between a Black and Red ; as appears in the Air , which in the day-time looks Blue , by reason of the Bodies that are tost up and down in it , and reflect the Rays to us . And forasmuch as these Rays are but few in number , and the Shades many , therefore it is necessary that the Heaven should appear of a middle colour between Black and Red , that is of a Blue , in the day-time . This will be made manifest to us by mixing a very fine Red Powder , with another that is Black , or by laying a black Glass upon a red Glass , and looking through them , for by either of these ways we shall find a Blue Colour produced . VII . The General Colour of Plants is the Green Colour . The most common colour belonging to Plants is the Green , which is observed in all of them as well at their springing out of the ground , as in their growth . The cause of this Colour is the abundance of moisture that is in Plants , when it is but slightly strained and elaborated . Hence it is that those Herbs and Leaves have more of this Greeness by how much the more they abound with moisture , and less of it , as the moisture is less , and better digested . This Green Colour is mixed of Yellow and Blue ; which may be made out by several experiments ; for if we look upon the Sky , which is Blue , through a Yellow Glass , it will appear Green ; so likewise if we lay a Blue Glass upon a Yellow , and look through it upon any Object , it will appear Green : and so we shall find that by mixing a Blue and Yellow Colour'd Liquor together , the mixture will be Green. VIII . What is the Cause of that variety of Colours that is in Tulips . There be many Flowers that are of divers colours , as Tulips ; which cannot proceed from any other cause , but the different concoction of the Alimental Juice ; because the matter is better preserved and purified in the great Bulbous Roots of Tulips ; and better strained through their long and thick Stalks , wherein also it is the better concocted and distributed . But yet it cannot be expected that Tulips every year should retain the same colours ; for the temper of the weather changing considerably every year , it cannot be otherwise but that thereupon a different concoction , preparation and distribution of the Alimental Juice must follow , and consequently the colour also be changed . Yea , we find sometimes that Tulips , in one and the same year do change their colours , and that such as before were White , turn Red , and the Red , White . When streaks of a Purple Colour appear in a white Tulip , it is a sign that the thicker parts of the Juice do cause an obstruction , whereby the free motion thereof to the utmost parts of the Flower is hindred . IX . Why Leaves and Flowers change their Colours . And the same may be said of the Leaves and Fruits of Trees changing their colours . For the Leaves are Green at first , by reason of the plenty of Moisture , and the Juice that is not throughly elaborated or prepared ; and from this Green Colour they are changed into a Reddish , and lastly from that to a Yellow ; because the Moisture , which at first was the cause of the Green Colour , being diminished gives way for the Red Colour to succeed , and afterwards flying all away , they are thereby changed into a Yellow Colour , till at last extream driness turns them White . In like manner Fruit , as it comes to be ripe , quits its Green Colour ; which becomes changed into some other ; because the Juice , which before was raw , as wanting due preparation , when the Fruit grows ripe , becomes depurated and percolated to perfection : so that the contexture of parts being by this means changed , it is no wonder that the Fruit loseth its green Colour , and becomes Red , or Yellow , or of a Colour mixt of both . CHAP. XIV . Of the several Tasts of Plants . I. What Tast or Savor is , and wherein consists . BY the word Tast or Savor , we understand that virtue in Bodies , whereby they are able to produce in us the sense of Tast . Which virtue consists in the Particles of Bodies , inasmuch as they are sufficiently diluted , subtil and agitated to enter the pores of our Tongue , and to move those Nerves , wherewith the Instrument of Tasting is is furnish'd . For tho' Taste be properly in the Mouth , and that the Tongue or Palat is formally that which tastes ; yet it may be said , that the things themselves , which are taken into our Mouths , are the Causes of the said Taste , and according to their several magnitude , figure and motion , do produce different tastes or savours . So that things savoury , or endued with taste , are said to be such , only because they move the Filaments of the Nerves of our Tongue in such a manner , as is necessary to produce in them the sense of Tasting . And forasmuch as sensible Objects cannot affect those Nerves , except they be endued with a certain motion , figure , and magnitude ; therefore to these three we must assign all the diversity of Tastes or Savours we meet with in any Objects . II. Why some Fruits are insipid . This is evident from the Insipidness we sometimes find in Plants , and their several parts . For if we enquire into the Reason why some of them are Insipid , and do not affect the Tongue or Palat , we shall find the Reason to be , because they do not furnish such Particles , as by the assistance of Moisture can enter the Tongue , and strike its Nerves . Thus we find , that when Grapes are first knotted , they impress no affection upon the Tongue , and do only touch the outside of it , without entring its pores ; because the particles of Juice , which come up from the Root to compose them , do stick close together , and are not easily separated . Daily Experience also teacheth us , that Water is in a manner wholly insipid , because its Particles are so thin and subtil , that they can affect the Organ of Taste very little or nothing . In like manner Air is void of all Taste , because it floats only upon the Spittle , and the Parts of it , by reason of their extream lightness and subtilty , can make no impression upon the Tongue . III. What is required to make a thing sapid or savoury . That a thing be savoury , it is necessary for its Parts to be separated from each other , that so joyning themselves to the Spittle in our Mouths , they may variously affect the Nerves of our Tongue . Now this is done by means of Heat , the Property whereof is , to resolve Bodies , open their pores , and to make a ready way for the Moisture to enter . Whence it is , that when Fruits tend to Maturity , by means of the heat of the Sun , reconciling their driness and moisture together , various Tastes are imprest upon them , according to their different degrees of Maturity : First , an Astringent taste , then a Harsh taste , afterwards a Sowr , and last of all , a Sweet taste ; and if the Heat be too great a smart or biting , and bitter Taste . IV. Why Sloes have an Astringent taste . An Astringent taste we find in all unripe Fruit , and more especially in Sloes , which with great harshness and astringence affect the Tongue , as if they prick'd it with Pins and Thorns ; because they consist of keen and stiff Parts . For the Juice whereof they consist being not well strained , contains many stiff and inflexible little Bodies , such as are the particles that compose Salt ; so that it is no wonder that they exasperate the Tongue , and astringe or contract the same . V. Onions and Pepper have a smart and biting Taste . In Onions , Ginger , Pepper , Mustard-seed , &c. we perceive a smart and biting Taste ; because the particles of these Objects do prick the Tongue , and cause the same Division in it , which Fire would , if applied to it . The Reason is , because they consist of long , thin , and stiff particles , which make the Bodies whereto they belong dry and stiff . But being boil'd in Water , they lose their Acrimony ; for that the Moisture penetrating them , dissolves their Salt and other smart little Bodies , and opening their pores , carries them away . Yea , some of these may be so macerated or soaked , as that by quitting all their Biting and Harsh particles , they may become sweet , and at last insipid . VI. How Sweetness is produc'd in Ripe fruits . We meet with a Sweet taste , almost in all Ripe Fruits , which with great smoothness and evenness affect the Tongue . For in Ripe Fruits , by the continual heat of the Sun , the Alimental Juice is very exactly and throughly strained , and the particles that before were entangled , are resolved , by which means they readily enter the pores of the Tongue , and affect it with a pleasing Titillation . This Taste is most pleasant and grateful to young Children , the small strings of whose Nerves are more fine , small and subtil ; but is not so acceptable to those who have a thicker Texture of Nerves , being affected by what is acrimonious , and therefore look upon a sweet Taste , to be unpleasant . VII . A Sowr taste proper to Limons . A Sowr taste is found in Limons , Sorrel , and the like , which do prick and cut the Tongue . It is felt somewhat in the same manner , as a smart or biting Taste , saving only that Sowr things are accompanied with a sense of constringent Cold. The Reason is , because this Savour consists in subtil and sharp Particles , which do easily penetrate the Organ of Taste , and pierce it like so many Thorns . And therefore we must conclude , that these Bodies consist of longish and stiff particles , somewhat like Needles : Which we shall readily admit , if we consider that all Fruits , before that they come to their full Ripeness , are of a Sowr taste ; which could not be , if that Taste did not include something that is common to them all . Now we can meet with nothing that is common to them all , except that Disposition of Parts , seeing they consist of an Earthy Juice , which did cleave to the long and thin pores of the small Twigs , whence these Fruits do grow . VIII . Whence that Bitterness that is observed in Rotten Apples , doth proceed . A Bitter Taste is perceived in some rotten Pears and Apples , &c. in the eating whereof the strings of the Nerves are unduly affected , and unpleasantly vellicated . For Pears and Apples , when they begin to putrifie , get rough , uneven , and prickly particles ; because then the more subtil and refined particles fly away , leaving none but the grosser and thicker behind them . For Putrefaction is such a Resolution of Parts , by which things become worse than they were before . Hence it is that they who drink Wine , immediately after they have eaten a tainted Apple , and tending to putrefaction , do perceive a Bitter taste ; because the Wine mingling it self with those putrid particles , conveighs them to the inmost pores of the Tongue . This Bitterness is sometimes occasion'd by too great Heat , when it is continual , and acts for a long time together upon Fruit. So that if Fruits , after their full Maturity , should continue long upon the Trees , it is not to be question'd , but that by being too long expos'd to the Heat of the Sun , their particles would become so rugged and twisted , that none would be left in them , to affect the Tongue with a Sweet taste , but would all exasperate and bite it . A confirmation whereof we have in Flesh , which by too great heat of the Fire becomes scorched and burnt , and by this means acquires a Bitter taste , as doth also the Crust of Bread that is burnt , by being baked in an over-heated Oven . IX . Mint Tastes are found in some Fruits and Plants . Neither are these simple Savours or Tastes only found in Plants and Fruits , but also compound Savours ; as the sweet and sowr Taste which is commonly found in Fruits , that are not yet arrived to the utmost degree of Maturity : As when some of their parts are longish and stiff , which prick the Tongue ; whereas others , more smooth and pleasant , softly flowing over the Nerves of the Tongue , do only produce a kind of pleasant Titillation on the Tongue . Another Taste is that which is Harsh and Sowr , which is that we perceive in those we call rough Wines . Another , Sowr and Astringent , which taste is found in the Juice of unripe Grapes , called Verjuice ; the Cause whereof is this , that the particles which constitute the Grapes , are by the Heat of the Air separated from each other , and so acting independently , they produce both a sowr and astringent Taste . CHAP. XV. Of the Odour or Scent of Plants . I. Wherein Taste and Scent do agree . ODours , or Scents , have some affinity with Tastes , as being much deriv'd from the same Principles . For as Taste consists in those little Bodies which penetrate the Tongue and Palat , and diversly affect them , according to their various Magnitude , Figure and Motion ; so Odour consists in those particles which , flying in the Air , do enter our Nostrils , and variously affect the same . There is also another Resemblance between them , in that they are in a manner denominated alike , and are distinguish'd by the same Differences . For as Tastes or Savours are chiefly distinguish'd into Astringent , Smart or Biting , and Sweet : So of Odours or Scents , some are sweet ; as in Musk , Roses , Orris , &c. Others smart and stinging ; as in Brimstone : Others , stinking or nasty ; as in Bugs , and some Excrements : Others , sharp , as the Scent of Spike , &c. II. How Savours and Odours differ . But yet Scents and Tastes differ in this , that they do not consist in the same parts , nor affect the Organs after one and the same manner . For the particles that are productive of the sense of Taste , are moist ; whereas those that cause Odours , are very dry and subtil . They differ also , in that a savoury Object cannot move the sense , except it touch the Organ ; whereas a scented Object strikes the Organ at a distance : So that the Tongue , by its Moisture , takes out the Taste from the Object ; whereas the Nostrils only admit the Odour transmitted to them from the Object . III. The Nature of Odours consists in the efflux of Particles . Whence we may conclude , that the Nature of Odours consists in the Efflux of certain particles ; which being diffus'd in the Air , enter the inmost parts of the Nostrils , and there affect some Nerves derived from the Brain . This we perceive in Frankincense cast upon Coals , and any other Perfume , which evaporates in the Air , and is disperst into innumerable particles . Whence it is that Hard Bodies , which in their compact Nature afford no scent , when put to the fire yield an Odour ; because , by the forceable motion thereof , some of those particles are set at liberty , and diffused through the Air. 'T is for this Reason , that Spanish Wax , which we make use of to seal Letters , doth yield a sweet Scent , when put to the fire ; as also that one Stone rubbed against another ; and Iron violently struck by another Iron do send forth a smell , which before this motion was not perceptible . From which Instances it may appear also , that the Odours of Flowers consists in an Exhalation or Evaporation of some of the parts of them , which is the more evident , because when that is gone , they remain void of all smell . IV. Why som● Bodies have no Scent at all . Neither must we conclude from hence , that all manner of Effluvia that proceed from Bodies , must impress the sensation of Odour ; for besides the emanation of particles , it is required that they move the Organ , and that in such a manner as is fit to produce this sense . For the particles of some Bodies may be so very fine and small , that they cannot sufficiently move the Organ : Thus we find , that neither the Air we draw in , nor the Vapours that arise from the Water , do excite any sense of Smelling in us . And on the contrary , some Effluvia are so gross , that they cannot reach the Organ of Smelling ; or if they do , are more apt to spoil it , than to produce any sense of Smelling in it . V. The difference of Odours depends on the variety of Parts , that flow from a Body . The Diversity of Odours , for the most part , depends on the same Principle , whence the variety of Savours doth proceed ; that is , from that difference there is in the magnitude , motion and figure , of those particles that breath out from Odorous Bodies . Which we shall more readily assent to , if we consider that there is some Analogy or Resemblance between savoury and odorous Objects ; and that those which agree in taste , do generally agree in smell also . Thus all smart and biting Things to the taste , are also observ'd to have a sharp and stinging Smell ; and bitter Things , to have a scent that partakes something of Bitterness . The Reason whereof is , because the same Particles , which being mingled with Moisture , produce Taste or Savour ▪ when exhal'd into the Air , and entring our Nostrils create the sense of Smelling . In like manner Bodies that are insipid , are commonly also destitute of scent . Thus Unripe Fruits , which have no more than an imperfect Taste ( and the same may be said of Flowers ) yield little or no Odour . I said , that it is so for the most part , because it sometimes happens , that there is not this agreement between the Taste and Scent in Objects ; as appears in Roses and Myrrh , which tho' they yield a pleasant smell to the Nostrils , yet have a bitter and unpleasant Taste . VI. Why Odou● are more perceives in Hot Seasons and Climat . Nothing more conduceth to the production of Odours , than Heat ; because it readily opens and resolves Bodies . For as we see that Smoak is excited by Fire , and that the more subtil parts of the Wood are carried up into the Air : In like mannner Heat divides the parts of Bodies , dissolves their Texture , and makes way for them to fly abroad . For we observe that fruits and flowers smell by so much the more , as their Juice is better prepared by Heat , and more throughly digested . A Lilly , the more it hath been concocted with a lasting heat , the more odorous it is . Sweet Woods and Spices , the hotter the Countries are they grow in , the more strongly Sweet-scented they are ; as appears in Frankinsence , Storax , Myrrh , Balm of Gilead , &c. Because the Juice of Plants in those Countries being exceeding well digested , is the more easily resolv'd into an Odoriferous breath or steam . Wherefore it is not to be wondred at , that the Plants that grow with us are not so odorous , as those that grow in Arabia , and other hot and dry Countries ; because the Concoction cannot be perfected for want of Heat , the superfluous moisture hindring the more dry particles from exhaling into the Air. Hence it is that most things , when dried , do acquire a stronger Odour ; and for the same Reason , Ripe Fruits are more and better scented , than those which are unripe . This proves all Odorous things to be hot , and that they suffer a continual efflux of their parts . And therefore those who would preserve the Sweet-scentedness of Musk , do wrap it in Cotton , which doth entangle its Effluvia , and hinder it from exhaling too fast . Accordingly also we find , that in Colder weather scents are dull and weak , because Cold stops the Pores of Bodies , and by keeping their parts at rest , hinder them from breathing out in Exhalations . VII . Flowers smell more sweetly at a distance . Flowers are observ'd not to smell so sweet near at hand , as at a distance , if it be not too great . The Reason is , because they who put the flowers to their Nostrils , do take in many Heterogenous parts of Herbs , which are mingled or entangled with those of the flower , but are not able to accompany them at any distance , but are soon scatter'd in the Air , or fall down , because of their Thickness . Hence it is that a small quantity of Civet smells sweet , whereas a greater quantity of it rather stinks , and offends the smell . To which we may add , that the Odorous Exhalations scatter'd in the Air , become there strained and defoecated of their more gross and impure parts ; as we see that Water mingled with Wine , doth dull and weaken the smell , as well as the strength of it ; and therefore it is no wonder , that an Odorous Exhalation , that hath been diffused through the Air , is more grateful , than that which we draw from the Body it self , apply'd to our Nostrils . VIII . Perfumes waste continually . Forasmuch as Bodies continually send forth some of their Particles , we must conclude they cannot but waste by degrees . So we find , that those Sweet-scents that are excited by Heat , do waste by degrees , and at last lose all their Odour . But those Perfumes which do not stand in need of this Excitation by fire , as Musk and Civet , do not so soon consume , but continue their scent for a long time , without any sensible diminution ; because the agitation of their particles is very moderate , and consequently but a few of them are dispersed or lost in the Air. CHAP. XVI . Of the Diseases and Death of Plants . I. What is the Death of Plants . FOrasmuch as Contraries discover each others Nature , and that Life and Death are Contraries , it will not be difficult to find out why Plants do perish ; and what the Cause is , why they cease to be nourished ; to grow and increase ; and to express it in one word , why they die . For seeing that the Alimentary Juice is the immediate Principle of Motion in Plants , and that their Life doth consist in the due distribution thereof by Heat ; it evidently follows , that the death or perishing of Plants must consist in the defect of this Alimentary distribution . II. How many several ways Death may happen to Plants . But because this Defect may proceed from many Causes , we will first speak of the Distempers to which they are subject , and shew how many several ways their Vital functions may be perverted . For besides the undue disposition of their Parts ; as when the Top of them is too much bended down towards the Earth ; when they are full of knots , and when the distribution of their Aliment is interrupted by callous Bumps ; when their parts are separated ; or when they exceed , or are defective : I say , besides these , there are many other ways whereby they may be brought to their end ; as by an undue Temperature , when they are either choaked with too much Moisture , or consumed by too much Heat ; when they are shut up and grow stiff , by extream Cold ; or wither and pine away , by too much Drought . The Ancients reckon up those Distempers of Plants , which are described as followeth . III. The effect of Rubigo or Mildew , upon Pulse and Corn. The Disease called Rubigo , or Mildew , in Pulse and Corn , is caused by a Dewy Moisture , which falling upon them , and continuing there , for want of sufficient Heat of the Sun to draw it up , doth by its biting sharpness , or Acrimony , scorch and corrupt the inmost substance of the Seed . This Disease also seizeth Vines ; but may easily be prevented by cutting them later in the year ; for the late pruning of them , makes them to flower so much the later , which generally prevents this Evil , because it seldom happens towards the latter end of the Spring . Moist and Dewy places are most subject to this Damage ; as Vallies and shut up places , where the Winds have not their free Course ; High ground being not subject to it . IV. What Roration is . Roration ; which is a distemper of kin to that of Mildew , is , when by too much Rain or Dew , Vines are blasted in their flowering , and bring forth only small and dwindling Grapes . And after the same manner other Plants are also spoiled , whilst they are yet young and tender , and not sufficiently rooted . V. Uredo . Uredo , happens either when the Sun with too great heat scorcheth the Leaves and Clusters of Grapes , before that the Rainy or Dewy Moisture is shak'd off from them ; or when Rain or Snow , lying upon the Tendrils or Buds of the Vine , is by Cold congealed to Ice . VI. Carbunculation . Carbunculation , is the blasting of the new sprouted Buds of the Vine , in the Spring time ; because then the Vines are in danger to be smitten , either by the excessive Heat or Cold. For by too much Heat , the Texture of the strings or fibres of the Vine become so dissolved , as that thereby the Native disposition of the pores becomes wholly changed ; and again by Cold it is so comprest , that the pores thereby are shut up , and leave no passage for the Alimentary Juice . VII . Vermiculation . Vermiculation is nothig else , but the Infestation of Plants by Worms ; which Evil is very incident to Apple-trees , Pear-trees , and Fig-trees . For as Men , and other Animals , are subject to breed Worms , so Plants are obnoxious to the same distemper , especially such as bear sweet Fruits , for such as bear bitter or sharp Fruits ( excepting only the Olive-tree ) are never troubled therewith . The manner of these Insects infesting Plants is declared to us by MALPIGHIUS ; It is yet more wonderful , saith he , that commonly , by means of one or two Eggs of a Flie left upon the Leaf of a Vine , Oak , or other like , the whole Leaf becomes drawn together like a Purse about the said Egg , and so withers ; yea such is the strange force of one of these Eggs , that not only the Leaf on which it is laid , suffers thus , but the infection being communicated to the Stalk of the Leaf , and from thence to the sprig that sticks to it , and the Leaves that are on it , the whole Branch is twisted and writhed together , and so withers and dies . VIII . Defluvium . Defluvium , is a distemper whereby Trees , in the Spring-time especially , lose their Barks , by reason of some sharp humour , that dissolves the Glew whereby the Bark was fastned to the Wood , whereupon they wither and die , being deprived of their Barks ; except this Decortication be not round , but long-wise only , for then it is no prejudice to the Plants , unless it be very great indeed , especially in Resiniferous-trees whilst they are budding . This Distemper also proceeds sometimes from too much Drought , which young and tender Trees not being able to bear , they do easily shed their Leaves and Fruit. IX . A Wound . A deep wound made in any Tree kills it , except the Firr , Pine and the Turpentine-tree , which delight in being wounded , and by this means become fruitful , whereas they were Barren before : for they abounding with a Fat and Clammy Humour , do void part of it by the wound , and thus being unloaden of some of their superabundant moisture , are afterwards better nourished , and advance more in growth . X. How Plants Perish by a Natural Death . Plants , as Animals , perish two several ways , viz. by a Natural or Violent Death . Plants die naturally when Aliment is no longer transmitted to them from the Root ; or when the Heat , that drives it upwards , and distributes it into all parts , vanisheth . For Heat , as is before mentioned , is the Principle of all motion in Plants , and therefore when that ceaseth , all the Functions of Germination and Nutrition must needs cease with it . XI . How many ways Plants may d●● a viol●nt Death . Plants , may divers ways die violently ; as first by a wound received ; whereby we are not only to understand Cutting , Slitting , Pulling off the Bark , Boring or Lopping off the Top , but also Bruising , half Breaking , Tearing , &c. For tho' a Plant , whilst it is pluckt up out of the Ground , doth not suffer any wound , yet because the Passages whereby it drew in its Aliment , are stopt up , the parts that are towards the top must needs wither , and those that are near the Root must be choaked with the too great abundance of it . XII . By overmuch Heat . Plants also perish by too much Heat , when the Earth is parched by the Heat of the Sun , and all the Moisture or Juice dried up . Whence it is that young and tender Plants , do much sooner perish than those that are grown ; for by reason of their tenderness the Heat more easily penetrates their Pores and opens them , and so makes way for the Juice to get out . Moreover their Roots being not so deeply fixed in the ground , when their moisture is exhausted , they cannot so readily draw in more , to restore the Alimental Juice , they have lost . XIII . By extream cold . In like manner Plants perish by great Cold , which is very destructive to them when it is excessive , and especially when it comes after great Rain ; for since the particles of Water , that insinuate themselves into the Bladders of Plants , do very much distend them , they can no longer contain themselves within their Bounds , but breaking out beyond them , do spoil the connexion of their parts , whence follows their total destruction . Accordingly we find that Plants by great Cold are parched and scorched , much in the same manner as if they had endured the most scorching Heats of Summer . We might now proceed to the answering of some Queries , as why Trees that are pluckt up by the Roots , and Branches that are lopt off from the Tree , do continue to live for some time , and do not die presently ; why Wild Trees are longer liv'd than those that grow in Gardens and Orchards ; but having fully spoken to these in the IX . Chapter of my Natural History concerning Plants , I thither refer my Reader . CHAP. XVII . Of Animals , or Living Sensitive Creatures . I. What an Animal i● , AS Nature proceeds from simple things , to those that are more compound , and from meaner and viler things to those that are more noble ; in like manner having now treated of Plants , that are a meaner kind of Living Creatures , I proceed to Animals , who besides the Life which they have common with Plants , are partakers of a kind of Sense and Motion . For so Animals are usually defined Living Bodies , furnished with variety of Organs , and endued with Sense and Motion . I say , Living Bodies , because they consist of such a contexture of sensible and insensible parts , that they cannot only recover the parts they have lost , but being excited by objects , can agitate themselves by various motions . So that the matter of an Animal are its Parts , or those Bodily Substances , that complete its Body , and are designed for the due performing of several Actions . And the due and becoming Union of these Parts , whereby an Animal , both in respect of his sensible and insensible Parts , viz. Fibres , Nerves , Passages or Conduits Valvules , &c. is so disposed , as to be able duly to exert his several actions , is his Form. What their Sense is , shall be declared anon . II. Wherein the Life of Animals doth consist . The Life of Animals consists in a due disposition of Parts , and intense Heat , whereby the Alimentary Juice is digested , attenuated , changed and agitated . For the Parts of Animals are not so disposed , that the Alimentary Humour which is conveighed through them from the lower part , is from thence by an uniform tenor diffused every where , without any sensible heat , as in Plants : for in Animals there is a Part , which contains an enclosed Fire , to which the Alimentary Juice being conveighed by the Veins , doth there undergo an effervescence , and then from thence is driven through the Arteries , to moisten and quicken the whole Body ; till after having circulated through the whole Body , it return again through the veins out of the Arteries to the same living Fire , there to be heated and recruited a-fresh . Book . 1. Part. 7. Chap. 17 G. Freman Inv. I. Kip This Receptacle of Fire , in perfect Animals is the Heart , which is the most hot of all the rest of their Parts . Which Heat residing in the Heart , is called Natural , because it doth not presently vanish like to that heat , which is found in inanimate or lifeless things ; but is preserved in the coldest Season , and as long as the Life of Animals doth continue . And accordingly it is said to be the first part that lives , and the last that dies in Animals . IV. This Natural Heat is various , according to the difference of Age. Altho' this Native Heat do continue till the Death of the Living Sensitive Creature , yet it is not always in the same state , for as it encreaseth all the while Animals grow up to their perfection , so after that the same is attained , it decreaseth again and grows weaker , till it be wholly extinguisht . At the beginning of Life , when the more solid parts of the Body are yet soft and tender , they do not so much resist the motion of the Fluid parts , as when they are come to their full growth , and so because the fluid parts are less foceably moved , the heat excited by them is so much the weaker also . But in Old Age , when the more solid parts of the Body , and those more especially through which the Alimentary Juice or Chyle is strained , in order to the making of Blood , begin by degrees to grow harder , and have their pores less crooked and winding , the native heat must need thereby be changed and grow weaker . V. Wherein the Power of Sense and Motion that is in Animals doth consist . The Faculty therefore of Sense and Motion ( which by some is called the Sensitive Soul ) in Animals consists in a due disposition of the Parts , viz. their Nerves , Muscles , Spirits , Fibres , Joints and of their other Organs ; by the help whereof Animals become differently affected from outward and inward objects , and are carried from one place to another . For all Animals ( Man only excepted ) are a kind of Watches or Clocks , which by a fit adaptation of their parts , have a Bodily Principle of Motion in themselves , as long as they are well disposed , and have whatsoever is required to perform and exert the several actions to which they are design'd . For all the Effects we perceive in Animals ( Man excepted ) have no other cause or Principle but the Body , neither is their Sensitive Soul any thing , but the constitution and affection of their Bodily Organs , and the Spirits or the purest parts of the Blood , fitted to the Animal Life , and the exercise of the Senses . VI. What kind of Fire it is that is lodged in the Hearts of Animals And forasmuch as Heat is the Principle of all Motions in Animals , and that whatsoever belongs to Life or Sense is to be attributed to its continual motion ; we must enquire , what this Fire in the Heart is , and what its Effects are . This Natural Fire then , which Physicians generally adscribe to the Blood , is hot , but without Light , and not much unlike to that , which ariseth from the mixture of two Liquors , viz. Oyl of Tartar , and Oyl of Vitriol . The Reason is , because after that the greatest part of the Blood , which hath been rarefied in the Ventricles of the Heart , is conveighed thence , through the Arterial Vein and the Aorta , that Blood which still remains in the same Ventricles , and that which is a-new conveighed into them , from the Ear-Lappets of the Heart , have the same respect to one another , as the foresaid Liquors ; the one being instead of a Ferment or Leaven to the other , to dilate and warm it . VII . How this heat in the Heart comes to be perpetual . The Cause of the Perpetuity of this heat in the Heart is , partly because it is closely shut up and pent in there ; and partly because this Fire is nourished and fed in the Heart by the Blood of the Veins , generated of the Alimental Juices , heated by a kind of Fermentation , and running into the Heart : yet so , as that at the same time this Fire doth also in its turn impart a heat to the Blood , and thereby preserve the Fluidity and motion of it . VIII . The First effect of the Fire in the Heart , is the Dilatation of the Blood. The first effect therefore of this Fire is the Dilatation of the Blood , contain'd in the ventricles of the Heart , together with the warming and attenuating thereof . For it is common to all Liquors , that when they are distilled drop by drop into a very hot Vessel they presently swell and are dilated . Now the Blood being thus rarefied , wants a greater space , and therefore breaks forth from the Heart , much in the same manner , as the water resolved into Vapours , bursts forth from an Aeolipyle ; and the Blood that comes to supply the place of the former , rarefies in like manner as the former , and is extended to a far greater space . IX . Whence the Pulse of the Heart and Arteries doth proceed . From this successive Ingress and Egress of the Blood into and from the Heart , not only the Heart , but all the Arteries together , swell and are depressed ; whence follows the Pulse of the Heart and Arteries , which is as often repeated , as any new Blood enters into the Heart , and the Arteries are extended . For as soon as any part of the Blood enters into the hot Heart , it presently swells and becomes dilated , by which means it puffs up and distends the Heart , and endeavours to get out . Which since it cannot obtain through the same ways by which it entred into the Heart , because of the different situation of the Valves or Flood-gates of the Heart , it forceth open the other Valves that favours its escape , and so gets out . X. The Blood is carried throughout the whole Body of the Animal . And this is the true cause of the Bloods Motion throughout the whole Body ; for seeing that the Arteries and Veins that are fill'd with it , are continuous , and do not in the least hinder it from continuing its Motion , it cannot be otherwise , but that it must alternately , or by turns , with force break forth from the Heart , and from thence be driven into the Arteries and Veins . And it is by this means that the Blood derives the Heat it hath acquir'd in the Heart , to all the other parts of the Body . For the more frequent this motion of the Heart and Arteries is , the more Heat we find in our selves , and in so much the less time the Blood is carried to the utmost parts of the Body . XI ▪ The continual motion of the Blood is the Cause of the Animals growth . By this constant Circulation of the Blood all the Parts of the Body are nourished ; because the thinner and purer parts thereof , being separated from the Excrements , are added to the parts , taking up the place of some particles which they drive away thence , or also grow and encrease , when greater or more particles of Blood come to restore the parts , than can be received into their narrow Pores . And therefore we find , that whilst a Body suffers a continual loss of Blood it is not nourished , but wastes away , and consumes . XII . By the same motion the Animal Spirits are generated . By this perpetual Circulation of the Blood , the Animal Spirits are also generated , which are the most subtil and swiftly moved particles of the Blood , which like a most subtil Wind , or rather like a most pure Flame , do continuallv mount up to the Brain , fill its Cavities , and from thence through the Nerves , penetrate into the Muscles , and impart motion to all the Members . For we need not to seek for any other Cause , that makes those parts of the Blood , of which the Spirits are generated , to mount up towards the Brain , rather than to betake themselves elsewhere ; but this , because all the Blood that proceeds from the Heart , doth by a Right line tend that way . And forasmuch as in the Brain there is not room enough to contain them all , and the passages they are to go through are very narrow , the more subtil only of them get through , whilst those that are weaker and less agitated , are diffused throughout all the other parts of the Body . And therefore we see , that the Heads of many Animals do move after that they are separated from their Bodies , open their Eyes , and bite the Earth , tho' indeed they be destitute of Life . XIII . How the Animal differ from the Vital Spirits . The difference between the Animal and Vital Spirits is very small , or to speak properly none at all . For the Animal Spirit is nothing else , but the Vital better depurated , and freed from its grosser Particles in the Brain . Yet they are distinguish'd in this , that the Vital Spirit , being diffused with the Blood throughout the whole Body , doth promote and execute the Vital Functions , viz. Nutrition , Accretion , and Generation : Whereas the Animal Spirits , collected in the Brain , and from thence diffused through the Nerves into the Organs , are chiefly subservient to the Animal Functions , viz. Sense and Motion . XIV . Why the Animal Spirits are unequally distributed through the Body . But here it may be demanded , why these Animal Spirits , do not always flow alike from the Brain into the Muscles ; but are very unequally distributed , so as that frequently many more Spirits are sent to some Muscles , than to others ? I answer , That this proceeds chiefly from two Causes : The First is , the unequal agitation and figure of those Spirits , and the Parts that compose them . Which inequality may proceed from the various Dispositions of the Heart , Stomach , Spleen , and all other parts , which contribute any thing towards their Production . Or from the different matters of which the Spirits consist ; as may be seen in those that have drunk a great deal of Wine ; that the Vapours of the Wine swiftly entring the Blood , mount up from the Heart to the Brain , where they become turned into Spirits ; which being stronger , and in more abundace than those that commonly are there , may be able to agitate the Body in many various and wonderful manners . The other Cause is the Variety of those Motions , which are excited in the Organs of the Senses by their Objects . For it may be easily conceiv'd , that the figure and peculiar agitation of the Parts , which constitute the Spirits ; or the Action of Objects upon the Organs of the Senses ; or the Inclination of the Animal to this or the other Motion , determining the Spirits to enter into this Nerve rather , than into another , cause the Spirit to run into one Muscle , rather than into another : For such is the make or structure of the Muscles , that they swell upon the entring in of the Spirits , and consequently are contracted , and so by drawing those parts of the Body to which they are fastned , effect the motion of them . CHAP. XVIII . What the Souls of Brute Beasts are . I. The Definition of a Brute Beast A Brute Beast is by the Peripateticks commonly defined to be an Irrational Animal , or an Animal endued with Sense . Yea , they make them almost Rational , as supposing that some plain Foot-steps of Reason are observable in Beasts . But we on the contrary are persuaded , that a Beast is a meer Automaton or Engin ; that is , an Animal destitute of all Knowledge , and consequently may be thus defined : A Beast is an Artificial Engin or Machin of GOD , furnish'd with a various and wonderful structure of Organs , containing in it self a material Principle of Life , Motion and Sense . For herein Beasts do differ from Men , that these have an Immaterial or Intellectual Substance joyned to Matter ; which the former have not . II. What ha●● persuaded some , that Beasts make use of Reason . It cannot be deny'd , that there are some Actions in Brutes , which have a great resemblance with those that are in Men ; whence some have concluded , that they had the use of Reason , tho' in an inferiour degree , in comparison of Men. How comes it to pass , say they , that when a Dog in hunting comes to a place where 3 Ways meet , having laid his Nose to 2 of them , he immediately casts himself along the third ? How can it be conceiv'd , that Birds should be able to build their Nests , with such extraordinary Artifice and convenience for themselves and their young , if they be wholly destitute of Discourse and Reason ? These and other Actions of Animals , have racked the Brains of several , and forced them to allow some foot-steps of Reason to brute Beasts . But this Question will be easily determin'd , by supposing 2 things . III. Brutes 〈◊〉 not expres their own Thoughts . First , That no brute Animals , how perfect soever they be , can express their Thoughts ( if they have any ) by Words : Which yet all Men , how dull and stupid soever they be , can do ; neither are any of them so far distracted , but that they can discover their Affections by Words . The Reason of which difference doth not proceed from the Organs , seeing that several Animals , such as Parrots and Jackdaws , utter Articulate words , and yet for all that can never attain to our way of Speaking , that is , they can never manifest to others , that they understand what they pronounce . Whereas on the contrary , persons that are born Deaf , and to whom Nature hath deny'd the use of Speaking , can by signs discover their Conceptions to others , and make known what they desire or refuse , by their Gesture , Eyes , and the like . Now the want of this in Brutes , doth not only argue a less degree of Reason in them , but also strongly prove them to have none at all . IV. There are no signs taken up at pleasure , to be found in Brutes . In the Second place , we must suppose that the Signs which have been invented by Men to represent their Conceptions , do differ very much from those Natural Voices and Signs , which are genuine Expressions of Bodily Affections : Wherefore seeing the former are not to be found in Beasts , and that they are not able any way to express their Minds : neither must we allow them to have any use of Reason . V. Whether Beasit do Discourse together If any one will say , That Beasts do discourse and talk together ; this they must prove before we can believe them : For seeing they have Organs that are much like ours , why should they not be able to communicate their Thoughts to us , as well as to one another ? And tho' in some cases they act with extraordinary industry and exactness ; yet cannot we from thence infer , their acting according to Reason , for otherwise they would excel us in many things ; but only this , that Nature works in them according to the disposition of Organs : In like manner as a well-wrought Watch , doth more certainly and exactly distinguish the Hours , than we possibly could do with all our Study and Endeavour . VI. The Soul of Brutes consists in the Disposition of their Organs . I conclude therefore , that there is no Soul in Brutes , besides the Disposition of their Organs , and the figure of their Bodies ; and that all their motions depend only on the Influence of their Spirits , and the due Disposition of their Organs . Neither will this seem strange , if we consider , that even all our Actions , which we perform , without minding or giving heed to them , are produc'd by the same Cause , as Respiration , the Motion of our Heart , the Digestion of our Meat , and the like . For all these do not appear in the least different from those that are done by Engins . This is evident from one Instance , viz. that those who fall from on high , stretch forth their Hands to save their Heads , which they do without any assistance of the Soul ; but only because the structure of our Body is such , that the sight of an imminent Fall , being convey'd to the Brain , drives the Animal Spirits into those Nerves , that move the Arms and Hands : Seeing all this is done without the least advertence in the Soul. And thus we see the Reason , why a Sheep flees at the sight of a Wolf , even because the Light reflected from the Body of a Wolf , doth so agitate the strings of the Sheeps Optick Nerves , and consequently the Brain , that thereby the Animal Spirits are so driven into the Nerves , as to put the Members destinated for running into motion . VII . This confirmed by several places of Scripture . This Doctrin may be confirmed from several places of Scripture , which plainly asserts , that the Soul of Beasts is their Blood ; Levit. 17. 14. For the Life , or Soul , of all flesh , is the Blood of it . Gen. 9. 4. But Flesh with the Soul thereof , which is the Blood thereof , shall ye not eat . Deut. 12. 23. Only be sure that thou eat not the Blood , for the Blood is the Soul. From whence we may evidently conclude , That the Life of Animals consists in the continual flowing of the Blood and Vital Spirits to the Brain , and other parts of the Body . And therefore , that we need not search for any other Cause of those motions we find in Beasts , but the Influence of Spirits , and the Disposition of their Organs . VIII . How Dogs light upon the true Trace of the Hare . As to that Objection , That Dogs , after they have laid their Noses to two Ways , without any further haesitation , betake themselves to the Third ; we say ▪ that this is not done by them from any Reasoning . but only because in that third Way they meet with the Scent of the Beast , which they did not find in the two other . Neither doth the building of Nests argue any force of Reason to be in Birds ; because all the Nests that are built by Birds of the same kind , are all of them built after one and the same manner , which would not be so , in case they acted according to the dictates of Reason : For we find that Men who act so , build their Houses with the greatest variety , according to the different Suggestions of their Rational Faculty . IX . How Life and Sense may be allowed to Beasts . Neither do we altogether deny Life to brute Beasts , but freely allow them such an one ; the Activity whereof proceeds from the disposition and structure of their Bodies . Nor Sense neither , if it be only taken for a Bodily Affection of the Members , outwardly and inwardly fitly disposed and aptly joyned , to perform this or the other motion . We grant also , that Beasts do many Actions by Nature , like to those which Men perform of Choice and deliberately ; but withal assert , that the various and sudden motions of Beasts , do not argue them to have a Knowing Soul , but only a most curious and exactly proportionate composure of Parts , so as that the least thing is sufficient to put it in motion : And that this is possible , we prove by that Wooden Statue of Venus , which was so Artificially made by DAEDALUS , that it could walk up and down : And by the Wooden-Dove , made by ARCHYTAS of Tarentum , which did fly about in the Air. X. Whether Apes are to be accounted Rational Creatures . You 'l say , that Apes do many things that manifestly prove them to have the use of Reason ; as appears in that when they go out to fight , they observe exact Military Order , and range their Armies as Men do ; as also , in that they bury their dead , and perform many other such like Actions , which demonstrate them to be , in some degree , Reasonable Creatures . To this I Answer , That all these Actions are performed by Monkies naturally . For as Watches point the Hours , so Beasts perform their Actions by Instinct : Neither is it a matter of greater wonder , that Monkies do marshal their Armies , supposing it to be true what Historians relate of them , or bury their Dead ; than that Dogs and Cats , after they have voided their Excrements , scrape up the Earth round about , to cover them from the Eyes of Men ; tho' indeed they seldom do it to any purpose ; that is to say , so as to hide them wholly . Whence it is evident , that they act meerly by Instinct , and without any advertency of what they do ; and that there is nothing more in them , than there is in any curious Clock-work or Machin . XI . If Brutes have a Soul , it must be Immortal . Conclude we therefore , that Beasts perform all their Actions , whether Sensitive or Motive , only by the Texture and Disposition of their Parts , without any thing of Thinking , tho' in the most imperfect degree imaginable . For if we allow Brutes to be endued with Understanding , be it never so mean and imperfect , then we cannot deny them the Priviledge of a Soul ; and so shall be forc'd to own , that Monkies , Dogs , Foxes , &c. have Souls , as well as Men : And if we grant this , we must also allow , that this Soul is Spiritual and Immortal ; because Thinking , wherein the Essence of the Soul consists , is not a Mode of the Body , neither doth in the least depend on it . XII . If Brutes have Souls , they will not be distinguish'd from Men. Moreover , supposing the Souls of Beasts to be Spiritual and Indivisible , it will follow that they are also Immortal : Neither is there any Argument drawn from the Light of Reason , whereby we can prove the Immortality of Human Souls , which will not as well prove the same concerning the Souls of Beasts . Besides , if we allow Knowledge to Brutes , we must also make them capable of Religion ; for to imagin a Knowing or Thinking Creature , without being under an Obligation to obey GOD , and pay Religious Duties to him , is repugnant . For if the Souls of Beasts be Knowing , they will in the first place know themselves ; and it is impossible , but that by knowing themselves they should be led to the knowledge of their Creatour . Which Opinions would pave a ready way to Atheism . This Question is discust more at large in my Dissertation , of the want of Sense and Knowledge in Brutes ; to which the Reader may have recourse . CHAP. XIX . Of Fourfooted Beasts and Reptils , or Creeping things . I. The Division of an Animal into Rational and Irrational , is no true Division . AN Animal is commonly divided , in the Schools , into Rational and Irrational , as into two Members that take in the whole Nature of Animal , and comprehend all its several species . But since ARISTOTLE himself doth not approve of this Division , because one of the Terms of it is a Privation of the other ; for he declares , that all Divisions so exprest are illegitimate ; none will think strange if we reject it for the same Reason . For the word Irrational , or Unreasonable , represents no positive Idea , which yet is requisite to constitute the difference of several species or kinds . Besides , every Division must be exprest in such terms , as do explain and lay open the Natures of the things divided ; whereas by Negative terms , neither any Attributes nor Properties are declared ; and consequently the Division of Animal into Rational and Irrational , is to be rejected , and to be reckon'd amongst those which are good for nothing else , but to render the Nature of things dark and obscure . II. Of Animals , some are Terrestrial , some Volatile , and others Aquatile . An Animal therefore may more commodiously be divided into Terrestrial , Volatile or Flying , and Aquatile or Swimming , from the places where they live , and the motions they exert . III. What a Terrestrial Animal is . We call those Terrestrial Animals , that live on the surface of the Earth ; whereof some be Four-footed , that go upon four Feet ; and others Reptils , which wanting Feet , do move themselves by Creeping . Fourfooted Beasts do go by setting their Feet one before another , after the same manner as other Animals that have 2 Feet , or more than 4. To the performing of which progressive motion are generally required Toes , Feet , Shin-bones , Legs , which together with the Nerves , Muscles , Tendons , Ligaments , Gristles and Membrans , constitute the Organs of Progressive motion . The Bones belonging to this Organ are in several places joyned by Articulation , the round Head of the one being lodg'd in the Hollow of the other . The Toes consist of many Joints , to which the Instep is joyned , and to that the Heel , and the Bone call'd Navicularis or Cyboides ; the Leg is joyned by articulation with the Ankle , and the Thigh with the Hip-bone , and the Shank or Leg. Progressive motion therefore is performed , when one of the Legs standing still upon the ground , the other is thrust out forwards : For the Legs are not moved both together , but by turns ; so that whilst Animals go forwards , the Muscles act their several Parts , and the Thigh is turned in the Hip-bone , and the Ankle about the Leg. IV. Circumstances accompanying the Progressive motion of a Man. Whence it follows , that a Man ▪ for Example , cannot walk directly in a Right line ; because as he goes , he rests himself sometimes on one Leg , and sometimes on another , so that both his Legs or Feet are not moved in a Right line , but according to 2 Parallel lines , which seem to be Right lines . It follows also , that a Man that goes or walks ▪ doth continually rest or stay himself upon the Earth ; because one of his Feet doth always stand firm on the Earth , till the other comes to take its turn : Whence it follows , that it is only the Foot that stands still , that makes the Bulk or Trunk of the Body to move forwards . It follows also , that the advancing Foot moves as fast again , as the Trunk of the Body : For seeing that the Body advanceth continually , and that the Feet advance only by turns , one half of the time must be allow'd for the Resting , and the other for the Advancing ; and that consequently the Foot that advanceth , by moving as fast again , doth compensate the delay of its resting . V. Of Foure footed Beasts , some are Viviparous ▪ and other● Oviparous . Amongst Fourfooted Beasts , some are greater ; as the Horse , Elephant , Camel , &c. Some of a mean Bigness ; as the Dog , Lion , Sheep , Cat , &c. Some Little ; as the Rat , Mouse , &c. And of these , some are Viviparous , that bring forth living Births ; and others , Oviparous , that lay Eggs. VI. What Animals are Viviparou● ▪ and what Oviparous . Those are Viviparous , that bring forth a living and perfect Animal ; and Oviparous are those that lay Eggs , whence an Animal afterwards is hatched : Such as are the Crododile , the Lizard , Frogs , Tortoises , whether of the Land or Sea. It is matter of Wonder , that the Crocodile , so vast a Creature , which commonly grows to the length of 15 Cubits , should proceed from an Egg no bigger than that of a Goose . Lizards , whether those of the greater sort , that are green , or those other that are distinguish'd with shining Stars , are propagated by Eggs. The Tortoise of the Earth , lays Eggs with a Yolk in them , which it covers with Earth , and by the warmth thereof are hatched ; whereas the Sea-Tortoise covers hers with the Sand of the Sea-shoar . Serpents also are Oviparous , and commonly lay their Eggs in Horse-dung , or near to the heat of an Oven or Furnace , because they cannot hatch them themselves , as Birds do . Book . 1. Part. 7. Chap. 20. G. Freman In. I. Kip Sculp . To the Worshipfull Chichester Graham of Norton-Conyers in the north Rideing of york-shire Esqr. And to Anne his Wife , daughter and Heyress of Thomas Thweng of Kilton Castle in Cleaveland in the Said County Esqr. deceased This Plate is humbly Dedicated by Richard Blome . G. Freeman Invent : M Vander Gucht . scul . CHAP. XX. Of Flying Animals , or Birds . I. What Birds are , and why the Eagle is said to be the King of Birds . FLying Animals are commonly called Birds or Fowl ; and are distinguish'd from others , for that they fly in the Air. The Eagle is accounted to be the King of them , because of the Strength of his Body , the Height of his Flight , the Sharpness of his Sight , and the Nobleness or Generosity of his Temper . II. The various kinds of Birds . There are innumerable Kinds of Birds ; and forasmuch as it is next to impossible to speak of all the Individuals of them , I shall content my self to enumerate their Principal kinds , as they are distinguish'd according to their several ways of Feeding . Some are Carnivorous , or such as feed upon Flesh , commonly called Ravenous : And these again are of two kinds , viz. such as have Crooked Bills ; as the Eagle , the several sorts of Hawks , &c. Others have a more strait and sharp-pointed Bill or Beak ; as the Raven , the Jack-Daw , Mag-Pye , Crow or Rook , &c. Another kind are Vermivorous , or such as feed upon Worms ; as the Nightingal , Wood-Cock , Snipe , Wood-pecker , Titmouse , Wren , &c. Another Baccivorous , or such as feed upon Berries ; as are the Thrush , Black-bird , the Starling , &c. Others are Granivorous , that feed upon Corn and other Seeds : And of these again , some love to be scraping and tumbling in the Dust ; as Cocks and Hens , the Peacock , remarkable for his beautiful Tail , the Bustard and Partridge . Others love to wash and dip themselves in Water ; as amongst Singing-Birds ; the Linnet , the Ligury , the Lark , &c. III. All Birds go upon two Feet only . Birds have only two Feet , and those either plain and flat ; as Swans , Ducks , Geese , and all Water-Fowl : Or else have their Claws sever'd and divided ; as Eagles , Sparrows , Swallows , Pigeons , &c. Some Report , that the Manucodiata , or Bird of Paradise , hath no Feet , but always hovers in the Air , and is never found upon the Earth , but when dead : But Reason and Experience evince the falshood of this Story . For all Animals stand in need of Sleep , which these cannot take in the Air , especially being always in a hovering motion . IV. That the Bird of Paradise hath Feet . And as to those who imagin , that the Birds of Paradise take their Rest hovering in the Air , by reason of the Lightness of their Body , and the Largeness of their Wings and Feathers , and never fall down to the ground till they be dead ; I would fain know of these Men , why they do not fall down to the ground when they are asleep , as well as when they are dead ; forasmuch as in Sleep all the Senses are lock'd up , and all motions of the Members cease ? But that all Doubt may be taken away in this Point , let us consult such as have been Eye-witnesses . ANTONY PIGAFESTA , a Famous Traveller , in the Diary of his 〈…〉 then sell to Strangers , or stick them in their Caps or Helmets , for Ornaments sake . V. Birds proceed from Eggs. Birds are the Product of Prolifick Eggs , that is , such as have been invigorated by the Male , and presuppose the fruitfulness of the Female . For as an Egg without the Cock's Treading is addle ; so the Hen , by producing that Cavity which is in the Yolk , doth contribute likewise to the fruitfulness thereof . This will be the better understood by distinguishing the Egg into 2 Parts , viz. into the Yolk and White . The Yolk is of a yellow Colour , tending to Red , as being nourished by Blood ; which is manifest from those small Veins , that are disperst throughout its outward Coat or Membran . Besides this Coat , there is also another very thin one , by means whereof the Yolk hangs to the Cluster , so called , and covers the whole Yolk , and conveys Veins and other Vessels to it , by means whereof the Alimentary Juice is transmitted . The White is the more Outside ▪ part of the Egg , yielding copious Nourishment , but somewhat of a colder Temperament , and not so easie of digestion as the Yolk : It consists of a fibrous or stringy Matter , and therefore is easily coagulated , growing hard with the least heat . At the Broad-end of the Egg a little Hollow is found , where the Chicken begins to be formed ; and this proceeds from the Hen only . Besides these , there are found in Eggs 2 Specks , call'd by us the Cock's Threadles , in which the plastick or formative Virtue of the Egg is supposed to consist , according to the Opinion of the Common People ; but it is a Mistake , seeing they are found in all Eggs , as well in those that are addle , as the prolifick . An Egg therefore becomes fruitful , when the Seed of the Cock is joyned to that Hollow or Scar in the Egg before-mention'd , which proceeds from the Hen. For it is not to be question'd , but that the Seed of the Cock doth reach the Womb of the Hen , and as it were , takes root in the Cells thereof ; whence the Rudiment of the Chicken afterwards buds forth . VI. The Progress of the Forming of a Chick , the 1 , 2 , 3 , 4 , and 5th Day . When the Hen therefore sits upon the Egg , and excites the Bud , or prolifick part of it by its heat , the strings or fibres become dilated or extended into several concentrical Rounds or Circles , and the Chicken becomes formed by degrees . For the second day of the Hens sitting , the Hollow that is at the broad end of the Egg , begins to be dilated , and becomes a Bubble , the thinner particles of it being exhaled by Heat , those only remaining that constitute that most clear water , wherewith the Bubble is filled . On the Fourth day a Purple Spot , or Reddish point appears , which is the Rudiment and first beginning of the Heart , and from whence a short time afterwards proceed many little Veins of the same colour , but almost invisible by reason of their fineness and subtilty , and which afterwards end in the Umbilicary or Navel Vessels . On the Fifth day there appear in this Rudiment of the Heart , 2 Ventricles , and as many Ear-lappets ; and because the Ventricle or Right Cavity is contracted , when the Ear-lappet that is joined to it is dilated , they seem to be 2 Bladders . The same day , there appears something in the likeness of a Worm , joined to the little Vein , to which the round little Body is annexed , but bigger than it , being distinguisht into 4 Bubbles filled with a most clear and Christalline Liquor . Which 4 Bubbles do represent both the Eyes , the Brain , and the Cerebellum or hinder part of the Brain . VII . What is formed in the Chick the succeeding days . On the Sixth day the Feet and Wings of the Chicken are formed , the Coats and Membrans of the Eye begin to appear , as likewise the first beginnings of the Lungs and Liver . Also the Bill or Beak and all the Guts and Inwards . At the same time the Chicken begins to move it self a little , and to lift up its Head. Then also the Rudiments of the Bones begin to be formed , appearing like so many thin Spider Webs . On the Seventh day all the parts begin to appear more distinct , and so encreasing every day till the Tenth , wherein all its parts are compleated . For the Head then appears greater than all the rest of the Body ; and the Eyes bigger than the Head ; and in this state the Chicken swims on the Colliquamentum or dissolved White of the Egg. After the Fourteenth day , all its members appear still more distinctly : for then it begins to be covered with Feathers , the inwards begin to be hid , and the hinder part of the Brain begins to be pent up in the Skull ; the Chicken begins to Peep or Cheep , and being no longer able to bear the straightness of his pent up Room , after having first consum'd the White , and afterwards the Yolk also , it breaks through the Shell and comes forth . VIII . It is probable that a Chick and other Animals , are not formed by Parts , but all together . This is the Progress our Eyes discover in the forming of a Chicken , because it appears such to the unassisted Eye . But when we take in the Verdict of the Microscope , as MALPIGHIUS did , there will appear to us in every Fruitful or Prolifick Egg ( for in the Addle , no such thing is to be found ) before the Incubation of the Hen , the first Rudiments of the Chicken ; in like manner as sometimes , even without the assistance of a Microscope , we can discern the first Lineaments of a Plant in the Bud of it . This is very evident in a Tulip , for if in the Winter time we view the Bud of it , either with a Magnifying Glass , or only with our bare Eye , we shall not only see the Leaves , which afterwards turn Green , but also those that constitute the Flower of the Tulip , with the Triangular part of it enclosed in the Grain , and last of all those little 6 Pillars , which surround it , at the bottom of the Tulip . And accordingly it seems probable , that as a Flower contains a Flower , so an Animal contains another whole and compleat Animal , tho' sometimes the same be not discoverable , but with the assistance of a Microscope . IX . How Birds do fly in the Air by the Help of their Wings Birds with the help of their Wings , keep themselves up , and move in the Air ; because the Air resists the swift agitation of their Wings , and opposeth their descent or falling down . For tho' the Air be very pliable , and ready to give way to other Bodies , yet it indeed makes a great resistance , and like the Water , opposeth the entrance even of Heavy Things . For we see that when Boyes skin Stones along the surface of a smooth River or Pond , the Water resists them , and makes them by several rebounds leap up from the Water which opposeth their entrance . Yea many times the Bullets discharged from great Guns are seen to graze along , and rebound from the Water , so that sometimes men that are walking on the Bank or Shoar are sometimes wounded and killed , by Bullets so rebounding from the Water . And in the same manner are Birds borne up in the Air , and tho' they be heavier than it , yet by the spreading and continual beating of their Wings , they are supported in the midst of it . X. Two things are required to the Flight in Birds . To the flying of Birds 2 things are requisit , First the spreading of their Feathers , the single Hairs whereof are so intangled , that the Air cannot enter through them without some difficulty , from whence the resistance ariseth . Secondly , the expansion of their Wings , and their beating of the Air with them , and that either leisurely , as Kites do , or more frequently like Doves , or very fast as the Felfare . And accordingly by the Prevalence of this resistance , the force of Gravity is overcome , and the Body of the Bird continues poised in the Air. XI . How Birds move themselves this way and that way . Moreover forasmuch as Birds do not only press the Air , and hover in it , but also move up and down ; it is necessary that the Wings which bear them up , be thrust backwards ; that so by the resistance of the Air behind them , they may be forwarded in their progressive Motion . For the structure of a Birds Wings is such , that the hollowness of them forward , and their prominence backward , do both concur to beat back the Air. A Resemblance whereof we meet with in those that swim , who if they do only press the Water , with their Belly and Hands , without beating it back with their Feet , they cannot move forwards ; no more than a Ship can advance if the Water be only divided by the Oars , without they be thrust or moved backwards . Birds therefore in order to their moving forwards , and passing this way and that way , must beat back the Air behind them . And whereas some Birds fly much more swiftly and strongly than others , as the Swallow , the Pigeon and the long-winged Hawks ; the reason thereof is , either the more advantageous make and frame of their Wings , or the strength of their Muscles wherewith they move them , or the proportion of Heaviness or force that is in their Bodies . Book . 1. Part. 7. Chap. 21. G. Freman . Inv. I. Kip. Sculp . XIII . The Tail of Birds only moves upwards and downwards . And that we may the better apprehend how the Tail of Birds serves them to turn downwards or upwards : Let us suppose a Bird AB , whose Center of Gravity is C , flying Horizontally from G to F , and that in flying he rear his Tail BH ; this supposed , it is manifest , that the Air , which resists the Tail BH , makes the whole Body of the Bird turn about the Point C , that it may take the situation LK , wherein the Head raiseth it self from A to L ; and on the contrary , when the Tail is turned downwards to BI , the resisting Air makes the Body of the Bird to turn about the same Point C , for to take the posture NO , wherein the Head of the Bird doth lower it self from A to O. CHAP. XXI . Of Swimming Animals , or Fishes . I. The Whale is the greatest of all Fishes . FIshes , because they live in the Water , and move themselves by way of Swimming , are called Aquatiles . The most bulky of these , and as it were the Prince of them all , is the Whale , very common in the Indian Sea , to whom PLINY assigns the largeness of 4 Acres , which make out in length 960 Foot. PARAEUS makes mention of one that was taken in the River Schelde , 10 Miles from Antwerp , in the Year 1577 , which was 58 Foot long , 16 Foot high , and its Tail 14 Foot broad ; the distance from his Eye , to the entrance of his Mouth , 16 Foot ; his Under-Jaw was of 6 Foot furnish'd with 25 Teeth , to which in the Upper-Jaw were answering so many Cavities , wherein , upon the shutting of his Jaws , they were hid . A Whale is distinguish'd from other Fishes , in that it hath , besides Lungs , Kidneys , Arteries , Bladder and Genitals , a great Pipe in the fore-part of its Head instead of Gills , by which with great force it spouts again out the Water it receives into its Body . II. The Difference of Fishes with respect to the several places they delight in , and their coverings . There be many differences of Fishes taken from the coverings of their Bodies , or from the Place they delight in . With regard to the Place some are Sea-fish , others River-fish , and others such as delight in Lakes and Ponds . With respect to their covering , some are Scaly , some covered only with a Skin , and that either with a smooth , or rough one . Amongst Sea-fish some are called Littoral , because they delight in the neighbourhood of the Shoar , such are amongst the Scaly Fishes the Roach , and the Trout , &c. and of the smooth skin'd Fishes , the Mackrel and the Eel ; others are called in Latin Saxatiles , because they delight in Stony Places , as the Gilthead , common in the Sea of Crete , the Gudgeon , the Hornback , some pass from the Sea into Rivers , as the Salmon , the Lamprey , &c. III. Fishes are propagated by Copulation . Some have been of the opinion that Fishes were not generated by Copulation , but that the Female swimming before did scatter her Spawn , which the Male following her did impregnate , by pouring his Milt upon them . But this is a mistake , for Fishes do copulate , which would be altogether in vain , in case the foresaid opinion were true . Besides how can we conceive that the Spawn or Eggs of the Female Fishes , should be sprinkled with the Milt of the Males , seeing that it would by mixing with the water lose all its virtue . Neither can we build much upon ARISTOTLES Authority in this Case , forasmuch as he doth not prove it by any Experiment . And in his 3 d Book de Animal . Cap. 7. he owns the thing to be doubtful . Fishes therefore are generated by Copulation as all other Oviparous Animals are : but to what purpose would this Copulation be , if the Male doth not by his Emission render the Eggs of the Female fruitful ? Besides , it is observed that the Males abound with Milt at the same time that the Females abound with Spawn or Eggs , and that then is the time of their Copulation . And it is at the same time that the Males follow the Females , not that they may besprinkle the scattered Eggs , but that by their repeated Copulation , they may impregnate other of the Females Eggs that are ready to be Spawn'd : as we see that to the same end a Cock doth often tread the Hen : for seeing that Fishes , above other Animals , do abound in Eggs , they can never all of them be impregnated by one act of Copulation . From this way of Generation we are to except the Dolphin and the Whale , which are not Oviparous , but bring forth living Births , and therefore their way of Copulation is different , and their Breasts are filled with Milk , contrary to the nature of other Fishes . IV. Many Monsters are found amongst Fishes . Amongst Fishes there be many that are called Monstrous , as the Hippopotamus or the River Horse , because it resembles a Horse , yet not so much in Figure , as in its Bulk . For it hath Ears like a Bear , and a Mouth wider than that of a Lion , with very great Eyes , and a very short Neck , or none at all ; it hath the Tail of a Swine , with short Feet , and a divided Hoof like a Hog . ARISTOTLE describes this Animal Lib. 2. Hist. Animal . thus ; The River-horse , saith he , which Egypt brings forth , hath the Mane of a Horse , a round Hoof like a Pipe or Tube , a flat Snout , and an Anckle like those that divide the Hoof in two , Teeth somewhat prominent and sticking out , the Tail of a Swine , the Voice of a Horse , the bigness or bulk of an Ass ; the thickness of his Hide being such , that they make Hunting-staffs of it ; and all the inward parts of it resembling those of an Ass or Horse ; which is the account PLINY gives us from Aristotle . The Sea-calf is also accounted a Sea-monster , for it differs from all other Fishes in the shape of its Body , insomuch that ARISTOTLE ranks it amongst 4 footed Beasts . This Monster hath short Arms , without any Elbow ; and for the rest hath some resemblance with our Bodies : It consists of many Bones , and is covered with a thick Hide , full of dark couloured Hairs , drawing towards an Ash-colour : the Head of it is but little with respect to its Body , and its Neck is long , which it can stretch out , and draw in at its pleasure ; it hath no Ears , but instead thereof only some open holes ; its lower Jaw resembles that of a Wolf , but the upper is much broader than those of the same Animal ; his Nostrils are very like that of a Calf , his Teeth like those of a Wolf , and his Eyes are of a changeable and uncertain colour . A Thornback also is a very deformed and monstrous Fish , but being so commonly known , there is no need to insist upon the Description thereof . V. The Peripateticks following their Master , deny all Respiration to Fishes . Forasmuch as Respiration is ordained by Nature for the Cooling of the Blood , and to send away the vapours and smutty steams proceeding from the Body , which would otherwise stop the Blood from entring into the left Ventricle of the Heart , if they were not emitted out ; it hath been a question controverted amongst the Antients , whether Fishes and other Animals that want Lungs do breath or no. This is commonly denied by the Perepateticks upon their Masters Authority , who by no means will allow any Respiration in Fishes . VI. Fishes breathe by the drawing in , and letting out of their Breath . But our Modern Philosophers and Physicians , tho' they cannot allow Fishes such a Respiration as is performed by the Contraction and Dilatation of the Midrif , and Lungs , since they take for granted that Fishes ( except Whales and Dolphins ) have no Lungs , yet neither do they deny them such a Respiration as consists in the drawing in of Air or the like Halituous Matter , in order to the cooling of their Blood. Pliny joins with this opinion , Lib. 9. Cap. 7. because , saith he , instead of Lungs they have other Organs for Breathing , and instead of Blood some other Equivalent humour . Neither do we want reason wherewith to back this opinion ; for the end of Respiration is the cooling of the Heart , and the cherishing and refreshing of the Vital Spirits : now both of these are necessary to the preservation of the Life of Fishes . Besides , why were Gills given to Fishes , but that through them the Water , either alone by it self , or mingled with the Air , might be conveighed to the Heart , and afterwards cast out again ? But who will not be convinced that Fishes must take in the Air by Respiration , when we find that they die without it ? For if Fishes be shut up in a Vessel with a narrow Mouth , full of Water , they may be kept alive there for many Months , if the mouth of it be kept open , but if it be shut up they die immediately , which would never be if they did not stand in need of Air , or if Water alone were sufficient for the cooling of their Heart . VII . The Respiration of Fishes proved by Experiment . And what is very observable herein , is that as soon as the Vessel is stopt the Fish get themselves up to the top of the Water , to take in some Air , which they do not do whilst the Vessel is open , but play up and down the Vessel . Wherefore RONDELETIUS in his 4 th . Book of Fishes , Cap. 9. saith , that the greatest Fishes , and those that have Lungs do draw in the Air together with the Water ; and cast it out again by the same Pipe , whereby they draw in their Breath : and in this manner do Whales , Dolphins and Whirlpools ( a Fish so called ) draw their Breath . Others perform this Respiration by the Lungs , only without the assistance of a Pipe to cast out the Water , as Sea Tortises or Tortles , and those of Rivers and Lakes ; as also Sea-Calves , who have wide Nostrils , and a very strait Windpipe , by which means they spout out the Water again through their Nostrils , but retain the Air. All other Fishes that have either open or closed Gills , do with them draw in the Air , and at the same time cast out the Water . Oysters which are covered only with a very thin Skin , seem to breath through the Pores thereof . And in a Word , all Animals living in the Waters , according as their heat is more intense or remiss , or according as their Spirits are more or less copious , so they have a several way of Respiration . VIII . The Life of all Animals is preserved by the Air. Neither indeed is there any Animal in the Universe , which is not preserved by the Air , as is manifest from the Pneumatick Engine of Mr. BOYL , in which whatsoever Animals are put , excepting only Oysters and Crabs , die immediately . The same thing is yet more evident in Insects , in whose Rings 2 Holes are discernible ; which when they are stopt with Oil or any other glewy or clammy Liquor , so that the Air cannot have its free entrance , the Animal presently begins to languish , and after some Convulsive Motions expires . IX . Why a Man cannot breathe under water . But you will object with ARISTOTLE , that if the Air do penetrate the Water , and reacheth to the very heart of Fishes ; why then for the same reason a Man may not as well fetch his Breath under Water ? I Answer , that the cause thereof is , because Man living in the Air , doth continually attract it very copiously , whereas that portion of Air which is in the Pores of the Water , is very inconsiderable if compared with that which Men naturally take in , and therefore is not sufficient to answer that end . Moreover , for want of Air the Water is drawn into the Lungs , and there being no way to cast it out , because of other Water still coming in , it oppresseth the Heart , and choaks a Man. Whereas Fishes are furnisht with Gills , by the help whereof they cast out the VVater , nor suffer it to come to their inwards , but the Air only , whereby the heat of their Heart is allayed and their Vital Spirits preserved . X. How Fishes swim . The Swimming of Fishes , doth somewhat resemble the Flying of Birds : for their Fins are instead of VVings , as also their Tail. These consist of Membranes , joyned together by long Fibres , and which can be distended or contracted and turned every way . XI . What instruments the Fishes use to move themselves in swimming . There are in all Fishes , Bladders full of Air , which according as they are comprest or dilated , so the Fishes are poised on the waters . For it hath been observed that a Fish , whose Airy Bladder had been broken in the empty Recipient of the Pneumatical Pump , could never , during a whole Months time , that it lived in a Fish-pond , rise to the top of the water , but was fain to keep at the bottom of it . According therefore as Fishes do contract or dilate the said Bladder , so they encrease or diminish the bulk of their Body , and accordingly also do diminish or increase their weight ; and by this means they can either dive to the bottom of the water , or mount to the top of it . Much after the same manner as Glass Bubbles , or Figures hanging in a Glass Tube full of water are made to go down to the bottom , or to come up to the top at pleasure . Book . 1. Part. 7. Chap. 22 ▪ G. Freman . Inv. I. Kip Sculp . To Mr. Iohn Ieffreys only Son and Heyre of Iohn Ieffreys of Llywell in Brecknock shire , and of the Citty of London Esq r , by Elizabeth his wife . This Plate is humbly Dedicated by Richard Blome . XIII . Of Flying Fishes . Amongst Fishes there are some that fly ; as the Sea-Swallow , and the Sea-Hawk , so called , which have fins joyned to their Gills of that length , that they reach almost to their Tails . These sometimes fly in such vast Shoals in the Air , as PLINY tells us , that they encumber Vessels in their Course , and sometimes make them sink . But they never fly high in the Air , but keep close to the Surface of the VVater ; so that some question , whether the Sea-Hawks fly or swim . They continue thus hovering in the Air as long as their Fins are wet ; and as soon as they are dry , fall down again into the VVater . CHAP. XXII . Of Insects . I. Four kinds of Bloodless Animals . ARISTOTLE reckons up 4 kinds of Bloodless Animals : Such as are soft , as the Polypus or Pourcoutel , the Cuttle-fish , &c. Such as are cover'd with a hard Shell , and difficult to be broken ; as the Crab , Lobster , &c. Such as are cover'd with a Shell that is brittle and easily broken ; as Cockles , Perwinkles , and other small Shell Fishes ; and of these there is so great a variety , with respect to figure and colour , that they cannot all of them be reckon'd up . And , Lastly , Insects , so called from the Intersections and Divisions of their Bodies ; which also are styled by ALBERTUS MAGNUS , Annulata , as consisting of several Rings . II. The great variety of Insects , with relation to the place wherein they live . The Variety of Insects is very great , with respect to their Food , the quality of their Bodies , and the Place in which they live . As to the Place , Hairy and Red VVorms are generated in the Snow : Fire-flies , which some suppose to be Crickets , in the Fire . Which I have spoke of in my History of Nature , in the Part that treats of Animals . In the Sea , the Sea Scolopendra , and VVater-Flea : In Fresh-waters , Leeches , Horse-Leeches , &c. In the Earth , Earth-VVorms ; between the Barks of Trees , VVood-Lice ; in Fig-trees , a certain Worm called Cerasses ; in the Service-tree , Red and Hairy VVorms ; in Vines , the Worms called Butyri , &c. III. The difference of Infects , with respect to their Parts . As to their Parts , some Insects have no feet , others have . All VVorms are without feet , as well those which are generated in the Earth , as Earth-VVorms ; as those that breed in the Bodies of Animals , especially in their Guts . The VVeevil , that breeds in Corn , another that is found in Beans , &c. Amongst those that have feet , some have 6 ; as the Pismire , the stinking Bug , the Flea and Leuse : Others have 8 feet ; as the Scorpion and Spider : Some 12 ; as that of Canker-worms , which is called the Geometrician , because it hath 6 feet in the fore-part of his Body , and as many in the hinder-part , and raiseth up his Back in the form of a Bow or Arch , going like one that measures Land : Some have 14 feet ; as all other sort of Canker-worms , which in the fore-part of their Bodies have 6 feet , and 8 in the hinder part . IV. Of the Generation of Insects . As to the Generation of Insects . The general Opinion formerly hath been , that they were not produced by a true Generation , but deriv'd their Pedigree from the Corruption of Animals , or other things . But Experience hath informed us of the contrary : For if we put a piece of Flesh into a Bottle , and then stop it ; the Flesh shut up there will never breed any VVorms ; but if we leave the Bottle unstopt , it will be full of Worms in less than 4 days , in the Summer time . We find also , that Butterflies , after Copulation , do lay a vast number Eggs , whence Canker-worms are hatched . V. All In●●●ts proceed from Eggs. So that we may rationally conclude , that all those Animals which seem to breed of themselves , and are found in Cheese , in Fruits , in Trees , in Flowers , and in Men , are the product either of Eggs , or such like Seed , left by other Animals . The production and process of which , may be fully illustrated by the Generation of a Canker-worm . For Canker-worms , as all other Worms , are generated from a Seed , or from the Eggs of Flies or Butter-flies , which by the heat of the Sun are hatched into Worms ; which , after they have changed their Skins several times , turn to Canker-worms , and then to Aurelia's or Bodies without motion , cover'd with a Shell , and in which no distinction of Parts appears ; and these again are turned into Butter-flies , or Flies . For it sometimes happens , that from the same Canker-worms and Worms , Aurelia's do proceed ; whereof some are turned into many Flies , and others into single Butter-flies . Out of a Worm therefore a Canker-worm is formed ; because , as a Plant doth not immediately bring forth branches , flowers , leaves and fruit , but by degrees , and each of these in their due Season ; so these Worms , by degrees , arrive to a further measure of perfection . For certain it is , that these Worms do often change their Skins . A Canker-worm therefore is changed into an Aurelia ; because the Trunk of its Body being swoln , and its Members almost formed , it so happens that all his Coats and Coverings begin to grow dry , and fall away of themselves ; as Flowers fall from Trees , and Feathers from Birds ; which when the Aurelia perceives , it either wraps it self in a Leaf , or with a glutinous Liquor proceeding out of its own Body , it most artificially weaves a strong Covering for her self ; where it continues shut up , as in an Egg , till it receive new Members , Head and Wings , and so become turned to a Butter-fly . VI. Flies and other Insects , proceed from Worms . And the same is to be said of all other Insects , that h●ve Wings . For Flies proceeding from Eggs or Seeds , by some Changes as have now been mentioned , do attain to the Perfection of their Nature ; for first they are Worms , then they turn to Aurelia's , and out of them Flies do proceed . For as a Canker-worm is to a Butter-fly , the same respect or relation a Worm hath to a Fly. And so likewise Lice , Fleas , Bugs , and other such like Insects , are generated of Eggs or Nits , or of other Insects already produced . For all those Animals which are commonly said to be generated out of putrid Matter , that is the Corruption of other things , are produced by Copulation ; as we see that Flies do Copulate when August is past , and thereupon they bring forth not Worms , but Eggs , which are found in great abundance upon the Leaves of Trees , in the appearance of a black smutty Matter ; which afterwards , by the Heat of the Sun are hatched into Worms , but such as are immoveable , and answering to the Aurelia's of the Canker-worms , which afterwards are changed into Flies . VII . How Canker-Worms become changed into Butter-flies . This Metamorphosis is not so difficult to conceive , if we suppose that those Parts which seem to be produc'd anew , are only made visible , as having before been hid . For when Canker-worms , by Example , become Butter-flies , it is easie to conceive , that the wings and feet they get , and which makes them appear to have been changed into new kinds of Things , are not newly produc'd Parts , by obtaining of a new form , which they had not before ; but that these Parts were indeed before , and only wanted a sufficient Magnitude to render them visible . After the same manner as it happens to Plants , where the flowers and fruits do not unfold themselves , but by degrees , and some time after the Leaves ; tho' all these Parts be at once actually together in the Plant , before they appear to be there . Insects therefore , as well as other Animals , are generated by the Coition of Male and Female ; which latter lays Eggs , out of which afterwards their Young are hatched by the heat of the Sun. VIII . How the Eggs of Insects are preserved in the Winter Season . But here it may be demanded , How these Eggs , whence we have said that Canker-worms and Flies are hatched , are preserved all the Winter over , so as that the next Year they may produce Animals . ALDROVANDUS , in his Treatise De Insectis , supposeth that those Eggs only are preserved , which are in those Leaves that are hid in the Cavities of the Barks of Trees , where they cannot suffer any damage from the Injuries of the Air or Weather . Thus I my self , saith he , have observed Eggs fastned to the hinder part of Fig-Leaves , whence , towards the End of August , little Canker-worms did proceed . They were wrapt up in a thin Downy substance , to preserve them from being hurt by the Ambient body ; which Canker-worms afterwards falling down , were not dash'd against the Ground , but continued hanging in the Air , like Spiders , by a very fine Thread . When they lay their Eggs on the Under-side of Leaves , they do so fold the said Leaves that no Rain can hurt them , making as it were a Covert over them . I have also twice taken notice , that a Canker-worm , which I found amongst Cabbage-Leaves , did first lay yellow Eggs , wrapt up in a thin Downy matter ; which , after she had laid them , became changed into an Aurelia of the same Colour , as she had before when yet a Canker-worm , viz. yellow , green and black ; and , which seem'd strange to me , afterwards flying Animals proceeded from these Eggs , so very small , that they could scarcely be discerned by the Eye ; such as are commonly found in the Bladders that are on the Leaves of the Elm-tree . So far he . Tho' there be some Country-men that tell us , That these Eggs are not only kept between the Barks of Trees , but that many Leaves fill'd with the Eggs of Butter-flies , are many times found hid in the Earth , where they are preserved all the Winter , till by the heat of the Sun , at the return of Spring , they be hatched into Insects . CHAP. XXIII . Of the Death and Destruction of Animals . I. Of t●●ee kinds of Death . AS in the First Chapter of this Part we reduc'd the Notion of Life to 3 Heads ; so here , that we may understand how Animals may be said either to dye or perish , 3 sorts of death or dying are to be distinguish'd . First , There is a Death of Simple Annihilation , which is oppos'd to the LIfe of Simple Existence : Secondly , Cessation from Operation , which is the Death that is oppos'd to the Life of Actuous Existence : And , Lastly , the Separation , or Dissolution of one part from the other , which is oppos'd to the Life of Existence with another . By the first manner of Death , those things dye , which by ceasing to exist altogether , fall into nothing : Things dye the second kind of Death , when they cease to act : And the third way , when their Parts are separated , and exist distinctly from one another . But forasmuch as no Substance can be annihilated , it remains only for us to enquire , how Animals come to cease from all Operation , and how the connection of their Parts comes to be dissolved . II. The Death and Perishing of Animals is designed by Nature as well as their Generation . But before I come to Treat of these , I shall first lay down this Truth , That Death is as much the intention and design of Nature , as Life is . For who will say , that Corruption is less Natural , than Generation ? For tho' nothing seems to dye without reluctance , and some force put upon it ; yet is not Corruption therefore to be accounted less Natural or disagreeing with the Laws of Nature . For tho' Corruption be contrary to particular Nature , as procuring its Destruction ; yet is it very consentaneous to Universal Nature , which never undertakes the Generation of any thing , without the fore-going Corruption of another , as not being able to create , or to produce a thing out of Nothing . Wherefore seeing , that the Beauty and Perfection of the World consists in Variety ; and that it is much more for the Dignity of the World , that many things in process of time should appear and act their Parts on this great Theatre , than to represent always one and the same Face of things : The Divine Wisdom hath so order'd it , that Old things should make way for New ones ; and that those things , which for some time have acted their Parts on the Stage of the World , should withdraw to make room for others . But if any one shall think it a hard case for him to leave this World , let him consider , that he himself could never have enter'd this World , but by others making room for him : For if all our Ancestors had been Immortal , they would have been increased to that number , that there would have been no place left for their Posterity . III. When and how Death happens to Animals . Having said thus much to comfort us , and make the state of our Mortality more tolerable , we now assert that Death happens to Animals by the extinguishing of the Fire , that is in their Hearts . For in the Hearts of all Animals , as long as they are alive , there is a kind of Continual Heat , which we before call'd a kind of Fire that is hot without shining , and which Physicians do own to be the Bodily Principle of all motion in the Members of Animals . And therefore no wonder , if this being once extinct , Life , Sense and Motion be likewise destroyed . IV. How this Heat comes to be weakned in the Body of Animals . For tho' this Native Heat be strong and efficacious at the beginning , yet in the process of Age it loseth strength , and grows weaker and weaker ; so that Animals , after they are come to their full growth , are at a stand , and soon after their strength decays ; and at last , by the defect of this Heat they dye ; as the flame of a Wick , for want of Oil is extinguish'd . But yet there is a difference betwixt the flame of a Lamp , and the Life of Animals ; because the former is continued , as long as it is supplied with Oil : But the Life of Animals cannot be maintained by perpetual Aliment , because Animals dye not for want of Aliment ; but because their Heat grows so weak , that it can no longer change the Food into the Substance of the Body . And therefore Physicians tell us , that the Heat which Nature hath afforded us , for the Maintenance and Support of our Bodies , doth conspire their destruction . For tho' it preserves us , forasmuch as by feeding upon Moisture , it affords strength and vigour to our Members ; yet at the same time it also lays the foundation of our Destruction , whilst by continual consuming of our Moisture it self becomes debilitated , without restoring , as much as it doth consume : And accordingly it follows , that when the Moisture is consumed , the Body must consume and waste likewise , and the Heat it self be extinguish'd . V. Why the utmost parts of the Body first grow cold in those that are ready to dye . Now that Death proceeds from the decay of Heat , daily Experience teacheth us in Dying persons : For we find that the Extream parts of their Body first begins to grow cold , till at last their Breast and Heart it self be deprived of it . For since the Heat which is disperst through the whole Body , proceeds from the Arteries , inasmuch as by thinning the Blood that is in them , it generates those Spirits which communicate Motion to all the Parts of Man's Body ; it must of necessity follow , that when the motion of the Arteries and Heart grows weak and languishing , this Weakness must first affect the Capillary Veins , as being both small and weak , and at the greatest distance from the Heart , the Fountain of Heat . VI. An Objection from the motion of Animals , after their Heart is taken out their Bodies . It may be you will Object here , That some Animals , after that their Heart hath been taken out of their Bodies , have notwithstanding performed the functions of Life . ARISTOTLE alledgeth the Example of a Tortoise , which when his Heart is taken out , doth nevertheless walk about , though be be but small , and of a weak and slow Body . Some Historians also make mention of some persons , who have spoke after that their Heart hath been pluck'd out of ther Bodies . Now , whence could these Actions or Words proceed , if the Heart , by its heat , were the sole Principle of all Bodily motion , and if it were the first thing living , and the last that dies ? VII . The Cause of this Motion . To which I Answer , That the Actions performed by Animals , after they are deprived of their Heart , are to be attributed to an Influence derived from thence ; inasmuch as by the Arterial Blood convey'd to the Brain , the Spirits for a short time continue their begun motion , and by entring the Nerves , produce a motion in the Tongue , or other Parts of the Body . Thus we find that Insects , after they have been cut to pieces , do for a long while continue their motion , by reason of the strength and vigour of their Animals Spirits , which cannot so soon exhale out of the Joynts of that Expansion , which is in them instead of a Back-bone , and wherein the said Spirits are contained . And as to that which was added , that the Heart is the first thing that lives , it is to be noted , that this is not to be understood of the time in which the Birth lives , shut up in the Mothers Womb ; but after it is come forth from the same . For it is manifest , that the Birth in the Womb , doth not so much live by a Life of its own , as by that of its Mother ; and that its Arteries do not beat from the motion of its own Heart , but by that of its Mother . Wherefore tho' the Heart be not the Principle of all motions , that are performed in the Body before the Birth ; yet is it the Principle of all those that are exerted afterwards . VIII . By what means Men that have been drowned , are restored to Life . The Natural Heat therefore last forsakes the Heart , whether in a Natural or Violent Death : For being the chief Principle of all Corporal motions , it is more strong and vigorous there , as in its Fountain , and makes the greatest Resistance against any Force put upon it . Thus one that hath been Drowned , if he be timely taken out of the Water , and laid with his Head hanging downwards , that by the voiding of the Water out of his Mouth , his Midriff may no longer be clogg'd by the distension of his Stomack from the great quantity of Water he hath taken down , and that by this means his Breast and VVind-pipe , being freed from that which stopt and opprest them , be restor'd to their former freedom , the Person returns to life again ; because there was still some Force remaining in the Heart , whereby it was able to recommence its former pulsation . In like manner , a Person that is starved with Cold , being timely restor'd to warmth , Recovers again ; because the Vapours , that were congealed in his Breast , begin to be dissolved and discust by the inward Heat , which was not yet wholly extinct , being assisted by the outward . IX . The difference between a Natural and a violent Death . Wherefore this is the only difference that is between a Natural and a Violent Death ; as by Hanging , Beheading , &c. that a Violent Death is performed in a moment , or a very short time : Whereas a Natural Death comes on by degrees , and by slow advances , dissolves the Tye that is between the Parts : But in both of them , the Heat and Fire in the Heart is alike extinguish'd , and takes its flight into the Aethereal Air , as the Ancients were wont to express it . Accordingly SENECA , in his 66 th Epistle , saith ; The Death of all Persons is alike ; tho' the ways by which it makes its approaches be different , yet it ends and terminates in one and the same thing . No Death is more or less than other ; for it hath one and the same measure and manner in all , that is , the termination or putting an end to Life . The Eighth Part OF THE INSTITUTION OF PHILOSOPHY . OF MAN , CONSIDER'D WITH Relation to his Body . CHAP. I. The Definition of MAN. I. The wonderful Composition and Structure of Man. WE are now come to MAN , the most Noble of all Living Creatures , besides whom the Philosophers do not esteem any thing Great that is in the World ; as containing in himself , whatsoever is in the Universe ; and therefore is commonly call'd , the Compendium or Abridgment of the whole VVorld , and the most VVonderful of all VVonderful things , as PLATO styles him . It admits a Query , Whether he may not be look'd upon as a Prodigy amongst all other Living Creatures , as consisting of such different Parts ; and more especially for the great Disparity that is between the Soul and his Body : So that it would scarcely be a greater Wonder , if an Angel should be joyned to a Beast or Light make an Alliance with Darkness . And therefore FICINUS , upon Plato Dialog . 1. de Legibus speaks thus : And because he had said , that this one Animal was composed of such different things , he not without reason subjoyns , that Man is a Miracle or VVonder amongst all other Animals ; herein imitating Mercurius Trismegistus , who calls Man , a Great VVonder , &c. But , to pass by the rest , why is Man such a VVonder ? Because forasmuch as he is Divine , it is a wonder that he should be affected with Mortal things ; and being Mortal , it is as great a wonder , that he should be taken with Divine things . II. Whether or no the Peripateticks do rightly define Man. Wherefore it hath always been look'd upon by Philosophers , to be a difficult thing to define Man aright , and to assign those Terms that might explain the Connexion of such different things , and exhibit a clear Image or Idea of him to the Understanding . The PERIPATETICKS , who conceit themselves to know the Nature of all Things , define MAN to be a Rational Animal , making Animal the Genus of Man , and Rational his Difference ; whereby he is distinguish'd from other Animals . But to speak the Truth , this doth not seem to be the true Definition of Man , if we will give heed to the Rules of a Right Definition ; the chief whereof is this , that it be Clear and Evident . Now it is manifest , that the word Animal , which they thrust into the Definition of Man , is obscure , and therefore cannot in the least contribute to the clear perception of him . For it is not manifest what the word Animal ( which they make the nearest Genus ) doth signifie , without reducing it to the more remote Genera of a Body , a Living and an Animated Creature : But now , the higher we climb in the Praedicamental Table , the more obscure Notions we shall meet with ; and therefore if the Praedicats of Animal be obscure , how will they be proper to explain and illustrate the Nature of Man ? Book 1. Part VIII . Chap. 1. G. Freeman I●vent . A. Yonder Guist S●●lp . To Ralph Macro of Clapton in the Parish of Hackney in the County of Midetesex , Dr. in Phisick . This Plate is humbly Dedicated by Rich : Blome IV. Neither is reasonable the difference of Man. Besides , the word Reasonable , which is the other part of the Definition , or the Difference , is ambiguous ; for by it must be either understood , that which is endued with knowledge ; and then the Difference will agree and coincide with the Genus , forasmuch as according to the PERIPATETICKS some Brutes , at least , are endued with Knowledge , and are not meer Engines as we take them to be , Or else by the word Reasonable is to be understood Discourse , Knowledge , as most of them hold , and so the difference of Man will be taken from an inferiour Attribute ; forasmuch as Man the further he attains to perfection , the less he makes use of Ratiocination or discursive knowledge ; and Wisemen , who are nearer to the nature of Angels , do more understand things without Discourse , than others do . Or lastly it imports a simple apprehension , whereby things are conceived , without any Relation or Reference to others , which since they allow to Beasts also , they will never be able to explain , what kind of knowledge it is they attribute to them , and how it is distinguishable from that which is peculiar to Man. V. A Rational Animal doth not perfectly explain the Nature of Man. This Definition also is contrary to other Laws of a true and Rightful Definition , in as much as it doth not perfectly unfold the Nature of Man. For seeing Man is compounded of 2 Parts extreamly different , viz. of a Soul and a Body , and that there is not the like cunjunction of parts to he met with again in the whole Universe of things , it appears very plain that the Essence of Man cannot be exactly defined , except this most observable composition be exprest in his Definition ; and forasmuch as that of a Reasonable Animal doth not include any such thing , it is evident that it doth but imperfectly declare the nature of the thing defin'd . VI. A Man is wrongly placed under the remote Genus of a Body . Moreover Man in the foresaid Definition is placed under the General Head , or notion of Body , when with better reason he ought to be rancked under that of Spirit ( for the Soul is the Principal part of Man , and if well considered , is more known than the Body ; for we may doubt of the Existence of Corporeal Beings , whereas we cannot doubt of the Existence of our Soul ) as in all other things the denomination is always wont to be made from the more noble part ; and if by evil custom , and the prejudices of our Infancy we have taken our Body to be our best and most noble Part , Philosophy ought to have corrected this mistake , and not to have cherisht and strengthned it . VII . Why in defining of man , we ought to have more regard to his Soul than to his Body . But you 'l say that Philosophers have thought good to define Man , rather by his more ignoble Genus , viz. Body , than by that of Spirit , because Man , as to his external parts and appearance , is much more like a Beast than an Angel , and that therefore it was more proper he should be ranged under the meaner Genus of Body , than under that more sublime of Angels . I Answer , that this is no better than a frivolous reply , as being not at all founded upon Reason , but Custom only , and the prejudices suckt in from our Infancy . For the question here is not about what objects our thoughts are most imployed , but about what they ought to be employed ; and that these are those things that are endued with understanding no Man will deny , these being much more excellent than corporeal things , and to which our mind , because of the affinity it hath with them , is most inclined , she herself being of an Intelligent or Thinking Nature . Now the reason why Men chiefly addict themselves to Corporeal and sensible Things , is because they think that their Nature or Essence , hath a greater affinity with Visible Things than with those that never fall under their Senses , and can only be reached by their thoughts , or intellectual faculty . Which Error ought certainly to be corrected by those who may glory of their being made after the Image and likeness of God. VIII . The true Definition of Man. We must therefore look out for a more accurate Definition of Man , and such a one , if I be not mistaken this is : A Man is a thing compounded of a Finite Mind , and a rightly disposed or framed Body . For seeing that Man is not a simple thing , but composed of both kinds , viz. of a Soul or Mind and Body , it is necessary that this notable composition which distinguisheth Man from all other things , should be exprest in the Definition by this word Compounded ; and by this means all the conditions of a good and lawful Definition are secured and preserved ; the First whereof is that it express and declare the Nature of the thing , and the several parts whereof it is compounded . For there is nothing to be found in Man , which is not exprest in this Definition . Secondly , that the Genus and Difference be rightly assigned ; for that Man consists of a well disposed or framed Body , this he hath in common with other Animals , and that he is endued with a Finite Mind , that is such an one as is not altogether perfect , he is distinguisht from God , who is the Infinite Mind . Thirdly , that the Definition be not more extensive than the thing defined , nor more contracted or narrow , but equal with it ; for it is manifest from Induction that every Man whatsoever is compounded of a Finite Mind , and a Body rightly disposed ; so that of whatsoever the thing defined is praedicated , of the same the Definition may be praedicated also . IX . What may be inferred or gathered from the Definition . From this Definition we may infer First of all , that Soul and Body are the parts of a Man ; as a part is taken for that , whereof any thing doth consist . Secondly , that the Union of the Soul with the Body , is the Form of Man ; since wheresoever that union is , the compound is likewise , as where it is not , the compound is not , viz. Man. Which Union of the Soul with a Human Body , doth consist in the mutual Action of the Soul and Body upon each other , as shall be shewed in the following Part. X. What a rightly disposed Body is . And whereas the other part of this Definition is a Body rightly disposed , we are to take notice that this disposition doth consist in such a Modification , whereby the body is fitted for an intimate union with a Human Soul. Wherefore every Portion of Matter , that is so modified , whether it be Organical or Inorganical , may properly be called a Human Body , since the Essence of Man wholly consists in the Union of his Soul with his Body , and that it will be his Body as soon as it is united to him . Neither is it any whit clear or evident that Organs are of absolute necessity to this Union ; for I can see no reason why an Inorganical Body may not be so disposed , as to be fit to receive a Soul for its Form. Neither can a Man , if we have respect to his bare Essence only , be said to be imperfect , because he is destitute of Organs , forasmuch as a Man that hath lost both his Arms and Legs , doth not cease to be a perfect Man for all that , as being no less a Man , than he who enjoys all his Members , because the perfection of a Man as such , consists in the union of his two Essential Parts , viz. of Soul and Body . And as his Soul is said to be perfect , because it hath that disposition which on its part is required for its union with the Body ; so that Body , whatsoever it be , provided it only have such a disposition that it may be united with a Soul , is to be called a perfect Human Body . But forasmuch as we here consider Mans Body in its Natural State , we shall describe it here as it is Organical , and consisting of all its Parts . CHAP. II. A Description of the External Parts of Mans Body . I. It is sufficient for a young Scholar in Philosophy to know the more principal parts of Mans Body . VERY wonderful is the Struclure of Mans Body , if we consider all its Parts , and the use or end for which they were framed : but because it would require too much time and pains , to give here a particular account of them all ; and because that belongs rather to a Physician than a Philosopher , I shall only touch at the more Principal Parts , passing by those which would rather confound first beginners than inform them . II. How many Similar parts there be in the Body of Man. For the better understanding of them , we must observe that the parts which constitute the Body of Man , are either Similar Parts , or Dissimilar . Similar are those whose substance is the same , and alike throughout : or which may be divided into Parts of the same nature and Denomination ; and of these 11 are reckoned up by Physicians , viz. Bones , known by their great hardness and firmness ; Gristles , which are the next in solidity and firmness to that of Bones , and of which the Ear consists . Tendons , which are the ends or extremities of the Muscles ; Ligaments , which approach to the nature of Tendons , and serve to join 2 solid parts together , viz. Bones to Bones . Fibres , which are as it were the Woof of the other parts . Membrans , which are thin and broad substances , serving for a covering to several parts : such as are the Membran or Skin that covers the Ribs , the Bladder , the Stomach . Arteries , which conveigh the Vital Blood from the Heart to all the parts of the Body . The Veins which conveigh the Blood back again from the parts to the Heart . The Nerves or Sinews which carry the Animal Spirits from the Brain and the Marrow of the Back Bone to all parts ; and the Flesh and the Skin . To which may be referred also the Fat , Nails and Hair , as being parts compleating the whole , and of a similar nature . III. How many Dissimilar Parts there be in Mans body . Dissimilar Parts are such as are made up of several Similar Parts ; or which may be divided into Dissimilar Particles , as a Hand , Foot which may be divided into Skin , Flesh , Bones , Veins , Arteries and Nerves which are of a different Nature and Denomination . And such are the Head , Neck , Breast , both the Arms , Legs , &c. IV. The Head. The first and Principal part of the Human Body is the Head , which contains the Organs of Sense and Motion , and is the House or Abode of the Soul it self . It is round or Sphaerical , but somewhat comprest or flatted , and longish : and for its better security , is all cover'd with Bones . And is placed in the highest part of the Body , according to GALEN , for the Eyes sake , which are placed there as in a Watch Tower to take a prospect of all objects round about it . V. The Parts of the Head. The Head is divided into the Hairy part or Scalp , and that without Hair , called the Face . The Forepart of the Hairy Scalp , from the Forehead to the Sutura Coronalis , is called Sinciput , that is , the Forepart of the Head ; and that which reacheth from the Sutura Lambdoidea to the first Joint of the Neck , is called Occiput , or the Hinder Part of the Head ; the middle and Gibbous part between both these , is called Vertex or the Crown of the Head. The part without Hair , that is , the Face , hath also its several parts , the Forehead , or superior part , which bears the Signs of the Mind ; and the Inferiour in which are the Organs of the Senses , as the Eyes , Nostrils , Ears and Mouth which hides the Tongue . VI. The Membrans inwrapping the Skull . There be two outward Membrans that encompass the Skull , the Pericranium or Skin so called from its going about the Skull , which is a soft and thin Membran ; and the Periostium , which is a most thin nervous Membran , so closely joined to the Pericranium ; that they seem only to constitute one Membran . To which are conjoyned the Inward Membrans that infold the Brain , which are likewise 2 , viz. a thin one , that immediately covers the Brain , and is called Pia Mater , and a thick one , which is called Dura Mater . They are commonly called Meninges , and by the Arabian Physicians , Matres or Mothers , because they supposed all the Membrans of the Body derived and propagated from these . VII . How the Blood comes to them . To these Membrans the Vital Blood is conveighed by the outward Branch of the Arteris called Carotides , and that which is left after the Nourishing of their parts , is by small Veins sent back to the External Jugulars . Some believe that these Arteries , passing through the little holes of the Skull , do penetrate and pass into the great Bosom or cavity of the Dura Mater : tho' this doth not seem probable , since they tend only to the Diplois , and in it do vanish or disappear . VIII . What the Neck is . The Neck is that part of the Body which is between the Breast and the Face , and supports the Head , being called Collum , à Colendo . Because it is commonly much adorned . It is somewhat longish , to assist the tuning of the Voice . Accordingly those Animals that utter no Voice , as Fishes , want a Neck ; and those that have a strong voice , have the longer Necks , as Cranes , Geese , &c. The hind part of the Neck is called Cervix ; and the forepart Guttur or the Throat . The Neck consists of 7 Joints , which are the upper part of the Spine . In the forepart of it are 2 great Pipes , whereof the one is called the Wind-Pipe or Rough Artery , because of its unequal Gristly Rings , and serves to conveigh the Air to the Lungs , and from thence out of the Body . The other inward Pipe is the Gullet , by which the Meat and Drink is conveyed from the Mouth to the Stomach . IX . The Breast . Next to the Neck , the Breast begins , which is that part of the Body which contains the Heart , Lungs and Vital parts : Its hind-part comprehends , besides the Shoulder-blades , the Back , and 12 Joints of the Spine ; from whence 7 Ribs do proceed , having their Ends cloathed or cover'd with Gristles , which are called the true or perfect Ribs ; because they Circle-wise compass the hollow of the Breast , reaching to the Grisly or Spongy Bone called Sternum , and ending downwards in the Gristle that resembles the figure of a Sword. In the Middle of the Breast are 2 Dugs or Paps , on each side one ; situated there , First , in order to their being near the Heart , to receive heat from thence : Secondly , for Comliness sake : Thirdly , for the more convenient Suckling of Children . They are 2 in number ; not for to Suckle Twins , as some will have it , but to the end that if one of them should come to any hurt , the other might supply the place of it , and perform the Function alone . X. The Dugs consist of two parts . The Dug is divided into the Nipple , and the Pap it self . The Nipple is a Spongy kind of flesh , and therefore is at sometines more loose and flaggy , and at other times more stiff , especially when suck'd or touch'd . The Dug , or Pap it self , inwardly consists of a Membran , Vessels , Kernels , or rather Kernel-like Bodies , and Fat. In Men the Dugs are not so great or prominent as in Women , theirs being not commonly designed for the Generation of Milk ; yet to shew the Equality of kind i● both Sexes , it was not fitting that Men should be altogether without them . XI . The Belly . Under the Breast is the Belly , whose fore-part is called Abdomen , and in its Middle is the Navil ; the upper part whereof is the Hypochondrium , which Name is also given to its Sides . Beneath are the Groins , and the Parts designed for Generation . The Upper-part of the Abdomen , reaching up to the Midriff , is the Stomach , which lies Cross-ways , and which having received the Food from the Mouth , by means of the Gullet , doth digest it into Chyle ; and afterwards sends the purer part of the Chyle , by the Subclavial Branches of the Vena Cava , into the Vena Cava it self . XII . The Back-parts of the Body . The Hinder-parts of the Body are the Shoulder-blades , to which the Shoulders are joyned , and to them the Arms with the Elbow . For by the word Arm , we understand all that part which reacheth from the Shoulder , where the Collar-bones end , to the Fingers ends ; tho' commonly the Hand is not comprehended under the word Arm. The Arm consists of 3 conspicuous Parts , viz. the Upper-part of it called Lacertus ; the Middle-part of it , from the Elbow to the Wrist , called Cubitus , and the Hand . The Upper-part of the Arm hath one only Bone ; the Middle-part hath two Bones ; the Lower , which is called Ulna or Cubitus , and the Upper called Radius . The Hand also consists of 3 Parts , viz. the Wrist , the part between the Fingers and the Wrist , called Metacarpium , and the Fingers ; the Fingers have each of them 3 Joints . The Hands are 2 , the Right and the Left. Next to the Shoulders are the Loyns , and near to them the Os Sacrum , distinguish'd as it were into 5 Bones , having on each side of it the Bone Ilium , jetting out like a Bow , and the Hip-bone ; and under these the Buttocks . XIII . The Flesh . The use of the Flesh is , to cover the Bones and Members of the Body , more especially the Inward parts , and to hinder them from falling asunder . It is made up of the Substance of the Blood , by the coagulation of its thicker Parts . The Fat in its nature is like to Flesh , and proceeds from the same Principle . It s Function is to preserve the Natural heat , to defend the Parts it covers from Outward hurts , and by moistning and smoothing the dryer Parts of the Body , to assist and promote motion . XIV . The Differences of Flesh . Flesh is fourfold ; Viscerous , Membranous or Skinny , Glandulous , and Musculous , or that of the Muscles . The Viscerous is that whereof the Inwards consist , and is nothing else but an affusion of Blood , which supports the Vessels of the Inwards , by filling the empty Spaces that are between them , and assists the Concoctions and Separations that are made in them . The Membranous Flesh is nothing else , but the Fleshy Substance of every Membranous part ; as of the Gullet , the Stomach , the Guts , the Womb , and the Bladder . Glandulous Flesh is that of the Kernels ; the use whereof is either to soak up the superfluous Humours ( for they are of a Spongy Substance ) as those in the Neck , under the Armpits , and in the Groin ; or they are in order to the moistning of the Parts , for their more ready motion , or to prevent the dryness of the Parts . The Musculous , which GALEN calls the fibrous or stringy Flesh , is that soft and red Substance , which is Flesh , properly so called . XV. The Bones . The Bones are the strength and support of the Flesh , and are the insensible Parts of the Organical Body of an Animal ; as also the hardest and driest , containing the Marrow within them . There are 304 of them in the Body of Man , which are of diverse figures , according to their different uses ; for some of them are round , others flat ; some sharp , and others blunt , &c. It is a mistake to think the Bones to be without Blood ; for they are Red in the Womb before the Infant is born , are found to have small Vessels in them , from whence Blood gusheth forth ; and when they are broke , the Callous matter that joyns them again together , sweats Blood. The Muscles follow the bigness and figure of the Bones , to which they are joyned ; and move those Members of the Body , to which they are particularly destinated . The Nerves or Sinews have fibres or strings , extended long-ways , and are the Instruments of Sense and Motion . XVI . The Feet . Lastly , This whole Bulk is supported by the Feet , assisted with the Leg and the Thigh , with the Knee that joyns them both together . The Thigh hath only one Bone in the Upper-part , whereof , besides the round Head , inserted in the hollow end of the Huckle or Hip-bone , there is a kind of Neck , whence 2 Ends shoot forth , which are called Trochanteres : And in the Lower-part this Bone is so joyned with the Chief-bone of the Shin or Leg ▪ that in the foremost Hollow of the jetting out of the Bone , there is a place for the Bone , called the Knee-pan , which hinders the Leg from bending forwards . To the Lower-part of the Foot 3 parts concur , viz. the Heel , the Sole of the Foot , which is as it were its Back , and is made hollow in the midst , to the end it might the more firmly stick to the Ground in going ; and the 5 Toes , which are very helpful to progressive motion . CHAP. III. A Description of the Principal Inward Parts of the Body of Man. I. The Brain , which is the most principal Part of Mans Body , examined . THe Skin being pluck'd off , the Flesh is more distinctly perceived ; which is not a continuous Mass , but distinguish'd into several Muscles . But the chiefest and most principal Part that presents it self , is the Brain ; which in Man is the greatest in Bulk , with relation to other Animals . The Bark , or outside part of it , appears distinguish'd into a thousand turnings and windings , not unlike the Cronckelings of the Guts , with far greater variety than in any other Animal . All which crooked Windings are covered with a thin Membran , and are moistened with innumerable Vessels ; which being in a most wonderful manner woven together , are dispersed every way , and in some places penetrate the inward Substance of the Brain . Tho' indeeed all the Veins and Arteries that penetrate the Substance thereof , are but small and few ; but are more copious in the Cavities or Ventricles of it , and other places which are cover'd with the Pia mater or thin Meninx : For that Membran doth not only separate the Brain from the more inward Part that lies under it , but distinguisheth it also in divers parts , and invests all the deep surrows and foldings of the Bark or outward part of the Brain , conjoyns the more prominent parts of them , forms almost innumerable Cavities , and every where twists most wonderful pleats and textures of the Vessels . II. The Brain is divided into two Parts . The Brain is divided into 2 parts , viz. into the Fore and Hind-part : The Fore-part , which is much bigger than the other , is chiefly called the Brain ; the Hind-part is called Cerebellum or the Little Brain ; and tends downward , being continued to the Marrow of the Back ▪ bone , and cover'd with both the Meninges . Within the Substance of the Fore-part are two Cavities , so placed as to answer to a third Cavity in the Hind-part : And above the Passage , whereby the foresaid 2 Cavities have entercourse together , is the famous Kernel called Glandula Pinealis , from its figure , resembling that of a Pine-Apple , and Conarion from its Conical figure . The bottom of this Gland or Kernel is fastned to the Brain , whereof it is a part , and is seated in the very midst of the two Cavities This Kernel hath that of Singularity , that it is one only , whereas all the other that are found in the Brain are double . III. Of the seven pair of Nerves , derived from the Brain , according to the Opinion of the Ancients . The Ancients were of Opinion , that 7 pair of Nerves only were derived from the Brain ; whereof the first , were the Optick Nerves ; the second , those that help to move the Eyes ; the third and fourth , appropriated to the Taste ; the fifth , to the Ears ; the sixth was , that which is called the wandring Pair ; and the seventh and last , those that move the Tongue . But in this enumeration , they have left out that Pair , which being convey'd to the Nostrils , are the Instruments of Smelling , and have divided the third Pair into two ; and the fifth Pair , which they suppose single , is double : So that whereas they make but 7 , others 8 , and others 9 Pair of Nerves , we make 10 in all . The first Pair are appropriated to the sense of Smelling , the ends whereof reaching from the Brain towards the Nostrils , are called Processus Mammillares . The second is the Optick pair , subservient to the Sense of Seeing . The third , moves the Eyes . The fourth , serves to turn and writh the Eyes variously , suitable to the diversity of Passions that assail us . The fifth is , that by which the Tongue doth taste . The sixth is conveyed to the Palat , for the same purpose . The seventh is lost in the Muscle of the Eye , called the Abductor or Drawer aside . The Eighth assists the Drum of the Ear , in its dilatation or expansion . The Ninth pair , which is called Wandering by others , is that which furnisheth all the Inward parts , situate in the middle and lower Belly . The Tenth and last Pair is by strong Membrans , joyned with the former Pair , for the strengthning of them . IV. Several Pairs of Nerves proceed from the Pith of the Back-bone . But forasmuch as the pith of the Back-bone is nothing else , but a Continuation of the substance of the Brain , it is certain that from the same several pairs of Nerves do proceed ; viz. 7 to the Neck , 12 to the Back , 5 to the Loyns , 6. to the Os sacrum ; and all these Nerves are nothing else , but the continued Substance of both the Meninges or membrans of the Brain , there being none amongst them that are not twisted of them both . These Nerves proceeding from both sides of the Pith of the Back-bone , are called Pairs , as being always double . V. The Heart . In the Breast hangs the Heart , of a Pyramidal figure , resembling a Pine-Apple , with the Point of it inclining towards the Left-side ; so as that the Left-part of the broad End , which is the beginning of the Great Artery , is situated much about the Center of the Chest. The Greatness of the Heart in Man , proportionably exceeds that of other Animals , and commonly weighs about 7 Ounces , being about 6 Finger-breadths long , and 4 broad . Not but that the bigness thereof sometimes varies . VI. Of the Dilatation and Contraction of the Heart . In the Heart are 3 sorts of Strings or Fibres , some Transverse or Cross-wife , others Crooked or Oblique , and a third sort that are Strait , by which the dilatation or swelling of the Heart , when the Point of it is drawn up towards the broad End of it ; and the Contraction whereby the said Point is withdrawn from the basis or broad End of it , are performed . There be 2 Ventricles or Cavities in the Heart , which are separated from each other by a part of the flesh of the Heart , called the Septum medium , or the middle partition Wall , the Right Ventricle being more ample and large than the Left. Two very large Channels answer to both these Ventricles , to wit ; the Vena Cava , which is the principal Receptaele of the Blood , and is as it were the Trunk of the Tree , whereof all the other Veins are the boughs and branches ; and the Arterial Vein , which ariseth from the Heart , and after that it is come forth from thence , divides it self into many branches , which are afterwards dispersed through the Lungs . In the Left-side there are likewise 2 corresponding Channels , as large as the former , if not larger , viz. the Venal Artery , which is derived from the Lungs , where it is divided into many branches , which are intermixed with the branches of the Arterial Vein and the Wind-pipe , by which the Air we attract doth enter ; and the Great Artery , which proceeding from the Heart , disperseth its branches throughout the whole Body . Each of these Cavities have 2 Openings , placed towards the basis or broad End of the Heart : And in the entrance of these Openings , are some little Skins , which like so many flood-gates do open and shut 4 Mouths or Orifices , that are in both those Cavities ; viz. 3 in the entry of the Vena Cava or hollow Vein , which are so placed , that they cannot hinder the Blood they contain , from flowing into the Right Ventricle of the Heart , tho' they hinder any from coming out thence . 3 in the Entry of the Arterial Vein , which are ranged the quite contrary way , so as that they suffer the Blood , contained in that Cavity , to pass to the Lungs ; but by no means will suffer that which is in the Lungs , to return thither again . And so likewise there are 2 more in the Orifice of the Venal Artery , which permit the Blood to pass from the Lungs into the Left Ventricle of the Heart , but hinder its return thither again . And 3 at the entry of the Great Artery , which suffer the Blood to come from the Heart , but hinder it from returning thither again . VII . The situation of the Heart , in the Breast . The Heart is enclosed in a Nervous membran , called Pericardium ; where it swims in a Liquor not much unlike to that of Urin ; the broad End of it taking up the Center of the Breast , whilst the Point of it sways downwards , to the Left-side of the Midriff . VIII . The Lungs . The Lungs are a Spongy substance , of a whitish or pale red Colour , and are divided in the Right and Left part by the Mediastinum , or the membran that divides the Breast , from the Throat to the Midriff , into 2 Bosoms ; both which Parts are distinguish'd into several Lobes or Lappets , in order to their better covering and surrounding of the Heart , which is placed in the midst of them . In that part of the Mouth which is at the Root of the Tongue , is a Channel called the Wind-pipe , which passing downwards is divided into many little branches , which are disperst throughout the whole Substance of the Lungs , in the same manner as the Venal Artery , or the Arterial Vein . This Wind-pipe receives the Air that is taken in by breathing ; and because the membran thereof is so hard and stiff , that it cannot easily be comprest or clos'd together , it continues always full of Air , and by this means causeth the great Lightness of the Lungs . Our Meat and Drink cannot pass from our mouth into the Gullet , without passing over the Mouth of the Wind-pipe , tho' nothing can fall into it , because of a little Valve which covers it , whenever we swallow any thing . The Lungs also have their Dilatation and Contraction ; their Dilatation being caused by the Air entring into their Substance through the Wind-pipe ; and the Contraction by the expulsion of tt . IX . The Midriff Under the Lungs and the Heart is placed the thick membran , called the Diaphragm or Midriff , which separates the Breast from the Belly . It hath 2 Holes , through which the ascending Hollow Vein , and the Gullet which goes down to the Stomach , do pass . The Midriff lends also its assistance to the function of Respiration , to which it contributes rather , as it is a Musculous membran , than a Muscle . X. The Liver . Under the Diaphragm , the Liver is placed on the Right-side , and the Spleen on the Left. The Liver in Man , as well as in most other Animals , seems to be nothing else but Clotted blood , of a Reddish colour . Tho' there be some Animals that have it of a green , others of a yellow , and others of other Colours . The Ancients were of Opinion , that the Blood was prepared in the Liver , and that the Chyle was there turned into the form of Blood. But the contrary has been since made out , it being no longer question'd now , but that the Chyle is conveyed from the Receptacle of the Lacteal Veins upwards , to the Subclavial branches of the Hollow Vein , and thence into the ascending Trunk of the said Hollow Vein , whence it is carried together with the Blood , returning from all the parts of the Body , into the Right Ventricle of the Heart , without passing the Liver . The Gall-bladder is joyned to the Liver , a small Channel proceeding from it , which becomes immediately parted into 2 , whereof the one bends downwards towards the Liver again , and enters it ; whereas the other , called Choledochus , is inserted into the lower end of the Duodenum , whither the Gall is conveyed , through a very little and almost insensible Orifice . XI . The Spleen . The Spleen is situated on the Left-side , under the Midriff , between the Stomach and the Ribs . It is of a Spongy substance , cover'd with a thin membran , received from the Peritonaeum or Inner-rim of the Belly . It s more prominent or gibbous part is fastned to the Midriff ; which is the Reason why those that are diseased with a Schirrus , or any other swelling of the Liver , do complain of a difficulty of breathing . It abounds with a thick dreggy Blood , and is fastned to the Stomach and Back , by means of the foresaid membran , and hath a communication with the Heart by certain Arteries and Veins . The Spleen is almost as long again as it is broad ; the Upper-part of it butting out like a Bow , the Lower-part of it ending in an obtruse Angle , and in the midst somewhat hollow and deprest . XII . The Stomach . Betwixt the Liver and the Spleen lies the Stomach , into which all our Meat and Drink is conveyed through the Gullet . It hath 2 Orifices , the one whereby it receives in our Nourishment , which it dissolves and turns into Chyle ; the other called Pylorus , by which it thrusts it down into the Guts . XIII . The Guts . For the Guts take their rise or beginning from the neather Orifice of the Stomach , and after many windings are terminated in that part , by which the grosser Excrements are voided . To speak properly there be no more than one Gut , to the different parts whereof Anatomists have assigned different Names . That which is next to the Stomach they call Duodenum , the extent of which is not above 12 fingers breadth : The second is called Jejunum , from its almost continual emptiness : The third is called Ilium , from its various windings : The fourth , Colon , whence the Disease called the Colick takes its Name : The fifth is a little Appendix betwixt the Ilium and Colon , which is called Caecum , or the Blind-Gut : And the sixth Rectum , or the Strait-Gut . The 3 former of these are called the thin Guts , and the rest the great or thick Guts . XIV . The Mesentery . The Mesentery is a Membranous expansion , interwoven with Kernels and Fat , placed at the back-part of the Guts , and with its Center or narrowest part tied to the Loins ; but with its Circumference infolding all the Guts , and fastning them to the Back . It s figure is almost Circular , so as that its compass answers to the length of the Guts ; but yet is so framed and folded , that it keeps within narrow Bounds . XV. The Caul . The Caul is another Membranous expansion , consisting of a double membran , distended to an Orbicular figure , like to a Faulkners Pouch , interwoven with many Arteries and Veins , and great store of Fat , deriving its 2 wings or foldings from the Stomach , Liver , Spleen , the Rim of the Belly , and the Gut Colon ; and not only covering the Guts , but following the windings and turnings of them ; so that with regard to its situation it may well be called Epiploon , that is , swimming on the top , such being the situation of it with respect to the Guts . XVI . The Womb. The Womb , which is also called the Matrix , is an Organical part , serving for Generation , situate in the lower part of the Belly , betwixt the Bladder and the Strait-Gut , lodged in a strong Bason , made by the Bones Ilium , Coxendix , and Sacrum ; which Bason or Hollow is larger in Women , than in Men , in whom also when the time of their Delivery is at hand , it is yet further enlarged by the plying and giving-way of some of the strong Ligaments about the Bones Sacrum and Pubis , and by the starting back of the Bone called Coccyx , to make way for the Birth to struggle out of his Prison . XVII . The Kidneys . Besides these Parts already mentioned , there are also 2 Kidneys that are fastned to the Joints of the Back-bone . Their Substance appears like to that of a curious Sponge , and in each of them is found a certain Cavity or Hollow , called the Dish or Bason , which is generally fill'd with Urin. XVIII . The Ureters . The Ureters are 2 , viz. on each side one , carrying the Urin , that hath been separated in the Kidneys to the Bladder . They are nothing else , but an innumerable company of small Nervous fibres twisted together , and therefore no wonder that they are so exceeding sensible ; for as soon as any one of their finest Strings is moved , all the rest are shaken and tremble , whence there ariseth in the Soul an Idea of the sharpest Pain . XIX . The Bladder . Anatomists commonly attribute but 2 Coats or membrans to the Bladder ; but if they be viewed with a Microscope , we shall find them to be many more , even to the number of 20. The Bladder is the receptacle of the Urin , conveyed through the Ureters from the Kidneys ; which afterwards by the contraction of the fibres of the Bladder , are by the Urethra or Urinary passage evacuated . XX. The Testicles . The last Parts to be consider'd , are the Testicles , which are Vessels design'd for Generation , tho' it may be doubted , whether the Generation of Seed may be wholly attributed to them ; because there was never found any perfect Seed in the Testicles of the most Libidinous Animals . Yea , many do witness , that Bulls , Horses , and other such like Robust Animals , have generated their Like for many years together , after their having been gelt , and that they are not robb'd of their Prolifick virtue , except their Spermatick Vessels be taken away together with their Testicles . Wherefore it seems more probable , that the Seed is produced in the little Bladders , Kernels , and Pores , that neighbour upon the Bladder and the Womb. But we leave this to be determin'd by Physicians . CHAP. IV. Of the Forming of the Birth in the Womb , and of its Animation . I. Whether the Seed in Generation , proceeds from both Sexes . THe Common Opinion is , that the Matter whereof the Birth is formed in the Womb , doth consist of the Seed of both Parents , the Female Blood being mix'd with it : Nor indeed have the Ancients question'd , but that the Woman doth contribute her part of Seed to the Conception , and efficiently concur to Generation ; for both Sexes seem to have like Instruments for the generating of Seed . The Women have their Testes , in which the Blood is strained and purified , and a serous and thickish white Matter is squeezed out of them , which seems to be design'd for generation . Besides , we find that the Birth resembles the Mother , as well as the Father ; which we cannot well conceive how it should be , if both of them did not contribute Seed to the production thereof . II. The Seed flows from all parts of the Body . But to the end we may understand by what Artifice an Animal comes to be formed , from a Moisture without all Form , so as to bear some resemblance with the Principle from whence it did proceed ; it is commonly supposed , that the Seed both of Male and Female flows down from all their Parts , so as that there is no Member in their whole Bodies , whence some part of the Seed is not derived . For as the Serous humour is by the Veins separated from the whole Body , and through the Vessels call'd Emulgentes carried to the Kidneys and Bladder , in which latter place it is kept till it be voided : In like manner , say they , seeing that 2 Veins and 2 Arteries enter into the Testicks , why may not the Seminal particles flow from the whole Body into them , and from them into the Vessels destinated for their reception ; and this not slowly and by degrees , but in a very short Space , wherein the whole Body is powerfully stirr'd up to an excretion or separation of what is most Spirituous in all the Parts of the Body ? III. Proved by Examples . Many Arguments might be alledg'd to prove this Point ; but there are some Examples thought to be so clear and evident , as to supersede the necessity of many Proofs : A Cat , whose Tail was cut off when she was but young , litter'd Kitlings , whereof some had Tails , and others wanted them : And a Bitch , that was wont to bring forth sound Puppies , having broke her Leg , did ever after bring forth lame Puppies . Now to what can this resemblance of Puppies , with their Dams , be imputed , but because the Seed is conveyed from all the parts of the Body , so that perfect Births are born of sound and perfect Parents , and maimed and defective from such as are so . And if it sometimes happens , that whole and sound Births do proceed from maimed and defective Parents , this must be ascribed either to the Soundness of one of the Parents , or to the great Vigour of the Spirits . However , when it so happens that maimed Births proceed from maimed Parents , no other Reason seems so satisfactory , as that which hath been alledged . IV. How the Birth is formed in the Womb. From what hath been said , may in some sort be understood , how the Birth comes to be formed in the Mothers Womb ; because the insensible Parts of the Male and Female Seed have already received such a Configuration in the Body of the Parents , that they are no sooner received into the Womb ; but being there intangled together , and agitated by heat , they are turned into a rude delineation or Rudiment of the Animal , from which afterwards all the parts are perfected and compleated . For those parts which before , for example , did belong to the Head , Belly , &c. become now so disentangled and separated from others , so as to be now at liberty to run together , and from the several distinct parts of the Body ; so that those parts which proceeded from the Brain , do now unite to constitute that part , those of the Eyes , the Eyes and so for the rest . Much after the same manner as the like grains of Sand , and the filings of Lead do come together , and make several heaps : as when we fasten a Pipe to a Bladder , and through it cast Earth , Sand and Filings of Lead , and having poured water upon them , if then we blow through the Pipe , all these matters will be variously mingled and tost together , but as soon as the said agitation ceaseth a separation is made , the Lead setling with the Lead , the Sand with the Sand , &c. and in this condition we shall find them , if after the drying up of the water we shall rend the Bladder , that is , we shall find the like particles to be gathered to their like . And after this manner we may conceive that the particles of the Seed become so disposed as to make the first Rudiment of a Birth . V. How the first Rudiment of the Birth comes to be like Man. If you demand how it can be that from such a small quantity of Insensible particles , a Body should arise , resembling the great Body from whence it proceded , and representing every one of its Parts and Members . It is Answered , that this is done much in the same manner as we find that a very little Image in a Convex Glass represents a Man ; for this Image is therefore so little , because only a few rays are reflected to the Eye , from the several parts , many of the Rays rebounding elsewhere by reason of the convexity of the Glass , which makes that only a few Beams from each part do reach the Eye , which meeting in the Retina or Network Membran of the Eye , do represent a very little Man : In like manner , the first Rudiment of a Human Birth in the Womb , is indeed very little , and yet resembles the great Body , exactly as to the number of its parts , tho' not as to the quantity and bulk of them . VI. The Time of the Formation of the Birth . Physicians are at some disagreement about the time of the formation of the Birth . HIPPOCRATES Lib. 1. de Carn . tells us that the Seed being received into the Womb , by the seventh day hath whatsoever it ought to have , and that if an Abortive at the end of this term , be put into the water , and accurately viewed , the rude draught of all the parts will be discernible in it . Others allow a longer time for this forming of all the Parts : ARISTOTLE Lab. 7. Hist . Animal . saith that the Body of the Birth on the fortieth day , consists , as it were , in a Membran , which being rent , the Birth appears of the bigness of a great Pismire , in which all the Members may be distinctly seen . VII . What the Architectonick or Plastick virtue is . Now what this Plastick or formative virtue is that lies hid in the Seed , which begins and carries on the formation of the parts , all are not agreed . GALEN sometimes calls it Nature , sometimes Native Heat , sometimes the Inborn Temperament , and sometimes Spirit , which in his Book de Trem. & Vigor . he determines to be a substance moveable of it self , and always moving . Aristotle , Lib. 2. de Generat . Animal . Cap. 3. distinguishing betwixt the Heat or Spirit of the Seed , and Nature , saith that the Plastick Virtue , is the Nature that is in the Spirit of the Seed . AVICENNA and others following AVERRHOES call it a Coelestial Power , or Divine Virtue . Some admit no other Soul in Man but the Rational , and maintain that it alone , out of convenient seminal matter offered to her , doth perfect all the Lineaments of the parts , and that she is the Architect of her own House . Others affirm that there is a Vegetative or Vital Soul in Man , which is Mortal and distinct from the Rational , and that this Soul is the chief , yea sole Operator in the forming of the Birth , and the very same which some call the Plastick or Architectonick Virtue . VIII . What Parts of the Body are first formed . The Antients differ also , as to what parts of the Body are first formed . ARISTOTLE was of opinion that the Heart was first formed , as being the Fountain of Heat , and the Principle of the Animal Life . For it seems very consonant to Reason , that what dies last , should have the precedence in formation . Others suppose that all the parts of the Birth are formed at once , and contend that there is no reason why the Heart should have any such Praeeminence allow'd it . For why , say they , should the Heart be formed before the other parts , seeing that in the framing of the Members , the Birth doth no more stand in need of the Influence of the Heart than of the Sense of the Brain ? Nature digests the whole Mass of the Seed with one and the same Heat , which equally penetrates all the parts of it ; so that when she begins to frame a Body , she doth not confound the particles of the Seed , but distributes them all into their several places . Which distribution of the Seed cannot consist with a successive Generation of Parts ; seeing it is equally requisit , that a part fit to form the Brain should be taken from the Heart , as it is that the Brain should communicate a part proper to constitute the Heart : Besides , Nature might be accused of Impotence , if she could not perfect and compleat those things together at once , which she hath begun at once . IX . All Parts of the Birth are formed together , notwithstanding that some parts be seen before others . Neither is it contradictory to this assertion , that some parts appear to us before others , because this is only to be attributed to their greater bulk . For the greater parts seem by Nature to be before the less ; but we cannot therefore infer from hence that they exist before them ; because all the Members of the Body are not perfected and compleated at the same time , but according as they are more or less nourished or heated . Wherefore HIPPOCRATES Lib. 1. de Diaeta saith that all the Members are distinguisht and encrease together ; not one before or after the other ; tho' those parts which be greater by Nature than others , do appear before the lesser , but do not exist before them . For the order of Nature is , that the more worthy parts , and those that are designed for the use of others , should appear first , and therefore it is that the upper parts appear before the lower , and those which are formed of the Seed , before those that are formed of the Blood. But yet it sometimes happens , that the more imperfect parts are framed before others , as is manifest in the Navel , which is perfected before either the Heart or Brain . X. This further proved from a Chicken . This may be proved by Experience ; because never was there any Birth found , in which the Heart or any other part was formed , before the other parts were framed also . For tho' in the forming of a Chicken , about the four●h day , the Head and Body of the Chicken begin to appear , when neither Wings or Legs are yet distinguishable , yet even at that time the Rudiments of those parts are there , tho' so little as not discernible by the bare Eye . And thus much concerning the opinion of the Antients about the forming of the Foetus . XI . Dr. Harvey's opinion concerning Conception . Dr. HARVEY was the first of Modern Authors who maintained , that the Masculine Seed did not concur to the constitution of the Birth ; because in the many Animals he dissected after Copulation , he never found any Seed in their Wombs , and therefore was induced to believe , that the Seed of the Male did never reach the hollow of the Womb , or if it did , that it never staid there , but soon after slipt away : and accordingly he supposed that the Male-seed , only by a prolifick breath or contagion , doth make the Female conceive . Secondly , That the Natural Conception in the Womb , happens much in the same manner , as doth the Animal Conception in the Brain : for as we , after having framed an Idea in our Brain , do express the likeness of it in our Works ; so likewise the Idea or Species of the Begetter , tho' the Geniture or Seed be absent , by the help of the Formative Faculty , doth beget a like Birth , by impressing the Immaterial Species it hath upon its work . XII . How Conception is performed according to Steno , and other later Physicians and Anatomists In the year 1670 , STENO a famous Anatomist , discovered that the Female Testicles so called , are nothing else but Ovaria , that is , Receptacles of Eggs , which hath been since confirmed by the Writings of KERCKRINGIUS , SWAMMERDAM , GRAAF , GASPAR BARTHOLINUS and others . And accordingly the received opinion now is , that the Birth , with all its parts , lies hid in these Ovaria , tho' not to sensible appearance . And therefore maintain that the Birth is not formed of the Seed , but that the most Subtil Spirit only of the Masculine-Seed is conveighed through the bottom of the Womb and the Tubes or Trumpets ( so called by FALLOPIUS for their resemblance with that Instrument ) to the Female Ovarium , where it impregnates one of those little Eggs , that is , causeth or excites a Fermentation in it , which makes the Egg to swell , and to require a greater space , by which means it cracks the common Membran of the Ovarium , and through the slit of it , is driven into the Fallopian Tubes by those shaggy edgings which are at the end of the said Tubes , and by Anatomists are called the Leaf-work Ornament , being blown up and distended by the Animal Spirits , and which at the time of Copulation , like so many Fingers , clasp themselves about the Ovarium ; and thus the Egg is conveighed through the whole length of the Fallopian Tubes to the bottom of the Womb , where it is further hatched into a Living Birth . XIII . The Point illustrated from a similitude betwixt the Vegetation of Plants and Animals . The Learned Mr. RAY illustrates this matter in his History of Plants from the Analogy and similitude there is between the Vegetation and encrease of the Seeds of Plants in the Earth , and of Viviparous Animals in the Womb. For even as , saith he , the ripe Seed of a Plant falls down to the Earth , and being there free and at liberty , doth first of all attract the Aliment through the pores of its coverings , and afterwards shoots down roots into the Earth ; so likewise the Egg of a Viviparous Animal , being by the Masculine Seed made Fruitful , and brought to Maturity , falls down from the Ovarium as from its Tree , into the Womb , as the Earth , where continuing for some time loose and at liberty , without being fastned to the VVomb , it takes in its first Aliment through the involving Membrans or Secundines . These Ovaria are nothing else but the Female Testicles formerly so called , which he that diligently views will find them to be nothing else but a Cluster of little Eggs. XIV . Many difficulties may be solved from this Hypothesis . Admitting this opinion , we may easily resolve the following Difficulties , according to SWAMMERDAM in his Miracle of Nature , or the Structure of a Womans Womb. First , Why a Parent that wants Arms or Legs may notwithstanding propagate a Birth , perfect and compleat in all its parts ; even because all the Parts of it are contained in the Egg. Secondly , So likewise that old and famous Question , whether the flowing of the Seed from all the parts of the Body be required to the perfection of the Birth , is readily answered . Thirdly , Hence it appears how Levi , long before his Birth , was said to pay Tenths , in , or with his Great Grand-father Abraham to Melchizedeck , to wit , because he was in the Loins of his Parents , as all the parts of an Animal are in the Egg. And Fourthly , Hence also may be explained and illustrated the ground and foundation of Original Corruption , because all Men that ever were , or shall be , were hid in the Loins of Adam and Eve , to whom therefore it may be easily conceiv'd , that that primordial Taint must have been necessarily propagated from these their First Parents . XV. At what time the Soul is infused into the Body . Now as to the time of the Animation of the Birth , Authors are likewise at great variance . ARISTOTLE supposeth that a Male Body receives its Soul the 42 d day after Conception , and a Female on the 19 th . Whereas AENEAS GAZAEUS will have the Soul not to be put into the Body already formed , but into the Seed it self , whilst it is yet without Form. THOMAS FIENUS , in his Book de Format . Foetus , determins the Infusion of the Soul to be the third day . But if it be lawful to guess at a thing so obscure as this is , it seems most probable that the Soul is then joined to the Body , when it is furnisht with all its Organs , that is , after the formation of the Belly , Heart , Brain , the Pineal Kernel , and all the other Parts , which Anatomists tell us happens about the Fourth Month. CHAP. V. How the Body of Man is nourished and encreased . I. What Nourishment and Encrease is . FOrasmuch as those parts that are so turned into our Substances , as to preserve our Body in the ●ame state and condition only , are said to nourish us ; and that those parts , which being transmuted into our Bodies , do make it greater in Bulk than it was before , are said to encrease it , and make it grow , we may easily apprehend what Nourishment and Growth is . II. The Progress of our Food from our Mouth to the Stomach , Guts , &c. The manner how both these are performed will more plainly appear , by taking an exact view of the changes of those Aliments , whence the Principles of our Blood are derived . First , It is evident that , besides the Culinary Preparation of the Aliment , it is chewed by the Teeth , and being mingled with the Spittle is sent down into the Stomach . 2 ly . That in the Stomach it undergoes a special Fermentation , whereby it is yet further dissolved . 3 ly . That from this dissolved and digested Mass , by another peculiar effervescence or working in the Guts , are separated the more useful and pure parts of the Chyle , from those that are more thick and gross , which are yet farther dissolved and attenuated in the Lacteal Veins , and the Kernels of the Mesentery , as also by the Commixture of the Lymphatick Juice ; and at last being mingled with the Blood in the Veins , are carried to the Heart ; where having past another effervescence , they become united with the rest of the Blood , there being now no more any difference between them . III. How the Chyle is driven out of the Stomach into the Guts . When , I say , that the Chyle is driven out of the Stomach into the Guts , I do not thereby own any Expelling Faculty residing in the Stomach , as the Antients did suppose , this being done by the Animal Spirits flowing through the Nerves into the Membrans of the Stomach , and drawing them together . And forasmuch as these Membrans of the Stomach do immediately infold and embrace the Chyle , in a healthful state of the Body , the said Liquor must of necessity be expelled through the Lower Orifice of the Stomach , into the Guts , as is manifest from a Bladder filled with water , the neck of it being left open ; for as soon as you press this Bladder with your Hands , the water gusheth out immediately at the Neck . Moreover , the pressure of the neighbouring parts , as of the Liver , Spleen , Guts , Midriff , the Pancreas , or Sweet-bread , and especially of the three last , contribute much to this Expulsion : for the Midriff is driven downwards by constant Inspiration , and pusheth upon the Stomach that lies under it , as may be seen in the cutting up of Living Beasts . IV. The nourishing of the Body is performed by the help of the Blood And forasmuch as it is observed that a Body cannot be nourished , as long as the Blood continually flows from it , but that on the contrary it wastes and consumes ; we may well conclude , that Blood concurs to the Nourishment of the Body , and that it is a substance , which acquires another nature , so as to supply those parts that are dissipated , and turn to Excrement . V. The opinion of the Antiens concerning Nutrition and Crowth . Which Change the Antient Physicians explained , by saying , that when the Blood was come to the utmost parts of the Branches of the Capillary Veins , it sweat through them in the form of a Dew , which afterwards turned into substance not unlike to Glew , of a mean consistence ; which Glewy substance was then attracted by the several parts of the Body , according to their several needs . So as that the Flesh attracted those particles that were most proper to be changed into Flesh ; the Bones , the most fit to be turned to Bones ; and that the same Attraction and Assimilation was performed by the help of 2 Faculties , the one whereof they called the Attractive , and the other the Assimilative Faculty . VI. This opinion rejected . But forasmuch as there is no such Attraction in our Bodies , and that our parts are not endued with any knowledge whereby they might be able to distinguish such particles of the Blood as are like and fit for them , from those that are otherwise ; this opinion seems to be very contrary to Reason . Neither do they make out , how the Venal and Arterial Blood comes to be changed into Dew , and thence into a Glew ; neither can they demonstrate what those wonder-working Attractive and Assimilative Faculties are , they do so much talk of . VII . How Nutrition and Growth are performed . We say therefore , that the Nutrition of Mans Body is thus performed . The Blood being come forth from the Heart , wherein it hath received its utmost perfection , is driven towards the ends of the Arteries . For as soon as the Arteries become dilated , and as it were blown up , the small particles of the Blood they contain , run against the roots of some Filaments , which proceeding from the Extremities of the Branches of the Arteries , do constitute the Bones , Flesh , Skins , Nerves , Brain and the other solid Members , according as they are in themselves of a several Juncture or Texture , and thus have the force to drive them a little forwards , and to take up their places . And then as soon as the said Arteries fall again , they leave the particles of Blood in the several places wherein they are , which abiding there , are by this means united to the part they touch . Now supposing this to be the Body of an Infant or a Youth , the matter whereof is very soft , and its Pores readily dilatable , if the particles of Blood , which are pusht out of the Arteries for the restoring of the solid Parts , be somewhat greater than those , into whose room they come , or if it happen that 2 or 3 particles crowd into one place , the Body by this means must needs grow and encrease . VIII . How the Parts of the Aliment become changed into Parts of our Body . But this apposition of Parts chiefly proceeds from the diversity of Figures , that is , as well in the several Particles of Blood , as in the Pores of the parts of the Body : for by this means it is , that when the Blood is driven into the Parts , some of the said particles are more fit to stop in these Pores , and others again in others ; where being variously complicated and figured , they become immediately united with the substance of the Parts , and wholly changed into their nature : whereas those particles , which because of their peculiar configuration , are not sit to adhere or cleave to these or the other Pores , are driven further to others ; till at last the residue of the Blood , whose particles were not adapted to enter any of the Pores , are remanded through the Veins to the Heart ; there to be further digested , and to acquire a new Aptitude for their union with the several parts of the Body . IX . Blood , as Blood , doth not nourish . Yet we must not imagine that Blood , as it is Blood , doth nourish ; for the red particles of Blood do not nourish our Body , but only the Chylous parts that are in it : for if the Blood , as such , did nourish our Bodies , then it must certainly perform this function to the Heart it self , and the Lungs which are so near to it ; for the Coronary Artery of the Heart , as soon as it is got out from it , doth presently , by a retrograde motion , return to it again . Thus also in the Lungs , the Blood takes but a very short course . So that it cannot be otherwise , but that these 2 parts , must have the Blood dashing against them with more force , than it doth against any of the other parts of the Body : If therefore in any part nutrition were performed by the Blood dropping out of the Vessels , the same must surely happen here , seeing that the Blood hath more force to enter upon them , by opening the small Orifices of the Vessels . But we do not see it does so in either of these parts ; for we find the substance of the Heart and Lungs in a natural and sound state , not moistned with extravasated Blood , but with a certain clear moisture . Nay what is more , it is evident that the Blood never comes out of its Vessels , without causing some Disease or other ; for if this happens in the Lungs , it causeth the spitting of Blood , and if in other parts , Swellings and other Diseases . X. The Chyle passeth through the Lacteal Veins , to the Snbclavial . The Physicians of old were of opinion that the Chyle , being by the Branches of the Vena Porta suckt out of the Stomach and Guts , were by them carried to the Liver . But our Modern Anatomists demonstrate that the Chyle is driven through the Lacteal Veins only to the Subclavial , and more particularly GASPER ASELLIUS , in the dissection he made of a Dog , whom before he had ordered to be well fed , in the year 1622. which discovery hath been further improved by others , who have found that the Lacteal Veins , filled with a Milky Juice , are Vessels different from the Mesaraick Veins : forasmuch as in Living Animals they appear distinct from the Mesaraicks which are Red , if the dissection be administred 4 hours after the Animal hath been fed , that is , at the time when the distribution of the Chyle is made ; for after that time they disappear again . But however tho' these be empty , they always appear like so many Strings or Fibres , and are never found fill'd with Blood. XI . The smalness of the Lacteal Veins , conduceth much to the forming of the Blood. Neither doth the smallness of the Lacteal Veins in the least embarras this opinion , for this was designed so on purpose by the Provident Care of Nature , to prevent the more gross and earthly parts of the Chyle from entring into them , as also that the Chyle through them might be , by degrees and leisurely distributed according to the necessity or requirings of the Body , and the more easily changed into Blood in the Heart , by that new disposition of parts it acquires by passing through it , and the Effervescence it undergoes there . For as the whiteness of Snow , and the colours of other Bodies , proceed only from the contexture and Position of the Parts : So the Blood derives its Redness only from that position of parts , which it obtains by its frequent passing through the Heart . XII . Why the Lacteal Veins are supposed to be of use for the Nourishing of the Body . The Reasons that induce us to admit the use of the Lacteal Veins are ; First , Because the Chyle , which is of a White Colour , cannot by the Mesaraical Veins be conveighed to the common Ocean , because they are manifestly filled with the Blood ; whereas the Lacteal Veins are white , that is , of the colour of the Chyle that passes through them . 2 ly . The Lacteal Veins do never appear till after the Body hath been fed , and only about the time when the food begins to be distributed ; which is a strong argument to perswade us , that the Chyle passeth through them . 3 ly . The quantity of the milky liquor that is in these Veins , may be encreased , by pressing the Guts , whilst they are as yet full of Chyle . XIII . The passage of the Chyle from the Guts . The Chyle therefore being duly prepared , passeth through the Guts , where the Alimentary Parts are separated from the unprofitable and excremental , and thence run into the Lacteal or Milky Veins , which carry the said Liquor into the Common Receptacle : From whence 2 other Vessels convey it through the Thorax or Chest , near the Back-bone , up to the Subclavial branches of the Vena Cava , and there empty themselves . XIV . The Birth is not wholly nourished in the Womb by the Mouth . Another Point to be examin'd is , how the Birth is nourished in the Mothers Womb ; since it cannot take in its Food wholly by the Mouth , but at first rather by Apposition , and afterwards by the Navel . For the situation and disposition of its Parts will not admit of this , seeing that the whole Body lies crouded together , and hath its Mouth shut up between its Knees . And tho' as soon as it is born , it reacheth to the Mothers or Nurses Breast ; yet is this only the effect of Natures Providence , which as it teacheth the Birth to fetch its breath ; so likewise she directs it , where to meet with Food . XV. But by the Umbilical Vessels . But that the Birth receives its Nourishment by the Navel , may be proved from the Courses of Women , which generally cease in those that are with Child , because the Blood is then defrauded of the Chyle and its Nutricious Juice , which at that time is kept in the Womb for the Nourishment of the Birth . And for the same Reason , as soon as the Birth is born , the Breasts are fill'd with Milk ; because the Juice which before was employed to feed the Birth , mounts up to the Breasts , where it is changed into a white Liquor . And this is further confirmed by those Women who do not Suckle their Children , for these perceive the Milk to return from the Breast to their Womb , where it is evacuated . To which may be added , that if the Birth in the Womb were nourished by the Mouth , it seems that it should also breath ; which it is impossible it should do , as long as it is in the Womb. Yea further , should the Infant open his Mouth in the Womb , it would be in danger of being choaked with the Liquor wherein it swims . So that it is very probable , that the Birth , when it is perfected , is only , at least chiefly nourished by the Umbilical Vessels . XVI . Flesh is not the Natural Food of Man. Now forasmuch as Man feeds on Flesh , Fish , Herbs and Fruits , it may be enquir'd which of these is his most Natural Food . Indeed if we examine the matter strictly , the feeding on Flesh doth not seem Natural to him ; yea , if we consider the Instruments he makes use of in Eating , we shall find it contrary to the intent of Nature . For we find that those Animals that feed upon Flesh , as Wolves , Lions , and the like , have their Fore-Teeth long , sharp , and at some distance from each other ; because Flesh cannot well be prepared for the digestion in the Stomach , without such Instruments as may pierce deep into the Substance of it , and pluck it to pieces . Whereas those Animals that feed upon Herbs , as Sheep , Oxen , Horses , &c. have short Teeth , which are ranged close together ; whence it may be easily guess'd , that Man who is furnish'd with such like Teeth , was designed to feed chiefly on Herbs and Fruits . XVII . Children love Fruits more than Flesh . This is further confirmed by the Example of Children , who following the Instinct of Nature , do prefer Fruits before Flesh : For Nature not being as yet debauch'd in them , they manifest by their Choice , what Food she design'd for them . So that it is not to be question'd , but that if Children , as soon as they are weaned , should be kept from the eating of Flesh , they would the more strongly desire Fruits , and choose them before all other Food whatsoever . XVIII . The Eating of Flesh was unknown to the first Men. This Intent of Nature may further be illustrated from the Custom of the first Men that lived in the World , who fed only upon Fruits . And accordingly the Holy Scriptures assure us , that the eating of Flesh was not permitted till after the Flood . If it be Objected , that some men have been found in the World , that have fed upon flesh , as the Savages of Brasile , &c. it may be easily answer'd , that these did not follow the guidance of Nature , but their own depraved Lusts and Affections , which prompted them not only to the eating of Flesh , but even to the devouring of Mans Flesh . XIX . Nature demonstrates the same , by denying us Instruments necessary for the Eating of Flesh . Moreover , had Nature intended Flesh to be our nourishment , she would without doubt have furnish'd us with Instruments fit for that purpose , nor have put us to the shift of making use of Knives , which other Carnivorous Animals do not stand in need of . Besides , why have we such an aversion to Raw flesh , and cannot endure to taste of it till it be prepared by Fire ; but only to shew , that Flesh is not our Natural food , being only introduc'd by Lust , which hath quite changed our Nature from its Primigenial Inclination and Temper . XX. Man would be every whit as strong , if he liv'd only on Herbs and Fruits . Neither let any Man object here , That Man would be much weaker , if he should confine himself to feed on Herbs and Fruits only ; for we see that Horses and Bulls are very strong and hardy Animals , which yet feed upon nothing but Herbs , and Corn or Pulse . How swift is a Stag , how lively vigorous and long Liv'd ; and this only by feeding on the Grass of the Field ? So that I should be easily induc'd to believe , that in case a Man were brought up like a Beast in the Fields , he would not be inferiour to Stags in running , nor to Apes in climbing of Trees ; which his delicate and tender Education do now make him unfit for . CHAP. VI. How the Motion of the Heart , Arteries and Muscles , are performed in the Body of Man. I. What the Heart , Arteries and Veins are . WE may gather from what hath been said , that the Heart is nothing else , but a Body , consisting of Musculous Fibres● , into whose Substance are inserted Arteries , Veins , Nerves , and Lymphatick Vessels . An Artery is a Vessel or Pipe proceeding from the Heart , fitted for the containing and conveying of Blood. A Vein is another sort of a long and round Vessel , hollow like a Pipe , with a single and lasting Coat , woven together of all sorts of Fibres . There are 2 Veins which proceed from the Heart , and in their coming out from it separate themselves , and are called by several Names : The Vena Cava , or Hollow Vein , proceeding from the Right Ventricle of the Heart , and from thence mounting strait to the Brain , is called the Jugular Vein , which under the Arm-pits divides it self into 2 branches , called the Axiliary Veins , or Subclavial ; and going downwards , it becomes also divided , and sends a large branch to the Liver ; and this is the Vena Porta , so called , which being divided into very small branches , loseth it self in the Liver . The other Vein being derived from the Left Ventricle of the Heart , is called Pulmonalis , or the Lung-Vein ; because it is distributed through the Lungs , the use of it being to convey the Blood back from the Lungs , by means of the Ear-lappet of the Heart , into the Heart again . II. All Motion in Man , doth not proceed from his Soul. We pereceive many motions in the Body of Man , which the ignorant Common People do attribute to the Soul ; for they seeing that a Dead Body , after the Souls departure , is deprived of all motion , conclude all motion to proceed from the Soul. But we shall easily be convinc'd of this Errour , by observing the Nature of Flame , which notwithstanding that it is Inanimate , is in continual motion ; even to that degree , as to exceed the agitation that is perceived in Animated Bodies . III. Heat is the Cause of all our Motions . But not to concern our selves about the Opinions of the Vulgar , we conclude Heat to be the Bodily Principle of all our motions ; seeing that Death is caused by nothing else , but the loss of our Native Heat , or the destruction of some Principal part of our Body . Wherefore when the Soul becomes separated from the Body , this doth not proceed from any defect of the Soul ; but because the Heat vanisheth , or because some of the Organs are destroy'd and spoil'd . For as long as we live , there is a Heat , or rather Fire in our Hearts ; but such a one as is without Light , ( and not much unlike to that whereby new Wine grows hot and ferments ) which we make the Principle of all the motions that are in the Body . IV. Of the Parts of the Heart . There be 2 Ventricles in the Heart FF , to which 4 Pipes or Channels do answer : To the Right Ventricle GG , the Vena Cava AB answers , into which all the other Veins empty themselves , as into their common Receptacle ; and the Arterial Vein D , which proceeding from the Heart , divides it self into divers branches in the Lungs . To the Left Ventricle HH , as many Channels do belong , viz. the Venal Artery E , which riseth from the Lungs , and the Great Artery called also Aorta C ; which being derived from the Heart , doth divide it self into many Rivulets , throughout the whole Body . V. The Blood runs throughout the whole Body . They who are acquainted with the Works of Dr. HARVEY , know that the Blood runs out of the Vena Cava AB , into the Right Ventricle of the Heart GG , and from thence is carried to the Lungs through the Arterial Vein D ; and afterwards returns from the Lungs into the Left Ventricle of the Heart HH , through the Venal Artery E ; and last of all , after these Circulations , is conveyed into the Great Artery C , which carries the Blood throughout the whole Body . These things being explained thus in few words : VI. The Cause of the Motion of the Heart , is the Bloods dilatation . I say , That the motion of the Heart proceeds from the Dilatation of the Blood that passeth through it ; Which effect of Dilatation is to be ascribed to the Fire which lies hid in the Heart , which rarefies the Blood as soon as it enters into the Ventricle of it ; by which rarefaction and expansion of the Blood , the Mouths of the Vessels are opened , and the Blood is conveyed thence ; upon which evacuation other Blood enters the Heart , to supply the place of that which is run out ; which rarefying in like manner causes the Heart to swell . And from this only proceeds the motion of the Heart and the Pulse or beating of the Arteries ; which is as often repeated , as any fresh Blood enters into the Ventricles of the Heart . VII . There is more Heat in the Heart , than in any other part of the Body . For we are to observe , that as long as an Animal lives , there is more heat in the Heart , than in any other part of the Body ; as also that the Nature of the Blood is such , as that upon the least over-heating , it becomes immediately dilated and rarefied , whence the motion of the Heart and the Pulse of the Arteries do proceed . VIII . How the Heart and Arteries are moved . For the better understanding whereof , we are to observe that the Pulse or Beating of the Arteries is chiefly promoted by 11 little Skins , which like so many little Floodgates or Doors , do open and shut the Orifices of the 4 Vessels that answer to the 2 Ventricles of the Heart . For at the same moment that one of these Pulses ceaseth , and another is at hand , these Valves in the Orifices of the two Arteries are exactly shut , and those that are in the Orifices of the 2 Veins are opened ; so that it cannot be otherwise , but that at the same time 2 parts of Blood must run out of these Veins , one into the one , and the other into the other Ventricle of the Heart . Whereupon these 2 portions of Blood , being both of them rarefied , and consequently taking up a greater Space , they shut the Valves that are in the Orifices of the 2 Veins , and so hinder any more Blood to fall down into the Heart ; and at the same time do push against and open the Valves of the two Arteries , and swiftly rush into them , by which means both the Heart , and all the Arteries of the whole Body are blown up . But this rarefied Blood becomes presently condens'd again , or penetrates into other parts of the Body . And by this means the Heart and Arteries fall flat again , the Valves in the entrance of the 2 Arteries are shut up , and those that are in the Orifices of the 2 Veins are opened , and give passage to 2 other portions of Blood , which cause the Heart and Arteries to be blown up again . IX . The Heart and the Arteries beat at one and the same time . Having thus discover'd the Cause of the Pulse , it may be easily conceiv'd that the Heart and Arteries must beat both together ; for tho' Blood be a fluid Body , yet forasmuch as it is contained in the Veins and Arteries , it is to be consider'd as a Continuous Body . For as when one end of a Continuous Body , such as a Stick is , is moved , the other end is moved likewise , in the very same moment ; in like manner a fluid Body that is contain'd in a Pipe or Channel , if any part of it be moved , the whole must needs be moved also : Which the Boys in their play do evidence , who whilst they push forwards the Water that is at one end of the Spout , they make it gush out at the other . Moreover , all the Arteries that are in the Body are continued and joyn'd together , and do all of them rise from the Aorta ; so that upon the least determination of Motion that is imprest upon this beginning of the Arteries , all of them must be made partakers of the same . X. The Animal Spirits derive their Original from this Cause . From this Dilatation of the Blood in the Heart , the Animal Spirits take their Original . For seeing that the Blood is made of the Chyle , and that the Chyle is nothing else , but a company of the more subtil Particles of the Aliment that have been dissolved in the Stomach , separated by means of the Orifices of the Lacteal Veins , and from thence carried to the Heart : It cannot be question'd , but that the Chyle and Blood , by frequently passing through the Heart , must attain to that great degree of Subtilty , as to resemble the Particles of those Bodies , which the Chymists , after fermentation , and several digestions and cohobations , do distill into Spirit , and bring over the Helm . These Spirits move upwards towards the Brain , because the Great Artery G , by which the Blood is carried up out of the Heart , tends directly that way . But being in great quantity , and not all of them alike pure , the more Subtil of them only do enter the Brain . So that the Animal Spirits are the purest portion of the Blood , subtilized by the heat of the Heart , and of that extream Swiftness , as to resemble the volatile Particles of Flame . For the Spirits are in a continual agitation , and never cease from Motion . XI . What Parts a Muscle doth consist of . Now in order to our understanding of the manner how our Members are moved , we are to take notice , that the Nerves , which are the Conduits of the Spirits , do proceed from the Brain and the Pith of the Back-bone , and end in many strings or filaments , which penetrate into the fleshy part , and help to constitute a Muscle : For these 2 Parts , viz. Flesh and Nerves do chiefly constitute the Essence of a Muscle . Which appears from hence , that many Muscles are found in the Body , in which nothing else is to be seen , besides the Nerve and the Musculous flesh ; as the Muscles of the Eyes , Forehead , Temples , Bladder , &c. XII . What Muscles are , and how they come to be stretched , and swell . The Muscles therefore are parts of the Body , that are fastned to others more solid , consisting of a loose and porous Flesh , and of a Membran that surrounds them ; which , when the Nerves do reach , ( to make use of the words of GALEN , Lib. 1. de motu Musculorum , Cap. 1. ) they become variously cut and divided , till at last being altogether scattered into thin and skinny Fibres , they are woven through the whole body of the Muscle , &c. For the Nerves are no other than so many Channels , which convey the Spirit , and are endued with Pores and Valves , that open themselves towards the Cavity of the Muscles ; so as that when once the Spirit is let in , they do hinder it from returning back again . It is necessary therefore , that the Muscles being blown up by the Animal Spirits , should be dilated in breadth , and contracted in length , and thus move the part to which they are fastned by way of Traction or Drawing . XIII . The Difference of Muscles , as to their Situation and Figure . The Muscles which GALEN , calls the Instruments of Motion , are all of them alike ; but differing in quantity , situation , and figure . With respect to their Dimension some are Thick , as the 2 that are called Vast ones ; others Thin , as the slender Muscle that bends the Leg or Shin-bone . Some are Long , as the strait Muscle of the Abdomen , and the Abductor of the Leg ; others Short , as the Pyramidal Muscles at the bottom of the Abdomen . Some Broad , as the oblique and transverse Muscles of the Abdomen ; others Narrow , as the Muscles of the Fingers and Toes . As to their situation , some are on high , others below ; some on the Right-hand , others on the Left , &c. As to their figure , some resemble a Lizard , others a Thornback , others a Mouse : Some are three-corner'd , some four , some five ; others are Round , Pyramidal , and the like . XIV . The Parts whereof the Muscles do consist . There are 3 Parts commonly assigned to a Muscle , the Head , Belly and Tail : By the Head of the Muscle , Anatomists understands that end , towards which the Contraction tends . Most Muscles have but one Head , tho' there be some that have two , and others three . By the Name of the Tail , they understand that end of the Muscle which is inserted in the part that is to be moved . And by the Belly they denote the middle part of the Muscle , which appears more swell'd like unto Flesh . Some Muscles have but one Belly , others two ; as the Muscle which shuts the lower Jaw-bone , and that of the Bone Hyoides , which are therefore called Double-bellied Muscles , as those that have three Bellies are called Three-Bellied . XV. A description of the Half Nervous Muscle . This may happen several ways , the first whereof is , when the fleshy Fibres of 2 Muscles do directly meet one another , and by this means form one Tendon ; as it happens in the Muscle called Semi-nervosus , or Half-sinewy , which is represented by the Figure , in which the fibres of the 2 Muscles AB , and BC , meeting one another directly , do by this their meeting form one common Tendon EB . XVI . The description of a two-headed Muscle . The second manner is , when the Fibres of 2 or more Muscles , meeting each other obliquely , confound their Tendons , and of 2 make 1 ; as it happens in the Two-headed Muscle of the Arm , as also in the Deltoides , which are represented by the Figure , wherein the Fibres of the 2 Muscles AB , and DC , do meet obliquely , and confounding their 2 Tendons , make one of it , viz. the Tendon EF. XVII . The Muscle of the lower ▪ Jaw-bone . The third manner is , when the Fibres of two Muscles falling upon the two opposite sides of one common Tendon , continue parallel to each other ; as it happens in the Digastrick or Two-bellied Muscle , which moves the Lower Jaw-bone , and which is represented by the Figure , in which the Fibres of the Muscles DC , and BA , falling upon the two opposite sides of the Tendon FE , continue in a Parellel position to each other . XVIII . The Mathematical effect of a Muscle . There are some modern Philosophers , who endeavour to make out , that the effect of any Muscle is meerly Mathematical , and demonstrable from the Principles of that Science . For seeing that there is a threefold Dimension , viz. Length , Breadth , and Depth , and that the figure of a Muscle is terminated by these , it follows , that all Muscles , that lye upon the Bones , when they are contracted , do increase as much in breadth and depth , as they lose in length ; that is , attain to a greater prominence of their Bodily bulk ; whereas , when they are extended , they cover a greater part of the Body . Which they demonstrate thus : Let there be a Parallelogram ABCD , representing the Two-headed Muscle in its state of Extension , and the Square BEGF , equal to it , representing the said Muscle in its state of Contraction . They say , that the Contracted Muscle in the second Figure , is every whit as large as the Extended Muscle in the first Figure : And because the Square of the Muscle BEGF , is equal to the Parallelogram ABCD , therefore they infer , that the surface of the Muscle is the same in both of the Positions , and that the Part GD , changed into breadth , is proportion'd to the Line AD , which determines the Local motion . XIX Our Members are moved by the help of the Muscles . The motion therefore of our Members is owing to the Muscles , which is when some of them are Contracted , and others Extended ; for no part of the Body can be reduc'd to a less Extension , but that at the same time it must draw up to it that part to which it is joyned . Now that one Muscle is rather contracted than another , proceeds from the Communication of Spirits . For that Muscle is contracted that hath most Spirits , as there are fewer Spirits in that which continues extended , and for this Reason appears longer and thinner . XX. The Spirits that are contained in the Nerves , are assisting to the motion of the Muscles . When it is said , That the Spirits which proceed from the Brain , do assist the motion of the Muscles ; this is not so to be understood , as if they alone were sufficient to perform this , but that they determine the Spirits that are contained in all the Nerves of our Body , to tend to one part , more than towards another ; or because they open the Orifices , through which many other Spirits may flow to one part , and by blowing up the same contract it . XXI . The Motions that are excited in us without our advertence , do not proceed from the Soul. From whence we may gather , That our Soul doth not immediately move our Members , but only direct the Spirits that flow from the Heart , through the Brain into the Muscles , and determine them to such and such motions . For the Spirits are indifferent of themselves , and may with the same facility be applied to several Actions . Wherefore all motions that are performed in us , without the command of our Will ; as Walking , the Concoction of our Food , Singing , and other such like Actions , which are done without our advertence , are not performed by the Soul , but only proceed from the disposition of our Organs , and influence of the Spirits . So that all our Actions , our Thoughts only excepted , do agree with and resemble those that we see in Brutes , and have one and the same Principle . CHAP. VII . Of the Circulation of the Blood. I. How the Blood is carried throughout the whole Body . FRom what hath been now said , no small difficulty ariseth ; viz. if the Blood flow out of the Vena Cava into the Right Ventricle of the Heart , and from thence into the Arterial Vein , and out of it into the Venal Artery , and thencc into the Left Cavity of the Heart , until it rush out into the Great Artery ; whence then shall we suppose , that such great store of Blood can be furnish'd ? Or , how comes it to pass , that the rest of the Veins that empty themselves into the Vena Cava , are not exhausted ? Or , that the Arteries are not over distended , into which the Blood from the Heart runs ? II. The Veins and Arterits are like so many Rivulets in the Body . This Difficulty will disappear , if we consider that the Veins and Arteries are like so many Rivulets in our Body , in which the Blood runs along , beginning its motion , as hath been said , from the Right Ventricle of the Heart , and after various windings falling into the same again ; so as that its motion is nothing else , but a continual Circulation . For the Blood which is contained in the Arteries and Veins of the whole Body , by turns continually rushing forth from the Heart , is driven along through the Arteries into the Veins , and out of them again returns into the Vena Cava , the Branches whereof are dispersed throughout the whole Body . III. The Contraction of the Arteries , promotes the motion of the Blood. The Spontaneous Contraction of the Vessels , which are full of Blood , doth very much promote that vehement force , whereby the Blood from the motion of the Heart , is driven all along through the Arteries and Veins . For by means thereof , with the help of Subtil matter , which forceth the narrow Pores of the Fibres , the sides of the Vessels come nearer together , by which means the Liquor contained in them is still driven further , and runs with a greater Force , as coming from a larger Space which it hath near the Heart , into the narrower Arteries : According as we see it happens in a Hogs-Bladder , which being fill'd with the Breath that is blown into it , is no sooner removed from the Mouth , but the Spontaneous Contraction of the Sides of the Bladder do drive out the greatest part of the Air. IV. Reasons proving the Circulation of the Blood. This Circulation was first discover'd by Anatomists , from the communication there is between the Heart and the Lungs . For they found there was the same quantity of Blood in the Venal Artery , as in the Left Ventricle of the Heart , which they concluded could not be so , except that the Blood were strained through the Arteries into the Veins , not by the Anastomoses or Inoculations of the Arteries and Veins , but by means of the porous Substance of the solid Parts . They observed also , that in the Hearts of Fishes which want Lungs , they could not find a Left Ventricle , because there is no necessity in them to have the Blood transfused out of the Heart into the Lungs . But they clearly make out , that such a Circulation is necessary in Man , as well to preserve the Heat of his Body , as to the production of the several Humours thereof . For how could it be otherwise , but that the outward parts of the Body must be congealed with Cold , if New Blood did not continually come to them communicating the heat it brings along with it from the Heart ? For conceive we the heat that is in the Heart to be never so great , yet would it not be sufficient to warm the Members that are so remote from it , except fresh Blood did continually flow to them , to repair their lost heat . Yea , it could not be otherwise , but that the Blood which is cold of its own Nature , must needs stagnate and be coagulated in the Parts , in case it did not continually return to the Heart , there to recruit its heat , and borrow new Spirits . V. Nutrition cannot be performed , without the Circulation of the Blood. Moreover , how could our Bodies be nourished , if the Blood did not continually flow to all the Parts of it ? And except some Particles of the Blood passing through the ends of the Arteries became joyned to the Body , entring into the place of those which they justly out ? How otherwise could our Food be digested in our Stomachs , and turned into Chyle , if there were not a virtue in our Stomachs proceeding from the Heart through the Arteries , which did promote their dissolution ? Moreover , all these Particulars may be confirmed from what before hath been said , concerning the Production of the Spirits , which being the most Subtil parts of the Blood , mount from the Heart to the Brain through the Great Artery , and being afterwards diffus'd into the Muscles by the help of the Nerves , impart motion to the Body . Which Sallies of the Spirits could not be , if the Great Artery did not by a Right Line ascend from the Heart to the Brain . VI. The Common Practice of Chyrurgeons , is a confirmation of the Bloods Circulation . To this also may be added the Practice of Chirurgeons , who when they go about to let any one Blood , make a Ligature about the Arm , above the Orifices of the Vein , towards the Shoulder , that the Blood may gush forth more freely ; because the Ligature hinders the passage of the Blood , and doth not suffer it to pass beyond the Ligature : For tho' it cannot hinder the Blood from continuing its course , yet it cannot hinder but that fresh Blood still comes out of the Artery to the Hand , and from the Hand to the opening of the Vein ; because the Arteries lye under the Veins , and by reason of the Hardness of their Coats , cannot be comprest without great Force . To which may be also added , that the Blood which proceeds from the Heart , through the Arteries , doth rush with greater force towards the Hand , than it returns from the Hand through the Veins to the Heart ; because the Blood flows more slowly in the Veins , than in the Arteries ; forasmuch as that which is in the Arteries hath but very lately been heated and rarefied in the Heart , whereas that which runs in the Veins , doth in time grow cold , and consequently moves more slowly . VII . As in the World there is a continual motion of the Water ; so in Man , of his Blood. In like manner therefore , as there is in the Greater World a continual Course of the Waters that return from the Sea through Subterranean Channels ; and of those that run towards the Sea , by the Rivers : So in the Little World , Man , there is a perpetual Circulation of the Blood through the Arteries and Veins . The Arteries carry the Blood from the Heart to the Members ; and the Veins return the same Blood again from the Members to the Heart : So that the Circulation of the Blood is nothing else , but the perpetual Motion of the same Liquor , passing from the Heart through the Arteries , and returning through the Veins to the Heart . VIII . Why the Blood that is in the Veins , it unlike to that which is in the Arteries . You will Object , That if the Blood be circulated throughout the whole Body 100 or 200 times ( as some suppose ) through all the Arteries and Veins to the Heart , there seems to be no reason why the Blood that is in the Veins , should be unlike to that which is in the Arteries ; whereas we find it is so . For the Arterial Blood appears more lively and florid ; whereas that of the Veins is more dull , and of a blackish Colour , which difference would not be , if the same Blood did run through the Arteries and Veins . IX . Answer . I Answer , That this difference of the Blood is , because that Blood , which is contained in the Arteries , hath before passed through the Heart , and keeps the same Qualities which it hath got there . Whereas the Blood that is contained in the Veins , is not so pure , as containing besides the Blood , which flows to them from the Arteries , another Liquor , communicated to them from the Guts . To which we may add , that the Blood is not so hot in the Veins , as in the Arteries ; because the Veins are at a greater distance from the Heart , than the Arteries , which only is sufficient to make it very different from that which is in the Veins ; because nothing is so easily changed , as the Blood is : As is evident in that as soon as it is got out of the Veins , the Air immediately corrupts it , so that it degenerates into another Substance . X. Whether Agues do depend on the Motion of the Blood. It may be you 'l Object in the Second place , that Agues only return at certain days ; whereas supposing the continual Circulation of the Blood , they would recur more frequently , viz. as often as the Blood returns to the Heart . XI . Answer . To which may be Answer'd , That the Matter of Agues is not lodged in the Veins , according to the Opinion of some Physicians , but in some Cavities of the Body ; where it continues till it comes to maturity , and be made fit to be mingled with the Blood. And according as it doth sooner or later arrive to this Maturity , it causeth either a Quotidian , Tertian , or Quartan Ague : And irregular Agues happen , when the said Matter , shut up in these Cavities , doth too much distend it self , and by its dilatation opens the Pores , so that by this means it wholly or in great part evaporates : For the Pores being once open'd , it is a hard matter to shut them again , before that much Matter is got out by them . XII . How long the Circulation of the Blood lasts in the Body of Man. But some or other , it may be , will enquire , how long this Circulation lasts ? I Answer , That this may in some sort be guest at from the Quantity of the Blood , which at every Pulse of the Heart flows into the Great Artery ; and by determining the Quantity of Blood contained in the whole Body . For if we suppose that at every Pulse of the Heart , one Dram of Blood enters into the Aorta , out of the Left Ventricle , and do then take an exact account of the number of Pulses , we shall easily infer , that if these Pulses be 64 times repeated in one Minute ( as it hath been observed in a Man of a middle Age and Temperament ) there will be 3840 of them in one Hours time . Whence it follows , that every Day 32160 Drams of Blood pass through the Ventricles of the Heart in one Day , which added together make 700 Pounds of Blood. But since there is not so much Blood in the Body of Man , nor scarcely above 10 Pounds , we must conclude that the whole Mass of Blood circulates through the Heart 72 times every Day , and that consequently it passeth out of the Heart into the Arteries , and from the Arteries to all the Parts of the Body thrice in one Hours time . XIII . How the Blood Circulates in the Birth , whilst it is yet shut up in the Womb. It remains now , that we explain how that the Circulation of the Blood through the Heart is performed in the Birth , whilst it is shut up in the Womb : For seeing that the Infant doth not breath in the Womb , as shall be said in the next Chapter , its Lungs lye still without motion , and consequently admit no Blood at all . There are therefore 2 branches found in the Birth , by means whereof this Defect is made up : The former whereof springeth from the Vena Cava , 2 or 3 Fingers breadth above the Midriff , and is inserted into the Vein of the Lungs near the Left Ventricle of the Heart , which the Blood presently enters , and after its Fermentation , or Effervescence there , is through the Aorta distributed throughout the whole Body ; but the remaining portion thereof ascends farther through the Vena Cava , and enters the Right Ventricle of the Heart ; from whence , after Fermentation , it proceeds into the Artery of the Lungs , out of which , near to its egress out of the Heart , another small Channel ariseth , which runs strait to the Great Artery , and into it pours forth the Blood that comes from the Right Ventricle of the Heart , to the end it may be distributed throughout the whole Body . So that because the Blood cannot pass through the Lungs , therefore that which enters the Left Ventricle of the Heart , passeth into the Right ; and thus by these Channels , the want of the passage through the Lungs , is made up . But after that the Child is born , these 2 Channels are stopt up , as being of no further use ; the Circulation of the Blood being now performed through the midst of the Lungs . CHAP. VIII . Concerning Respiration . I. What Respiration is , and that it is necessary for the maintenance of Life . FOrasmuch as the Life of Man consists in the continual Motion of the Blood , and an Animal is said to live as long as the Alimentary Juice runs through the Heart , and from thence is driven to the other Parts ; it is apparent that Respiration is necessary for the maintaining thereof , without which neither the Beating of the Heart , nor the flowing of the Blood can be performed . Hence it is that we commonly use the word Expiring for Dying ; and that ARISTOTLE declares , that the Life of Man consists in the drawing and breathing out of the Spirit . For seeing that the Heart is heated by continual motion , Respiration is necessary for the Ventilating thereof , and for the Cooling of the Blood , to prevent it from being over-heated or enflam'd . Respiration therefore is the Alternative Expansion and Contraction of the Thorax or Chest , by which the Air is conveyed through the Wind-pipe to the Lungs , as well to cool the Blood contained in the Veins thereof , as afterwards to expel the said Air , together with the smutty Vapours : The Chest , Midriff , and Abdomen , as so many Muscles assisting to this Motion . II. Respiration is either Voluntary or Spontaneous . Respiration is twofold , Voluntary or Spontaneous : Voluntary is that whereby the Soul , by its Cogitation and Will , determining the motion of the Animal Spirits into the Muscles , which serve for Respiration and Expiration , doth by turns enlarge and contract the Breast . Spontaneous Respiration is that which is performed by us when we are asleep , or think of something else , from the conformation of the Nerves , which assist Respiration ; whereby the Animal Spirits , without any determination of our Thoughts , flow into the Muscles , design'd for Inspiration and Expiration . III. There be two parts of Respiration . There be 2 Parts that constitute Respiration , viz. Inspiration and Expiration . Inspiration is that Action , whereby the Chest becomes dilated upon the entrance of the Air : Expiration is that Action , whereby the Thorax , or Chest , becomes comprest upon the Expulsion of the Air , together with the Vapours . So that the Breast derives its Dilatation and Contraction from this twofold Motion ; its Dilatation , when its Parts are extended beyond its Natural amplitude ; and its Contraction , when of themselves they return to their former Natural situation . IV. The Air doth not not enter the Breast to avoid a Vacuum . When the Air enters the Breast in Respiration , this Motion doth not proceed from the fear of admitting a Vacuum , neither must we imagine , that the Air of it self runs thither without being driven ; but forasmuch as by the Dilatation of the Breast , the Air which is about the Breast and the Abdomen , is easily thrust out of its place , because of its Fluidity ; neither is there any other place to receive that Air , but that which is made for it by the Dilatation of the Breast ; by this means it comes to pass that the Air which is driven away by the Breast , doth push forwards that which is about the Mouth and Nostrils , and drives it down the Wind-pipe into the Lungs . And thus as much Air is driven into the Lungs , as the Breast and Abdomen by their Dilatation do thrust away from them ; so that here must be conceived a whole Circle of moved Bodies , according to that Axiom of Natural Philosophy , that Every Motion is performed Circularly . Now that the Air enters into the Lungs , because it is driven away by the Breast , is manifest in a Dead Body , where tho' the Mouth and Nostrils be open ; yet the breath doth not enter into the Hollow of the Breast , because there is no Cause by which the Air might be driven thither . And the same we our selves experience , when after having breath'd out the Air , we keep our Chest for some Moments contracted : For in this state we are very sensible that the Air doth not in the least press upon us to enter into our Lungs , as long as we keep our Breasts in that posture . V. Respiration is performed by the help of the Muscles of the Chest , and the Abdomen . Respiration therefore is performed by the Action of the Muscles of the Chest and the Abdomen , which by extending and contracting of our Body , determine the Air to its Ingress and Egress . For there be 2 Muscles H and L , which by turns are blown up by the Animal Spirits , and fall again , and which by their Ingress and Egress do continually maintain the Dilatation and Contraction of the Lungs : For they are so disposed , as that when the one of them , viz. H is blown up or swells , the Space wherein the Lungs are contained , becomes dilated , whereupon the Air enters into them through the Mouth and Nostrils ; and whilst the other L swells , the said Space is comprest , and then the Air is thrust out by the same ways : In like manner as the Air enters into a pair of Bellows , when the sides thereof are distended , and upon their being closed , is driven out again . VI. The manner how Spontaneous Respiration is excited at first . The Animal Spirits therefore being conveyed out of the Ventricles of the Brain , through the interposited Pith of the Back-bone into 2 Nerves , through the Valves CD , are sent in more abundance , and with greater force into the Nerve CGA , which serves for Inspiration ; forasmuch as the same is supposed to be more large and open . And thus the Valve or Flap G , being in the midst of both Nerves is shut , and hinders the Animal Spirits from removing out of the Muscle H , into another passage K ; and at the same time the other Valve F , of the opposite Nerve DFB , is opened , by which the Spirits pass out of the Muscle L , into the Muscle H ; which together with those which flow from the Brain into the Nerve CGA , do enlarge the Body , and drive the neighbouring Air into the Lungs . VII . The Reason of Spontaneous Expiration . And thus is Respiration performed , and lasts as long as the Muscle H , being swell'd by the affluence of Animal Spirits , doth hinder the Ingress of other Spirits , and being straitned by the Membran 1 , 2 , 3 , wherewith it is covered , as well as by its Spontaneous Contraction , is comprest to that degree , that the Animal Spirits rushing forth , by reason of their too great quantity , out of that Muscle , do open the Valve G , and passing through it into the Muscle , they together with other Spirits flowing from the Brain dilate it , and streightning the Breast expel the Air out of it . And after this manner it is , that Spontaneous Respiration and Expiration is performed in us , either when we are asleep or awake . VIII . The Midriff is the Primary Cause of the Motion of Respiration . But forasmuch as the Lungs have neither Fibres nor Muscles , without which no part of the Body is moved , we are to enquire what that is which effects this Rising and Falling of the Lungs . For as a pair of Bellows is distended or comprest with the Hand ; so a like Cause must be assigned , which dilates and compresseth the Lungs : This upon Enquiry we shall find to be the Midriff . For it is a thing whereof every one is aware , when he feels that motion whereby his whole Abdomen is lifted up at every Inspiration , that at an equal Interval of time , the Gristles of his Ribs are drawn inwards ; because the Midriff , by its middle part , presseth the Stomach and Guts downwards , and at the same time doth attract or draw inward , the Gristles to which its Extream parts are fastned , by reason of the tension or stretching of its Middle part . Moreover we find , that when we have fed plentifully , our Respiration is more swift , but withal not so strong and vigorous : And the same thing we Experience , when the Air we take in is thick and fill'd with gross Vapours . Forasmuch as in the former case , the Midriff , because of the over-fulness of the Stomach , cannot dilate it self , as it was wont to do , and therefore endeavours to compensate the diminution of this Dilatation , by the frequency of her Respirations . And in the latter case , the Lungs are so clog'd with the gross Air they have drawn in , that not being able to cast it out again , they are forc'd to continue distended ; and so it happens that the Midriff , not being able to return to its first State , is put upon a more frequent Reciprocation of its Motion . IX . Wounds in the Chest prove the great influence the Midriff hath on Respiration . This may be further confirm'd from Wounds of the Chest : For as soon as that is pierced , immediately the Lungs fall flat , the Midriff still continuing its motion upwards and downwards , and attracting the Gristles , and moving them , as it did before the said Wound was inflicted : So that we cannot say , that the Lungs do perform the Function of Respiration , but that they are only as Concomitants , inasmuch as complying with , or following the motion of the Midriff , they take in the Air , and presently after being contracted , expel the same , together with the smutty Vapours that arise from the Blood. Yea , it hath often been observ'd , that some Men who have had their Lungs in a manner wholly consumed ; yet have never been troubled with any considerable difficulty of Breathing ; which could never have been , in case the Lungs were the principal and primary Instrument of Respiration . X. Of the manifold use of Respiration . Many are the Uses of Respiration : First , For the Cooling of the Blood ; for except the Blood that flows from the Right Ventricle of the Heart , through the Arterial Vein , be refrigerated by the Air taken in by Respiration , and be condensed again , before it enters the Left Ventricle of the Heart , it cannot be fit Fewel to that Fire which lies hid in the Heart , nor maintain it . The Second use is , That the Air which goes out from the Heart , carries along with it some Particles , which are as it were the Smoak and Soot of the Blood , and conveys the same through the Arterial Vein , from the Right Ventricle of the Heart . For the Lungs are as it were a Sieve , by the help whereof the Filth is separated , and those Humours sent away which would choak the Heart , should they continue mingled with the Blood. Respiration therefore clears and purifies the Blood , that it may be fit to enter the Left Ventricle of the Heart , and without hindrance be transmitted to the Aorta . Wherefore Respiration is of absolute Necessity to the Life of Man , so that when that is stopt or hindred he must dye . And therefore HIPPOCRATES saith : We may live for some days without Meat or Drink ; but when once the passages of our Breath are stopt , we cannot continue one Hour . Moreover , when all other Actions admit Intervals of Rest , Respiration alone is that Action which in Animals never ceaseth . For seeing that the Animal Life chiefly consists in the motion of the Blood , or at least necessarily depends on the same it is evident that upon the ceasing of Respiration , the Blood cannot pass from the Right to the Left Ventricle of the Heart ; whereupon the motion of the Blood , which is of such absolute necessity to the maintaining of Life , must cease likewise . XI . How Infants Breath in thei● Mothers Womb. If you Object here , That Infants live in their Mothers Womb without Respiration : I Answer , That Nature hath taken another way to secure the Life of the Infant in his Mothers Womb , by taking care that the Blood which hath been heated and rarefied in the Heart , should not any more return thither again , but in a very small quantity . For since the passage of the Lungs , because of their compact consistence , is intercepted or shut up , the Blood is conveyed another way , out of the Right Ventricle of the Heart into the Left , viz. through the Body of the Vena Cava , out of which there is a passage opened into the Venal Artery , which is commonly call'd the Oval Hole ; and another out of the Arterial Vein , into the Great Artery ; through which Passages the Blood is forced to take its course . But as soon as the Infant is born , the Blood enters through the Artery and Vein of the Lungs , either because these Vessels of the Lungs are wider than those other Passages , and afford it a more free Ingress ; or because the Passage of the Oval Hole , and the Arterial Channel , begin to be obstructed by degrees , and turn to a Ligament . XII . Some Animals live in the Waters , without any Respiration . And for the same Cause it seems , that Ducks , Didappers , Geese , and other Aquatick Animals , do live for some time under Water , without Respiration ; because those Passages , I have but now mentioned , are not wholly stopt up in them , but either by their daily using of them , or by reason of the Natural disposition of the Parts in those Animals , do continue open , and cannot without some difficulty be obstructed or abolished . And we may with great probability attribute to the same Cause what Historians relate of some Divers , that would continue for Hours together under the Water , viz. that by a singular Priviledge of Nature , these two Passages continued open in them , so as that the Blood could pass through them , as it did before they were born . Yea , we have the Relation of some dissected Bodies , in which these have been found open , so as that the Blood could freely pass through them . CHAP. IX . Of the Growth and Decrease of the Body of Man ; of the Temperaments and the Differences of Age. I. How Augmentation or Growth differs from Nutrition . A Body is said to be nourished , when the Particles of Aliment being turned into Chyle , do preserve and maintain it in the same state wherein it is ; but it is said to grow , when these Particles are in such abundance joyned to it , as that thereby its bulk increaseth . Thus Mans Body is said to grow , when Particles of a new Substance are added to those which before made up its bulk , or magnitude , exceeding in quantity what it loseth by continual Transpiration . For seeing that all the Parts of our Body , the Bones only excepted , are soft , their Pores consequently are easily dilatable ; and therefore whensoever more prepared Aliment is joyned to them , than their Narrowness can contain , consequently that Body must increase in bulk . II. How Augmentation is performed in Mans Body . How this is done we shall easily understand , by following the Blood from its Fountain , the Heart , and observing the several turnings it takes in the Body . Conceive we therefore the Blood that hath been rarefied with the Heat , or Fire that is in the Heart , rushing forth thence through the Aorta towards the Brain , and some small portion of it entring the Capillary Arteries , and insinuating it self into all the infinite Pores of their Membrans , which are opened at every Pulse or beating of the Heart . Conceive we also these Pores , to be so exceeding narrow , that the Particles of Blood cannot range up and down in them , but are forced to pass strait forwards , so that touching one another , they do no longer compose a Liquid Body , but rather several slender Threads ; such as the Fibres or Strings of Flesh are . This supposed , we shall easily apprehend that a Body is then said to be Nourished , when the dissipation of one Fibre of the Fleshy parts , is made good by an equal portion of Matter ; and to grow or increase , when more Matter is joyned to it , than was dissipated . As we see that Bread swells to a greater bulk , when its Pores take in more Milk or Wine , than the quantity of Air was , which either of these Bodies have driven out of them . III. What Decrease or Diminution of the Body is . The Decrease or Diminution of the Body , is caused either upon the defect of Food , or when the Aliment is unfit to enter the Pores ; or when the Natural heat is too weak to drive the Food to the ends of the Fibres , and by this means restore the dissipated Substance of the Body ; as it happens in Old Men : Or when the Heat is too strong , as in those that are of a Cholerick Complexion : Or when the Texture of the Body is such , as that it cannot admit the Alimental Juice into its Pores . IV. The Body of Man grows till the Age of One and twenty . The Body of Man is observ'd to grow till the years of 21 or 22 ; for seeing that until that term , the Bones are not yet arrived to their utmost degree of Hardness , and that the other parts of the Body are readily penetrable , the Aliment accordingly is readily received into the Pores of them ; and though for many years after this , the Body may spread in breadth , yet at last it ceaseth from any further growth , because the Parts of the Body , by reason of a continual access of fresh Aliment grow so hard in process of time , that its Pores can no longer be extended or dilated , nor any thing further be added to it . V. The Four Temperaments or Complexions of a Human Body . The Body of Man being a compound of different parts , Physicians have attributed to it a Temperament consisting of several Humours , viz. Blood , Phlegm , Choler and Melancholy ; which are distinguisht by their native qualities . For the Blood in the Veins and Arteries is hot and moist ; Phlegm cold and moist ; Choler hot and dry ; and Melancholy dry and cold . So that a Man whose Temperament is hot and moist , is esteemed of a Sanguine Complexion ; he that is of a hot and dry , Cholorick ; and so of the rest . For all Men are not of the same Temperament , but differ according to the Predominance of one or more of these humours , and accordingly are inclin'd to various Passions and Inclinations . VI. The Disposition of those that are of a Sanguine Complexion . Persons of a Sanguine Temperament , have quick and lively Bodies , a Ruddy Colour in their Faces , they are little thoughtful or serious , but inclin'd to Jesting , Singing , Complaisance and all manner of Merriment ; and much addicted to Lust and Pleasure . They have a great , full and moderate Pulse ; which makes Youths that abound with Blood to be facetious , good natur'd , plump and of a Ruddy Complexion , and subject to Inflammations and other Diseases proceeding from a surplus of Blood. VII . The Temper o● such as are Cholerick . Cholerick Persons ; or such in whom the Gall abounds , are of a hot and hasty Temper , and like Straw or Stubble do easily take Fire , and are suddenly kindled with Anger and Indignation , but do not keep their Anger long , being soon reconciled . They are much subject to Tertian Agues , the Yellow Jaundise and Fluxes of the Belly , these Diseases proceeding from the Depravation of the Gall. VIII . The Melancholy Complexion . Those of a Melancholy Complexion are not so readily provoked to Anger ; but being once provoked , are not easily appeased . They have a small and slow Pulse , narrow Veins , and a sad and dark Aspect . The diseases they are most subject to are Schirrous Swellings , Quartan Agues , the Piles , Hypochondriacal Melancholy , and other Distempers of the Spleen . IX . The Phlegmatick Complexion . Phlegmatick Persons being of a cold and moist Temperature , are not troubled with any vehement Passions , neither are greatly moved about any outward things ; and therefore are Slow , Sleepy , Lazy , and not at all inclin'd to be Angry : They are subject to daily Phlegmatick Tumours , Winds and the Dropsie . X. All the parts of the Body have their Peculiar Temperament . The parts of the Body also have their particular Temperament ; for the Heart is the hottest of all other parts , as having in it a continual Fire , which is fed and maintained by the never ceasing Afflux of the Blood. The most moist part is the Brain , which the continual Defluxions proceeding from it , are a pregnant witness of , being caused by those Vapours , which continually ascending to the Brain , are there condensed . The Bones are the most cold and dryest parts of the Body , forasmuch as their particles are without all motion , and their Pores are only filled with Air or Subtil Matter . XI . Of the Different Ages of Man. The difference of the several Ages of Mans Life doth likewise depend on a variety of Temperament ; and are more in Man than in other Animals . By the name of Age we understand such a part of the Life of Man ▪ wherein by reason of the mixture of Heat and Cold in his Body and their acting upon each other , the Temperament of it undergoes a sensible alteration . These Ages are distinguisht into Childhood , or the Age of Stripling , the Age of Young Men , Manly Age , and Old Age. XII . Of the First Age , Childhood . The Age of Childhood in Boys reacheth to their 14 th year , and in Girls to their 12 th . The Bodies of Children are in a manner of an equal Temperature between Heat and Moisture ; for tho' the Heat and moisture of their Bodies exceeds that of Men , yet they are said to be temperate , as being such as best agree with their state . BOYS and GIRLS begin to breed Teetth when they are a year and an half old ; and when they are about 7 , change their first Teeth for new ones . XIII . The Second Age , Youth . The next Age is Youth , which extends to the 25 th year . This Age is more Temperate than Childhood , as wherein the Heat doth not so much prey upon and dissipate the moisture , and the moisture less clogs the Heat . Youths are most desirous of Liberty , and accordingly as soon as they are got from under the Inspection of their Parents and Masters , they are apt to run into great Excess , by betaking themselves to their Lusts and Pleasures . As being persuaded that they are now wholly at their own dispose , and at full and absolute liberty to do whatsoever they please . XIV . The Third Age , that of Young Men. Next to Youth follows that which is called the Age of Young Men , which reacheth from 25 to 35 , and is the flourishing Age of Man , wherein Heat and Driness do predominate ; the watry Humour being much wasted in the foregoing years , and the Oily Particles more intricately mixed together , do make the Heat stronger , and preserve the Animal Spirits better . Accordingly Young Men are more hot than Youths , and violently carried to Venery . As to the Temper of their minds they are Restless , Rash and precipitant in their Judgment , neglecting present good things , and reaching out to those that are Future . XV. The Fourth is Manly Age. Next follows Manly Age , which from 35 extends it self to 50. In this Age the Natural Heat , and Agitation of the Spirits begins to be lessened ; but yet the Body is not so exhausted , as that the natural Faculties grow faint and weak , seeing that every part is ready and fit to exert the Fanctions and Actions of Life . XVI . The Fifth and Last is Old Age. Last of all comes Old Age which is Dry and Cold ; the former part whereof called Viridis by the Learned , reacheth from the year 50 to 60 , during which , many Old Men are yet pretty lively and vigorous ; the Middle is from 60 to 70 , during which term the Spirits are few and weak , and can but languidly perform their functions . The Senses grow dull and weak , the strength and vigor of the Body languisheth . And the last is that which is called Decrepit Age , which compleating the Dryness and Coldness of the Body , brings in Death , the end and conclusion of them all . Book . 1. Part. 8. Chap. 10. G. Freman Inv. I Kip Scu To his Highness William Duke of Glocester &c. a. The Plate is most humbly Dedicated by Richard Blome . CHAP. X. Of the Senses in General . I. What the Senses are . THO' all things in the Body of Man be full of wonder , and most proper to raise our minds in Gratitude to Glorifie our Creator ; yet doth nothing more lowdly proclaim his Power and Goodness , than the variety of our Senses , which are those Affections or Cogitations by which we perceive External Bodies . For the Senses are nothing else but Perceptions of the Mind , that are the consequences of several Motions made in the Brain ; our nature being such , that by occasion of these motions , produced in our Organs , several Ideas and Figures of the things are represented to us . II. What an Organ is , and how manifold they are . An Organ is that part of the Body , which receives the impulse or action of the Object ; or is that Natural Instrument by means whereof an Animal perceives something . Some Organs are External , which have their Inlets in the outward part of the Body , as the Eyes , Nostrils , Ears and the Nerves that are joined to them : Others Internal , which lie hid in the inward parts of the Body , as the Brain , the Spirits , the Pineal Kernel . III. How the Senses perform their Functions in the Body . For seeing that our whole Skin and Flesh , whereof the outward Habit of our Bodies do consist , are interwoven with several Twigs and Tendrils of the Nerves , when these are distended by the Animal Spirits rushing into them , they are easily put into motion by the least justling of outward Bodies : which motions according as they are grateful or hurtful to the Bodies in which they are excited , do exhibit variety of sensations to the Soul. As for Example , because Tangible Objects touch our Bodies , they produce a motion in the Organ , by the Help of the Nerves , the Extremities whereof are extended throughout the whole Body , which motion being immediately carried to the Brain , and thence communicated to the Soul , which is intimately present to it , doth variously affect the same according to the diversity of the Nerves , and structure of the Organ . IV. There be three Degrees of Sensation . This will appear more clearly , by considering these three degrees in every sensation : the First when the Organ is affected by forrein Bodies ; or when the Impression is made by the object it self , which being received into the Organ of Sense , carries the Type or Character of the sensible thing along with it ; and this is nothing else but the Agitation of the Particles of that Organ , with some variety of Position and Figure proceeding from that Agitation . And this first degree is common to Men with Brute Beasts . The Second is the Perception of the Soul , heeding or attending to that motion , which immediately follows upon the former degree , because of the intimate presence of the Soul to the Organ so moved . The Third comprehends all those Judgments , which we form by occasion of these motions . Which Progress , if it be well heeded , it will be manifest , that all Bodily Objects are therefore only perceived by us , forasmuch as they move the Nerves that assist such and such Organs . V. The Three Degrees of Sensation illustrated by an Example . As for Example , when I see a Stone , or any other Object , it is because the Light reflected from the Stone moves my Eye : for nothing else proceeds from the Objects to our Senses but motion only , or an Impression . Which motion is readily conveighed from the Bottom of the Eye through the Optick Nerve , or its small Fibres to the Brain , and Seat of the Soul ; upon which impression immediately follows our perception of Light or Colour ; and then the Judgment whereby the Soul concludes the thing to be of such and such a Colour . VI. The Diversity or Variety of our Senses , proceeds from the Difference of our Nerves . For from the variety of the Motions that are made in the Organs , and conveighed to that part of the Brain , from whence the Nerves proceed , divers Senses are produced . Thus by the force of the motions that are made in that part of our Brain , whence the Optick Nerves do proceed , we are affected with the Sense of Light , and by the variety of those motions , with that of colour . Thus by the motion of the Nerves that belong to our Ears , we perceive Sounds ; and by those that are disperst through our Tongues , divers Tasts , Relishes and Savours . And the same may be said of the perceptions of Titillation , Pain , Hunger , Cold , &c. all of them depending on the motion of the Nerves . VII . All Motions are conveighed to the Brain . For seeing that the Ventricles of the Brain are perpetually filled and distended by the Animal Spirits , as we see that the Sails of Ships , are blown up and stretched by the wind : And since in the midst of the Brain we find that Kernel placed , which is called by Physicians , Conarion , or the Pine-Apple-like-kernel ( of which more hereafter ) being surrounded every way with the Animal Spirits , there is no agitation so small or inconsiderable that can happen to the small Fibres or Filaments of the Nerves , but that it must be communicated to the Brain , and consequently be imprest on the Animal Spirits contain'd in it ; and by means of them to the foresaid Kernel , and consequently to the Soul whose Residence it is . For so we are taught by Learned Men , that we never feel or are sensible indeed , except we feel , that is , perceive , that we feel . And thus ARISTOTLE himself tells us Problem 33 Sect. 11. that Sense , when it is separate from Understanding , is only insensible labour , whence it is said that the Mind sees , the Mind hears . VIII . Our Senses are no more than Motions . We may conclude therefore that our Soul doth not stand in need of any sensible Species proceeding from the Objects , to make it capable of Sense , the motions imprest upon the Body from without being sufficient for this purpose , as may be proved by manifold Experience : For when a Man is hit on the Eye , he perceives flashes of Light , tho' indeed he be in the Dark , and cannot discern any Objects . Whence it is evident , that this Sense is only to be ascribed to that violent agitation imprest upon the Organ of Sight . And something not unlike to this happens to those , who having for some time fixed their Eyes upon the Sun , upon turning their backs upon it , or shutting their Eyes , think they see a vast variety and mixture of Colours . The cause whereof is the concussion of the Strings or Fibres of the Optick Nerve . IX . The Error of the Peripateticks about the Cause of Sense . Whence we may be convinc'd of that palpable Error of the Peripateticks , who suppose the Sound that is received into the Ear , to be in the Air , or in the Sounding Body : And in like manner , that Light and Colour are in the Flame , and in a Wall or other Object ; because they do not feel a Sound , Light , and Colours in themselves , as they feel Pain and Tickling ; supporting their Opinion also with this Argument , That the Colours that are seen , appear to us much bigger than our selves . X. This common Errour refuted . But that these Arguments are of no force in this case will appear , if we consider , that we have a sense of many things which are without us , and which we judge to be much greater than we our selves are , tho' there be nothing without us that effects such Sensations in us . For Mad-men , and such as are in a high Fever , do sometimes see , or think they see many Appearances or Representations , which are not imprest upon their Eyes from without . In like manner it frequently happens when we are asleep , that we think we hear Sounds , or see Colours , after the same manner as we do when we are awake ; and then attribute that Sound , and those Colours , to External Objects , and imagine them to be much greater than they are ; when indeed there is nothing without us , to which we can attribute them . XI . There is no Necessity for our admitting of Intentional Species . Neither is there any thing that obligeth us to admit such Images as these , for the Explication of the Sense of Seeing , or any other ; since we find that there are many things that can produce Affections and Commotions in our Souls , which have no likeness at all with the Objects they signifie : As when Words spoken , or committed to Paper , represent the Slaughter of Men , Destruction of Cities , or Storms at Sea ; or excite the Affections of Love or Hatred : Which Representations or Thoughts bear no resemblance at all with the things they signifie . XII . Because they are not Intelligible . Besides these Species ( which are commonly called Intentional ) are so obscure , that the Nature of them cannot be understood : For they are not Corporeal or Divisible , seeing they are found whole and entire in every least part of the Subject or Medium . And if they be Indivisible , as most suppose them , and of an ambiguous Nature between Body and Spirit ; how come they to move our Senses , yea , and sometimes hurt them too ? Or how can they represent Extended Beings , being without Extension themselves ? XIII . Neither is the Cause of them intelligible . Neither is the Original or Cause of these Images less obscure , than they themselves are : For how can we suppose that sluggish Bodies can by Emanation send forth such excellent Forms ? Nothing being more wonderful or inexplicable , than how such Spiritual Forms should continually be procreated by Terrestrial Bodies , or flow from them . Besides , by what Chariots or Vehicles are they conveyed to us ? Do they come solitary to us from the Object ? Or are they diffused and multiplied by Propagation , and that in a Moment of Time ? XIV . The Senses are in the Soul. Wherefore tho' every one ( as DES CARTES saith , in the beginning of his Treatise of Light ) be apt to persuade himself , that the Idea's which we have in our Thoughts , are like the Objects from whence they proceed ; yet can I find no Reason , to assure my self thereof : But on the contrary do meet with many Experiments , that may make us to question it . For if Words that signifie nothing of themselves , but only from Custom and Human Institution , are sufficient to make us conceive many things , wherewith they bear no resemblance at all : Why may not Nature as well appoint a Sign , which may make us to have the Sense of Light ; tho' indeed , it contain nothing that is like that Sense ? Don't we find , that in this manner she hath appointed Laughter and Tears , whereby we may read Joy or Sorrow in the Faces of Men ? But you 'l say , That our Ears make us sensible of nothing but the Sound of Words , and that it is our Soul only which remembers what these Words signifie , that does represent the same signification unto us at the same time . To which I Reply , That it is our Soul also that represents to us the Idea of Light , as often as the Action which signifies the same , doth touch our Eye . XV. It cannot be conceived how these Images should reach the Brain . Neither is it less difficult to explain , how these Images can flow from the Objects . For what virtue is there in them , to produce these Species ? Or how shall they be received into the Organs of the Outward Senses , and from thence be conveyed through the Nerves to the Brain ? If the Species be received by the Sense , how is it that it is not known or perceived by it , since every thing that represents ought to the Knowing Faculty , is objectively related to it , forasmuch as it supplies the room of the thing it represents ? XVI . The Sense of Titillation or Pain , cannot be explained by Species . None of these things were ever yet fully explained by those , who so much cry up Sensible Species ; nor ever will be , as I suppose . Besides , how will they go about to explicate the Sense of Pain and Tickling by the help of these Images ? The Point of a Sword , for Example , is thrust into a Body , which causeth a dissolution of Parts , whereupon Pain follows : Where shall we be able to find either in the Sword , or the Division of the Body , any Species that is in the least like the Sensation of Pain , that follows thereupon ? What Analogy hath the application of our Hand with the Sense of Titillation ? Conclude we therefore boldly , that Pain , and all other Sensations , are therefore excited in us ; because the Parts of our Body , by the Touch or contact of another Body , are locally moved ; which motion of the Nerves , if it be moderate produceth Titillation ; but if violent , Pain . XVII . Light and Sound are Motions only . Moreover , what is Light , but the motion of the Subtil and Aethereal matter , which shakes and agitates the little Nerves of the Retina or Net-work membran or coat of the Eyes ? What is Sound , but the motion of the Air , which strikes the Drum or Organ of Hearing ? Forasmuch therefore as divers Objects variously strike the Organs , it can be no otherwise , but that the Soul , which is placed in the middle of the Brain , must by means thereof perceive the differences of Sensible things : Somewhat in like manner as a Blind-man , by the motion of his Stick , can discern or distinguish a Stone from Sand , and Earth from Water . Because there is nothing , besides Motion , which can strike the Organs of the Senses , or affect the Mind it self . XVIII . Of the Five Senses . Sense ( by which word nothing else is understood , but a Faculty of perceiving Sensible Objects ) is fivefold , viz. Feeling , Tasting , Smelling , Hearing and Seeing , according to the diversity of Objects that move the Nerves of the several Organs ; and the variety of the Organs themselves , and the modes or manner of their being affected therewith . Which cannot but happen , if the Organ that is affected be sound and whole , with a sufficient distance of the Object from the Organ , and a fit Medium . By defect of the first of these , the Sense often mistakes in those that have the Yellow Jaundies , or Agues : For want of the second , the Object cannot be discerned , if it touch the Organ : And by failure of the third , the Sight that perceives Objects through a misty Air , or partly through the Water , and partly through the Air , is very apt to mistake the true Modifications of them . XIX . The Division of the Senses into Internal and External . The Senses are also commonly divided into Internal and External . The Internal are 2 , viz. the Common Sense or Phantasie , and Memory . The External are the 5 already spoken of , and are called External , because they are produced in us by the help of outward Organs : Tho' indeed , if we will speak acurately , all these 5 Senses , called External , are Internal , forasmuch as it is the Soul alone , which residing in the Brain , Sees , Hears , Tastes , &c. It may also be said , that there is but one only External Sense , viz. that of Feeling ; because no Sense can be without Contact and Local motion . Thus , if we would taste any thing , it is necessary that the Food should touch the Nerves subservient to that Sense , that so the said motion may be conveyed to the Brain , or the Common Organ of Sense ; and the same may be said of all other Senses . CHAP. XI . That the Senses are an Effect of the Nerves ; and that the Soul of Man only feels , for asmuch as it resides in the Brain . I. How the Nerves ●onduce to the forming of the Senses ; and how the Soul rules in the Brain . THo' it sufficiently appears from the foregoing Chapter what Sense is , and how by the Ministry of the Nerves External Objects are communicated to us ; yet it remains still for us to enquire , how the Nerves perform this ; and why the Senses rather have their residence in the Brain , than in any other part of the Body . Both which , tho' they be different Points , I shall comprehend in this Chapter . II. Three things are to be consider'd in the Nerves . In the first place , we are to take notice , that the Nerves are Vessels fitted for the containing and conveying of Spirits , proceeding from the Pith within the Brain . Secondly , That there are 3 things to be considered of in the Nerves ; First , The thin Skins wherein they are wrapt or cover'd , which proceeding from the Coats or Membrans that encompass the Brain , are dispersed throughout the Body into small branches like Pipes . Secondly , That their Inward Substance , which is divided into very fine filaments or Strings , do reach from the Brain , whence they take their rise , to the utmost Parts of the Body , with which these Nervous filaments are interwoven . Lastly , The Animal Spirits , which like a Wind , or most subtil Air , rushing through these little Pipes , do move the Muscles , by way of Inflation or blowing of them up . It remains now that we say something , how those Strings or Capillaments which are within the Tubes of the Nerves , are subservient to Sensation . III. How the Nerves are subservient to Sensation . Which will not be difficult to understand , if we suppose that these Capillaments do reach to the Extremities of all the Members , that are capable of any sense ; so that if any part of those Members , to which the Nerve is fastned , be never so little stirr'd , at the same Moment that part of the Brain from whence that Nerve proceeds , must be moved also . Which we may Experience in a stretched-out Rope , whereof if the one end be touched , the other must be moved at the same time . So that all the diversity of Impressions that are made upon the Brain , do arise from the Nerves , which carry the various Qualities of the Objects along with them . IV. How the Body is excited from External Objects , to move it self . We must therefore imagine , that those small Filaments that are derived from the inmost Recesses of the Brain , and constitute the Pith or Marrow of the Nerves , are so disposed in all those Parts that are the Organ of any Sense , as that they may be most easily and readily moved by the Objects of those Senses . And that whensoever those Filaments are never so little moved , they draw those parts of the Brain , whence they proceed , and at the same time open the Orifices of some Pores , that are in the inward Surface of the Brain , through which the Animal Spirits in the Ventricles of the Brain , begin immediately to direct their course , and through them rush into the Nerves and Muscles that are the Instruments of those Motions , that are altogether like them that are excited in us , when our Senses are so and so affected . V. The Soul of Man hath its Residence in the Brain . As to the second Particular , viz. That the Soul of Man doth feel , that is , sensibly perceive all things ; not as it is in the Organs of the External Senses , but only inasmuch as it is in the Brain , which is the Center and Rise of all the Nerves , this is evident from Examples and Reason . For when we see Light , or hear a Sound , we must not imagine that the Soul exerts this Act of Sensation in the Eye or the Ear ; but that it perceives these things in its own place or seat , by means of the Nerves that reach from those parts to the Brain . For if the Soul did see in the Eye , and hear in the Ear , since both these Organs are double , there must needs follow a double perception of one and the same Object , at the same time : And since the contrary is most evident , it follows , that the Soul feels only in that part of the Body where the 2 Impressions , which proceed from one Object , through the double Organs of the Senses , are united again into one , before they affect the Soul. VI. Proved from the Experiment of Vapours and Wound● . This may be confirmed from manifold Experiments : For we find by daily Experience , that the Vapours which ascend from our Stomach to the Brain , and being condens'd there , do obstruct the passages through which the Animal Spirits have their course , do deprive a Man of the Power of Sensation . We find also that Diseases , which affect the Brain , or Wounds that are inflicted in it , do destroy the Senses ; as is manifest in those that are struck with the Apoplexy . In like manner in Frenzies , wherein the Imagination is spoiled , Remedies are applied to the Head , which would be very foolishly done , if the Senses had their Residence in any other part of the Body . Hence it is that they who are seiz'd with the Apoplexy , are immediately deprived of all their Senses , so as not to be sensible , tho' they be slash'd with Knives or prick'd with Pins . And for the same Reason it is , that Persons that have their Attention fix'd upon any thing , do not take notice of things that are done in their presence ; because the Soul residing in the Brain , is otherwise taken up , so as not to take notice o● the things that ore offer'd unto it . VII . Another Instance taken from those , who are troubled with the Vertigo , or Turning of the Brain . But no mor● convincing Argument can be alledg'd to prove , that the Soul doth sensibly perceive in the midst of the Brain , than that which is taken from the Vertigo , in which all External Objects seem to move round ; whereas indeed there is no such motion , neither in the Objects themselves , nor in the Outward Senses ; but it proceeds only from the Spirits in the Brain , being so moved , which affecting the Soul , it rashly attributes the said Circular motion to the Objects that are about it . VIII . The same thing confirmed from the Pain that persons think they Feel in the part they have lost . Moreover , they that are earnestly busie about Serious Matters , or are wearied with long Study , are sensible of a Pain in their Head ; which I my self , after a little Study , frequently Experience : Which would not be so , if the Soul had not its Residence in the Brain , and did imagine and feel there . Besides , it sometimes happens that Pain seems to be felt in that part which is cut off from the Body ; according to what DES CARTES tells us of a Girl that had her Arm cut off , who afterwards complain'd of a pain she felt in her Fingers . Which could not proceed from any other Cause , but because the Nerves , which came from the Brain to the Hand , upon the cutting off of her Arm , reacht no further than her Elbow , where being affected after the same manner , as they used to be when her Hand was yet pained , made her suppose , that she felt the same pain she formerly felt in her Fingers . For such is the Nature of our Body , that no part of it can be moved by another , which is a little distant from it ; but that it must be moved in like manner by those Parts that come between . As is manifest in a Rope , the End whereof may as well be pull'd or hal'd by that Part which is nearest to the midst , as by the other End opposite to it . IX . When we have leaned long upon our Elbow , we find a Pain in our Little Finger . In like manner it sometimes happens , that after having leaned long upon our Elbow , we are sensible of a Numness in our Little Finger ; because the Nerve which ends in that Finger , being too much prest upon , doth affect the Organ of the Common Sense , as if the Finger it self were so prest . For we are wont to affix the Sense of Pain to that part , which is wont to be moved by the Objects , and wherein the stretched Fibres of the Nerves are terminated . X. In what part of the Brain the Soul hath its Seat. Wherefore it is necessary , that the Soul have its Residence in that part of the Brain , to which the Filaments of our Nerves do reach ; to the end that it may take care for the Security of all the parts of the Body , and may have timely notice of , and provide for any Casualties that happen to the Body . For tho' all the Changes of the Fibres , consist only in some certain motions , which commonly do only gradually differ ; yet must the Soul consider them as Changes that are Essentially distinct , and that forasmuch as they cause so great an Alteration in the Body to which it is joyned . For the Motion , by Example , that causeth Pain , tho' it frequently differ but little from that Motion , the effect whereof is Titillation : Yet , because by the former some of the Fibres of the Body may be pluck'd out of their places , or broken , whereas the latter is an Argument of the firm and entire Constitution of our Body , so it is that the Soul apprehends these 2 motions , as being essentially distinguish'd . As to what particular part of the Brain the Soul hath chosen for its Residence , shall be declared in the next Part of these Institutions . XI . The Impression from the Object is only made upon the Soul. But you 'l say , It cannot be denied , but that we see with our Eyes , and feel pain in our Feet : Why then should we say , that the Function of Sense is only performed in the Brain , and not rather in these outward Organs of our Bodies ? True it is , that the Impression that is made by the Object , is begun in the Organs of the outward Senses ; but it is not perfected or compleated there . We see with our Eyes , forasmuch as the Impressions of Lig ht and Colour are made upon them : But all this while the Action of the Soul , whereby this Impression is perceived , is exerted in the more particular and chief Residence of the Soul ; as will appear more plainly in what follows . CHAP. XII . Of the Senses in particular ; and first of the Touch. I. The Touch is first to be treated of , as being the most common and necessary of all the other Senses . THo' the Touch be but a Dull Sense , and with respect to its Action be Inferiour to the other Senses , yet we must first of all handle it ; not only because it is the most necessary Sense , but also the most common , as being to be found in every Animal , how imperfect soever , and diffused throughout all the Parts of our Body . That it is more Common than the rest of the Senses , appears in this , that the other Senses are nothing else , but several Species of Touching ; which tho' they be perfect and exquisit , yet cannot their Functions be understood , but with some proportion to the Function of the Touch. For no Organ of our Body can be moved , without another Body touching it . Besides , the Touch , like the other Senses , is not tyed to one particular part of the Body , but is found in all the Nervous , Fibrous , and Membranous parts of it . For it is communicated to the whole Body , as a Cap-a-pee Armour , to receive the Attacks and Impressions of all Sensible Qualities It is also very necessary for the defence of Life , and the avoiding of Dangers , which our Bodies are obnoxious to from External Objects . For the Touch is as it were our Monitor , advising us what we are to avoid ; and what we are to do in these , or the other Circumstances . II. What the Touch is . The Touch therefore , as it is distinguish'd from the rest of the Senses , may be defined , An outward Sense that is most common and necessary , by means whereof an Animal doth receive Tangible Qualities . III. The Touch divided into an Inward and Outward . And thus the Touch , as it is taken in a larger Sense , may be distinguish'd into Internal and External : That being the Inward Sense of Touching , which is performed in the Inward Organ ; for seeing that the Nerves and Fibres , which are the the Organs of these Senses , are dispersed within , as well as on the outside of the Body , accordingly there is an inward as well as an outward Sense of feeling . And therefore the Veins , Arteries , Membrans , and their appendages the Coats are partakers of this Sense . Thus the Pain which we feel in our Guts , and in other fibrous parts , belongs to this Inward Touch. For this Sense is excited upon every least motion that is made in any fibrous part , supposing it to be strong enough to be conveyed to the Brain . Book . 1. Part. 8. Chap. 12. G. Freeman Invent : M. Vander Gucht . sculp : To the Right Worshipfull Sr. John Wentworth of North Elmes-hall in the West Rideing of Yorkshire Baronet This Plate is humbly Dedicated by Richard Blome IV. The Organ of the Touch , or Sense of Feeling assigned . The Organ of Feeling is neither the Flesh , nor the Membrans , nor the Skin ; but the Nerves and their Filaments , disperst throughout the whole Body . For this Sense is excited , as oft as the Nerves and their Filaments , being shaken with more force than ordinary , do communicate their agitation to those parts of the Brain they more particularly relate to ; as we see it happens in a stretched Cord , which being shaken at one end , immediately imparts its motion to the other . V. The Opinion of our Modern Anatomists concerning the Organ of Feeling . Our Modern Anatomists fix the Organ of Feeling either in the Skin , the whole Substance whereof is Nervous , or in some Bodies that lye between the Skin and the Cuticle , which with MALPIGHIUS they call the Sinewy , or Nervous Nipples of the Skin , which they take to be the primary and immediate Organ of the Touch ; because these little Nipples or Prominences are found to be more in number , and larger in those parts of the Body that are endued with the most exquisite Touch , as the Palm of the Hands , and the Ends of the Fingers , than in the other parts . MALPIGHIUS first discover'd these in the Feet of a Lamb , Hog , and other Animals ; for as soon as their Hoofs are pull'd off , certain little Bodies do appear extended in length , and reaching to the Surface : So that Hoofs and Nails seem to be nothing else , than the appendages of the Cuticle , and of the Nervous Nipples , which being pull'd out do leave certain hollow Pipes behind them . VI. In what parts of the Body these Nervous Nipples may be discerned . These Nipples are not only discover'd by the help of a Microscrope , but also by the bare Eye , in the extream parts of the Nostrils of some Animals ; as of an Ox , Swine , &c. And that the Organ of Feeling is chiefly to be plac'd in these Nipples , MALPIGHIUS with reason conjectures , because they are nothing else but a propagation of the Nerves and Tendons , proceeding from the Fibres of the Muscles . And forasmuch as the Touch is performed , as well as all the other Senses , by the Nerves and Fibres of the Tendons , it seems that no more proper Organ of the Touch can be assigned : Forasmuch as according to STENO's Observation , the Skin is for the most part nothing else , but a Texture of Nerves , Arteries , and Veins . VII . What are the Objects of the Touch The Causes or Objects of the foresaid Affections , which the Schoolmen call Sensible Qualities , are Heat and Cold , Moisture and Driness , Hardness and Softness , Heaviness and Lightness , Smoothness and Roughness , Titillation and Pleasure ; and other Modifications of the Body , which produce some change of Motion , Texture and Figure in them . For all Objects indifferently cannot affect the Touch , but it is requisite that the Affection be considerable , and such as to make it self sensible . For seeing that the Nerves , which are the Organs of this Sense , are of some Bigness , they cannot be moved by very little Bodies ; because , according to an Axiom in Natural Philosophy , a Body greater in Extension being at Rest , hath by so much the greater force to resist a less . Which is the Reason that we do not feel the continual Steam and Emanation of little Bodies ; for tho' they pass through our Skin , yet because their Littleness is such that they cannot sufficiently shake the Nerves , neither are they able to make any impression upon the Organ of Feeling . And the same also is to be said with respect to the other Senses . VIII . How the Sense of Feeling is performed . But to the end we may more clearly understand how this Sense comes to be exerted , we must call to mind , what hath been said in the foregoing Chapter , viz. that some Strings or Filaments proceeding from the Brain , are dispersed throughout all the parts of our Body , and that these constitute the Nerves , which being filled with the Animal Spirits , are stretched out like so many Cords , which are diffused throughout the whole Body . Which Nerves whenever they are somewhat forceably shaken , immediately draw the parts of the Brain ; as when a Rope is pull'd , the Bell which is at the end of it sounds immediately ; and by this means the Soul , which resides in the Brain receives a sense of the thing which hath moved the Nerves . Thus when we put our Hand to the Fire , the particles thereof being swiftly moved , are of sufficient force to agitate the Skin that covers the Hand , and consequently the Nerves that reach from the Hand to the Brain , and thereby to make the Soul to perceive the sense of Pain . For such is the near Relation between the Brain and all the Nerves diffus'd through the Body , that the Soul by their means receives the Impression of External Bodies . Thus we can distinguish several Bodies , by means of a Stick held in our Hands , and reaching to the Bodies we would distinguish , as Stones , Clay , Metals and the like . Yea there are some persons born blind , who only by their Touch can distinguish the several sorts of polisht Marble , and the various impressions of Coin. And for the same reason it is why any motion on the Lips is so very sensible , viz. the great tenderness of the Skin that covers them , which makes the Fibres of those Nerves that constitute it to be easily shaken and moved , as before hath been said of a stretched Cord. IX . An Objection Answered . It may be you will object that the Nerves are not so stretched , as a Rope or Cord is . I grant it , yet doth not this hinder the instance of a Cord to be very proper here , since it is not needful that in a similitude all things should be the same . Now a Cord and a Nerve agree exactly in this , that as when one end of a Cord is touch'd , the other is shaken ; so when any Nerve in the Body is moved , the motion is immediately conveighed to the Brain . For tho' the Nerves be not so much stretched as a Cord , yet their apt disposition for the communication of motion , fully makes amends for that want of Tension in them . X. Whence the Difference of the Touch proceeds , seeing that the Nerves are the same . But if it be so that the Sense of Feeling is performed by the Nerves derived from the Brain , it may be queried whence so many species of Feeling do arise : For tho' there be many Nerves in the Body of Man , and manifold Tangible Qualities , yet there are no different Nerves made use of , for the producing of these different Affections : for the very same Nerves that produce Pain , cause the sense of Pleasure also , and so of the rest ; but the same Nerves receive the impulse of the several Objects , being sometimes moved by these , and at other times by others . XI . This difference proceed from the Diversity of the Objects . I Answer , That this Diversity proceeds from the difference of the Objects that affect and move the Nerves , much like the strings of a Lute which give a different sound , according to the different touches of him that plays upon it . Thus when the insensible parts of any Body , variously agitated , are more swiftly moved than the Particles of our Body , our Soul perceives Heat , but if more slowly , then we are made sensible of Cold. Hence it is that what to an Aethiopian seems cold , to a Scythian appears hot . The same thing is likewise experienced by those that enter in Bathes distinguisht by several degrees of Heat : for having continued some time in a luke-warm Bath , to prepare themselves to endure a very hot Bath , when they go back out of the hot Bath to the luke-warm Bath , that which before seemed hot to them at their first entrance , feels now cold to them . XII . What is the Cause of Pain and Pleasure . When the small filaments of the Nerves are pusht against , or drawn with so great violence , that they are broken and rent from the Member to which they were fastned , the Soul is made sensible of Pain ; but when the said filaments are not broken , but moved without receiving any hurt , the Soul perceives a kind of Bodily Pleasure , which is called Titillation ; which tho' with respect to its cause , it seems to differ but little from Pain , yet doth it produce a quite contrary effect . So when the particles that terminate a Body , do with an even surface press the Skin , the Soul apprehends it to be smooth and polisht ; but if the surface of the thing be uneven , then it perceives it to be rough and rugged . In like manner when Bodies are strongly born downwards , they represent to the Soul the sense of Heaviness ; but when they do but gently tend downwards , they afford the Soul the perception of Lightness . When the Particles of a Body are so disposed as to resist the motion of our Hand or other Members of our Body , the Soul perceives the quality of Hardness ; whereas when the Particles of any Body are so moved , as not to stop or resist the Bodies that meet them ; the sense of Fluidity is imparted to it . And the same is to be said of all the other qualities that belong to the touch or sense of Feeling , which the Soul perceives differently according to the variety of the modes whereby the Nervous Fibres are affected . XIII . How it comes to pass that since the Touch hath so many Objects , it is not manifold . Another Difficulty may be started here , viz. how the sense of Feeling can be said to be one only sense , seeing it hath so many Tangible Qualities for its Object . For if the Senses be distinguisht from each other by their Objects , why may not the Sense of Feeling be said to be manifold , because it hath so many different qualities for its Objects ? XIV . Answer to the Question . Notwithstanding all this , we must conclude the Touch or Sense of Feeling to be but one : for tho' the Tangible Qualities do differ , according to the various Modifications of Bodies , yet they agree all in this general Notion , that by means of the Nerves they move the sense of Feeling . As the sense of Seeing is not said to be double or twofold , because it hath for its objects Light and Colours , which are exprest by 2 different names ; nor the sense of Tasting , tho' the Tongue , which is the Organ of it be affected with various Tasts or Relishes . Besides , the Senses are not only distinguisht by their Objects , but also by the Organs and Modes whereby they are affected . And forasmuch as all Tangible Qualities agree in this , that they impress the same Affection upon the Organ , and that the whole difference of them depends on the Diversity of this Impression , it is evident that the Touch must be lookt upon as being only one Sense , and not many . XV. Some Deceptions of the Touch , instanced . The sense of Feeling is sometimes deceived , as when Women that are subject to the Fits of the Mother , complain of an extream cold in their Heads . And thus also places under ground , appear to us very cold in the Summer time , and in the Winter warm ; when as indeed upon making a tryal with a Weather-glass , we shall find that there is no such change in the Temperature of the Place . CHAP. XIII . Of the Sense of Tasting . I. What the Tast is . THE Tast is an External Sense , whereby an Animal , with the help of his Tongue and Palat , which are furnisht with the Nerves subservient to this Sense , perceives the several differences of Tasts and Savours . Or according to others , the Tast is a sensation , by means whereof , after that the Savoury Object hath made a due impression of it self upon the prominent and porous little Nipples of the Tongue , the Soul residing in the Brain , perceives and judges of the difference of the Savour or Rellish . For according to the sentiment of our Modern Anatomists the Organs of Tast are the foresaid prominent and porous Nipples of the Tongue , or small Strings which proceed from its inmost membran . II. Wherein the Touch and Taste do agree and differ . The Tast , hath some affinity with the Touch ; and if we will believe ARISTOTLE , it is but a species of it . For whereas in the other Senses , the Organs are affected by their Objects at a distance , and are agitated by little Bodies flowing from them , the Organ of the Tast , requires an intimate contact with its Object , and cannot be moved by it at a distance . Yet there is this difference betwixt these Senses , that the Organ of the Tast is more intimately penetrated by the savoury Object , which more deeply insinuates its self into the Fibres thereof , than Tangible Objects enter the Skin . Hence it is that we see that persons who are over-tired , or that are fallen into a swoon , do presently revive , upon the drinking of a Draught of Wine ; and Men that are like to die , are strangely recovered by taking some of the Cordial that is called the Imperial Water : which strange effects are only to be attributed to this , because the Particles of Wine and the Imperial Water dive deep into the Pores of the Tongue , and mingling with the Spirits do greatly revive them . III. Two othe● ways whereby these Senses do differ . Moreover these Senses differ also , First by reason of their several Organs : For the Organ of Taste , is not like that of the Touch , diffused thoughout all the Fibrous parts of the Body , but throughout one part only , viz. the Tongue ; which alone is affected by Savoury Objects . Secondly , According to the Disposition that may be found in the said Organ : Thus a Tongue that is dry and without Moisture , toucheth dry things , but perceives no manner of Tast in them . Thirdly , Thick and whole Bodies affect the Organ of Feeling ; whereas that of the Tast cannot be imprest upon but by thin and liquid Bodies , or such as are divided into small parts : and for this Reason Pills that are swallowed whole communicate no Tast to the Tongue or Palate , or very little , and that only because some of the particles , in gliding over the Tongue , are dissolved . Book . 1. Part. 8. Chap. 13 Lens . Inv. I. Kip Sculp . The Organ of the Tast is the Tongue , as well as the Inward and Spungy part of the Palate , because the surface of them both is full of those innumerable Nipples before mentioned . As concerning the Tongue it is evident , that being of a soft , loose and spungy substance , it is most proper to receive Savoury Bodies , mixed with some moisture . And accordingly we experience that if we touch any Savoury Matter with the tip of our Tongue only , we perceive the Tast of it : for the Nerves of the fifth and seventh Conjugation terminate in the Tongue , which being inserted into 9 or 10 Muscles , become the Instruments of various Motions . For besides the Functions of Speaking and Singing , this Organ of the Tongue is of great use towards the moistning , mixing and swallowing of the Meat . All these Muscles divide the Tongue longwise into 2 parts , by means of a certain Tendinous String , so as that this Organ , as well as those of the other senses , seems to be Double . Now that not only the Tongue , but also the upper part of the Throat or Palate is the Instrument of Tasting , is very manifest , for when any savoury meat passeth towards the Gullet in order to its being swallowed , we perceive the Tast thereof , tho' it never touched our Tongue in the inward part of our Palate ( which some call the swallow ) forasmuch as its Flesh is Spungy , and very proper to admit the Particles of Savoury Bodies . V. That the Particles of any Savoury Body may enter the Tongue , Moisture is required to dilute or mingle with the said matter Now to the end that these Particles may penetrate the Pores of the Tongue , and pass through the Texture of the Fibres , some moisture is required for to steep , resolve , melt and conveigh them . Hence Nature hath so provided , that the Mouth where the Food is chewed , hath a continual moisture attending it , by means whereof , as a Menstruum , the Particles of Sapid Bodies are melted , and conveighed into the Organ . For as we find that an Herb being bruised with a Pestle , or any other Instrument in a Wooden Dish or Bowl , doth with its Liquor penetrate the Wood , and insinuate it self into its Pores ; as is evident from the Smell and Savour of the Herb that remains in the Bowl : in like manner our Food being minced in our Mouths , by the help of our Teeth into small pieces , and steept in our Spittle , doth easily affect the little Nerves of our Tongue , and is conveighed to the inmost parts thereof . And therefore Salt before it can affect the Tongue and be tasted , must be melted with some moisture ; neither can Pepper be tasted except it be first steeped in , or mingled with the Spittle that is in the Mouth : for dry Bodies , without the Vehicle of moisture , cannot be conveighed to the inmost Recesses of this Organ . VI. How the Sense of Tasting is performed in the Tongue . From what hath been said , it may easily be understood , how the sense of Tasting is performed , viz. when any savoury matter , being , as it were macerated with the Spittle , is conveighed into the spungy substance of the Tongue , and in its passage doth after divers manners affect the Nerves inserted into the Tongue , by vellicating , biting , striking , tickling , wringing and stirring the same . Which different Affections are carried from the Organ to the Brain , where they make a different impression on the Mind , according to the diversity of the motion of the Fibres of the Organ . So that now it remains onlv to be explained whence the great variety of Tastes and Savours doth proceed . VII . Whence the Diversity of Savours and Relishes doth arise . Which will easily be done , if we remember that the Faculty of perceiving Tastes in us , is not unlike to that whereby we are sensible of Pain ; that is , to the actuating of this Power nothing else is required , but that the savoury Bodies do move the slender filaments of the Nerves of the Tongue , or the prominent Nipples before mentioned , in such a manner , as Nature hath ordained for the effecting of the sense of Tasting . In like manner as to the production of the sense of Pain it is sufficient , that the Nerves subservient to the Touch be moved after such a particular manner : So that all the difference of savoury Bodies doth depend on the Thickness , Figure and Motion of their Parts . This may be evidenced by some instances ; for let us suppose the foresaid Fibres of the Tongue to be agitated 4 several ways , viz. by Salt , Vinegar , or any other sour Liquor , Common Water and Brandy , so as that the Soul thence is stirred up to perceive 4 distinct Tastes . We shall easily conceive that Salt doth therefore prick , and as it were cut the Organ , because it consists of long , stiff and various corner'd Particles , which with their points prick the small Fibres of the Tongue , and enter the same without the least bending or plying . Vinegar applied to the Organ , doth as it were slash and cut it , and by compression somewhat contract it , because the particles thereof by entring obliquely into the Nerves , do slash the thin particles thereof , and dashing against the thicker parts they become bended , and so enter the pores slantingly . Common Water doth not enter the pores of the Tongue at all , and therefore doth neither prick nor pierce it , because its particles do only softly flow upon the Tongue , and lying sideways , because of their easie pliableness and bending , are scarcely perceptible by the Taste , and therefore Water is lookt upon as insipid . Brandy doth bite and vellicate the Tongue , because the particles thereof penetrate most deeply , and are most swiftly moved . And the like account may be given of all other savoury Bodies , which according to the different disposition of their parts , can make different impressions upon the Organ of Tasting . VIII . The Difference of Tastes may proceed also from the Variety of the Organ . The difference of Tastes may also be caused by the Organ ; for the various Texture and Disposition of the Tongue , may occasion a difference in the Taste of things . Thus persons that have a more fine and tender Organ , take delight in delicate Savours and Tasts ; whereas those whose Instrument of Tasting is more gross , delight in more course viands and less exquisit Tasts . Thus Country People generally delight in course and Salt Meats ; whereas Children are pleased with Sugar and sweet things . The reason is , because the Fibres of the Nerves are more fine and subtil in Children , and therefore are easily moved with a sweet Taste : whereas those of Rusticks are more gross and stiff , upon which nothing but strong and sharp things can make any impression . Wherefore it is no wonder to see that the Food which pleaseth the Palate of one Man , doth disgust another ; because of the different disposition of the Organ in them both . Yea it frequently happens that the same person , who at one time is pleased with some kind of Meats , may at another have an aversion against them ; and we commonly experience , that those things which are most grateful to our Palates when we are Hungry and Thirsty , become unpleasant to us when we are full and satiated , and this because of some change in the Texture of the Organ , the Savoury particles not affecting the Tongue and Palat in the same manner , when the Pores of it are more straitned , than when they are dilated and more open . IX . Why some loath those Viands which before they desired . Hence it is that Old men do loath some sorts of Meat , which they most delighted in when they were Youths ; and that some Persons , after having accustom'd themselves to some sort of Food , are greatly delighted therewith , tho' before they loathed and could not endure it : Even because either the Organ in process of time grows dryer ; or else , for that by Custom , and the frequent use of some sorts of Diet , some folds are formed in the Organ , which easily admit the particles of the Meat , which before they could not receive . The said variety of Taste may also proceed from the Tongue , being ting'd with the Savour of some Salt , Bitter , or Sowr matter , which hath not been effac'd by the eating of some Sweet thing , or by the drinking of a large draught of Liquor ; for the Eating of Sweet-meats , and especially Drinking , doth so resolve the hard and longish particles of Salt , the crooked particles of Bitter things , and the cutting particles of Sowr things , as to carry them along with it : And therefore it is that Drink tastes more grateful after the eating of Sowr things , and more delightfully affects the Tongue . X. Deceptions of the Taste , and the Causes of them . Sometimes the Taste happens to be mistaken , not about the Affection imprest upon the Organ , but about the Cause from whence it proceeds . Thus they who are sick of the Jaundies , are not mistaken in that they suppose themselves to perceive a bitter taste ; for they do so , because the Gall is mingled with their Spittle ; but they are deceived in attributing that bitter Taste to the Food they eat : In the same manner as they suppose the Objects they behold to be yellow , when indeed it is the Gall that depraves their Organ , and makes all the Objects they behold to appear of that Colour . And in like manner , sometimes our Meat seems to taste bitter to us , whereas indeed the said sense of Bitterness proceeds either from some Humour , wherewith the Tongue or Palat is tinged ; or from the Vitiating of the Nerves , that are assistant to the Fibres of the Tongue . Yea , it happens sometimes , that we seem to perceive a Taste , without receiving any food , which cannot proceed from any other Cause , but from the defluxion of some Humour that hath such a kind of taste , or from some fault in the Blood , that is conveyed to the Organ of Tasting ; as may be demonstrated by many Examples . CHAP. XIV . Of the Sense of Smelling . I. Why Beasts excel Men in the Sense of Smelling . IT is certain , that Man is Inferiour to many Beasts , as to the exquisitness of the Sense of Smelling : For Beasts , when they light upon any unknown food , do presently , by the Quickness of their Scent , discover the Qualities thereof , Nature thereby preventing those Mischiefs which otherwise might be the effect of their Voracity , by their too greedily devouring things hurtful to them , if they were not assisted with such an Exquisit Scent , which discovers to them the Suitableness or Unsuitableness of the Food to their several Natures . By this Quickness of their Sense of Smelling they hunt out their Prey , tho' at a considerable distance from them , and tho' never so cunningly hid ; according to the Relations we have in Story of Ravens , Vulturs , and Apes . Thus Dogs , by the Vivacity of this Sense pursue their Game , and follow the Steps of their Masters , tho' far out of their sight . Tigers , by the help of their quick Scent , pursue those that have robb'd them of their Whelps ; and Cats find their way home , from whence they have been carried many Miles in a close shut-up Basket. II. Why the Sense of Smelling is more dull in Man. than other Animals . Now this Sense is more dull in Man ; not only , as some suppose , because he abuseth this Faculty , and fills himself with the Vapours of too great variety of Meats : But either , because his Organ is not of such an Exact Texture ; or because his Brain is too moist , and so dulls and clogs the force of the Odorous Steams , by entangling the particles thereof , and hindring them from entring the Pores of the Nostrils . And for the same reason it is that we can smell nothing under Water , because the Nostrils being stopt with Water , cannot admit the Air that conveys the Odorous Exhalations . Hence it is that they that have their Heads stuffed with a Cold , in a great measure lose their Sense of Smelling for that time ; because the Pores that should admit the Odorous Exhalations are filled with the Rheum . III. What the Sense of Smelling is . The Scent , or Smelling , is an External Sense , whereby an Animal , with the help of his Nostrils , which are furnish'd with very subtil Fibres , receives all manner of Smells . In all Smelling there is first a Collection of Odours , the Instrument whereof is the double Cavity of the Nostrils : In the Next place , the Sensation of the collected Odour , is propagated by means of some most Subtil Fibres : And , Lastly , this Sense is terminated and compleated by the agitation of the Nerves and Spirits , in the Conarion or Pine Apple-like Kernel . Book . 1. Part. 8. Chap. 1● Lens Inv. I. Kip Sculp . To the Right Worshipfull Sr. Comport Fitch of Eltham and Mount-Mascall in Kent Baronet , Son and heyre of Sr. Thomas Fitch of the said places Knight & Baronet Deceased , by Ann his Lady Daughter & Heyress of Richard Comport of Eltham aforesaid Gentleman , deceased . This Plate is humbly Dedicated by Richard Blome . V. The Organ of Smelling is in the Nostrils . Sense it self assures us , that the Organ of Smelling is in the Nostrils ; for who doth not experience that in them he Smells , that is , perceives the Affection that is imprest by Odorous Objects ? To which we may add , that forasmuch as this is a most subtil Affection , as being imprest by that most fine Steam wherein the Odour is diffused , it doth not seem possible to be performed in any Bone , Gristle , or Thick Membran , and consequently that it can no where so properly be performed , as in this fine Texture of the Nervous Fibres . VI. Why those that are flat Nos'd do not smell well . Whence it is that those who have their Nostrils flatted or beaten down by any bruise or fall , have but a weak or dull Sense of Smelling ; because the Nerves design'd for this Function are too much comprest in the upper-part of the Nostrils , and cannot give a free passage to the Odorous Exhalations . And on the contrary , Dogs , Hares , and other Animals , that excel in this Sense , have many little Pipes in the thin membran of their Nostrils , through which these Odorous Exhalations are freely transmitted . VII . How the sense of Smelling is performed . The Sense of Smelling therefore is effected , when the most thin Particles of Bodies flying in the Air , I mean such only as are Subtil and Brisk enough for this purpose , do strike , tickle and vellicate the most thin fibres of the Organ , and affect it after various manners . The Hollowness of the Nostrils is a great help and advantage to the perception of Odours , especially if the said Cavity be wide at the Entrance , because then the Odoriferous Particles are more readily conveyed to the Brain . For the Cavity of the Nostrils , is like a Chimney or Funnel , through which the Odorous Particles do ascend , and being gather'd together , do penetrate the winding of the Nostrils . Wherefore they that have long Nostrils , have a more quick Scent than others ; because they attract more of the Odorous steams , whereby the Sensation becomes more strong and vigorous . VIII . Air is necessary for the conveying of the Odorous Exhalations . The Sense of Smelling cannot be performed without Air , wherewith the Odoriferous particles being mingled , they are drawn in by the Nostrils . For Air is the most proper Medium for the diffusion of Odours ; not only because it is of absolute necessity to Respiration , but also because the Odour is both further and more easily diffused and transmitted thereby . Accordingly we see , that the stench of Carkasses is mostly carried towards that part whither the Air is driven by the Wind. For this is the Nature of this , as well as of all the other Senses , that except the Organ it self be struck upon , no Sensation is effected ; for the Organ of Smelling , must be struck with the same Force wherewith the Air is drawn in . For the Air being the Vehicle of the Odoriferous Exhalation , a good part of it is let down into the Wind-pipe , whilst the other more affecting a streight motion , enters the Nostrils , and dasheth against the Organ of Smelling ; which Odoriferous Steam is so long perceived , as the Air is drawn in by the Nostrils , and ceaseth to be felt , when it is breath'd out again . The Reason whereof is , because the Pipes and Passages in the Nostrils , which are opened by drawing-in of the Breath , and the Entrances whereof are towards the end of the Nose , are shut again upon the breathing-out of the Air , and consequently it is necessary that thereupon the Sense of Smelling should be intermitted , and all sensible Impression upon the Organ cease . Whence it is easily understood , why one that hath a stinking Breath doth not perceive the smell of it himself , whilst he breaths it out through his Nostrils ; because the hollow Passages of the Nostrils are shut up , and Odours cannot be received contrary to the Course or Grain of the Fibres . IX . The Odorous Object is to be at some distance from the Organ . The Odoriferous matter cannot be perceived , except it be at some distance from the Nostrils ; because when there is a due Distance , the Terrestrial Particles , which are always in great abu●dance mixed with the Air , are the more easily di●sipated and disperst : As a Sword must be unsheathed before it can do any Execution ; and an Arrow must be taken out of the Quiver , before it can make a wound . For the abundance of Evaporations do too much agitate the Nerves , subservient to the Sense of Smelling , and by stopping up their Pores , hinder the supervening Steams from penetrating them . Hence it is , that an Odour that comes from far , is more grateful and pleasant , because those Heterogeneous and Grosser particles , which are mixed with the Odoriferous steam , do by degrees sink downwards , leaving the rest pure and unmixed ; which entring the Nostrils , produce a purer and more refined Scent . X. What a Smell or Odour is , and whence diversity of Odours doth proceed . Forasmuch therefore as every Odour is a Steam , which exhaling from the Odoriferous Body , and being diffused through the Air , doth move the Organ of Smelling in the Nostrils , after a certain determinate manner , and with Force enough , it may be easily understood , what is the chief Cause of the variety of Odours . For seeing that these Steams consist of almost innumerable Filaments ( of which we have an Example in the Steam of a Candle newly extinguish'd ) which may be variously crooked and bent , it cannot be question'd but that according to the variety of their Particles , they do more or less move the Odoratory Nerves , and thereby give occasion to the Soul , of perceiving great diversity of Odours : So as that those steams produce grateful and sweet Odours , whose Motions are very moderate , and duly temper'd together ; and those on the contrary produce loathsom Smells , which are more vehemently agitated , or else whose Motion is too dull and slow . For those Bodies that do not strike the Organ , and in some sort press upon it , cannot excite the Sense of Smelling . XI . Deceptions of the sense of Smelling . That we may be deceived in the sense of Smelling , is evident from divers instances . For CARDAN in his 8 th Book de Varietate Rerum , Chap. 43. declares , that he always perceived the Smell of something or other in his Nostrils , as sometimes the smell of Flesh , sometimes that of Frankincense , and at other times the smell of some other thing . LEWIS XI . in his melancholy fits , conceited that every thing that was about him had an ill smell . There was also a French Poet that was a very melancholy Man , who being sick of a Fever ▪ and persuaded by his Physicians to have his Temples anointed with Unguentum Populeum to make him sleep , conceived such an aversion for it , that for many years after he imagined that every thing that was about him , smelt of it . There have been some persons likewise ( as BARTHOLINE informs us , Hist . Nat. Centur. 4. ) that could smell things that smelt well , but not such as did stink , or had an ill smell . The same Author tells us of an Apothecary , who had lost this sense , by the too frequent use of Camphire . And SCOTTUS Phys . Curios . Cap. 33. gives us an account of a Woman , who never could smell any thing . CHAP. XV. Of the Sense of Hearing . I. What the Sense of Hearing is . HAving spoken of the Senses of Feeling , Tasting and Smelling , we next proceed to handle that of Hearing . Now Hearing is an External Sense , whereby an Animal , with the help of his Ears , and the Nerves implanted in the Cavities thereof , receives Sounds . Or more plainly , Hearing is that Sensation , whereby from a due motion of the small Fibres of the Auditory Nerves , imprest upon the Ears , and conveyed to the Brain , or common Sense , the Soul perceives Sounds , and judgeth of them . For Hearing , as well as every other Sensation , is founded upon the help and mutual concurrence of Soul and Body . For in this Sense the Presence and Action of the Soul is required ; because when the Soul is otherwise employ'd , the Excitation of Sounds signifies nothing to it , tho' they be never so loud and violent ; for then tho' the Ears be open , yet no sense is perceived , because of the inadvertence , and want of Attention in the Mind . II. The Usefulness of this Sense . This Sense is more Excellent than any of the foregoing , and is equally necessary to Man , and other Animals . For seeing that many things at a distance might attack Animals , to their great hurt and prejudice , except they were timely forewarned of them , Nature hath furnisht them with this Sense of Hearing , whereby they are forewarned to avoid things inimical , and to prosecute such are grateful and suitable to them . Moreover Hearing is of the Highest and most Necessary use to Man for the accomplishing of his Mind , as ARISTOTLE speaks in his Treatise , De Sens . & Sensili Cap. 10. For seeing , saith he , that in this short term of life that is allowed us here , we have not leisure enough to search into the nature of all things , this Sense gives us the advantage of being instructed , by listning to the informations of Learned Men , whereby we are taught our Duties , and how we are to behave our selves , not only in a Civil Society , but also in our private and Houshold concerns . For by the Company and Conversation of Learned Men , we attain the knowledge of Sciences , and are admonished how we may become both Wise and Prudent . III. The parts that belong to the Organ of Hearing . Before we can throughly understand by what means this Sense is produced , it will be necessary for us to know the structure of its Organ , and the principal parts that compose it . The outward Lappet of the Ear , which is formed by Nature for the collecting of the sound , and receiving its first impulse , consists of the flap or lappet and the Gristle of the Ear ; this part , which hath a pretty large compass , is by degrees straitned , till it ends in the Hollow of the Ear. Next after this outward Cavity follows the Passage , or Auditory Cave , which is crooked and turned into several windings , to the end that the sound , which is carried with the Air , may be encreased by insinuating it self into them . This Winding Hole leads to a most thin and dry Membran , which is terminated by , or enclosed with a Bony Circle , which is commonly called the Drum of the Ear , because it obliquely admits the impulse of the Air , being struck with the sound . To this part 3 small Bones and a Muscle are joined , viz. the Hammer , the Anvil and Stirrup , which all 3 hang together ; for the Hammer is jointed into the Anvil , and the Anvil into the Stapes or Stirrup . The Cave wherein the foresaid little Bones are found , is by some called Concha or the Shell , and by others Pelvis or the Bason ; which is large enough , and in a manner of a round figure , and leads to a vast number of little Cavities . Which Cave , with all it s annexed Cavities is not empty , but filled with Air , which some call Inborn , but wrongly , forasmuch as it is frequently changed , as appears from the free and open passage the Air bath to them . IV. By what Instruments the Sense of Hearing is performed . These things premised , it will not be difficult to understand in what part of the Ear Hearing is produced . For it is apparent , that it cannot be effected in its outward Cavity , because the outward Ear is only like a Funnel , through which the shaken Air may the more freely enter into the Auditory passage ; neither is this Sense performed in the Auditory Cave or Hole , seeing that the same seems only to have been framed by Nature , for the conveying of the sound , and for the perpetual out-flowing of the steam . Neither is it effected by the little Bones , for seeing that they want Nerves which are the Organs of all the Senses , neither can they be supposed to transmit the sound to the Brain . It remains therefore , that the same be performed in the Auditory Nerves that are latent in the said little Cavities , there being 2 Nerves hid within the said Cavities , which receive all the shakings and agitations of the adjacent Air ; by means whereof the representation of sound is communicated to the Soul. For the Air by shaking the Membran of the Drum , doth at the same time move the 3 linked Bones , to which these Nerves are joined : which tremulous impulse being conveyed to the Brain , by the help of the foresaid Nerves , do give an occasion to the Mind , of conceiving the Idea of Sound . Book ▪ 1. Part. 8. Chap. 15. G. Freeman In : M. Vander Gucht . sc : VI. Whence the variety of Souna's doth arise . The Differences of sounds proceed from the Diversity of motion , as well in the sounding Body , as of the Air that is agitated thereby . For that the strings of a Citttern do give so much a sharper and quicker sound , the more that they are stretched , and wound up higher ; and the lower and duller , as they are less stretched ; is only because the motion of Cords that are high wound is more swift , and consequently impresseth a swifter motion on the Air , than that which is but slack . And therefore the sound is said to be shrill and sharp , when the shakings or beatings of the Air , be more frequently reciprocated , and the Organ more swiftly struck by them : and it is accounted a low or Deep sound , when the Vibrations of the Air are less frequent , and the Organ is more leisurely struck with the impulses thereof . So that all the Difference there is betwixt a high and Deep sound is this , that in a High or Sharp sound the parts of the Air beat more frequently and fast upon the Organ , whereas in the Base or Deep Sound , the Concussions admit of longer Intervals ; as is evident in a shorter string wound up to the same Height , and of the same Thickness , compared with a longer , because the former will yield a more high or shrill sound than the latter , forasmuch as it affords more frequent Vibrations , and beats the Air and Ear with quicker repeated strokes . VII . The Causes of the Harshness and Sweetness of Sounds . In like manner we find a sound to be either hasher or sweeter , according as the Beatings or Wavings of it are more or less equal . For if the surface of the Body , whence the Sound or Air is reflected , or driven back , be rough and rugged , the sound is more harsh : For the ruggedness of the surface , causeth some particles of the Air to be pusht away sooner , and others later , as passing through an unequal space ; wherefore it is necessary that some of them must come to the Ear sooner than others . And for this Cause it is that a Trumpet that is not very polisht and smooth , doth give forth a more harsh sound . Whereas a grateful and pleasant sound consists in the equality of every Undulation of the Air , beating against the Ear , because in this case that whole portion of the Air , arrives at the Organ , at the same time , and strikes it with an even motion . VIII . The Air is the Medium that transmits Sounds The Air is acknowledged by all Philosophers to be the Vehicle of Sounds , which proceeding by a waving motion from the Sonorous Body , doth impress that Affection upon the Organ , which is called the Act of Hearing : For since the Air is in continual motion , it is easily determined by the Body that is stricken , to produce a sound in us . I am not ignorant that some famous Modern Authors are of opinion , that the whole Atmosphere of the Air is not the medium for the transmitting of sounds , but only the most pure part of it ; founding their Sentiment upon this Experiment , that every sound , be it great or small , whether it be carried before or against the Wind , yet doth always , in an equal measure of time , pass through an equal space of place , which could not happen so if it were conveyed by the undulating motion of the entire Body of the Air. IX . 〈◊〉 Sound 〈…〉 to the Ear , according as the wind is for it o● against it . But I cannot altogether assent to this assertion ; for tho' a sound may be heard by 2 Men , standing at an equal distance from the Center , at the same time , notwithstanding that the Air blow violently , yet cannot it be inferred from thence , that the sound doth not depend upon the Undulation of the Air. For tho' it be true , that a Body that is swiftly moved , cannot be carried by that which is more slowly moved ; yet is that Body to be excepted from this general maxim , which upholds and supports another . For let us suppose , that whilst a Globe doth move upon a Table , the Table also with a very slow motion moves towards it , it cannot be questioned but that in this case the Globe doth participate of the motion of the Table : In like manner those small particles of the Air , which convey the sound , must more leisurely transmit the same to the Ear , if the Wind be contrary . But that 2 Men in an equal distance from the Center , do both hear the sound at the same time , this is to be imputed to the sound it self , which being most swift in its motion , the difference of time seems to be insensible . X. A Sound is better heard with the wind than against it . Moreover , they who alledge the foresaid Experiment , do acknowledge , that the sound is heard fuller and plainer by him to whom the sound is conveyed by the Wind , than to him to whom it comes against it . If this be true , we know that the Wind cannot make a greater sound , except it carry the particles of sound along with it , which it cannot do without moving them ; neither can it move them , but that it must accelerate or hasten them , and cause it to come more swiftly to the Ear. Let us conclude therefore , that Sonorous Bodies do shake the whole circumambient Air , or rather determine it , as being already in motion , to tend to some particular part . And therefore that not only the thin and subtil Air , is the vehicle of the sound , but also that which is thick and full of vapours . This manifestly appears in the Pneumatick Engin , for when the Air is wholly drawn out of it , the motion of a Watch can scarcely be heard in it . Which Experiment doth evidently demonstrate , that the gross Air doth conduce much to the conveying of the sound , and promotes its propagation . XI . How an Eccho is formed . Forasmuch therefore as the sound is diffused , as it were along every line , from the Center of a Sphere , towards the Circumference , it may so happen that the particles of Air , that are on their way to convey the sound to others , may meet a hard Body , and being unable to penetrate or agitate the same , are forced to turn back and be reflected , and to rebound their motion to those parts whence they had received it , and those again to others , and so on . By which means it comes to pass that the same sound is heard again , being several times repeated , which is called an Eccho . For Sound as well as Light , is subject to Reflexion , and when-ever a smooth and hollow hard body is interpos'd , it rebounds ; but yet with this difference , that a sound , because of the slowness of its motion , cannot advance far in one Moment , but wants a longer space of time for its diffusion . And therefore the further the person that receives the sound is distant , from that Body that reflects it , the more time the voice in rebounding takes up : whereas the Light in one moment of time reflects from several Bodies , and enlightens many places at once . If the sound meet with divers Bodies , at different distances from each other , that are proper to rebound it , there follow many Reiterations of the same Voice , viz. when the former sound being vanisht in the neighbouring Air , another is formed by the Air that is more remote ; which being afterwards beaten back from Opake and Hard Bodies at a greater distance , doth again shake the neighbouring Air , and that either once only , or more frequently . Yea an Eccho sometimes happens in Bodies that are very near , as in the Tiles of Houses ; as when a Voice directed from a high place , and level with the Tiles of the Houses , enters the hollow that is under the said Tiles , and from thence rebounds towards the Speaker , whence it proceeded . XII . The Hearing is subject to some Deceptions . Many mistakes may happen to the Sense of Hearing , as well as to the other Senses , which are not imputed to the inward Affection it self , but to the Cause of it . Thus a Buzzing Sound , or Noise in the Ear , which is commonly attributed to the External Object , hath no other cause , but that some part of the Steam , or the inclosed Air , or a swelling in the Muscles of the Ear , affecting the Organ of Hearing , stirs up some undulating motions : wherefore it is that Sick People , because of some corruption of their Blood , or by reason of some Excrements that cause an obstruction in the Ear , do frequently complain of this noise in their Ears . Another mistake or Deception in the Sense of Hearing is , when upon cutting off of the Lappet of the Ear , the Sound is received like to Water running down from on High ; for when this outward Shell or Hollow is taken away , the Sound enters straight into the Auditory Cave , and wants that due determination it should receive from the outward part of the Ear : For the Ear-lappet , as before said , was framed by Nature , for the collecting or gathering of the Sound ; wherefore when that is wanting , the Sound immediately enters into the Bason , as if it came from several parts , as it happens in the noise of running Water . Neither are we to forget that mistake , which we are sensible of when we stop our Ear , for then we perceive a kind of tremulous Buzzing or Noise , as if the Air did role about in the Ear ; the reason whereof can be no other but this , that the Steam is continually passing out of the Ear , which being hindred from coming out , it pusheth against the Organ of Hearing , whence this noise doth arise , which we suppose to be inward . As I was not long since with some Friends going upon the Thames , between the two Churches of Fulham and Putney , it hapned they were ringing Fulham-Bells , the sound whereof was so rebounded from the opposit Church , that it seemed equally to proceed from both places ; neither was it easie for us to determin whence it came , so that we had various disputes about this Deception , being much affected with the Diversion it gave us . CHAP. XVI . Of the Eye . I. What the Eye is . FOrasmuch as the Eye , is the Organ of Sight , and that within the Recess or Hollow thereof , the Images of the several Objects are represented , we shall never be able throughly to understand how Vision or Sight is effected , without describing the disposition and structure of its parts . The Eye , therefore , is the outward Organ of Sight , through the Transparent parts whereof the Rays of Light pass , till they arrive at the Net-work-coat or Membran , and there variously moving the small Capillaments of the Nerves , suitable to the variety of Objects whence they proceed , do represent or pourtray the Image of the Object . The Inward Organ of this Sense are the Optick Nerves , which reach from the Net-work-like-membran to the Brain , and receiving the motion from the said Membran , convey it to the common Seat of the Senses . II. Of the Figure of the Eye . And to the end we may more exactly apprehend all these particulars , suppose we an Eye cut through in the midst , but yet with that Art , as that all the several Humors contained therein , keep the same place they had before , without any part of them being spilt ; and then it would appear to be of the same structure , as it is represented in this Scheme , wherein DB , CBD , set forth its round Figure , that marked BCB , being the forepart of it , and BAB , the other part , which is enclosed within the Bone of the Head. III. What the Horny Coat of the Eye is . BCB , is a hard and thick Membran , which the Physicians call the Horny Coat of the Eye , being , as it were the Vessel and Receptacle to contain all the other parts of the Eye ; and this part is transparent , and more prominent or convex than the Remainder , to which the Rainbow , so called , belongs , which almost is of different colours in all Men. It sticks out forwards , because if it were more flat , the Beams which slantingly touch its surface , would scarcely ever reach the Bottom of the Eye , through the entrance of the Apple thereof ; so that we should only perceive a very small part of the Hemisphere at one cast of the Eye . IV. The Uveo● ▪ or Grape-like Coat , and the Apple of the Eye . DEF , is a thinner Membran , stretched out like a Hanging or Tapistry , and is called the Tunica Uvea or Grape-like Coat , for that it is perforated like a Grape when the Stele is pluckt out of it . In this Membran or Coat is a small hole , the Apple of the Eye , in the midst of the Rainbow , marked out by the Letters FF , called in Latin Pupilla , because in it a Baby or little Image is represented by the Rays that are reflected from the surface of the Eye , to every one that looks upon the Eye of another . The Apple of the Eye , in a Man , appears Black , because that part of the Coroides , or the Grape-like Coat , which answers to it , is of that colour . The contexture of Fibres rang'd in a circle , and which outwardly is placed about the hole of the Apple of the Eye , being diversified with various colours , is called the Rainbow . V. The Lig●ments of the Eye-lids . NN , are many black Filaments , called Processus Ciliares , which do every way surround , and gird in a certain soft and transparent Body , called the Crystalline Humour , and keep it suspended in the midst of them . VI. The Watry Humour . The space contained betwixt EKE , is filled with another transparent Humour , which is therefore called the Watry Humour , because in all respects it is like Water . This Humour gives the Round Figure to the Eye , refracts the admitted Beams , and in this disposition imparts them to the Crystalline Humour . The Eye continually receives of this humour by some particular Vessels which are in the Sclerotica , which is a part of the Horny Coat or Membran , and which are inserted into it , near to the Apple of the Eye , whence it is that when the Horny membran is pierced , and the Watry Humour by this means is spilt and let out , the said loss may be repair'd in the time of a few Hours . VII . The Crystallin Humour . The Mid-part L , is a certain transparent Substance , rather of the figure of a Lentil , than Spherical ; for the greatest part of it is cover'd by the Rainbow , and the Fore-part of the greater Round , is less than the other , and the Hind-part of the lesser Round , is the biggest . It is because of its Compactness and some appearing Hardness , called the Icy Humour , but more commonly the Crystallin . This Humour is white , like Starch , and is of the consistence of Wax , which melts , and may be comprest , but cannot be spilt . VIII . The Glassy Humour . The remaining Hollow of the Eye GMI , is taken up by a whitish Humour , more transparent than the Crystallin or Watry , and of a mean consistence betwixt them both ; because it can more easily be contracted and displayed ; and yet it is not so liquid , or thin and flowing , as the Watry Humour . It is commonly called the Albumineous and Glassy Humour , because it hath the consistence and colour of the White of an Egg , and is transparent like Glass . This Humour rests upon the Network-like Membran , and contains in it self the Crystallin ; it is enclosed in a very thin Membran , which keeps it from spilling . IX . The Crystallin Humour causeth much the same Refraction of the Rays , as Glass doth . Experience informs us , that the Crystallin Humour causeth much the same Refraction , as Glass and Crystal doth ; and that the two other Humours produce somewhat a less Refraction , and much about the same as Common Water : So that the Rays of Light pass more easily through the Crystallin Humour , than through the two other Humours ; and yet more easily through these , than through the Air. X. The Optick Nerve . HZ , is the Optick Nerve , which takes its rise from the Hinder-part of the Brain , not far from the beginning of the Back-bone , the Capillaments whereof GHI , being disperst throughout the whole Space ABH , do cover the whole bottom of the Eye , constituting a sort of a most fine Net , which from its Expansion is called Retiformis , or Net-work like , and Retina by Physicians . Now these Capillaments , by means of the Convex figure of the Eye , and of the Crystallin Humour , do collect the Beams , and communicate the motion they have received to the Brain , and present it to the Soul that resides there . XI . Why the Surface of the Coats of the Eye is black . My design is not to reckon up here all the Coats that enclose the Eye , seeing that the knowledge of them doth not conduce to the understanding of the Sense of Seeing ; and therefore shall only take notice , that the surface of these Coats is wholly obscure and black in those Parts that face the bottom of the Eye ; and this , to the end that the Rays which fall upon the Net-like Coat GHI , and from thence are are reflected to the Grape-like Coat , might be extinguish'd by that Blackness , lest being again reflected to the Retina , or Net-like Coat , they should disturb and confound the Sight . XII . The six Muscles of the Eye . OO , are six Muscles , outwardly fastned to the Eye , by the help whereof it can readily move it self every way . Of these Muscles 4 are called Direct , whereof the first lifts the Eye upwards , the second turns it downwards , the third draws it towards the Nose , and the fourth withdraws it to the opposite part from the Nose . The other 2 are called Oblique or Slanting , because they encompass and surround the Eye ; for with the one of them the Eye is enabled to give a slanting or oblique Cast , and with the other it is rolled round . XIII . How the Right or Direct Muscles serve to move the Eye . When the Right Muscle , which is above the Eye , is fill'd with Animal Spirits , the Eye looks up ; and the 3 other Muscles being fill'd in like manner by turns , assist it sometimes to look downwards , and sometimes to turn it to the Right or Left. Besides , it is evident by the situation of these Muscles , that when all of them are shortned , they at the same time alter the figure of the Eye , by making it more flat than it was before . XIV . Why the Apple of the Eye is of a Convex figure . That part of the Eye , which is marked BCB , is of a Convex figure , to the end that the Rays proceeding from the Objects , which of themselves have not force enough to enter the Apple of the Eye FF , might be united by a various Refraction , and by this means might have force enough strongly to move the Hairy-strings of the Optick Nerve HZ . For the Refraction which is made in the Crystallin Humour L , procures strength and distinction to the Sight . XV. The Apple of the Eye can be contracted and dilated . Besides , this is to be observed , that the Apple of the Eye is liable to Contraction and Dilatation , according as the Objects , to which the Eye is directed , are nearer or farther off ; or more or less enlightned ; or according as the Beholder doth more intently or carelesly view the Object . For this Coat hath the power to dilate or narrow it self like a Muscle , and by this means to enlarge or contract the Apple of the Eye , viz. by stinting the entring of the Rays , and by causing more or less to pass through it . XVI . The Motion of the Apple of the Eye is voluntary . Wherefore this motion may be called Voluntary , tho' for the most part it happen without our Attention ; for it doth nevertheless depend on our Will , or on those motions which do accompany the Will or desire of throughly beholding any Objects . In like manner as the motion of the Lips and Tongue , conducing to the formation of Voices , is called Voluntary ; because it is consequent to our intention of Speaking , tho' we do not mind , yea , and are ignorant also , what kind of motion every Letter requires . CHAP. XVII . Of Colours . I. Colour is nothing else , but a Modification of Light. FOrasmuch as Colours are the Objects of Seeing , we are to consider what they are , and wherein their Nature doth consist , before we undertake the Explication of the Sense of Seeing . We suppose therefore in the First plcae , that no Colour can appear without Light , and that consequently Colours are nothing else but certain Alterations or Modifications that happen to the Light. Secondly , that even Transparent Bodies also , appear distinguish'd with various Colours , if the Light that falls upon them be variously reflected to the Eye of the Beholder . As may be seen in a Round Ball of Glass fill'd with Water , in the Bubbles that Children sport themselves with , in a Prism , in the Rain-bow , and in other Bodies . II. What Light and the Beams thereof are . We must also suppose the Light to be the Action of a Subtil matter , the Parts whereof , as so many small Pellets , do roll continually through the Pores of Earthly Bodies : So that there are innumerous Rays or strait Lines by which this Action is communicated , which proceed from the several Points of a Lucid Body , and reach to the several Parts of the Body which they enlighten . III. That innumerable Rays proceed from every Point . For we are to conceive , that there is no surface , how polish'd and smooth soever it may appear to the Eye , but is really rough and unequal ; so that every Point assignable in the outside of the most smooth Body , is to be imagined like a little Hillock or Prominence , from whence innumerable Beams may be dispersed round about . For otherwise , if the surface of any Body were altogether polish'd and smooth , it could not shed the Rays roud about , but only directly to the opposite side ; so that the Object would only reflect such direct and Parallel Rays , as could only reach to the Eye obliquely or slantingly placed . IV. The Rays of Light may be reflected after divers manners . Moreover we are to take notice , that tho' the Rays pass strait along through Trasparent Bodies , yet they are easily turned aside by others they meet with ; much after the same manner as a Ball struck against a Wall , rebounds variously , according to the difference of the Surfaces it lights against . For it rebounds otherwise from a plain and even Surface , than from a crooked ; and otherwise from a hard , than from a soft : For being struck against a soft Body , it loseth its motion ; whereas lighting upon a hard , it rebounds immediately . V. The Rays , besides their motion in right Lines , may also be moved round . Lastly , We are to take notice , that as a Ball , besides its motion whereby it tends from the Hand to the Wall in a right Line , and from thence rebounds elsewhere , is capable also of being moved round its own Center : So likewise the Rays of Light cannot only move to Right Lines , but may be so reverberated by the Bodies they light upon , as to take upon them a Circular motion , wholly in the same manner as a Ball struck by a Racket , rebounds against the floor or ground . VI. VVhat Colours are . From what hath been said , it follows , that Colours are not in the Colour'd Bodies , but are only such a disposition , which either swallows up the Rays of Light , or variously reflects them to the Eye , and according to the diversity of this motion , doth differently affect the most subtil Organs of the Sight , and by this means produce a Sense of Colours in us . So that Colours , as they are assignable to Bodies , are nothing else , but different Modes , according to which Bodies receive the Beams of Light , and either drown them , or with great variety reflect them to the Eye . VII . VVherein the Nature of Colours ●oth 〈◊〉 . Let us suppose therefore , that there are some Bodies , which when they are struck with the Beams of Light , do choak them , and break all their force ; and such are those that are of a Black Colour , which is common to them , and Darkness . That there are also other Bodies that reflect the Beams , some of them in the same manner as they receive them , viz. such Bodies , whose Surface being exactly polish'd , serve for Looking-Glasses . Others , which reflect them confusedly this way and that way ; and again , that amongst these some reflect these Rays so , as that the Action of Reflection is not spoiled by any the least alteration , viz. those Bodies that are of a white Colour . And that others again produce a Change like to that which happens to the motion of a Ball that is struck with a slanting Stroak of a Racket ; and such are the Bodies that are of a Red , Yellow , Blue , or other Colour . VIII . Colour is nothing else , but a Modification of the Rays o● Light. For when the Rays of Light are sent forth from a Lucid Body , the Globuli of the second Element , which constitute those Rays , are either evenly or unevenly driven forwards , and whirl'd about by a different Proportion ; because of the various Nature and Constitution of the Bodies they meet with . And from this proportion of their direct Motion and Circumvolution , all Modifications of Light , or Colours do proceed . This is evident in Transparent Bodies , in which many Colours do appear , whereof no other Cause can be assigned , besides those different Modes , according to which the Beams of Light are admitted . As may be seen in the Rainbow , Peacocks-Tails , and in the Necks of Doves ; forasmuch as these Colours cannot be said to be any thing else , but the Light it self received in the outward-parts , and so or so reflected and conveyed to our Eyes . For all the Particles of Light , that enter a Transparent Body , are not drowned or swallowed up of it , but many of them rebound , which by means of various Reflection and Refraction reaching our Eye , do produce in us the Sense of Colours . This will appear clearly to us in the Prism MNP , 2 of the Surfaces whereof , MN , and NP , are entirely plain or flat , and so inclined the one towards the other , as to constitute an Angle of about 30 or 40 Degrees ; and therefore if the Rays of the Sun ABC , that light perpendicularly upon the Surface NP , do penetrate or pierce it obliquely about the Hole DE , which exhibits a Shadow at both parts of the said Hole , to the Rays DF , and EH , passing through it ; it is manifest by Experience , that the Rays passing obliquely through that Hole , from the Glass into the Air will be refracted , and reaching the Surface HGF , ( which we suppose to be White ) they will exhibit divers Colours from H to F , and that in this order : In the first place they will represent a Blew or Violet Colour about H ; then a Green ; in the 3 d place , a White about G ; 4 thly , a Yellow ; and 5 thly , a Red Colour about F. Now what happens in this Production of divers Colours , but only this , that the Globuli of those Rays , which after the same manner of Inclination , falling upon the lower Surface of the Prism NP , on the Left hand towards DN , have a Shadow , caused by the slow motion of the Globuli of the 2 d Element ; whereas on the Right , towards EP , they have a Light , caused by the swift motion of the said Globuli ; which causes them to move more swiftly about their own Centers , than they do in a Right Line . Book . 1. Part. 8. Chap. 10 Lens . Inv. I. Kip To the Worshipfull William Vpton of Lupton in the County of Devon Esqr. This Plate is humbly Dedicated by Richard Blome . Book 1. Part 8. Chap. 18. To the Honoured Sr. Iohn Morden of Ricklemarsh in the Parish of Charleton in the County of Kent Baronet , and to Susanna his Lady . Sister to the Right Worshipfull ▪ ●r. Joseph Brand of Edwardstone in Suffolk Knight . This Plate is humbly Dedicated by Richard Blome . The West Prospect of Morden Colledge , in the Parish of Charleton , in the County of Kent , now Erecting at the sole charge of the Honoured Sr. John Morden of Ricklemarsh in the Said Parish of Charleton Baronet , who hath liberally endowed it for the Maintenance of forty decayed Merchants , in a more then vsuall manner , as well as to Dyet , and Apartments to themselves , as to their Stipents or Salaryes , for their Support in a Gentile lively hood , This being the noblest , Greatest , and most Charitablest Guist of any Subject in these three Kingdomes , — Especially in the life tyme of the Donor , to his Eternall Glory , and for the good Example of others to follow soe pious a Worke. IX . Whence the difference of Colours doth arise . These things being well observed , we shall easily understand , that by how much nearer the Rays of Light , passing through the Hole DE , do approach to the Left Shadow D , by so much greater will be the whirling about of the Globuli of the 2 d Element , than their Progress : Whereas the nearer they approach to the Right Shadow E , they are whirled about so much more slowly , than they move fore-right . We understand likewise , that those Globuli which intersect the middle of that Light about G , have an Equal proportion of Retardation or Acceleration of their Circumrotation and Procession . And seeing that we find the White colour represented there , we must conclude that . Whiteness consists in that Proportion : But that the Nature of the other Colours , as of Blue , Yellow , Green , Red , consists in the different swiftness or slowness of their whirling about , exceeding that of their Process , or moving forwards . X. All Colours are true Colours , and none only apparent . I am not ignorant , that most Men distinguish these Colours from true ones , and call them Apparent only ; but these do not seem to understand the genuine Nature of Colours , which consists only in this , that they appear and are conspicuous . For it is a contradiction , that any thing should appear and be false . All Colours therefore are the effect of Light , variously reflected from the Surface of Bodies , suitable to the situation of their outside Particles , their whole difference consisting in the various Modes of receiving it , and reflecting it to our Eyes . Thus we call that a Black Body , which extinguisheth and choaks the Rays of Light ; and therefore Black Bodies carry a resemblance of Darkness . Blue Colour , which approacheth to the Nature of Black , is that which reflects only a few Rays : And 't is for this Reason , that Sea-water , where it is deep and transparent , appears of a Bluish Colour ; because there are but a few Rays reflected from its Surface , and none of those that penetrate the Substance of it , do return . XI . What a White Body is . A White Body is that , which reflects the Rays to the Eyes , in the same order as it receives them . Of this colour are all those Opake Bodies , whose Surface is so rough and rugged , that it reflects from all Sides the Rays it hath received parallel . So that in order to our having the Representation of a White Colour , we must receive many Rays from the Object ; whereas for to see a Black Colour , we must receive none at all . And therefore the Nature of Blackness must consist in a property which Black Objects have , to drown and mortifie the Beams they have received , as we have mention'd before . So that we may conclude , that those are Black Bodies , whose Surface is proper to extinguish and quash the Rays of Light ; and that those are White , whose Surface hath the Property to diminish the Light , by reflecting it from all sides . XII . Wherein the difference between Black and White Marble doth consist . But some may Object , that Black and White Marble consist , in a manner , of the same parts , so that if one of them swallows or extinguisheth the Light , the other ought to do so likewise ; and consequently , that the variety of Colours is not well grounded upon the Variety of Objects , which do variously reflect the Rays of the Sun. To which we Answer , That true it is , that Black and White Marble do , in a manner , consist of the same Parts ; but yet in the Black there are some soft Parts , which by taking in or swallowing the Light , produce a Black Colour . For Black and White Marble may be compared to a Pumice-Stone , whose Pores are filled with a kind of Oily Matter , and the White to a Pumice-Stone that is only fill'd with Air. For it may easily be understood , that when particles of Sand dash against this latter , they will rebound presently ; but not from the former , because the Oily Matter , that fills its Pores , doth quash their motion , and in a manner swallow them . XIII . What a Red Colour is . That is a Red Body , which in reflecting the Rays of Light , makes the Particles thereof to whirl strongly about their own Centers , in like manner as a Ball turns round by being struck against the Earth , or with the slanting stroak of a Racket . Yellow , Purple and Green Colours , proceed , as hath already been said , from this various Rotation of the Particles about their Center . So that the Particles of the Subtil Matter , that constitute a Yellow colour , are more slowly whirl'd about , than those that make a Red : And those that make a Green , more slowly than those that constitute a Yellow colour : And the Purple colour is nothing else , but mixture of a Blue with a Red colour , which imparts its brightness to the former . XIV . Colour is nothing else , but modified Light. From all which we may conclude , That Colour is nothing else , but Light Modified ; for it is evident , that a Coloured Object cannot of it self affect the Sight , as being for the most part immoveable , or at least not reaching the Eye , where it is perceived ; neither can any thing be thought of that moves the Eye at that time , but only the Light reflected from the Body seen . CHAP. XVIII . Of the Sense of Seeing . I. What the Sense of Seeing or Sight is . THe last in order of all the outward Senses , and the most Excellent of them , is the Sight ; whether we consider the Object of it , or the manner whereby Objects are conveyed to the Seeing Faculty . For Sight is a Sensation proceeding from a due and various motion of the Optick Nerve , made in the bottom of the Eye , by the Rays of Light coming from an Object , and from thence conveyed to the Brain ; by means whereof the Soul perceives the illuminated thing , together with its Quantity , Quality , and Modifications . The Sense of Seeing begins indeed in the Eye , but is perfected no where but in the Brain , where the Soul is affected with the Impressions of visible Objects . II. What the Object of Sight is , and how many-fold . The proper Object of Sight is every thing whereby the Eye becomes affected and changed , in order to the production of Sensation : And this Object is twofold , viz. Light and Colour ; for these 2 cannot be perceived by any Sense but that of Seeing . And tho' some reckon up 5 several species of common Objects , viz. Motion , Quiet , Number , Figure and Magnitude ; yet to speak accurately , Light only is the Object of Sight , whether the same proceed from the Lucid Body , through a transparent Medium , and so retain its own name ; or whether it be reflected from Opake Bodies , and represent the Image of them ; or whether in its reflexion , it be this or the other way refracted , and so affect the Eye , under the name and Species of Colour . III. The Order of things to be handled in this Article . Forasmuch therefore as Vision or Sight follows from the Action of the Object , upon the inward and outward Organs ; and since it is necessary that visible things should convey some Images to the Eye ▪ and from thence to the Brain , Our Business will be in this Chapter to enquire ; First , How , and in what manner Rays do proceed from the Objects . Secondly , How Objects imprint their Images upon the Organ ; and Thirdly , How these Images are communicated to the Brain . IV. What Rays are to be considered in Vision , or with respect to the Sense of Seeing . As to the First of these , we are to observe , that all the Rays that reach the Apple of the Eye , one of them always proceeds from the Object that is directly opposite to the said Apple , which passing through the midst of it , penetrates directly , and without any Refraction to the bottom of the Eye , or the middle of the Net-like Coat . And this Ray is commonly called the Axis of Seeing , or the Optick Axis . It is also called Perpendicular , because it enters straight into the Apple of the Eye ; whereas the other Rays which recede from this middle Ray , tho' they enter the Apple , yet it is only slantingly or obliquely . So that the Cone , whose Axis , is the Axis of Vision , is the streightest of all , the others being more oblique , as they farther recede from it . This will be more clearly apprehended by the Figure . Figure 7● . Let therefore K be the Eye before described , and the Object TRX . Now it is evident that Rays proceed from every point of this visible object . But forasmuch as those Rays only concur to the Sense of Seeing , that enter the Apple of the Eye , therefore we are only to consider those Beams which fall upon that part of the Horny Membran , which directly answer to the Apple . Wherefore since our business here is to enquire what the Rays are , whereby the point R , doth affect the bottom of the Eye , we shall only here consider those which proceed from that point , viz. RN , RL , and the middlemost between these two , drawn from R to S. And because the Middle Ray RS , is perpendicular to the surface or outside of the Eye , therefore neither doth it suffer any Refraction by passing from the Air , into the Watry Humour , but passeth straight from R to S ; for seeing that it falls perpendicularly upon the other intermediate parts of the Eye ; it is necessary that it be directed in like manner to S. But forasmuch as the Ray RN , doth not alight perpendicularly on the surface of the Eye , and being to pass from the Air into the Water , it is manifest that therefore it must suffer a Refraction , by approaching to the Perpendicular RS , and seeing that this Ray is not Perpendicular , whilst it passeth out of the Watry Humour , into a Harder Body , viz. the Crystalline Humour , it must a second time be refracted , and from thence entring into the Glassie Humour , which is softer , it must again be turned aside ; and thus still approaching nearer to the Perpendicular RS , after many Refractions , it arrives at the point S. The same is also to be said of the Ray RS , which after having undergone some Refractions , joine it self to the 2 other Rays , that are united in the point S. And thus it appears how the Object R , acts after the same manner upon the Bottom of the Eye , as if it sent forth one Ray only , that might perform the same , which all those Beams do that are contained between FF . V. Rays flexing from divers points of an Object , fall upon so many points of the Retina , or Net-like Membran . From what hath been said it will appear , what happens to those Rays , which from another point T , enter the Eye . For all the Beams that enter the Eye must undergo such Refractions , as that they may all of them be terminated and united in the point V. And therefore we may say , that the Points TRX , and any other intermediate ones , do all of them send their Rays , in a manner into one and the s●me Point of the Bottom of the Eye ; and on the other hand , that every point of the Bottom of the Eye , receives only the impression of one Point of the Object . So that it happens , when ever we have a mind clearly and distinctly to view any Object , that we direct our Sight , or the Axis of Vision to every part of it successively , and so take a particular view of the whole surface . VI. How the disposition of the Eye comes to be changed . Tho' the Rays only that proceed from Objects directly turn'd towards the Apple of the Eye , by passing through it , penetrate to the bottom of the Eye , yet may there be several other collections of the Rays , according to the different disposition of the Organ . As appears in Old Men , who have only a confus'd Image of Objects that are near them : And on the other hand , those that look Asquint , and have prominent Eyes , do more distinctly see things near at hand , and less exactly , such as are at a greater distance . The Reason of which difference is , because the Eye is of such a make or constitution , that according to the different distance of the Objects we have a mind to view , it may be extended , and so become flatter . Thus when we direct our Sight to any Object , that is too far distant , to be distinctly perceived by us , according to the ordinary constitution of our Eye , the Eye by means of the 4 direct or straight Muscles , is made plain or flat , because all of them draw it downwards to the bottom of the hollow wherein the Eye is placed ; by which means the Retina approacheth near enough to the Crystalline Humour , to be present to the new Collection of Rays which proceed from one Point of the distant Object . And on the other hand , when we have a mind to direct our Sight to an Object that is too near to us , then our Eye becomes dilated by the help of the 2 Oblique Muscles that do encompass it , and being blown up or swell'd , by the introduced Spirits do press the Eye ; whereby it comes to pass , that the space which is between the Crystalline Humour and the Retina , becomes large enough for the Rays , which proceed from the Point of the near Object , to be again collected and united in the Retina . VII . Why Old Men see things that are near them , confusedly ; and Squint-Ey'd persons , things that are far from them . Old Men therefore cannot exactly perceive Objects that are too near them , because their Humours begin to dry up , and their Bodies waste and grow learner , whereby the Convexity of the Horny and Crystalline Humours is diminished and so grows flatter , by which means the Eye becomes somewhat broader than it was in time of Youth . Now this alteration of the Parts of the Eye , doth not suffer the Rays proceeding from a near Object , and constituting the sides of Cones , to unite in the Retina it self , but make them pass on as if they would unite beyond it . Whereas those who see Asquint , and have prominent Eyes , do but imperfectly behold things at a distance ; for their Eyes being longer and protuberant , the Rays that proceed from one point of the distant Oject , do meet before they come to the Retina , and afterwards spreading themselves , fall only upon a little part of the bottom of the Eye . And therefore those who have such prominent Eyes , do approach the Object to their Organ , to advance the too short points of the visive Cones to the Retina . For the nearer a thing is approached to the Eye , so much the more are the Rays thereof turn'd aside , and constitute shorter Visive Pyramids or Cones . But Old Men remove the Object farther from their Eye , that by making the points of the Cones longer , they may reach the Retina . VIII . Convex spectacles are of most use to Old Men , as Concave Spectacles to Squint Ey'd persons . Hence it appears , that Convex Spectacles are most useful for Old Men ; as on the contrary , Concave Spectacles are most helpful to such as are Squint Ey'd . For seeing that the former stand in need of having the Rays contracted , to the end that the points of the Cones may be brought to the Retina , this is effected by a Convex Spectacle : but whereas the latter stand in need of a greater dilatation of the Rays , thereby to advance the Cusps of the Cones towards the Retina , this is effected by a Concave Spectacle . For by the interposing of a Convex Glass , the Rays which before went to the Rainbow , and further , are by this means gathered into the Apple of the Eye , so that Rays are now received by the Eye from those parts that were hid before , and those which before were joined together , by the interposition of them , are made distant from each other , and consequently represent the whole Object bigger than indeed it is . But by the interposing of a Concave Glass , many Rays , which before entred the Apple , are thrust outwards to the Rainbow , or more outward parts ; so that those parts which were separate before , do now unite , and by means of this contraction represent the whole Object less than it is . IX . How the Object forms its Image in the Eye . As to the second , viz. the forming of the Image of the Object in the Organ , it will not at all be difficult to conceive how this is done , supposing we do well apprehend that the Object acts only upon one point of the bottom of the Eye , viz. upon that which is directly opposite to it ; and so likewise that one only point of the Retina , viz. the middlemost is affected by that one point of the Object . For the Rays that proceed from External Objects , at the bottom of the Eye , act upon some Latitude of the Optick Nerve , which as to the Figure doth as much resemble it , as the Lineaments of an Excellent Painter , drawn in a Picture , can be like him . Besides , there is another reason for this latitude of the Retina being like the Object , viz. because it receives so many impressions in all its parts , as there are different Colours or different degrees of Light , in all the parts of the Object . And because the name of an Image or Likeness is attributed to that thing , which hath some resemblance with the thing it expresseth ; therefore we may well give this name to the Latitude of the Retina , on which all the Rays proceeding from the Object do fall ; and consequently may affirm , that the Object doth pourtray its similitude or Image in the bottom of the Eye . X. This Image is not in all things lik● unto the Object . Neither are we to look for any more perfect likeness between the Object we behold , and its Image , than there is between the Objects and Images , that appear in a darkned Room , where only one little hole is left for the Rays of Light to enter , which are received at a convenient distance upon white Paper or a Sheet . For tho' in this case the Images of the Objects be very exactly delineated , and their Qualities sufficiently express , yet they appear inverst , so that the right parts of the Object are left in the Image , and those which were uppermost in the Object , are neathermost in the Image . As appears in the Figure before represented , where we find Y , which is on the left side , represents X , which is at the Right ; and V , which is at the Right , T , which is at the Left. But how this comes about shall be shewed in the next Chapter . XI . How the Images of the Objects arrive at the Brain . As to the Third thing to be resolved how the Resemblances of Bodies are conveyed from the Eye to the Brain , this also will be easily apprehended ▪ if we consider that these Representations pourtra●ed in the Eye , and admitted to the place of the Extremities of the Capillaments , which compose the Optick Nerves are so imprest , as that the Rays touch those Capillaments , not according to their whole length , but only with their extremities . And because this impression which is made at the end of every Capillament , reacheth to the other , it cannot be otherwise , but that the whole Image of the Object must be conveyed to that place , where these Capillaments are terminated , that is , within the substance of the Brain . The R●●s therefore that flow from the Body X , to the E●● , touch the end of some of the Capillaments of the Retina or the Optick Nerve , at the point Y , and those that come from the Body R , do in the point S , touch the Extremity of some other Capillament ; and those that proceed from the Body ▪ T ▪ the end of another V , and so on . And since Light is nothing else but Motion , or a propension to Motion , it is evident that all the Rays that are come from XRT , being of force enough to move the Capillaments YSV , are consequently of force enough to move the Brain . By which means an Image is again formed in the inward surface of the Brain , which faceth the Cavities thereof : For by the word Image nothing else is understood here , than the various Motions of the Parts of the Brain , and so likewise those represented in a Looking Glass , at the Bottom of the Eye ▪ &c. are nothing else but such kind of motions . XII . How it comes to pass that only one Sensation is perceived in the Brain . But it may be you will enquire , how it comes to pass that the Images proceeding from External things , and entring the Brain , do not exhibit these two , but one only Object , when yet there be 2 Optick Nerves which equally convey the motion imprest upon them ? XIII . Answer . To this I answer , that there is a certain Kernel , in the midst of the Ventricles of the Brain , called Conarion , in which the 2 Images , proceeding from both the Eyes , are united , by means of those Spirits that fill the Cavities of the Brain . And this Kernel is called the Residence of the Common Sense , because the Soul immediately exerciseth its operations in it . When therefore at any time we behold an Object , by Example a Flower , the Light that is reflected from it , doth delineate 2 Pictures or Resemblances in each of our Eyes , and these draw 2 others , by the help of the Optick Nerves , in the inward surface of the Brain ; which Representations being conveyed to this Kernel , do meet there , and are united ; which Kernel consequently acting upon the Soul , represents to it the Image of that Flower . XIV . Why we assert this Kernel to be in the Midst of the Brain . Neither do we without good ground assert this Kernel to be in the midst of the Brain , as being the Principal Seat of the Soul , where all Sensations are performed . For we find that all the other parts of the Brain are double ; as we have 2 Eyes to see with , 2 Ears to hear , and 2 Hands to handle , and the same may be said of the rest of the Organs of our Senses ; and yet we see but one Object , and hear but one Sound , &c. wherefore It is necessary that both these Images , or rather Motions proceeding from 2 Organs , should meet together in one place , before they be considered of by the Soul. Neither is any such single part to be found in all the Brain , besides this Kernel , which is placed in the very midst of the Ventricles of the Brain , and consequently is surrounded by the Spirits , and therefore may well be accounted the seat of Common Sense , that is , of Cogitation , and therefore also of the Soul it self . CHAP. XIX . How Vision , or the Sense ef Seeing is performed . I. The Soul feels or is sensible by means of the motion of the Nerves . HAving thus explained how the Light is transmitted through the Humours of the Eye ; how Objects communicate their Images to the Organ , and how the said Images enter the Brain ; it remains now that we explain , how this Image , communicated to the Brain , doth produce that Sensation in us , whereby we are said to See ; and in the next place what are the Causes of the Clarity and distinction of our Sight ; and Lastly , how the Qualities of Objects , viz. their Situation , Distance , Magnitude , Figure , Motion or Rest , are thereby discerned . Now that we may the better understand how this Spiritual Image is delineated in us , we are to call to mind , what hath been before handled Chap. X. § 6. viz. that such is the Nature of our Soul , that by the force of those Motions , which are imprest on that part of the Brain , whence the thin Capillaments , or Hair-like Strings of the Retina derive their Original , various Sensations are excited ; so that the whole difference of them depends on the various motion , which every part of the Object doth excite . Thus the Soul , by occasion of some motions that are made in the Nerves which belong to the Ears , perceives Sounds ; and by means of the motion of those Nerves , that assist the Organ of Tasting , and act immediately upon our Soul , the Sense of Taste is stirr'd up in us , and so of the rest . II. What the Images of Objects are . For these Impressions are nothing else , but various motions of the parts of the Brain , and of the Animal Spirits , affecting the Glandula Pinealis or Pine-Apple-like Kernel ; to which when the Soul of Man attends , he discerns visible Objects , tho ▪ these motions are not like the Objects which they represent . Just after the same manner as one that walks in the Dark , or i● blind , distinguisheth Objects by means of a Stick , tho' neither the Stick , nor its Motion bear the Image of them . Or as Words written or spoken , serve to convey the knowledge of things to us , tho' they be no resemblances of the things they bring to our Minds . III. How it comes to pass that some Objects appear more clearly than others . It is manifest therefore , that the sight of any thing will be more clear and lively , according as there are more Rays proceeding from the Object , and entring the Eye : For by this means the impression made upon the Capillaments of the Optick Nerve is the stronger . The largeness of the Apple of the Eye , conduceth also to this purpose , by giving way to many Rays , proceeding from the same point of the Object , to enter the Eye , in order to the representing of its Image in the bottom thereof . Hence it is that we dilate and open the Apple of our Eye more in viewing a distant Object , than one that is near us ; because then more Rays enter the Eye from the several points of it , than when we do straiten it and make it less . And for this reason it is that remote Objects , appear more clearly to us , than such as are very near to us , and the Colours of those appear more lively , but of these more dull and weak . IV. What is the Cause of the Distinction of Vision . As to the Distinction of Sight , whereby the parts of the Object are discerned in their proper Place , Situation , Figure and Colour , it is certain that the same proceeds from the Refraction of Rays . Now to the end that the Sight of any Object may be very distinct , and admit of no confusion at all , it is necessary that all the Rays , which from the same point of the Object , are directed to the same point of the Horny Membran , be so refracted , as that they may at last meet and be united in the point of the bottom of the Eye . But seeing that this doth not happen , save only in those Rays , which proceed from that point of the Object , in which the Axis of Vision is terminated , it so happens that at that time , we can only have a distinct Sensation of that part , and of the rest a confused and indistinct view . V. The other Cause of Distinct Seeing . The other cause of Distinct Vision , depends on the Capillaments of the Optick Nerve ; for seeing that we cannot discern the parts of Bodies we do behold , but only inasmuch as they are distinguisht by Colour , and that the distinct perception of these Bodies , doth not only depend upon this , that all the Rays which proceed from the several points of Bodies , do in the bottom of the Eye meet in about so many other points ; but is also caused by the multitude of the Filaments of the Optick Nerve , the Extremities or Ends whereof are contained in that space , which the Image at the bottom of the Eye doth take up ; it follows that there must be so many ends of these Capillaments , as there are sensible parts in the Object , that reflect their Rays . For if the Rays proceeding from 2 different parts of the Object , should meet in 2 divers points of the same Filament separately , it would be the same as if they met in the same Point , because they could not move that one Filament after 2 several manners . Whence it is that Fields , in the Summer-time , abounding with Red or Yellow Flowers that grow amongst the Grass , do seem to be wholly Red or Yellow ; because both the Grass and Flowers acting together upon one and the fame Capillament , the Flowers which are of a more lively Colour , do only appear to the Eye , because that Filament , at that time only follows the motion , which the Flowers imprest upon it . VI. How the Situation of the Object comes to be discerned . The situation of Bodies is not perceived by any Representation or other Action , proceeding from them , but only by the Impulse , coming from a certain Region or quarter , to some particular part of the Brain . For the Object seems to be situate in that part , from whence the Rays come that affect the Eye . Thus we suppose the Candle AC , to be placed in such a quarter , because the Eye BDE , doth from thence receive the Rays that make an Impression upon it , which Impression gives occasion to the Soul to judge that the Candle AC , takes up such a situation amongst other Bodies . For the knowledge of the situation of any thing depends only on the situation of the particles of the Brain , from whence the Filaments of the Nerves do arise : But forasmuch as those Filaments are diversly affected by Bodies in different places , because of their various disposition , the Soul by their peculiar motion , discerns their different situations . Thus when we turn our Head or Eye this way or that way , the Soul is put in mind of that thing , by the Change which the Nerves inserted in the Muscles subservient to that Motion , do effect in our Brain . For when the Eye BDE sees the Candle AC , the Soul may know the situation of the said Candle , because the Nerves of the Eye partake of another disposition , than if it lookt another way . VII . Why the Image of an Object is turn'd upside down in the Eye . Nevertheless it is to observed , that tho' Objects be perceived in their natural situation ; yet their Images are turned upside down in the Eye . The reason whereof is , because but one of those Rays that enter the Eye being Perpendicular , and Direct , and the rest , because of the straitness of the Apple of the Eye entring obliquely , it happens that the Oblique Ray AB , proceeding from the upper part of the Candle , and the Ray , CD , flowing from its lower , do intercept one another , so that the lower part C , of the Candle , is represented at the bottom of the Eye upwards about D , and the upper part A , of the Candle appears about B , by which means the Candle is delineated in the Eye inverted . This any one can make an Experiment of , by taking the Eye of an Animal , devested of all its Membrans and Muscles besides the Retina ; for supposing that this Eye be placed before the little hole of a Darkened Room , and the Candle AC , be set opposit to it , if then standing in the Room we look into the bottom of the Eye , we shall see the Image turn'd upside down . VIII . Things at a great distance appear higher This inversion of the Image in the Eye , is th● cause why things appear by so much higher as they are farther from us ; because Rays that proceed from things near to us , do reach the upper parts of the Eye or Retina ; whereas those that flow from Objects far distant , do come to the lower part of the Eye : And consequently it is necessary , that the former should appear Higher , and these latter Lower . IX . How the Distance of things is perceived . The Distance of Objects is discerned by the various motions that change the Figure of the Eye : For when we behold things at a Distance , the Apple of the Eye becomes more dilated , and the Crystalline Humour is somewhat withdrawn towards the Retina , and by this means the Figure of the Eye becomes more Round : whereas , when we view Objects that are near to us , the opening of the Apple of the Eye is lessened , and the Crystalline Humour contracted , and thrust outwards , by which means the Eye becomes more extended in length . And whilst we thus change the Figure of our Eye , according to the various situation of the Object , an alteration consequently happens in the parts of the Brain , Nature having so ordered it , that the Soul thereby might be informed of the distance of the Object . X. Other ways of discerning the Distance of Objects . The Distance also of Objects may be discerned by the distinct or confused Representation of them , and so likewise by the strength or weakness of the Light. Thus when we know the Bulk of a Body beforehand , its distinct Figure , and the Liveliness of its Colour , this knowledge will help us to know the distance of it . The Interposition also of many Bodies between us , and those Bodies which we behold , conduceth not a little to the perceiving of their Distance ; because the distance we imagin there is between them , serves us for a measure whereby to take the distance of the Objects we are viewing . Thus when the Moon is very high raised above the surface of the Earth , it seems nearer to us when no visible Bodies interpose between us and it , than when many Terrestrial Bodies intervene . The strength also and weakness of the Light are of use to inform us of the Distance of Objects : For Bodies illustrated with a weak Light , are apprehended to be at a greater distance , and those things to be nearer to us which are seen distinctly , and under a strong and vigorous collustration . And therefore it is that towards Night , or in misty Weather , things that are near appear as if they were at a distance from us . XI . How the Bulk of the Object is perceived . By perceiving the Situation and Distance of every Object , we are informed of the Bulk and Bigness of it : Thus when the Rays from A and C , are decussated , or intersect one another at the Apple of the Eye E , the Objects Angle of Vision being known , the Soul by this Impression , being informed of the length of these Rays , easily discerns the Quantity of the line AC , which is the Magnitude of the thing . So that if ever the Mind mistake in judging of the Bulk of any thing , it is only because it hath not rightly perceived the distance of it . As it happens to a person , who not being able to conceive the great distance there is between the Sun and the Earth , will never know the true Magnitude of the Sun. And this is the Reason why the Sun and Moon , when they are nearest to the Horizon , appear bigger than when they are farther from it ; which doth not happen because they sometime appear under a greater , and at other time under a less Angle , but because they are judged to be at a greater distance . For our Modern Astronomers , who have measur'd the Angle under which the Sun or Moon appear at their Rising and Setting , find it to be the same with that under which it appears about the Meridian . XII . How the Figure of Objects is perceived . We judge of the figure of any Object , from the knowledge or opinion we have of the situation of the different Parts of it , and not at all from the likeness of the Images , that are delineated in the Eye ; forasmuch as those Images are often Elliptical , and of an oblong Square , which represent to us Objects that are perfectly Round and Equilateral Squares . Thus Square Objects , that are at a great distance from us appear Round , because the great distance of the Angles obliterates the Jettings-out and Unevenness of the Object . In like manner , Round or Concave Bodies appear with flat and even Surfaces , because the rising or depression of any of the Parts , by reason of the great distance , escapes the Eye . Thus he who beholds the Sun , doth not discern it to be round , but flat , tho' indeed the middle parts thereof be nearer to our Eyes , than those that are towards the Edges : but so vast is the distance between the Sun and our Eye , that the foresaid proximity of the middle Parts , is not at all considerable or perceptible . XIII . How the Motion or Rest of Bodies is perceived . Lastly , Motion is perceived when the Images of Objects imprest on the Eye , do run through several Spaces in the Retina , and successively answer to other Images of Objects , which we look upon as immoveable . Or when the Eye is fain to turn it self , that it may continue to have the Sight of the Object . So likewise the Rest of Visible things is perceived , when the Eye continuing without Motion , the Images represented in the Retina are at Rest , and continue to have the same Respect to another Object , which is consider'd as without motion . XIV . There must be a due Distance betwixt the Object and the Eye . Moreover it is to be observed , that in order to the due and right seeing of any Object , there is required a due distance , to the end that the many Rays that proceed from the several Points of the Object , may meet together in every least part of the Retina . As likewise , that the Image of the Object , may be represented in the bottom of the Eye sufficiently great and perceptible . Otherwise if the Object , for Example D , be too near , the Rays that proceed from it , as ABC , will enter so obliquely into the Convex Surface of the Eye AC , that the Retina E cannot be affected by them , as not being sufficiently gathered together . Wherefore since the meeting of the Rays is only in F , it is no wonder if no perceptible Image of the Object be delineated in the bottom of the Eye . Forasmuch as the Action of Seeing cannot be performed , except the Rays entring the Apple of the Eye , and being refracted at their meeting with the Membrans and Humours , strike upon the Retina , and impress the Image of the Object upon it . XV. The too great distance of the Object produceth only an obscure Vision . But when the Object is at too great a distance , the contrary happens ; for seeing that then only a few Rays proceed from every Point of the Object , and that those that come from them , do too much approach to a Parallelism , it so happens that they are united before they reach the Retina ; and presently after separating themselves again from that Point of their meeting , cannot sufficiently move or agitate the Retina ; whereupon only an obscure Image of the Object is represented . By Example , If the Object A be supposed to be far distant from the Organ , it is evident that only a few Rays will flow from each Point of it ; and that the Rays AB , AC , AD , proceeding from each Point of it , by their inclining too much to a Parallelism , will unite about E , before they come to the Retina F. Whence it will follow , that either a too little Image of the Object will be drawn at the bottom of the Eye , or none at all . XVI . VVhat a Telescope or Prospective-Glass is , and how Objects at a distance are perceived by it . To prevent this defect , a Telescope or Prospective Glass is employ'd ( that is , an Instrument whereby the Visive Faculty is assisted to discern Objects , that are at a great distance distinctly ) which consists of 2 Glasses , viz. a Convex and a Concave : For by the first of these the Rays are so gather'd , that before the union or coition of Cones like to those which are produced by the Eye , the Concave intervenes , which by somewhat dilating of these Cones , doth advance their Points or Cusps , and renders them more distinct ; so that being received into the Apple of the Eye after decussation , they again meet in the Retina , and according to the proportion of the Convexity , represent the thing greater . Wherefore , if such an Instrument be duly applied to the Eye , it makes the Rays that are gather'd about E , and afterwards scatter'd again in the Retina F , become gather'd in it , by means of the convexity of the Eye , and so produce a distinct and exact Vision or Sight . For the Telescope , by reason of its great Pupil , makes the Object to be seen by many Rays , and because of the Convex figure of the outward Glass , which congregates the Rays , it appears under a greater Angle of Vision . This Instrument causeth also a great decussation of the Rays , which enter the Round outward Extremity of the Tube , towards the Retina ; and by this means a great Representation or Image of the Object , is delineated in the Eye , so that things at a distance appear great and distinct . XVII . Of the Deception of the Sight . How liable we are to be deceived by our Sight , as well as by our other Senses , will be evident to us by considering the manner how all our Sensations are formed , and more particularly that of Seeing . For hence it is , that some Objects appear more clearly to us than others ; and that their Place , Situation , Figure , and Colours , are not always distinctly represented ; that their Bulk seems sometimes greater , and at other times less ; yea , and sometimes they are altogether invisible , especially those Parts that make their Essential constitution . In the Bud of a Tulip-Root , with a Microscope , we may easily discover the Leaves , which afterwards turn Green , those which are to compose the Flower it self , and that little Triangular part which contains the Seed , with the 6 little Pillars that surround it , at the bottom of the Tulip . And the same may be said of the Bud of a Mustard-Seed , of the Kernel of an Apple , and generally of all sorts of Trees and Plants : For tho' nothing of all this can be perceived by the Eyes , no not when assisted by a Microscope ; yet we may with confidence conclude that they are all contain'd in the Bud of their Seeds . This may also appear in little Animals , as in the Mites that breed in rotten Cheese , and those little Worms that gnaw the Skin , and cause the hands to itch , which have all of them Organical Bodies , as well as any other Animals . And as we see in the Bud of a Root of the Tulip , the whole Flower , so likewise we may perceive in the Treadle of an Egg , which the Hen hath not yet sit upon , a Pullet , which it may be is wholly formed . So likewise Frogs may be perceiv'd in the Spawn of Frogs . To which add what Malbranche asserts , that probably there are infinite Trees in one only Bud , and that all the Plants , and all the Bodies of Man and Animals that shall ever be , have been produc'd from the beginning of the World. Now it is certain , that all these things cannot be perceived by our unassisted Eyes ; yea , and that the greatest part of them cannot be perceived with the help of the most excellent Microscopes : And much less by our other Senses , which the Sight excells in order , dignity and extent . Neither must this seem any whit strange unto us , forasmuch as it is only the Surface of Bodies that affects our Senses , and that it is not their whole Surface neither that is capable of affecting our Senses , but those Parts only of it that are big enough to move the Fibres of the Nerves . And forasmuch as those Parts which make up the Essential Constitution of the Body , are very often too small to move the Fibres of the Nerves , that belong to the Organs of Sensation ; it must follow that they are hid from us , and that the Object which we perceive , may be quite different from what it appears to be . CHAP. XX. Of Waking , Sleep , and Dreams . I. How Sleep is distinguish'd from VVaking . NExt after the Senses , it seems proper to treat of Waking and Sleep , forasmuch as by these their Operations and Cessations are determin'd . For Waking is the free Exercise of the Senses , depending on the uninterrupted influence of the Spirits into the Organs . And therefore those things which increase the Animal Spirits , or do more strongly agitate them , are the Cause of Waking or Watchfulness . Sleep is a Binding of the Senses , proceeding from the want of Spirits . Wherefore those things which diminish the Spirits , or foreslow their motion , provoke Sleep . So that Waking and Sleeping differ no otherwise , than as Loosing and Binding , or as the Flowing or Standing still of the Water that is in a River . For if we give heed to our own Experience , we know nothing else of Waking , save that it is such a state , wherein we hear the Voices of those that speak to us , see visible Objects , are moved by the things that touch us , and are sensible otherways of those thing whereof our Nature is capable . And as to Sleep , we experience it to be a state opposite to this , and wherein we are not excited by the Objects wont to strike our Senses , but our Body rests as depriv'd of all motion . II. Wherein the State of VVaking or VVatchfulness consists . To the end therefore , that we may be able to give an account of both these States , we are to observe , that the state of Waking consists in this , That the Animal Spirits ( which as was said before , are the most lively parts of the Blood ) being in great abundance in the Brain , are easily determin'd by the Glandula Pinealis , to flow into the Nerves , and fill them ▪ so , that all their Capillaments are kept stretched or distended , and separate from one another . For supposing this affluence of the Spirits in the Brain , if any Object acts upon our Body , it may be easily conceived , that the Capillaments of the Nerves , that terminate towards that Part , will convey the motion they have received , to that very part of the Brain , which immediately stirs up the Soul to Sensation . For it cannot be difficult for us to imagine , that the Animal Spirits , which are then determin'd towards certain Muscles , cause those Parts of the Body , in which the Muscles are inserted to be moved . So that Waking or Watchfulness is nothing else , but the Dilatation of the Animal Spirits in the Brain , and throughout all the Nerves , whereby the Organs of the Senses are at full liberty to transmit the motions of the Objects to the Common Sense , placed in the midst of the Brain . III. The Causes of VVaking or VVatching . Watching may be effected by many Causes . First , By those things which thin the Blood , or which over-heat it , and by agitating it too much , increase the Animal Spirits . Secondly , By things which open the Plexus Choroides of the Arteries , and so make way for the Spirits to enter into the Nerves . Thirdly , By things that stir and agitate the Body over-much , and by making the motion of the Blood more swift , occasion a greater Briskness and Liveliness in the Body . Fourthly , By Moderate Sleep or Rest , which recruit the strength of the Body , and make it with more agility and chearfulness to perform its Task . IV. VVherein the State of Sleep consists . Sleep being the State that is opposite to Watching , and wherein the outward Senses are bound up , and cease from their Functions , we shall easily understand how it is effected , by assigning a different disposition to the Brain , from that which Watching doth produce . Forasmuch therefore as the State of Waking doth consist in the great abundance of the Animal Spirits , which replenish the Ventricles of the Brain , and the Pores of the Nerves : Sleep on the contrary must consist in a deficiency and want of the said Spirits , which causeth the Pores , through which the Animal Spirits are wont to flow into the Nerves , to grow limber and cling together , and being no longer distended by the copious afflux of the Spirits , to be shut up . For where this Obstruction happens , the Animal Spirits , which before were contained in the Nerves , are dissipated ; and there being no other in a readiness to supply their places , the Filaments of the Nerves cling together : So that if in this State an Object should act upon any part of our Body , yet can it not transmit that Impression to the Brain , and consequently no Sensation can result from thence . Besides , the Muscles being then empty and void of Spirits , become limber and flagging , and so cannot be of any use for the motion of the Members to which they belong , nor keep the Body in an upright posture , any more than if they were quite vanish'd . And accordingly in Sleep , the Body lies along , the Eye-brows fall , the Head nods , the Knees fail , and and all the Senses cease from their Actions . And therefore Sleep is nothing else , but a relaxation of the Ventricles of the Brain , and a flagging of the Nerves , proceeding from the want of Animal Spirits , whereby the Organs of Sense are at a stand , and unfit to convey the motions of the Objects to the Brain , and to the Common Sense . V. The Opinion of the Peripateticks concerning Sleep . But whence this Effect doth proceed , and what that Band is , whereby the Actions , as well of the Inward as Outward Senses , are supprest and bound up , is not so easie to determine . 'T is a common Opinion amongst Philosophers , especially those that follow Aristotle , That Sleep is caused by the Vapours proceeding from the Chyle and other Humours working in the Stomach ; which being afterwards condensed , cloud the Brain , and cause Drowziness and Dulness . VI. This Opinion rejected by those that hold the Circulation of the Blood. But this Opinion is not approv'd of by them , who hold the Circulation of Blood. For these cannot discover , by what ways these Vapours elevated from the Stomach , should through so many of the Inward parts and Bony prisons , as through so many Obstacles , be carried up to the Brain ; forasmuch as their Opinion is , that the most part of those Humours that moisten the Brain , is transmitted through the Arteries , and immediately communicated to it from the Mass of Blood. Besides , if Sleep be owing to the Vapours that arise from the Stomach , why is it not always consequent to the taking in of Food ; and why is not Watching always the Effect of our abstaining from Meat ? When yet we frequently experience the contrary , that many times with an Empty Stomach we fall into a Deep Sleep ; and when we have eaten freely are inclin'd to be watchful . Moreover , Children are apt to fall asleep , by Weariness , Singing , Darkness , and the Rocking in a Cradle ; and yet none of these contain any thing of these Vapours , that are suppos'd so necessary for the causing of Sleep . To which may be added , that if a Ligature be put upon the Inward Jugular Arteries or Veins of any person , he will presently fall asleep ; which is the Reason that those who are hanged , seem to themselves , as it were , to fall asleep , as soon as they are turn'd off . VII . The true Cause of Sleep . Wherefore the Cause of Sleep is not to be attributed , to the Fumes and Vapours that arise from the Stomach ; but rather to the deficiency of the Animal Spirits , or the diminution of their motion . For Opium , Poppy , Mandrakes , and other such like Sleep ▪ provoking ▪ Medicaments , do not praduce their Effects by raising copious Exhalations from the Chyle to the Brain ; but because they hinder the motion of the Spirits that way , and by their Fuliginous Humour stop the Spirits that are contained in the Brain , from being conveyed to the outward Membrans . And accordingly gross Meats , and hard of Digestion , which oppress the Stomach , commonly cause Sleep and Drowziness ; because they do fix and dull the Spirits contained in the Stomach , and by the consent and correspondence there is between that part and the Brain , make the Spirits there more dull and heavy . VIII . During Sleep , our Blood is hotter than when we are awake . But yet forasmuch as the Spirits can never be without a considerable degree of Agitation , and can never be so far dulled , as to be destitute of all motion , it must follow that not being now employ'd to keep the Body awake , they must needs increase the motion of the Blood wherewith they are mingled ; and therefore we find , that the Body is much hotter whilst asleep , than when awake : For we find , that in the Coldest Weather in the Winter , our Bodies are very hot when asleep , but are no sooner awake , but we need Fire , or some strong and violent Exercise to preserve us from being sensible of extream Cold , and the rigour of the Weather . IX . How Sleep comes to cease . Sleep is discust either by force , or of it self : The former way is , when the Organ of any of the Senses is so struck , that the imprest motion arrives at the Brain ; because by this means the Spirits that are in the Brain may be so agitated , that joyning themselves with others that are carried that way , they may produce Waking . And Sleep ends of it self , when the Animal Spirits , which the Blood doth produce whilst we are asleep , are in such abundance conveyed to the Brain , that opening the Passages of the Nerves , and rushing into them , they distend the Filaments thereof , and by this means give the Soul occasion to perceive the several Objects that touch and affect the Body . X. VVhat a Dream is , and what the Cause of it . The Imaginations of those who are asleep , are called Dreams , when the Soul , while the Body is asleep , apprehends things , and discourseth of them , as if it were awake . Now this happens , when during Sleep the Animal Spirits enter these Footsteps , that were before imprest on the Brain , moving some Parts thereof in the same manner , as they are wont to be moved by the presence of an Object , acting upon the Organ of the Senses . XI . How Dreams are produc'd . For notwithstanding that in Sleep , the greatest part of the Pores or Passages of the Brain , are stopt up by a thick Vapour , or rather Humour ; and that the Fibres , by reason of this Obstruction , become less active , especially those by which the affection , or imprest motion , is conveyed from the outward Sense to the inward , and from the Plexus Choroides , to the bottom of the Brain , and Original of the Nerves ; yet the rest may notwithstanding this discharge their Function , at least in part ; which is the Cause why Imaginations are easily excited in us whilst we are asleep , by the least motion or impression from the Blood , Gall , or Phlegm , or of those Vapours that are the Cause of the foresaid Obstructions , which make the Fibres so torpid and unactive . And this is the reason why things are but confusedly represented to us , whilst we are asleep . XII . The Cause of the difference of Dreams . The difference and great variety of Dreams , proceeds first from the variety of the Foot-steps of former motions imprest upon the Brain . Thus we find frequently , that the things wherewith we have mostly entertained our Thoughts in the Day-time , are apt to be represented to us in Dreams by Night . Secondly , From the peculiar temperament and complexion of the Body , and the difference of Meat and Drink , whence the Spirits are generated . Thus Persons of a Cholerick Temperament dream of Quarrels , Fightings , Fires , &c. Phlegmatick Persons , of Water-floods , Drowning , &c. Thirdly , From Custom ; which being a kind of second Nature , hath its effect upon us even during Sleep . XIII . Dreams are formed from things that are seen . Forasmuch as the Parts of the Brain , which have been before moved by the outward Action of the Object , are more easily moved than those that have been in continual Rest : Therefore it commonly happens that the Animal Spirits push against them ; so that we seldom dream of any other things , but such as we have perceived by some Sense or other whilst we were awake . And accordingly we find but little difference , between the things we behold waking , and those which appear to us in Dreams ; and that there is much the same succession of our Imaginations in our Dreams , as when we are awake , which tho' they seem sometimes incoherent , yet is there commonly some hidden connexion between them . XIV . How it comes to pass that our Dreams are sometimes strange and irregular . But because the Objects that are represented to us whilst we are awake , are in great number , and may variously affect the same parts of the Brain , it would be strange , if in the interval that is between Sleeping and Waking , the Spirits that are continually ranging through the Pores of the Brain should not promiscuously move some of the parts of it , that is , partly as they were moved at the presence of one Object , and partly as they were at the presence of another : and by this means it may come to pass that the Soul may perceive a monstrous representation , as of a Goat with a Lions Head , or the like ; so that we have no reason to look for any Connexion or Order in our Dreams . CHAP. XXI . Of the Appetite of Hunger and Thirst . I. Why Hunger and Thirst are called Natural Appetites or Desires . SEeing that Hunger and Thirst are perceived after the same manner , as the other Senses , viz. by the Ministry of the Nerves , which like so many fine Threads proceed from the Brain to the Stomach and Gullet ; it seems convenient that having spoken of the Senses , we should now proceed to explain what Hunger and Thirst is . Which 2 affections , are commonly called Natural Appetites , because they suppose a Compound of Soul and Body , and are generally accompanied with a desire to Eat and Drink . II. Aristotle's Opinion concerning Hunger and Thirst . ARISTOTLE defines Hunger to be a desire of that which is hot and dry ; but does not take notice whence this Appetite doth arise , nor how it comes to be stirred up ; nor do I believe that any of his Qualities will be able to explicate the nature thereof . For we find that Infants and other new born Animals desire Milk ; but who will say that the Appetite to Milk is only the desire of that which is dry ? Or shall we say that Animals when they desire Herbs and Fruits , are carried out with an Appetite to that which is Hot and Dry , when a moisture can be separated from them , which far surpasseth their dry substance in quantity ? Again , how can Hunger be said to be the Appetite of that which is hot and Dry , seeing that Herbs and Fruits , according to all that we can perceive by them , have more cold than heat in them ? III. What Hunger is , and how it is caused . Hunger therefore is nothing else but a Sense arising in the Ventricle , from an Acid Juice twitching the Nerves thereof . For as the various motions of the Optick Nerve , makes the Soul to perceive and discern all the varieties of Light and Colours ; so there is nothing that can produce the sense of Hunger , but the motion of some Nerves inserted into the bottom of the Stomach . For the better understanding how this is done , we are to take notice that when the Stomach is empty of Food , the Juice or Liquor which is wont to flow out of the Arteries into the Stomach , and there to mingle with the Food , finding no matter to work upon , twitcheth the Nerves of the Stomach , which motion being conveyed to the Brain , stirs up the Sense of Hunger . IV. No Liquor is conveyed out of the Spleen into the Stomach . Some Physicians are of opinion , that this Liquor is conveyed into the Stomach by Veins from the Spleen : But that they are mistaken herein , is evident by this Experiment , that when a Ligature is made on the Vas Breve , the Vessel that lies between the Spleen and the Stomach , that part of it which is betwixt the Ligature and the Stomach swells , whereas the other part grows flag and empty ; which is a plain evidence that some liquor is conveyed by the said Vessel from the Stomach to the Spleen , and not from the Spleen to the Stomach . Moreover , the Valvulae that are in the Vas Breve venosum , do oppose the transmission of any liquor from the Spleen to the Stomach , because all of them lead towards the Spleen . Whence it is manifest that something is transmitted from the Stomach to the Spleen , but not the contrary way . V. The Nature of the Liquor that flows out of the Arteries . Now this Liquor which causeth the sense of Hunger is sowre and sharp , as being the off-spring of Choler and Melancholy , and which therefore lighting on the bottom of the Stomach , cannot but twitch and prick the membrans whereof it doth consist . Hence it is commonly observed , that Melancholy Persons are great Eaters , because this Juice is more sowre in them , than in others , by which means the Food is soon consumed thereby , as Metals are in Aqua Fortis , and other acid Spirits , and the Guts egg'd on to a ready Evacuation . VI. Why some Persons are very seldom sensible of Hunger . And on the contrary it sometimes happens , that persons who have not eaten of a good while , yet have no sense of Hunger , nor any desire to Eat , as it is frequently so with Phlegmatick Persons . Because this Juice by some obstruction or other is hindred from entring into the Stomach , or because it is too thin and weak , so that the Stomach is not sensible of the weak impression it makes upon it ; or because its force is blunted by some cold and clammy Humour , or because there is but little of this sharp Humour conveyed to the Stomach . For it is always one or other of these causes that occasions the want of Appetite to Food , and more especially in Sick People . VII . Of Persons that are troubled with a Dogs hunger , as 't is called . And on the other hand there are some persons that are troubled with continual Hunger , and who like Dogs are ever Ravenous , and never satisfied ; because so great quantity of this sharp Humour is conveyed to their Stomachs , that all their Food thereby is made sowre , so that their Stomach is continually twitched , and sollicited to desire more Food , the former being readily evacuated downwards , or else cast up by Vomit . And thus it comes to pass , that some of this Humour is sometimes transmitted to the Venae Lacteae , and continually bes●egeth the Stomach . VIII . The Irregular Appetite of Women with Child . But if this sharp Humour , lodging in the bottom of the Stomach , be of such a Temperament , as to have a peculiar force to dissolve some Food sooner than other , then it will be apt to stir up the Appetite of one sort of Meat rather than another . Hence some Women eat Coals , Chalk , Quick-lime and the like . Now the cause of this variety of this sowre Humour may be , because in the first Months of Conception , the Mouth of the Womb being stopt , that the Superfluous Blood cannot be evacuated as formerly , by this means the Humours of the Body are corrupted , and being conveyed to the Stomach , produce an irregular Appetite . And therefore some Physicians are of opinion , that when the Melancholy Humour is deprav'd in Women , they long for Quick-lime , Coals , &c. when sowre Phlegm abounds in them they desire sowre things ; and when Gall predominates , Bacon , Suet and such like . And it is from the same Cause that young Girls that are troubled with the Green-Sickness , as we commonlv call it , do take a liking to strange and unnatural sorts of Food , such as Coals , Chalk , Leather , &c. because their Blood for want of due evacuations grows sharper than ordinary , and consequently the Humour , which is derived out of the Blood into the Stomach , partaking of the same Quality , more violently twitches the Nerves thereof , and that after a peculiar manner , according to the various constitution of the Blood in every Individual . IX . It is not Heat that digests the meat in our Stomach . This discovers to us the mistake of the Peripateticks , who suppose the Stomach to be like a Kitchin , where the Food is concocted and digested by heat only : whereas we find that there is but a moderate heat in the Stomach , and yet that even Bones are consumed and digested in it , as in the Stomach of a Dog , which if they should be boild for some Months together in a Pot with a very strong Fire , would never undergo any such change , as we find they do in the Stomach . Besides , Historians , and particularly P. Bressano in his Relation of New France , tell us of most ravenous and devouring Fishes , which do readily digest the hardest Bodies and turn them into Liquor , whose Stomachs notwithstanding are so cold , that one can scarcely endure to touch them ; which is an incontestable Argument , that the dissolution of Food in the Stomach is not to be attributed to heat , but to the foresaid acid Juice in the Stomach , which dissolves our Food , as some acid Spirits do Metals . X. What Thirst and what Drink is . Thirst is a Desire of Drink , caused by the dryness of the Throat and Gullet , or the Heat of the Stomach , commonly called Heart-burning , or a Salt Savour sticking to the Tongue . By the name of Drink we understand every sort of liquor , that is not Salt , Fat or too bitter , for Salt , Fat and Bitter Liquours do rather inflame the Thirst than allay it . XI . What is the Cause of Thirst . To be informed of the Cause of Thirst , and that Driness which is sometimes in the Mouth , Tongue and Palate , we are to consider that the moisture which continually ascends from the Stomach to the Gullet , in the form of a thick and moist Vapor , for the moistning of those parts , when at any time it is over agitated or heated , it doth so dry the Swallow , and at the same time so affect the Nerves , as to excite in the Soul the Appetite of Thirst . So that there is a greater difference between the Vapor which provokes Thirst , and that Liquor which produceth Hunger , than there is between Sweat , and that which exhales from the whole Body by insensible Transpiration . XII . Thirst is not an appetite of something that is cold . ARISTOTLE was of opinion that Natural Thirst was the Appetite or desire of something that is moist and cold . But this doth not seem probable ; for tho' Thirst seem to be a desire of something that is moist , in order to dissolve , dilute and macerate the Food we have taken , and turn it into Juice ; yet there is no need it should be cold rather than Hot ; forasmuch as any moisture doth extinguish Fire be it hot or cold . But whether it be more conducing to health to use Cold or Hot Drink is not so easily determinable , because of the different Temperaments of Bodies . Only we find by Experience , that the drinking of some extream cold liquor is very hurtful to the Body , whereas it is seldom known that any hurt accrues to us , by the using of hot drink . XIII . Of the Different Causes of Thirst . Thirst is caused several ways , as either presently after we have eaten , because of the driness of our Food , which like a Spung , drinks up the moisture of our Stomach ; or when our Throat is heated by the effusion of Gall , eating of high seasoned Meats , &c. or from some Salt Humour conveyed to that part , whence not only the imagination of drinking is awakened , but also an inordinate desire thereof , by which means some persons long for Vinegar , Urin , Stinking Water , &c. CHAP. XXII . Of the Common Sense , Imagination , and Memory . I. The Soul is not really distinguisht from its Faculties . THE Common Sense , Imagination and Memory , are called the Inferiour Faculties of the Soul , as being attributed to it , because of its intimate union with the Body ; whereas the Understanding and Will are stiled its Superiour Faculties , because they appertain to the Soul , simply considered , and without any respect had to its Relation with the Body . But as these latter are not Beings distinct from the Soul it self , but only Modes of it : So neither are the former any thing else but different modifications thereof , arising from its intimate union with the Body . Thus the Soul , forasmuch as it perceives all the motions imparted to the Brain from the outward Organs of the Senses , is called the Common Sense ; with respect to its long retaining and preserving the same perceptions , it is called Memory ; and forasmuch as it variously compounds and divides the same , it is called Imagination . In like manner , with respect to its desiring or having an aversion by reason of the Objects that are represented by those perceptions , it is called the Sensitive Appetite ; as the Locomotive or moving Faculty is attributed to it forasmuch as it commands the Animal Spirits , and by their means variously moves the Members of the Body according to its pleasure . So that these Faculties are indeed nothing else , but outward modifications , or ways of our considering the Soul , which makes it no more to differ from it self , than Number and Duration makes those things to differ that are numbred or do endure ; and consequently the difference there is betwixt the Soul and its Faculties , is only a Distinction of Reason , that is , a notional distinction . II. What the Common Sense is and how the same it exerted . Seeing therefore that our Bodily Members are devoid of Sense , and that the Soul alone is endued with that Faculty , it remains for us to examin , what inward instrument the Soul makes use of for the perception of things , and how the Species or representations of Objects are conveyed to it . For the motion of the outward Organ , is only performed in the Brain , because there the Soul exerciseth its Functions . Wherefore this Sense is called the Common Sense , because it receives all the Species of the outward Senses , and so reacheth their Objects . For when we represent to our selves any Object , as for Example , a Man , we do not only seem to behold the colour of his Face , and stature of his Body ; but also to smell the Odours he is us'd to have about him , to hear him speak , to taste the Food he eats , and to feel the Softness or Roughness of the Cloaths he wears . For from what hath been said already , it cannot be question'd , but that the Brain is the Organ of the inward Sense , forasmuch as the Nerves proceed from it , as Threads from a Distaff , whereby the motions of the outward Senses are transmitted . III. The Glandula Pinealis , or Pine-Apple-like Kernel , is the Seat of the Inward Sense . Yet is not the whole Brain the Seat of this Inward Sense , but only some part of it ; for otherwise the Optick Nerves , and the Pith of the Back-bone , as being of the same Substance with the Brain , would be the Residence of the Inward Sense . Now this peculiar place of the Souls Residence , is the Conarion , or Glandula Pinealis , a certain Kernel , resembling a Pine-Apple , placed in the midst of the Ventricles of the Brain , and surrounded with the Arteries of the Plexus Choroides . The Reason why we take this Kernel to be the peculiar Seat of the Soul is , because this part of the Brain is single , and one only . For whereas all the Organs of the Senses are double ; there can be no Reason given , why we should not perceive two Objects instead of one ; but only because both these Impressions are transmitted to a certain part of the Brain , which is single and one only , wherein both are conjoyn'd . Furthermore , it is also requisite that that part should be moveable , to the end that the Soul by agitating of it immediately , might be able to send the Animal Spirits into some certain Muscles , rather than into others . And forasmuch as this Kernel is only supported by very small Arteries that encompass it , it is certain that the least thing will be sufficient to put it into motion . And therefore we conclude , that this inmost part of the Brain is the Seat of the Soul , in which it exerts its operations of Understanding and Willing of whatsoever proceeds from the Body , or tends towards it . IV. What the Common Sense is . Accordingly the Common Sense may be described to be an Internal Sense , whereby all the Objects of the External Senses are perceived and united in the midst of the Brain , as the common Center of all Impressions . Or the Common Sense is nothing else , but the concurrence of all motions made by the Objects upon the Nerves , in the Conarion , happening at the same time that the Objects move the Senses . V. The Littleness of this Kernel is no hindrance to its being the Instrument of the Common Sense . Neither doth the Smalness of this Kernel hinder its being the Instrument of the Common Sense ; but on the contrary , those Persons are the most stupid in whom this Kernel , because of its bigness , is not so readily moved ; and those the most witty and apprehensive in whom this Kernel is less , because it is so much the more easily moved : And tho' it were much less than it is , yet would it be big enough with respect to the several Points of the Ventricles , and to the Pipes of the Nerves . VI. What Species and Phantasms are . The Foot-steps of absent Objects , which are laid up in that simple and pliable Substance , by the assistance of the Nerves , are called Species and Phantasms , by Philosophers . They preserve the memory of things before perceived by us , and represent them to us , as oft as we think of them . VII . What Imagination is . Phantasie or Imagination , is nothing else ▪ but a certain application of the Knowing Faculty to the Body ( viz. the Brain ) which is intimately present to it . Or it is an Internal Sense , whereby the absent Objects of the External Senses are represented present to the Brain , by reason of the Foot-steps of former Impressions . For the Species of the Imagination make us to conceive the Image of these things as present to the Eye of our Mind . For when we do imagine any Object , the Soul turns it self to the Body , there to behold the Image or Representation which it apprehends , as intimately present to its Thoughts . VIII . The strength of the Imagination . But here ariseth a Difficulty . For if it be so that the Imagination be performed in the Brain , how comes it to act upon distant Bodies ? as it happens in some White-Women that bring forth Blacks , and Blacks that bring forth White Children ? And in those spots or marks which Longing-Women impress upon their Children ; or that an Adulterous Woman brings forth Children , that are like her absent Husband ? This Difficulty will be easily resolved , if we suppose that the Imagination hath not only a great force over the Brain , but also over the whole Body ; for seeing that the Nerves , as so many Strings , are extended throughout the whole Body , they readily convey the Animal Spirits from the Brain to the Muscles , together with the Affection imprest on the Brain . And by the same means the Imagination moves the Humours of the Body , and by this differerent agitation of the Humours , the Blood becomes alter'd , and consequently the Skin and colour of the Hairs also become changed . Yea , without this change or alteration of the Blood , some Impression may be conveyed through the Arteries of the Woman that is with Child , to some certain part of the Birth in the Womb , and leave a Mark there . See my Natural History , concerning Man , Chap. VI. IX . Wherein the Nature of the Memory doth consist . Memory is that Faculty of the Soul , which repeats things perceived by former Sensations ; or it is the calling to mind of known and past things . And differs from the Imagination only in this , that from the Foot-steps of former Impressions on the Brain , it doth represent as present to it self , Objects that were formerly offer'd to it : Whereas Memory consists in this , that the Pores of the Brain , through which the Spirits , determin'd by the Pine-Apple-like Kernel , have passed , are thereby become dilated , and consequently more fit to admit the same Spirits , repassing that way another time . X. Memory is either Intellectual or Animal ▪ And accordingly Memory is twofold , viz. Intellectual and Animal . Intellectual is that which belongs to Angels and Souls , by means whereof they can represent to themselves , the Thoughts they formerly have had concerning Spiritual things ; and this kind of Memory doth not stand in need of any Bodily assistance . The Animal Memory is that which is common to us with Brutes , and is performed by means of the Brain , and the Foot-steps imprest upon it . For Sensual or Corporeal Memory imports nothing else , but a certain facility remaining in the Pores of the Ventricles of the Brain , to open themselves again , by reason of their having been before opened by the Animal Spirits . Or , to speak more clearly , the Foot-steps of the Animal Memory are those , which the passage of the Animal Spirits hath left betwixt the Fibres of the Brain , through which they have passed before , so as to go out by the said Pores again , as they at first enter'd in by them ; by which means it comes to pass , that these Spirits do more easily enter these Pores , than others ; as Paper that hath been once folded , is more apt to run into the same Folds that hath been formerly made in it . XI . How the Foot-steps of Memory are formed in the Brain . To understand how this is done , we are to imagine , that after that the Spirits that go forth from the Glandula Pinealis H , have left some impression of a Species , or some particular Foot-steps of their passage , they do pass from thence through the Points 2 , 4 , 6 , 8 , and into the like Pores and Intervals as are found betwixt the Filaments , whereof the portion of the Brain EE doth consist . Which Spirits have the power of dilating the said Intervals in some sort ; as likewise of folding and diversly disposing of the Filaments , against which they push in their passage , according to their different motions , and the various openings of the Pipes through which they pass ; that there also they may impress Figures like to those of the Objects . XII . How they are transmitted to the Brain . We are to conceive therefore , that the Figure imprest by the Object AB , CD , upon the Fibres of the Optick Nerve , which it moves or agitates in the Surface of the Retina 1 , 3 , 5 , 7 , must delineate another Figure like it self , in the inward Surface of the Ventricles of the Brain 2 , 4 , 6 , 8 , where the said Fibres are terminated : Whence it comes to pass , that the Animal Spirits , which reside in the Kernel H , must more swiftly pass out of the Pores , that answer to them , than they did before ; and that too in the same form or figure of the opening . And thus their Course produceth another like to it upon the Glandula H , which is that Form to which the Thoughts of the Soul , which depend on the Body , are immediately linked . XIII . How these Foot-steps of the Memory are produced . But yet the Spirits , which make their way through the Passage 2 , 4 , 6 , 8 , though they may be of some force to dilate the passages of the Fibres a little ; yet they have not power enough at the first stroak , to impress their figures upon the Fibres , which are in the Substance of the Brain , with so much facility or perfection , but by degrees perform the same more acurately , according as the Action of the Spirits is either stronger , more lasting , or more frequently repeated . Whence it follows also , that these Figures are not so easily obliterated , but do abide there : So that by means of them , Species , that at any other time have been imprest upon this Kernel , may a long while after be again represented or formed there , even tho' the Objects be absent . And tho' these Passages should afterwards chance to be shut up again , yet they still retain a greater facility or readiness to be open'd , than other Neighbouring passages that were never yet opened . As if many Needles should pierce the stretched piece of Linnen A , the Holes which the said Needles had made in it , would remain open , even after that the Needles be taken away : Or , if they should be closed , yet there would some signs thereof remain in the Cloth , which might very easily be opened again . And it is to be noted , that if only some of these Holes should be open'd again : As for Example a , and b , this would be sufficient to make others of them , such as c , and d , to be dilated again at the same moment of time ; especially if all the foresaid Holes had been often open'd , and that all of them had been usually opened together . Yea , there is a greater facility or readiness in the Pores of the inward Substance of the Ventricles of the Brain , of opening themselves upon the like Action , than there can be in the Linnen Cloth ; for that whilst the Spirits do again open some of those Passages , the said Spirits , because they are diffused every way , do in some sort follow the same Track ( in the same manner as we see that the Sound or Wind follows the motion of Running-Waters ) and by this means do open the Passages again that are about them , because of the easiness they find to enter in by them . XIV . How we can remember two Objects at one and the same time . Moreover , we are to take notice , that in case only some Passages were opened , after the same manner others would also be opened at the same time ; especially if they had been frequently opened before , and all of them together . Thus when 2 Objects have delineated their Species , and that the 2 Ranges of the Spirits , that have framed them , be somewhere joyned in the Substance of the Brain , it is sufficent if one of them only be brought to the Pine-Apple-like Kernel , for the stirring up again of the said Actions , which had their rise from them both . As when we have seen the Nose and Eyes of any Face , we readily apprehend the Mouth , Forehead , and other parts of it , and imagine them as present to us , because we are never us'd to see any of these Parts by it self , but all of them together . XV. What ought to be the Temperament of the Instrument of Memory . From what hath been said , we may easily apprehend , that the Brain ought not to be over moist or soft , that it may the better retain the Species imprest upon it . Thus we see that New born Children , whose Brain is in a manner altogether watry , cannot retain any impression that is made upon it ; and for the same Reason it is , that tho' Children afterwards do with ease enough learn things by Heart , yet they as easily forget them again . Whereas on the contrary , those who have harder and drier Brains , do long retain the Marks once imprest upon them , but cannot without difficulty receive any new Impressions . Hence it is that very Old Men , because of the Driness of their Brain , become wholly deprived of their Memory , neither can retain ought of those things that are committed to them ; and yet are very retentive of those things they have long since committed to their Memories ; because their Brain being grown hard , doth more firmly preserve the Impressions made there . CHAP. XXIII . Of Health and Sickness . I. What Health is . HEalth is nothing else , but that State of an Animal , wherein all its Powers can discharge their Functions , as they ought . Or , it is a certain disposition of Body , and Harmony of its parts , whereby it s fitted forth , exerting and performing of all Actions , according to the Laws of Nature . For as Harmony in Musick consists in an agreeable concent of Sounds , whilst every one observes such a degree of Depth and Heighth , that it doth not go beyond , or fall short of a due proportion : So we call that a State of Health , when every Humour and Quality observes that exact degree of Intention and Remission that they never exceed in , or fall short of a congruous proportion . Hence GALEN in his first Book of the preservation of Health , defines Health to be such a constitution of Body , in which we are neither sensible of any Pain , neither are we hindred in any of the functions of Life : And that therefore those Men are to be accounted Healthful , who without any pain or impediment can perform all the necessary functions of Life . II. Two things are requisit to health There are 2 things more especially that concur to the constituting of Health , viz. a due Temperament of the Humours , and composition of the parts . By the name of Temperament we understand a certain mixture or Union , according to which the Natural Functions are well and duly performed . And consequently the distemperature of the Humours , as the Excess of Choler , Phlegm or Melancholy do spoil Health , and hinder the use of our Natural Faculties . A congruous constitution or composition of the Parts , consists in a due Number , Magnitude , Situation , Figure and Connexion of the several Parts and Organs , and such a disposition of the Fibres , as the Natural Faculties stand in need of to discharge their several Functions . III. There is a Two-fold Health according to Physicians . Physicians commonly distinguish Health into that which is Best and Absolute , which consists in a manner in an indivisible point , from which , if there be never so small a varying or deviation , the same is esteemed to be a Sickness or Disease ; and the Other which is also perfect , tho' probably it may admit of some excess or defect , but not so great , as that it can be accounted for a Sickness , tho' it may cause some little hinderance in the natural functions , or cause some inconsiderable Pain . The former of these States of Health is not to be found in Nature , and can only be conceived in our Minds : Tho' , as GALEN saith , it may serve for a Rule , by which we may measure or compute the greater or less degrees of Health . The Latter is attributed to every Man , and is not found in a lower degree except it be accidentally . For Nature always affects that which is best ; and if at any time it cannot effect what it intends , yet it always performs the best it can . IV. What things conduce to the preservation of Health Many things are conducive to the preserving of the Health . First the AIR , which being taken in by the Mouth and Nostrils , enters the Body , and is necessary to rid the Blood of fuliginous steams by means of the Lungs ; which should it not be continually done , as well the Branches of the Venal Artery as of the Arterial Vein would be obstructed , and not only Health , but also our Life would be in danger . Secondly , Care is to be taken about our FOOD ; for seeing that we stand in need of Food to repair and restore the Consumption made by our Inward Heat , we are to mind that it be taken in such Quantity , Manner , Time and Place as may be most conducive to the Health of our Bodies . For neither must it be taken in so small a Quantity , as to famish or weaken our Bodies ; nor so copiously , as thereby to overcharge our Stomachs ; nor so frequently as to disturb the Digestion of the Food we have last taken ; nor so seldom as to defraud our Stomachs of their due allowance . Thirdly , The Retention and Voiding , or Excretion of our ALIMENTS ; for seeing that the purest and best of the Food must be changed into the Substance of the Body that is fed , it is of absolute necessity that it be retained in the Body : And since it cannot be so pure , but that it must contain some Heterogeneous Parts , the same must be voided , lest by overlong stay in the Body it should putrifie , and disturb the Oeconomy thereof . Fourthly , Moderate EXERCISE ; for motion is a great help to excite Heat , and to open those obstructions , which hinder corporal Functions . But yet on the other hand , overviolent and unseasonable Exercise , wastes the Body , and by disturbing the inward Oeconomy , frequently is the cause of Diseases . Fifthly , REST ; for seeing that as long as we are awake , the Spirits continually course it through the Organs of our Body , this causeth Weariness , which must be restored by Rest and Sleep . Wherefore whenever we watch too long , our Spirits become dissipated , the strength of our Body weakned , our concoction is hindred , and our whole Body , and more especially our Brain , is thereby dried . Sixthly , moderate PASSIONS and AFFECTIONS , especially those of Joy and Cheerfulness , which promote and help the motion of our Spirits , and cherish and recreate all congruous functions . But of all things , nothing is more conducive to Health , than for every Man to take heed to himself , and carefully examin what he finds Good or Hurtful to him , endeavouring always to avoid the one , and procure the other , and to use it in due time and manner . And accordingly CICERO tells us in the 4 th . Book of his Offices , Health is maintained by the knowledge of ones own Body , and by making observation of those things , which are wont to be Good or Hurtful for us , as also by continual Temperance and Continence throughout the whole course of our Lives , together with the care to keep our Bodies neat and cleanly . V. What Sickness is , and that it only resides in the Body SICKNESS on the contrary is such a state of the parts of our Body , whereby they are hindred from the due performance of their Functions . And therefore whatsoever overthrows the Temperament of the foresaid Humours , or the composition of the Parts , is called Sickness . Tho' Sickness doth attack the whole Man , yet doth it only consist in the Body ; because those Distempers which seem to affect the Soul , are only some consequences of Bodily Sickness ; as appears manifestly in that as soon as the Body is cured , the griefs and uneasiness that were found in the Soul do immediately cease , and no longer afflict it . VI. Of the two General Heads of Sickness . Sickness is commonly divided into two General Heads , viz. into Sickness of the Similar and Dissimilar Parts . Sickness of the Similar Parts , is called a Distemper , when it is such as that it sensibly hurts our bodily Actions , as when any Quality , by Example , that of Heat or Cold doth exceed . And this Distemperature is either Manifest or Hidden . Manifest is that wherein the Qualities that exceed are known . Hidden , when by reason of the ignorance of the exorbitant Qualities , the cause of the Distemperature cannot be found out . VII . Diseases of the Dissimular or Organical Parts . The other kind or General Head of Diseases is of the Organical Parts , which are said to be vicious or faulty , with respect to their Conformation ; or with respect to their Magnitude , when they are either greater or less than they ought to be ; or with regard to their Number , when therein they exceed , or are defective ; or as to their situation , when they are not rightly placed ; or as to their Figure , when it is not such as it ought to be ; or with respect to their Connexion , when they are at too great distance from each other , or if they be overmuch crowded together , stretched , comprest , loosened , or grown too stiff . VIII . Some Diseases afflict only some parts , others the whole Body . There is also another Division of Diseases into Universal and Particular : Univeral Diseases are such as afflict the whole Body , as Agues and Fevers . Others Particular , which only affect one part of the Body , as the Brain , Lungs , Throat . But to theend that we may be able to understand the chief Diseases of the Body ; we shall consider them in the following Order . IX . Pain of the Head , or Headach . The First Disease , and which hath its seat in the Membrans of the Head , is the HEADACH , which is a Pain , or troublesom Sensation of the Head , proceeding from the Exorbitant Figures of the Blood , which spoil the Temperament thereof . For when the Animal Spirits , being too violently agitated by reason of a too Cholerick and Glewy Arterial Dew , are driven through the Arteries , to the Head , and the Filaments and Membrans of the Brain , they forthwith disorderly twitch , corrode , prick and cut the same , and finding the pores through which they would make their way , not corresponding with them in Greatness and Figure , they by their force slit them up , and thereby produce an exquisit pain in the Head. Hence in the cure of this Disease there is made use of Blood ▪ letting , and other things conducing to the changing of the Distemper of the Blood , and to drive away the sharp particles , which are got into the most sensible Membrans of the Brain . Purging Medicines are also used , whereof some are more proper to expel these , and others , other particles ; such as are Aqucous and Oleous Medicaments , which also stop the too swift motion of the Animal Spirits in the Blood. X. Phrensie . PHRENSY or Raving is a violent agitation of the Brain and Membrans thereof , caused by the excessive heat of the Blood , and its being filled with sharp and other malignant particles , which entring the Pores and Membrans of the Brain , do frequently cause an Inflammation there . Which then happens when Triangular Particles light upon Round Pores , whereupon in every such Pore , there are left three little spaces , because of the threefold surface , for the filling up of which spaces , the subtil matter presseth in with more abundance , by the rushing in whereof the Parts and Humours become agitated and disturbed . Whereupon the Glandula Pinealis is no longer in a condition to discharge its function , because these Animal Spirits are no longer subject to any Rule , but as Refractory Souldiers and Deserters , cast off the Yoke , and course it up and down without Rule or Discipline . Wherefore Opiates are commended for the cure of this Disease , which both reduce the Raging Spirits to rest and composure , by closing up the Nerves , as it were , with Bird-lime , and stop the irregular motion of the sharp particles , which before did cut the Fibres , and little Branches of the Nerves , that those Fibres , which before were stretched out like Cords , do run together into twisted Knots and Bunches , which Knots stop the passage of the Spirits through the Nerves , and so hinders them from being transmitted to all the parts of the Body , and consequently from discharging the wonted functions . Refrigerating or Cooling Medicaments are likewise of use in this distemper ; as for Example , the Chymical Preparation called Nitrum Perlatum , which being dissolved in Water , is found to be of very good use in this case , because it fixeth the Spirits and the Blood , and at the same time opens Obstructions ; as also Distill'd Vinegar , Antimony Diaphoretick , and Powder of Pearl , Coral , &c. XI . Melancholy . MELANCHOLY which is commonly defined to be a Doating , without a Fever or Raving ; is a Delirium or Doating , proceeding from the sadness of the Patient , whereby the Animal Spirits are moved more slowly than they are wont . This distemper of the Blood , is commonly the product of a vicious Sowre Humour in the Blood , by means whereof the Animal Spirits are darkned and condensed , which roving through the former footsteps left in the Brain , and rebounding from them , represent the same Images to the Soul ; and accordingly Melancholy Persons think the things they have once conceived to be always present with them . Wherefore Alterating Remedies are much used in this Disease , and particularly such as abound with much Volatil Salt , as all Spirituous Matters do , as by Example , the Juice of Betony , Scurvygrass , Brooklime , Chickweed and such like , by means whereof the Ropy and viscous distemperature of the Blood is amended . XII . Madnes● MADNESS is another kind of Doating , accompanied with great Rage and Alienation of Mind , without a Fever , proceeding from the irregular motion of the Animal Spirits being inflamed , and turned into a fiery Nature . For the Spirits being excited by some outward cause , and inflamed , range about through the Brain , but more especially about the Glandula Pinealis , and rushing like Lightning into the Brain and Muscles , do put the Glandula out of the Souls command , which being deluded by these Spirits , and deprived of all her command over the Body , can no longer guide or govern it ; whence proceed so many undecent Gestures , Fightings , Quarrels , Bawlings , &c. In order to the stopping of this Effervescence of the Blood , ponderous Remedies are made use of , as Lapis Prunellae , Saccharum Saturni , or Sugar of Lead , Crabs Eyes , Laudanum Opiatum , Sanguis Draconis , &c. Decoctions also made of some ponderous sorts of Wood , are profitable in this case , as which by their heavy and hard Particles , do stop the motion of the Blood. XIII . Lethargy . LETHARGY is an irresistible inclination to Sleep , accompanied with great forgetfulness , caused by an Obstruction of the Pores of the Brain , by a thick and gross Humour , and the want of Animal Spirits . This Disease is also in a great measure caused by Steams and Vapours that are mingled with a Slimy , Ropy Due , which being condensed into Water overwhelm the Brain , and the Soul together with it . And accordingly this Disease is cured by Volatil and Aromatical Remedies which restore the Spirits , and by their volatility open the Pores , and cut the Viscid or Slimy Matter : Such as are all Spirituous Matters , all Volatil Salts , especially such as are Aromatical and Oleous , also the Wood Guajacum and Sassafras , the Roots of Masterwort , the Herbs , Balm , Betony , Organy , Sage , Marjoram , Thyme , Rosemary , &c. XIV . Coma Vigil , or the Waking Drows●e Disease . COMA VIGIL or the Waking Drowsiness , is a Distemper accompanied with a strong Inclination to Sleep , wherein the Patient lies drowsing with his Eyes shut , without being able to fall asleep . This Disease is caused by too great a dilaration of the Pores of the Brain , from the too much inflamed and agitated Animal Spirits . Wherefore in this Sickness it is necessary to purge the inflamed Choler , which puts the Blood into a violent Fermentation ; and to correct the said Humour by Acids . For the best way to cure this Disease is by such Remedies as do allay and asswage the sharpness of the Humour , and Cordials that restore strength , as also by Sudorificks , which volatilizing those sharp particles , drive them by sweat out of the Body . XV. Catalopsis . CATALEPSIS is a suddain Detention or Immobility of the Body , accompanied with a weakning of the Senses , whereby the Patient retains the same figure of the parts of his Body , which he had in the first moment when he was seized with this Distemper . This Dreadful Disease is not caused by a freezing of the Animal Spirits , and the Humours that are in the Body , or from a Vapour that congeals the Spirits , as the Galanists do suppose , seeing that no such thing can happen to the Spirits , but because the Animal Spirits are no more subject to the command and guidance of the Soul , by reason of the Obstruction of the Glandula Pinealis , and therefore cannot move the parts as they used to do . So that the Cause of this Distemper is no other , but the Obstruction of either side of this Kernel . Wherefore for the taking away of this Obstruction , and to restore the Animal Spirits to their Due and Regular Motion , Volatil Salts are prescribed , and Cephalicks , or Medicaments appropriated to strengthen the Brain , and the Glandula Pinealis in particular , the proper seat of the Soul. Strong Motions and Frictions , or Rubbings of the Body are commended with hot and course Linnen Cloath . XVI . The Vertigo . The VERTIGO is a Sickness wherein all Objects about us seem to turn round , caused by the undue circular motion of the Animal Spirits . Because in this Distemper the Humours and Blood are so tossed and agitated , that by their irregular motion they affect the Roots of the Nerves , and pressing and crowding upon one another , make it appear as if all Visible Bodies turned round . Which crowding and compression proceeds frequently from the Depravation , and sometimes from the Abundance of Blood. And consequently the cure of this Disease is commonly undertaken by Spirituous Medicines that remove Obstructions , by Cephalick and Aromatical Balsams . But if this Disease be caused by an over-great abundance of Blood , then the breathing of a Vein is necessary ; if from some depraved Juice lurking in the Stomach , Vomits are most proper , as also Marmelad of Quinces , Bisket and Crusts of Bread to correct the said vitiated sharp Humours . XVII . The Epilepsy , or Falling Sickness . EPILEPSY or the Falling Sickness , is a convulsive motion of all the Parts of the Body , more especially of the Hands and Feet , accompanied with a deprivation of the Inward and Outward Senses . This Disease proceeds from a Depravation of the Blood , and an Obstruction in the Solid Parts , caused by square figured Particles , which afflict the Nerves with their Angles , which way soever they apply to them ; as also by hooked particles , which being once fastned in the Fibres of the Nerves , cannot so readily be disintangled thence . For the smoothing , and infolding of which particles , the Decoctions of several sorts of Wood , and other Cephalicks are made use of ; whereby the sharpness of the Humours is blunted , and the points of the particles smoothed , as may be seen in a Knife , Sword , Needle , &c. XVIII . Apoplexy . APOPLEXY is a suddain ceasing of all Animal Actions , viz. Sense and Motion , with the Hurt of the Principal Faculties , proceeding from an over-great Dilatation and opening of the Pores of the Brain , and the Plexus Choroides . For by this means is often caused a total Obstruction of the Brain , which is the Beginning or Rise of the Nerves , by a foreign Humour flowing into the Brain , which stops up the way for the Animal Spirits , whereupon all the Members of the Body flag , and become immoveable ; as Sails fall flat , and hang limber , when the Wind fails , that before distended them . According to this notion of this Disease , liberal Blood-letting is very conducive in that Apoplexy , which is caused by too great abundance of Blood ; and a more moderate Blood-letting in that which proceeds from abundance of Phlegm . Rubbing of the parts with Hot Cloaths are also commended , and with Spirituous Liquors ; for by these the Animal Spirits are excited , and the clogging matter that obstructs the Nerves is by this means the better removed . Gentle Glisters are also of good use in the beginning of this Distemper , and afterwards such as are more strong and vehement . XIX . The Palsie . The PALSIE is a Privation of Sense and Motion , either throughout the whole Body , which is less frequent , or in some Members only proceeding from the want or weakness of the Animal Spirits . For where the Spirits are either altogether wanting , or not in sufficient Quantity , the Nerves and Muscles become limber and flaggy , by which means Sense and Motion , either altogether cease , or are remarkably weakned . Wherefore in order to the Cure of this Distemper Physicians take away a little Blood , to free the Passages from Obstructions , and afterwards exhibit Medicaments proper to correct the thickness and clamminess of the Blood , and to make it more thin and fluid ; such as are altering and inciding Cephalicks and Aromaticks appropriated to the Brain and Nerves . This done , the Pores of the Brain , and Pipes of the Nerves may be opened by Sudorificks , especially such as consist of hard and stiff parts ; viz. Sassafras , Guajacum , Sarsaparilla , &c. to the decoctions whereof some Salt of Tartar may be added , for to make the extraction the stronger by opening of the Pores of the said Woods . XX. Convulsion . CONVULSION , commonly call'd the Cramp , is an involuntary , continual and painful Contraction of the Muscles , proceeding from a tough , cold and thick Windy Vapour , puffing up and distending the Parts . To the removing of this Distemper , are made use of all Medicaments that open Obstructions and break Wind , whether inward or outward , Volatile Salts , and all Cephalicks . XXI . The Night-Mare . The NIGHT-MARE , is a great diminution of the Animal motion , and of those parts that are serviceable to the forming of the Voice and Respiration , and more especially the Nerves called Phrenici and Recurrentes , proceeding from the want of the Influx of Spirits , with the false Imagination of an Heavy weight lying upon one , in the appearance of some frightful Spectre . For whenever during Sleep , the Spirits do not flow freely into the Muscles , then such a Motion is produc'd , as whereby the Soul judgeth some great Burthen to lye upon it , which hinders the free motion of the Midriff . Now this sense of being strangled or choak'd is occasien'd , by reason of the Spirits being hindred from their free ingress into the Muscles of the Throat , which thereupon flag and fall down , and so produce this Sense of Strangulation . In this Disease , the use of Volatile Salts is much commended , especially joyned with Spirituous means ; and so likewise Aromaticks , and other Medicaments , proper to incide and attenuate , and consequently to open the Obstructions of the Pores of the Midriff . XXII . A Catarrh , or Rheum . A CATARRH or Rheum is an Effusion of the sharp particles of the Blood , or serous part of it , in every part of the Body , being because of its long stay there coagulated , and producing a pain in the Part either with , or without a swelling . For when the due and regular mixture and consistence of the Blood is spoiled by Serous and Pituitous matter , many sharp particles are cast out into the Glandulous parts , which by their acrimony , and other manifold malignity twitch the Membrans , whereupon follow frequent Sneezing , troublesome Coughing and Hoarsness . In the beginning of this distemper , mild Catharticks are much commended , as Pilulae de Succino and other Aloeticks ; Blisters also , and Issues , and Scarifications are commended in order to the Evacuation of the serous peccant Humour . Moreover all Oleous and Fat things are of good use in this case , because that by the softness of their parts , they do infold and blunt the sharp points of Heterogeneous saline particles in the Blood ; as likewise thick and Earthly Medicaments as Crabs Eyes , Terra Sigillata , common Bole , &c. because these are proper to file and rub off the sharp corners of Salts . XXIII . Cough . Having thus handled the Diseases and Distempers of the Head , we next proceed to consider those of the Breast or Chest , and here we shall in the first place Treat of that Distemper commonly called a Cough , which is a more frequent , uneven and Loud expiration or out-breathing , whereby a great part of Spirits bursting forth violently , endeavour to cast forth some sharp , and troublesome Excrements , caused by the sharp , and pricking particles of the Blood , which by the Circulation of the Humours , are carried into the Muscles design'd for inspiration or expiration , and being there in greater quantity than ordinary , do painfully twitch the Parts , and stir up a Convulsive motion . For the sharp particles like so many Knives or Prickles , being entred into the substance of the Lungs and the Fibres of the Branches of the Windpipe , do necessarily produce a kind of Convulsion , viz. a Cough . Wherefore , in order to the blunting of these sharp pointed Particles sweet things are commended , and Opiats , which do also allay the sharpness of the Humour . Vinegar of Squills is also of good use , especially where the Patient is troubled with tough Phlegm . And for a Purge Mercurius Dulcis is commended , because it doth cut Phlegm and evacuate it . XXIV . The Tissick . ASTHMA , or Tissick , is a difficult and thick fetching of ones Breath , with , or without a Fever , sometimes with great wheezing , and other times without it , proceeding from an ill affection of the substance of the Lungs , and the Intercostat Muscles , serving to Respiration . For whenever the Nerves , that belong to the Intercostal Muscles , and other Organs serving to Respiration , are obstructed , it produceth difficult Breathing . For the removing of which Obstructions , Physicians commend the use of mild Aromaticks , and Volatile , Oleous Salts , which by their Volatility are very proper to pierce the windings of the Lungs , and to open their Obstructions , caused by tough and slimy matter . The fore-mention'd Decoctions of Wood are likewise very useful , as consisting of hard , ponderous and stiff Particles , which by their irregular figure and heaviness drive through the Pores , resolve the viscid or tough matter , and restore the Blood to its due fluidity . XXV . The Pleurisie and Peripneumonia . The PLEURISIE , as also the PERIPNEUMONIA , is an Inflammation , the one of the Pleura , ( that is , the Skin that covers the Ribs ; ) the other of the Lungs , accompanied with the greatest difficulty of Breathing , a high Fever , a continual Cough , sometimes with Frothy Spittle , and frequently also with that which is Bloody , with great Pain , Heaviness and Anxiety about the Breast and Heart , caused by a sharp , distending , pricking and corroding Matter . For this Matter is nothing else in the Pleurisie , but the sharp-pointed and volatile Parts of the Blood , transmitted to the Membrans that cover the Ribs and the intercostal Muscles ; whereas in the Peripneumonia , or Inflammation of the Lungs , they are conveyed into the very Substance of the Lungs , and extravasated thence . Wherefore in either of these Distempers , it is proper to breath a Vein , as well to allay the furious effervescence of the Blood , caused by the foresaid Particles , as to evacuate some part of them . And to alter and correct the sharpness of the Particles of the Blood , testaceous Powders are commended , which do not only imbibe the acidity of the Blood , but also by their ponderosity , serve to dissolve the grumous and coagulated parts thereof . XXVI . The Consumption of the Lungs . PHTHISIS , or the Consumption of the Lungs , is a wasting of the whole Body , with a slow or Hectick Fever , and Cough , with the spitting of Purulent matter , caused by the sharp Particles of the Blood , fretting and corroding the Lungs . For these malignant Particles , whether proceeding from the Arteries , or the Lymphatick Vessels , or from the open'd Imposth●me of a Quinsie or Pleurisie , by effusion of the Purulent matter into the Cavity of the Breast , do there infect and taint the Lungs . And therefore to rid the Lungs of these sharp and corroding Particles of the Purulent matter , Physicians prescribe hard and ponderous Remedies , viz. Testaceous Powders , and the Decoctions of several sorts of Wood , which have a virtue to imbibe and alter the sharpness of the Humour : Mercurius Dulcis , Bole-Armenick , and Terra Sigillata , are also commended in this Distemper . XXVII . Syncope or Swounding . SYNCOPE , or Swounding , is a sudden failing of the strength of the Body , caused by the Extinction for a time , or overwhelming of the vital Flame in the Heart . For the want of a sufficient store of Spirits , with the ceasing of the Circulation of Humours , and of the determination of the Spirits into the Muscles for that time , makes the Body fall down like the Trunk of a Tree . In this Disease are commended Spirituous Medicaments , and Volatile Salts , which are proper to kindle and feed the flame in the Heart ; as all spirituous , cordial , odoriferous Waters , such as Cinamon-water , Aqua-mirabilis , Vita-Matthioli , and the like , which rowze , corroborate and multiply the Spirits . XXVIII . Cardialgia or Pain at the Heart . The Diseases of the Abdomen , or lower Belly , are CARDIALGIA , the Pain at the Heart , which is a painful Sensation at the Mouth of the Stomach , which by means of the Nerves is presented to the Soul. This Pain proceeds from the sharp and pointed Particles , that do prick , twitch and slash the Nerves and their Fibres , and consequently shake them ; which Agitation being convey'd to the Organ of the Common Sense , it is vehemently moved thereby , and so represents to the Soul that afflicting Sensation , which we call Pain . Accordingly for the Cure of this Distemper , are prescribed several Remedies proper in Convulsions , but joyned with Specifick Stomachicks and Opiates , to which are frequently added the Powder of Native Cinnabar , Amber , Man's Skull , &c. XXIX . Singultus or the Hickock . The HICKOCK is a Convulsive motion of the Midriff , caused by touch and irregular Particles , twitching and forcing it to this disordinate motion . For the Fibres of the Nerves of the sixth Conjugation , distributed to the Stomach and the Midriff , are so vellicated in this Distemper , that by their motion communicated to the Brain , they frequently open those Pores there , by which the Animal Spirits , rushing violently towards the Mouth of the Stomach , contract the Fibres appointed for the expulsion of any offending matter , upwards , and make the Patients to explode the Air , contained in the Mouth of the Stomach with that vehemence , as constitutes the Hickock ; which ceaseth as soon as the sharp twtiching matter is discharged by these repeated Convulsion Motions . For the correcting of these peccant particles all hard and ponderous matters , are commended , as Crabs Eyes , Coral , Filings of Steel , Mercurious Dulcis and Opiates . XXX . Diarrhoea a Scouring or Lask . A LASK is the dejection of various and liquid Humours by stool , caused by the effervescence of the Blood , encreased by the cholerick particles thereof , and irritating the Fibres of the Guts by their sharp points . For various Humours being precipitated through the Vessels which open themselves into the Guts , do vellicate their Fibres , and by this means make the Animal Spirits to rush down that way in greater abundance , whereupon a kind of Convulsion follows . In the dry Gripes and the Lienteria , or that Scouring , when the Meat passeth away in the same manner as it was taken in , the ferment of the Stomach is faulty , as not duly digesting the Food put into it . In all Lasks or Scourings , at the beginning Rhubarb , Jalap , and Crabs Eyes are commended , mixed with other proper Medicaments ; and in the Lienteria and dry Gripes , Balsamick Remedies and Stomachicks , are given both inwardly and outwardly . XXXI . Cholera or the Cholerick Passion . The CHOLERICK Passion is a depraved Convulsive motion of the Stomach and Guts , occasioned by sharp and pointed particle ; twitching the Fibres of the Stomach and the Gut called Duodenum , and contracting them upwards . For this twitching of the Fibres cannot continue long , without irritating of the Animal Spirits , and disturbing of them in their several Orders and Stations , and thereby causing them to produce these Convulsive motions . In order to the quelling of this fury of the disturbed Animal Spirits , Bezoardicks are commonly prescribed , and all ponderous Medicines , as Crystal , Terra Sigillata , &c. XXXII . Dysenteri● or the Bloody Flux . The BLOODY FLUX is an Exulceration of the Guts , accompanied with frequent and Bloody Dejections , and violent Pain and Gripings , caused by sharp particles that corrode and cut the small Fibres of the Guts . For the Hooked and Pointed Particles that are mixed with the Humours , do pierce and divide the Membrans of the Guts , and by this means cause an Ulcer therein . In order to the cure of this Disease , altering and Evacuating Medicines are made use of : and above all Rhubarb , because it leaves an adstringent Virtue behind it after Evacuation . Emollient and Lenitive Medicaments are likewise employed for the removing of this Distemper , and such things as promote Fermentation , as Coral , &c. XXXIII . Iliaca Passio or the twisting of the Guts . The TWISTING of the GUTS , is a most exquisit Pain of the small Guts , accompanied with a most obstinate stoppage of the passage downwards , and vomiting of the Excrements , proceeding either from an Inflammation of the Guts , or from their obstruction by some hard Excrements . This Disease is often caused by sharp Humours , sticking within the Membrans of the Guts , which cause the Expulsory motion of the Guts to be turned the contrary way , because of the irritated Animal Spirits , flowing from the Brain into the ascending Fibres of the Guts , which influx being perverted , the Excrements contained in them are voided upwards by the Mouth . In the cure of this dreadful and desperate Disease , Blood letting is made use of , to remove the Inflammation ; and afterwards Emollient and Lenitive Glisters to evacuate and temper the sharp Humours , and to make the passages glib and slippery . For the same purpose Lenitive Catharticks are commended . Crude Mercury is also prescribed mixed with the Yolk of an Egg , that it may not stick to the Guts ; and lastly Narcoticks , which both correct the sharpness of the Humours , and allay the Convulsions of the Guts . XXXIV . The Colick . The COLICK is an afflicting and painful sensation in the Colon , or its neighbouring Parts , caused by a Cholerick Humour joyned with a corroding Salt. For there is a sharp Salt contained , not only within the Hollow of the Guts , but also betwixt the Membrans of them ; which saline particles , when they enter into such Pores , through which they cannot pass , they become , as it were , lock'd up there , that is , in the pores of the Coats or Membrans of the Guts , where they occasion a most acute Pain , by twitching and corroding the Fibres thereof . Wherefore to break the force of this sharp Humour , and to heal the hurt Fibres of the Nerves , several Affwaging and Anodynous Medicaments are prescribed , and sometimes Opiates , to give some respit to the Patient , and that the Physician may gain time to eliminate that foreign and praeternatural Salt. Glysters also are commended , and other outward Applications to comfort the hurt Fibres , and to allay the violent motion of the Animal Spirits . XXXV . The Yellow Jaundise . The YELLOW JAUNDISE is an Ill habit of Body , staining the solid and fluid parts thereof with a yellow or black Colour , caused by the effusion of a sharp and depraved Gall. For the Gall , whenever its Particles are vitiated , either in their figure or motion ; then that part of it which commonly promotes the Voiding of Excrements , is no longer sent that way , but continuing with the Blood , and circulating with it through the Body , stains the Skin with a yellow , and sometimes with a black Colour , that is , when sowr and gross Particles are mixed with those of the Gall. Wherefore in this Disease Purging Medicins are to be used at first , and particularly Infusions of Rhubarb and Senna ; for otherwise , if they be boiled , or too strongly wrung out , they communicate those Particles to the Potion , that after Purging strongly bind the Body , which may be very hurtful . XXXVI . The Dropsie . The DROPSY is a Swelling of the whole Body , and more especially of the Belly , caused by a Collection of watry Humours . For when a watry Humour stagnates and grows thick in the Belly , then it obstructs the Surface of the Inwards , together with the Peritonaeum and Muscles of the Body , with a kind of slimy , pituitous Matter , which hinders that the Vapours and Steams arising from the Body , cannot be evacuated by insensible Transpiration ; which is the Reason , why those that are troubled with this Disease , are so difficult to be brought to Sweat. Whilst therefore these small Vessels are burst and broken by the thick and tough Particles , the serous Particles drop down into the Belly ; which being by degrees and continually increased , they produce the Dropsie , and other Ills in the Body . Wherefore for the Curing of this Disease , Medicaments that purge watry and serous Humours , are commended , as Pilulae de Ammoniaco with Mercurius Dulcis ; for the Mercury resolves tough and slimy Humours ; and the Gum Ammoniacum is proper to consolidate the burst Vessels . XXXVII . Hypochondriacal Melancholy , or the Spleen . HYPOCHONDRIACAL MELANCHOLY , or the Spleen , is a painful Sensation , caused by the Grossness , small Quantity , and Unevenness of the Spirits . For a sharp , sowr , and tough slimy Humour , lying hid in the Belly , breedeth Obstructions , whence all the Symptoms observable in this Disease do proceed . Wherefore also the Cure of this Distemper , is endeavoured by Decoctions made of the Barks of Tamarisks and Cappar-trees , of the Herbs of Germander and Chamaepytis , &c. If the Blood abound with vitiated Salts , volatile Acids , are commended , Antiscorbutical Herbs , and more especially sulphurated Tartar. And because praeternatural Acids generally have a hand in this Disease ; therefore all those Medicaments are used , that are proper to alter and destroy the same ; as the Alkalifate Salts of Herbs , Crabs-Eyes , Pearl , Diaphoretick Antimony , Salt of Tartar , and other such like . XXXVIII . The Scurvy . The SCURVY is a Distemper of the Blood , and other Juices of the Body , caused by a praeternatural Sowrness , afflicting more or less all the Parts of the Body , and accordingly producing a vast variety of Symptoms . For the Cause of this Disease chiefly consists in that the Blood is impregnate with much fixed Salt , or acid Juice , and is frequently to be imputed to the Air , that is fill'd with such like Particles ; which being drawn in by breathing , communicates the same to the Blood , and so forms this Disease . The Cure of this Disease is performed by Volatilizing of the Blood , and the fixed Salt , and by opening of Obstructions ; to which end Blood-letting is prescribed , that the thicker part of the Blood being evacuted , better Blood might be furnish'd instead of it , by introducing of a volatile Acid. XXXIX . The Stone . The STONE is a Disease caused in the Reins or Bladder , by the Gravel or Stone , accompanied with a most exquisite Pain , by their grating against the Fibres of the Kidneys and Ureters . It is the product either of the too great abundance or thickness of the Blood , or the sharpness of the Humours . And therefore when the Patient , subject to this Disease , doth abound with much Blood , the Breathing of a Vein is necessary , and afterwards the Gravel and Stone must be evacuated by Diureticks and Lithonthripticks : Emollient Glysters are also very much commended , for to make the Passages more slippery and open . XL. Stranguy . STRANGURY , is the continual desire to make Water , accompanied with an extraordinary Pain and Burning , caused by the sharp and pointed Particles that are in the Blood , or the Serous part of it . But the Cause of Bloody Urin , and of all other Bloody Fluxes , is the solution of any continuous Parts , caused by sharp and pointed Particles , pricking and cutting the Parts . And therefore the Remedies most proper for this Disease , are such as precipitate these acid Particles , or imbibe them , as likewise Anodynous Medicaments and Opiates . XLI . Diabetes . DIABETES is a most swift and copious evacuating of the Liquor we drink by Urin , sometimes with little or no change made in it , accompanied with extream Thirst and a Wasting of the whole Body . For in this Disease the Contexture of the Blood is too loose , and the Pores of the Kidneys are too open , and the praecipitating Salt does too much abound . Some think the Drink goes directly by some short Passages from the Stomach to the Kidneys . Others , that it runs through the Pores of the Stomach and Guts into the hollow of the Belly , where meeting with the Bladder , it enters its pores , and thus is evacuated soon after , without any , or with but little change . In this Distemper adstringent and absorbent Medicins are commended , especially joyned with Opiates , to imbibe that vicious Salt , which precipitates the Blood too much . Book . 1. Part. 8. Chap. 2● G. Freman . In. I. Kip Sculp : XLII . The Gout . The GOUT is a pain of the Joints , or parts about the Joints , caused by the various Corner'd Figures of Sales , or Saline particles , which twitch and prick the Fibres belonging ●o them . For when uneven and Saline particles do abound in the Blood , they by their Ruggedness and Points hurt the Fibres of the Nerves ; or the Saline particles , by their sharpness twitching and vellicating them , are the Cause of those exquisit Pains , which those that are troubled with the Gout do endure ; and other like Humours , impregnated with much the fame Particles , flowing to the Parts already afflicted , do increase the Pain , which is often accompanied with a swelling and light Inflammation . For the Cure of this Disease , ponderous things are made use of , as Crabs-Eyes , Coral , Chalybeats , Mercurius Dulcis , as likewise Sudorificks , Topicks , &c. XLIII . The French-Pox . The Disease commonly called the FRENCH-POX , is a Distemper of all the Humours of the Body , consisting in a Volatile Corrosive Acidity , disturbing all the Actions of it , and at last quite corroding it . For the sharp saline Particles that lye lurking in the Blood and Humours , do produce all the Symptoms that are obvious in this Disease . And therefore in order to the altering and blunting of these Particles , the Decoctions of Woods and Roots , and Mercurial Medicins are prescribed ; and for the evacuating of them out of the Body , Preparations that cause Salivation are made use of , and particularly Mercurius Dulcis . XLIV . Ague or Fever . An AGUE , or Fever , is an Effervence of the Blood in the Heart , sometimes exceeding that which is Natural , and at other times less ; but ever with greater Malignity . For when the Febrifick matter or humour , endued with a Fermentative quality , doth from its Focus or Seat , be it Mesentery , or any other part of the Body , in which it hath been a long time a gathering , come into the Veins , and is mingled with the Blood , and with it carried to the Heart , it stirs up an Ague . For when it is thus communicated to the Blood , passing through the Heart , the Matter of the First Element , which is a great Enemy to our Blood , doth greatly shake it , and confound the parts and mixture of it , in which Confusion the Nature of an Ague and Fever doth consist . Yet it is not every thing that mingles with the Blood , doth presently produce an Ague ; but such Matter only as is of a Fermentative Nature , that is , which disturbs the Mixture of the Blood. For this Fermentative Matter may be compared with Green-wood that is laid upon the Fire ; for as such Wood , when once it begins to burn , doth burn more vehemently than Dry-wood ; so the said Humour becomes more heated and dilated , than the Blood it self in its Natural condition . Hence therefore we conclude , that a Quartan Ague is produced , when the Matter , which is the Cause of it , stands in need of the space of 3 Days for its Concoction , before it can be fit to be united to the rest of the Blood ; a Tertian Ague , when 2 Days is enough for this purpose ; a Quotidian , when it is concocted every day , and mingles with the Blood ; and Continual , with Exacerbations or Fits , when the Corrupt Matter doth so much infect the Blood , that it cannot rid it self of those defilements from that time , that the last drop of that Humour is run out , and that wherein the first drop of that which is gather'd anew begins to enter the Heart . For this being the time wherein this depraved Humour , and ready to raise an Effervescence , is in greater quantity conveyed to the Heart , it must of necessity cause a greater Heat and Ebullition . Wherefore to the end that this Feverish Ferment may be expell'd in Agues , and more particularly in Quotidians , Vomits and Purges are used , which being exhibited at the Beginning , before the Fits , are found to be very successful in the Cure of them . But if the Ague be of long continuance , and the Stomach swoln , it is best to abstain from Vomits , and instead thereof to give gentle Purges ; because Vomits weaken the Stomach . As for Fevers , they are commonly Cured by Remedies that precipitate and imbibe sowr Humours , as Crabs-Eyes , Antimony Diaphoretick ; by such as thin the Blood , and make it more fluid , as Barly-water , Whey , &c. by such as open Obstructions , as Carduus Benedictus , Camphire , Venice-Treacle , Volatile Salts and Spirits . All Bitter things are also employed with good success , both in Fevers and Agues , because they strengthen the Stomach , and keep out the the Enemy ; so that according to the Report of Physicians , Agues have frequently been Cured , only be exhibiting the Compound Essence of Wormwood . CHAP. XXIV . Of Medicaments in General , and of their Operations . I. What ● Medicament is . HAving treated of the Diseases that afflict the Body of Man , it remains now that we add something concerning Medicins . Now a Medicament in general is that which being applied to the Body of a Sick person , is able by its virtue , to reduce it from a Praeternatural state , to a Natural . II. Of the several sorts of Medicaments . Some Medicins are Simple , as Roots , Barks , Leaves , Flowers , Fruits , Seeds , Gums , Juices , Animals and their Excrements , Products of the Sea , Salts , Stones , Minerals and Metals : Other are Compound ; and these again are either Internal , which by the Mouth are taken into the Body : And these again are either Preparatory , otherwise called Digestive , which prepare and digest peccant Humours , in order to their Expulsion , as Syrups and Conserves ; or Purgative , which evacuate the Matter that hath been prepared and ripened by the fore-going Digestives , as Purging Electuaries , Pills ; and those the Latins call Linctus , and the Arabians Lohoch ; or Cordial and Corroborative , which are used to strengthen the Body after Purgation , or rather when the Violence and Continuance of the Disease hath greatly weakned it ; as likewise to remove any Obstructions or Distemperature in the Bowels or Humours of the Body ; and take away the Symptoms of the Disease ( as Pain , Watching , Loosness , Swounding , ) such as are Cordial Confections , Powders , Troches . External Medicaments , are those that are outwardly applied to that part of the Body which is chiefly affected , and therefore are called Topicks , because they are applied to the place grieved ; such are Oils , Ointments , Cere-cloaths , and Plaisters . III. Of Medicins Common and Specific● ▪ But to leave the more particular Disquisition into these Matters to Physicians , I shall only in a few words speak something of the Common Medicaments , viz. V●mits , Purges , Diure●icks , Sudorificks or Diaphoreticks , Cordials or Alexipharmaccks and Opiates ; and then pass to Specificks , and briefly declare the Nature of them in general , and the manner of their Operation . IV. Vomits or Vomitory Medicins . VOMITS are Medicins that evacuate the Stomach , and drive out peccant humours upwards , and that by drinking luke-warm Water , but more readily if some Oil or melted Butter be mingled with it ▪ which will make the Stomach the more to loath it , and therefore the more easily to discharge it . Besides these common things , several Chymical Preparations are made use of to this purpose , as Salt of Vitriol , Glass of Antimony , Flowers of Antimony , Crocus Metallorum , Sulphur of Antimony , Mercurius Vitae , the particles of all which Preparations , when dissolved , do so violently twitch and affect the Fibres of the Stomach , as to cause a Conlvulsive Motion both of that and the Neighbour Parts , viz. the Gut called Duodenum , the Porus Choledochus , or Passage that conveys the Gall , and the Ductus or Vessel of the Pancreas , by which Colvulsive motion whatsoever is contained in them is carried up to the Stomach , and from thence to the Mouth ; and not only so , but by these Vomits the serous part of the Blood is often drawn out of the Extremities of the Arteries , carried up to the Stomach , and thence evacuated by the Mouth . V. Purging Medicins . PURGING MEDICINS are such as move and loosen the Belly , and drive out the peccant Humours in the Body of Man by Stool , such as are Roses , Violets , Cassia , Manna , Aloes , Rhubarb , besides manifold compound Purgatives . The reason of the operation of these Catharticks is , because they painfully affect the Spirits that are in the Fibres of the inward parts of the Body , and provoke them to excretory contractions ; and moreover raise a Fermentation in the Humours , and thereby produce several fusions and separations of their parts . For tho' Manna and Cassia and other such like Gentle Purgers , which consist of very subtil parts , do not at all , or very little disturb the Stomach ; yet as soon as they are past the Pylorus , or outlet of the Stomach into the Guts , they begin to irritate and twitch the most sensible Membran of the Gut Duodenum , and before they get any further , almost spend their whole force there . And because by the twitching and vellication of this Mmembran , the Porus Biliaris or passage of the Gall is considerably shaken , therefore they produce Bilious dejections . VI. Purging Medicins do not act Electively . The opinion of old was , that Catharticks purged Humours Electively , that is , by choice , as evacuating one Humour rather than another : They were induced to be of this Opinion , because they often found that the Excrements evacuted by purging Medicins , were of a Yellowish , and sometimes of a Blackish Colour , whence they concluded , that some Catharticks , purged Choler , and others Melancholy , as it were choosing and separating them from the rest of the Humours . But this is no better than an error ; for tho' there be purgative Medicins that evacuate Choler , Phlegm , Melancholy and Watry Humours , which gave occasion to Physicians to distinguish Catharticks into Cholagogues , Phlegmagogues , Melanogogues and Hydrag●gues ; as for Example , Rhubarb and Scammony , purge Choler rather than Phlegm ; whereas Mercurius Dulcis , and the Troches Alhandal , evacuate Phlegm rather than other Humours . Yet is not this so to be understood , as if Scammony , for instance , purged Choler only , without touching any other Humours ; or Mercurius Dulcis only expelled Phlegm ; for it is certain that it purgeth other Humours also , tho' not so copiously as that of Phlegm ; and therefore some Pungative Medicins may well be called purgers of Choler , and other Phlegm , &c. for tho' they do not purge that Humour only , whence they take their denomination , yet they do purge that Humour more copiously and signally than any other . VII . Diureticks : DIURETICKS are Medicins that purge by Urin , such as are the Roots of Smallage , Parsly , Radish , Bitter Almonds , Spirit of Salt and of Nitre , Juice of Limons and of Sorrel , White-wine , Renish-wine and Cyder ; which when taken into the Body , do precipitate the mass of Blood , and separate the Wheyish part from it , which soon after is evacuated . For the particles of these Diuretick Medicins by their pointedness and thinness penetrate the Vessels , and by diluting , inciding and dissolving the Blood , cause a great quantity of Wheyish Matter to be separated from it in the Reins , and to be thence evacuated by the Ureters . VIII . Sudorificks or Diaph●reticks . SUDORIFICKS are Medicaments that provoke Sweat , such as are the Leaves , Roots or Seeds of Carduus Benedictus , Contrayerva , Angelica , or the like , being taken either in Pouder , Decoction , Conserve or Magistery . The reason of their Operation is , because they consist of such particles as are very friendly to the Stomach and Guts , and therefore do not produce any Convulsions or Excretory Motions in them ; only the mass of Blood being by them Rarefied and Heated , and consequently more swiftly circulated , do put the Body into a Sweat. Moreover , the particles of these Diaphoreticks entring the Vessels which are implanted in the Stomach , mix themselves with the Blood , and raising a Fermentation in it , make it run more swiftly through the Veins to the Heart , and there entring with some impetuousness , encreaseth the Beating or Pulse of it , by which means the whole mass of Blood , being rarefied and enkindled , rusheth more swiftly through the Arteries to all the outward parts ▪ which not being able to admit it , nor the Veins to send it all back to the Heart , a considerable part of the serum of the Blood is evacuated through the Pores by Sweat. IX . Cordials . CORDIAL MEDICINS are such as are proper to restore and kindle the interrupted or weakned Fermentations of the Blood in the Heart . Wherefore these Remedies are not called Cardiaca or Cordials , because they are appropriated to strengthen and comfort the Heart , as are all things that are Spirituous and Volatil , such as Saffron , Wine , especially to those who are not accustomed to the drinking of it , and Strong Waters . The reason of which operation is because their Volatil Particles entring the Blood , separate all Heterogeneous and Malignant Particles from it . Neither is the Passage from the Stomach to the Blood so long , that there should be need to fear that the virtue of these Medicaments would be lost by the way . For it is evident that the inward Nervous Coat of the Stomach is all interwoven with multitudes of Veins and Arteries , so that Medicaments , not only Purgative , but any others may exert their operations upon the Blood , before ever they pass out of the Stomach . X. Opi●●s . OPIATS are those Medicines which have Opium for their Basis or chief ingredient , and are proper for the laying of Noxious Vapours , and asswaging of Grievous Symptoms , for the strengthning of the inward parts , the removing of Pain , and recruiting of the Animal Spirits . The manner of their performing these effects is this , the particles of these Medicines do put a stop to the out-going or efflux of the Animal Spirits and suppress them ; so that during the operation of the Opium , they do flow much more sparingly to the inwards and other parts of the Body . And accordingly the Pulse of the Heart , and Respiration are diminished in their swiftness and force , and sometimes cause a difficulty of Breathing , and a weakness of the Pulse , with a listlesness to move , and drowziness over the whole Body . XI . Why the Author treats of Specificks . Next after the common Medicins follow SPECIFICKS , whose Virtues discovered by Experience , are consistent with the Principles of our Philosophy , and may be perspicuously unfolded by them . Some Galenists indeed have altogether rejected Specificks , probably because they found themselves unable to explicate the manner of their operation . XII . What a Specifick is . The word Specifick is by Physicians used in a threefold Sense ; for some call that a Specifical Medicin , which is peculiarly friendly to some particular part of the Body , as to the Heart , Liver , Brain , &c. Others call that a Specifical Medicin , which by a peculiar Quality doth evacuate some determinate Humour , as Rhubarb and Cassia are said to Evacuate Choler ; Senna , Melancholy ; Jalap and Diagridium , Serosities and Phlegm . But more frequently that is called a Specifical Medicin , which peculiarly cures some particular Disease , as the Pleurisie , Tissick , Colick , Dropsie , and in this Sense I take it here . XIII . Whether there be any Specifical Medicins . It may therefore be enquired , whether there be any such Specifical Medicins . Some Dogmatical Physicians , leaning too much upon the Principles of the Scholastick Philosophy , will admit of no Medicinal Virtues that cannot be reduced to their manifest Qualities : But GALEN somewhere complains of these Men , that they either plainly deny matter of Fact , or else assign such causes to these effects as are not sufficient to explain them . So that not only Galen , but many other Learned Physicians , both Modern and Ancient , do maintain that there are Specifick Medicins . XIV . The effects of Specificks may be explained Mechanically . It may also be queried , whether the effect of Specificks are mechanically explicable , that is , whether they be consistent with the Principles of mechanical Philosophy ; to which I answer , that the Principles of the said Philosophy are of such a vast comprehension , that he who considers it , will not at all question , but that the effects of these Medicins may be explained in such a manner , as shall not in the least contradict the said Principles ▪ XV. In order to the explaining of the Effect : of Specificks , the make or structure of Mans Body is to be noted . To make out this we are to observe , that the Animated Body of Man is not to be considered as a meer Statue , as if it were nothing else but a dead heap of several parts and matters whereof it consists ; for to speak the truth , it is a most wonderful and curious Machin or Engin , composed of fixt , liquid and spirituous Substances , with such exquisit Artifice joined together , that frequently we cannot judge so well concerning the action of an Agent that acts upon it , from the Power and forces of the Agent , considered in it self , as by the effects proceeding from it , because of the mutual action of the parts of this Living Machin upon each other . XVI . Another thing to be noted about the operation of Specificks . It is likewise to be observed from the learned Mr. BOYLE , that it is not necessary that the Operations of all Specificks , or of the same in differing Diseases , must be of one kind ; but differing Specificks may operate in several manners , And of these general ways he has proposed such as follow , premising only , that the Specifick Remedy do's not commonly , tho' sometimes it may , relieve the Patient by this or that single way of Operation , but by a Concurrence of two or more , that as it were join their forces to produce the desired effect . XVII . The first way or manner whereby Specificks perform their Effects . Specifick Medicins may sometimes cure by discussing or resolving the Morbifick matter , and thereby making it fit for expulsion by the greater Common-Shores of the Body , and the Pores of the Skin . For it is most notorious , that a great many Diseases , and those very obstinate and Chronical , are caused by some tough and slimy Humours , which obstruct the Passages , and so hinder the Circulation of the Blood , and the free motion of other useful liquors ; which peccant Humours are sometimes so exceeding Glewy and Ropy , that they will not give way to common Remedies . Whereas the Specifick , by the minuteness of its Parts , and the congruity of their Figure with the Pores of Morbifick Matter may be able to penetrate and resolve it , with the concurrent heat of the Patients Body , and thereby dispose for an evacution by Urin , Sweat or otherwise , as Nature finds most convenient . So that the Blood , or some other Liquor of the Body being impregnated with the amicable and Active Particles of the Matter , may be a Menstruum to dissolve the peccant matter ; even as common Water impregnated with Salt Armoniack becomes a Menstruum , which by degrees will dissolve Copper and Iron . XVIII . The second way or manner . Sometime a Specifick Medicin may mortifie the too over Acid , or other immoderate Particles that infest the mass of Blood , and destroy their Coagulatory or other Effects . For seeing that most Distempers do arise from Acids , and their Malignant Effects , it is very probable that all such Diseases may be cured , or much alleviated by such a Remedy as abounds with particles proper to mortifie the said Acid Juices . Which Mortification may be effected these two manner of ways : for there are some Bodies which destroy Acids by a Positive Hostility , that is to say , by such a contrariety as is discernible by the Taste , and by a conspicuous ●ight or conflict they maintain with the Acid Juice : Of this kind are all fixed Askalies , viz. the Lixivous Salts of Plants , and all volatil Alkalies , as Spirits of Harts-horn , Salt Armoniack , &c. ▪ Another way whereby Acids may be mortified or dulled is , when their Particles are , as it were , sheathed or blunted ; for as a Knife may be disabled to cut , either by filing or otherwise blunting its Edge , or else by covering the Blade with a Sheath fit for it ; so an Acid Compound may lose its power of cutting or pricking , when an Alkali alters its Figure , or when its sharp particles are , as it were , sheathed in the Pores of some other Body , tho' it may be the said Body may be wholly without Taste , or any considerable manifest quality by which it might appear contrary to the sowr Juice it enervates , as a File is contrary to the Edge of a Knife . XIX . The third manner . A Specifick Medicin may sometimes help the Patient by precipitating peccant Matter out of the Blood , or other Humours of the Body . Thus SENNERTUS seems to intimate that in some cases the Disease is vanquisht by a precipitation of the Aguish Matter . And KERGERUS in his Treatise of Fermentation , Sect. 3. Cap. 3. tells us in plain terms , that he had cured above 1000 persons of Agues without Blood letting , Purging , Diaphoreticks , Diureticks , altering Medicins or Topicks , only by means of one precipitating Medicin . Neither need we to fear any danger in these precipitations by the particles of the Medicin entring into , and spoiling the Temperament of the Blood ; because it is certain that Heterogeneous Matters in the Blood may be precipitated by means of Remedies which never enter the Blood : For Physicians often exhibit filings of Steel , and other preparations of that Metal , to mortifie the Acidities of the Blood , and yet we have no reason to believe that the said metalline particles ever enter the Blood. XX. The fourth manner . Sometimes Specifick Remedies exert their effect by a peculiar corroborâting of the Heart , and by that means , or without it , the Parts affected . For seeing that the Heart , Brain , Liver , Kidneys are all of them of a peculiar make and structure , and so likewise the liquid parts , as the Gall , the Blood and the Lympha ; it may happen that the particles of a Remedy dissolved in the Stomach , and carried up and down the Body in the Vehicle of some of its Liquors , may according to their determinate Figure , Size , Stifness , Flexibility or Motion , &c. be more fit to be admitted in some one part of the Body , as the Brain , Heart , &c. than another , and so by continuing in the Pores thereof , and associating themselves to the Fibres , or furnishing it with some particles it wants , may strengthen the Tone of that Part , and enable it to resist the action of the Morbifick matter , and expel it . XXI The sifth manner . Sometimes a Specifick Medicin may exert its operation , by producing such a Disposition in the Mass of Blood , as may enable Nature by correcting , expelling , or other fit ways , to overcome the Morbifick matter , or other cause of the Distemper . For seeing that as most of the Diseases incident to Mans Body , are produced by a vitiated constitution of the Blood , so the recovery of it to Health and Soundness depends on the restoring of it to its former state ; a Specifick Medicament may divers ways effect this advantageous change of the Blood. As First , by furnishing the Blood with some very active particles , by which means it will not be necessary for the Midicament to raise any Fermentation in it . Secondly , A Specifick may be of great use in restoring the Mass of Blood to a laudable state , by dilating and attenuating or thinning of it . For when the Blood is too thick , as frequently it is , it cannot so freely pass through the Capillary Vessels whence an obstruction will follow in them ▪ whereby the Circulation of the Blood will be retarded , and great inconveniencies accrue to the Body . And on the other hand , if the Blood be too thin , especially if it be overmuch agitated , it will easily run out of the Vessels , and produce various Fluxes of Blood , and other dangerous effects , that commonly accompany the extravasation of the Blood. Now a Specifick Medicin may correct this vitious consistence of the Blood , by furnishing it with such Particles , which by their Figure , Bulk , Motion , &c. may subdue those vitious particles that thicken the Blood , and attenuate them ; or by dividing the parts of it dispose it to a greater degree of Fluidity . And when the Blood is too thin , which is the effect sometimes of Diseases , and sometimes of certain Medicaments , and more particularly of Aloes , a Specifick in this case may afford such particles , as by their easie complication and infolding one another , may curb the too active particles of the Blood , which do too much attenuate it , or it may assist the expulsion of the said particles by transpiration , or any other way . Thirdly , a Specifick may be helpful to restore the Mass of Blood to its former good state , by some particular operation it may exert upon the Heart , by strengthning the Tone and Vigor of it , so as that it may be able to transmit the Blood to the greater advantage and welfare of the Microcosm . XXII . The sixth manner . Sometimes also a Specifick may unite its particles with those of the Peccant Matter , and with them constitute a Neutral Matter , that may be easily , or is not needful to be expelled . As when the Blood being impregnated with an Acid Juice , hath lodged the same in some stable part of the Body , as in the Liver , Spleen or Kidneys , &c. In this case the particles of the Specifick may without any sensible contest or effervescence , when manifest Acids are mortified by such like Alkalies , so combine themselves with the particles of the vicious Acidum , as to make one compound with them , which differing from the particles of the sowr Juice in Motion , Figure , Solidity and Stiffness , or in one or more of the same , must needs constitute a substance of a Different Nature from the said Acid particles before that they were corrected . XXIII . An Advertisement concerning Specificks . It was noted before , that when it was said that a Specifick doth cure a Disease , it is not to be understood as if a Specifick Remedy , or Nature by means of it , did for the most part cure Distempers by one only of the propounded Modes , seeing that two , or more of them may concur to produce this effect . Besides , I have only here undertaken to explain the operation of Specificks in General ; but never asserted that the ways and modes by me propos'd , to be true and genuine , but only propounded them as so many probable ways whereby Specificks may produce their effects . Wherefore these things are not Dogmatically asserted by me , but only delivered by me as Possible or Probable Explications , my chief design being only to evince thereby , that the Operations of Specificks are congruous to the Principles of Mechanical Philosophy . XXIV . An Objection against Specifick Medicins answered ▪ There is an Objection the Rejecters of Specifick Remedies usually urge against them , which is , that by being taken into the Stomach and entrails , they are greatly changed by Digestion , and mixture with the Aliments , a good part of them sent away by Excrement ; and that as soon as they are got out of the Stomach , they pass through manifold Strainers of different Textures , which in all probability stop the greater part of the Medicinal Particles . But this Difficulty will disappear , if we consider that Rhubarb ●●ngeth the Urine of those that have taken it , many hours after , with a Yellow Colour . That Elaterium eaten by a Goat , communicates a purging quality to its Milk , so as to purge a Child that takes of it . For the ●articles of some Bodies do very obstinately ret●●n their Figures , and do not easily quit their virtue . For if a Me●icament exerts its activity by impregnating the Blood , or any other Liquor in the Body , thereby turning it into a kind of Menstruum , it may so happen that the several Strainers through which the Particles are to pass , may stop the less f●● parts of the Vehicle , so as to make the Menstr●●m more appropriate to the overcoming of the Peccant Humour , or that at least thereby it may be so changed as to restore this Substance in the Body of a Man rather than another . And tho' there may but a small quantity of the Medicinal Matter reach to the part , on which it is to act , 〈◊〉 ought not we to question the effect upon that account , seeing that the 〈◊〉 of Natural Agents upon the Body of 〈◊〉 is not to be measured by their Bulk or Quantity , but by their Activity and Subtilty . XXV . An Objection concerning Topicks . An Objection may be also made against what hath been here asserted concerning the Operation of Medicaments , that all Topical Medicins , especially such as are applied to the Wrists , Amulets , and things hung about the Neck , or only outwardly touching any other part of the Body , cannot afford sufficient Medicinal Particles for corecting of the Peccant Matter , or subduing of the Disease . For an Answer to this Objection , it will be sufficient to consider that the Skin of Mans Body is very full of Pores , by which the more subtil particles of the Remedy may enter ; as is evident from manifold instances . Water penetrates the Pores of the Bladder , and dissolves the Salt of Tartar or Sugar contained in it . Quick-silver mixed with Ointments , and outwardly applied , insinuates it self through the Pores of the Skin , into the most inward parts of the Body , where it often produceth most violent operations . Neither can it be difficult to conceive how the particles of any Specifick being once got into the Pores , may further diffuse themselves throughout the ●ody , fo● asmuch as near the Cuticle or thin outward Skin 〈◊〉 the Body there be many Capillary Vessels , which tho' very small , yet have their Cavities continuous with other greater Vessels , and it will be easily understood that the particles of the Medicament , being once entred into these Capillary Vessels , will by the Vehicle of the Liquors contained in them , be transmitted to the Branches of the Principal Veins , and so by means of Circulation be mingled with the whole mass of Blood , and with it conveyed to all parts of the Body . XXVI . Whether there be any Medicaments appropriated to any particular part of the Body . The only difficulty that remains now to be removed , is whether there ●e any Medicaments that are appropriate to this or the other particular part of the Body ? To which I Answer ▪ that there is no impossibility nor improbability in it , that the Particles of a Specifick Medicament should be destinated more to one part of the Body than to another , so as not only to strengthen it , and preserve its sound Constitution , but to restore it to its former strength and vigor , when 〈◊〉 by any Disease of Di●●emper : Fora●m●c● a● by ●●eir particular Texture , Motion , &c. they may 〈◊〉 a peculiar manner prepare the Molesting Matter for Expulsion , and withall so work upon the Fibres of the Part affected , as both to Enable it , and Excite it to free its self from its Enemy . The Ninth Part OF THE INSTITUTION OF PHILOSOPHY . OF MAN , Considered in the other PART , The MIND . CHAP. I. Of the Nature of Human Mind , and that it is more Evidently perceived than Bedy . I. That too much Credit is not to be given to our fallacious Senses . SINCE we have often been deceived by our Senses , and the Images of things have been impos'd upon us , which differed from the Objects whence they proceeded , or whence we imagined they proceeded ; and since in our Dreams we have seem'd to behold some things , which nevertheless were far enough off from us ; and to hear things which in no wise smote the Organs of our Hearing : We have hereupon sufficient Cause to suspect that Corporeal things are not always such as we apprehend them to be , and consequently that we have sufficient reason to doubt of their Existence , forasmuch as Natural Reason dictates to us , that we are not to trust those things which have at some time or other deceiv'd us . Wherefore we may doubt whether there be a Heaven , Sun , or Stars ; whether those Bodies which are about us are real ; whether we have Body , Feet , or Arms , in regard we have oftentimes in our Dreams seem'd to make use of them , whenas at the same time , deep Sleep hath bound us fast , and rendred us immoveable . II. The Existence of Human Mind is inferr'd from hence , That we are . But though we may doubt of the verity of Corporeal Things , yet we cannot doubt but that we have an Existence , so long as it is certain we doubt ; for it is impossible that any one should doubt or think , and at the same time not be . Whence this Proposition , I think therefore I am , is the first certain Conclusion we can possibly make , when we muster up our thoughts in Order ; whence it is inferred , that our Mind is more known to us than our Body , in regard whatever doubt we make of other things , we cannot but Be so long as we Doubt . III. The Soul is not any thing belonging to the Body . For if I attentively weigh and examin who I am , who write these things , who see , who hold the Pen , who draw the Lines ; I know for certain , that were the use of my Hands taken away , my Eyes digg'd out , and my Fingers cut off , I could neither write , see not touch ; but nevertheless should find it apparent that I yet Exist ; and suppose I were depriv'd of all Exterior Senses , yet still I am , so long as I think : For my Body may be dissevered into divers parts , and none of those parts be remaining with which I am encompass'd , since I am not all Heart , nor Brain , nor Liver , nor any other of those parts which constitute the Body ; yet nevertheless something of me may be remaining , which makes use of those parts , and with which it is surrounded as with a Garment . Book . 1. Part. 9. Chap. 1. G. Freman In. I. Kip Sculp . To the Worshipfull John Hervey of Jckworthin the County of Suffolke Esq . This Plate is humbly Dedicated by Rich : Blome V. A Definition of Human Mind . Human Mind therefore may rightly be defined a Thing thinking by a certain peculiar way , finite , and as it were , by mutual Covenant joyned to a Body well disposed . And herein it differs from an Angel , or Spiritual intelligence , which is indeed apt to assume a Body ; but not so firmly inclining to it , as to desire , as the Human Mind doth , to have it intimately united . VI. Why a Thinking thing is said to be finite . But it is called Finite , because tho' a Human Mind always Thinks , yet it Thinks not of all things , nor penetrates immediately into those things of which it Thinks . Moreover it Wills many things which it attains not to , all which are Arguments of imperfection , from which the infinite Mind , that is to say , God Almighty is absolutely free . VII . What is to be understood by the name of Cogitation . By the name of Thought is understood that interiour Sense and Conscience by which we are certain of all those things , which we Act or Suffer ; so that to say that Human Mind is a Thinking substance , is no other thing than to say , that there is in it a Conscience , or Co ▪ discerning of all Cogitations , Wills , Appetites and Sensations which are found therein ; whether it be their Principle , or suffers from others : For certain it is , that whatsoever is in us which depends not upon the Cogitations of the said Mind , belongs not to it . Whence the simple Cogitation of Human Mind may aptly be defined to be , an implanted Action of Human Mind : Whereof the said Mind by its own testimony is conscious . In the first place , Cogitation is said to be something implanted in the Mind , because it is indeed the very Essence of the Mind . Secondly , It is said to be by its own testimony conscious , in regard every Mind hath its own Cogitation so known , that tho' there should be a doubt concerning other things , yet the Cogitation , it self can never be called into doubt ; since the doubting , nay the very Erring person must of necessity Think . VIII . The Soul Thinks even in Sleep . Some difficulty may haply arise from the foresaid definition of the Mind , as if Human Mind be a Thinking substance , that is , Willing , Nilling , Doubting , Perceiving , &c. it should always Think , which seems a thing impossible to any one that is asleep , since then we cannot be conscious that we do Think . To this I answer , that nothing occurs to us in Sleep , which directly or indirectly proceeds from the Soul , whereof we are not conscious ; and tho' our Soul in the midst of Sleep may Think , but negligently , yet it is not to be thought totally destitute of all Cogitation : By the same reason almost as when it is said , that there is no part of the World which is at any time totally void of all Motion , tho' some parts may be said to Rest , by reason of the more slow and insensible Motion , and may seem as it were deprived of all Motion . IX . Why we remember not our Cogitations . It may haply be urged , if this were true , we could not but remember at least some of those Cogitations , but we dayly experience the contrary . I answer : It is one thing to be conscious of our Thoughts , and another thing to remember them ; for there is more required to the remembring of any thing , than to the being conscious thereof ; for to remember a thing so long as the Mind is joyned to the Body , it is requisite that the Species or Image thereof should have its Vestigia or Footsteps in our Brain , upon which we afterwards reflecting should remember ; but to Think , it is sufficient that we are conscious of our Perception or Cogitation , which happens not only to persons Sleeping , but even to Infants in the Mothers Womb. Since doubtless those very Infants have many Cogitations , and their Minds taken up with Idea's of Heat , Cold , Titillation , Pain , &c. which proceed from the Union of the said Mind with the Body ; however they remember not afterwards what they Thought , or suffered at that time . X. Whether the Power of Thinking sufficeth for the Mind to be called Cogitant . If it be alledged that it is sufficient for Human Mind to be called Cogitant , for that it hath the power to Think , and not for that it always actually Thinks : As a Potter hath a faculty always of forming Pots , Pitchers , &c. yet nevertheless for want of Clay , or the Potters Wheel , cannot always reduce his Power into Act ; so it suffices , that there be implanted in the Mind a Power to Think , tho' it do not always actually exercise that Power for want of Matter which should occur , or through the defect of Organs which are hinder'd in Sleep . XI . The Answer . The Answer is easie ; for there is no necessity that the Potter should always actually Operate , by reason he Acts ad extra , or Externally , and requires External Matter for those things he is to form ; but Human Soul in its Operations wants no Object to tend unto : For if all things which are to smite the Senses of the Body were removed , it would yet have the Idea of it self , and of all those Verities which we term Nota per se , or known of themselves , and consequently Human Mind cannot but always Think ; and certainly it seems to imply a contradiction , that that Spiritual Part of ours , so long as it hath an Existence , should not Think , since it is no other than a Thinking thing , and we can conceive nothing in it besides Cogitation or Thought . XII . Soul is opposed to Body as Act to Power . For the difference between Matter and Soul is , that that is the Potentia or Power , this the Act ; so that Cogitation must needs be always present in every Intellectual thing , but actual motion is not always requisite in Body or Matter , in regard its Nature is Sluggish and Idle , that it comprehends Potentiality or Power , and not Act ; but for a Soul to be without Act or Cogitation implies a Contradiction , since if you take away Cogitation from it , there will remain nothing in it of positive and absolute , by which it may be said to Exist . XIII . Human Mind cannot be without Cogitation . I know that some will object , that Human Mind may be without all Cogitation ; but this we absolutely deny : For if it should so happen , it would either so happen , because it hath not a Power or Faculty of thinking , or because it will not have such a Faculty or Power . If it hath not such a power , its Essence is destroy'd , in regard it consists in Cogitation ; but if it will not , that very thing is an inference that it doth think , since to Will and Nill are Modes of perceiving , for we undergo no greater difficulty in conceiving that the Soul must needs always think , than in conceiving the Light must needs always Shine ; and that Heat cannot but be always Hot , for as much as it belongs to the Essence of the Soul to Think , as it belongs to Light to Shine , and Heat to Warm or make Hot ; for a Faculty supposes something real , and Existing in Nature ; or if we well attend to our Conception , it is no other than a thing really mutable and capable of divers Modes ; So that as the faculty of receiving Figures in the Body , is meer Extension , so the faculty of Thinking in the Mind is meer Cogitation , so far as it may be applied to divers things , and by divers ways . XIV . To think is no less Essential to Human Mind , than to be Expended is to the Body . Moreover the Actual Cogitation of the Soul may be proved by comparing it to the Body ; for as it cannot be granted to be a Body which is not extended ; that is , which hath not an actual and determinate Figure ; In like manner Human Mind must of necessity have some Cogitation , which in a manner is its Life ; but that Children and Infants in the Mothers Womb , should not afterwards remember their Cogitations in that State , need not be any matter of wonder , since in Persons of more adult Age , there may possibily sometimes remain no memory , not only of things which were represented in Sleep , but also even of those things which have been acted or thought on Waking . XV. Cogitation is either taken for the thing Thinking , or for the Modes of Thinking . It will yet more clearly appear , that Cogitation belongs to the nature of Human Mind , if Cogitation be in a twofold acceptation considered , first as it is that which constitutes the Nature of an immaterial thing , and then it is no other than that thing which Thinks ; in another sense Cogitation may be taken for divers Modes of Thinking , in as much as Substance is capable of Exciting divers Cogitations , for the Thinking Nature hath power from it self to draw forth such or such Acts ; nevertheless it is not thence to be inferr'd , that a Thinking Substance is something universal , containing all the Modes of Perceiving : No more than it can be said , that a Body is something common containing all Figure ; because Cogitation is not a Universal , but a particular Nature which admits all those Modes , as Extension is a Nature receiving all Figures ; for we may very well conceive a Cogitant Nature , tho' all its Modes are not known , yet they cannot be understood without the said Cogitant Nature . For if I Imagin , if I Will , if I Remember , Cogitation appears in all these things ; yet on the contrary , if I think , there is no necessity that there should be any one of these in particular , and consequently Imagination , Remembrance , Volition are only divers Modes of Thinking , even as Figure , Motion , Site , &c. are divers Modes of Extension , or of a thing Extended . XVI . Mind is Cogitant as Matter is Extense . Wherefore we must conclude , that the Essence of Mind is placed in Cogitation in the same manner , as the Essence of Matter consists in Extension , and according to the various Modifications of Cogitation , Mind is always Willing , Imaginant or Sentient ; in like manner , as according to divers Modifications of Extension , Matter assumes the Form sometimes of Water , sometimes of Fire , sometimes of Fewel , or infinite other particular Forms ; and consequently as a piece of Wax may be changed into divers Figures , and be Round or Square , not without varying its Nature ; so Human Mind remains one and unvaried , although it may be altered divers ways , and may be mutable by a different Application of it self to Heaven , for example sake , Earth , God , Angels , &c. because tho' it be limited and finite , yet it is not determined to any thing certain , and consequently Thinks or perceives all things which are deeply inherent in it . XVII . The Soul or Mind is the cause of individuation to the whole Man. I have heretofore in several places said enough to shew , that the Soul or Mind is a certain substantial Form , when as all other Forms are nothing else but certain rangings and dispositions of Parts . Nor must I now omit to declare openly , and in most express Terms , that it is that which individuates a Human Body , or rather Man himself , and does principally and essentially make one to differ from another . For as the whole Essence of a Human Body in general , consists in a certain disposition to receive a Human Soul ; and the particular Essence of each Body , as for instance the Body of Peter , is founded in a particular disposition it hath to receive its own proper Soul ; supposing that in some part or portion of Matter , should be found the same essential disposition , which that Body had wherewith Peter was Born , it cannot be otherwise , but that it must be a Human Body , even the Body of Peter himself , and the very same in number wherewith he was Born ; forasmuch as it hath the same essential Form , or principle of Individuation : And also if the same Scul , to wit Peters , were actually united thereto , it is necessary for the same reason that there must be a Man , yea , Peter , and the same numerical Peter that was before . CHAP. II. That Human Mind is distinguisht from the Body , and is Spiritual and Immaterial . I. The Mind is to be distinguisht from Body . THAT the Immateriality of Human Mind may the more clearly be discerned , it will not be from the purpose to explain more at large the Essence of Mind and Body , and shew wherein they may be exactly distinguisht . II. In every thing a principal Attribute is given from whence other things proceed . They who have most deeply searcht into the Nature of things , have observ'd among the Attributes , which constitute the Essence of any thing , that there is one primary Attribute , which in a manner gives a being to it , and from whence all the rest flow as from a Fountain : As Cogitation in respect of Human Mind , for as much as all things which are found in it presuppose Cogitation ; for Imagination , Volition or Will , Sensation , &c. are only different Modes of Cogitation , which spring from it , as from its Root : For to Imagin is another Mode of Thinking , than to Will ; and to Will , another Mode of Thinking than sensation . In like manner Extension is the first Attribute , which constitutes a Corporeal thing , and from which all the rest are derived , for as much as all things which attend it , presuppose Extension ; for whatsoever hath Figure is Extense , whatsoever can be divided is Extense , and whatsoever is contained in place is Extense ; so that Cogitation and Extension constitute the Natures of Intelligent and Corporeal Substance . III. An Objection from the confused Idea of a thing Extense and a thing Cogitant . If any one urge , that there are Idea's granted which involve Cogitation and Extension together ; for Example , the Idea of Pain , Colour , &c. for whosoever is sensible of Colour , Pain and other Idea's of the Senses , or does but imagin them , Extension must needs occur to him with such a Perception . Who is able to perceive Whiteness , or any other Colour , without Extension ? Wherefore if Idea's be granted , which are compounded of Cogitation and Extension ; what hinders , but that we may judge that there is in the thing it self somewhat like to that Idea ; that is to say , that Cogitant and Extense may be in the said Thing at the same time ? IV. Composition takes not away Distinction of Parts . I Answer , that by this Argument Cogitation is not concluded to be one in Reality and Essence , with Extension , but only in Composition . So that Cogitation and Extension , or a thinking and extended Substance , constitute one Compound , so far as there are found therein divers Modifications of Cogitation and Extension ; which together , and in one act are attain'd by the Senses , and also by Imagination . And in Truth , if the Matter be narrowly weighed , it will appear that those Idea's of Senses and Imagination , in which Extension is joyn'd with Perception , afford us no other Notion , than that Cogitation and Extension have an Existence together , or that we are compos'd of Mind and Body . So that these two things are no ways oppos'd to each other ; to wit , that the Judgment concerning these things , follow the Idea's which we perceive by sense , and is conformable to them ; and yet the Nature of a thing Thinking , is altogether distinct from the Nature of a thing Extended . V. Mind di●●rs more ●rom Body , than from Nothing . For the Idea of the Mind , hath nothing common with the Idea of the Body , and one of them may be clearly and distinctly conceiv'd without the other . Nay , so great is the difference between Cogitation and Extension , that Cogitation may more properly be said to be Nothing , than Extended ; because tho' in respect of Substance generally so taken , Mind differs not more from Body , than from Nothing , since both of them is something subsistent , and wants not the help of another Substance to Exist ; yet if they be consider'd in themselves , so far as one of them is Extense , and the other Cogitant , they are more distinguish'd from each other , than from Nothing ; in regard every Creature , being not a most perfect Entity , but including many Imperfections , participates of Nothing . But it can be no way apprehended , that the Idea of Cogitation should include any thing of the Idea of Extension , and consequently Cogitation disagrees or differs more from Extension , than from Nothing . In the same manner as Vertue is more properly distinguish'd from Vice , than from Stupidity : And Science is more remote from Errour , than from Ignorance . VI. It is prov'd that the Soul is Immaterial . This distinction being well understood , it will be no difficult thing to make out , that the Mind is a Spirit , or some Immaterial Entity ; because since Mind and Body are Subjects of different Proprieties , the Conceptions which we have of them , are also absolutely different . For the diversity of Essences is known to us by their Proprieties . Nor have we any other Indication whereby to judge ; that the Natures of things are different , than by inspecting into the distinction of Proprieties in them . For we have no other way to make observation , that Ice and Fire differ from each other ; but because Fire heats , and Ice cools ; or that the Eye is a thing different from the Foot ; but because we see with our Eyes , and distinguish divers Objects , and with our Feet we walk and sustain our Body . Since therefore Human Mind and Body have altogether different Proprieties , no Man can doubt , but that there is an absolute distinction between them ; and I dare say , there are no Attributes which are more opposite one to another , than to Think and to be Extended . For to be Corporeal , and to Know , what relation have they one to the other ? What Similitude can be apprehended between Perception and Motion ? or between Will and Figure ? Whence it is plainly to be asserted , that Mind and Body are altogether different ; and consequently since Body hath Extension , the Thing thinking must needs be void of all Extension ; which is the same thing as to be Immaterial : For by the Name of an Immaterial Entity nothing else is to be understood , but that which hath no parts , and is void of Extension . VII . An Objection drawn from the distinction of Justice and Mercy in God If it be Objected , that diversity of Conceptions does not always infer a difference in things ; so as that they must be incompatible in the same Subject . For the Conception we have of Justice is undoubtedly distinct from that we have of Mercy in GOD ; and yet no Divine can deny , but that they are both equally fit to be ascrib'd to GOD himself ; therefore it follows not , because the Conception of the Thing thinking , is distinguish'd from the Conception of the Thing Extended ; but that they may be attributed to one and the same Subject . VIII . An Answer to the Objection . I Answer , When two things may be conceiv'd incompleatly , or by abstraction of the Intellect inadequately conceiving the Matter , there is no necessity that they be repos'd in divers Subjects ; but those may well be which are consider'd adequately , or as Compleat Entities : For Justice and Mercy in GOD are consider'd not as two Compleat Things , since Justice may be understood without a Just Person ; but not Mercy without a Merciful Person : And consequently since they cannot be but modally distinguish'd , they may be both in One GOD. But we compleatly understand , that a Body or material Substance is Extense , Partible , Figurate , with an Exclusion of all those things which are peculiar to the Mind : And on the contrary we understand , that the Mind is a compleat Substance , which Perceives , Wills , Doubts , &c. tho' those things be remote from i● which belong to the Nature of Body ; and so Cogitation and Extension are incompatible in the same Subject . IX . A thing Cogitant . and a thing Extense , are conceiv'd in another manner , than Figure and Motion in the same Subject . Other Objections which may be made against the Incompatibility of Cogitation and Extension , are resolv'd in the same manner , as if any should say , that motion and figure , and the like modes of a thing Extended , have divers Conceptions , and yet are found in the same Subject . For figure and motion cannot be conceived , but in Extended matter ; For as motion is a Body ▪ having figure , so we cannot understand figure , but in Matter apt for motion . There is a great difference between Motion and Figure , and between a thing extended and cogitant ; for should all Moveable be taken away , we should have no longer any Idea of Figure or Motion remaining , since such is the Reason of Mode , that altho' Substances may be conceived without Modes , yet Modes cannot without Substances ; therefore in regard we might conceive a thing Cogitant , tho' there were no such thing as Body in rerum Natura ; it follows , that a thing Cogitant is really distinguish'd from a Subject Extense , and consequently is Material and Spiritual . X. The Spirituality of the Soul is demonstrated by its Operations . The same Conclusion may also be demonstrated à posteriori , to wit , by its Operations , which are Spiritual , and absolutely Independent of all Matter : For Volition and Intellect include no Extension , since we conceive both very well , without any mention made of Matter . Besides , we find by daily Experience , that the Cogitations of Man are render'd the more obscure , by how much the more he hath of commerce with the Body ; and on the contrary , more subtil and distinct , by how much the more he subtracts himself from the Body , as is manifest in Extasie and Rapture , where the Mind in a manner abstracted Meditates altogether on what is sublime , and distinctly sees all things ; all which would never happen , if the Soul were Material . For if the Power , for Examples sake , of Understanding , depended upon the Body , it would of necessity follow its Dispositions , that is , be depress'd when that is weakned , and become more vivacious , when that is vigorous and strong . Whereas we find by Experience the contrary thereof in Old men , who apprehend things more clearly and distinctly than Young men , who at the same time excell Old men in Strength of Body , and have their Animal Spirits more vivacious , upon which Corporeal motions depend . XI . The Apprehension of Spiritual things , shews the Mind to be Incorporeal . Then how can it be , if Human Mind be Material and Corporeal , that it should contain in it self such vast Images of things ? How should it comprehend the Latitude of the Earth , the Immensity of the Heavens , and the Bodies that are diffus'd through all parts of the Universe , if it be not Spiritual ? How can it discern a Line to be altogether void of Latitude ? A Point not discernable to the Eye , and wholly Individual ? Wherefore we must in this Matter conclude with the Words of St. AUGUSTINE , If Corporeal things are beheld with Corporeal Eyes , by a certain wonderful Affinity , it certainly follows that the Mind , by which we see Incorporeal things , is not Corporeal or Body . XII . The Cognition of Verity , &c. argues the Immateriality of the Soul. Moreover , who knows not how many and how great things totally separate from all Matter our Soul can conceive ? For without any help of the Senses , it apprehends Verity , Sapience , Unity , Beauty ; it understands the Principles of Sciences , and unfolds the Demonstrations drawn from them , and attends to the Series of Reasons ; but with what Sense , or with what Corporeal Species doth it represent these things to it self ? Wherefore since by Reason alone it performs all these things , it must of necessity be Immaterial and Incorporeal . Lastly , Many things which are divided in themselves , meet together in our Mind , as opposite and contradictory Propositions , &c. yet nevertheless the Soul is not increas'd by the reception , nor by the withdrawing of them . A thing which cannot happen to Body , which always become greater by the addition of Parts , and lesser by the abstraction of them . CHAP. III. How Human Mind is Vnited to the Body . I. Th●●e Notions which usually present themselves to us . THere are Three principal Notions which commonly offer themselves to us : The Notion of Body , which we have maintain'd , consists in Extension , from whence the Idea's of Figure and Motion proceed : The Notion of Mind , whose Essence we place in Cogitation , and to which the perceptions of Intellect , and propensions of Will do tend : The third Notion is of Soul and Body , as they are united ; from which Union we understand , that Mind hath the force of moving Body , and on the contrary , the Body hath the power of Acting upon the Mind , as shall hereafter be more clearly made out : For it is not to be imagin'd , that the Soul is only present with the Body , as a Mariner is present in his Ship , or as a Rider is seated upon his Horse ; but that it is intimately united to it , so as to make one Compound with it : I say , the Notion of Soul and Body ; because the Soul is properly so called , inasmuch as it is destin'd to Inform the Body , or inasmuch as it can be United to a well-disposed Body , as hath been formerly mention'd . II. Human Mind is to be consider'd , as United to the Body . For the Soul of Man is not to be consider'd as a Spirit in it self , and as it is Absolute and a Substance which Thinks ; but according to the Relation which a Spirit hath to a Body well dispos'd , and to which it is United . For Experience plainly teacheth us , That all the Functions of the Soul , consider'd in Quality of a Soul , depend absolutely on the Body , to which it is United , and which renders this Union altogether necessary . III. It is difficult to conceive , how the Soul is United to the Body . The only difficulty is to apprehend this sort of Union : For our Intellect can hardly conceive , how Body , which is a thing Extense , moves the Mind ; and Mind , which is a thing Immaterial and Inextense , can impel the Body ; and tho' by Experience we find it is so , yet no Comparison or Discourse drawn from other things is sufficient to demonstrate and evidence it to us . Those Philosophers who admit Real Accidents , and judge that they are Entities distinct from Substance , produce a Similitude of a Stone tending downward , by the force of Gravity . Now since , according to these Philosophers , this Quality of Grave things tending downwards , is not Substance , but Accident , this may serve for a sufficient Explication , how a thing not Extended , may act upon a Body Extended . IV. To this difficulty the Prejudices of Infancy , and the Opinions of a School conduce . Yet because we maintain , that there is no such Quality in Nature granted , another way is to be found out ; but before we fix upon a Mode , by which the Body is annex'd to the Soul , it will be worth our while to note , that all the difficulty in conceiving that Union , arises chiefly from our selves ; who following the Prejudices of our Infancy first , and afterwards the trite Opinions of Philosophy in Schools , have thought it impossible for Human Intellect to conceive , how a thing Material and Incorporeal can be United , and how a thing Unextended can be associated to a thing Extense , unless that be taken also for Extense . This Prejudice hath exercis'd the Wits of many ; and because they could find no Mode of Union , by which things so distant in Nature could be United , were compelled to have recourse to certain Virtual parts ; and to assert , that the Soul is not indeed really , but only virtually Extense , and that it hath Virtual parts , by means whereof it may the better be adjoyn'd to the Body , and so compose one Total with it . V. It cannot be said , that the Soul is virtually Extense . But what they mean by these Virtual parts , I confess I do not in the least understand , nor doth any Notion of them present it self to me . Nor can it be conceived , that there are things Virtually Extense , unless thereby are understood parts without parts , that is , whereof one is placed beyond the other . But parts situate one beyond the other , are distinguish'd not virtually , but really , and may separately Exist , and consequently may be said to be really distinguish'd ; since in the Conception of them Division is included , and a Separation of them one from another , which presuppose Extension . VI. Three sorts of Union . But that the Conjunction of Mind and Body , which is commonly call'd Union may be the better understood , we are to premise what Union is , and how many kinds of it there are . Union is a Consociation of things agreeable into One. And since we can have a Conception but of two things , namely Mind and Body , we can thence infer only a Threefold Union : The first , which intercedes between two Bodies ; the second , by which two Minds are associated ; the third and last , by which Mind and Body are United . But all Union includes some Similitude and Dependency , in which respect 2 different things pass after a certain manner into one . For in this very respect they are judged to be United , when they can act and suffer dependently upon each other : For 2 Bodies are said to be United , when they are so near , that one may act upon the other ; and that again suffer from the former . Not that it is necessary , that both together act and suffer at once ; but it is sufficient , if one act and the other suffer . In the same manner 2 Minds are united one with another , when the same Affections are common to them both , and are so dispos'd , that neither of them wills or loves any thing , but for the others sake . In the same manner we say , that a Rational Soul is joyn'd to the Body , when any Operations of the Body depend upon the Cogitations of the Mind ; and on the contrary , that the Body is joyned to the Soul , when any Cogitations arise dependently from these Operations , or rather motions of the said Body . VII . How Mind and Body are United . Nor do I think , that any one will deny this manner of Conjunction or Union , by which the Mind and Body are conjoyned , since a clearer cannot be made out ; in regard the Mind and Body operating dependently upon each other , we may very easily understand the Similitude and Relation , which ought to be among things which are united ; and this Similitude and Relation we have formerly affirm'd to consist in Action and Passion : So that as the Union of 2 Minds will continue so long as Love remains between them ; so the Union of 2 Bodies will never cease , so long as they are locally present one with another . In like manner the Union of Mind and Body will not be dissolv'd , so long as he who hath joyn'd them together shall suffer the Body to produce its motions , with a dependency upon the Cogitations of the Mind , and the Mind to Exercise its Cogitations dependently upon the motions of the Body . VIII . The Conjunction of the Mind with the Body , is twofold . By Two ways most especially may Spirit be joyned with Body ; first into one Person ; as the Word was made Flesh , S. John 1. Secondly , Into One Nature ; as Human Mind is joyned with Body . Of the first , Divines treat in their Theses , concerning the Incarnation of the Word ; the second is handled by Philosophers . IX . Wherein consists the Union of Soul and Body . The Union of Soul and Body consists in an Actual dependency of all the Cogitations of the Soul , upon certain motions of the Body ; and of some certain motions of the Body , upon some Cogitations of the Soul ; I said in the first place , That this Union consists in an Actual dependence ; because for the Uniting of Body and Soul , it suffices not that their Motions and Cogitations , can mutually depend upon each other ; but it is also necessary , that they Actually depend . In the second place , I said ; and of some certain motions of the Body , upon some Cogitations of the Mind ; because not all the motions of the Body depend upon the Cogitations of the Mind , since many depend upon the Machin of the Body only , and the Universal Laws of Nature . X. There is not requir'd any Union , as a thing distinct from Mind and Body . Others explicate this Commerce another way ; for they will have it , that a certain Mode intercedes between Body and Mind , to which they give the Name of Union , and account it instead of a Ligament or Bond , by which those things that make up the Compound are joyned one with another . For they cannot conceive how 2 Things can be joyn'd together , and nothing of New happen upon this Conjunction . But they have enough to be satisfied : For if by the Name of Union , they understand nothing , but that mutual Commerce of Actions and Passions , which is found in Mind and Body , they agree with us ; for we acknowledge that Union is the Mode of the Being of Body and Soul : For all things are after another mode or state when United , than when Separated . But if they mean , that this Union is some real thing distinct from both , and as it were that very thing , by the mediation whereof the parts of a Compound are United , we apprehend not , nor acknowledge any such thing in Philosophy ; and should we receive it , we can no way make it out , how such a thing can joyn together two such , as Mind and Body . For this Union should be either Extense , or void of all Extension : If they affirm it Extense , how can it be Co-extended with Mind , which is a Spirit and Immaterial ? If it be void of Extension , how can it be joyn'd to a Body ? So that this Mode of Uniting is altogether superfluous , since the difficulty of Conceiving how 2 Substances can be immediately United one with another , by a mutual dependence of their Motions and Cogitations is less , than to comprehend , how they should be united by another thing , which if it be Inextense , cannot be conjoyn'd to the Body ; nor to Mind , if it have Extension , and be divided according to parts . XI . But a Reciprocation of Action and Passion . And the Truth is , since neither Body can Think , nor Mind be capable of Dimension ; there can be no Mode common to Mind and Body , except a mutual Acting of each upon each , from which alone the Proprieties of both can follow . XII . Whether the Soul and Body be United to each other , before they mutually Act and Suffer . Perhaps it may be said That the Conjunction of Mind and Body cannot consist in the relation which the Actions and Passions of both have to each other ; because such a Concourse presupposes , that the Mind is already United to the Body . For the Mind must first be in the Body , before it can draw forth any Operations which depend upon the Body , and consequently Union precedes that mutual dependency . XIII . The Answer . I Answer , That there is no Necessity that the Mind should be first United to the Body , before it operate there , in regard its Existence precedes not Action in Time : So that it does not absolutely require to be joyned to the Body , before such time as it draws forth its Operations . Nay , if the Matter were well Examin'd , when as Spirit is confin'd to no Space , and may only be in a place by its Operations : It cannot therefore be said , to be in the Body , but because it exercises there its Operations or Cogitations dependently on the Body . Which mutual Correspondence constitutes the Reason of the Union , which is between the Mind and Body . XIV . When the Union between Mind and Body begins . But if it be ask'd , How comes about this Conjunction of Soul and Body , and when doth it begin ? I Answer again , It is most Consentaneous to Reason , to believe that this Union begins at that very moment in which the Body gives occasion to the Mind , to draw forth some Cogitation , and Contrarily the Soul to the Body , to stir up some motion . For as this Conjunction is plac'd in a mutual Dependency , which is between both , in respect of certain Actions and Passions , it cannot begin sooner : So that it is most probable , that such a Union begins , as soon as the Heart , Brain , Nerves , Muscles , &c. are sufficiently fram'd to bring it about , that the Action of the Objects may be transmitted as far as the Glandula and the Animal Spirits be convey'd into the Muscles . On the contrary , this Union ceaseth , whenever it happens that the said Commerce cannot be continued , or when any part of the Body is so defective , that the Heart is no longer able to transfuse the Spirits to the Brain ; nor the Brain into its Muscles , to agitate some , and conserve others in their proper state : So that the said Confederacy is never broken on the part of the Mind , but of the Body . XV. This Union is Essential to Man. From these things we deduce , that the Conjunction of Soul and Body , though it be call'd an Accident of either part , so far as it may be present or absent , without the destruction of either part , is nevertheless so proper to both Parts of Man together , that it may and ought to be allow'd to be Essential to him : For Essence , as it is deriv'd from Esse , to be , is so called , because so long as it is something , it must of necessity be . So that so long as Man is , it follows , that the foresaid Efficacy of Mind upon Body , and of Body upon Mind , must needs be . XVI . Why GOD may not be said to be joyn'd to his Creatures , or an Angel to an assumed Body . But it is also easie to Understand , why GOD , tho' he is present to all Created things , as who Conserves the same by a Continued Creation ; yet nevertheless is not said to be conjoyned to them , in regard they cannot act upon GOD , by exciting in him those Cogitations which he had not before . So also an Angel , who according to the Vulgar Opinion , is present personally an assumed Body , cannot be said to be joyned to the said Body . For tho' an Angel may act upon such a Body , yet that Body cannot Re-act upon the Angel ; So as that when the said Body , for Examples sake , is hurt , the Angel should feel pain , as we find by Experience in our selves . XVII . Conditions of the Union of Body and Soul. But as there is no Society , which is not founded upon some Conditions , which are Reciprocal between one and the other party , united or associated together : GOD , in the formation of Man , united Body and Spirit upon these Conditions . XVIII . The First Condition ▪ The First is , That as long as the Soul shall remain United to the Body , there will be an Idea of Extension , that is to say , of Body , consider'd in it self ; and that it shall have this Idea from the motion of the Brain , excited by the general Course of the Animal Spirits ; according to which condition , the Soul hath always present the Idea of Extension , as Experience teacheth us . XIX . The Second , The Second is , That the whole motion of the Brain , which is excited by the Nerves , will produce within the Soul a certain Sensation , which will always accompany this motion , and the Soul not be able to separate it . By means of this Condition , we fee , for Example , the Light , when the Sun moves the Optick Nerves : We hear Noise , when resounding Bodies shake the Auditive Nerves . XX. The Third . The Third , That the Spirit , so long as it remains United to the Body , will have the Idea of some particular Body , from the motion which this Body shall excite in the Brain , by the means of the Organs of Sense . By this Condition , the Soul hath the Idea of all Bodies , which smite the Senses . XXI . The Fourth . The Fourth , That the whole motion of the Brain , which shall be excited by the determinate Course of the Animal Spirits , resembling another motion , caused by the Nerves , will produce in the Soul the Idea of some particular Body , which the Soul hath already perceiv'd . By this Condition it is , that there are represented to us things absent , which we have formerly seen . XXII . The Fifth . The Fifth is , That by the Sense of Touching we feel pleasure or pain , according as the movents , which cause these Sensations , shall be conformable or in opposition to the Natural Constitution of the Body . By this Condition , the motion of a Feather drawn over the Hand , as it were for Titillation , will cause a Sentiment of pain in Sick People , in regard the said motion is not agreeable to the present state of the Body . On the contrary , it excites a Sentiment of pleasure to those that are in health , because in that Estate it is conformable to the present Constitution of the Body . XXIII . The Sixth . The Sixth is , That when we have received the Idea of an Object , it will be attended by an Inclination of the Soul , which will carry it either to fly or to pursue the said Object , according as it shall appear good or bad . By this Condition it is that we are sensible of Love , Hatred , and generally all Passions that attend the Soul. XXIV . The Seventh . The Seventh is , That all the Thoughts of the Soul , which regard the preservation of the Body , as they create Sentiments and Passions , must be accompanied with that motion of the Animal Spirits , which shall be most proper for the Execution of the Desires of the Soul. And it is upon this Condition that Fear , for Example , is accompanied with a Course of Animal Spirits , which induceth us to shun what we fear ; and that on the contrary , Desire is accompanied with a Course of Spirits , which carries us to the pursuit of that which we desire . XXV . The Eighth . The Eighth is , That the Spirit , inasmuch as it is united with the Body , never Thinks , but by the motions of the Body , to which it is united . And it is by this Condition , that all the Idea's which we have of particular Bodies , depend mediately or immediately , upon some motion of the Brain . I say , All the Idea's we have of particular Bodies : And hereby we are to Note , that the Idea's which the Spirit hath of GOD , and of it self , depend not at all upon its being United with the Body ; but simply upon its being a Spirit , whose whole Nature is to Think , and by consequence to think of GOD and of it self . XXVI . The Ninth . The Ninth is , that when the Animal Spirits are more abounding than usual , they excite in the Soul , Goodness and Liberality ; when their Parts are more strong and gross , they excite Confidence and Hardiness ; when they are equal in force , in grossness and in figure , they procure Constancy ; when they are more agitated , they produce promptitude , diligence , and desire . In fine , when they have a temperate agitation , they cause tranquility of Spirit . On the contrary , when these Qualities fail in the Animal Spirits , or when there is an opposite Temper in them , the effects that are produc'd in the Soul , are Malignity , Timidity , or Fearfulness ; Inconstancy , Tardiness , Inquietude , &c. XXVII . The Tenth . The Tenth and last Condition is , That the Union of Spirit and Body will continue so long as the Heart shall be in a condition to send Blood towards the Brain , and from thence to send the Animal Spirits through the Nerves into the Muscles , which are subservient to those motions that are necessary for Life . By this Condition it is , that the Soul never gives occasion to the Body to break the Union , it being sufficiently evident that the default always proceeds from the Body , as Experience teaches us . CHAP. IV. Whether there are Innate or Inbred Idea's in Human Mind . I. There are three sorts of Idea's . IT is a frequent and common Disquisition in the Schools , whether Human Mind be pure Potentia , or Power , and so abstracted from the Species or Idea of things , as to have no inbred Cogitations in it . The Aristotelians maintain the Affirmative , and are of Opinion , that that Faculty of Perception which we experiment in our selves , is , when first the Mind begins to exist , as it were a Rasa Tabula , or plain Table : So that whatsoever Idea , in process of time , is deprehended in it , is drawn from the Senses , or acquir'd by Tradition . So that for the better Solution of this famous Question , we are first to know what an Idea is , and how many Acceptations it admits of . By the Name of Idea , nothing else is understood , but the thing it self thought , so far as it hath any thing Objective in the Intellect . Or more in short , Whatsoever can be conversant in our Cogitation : And there are Three kinds of it , namely , Adventitious ; or those which are receiv'd from things transmitted by the Senses ; as is that Idea which we have of the Sun , Stars , and the like External Objects . Secondly , Fictitious , or which are formed from our Intellect ; as the Idea's we have of a Chimaera , Syrens , &c. Lastly , Innate , which are Created with the Faculty of Thinking and forming them : And they are called Innate , in the same manner as we speak of the Stone , or the Gout , to be Natural to some Families , of which Families they who are born , bring with them into the World a disposition prone to those Diseases . II. The Idea's of Qualities are Congenite or Equally born with the Soul it self . These things thus briefly noted , we are next to enquire , Whether Human Mind be so Created , as to have these sort of inbred Idea's born with it , and not drawn from any of the Senses ; and in Truth , it seems not to be deny'd , but that many such Idea's are found therein . For to begin from things most obvious , it is most certain , that the Idea's which we perceive by any sense , are inbred , and can no way proceed from the Things themselves by any Similitude . For he that well understands , by what way the perception of Pain , for Example , is excited in the Soul , will easily be convinc'd , that the Idea of Pain hath no more affinity with that perverse disposition of Parts , by whose means the Soul frames an Idea of Pain , than that deprav'd Affection hath an affinity with a Sword , by which a Wound hath been inflicted into a Body ; or than the unwonted agitation of Blood or Spirits , by whose impulse Human Mind conceives Idea's of Passions , carries a Similitude with those Images or Cogitations ; and consequently when the Sense of Pain , and other Perceptions which are produc'd by the motions of the Spirits , are excited in the Minds by no other Species , which have affinity with them , it must needs be affirm'd , that these sort of Idea's which have no affinity , are innate or inbred to it . For it is evident , that all the Perceptions of the Senses are obscure and confus'd , insomuch that Light , Colours , Sounds , Odours , Sapours , Heat and Cold , and other tactile Qualities , are not apprehended by us , but by a confus'd way , and not under the Conception of Motion : And hereupon we must conclude , that their Idea's are innate in us , and that it is from our Nature that we understand them . III. The Idea's of Mathematical Figures , are implanted into the Mind , from their first Original This takes place not only in Qualities , whereof we acknowledge our Cogitation to be confus'd ; but also in things most clear and manifest . For what can be more clear , than that when a Line , a Triangle , a Rhombus , or other Mathematical Figures are given , it is not to be attributed to our Senses , that we have the Idea's of them ? Since most certain it is that there is no absolute true Right Line in Nature , nor any Triangle whose 3 Angles are perfectly Equal to two Right Angles . Since therefore the Idea's of Figures proceed not from the Senses , and contain nothing Corporeal or of Corporeal Affection , we must necessarily conclude , that they are implanted in Human Mind ; that is , that a Faculty is given by GOD to the said Mind , to produce such like Forms of Conceptions , and that they are not form'd according to any Exemplar of things without . IV. It is a false Maxim , that there is nothing in the Intellect , which was not first in the Sense . If any one Object , That trite Saying of the ARISTOTELIANS in the Schools , viz. that there is nothing in the Intellect , which was not first in the Senses . I answer , that that Vulgar Axiom is altogether false , and only to be admitted by those who do not sufficiently consider by what Motives the Soul is excited to perceive External things . For whoever will seriously examin , how far our Senses extend themselves , and what it is precisely that can arrive from them to our Faculty of Thinking , must needs grant , that no Idea's of things are presented from them to us , such as we form them in our thought ; so that there is nothing in our Idea's which was not first inbred in our Mind or Cogitant Faculty , excepting those circumstances which regard experience , so as to judge , that such or such Idea's as are now present to our Cogitation , are to be referred to things without us : not that the said Idea's have immitted those very things to our Mind through the Organs of our Senses , but because they have immitted something which gave it occasion to form those very things by a faculty innate to it , at one time rather than another ; forasmuch as nothing hath access to our Mind from external Objects , through the Organs of our Senses , except certain Corporeal Motions ; but neither those Motions , nor the Figures arising from them , are conceived by us , such as they are form'd in the Organs of the Senses ; whence it follows that those very Idea's of Motions and Figures are inbred in us . And so much the more ought the Idea's of Pain , Colours , Sounds , and the like , to be innate , as our Mind , by means of certain Corporeal Motions , can exhibit them to us ; since they have no similitude with Corporeal Motions . V. It is by Nature that we understand what is Thing , Substance and other general Axioms . Besides , who can have the confidence to assert , that the Idea's we have of Thing , Substance , Truth , Goodness , Equity , and the like general Natures , have any commerce with Material Things , and that the Idea's , which we form of them , flow'd out of Bodies , through the Senses , into the Mind ? Who will be so positive as to affirm that these Common Notions , for Examples sake , The same thing cannot be and not be ; that which is done cannot be undone ; those things which agree in a third , agree among themselves ; take equals from equals , and there remain equals ; and the like , proceed from the Senses and from things without us ? What can be more absurd , than that all common Notions , which are in our Mind , arise from the said Motions , and cannot be without them ? I would fain have any one tell me , what that Corporeal Motion should be , which can form any common Notion in our Mind ; since all those motions are particular ; but these Notions are universal , and have no affinity or relation to the said motions . Since therefore nothing can come into our Mind from Bodies but by motion ; it is not to be doubted , but that those Idea's , at least , which have no affinity with motion ; are Congenite and Inbred with the said Mind , from their Original . Hence St. Augustin in his 9 th Book de Trinitate , The Mind , saith he , knows it self by it self ; and in another place , It is known for a certain , that the Mind can never be so affected , as not to remember , not to understand and love it self , though it should not be always thinking . VI. The Idea of God is inbred in Human Mind . The same thing also evidently appears in that Idea which Human Mind hath of the Existence of GOD ; forasmuch as it forms the said Idea , not by the Benefit of the Senses ; not by Human Institution ; not by its own Arbitrement : And consequently it must needs be innate or inbred in it , since there is nothing else in Nature to be found , which can set set forth an Ens Infinite , Omnipotent , Immense , Supreamly Good and Perfect ; for though there is in us , in regard we are Substances , an Idea of Substance ; yet there occurs not to us from thence an Idea of a Substance , Infinite , Independent and Supreamly Intelligent , &c. since we are finite ; and so , whatever Idea we have of GOD , must needs have it from a Substance which is Infinite , that is , GOD , and consequently which immediately proceeds from him . VII . Whether an Idea of God can be had from the Observations of things . If it be urg'd , ●●at this Idea of GOD which we experiment in us , proceeds not from our faculty of thinking , to which it is innate , but from Divine Revelation , Tradition or Observation of things ; for in an Entity supreamly perfect , which is call'd GOD , Human Mind considers nothing but those perfections which are found in Man ; for Examples sake , Existence , Power , Justice , Mercy , and the like ▪ from which , if imperfection be removed , they may be so ascribed to GOD , the most Excellent of Beings . VIII . The Difficulty remov'd . This Objection is resolved by our most illustrious Philosopher , in his Answer to the fam'd REGIUS , Physician of Utrecht ; by giving to understand , that one thing may be from another two ways ; either because this other thing is the proximate and primary Cause thereof , or because it is remote , and only accidental , and so gives occasion to the Primary Cause to produce its effect at one time rather than another : As all Artific●rs and Workmen are the primary and proximate Causes of their own Operations ; but they who set them on work , and pay them for their labour , are the accidentary and remote Causes of the said performances , which perhaps , the Workmen unbidden , and without hopes of reward , would scarce have gone about . Now there is no doubt but Tradition , or the Observation of things is often times the remote Cause which inviteth us to give attention to that Idea which we are able to conceive of GOD ; and to represent it to our Cogitation . But that it is the proximate and efficient Cause of the said Idea , cannot be asserted by any one , except by him who judges that nothing is ever understood by us concerning GOD , but what the name DEUS or GOD means , or what sort of Corporeal Figure it is , which is made use of by Painters to represent GOD. Forasmuch as Observation , if it be made by the Sight , represents nothing to the Mind by its own proper vertue , but Pictures , and those only consisting of certain Corporeal Motions ; if by hearing , nothing but Words and Voices ; if by other Senses , nothing is contain'd in the said Observation which can possibly relate to GOD : So that all those things we think of , except Voices and Pictures , as their significates , are represented to us by Idea's , not coming from elsewhere than from our faculty of thinking , and consequently inbred in us . CHAP. V. Of the Faculties of Human Mind , Intellect , Imagination , Will , Memory , Reminiscence and Wit. Book . 1. Part. 9. Chap. 5. G. Freman In. I. Kip Sculp . To the Right Honourable Iohn Sheffeild , Baron of Botterwick , Earle of Mulgrave , Ld. Chamberlaine to King Iames the 2 d , Lord Lievtenant of the East-Rideing of Yorkshire , vice Admirall of Yorkshire Northumberland , and Bishoprick of Durham , Kt. of the most noble order of the Garter , & one of his Ma t ys . most Honourable Privy Councell &c. a. This Plate is humbly Dedicated by Richard Blome . II. What Intellect is . By the word Intellect , nothing else is to be understood , but that faculty by which the Mind , without any Material Species , apprehends all Objects whatsoever , whether Immaterial or Corporeal ; and this faculty is more inseparable from the Mind than any of the rest ; whereof there is not any one that hath not some dependence upon the Body ; whereas the Mind hath no need of the help of any other thing to understand by , but it self and its own proper Idea's . So that the Mind hath no need of any Organs , nor makes any use of the Brain , whereby to Conceive or Understand External things . III. How it is distinguisht from Imagination . Only in this one thing , Intellect is distinguisht from Imagination , that is , that the Mind can Imagin nothing but Corporeal , when in Imagining it applies it self to the Body , and contemplates the Image of the Object as present to the Eye , which happens not in Intellection or understanding ; when as the Mind , in Understanding , is in a sort recluded or shut up within its self ; and if it apply it self to any External Body , it is only to contemplate the Idea of the Object which it hath in its self . Wherefore that common Saying , Nothing is in the Intellect , which was not first in the Sense , is not to be conceived of the pure saculty of Understanding . Since the pure Intellection , as we have said , as well of a Material as Immaterial Object , is independent of any Corporeal Species , and cannot any way be received in the Intellect ; but may very well be understood of the Imagination , because we cannot possibly imagin any thing but what is Corporeal , particular and determinate . Whence the Power of Imagining in the Soul may be defin'd , The Power which the Soul hath to know particular Bodies , and the representations of Equality or Inequality which are in them . So that Intellect and Imagination differ in respect of the Object ; since the Object of the Intellect is of larger extent than the Object of Imagination , as having a perception , not only of things which belong to Intelligences , and Substances meerly Spiritual ; but also many other proprieties , or particular Bodies , which are not deprehended from the Senses , and which decline even Imagination it self , as hath been said in the foregoing Chapter . IV. The definition of Intellect . Whence we may conclude , that Intellect in general is nothing but a Faculty or Power which the Soul hath to know whatsoever it knows , by what way or manner soever it knows it . V. What Will is , and how it differs from Intellect . The second sort of our Cogitations proceeds from the Will , that is , from a Power within us , to determin our Resolves , by giving or denying our Assent in things which are propounded by the Intellect . For such is the form in the ordering of our Cogitations , that the Light of our Understanding , always precedes the Actions of our Will ; in regard the Intellect is , as it were , the Torch , without which our Will cannot determin any thing . When , I say , that Will cannot determin any thing , but what the Intellect shews it ; it is not to be so taken , as if those two Powers were things distinct from each other , but that it is one and the same Mind which is diversly considered according as it Perceives or Wills , and according as it Suffers or Acts ; so as that Knowledge , Pleasure and all other Faculties of the Soul , are but one and the same Soul , considered as having power to Know , to Will , to Imagin , to Perceive : For the Intellect is a passive Power , which consists in this , that it wholly receives Idea's ; whereas the Will is a faculty by which the Mind chooses , or is determin'd to embrace or decline all that which the Intellect clearly perceives ; so that the Will is nothing but the free determination of the Mind to do any thing , or not to do the said thing , to affirm or deny a thing to be such or such . VI. The definition of Will. And consequently Will in general may be defin'd , a power which the Soul hath to determin and resolve about those things which it apprehends , which way soever it apprehends them . VII . The Essence of Will consists not in Indifference . For this is the Nature of Will , that at the same time wherein True or False , Good or Bad is , by the Intellect , propos'd to it clearly and without confusion , it resolves , without any hesitation , to choose the one and reject the other ; so that the Essence of it consists not , as some will have it , in Indifference to choose any thing , or not to choose it , since Will can never be said to be indifferent , except when the Object is not clearly and distinctly propos'd to it , or when it knows not what it ought to resolve upon . For a Man is said to be indifferent , when few Reasons are propos'd to him , or such as are not sufficient to move him , to embrace one thing rather than another : whence it is said of a Sinner , that always some things are found indifferent in him ; namely , a Sinner knows not clearly the Bad he is about to commit ; or if he formerly knew it , he attends not , at the time he commits it , to the reasons which prove it to be bad ; for if he perceiv'd it , it could not be that he should sin , according to that vulgar Axiom , The Will pursues no Evil as it is Evil. VIII . But in Determination . On the contrary , when a man sees a thing clearly , and without all obscurity to be convenient for him , it is almost impossible but that he should be carried with an inclination to it , so long as the judgment of the self same thing remains in the same person . So that Will , infallibly tends toward that which appears most convenient for it , so it be made clear and manifest to him . Nor is there less reason why it should be called Free , since as DESCARTES saith , in his fourth Meditation , Neither is it necessary that I should be carried into both parts , to be free ; but by how much the more I incline to one part● either because I perceive True and Good more evidently in that , or because GOD so inwardly disposes my thought , so much the more freely I choose that . Neither indeed doth Divine Grace , or Natural Cognition ever diminish Liberty , but rather increase and confirm it . But that indifference which I experiment , since no reason impells me to one part more than another , is the Lowest degree of Liberty , and witnesses no perfection therein , but only a defect , or a certain negation in Cognition . For if I could always see what is True and Good , I should never make any doubt , what is to be judged of it , or chosen out of it ; so though I might be absolutely free , yet never indifferent . IX . Memory , and in what it consists . By the name of Memory , so far as can be collected from the descriptions of other faculties , is understood the Power which the Soul hath to conceive , feel or imagin , that which it hath already conceiv'd , felt or imagin'd : And on the part of the Body , a certain facility which the Pores of the Ventricles of the Brain , which had before been relaxt by the Animal Spirits , have to open themselves again . For if we consider the Nature of those Species which are preserv'd in the Memory , we shall find that they are nothing but certain Vestigia or Footsteps which the Agitation and Course of the Spirits leave among the Fibres of the Brain , almost in the same manner , as folds in a complicated leaf of Paper retain a faculty of entertaining again those forms which had been before imprest upon them ; in regard that when the Spirits have a power of dilating the Pores of the Brain , of pleating , and variously disposing of the Filaments , through which they pass , according to the various motions in which they are carried , it comes to pass that the Pores have a certain power of drawing and directing the Spirits , so that at length they pass out through the same intervals , and in the same manner as formerly they went out ; and so the said Spirits finding out those Pores , enter more easily into them than others ; whence it happens that a man remembers any thing , when the said thing , having been formerly observ'd by him , hath left certain Vestigia in the Brain , by occasion whereof the said thing comes in mind . X. How we come to be able sometimes to repeat a whole Oration . Whence no wonder , if , upon hearing a Narration , or reading an Oration , which we have committed to memory , we are able afterwards to repeat the same , and that in the same manner as we heard or read it ; because , as upon making of folds in Paper , the first fold being made , the rest constituted in the same series easily follow , as having regard to the said series . So that whatever Vestigium is first made in the Brain , the rest which have respect to that series , easily follow . XI . How we come to remember those things which we had forgot . In like manner we remember things which we have forgotten , when we recollect a certain distinct Vestigium in the Brain , according as it occurs in the same series ; from whence beginning to deduce and unwind the series , we proceed so far , till at length we discover that which , while hid , we enquir'd into . As in Paper , not meeting easily with some certain fold , we choose out some other distinct fold , occurring in the same series , from whence a deduction being begun , the fold which they hid is at length discovered . XII . What things help Memory in the Brain . All Species which help the Memory , are especially in the Glandule ( which we have formerly declar'd to reside in the midst of the Brain ) in regard that it is the principal Seat of the Soul ; though other parts of the Brain are also sometimes inservient to Memory ; nay , even the Nerves likewise and Muscles , as is observable in a Minstrel or Musitian , who hath something of Memory at his Fingers ends , since his dexterity in the moving of them , and shifting them up and down , which he hath acquir'd by long use , helps his Memory to the finding out of those places , to the smiting whereof he is disposed ; and for the same reason the Idea's of two things occur in the Mind , if they were both imprest together : For upon the beholding of any ones Countenance , immediately there occur , at one and the same time , Eyes , Nose , Forehead , Lips , &c. in regard when we beheld his Face , all those things appeared . Hence they who have once tasted of any Meat , wherein they have observed any thing that might hurt the Eyes , can never remember the said Meat , but that also will occur , that it offended the Sight . Neither can they endure to hear any other person speaking of such sort of Meat , but they will be affected with the same aversion ; the cause whereof is , that the Animal Spirits excite the same motion in the Glandule , which they excited , when they first beheld the Meat . XIII . What Reminiscence is , and what it adds above the Memory . Reminiscence is an addition of something above Memory ; for it is not enough to remember that the species of a thing is simply objected , but it is also necessary , that when it occurs to us the second time , we take notice , that it therefore so happens , because it had been presented to our view before ; for indeed Reminiscence is nothing but the Resumption , by present Memory , of Cognition first had , and then afterwards Obliterated ; and much of the like Nature is the inquiry and recovery of the Knowlegde of a Man whom we had forgot by reason of the present memory of Places , Plays , and the like ; and consequently there is required to reminiscence , that the Images of things be partly obliterated , partly not : For we are then said to reminisce , when , from the Footsteps of the Images which remain , we recollect something of those which were slipt from our Mind . Wherefore the whole difference which is between Memory and Reminiscence , consists only in this , that to Memory it suffices , if any species return upon the Glandule , and that species be received without any reflection : But to Reminiscence , besides that reception of the thing , it is required , that the return thereof be known to us , and that we may have knowledge , that we had it , or perceived it before . XIV . Conscience is included in all Knowledge . From what hath been said , may be easily collected , that Conscience , or Self-knowledge is involved in all Human Knowledge , and is inseparable from it ; for Conscience is so manifest and intrinsecal to the Mind , that it cannot be abstracted from it ; but upon that very account , it may be affirmed to be destitute of Sense and Knowledge , properly so called ; for that which acts and suffers , and yet knows not that it acts or suffers , may be justly said to want sense in the said action or passion ; as is clearly demonstrated in those who being wholly intent upon any thing , or being moved with anger , perceive not ; for examples sake , the sound of a Bell , or any thing presented to the sight , and consequently neither are sensible of , nor acknowledge any of those things . From whence it appears , that Conscience is a certain Species of Cogitation , namely that immanent or inhering action of a thinking substance , by which it knows that it hath a real Cognition or perception of any thing . Forasmuch as Conscience seems to be no other thing but the mind indued with knowledge , as well of it self , as of its own Cogitation : whence CICERO in the 3 d. Book of his Offices ; When , saith he , a Matter is to be propos'd to a person sworn , he is to remember that he hath GOD for a witness of what is said to him ; that is to say , according to my Judgment , his own Mind . Whence it follows that we are convinced by Conscience , as by a clear and distinct Knowledge . XV. Even in false Judgments . Nor is it against our assertion , to say that the Mind is able to form various Judgments , even tho' false , concerning its own perception , and intellection ; because the Mind is never deceived in this , namely , that it should know or understand , at that time when it thinks that it knows and comprehends . In regard this Perception or Cogitation is always perfected by the Mind in the Mind , and therefore it cannot be , that when I think that I receive any thing with my Ears , I should not have such a perception ; nay though it were possible , and should often happen that I should not hear at all , and the Organ of hearing should not be affected with any thing , so long that I think that it is affected ; as we find it falls out in our Dreams : So that in all Cognition , two things chiefly are to be observed ; the first is Conscience , which is that Animadversion whereby we mark , or take notice of any thing ; the other is that which is said to be Animadverted or observed , and is all that which is immediately apprehended by the Mind , and which in the first and second part of this Institution we have often call'd Idea . XVI . What Wit is . Now since the Indowments of Wit have also regard to the Soul , it may be here inquired , what Wit is , and whence so great a diversity of Wits arises , and why some men are more propense to certain Studies , and certain peculiar managements of Life than others . As to the first , some so describe Wit , as to call it a power implanted in man to understand , act and govern himself and others , to be approved in Vertues , or commit Vices ; in all which generally one man very much excels another . In fine , Wit seems scarce to differ from Ingenuity or Aptness , and thereupon it may probably be said that it chiefly depends upon the Organs of the Body , and the disposition and contexture of the Fibres . XVII . Whence arises the Diversity of Wits As to the second , concerning the Variety of Wits , It can by no means or possibility be imputed to the diversity of Souls ; for in regard all Souls are Intellectual and Incorporeal , and own no Author but GOD alone , they seem , according to Nature , to be altogether equal , ( unless GOD for some certain ends should design to produce some more perfect than others ) and then all the inequality which is deprehended in them , must proceed from the variety of the Organs , and especially of the Brain : We understand not human reason pure and abstracted from the Body , but the same so far as it is perfected or hindred , in any manner , by the disposition of the Body . XVIII . What are the Indowments of Wit. So DES CARTES in the begining of his Dissertation , concerning the method of rightly using Reason , reckons up three qualities of Wit ; Celerity of Thinking , Facility of distinctly Imagining , and Capacity and use of Memory : Nor does he acknowledge , that he knows any other qualities different from these , by which Wit can be rendred more excellent . But right Reason or a good Mind , that is , a Power of judging incorruptly and discerning true from false , he concludes to be equal in all , and distinguishes it from Wit. XIX . Celerity of Thinking depends upon the Spirits . Now whence should the Celerity of Thinking proceed , but from the agility and promptitude of the Spirits ? for we see Men frequently after a chirping cup of Wine , to become more chearful ; and indued as it were , with a new faculty of Thinking ; whence that trite Adage , with litle variation from Horace , Rich Wines make even Fools Philosophers . On the contrary , we see others of an acute Understanding and Sagacity of Wit , upon taking a Cup too much ▪ or upon the Brain being ill affected , by never so small an indisposition , to become Heavy , Dull and Stupid , and very much unlike themselves , as to what they appear at other times , which certainly argues that the Celerity of Thinking , depends much upon the disposition of the Body , and that the inequality of the Operations proceeds from the inequality of the Organs . XX. The facility of distinctly Imagining , and capacity of Memory ariseth from the disposition of the Body . In like manner the Facility of distinctly Imagining , and the capacity of Memory having regard to the internal Sense , are acquired chiefly by use , and rendred familiar by long habit and custom ; whence we find by experience , that not all Men are carried with the like proclivity to certain kinds of Studies , but that as in some Men there is one sort of ingenuity , in others another : So there is a various promptitude to attain to Sciences ; for they that are prevalent in Imagination , are very comprehensive of Mathematical Demonstrations , but have not happy success in Metaphysicial Speculations ; which happens not for want of Ratiocination ; but because in Mathematicks Imagination only , not Ratiocination is made use of . So DES CARTES Part 2. Epist. 33. That part of Wit , namely Imagination , which is chiefly conducible in Mathematicks , burts more than profits in Metaphysical Speculations . The diversity therefore of Wits ariseth from the constitution of the Organs , and from the temperament of the Brain and Spirits ; which disposition , nevertheless , in regard it varies infinite ways ; no wonder some Genous's are most inclined to Philosophy , others follow Mathematicks , others Musick . &c. CHAP. VI. Of the Affections or Passions of the Mind . I. That the Passions of the Soul are distinguisht from the Senses . HAving treated apart of the Nature of the Body and Soul , and distinguisht the Functions of both , it remains that we say something of the Passions which are peculiar to Man , to whom nevertheless they are no otherwise Attributed , but as he consists of Body and Soul ; for those Affections and Operations being neither belonging to the Mind alone , nor to the Body alone , proceed meerly from the Union and confederacy of Mind and Body ; such as are the Passions , which are called Affections and Commotions of the Mind ; because it is the Mind , which they principally shake and divers ways impel and disturb : For tho' the Senses depend also upon the said Union of Body and Soul , yet they gently insinuate themselves into the Mind , and relate not so much to the Soul as to External Objects , by which also they may be deceived and drawn into an Error ; but the Affections of the Soul are inward , and so adhere to it , that it cannot have experience of them any other way but as they are ; whence it comes that they who are in a deep Sleep , seem to behold certain things with open Eyes , and to suffer those things in the Body which no way touch us : Yet nevertheless , it can be no way brought to pass , that we should feel our selves sad or deeply in Love , but that there must be really such a commotion in us , and that we are affected not with a Feigned , but Genuin Love or Sadness . II. The definition of Passion . Wherefore the Passions of the Soul are thus best desined : The Perceptions , or Senses , or commotions of the Soul , which are referr'd especially to it , and which are produc'd , conserved and corroborated by a certain motion of the Spirits . They are first called Perceptions , because that name is common to all Cogitations ; and we use it to signifie all Cogitations , which are produc'd without the Concourse of the Will , and which are excited by impressions lest in the Brain ; for whatsoever is not Action , ought to be called Passion . III. Each part of the definition explicated . Next , they are called Senses , because they come to the Soul after the manner of Senses , and are of the number of those Cognitions , which by that streight bond that is between Soul and Body are rendred confused : But by a special term they are called Commotions of the Soul , in regard we are taught by our own experience ; that no Cogitations enter into our Soul , which so much disturb and move it as those do . It is moreover added , that they are especially referr'd to the Soul , to distinguish them which come from exteriour Objects , or arise from interiour dispositions of the Body , as the preceptions of Colours , Odours , Sounds , &c. which are referred to External Objects ; Hunger , Thirst , Pain which are referred to our Body . IV. Passions depend upon the concourse of the Spirits . Lastly , it is concluded that those Passions are produc'd , Nourisht and Corroborated , by a certain peculiar motion of the Spirits ; to distinguish them from the proper Acts of our Will , which indeed may be called the commotions of the Soul , and also such as may be referr'd to the Soul , but which are not produc'd from the Spirits , but from the Soul it self . Whereas , in the Passions the Animal Spirits proceeding from the Heart , are carried into the Brain ; and from their commotions ariseth the perturbation of the Soul , and being risen is conserv'd , so long as the Animal Spirits passing the same way , agitate the Mind by the same reason ; and upon their increase , the commotion of the Mind may so increase as to be excited by them , not only to judge , but vehemently to desire , and sometime to grow Mad. V. How Human Passions are distinguisht from the Affections of a separate Soul or Angel. Whence the Passions which are incident to Man , as he is composed of Soul and Body , are distinguisht from those which are belonging to a Separate Soul , or Angel ; for there is no doubt , but that a Soul dislodg'd from the Body is toucht with various Affections , and is lyable to divers kinds of Motions : For seeing it hath a clear and distinct knowledge of things , it may also have motions attending the said Cognition ; and so long as in those things it deprehends good or evil , it may refer them to it self , and consequently prosecute them with Love or Hatred : For if it obtain that good which it hath judged convenient for it self , there cannot but arise much Joy thereupon ; but if it find it self deprived thereof , Sadness will follow : Yet those Passions differ from ours , because they are not joind with the motions of the Animal Spirits , which excite and conserve them in us . Nay , they arise in them by a clear and distinct Cognition which they have , of the thing which they look upon and behold as their good . VI. Affections are call'd Passions in respect of the Soul , Actions in respect of the Body . But lest for the future any difficulty should arise about the word Passions , we assert that Actions and Passions in Intellectual and Cogitative things , are no other than what they are in Corporeal things ; for as in a Material thing , Action and Passion consist in Local motion , being called Action when the motion is conceived to be in the Movent , and Passion , when it is considered to be in the thing moved ; so in Incorporeals , Action is said to be , that which holds on the Movers side , as Volition in the Soul : Passion is that which keeps on the part of the thing moved , as Intellection and Vision in the same Soul. So the Affections which we take upon us here to describe , are called Passions in respect of the Soul to which they belong ; but Actions in respect of the Body , which Acts immediately upon the Soul , and in its Actings effects mutation and variety . VII . Passions ought to move the Soul. But because in Man there are found various Passions , and those Passions obtain several Names , according to the diversity of Agents : We say , those Passions are only considered by us , which proceed from some particular Agitation of the Spirits , and whose effects are as it were felt in the Soul ; for tho' other impressions , which are formed in the Brain by External Objects ; or which depend upon the Footsteps of former impressions left in the Brain ; or which by the ordinary course of the Animal Spirits , are presented to us Sleeping or Waking , may be called Passions ; that is , so far as they are excited in the Soul without the concurrence of the Will : Yet to speak properly , they are not so much to be called Passions , as Habits , or Propensions which dispose to some Passion , since they move not the Soul , nor depend , or are cherisht by any special course of the Animal Spirits . VIII . Thevario●s causes of Affections . First Temperament . Although the Agitation of the Spirits , may be called the proximate cause of our Affections , yet there are other remoter causes , which may be assigned , as the Temperament of our Body , which conduces not a little to the exciting of Passions in the Brain ; since it is in the stead of Disposition , and after a sort impells the Soul to follow its propensions : Hence , those who have their Body any way disposed to Love , easily suffer their Minds to be drawn away to those Cogitations , by which they are excited to the said effect . IX . The second cause of Passions is the Objects . The second Principle is those Objects , which incur into our Senses ; as any terrible Figure excites the Passion of terrour in the Soul ; whereas a grateful Figure which courteth the Eyes , causeth Joy and Benevolence , in regard the motions convey'd from External things to the Brain , variously dispose the Spirits thereof , and thereupon there arise different Affections in us : So that who ever desires any thing of us with a smooth Tongue , down-cast Eyes , and a Body disposed to Humility , will more easily obtain his desire of us , than another , who on the contrary , with a severe Countenance , an imperious Tone of Voice , and more like a Commander than a Suppliant demands the same . X. The third is the Action of the Soul. The third Cause , is the Action of the Soul it self , as often as according to its innate Liberty , it proposes such or such Objects to be considered , in the long meditation where the Passions arise . XI . The fourth cause is the first disposition of the Body . The fourth Cause is , the first Disposition of the Body in regard not only Affections ; may be excited in us by Rational motions of the Mind , whilest it knows what to prosecute with Love or Hatred ; but also by those first Dispositions of the Body , that procreate those obscure Sensations of Good and Evil , which happens to the Body , as DESCARTES intimates in his Epistles . Behold , saith he , four Passions , Joy , Love , Sadness and Hatred , which I suppose being first in us , we had before our Birth , and judge them to be no other than very confused Sensations or Cogitations ; in regard the Soul was so tied to Matter , that it could not yet attend but to those divers impressions , that were to be received from it : And tho' after some years , it began to be affected with other Joys , and other Loves than those which depend only upon a right Disposition , and convenient Aliment of the Body ; nevertheless that which was Intellectual in its Joys and Loves , had always concomitant those Senses which the said Passions first excited in it ; yea , and those Natural motions and functions which were then in the Body . XII . Which appears in Love. So by reason , that before the Nativity Love did not arise but from a convenient Aliment , which flowing in great plenty into the common Ocean , the Heart and Lungs , excited in them a greater heat than usual ; hence it is , that the said heat always accompanies Love , tho' proceeding from far different Causes . XIII . Three degrees to be observ'd in the Passions Now we may observe , that there is a threefold degree in the Affections of the Mind , answerable to a threefold degree of the Senses . The first is the commotion or alteration of the Heart , the Blood and the Animal Spirits : The second being a consequent from the first , is the perception of the Mind . And lastly , an access of perturbation of Mind , so far as it precipitates inclination or aversion of Judgment or Will , is the third degree in the Affections . CHAP. VII . In what part of the Body the Soul receives its Passions . I. The Soul is joind to the whole Body . FRom what hath been said , is sufficiently manifest , that Human Soul is joind to the whole Body , and that the motions thereof so depend upon its Cogitations , that they may be said to make one compound . Hence that common saying among Philosophers , That the Soul is whole in the whole Body , and whole in each part thereof : Not that the Soul can positively , and by true extension be found in each part of the Body , for that is repugnant to immaterial Substance , such as we have already demonstrated Human Mind to be ; but because the Body is one certain thing , and in a certain peculiar Sense Individual , namely in respect of the disposition of the Organs ; all which are so mutually related one to another , that any one being taken away , the Body is thereby rendred maimed and imperfect ; and since such is the Nature of the Soul , that it is void of all Extension and Dimensions , it can be referr'd to no Member of the Body so as to equal its quantity , but only to the whole Compages of the Organs which is considered as one ; whence it comes to pass , that any part of the Body being cut off , the Soul could not be conceived a jot less , nor if any could be added , a jot greater . II. Human Mind is in a peculiar manner in the brain . But tho' the Soul were joind to the whole Body , yet it could be said more intimately and immediately to be united to one part than another . Thus GOD , tho' he be diffused through the whole World , and by his Power in a manner fills all places , yet in a peculiar way he may be said to be in Heaven , where he Governs and Rules all things as he pleaseth . So we say , that Human Mind resides in the Brain , as in the upper part or Cittadel of the Body ; and that not promiscuously neither in all its Parts , but more especially it hath its Seat in the Conarion , whose office it is to receive the Animal Spirits , and to unite in it self the Images proceeding from Corporeal Organs : For this is that part , wherein the Soul most proximately and especially exerciseth its Functions , by perceiving and willing all things which proceed from the Body , or have their tendency into it . III ▪ Of what use the Glandule in the Brain is . The reason why such a Glandule is asserted to be in the Brain , and to be the Seat of the Common Sense , I have already declared , to which others may be added , whereof this is not the most inconsiderable , that our Soul is one and undivided , and consequently it seems most consentaneous to reason , that that part of the Body to which it is immediately joined be also one ; and since there is no part in the Brain besides this Glandule which is not double , it seems most probable to be the Seat of the Soul ; and that which conduces not a little to the confirming of this Opinion is , that this pineal Glandule is as it were ●eated in its Throne , from whence it may , as I may so say , have a fair prospect into all the 4 Ventricles of the Brain , and so may easily receive impressions from the Nerves that come from all parts : Moreover this Glandule is sufficiently agile and moveable , as being hung upon two Nervous strings , so that it may be moved this way or that way , according to the arbitrement of the Mind ; which is the thing chiefly required in the common Sensorium , for otherwise the Spirits could not tend one way more than another . IV. That the Passions chiefly reside in the Brain . These things thus briefly stated , it must be concluded , that the Passions have their chief residence in the Brain , not in the Heart , as some would have it ; since when ever there are Cogitations or Senses , as above noted , they are produc'd by the Mind in the Brain ; nor is what we affirm rendred invalid by saying , that the Passions , which are always accompanied by some commotion of the Blood and Spirits , may be as it were felt in the Heart , for that so happens because all the Nerves of our Body , are extended as certain Filaments into all parts of the Body : So that when it suffers Pain in any of the Members , for Examples sake , in the Foot or Leg , it is not to be imagined that the Soul makes use of its faculties in those parts ; but rather that it feels Pain , by the ministry of those Nerves which are extended from the said Members to the Brain . No otherwise than when one end of an extended Rope is drawn , the other is immediately moved , as hath been above declar'd . V. In what Order the Passions are form'd . So the Blood being well tempered , and expanding it self more than usually in the Heart , the little Nerves being diffused about its Orifices are so loosened and agitated , that there follows thence another motion , which affects the Mind with a certain Natural Sense of hilarity or chearfulness . So upon the imagination of the fruition of any good , the Spirits are sent from the Brain to the Muscles , and by their help the Orifices of the Heart are dilated , and its Nervules mov'd in that motion , from whence the sense of Joy cannot but follow . In like manner , upon the receipt of a grateful message , as soon as the Mind perceives it , the Spirits , from the Brain , flow to the Muscles of the Bowels , and there moving the Nervules , by their means excite another motion in the Brain , which affects the Mind with a lively sense of Joy. And by the same reason , the senses of Sadness , Love , Hatred , Anger , Fear , &c. are communicated to the Brain through the Nervules of the Bowels , and there immediately , and most especially affect the Mind , and consequently reside therein , as in their primary Seat ; but in the Heart and other parts affected by them , as in their secundary Seat. VI. It is not necessary that the Soul be in the Heart , thereby to perceive Passions . Therefore whilst in the perturbations of the Mind , we observe a certain alteration , as it were , inhering in the heart ; we must certainly conclude , that our Mind perceives not but by the help of some Nervule which reaches from the Brain to the Heart ; and there is no more necessity that the Soul should immediately exercise its functions in the Heart , because it feels its Passions therein , than that it should be in Heaven as often as it perceives the Rays , and the Globular Pression made by the Sun. VII . The more vehement Motions of the Spirits may disturb the Soul. Hence it often happens , that divers affections arise in the Soul , namely , when the Spirits are otherwise disposed by the Mind , than by the Objects , or their own temperament . In regard that Human Mind , tho' it be wholly rational , yet does it not always make good use of its own reason , but is greatly disturbed by external things ; so that the Body by its Spirits , and the Soul it self by its Will may excite different Motions ; and herein consists those conflicts which are vulgarly said to interceed between the lower and upper part of the Soul. For since all our perceptions , as well those which proceed from the Will , as those which depend upon the Impulses of the Spirits , contain something evident in them , that may invite to prosecute this or that Object ; this by Love , that by Hatred : the Glandule may be drawn one way by the Soul , another way by the Animal Spirits ; from which different motions , the Soul feels it self alternately inclin'd , one while to take one part , another while the other ; and in this one thing consists their repugnance : yet not so , as that the Soul can at one and the same time be carried two contrary ways , or the Glandule be at the same moment inclin'd to opposite parts , but only upon this account , that the force wherewith the Spirits incline the Glandule on one side , and wherewith the Mind struggles with its Will on the other side , hath this effect , that the Soul , almost at one moment , feels it self stirr'd up to have an affection , and aversion for one and the same Object . CHAP. VIII . Of the Order and Number of the Passions . I. Passions are made different from their Objects . ALthough the Soul depends not upon Corporeal Objects , so as to think , and without any material Species , to be able to comprehend all sorts of things : And tho' in the forming of the Passions , it sometimes makes use of its own intelligent faculty alone , and can at pleasure apply it self to conceive sometimes one Object , sometimes another ; yet it is manifest from what hath been said before , that the passions may also be excited by Objects which move the Sense : Nay , and that these Objects are the most especial and common principles : so that to find passions , there needs nothing but to weigh the nature of the Objects , and to take notice of the Effects which proceed from them . But because in man they are many and various , and many times so confus'd among themselves , that they can scarce be distinguisht from each other ; we must mind the diversities of Objects which present themselves to our Senses , that by the perception of them , we may the more easily arrive at the knowledge of those affections which are begotten in us . Yet there is no necessity that all the diversities of Objects should be examined ; but those alone which can either profit or hurt us , or any other way be relating to us . II. The Soul is void of partition , and consequently ill divided into Irascible and concupiscible . Wherefore the better to enumerate the Passions , we are only to take notice how many several ways Objects may concern us , or may act upon our Senses , so as to profit or hurt us . Nothing is more frequent in Schools , than to take the Soul in pieces and to divide it , I know not by what Art , into Sensitive and Rational , by which they constitute two Appetites in the sensitive part of the Soul ; whereof one they call concupiscible , which resides in the Body , and tends wholly to its Conservation ; the other Irascible , which comes nearer to Reason , and supplies it with strength and vigor . But hence arose this Error of assigning 2 persons as it were in a Scene , that they did not carefully distingui●h the Functions of the Soul and Body , but attributed to the Soul those Offices which belong to the Body only . For whatsoever opposes Reason , cannot proceed but meerly from the Body , which comes to pass when the Animal Spirits , which are also Bodies , hit by an opposite way upon the Glandule , and by their power endeavour to hinder the effect of the Soul. For in one Body there is to be considered but one Soul , void of all parts , and being but one and the same , called both Sensitive and Rational . Book . 1. Part. 9. Chap. 9. G. Freman In● ▪ I. Kip Sculp IV. Admiration the first Passion that occurs to us . Therefore another way must be found out to enumerate the Passions ; and in my mind there can be none more convenient , and more certain , than for all the motions of the Mind , which occur to us , to be considered in their Order . For as soon as any thing presents it self to us , or appears under any species which hath no similitude with any thing we knew before , it causes the Soul to be surpris'd at the sight thereof , and to remain some time in contemplation upon it ; and in regard this may possibly happen before we have well considered whether the said thing represented to us be good or bad for us , it hence follows that Admiration is to be accounted the first of all those Affections which are inbred in us ; but since it happens that we either admire the excellency of any admirable Object , or contemn the despicableness of any other , either Esteem or Contempt must needs accompany this Admiration , and by this means Magnanimity or Abjection of Spirit are created in us ; namely , while we either extol our selves for some just cause , or contemn our selves for that pusillanimity which we find to be in us : But when we esteem greatness of Action in other persons , whom we esteem capable of doing Good or Ill to Mankind ; from such an esteem as this proceeds Veneration . V. The next are Love , Hatred , Cu●idity , ●ope , and ●he like . In the next place , when the Soul considers under some qualification an Object of Good or Evil , that is , of what is either agreeable or ungrateful to us , having no regard to difference of time therein , it excites either to Love or Hatred ; for asmuch as Love is an Affection of Union , as Hatred is of Separation . But when respect is had to time , that is , when a man is more carried on to the Contemplation of the future , than of the present or past time ; a future Object is expected , either as only possible , or moreover as easie or hard to be obtained . From the former consideration is kindled Cupidity , by which not only the presence of an absent Good , and the conservation of what is possest is desired , but also the Absence of an Evil , as well present as in apprehension . But if a thing be represented , not only upon the account of possibility , but also as easie of acquisition , it begets Hope , the utmost degree whereof is Trust or Security . But if it be lookt upon as difficult to be obtain'd , it creates Timidity or Fear , the utmost degree whereof is Despair : Hitherto may be referred Doubtfulness or Fluctuation of Mind , when we dispose our selves to deliberate or enter upon Counsel . VI. Here follow those Passions which consider Good and Evil as present . Lastly , when Good and Evil , as being considered to have relation to us , are present , they produce 2 other Effects ; the first Joy , the other Sorrow or Sadness . But when we look upon them as relating to others , we judge those persons either worthy or unworthy of so great a Good. If worthy , it producess gladness in the Soul , either Serious or mixt with Derision : If unworthy , the good which attends upon them stirs up Envy or Heart-burning in us ; and if bad attend them , it stirs up Commiseration , which is a kind of sadness . VII . Acquiescence , Penitence , Glory , &c. In an Object past , or even also present , attention may be had to the Cause of Good or Evil. A Good which has been done by us , if it relate to opinion we have of it as Good , it begets an inward acquiescence or contentment , which is the sweetest of all passions , and wonderfully delights the Soul ; whereas an Evil done , if it relate to the Opinion we have of it as Evil , brings forth repentance , which is the most troublesom of all the passions , and incessantly disturbs and afflicts the Soul. A Good done by us , as it relates to the Opinion which others conceive of it , produces Glory ; on the contrary , Evil so relating , Shame and sense of Disgrace . If a Good be conferred upon us by another , we testifie our Gratitude towards him : If the same Good be bestowed upon another , he is the Object of our Favour : On the other side , if an Evil be inflicted on others , it causes our Indignation ; if on our selves , our Anger ; which two last Affections may be said to be species of Hatred or Aversion . A long Duration or Continuance of Good induces Satiety or Loathing ; as on the contrary , Duration of Evil diminisheth Pain or Misery , and renders it more light and tolerable . VIII . Desire , Hilarity , &c. Lastly , from a past Good , upon remembrance of the Joy thence received , there springs up Desire , as from an Evil happily surmounted , Hilarity ariseth , which may be referred to Joyfulness . Now altho' we have here enumerated several sorts of Passions , yet if they be each of them well considered and examined , it will soon appear , that many of them are referrible to others as primitive ones , which are reckoned ony 6 in number , namely Admiration , Love , Hatred , Cupidity or sensual desire , Joy and Sadness : The rest are secundaray , being either compounded of many of them , or referrible to them as to their Genus's . CHAP. IX . Of Admiration . I. Admiration precedes all other Passions . ADmiration leads up a Troop of Passions , being the first and chief of all that affect Human Mind , and upon which all the rest , in some sort or other , depend . For as in other Functions of the Soul , Apprehension preceeds Judgment and Discourse , and it is necessary that some Object be represented before such time as the Soul gives or denies assent thereunto : So any thing whatsoever is perceived by Admiration , before any one can prosecute it with Love or Hatred , or can Covet it , or conceive Joy by the obtaining of it , or Sorrow by the want of it . II. The definition of Admiration . Now Admiration is a suddain impulse of the Mind , by which it is led to an attentive consideration of those Objects which seem unwonted to it , and with the novelty whereof it is surpris'd . This Passion belongs to the Brain alone , and hath no commerce with any other parts of the Body , as other Passions have , which are referred to the heart , and which the motions of the Blood and Spirits ever accompany . That this is peculiar to Admiration , may be collected from hence , namely , that when ever this Passion is imploy'd in the attention of the thing perceived , and only regards the novelty thereof , it hath no consideration therein either of Good or Evil , and consequently hath no correspondence with the Heart and Blood , upon which the whole concern of the Body depends , but only with the Brain , in which are laid up all those Instruments which conduce to the forming of this Cognition . III. What produces Admiration . The Cause of this Affection is the very Impression made in the Brain , according as it represents some Extraordinary Object , worthy the Souls Employment and Attention . For the Novelty of the thing hath somewhat of Gratefulness , which takes the Beholders , and draws their Contemplation to it . Hence it comes to pass , that we admire all things that are Novel , and those always please most that came latest into our Sense . To confirm what hath been said , the motions of the Spirits are not a little conducing , which are dispos'd by that Impression , and with great Violence direct their Course towards that part of the Brain in which it was form'd ; and so far as they receive from it a disposition to pass into the Muscles , which serve to retain the Organs of the Senses in the same Position . IV. The force and efficacy of Admiration . Altho' Admiration takes beginning in the Brain , and is wholly employ'd in the Contemplation of a New and unwonted Object ; yet nothing hinders , but that by the said Impression which it makes in the Brain , it may act upon our Body , and imitate the Efficacy of other Passions . Nay , sometimes it grows so prevalent , that it seizeth on our Body more strongly than they , and exercises its Power upon it much more forcibly ; which chiefly proceeds from hence , namely that the Novelty from whence it springs , brings forth Motions the most prompt of all , and such as have their whole strength at the beginning . Nor can it be doubted , but that these sort of Motions are stronger , than those which are increas'd by degrees , and have no strength , but what they acquire by little and little . Since it is most certain , that such like Motions may either be averted , or stopt by little labour ; whereas the sudden Surprizal of a New thing , admits of no such aversion , since it can scarce be discern'd , and insinuates it self in a moment . For as we can stir Hand or Foot almost in the same Moment in which we think of Moving them ; in regard the Idea of this sort of Motion , which is form'd in our Brain , sends Spirits into the Muscles , fit to effect that said Motion : So the Idea of a grateful Object , which comes unawares into the Mind , immediately by the help of the Nerves , sends Spirits , which opens the Orifices of the Heart . Nor does Admiration any thing else in this business , but by its Novelty add Strength to the Motion , and causes the Blood , which upon the sudden dilating of the Orifices of the Heart , flows through the Vena Cava into it , and goes out through the Vena Arteriosa , suddenly to inflate and expand the Lungs . V. A Novelty affects the Brain in an unwonted manner . To which Reasons another also may be added , namely , That those Things which outwardly excite Admiration , when they are New , and have not yet arriv'd through our Senses to the Brain , strike it in some certain Parts , where it hath not been struck before ; and since those Parts of the Brain are more soft and tender than the rest , it falls out that they receive the Stroak deeper , and the Affections of the Motions which are there begotten , are , by reason of their unwontedness , render'd more Vehement . VI. Esteem and Contempt , Species of Admiration . There are 2 Species of Admiration , Esteem and Contempt , which are not to be taken for simple Opinions , that without Passion may be entertain'd concerning the Value of any thing whatsoever , but for the Affections which arise from those Opinions : Esteem therefore is a propension of the Soul , produc'd by the Motion of the Spirits , to represent to its self the Value of any thing whatsoever . And Contempt is the opposite propension which the Soul hath to consider the Littleness or Vileness of the thing Contemn'd : which Passions may be referr'd not only to External Objects , but even to our selves ; as namely , when we strictly enquiring into our selves , find Reason to suspect or despise our own Merit . But in regard we often flatter our selves , and judge that more laudable , which is done by our selves , than by others ; it will be worth our while to understand what it is , for which we may entertain a Self-esteem . And truly , I can see nothing that I judge can be Entituled to this Merit , but the right use of our Free-will , and that Greatness of Soul by which we govern our Wills , and subdue them to the Yoak of Reason . Forasmuch as other Goods , which are out of our power , can conduce nothing to our Good , and consequently deserve not our Esteem or Praise . Only those Actions , which depend upon our Will , can confer upon us the Merit either of Praise or Dispraise ; since by the use thereof we are render'd in a sort like to GOD , and come so much the nearer to his Image . In this alone true Generosity consists , when a Man well knowing that nothing properly is his own , except the free disposition of his Will , duly Values himself as he sees Cause , upon the right use of his Reason , and retains a firm purpose always to act those things which he shall judge to be most Excellent . VII . What Veneration is . Veneration , which considers Objects without us , is an Inclination of the Soul , by which it is carried , not only to Esteem the Person which it honours ; but also to Subject it self to him with a certain Fear , for the sake of gaining his Favour . Whence it comes to pass , that Veneration proceeds only from the Consideration of Power , which we conceive to be in a Free Agent , wherewith he is able either to benefit or hurt us ; although all this while we know nothing of his Will , that is , we are not certain which of the two will befall us , Good or Harm . So in Old times , some venerated Mountains , Temples and Groves , not that they believ'd , that these Works of Art and Nature were GODS ; but because they imagin'd , that certain Divinities lay hid in them , which might at their pleasure either do them Good or Hurt . VIII . Effects of Dedignation . To this Passion , Dedignation or Disesteem is oppos'd , by which we despise Free Causes , though at the same time we judge them to have power of doing Good or Harm ; because we think them so much beneath us , as not to be capable of Executing their said Power upon us . Book . 1. Part. 9. Chap. 10 G. Freman . Inv I. Kip Scu To the Right Noble Catherine Dutchess and Countess of Northumberland Viscountess Falmouth & Baroness of Pontefract &c. a. This Plate is humbly Dedicated by Richard Blome CHAP. X. Of Love and Hatred . I. Why Love and Hatred are to be treated of together . ALtho' Hatred be oppos'd to Love , and they both of them never agree in the same Person , about the same Object , nevertheless it is Expedient to joyn both together in this one Chapter , that by comparing the Nature of them both , one with another , it may the more appear wherein they most chiefly differ . II. The Definition of Love. LOVE is defined , a Perception or Commotion of the Soul , generated by a special Motion of the Spirits , whereby it is excited to joyn it self by its Will to those things which seem grateful to it . On the contrary , HATRED is a Commotion of the Soul , produc'd by the Spirits , by which it is incited to separate it self , by its Will , from Objects which are represented as ungrateful and noxious to it . But in regard the Soul applies it self to those things which it judges Good , and is averted from the very same things , so far as they are represented to it under the Notion of Evil ; not only by Love and Hatred , but also by Judgment ; we add , that Love and Hatred are caus'd by the Motion of the Spirits , which is peculiar to all Passions , and which separates them from other Perceptions of the Soul. To joyn our selves by Will to any Object , is not to tend to that which is future , and to covet it as a thing absent ; but to consent by Affection , which happens when we consider our selves , as it were already joyn'd to the thing belov'd , that is , when we conceive our selves to make up , as it were , one Total with it , and whereof we think our selves to be but one part , and the Beloved thing another . But in Hatred , we consider our selves as a Total , wholly separated from the Object . III. What things produce Love or Hatred . The Causes of these Affections , are Objects which may be represented to the Soul by the Internal Senses , to wit , it s own proper Reason . For that is generally accounted Good or Evil , which is judg'd by our Internal Senses , either agreeable or contrary to our Nature . Or else by the External Senses , by which the Beauty or Deformity of things is apprehended . For we commonly judge those things Beautiful or Deformed , that court or offend our Sight ; which , in that particular , excells all the rest of our Senses . Hence we are inclin'd to things beautiful and fair by that part of Love , which may rightly be call'd Complacence . Evil and Deformed things , we prosecute with Hatred and Horrour . The said Love may also be called Benevolence , in regard we affect not all things with the same Affection : For according to the Esteem we have of them , we love some things more , and some things less ; whence Philosophers have been forc'd to invent several Names , for the making a distinction between some sorts of Love and others . IV. There are three sorts of Love. For when we set a less Value on any Object , than upon our selves , and think it inferiour to us , we may be said to have a Propension , or sort of Benevolence towards it . When we have the same Value for it as for our selves , and Opinion of Merit makes no difference between us and that , we are tied to it by that which we call Friendship . But if we place more Worth and Merit upon the Object , and admire it above our selves , it becomes the Object of our Devotion , Reverence , or Worship . So that Love may be distinguish'd into Benevolence , Friendship , and Devotion , as into three species or diversities , wherein it wholly consists : For things Inanimate , or Animals void of Reason , may be belov'd ; but no such thing as Friendship can be , but between Man and Man ; that is , not as to the Sex , but as between one Human Creature and another ; in whom it is so innate to be United each to other , that neither of them can be so vile or contemptible in the others Eyes , as not to be thought worthy to be joyn'd to the other by some Tye or Relation , provided he know that he is belov'd and be indued with a generous Spirit . V. Devotion is chiefly directed to the Deity . But by Devotion we are affected most chiefly to the Supream Deity , whom if we knew to that degree as were fit , we could not but love , tho' it may be said that Subjects to their Prince , Natives to their Country , Citizens or Towns-men to the City or Town where they were born or bred , are carried with a sort of Devotion , as Valuing the said Objects thereof above themselves , and thinking it their Duty to expose , if need be , their own Lives upon their account . VI. The Causes of Love are in divers Parts of the Body . The Cause of Love and Hatred , as also of the three other Passions , is not , as that of Admiration , in the Brain alone ; but also in the Heart , Liver , Spleen , and other Parts of the Body , which conduce to the generation of the Blood , and the conveyance of the Spirits thence . For altho' the Blood is carried to the Heart through the Veins , by a Circular motion ; yet sometimes it happens to be impell'd into it with a more violent Force through some Veins , than through others . It happens also , that the Passages by which the Blood enters into the Heart , or by which it issues out of it , are by some Accident or other , made more wide or more narrow . Hence in Love there arises a Notable agitation of the Blood and Spirits , when the Impression of the Lovely Object , form'd in the Brain , conveys the Animal Spirits through the Nerves of the 9 th Conjugation , to the Muscles of the Stomach and Intestines , that so the Chyle or Alimental Juice , which by an iterated Circuit passing through the Heart , is turn'd into Blood , may pass on very swiftly to the Heart , and makes no stay either in the Vicine parts , or elsewhere ; but with a rapid Course entring into it , stir up a more than ordinary fierce heat or fire therein : Because then the Blood becomes rarefied , and sends the more enlivened Spirits into the Brain ; which Spirits corroborating the Impression which the first Perception of the amiable Object forms , Cause the Soul to rest in that Perception , and to take notice of the said Object , as acceptable and good . VII . Hatred proceeds from different Causes . On the contrary in Hatred , the first perception of the thing we have an aversation to , so draws down the Spirits which are about the Intestins and Stomach , that they hinder the Chyle from mixing with the Blood , that is , by Compressing all the Orifices , by which it uses to flow down thither , and at the same time transmits some of this Chyle through the Nerves of the Milt , and lower part of the Liver , which is the receptacle of Choler , with other Blood to the Heart , which causes no small inequality in its Heat , because the Blood that proceeds from the Milt , hardly suffers alteration , and can scarce be Heated or Dilated : Whereas the Blood that proceeds from the lower part of the Liver , which is the receptacle of the Gall , is rarefied and expanded in a Moment . Wherefore the Spirits transmitted from the Heart toward the Brain , consist of parts of different Vertue , and are agitated with unequal motions . Whence it comes to pass , that they there corroborate and fortifie the Thoughts of Hatred , which they find newly formed , and weary the Soul with thoughts of Melancholy and Sourness . VIII . Various effects of Love. There are reckoned up many effects of Love , as the Pulse of the Arteries being equal and more intent and vehement than usual ; a calm Heat glowing in the Heart ; a suddain Concoction of the Meat in the Stomach , and the like ; but the most principal of all , and which most chiefly requires our consideration , is a kind of Languishment , which is no other than a certain proclivity to a cessation of motion , which proceeds from hence , namely , that the Pineal Glandule disposes not the Spirits , which are in the Cavities of the Brain , to flow into one Muscle rather than another . This Languour is produc'd by Love , when the thing desired cannot for the present be obtained , for then Love so detains the Soul in the Cogitation of the beloved Object , that it makes use of all the Spirits in the Brain , to represent to it the Idea thereof , and stops all other motions of the Glandule which conduce not to this effect . CHAP. XI . Of Affections . I. Cupidity no less disturbs us than those Passions that respect the future . SInce all the Affections of the Soul , except Admiration , tend towards Good and Evil , and are given us by nature , for the aiming at what is profitable , and rejecting of what is hurtful to us ; it is to be considered how many ways it may be done : For since in Love and Hatred , there is no respect had of time , and only the convenience or inconvenience of the Object is lookt upon , these Passions seem to agitate , no less than those which tend towards the future , and seek after the Object with a kind of Anxiety : Hence the Cogitations of young Men which regard things to come , are more precipitous , and more sharply molest and disquiet their Minds , such as are Hope , Fear , Jealousy , &c. which are species of Cupidity . II. What Cupidity is , and how it comprehends as well an aversation of Evil as desire of Good. Cupidity therefore or desire is a commotion of the Soul produc'd by the Spirits , whereby it is carried towards Good as a thing to come , by which Passion we not only wish for an absent thing , whose presence we judge convenient for us , but likewise the conservation of the thing possessed ; nay , if we strictly inquire into the Nature of Cupidity , we by it no less desire the absence of an Evil not present , than the presence of that which is Good , and which we apprehend may possibly happen , so that Cupidity comprehends not only the desire of Good , but also the declining or aversation of Evil : For as much as to speak properly , there is one and the same agitation of Mind , by which at the same time we are moved to aim at some Good , for Example sake , Honours , and to decline a contrary Evil , that is to say , Ignominy or Disgrace : For since there is no assignable Good , whose privation is not an Evil , nor any Evil , if it be considered under a positive respect , whose privation is not a real Good , there seems no reason to distinguish between that Appetite by which we affect the Good , and that by which we decline and reject its contrary . III. The Difference between avoiding Evil , and desiring Good. All the difference that can be conceived in them , proceeds only from the Passions which accompany this various desire , namely , because to the Cupidity by which we tend to any Good , there are annext Love , Hope , Joy , &c. and to the same Cupidity , by which we are carried to the Aversation of any Evil , there are joyn'd Hatred , Fear and Sadness ; wherefore if Cupidity be considered according as it tends to the Prosecution of Good , or Aversation of its contrary Evil , it cannot be a double Passion , but only one , which executes both parts . IV. This Passion is produc'd by the Animal Spirits . The causes of this Passion are the Animal Spirits , which pass from the Heart to the Brain , and seem to cherish and preserve the Image there first impress't . For as soon as the Soul hath a Will to acquire some Good , which is grateful to it , or to remove some Evil ; immediately it Transmits the Spirits , by the help of the Glandule to all parts of the Body , especially to the Heart , that , so much the greater plenty of Blood as is received within its Cavities , so much the greater quantity of Spirits may be conveyed to the Brain , as well to conserve , and corroborate therein the Image of the Will , as to move those Muscles that are necessary for the gaining of that which is desired ; whence it comes to pass , that when the Mind desires any thing , the whole Body is rendred more Agile , and becomes more chearful to execute all the offices of the Body , than at other times it uses to be ; namely , because the Heart being more vehemently agitated , supplies the Brain with the more Spirits , which taking their course thence to the Muscles , cause the Senses to become more vivacious , or the Members of the Body more disposed to motion . V. The several species of Cupidity . To Cupidity or Desire , as hath been said , are reduced Hope , Fear , Jealousy , Security , Desperation , Fluctuation of Mind , Animosity , Boldness , Emulation , Pusillanimity and Consternation . VI. The Definition of Hope . Hope is a disposition of the Soul , produc'd by a special motion of the Spirits , to believe that that will come to pass , which it desires . So that no Object can stir up Hope , unless it be represented to the Mind , as easie to be obtained . VII . Of Fear . Fear , is another disposition of the Mind , by it perswades it self that that which it desires , will not come to pass : These two Passions however they are opposed , may nevertheless be found in the same , and at the same time , namely , when any one is perswaded by different Reasons , by some , that the Object he desires may be easily , by others , difficultly acquir'd . VIII . Of Jealousie . Jealousie , which is referr'd to Fear , is the Fear of losing a good which we greatly esteem , proceeding from the least causes of suspecting ; or when led by suspicion only , we fear to lose a certain good . Book . 1. Part. 9. Chap. 11. G. Freman . Inv. I. Kip Sculp . To the Worshipfull Henry Gorges of Eye in Herefordshire Esq r This Plate is humbly Dedicated by Richard Blome . Book . 1. Part. 9. Chap. 12. G. Freman Inv. I. Kip ● To the Worshipfull James Mundy of the Inner Temple Esqr. one of the Judges of the Sheriffs Court London . This Plate is humbly Dedicated by Richard Blome . IX . Of Fluctuation of Mind . Fluctuation of Mind , is the Fear of Erring in the choice of things , which tend to constitute the end , which while it retains the Soul in doubt , and suffers it not to perform one action more than an●ther , causes it to perform none , and consequent●y hath a sufficient time left it to determine before it makes choice of any thing : Which Passion is so prevalent in some Persons , that oftentimes when there is no need of deliberation , in the thing designed , nay when it is the only thing to be omitted or performed ; yet nevertheless , they remain in such suspense , that they are altogether incapable of inquiry into other things . X. Of Animosity , Boldness and Emulation . Animosity is some certain Heat or Agitation , which disposes the Mind to act stoutly in the performance of those things which it designs . If any great danger attend the said things , it is called Boldness , which disposes the Soul to act those things , on which some great and imminent danger is attendant . Emulation , which is a certain Species of Animosity , ariseth from the consideration of other Men's success : Because when we see other Mens undertakings happily succeed , we are commonly moved by their Example to set upon the same thing , and in our Acting to Trace the same Footsteps as they have done . And this happens while the Body is so disposed , that Cupidity and Hope , have more strength to impel the Blood copiously into the Heart , than Fear and Desperation have to hinder it . XI . Of Pusillanimity and Consternation . To Animosity , Pusillanimity is directly contrary , and it is a Languor or Coolness which hinders the Soul from going on to execute those things , which it would certainly execute , if it were destitute of the said Coolness . And Consternation , which is opposite to Boldness , is joyn'd not only to the Cold , but also to the Stupidity and Perturbation of Mind , which disarms it of its Power and Ability , to oppose its self against those Evils which it expects , and thinks to be at hand . CHAP. XII . Of Joy. I. Gladness is the Term or Bound o● all Affections . GLadness or Joy may be called the Term or Bound of all the motions of our Soul ; which as they begin in Admiration , so they cease or terminate in Joy as in their own proper Scope or Aim : For desire of Good ceaseth in the obtaining of Good , and all inquietude is removed from us , as soon as we possess those things which we so greatly desired . In present Joy Fear ceaseth , Sadness is banisht , Desperation is destroyed , Love is at rest , and the rest of the Affections vanish , whilst we are wholly taken with Joy or Pleasure . II. The Definition of Joy. Gladness or Joy is a pleasant commotion of the Soul , in which the possession of that Good consists , which the impressions of the Brain represent to it as its own . We say , that the possession of Good consists in a pleasant commotion of the Soul , in regard it is as it were the only Fruit of all the Goods it has , which being taken away , it can no more be said to injoy them , than if it were totally deprived of them . To which it is properly added , that that Good , by the impressions of the Brain , is represented to the Soul as its own : That Joy , which is a Passion , may the more easily be distinguisht from that which the Soul experiments by Action , which that they may not be confounded , it will not be from the purpose to observe the Nature of each . III. Joy is twofold sensual and Intellectual . For Joy is twofold , one Sensual or which so depends upon the Body as to make it its principal Object , the other Intellectual , which is a pleasant commotion of the Soul , springing from a clear and distinct knowledge of the Good wich is apprehended : Which distinction is hence understood , namely , because the Intellectual Joy may sometimes be without the Sensual , as when from any good Action , we feel a satisfaction from that pure consideration that we have performed our Duty ; altho' it be difficult to experiment it , so long as the Soul is in the Body , since the Intellectual Joy makes always some impression upon the Body , such as is required to the framing of a Passion , for there is so streight a Union between our Soul and Body , that tho' the Good which the Soul is sensible of belongs not to the Body ; yet Imagination always fains some Idea in the Brain , from whence there follows a motion of the Spirits , which produces the Passion of Joy. IV. The External cause of this affection is the possession of a Good. The cause of this Passion , as may be gathered from its Definition , is the possession of som● Good ; for then the Soul seems to be satisfied , when it injoys that thing which it esteems to be its own Good , and to conduce to its Felicity ; tho' it often happens , that we find our selves overjoy'd , and wrapt up in I know not what kind of Pleasure , when the cause of this change is utterly unknown : As when our Body is chearfully dispos'd , and with great alacrity performs its offices , but this proceeds from hence , namely , that the Good impresses some Idea's in the Brain , without the help of our Soul : That is , when the constitution of the Brain is such , that the Animal Spirits may the more easily be brought down into the Nerves , as well those which serve for dilating the Orifices of the Heart , as others . So when the Heaven is somewhat more than ordinary Serene , we feel a kind of Hilarity or Chearfulness in our selves , which proceeds from no Function of the Intellect , but only from the impressions , which the motion of the Spirits excites in the Brain . V. The Internal causes are the Blood and motion of the Spirits . The Internal Causes of this Passion are the Blood , and motion of the Spirits , not so much in the Nerves of the Stomach and Intestines , as in Love , or of the Milt and Liver , as in Hatred , as in those which are spread through the rest of Body , those especially which are about the little Mouths of the Heart . In regard they by opening and inlarging afford a way to the Blood , which other Nerves propel from the Veins to the Heart , that it may go in and out in greater plenty than usually ; but because the Blood having many times before entred the Heart , and so flowing out of the Arteries into the Veins , is thereby more subtilized , it thereupon becomes the more easily rarefied and creates Spirits , which by reason of their equality are adapted for the forming and corroborating impressions of the Brain , which supply the Heart with joyful and serene Cogitations ; whence it happens that so long as the Soul is affected with Joy , the Pulse of the Arteries is equal , and more quick than usual ; moreover a certain grateful Heat is felt , not only in the Breast , but also in the External part of the Body , into which together with the Blood it is copiously transmitted . VI. The various effects of Joy. The most noted instance of Joy , and which is commonly observed in those that are therewith affected , is a Lively Colour , and generally ruddy , which it paints in the Countenance , and which hence proceeds , namely , that Joy dilating the Fibres of the Heart , causeth the Blood more copiously to enter into the Heart ; and being there more intensely warmed to be distributed the sooner into the Veins ; and by this means excites a grateful and lively Colour in the whole Body , especially in the Face : Moreover , in the same affection of Joy , the Spirits happen to be so disposed ; as that those which flow into the Muscles of the Face and Breast , make such a concussion of them , as to cause Cachinnation or bursting into a strain of Laughter , which sometimes is so great , that by the force thereof , the passages of the Eyes being opened , Tears thereupon gush out : For Tears are nothing else but Vapours , which in their passage out of the Eyes , are turn'd to Water in the superficies of them , after the same manner , as was before declared , concerning the Original of Fountains . VII . Of Joy the●e are divers Species . There are divers species of Joy , according as we consider the Good hapning to our selves , or the Evil to others . The first which offers it self is Derision , which hence hath its Original , viz. that we find some Light Evil in one , who is thought to deserve it . In which Passion there is mingled something of Hatred . As when we have an aversion to the said Evil ; and yet nevertheless rejoyce to see it inflicted on him whom we think it but just it should fall upon . Those that are remarkable for any kind of deformity or defect of Body , are chiefly obnoxious to this Passion , as the Gibbous or Bunch-backt , Goggle-Ey'd , Lame , who , in regard they are not ignorant of their being an Object of contempt and derision from others , rejoyce to find others in as bad circumstances as themsemselves ; it being to them a solace of that Grief , which they suffer from the Contumely objected against them ; so that they take the least occasion given to insult over them , and sport themselves with their defects . VIII . What Satisfaction is . Satisfaction or Acquiescence in ones self , is a Joy of all the most grateful , which proceeds from the Opinion of something done by us which we judge to be Good. Whence they who give themselves to Vertue and Honest Actions , feel , I know not what Tranquillity , of Soul , and Quiet of Conscience , which is the most pure and sincere of all satisfactions , because they depend upon those things which are in our power . IX . What Favour . Favour is a Joy wherewith we are affected toward those that do well , and use their Free-will according to Reason . Since by a Natural Impulse , we are apt to Love those whom we judge to be Well-doers , tho' nothing of profit accrue to us thereby . X. What Gratitude . Gratitude is a certain joyful desire of doing well to those who have deserved well of us . This Affection is peculiar to Generous Souls , who are never insensible of Kindnesses , but strive always to be requiters of Benefits receiv'd . XI . What Glory . Glory is a Joy arising from Opinion or Hope , conceiv'd of obtaining praise among others . This Passion is founded upon Self-love , as when we value our selves according to the esteem we see set upon us by others . CHAP. XIII . Of Sadness . I. Sadness on Enemy to Man. GRIEF brings up the Rear of the Passions , the most common affection among Mortals , the Companion and Enemy of Joy. It seems to have been allotted by Nature for the Persecutor of Mankind , and lier in wait as well for Soul as Body . There is scarce any Sadness which does not transfer its force from the Soul upon the Body , and with one stroak hit two different things at once . II. The Definition of Sadness . For Sadness is no other than a certain ungrateful Languor , or the Inconvenience which happens to the Soul , from the Evil or Defect which the Impressions of the Brain represent to it as its own . Which Definition extends only to Sensual Pains , as they differ from Intellectual . For no doubt , but sometimes , there may be Sadness in the Soul , tho' all Cause be removed which excites Corporal Pain , as appears in those who have a Limb cut off , who are not only affected with Sadness upon the loss of the said Member , but also long after when they look upon themselves as maim'd persons , and depriv'd of a part which conduceth to the gaining of a Livelihood . But in regard these sorts of Pain are seldom found , which are produc'd by an Action of pure Intellect ; and whatsoever happens to the Soul , so long at it is united to the Body , is depainted forth by Imagination in the Brain , We only here treat of Sadness , as it is a Passion . III. Whence Grief ariseth . And it arises from from an Opinion of an adherence of some Evil or Default ; for the Body cannot be hurt , but the Soul must immediately be disturbed , and be sensible of a certain bitterness thereby . Tho' it sometimes happens , that we find our selves sad or dejected , when ignorant of any causes of the said dejection . As when the Body languishes , and is not able to perform its functions , when the Heaven is all over covered with Clouds , as it often happens in the Winter-time ; because then the Nerves of the Body are not , as they us'd to be , agitated , and so remain , in a sort , immoveable . IV. The Internal Causes of Sadness . Sadness arises when the Animal Spirits are so dispos'd by the Glandule to the presence of an Object of Sadness , that they streighten and contract the Orifices of the Heart by the Nervule wherewith they are encompassed , and hinder the Blood from its copious entrance into it , and egress out of it . Whence it happens that the Heart hath very little of Ardour and Inflammation , the passages in the mean time remaining open , through which the Chyle is conveyed from the Stomach and Entrails into the common Ocean , which is the cause of Appetites being diminisht , unless Hatred supervening Sadness , which is oftentimes joyned to this Passion , closes and shuts them up . Book . 1. Part. 9. Chap. 13. G. Freman . Inv. I. Kip Scul● VI. How Tears are attendant upon Sadness . Tears , as they accompany Joy , so also sometimes Sadness , and are produc'd , when upon the Blood being refrigerated by Sadness , the Pores of the Eyes are contracted , by reason of which compression the Vapours proceeding from them are converted into Water ; that is to say , because their motion being retarded , their parts meet , and are so united one with another , that they end in Tears . VII . Evil , according as it is apprehended , excites various effects in us . As Evil is an Object of Sadness , so it produces various effects in us , according as we refer it to our selves or others . For an Evil offered by us under the notion of an Evil , when we consider that we have committed it , excites repentance , which is so much the more bitter , in regard it depends upon our Free Will , and was in our power of committing or not committing that which so much aggrieves us . The Remorse of Conscience is a Sadness arising from a scruple or doubt , whether what we have done be good or not . In this Passion , Dubitation ought to be necessarily included ; forasmuch as if what we commit should be manifestly known to be Evil , we should refrain from committing it , since our Will is never carried on , but to those things which are represented to us under some appearance of Good. And if that Evil which we commit , should plainly appear to be an Evil , we should then be toucht , not with a simple remorse , but with downright Repentance , which is the severest of all Passions . We are therefore toucht with remorse , because we attempted a work before we made any doubt of it , or shook off the scruple of Mind which attended it . VIII . What Envy produces . Envy is a species of Sadness , not simple , but mixt with Hatred ; which proceeds from hence , namely , that we see a Good to befall others which we judge them unworthy of . This Passion extends not it self to all sorts of Good , but only those which we call the Goods of Fortune . For those things which are granted to us by Nature , seem to be above Envy . The Envious are for the most part of a Livid Colour , in regard Sadness operates upon the Body the same way as Hatred , causing Choler , which proceeds from the lowermost part of the Liver ; as likewise Melancholy from the Spleen , to flow to the Heart , from whence diffus'd through the Arteries and Veins , they cause the parts of the Blood which is in the Veins to be less agitated ; and this is sufficient to induce a Livid Colour upon the Countenance , provided it be copious and intense enough . IX . What Fastidie is . Fastidie or Loathing , is another sort of Sadness arising from the same cause from which Joy formerly arose ; for we are of that Humour , that almost all things we possess , are valued by us as good , only for the time being , and are afterwards lookt upon as incommodious , which especially appears in Eating and Drinking , which never please but so long as the Appetite prevails , and are distastful when the Appetite ceaseth , and because they then cease to be grateful to the Taste . X. The Eeffect of Commiseration . Commiseration is a Sadness mixt with Benevolence or Love , proceeding from the consideration of some Evil which befalls those persons whom we think unworthy of it : And is in some so vehement , that it draws Tears from their Eyes , by reason that at that time , through the Affection of Love , a great quantity of Blood is propelled to the Heart , from whence many Vapours being emitted to the Eyes , and having their motion retarded with cold , are , as hath been several times already intimated , changed into Tears . XI . The Effects of Indignation . Indignation hath a great affinity with Hatred or Aversion , wherewith we are naturally stirr'd up against those that do ill . It is very often join'd with Envy and Commiseration , and the difference lies chiefly in the Object . Forasmuch as we envy those to whom any thing of good happens , and are fellow ▪ sufferers with those that suffer ill undeservingly . But our Indignation is against those only who do good turns to those that are unworthy of them . XII . Of Anger . Anger , which may be referred to Indignation , is the Aversion against those who have offered any Ill , or at least have design'd any Injury to us . This Anger is always attended by a desire of Revenge , which is the most impetuous of all Affections ; in regard the Hatred which is found in it , causes the Bilious Blood , which flows from the Milt , and from the little Veins of the Liver to undergo a very great Agitation ; which Blood entring the Heart , stirs up an extraordinary Heat , which is far more rigid and vehement than that which proceeds from Love or Sadness . XIII . A Twofold Anger . There are two sorts of Anger , one very quick , and soon breaking forth , and disclosing it self in the Countenance ; but this is of little effect , and with small labour allay'd : The other is not so soon discharged , but inwardly afflicts and stings ; and the effects of this are much more dangerous than those of the Former . To the first , those are Obnoxious , who either Love , or are indued with a good Nature ; by reason that this sort of Anger proceeds not from Hatred , but from a suddain Aversion which hastily seises them ; because those things which they think of , fall not out in the same manner as they imagin ; whence it happens , that as soon as they come to consider that those things which so moved them , ought not to have stirred them up to Anger , they are toucht with shame and Repentance , and condemn themselves for their rash and unseasonable passion ; whereas those that are affected with the other sort of Anger are more to be fear'd , discovering no other colour in their Face , but a pallid Hue , in regard the heat being drawn back to the Heart , they reserve themselves for revenge , and think of nothing but the time of Vengeance , and those circumstances which lead thereunto● ' This is a Vice peculiar to Persons of a Base and Abject Spirit . XIV . What Shame is , and Desire . Shame is founded upon Self-love , which proceeds from Opinion or Fear of Dispraise ▪ Desire , if it be more strictly inquired into , than commonly it is in Schools , is a certain sadness for a Good lost , and whereof there is no hope of recovery : For we are never afflicted with Desire , except for the loss of Goods sometime possest , and which we imagin so snatcht from us , as to be left without any hope of ever obtaining them again . CHAP. XIV . Whence the Natural Inclinations and Aversions of some Men arise . I. Various Inclinations are found in Men. HAving treated of those Passions of the Soul which are common to all Men , and which presuppose a Connexion of the Body and Soul ; it remains that we say something of the Inclinations of some Men , which are peculiar to themselves , and which have the Body only for their Principle . For there are found in some Men certain Affections , which are by Nature implanted in them , by which they incline to some things with a wonderful Ardour of Desire ; and are so abhorrent of others , as not to be able to indure the sight of them . So some Men have certain Meats in very great esteem and delight . Others on the contrary , have as much aversion to one thing or other : Many cannot endure the sight of a Cat , or the very presence of it in the same Room , tho' they see it not ; some cannot abide the smell of Roses ; and so for other things some have a Love , others an Aversion , of which neither can give any account . II. Antipathy and Sympathy are only words in the Schools . It is a common thing in Schools to have recourse to the words Sympathy and Antipathy , and thereby to pretend to give an account of Passions , which indeed they are wholly ignorant of , by saying that these things so happen , because there is a certain Agreement or Enmity in Natural things , by which they either Love or Hate . But this way of Philosophizing may be compared with a certain design or project for a piece of Painting ; as if any one should go about to give directions with a Pen and Ink , how the Sign of a City were to be painted , in what part of the Country the City was situated , what Posts were chiefly possest by the Besiegers , where the Enemies planted their Scaling-ladders to get over the Walls , how the Engines broke the Gates asunder , where the Pioneers sprung their Mines , with what Arms the Besieged defended themselves , and where they made their Sallies ; but after all should leave the whole Draught and Colouring to the Art of the Painter , yet nevertheless should take upon him to be the Author of this Picture of the Siege , to which he had contributed nothing but Names . So to assert that any thing is effected by a certain Virtue , and not to declare , after what manner it is done , is to my apprehension the same thing as to confess ingenuously , that he is totally ignorant of the matter discours'd of . III. If a Corporeal Action be joyned to any Cogitation , we cannot remember the one without the other . Therefore some other way must be tried for the finding out of these Ocoult Inclinations or Qualities which are observed in some Men ; which may easily be effected , if we consider but two things ; First that there is such a connection of Soul and Body , that when once we have join'd any one Corporeal Action to any thought , never after any one of them manifests it self , but the other attends it ; as we may observe in those persons , who being sick , have drunk up any Potion with much distast and reluctance , that they cannot afterwards feed upon any Meat or Drink that hath any thing of the relish of the said Potion ; but that the Stomach must needs have an aversation to it ; nay , cannot so much as remember that Aversion , but that the same Savour , which sometime offended the Tongue , must return into the Mind . IV. Sometimes it may be , that the same thing may be effected , yet the Actions of the Body not be the same . Secondly , observe that it is not always of necessity that the same Actions of the Body be joyn'd to the same thoughts . For those that speak English utter their conceptions by some certain words different from those by which the French express their cogitations , yet they both mean the same thing ; for no otherwise is DEUS conceived by an English Man , under the word GOD , than by a French Man under the word DIEU , both of them understanding the same thing , tho' by two different appellations : For as often as an English Man hears the Name of GOD , he presently apprehends thereby an Infinite , Eternal , Almighty Being , &c. the same doth a French Man when the sound of the word DIEU comes to his Ear. V. Whence Natural Aversions arise . These things thus briefly noted , any one may easily give an account of all those matters which he finds particular either to himself or others . The Aversions which are observed in some men , against some things , hence proceed , namely that , in the beginning of their Life , they have been hurt or offended by them : So the smell of Roses , might possibly have given to an Infant , while yet in the Cradle , some great Offence , or a Cat might have affrighted him , without any ones taking notice thereof , or the Party 's retaining it afterwards in memory . Some Aversions also are produced in us before we are born , since certain it is , that the Motions of the Mother have a very great influence upon the Motions of the Child in the Womb , so as that whatever is hurtful to the one , is also hurtful to the other . Thus James I. King of Great Britain , had so great an Aversion to drawn Swords , that he could not behold them without a world of horror , which is thought to have thus affected him , by reason that his Mother Mary , Queen of Scots , when she was great with Child of him , was frighted at the sight of a Sword , wherewith in her Bed-Chamber , and before her Face , in a barbarous manner , one of her Courtiers was stabb'd to death . VI. How it came to pass that K. James I. so much abhorred the sight of a drawn Sword. 'T is true , that it is no easie matter to determin the cause of this King's Horror upon the said occasion , since it is hard to conceive how the Image of the thing which was only transmitted through the Eyes to the Mothers Glandule , could light upon the Glandule of the Infant , whereas , as for other things , as the Odour of Roses , or the Savour of Meat , it may be aptly enough made our , since the Odour of the Roses , and the Savour'd Aliment might easily through the Pores of the Mother , reach to the Infant , since it is nourisht by the Mother , and both have a communion together by the Novel String . Yet it may be said that that Aversion in the King , might happen to him by the Mothers Eyes , because at the presence of so-horrid an Object , a Notable Mutation might be made in the Mothers Animal Spirits , by which the Infant she carried in her Womb was offended , by reason of the mutual Relation between the motions of them both . VII . Imagination alone can beget such aversions . Besides , there is not an absolute Necessity that the Object should be always present to our Senses , for the exciting of any Passion in us , since that can be effected by Imagination alone . For an Impression through the Arteries of a Woman with Child , may arrive to a certain part of the Birth , and there produce some Marks thereof . Whereupon it happens , that those Women who transgress their Nuptial Faith , and prostitute themselves to other Men , many times bring forth Children like to their Husbands ; namely , because the fear of being surpriz'd by the sudden arrival of their Husbands , causes them to have the Presence of their said Husbands perpetually represented to their Imagination , as hath been observ'd in the 9 th Book of our Natural History , in the Chapter of Imagination . VIII . Why of two Men beheld , we love one more than another . There seems yet to be a greater Difficulty , how to give an account , why of two Persons , whose Merits are equally unknown , we incline to Love one more than another . But this will not be any great Miracle , when we seriously consider that the Objects which affect our Senses , move certain Parts of the Brain , by the help of the Nerves , and make Pleits , which , without any farther concern of the Object , vanish ; yet so , as that the part in which they had been receiv'd , remains dispos'd for the receiving of Pleits from any other Object , which have any Similitude with the former . So when yet a Child , languishing with a long Distemper , and given over by the Physicians , I fell into the hands of a certain Woman , by whose Care and Industry recovering my Health , I contracted so intimate a Friendship with a Son of hers , that I could scarcely be divided from his Company , without much Regret and Impatience : Yea , after some Months , being carried home to my Parents , I perpetually languish'd with a desire of this my Little Companion ; nor put I any end to my Tears , till such time as he was restored to my Society . And when a few Months after , it pleased GOD to take him out of this Life , I continued to bear a singular Affection towards all Boys whatsoever , that resembled him in Countenance ; and to this very day preserve the same Affection to Children of the like Resemblance . IX . This Disposition is induc'd from Objects by the Senses , or from some other Cause . In like manner , when we Love any Body for any hidden Cause , it is more credible that it hence proceeds , namely that there is something in him , like to those things which were formerly in some beloved Object , tho' we know not what it is . And though doubtless that which thus allures our Affection , is oftner a Vertue than a Vice ; yet nevertheless , in regard it may sometimes so happen , that it may be a Vice , no wise Man ought to indulge to this sort of Affection , till such time as he hath well weigh'd the Merit of that Person , with whose Presence or Concernment , he finds himself so affected . DES CARTES , when a Child , as he himself writes to CHANUTE , loved a little Girl of the same Age with himself , that was Squint-Ey'd ; and by this means the Impression , which through the Sight was received in his Brain , was so joyned to the Impression which was also made in him , to move the Passion of Love , that even a long time after , as often as he lighted upon any who had the like sort of Eyes , he found himself properise to Love them above others , and for this very thing , because they had that Imperfection ; yet did he not know that this was the Cause of his Love. On the contrary , from the time that revolving with himself , he apprehended this Blemish to be an occasion thereof , he was no longer affected by it . CHAP. XV. Of the Immortality of Human Mind , and of its State after Death . I. Human Mind being Spiritual , cannot be destroyed . THat Human Mind is uncapable of Death and Destruction , its Nature and Functions clearly demonstrate : For whereas it is evident from what hath been often said , that the Soul is a Spiritual Essence and separate from all Matter , it must consequently of necessity be free from all Destruction and Corruption ; since nothing but what is Concrete and Compound can be separated , divided , or taken asunder . For Destruction is , as it were , a Separation , Dividing , or Parting asunder of those Parts , which before the said Destruction were held together , as it were , by a certain Link or Tye. II. Which is also made evident from its Functions . Nor do the Functions of the Soul less argue its Incorruption , as being Effected by no Organ of the Body , as is sufficiently made out almost throughout this whole Work ; forasmuch as it forms and proportions the Universal Natures of things abstracted from Matter , which cannot be the Work of a Corporeal Faculty . For a Power or Faculty subjected to a Material Organ , receives the Qualities and Forms of things after a certain Corporeal manner What therefore comprehends Forms in a Spiritual manner , u●es no Instrument of the Body . Neither indeed are the Principles imprest upon the Mind , or the Rudiments of Cogitation assign'd to out Intellect , Mathematical Demonstrations , or Certain and Fix'd Judgments , any Corporeal Acts or Productions of Imagination . But nothing Incommutable or perfectly Single ; nothing Eternal , nothing Universal and Abstract is perceived by the Power of Imagination ; whereas all Bodies are subject to mutation , place , and time . III. How Compounds and Simples are said , to lose their Existen●● ▪ Now the better to support this Verity with Reasons , we must suppose , that of those things which perish or cease to be , some are Simple , and some Compound . The Compound are said to lose their Existence , when the Parts which concur to their Composition are separated from each other . As a Man is said to Cease , when Soul and Body , of which he is compos'd , are separated . Whereas the Simple can no other way cease to be , but by Annihilation , as they could no other way be produc'd but by Creation . And since Creation , as also Annihilation , are both beyond the power and ability of Nature , they can no way be destroy'd by any Creature . But it is evident , that the Soul is a thing purely Simple , since it is the only Subject that entertains Cogitation or Thought , together with the various Modes of Cogitation , and consequently the Capacity of being destroy'd , is Naturally repugnant to it . IV. Since the Body perishes not , much more must the Soul have an Existence And this will appear more evidently , by comparing the Soul with the Body . Certain it is , that the Body which gives place in dignity and perfection to the Soul , is not reduc'd to Nothing , when the Soul is separated from it : How therefore can the Soul , which is more noble and more perfect be thought to be annihilated when the Body is separated from it ? Since indeed , no Reason can be brought for the duration of a Material Substance , which may not , by a more forcible Right , be apply'd to Human Mind . If we have recourse to the Evidence of Sense for the Consistence of Body , it cannot be maintain'd of all its Parts , since very many of them , into which it is resolv'd , are undiscernible to our Senses . Neither is the perception of our Senses so efficacious a means to demonstrate the Existence of Bodies , as the Reasons henceforth to be produc'd , are for asserting the Immortality of the Soul. V. Human Mind can be destroy'd by no Created Being . If it be Objected , That GOD by his Power can annihilate all Souls whatsoever , and that it is through his Preservation alone that Souls are said to be Immortal . This we are ready to confess , as acknowledging that GOD alone is a Being wholly Independent , Eternal , Necessary , &c. and that there is nothing Existent in Nature , but only so long as he pleases . So that we have nothing now to do , but to make it out plainly , that Human Mind is of such a Nature and Quality , that it cannot be corrupted or destroy'd by any Created Being , which is a sufficient Ground for it to be call'd Immortal . For it being Undeniable , that GOD is all Wise , all Good , and all Constant ; and Human Soul , the Noblest Workmanship of so great a Maker , and the Image of him : Who can imagin or believe , but that it must needs be far from the Mind of so Wise and Constant a Maker to Create so Glorious a Work , and afterwards to destroy it ? True it is indeed , and not to be gainsaid , that GOD by his extraordinary Power , can destroy the Human Soul consider'd , according to its absolute Esse or Being : But it is repugnant to Reason , that he should destroy it by his ordinary Power , which is sufficient to make the Soul Immortal . For when we treat of the Immortality of the Soul , the Question is not , Whether GOD , by his Extraordinary Power can destroy it ; but whether it can be destroy'd by Natural Causes , and by the ordinary Power of GOD. VI. The Corruption of the Soul , follows not from the Corruption of the Body . Moreover , when a Man dies , Death happens to the Body upon this occasion only , namely , because some of its Parts are divided , and its figure changed . But the division of Members , or change of Figure , no way concern the Mind , in regard it is indivisible , and affected with no Figure . Who therefore can believe that the Soul , which is Inextense , can , for so slight a Cause , as is the Change of the Body , perish or be annihilated ? In the next place , this sort of Annihilation hath not yet been found in Nature : Nor can it be made out by any Argument or Example , that Substance can perish Wherefore , seeing that Human Mind is a Substance Independent of the Body , and not any way subject to the Mutations which are made in it , we conclude , that it may Exist separated from it , and by consequence , that it is Immortal . VII . There is no Cause capable to destroy a separate Soul. As to what some say , That hence may indeed be inferr'd , that the Soul may possibly subsist separate from the Body ; but that it will not last so Eternally . To this I Answer , that admitting one , the other must of necessity follow , in regard no Cause can be assign'd , which can destroy it in its state of Separation , since at time it is free from Matter , which alone is obnoxious to Change. VIII . Arguments of Lucretius against the Souls Immortality . I know that there are many Arguments heap'd up by LUCRETIUS against the Immortality of the Soul. But they are of no weight against those who distinguish Soul from Body , and assign them contrary Functions . For if the Soul seem to be affected with the Diseases of the Body , to be disturb'd in immoderate Drink , Epilepsy and Phrensie , to be as it were lost in swouning Fits. This happens , because it is joyn'd to the Body , and makes use of it as its Instrument in performing most of its Actions . For as a Scribe furnish'd with a well-made Pen makes neat Letters or Characters ; but that Pen being worn out with long use , he can no longer Cut his Letters , as before : So the Soul lighting upon a weak and infirm Body , ceaseth to perform its wonted Office , and remains as it were benum'd , sluggish and altogether unactive . IX . Diseases are not to be attributed to the Soul , but to the Body . This change therefore is not to be imputed to the default of the Soul , but of the Body , by whose help , so long as it is tyed thereunto , it operates . So that in a Phrensie or Lethargy , it is not the Soul which is distemper'd , but the Brain : The Instrument fails , so the Functions are at a loss . In like manner Drunkenness is not to be attributed to the Soul , but to the Body ; forasmuch as the Brain being unloaded of its Vapours , the Soul is recover'd and comes to it self again , and performs its Offices , as before . X. The State of the Soul , after its Departure from the Body is unknown . But the state of the Soul , after its Departure from the Body , is altogether unknown to us , since it wholly depends upon GODS good Pleasure ; nor can we know , but by Conjecture , how it will then use its Faculties . It is but a rash Conceit in those , who ascribe such Perfections to it , as they are uncertain of , and measure its Felicity by their groundless Apprehension , since without Revelation we can have no assurance thereof , except that it follows necessarily from its Nature : Only thus much we may know , viz. that it will be Immortal , by reason that since it is a Substance distinct from the Body , its destruction follows not from the dissolution of its Mate , so that it will always persevere in its Nature , that is , will always Think . XI . The Soul after Death , will not be sensible , nor remember . We may likewise know , that it will have no commerce with External Objects , and that nothing of Body whatsoever can act upon it , because only its Union with the Body renders it capable of receiving the Species and Actions of Objects ; so that it must needs be depriv'd of all Sensibility , and be destitute as well of Memory , as Imagination , in regard those things depend of the Body , and are chiefly conducible for the safeguard and knowing of the State thereof . Altho' it is not to be denied , but that it will perceive many Objects , by the force of Intellect , which will render their Notions more distinct and clear , than those which it had , when it was conversant in the Body . And there will be no Obstacle , but that the Soul may reproduce those Notions of things , which it had in this Life ; by which it will come to pass , that it may the more easily remember them , forasmuch as it will occur to it , that once it had them . XII . The Soul will more clearly know Objects . So that in regard no Bodies can any longer act upon it , there will be an evident consequence , that in that State and Condition , it will be absolute Mistress of its own Thoughts , and will not think , but of such things as its own Will and Pleasure shall be to think of ; except by chance the Almighty Maker of All things , or other Minds or Intelligences with which it converseth , create a new Thought in it . But so long as the Soul is separated from the Motions of the Body , and nothing hinders , but it may remain employed in its own Cogitations , it will the more diligently , and with greater attention perceive things Objected to it , and will the more acutely advance in Sciences . XIII . Will every where accompanies the Mind . The like may be said of the Souls Will and Faculty of disposing it self . By reason that when it shall be free from all Commotions , to which before , because of its Commerce with the Body , it was obnoxious , it will with the greater liberty execute its own own Affairs , and will the more easily expel the Doubts , which are an Obstacle to its Determination . Yet of it self it will not be altogether free from Errour ; because in regard its Intellect is Finite , and penetrates not into all things , it may be deceiv'd in its Perceptions , tho' it be not so prone to Errour as before . Forasmuch as being no longer possest by any Prejudices , and being free from Affections , it will the more easily gain this Point , not to be obliged to give assent to those Things which it knows not clearly and distinctly , and by this means it will be less liable to Deception . XIV . It is Doubtful whether the Mind can , after Separation , move another Body . But it is not so apparently determin'd , Whether the Mind will , after the said State of Separation , retain the Power which before it had of moving a Body ; since indeed such a Faculty doth not necessarily follow the Nature of a Finite Being , neither indeed is the said Faculty granted to its Will , except so far as it hath pleas'd its Maker , that is , so far as he hath Decreed , that its Moving Power must depend upon his Will. But since it highly conduceth to the extolling the Clemency of Almighty GOD , that his Works should be manifested to his Creatures ; it is most probable , that he will conserve this Moving Power in Souls , and give them Capacity to joyn their Cogitations at pleasure to certain Bodies , and in such a manner , as it shall desire to move and know them . XV. The Soul , after Separation , will be capable of no Pain , as from the Body . As the Mind or Soul is all Spirit , it will no more after Separation be capable of Joy or Pain , according as they sprung from the Affections of the Body ; but only of Joy and Pain , which proceed from the Intellect . But if ever the Mind chances to suffer any thing from a Corporeal thing , it must be acknowledged , that it must consequently of Necessity be United thereunto by the Divine Power , as it was upon Earth ; so as that its Cogitations must be connex'd to the Motions of the said Body , and according to the Measure of that Impulse , it must suffer from it more or less . And upon this account it is not improbable , but that the Fire of Hell may act upon the Body of the Damned . XVI . Other things are hid from us , except what is revealed by Faith. Other things which are attributed to the Soul , after its Departure from the Body , are uncertain and altogether depend upon the Goodness and Mercy of Almighty GOD , whose Arcana or Secret Counsels , to go about to search into , is both Rash and Profane . Hence it is that our Illustrious Philosopher , in his Epistle to the Princess Elizabeth , thus utters his Mind about the State of the Soul separated from the Body . But as to the State , saith he , of the Soul , after this Life , I know far less , than Sir KENELM DIGBY : For omitting those things which Faith instructs us in , I confess indeed , that we may Conjecture many things by the meer Dint of Reason , upon which we may sufficiently flatter our selves , and build mighty Hopes ; but can gather nothing of Certainty . The Tenth Part OF THE INSTITUTION OF PHILOSOPHY . VIZ. ETHICKS , Or , The Right way of Ordering the LIFE of MAN. A PREFATORY Discourse . Of the Dignity and Vse of Ethicks . I. The Dignity of Ethicks above other Sciences . THO' all Philosophy was Invented for the Good of Man , and there is no part of it , which is not conducive to his Natural Felicity ; yet doth ETHICKS deservedly take the first place amongst them all , as excelling them , both in Usefulness and the Worthiness of its End. For whatsoever other Sciences prescribe , is only an Exercise and Accomplishment of Human Wit ; whereas the Rules of Ethicks are the Remedies of the Soul. Logick may pride her self , for that her Rules direct and guide the Operations of the Mind , and by putting a difference between Truth and Falshood , illuminate the Understanding , and prevent it from falling into Errour : But Ethicks , taking a higher flight , enquires into the Nature of what is Good , persuades the pursuit of it , and having discover'd its Charms and Amiableness , allures Mortals , and enflames them with the Love of it . Natural Philosophy may boast her searching into the Essence of things , and that by penetrating all the Secrets of the World , she discerns those hidden Properties that escape the most piercing Eye : But Moral Philosophy , pursuing a more Noble Game , teaches us to subdue Monsters , to tame our Passions , and to be Victors over them . Let Metaphysicks please her self , that mounting up to Heaven , she takes a view of Intelligences separate from Matter , and by a daring Undertaking endeavours to discover the Divine Majesty , Power , and Unity : Whilst Ethicks with much more certainty displays the Honour that is due to Angels , and the Worship we owe to GOD ; and by manifesting to us that Supream Essence , as the first and chiefest of all Beings , doth not only put us in mind of the Obedience and Observance we owe to Him , but also forceth us to believe it most due to Him. II. It is a more excellent thing to pursue Good ▪ than Truth . Who is there amongst Men , that doth not prefer the Love of Good before the Love of Truth , and that would not rather embrace Vertue , than to please himself with the barren Knowledge of it ? I confess it is a Noble thing to understand the Affections of Material things , and to search out the Nature and Properties of all the sorts of Bodies contained in the Universe : And yet who must not own , that it is far more glorious to put a Curb in the Mouth of Concupiscence ; and to undervalue all the gay Bubbles , which almost the World doth admire and doat upon ? What can be imagin'd more great and wonderful , than to wrestle against Fawning Lust , and to retort the Darts of this Domestick Enemy upon himself ? Is it not the express Character of a great and sublime Soul , to despise Honour , and to prefer a mean and low Estate before the Pleasures of the Court , and the top of Grandure ? All those are the Effects of the good Counsel Ethicks gives us , and all the great Qualities we so much admire in Men , are but the product of her Precepts . And therefore the Ancients look'd upon that Philosophy to be in a manner fruitless and to no purpose , which did not restrain our Passions ; which did not put us upon the practice of Vertue , nor insinuate into our Minds the wholsom Laws of Nature . Book . 1. To front Part 10. ETHICA G. Freman . In. I. Kip Sculp For as that Art of Physick is of no use , which cannot remove the Disease of Mans Body , or teach us how Health may be preserved or restored ; so there is little or no advantage in that Philosophy , which doth not remove the Maladies of the Mind , and which like some Trees produceth nothing but Leaves , and pleaseth us only with the shade of Words . This commendation doth only belong to Ethicks , who like a Mistress of Manners informs Men what they ought to do ; and is indeed the discipline and exercise of Actions , rather than of Words or Notions . If we take a view of the extent of her Power , it is she that first built Cities , and reduced People of different inclinations into Societies . She it is that instructs States-men , and teaches them the Art of Governing , shewing them how they may avoid the Envy of those that are governed . She it is that informs Husbands , how they are to behave themselves towards their Wives , with what care they are to mind the Education of their Children , and to govern both the one and the other , without injuring them . She it is that prescribes Rules to Masters , how to govern their Servants : In a word , there is no manner of Life , which is not directed by her advice , and which doth not borrow the Rules of Governing and Obeying from her . IV. What things are to be handled in this Tenth part . In order therefore to the more distinct discovery of the end of Moral Philosophy , it will be worth my pains in a few Words , to declare what I intend to treat of in this Part , and to lay open the whole Order and disposition of this Work. First , I intend to begin with the Nature of the Summum Bonum or Highest Good , and to shew wherein it precisely consists ; next I shall proceed to the Definition of Vertue , which I distribute into two Parts . V. The division and Nature of Vertue . One of these , named Prudence , is the Directive , she that giveth Instruction . The other are the chief Doers , employed in the making men vertuous . The First whereof regards our selves , viz. Temperance and Fortitude . The latter regards others , viz. Justice towards GOD , and this is Godliness or Religion . Men , which is Benevolence and Beneficence . Neither have I unadvisedly resolved upon this Method , forasmuch as the Vertues are a help to us , in the constant prosecution of this Highest Good , and as so many steps , whereby we raise our Souls to that which is Worthy and Honest . And having done this , I proceed to the use of the Passions , as being the Matter for the exercise of Vertues , and whereon they chiefly exert their Activity . To these I add a few Chapters of Human Actions , wherein is chiefly treated concerning the Liberty of the Will , whether it belong to Man , and whether it be consistent with the Knowledge and Power of GOD. Upon this occasion also , I enter upon the examination of the Goodness and Evil of Human Actions , and when they may be said to be conformable to right Reason , and when to thwart and cross the same . And Last of all , I shut up this discourse with the Duties of Man in general , and of a good Citizen in particular ; in which two considerations , all that belongs to Man may be comprehended . I would also have the Reader to take notice , that in this Treatise I follow the Sentiments of DES CARTES : And tho' he hath writ but litle concerning Moral Philosophy , yet I have a mind to raise this structure upon the Foundation he hath laid , and from what he hath Writ concerning the Soul of Man , and the Passions to discover his Sense of Moral Matters . CHAP. I. Of the Nature of Ethicks , and the principal Parts thereof . I. The Certainty of Moral Philosophy . FOrasmuch as ETHICKS is a part of Philosophy , and the Directrix of Human Life , accordingly she derives her certainty from her own Principles ; which do so much conduce to the obtaining of her end , that without their assistance , Goodness and Vertue can never be had . For as PLATO well observes , it is not by an impulse of Nature only , or by Divine choice and favour , that Vertues are acquired , and Vices banished ; but it is necessary to call in Science , or rather the Art of doing well , to our assistance , that by her Rules and Directions , we may be exercised to good manners , and the inborn Seeds of Vertue , that lye buried in us , may be cherished and spring forth . And if at any time some have been known to arrive at the perfection of a Vertuous Life , without the precepts of Ethicks , yet must not we therefore deny her to be an Art ; no more than we refuse the title of Art to Physick , tho' sometimes we may recover our Health without it . II. Tho' Ethicks in it self be very familiar , yet there are but few that agree in explaining of its Nature . Some think it is but a small thing to undertake the Explications of the Precepts of Ethicks , because the Rules conducing to the right deportment of our Lives , seem so very notorious and familiar , and common to all Nations . Who knows not , say they , that Vertue is to be had inesteem and practised ; that Parents are to be obeyd and honour'd ; and that GOD , whom all adore , is to be beloved above all things ? It is proper indeed , to form Rules concerning things we are ignorant of ; but as for Matters that are known to all men , these are best left to every ones owns Sense and consideration . For my part , I should be apt enough to be of their mind also , if all men did agree universally in the Principles and dictates of this Art , and if all without exception embraced , what seems evident to some . But alas , most men now adays are so infected with the itch of contradiction , that they many times start , and maintain new Opinions only to gratifie their wrangling and disputing Humour . As appears more particularly in this Matter before us , for tho' the name of Moral Philosophy be tost in the mouths of all men , yet there are but few that concur in their Sense about the nature of it ; and notwithstanding it be very dangerous to mistake in the forming of our Manners , and the due regulating of our Lives , yet many chuse rather , to question the truth of Moral Dictates , than to want an opportunity of thwarting and contradicting the Sentiments of others , tho' never so clear and incontestable . But may I never be tainted with this Evil , whose aim only is , to pursue Truth , not concerning my self about what others teach , or what Opinions they espouse : My design only being to explain what DES CARTES hath left in writing about these Matters , and to pursue his sense and meaning . III. The Definition of Ethicks . Wherefore from his Method of discoursing aright , I gather this definition of Moral Philosophy : viz. that it is a right way or course of thinking , in order to the obtaining of Human Felicity . Or a Discipline directing man , in his voluntary Actions , so as to live well and happily . In the name of Discipline , it agrees with the other parts of Philosophy , but is distinguisht from those Arts , which leave behind them some perceptible Matter , when the Action is over . For Moral Philosophy is not conversant about any External Matters , nor considers Bodily Actions ; but is intirely employed and concern'd about the inward Operations of the Will , inasmuch as they are submitted to Right Reason , and by it directed to that which is Good. Wherefore to constitute its difference from other Arts , it is added to live well and happily ; that from thence we might gather , that the Mind of man is perfected by Moral Philosophy , and directed by its precepts to act rightly , and comporting with reason . IV. The Object and end of Ethicks . The Object of Ethicks is right reason , which is to be exercised towards all persons and things , and in all our Actions , and the several circumstances of them . Or if you will , it is man himself , inasmuch as he can and ought to be directed to an Honest , that is Moral , Good , according to certain reason . And the end of Ethicks is to perfect man , and make him happy . For if a man be steadily conformable to right reason , in all circumstances of Persons , Things and Human Actions , he is arrived to the highest top of his Moral Perfection and Blessedness . V. What Manners are . The word Ethicks , signifies nothing but Moral , or that which concerns Manners ; and accordingly Ethicks takes upon her to frame and direct our Manners ; which are nothing else , but a way or course of Living confirmed by custom ; or a certain accustomedness of Acting , or repeated Human Actions , which when they are conformable to right reason , are called Good manners ; but if contrary to the same , Vitious and Wicked . VI. Ethicks does not so much consider External as Internal Actions . And altho' many Human Actions are External , and such as cannot be performed without the help of the Body , as Liberality , which communicates her Benefits to others ; Justice which gives to every one his due , and other such like which are free , and at the command of the Will : Yet are not these Actions primarily considered by Moral Philosophy , but secondarily only , so far as they are the effects of Internal Actions , and the product of the Will. For the Duty of Liberality doth not principally consist in the relieving of our Friend , but in the care and desire we have to assist him , which is the peculiar property of a generous and vertuous Mind . Neither can we suppose that the restoring of a Pledge or Trust , or the paying of a Debt , doth fulfil the whole requiring of Justice ; but rather that firm purpose of the Will , whereby a man unalterably resolves to restore the Trust that is committed to him , and not wrong any by withholding their due from them . Wherefore outward Actions may be said to be the Instruments only , whereby the Will executes her decrees , and performs what she hath resolved upon . And tho' all particular Actions be free , as being performed or omitted according to the pleasure of the Will ; yet it is not the concern of Ethicks to consider particular Actions , but only the Actions of the Will in general , to which it universally prescribes , that GOD is to be loved , Vertue to be embraced , and Vice to be avoided , &c. VII . Moral Philosophy is to be accounted amongst the practical Sciences From all which it is evident , that Moral Philosophy is not meerly Speculative , or consisting in the sole contemplation of Manners ; but that it is to be reckoned amongst the active Sciences , its work and business being to form our Manners , to instruct us to Vertue , and prescribe the Rules of well-doing . VIII . Of the three parts of Moral Philosophy . Moral Philosophy is commonly divided into three Parts , viz. into Private , Domestick and Politick . For man may be considered under various respects ; First , as he is a particular man , that is , as he takes care of himself , and provides for his own Good : Secondly , as he is the Master of a Family , and performs the Duties incumbent on a Master or Parent ; and Lastly , as he is concern'd in the Government of a City , or Commonwealth , and the giving Laws to others . All which diversities of Offices or Duties , are directed by so many several parts of Moral Philosophy . The Private , which some call Monastick or Solitary , is that part of Ethicks , which gives Rules how men in their singular State ought to behave themseves : The Domestick or Oeconomical , is that which lays down Precepts , how Families may be rightly ordered : And the Political teaches and instructs us in whatsoever conduceth to the good of Societies , and how both Magistrates and Subjects , are to behave themselves in their several Stations : For seeing that man stands in need of the Help and assistance of others , as well with reference to those things which are the necessaries of Life , as those which are the comforts and conveniences of it ; he is assisted in those things which are necessary to Life by his Family , and by the Society or Common-wealth , with that which conduceth to his safety and well being . IX . The Domestick and Political part of Ethicks are reducible to the private . But whatsoever Modern Philosophers may talk of this distribution of Ethicks , it seems clear to me , that the two latter parts of Moral Philosophy are contained in the former , and that if a man be only instructed in good Manners , this is sufficient to qualifie him , for the well and happy governing of his House or Commonwealth . For it is still a Private man , that manageth matters , whether in a Family or Commonwealth , and who certainly will be by so much the more fitted to discharge his Duty and Trust in either , by how much greater command he hath got over his Passions , and the more eminent he is in Vertue . For the Vertue of a Private person , doth not differ from that of a publick and Political ; no more than the Felicity of the one , differs from that of the other . For whatsoever the Private part of Ethicks professeth , the same is with equal Right contained in the two others , viz. the Science of Life , besides which nothing is taught , or contained in the Oeconomical and Political . Neither can we assign any other difference betwixt them than there is , in the several Pipes of Wind-Engines or Instruments , in which one and the same Wind produceth several Sounds . In like manner all men receive from the Private part of Moral Philosophy , the Rules of living well and conformably to reason , notwithstanding that as the greater Pipes of an Organs yield a deeper Sound , so those who are in high and honourable places in the Commonwealth , may have a more large field wherein to exercise their Vertues , and more ample matter , of giving illustrious and signal instances of their Firm Probity . CHAP. II. What Good is , and how and why the same is desired . I. Nothing is Good but with reference to another . BEfore we proceed to explain the nature of Good , and to discover that which is the desire and delight of all men ; we are to take notice , that a thing considered in it self , cannot be said to be either Good or Evil , but only with reference to some other thing , to which it is conducive to attain that which it pursues , or on the contrary . Thus Venom is good and wholesome to a Serpent ; but hurtful and destructve to man. And therefore , if we except GOD Almighty only , who doth good to all , and preserves the Being of every thing ; there is nothing in the World , which in a different respect may not be accounted Good and Evil. But this being so , a difficulty seems to arise , how then we may come to know and perceive that which is Good , and how to distinguish it from that which is Evil. II. Good cannot be defined with the reference it hath to our Appetite or desire . Some define the Essence of Good by our inborn Propensity , or Inclination ; as supposing that to be Good which excites our desire , and allures us to embrace and pursue it . But these according to my Judgment , do not exactly enough lay open the nature of Good. For that Inclination whereby we are carried out to desire that which is Good , supposeth it to be something that is suitable to our Nature , so that the thing must be endued with the formal reason of Goodness , before ever it can move our Appetite . For Appetibility or desirableness , is nothing else but an Affection or Property of that which is Good , and which flows from its Essence . Now it is inconsistent with the Rules of true Definition , to make the proprieties of things to constitute the natures of them . III. The true Definition of Good. Good thefore may better be defined thus , viz. that which is acceptable and suitable to every one . And that this is a true Definition , will appear by an enumeration of the several general heads of Good things ; for all Good is comprehended under one of the three heads of Honest , Pleasant or Profitable . An Honest Good is that which is agreeable to right reason , and is desired for its own sake : As Vertue , Piety , to love Good , to honour ones Parents , to relieve the Poor , to curb the lusts of the Flesh . Pleasant Good is that which is desired for delights sake ( yet without thwarting the Honest Good and Right Reason ) as Musick delights the Ear , a curious Picture the Eye , and the conscience of Good deeds , does afford innocent pleasure to Mind or Body . Profitable Good is that which is Good , in order to some other thing , for the acquiring whereof it is desired , as Mony , Riches , &c. But not one of all these is called Good , save only in reference to its being suitable , or agreeable to some other thing . The reason whereof is this , because the operation of the Understanding , must go before the Act of the Will ; and therefore it is necessary that the Object be first known to be agreeable to a reasonable Nature , before that the Will can be carried out towards it . IV. There are two sorts of Appetites . Now it will be easie to shew how , and in what manner things are carried out towards that which is Good , that is to the desire of that which is agreeable to , and convenient for them , if we consider the two Appetites in Man , whereof the one is call'd Innate , the other Elicit : The Innate Appetite is an inborn inclination , whereby a thing is carried towards that which is convenient for , and acceptable to it . Thus the Peripateticks generally hold , that the Fire by a natural propensity tends upwards ; and that Plants attract a suitable Aliment out of the Earth . Tho' indeed this seems very difficult to conceive , that things utterly devoid of Sense and Knowledge should desire any thing , or be endued with any propensity . We cannot deny , but that in things of this nature , there are some certain Laws of Motion , appointed by the Author of Nature , which may be said to be a kind of inward propensions ; as that every motion affects to pursue a right Line ; but we yet must have a care , not to attribute any Appetites or Inclinations to things , when we search into their more hidden Qualities , for this would be to confound the Attributes of the most different things . Wherefore Appetite is only to be attributed to Man , it being an Act of the Will , whereby upon previous Understanding , it is carried out to that which is convenient for it . V. In what sense Inanimate things may be said to desire things . Wherefore when I say , that Inanimate things have an Appetite , I would not be so understood , as if I did attribute any Knowledge to them , by which they desire things grateful , and avoid the contrary ( for Knowledge is no where but in the Mind ) but only that by an infallible necessity they follow the guidance of the Divine Reason , and indispensably obey his Will ; in like manner , as an Arrow by a skilful Archer is guided to the mark , with out having any Knowledge or Perception thereof : Inanimate things therefore pursue that which is Good by a natural impulse , and reach it by means of Local motion , which the great Creator of the Universe hath furnisht them with . Man alone desires Good from a preceding Knowledge , because he only is possest of a Soul , whose peculiar nature it is to Perceive , Will and Imagin . VI. How it comes to pass that Man sometimes desires Evil. But it may be enquired , seeing that Man doth not pursue that which is Good , without a foregoing knowledge of it , how it comes to pass , that he sometimes goes in quest of the contrary , that is , Evil ? To which I answer , that Evil is never desired by Man ; but whatsoever his desire is carried out after , the same is always proposed to him , under the likeness and appearance of Good. For tho' it may be , that which he hankers after , be contrary to Reason , and the Law of GOD ; yet is the same always represented to him as some Pleasurable or Profitable Good , and is consequently allured to it , under the notion of its being suitable to him . VII . Why all Men , none excepted , desire Good. It will be sufficient for the explication of the Nature of Good , only to discover the cause , why all Men promiscuously desire that which is Good , and are byast towards it , by an inborn propensity . To do this will be very obvious , if we remember , that GOD is the supreme Good , comprehending all the Perfections that can be conceived by the Mind of Man. Wherefore when any other Good is represented to us , we desire it upon no other account , but as we apprehend it to partake of the Divine Goodness , because by its Essence and Existence it bears some kind of Resemblance with him . And hence it is that no Rest can be found , either in the Possession of Good things , or in the Contemplation of Truth ; because nothing created can equal the Idea we have of Good and Truth : tho' in the mean time we snatch at some imperfect Images and Glances of it , whereby our Love is inflamed to attain the Supream Good. This Affection also is sometimes kindled in us from the Diversity of Objects , as being apt to imagin that we make some approaches to the infinity of that Highest Good , by enquiring into the Nature of new Objects , and by extending the Bounds of our Knowledge and Enjoyments . Accordingly it happens sometimes that Covetous Misers , quitting their niggardly Companions , frequent the company of Liberal Persons ; and that such as are Sad , keep company with those that are Merry and Jovial ; and those that are Angry and Froward , with persons of Meek and Quiet Spirits ; as being sensible of an insufficiency in themselves , and that they stand in need of the help of others towards the obtaining of their proper Good. VIII . In every Desire there is some appearance of the Supream Good. Now in all these there is somewhat of a tendency towards that Highest Good : for Ambition doth not proceed from an Inborn desire of Honour ; nor doth the concupiscence of Love proceed from Nature , but from a Pravity of Manners , whilst they are panting after that Immense Good , and affect the Possession of that which is infinite . For the desire of that which is Good , is , as it were , the Great Artificer that endeavours to make Created Beings conformable to their first Principle and like unto him . CHAP. III. What the Highest Good is . I. All Men aspire after Happiness . THERE is nothing sticks so close to the mind of Man as the desire of Blessedness , and tho' sometimes we can hardly obtain or reach it , yet we are still in pursuit of it . For all the other motions of our Mind vanish away by degrees , and in process of time are lessened and weakned . For we are not always taken with the splendor of Honours , or inflamed with the love of Riches ; and Pleasure or Voluptuousness at last loseth all its charms , whereby it formerly captivated us , so that we loath the Objects we before panted after . But the desire of Happiness admits of no vicissitude , but as long as we breathe , or our Hearts do beat , excites us to the pursuit of it . II. What the Highest Good is . This is that in which all People do agree , that they desire to be Happy ; and how greatly soever they may differ in their Tempers and Inclinations , yet they all unite in this Passion , that they all affect to be happy . And accordingly the Ancients called the Highest Good the last of all ▪ desirable things ; forasmuch as the said Good is every way perfect and absolute , which being once attained , there remains nothing further to be desired The SUPREAM GOOD therefore is that Mark which all our Words and Deeds tend to ; and as Seafaring-men , direct their Eyes to the Pole Star , so likewise is our Soul to be directed to some end , to which all our consults and deliberations of living well , and acting aright must tend . III. Why there be so few that know it . Tho' almost all Philosophers have written concerning the Highest Good , and have left great Volumes on that subject to Posterity , yet were they never more mistaken in any thing , than they have been in that point , insomuch that I dare affirm , that excepting only a few , they were never more unhappy in any of their undertakings than in this research after the true Nature of Human Felicity . I conceive that their mistake herein was caused by reason of their not duely considering what properly belongs to Man , or for want of accurately distinguishing between the functions of the Mind , and the motions of the Body ; by which means , slighting the Inhabitant , they only had regard to his Home or Lodging . IV. The Supream Good defined . The Highest Good therefore of this Life , is that which makes Man , here on Earth , most perfect and happy . And therefore for its sake only all other things are desired , whereas the Supream Good is desired for its own sake . We seem to express , at least , a kind of confused knowledge of this Good , when we prefer one thing before another : for when-ever we choose one thing rather than another , we always suppose the one to be Better : now that only is so which comes nearest to the Best . So that it appears we have an indelible notion of the Best , that is , Supream Good imprest on our Minds . V. The Differing Opinions of the Antients concerning the Nature of the Highest Good. Some have defined the end of all our Actions to be Pleasure , the desire whereof is born with us , as well as the aversation of Pain ; of which number was ARISTIPPUS the Philosopher , and the CYRENAICKS . Others determined Blessedness to consist in the enjoyment of a concourse of all Good Things ; and that no Man was happy , that did not possess the affluence of them all . And accordingly , for to constitute their Happy Man , they require that he have Friends to advise and assist him ; that he have Riches for necessaries and convenience ; Power , whereby he may command others , and make them serviceable to him ; Nobility , to make him conspicuous and eminent ; yea , and Beauty too , with a fruitful Wife , and wel-mannered and witty Children . But , as I said before , I suppose that these Philosophers , who placed Happiness in these things , never well considered the Nature of Man , nor what belongs to his Mind , and what to his Body . For had they lookt upon the Mind , as they ought , to have been the chief and principal part in Man , they would never have placed his Felicity and satisfaction in things that gratifie his outward Part , seeing that true satisfaction appertains only to his Rational and inward Part. But forasmuch as the dispute amongst Philosophers is not so much about the Nature of Felicity , as the Causes of it , that is , the means which lead to it ; it shall be our care chiefly to discover , whence Happiness doth arise , and what that Supream Good is , by the enjoyment whereof we are made Happy . Book . 1. Part. 10. Chap. 3. Lens Inv. I. Kip Sculp . To the Worshipfull Captaine William Wallis of St. Martins in the Fields in the County of Midles ex This Plate is humbly Dedicated by Richard Blome . CHAP. IV. That the Good Things of the Body conduce nothing to Mans Happiness . I. Aristotle ranks Health amongst the most considerable Good things that concur to Mans Happiness . THE Good things of the Body are commonly reduced to these three , viz. Health , Beauty , Pleasure ; in the enjoyment whereof we are commonly esteemed happy . For if we consult ARISTOTLE , he will tell us , that Health is as great a Good to us , as a calm Sea is to the Birds called Halcyons ; who , when the Face of the Sea is smooth , and not wrinkled with Winds , with great ease and delight dispatch their affairs , sit brooding upon their Eggs , hatch their Young , cherish and feed them : and that much the same pleasure and ease attends those that have a firm and healthful Constitution of Body , whereby they with chearfulness exert all the functions of Life , and with a ready activity discharge all the Offices incumbent upon them . For when the Body is sick and weak , who knows not that the Briskness and activity of Man languisheth , and that the very perceptions of his Senses prove burthensome and irksome unto him ? His Ears loath the sweetest Musick , his Sight is tired with the most Beautiful and charming Objects , the Conferences of his Friends prove tedious , and by an utter dislike of all things , he sometimes becomes intolerable , even to himself . II. If Health were the peculiar Good of Man ▪ Beasts would excel him . But , notwithstanding all this , far be it from us to constitute the Good of Man in so mean a gift of Nature , and to make his Felicity to depend on his Body . For if we place the chiefest Good in a due state of the Body , shall we not make Beasts more happy than Man , who generally enjoy a more firm and vigorous health , and more perfect Senses ? Whatsoever conduceth to the Happiness of Man , must be peculiar to him , and not common to him with the Brutes . Besides , the things that constitute the Highest Good , must be stable and unmoveable ; but what is more weak and tottering than Health , which is overturn'd with the least fit of Sickness , and which as years encrease upon us , decreaseth continually ? That which is not in our Power , but depends on another for its subsistence , doth not deserve the name of Good. Do'nt we see frequently that the most Learned and most accomplisht Men are the most weak and sickly ? And that the things which promote and assist the mind , are hurtful to the Body ? Are not Studies , which inform and enlighten the Mind , and inflame the Will , prejudicial to the good Temperament and State of our Bodies which they alter and weaken ? III. Beauty is no part of Mans Happiness . And the same judgment must be made of Beauty , because of its Frailty , and short continuance . For what season of the Year can be named , that doth not conspire to the defacing of it ? The Winters Cold by driving the Heat inwards , much abates the florid colour of the Face , whilst the Summers Heat tans the Skin , wherein Beauty hath its peculiar residence , and sits exalted as on hes Throne . But suppose we this fading Flower to be perpetual , and exempt from the Power of the distemperature of Seasons or Weather , yet after all , we shall never be able to make it a part of the Highest Good , seeing it brings nothing but trouble along with it , and disturbs the peace of those that are most possest of it with continual sollicitude . How vexatiously sollicitous are Young Men and Maids to appear Beautiful to the Eyes of Spectators ? What pains and inconveniencies do they not undergo , to preserve this fading Flower ? How many hours do they spend in Curling and Combing their Hair , and other Trimmings , and neglect the improvement and good state of their Minds , to adorn and deck their Bodies ? Nothing can be esteemed Good , but what is conducive to Vertue ; but who is so blinded with the Charms of Beauty , to assert that it is any way helpful or conducive to Vertue and Honesty ? When on the contrary it is apparent that it is the greatest allurement to Sin , and furnisheth the strongest incentives to Lust and Concupiscence ? A Woman that sets many Hearts on fire , is in no small danger of being fired her self : And it is but seldom that we find exact Chastity and great Beauty to go hand in hand together ; and there is but too just reason to suspect , that she who is too industrious to please others , is not free from impure desires her self . Wherefore conclude we , that Beauty cannot be ranked amongst the Good things that constitute Human Felicity , as well because it is so brittle and fading , as because it gives occasion to promote Vice and advance Folly. IV. Bodily Pleasure cannot make Ma● happy . But there are none that more abuse the name of the Highest Good , than those who place it in Pleasure , and take its height from sensual delectation . not that I suppose this to have been the opinion of EPICURUS , as most do , since I am perswaded that his Precepts were Vertuous and Good , and that he made use of the word Pleasure , not to advance Voluptuousness , but to promote Vertue , as I have elsewhere shewed at large . Wherefore I do here contend with them only , who owning nothing in Man besides his Body , suppose that his happiness consists in abounding with Pleasure , and that he is then Blessed when every part of him hath its share of joy and delectation . V. They that constitute the Felicity of Man in Bodily Pleasure , do level him with the Beasts . But these may be easily convinc'd of their error , by putting them in Mind , that by setting this Estimate upon Mans Happiness , they level him with the Beasts , and assign to him no greater Good than Swine themselves do enjoy . Nothing can enter the Constitution of the Supream Good , but what is Eternal , and which affects the Soul in such a manner , as to be hurtful or prejudicial to no Body , and never causing wearisomness or loathing . Whereas Pleasure is inconstant , and soon languisheth , and is extinguisht when it delights most . Whatsoever is the true Good of Man , doth not thwart any other Good , but is advantageous to Vertue , and to his Body and Soul ; whereas there is no greater Enemy to Prudence than Pleasure ; nothing that more overcasts the Mind , and fills it with disquiet and ignorance ; being always Rash and Precipitant , impatient of Advice or Counsel , and not so much the effect of Choice , as of a suddain attack and onset . What agreement can there be betwixt Human Felicity and such a Good as this ? The thing must be Immortal and Eternal , that can make an Immortal Soul Happy . VI. Pleasure is common to Good and Bad Men. Besides , how can the Highest Good of Man consist in that which is common to Good and Bad , to the Criminal as well as the Innocent ; that which enticeth Men from Vertue , and clouds their Judgment ; the affluence whereof clogs and breeds a loathing , and commonly ends in Sadness and Repentance ? Now that all these things may be truly affirmed of Pleasure , is evident to every one that considers the Nature of it . CHAP. V. External Good Things are not the Good of Man. I. The Good things of Fortune are not in our Power , and therefore do not belong to us . FOrasmuch as Suitableness constitutes the Nature of Good , and that we always desire that which is most agreeable to our Nature , we do abuse our innate Faculties , when-ever we desire things that are not suitable to us , or which are not in our own Power : which they evidently seem to be guilty of , who rank outward Goods amongst those Good things that are conducive to the Happiness of Man. For such as these pursue Happiness in matters that are foreign to them , and the Acquisition whereof is not in their own Power . Whereas what can be imagined more foolish than to prosecute a Precarious Felicity , and to borrow the means and helps of a Happy State from foreign things ? Who ever acquired Riches , Renown or Nobility when he pleased ? they being Largesses of Fortune , which she gives , and takes away by chance , and at random . II. Riches are frequently a Mans greatest Enemy , and most prejudicial to his Peace and Quiet . You 'l say that Riches are necessary to a Happy Life , forasmuch as they furnish us with many comforts and conveniencies . But for all this , I shall never admit any thing to enter the constitution of the Highest Good , except it be first demonstrated to me to be Good in it self , or that it be in the possession of such a one , who can vertuously make use of it . But where is he that understands the true value and worth of things , and estimates them accordingly ? Where is the Rich Man that is not puft up with his Riches , that doth not despise his Inferiors , and doth not scorn their company ? Riches indeed may conduce to Pomp and Splendor , but not to that state which we require in a Wise Man , viz. a constant calm and sedateness of Mind . For with what racking sollicitude are they tormented in the acquiring of them ? What care , what pains do they take to preserve them when got ? So that they may truly be said not to possess their Riches , but to be possessed by them . Besides , the possession and enjoyment of Good must needs fill and satisfie the Soul : But where is the Rich Man that is content with his Condition , seeing that they are never satiated with Gold ; and that all their acquisitions serve but to enlarge their Desires , and render them insatiable ? Lastly , we find nothing more frequent and obvious than that Riches do debauch men , and corrupt their manners , and tempt the best Natures , sometimes , to the worst of Vices . It was Riches , far more powerful than Swords or Darts , that broke and vanquisht the Roman Vertues , and made Slaves of them , who had mastered the whole World. The Romans were every where Conquerors whilst they were poor , neither could any thing stand before them ; but were conquered and trod upon as soon as they began to wallow in Riches . III. Riches cannot make Men happy . Moreover , that which is the Highest Good must needs accomplish and Bless Man in the highest degree , it must needs be constant and permanent , be desirable for it self , belong to Good Men alone , and exclude all Evil ; but nothing of all these can be found in Riches . For Riches are not desired for themselves , but for the ornament and convenience of Life ; they are more frequently possest by Bad , than Good Men , as daily experience sheweth ; they are the Cherishers and Fomenters of Vice ; they do not bar or keep off Evil , they do not fill the desire , and they often make a man infamous and corrupt him , instead of making him better . IV. Honour is a Fickle Good , and depending of another . Neither can Honour , with any greater Right , lay claim to the title of Good , as wanting stability and permanence , and any other subsistence but what they have in the opinion of men . For they do not long follow the same person , but shift continually , and imitate the inconstancy of the People , whose breath they depend upon . Do not Histories furnish us with Examples of those who from weilding a Scepter , have been reduc'd to hold the Plough ; and who from a state wherein they were raised , not only above the Heads of others , but above the Laws themselves , were forced within Bounds , and had their extravagant Power retrencht ? Did we never hear of SEJANUS , that most famous Roman Consul , who was the Emperors Deputy and Lieutenant General , and whom TIBERIUS called his Friend , how upon a Letter from that Emperor to the Senate he was cast into Prison , and ignominiously treated , being abhorred and flouted at by those , who worshipt him but a while before ? And shall we not conclude from these , and a thousand other instances that Fame and Honour are brittle like Glass , and inconstant as the Wind , which whilst it flatters , doth insnare us , and when it shines strongest , is nearest its setting . Lastly , why should Honour be desired , since it doth not depend on him who is praised , but is wholly in the Power of those who give it ? Neither are Men Honour'd because they are worthy , but because others think them so . V. Nobility being an external advantage only , cannot make Men happy . Others again cry up Nobility , and think it very much injur'd by those who reckon it amongst indifferent things , which do not concur either to Happiness or Misery . For they suppose it to be an innate Worthiness , founded upon the Vertue and Atchievments of their Forefathers . But how can this make them better , since the Nobility they value so much is none of their own , but wholly derived and borrowed from others ? Every one must have his own Vertues , since it is impossible for any Man to borrow them from another . What , am I to be accounted Noble , because my Parents or Ancestors were Famous and Renowned for their Vertue , and because they deserved well of their Prince and Country ? We Pride our selves with that which is anothers , whilst we boast of our Pedigree , and arrogate the Praises of our Ancestors , as if due to us ? For what else is this but to Rob the Dead , and to expect Glory , for what we never labour'd for ? But besides this , how often doth Nobility take its rise from Crimes and Wickedness , and how frequently hath an honourable Title been the reward of Murther or Treachery ? What more common than to purchase Nobility with Mony or Pimping , and for a man to become illustrious for his Vices ? The Posterity of such as these cannot be said to be Noble but Notorious , and the Rise of the Fathers Gentility , becomes the reproach of his Children . But we 'll suppose your Ancestors to have been all of them great and Gallant Men , and to have been beholden to their Vertue only , for their Nobility ; yet can they not transmit this worthiness of theirs to you , nor indeed any thing besides their Riches , which without any regard to the Vertue of our Forefathers , we do often abuse to the Ruin both of Soul and Body . How often do we meet with Gentlemen by name , who , as to their Manners and Accomplishments , are very mean and inconsiderable ? He is Noble , who hath a great Soul , disposed to Vertue and Goodness , who knows things that are Right and Honest , and doth heartily love and pursue them . CHAP. VI. What is the Highest Good of Man in this Life , and his Vltimate End. I. How the Highest Good Happines● and Beatitude may be distinguish● THO' from what hath been already said , it doth in great measure appear , what that is which we call the Supream Good , yet will it be of use in the beginning of this Chapter , to enquire what Felicity , and what Bliss is , and how they disser from the Chiefest Good. We commonly call them happy , who abound with the Goods of Fortune , and who without their own Wit and Industry jump into Riches and Honours . And therefore such are commonly said to be more Fortunate than Wise ; forasmuch as the things they possess are only external , and do not properly belong to them . But Beatitude consists in that Joy of Mind , and Tranquillity of Soul which ariseth from the Possession of the Chiefest Good ; and the Highest Good is that Object , the enjoyment whereof makes us Blissful , and than which nothing higher or better can be desired by us . So that the Highest Good of this Life is that which makes a Man Blessed and Perfect here on Earth , according to the Possibility of this State. And therefore all other things are only to be desired for the sake of it , and it only desirable for its own sake . II. The Chiefest Good of Man in General . It will be useful also for our better understanding of the Nature of the Chiefest Good , to consider Man in a double state , and that is either as a Private Man , and as he is a person that takes care of himself , and refers all things to his own Good and Interest : or as Man-kind , or the Nature of Man in general , which comprehends all Men , and does , as it were , constitute a Body Politick . The Chiefest Good of a Man considered in this latter sense , seems to be no other than a Concurrence of all Perfections whereof he is capable . For so Man cannot be lookt upon as most perfect , without he be furnisht , not only with the Goods of Soul and Body , but also with those of Fortune . III. The Chiefest Good of a Private Man. But forasmuch as we do not enquire here what it is that makes Mankind , or all Men collectively taken , Happy , but what makes every singular Man so ; we say that the Chiefest Good of a Private Man , is the right use of his Reason , and which chiefly consists herein , that he have a firm and constant purpose of always doing that , which he judgeth to be best . And this is therefore the Chiefest Good , because no Good must be esteemed by us more than it , and all other things undervalued in comparison of it . And then because we enquire here after a Good which is in our Power , and can be obtained by us ; and that the Good things of the Body and Fortune are without us , and come to us , and go from us without any contrivance or endeavour of ours ; nor can we be said to possess those things which are only borrowed by us , and which we may lose the next moment ; therefore it is of absolute necessity that we place our highest Good in our Mind , and that it depend on our Free Will only . IV. It consists in the due use of his two Chief Faculties . All that belongs to our Soul is compriz'd in 2 Faculities , viz. the Power of Understanding , that is , of knowing Truth and Good , and discerning them from Evil and Falshood : and the Power of Willing , or assenting to those things which we know to be True and Good. And in the right or due use of these 2 Chief Faculties , we say that the Supream Good of Man doth consist . Which is then chiefly done , when we diligently inspect whatsoever is propounded to us , and when we exert the utmost of the vigor of our Mind to the discerning of that which is best ; which is the first Function or Office of our Intellective Faculty . And in the next place , that our Choice exactly follow our Perception , so as to undertake nothing which is not clear and manifest to us . For our Knowledge is the Rule of our Actions , and , as it were , the Guide of them , which we are to follow ; and as long as we do so , we may be said to be out of the reach of Error : For tho' we may happen to be deceived , and tho' that which we have accounted Good may be only so in appearance , or may be indeed Evil , yet notwithstanding we are assured that we have performed what was our Duty , and have omitted nothing , whereby we might discover the true Nature of it . V. In order to the attaining of Beatitude , three things are to be done . The First . Which satisfaction of Mind we shall attain to , by giving heed to , and observing these 3 things which are the Foundations of all Ethicks , or Moral Philosophy . First , That we , according to our utmost endeavours , strive to attain the Knowledge of what we ought to embrace , and what to avoid in all the Circumstances and occurrences of our Lives . For seeing that many and various things happen to us , during the whole course of our Life , which according to the different Circumstances of Time , are called by different names , we are constantly to fix our Eye upon the Dictate of Reason , forasmuch as it often happens , that those things which were once Good , are accounted Evil ; and that which was Honourable , is now lookt upon as Ignominious and Despicable . Above all , we must take heed of espousing the opinions of the Vulgar , not minding what Men commonly do , but what ought to be done . VI. The Second . The Second thing is , That we stand firm and constant to what we have once resolved upon and purposed ; that is , that we retain an unmoveable Mind and Will , of doing those things which Reason commands , not suffering our Passions and corrupt Inclinations to lead us aside . VII . The Third . The Third , That we lay this down as an unmoveable Ground and Principle , that nothing besides our own Thoughts , is in our Power ; and that therefore seeing the Goods we want , are without us , they are not to be wished for or desired by us . VIII . Whatsoever doth not proceed from our Free Will or Choice , deserves no Praise . The Greatest Good therefore that we can attain to in this Life , consists in the possession of all those Perfections , the obtaining whereof depends on our own Free. Will or Choice ; and seeing that there is nothing , besides the Exercise of Vertue , that is of this Nature , we are to conclude , that our proper Good and Happiness doth therein alone consist . For indeed , whatsoever doth not proceed from this Principle , neither merits Praise nor Blame ; for Praise is the Reward of Good Actions , and can never be deserved , if they be the effect of Necessity , and are not the Fruits of our Free Choice . 'T is without Reason therefore that we delight our selves in Riches , Honours and such like , seeing that they are things without us , and therefore do not belong to our Happiness . We may be allow'd indeed to have some Value for them , but no Praise is due to us for them , any further than they have been acquir'd justly and honestly , that is , in the due use of our Reason . IX . Wherein the Bliss or Beatitude of a Natural man doth consist . Whence we may easily gather , That the Natural Happiness of Man , is nothing else , but that Tranquillity or Joy of Mind , which springs from his Possession or Enjoyment of the Highest Good : Which being nothing else but the Right use of our Free-will , we must conclude , that from the Possession thereof our Chiefest Pleasure must proceed . This will be evident as the Sun at Noon-day , if we consider , that all Pleasure and Delight is the Inmate of our Soul ; and tho' there be some Delights which cannot be communicated to it , but by means of the Body , yet we may assert , that they are intimately present to the Mind : For it is the Soul which perceives all Outward Objects , tho' they be convey'd to her by the Ministry of the Senses ; and it is the Soul alone that is affected with , and capable of Pleasure , whilst she perceives her self possessed of the Highest Good , whereof she is capable in this Mortal Life . X. It is impossible , but he must be sensible of the Highest Joy , who lives in the due use of of his Free-will . Moreover , we are to take notice , that Good things are not so much to be rated by us , from the Conveniences or Advantages which accrue to us from them ; as from the Relation and respect they have to us . Now seeing that Free-Will is properly and peculiarly ours , and that it is the Best thing we are Owners of , it follows , that nothing less than the Highest Joy , can be the result of the Right use thereof . For what can be more excellent in Man , than that whereby he is raised above all other Animals ; than that whereby he resembles the Great and Glorious God , seems to stand , as it were , on even ground with him , and to be exempt from his Command ? Forasmuch therefore as it is manifest that our Free-will is the greatest of all good things , and that the possession thereof is ascertain'd to us , there can be no question , but that the greatest Peace of Mind , and the most solid of all Pleasures , must naturally spring from the due use of it . XI . The Ancient Philophers were of the same Opinion . And by giving this Notion of the Highest Good of Man , we concur with the Opinions of the Ancients , and embrace the Sentiments of EPICURUS , as well as of ZENO , and the rest of the Stoicks . For tho' EPICURUS placed the Chiefest Good in Pleasure , and ZENO in Vertue ; yet they may easily be reconciled by saying , that Vertue is to be accounted the one only Good of Man , forasmuch as it alone depends on his Free-will : And seeing that full Satisfaction of Mind proceeds from the possession of the greatest Good , that therefore Pleasure also must be a concurrent Means to make us Happy . XII . What that best thing is , we all aspire after . The Highest Good of Man therefore consists chiefly in 2 things , viz. in the Knowledge of the Best Good , and in the constant prosecution of it . If any one enquire what that Best Good is in the knowledge and pursuance whereof we must spend all our Endeavours . I Answer in a word , that the Good of the Universe is , that a Man in particular be happy , and all others with him . For seeing that the Greatest of any Good , is to be measured by the Relation it hath to us , we are to take heed that whatsoever we undertake , may promote our Happiness , and conduce to our chief and ultimate End. XIII . We must also do good to others . And forasmuch as we are not born only for our Selves , but for our Country , and the Society and Family whereof we are Members , we are also to endeavour the well-being of others , and be no less solicitous for the Good of the Publick , than for our own . For GOD hath so order'd the World , and hath joyned Men in so close and strait a Band of Society and Communion , that tho' a Man should be so Selfish , as only to mind himself ; yet Prudence would move him to do Good , and be kind to others . Besides , it is the Mark of a great and sublime Soul , to do good to others ; and the Noblest Minds are always found most carried out to Beneficence , and to have a low Esteem of the Goods they possess : Whereas it is the Character of Low and Little Souls , to have a great Value for themselves , and little or no Regard or Esteem for others . XIV . The Interest and concerns of the Publick , are to be preferr'd before any Private Concerns whatsoever . Wherefore Private men , and such as mind their own Interest , are oblig'd , as well as those who are in a more Publick station , to be helpful and assistant to others ; and if they act prudently , will endeavour , to the utmost of their Abilities , to be beneficent to others , doing them all the Good they can . For this is the end and design of Human Policy , or State Government , to settle such Laws whereby we may be helpful and useful to one another , or at least , not be hurtful or prejudicial to our Neighbours . For whosoever shall thus sincerely and heartily obey the Common Laws of the Society , shall without doubt live more happily and safely , than those who pursue their own profit , without any regard to the Publick Good ; who tho' sometimes they may seem to prosper , yet for the most part have an unhappy End , and frequently come to their Fall and Ruin , by those selfish and unjust Means , whereby they design'd to raise themselves . CHAP. VII . Of the Nature of Vertue in General . The Definition of Vertue in General . FOrasmuch as Vertue alone can make us happy , we can do no less than treat of it in particular , to the end we may be fully informed of the Nature of that thing , the possession whereof procures our Felicity . For tho' all Men own Vertue , yet do they not agree in their Thoughts about the Nature of it . But not to trouble my self about enumerating the Opinions of others , I say , that Vertue consists in a steady Resolution and Vigour of Mind , whereby we are carried to do things we believe to be Good. For Man only is Praise-worthy for those things that are in his Power , and which depend on his firm Resolution of Well-doing . And it is of absolute necessity , that he who would Live well and happily , be constant and unmoveable in his Resolutions ; for he that is wavering , and tost this way and that way by manifold Passions and Inclinations , doth not act , but is a Slave to his Passions ; neither follows that which is best , but what is most pleasing to his Lusts and Affections . II. A firm Purpose is necessary t● Vertue . The most necessary therefore of the Requisits to Vertue , is a steady purpose and vigour of Mind , by which we are readily and fully carried to the prosecution of that , which after due Examination , we find to be Best , without suffering our selves to be stopt or turn'd aside by any Passions or Appetites whatsoever . For as Vice proceeds from Doubt and Wavering , which are the Consequents of Ignorance ; so on the contrary Vertue is founded upon a firm and steady Purpose of performing whatsoever Right Reason doth suggest . Which Right Reason is nothing else , but a true Sense and Judgment concerning Human and Divine things , as far as they belong to , or concern us . Wherefore also this is that which is the proper and peculiar Good of Man , whereby , to speak with the Stoicks , he excels Beasts , and follows GOD. III. The Laws of Vertue are truly Good , and ●●reproveable . Nor will this sound strange to us , seeing Reason is no other , but that Power of Understanding and Judging , derived from and communicated by GOD , the Highest and First Reason , which therefore we are to follow as a Rule in all our Actions , and to which we are to have a constant Eye , as to our Sovereign Lady , whose Power over us is most Lawful and Equitable , whose Laws are Irreprehensible , and all her Statutes , Beneficial and Perfective of our Natures . So that he that Obeys and follows her , cannot go astray , since by keeping her Dictates he obeys the Divine Law , written in his Mind , which is the Source and Rule of all Equity . IV. A firm Purpose of always doing what is Best , is a necessary Ingredient of Virtue . We have already said in the Explication of Vertue , that it is a firm purpose of doing those things , which Reason tells us are Best ; because it is requisite that this Will be firm , and that the things we undertake , be throughly Examined by us . For those who perform the greatest Actions , do not merit any Praise , if they be not done after mature Deliberation , and with a steady Purpose . For Vertue , as SENECA tells us , is not an Action , but the Exercise and Purpose of it . For he who is prepar'd , dispos'd and resolved for the Patient enduring of the hardest Trials , and who is fully purpos'd to relieve and succour the Miseries of others , but is hindred of an Opportunity of exerting his Vertuous Resolutions , is without doubt possest of Vertue , tho' he hath not been able to exert or exercise it . So that seeing it is in our Power to Judge what we ought to do , and what to omit ; yet can we not of right be said to be Vertuous , except we have a steady Purpose of doing whatsoever Reason shall propound to us to be Best . V. Aristotle makes Vertue to consist in the midst of Affections . ARISTOTLE , Lib. 2. Ethic. cap. 8. thus defines Vertue ; Vertue is an Elective Habit , consisting in Mediocrity with respect to us , determin'd by Reason , and agreeable to the Judgment of a Prudent man. For according to him , Vertue consists in the midst of two Affections , and derives its Excellence from the Mediocrity it observes between them : For perceiving that Liberality , for Example , was attended by Covetousness and Prodigality ; and that Fortitude was equally removed from Cowardliness and Fool-hardiness , he concluded Mediocrity to be the Formal Cause of Vertue , and to be conversant about the Passions , in which Excess and Defect is found . So that Vertue , according to him , is a kind of Mean betwixt 2 vicious Excesses . VI. This Definition doth not hold good , as to many Vertues . But tho' this may be allow'd , as to some Vertues , yet it cannot be asserted of all , forasmuch as many of them admit of no Mean at all . For what Extreams can we allot to the Affections of Mercy and Benevolence ; seeing that they , in what state soever they be consider'd , are always Good , and always Vertues , whether they be in an Intense or Remiss degree . Again , what Mediocrity can there be conceiv'd in Hatred , Envy , Pride , when these Affections , how temperate soever they may be , are ever vicious , and therefore can never produce any Vertue . For this Mediocrity of Vertue is only to be met with in those Affections which we call Indifferent , which are neither Good nor Evil of themselves , as Anger , Love , Desire , Fear , and the like . For if Anger be moderate , it takes the Name of Vertue , but becomes a Vice , whenever it turns to Rage and Fury , which is the Excess of it ; or sinks down into Unconcernedness , which is the defect thereof . VII . Charity , or Divine Love and Repentance , admit of no Excess . Moreover , the Love we bear to GOD , and the Grief we have for Sin , are both of them Vertues ; and yet neither of them consist in a Mediocrity , since they have no bounds or limits , the one of them having GOD for its Object , who is Infinite ; and the other respecting his opposite , Nothing . Now , who can love GOD to Excess ? or be overmuch grieved for his Sins , or too much incensed against himself , for having offended his Creatour ? No Body questions , but that Adam , in Paradise , was endued with many Vertues , as Justice , Piety , and the like : But what was the Form of these Vertues ? It could not be Mediocrity , because he was not subject to any Excess of his Passions . And how could there be a Mean , without Extreams ? Conclude we therefore , that the Mediocrity of Affections , is not the Form of Vertue ; and that the same may be , tho' there were no vicious Excesses at all . Besides , all own , even those that are the Followers of ARISTOTLE , that Justice is not the Mean betwixt two Extremities , nothing being oppos'd to it , save Injustice only ; and that , because it doth not give to every one his due . VIII . Mediocrity cannot be the Form of Vertue . But yet I do not deny , but that many Vertues are thus placed betwixt two Vices ; for it is evident that Magnificence is a disposition of Mind between Niggardliness and Sumptuousness : Modesty , betwixt Ambition and a stupid Carelesness , and disregard of Honour : Temperance , between an Insensibility of all Pleasure and Intemperance . All that I contend for is , that this Mediocrity is not Essential to the Constitution of Vertue , and therefore cannot be said to be the Form of it : For so Mediocrity , for Example , in Meat or Drink , doth not deserve the Name of Vertue , as it is a Mean between the Excess and Defect of Meat and Drink ; but for that it is according to Reason , and in compliance with the Dictates thereof . For the Soul that is under the Governance of Reason , chuseth the Mean between 2 Extreams , because it finds , that most suitable to it self Neither need we to have recourse to this Mediocrity , since that which is must suitable and convenient for us , as we are Rational Creatures , must of necessity be a Vertue , tho' there be no Extreams between which it mediates . For he that exceeds all other Mort●ls in his Love to GOD , is so far from being blame-worthy upon that account , that on the contrary he is highly therefore to be praised , because this excess is conformable to the Precepts of the Natural Law or Reason , which requires of Man the Highest Piety , and commands them to Love their Maker , with their whole Mind , and all their Strength . IX . All the Vertues are in conjunction . It is a common Saying in the Schools , That all the Vertues are undivided , and link'd together , so that he that hath one , hath all the rest also ; which in some Sense may be admitted , that is ▪ when we speak of Heroical or perfect Vertue ; because such Vertue is supposed to have all the Excellence it is capable of . Sure it is , that all the Vertues are helpful and assistant one to mother ; for it is impossible for any one to be Prudent , without being partaker of Fortitude , T●●peranc●e and Justice ; neither can any Man , as SENECA saith , suffer bravely and boldly , without making use of all the Vertues , tho' Patience be the Vertue , that is most apparent in this case . For it is most certain , that Fortitude must be there also , Patience and Endurance being only Branches thereof : Neither is Prudence wanting , without which there can be no Council or Advice , who adviseth us to bear that courageously , which we cannot avoid . Constancy also makes one of this happy Company . And in a word , the whole Chorus of Vertues do meet in that one Action of suffering courageously ; for indeed whatsoever is Honestly done , tho' it may be chieflly performed by one Vertue , yet is it not without the assistance of the rest . X. All the Vertues meet together in Prudence . And to evince this beyond Contradiction , let us consider , that there can be no Vertue without Prudence , and that all Vertues meet and are joyned in her . For every Moral Vertue only executes or performs what Prudence prescribes , and what agrees with the Rule ▪ and Line of Right Reason ; and therefore it cannot be other wise but that those Vertues , which partake o● this General Nature , must be linked together , according to that Axiom , That those things which agree in a third , must needs agree with one another . Wherefore no Vertue can be without Prudence , neither can there be any constant or ready Prudence , without the Company of all the other Vertues . For as ARISTOTLE informs us , Lib. 6. Ethic. cap. 8. The Judgment of our Reason about practical Principles , is subject to be perverced and deceived by the pravity of our Natures ; so that it is evident that no Man can be Prudent , except he be a good Man also . And consequently the Vertues that make Man good , cannot be separated from Prudence . CHAP. VIII . Of the Law of Nature and Right Reason , with the Practical Dictates thereof . I. Men tho' never so wicked , ow● the Law of Nature . SUch a deep sense of the Law of Nature is imprest upon the Mind of Man , that even the most Wicked and Perverse do profess ●o own and follow it : For Men in all their Actions appeal to the Law of Nature , and contend that they act according to it . A Covetous Wretch that with an insatiable desire scrapes and rakes together Riches , pretends that he acts herein according to the impulse of Nature , and follows her Teaching . An Ambitious Person , that by any means , tho' never so wicked and flagitious , makes his way to Honour and Dignities , meanly fawning upon some , that he may crush others , supposeth himself all this while acting conformable to Nature . He that is a Slave to his Lust , and abandons himself to Luxury and Idleness , brings in Nature to justifie his Lewdness , and contends that his Debauchery is consonant to her Laws : In a word , there is nothing so unworthy and contrary to Reason but hath its Abetters , that will prove it to be conformable to the Light of Na●●re . II. Every Nation hates Vice and Wickedness and punisheth it . But these Wretches are much mistaken , who take their Lusts for the Law of Nature , and suppose the greatest violation of her , to comport with her own Dictates . For what Nation was ever so far corrupted , as not to condemn Murthers , Incest , Theft , Rapin and the like ? For Nature , tho' it be greatly deprav'd and weakned in some Countries , yet for all that cannot patronize Sin ; and as long as the least spark of Reason still glimmers in them , they condemn what other Nations forbid and punish . The Laws of Nature preserve and defend Nature , but are not destructive of it . Wherefore it will be worth our pains to enquire here , whether there be any certain and unalterable Laws of well-living , and doing , to which all Men are obliged , the violation whereof is accounted criminal amongst all Men : In order to the clearing whereof , we shall first consider what the Laws of Nature are , and how they may be defined . III. What the Laws of Nature are . The Laws of Nature are nothing else but a certain Light or Notices which serve to guid and direct us in all particular occurrences , and which are derived from that general Reason , which GGD hath imprinted in the Souls of all men in their formation . We say in the first place , that the Laws of Nature are certain Notices which serve to guid us , &c. to distinguish the Laws of Nature , from the Rules of Motion , which we sometimes also call Laws of Nature . We say in the second place , that they are derived from that general Reason , &c. to shew that the Laws of Nature , are nothing else but the consequences and effects of the Light of Nature ; adding , which GOD hath imprinted on the Souls of all men ; to signifie that the Laws of Nature are general and common , and that there is no Man in the World , how wicked and profligate soever he be , but hath some Sense and Knowledge of them , and that from GOD himself . Book . 1. Part. 10. Chap. 8 Aequa Lance. ●●ns Inv. I. Kip To the Worshipfull Sr. Godfrey Kneller of Lubeck in Saxony , and of St. Pauls Covint Garden in Middlesex Knight ▪ Principall Painter to their Majesties King William and Queen Mary . This Plate is humbly Dedicated by Richard Blome . V. That there are certain and unmoveable Laws of Nature , proved from the Nature of things in general . And that there are such Eternals Laws may be demonstrated from the common Nature of things . For the World which imitates the Unity of its Author and principle , is governed by one Law common to all Creatures , which as it provides for the good of the whole Universe , so of every particular Being . For whatsoever is contained in the World , is subject to the Reason of the Divine Mind , who is the Regent of the Universe . For the Beings that are destitute of Reason follow their natural instinct , and like Arrrws shot by an expert Archer , fly directly to the Mark ; and the Rational , who are guided by the dictates of their Judgment , tend to their appointed End. So that the former are necessarily , and the latter freely and of choice , subject to this common Law. Hence it is that CICERO L. 10 de legibus , saith , In the constituting of what is Right , we must take our Beginning from that supream Law , which took its rise before all Ages , when yet there was not any Written Law , or Civil society constituted . And notwithstanding that almost in every different Climate we meet with different Customs and Manners ; yet amongst them all , we shall find the Foot-steps of this Universal Law , which binds not only the Inhabitants of one particular Country , but also those of the whole World. VI. From the Frame and constitution of Man. The same may be also made out from the end and Constitution of Man , whose peculiar priviledge it is to have the use of Reason , and square his Life by it . For the Dictates of Reason are so evidently imprest upon his Mind , that he readily follows what is Just and Right without any Matter , without any Written Law , without any compulsion of the Magistrate , and discerns betwixt that which is equal and unequal , by the Light of his Conscience only . It is vain and useles to instruct Men , that Murther and Adultery are Crimes , and that Theft must be avoided , seeing that the Light of Nature anticipated this their information , and that all these Laws were long before Written , on the Tables of their Hearts . And therefore the Sovereign Legislator in delivering those Laws cuts them short , Thou shall not kill . Thou shall not commit Adultery , without adding any reason of them , as taking for granted that he addrest them to those who knew that already . For a Ray of the Primordial Reason , appears in Man by a twofold preeminence ; for being endued with Reason , the light which illuminates other Creatures outwardly and superficially only , is his property and part of his Essence . And in the second place , the Sense of Right and Truth and Affection for it , is most intimately present in his Heart , whereby he is directed both in his Speculation and Practice . The Minds of Men are stored with the Seeds of Vertue and Honesty , which are excited by the least admonition , like a spark of Fire , which being only assisted with a small Blast , displays it self into a great Flame . VII . How GOD hath imprest these Laws on the Mind of Man. For GOD being concernd for the Preservation of Man whom he hath made , hath of his infinite Goodness and Wisdom engraven in their Minds , when he united it to the Body , a general knowledge of what is Good , that is , an Idea of whatsoever is conducive to the preservation of that Union . And it is this Idea or Knowledge , which we call a Good understanding , Right Reason , the Light of Nature ; and the particular Notices derived from this general Idea , are those we call the Laws of Nature . VIII . Men that deviate from these Laws are to be herded amongst Beasts . And tho' some may think themseves very obsequious to the Law of Nature whilst they indulge their Flesh , and wholly abandon themselves to their Lusts , whilst they cram themselves like Swine , and are as Luxurious as Goats : Yet most certain it is that such Men as these do not follow their Human , but Animal Inclinations , and in a word , live like Beasts : For would they but attentively search into their own Bosoms , and consult the Law of Universal Nature written in their Hearts , it would appear a most monstrous and unjust thing to them , thus to disguise themselves with the Manners and Passions of Brutes , seeing that they are reasonable Creatures , and as such are obliged to direct their Lives , not by the compass of Sense , but Reason . They only Live according to Nature , who square their Actions by Reason , and who confine themseves to these three Precepts , to Live Honestly , not to Hurt another , to give every one his due . Which Precepts by the unanimous Suffrage , both of the wise and common People , are called the Fountains of all other , and a compendious , but Essential Institution of the Law of Nature . IX . The certainty of the Laws of Nature confirmed from the Relation Man hath to other Rational Agents . These unalterable Laws of a good Life , may be further demonstrated from the Relation Man hath to other Rational Agents ; for seeing that Man is a Sociable Creature , and affects the company of such as are like him , it is necessary there should be some Laws , whereby they might be engaged to lend their mutual assistance one to another , and directed to Love their Neighbours . Accordingly Men following the impulse of Nature , and entring into Civil Societies , establisht this first Standard of Justice , To live Honestly , to hurt no Body , and to give to every one his Right . It is the Right of Nature , saith the Law l. 206. F●de Reg. jur . that no Body enrich himself with the damage of another . And therefore we find that there is no Nation so depraved in their Manners , which doth not abhor and abominate ungrateful Persons , Mutherers of Parents , Breakers of Covenants , Deceivers , &c. and think them worthy of the worst of Punishments , looking upon them as profest Enemies of Society , and violaters of the Law of Nature . How dismal would the condition of Mankind be , if it were lawful for every one to do what he listed , and to make his own Lust and Humour the Rule of Good and Evil ? What House , what Palace would be secured from devouring Flames , if any one at pleasure might put Fire to them , and warm himself at the cost of another ? What Wife would be safe within her Husbands Arms , if there were no Laws to secure publick Honesty , and to guard the Enclosure of the Conjugal Bed ? Nature hath deeply engraven this precept in the Hearts of all , Do not that to another , which thou would'st not have another do to thee ; this is that Dictate , which is present to all Mens Minds , and directs them , if so be they do not stop their Ears to its Voice , and listen to their Passions rather than their Reason . X. Man is furnisht with the Idea's of Good and Evil , which are such of their own Nature . From what hath been said , may be gathered , that there are some certain and immutable Idea's of Good and Evil , whereby , under the sole guidance of Nature , we distinguish things that are just , from those that are unjust , and things honest , from filthy and unbecoming : Like as by the different notations of Figures , we distinguish Mathematical Schemes , and separate them from one another . For as we define Figures , not by Sense , but by Reason ; so we perceive what is right or unjust by Reason ; which teacheth us that Good is to be desired , and Evil to be avoided . The ground whereof is this , because Good and Evil from whence our Idea's are taken , do not depend on the Judgment of any private person , or of any multitude of Men how great soever , but are such of their own Nature , and therefore necessarily to be embraced , or avoided by Intellectual Creatures . For as the Understanding of Man doth not enquire what appears to some to be Truth , but what is Truth simply and in it self : So likewise the Will of Man , doth not embrace that for Good , which seems to be so to some private persons , or to most Men , but what is really and immutably so , and which is to be chosen and embraced in spite of , and notwithstanding all the Reluctance of our Animal propension . And therefore as there is something in Nature which is absolutly and simply True ; so likewise must there be something that is good in its own Nature , and for its own worth and loveliness to be desired by the Will of Man. And therefore as he abuseth his faculty of Understanding , who being imposed upon by the deceptions of Sense or Imagination , doth not perceive what is naturally True ; so in like manner he also abuseth his faculty of Willing , who suffers himself to be so blinded by his Animal Appetite , as not to chuse that which is good of its own Nature , and for want of due attention fails of his end and aim . XI . Some Sentences into which Moral Reason may be resolved . Now what Method or Order a Man is to follow in his choice , and what Good he is to embrace in such Circumstances , will appear from the subjoyned Axioms , into which the whole Nature of Vertue may be resolved . 1. That is accounted Good , which is agreeable to Intellectual nature , and is commensurate to its State and Condition , and is some way or other conducive to the Conservation of the perceiver . 2. On the contrary , that is accounted Evil , which is inimicitious or opposit to an Intellectual Nature with respect to its Condition , and causeth grief and aversion to it ; and if it threaten its destruction , then is it esteemed to be the worst of Evils . For one Evil supervening to another , is thereby made the more Heavy . For it is seldom seen saith ALEXANDER ab ALEXANDRO , that a Commonwealth shaken at once with intestine and forein War , can hold out long ; for the superadded danger by dividing their Councils and Subsidies , which otherwise were scarce sufficient to stem its double Tide , makes them still weaker , and so at last over-throw the tottering Commonwealth . 3. All Good is not equal , as the Stoicks held , but some preferable to other , since it is certain that that Good is more excellent , which exceeds another in Nature , Duration , or both . For it cannot be questiond but that GOD , who is Eternal , and who by his Nature includes all other perfections , must needs be a more excellent Good than the Creature , how perfect soever . And that an Angel in Goodness excells Man and Beasts . So that the value of Good may be considered after a twofold manner ; either Intensively , as it affords the greatest satisfaction to the Mind ; or Extensively , according to its more ample diffussion of the same , and its greater tendency to the Good of the Universe . From whence afterwards follows its Duration ; for the more durable any Good is , the more excellent it must be also , and is so to be esteemed . 4. It is the peculiar property of Good to move the Will to the choice and embracing of it ; whereas Evil produces the contray effect ; and even as a greater Good kindles a greater Love of it self ; so a less Evil is to be born , to avoid a greater . Because a less Evil , with regard to a greater has the appearance of Good. Whence came that common Axiom amongst Moralists , that of 2 Evils the least is to be chosen . For seeing that Nature doth always what is best , therefore it also avoids the greater Evil ; for a less Evil comes nearer to Good , and is accounted comparatively Good. Hence it is that Men to avoid being burnt , cast themselves from a Precipice , or leap into a River to avoid the Jaws of a Wild Beast , or the Sword of a Robber , and to keep themselves from perishing there , lay hold of Thorns or Briars or any thing how painful soever , to save their Lives . 5. If any thing happen to us , whose nature we are ignorant of , we may safely trust those , who profess themselves skilful in that matter ; in case we are fully persuaded of their skill and faithfulness , and that it be evident to us , that there is no deceit in the matter , or desire of particular gain or advantage . 6. Tho' the event of things be doubtful , yet when ever we apprehend that any Good thing will happen , we ought to take as much pains to obtain it , as if it were present ; since if we do so , it shall certainly come to be our lot at last . 7. In the judging and discerning of things , we are to take care that the Mind may be free from all the Prejudices of Infancy , and Enticements of our Passions ; for the Understanding being clouded with the dark smoak of the Passions , cannot discern the Good , and the Will following its guidance , mistakes in her choice . Book . 1. Part. 10. Chap. 9. G Freman . Inv. I. Kip. S To the Worshipfull Francis Lane of Glendon in the County of Northampton Esqr. And to Elizabeth his wife , eldest Daughter , and Coeheyre of Andrew Lant of Thorp-vnderwood in the said County Esqr. deceased This Plate is humbly dedicated by Richard Blome . CHAP. IX . Of Prudence ; and the Parts of it . I. The Division of Vertue . VERTUE is commonly divided into 4 Species , Prudence , Temperance , Fortitude and Justice , which Ethical Writers call Cardinal , because they consider them as the Hinges upon which all other Vertues turn , and from whence they proceed as so many Branches . II. The Nature of Prudence , and what it is conversant about . The first Rank amongst these is given to Prudence , which makes use of all the rest , and as the Eye of the Soul doth point out to them their Order and Manner ; and accordingly may be defined a firm and constant Will , heedfully to look out , and diligently to examine what is best . For it is the Office of a Prudent man , not to undertake any thing , which he hath not first weighed in the Balance of Reason , and found , that according to the present Circumstances of Place and Time , wherein he undertakes a thing , there is no truer , or at least more probable Reason , than that which he is resolved to follow . For Prudence is not a certain Science , which contemplates things necessary , and which can be no otherwise than they are ; but a kind of knowledge that is conversant about Contingent matters , which are not only mutable , as to their Manner , but as to their Existence . For tho' the Object of Prudence generally consider'd be something common , viz. whatsoever ought to be done according to Right Reason ; yet Prudence , as consider'd in every particular Man , is conversant about Singulars , which may , or may not be ; or may be thus , or otherwise . III. The Three Duties or Offices of Prudence . There be 3 Offices or Chief Acts of Prudence ; Good and wary Consultation , Right Understanding or rather Judgment , and Sentence or Command . Consultation , or Deliberation , doth above all the rest belong to Prudence , whilst it considers what Means are most proper and best to obtain her End ; to which is oppos'd Precipitancy , when we do things rashly and inconsiderately . And to the end this Consultation be such as it ought , it must be done with due Consideration , and aim at a good End ; for otherwise it will be only Cunning and Craftiness . Right Understanding , or Judgment , is that whereby we pass a dextrous Judgment of the Means , by a reflex Act , approving of them . And is therefore called by ARISTOTLE , a quick and ready Understanding ; to which is oppos'd dulness of Mind , or Folly : So that a Prudent man seems in some sort to keep the middle Station , betwixt a Block-head or Dull-fellow , and a Crafty Knave . The Sentence , or the Habit of passing a Decretory Sentence , concerning the Goodness of the Means , follows next after Judgment , and is that whereby a Prudent man rightly determines , how to make use of the Means which he hath judged to be best , and with Constancy puts the same in practice . IV. Of the Parts of Vertue in General . Three kinds of Parts are assigned to every Vertue , the first whereof are Helps or Advantages , which are necessarily required to the Perfect Law of Vertue ; the other are called Subjective Parts , which as so many Species do resort under it ; and the last are called Potential , which Potentially are contained in the chiefest Vertues , and which do not comprehend their whole Natures , but belong to some secondary Laws . V. Of the Constituting Parts of Prudence . The Constituting parts of Prudence are , 1. To know the Laws of Nature , according to which we ought to live . 2. To compare them together , that we may know what place they must take , or which of them hath the Precedency . 3. To consider , and have regard to the Circumstances of place , time and persons , in all our Actions . 4. To have an Eye to our Chief End , and to pursue the same by all honest and lawful Means . VI. The Integral Parts of Prudence The Helps required to Prudence are reckoned 8 in number , viz. Memory , Understanding , Forecast , Teachableness , Quickness of Wit , Reason , Circumspection , and Cautelousness . Of which some are helpful to Consultation , others to Judgment or Discerning , and lastly , others to Sentencing or Determining . VII . Sharpness of Wit. Sharpness or Quickness of Wit belongs to Consultation , or Deliberation ; by means whereof a Prudent Man finds out the Means , which conduce to the obtaining of his proposed End. This Help is of kin to Sagacity , which speaks a disposition in the Soul , whereby it readily and dexterously discovers what lies hid , and finds out the Ways which are the shortest and surest to the desired End. VIII . Intelligence or Understanding . Understanding , or Intelligence , is a Help to our Judgment or Discerning ; and it is not here taken for a Habit of the first Principles ; but for a knowledge of the things that ought to be done , whereby we perceive and judge rightly of things that offer themselves . IX . Teachableness . Teachableness is a Promptitude of the Mind , for the Learning of the things we are ignorant of : For seeing it is the part of a Prudent man to know many things , and to be able to distinguish the Honest Good , from the Pleasant and Profitable , it is necessary that he be Teachable , so as to improve himself by the Discourses of others , or in the Reading of Books . X. Memory . Memory is that , whereby a Prudent man calls to Mind things that are past , and represents to himself several Actions and Events , from whence , as from the Premisses , he concludes what Judgment he ought to pass of the future . XI . Reason . Reason is the right use of the Knowing Faculty , whereby a Prudent man , from fore known and prae-consider'd things , argues aright , gathering and judging what he ought to do in present Circumstances . XII . Forecast , Circumspection and Cautelousness . In order to Command , or the passing of a Decretory Sentence , a Prudent man is assisted by Forecast , Circumspection , and Cautelousness : Forecast is that Habit whereby he diligently considers Future things , and from things that are past , gathers what will be , and accordingly resolves what to do . Circumspection is that Habit , whereby the Circumstances of Affairs are heedfully and diligently minded . And lastly , Caution , or Heedfulness , is that whereby Obstacles that might happen are removed , and all Impediments that might hinder the obtaining of our intended End. XIII . The Subjective Parts of Prudence The Subjective parts of Prudence , according to the School-men are 4 , viz. Private or Solitary Prudence , Oeconomical , Political , and Military . XIV . Wherein Private Prudence doth consist . Private Prudence , tho' it be frequently confounded with the Monastick , yet is it not peculiarly to be restain'd to those that lead a Monastick Life ; and separating themselves from the Multitude , betake themselves wholly to Contemplation and Devotion ; but is that which belongs to every Singular Man , who , whether he hath none to take care of but himself , or whether he takes care also for others , stands in need of Prudence , to direct and assist him in his several Actions . XV. The First Office of Private Prudence . The Office of Private Prudence is twofold ; the First , That every one do chuse some kind of Profession or Way of Living , wherein he may spend the rest of his days : For no Man can be happy that keeps no certain Course of Life , but being unresolved and wavering , is ever deliberating what Condition of Life he had best embrace , and to what Order of Men he had best joyn himself . Prudence therefore adviseth every man to consult his own Genius and Ability , and to chuse for himself such a State of Life as comports with his Natural Gifts , and the Temper of his Mind , and wherein he may with Pleasure and Satisfaction , continue throughout the Course of his whole Life . XVI . The other Duty of Private Prudence . The other Duty of Private Prudence is , that having once pitch'd upon a set State or Condition of Life , he use all possible Industry that he square all his Actions by the Rules of Vertue , according to the Dictates of Reason ; and take heed to commit nothing that may necessitate him to Repentance . All which he may , without any great difficulty obtain , in case he undertake nothing without mature Deliberation , and be constant and firm in his Purpose , when once he is assur'd of the Goodness and Honesty of them . For the chiefest part of Human Beatitude consists in Acting constantly , and never turning aside from the Right path of Vertue . XVII . What Oeconomical Prudence is Oeconomical Prudence is , that whereby a man orders the Concerns of his Family . Its Dictates are , that no man rashly or inconsiderately cast himself into the indissoluble Band of Matrimony ; but that he consider well of it before he enters a State , which he cannot quit again at his pleasure . That the Woman he takes to be his Wife , be adorned rather with the Embelishments of Mind , than of Body ; and that she be more recommendable by her Chastity and good Manners , than by her Riches or Portion . Also , that there be an Equality between him and her , since it is a common thing for a Wife , who is above her Husband in Nobility or Riches , to despise him , and look upon him rather as her Servant ; than her Husband . Prudence also adviseth , that he seriously weigh and consider the Temper of Women , the defects and weaknesses they are subject to , and that their Will is commonly much stronger than their Reason , and their Phansy and Humour the Law of their Actions : That many Husbands have only 2 good and pleasant Days , as HIPPONACTES saith by STOBAEUS , the one , that of their Marriage , and the other , that of their Wives Burial : That being once married , he must treat her as his Wife , by communicating his Secrets unto her ; especially if he knows she can hold her Tongue , and conceal what ought not to be divulged ; lest she should conceive her self to be slighted or neglected , and by this means becomes careless of her Duty . XVIII . How Children and Servants are to be ordered and Governed . Prudence also prescribes Rules , how Children ought to be Educated , and Servants kept to their Duty ; which it would be too prolix to insert here , and may be seen set down at large in a Treatise which I have written in French , concerning Vertue , conformable to the Sentiments of Epicurus , entituled L'Epicure Spiritual . XIX . The Precepts of Political or State Prudence . Political , or State Prudence , imitates the Oeconomical , and differs from it only in this , that its Subjects are more numerous : For as the former is concern'd with governing ones Wife , Children and Servants ; so Political Prudence consists in Ruling a City , Province , or Nation . In order to the discharging of which Function aright , it is first necessary that he who bears Rule over others , does himself excel in Vertue , that his Actions may serve for Examples to his Subjects . For Subjects think it their Glory to imitate the Manners of their Prince , and to express him in all their Actions , Words and Gestures . Hence it is , that the Crimes and Vices of Princes spread like a Contagion , and infect the whole Body of their Subjects : For they think , that what their Princes do , is not only lawful for them , but even Praise-worthy also ; so dangerous are great Examples , and so effectual for the promoting of Vice and Wickedness . He therefore that Governs others , must carry a Majesty , and command Respect , not by his Big and Severe Looks ; but by the Rectitude of his Manners and Heroical Vertue . XX. Princes must be Religious , and true to their words . As it is highly commendable for Princes to be Religious , and Eminent in their Piety towards GOD ; so must they also excel in punctual Faithfulness and Truth towards their Equals . For a Prince that doth not keep his Word and Promise , makes himself Vile and Despicable , because it is a mark of Fearfulness and Impotence to break his Word , and to elude the Execution of his Treaties . Prudence therefore adviseth , that a Prince be exact in performing of his Word , and just and equal in his Actions . For Rulers are not exempt from , or above all Laws , for Justice is above them ; and if it be in their power to do what they please , yet are they not to will any thing , but what they ought . It must be also a great part of their Care , to have an Eye to the Great Officers and Magistrates under them , to see that they perform their Duties , to the end that the Judges may be Honoured , the Laws Reverenced , and they themselves Loved and Dreaded . Book . 1. Part. 10. Chap. 10. G. Freman . Inv. I. Kip To the Right Worshipfull Sr. Edmund Turnor of Stoke-Rochford in the County of Lincolne Knight . This Plate is humbly Dedicated by Richard Blome . XXI . What Military Prudence is . Military Prudence , which chiefly belongs , and is necessary to the Commanders in Chief of Armies ; teacheth how to undertake a War , carry it on , or bring it to an happy Issue : First , by instructing them not to enter upon it rashly , and without good Advice ; having first well weighed their own strength , and being moved to it by a just Cause . For if they find , that the Power they intend to oppose will prove an over-balance for them , Prudence will advise them to desist from the Thoughts of attacking a too Potent Enemy , and to conclude a Peace with them , rather than hazard the Loss or Ruin of their Kingdom . But if Peace cannot be had but upon unreasonable Conditions , then a War is to be hazarded ; and after having implor'd the Divine Favour by Prayers , and encouraged the Souldiers , they are to give Battle , and to dye rather , than to lose their Right and Liberty . XXII . What things are necessary for the waging of War. In the waging of War , great care is to be taken , first , to List strong and couragious Souldiers , Exercis'd in Arms , and hardned to Labour and Service . Secondly , That they be well Arm'd , not only with Defensive , but also Offensive Arms. Thirdly , That a sufficient Quantity of Provisions be provided , and ready at hand , for the supply of the Army , seeing that for want thereof , not only Castles and Towns are often lost , but whole Armies sometimes miscarry . Fourthly , That there be store of Mony , which is the Sinews of a War , and without which the Souldiers cannot be kept to their Duty , nor restrain'd from Robberies . These 4 things being well fore-cast and provided , Princes or Generals may safely undertake a War , and Invade their Enemies , since this is all that Military Prudence requires , in order to the Successful carrying on of a War. XXIII . Prudence is acquired two several ways . From what hath been now said , it is easie to conclude , that the ways of acquiring this Vertue of Prudence , are reducible to 2 only , viz. to Precepts and Experience . The latter of which is twofold , viz. ones own Experience , and that of another . Proper Experience is the knowledge of things , that we our selves have seen or done ; and the other is the knowledge of things , that have been seen or done by others , and which we have only by Relation . The Prudence we get by Experience and Use , is much more sure and certain , than that which is attain'd by Precepts , or by the knowledge of History ; but as it is more excellent , so likewise it is more difficult to be obtained . CHAP. X. Of Temperance . I. About what things Temperance is conversant . TEMPERANCE is so nearly ally'd to Prudence , that it always accompanies it , and seconds it in all-its Laws ; and was therefore called by the Ancients , the Conservatrix of Prudence , because it preserves the Soundness of the Mind , and is very conducive to Consultation and Judgment . For an Intemperate person seems to have suffer'd Shipwrack of his Reason , and therefore ought to be serv'd as Mad-men are , in order to the Recovery of it . For Temperance imports nothing else , but the Moderation of Reason , and the absolute Command of the Soul over all its Passions : For it suppresseth Concupiscence , stifles vain Hopes , moderates Love , and keeps the Mind from being ruffled by any other Perturbations whatsoever . But being taken in a stricter Sense , it signifies the restraint only of those Pleasures which belong to the Taste and Feeling , which are common to us with the Beasts ; and to which , according as Men either addict themselves , or bid defiance , so they are termed Temperate or Intemperate . II. The Definition of Temperance We may therefore define Temperance , A firm and constant VVill or Resolution , to resist and restrain Bodily Lusts and Pleasures , especially those that belong to the Taste and Touch. By which words it appears , that those Pleasures are excluded which belong to the Senses of Seeing , Hearing , and Smelling ; and that Temperance in this Sense , is only conversant about the pleasures of the grosser Senses of Tasting and Touching . III. Decency and Bashfulness do constitute Temperance The Parts which in some sort may be said to constitute Temperance , are Honesty or Decency , and Bashfulness . For there is a kind of Comliness beaming forth from Temperance , which allures men by its Loveliness , and makes them to restrain and repress flattering Pleasure , and ●o deny whatsoever is most pleasing to the Body . For it is a commendable thing to avoid all Immoderateness , and to follow Temperance only for the Comliness and Loveliness of it . Bashfulness also is a great help towards the exercise of this Vertue ; whereby we fear Infamy , lest by indulging our Lusts , we should expose our selves to shame , and lose our Fame and good Repute by our Intemperance : for Shamefac'dness or Bashfulness , is not here taken for a Passion , but for a kind of Fearfulness of incurring Reproach and Disgrace , by committing any shameful Action ; which Fear of Shame may well be called the Guardian of Vertue , as being always accompanied with a laudable Moderation . IV. Sobriety and Chastity are the two Species of Temperance . There be 2 Species of Temperance , viz. Sobriety and Chastity , the former whereof moderates our Eating and Drinking ; the latter sets Bounds to the Enjoyment of a Conjugal Bed. V. The Precepts of Sobriety . Sobriety teacheth us , that our Bodies are contented with a little , and cannot without Pain and Prejudice bear what is superfluous . And accordingly hath given us a Measure , by which every one may be informed what quantity of Meat and Drink he ought to use . For Nature being a Careful Mother of her Children , condemns all those things that serve to tempt and provoke an Appetite , and which are taken rather for Pleasure , than for Necessity ; and teacheth us by daily Experience , that Diseases and Infirmities of the Body , are the Fruits of Intemperance , and that Pains and Dulness of the Head , Crudity of the Stomach , Griping of the Guts , would be in a great measure unknown to Men , if they did not by Drunkenness and Gluttony pull them down upon themselves . Whereas on the contrary , Sobriety secures the Body , restores decayed Strength , and by reducing the Humours to a due Temperament , easily subjects the Passions to Reason . Do we think that he is wholly depriv'd of Pleasures , whose Diet are the Fruits of the Earth , and contents himself with Viands that are prepared without the need of a Cook ? Such an one as he enjoys a vigorous and healthful Constitution of Body , in which his Soul exerciseth her Functions freely and expeditely : So Abstinence to him is instead of the most delicious Liquor , as preserving his Health , and fortifying it against all Infirmities . Wherefore we must accustom our selves to a Moderation in Diet , if so be we would enjoy a sound Mind , in a Healthful and sound Body . And this will be our portion , if contenting our selves with Common Food , we shall despise Dainties , except only so far as may be necessary for the Recovering of our Health , and to comply with the Advice of our Physician : Since nothing is more sure than , that Meats are spoiled and adulterated by too much care and exquisitness in Dressing ; and that the Art of Cookery , for the most part , leaves them more unwholsom than it found them . VI. By what means Chastity may be procured . First by a Spare and Abstemious Diet. And as for Chastity , which permits no Pleasures , besides those that are enjoyed in Lawful Wedlock , it will be of use to set down some Preservatives , whereby a Man may secure himself against the violent Attacks of Carnal Lust , and render Chastity easie and familiar to himself . The First and Chiefest of these Preservatives is , that he use a slender Diet , and carefully avoid all Meats and Drinks that are enflaming . For it is very hard , or rather impossible , for a man to indulge himself in Gluttony , and not to be tormented with Lustful motions . For Gluttony and Carnal Lust are so closely ally'd , that , as TERTULLIAN hath it , Lust without Gluttony , may well pass for a Prodigy or Monster . Let the Body therefore be fed with that Caution , that the strength of it only may be preserved , without furnishing Copious Matter to increase a Passion . Food is afforded us for the maintenance and support of our Bodily Lives ; and tho' it be necessary to our Nature , yet is it to be taken with care and anxiety , lest it should supplant our Chastity , and excite us to Uncleanness . VII . Secondly by Business and Employment . The Second Preservative is , that he be always busied and employ'd in some honest Calling , without indulging Sloth or Idleness : For continual Business or Study wasts the Animal Spirits , which invigorate us ; or at least by taking up the Mind , divert it from Lustful Thoughts and Imaginations . Idle persons are most haunted with this Spirit of Luxury , and such who by doing nothing , learn to do Wickedly . We must take Care therefore to eschew Idleness , and to entertain our Minds with such Thoughts , as are so far from being Incentives to Lust , that they are destructive of it . VIII . Thirdly by avoiding the Temptation . Thirdly , It will be of good use to avoid and fly from the Temptations , which may come from the Sight of , and too free Discourse with Women , left by handling Pitch we be dawbed with it . For Lust is better conquer'd by Flight , than by Fight . IX . Fourthly an obstinate Resolution of Resisting Temptations . Fourthly , A full Resolution and long contracted Habit and Custom , to repel the Assaults and Onsets of Lust , is very advisable : For as he is easily overtaken with Lust , who hath been often conquer'd by it : So he who makes it his business strenuously to resist its Temptations , becomes thereby the more strong and vigorous to resist them . I confess , it is a Master piece to overcome so smiling and fawning an Enemy , which whilst she ruins , seems to Caress us . But what is all this , if compared to our Strength ? Nothing is impossible to a Soul that is resolved to conquer : They are Cowards that upon the first Onset give way , without ever putting their Strength to the Trial. But you 'l say , It seems impossible , all on a sudden to quit a Habit of long standing : Suppose it so , Disaccustom your self by little and little , contain your self for a few Days at first , and afterwards by degrees protract the said Time , and question not , but that by frequent Fights and Resistings , you will at last become Conquerour . Call to mind , how great and sincere a Joy thou hast been sensible of , whenever thou hast shewed thy self a couragious Combatant , in resisting and putting by these Assaults ; and on the contrary , how thou hast been cast down ; what Shame , what Repentance , what Anguish have pinch'd and rack'd thy Soul , whenever thou hast weakly and cowardly made thy self a Slave to thy Beastly and Inferiour Nature . In a word , thou wilt soon be Chaste , if thou canst once heartily Will to be so . X. The Potential Parts of Temperance . Temperance likewise hath its Potential Parts , viz. Meekness , Clemency , and Modesty . The business of Meekness is , to restrain Anger , and to refrain the Mind from Revenge . For by means of this Vertue a Man becomes truly Human , and lovely in the sight of others . For as he is Hateful and Troublesom to all , who is easily provoked to Anger ; and who , upon the least occasion , becomes enflamed with Wrath ; so on the other hand , we love and delight in the Company of those , who , tho' highly provok'd are easily reconcil'd , and forgive the Injury done to them . XI . The Horrid Effects of Anger . Wherefore we must take care to moderate the impetuous Flame of Anger , and to quench it by Meekness , that we may come to our selves again , and recover the possession of our Minds , whence that violent Passion had turn'd us out . Wherefore , as soon as any one finds himself mov'd to Anger , let him consider how contrary this Passion is to Humanity , and how shamefully it disguiseth his Body , and casts down the Soul from its Throne of Power and Command . Consider the Looks of an Angry man ; his Eyes flame , the Blood comes up into his Face , boyling up from his Heart , he Faulters in his Speech , his Face is distorted and dreadful ; so that it is a great Question , whether this Vice be more detestable in its Nature , or more ugly in its outward Appearance . Let a man consider also , what a Man gains by all his Rage and Wrath ; whereas by refraining his Anger , he delivers himself from this dreadful Commotion and Concussion , which has prov'd fatal to many , whilst they have endeavour'd to wreak their Spleens upon others . How much more glorious is it , to bear Injuries patiently , and to contemn Affronts , rather than to meditate a Revenge ; and whenever we perceive this Enemy creeping upon us , to have that of MARK ANTONINE the Emperour always before the Eyes of our Mind . Behold one thing here that is highly to be valued , to Converse courteously with Truth and Justice , amongst a Company of perverse and lying Men. Book 1. Part. 10. Chap. 11. G. Freman Inv. I. Kip Sculp . To the Worshipfull Simon Harcourt of the Middle Temple London Esq● . This Plate is humbly Dedicated by Richard Blome XIII . Modesty . Modesty is conversant about the moderation of the desire of Dignity and Honour . He deserves the name of a Modest Man , who doth not boast of his Merits , or vaunt of his Endowments ; but owning himself to be a man , thinks lowly of himself , and esteems nothing properly to belong to him , besides that which he hath attained to . And accordingly a Person adorned with this Vertue , is more solicitous about rendring to others the Honour that is due to them , than desirous to receive the same from others ; and is much more carried to the performing of good and great Actions , than concerned to obtain the name and esteem which gallant Atchievements bring along with them . XIV . The Duty of a Modest Man. Whosoever thou art therefore , that art raised to great Honour , entertain no high thoughts of thy self , but being conscious of thy Human Frailty , and mindful of thy Mortal Condition , suspect and reject every thought that would flatter thee into a high conceit of thy self . A man famous for his worth and merit , and whose Soul is embellisht with Vertue , must resemble an heavy Ear of Corn , which sinks its Head by so much the Lower , as it contains a greater number of Grains . For the least Boasting lessens Merit ; and as praise , coming from a mans own mouth , is nauseous , so the proclaiming of ones own vertue , obscures the Glory that is due to it . When CATO was asked why the Senate had refused to erect his Statue in the publick place , he answered , that by their refusal they had taken more care for his Glory , than they would have done in allowing him a Statue , for that he would much rather , that men should enquire why the Senate had not erected his Statue , than demand why they had honoured him with one in the Market Place . For Honour , like a Shadow , follows those that flee from it , and is most found in their company who do not pursue it . Wherefore , a Wise Man that placeth his happiness in the exercise of Vertue , is always unmoveably resolv'd , never to prefer himself before any one , forasmuch as by this neglecting of Honours , he both secures his own Peace , and acquires the most solid and greatest satisfaction . But then this Modesty , or rather Humility , must be sincere and without di●●imulation ; and far from that Ambitious Lowliness of some Philosophers , who by their despising of vanities , sought for vain Honour , and as STOBAEUS saith of them , trampled upon the Pride of others , with a greater Pride in themselves . CHAP. XI . Of Fortitude . I. Fortitude exceeds all other Vertues : The Definition of it . THO' all the Vertues be worthily esteem'd by Moralists , and engage Spectators to love them ; yet there is none amongst them all , which more insinuates it self into their hearts than FORTITUDE , or that shines with a more distinguishing Beauty and Lustre . Justice is had in great Honour , and the Princes and Magistrates that pursue it , do by this means attain to a high degree of Veneration . Prudence is the very Soul of Statesmen , and is industriously studied and sought for by all who have the care of Families , or the Government of a Commonwealth committed to them . Temperance hath many that praise and love her , because of the Pleasures she affords her followers , as well as by reason of her Comeliness , whereby she recommends her self to the Eyes and Hearts of her very Enemies . But yet all these Vertues do in a manner vanish and disappear when Fortitude presents her self , as the Stars at the rising of the Sun ; for her powerful Beauty , at first sight , charms and ravisheth our Hearts , which , as SENECA saith , consists in her not dreading the Fire , in her receiving of wounds , and being so far from avoiding the Darts level'd at her , that she meets them , and exposeth her Breast to them . So that Fortitude may be de●ined , a Constant purpose of Mind to undergo Dangers , and endure Pains and Labour , when-ever we think them to be best . It s chief Laws are two , the one whereby she commands us to Undertake , the other whereby she teacheth us to Endure : For seeing that this Vertue is conversant about Boldness and Fearfulness , which are 2 extreams of it ; it suppresseth Fear by enduring Difficulties ; and moderates Boldness , by a cautious undertaking . II. About what things Fortitude is ▪ conversant . Wherefore to this Vertue in general , is required , first a kind of Firmness or constancy of Mind against all those ills , which we look upon as hard or difficult to undertake or endure . For a man cannot be lookt upon as possest of this Vertue for excelling in Bodily Strength ; forasmuch as those who want that , may nevertheless be adorned with this Vertue , which consists chiefly in a firm purpose of performing those things we judge to be honest , and of wrestling against all Adversities without being discouraged by them , with an even temper and firm resolution . III. Who it is that deserves the name of a Valiant Man. It hath been said already , that the ills which a Valiant Man is to cope with , must be great and difficult ; for if they be matters of no trouble , they are not so much the object of this Vertue as of Expectation only . The Second thing required to Fortitude is , that it be not the effect of Rashness , but that it be done for a good end . For he is undeservedly called a Valiant Man , who by a blind impulse , and without any regard had to his own strength , ventures upon any thing , and who rather dares and provokes Dangers than fears them : but he , who after a due weighing of the Dangers he is about to engage in , tho' he doth not love them , yet undergoes them with an undaunted Heart , and endures all things when , and how it best becomes him . Hence it is that SENECA defines Fortitude to be the Science of distinguishing what is Evil , and what is not . Forasmuch as this Vertue is not any inconsiderate Rashness or Foolhardiness , nor a love or desire of Dangers , but the knowledge of undergoing and overcoming Dangers . So that Fortitude is made up of these 2 , viz. Honesty , which this Vertue must always have for her end and aim ; and Cautelousness , or weighing of the Danger , before she undertake to grapple with it . IV. Magnanimity , Magnificence , Constancy and Patience are commonly confounded with Fortitude . Moralists commonly divide Fortitude into 4 Species , viz. Magnanimity , Magnificence , Constancy and Patience . But all these have so great an agreement with Fortitude , that they differ from it by some conditions and circumstances only . For Magnificence imports only a circumstance of the Danger , that is to be ventur'd upon , as being supposed to be illustrious , and to the overcoming whereof Glory and Splendor is annext . Magnanimity intimates that generosity and greatness of Soul , which is necessary to the undertaking of dangerous enterprizes , or the enduring of Labour . Constancy implies a kind of Perseverance , whereby the mind is confirmed to stick to its intended purpose , and never basely or cowardly to give it over . Lastly , Patience superadds nothink to Fortitude , save only that it is rather conversant about the enduring of Evil , than in the undertaking of difficult and dangerous performances , and rather suffers , than acts . Wherefore not to insist any longer on these , we proceed to the consideration of those ills , in the overcoming whereof the Glory of Fortitude doth chiefly consist ; and these are either Publick or Private . V. How Publick Ills are to be born and overcome . Publick Evils are , the Destruction of ones own Country , Famine , Plague , War , &c. which we shall be enabled to overcome , by considering that they are not Evils in their own nature , but are made such only by our opinion of them : that Empires and Commonwealths are subject to Vicissitudes , and that nothing is Eternal in this World. That we are to be affected towards our Country , that when we find we can no longer serve it , or be of any advantage to it , we do not hurt our selves ; and that when we see the whole cannot possibly be saved , that at least we endeavour to rescue a part of it . What reason have we to be so much surprized and astonished at any such change , since it is natural for that thing to have an End , which had a Beginning . It is the Eternal decree of Heaven , that all Temporal things must fall , all corruptible things haste away , and all changeable things perish . We shall no longer be amazed to see a Kingdom overthrown , when we consider that the whole frame of this World must be dissolved . Wherefore when we see that we can no ways procure our Countries Liberty , let us at least endeavour to secure our own , and that if we must dye with it , its ruin may oppress us undaunted and without pusillanimous fearfulness . And Lastly , forasmuch as we are assured that all things are ordered by an unerring decree of Providence , the Love of our Country , must give way to our Love of God ; and our Human Wisdom become subject and captivated to the Eternal and Infallible Decree of the Great Creator of all things . VI. A Man endued with true Fortitude , doth easily overcome Private Ills. As to Private Evils , such as Imprisonment , Poverty , Shame or Ignominy , &c. tho' they may seem to some to be hard to bear , yet doth a Valiant Man easily despise them , as knowing that these things are only Evil , according to the opinion of the Vulgar , and that they are afflicting , because we take them to be so . For what great Evil is there in a Prison , that it should afflict a a truly great Soul ? Is it because he is kept from the company of his Friends , and , as it were , excluded from the Society he is a member of ? But a Wise Man knows that a wrongful Imprisonment , is much better than undeserved Liberty ; and that it is infinitely more eligible to suffer for Equities sake , than , by wicked means , to abound with Riches and Honour . Others consider a Prison , as a Retirement , where , tho' the Body be kept in , the Mind may have its unrestrained Flight , and take its unbounded walks in the infinite spaces of Eternity . Who would think himself to be a Prisoner , as long as he may betake himself to the Market , to the Senate , to Heaven it self , and divert himself amongst the Stars ? Have not some writ Books in Prison , and others attain'd Learning ? If to wicked and foolish men it be the Devils House , in which he keeps his Family ; to a wise man it becomes the School of Vertue , where , without impediment , he dedicates himself to Piety and Probity . Why should a man abhor a Prison , who hath been conceived in a Dungeon , and thence borrowed the beginning of his Life ; and who , after he is born , is confined to the Prison of his Body , till it return to the Earth from whence it was taken ? VII . A Valiant Man endures the loss of outward things , and a Wise Man wishes for it . The loss of outward Goods seems to inflict a deeper wound , which yet a wise man is very little sensible of ; who considers all the things of this World , as the furniture of a Lodging in an Inn , the use whereof , for a short time is afforded him , without any right of Possession . The loss of Riches is frequently the happy Mother of Peace and Quiet , and a Tranquility of Mind , which is seldom enjoy'd but by a Soul free from Earthly Cares . ZENO , the Father of the Stoicks , called that day the happiest day of his Life , wherein he lost all his Goods by Shipwrack , and profest himself extreamly engaged to those Winds , which , by ●ashing the Ship wherein his Estate was contained , against the Rocks , had driven him into the safe Haven of Philosophy , where he spent the rest of his Life at the furthest distance from the Storms and tossings of this World. A truly Valiant man therefore knows that he hath no Right to any of these outward things ; no more than the Earth can lay claim to the Light , which ariseth and disappears again in a moment . He calls to mind , that all the conveniencies he enjoys here are the Divine Benefits , which as they are freely granted , so are they taken away again , for just tho' hidden causes . Book . 1. Part. 10. Chap. G. Freman . In. I. Kip. Sculp To the Worshipfull Henry Portman of Orchardiny County of Somerset Esq . This Plate is humbly Dedicated by Rich : Blome IX . How all other Evils are to be obviated by us . And because the limits I have confin'd my self to , do not allow me to reckon up all particular Evils ; I shall only prescribe this general Remedy for them all ; that a man throughly persuade himself , that the Peace and Tranquillity of his Mind doth not depend on Riches , Honours , Friends , Health , and other good things so accounted ; since many are miserable notwithstanding the enjoyment of all these , and many are happy without them . How inconsiderable is the loss of Mony to him , who hath laid up his Treasure in Heaven ? And how little is he concern'd with being banisht from his own Country , whose Heart is ●ixt on a Heavenly ? What hurt is it to have ones Body bound , as long as the Mind is at full liberty ? A truly valian man is always the same ; and as a Hand that is spread , or clutch'd into a fist , continues still the same Hand ; so he bears the same Mind , and looks too , in the blustering dark Storms of Adversity , as in the serene Sunshine of Prosperity : For Death , Diseases , the loss of Goods , Fame and Friends , and other such-like that appear so terrible to some , are the Tributes due to Nature or Fortune , and are to be paid by us , whensoever they are demanded . How much more glorious therefore is it , to put a difference between our Soul and Body , and to keep our Soul free and unconcerned , tho' our Body be pain'd with Aches , shut up in a Dungeon , torn by an Executioner , and assaulted by Death it self . X. Some kinds of false or seeming Fortitude . As there are 4 kinds of true Fortitude , so there are 5 of that which is False and Appearing . The First whereof is the Political or Civil , which by fear of Punishment or Shame , or the hope of Honour , prompts Citizens to the undergoing of Dangers . 2ly . Military , whereby men relying upon their strength or skill , or for hope of reward , cast themselves upon hazarding their Lives and Limbs . 3ly . Angry or Wrathful , whereby men , inflamed with Anger , venture upon the most desperate and dangerous attempts . The 4th . is Experimental , being proper to those , who having escaped many great and eminent Dangers , are confirm'd in a hope of a like good luck in the most dangerous undertakings they set upon . The 5th . is a Blind and Ignorant Fortitude , whereby men continue undaunted , because they are not sensible of the danger they are in . But none of all these is that true Fortitude , whereof we treat here ; for a truly valiant man acts wittingly , knowingly , constantly , only out of Love to Vertue . CHAP. XII . Of Justice . I. Of the Nature of Justice , and whence it hath its Rise . THO' JUSTICE be esteemed the Splendor of all other Vertues , and the Root of all Duties or Offices whatsoever , yet doth it derive its excellency only from the Corruption of men , and takes its rise from their Vices . For as we must first discover the Disease , before that we can be in a condition to Cure it ; so Laws are made use of for a Check and Curb to Vices , and to bind depraved mankind to their good behaviour . For Justice , according to the account the Lawyers gives us thereof , is nothing else but a constant and perpetual Will , of giving to every man his due , L. 10. F. de Just . & Jur. By the word Will , in this definition , we do not understand that Faculty of the Mind , whereby it determinates it self to act , and assents to a thing clearly perceived by it , but rather the Affection or Pnrpose of constantly exercising Justice . Because he is not said to be Just , who simply doth that which is Just , when his chief motive is either Fear , or to obtain the favour of Friends , or the hope of Reward , or other such like ; but he only who performs such actions from his own free will , and out of Love to Justice . II. The Will or Purpose of a Just Man , must be perpetual . It is also added , that this Will or Purpose must be perpetual ; for it is not sufficient for obtaining the Title of a Just Man , now and then to render to another his due ; but it is of absolute necessity that he be in full and constant Resolution of doing the same whenever occasion shall offer . III. Two things are required to the exercise of Justice . There are 2 things wherein the whole requiring or duty of Justice is contained ; the first whereof is to do Good , that is , to pay ones due ; and the other to avoid Evil , that is , to hurt no body , and to decline all those things that may prove hurtful or incommodious to others . Not as if this latter part of Justice did consist in not doing any harm , but in a desire of the Mind to keep off evil from others , and to remove it as far as lies in our Power . IV. The Division of Justice into Legal and Special . Justice , universally considered , is divided into General or Legal , and Special . General is that which considers the Good that is common to many ; and its business is to make good Laws , and observe them when they are made . So that its Object is not every Good that is common to many , but that which conduceth to the advantage of the whole Commonwealth . Special Justice is that which we have before defined to be a Firm Will of giving every one his due , or a Vertue inclining the mind always to render to every man his Right , and that according to Equality . V. Justice divided into Commutative and Distribubutive . Special Justice is subdivided into Commutative and Distributive ; whereof the former is conversant about Compacts , Exchanges , and Contracts ; but the latter consists in distributing Rewards or Punishments , amongst those that are the Members of a Civil Society . The former of these considers things , and the latter Persons ; the first belongs to all , the second only to Princes and Magistrates . VI. These two sorts of Justice are distinguisht from their End. They are also distinguisht by their End , because the end of Distributive Justice is to constitute an equality between Proportion and Proportion ; so as that there may be the same Proportion between the things that are distributed , as there is between the condition of the Persons , to whom the Distribution is made . As for Example , when after a Victory obtained , some Rewards are to be distributed according to the desert and condition of the Persons ; here an exact regard must be had to the merit and dignity of each , so as that the reward which is given may be greater or less according to the Dignity or Worthiness of the Person . But in Commutative Justice , the equality only of the thing received and rendred is considered , so as that the return must be equal , according to Arithmetical Proportion , to that which hath been received , without any respect had either to Merit or Person . The following Vertues are annexed to Justice as its Species , viz. Religion , Piety , Observance , Friendship and Gratitude . VII . What Religion is . Religion is the Top and Principal of all Vertues , whereby we worship and honour GOD with the highest Love and Veneration . For this must be the chiefest affection of Man to adhere firmly to his Author , and to own him as the principle of all Good. For the first business of Religion is to discover GOD , as far as human Frailty will permit , and to persuade Men that he is , or doth exist . For the due worship and honour we pay to GOD , is derived from the knowledge we have of him ; that is , that we are certain that the World was made by him , and Rul'd and Govern'd by his peculiar Providence . And in the next place , that nothing happens to us without his command or permission ; so that all things are design'd for our Good , and whatsoever befalls us , must be believed to have a tendency to our Salvation . For seeing that his knowledge is most perfect , his Power infinite , and his Will most Loving and Beneficent , it is impossible that any thing should befall us , at his disposing , but must needs be for our Good. And tho' we cannot always perceive or understand this , yet we are to consider him as a Physician , who oft displeaseth his Patient , and puts him to Pain , that he may heal and make him sound . VIII . We must resign and submit our selves with all our concerns to GOD. Relying upon this assurance we must submit all our concerns to him , and acknowledge that we are come into this World , not to prescribe Laws to others , but to follow those that are already established , and to yield a strict obedience to thosewhich we are surely persuaded proceeded from him . Moreover we are in such a manner to order our Prayers we offer to him , as that we may obtain what is consonant and agreeable with this Providence , and to what he hath from Eternity decreed should come to pass . For he attempts , as it were , to corrupt the great Judge of all the World , who begs any thing of him , but what is the purpose of his Will. And above all things we are to remember , that we can never offer any more acceptable Prayers to him , or profitable to our selves , than those whereby we entreat him to moderate and subdue our Affections , and to captivate and over-rule our Will , that we may always embrace what is best . We must also be assured and fully persuaded , that no Sacrifices are more pleasing to him , than such as proceed from a pure Heart , and which are accompanied with an Innocent Life . Let us therefore consecrate and dedicate our Minds to be his Temple , where we may offer Sacrifices to him , breath forth our pure Affections , and present to him the Oblations of our Love , Worship , Veneration and Subjection . And after we have done all this , let us not be ashamed to make a frank and open profession , that we have done nothing worthy of his Divine Majesty , or that is worth his acceptance . IX . Piety or Love to our Country . Having given to GOD the Honour due to him , we must proceed to the Reverence that is due to Parents , who are the Channels , whereby we have been conveighed into this World , And under this notion our Native Country first presents it self , which under a feigned name requires a true Love of us ; forasmuch as of all Societies and Fellowships , as CICERO saith , none is more grateful and pleasing , than that which we have with the Commonwealth whereof we are Members . Our Parents are Dear , our Children , Relations and familiar Friends are Dear , but it is our Country alone that comprehends all these Endearments , for which no good Man would make any question to hazard his Life , to procure its Weal and Happiness . Indeed our Country contains all that is near or dear unto us , so that as long as that is safe , they are so too , but if that miscarry , all these are lost together with it . X. Observance to Parents . Next to the Love we owe to our Country follows the observance and Love which is due to our Parents , who by special Providence have been destinated to bring us into the World , and who have been in stead of GOD , by imparting Life to us . Who , if they be Godly and Vertuous , deserve a double Honour at our Hands , as promoting and leading us by their Example , Exhortations and Precepts , to Vertue and good Manners , and make it their utmost endeavour that we may be Happy in this Life . If they be harsh and perverse , yet we must always remember that still they are our Parents , and that we are beholden to them for our Lives . And accordingly by natural instinct we are led to relieve our Parents whensoever they are reduc'd to any necessity ; and for the saving of them , not only to hazard the loss of all we have , but also of our very Lives . Heathens have done no less , who with the danger of their own Lives , and neglecting their Riches , have only made it their business and care to save their Parents Lives . Hence it was that AENEAS obtained the name of Pious , for having carried his Father safe out of the Flames of Troy , and through the midst of his Enemies , Aeneid . 6. Him I through raging Flames did on my Shoulders bear , Through Armed Troops , and Darts that clogd the Air. Let us not disdain herein to imitate a Heathen , and to learn from those who by the sole instinct of Humanity exposed their own Lives , to save their Parents . XI . Observance towards superiors . Observance is a Species of Justice , whereby we Honour and Reverence those that are our Superiours in Age , Condition or Gifts ; for to all these Honour is due , as a reward of their Labor and Dignity : For seeing that they take care for the publick Good , and endeavour to promote the Happiness of their fellow Citizens , nothing can be rendred to them in lieu hereof but Honour and Respect ; for should they demand any thing else , they would be so far from being honourable , that they would appear to all , to be mean and covetous . XII . Friendship between Equals . Forasmuch as Friendship is a kind of Equality , it must also belong to Justice , as being nothing else but a mutual Benevolence , by which some persons mutually desire to do good to each other . This is the best of those things that can be obtained in this Life , as being the ground and foundation of our Happiness . This is that which takes away all the bitterness of this Life , and exalts all the sweets and pleasures of it . In Prosperity it furnisheth us with an object for our Beneficence , in Adversity and Misery it affords us an object which we may relieve and comfort . Friendship teacheth us when we are young , comforts and cherisheth us when we are old , and being never forgetful of her Duty , doth at all times help and assist us . Wherefore it is only to be lookt for amongst good Men , and they only are to be beloved with this Love of Friendship , whom of a long time we have known to be honest Men , and are far more considerable for their Vertus than for their Riches : And accordingly we are to endeavour to gain such as these by all occasions , and to preserve their Friendship when gained by all good Offices . XIII . Gratitude or Thankfulness . Gratitude is a Vertue that preserves a pleasing and acceptable Memory of Benefits received . This part of Justice seems to comprehend all other Vertues , forasmuch as no Man can be Pious , Friendly or Observant , that doth not live in the exercise of Gratitude . For what else is Piety , according to TULLY , but a grateful Affection and inclination towards our Parents ? Who are good Citizens , and deserve well of their Country both at home , and in the Wars abroad , but such as are mindful of the Benefits they have received from their Country ? Who are Holy and Godly , but those who with a thankful Heart and Mind full of acknowledgement , give GOD the Glory of all his Benefits ? What Pleasure can there be in this Life without Friendship ? And what Friendship can there be betwixt ungrateful Men ? Who amongst us , that hath been liberally educated , doth not with Joy and Gratitude entertain the Memory of those who have educated us , and been our Masters to instruct us in good Literature and Manners ? Who is , or ever was so Rich , that his Wealth was equivalent to the Love and good Offices of many Friends ? Which cannot subsist without Gratitude , and a thankful remembrance of Benefits received . Wherefore it is the Duty of every one to endeavour to carry himself thankful towards all , and never to forget any Kindness done to him , if ever he desire to please and satisfie himself or others . There be also some other Vertues , that are contained within the compass of Justice , viz. Charity , Humanity , Civility , Affability , Hospitality and Liberality . XIV . Charity . Charity is that Vertue which incites us to Love all Men , and to succour and relieve them according to our ability . For seeing that the Happiness of this Life consists in Action ; we are not only to bear a good Will to our Neighbours , but must endeavour to assist and help them by our Works and Actions . For as the Sun is beneficial to all , and doth not pick and choose some only , to whom he may communicate his Light ; so likewise must our Love be extended to all , and being dilated by this Vertue of Charity , embrace all , and do good to all . XV. Humanity . Humanity is that Vertue whereby with a kind of Benevolence , we express and restifie to all Men our readiness to serve and oblige them , from a due sense of the Dignity of Man , and our common Bond of Consanguinity . XVI . Civility . Civility is a Vertue , whereby a Man from the Sense of common Humanity , doth speak courteously to all those that have any business with him , or that he meets with ; and makes use of such Words and Gestures , as do express a kind of Benignity and Benevolence . XVII . Affability . Affability is that Vertue , whereby a Man in his discourse with others , as well by his readiness and easiness to hear , as by the sweetness and agreableness of his Speech , doth gain the Hearts of those he hath to do with . XVIII . Hospitality . Hospitality is a Vertue , which makes us kind and obliging to Strangers , by giving them kind and free Entertainment ; not only because they are Men , but because being Strangers and out of their own Land , they may want many things , which at home and in their own Country they plenteously enjoy . XIX . Liberality . Liberality is a Vertue , which prompts us to be beneficial to others , freely and spontaneously according to our Abilities . This Vertue hath 2 extreams , for if our Beneficence be deficient , that is , less than it ought , we deserve the name of Covetous ; but if we exceed in our Gifts and Kindnesses , so as to give more than we ought , to others , then we ought , or at another season , or for other reasons than we ought , we fall into a Vice , and are justly called Prodigal . And accordingly , saith CICERO , those Men are Prodigal who by Feastings , Doles and Shews , or by the vast charges of Plays and Publick Huntings , squander away their Mony upon such things , the memory whereof is either none at all , or very short lived . But such are truly Liberal , who redeem Slaves , pay the Debts of their Friends or Poor Men , or assist them in the bestowing of their Sons or Daughters , or for the getting of an honest livelyhood . CHAP. XIII . Of the usefulness of the Passions or Affections of the Soul. I. The Opinnion of the Stoicks . FOrasmuch as the Vertues do arise from the Affections of the Soul , and that they are wholly conversant and taken up about the Ruling and managing of them , I should be wanting to the design of this Discourse , if I did not examin the usefulness of them , and shew how many several ways they may be advantageous to Men. It is very notorious with what Virulence the Stoicks inveigh against the Passions , who being too solicitous for the Tranquility of their Wise Man , have supposed them to be altogether Evil , and therefore to be avoided by him , whom they will have to be exempt from all Vices , and not subject to any Perturbations . I confess my self formerly to have pleaded their Cause in my Discourse entitled , L' Homme sans Passions , and not only to have maintained SENECA'S Opinion , but also according to my slender Ability , endeavour'd to advance and exalt it . But forasmuch as I now follow the sentiments of DES CARTES , and my business is not to explain the Opinions of others , but only to lay open Truth , no understanding man will reproach me of Lightness or Inconstancy , for going about to unfold the usefulness of the Passions , and leaving the Stoicks , consider Man , not as Translated amongst the Glorified Saints in Heaven , but as placed amongst his Mortal Brethren here on Earth . II. Vertues without the Passions are weak and languishing . For the clearing of what I intend to deliver on this Point , it will be of use to call to mind that the Passions of the Mind , are certain Sensations or Perceptions of the Soul , which have a special Relation to the same , and are produc'd and maintained by the motion of the Spirits : As hath been declared more at large , in the foregoing part of this Institution . Now it is apparent , that these Commotions of Mind do greatly assist , corroborate and invigorate all Human Functions . For doth not daily experience teach us , that all Human Actions are dull and liveless without them , and that the vigor of the Mind , where they are absent , ceaseth and fails ? Reason it self in many cases appears dull and heavy , if it want the brisk company of Affections , and becomes stupid , when not excited with the Spurrs and Goads of the Passions ? Where shall we meet with Fortitude , that undertakes the most hardy and difficult attempts ? Which pursues Dangers ? Which dares and provokes the most terrible Evils , except it be assisted by Anger , which excites it to revenge the injuries and affronts done to ones Country , Parents or Friends ? Prudence perisheth , where Fear is wanting to put it upon making provision for the Future : For it is this Monitor puts Prudence in mind of what Evils may happen , how she may obviate them , and by what means repel them ? Who ever attempted any thing that was Great or Generous , without a strong and exalted desire ? What Eminent Orator , or Famous Philosopher ever conceived or brought forth , any thing that was Rare and Excellent without it ? Why are so many toilsome and expenceful Travels undertaken , to visit unknown Nations and Countries , but from an ardent desire of Seeing and Learning things unknown ? Who loves Vertue , that is not accompanied with Joy and Gladness : For bare and naked Vertue is neglected and despised , except it promise , and actually bestow pleasure and satisfaction upon its Followers . III. Two things are required to make the Affections good . The Affections therefore are good , and contribute to the Perfection of Human Life , as long as they observe these 2 following Rules . First , that the Object they are conversant about be lawful : For Affections seem to have been bestowed upon us by the Author of Nature , that they might excite us to the pursuit of Vertue , and the declining of Vice. The Second is , that our Passions be proportioned to their Objects , and comport with the Light of Reason in all their motions . For such is the force and power of Reason , that it throughly searcheth into , and contemplates the nature of Objects , perceives the Qualities of each of them , and distinguisheth them from others : He who follows her , is safe and secure from Error , and fore-armed against all deceptions whatsoever . So that he has his Ears open to the instructions of Reason , who loves the best Good with the Highest love and Affection , and all other things according to their several degrees of worth and merit . IV. Passions are useful to the Actions of Life . The Passions therefore are very useful to the Actions of Human Life , as long as they are subject to the command of Reason , and attempt nothing contrary to its Dictates . For they are the Master of Vertue ; and as Fire becomes extinct , when it wants fewel , so without the Affections Vertue remains idle , and unactive . For what great thing can it ever attempt , as long as it continues fixt in its own mean or middle Point , and is not spurred on by the Passions ? As long as the timorous Thoughts of Human Wit , are not excited to some choice or other ? As long as Fortitude is not stirr'd up to gallant Actions ? As long as Justice is not Arm'd with her Sword ? And lastly , as long as Temperance is not kept within its due bounds by Fear , Shame and the Emulation of our Perfidious Nature ? How are all Human Functions over-whelm'd with a deep Sleep , where for want of the awakening motion of the Passions , Men are not rowzed from Rest and Idleness , to Briskness and Activity ? V. An Objection a gainst the usefulness of the Passions . But you 'l object that most of the Passions are Evil , and lead us headlong to Vice : For as they break forth suddenly upon the Soul , so they hurry her away without expecting the advice and counsel of Reason , and reduce her to the blind and wild condition of Beasts ; like unruly Horses that will not be restrained , running headlong into the Precipices of unlawful Lusts , accursed Envy and Hatred , and mad Superstitions . VI. The Objection answered . To which I answer , that what I have said concerning the usefulness of the Passions , must only be understood of them , in asmuch as they are subject to the command and guidance of Reason , and proportion'd to their object and end ; which then only takes place when those things are Loved that ought to be Loved , and when such Objects are loved in a higher degree , which because of their greater worth deserve more of our Love. For Love and the rest of the Affections , are never Evil , as long as they keep within their Bounds , and pursue only those Objects , that are agreeable to Reason . But as there are some Passions that are of no use at all to Men except they be moderated , and reduced to Mediocrity , to the end they may be subservient to the acquisition of Vertue : So some of them are so very good of their own Nature , that the more they exceed the better they are ; for in asmuch as they always follow the Guidance of Reason , they cannot but be upon all occasions , fruitful and advantageous . VIII . A twofold excess is to be considered of in the Passions . For there is a twofold excess in the Passions , the one whereof changeth the nature of a thing , and of Good makes it become Evil , and by this means hinders it from continuing in subjection to Reason . So we find that some Affections do to that degree oppose the motions of Reason , and depress the force of the Mind , that being wholly abandon'd by it , they degenerate into down right Vices . The other excess is , whereby the degree or measure of the Passion only is encreased , and of a Good one is made Better . Thus Boldness , or as others rather express it , Rashness , is not said to be an excess of Fortitude , save only when it transgresseth the Bounds of Reason . But yet Fortitude is also capable of another kind of Excess , even whilst it continues within the said Bounds ; which consists in this , that it is not subject to be shaken or moved by any Doubt or Fear : Which Excess is so far from being Blame-worthy or Reproachful , that the Tongues of all Orators are not sufficient to extol and commend it , this being the peculiar Vertue of Heroes , whom the Antients ranked amongst the Gods. CHAP. XIV . What is the use of Wonder or Admiration . I. Some condemn Admiration . MOST of the Antients had but a mean esteem for Admiration , as looking upon it to be the Vice of Ignorant Persons ; and therefore took it to be an Enemy to Human Felicity , and the fruitful Mother of Sorrow , Fear , Desire , and other Passions that are the Tormentors of Mankind . And accordingly HORACE supposeth that Men would be exempt from all these , if once they could leave their wondring , Lib. 1. Epist. Nothing t' admire is th' only thing that can Make and preserve a Blest and Happy Man. II. Wonder or Admiration is necessary for the acquiring of Sciences But these men do not seem to have rightly understood the nature of Admiration , but rather to have confounded it with Fear , which beholds every thing with Trembling , and is affrighted at all the unusual Objects it meets with . But forasmuch as Admiration is nothing else but a suddain Occupation of the Mind , whereby it is strongly carried to the attentive consideration of those Objects , that appear rare and strange unto it , no body can deny but that it must needs be very conducive to the Learning and Remembring of those things we were ignorant of before . For it is evident , that there are chiefly 2 Principles which concur to the invention of every Art , viz. Admiration ; because as soon as any new thing is suddainly presented to our Understanding , our Mind is presently struck with Admiration , and is powerfully rowzed to the searching into the Nature of it ; and Experience , because the Mind , being allured by the Admiration of a Rare and Uncommon Object , never rests till it have found by Experiment , what the Nature of it is , and the Cause of it . So they who first observed the Eclipse of the Sun , being seized thereat with extraordinary wonder , it ingaged them to search into the Cause of this unknown Effect , till after many repeated experiments , they found that the same was caused by the Moons moving between the Sun and the Earth ; whence they gather'd this Proposition of certain and undoubted Truth , that a Solar Eclipse is produced by the interposition of the Moon betwixt the Earth and the Sun. III. Those who are not apt to Wonder , are generally unlearned . The necessity of Admiration , in order to the attaining of Knowledge , is very apparent from this one instance , that commonly those who are destitute , or not apt to be touch'd with this Passion , are commonly unlearned , and very ignorant . For , notwithstanding that many things present themselves to our Understanding , or offer themselves to our Senses , yet will they never be fixt in our Memory , except by some Passion they be imprest in our Brain , or by the intent application of our Understanding , being determined by our Will to a serious Attention . For rare and unusual Objects encrease our Attention , because by their Novelty they leave a deeper impress of themselves ; and the Spirits flowing thither , do encrease the application of the Mind ; by which means we frame more lively and lasting Idea's of things . Moreover , Admiration is of great use for our attaining of the knowledge of things which formerly we were ignorant of : For a Man that is seized with Admiration , compares the unknown Object , with things that he hath formerly known ; by which means he sees it to be different , and enquires why it differs from them . Hence it is that Admiration is called the Beginning of Philosophy , the Seed of Knowledge , and Abrupt Science . To admire , saith PLATO , is much the Affection of a Philosopher ; neither indeed can any other Original or Beginning of Philosophy be assigned but this . IV. The Esteem and due Value of ones self , how it may be profitable . The esteem of ones self , which is a Species of Admiration , is conducive to every man , in as much as it shews him , that he hath something that is his own , and possesseth some Perfections , in consideration whereof he may respect and love himself more intimately than all other things . For Self-Love is a Lawful Affection , it being allowed to every man to consider himself before others . Moreover , a man by loving himself , imitates GOD , who , like a Circle , turns into , and terminates in himself , and loves himself with the Highest and Essential Love. This is the Property of Wise Men , who , subduing all foreign things to their Mind , do so highly esteem the dignity thereof , that they account it the highest Sacriledge to defile it with filthy and vain thoughts . Hence it is that they have an awful regard for themselves as for Deities ; and abhor to commit any thing that might make their Consciences to condemn them . And to this purpose ARISTOTLE in the Second Book of his Politicks , proves that a due Esteem of our selves is a Vertuous Quality ; and if at any time Self-Love is blamed , that is only so far as it exceeds its Bounds , and makes us to love our selves over-much . V. The undervaluing of ones self is a great help to Humility . On the other hand , the Contempt or Low esteem of ones self , by which a man despiseth his own worth and merit , is very conducive to Humility , and makes him refuse the Honour others render to him . This Vertue teacheth him , that the praises of others are useful to him , as long as he continues vile in his own Eyes ; and that he is not to mind what others say of him , as long as he is conscious to his own defects and meanness , and that he wants those very Vertues which others extol him for . This Passion , moreover , hath this good effect , that it makes us to despise no man ; but owning our selves to be men , prompts us to measure their Vices with the same Equity wherewith we censure our own . For it is but Reasonable and Equitable , that knowing our own weakness , we should take pity on others , and according to the command of Charity , think better of them than of our selves : For indeed what do we know , but they may far exceed us in Vertue ? and tho' they have fallen as Sinners ▪ yet may have risen again as Saints . We may lawfully contemn our selves , but cannot despise any other without Sin , and being injurious to our Neighbour . VI. Venerati●● teacheth as , to respect every one according to his Merit . VENERATION , whereby the Soul is engaged to esteem the Object it respects and honours , and to subject it self to the same , teacheth us to Reverence those Powers that are above us , and to render unto them the Honour that is their due . For seeing that Authority is various , and that the Persons that are above us , are not all of them of equal Dignity , Veneration prompts us to honour every one of them , according to the different Power and Order they have in the World , rendring them a various Respect and Worship , according to the difference of their Merit and Dignity . VII . Our Parents . In the first place therefore , it puts us in mind of the Reverence we owe to our Parents , as to GOD's Vicegerents , who have brought us forth into the World , who with anxious and sollicitous care have educated us , who have instructed us in the Duties of Religion , framed us to Vertue , and furnisht us with Knowledge and Learning . For since it is most agreeable to Nature , to Love those who Love us ; how great is that Love which we owe to our Parents , seeing that our Love , be it never so intense , will not equal their most tender Care and good Will towards us ? VIII . Magistrates In the next place , it adviseth us to honour Magistrates , and such as are in publick places of Trust and Authority . For seeing that they watch for the Weal and Welfare of the Commonwealth , and are set over the People , to the end they may assist and help them , procure their safety , and secure their Estates , they certainly deserve Honour and Respect from all whose happiness and welfare they contribute to . IX . Wise men . This Affection also teacheth us to Honour and esteem those that excel in Wisdom and Vertue , and do recommend them , by the Examples to all others . X. Disdain . Neither is the Passion of Disdain altogether useless , whereby the mind of man contemns some persons , and accounts them so much below it self , as to know that it is not in their Power to do him either Good or Evil. For this Passion is not a little conducive to the Quiet of the Mind , by raising it above the reach of any Mortal Power , making it to be unconcerned at their Promises , and fearless of their Threats . Especially in cases where the Cause of Vertue is to be appear'd for , or Vertue to be maintain'd . CHAP. XV. Of the End or Vsefulness of Love and Hatred , and the Interpretation of them . I. Love teaches us to do good to others . IT is an in-born instinct of the Will of Man , to desire that which is Good , and to testifie its displeasure , when it cannot attain it . Thus we see that a Covetous Man desires Riches , and an Ambitious Person pursues Honours , because they look upon these things as Good for themselves , and are with earnest desire carried towards them , as to things perfective of their Nature . For Love is nothing else but a Thought or Cogitation of the Mind , by which it is stirred up to join it self in Will to those Objects which appear agreeable to it . So that this Passion puts us in mind to do good , not only to our selves , but to others also : Forasmuch as all men are united to us by a likeness of Nature , and constitute but one Politick Body or Society ; wherefore also we are drawn by a natural impulse to bestow Benefits upon them , and to procure their profit and advantage , as far as lies in our way . For Love is a Beneficent Passion , and rejoyceth to diffuse it self , to a vast variety of Objects . Hence it is that PLATO feigns it to be the medium between that which is Deformed or Ugly , and that which is Beautiful and Lovely ; between that which is Mortal and that which is Immortal , because it cherisheth and maintains Human Society ; and joyning contraries together , links the Proud with the Humble , and the Poor with the Rich. We shall therefore make a good use of this Passion , by assisting and relieving our Neighbours , and by desiring and promoting the good and welfare , not only of our selves , but of others also . II. And to hurt no Body . But forasmuch as some , under pretext of helping their Neighbours , do injure them : The Interpretation of this Affection is , that in doing good we take care that we be not hurtful or prejudicial to any : but that we assist them willingly and heartily , and endeavour to promote their good from a pure instinct of Charity , and be to them as Light which penetrates all Diaphanous Bodies , without any hurt or prejudice , either to them or it self . III. Devotion excites us to love GOD. By Devotion , which is a Species of Love , whereby the Lover esteems the Beloved Object more than himself , we are taught to love GOD , and embrace him with the utmost extent and strength of our Affections . To which Divine Love we may arrive , by considering that GOD is a Spirit , or a Thinking Being , upon which account , seeing that our Soul is of affinity with his Nature , we are persuaded to believe , that it is an Emanation from his Supream Intelligence , and , as it were , a Particle of the Divine Breath . Moreover considering the Immense Power whereby he created the World , and all the things that are , without any praeexistent matter ; the infinite reach and extent of his Providence , which , with one view , beholds whatsoever is , was , or is to come , yea , or can be : the unerring certainty of his Decrees , which tho' they be absolutely unchangeable , yet do not in the least prejudice the liberty of Man's Will. And lastly , by making a deep reflection upon our own great weakness , and on the other hand , on the Amplitude of the Universe , and all Created Beings , how at first they proceeded from GOD , and do still so depend on his Power , that they cannot subsist a moment without his Care and Providence . For the due consideration of all these things , will kindle a desire in us to be joyned to him in Will , make us to venerate his Decrees , as judging them most necessary and equal , and to wish for nothing more than to obey his Will , and for his Glory make no difficulty to hazard the loss of all things , even of our Lives , and in a word , to undertake or suffer any thing that may be offered to us . IV. Complacency is a help to the Love of Vertue . Complacency is another Species of Love , whereby the Soul is carried out in desire towards Beautiful Objects , being greatly taken , and charmed with their aspect . For Beauty hath something whereby it powerfully recommends it self , so as to allure the Eyes of Spectators , and force an admittance into their Hearts . Hence the Antients were pleased to call it a silent Imposture , and a Dominion which needs neither Arms nor Guards , such as persuades without words , and makes all men readily to submit to its Imperious Yoke . This Passion prompts us to desire the Beauty of Worldly things , and wholly to betake our selves to the Love of Vertue , and by trampling upon all Earthly Enjoyments , to aspire after Coelestial Objects . For if a comly shape of the Body , if a sweet and beautiful Aspect , if the sparkling lustre of a brisk and lively Eye be of force enough to astonish , ravish and surprize , what a degree of Love , think we , will not Vertue be able to enkindle in the Hearts of its Contemplators , who , if we will believe SENECA , sends her Light , as a Harbinger before her , into the Hearts of all Men , so as that even those who do not follow her , are convinced of her Beauty ? What can be compared to the Life and Vigor which Fortitude communicates to the Eyes , to the Intention they derive from Prudence ? to the Reverence wherewith Modesty adorns them ? to the Briskness and Serenity which Joy affords them ? and lastly to the Awfulness which Severity puts upon them ? What can be imagined more Beautiful than Justice , which makes Princes most like to GOD ? What more comly than Temperance , which sets bounds to Pleasures , and never embraceth them for their own sake ? What more sweet and lovely than Humanity , which is affable and courteous to all , and doth so far only desire it s own Good , as the same may be serviceable and profitable to others ? What more grateful and pleasing than Clemency , which spares the Blood of another as its own , which by by its kindness turns and overcomes the minds of the wicked , and sweetly comforts the afflicted and miserable ? So that by beholding of Beautiful Objects , we are insensibly led to the love of Vertue , and taught to despise and neglect these frail and changeable Beauties , and to pursue the Eternal Excellence and Comliness of Vertue and Goodness . V. Hatred makes us to abhor Vice. Neither is the Passion of Hatred altogether useless , where it meets with Objects , on which it may justly discharge its fury . For we hate all those things that hurt us , or injure our Soul or Body ; and therefore we have good reason to abhor our Vices , and to avoid all those things that disturb our Peace and Tranquillity . For if it be natural to the Soul to separate it self by hatred from the things that are hurtful to it , what Evil ought she more to detest , than that which , in a manner , destroys and annihilates it ? For the Soul dies whilst it commits Sin , and lays violent hands upon it self , as oft as it transgresseth the Commands of GOD , and thwarts the Dictates of its Conscience . Wherefore it is but justice to hate our selves upon the account of Sin , and to be inflam'd with an holy Anger against our Defects and Transgressions , forasmuch as by means thereof we are turned aside from our Chiefest Good , and depart from him , with whom to be united by Love is the Sovereign Bliss of Man. VI. Horrour or Abhorrence makes us to avoid Bad Company . The Horror we are seiz'd with at the beholding of ugly and deformed Objects , teacheth us to avoid all manner of Wickedness and Pravity , and to eschew the company and familiarity of those , who are likely to infect us with their corrupt manners . For seeing there is nothing in Nature more ugly and deformed than a wicked and perverse Man , we have all the reason in the World to avoid such a one , as we would do the Plague , lest we should be corrupted by his familiarity , and his Vices insensibly should get ground of us . Drunken Companions easily draw in their Associates to the same Excess ; and Lustful and Unclean Persons infect those they converse with , and effeminate the Minds of those that keep them company . Covetous Persons inspire their familiar Friends with a Stingy Humour . But what Body can be so deformed and monstrous , what Skin so scabby and ulcerous , as to compare with the ugliness and filthiness of Vice , which changes Men into Beasts ? This Passion therefore will be of great good use to us , if it prompt us to detest the depraved manner of wicked men , or whatsoever can defile or weaken our Innocence . CHAP. XVI . Of what use the Passion of Desire is . I. Desire reacheth after the Things it wants . THE End and use of Desire is manifest from its Definition , which declares it to be a Passion , whereby the Soul is carried towards a Good , considered as Future . Which words sufficiently shew that this Passion aspires after those things which it wants , and wishes the conversation of those which it enjoys . The Soul by Desire , is carried to the Possession or enjoyment of some Good , like an Arrow driven from a Bow , and being raised upon the wings thereof , flies to the Mark. II. Hope enticeth the Soul to desire Beatitude . Accordingly the Soul by Hope , which is the first Species of Desire , is stirred up to desire Happiness , and to enjoy that Good , which alone can satiate it . For as Bodies , by motion , approach nearer to their Centers ; so the Soul , through Hope , tends to Happiness , and by its earnest wishes and desires , hastens that , which it so much longs for . Wherefore it looks upon these days , during which it is compelled to live here amongst Mortals , as already past and gone ; and neglecting things present , esteems them as past , before ever they are come . And by this means it is neither corrupted by the Prosperity of this World , nor cast down by Adversity ; applying the whole drift of her intent to this only , that none of these things may be a hinderance to her in her Progress to Bliss and Felicity . O Thrice Happy and Blissful Hope ! whose Promises are so great and glorious , that they make a Man Happy and Blessed , even before he is in full possession of it . III. Fear teacheth Circumspection and Cautelousness . On the contrary , Fear adviseth us to undertake nothing without Heedfulness and Circumspection , and to avoid Rashness in all our Actions . In the first place it teacheth us to examin all those things that may any way hinder or stop our intent , and to deliberate maturely and at leisure , about all those matters that are liable to change . For Praecipitancy is without foresight , and cannot but frequently have Repentance for its Companion . And in the next place , that we foresee things to come , and with great exactness and diligence , consider the Evils that may possibly happen to us : For foreseen evils are less afflictive , and we bear those things much more easily , that have been our constant expectation . Fear therefore warns us , that standing in our Watch-Tower , we should keep a watchful Eye upon things to come ; and as far as Human Foresight permits , anticipate the mutability of Fortune , the endeavours of our Enemies , and the insultings of Men in Power . For Afflictions and Hardships are only intollerable to him , whom they seize all on a suddain and at unawares , and whom they strike before they are discern'd . IV. The Usefulness of Jealousie . Jealousie will stand us in good stead , when by it we are stirr'd up to endeavour to secure the Possession of those things which we count the best and most excellent of all others . This Passion moves and actuates the Philosophers , when they contend for the Truth , which they suppose themselves to have espoused , as for their nearest and dearest Interest , and endeavour to vindicate it from all Suspicion of Errour , in opposition to all the Attacks and Assaults of their Adversaries . Hence it is that Controversies about Religion are maintained in the Minds of People , whilst every one is jealous , lest the Religion he professeth should suffer any thing by his slackness or indifferency , or that he should be forced to desert it . Thus Princes and others , that have an Honourable Name in the World , are extreamly Jealous of their Good Name and Reputation , and leave no Stone unturn'd to preserve the same in its full Luster and Glory ; because they look upon the Opinion which others have of their Vertue , to be above all things most conducive to their Honour and Esteem , as well as the safest and strongest guard , against the Assaults of their Enemies . In a word , Jealousie may be of use to all , if the Good , the loss whereof they apprehend , be of great Concern to them , and such as they cannot be deprived of without great Shame or Loss . For as no Body faintly and carelesly Endeavours the obtaining of Riches or Honour ; so it is no wonder to see Men strangely moved and concern'd , whenever they are threatned with the loss of either of them . V. Despair is sometimes of use to Lovers . Altho' Despair be the most odious of all Passions , and be generally accounted the Common Enemy of Mankind , yet is it not altogether without its Usefulness . For inasmuch as it considers the desired Object as Impossible , and excludes all hope of ever obtaining it , it may be of advantage to Lovers , when they find themseves neglected and despised by the beloved Object ; because then this Passion strongly persuades them to give over their vain pursuit , and to cease their frustraneous Endeavours , and to quit themselves of their Ill-advised Desires . It tells Men , that it is Madness to doat upon an ungrateful and insensible Object , and to cast away our Love upon that which cannot , or will not love us again . VI. Despair makes Souldiers Valiant . As Despair proves advantagious to Lovers , so likewise it is useful to Souldiers , in cases where they are prest with Difficulties , and see no way open to escape their Enemies : For then it prompts them , since they are necessitated to engage those that are much stronger than themselves ; and that in all probability they must dye , to sell their Lives as dear as they can , and in some kind make amends for their Loss , by causing a greater Loss to their Enemies . For Necessity often steels Cowards with Valour ; and Despair hath often made weak and fearful Troops to triumph over Conquerours . This Passion inspir'd LEONIDAS , when with a small Handful of Souldiers , he set upon Xerxes , whose Fleet the Sea , and whose Army the Land was scarcely able to contain . For having posted himself with 300 Men in the Narrow-passage of the Thermopylae , he stood the shock of that prodigious Power , and died valiantly with his whole little Army . VII . Fluctuation , or Doubtfulness of Mind , useful in the Choice of things . Fluctuation of Mind is necessary , when we are engaged in the Election of Good things ; for seeing that one Good is preferrable before another , and that all are not of the same Value , we have need of time before we can certainly know , whether the Judgment we frame concerning Things , be conformable to them , and consonant to all the Circumstances that concur to their Perfection . For we cannot , like Angels , understand things that are offer'd to us , in an Instant ; our Knowledge is successive , and as the Sun from the Dawning increaseth to the perfect Day , so some time is to be allowed to our Soul , that after a mature Reflexion of Judgment , she may deliberate of things , and consider what she ought to determine concerning them . For seeing that things are various and manifold , and not equal in degrees of Goodness , their Nature must be diligently examin'd by us , that we may come to know what is Good , what Better , and what Best of all , For Men are very apt to favour their first Thoughts , and either from an Affection for Novelty , or too great Indulgence and Love for the Off-spring of their own Brain , to embrace that which first presents it self to their Minds . Wherefore Delay , which Fluctuation of Mind doth suppose , is very necessary to discern Truth from Falshood , and to make a due distinction betwixt Good and Better . VIII . Cuorage and Boldness are grent Helps to Fortitude . Courage and Boldness are good Helps to Fortitude , and superadd both Force and a Spur to that most Generous Vertue . For Fortitude , without the Company of Boldness , is but faint and languishing , and stands in need to be excited by its Heat , to the attempting and undertaking of Great and Worthy Atchievements . This Passion may lawfully and worthily be employed , in repelling the Enemies of our Country , and in defending the Life and Honour of our Prince . Nature teacheth us to venture the loss of our Hand , for the saving of our Head ; and to expose any part of our Body , to save the whole . This is that which Boldness performs , and when Necessity requires , does not only meet Dangers , but provokes and contemns them . IX . Emulation is conducive to Vertue . Emulation spurs us on to imitate the glorious Actions of Famous Men , by studying and eying the Examples of such as do exceed us in Vertue and Learning . It sets before our Eyes their Atchievments , as so many Originals for us to express , and to take Copy by , suitable to the Requirings both of Reason and Nature . For there is an inborn Inclination in all Men , to become like their Superiours and Betters . This makes us to be always in the pursuit of those Vertues and Perfections , which we see shining so illustrious in others , and enflames us with desire to imitate the Manners and good Qualities of those who excel us , especially in Intellectual Endowments . CHAP. XVII . Of the Vsefulness of Joy and Sorrow . I. All pursue Pleasure . IT is not without Reason that some Physicians tell us , That the desire of Pleasure is Natural to man ; for it is subservient to the Mind , and fills and satiates the wants of the Body . Young men are inclined to Pleasure and Oblectation , because it is serviceable to the ready and vigorous performance of all Bodily Functions and Exercises , and conduceth to the increase and good state of it . Melancholy Persons addict themselves to Pleasure , because otherwise the Humour that predominates in them would consume their Body , and by its malignity make all the Humours thereof eager and corrosive . Old men delight in Merriment ; for seeing that the digestive Faculty of their Stomach is slow and weak , and that the Blood and other Humours move but slowly through their Bodies , they are with great eagerness push'd forwards to Pleasure , as to the only Remedy against all these Distempers . II. Joy is grateful to the Mind . What Pleasure is to the Body , that Joy or Gladness is to the Mind ; for it always is a Consequent of its Tranquillity , and doth in a manner perfect and compleat all its Operations . For even as by a Natural Instinct we are carried to that which is Good , and have an Aversion for that which is Evil ; so we pursue Joy and Pleasure under the Notion of its being Good , and hate Sorrow , because it appears to us to be Evil. But because Joy may be infected by its Objects , and be conversant about those things which are unworthy of our Esteem or Regard , we must examin what is the right use of it , and to what Matters it may lawfully be applied . III. Joy always doth accompany good Actions . And indeed Joy and Gladness are not to be found , but in the Exercise of Vertue , and in the pursuit of Honesty ; seeing that all other Good things , which we do so solicitously look after , do not bring forth any true Joy , but only some false and feigned Chearfulness and Mirth , which is always accompanied with Anxiety or Repentance . For there can be no true Joy , but that which springs from the Consciousness of Vertue and Goodness . IV. Derision is useful for the Reproof of Faults . Derision , which consists of Joy and Hatred , and is occasion'd by the deprehending of some slight or Venial fault or defect , is frequently of good use for the amendment of Faults and lesser Immoralities , making him who is derided , to be more watchful over his Actions . For finding his Immoralities , or undecent Manners , to be exposed to Jest and Laughter , and that they furnish others with Matter of Raillery and Merriment at his Cost , he resolves to correct the same for the future , and so to prevent the like Errours , that he may no more become a Laughing-stock to others . V. Envy is troubled at the Exaltation of the Wicked and Unworthy . Envy , forasmuch as it is a Passion and a Species of Sorrow , is not without its usefulness , it being that Affection whereby a man is displeased at the Prosperity or Elevation of another , because he is unworthy of it . For it seems but reasonable , to be moved with Envy and Indignation against those , who without their Merit are raised to ample Fortunes and high Employs . For whatsoever is conferr'd upon Unworthy persons , is look'd upon as a piece of Injustice , when that which should be the Reward of Vertue , is made an Encouragement to Vice and Wickedness . From all which it is apparent , that this Affection is distinct from that Envy which is a Vice , because this latter hath not for its Object a Person unworthy of the Good he enjoys , but rather conceives a Joy and Gladness from the Miseries of the Good and Vertuous ; whereas the former is only offended at the Prosperity of such as are Unworthy , but reaps no pleasure at all from the Misfortunes of those that are Good and Vertuous . The Good things for which we commonly Envy others , are Riches , Honours , and other such like , depending on the Gift of Fortune : For no Body is Envied for his Vertue , nor for his Nobility , Beauty , or other Endowments or Embellishments , whether of Body or Mind ; forasmuch as they do not depend of his Industry , but were bestowed upon him by Heaven , before ever he was capable of committing any Evil. VI. Compassion relieves such as are in Misery . Compassion , or Pity , on the contrary , provokes us to assist and relieve such as are in Misery , and to shew Kindness to those whom we suppose to be Unhappy , without any of their desert or merit . For it is not a Vice of the Soul ( as some Philosophers have supposed ) to pity the Miseries of others ; but rather a kind of Pious Sorrow and Blessed Misery : Because this Affection doth not only move the Mind conformably to anothers Calamity , but also strongly excites it , to endeavour the easing and removing of it . For it is a Duty we owe to Nature and Humanity , to condole with those that are Afflicted , and to endeavour to lend a Helping-hand to those that are opprest with Calamities , and who without Speaking , strongly cry to us for help . It is no Relief to a miserable Wretch , that we are touch'd with Grief and Compassion at the sight of his Affliction , except also we do help and assist him to the utmost of our Power . VII . Satisfaction , or Content , produceth Peace of Conscienc● . Satisfaction , or Content and Acquicscence in ones self , doth greatly conduce to Security and Peace of Conscience , when we call to mind any good Action that hath been performed by us . For as , according to HOMERS Fiction , the Herb Nepenthe added to their Cups , banisht all Sorrow and Sadness from the Banquet of the Gods ; so a Good Mind secur'd and guarded by the Rectitude and Uprightness of its Conscience , extirpates all solicitous Anxiety , and begets the highest Joy and Pleasure . For the Soul that is always accompanied by Innocenoe , seems , as it were , to applaud it self , and to be rais'd above this Earth , being Conscious to its self of no Crimes , nor distracted by the Guilt of Sin. Hence it is , that those who are safe and secure by reason of the Purity of their Conscience , are always of an even Temper , and tho' in the presence of a Tormentor , that stands ready to Torture them ; of Fire , that is ready to consume them ; and of a Funeral Pomp , to appall and terrifie them , continue unmoveable , fixed on the Rock of a good Conscience , being unconcerned at the raging Waves and Winds that roar about them . VIII . Repentance is necessary for the Effacing of Sin. But Repentance , which supposeth Guilt , and which torments the Guilty with the Checks and Stings of Conscience , puts them upon bewailing of what is past , and to get rid of the Burthen that presseth them . For as nothing is more pleasant and joyful , than a good Conscience ; so nothing is more tormenting than a Bad one : No Wild Beast tears and rends more Cruelly , no Flame burns more smartly , or Torments the Body more excessively , than a Guilty Conscience racks and tears the Soul , whose Inmate it is . Whosoever Sins , hath his Punishment immediately attending him , and his Crimes make him sufficiently miserable , without the Ceremony of a publick Condemnation . Punishment is the individual Companion of Wickedness , and never to this day was there any Man found that sin'd on free cost . Repentance therefore makes a Man after the Commission of Sin to hate himself , and from a serious abhorrence of his Crimes , to amend what is amiss , and enter upon a new course of Life . IX . Favour makes us to Love the followers of Vertue . Favour , which makes us wish well to those that are Vertuous and do worthy Actions , is a great incentive to the Love of Vertue , because it inclines us to Love the same in others , and to bear good will to all the followers of it : Whereas on the contrary we do hate perverse Men ; and tho' we do not abhor their persons , yet we do always abhor their Vices . It is inborn , and natural almost to all Men , to be angry with , and have indignation against Evil doers , and those who tho' they be never so criminal do go unpunished . But yet we are to take heed , that we do not imitate those Peevish and Morose persons , who are moved at things of little or no moment , and confounding slight fooleries , with the highest Crimes do abhor , the one as much as the other . It is the property of a Morose temper , to inveigh bitterly against small Faults , and to condemn all things that are not suited to his Temper and Apprehension . X. Gratitude prompts us to the rendring of Benefits . Gratitude , which preserves the pleasing memory of Benefits received , incites us to the endeavour of repaying them with like good Offices : Which may be done by us 2 manner of ways ; the first when by Gifts , or otherwise , we acknowledge the Favour or Benefit we have received . Thus we read , that AUGUSTUS CAESAR rewarded the good Office done to him by a Veteran Souldier , in rescuing him from imminent danger , at the Battle of Actium . For when he being accused at Law , and in danger of being condemned had desired AUGUSTUS to appear for him , CAESAR would not suffer his Attorny to plead for him , but himself appeared , and pleaded , that he might not seem ungrateful to him , who had saved his Life . The other way of shewing our selves Thankful is , when we receive a Benefit with a grateful Mind , and are ready at all times to acknowledge it . For indeed the returning of a good deed , does not so much consist in our recompensing it by good Offices , as in a grateful temper of Mind , whereby we are ready to acknowledge the favour bestowed upon us . For a Debt may soon be paid , and what hath been Stolen restored ; but he properly repays a Benefit , who keeps it always in grateful Memory , and owns himself under Obligation for it . XI . Anger is of use to Princes and Magistrates Anger , which the Stoicks do so much inveigh against , calling it a short Fury or Madness , hath also its use , as long as it continues within the Bounds of Reason , and does only moderately move and affect the Soul ; for being thus qualified , it is serviceable to Kings and Judges , to the removing of Lenity and Fear , which may oppose themselves to the Strictness and Severity of the Law , and incline them to over much Clemency . Thus it is lawful for Judges to be exasperated against the Crimes of Malefactors , who violate the Laws , and infect others by their wicked Examples . It is also serviceable to Kings in Governing of the Commonwealth ; for it is necessary for Kings , to avenge the Injuries and Indignities offer'd to themseves , and to be as ready to punish Traitors , as to resist and oppose their Enemies . For who will say , but that it is a just anger in Princes , which engageth them to inflict the worst of Punishments upon Traitors , who are guilty of the worst of Crimes ? XII . Glory and Shame of what use they are , and to whom . Glory and Shame are of extraordinary use , and advantage to those who are taken with the desire of Vertue ; for these 2 Passions naturally lead to her , and tho' they go different ways , yet tend to the same end . For Glory is as it were a Spur , egging us on to great and generous Actions , and to the undertaking of the most hazardous Exploits . It was under the conduct and command of this Affection , that the Romans procured their Greatness , and subdued all their Neighbouring Nations . It cannot be denied but that the Love of their Country , was a great and strong motive in the accomplishing of those brave Actions , but yet their desire of Glory , was a much stronger incentive to them . For indeed Vertues Vigor and Force seems to languish and expire , when it is not kindled with the desire of Praise and Honour ; and the whole strength and Briskness of the Soul is very rarely exerted , but in the midst of Spectators , that are ready to applaud and extol it . XIII . Shame keeps a man from the Commission of Sin. And Shame on the other hand deterrs a Man from Vice , and makes those things odious , which otherwise would appear delightful . This Passion may well be called the Guardian of Vertue , because it makes us to flee from the Face of every shameful and filthy Act. This keeps Judges to their Duty , and compells them to do Justice , for fear of making themselves infamous . This Passion furnisheth Women with Arms , wherewith to defend themselves against the attempts of Lewd and Lustful Men. And therefore SYNESIUS calls Shamefac'dness the second Good of Man , because it keeps them innocent , and doth not only hinder them from committing Wickedness in publick , but also in private . XIV . Chearfulness assists us in the bearing of Adversity . Chearfulness teacheth us to bear Afflictions and Adversity with a pleasant Mind , and to undervalue and despise the Calamities we lye under . It informs us that it is Prudence , to despise the Evils and Calamities of this World , and to rejoyce in the midst of those troubles , wherewith we are continually tost in this Life . For as Gold shines bright in the Fire , and by all the violence thereof loseth nothing of its weight or Splendor , so a Chearful Mind is of proof against the Injuries of Fortune , and turns its Calamities and Afflictions into Pleasure : It considers that nothing is more sweet , than the remembrance of past Labours and Miseries , and that that prosperity is sweetest , for which we have been prepared by the Bitterness of Suffering . CHAP. XVIII . Of the Government of the Passions , and of their more general Remedies . I. The particular Remedies of all the Passions are not to be here expected . FOrasmuch as the Happiness of Mans Life , depends on the right governing of the Passions , and that they may be accounted truly happy in this World , that have attained to a full Dominion over them ; we are to consider , how their Excesses may be best avoided , and the ill use of them prevented . Not that I do intend here to prosecute the particular Remedies of all the Passions , which Reason prescribes for the subduing or moderating of them , because that would be a greater Task than I can here undertake , in this short Discourse of Ethicks ; but only to set down the more general Remedies , to repress their force , and to over come their Excesses . II. We are to examine things before that we give way to any Passion about them . And here the First thing we meet with is , that we cautiously and diligently enquire into the nature of the thing that is presented to us , and that we abstain from passing a Judgment concerning it , as long as we find our selves moved by any Passion , so as to be byas● thereby to one Object more than towards another . For since all the Inclinations that proceed from them , are only the effect of a confused Perception , they cannot offer any thing , that is clear or distinct to our Mind : And therefore we must endeavour , if the time permit , to turn our Thoughts to some other Matters , for a Season , until the Commotion of our Blood be over . III. Whilst a Passion presseth upon ●s , the contrary reasons are to be noted . I said , if the time permits , because when the Passion is violent , and the case requires , that without any delay , a present Res●lution be taken ; the Will must consider and weigh the Reasons , that oppose the said Passion , tho' it may be they appear inconsiderable and of small moment to us . For we are to lay this down for a certain truth , That the Passions are deceitful , and that their main drift is to impose upon us , and lead us into Errors . And tho' it may seem to be a very difficult thing , after that a Passion hath made its onset upon us , and put our Blood into a Commotion , to put a stop to the Course of the Animal Spirits into the Muscles , in order to execute the command of our Passions ; yet is it not a thing impossible , but may be performed , by diverting our Mind from the thoughts it is upon , by representing to it the contrary Reasons . Thus when an Enemy sets upon us at unawares , such a suddain event affords us no time to deliberate : Wherefore in this case , if we find our selves seized with Fear , our business must be to turn our thoughts from the consideration of the danger we are in , by listning to those Reasons that tell us , that there is both more Safety and Honour in resisting an Adversary , than in giving way to him , or turning our back upon him . And on the contrary , when Anger seizeth us , and that we find our selves provoked to Revenge , and rashly to rush upon our Enemy , we must call to Mind , that it is a piece of great Imprudence to cast our selves away , when as we may preserve our Lives without Shame or Infamy , and that it is no Shame for a Man to recant , or to submit himself where the match is unequal , rather than to rush on rashly upon apparent Death . IV. We must examin the nature of things whilst we are Tranquil and Sedate . It is also very conducive to the governing of our Passions , to accustom our selves , whilst we are in a sedate and tranquil temper of Mind , to weigh and examin all the Good and Evil things , that any way may happen throughout our whole course of Life , and to discuss their nature and value , that afterwards upon occasion , we may be able with more readiness to form true Judgments concerning them , and certainly and without any hesitation discern , what ought to be avoided , and what to be embraced by us , whatsoever any rising Passion or Supervening reasons , may insinuate or suggest to the contrary . For if we direct and govern all the Actions of our Life , according to some certain and premeditated Judgments , it will not be difficult for us to repress the Violence of our Boyling Passions , and to break the force of them . For how weak soever we may be , and how easy soever to be overcome by our Passions ; yet if we do but apply our selves to such thoughts as these , and often revolve them in our Minds , we shall at last come off Conquerors , and attain to an absolute Dominion over our Passions . V. He that can overcome desire will soon get the Dominion over all the rest of his Passions . It will be of great use also towards the taming of our Passions , to curb our Desires , and not suffer them to Rove beyond the requiring of Nature . For tho' Desire be a peculiar Passion , yet it mingles some way or other with them all , so that he who can tame its unruliness , will easily cure the Distempers of all the rest . For all the motions of Desire as they are Solitary , and by themselves , are dark and languishing , except they receive light from abroad , and chiefly from the Goodness and Excellence of the Object , about which they are conversant . And forasmuch as some of the things that are desired by us , do altogether depend upon our selves , and some upon others , and some also partly upon our selves , and partly upon others , we ought very narrowly to examine , how we ought to carry our selves with relation to these several things , and what curbs are best to be made use of to restrain the great variety of our desire . VI. How far we may desire the things that are in our Powers . As to those things which are in our Power , these may lawfully be desired by us , as long as our desires of them are well grounded , and proceed from Good and Vertuous motives ; for seeing that they proceed from a perception of Good , and only tend to our Complement and Perfection , to endeavour the satisfaction of them , is to act conformably to Nature , and to follow the Dictates of Vertue . But who dares say , that any one can with too great eagerness pursue Vertue ? VII . We must not desire any thing that is in the Power of another . But as to things that are forein to us , and in the Power , and at the disposal of others , our desires towards them can never be faint and weak enough : Yea we must strive , as far as lies in us , altogether to abstain from the prosecution of them , having our Mind fix'd on the Contemplation of the Great GOD , by whose Providence all things are governed and dispensed , and whose Boundless Goodness , Infinite Wisdom , and Infallible Decrees are only worthy of our continual Thoughts and Attention . Wherefore we must consider , that all whatsoever happens to us is necessary , excepting only those things , which it hath pleased GOD , should alone depend upon our Wills , and which by his Decree he hath ordain'd , should by such and such ways be conveighed to us . And being thus persuaded , as we shall not desire the Goods of Fortune , so neither shall we fear its Evils , forasmuch as they are only such , by reason of our Opinion of them , and the Error of our Understanding ; but shall rather willingly submit to them , as being designed for us by his unerring Providence , and infallible in their Contingency . And accordingly giving way to Time and Chance , we shall undauntedly expect whatsoever may happen to us , as being undoubtedly assured , that they cannot deprive us of the least part of any true Good we are in possession of ; yea , moreover that they are very conducive to our Beatitude , if we know how to make use of them as we ought , and as becomes a Philosopher . VIII . We are to moderate our desires about those things which partly depend on us , and partly on others . And as to those things which partly are in our Power , and partly at the dispose of others , such as Health , the Government of our Families and Administration of State Affairs , we must take care that we do not too eagerly desire the same , or be too earnestly carried out towards them , when they seem to be in our reach ; but that we remember always so to curb our desires , that we only extend them to those things that are in our Power , and depend on our Free-will : So that if our endeavours chance to succeed , we shall obtain the thing we desire ; but if not , at least we shall have the comfort that we have performed our Duty , and done what was in our Power ; and therefore shall look upon them as Impossible , and since the obtaining of them is not in our Power , we shall suppose them not at all to belong to us . IX . Generosity is a great Remedy of the Passions Generosity may be considered as another general Remedy of our Passions , which being as it were the Key to all Vertue , so it is a powerful means to subdue and moderate our Affections . Now Generosity consists in this , that a Man do value and esteem himself to the utmost of his worth ; for having this respect and consideration for himself , it will engage him not to omit any thing he ought to do , as well as from undertaking any thing unworthy the excellence and Dignity of his Nature . For considering that nothing properly belongs to him , besides the free disposal of his Will and Choice ; and that nothing is praise-worthy or commendaable in this Life , save only the due use thereof , he will suppose himself to have attained the highest step of Felicity , if he find in himself a fixt and constant Resolution and purpose to make good use of them ; that is never to want a Will , to undertake or execute all those things , which he judgeth to be best , which in a strict and proper Sense is to follow Vertue . For tho' he hath this due esteem of himself , he does not therefore despise others , but rather persuades himself , that all other Men have the same Thoughts of themselves : And therefore he never undervalues other Men , and if by chance he discover any defects or weakness in them , he is more ready to excuse than carp at them , and to persuade himself , that they commit those Failings , not for want of a good Will , but for lack of knowledge , and due Information . X. The highest remedy against our Passions is the Love GOD. But the most powerful Antidote against our Affections , is the Love of GOD , which natural knowledge implants in our Souls . For this being the most pleasant and delightful of all the Passions , we can be affected with in this Life , and the most strong and prevalent also , it must consequently have the Power of ridding us from the Dominion of all other Passions , and not only of curing all the Vices of the Mind , but also of removing all the bitterness of Bodily Sickness , and of sweetning all the Troubles and Afflictions of this Life , which are the inseparable Companions of all States and Conditions whatsoever . And how this Divine Love may be obtained by us , DES CARTES informs us in the 35 Epistle of his first Volume , to which I refer the Reader . CHAP. XIX . Of the Liberty of Mans Will. I. How those who deny the free-will of Man may be convinced . AFfter having spoken of the Vertues , and shewed the use of the Passions we might ●eem to have performed little or nothing towards a Blessed Life , if we should not now proceed to demonstrate , that Man is endued with a Free-will , and that it is in his Power to exercise Vertue , and make good use of his Affections . For there be some , that are so ignorant of themselves , and such negligent searchers into the source of their own Actions , that they attribute all things to a Blind Necessity or Fatality , and suppose Men to act from an imprest instinct , and that nothing is done by them which is not necessarily determined . But these Men do very well deserve to be tied to a Stake , and there lasht so long , till they beg those that beat them to stop their Hands , and confess that it is in their Power , to cease from beating of them , when they please . II. Human Actions shew that there is a Liberty of acting For what is more contrary to daily experience than to believe , that it is not in our Power to Speak or hold our Peace , to stand still , or to walk , to reach forth our hand to a poor Beggar , or to pass him by unregarded ? This is so notoriously manifest , that as St. AUSTIN saith , it is Sung by Shepherds on the Mountains ; by Poets on Theaters , by Balladmongers in their Rings , by the Masters in Schools , and by all Mankind in the World. For if Men have no Free-will , to what purpose are Laws made ? Why are Rewards promised to those that are Good , and Punishments threatned to the Bad , if the things for which they are rewarded or punished , were never in their Power , and that they sinned against their Will , or by the force of necessity performed some good service to their Country ? Why are Exhortations used ? Or why do we endeavour to excite men to Vertue , if we have no Strength of our own so to obtain it ? And if like Children and Madmen , we want the power of chusing or refusing ? III. He that takes away mans Liberty of Will takes away Sin. Moreover , if we do all things by a kind of fatal necessity , what will become of Prevarication and Sin ? Or where shall we find any Transgression of the Law , if uncontrolable force be the source of our Actions , and if they be the result of Nature , and not of our Will ? Necessity , say the Lawyers , makes void an Action , and he that Governs , must not be in the Power of any one . It is evident therefore that Men are free , and so far at their own dispose , that when Good and Evil are set before them , they may choose that which is Good , if it be represented to them under that Notion ; or Evil , yet always under the appearance of something that is Good , if the said appearance do more strike their Understanding and attract their Will : Or when two good things are propounded together , they can chuse the one and leave the other , if it appear more suitable to them , and more excellent and worthy in it self . IV. If there be no Liberty of the Will , all Deliberation is in vain . But what need is there of so many words to make out a thing that is so Notorious and obvious almost in all Human Actions ? There is nothing more common amongst men , than to deliberate and take Counsel in doubtful Affairs ; not only the Common People , but even Kings themselves have recourse to this Expedient . For seeing that every one is more dull-sighted in his own business and concerns , than in those of another , Princes must make use of Counsellors , that may be unto them instead of Hands and Eyes , and may help them in all things . But pray , to what purpose are these Counsellors , if it be not in the Power of the King to take their Advice , or to change his Purpose ? Nature hath made us Teachable Creatures , and bestowed upon us an Imperfect kind of Reason , which can be amended and perfected by good Institutions . And accordingly there is nothing that more strongly induceth men to love Vertue , and recalls wicked Men to that which is Right , than the Conversation of good Men , by whose Example Vertue is recommended and learn'd , and by degrees takes root in the Heart . But alas ! how useless would it prove to Converse with good Men , if it be not in our Power to imitate their Actions ; and if for want of this Free-will , we cannot follow that which is Best ? We must therefore be possest of a Free-will before any of these things can be advantagious to us ; and as it is in our Power to recall our Eyes or Mind from any Object , so it is likewise in our Freedom to withdraw our Affections ; except we will confess , that Knowledge was given us to no purpose at all , and that it is of no use to the governing or directing of our Actions . V. He that takes away the Freedom of Man's Will , banisheth Vertue out of the World. Human Society cannot subsist without Vertue , which being taken away , the Beautiful Order of the VVorld must be overthrown , Government must degenerate into Tyranny , and all the Concerns of Mankind be expos'd to the tumultuous Motions of the Passions . Wherefore it is necessary , that Vertue be seated like a Judge over all , and to render to every one his due ; to GOD , by Religion ; to our Country and Parents , by Love and Obedience ; to our Fellow Citizens , by various Offices of Justice and Charity . But take away the Liberty of our Actions , and all these things vanish , and there remains nothing in the VVorld , but confusion and corruption of Manners . For how shall Temperance be able to contain her self , and suppress all inordinate Desires ? What shall put Fortitude upon difficult and dangerous Exploits ? By what means shall Justice pay what is due to another , and observe the Rules of Equity ? If so be it is not in their power to abstain from Pleasures and Lusts , to avoid things difficult and dangerous , or to keep what is anothers by force . We must therefore of necessity conclude , that the Power of Free-will hath been vouchsafed to man by GOD , and that in all his Actions he is not driven by Necessity , but led on by his own VVill. For otherwise , why might not all the Failures and Sins of Nature and Men , be imputed to GOD , if he be the only Agent in the VVorld ? Or , why might not he be said to commit all Evils and Crimes that abound therein ? It was therefore necessary , that Man should be endued with Liberty , to the end that his own Actions might be recompensed unto him , and he receive the Reward or Punishment due to his VVorks . VI. The Free-will of Man depends upon GOD. But tho' every one doth experience this power of choosing in himself , and find that his Will in its determinations , doth not depend upon any created Agent ; yet neither must it be conceived to be utterly independent ; for tho' Free Will , as DESCARTES saith , if we give heed only to our selves , cannot but be conceived as Independent ; yet if we consider the infinite Power of GOD , we must of necessity believe , that all things depend on him , and that consequently our Free Will cannot be exempt from his Dominion . For it implies a contradiction to say , that GOD hath created Men of such a Nature , that the actions of their Wills are independent of his Will ; because this is the same , as if we should say , that his Power is both finite and infinite . Finite , because there is something that does not depend on his Will ; and Infinite , in that he could make that thing independent . VII . The Liberty of our Will , doth not make the Existence of GOD , doubtful . But as the Knowledge of the Divine Existence must not take away the certainty of our Free Will , so must neither the Knowledge of our Free Will , make the Existence of GOD doubtful to us . For the Independence which we experience , and are sensible of in our selves , and which is sufficient to make our Actions worthy of Praise or Reproach , is not repugnant to a dependence of another kind , according to which all things are subject to GOD. VIII . An Objection answer'd . If any one should object here that Passage of the Romans , The Good that I will , I do not ; but the Evil I will , that I do ; and should from thence infer , that he who does not what he Wills , and does what he Wills not , cannot be said to be free . I Answer , that this saying of the Apostle is to be understood of the first motions of Concupiscence , which are not in our Power , neither are imputed to us as Sin ; and therefore the Apostle subjoins , Now if I do that which I would not , it is no more I that do it , but Sin that dwelleth in me ; which , since it took its birth from the first Sin of Man , and that it is the Cause , and as it were , the Mother of all the Sins we fall into , is therefore by the Apostle called Sin. Wherefore also the Apostle afterwards adds ; O wretched man that I am , who shall deliver me from the Body of this Death , that is , from the hard Yoke of Concupiscence ; and presently after answers his own Question , the Grace of God through Jesus Christ . CHAP. XX. How , presupposing Gods Omnipotence , Men can abide Free in their Wills ; and whether the Free Will of Man can be hindered . I. An Objection against the foregoing Chapter . FROM what hath been said in the foregoing Chapter , no small difficulty seems to arise , which must not be omitted by us . If it be true , will some say , that all things are subject to the Divine Power , and consequently , that all the works of our Will do depend on him , how then shall we be able to secure Human Liberty , when all things that proceed from us are ordained by him , and cannot happen without his Praescience . II. God is said to be a total Cause two several ways . We shall resolve this Difficulty by saying , that GOD indeed is the Total and Universal Cause of all things , so that nothing can be done by any of his Creatures that doth not depend on him : yet is not this Causality of his exerted in all after one and the same manner . For in the Production of those things , to which neither our Free Will , nor that of any other Created Agent doth concur , we must say that GOD only had regard to his own VVill , according to which he absolutely determined to produce them after such a certain manner , and such a determinate time . But as to those things which the VVill of Man hath some power over , he did not singly regard his own VVill ; but had regard also in his Decree to the consent of our VVill ; and would have nothing absolutely to come to pass , without the presupposing of our Determination . For it doth not follow , that because the certain order of all Causes is manifest to GOD , that therefore nothing is left in the power of our Free VVill , seeing that he himself could not be ignorant of our VVillings ; which he foreknew were the Principles of our Actions . III. How God acts in Concurrence with our Liberty . DESCARTES illustrates this by the Example of a King in an Epistle of his to Elizabeth , the Princess Palatine . Suppose we a King to have forbidden all Duels , and that he certainly knew that 2 of his Nobles , the inhabitants of 2 different Cities , had a quarrel together , and to be so incenst against each other , that in case they should chance to meet , they would certainly fight one another ; if I say this King should command one of them to take a Journey towards that City , where the other dwells ; and at the same time give the other a command to go towards that place where the former is supposed to inhabit , he certainly knows that they cannot but meet one another , and consequently fight and break his Command or Proclamation ; but yet for all this he doth not force them to it ; neither doth his Knowledge , no nor his VVill neither of thus determining them to this Action , any way hinder them from fighting as freely , as they would have fought , if he had known nothing of all these particulars , or if by any other occasion they had chanc'd to meet with one another ; and therefore he may with as much justice punish them for violating his Edict . IV. Gods knowledge and will do not destroy mans Liberty . Now what is lawful for a King to do , with respect to some of the Free Actions of his Subjects , the same GOD , whose Knowledge and Power is infinite , doth , with regard to all the actions of men . For before ever he sent us into this VVorld , he exactly knew how all the Propensions of our VVills would be , because he himself put them into us ; and also disposed all things without us in such a manner , that these and the other Objects , should present themselves to our Senses , this or that time , by occasion whereof he knew that our Free VVill would determin us to this or the other thing . And this he would have to be so ; but yet he would not force us to this . And as in the foresaid King , 2 different degrees of Will may be determined ; the one whereby he would that these 2 Nobles should fight together , in as much as he was the cause of their meeting together ; and another whereby he would it not , or was against it , in that he had forbid Duelling by his Proclamation : in like manner our Divines distinguish 2 VVills in GOD , the one Absolute and Independent , whereby he will have all things to come to pass as they do ; the other Relative , which respects mans merit , or Guilt , by which he will have his Laws obeyed . V. There be 3 things that hinder the use our Free Will. Three things are commonly reckoned up by Heathen Philosophers , which may hinder the use of our Free VVill , viz. Fear , Ignorance and Force . Fear seems to be an Impediment or Bar to Liberty , when it is not the fear of a vain man , as the Lawyers speak , but such as is grounded , and may light upon a constant and well resolved person , because it makes him do those things which he would never do , if he were left to himself , and were not shaken with fear . VI. Mans Liberty may consist with Fear . But I do not at all approve of this Opinion , forasmuch as Fear , whether it be great or small , doth not so oppose Liberty as that it should wholly destroy it : Yea , if we heedfully mind the matter , we shall find that it is always in conjunction with a kind of VVillingness , whereby it willingly performs that which Fear seems to extort from it . For 2 things are considered in Free VVill ; First , That we do it spontaneously , or of our selves : And Secondly , That we do it freely . The former of these Modes of Acting seems in some sort to be hindred by Fear ; because we do that , which we would not , if we were not forced to it by the Fear of some impending Evil. But the latter is not at all hindred by it , because the nature of Free VVill doth not consist in Indifferency , seeing that we do nothing so voluntarily and freely , as we do those things to which we are determined by an urgent Cause . As we see it happens to us when we are egg'd on by Fear ; for though the Object then be displeasing to us , and that we would rather , if we might , choose the contrary ; yet because of the impending Evil or Punishment we do greedily embrace it , and choose a lesser Evil before a greater . And therefore Lawyers are of opinion , that all Contracts are not made void by Fear , except they be accompanied with Injustice as appears Instit . de Except . in Initio . Ex L. Mulier , § . finali quod metus causa . Ex L. ultima C. de iis quae vi , and innumerable other places . VII . Of the twofold Ignorance Vincible and Invincible . As concerning Ignorance , we shall the better be able to determine , how it may be said to hinder the use of our Free VVill , by supposing a twofold Ignorance , Vincible and Invincible . Vincible Ignorance is that , which by the use of moral and due Diligence may easily be overcome . Now a due Diligence is that which ariseth from Vertue , or the Love of Reason , and not from any other ground or motive . As by Example , a Merchant having an usual Contract or Bargain offer'd him , doth not examin it , only seeing that he is like to gain by it , embraceth it , without any more ado , or concerning himself any further about it : and forasmuch as he hath not examined it , he doth not know it to be unjust . Now this Ignorance of the Merchant in Vincible , and doth not consist with Vertue ; for if he had loved Reason above all things , he would have diligently examined the said Contract , and having found it to be offensive to Reason , he ought never to have consented to it , how gainful soever it might appear to be otherwise . But Invincible Ignorance is when a man cannot know that he is ignorant of , in the circumstances wherein he is for that time . As for Example , suppose we that SEJUS hath writ to his Friend CAJUS to assist him in such a Business , and that the Letter chance to miscarry , and never come to his Hands ; in this case CAJUS will be under an Invincible Ignorance , tho' he hath used no diligence to the removing of it . VIII . How or in what case Ignorance doth excuse a Transgressor . Ignorance , with respect to a Free Act is found to be threefold . 1. Antecedent , which is before any consent of the VVill , and this without doubt is invincible , neither can any blame be imputed to it : As if a man that is a Hunting should kill a Man , taking him to be a Beast ; because 't is supposed that he never intended any such thing . The other is Concomitant , which exists together with the Act , and doth accompany it , insomuch that it is the Principle of that Action ; and the Action would have follow'd , tho' the said Concomitant Ignorance had not been : As if a man supposing himself to kill a Beast , should ignorantly kill his Rival , whom he hates from his Heart ; and whom , if that Ignorance had not been , he would have kill'd notwithstanding . The Third sort of Ignorance , is Consequent ; so called , because it follows the Consent of the Will , and therefore Voluntary , and therfore is somewhat of the same Nature as Invincible Ignorance : As when a man forbears going to Church , because by Neglect he never minds or enquires about the Time when he is to go . From these things thus briefly stated , it is apparent , that it is only Invincible Antecedent Ignorance that can make an Action Involuntary , since whatsoever follows from it was altogether unknown . For nothing is desir'd of Man , which is not first known by him : For the Understanding is like a Servant , that carries a Torch before his Mistress , the Will. IX . Ignorance of the Law of Nature cannot be Invincible . But here we are to observe , that there can be no Invincible Ignorance of the Law of Nature , which by Natural Instinct is known to all ; and therefore whosoever he be that transgresseth the same , can never be blameless . Whence is that Common Saying of the Philosophers , Ignorance of the Law excuseth no man : But that the Ignorance of Positive Law , whether Human , Ecclesiastical , or Divine , may render an Action Involuntary . X. The Elicit Acts of the Will cannot be forced . It remains next to be explained , whether there can be any Force or Violence that is capable of making the Actions of our Will Involuntary . To the better solving whereof , we are to suppose that Human Actions are twofold , Elicit and Imperate : Those are called Elicit Actions , which are immediately produced by the Mind , as from their Principle ; such as are the Acts of Nilling and Willing . Others are Imperate , which proceed from another Faculty than the Will , tho' not without the Command of the Will , as sensible Perceptions , the motions of the outward Members . As to the first of these , it is evident that the Will cannot suffer any Violence , or that the Elicit Acts of the Will should be forced ; for seeing that they proceed from the Will , as from their Active Cause , they cannot be subject to any Violence that proceeds from an Outward Principle , as ARISTOTLE saith , which can add no Force to the Action , since it is evident that the Will is an Active Principle , and adds or contributes to its own Acts. XI . But Imperate Acts may . But as for the Imperate Acts of the VVill , they may be said to be Involuntary ; for tho' they depend on the Command of the VVill , and follow its Inclination , yet the Faculties , especially the outward Members , may be so hindred by the Force of an External Agent , that they cannot execute the Command of the VVill ; and accordingly we frequently find some motions produc'd in our Bodies , contrary to our VVills . CHAP. XXI . Of Human Acts , and of the Goodness and Pravity of them . I. What an Human Action properly is , and what Principles concur to it . BY the Name of Human Act , every Action is not be understood that proceeds from Man , but that alone which is the effect of a Free Principle of Acting , or which is caused by the Understanding and VVill. So that that is only to be accounted as an Human Action , whereof a Man is the Absolute Lord or Disposer , or which he hath in his free Power . II. Two things are requir'd to a Human Action . There be 2 Principles that concur to every Human Action , viz. Understanding and VVill. The Understanding that shews the Way , and , as it were , carries a Light before his Mistress . For tho' the Will be an Elective Faculty , by which the Mind freely determines it self to doing , or not doing ; yet it is first required , that the Understanding do before represent or propose the thing to her . For as nothing in general can be willed , except it be known ; so nothing can be freely Will'd , except it be fore-known by the Understanding . Wherefore every Errour that befalls our Actions , is chiefly caused from the wrong Perception of the Intellect : For if she never did exhibit ought to the Mind , but what was clear and evident , neither would the VVill ever mistake in her Choice . III. Of the Twofold Goodness that is found in Human Actions . In every Human Action a twofold Goodness may be observed ; the one Natural , which some call Entitative , which is in all things , inasmuch as they are partakers of Nature and Entity . The other Moral , which is nothing else but the Conformity of a Human Action , with Right Reason . As on the contrary , the Moral Evil or Pravity of an Action , is its deformity or swerving from Right Reason , that is , when it wants any Perfection , which according to Right Reason it ought to have . By Right Reason , I understand here a true Judgment of every thing , free from the Paint or Fucus of any Opinions , whereby the Laws of GOD and Nature are understood , and every thing rightly and prudently discerned , according to the Prescript of the Law. Whence it appears , that many Actions which agree with regard to Nature , do extreamly differ with respect to Manners . As for Example , To kill a man , when it is done of a Man 's own Will and Authority , is not distinguishable from that Action , whereby a man is put to Death by Publick Authority ; but they vastly differ in a Moral respect , seeing it is lawful to Kill a man by Publick Authority , because of the Justice which is exercised in that act , whereby it comes under the Notion of Good ; whereas to Kill a man by the impulse and instigation of ones own Will , is unjust and prohibited by the Law of GOD ▪ IV. What makes any Action Morally Good. An Action therefore is accounted Morally Good , if it respect or have an Eye to Good , desired according to Right Reason . For Human Actions derive their Goodness from their Object , when it is supposed to be such as Right Reason prescribes and allows of : Forasmuch as an Action is not accounted Good , because the Understanding knows it , and the Will rightly desires it ; but rather because the Object of it is good and honest , therefore the Will that is carried towards it is Right . Wherefore Right Manners do not make the Object Good and Honest ; but on the contrary , a Good Object and agreeable to Reason , makes good Manners , and consequently Human Actions derive the formality of their Goodness or Pravity from it . And the same is to be said of Evil Actions , which owe their Evil to a shameful and dishonest Object ; and accordingly the more shameful the Object , the more wicked is the Action . And forasmuch as all Objects are not Equal , but some excel others in Pravity , so neither can it be said that all Sins are Equal , it being certain that some far exceed others in Evil. V. The Goodness or Pravity of Actions depends on certain Circumstances . Neither doth the Good or Evil of Human Actions , solely depend upon the Object , but also on certain Circumstances ; which are so called , because they always accompany , and as it were , guard and encompass our Actions , especially those that are outward , and are , as it were , so many Accidents observable in them . Of these there are commonly reckon'd up Seven , which are contained in these Verses . Who , what , where , by what means ; why , how and when , These make or Good or Bad all Acts of Men. VI. Who. Who , denotes the Person and Quality of the Agent ; as whether , he who hath committed a Rape be a King or a Subject , a Citizen or a Stranger , a single or a married Man. VII . What. What , intimates the Quality of the Object , about which the Action is conversant , whether the party on whom the Rape hath been committed , be a Virgin dedicated to GOD , or one at her own dispose . VIII . Where . Where , shews the place where the Wickedness hath been committed , whether in the Church or in a Profane place . IX . By what means . By what means , points us to the Instruments or Companions a Man hath made use of in the committing of this Wickedness . As , whether he struck with a Sword , or with a Stick ; whether he had any to assist him , and whether they were Clergy-men or Laicks . X. Why. Why , makes out the Intention of the Agent ; as whether a Man set upon another meerly for gain , or to revenge an Injury . XI . How. How , holds forth the manner of the Action ; as whether a Man did hurt or wound another , being provoked by Wrath , or in ●his right Wits ; whether he assaulted him basely and treacherously or fairly and openly . XII . When. When , considers the Time when the Action was done , whether in the Night or in the Day time . XIII . Circumstances do often change the very kind of the Action . Which Circumstances are therefore said to concur to Human Actions , forasmuch as some of them do very signally increase the goodness or pravity of them , yea , and sometimes quite change the kind of them . As for Example , when that which is stolen is something dedicated to GOD , or his Worship ; this is not simply Theft , but Sacriledge , which differs in kind from Theft , as being suppos'd forbid by a Special Precept . And in such a case as this they lose the Nature of Circumstances , and take upon them the Nature of an Object , whence , as we said before , Human Actions derive their Pravity , and becomes worthy of Punishment . XIV . Of the Duties and Offices as well of Man in common , as of a good Christian in particular . Tho' the Duties of a Man and Citizen might seem to require a particular Place wherein to be treated of and so to constitute the Eleventh Part of this Institution ; yet forasmuch as they belong to Human Actions , and presuppose Free-will , I have thought fit to subjoyn them here ; and keeping my self within the Number of these Ten Parts , to Treat of them by way of Conclusion . For this Work might well seem to be deficient , if after having explained the Nature of Vertue , ( which according to the common Division we have distinguish'd into 4 Heads ) and having enenquir'd into the Nature of Human Actions , we should omit the Offices and Duties of Men , and not amply and distinctly Treat of these , which are the Consequents of his Liberty . Wherefore we shall now set down , what are the Duties of Man in General , and afterwards proceed to the Offices of a Good Citizen , and show what either of them ought to embrace as Good and Vertuous , and to reject as Shameful and Wicked , according to the Prescript of Nature ; which I shall endeavour to perform with all the Brevity possible , and as far as the Bounds of this Institution will permit . CHAP. XXII . Of the Rule of Human Actions . I. What things are to be foreknown in this matter . SInce to the end a Man may act aright , it is necessary that he be Conscious of his Actions , or , which is the same , that he assent to his own Reason in the Chusing or Avoiding what is propounded to him ; it will be of use to us to know what Conscience is , and by what Denominations it goes : As likewise what Obligation is , to whom it agrees ; and how it comes to pass , that Mankind is bound to observe some Institutions . II. What Conscience is . By the Word CONSCIENCE we here understand , that Testification or Witnessing to Good or Evil , which every one experienceth in his own Mind : Or , as some describe it , it is that Act of the Intellect whereby a Man judgeth , that a thing ought , or ought not to be done . And this Act or Conscience , is denoted by several Names , according to the Motives or Reasons , whereby it is egg'd on . III. A Right Conscience . It is called Right , when the Human Understanding is so well informed of things that are to be done or omitted , that it can give clear and distinct Reasons of its Perceptions , and such as cannot be doubted of or call'd in Question . Or , to express the same in fewer Words , which dictates that to be Good , which is Good ; and that to be Evil , which is really so . And such a Conscience as this , is but rarely found amongst men , there being but very few that know the Causes of things , and that are so happy as to be able to reduce them to their Principles . IV. A Probable Conscience . We call that a Probable Conscience , when tho' we do truly assent to the thing offer'd to us , and do think that the same ought to be embraced or declined ; yet we are not able to make out our Judgment by Reasons , but only derive the same either from the Authority of our Superiours , or received Custom , or the common tenour or course of a Civil Life . V. A Doubtful Conscience . A Conscience is said to be Doubtful , when it hangs , as it were , in equal poize or wavering , and doth not know which part to assent to : Which more especially is found in singular Cases ; where Reasons on both sides present themselves , and we cannot discern which are to be preferr'd . Now in such a case as this , we do well to suspend our Judgment without determining any thing till the Darkness of our Mind be dispell'd , and that it clearly appear to us , what is consonant to the Law before us , and what is contrary to it . VI. An Erroneous Conscience . Lastly , We call that an Erroneous Conscience , when our Understanding embraceth Evil , instead of Good , or declines Good instead of Evil. And this either through Vincible or Invincible Errour . Vincible Errour is that which we may avoid by a diligent and careful Examination of the Case . Invincible , is that , which we cannot avoid by any care or diligence that it is possible for us to take . But this last Ignorance happens only in particular Affairs , which depending of many Circumstances , it frequently comes to pass , that we are deceived about them , or about the Object it self , and so fall into Errour against our Wills. VII . What Obligation is . By the word Obligation , we are to understand nothing else , but that Tye of the Law , whereby we are of necessity compell'd to do something . For by it we do , as it were , gird up our Free-will , and tho' we very well know our selves to be free , and that we can chuse the contrary to what is propounded to us : Yet there is a kind of Coactive Power that sticks to our Minds , by means of the Obligation , which doth not suffer us to incline to it , and puts us in mind , that we shall sorely repent of it afterwards , in case we do not act according to the Prescript of the Law. VIII . Man alone , of all other Animals , is capable of Obligation . Amongst all Animals , Man only can be the Subject of Obligation : For Beasts being devoid of Reason , and destitute of the Faculties of the Will , can exert no free Actions ; and therefore it would be in vain , to prescribe any Form to their Actions , seeing they can neither understand it , nor adjust their Actions by it . Man only therefore is capable of Obligation , and of receiving a Rule prescrib'd by his Superiour to Live by . I say , by his Superiour ; for if a man were of such a Condition , as to be wholly at his own dispose , without being obnoxious to the Command of any , he could not be obliged to the performing of any thing by any Law ; and if in that state he should follow the dictates of Reason , and abstain from some things ; this would be imputable rather to his most Free-will , than to any Obligation lying upon him . IX . How a Superiour is to oblige those that are under his Command . Now to the end that this Obligation may be the more firmly imprest upon the Mind of man , besides the Authority of the Superiour , it is sometimes fitting that Just Causes should be produced by him , which induce him to put this Curb or Restraint upon the Liberty of his Subject . For he that only shews his Power , and will always have his Will to stand instead of Reason , may indeed strike Fear into a Man , and make him rather chuse to obey him , than to expose himself to danger : But when once this Fear is gone , and that the Superiour ceaseth to be frightful to him , he will soon return to his own Inclinations , and follow the Motions of his own Will , rather than those of another . But when the Reasons are discover'd , why he thinks fit to circumscribe the Liberty of his Subject ; and that he makes it out , that it is his Interest that such Laws should be Enacted ; yea , that many Advantages will thereby accrue to him , he will readily submit himself to them , and shew himself ready to obey his Princes Commands . X. The Rule of Human Actions . The Rule therefore which every man is to follow in his Actions , is the Law or Decree , whereby the Sovereign , in whom the Publick Power is lodg'd , binds up his Subjects , to order and regulate their Actions , according to his Prescript . Now that such a Law may be able to compel men , and exert its Force upon their Minds , it is necessary that the Legislator and his Laws should be known to them . For how will any one be able to pay Obedience to them , if they have no certain Knowledge , neither of the Person to whom they are to render it , nor to what they are obliged ? True it is , that the Laws of Nature are engraven on the Hearts of all men , and are so many Precepts that are common to all Nature , and that no Man in his Right Understanding can be ignorant of the Author of them : But Civil Laws are not alike Notorious , as depending upon the Free-will of Superiours , as being such to which only some peculiar People are obliged ; and therefore in order to their being of Force , they must be promulged and made known to all their Subjects . Which Promulgation is performed , either by the Voice of the Legislator himself , or by some of his Deputies , whose Authority is unquestionable ; or any other way , according to the various Customs of different Provinces and Kingdoms . XI . There are two things in every Law. Every Law , if it be perfect , contains 2 Parts : The one which determines what is to be done or omitted ; the other , which declares the Punishment to be inflicted upon those that neglect to perform what is prescribed , or commit what is forbid . For seeing that Human Nature is prone to Evil , and is apt to be carried with more vehemence to things that are forbid , it would be to little purpose for any man to declare what is to be done , if there were no Punishment to follow the Contemner of the said Command : And so in like manner , it would be altogether to no purpose to threaten any Punishment , if there were not cause specified before , for which the said Punishment is to be inflicted . XII . Laws are to be Enacted for the Publick Good. Notwithstanding that Laws seem to restrain the Liberty of the Subject , yet they are so to be ordered , as that whatsoever is prescribed , may appear to be profitable and advantagious to the Publick Good. For it would seem unjust to oblige Subjects to the Observance of any thing that is not advantageous thereunto . Forasmuch as Laws are like Remedies , which ought always to be conducive to the good State of the Body , because they are appointed for that end : And in like manner , there ought to be nothing in the Laws , which doth not contribute to the good of the Community , because it is for that Reason that they were Enacted . XIII . The Legislator may dispense with the observance of the Law. Tho' the Law be suppos'd a Common Precept , and a common Contract or Agreement ( as the Lawyers express it ) of the Commonwealth , according to the Prescript whereof those that live in the Commonwealth are to regulate themselves ; yet some Persons may be peculiarly exempted from the observance of it ; and this is exprest by the word Dispensing . The Power whereof belongs only to the Legislator , who as he hath the Power of Enacting Laws ; so he only hath the Power of Abrogating or Dispensing with them , that is , delivering any one from the obligation of them . But above all things , it is the Duty of the Sovereign never ordinarily , or without urgent Cause to free any of his Subjects from the obligation of the Law ; to avoid the Envy and Indignation this would be apt to cause amongst their Fellow Citizens . XIV . The Difference of Actions . From what hath been said , may be gather'd , that Human Actions , as they have a relation to the Prescript of Laws , do take to them several Qualities and Denominations . For those which the Laws pass by , without determining any thing concerning them , are called Permitted or Lawful , as long as they are not contrary to the Law of Nature , or the Reason that is in man. The Actions that are conform to the Laws , and follow the Rules prescribed by it , are called Good ; and those Evil , which are contrary to it . XV. When Actions are said to be Good. Now to the Goodness of an Action , it is requisit not only that it agree with the Law in some part , but that it be in all things conform to it : Whereas it is sufficient to the Pravity of an Action , if it be deficient in some one part only , and does not in all respect , agree with the Law. XVI . The Divine and Human Law. The Law , as it is a Regulation of Reason , shewing Man what he ought to do , and what not is twofold , Divine and Human. That is called the Divine Law , which is instituted immediately by GOD himself . And therefore ARISTOTLE saith , in his Third Book of Politicks , He who commands the Law to bear Rule , commands that GOD should bear Rule . Human Law is that which is Enacted by men , and is different according to the different Form of the Government Politick . Of which I have treated more at large in the Chapter of the Law of Nature . CHAP. XXIII . Of the Duty of Man towards GOD. I. Of the three general Duties , or Offices of Man. THe Action , which according to the Nature of the Obligation that lies upon us , we are to regulate according to the Praescript of the Laws , is divided into 3 Chief Parts , according to the several Object● it respects . The first whereof shews , how according to the sole Guidance of Nature , we are to carry our selves towards GOD ; the other , how we are to demean our selves with regard to our selves ; the last , how we are to comport our selves towards other men . For the whole Obligation of Man is compriz'd in these 3 Duties ; so that he may be said to have performed whatsoever appertains to him , if he carries himself Pi●usly towards GOD , Prudently towards Himself , and Equally towards his Neighbour . Wherefore seeing that the Duties we owe to GOD , do precede the other 2 , we shall first speak of them , and afterwards proceed to the other . II. What is Man's Duty towards GOD. The Laws wereby Man is obliged towards GOD , may be reduced to 2 Heads : First , That he have right Thoughts concerning GOD , and a a true Idea of his Nature and Perfections . In the next place , that he resign and conform his own Will to the Divine ; and that he look upon it as the greatest of Crimes , to deviate in the least from his Good Pleasure . And from these two parts of Man's Duty towards GOD , many Propositions , both Theoretical and Practical , may be deduced , whereon Natural Religion is founded , and by which , according to the Etymology of the word , Religion , a man is ty'd and obliged . III. The First thing we are to hold concerning GOD. The First thing we are to hold concerning GOD is , that he Exists ; that is , that he hath an Actual Existence , and is the Principle of all other things . This being no more , but what is demonstrated to us by the Amplitude and vast Extent of the Universe , the unconceivable Variety of it , and the Beauty and Harmony of its Parts ; since none of all these could have the constant Continuance and Regularity they are found in , except the World were at the Command of a most Wise Governour , and did persevere by an immutable Law. By this Contemplation alone of the World , the Philosophers of old attain'd to th Knowledge of GOD , as being fully convinc'd , that such an Exquisit and most absolute Work , could not proceed from less than an Omnipotent and most Perfect Being . If some Modern men , that aspire to that Name , seem to be of another Opinion , it is to be attributed to their Ignorance . For as a confus'd Perception of things , and Superficial Knowledge incline men to Atheism ; so a clear and profound Knowledge of things , raiseth the Mind to the Veneration of GOD , and not only excites it , but even strongly compels it thereto . 'T is the Fool only that saith in his Heart , there is no GOD. For whole Mankind , from the very Beginning , ever was in perpetual possession of this Truth , seeing there was never any Nation , ( as TULLY expresseth it ) so Barbarous or Savage , that did not own a GOD , tho' it may be they were not able to determine what kind of Being he must be . And accordingly JUSTINIAN , 2 F. de Just . & Jur. reckons Religion towards GOD , amongst the Laws of Nature , and the Right of Nations ; forasmuch as all Nations agree in a general Worship of GOD , and , as it were , by the Attraction of this common Principle , are united and reconciled . Book . 1. Part. 10. Chap. 23. G. Freman . Inv. I. Kip Sculp To the Right Worshipfull Sr. James Edwards of the Citty of Yorke Baronet This Plate is humbly Dedicated by Richard Blome V. Thirdly , That He is the Preserver of the World. The Third thing we are to hold concerning GOD , is , that he is the Governour and Preserver of the Universe . As is evident from the admirable Order and Agreement of the Parts of it , which could not continue so long invariable , if they were not by some Supream Cause preserved in the same Condition . For daily Experience teacheth us , that whatsoever is made up of different Things , and are endued with different Powers , do stand in need of an Upholder , and will easily run into Confusion , except they be supported by an External Agent , and their Parts kept in their due Stations . And therefore the Ancients were of Opinion , that GOD had somewhat of the same place in the World , as a Coach-man in a Coach , the Singing-Master in a Choir , the Steers-man in a Ship , the Father in a Family , and a King in his Kingdom . And that consequently , those who deny that GOD takes care of this World , and that all things therein are managed by his Conduct , are as Criminal Delinquents against his Divine Majesty , as they who say , there is no GOD at all . VI. And , that he hath a Special care of Mankind . We are likewise to consider , that GOD not only Governs the whole World ; but that he also Exerciseth a more Special Conduct towards Mankind , and that he is the Immutable Cause of all the Actions which depend on the Free-will of Man. For since it cannot be demonstrated , that he doth Exist , except that he be considered as a most Perfect Being ; and that he could not be so , if there were any thing in the VVorld that did not proceed from him ; consequently we can prove from Natural Philosophy alone , that not the least Thought can enter into the Soul of Man , without the Will of GOD , and except GOD had Will'd it should from all Eternity . VII . Fourthly , That he is most highly Perfect . The Fourth thing we are to be persuaded concerning GOD , is , that he is Sovereignly Perfect , and that no Attribute belongs to him that implies the least defect . For seeing that he is Infinite , he must of necessity include all those Perfections which the Mind of Man is capable of Conceiving ; and consequently we must own him to be Sovereignly Good and VVise , Eternal , Omnipotent , Immense , and so Perfect , that it is equally impossible to addany thing to Him , or take any thing from Him. But forasmuch as the Divine Perfections cannot be comprehended by any Human Understanding , in order to the Expressing of them , we shall make use of such Terms , as shall more magnificently unfold his Supream Excellence , and impress upon us a greater Veneration . For when we hear that GOD is One , Immense , Incorporeal , Immortal , Infinite , Incomprehensible , &c. we seem to launch into a Boundless Ocean of Perfections , and are forc'd to confess , that the Amplitude of such an Essence can by no means be reached by our Intellect . VIII . Nothing must be attributed to GOD , that includes either Dependance or Imperfection . And accordingly they Sin against the Law of Nature , who say , that GOD sees things , before ever he did determine himself to Will them ; that he consults the Order of his Acting , before he Acts ; that his VVill indeed is , that there should be no Monsters ; but that the simplicity of the Laws of Motion doth necessitate him to suffer them ; and other such like , which import Dependance and Imperfection in GOD. IX . We must remove from GOD every Imperfection . Wherefore we are to remove from Him whatsoever implies any Limitation or Defect , and all those Affections which imply or suppose the want or absence of any Good. And if we find , that Passions are sometimes attributed to GOD , as when the Scripture speaks of his Favour and Munificence towards those that are Good , and his Vengeance against the VVicked ; we are to remember that the Scripture in these Expressions , accommodates its self to the Capacity of our Human Understanding . In like manner we find , that Holy VVrit attributes to GOD , VVrath , Jealousy , Indignation , &c. by a Metaphorical way of Expression accommodated to our Weakness , and rather designing to represent to us the Effect of that Affection , than the Affection it self . X. Such a● Figure , Motion , Parts , Place , &c. In like manner , those also Sin against the Law of Nature , who attribute to GOD any Figure ; because every Figure is determined and bounded : Those who say , that GOD is composed of Parts , or that he is a VVhole ; because all these ways of Speaking import Attributes ▪ that belong to Finite things ; and those also who say , that GOD is in a Place , because nothing can be in a Place , but must have its Greatness or Bulk bounded on every side . Those also Sin against the same Law , who assert , That GOD Moves himself , or that he Rests , because both these suppose the being in a Place , which is inconsistent with GOD. XI . GOD is to be Honoured by Man. Neither is it enough for Man to know GOD , but he must also worship and celebrate him . For the Practical Propositions whereof Natural Religion doth consist , are conversant about the VVorship that is due to GOD , which is partly in the Mind of Man , and partly without it ; that is , either Inward or Outward . By the Inward VVorship , we understand the Honour that is to be given to GOD , in consideration of his Power , in Conjunction with Goodness . For Veneration , as was said before , is an Inclination of the Soul , not only to have high Thoughts of GOD , whom it worships ; but also to submit and resign it self to him , with a kind of Awful Fear , to obtain his Favour . And therefore no Man Honours GOD more , or serves him with a purer VVorship , than he , who by the Holiness and Innocence of his Life endeavours to become like him , and would rather dye a thousand Deaths , than to suffer that Holy Image of GOD , which he discerns and owns within himself , to be defiled by any Crimes , or stained with any the least Vice or Immorality . And from the Consideration of his Glorious Majesty , he is stirr'd up to desire him , as his Author or Maker ; to love and call upon him , as his Father ; to honour him , as his King ; and ●o fear and reverence him , as his Lord. XII . After what manner GOD is to be beloved by us . In order to the easie acquiring of this Habit of Loving of GOD , and the having a most profound Fear and Reverence for him ; we must frequently reflect , that GOD commands us nothing , but what is for our Profit or Advantage , and that his Power and Goodness are so Great , that He hath Created an infinite Number of Beings , which serve for our Preservation ; which Consideration will fill us with so much Admiration , Respect and Gratitude for our Great GOD , that knowing him to be the Source of all True Good , we only and above all things shall desire to be united to him with our VVills , and to love him in the most perfect manner possible . XIII . With Outward Worship . Neither are we only to render unto GOD the Inward worship of our Hearts ; but we must also give unto him that which is Outward ; which we then do , when in Thankful Remembrance of his Benefits , we render Thanks unto him , and acknowledge him to be our Beneficent Father , GOD and LORD ; and by our Hearts or Eyes also lifted up unto Heaven , do admire his Power and praise his most Holy Majesty . When in a deep sense of our own Infirmities , we pray unto him , implore his Assistance , and humbly beseech him to help and succour our Infirmities ; and that he would be pleased to bestow upon us those things he knows to be good for us , and to turn away from us all things that are hurtful . Whilst we abandon and resign our selves wholly to his VVill , and in all things complying with the same , and embracing whatsoever happens to us , as that which from all Eternity was Decreed concerning us . Wherefore let our Modern Upstarts take heed , that they do not too curiously search into the Nature , Decrees and Government of GOD : But rather entirely persuade themselves , that he is most intimately acquainted with what is most Expedient for us ; and that it is impossible , but that he who Loves all things , Does all things , Perfects all things , and Contains all things , should not always do the best of all in all Cases whatsoever . XIV . And in Publick places . Neither is it sufficient for us , to offer Innocent and Holy Hearts to GOD , and to pray unto him in the secret Retreats thereof ; but it is moreover required , that we pay him our Devotions openly , and in Publick places . For who is there that believes GOD , and can be asham'd to pray unto him , to praise him , and to offer Himself , and all his Powers and Faculties , for a whole Burn●-Offering unto him ? Fear or Shame in this case , is a mark of Degenerate Souls ; neither can he be said truly to worship GOD , who is asham'd to render him the Veneration that is due to him , and openly to profess , what in the most inmost Recess of his Heart he owns and adores . And on the contrary , when in the Churches and Publick places of worship , we render him the Glory that is due to his Divine Majesty ▪ testifie our Devotion , and are Zealous for his Honour ; we by our Presence and Examples do also incite others to exhibit the like Honour and Reverence to him . CHAP. XXIV . Of the Duties of Man towards himself . I. The First Duty is , That he be a good Member of the Society . MAN being most dear unto himself , and having his Eyes fix'd upon his own Good and Welfare , as the Center from whence all his Operations flow , and to which they return : It seems altogether superfluous to prescribe Laws unto him , to take care of himself , procure his own good , and advance his own interest . But forasmuch as man was not born for himself only , but made by GOD for the good of Human Society , he ought so to behave himself as to be a fit Member of the Body Politick , and that as far as his state and condition permits , he be of use and service to the same . For no body is exempt from this Law ; for how dull and stupid soever a man may be , and unfit for business , yet he makes himself obnoxious to the Laws , when he is not serviceable to the Community by some Art , Employment or otherwise . Every one must take care therefore that he be furnish'd with Vertue , Good Manners , and a sense of what is Good and Right : for as the Soul excells the Body in Dignity , and commands the whole man ; so great care is to be taken in the improvement of it , to the end the Body may be obedient to its conduct , and perform its motions according to the Rules of Reason : wherefore every one is bound according to his fortune and natural gifts , to betake himself to some Profession , Art or Science , and choose to himself such a way of living , that he may not for the future , be burthensome to himself or others , or a useless member of the Society he belongs to . II. How our Body is to be Governed . And as we are to take care to furnish our Minds with Arts and Learning , so we are to bind our Body to its good Behaviour , lest being pamper'd it become unruly , and prove refractory to its Lord and Master the Soul. Accordingly we must take heed to feed it with necessary food only , and exercise it with labour , lest by intemperance in eating or drinking it run headlong into filthy Lust ; and being dull'd and stupified by Idleness and inactivity , it become a clog and dungeon to the Mind . And forasmuch as the Passions do arise from the conjunction of the Soul and Body , and derive their force and strength from that unequal Society , all diligence must be used for the restraining and moderating the same , and timely quelling their first motions . For the Passions are like Souldiers that attack a place , who except they be beaten off at their first coming on , easily make themselves Masters of the Place , and take Prisoners , or cut down all they find in it . Book . 1. Part. 10. Chap. ● Lens . Inv. I. Kip S To the Worshipfull Thomas Raulins of Kilreeg in Hereford shire Esqr. This Plate is humbly Dedicated by Richard Blome . Book . 1 ▪ Part. 10. Chap. 25 L●●● Inv. I. Kip To the Right Worshipfull Sr. Gilbert Gerard Cossine of Brafferton hall in the North Rideing of Yorkeshire Baronet Grandson of the Right Revernd Father in God John Cossine late Lord Bishop of Durham . This Plate is humbly Dedicated by Richard Blome IV. A man is bound to resist him that sets upon him . Man therefore being bound to preserve himself , it follows that he ought to defend himself from the Assaults of an Aggressor , and to repel his force by force , if there be no other way left for him to avoid it , or to f●ee from the danger . For tho' by killing of our Enemy , the Commonwealth suffers loss , and the same as if he who defends himself were killed ; and that every man is bound to procure the common Good , Safety and Prosperity of the Commonwealth , and of every one of the Members thereof ; yet this is only supposing that his person be not endanger'd thereby . For no Law can oblige us to betray our own safety , and conspire our own Ruin , to save a wicked person . Yea , every one hath a natural and inborn right , to stave off any violence done unto him , with all his might . For if it were otherwise , who could be said to be the Possessor of any thing he had , if it were lawful for Robbers to deprive him thereof , without his daring to oppose them , and to rescue his goods out of their hands ? For what is it else to prohibit a mans defending of himself and his own Goods , but to drive Justice out of the World , and to bestow upon Thieves and Robbers that which is the property of other men ? V. That we ought to spare even the Life of our Enemy Yet must not we in this just defence of our selves endeavour to take away the Life of our Enemy , if there be any other way for us to avoid his fury ; as for Example , by hindring his access to us , by getting into a safe place , or by exhorting our Enemy to desist from his intended Cruelty . VI. Especially if he repents and cries Pardon . And if it happen that the Aggressor do repent of the Injury he hath done us , begs our Pardon , and promiseth to make amends for the hurt he hath given us ; in this case , he that is affronted or set upon , ought to be reconciled to him , and leave all thoughts of Revenge . For his Repentance shews him to be changed , and that he is no longer an Enemy : And the very Law of Nature commands us to forgive the past faults of those who repent that ever they have affronted or offended us , and who ask Pardon for it . Except it should be made manifest that this Repentance was only the effect of force , and that the Offender did not desire Pardon , and to be reconciled , but only because his Arms or his strength fail'd him : For in this case , we ought to lay hold of him , lest recovering his strength he should set upon us unawares . VII . How he is to behave himself who lives under a Magigistrate . He who is obnoxious to the Laws , may lawfully be made an Example , whensoever time or place will permit a man to have recourse to his Superior , for his safeguard and protection against the violence and assaults of his Enemy . Hence it is that Thieves and Robbers are lawfully kill'd , necessity putting Arms in our Hands to defend our selves , and what belongs to us . But where we can have recourse to the Magistrate , we are to bring them before him , that offer us any violence or injury ; it being only for want of this , that we may make use of the Right which the Law of Nature gives us , and by repelling force with force , take away the Life of the Aggressor . VIII . Thieves may be lawfully killed . As we may kill a violent Aggressor , so likewise do the Laws of Nature permit us to kill a Thief , that endeavours to rob us of our Goods . For these external things are the means whereby our Lives are maintained , and in the preservation whereof our State and Honour depends . Hence Lawyers call these outward Good things the Life and Blood of Men , which may be defended at the hazard of another mans Life , as well as Life it self . And tho' in Cities sometimes the thing stolen may be recovered by the help of the Magistrate , yet no man is bound to suffer the taking away of his Goods , because he may probably afterwards recover them ; forasmuch as he hath not only a right to recover them when stolen from him , but also to preserve and keep them from the violence of others . And if this be so , that a man may defend his Goods at the peril of the Aggressor , I see no reason why a Woman , whose Chastity is attempted , may not kill the Ravisher ; seeing a Vertuous Woman hath nothing that is dearer to her in this World , than her Honour and Chastity , and that no greater loss can happen to her , than to be by force deprived of the same . CHAP. XXV . Of the Laws we are to observe with respect to other Men. I. The Duty of Man towards others consists i● two things . THE whole Duty of a Man is contained in behaving himself Reverently towards GOD , Prudently towards Himself , and Justly towards his Neighbour . The two foregoing parts of Mans Duty we have already spoken to , and now proceed to the last . The Duty therefore of a Man towards others , First of all consists in this , that he observe an Equality , and do not prefer himself before others . Secondly , That he hurt no man. For the peculiar Law of Man , as he is a Reasonable Creature , according to JUSTINIAN § Instit . de Just . & Jur. is reduced to these thre● Precepts , To live Honestly , not to hurt another , and to give to every one his Right . Now he gives to every man his Right , that doth not prefer himself to any ; but being mindful of his Human Condition , embraces all with an equal Love in the like Circumstances . For tho' a man excel others in Vertue , exceed them in bodily Strength , be above them in gifts and endowments of Mind , and do more abound with Goods of Fortune ; yet is he for all this never a whit the less bound to observe the Laws of Nature , nor hath he therefore any more Right to hurt others , than they have to injure him . For as Nature is benign and kind to all , and equally dispenseth to all the desire of Truth and Right ; so likewise there ought to be an equal Charity maintain'd amongst men , and the same common Offices of Good-will one to another . For there is nothing more conducive to the preserving of a Sociable Life , than for men to do by others , as they would have others do by them ; and for them not to expect or require any thing from others , but what they would as willingly , that others should demand of them . II. Equality is to be preserved amongst all Men. In order to the putting of this Equality in practise , it will be very conducive well to weigh and consider our Nature and Original , viz. that we were all formed out of the dust or mould of the Earth , and came all of us into the World after one and the same manner ; and that being nourish'd by the same Aliments , we after some years arrive at Old Age , and at last all of us alike submit to Death . III. We are to return one good turn for another . This Equality amongst men thus supposed , it follows , that if we desire the helping hand of others , and their assistance in any of our affairs , we must be every whit as ready to lend them ours , and to procure their good and advantage . For he would be unjust , that should make use of anothers help for the promoting of his own Interest , and looking upon it as his due , should not be ready to do the same service to the party that had obliged him by his assistance . Wherefore as they take most care for the good and advantage of the Society , who do not allow themselves any more than they would gladly allow to another : so that person ought to be lookt upon as an overturner of the Society , who affects a superiority , and expects honour or Service from others , and in the mean time disdains to return the same again to them . Hence by the Law of Nations this Permutation or Exchange hath been introduced , whereby I willingly grant unto thee the thing thou dost demand of me , upon condition , that thou in like manner do grant unto me , another thing I ask of thee , having first made a tacit estimate of the value of both things with our selves . IV. No Man hath Right to prefer himself before another . Those are defective in the performance of this Duty , who , because of their Riches would be preferr'd before others ; and despising the Equality whereby Nature hath level'd all of us , and set us upon even ground , do conceit a vast distance betwixt themselves and others : whereas it would be much more becoming them to call to mind the manifold weaknesses incident to human nature ; the Errors and faults they have formerly committed , and are still obnoxious to ; the Passions that domineer over them , and to whose motions they are as much enslaved , if not more , than others . Moreover , forasmuch as there is nothing Praise-worthy in man , save only what proceeds from his Free Will , there is no reason why any one should prefer himself before another , since they may as duly make use of their Reason , and with equal constancy continue in the purpose of doing those things which Reason persuades and recommends to them . For in this firm purpose doth the very Essence of Vertue consist , and which may be found as well in a Commoner as in a Prince , in a Poor Beggar as in a Rich Man. Nothing more becomes a man of a generous temper , than vertuous Humility , which consists in this , that a man seriously consider Human frailty and weakness , which he finds in himself as much as in others . V. No Body is to be despised or flouted at by outward marks of contempt o r derision . But their fault is yet more gross and inexcusable , who undervalue and trample upon others , not only by inward disesteem and contempt , but also by some outward signs , as by Words , Looks ▪ Laughter , do flout at and vilifie others . Which offence is the more criminal , forasmuch as this behaviour is exceeding provoking , making the party so derided to be inflamed with Anger , and to be strongly moved to seek for Revenge . For so impatient is the Mind of Man of Affronts , that many are not affraid to hazard their Lives to revenge them , and will rather violate a long continued Bond of Friendship , than to bear an open and petulant abuse . For a Mans Reputation and Good Name is wounded thereby ; as we find daily , that he is oft undervalued by others , who suffers himself tamely and cheaply to be abused . VI. No Man must be hurt by us . Another Duty every man is to practise towards his Neighbour , is to hurt no Body . For it is the Law of Nature , 206 F. de Regul . Jur. That no Man make himself Rich at anothers Cost . The Equity of this Precept may be gathered from the consideration of Man , both as he is a Singular Person , and as he is a Member of the Commonwealth . For as it is contrary to Heat , to be the cause of Cold ; and to Moisture to cause Driness ; so it is contrary to the Nature of a Just Man , to offend his Equal , or to provoke him by doing any hurt or injury . Thus DEMONAX , the Philosopher in Lucian , boasts himself , that he never went to Law , never was troublesom to any , but always was a Friend to all , and an Enemy to none . In like manner it is also the property of a Good Man not to hurt any . For Nature hath ordained a kind of Alliance and Consanguinity between Men ; whence it is criminal and highly unjust for a Man to lie in wait for another , to betray or cheat him , or to invade what belongs to his Neighbour ; because by this means the Communion between Mankind is dissolved , as the soundness and healthful state of the Body is overthrown , when a stronger part attracts the sustenance that belongs to all the rest to its self , and instead of only taking its due , usurps that which appertains to the whole Body . VII . What Harm or Damage is , and how is must be made good . When it is said that we are not to do any harm or damage to any : By the word Damage is to be understood , whatsoever may cause any detriment or inconvenience to any one ; such as are the Taking way of what belongs to another , Depravation , Diminution , intercepting of the Rent or Income proceeding or hoped from any thing . Because it is not only the Possession of things that is rated or valued at a Price , but also the future perception of the Rents and Incomes of it , in case they are surely to come to our Hands . Wherefore every one that harms another , either in his Goods , or in his Good Name , is bound to make Reparation of the Damage he hath done to his Neighbour . For a Good Name is the greatest of all outward Good things ; which being once lost , all other Enjoyments are lost together with it . Now a Man may damage another , either by himself , or by the help and assistance of others : but which way soever it be done , it is always imputed to him that is the Agent , and he is bound to make Reparation for it . Because it is agreeable to Reason , that he that hath done the Hurt , should make amends for it , and make good the Damage he hath been the cause of , tho' he did it by another ; for he that does any thing by the ministry or help of another , does the same as if he acted it himself . But if many persons do equally concur to the doing of any Harm or Damage , they are all of them bound to make good the same , according to their several Degrees of concurrence to it . In like manner he who by his Counsel , or Advice incites another to a Crime , or gives him the occasion of committing it , that himself may get profit by it , is bound to restore whatsoever damage or hurt this means may happen to the party offended . But the case is not the same with respect to him , who hath only given occasion to the doing of a thing , or assisted the Delinquents with his Counsel , without any advantage thereby accruing to himself . VIII . Whosoever by his Negligence is the cause of the spoiling of any thing , is bound to make it Good. Neither is he only bound to make good the Damage done to his Neighbour , who by falseness and design hath harmed another , but also who by his Carelesness or Laziness hath suffered this harm to come to him . For it is necessary in order to the preserving of Human Society , that every one do carry himself with such Caution , that he may be useful to the Society , and that he may not by his Idleness be a Burthen to any . He who by chance , and without set purpose doth hurt another , as when a Man Fighting among the thickest of his Enemies , doth by chance wound his Fellow Souldier that stands near him , without any such intent , or knowing him to be so , cannot be compell'd to the making good of the hurt he hath done him . For seeing that the fault was committed without his Will or consent , therefore neither can it be imputed to him ; for there seems to be no sufficient reason , why he who hath committed a fault against his Will should be lyable to be amerced , rather or more than he who is Wonded . IX . Masters are bound to make Good the Damage or Hurt done by their Servants . Neither are we only obliged to repair the Damage we our selves have done to others , but also that which hath been caused by our Servants , Cattle or other Living Creatures . For seeing that Servants are parts of the Commonwealth , they are bound to the same Laws as their Masters are ; and whereas they possess nothing whereby they might be in a condition , to make good the hurt they have done ; it is but just that their Masters should be bound to repair it , or else to deliver them into the Hands of those whom they have injur'd . For otherwise a Servant , especially a Slave , would be at Liberty to hurt whom he pleased , if no reparation were to be had neither of him , nor of his Lord and Master . And the same may be said of our Cattle , or other Living Creatures that belong to us , as when our Cattle Trespass upon other Mens Ground , or when they chance to Kill or Wound any Man. For seeing that the owner of any Living Creatures , makes use of them for his own profit , and that they are gainful to him , it is but just that Reparation be required of him , if he hath a mind to keep them still ; or if so be that he doth not value the said Creatures so high as the damage is rated , that then they be Killed . It is fitting that he who knowningly hath done any prejudice to his Neighbour , do freely offer Reparation to him , lest his Neighbour being offended and provoked , should think of returning like for like : So in like manner he who hath received the injury , ought to wink at it , and be ready to be reconciled with him that hurt him . He who doth otherwise violates the Laws of the Society , and breaks that Peace which is the Foundation and support of the Commonwealth . CHAP. XXVI . Of the Laws of Mutual Humanity . I. Every one is bound t● be helpful to his Neighbours . GOod-will is a Quality , that is inborn in the Minds of all Men ; so that he seems to have shaken hands with Humanity , who is not ready to do good turns to his Neighbour . For it is a Law of Nature , that every one should bear Good-will towards others of his own kind , and , as far as his condition and circumstances will permit , endeavour to procure their Good. For since Nature hath made an Affinity and Kindred between all Mankind , joyning them together in a Brotherly Band , it is not enough for them that they do not hurt one another ; but it is over and above necessary , that they assist and succour each other . Now Men become useful to others , either in their own persons , or by imparting such Conveniences or good things to them , as are beneficial and advantageous to them . II. Who are useful , and who useless to the Commonwealth . By our selves , or in our own persons we become useful to others , when from our very Child-hood we are educated in good Manners and Literature , and acquire those Accomplishments of Body and Mind , the fruits whereof may afterwards redound to the good of others , and our Actions procure Honour or advantage to the Commonwealth . And therefore they are injurious to Human Society , who lead a lazy and slothful Life , and indulging their Body only , consider none but themselves : And who with the Riches they have got , or inherited do Fat themselves like Hogs , minding nothing else , but to Live as long as they can , and to Glut themselves with Pleasure , and wallow in all manner of Luxury . III. Who are to be honoured in a Common-wealth . But they who lay out themselves for the Service , Honour and Advantage of the Common-wealth , ought to be had in high esteem by all the Members of it , whose Duty it is to promote as far as in them lies , all their good endeavours , and to take heed lest being moved by Envy , they despise the things they understand not , or which they themselves despair of attaining to . For what can be imagined more unjust , than to think ill of them , who are of use to their Country , and to hate those who lay out themselves in doing good to others , and make it their Business to promote the publick Good ? IV. We are freely to give those things , the bestowing whereof is no detriment . The things that we may bestow upon others are , such especially as we can part with , without any damage or prejudice to our selves , but are of great advantage to the Receiver . And accordingly the Law saith , whatsoever is of advantage to me , and is not at all hurtful to thee , the same it is not fitting that thou shouldst hinder me of ; for this is the Dictate of Equity , tho' it be no due of Justice . It is a piece of a Malicious Nature in any one , to forbid others to draw Water at his Well standing by the way side ; or to envy others that are in darkness to enjoy the light of his Candle ; or who will not permit his Neighbour to kindile a stick of Wood in his Fire ; forasmuch as all this may be done without dimminishing of the Water in the Fountain , the Light in the Candle , or the Fire on the Hearth . Wherefore , when any one undervalues the possession of any thing belongs to him , and intends to make no further use of it , it is not only inhuman , but unjust to deny the same to another , and rather suffer it to be spoiled , than that it should be of use and advantage to others . Wherefore according to the Law of Nature , tho' outward Laws ●e silent , all things that are of no use , belong to the Poor , and Rich-men are bound at the least , to bestow all those things on the Poor and Needy which they leave off , as likewise the superfluous Meat of their Tables . V. We must be Noble and Generous in the Relieving of our Neighbour . But forasmuch as this last mentioned , is the least piece of Humanity we can express to others , they act more generously , and shew themselves more to be Men , who are ready to do good to others , tho' with some detriment or prejudice to themselves . Only we must take care , that these our Charitable Offices , be not hurtful to those who receive them , and instead of being beneficial to them prove their Bane . Thus it is with good reason , that we refuse putting Arms into a Madmans Hands , deny one that is Sick of a Dropsy cold Water , are importunately troublesome to one that is Sick of a Lethargy to hinder him from Sleep , and keep Mony from him , who we know will go and throw it away at Dice . Because in the bestowing of Benefits , we are not so much to mind the Will of those who desire them , as of what use and advantage they will be to them . VI. Gifts or Benefits are to be bestow'd freely . In our bestowings of Benefits , there must be no hope of receiving the like in lieu thereof ; because Vertuous Actions carry their Reward along with them , and therefore are to be practised without any respect of gain , or advantage to be reaped from them . Thus we give to Poor Seamen , that have been Shipwrackt , whose Faces we shall never see again , and relieve and succour the miserable , meerly because they are so , and because it is a Duty of Humanity incumbent upon us , to take Pity on the Calamitous and Miserable . By the same motive , we sometimes bestow our Benefits secretly , without making our selves known to those whom we relieve , to comply with their Shamefacedness , and that they may rather seem to find it , than to receive it . VII . The Duties of those who receive Favours or Benefits from others . In the receiving of Benefits it is required , that we be thankfully affected towards our Benefactors , and express our acknowledgment to them , and how ready we shall be upon occasion to return their kindness with advantage . Not as if it were necessary , that our return should be always of the same value , and estimate with the benefit received , for in many cases it is sufficient if only with a sincere Will , and grateful Mind , we acknowledge our Obligation , and are ready to make a return , tho' it may not be in our power to do it . Tho' indeed where Men are able , it is better to express their Gratitude , by returning the like good Offices and Benefits , besides the testifying of our thanks by words . For the great use of Benefits , is to beget a nearer Union and Love amongst Men , and to be an occasion for the exercising of Benevolence and Liberality . But if any one is unwilling to be engaged to another , he may refuse the offered kindness , or at least so handsomely decline it , as that he that offers it , may not take it ill , that his Good-will or Kindness is slighted . VIII . There is no Vice more abominable than is that of Ingratitude . A Man cannot be guilty of a more shameful Vice , than that of Ingratitude ; insomuch that there are no Nations so Barbarous , no Manners so Savage , but do condemn and detest it . For tho' an unthankful person be no● injurious to another , yet is he no less infamous than a Thief , a Murtherer , or a Traitor ; seeing that the very Wild Beasts themselves , when engaged by our care and kindness , are not wanting to express their thankfulness , not only in acknowledging it by their gestures , but often by defending their Benefactors in time of danger . And accordingly the Law of Nature ordains , that we never receive any Benefit , but with such an inward Disposition , that the Benefactor may never have any occasion to repent himself of having bestowed it upon us . The reason of which Law is , because if we receive a Benefit with a Disposition contrary to this , there will be no more Kindness to be found amongst Men , and all Amicableness will be banisht from amongst them . IX . Why we cannot bring an Action against an ungrateful person . But you 'l say , if the abominableness of this Crime be such , why are not ungrateful Men impleaded , and why may not an Action be had against them ? To which I answer that the reason is plain , because a Benefit is a free Gift , and being a Vertuous Action must not be omitted , because of the unthankfulness of the Receiver . Besides , Gratitude cannot be lookt upon as a strict due , because it was not agreed upon contract , tho' there might be some hope of it . Moreover , if an Action might be had against an ungrateful Man , seeing there be so many of them in the World , all Courts of Justice would not be sufficient to hear or determin them , and the rather because of the manifold Circumstances which alter the Benefit , and encrease or diminish it . CHAP. XXVII . Of the Laws that are to be observed in Covenants and Contracts . I. What a Covenant is , and the Original thereof . BY the word Covenant is meant the Consent , or Agreement of 2 or more to the same thing . And it takes its original from hence , because there are many Benefits and Good turns , to the Performance whereof we are obliged by the Laws of Humanity , which yet cannot be exercised without some Injury to our selves , and therefore it was necessary , that Covenants should be entred into , by which every one might demand his own , or require and expect what is anothers , but without his Damage or Prejudice . II. Covenants are to be faithfully kept and performed . It is required in all Covenants , that they who enter into them , stand to the Agreements they have made and consented to , and inviolably observe what they have promised . For otherwise , there would be an end of Human Society , Friendship would be banisht out of the World , and miserable Men would have no Refuge , whither to betake themselves in their Calamity . For what would become of all the good Offices of Humanity , and the freedom that is between Friends , if Promises should be broken , and Mens Actions should not agree with their Words ? Besides , where Men are not as good as their Words , endless matter is furnisht for Dissensions , Quarrels and Contests , because we cannot break our Words , without being Injurious to the other party concerned . And accordingly the Law hath so ordered it , that Men may be forc'd to perform their Covenants , and to pay what by their Promise they are obliged to . Book . 1. Part. 10. Chap. 2● To Francis Forbes of the Citty of London Gentleman This Plate is humble Dedicated by Richard Blome We Oblige or Bind our selves 2 several ways , viz. by Promise and Covenant . A Promise is the Willing or Spontaneous Obligation of a single person to perform something ; whereas a Compact or Covenant , is that whereby 2 or more do oblige themselves , to do something or other . A Promise may be divided into a Complete , or Incomplete Promise . We call that a Complete Promise , when he who promiseth any thing to another , is willing to be so far obliged , as to give him liberty to force him to perform his Promise . An Incomplete Promise , is that whereby a Man promiseth to perform something , yet without giving the other any Right to compel him to the performance of it . So that they who thus engage themselves to do any thing , are not so much bound by the Laws of Justice , as by those of Veracity . Tho' indeed Generous and Vertuous persons , without any such annexed Obligation , are always ready to perform their Promises , choosing rather to suffer some inconvenience , than not to be as good as their Word . IV. Consent is required to a Promise . It is requisit to the validity of a Complete Promise , that the pleading of ones word be Deliberate and Spontaneous ; for seeing that he who promiseth , may be forced to be as good as his Word ; he is inexcusable if afterwards he should complain of it : Because it was in his Power either to agree to it , or to refuse his Consent . Now a Man is judged to have consented , not only by External Signs , as by his Words , Handwriting , Nod , or other motions of his Body ; but even by his Silence , if other Circumstances concur ; because according to that common Saying , amongst the Lawyers , He who is silent , seems to consent . V. Who are in a condition to give their consent . To the end a Man may be in a condition to give his consent , it is required that he be in his right Wits , and in the use of his Reason , so as to be able to discern , whether the thing in Question be accomodate and fit for the end intended , and whether , what he agrees to can be performed by him . Hence it is , that the Covenants of Mad-men and Fools , are looked upon as void and in valid ; as also of Men in drink , if it be made appear that they were so far overcome by it , as not to be throughly sensible of what they did . For Consent supposeth a clearness of Perception ; and he may rather be said to be seized or hurried away , than to consent or agree , who by a precipitant impulse , without consideration is driven to the doing of any thing . So that he would be lookt upon as a Shameless and Unjust Man , who should go about to compel a Man to the standing to such alike Agreement , which at first was entred into by an invalid consent . VI. A mistake invalidates a Covenant . As Reason asleep or overwhelmed makes void a Contract ; so Error or Mistake doth weaken and invalidate it . For whosoever promiseth any thing to another upon condition , is not bound to keep his Word , in case the condition do not follow ; because the want thereof makes void the Obligation . And if there be a Mistake in the thing , about which the Covenant is made , it thereby becomes invalid , not only because of the mistake that is found in it ; but also because it is a contravention to the constitutions of Covenants and Agreements . For in order to the Selling , Letting , or Exchanging of any thing , it is necessary that the Buyer , &c. be fully acquainted with the Condition and Qualities of the thing ; forasmuch as without this knowledge , there can be no full consent ; and accordingly he who is about to buy or hire a thing , if any faults therein be discovered , may break the Bargain , or force the other party to make good the defect , or allow a consideration for the Damage . VII . Agreements are made void by deceit and falseness . Covenants are also made invalid by Deceit or Malice , when a Man is Circumvented by some fraudulent trick , and drawn into Agreement . Therefore he who by Deceit is drawn in to Promise ought to another , is not bound to perform the same , except of his own Free-will , and without any fraudulent enticement he do agree to it ; for then he is bound to stand to his Agreement , as long as there is no flaw in the thing , and that its true value be declared . For otherwise the Covenant becomes invalid , and it is in the power of him who finds himself agrieved , to break the Agreement , or to demand a Compensation of the Damage he sustains by it . But if another , who is not concern'd in the matter , about which the Agreement is made , do mingle any thing of Deceit with it , neither of the Parties agreed being partakers with him , then the Agreement stands firm notwithstanding . But so as it is in the power of him that suffers by it , to demand Reparation of the loss he sustains by his Malice . VIII . Fear doth not always break contracts . Fear , as it doth not take away the freedom of the Will , as hath been said in the 20th Chapter of this part ; so neither doth it dissolve Contracts . The suffering or punishment that is threatned by the Sovereign or Magistrate , if we will not consent to such an Agreement or Covenant , cannot invalidate the same , except they should go about by any unjust force to compel us to it ; because in this case the Injury they do unto me by the unjust fear they cast me into , makes them incapable of having any Right over me . And seeing that the Damage caused by another , ought to be repassed by him , by way of Compensation , that Obligation is supposed to be taken away , if no satisfaction be made for the thing , which ought presently to have been restored . IX . About what things Agreements may be made . As to the nature of the things that are agreed upon , or are promised , many things are required . First , that they be such as are in our Power ; for otherwise it would be an Argument of Madness or Dishonesty , for a Man to Promise or Covenant that which is not in his power to perform . For no body is bound to perform Impossibilities , according to that common Rule , There can be no Obligation to Impossibles . For tho' at the first , when the Covenant was made the thing was possible , if afterwards by chance , without the fault or neglect of the party bound , it be made impossible , the Obligation is dissolved , and the Covenant becoms void . X. They must be things lawful or permitted . Secondly , they must be things that are Lawful , for otherwise we cannot be obliged to the performance of them . For he that promiseth to give a Whore the meeting ; or hath past his Word to Maim or Kill another , is not bound to keep his Oath or Promise . Because no Man can bind himself to any thing which it is not in his power to perform : Now the Laws have absolutely depriv'd him of any such power , nor will suffer him to execute that , which they plainly prohibit . So that if he be guilty , who promises that which the Law forbids , he is doubly so , who having Promis'd such things , does stand to his word . XI . They must be such as we have a Right to . Thirdly , They must be Our things , that is , we must have a Right and Propriety to them ; because we cannot Promise any thing which belongs to another . But in case we have Promised to take care , that what we have Promised shall be performed by another , over whom we have no Command ; we are bound to use our utmost Diligence , and to omit nothing ( as far as in a Civil way we can ) that he may make good what we have so Promised . XII . Promises are made two several ways . A Promise may be made 2 several ways , either Absolutely , or upon Condition . Now a Condition may be 2 ways consider'd , either as Possible or Impossible . An Impossible Condition is either taken Physically or Morally . A Condition is Physically Impossible , when considering the Nature and Order of Things , the Matter cannot be done ; and Morally Impossible , when they are forbidden by Law , or contrary to the Laws of Honesty . And these Promises are either made by our selves , or by some Intervening Persons ; which we likewise are bound to perform , in case they have carried themselves honestly and faithfully , and have done nothing , but according to our Order . CHAP. XXVIII . Of Special Compacts or Agreements . I. What a Contract is THo' a Covenant and Contract be often confounded by Authors , and include , as ULPIANUS saith , the Consent or Agreement of two or more Persons ; yet to speak more exactly , a Contract seems chiefly to consist in an Interchangable giving and receiving ; or to be chiefly conversant about things of Commerce . II. Of Contracts Nominate and Innominate . Of Contracts , some are called Nominate , as Selling , Buying , Lending , Letting , Pawning , &c. which have a particular Name whereby they are distinguisht from others . Others Innominate , that have no particular Name belonging to them , but are only signified by the common Name of Contracts . And these are reducible to 4 kinds : I give that thou mayst give ; I give that thou mayst do : I do that thou mayst give ; and I do that thou mayst do . In all which Contracts , an Action is allowed in any Form of words , when a certain one cannot be assigned : For we find by Experience , that there is a greater plenty of Business or Affairs , than of Words . III. Some are Gratuitous , others Burthensom . Secondly , Contracts are divided into Lucrative , otherwise called Gratuitous , that is , such by which Profit accrues to one of the Parties concerned , without the Intervening of a Merchandize or Price : And Burthensom or Chargeable , in which both Parties have an Equal burthen charg'd upon them , and in which there is a kind of Recompensation . For it is the property of all burthensom and chargeable Contracts , that the Parties concern'd in it , have an equal Advantage by it , and undergo a like Burthen . Insomuch as if it otherwise happen , the Party who finds himself frustrated , hath Right to demand what is wanting to him , or else to break the Contract . And accordingly , it is usual in well-governed Cities , to have the prizes of every thing set and stated , to prevent all common Abuses in such cases . IV. Gratuitous , or Lucrative Contracts are Lending . Gratuitous , or Lucrative Contracts , are commonly reduc'd to these three ; a Loan , a Commission or Charge , and a Depositum or Trust . A Loan is , when the use of a thing is granted to another , without any recompence therefore received or appointed . It is his concern who borrows any thing , that he be very careful of the thing that is Lent him , that it may not be put to any other use , than what is prescrib'd by the Lender ; and accordingly is oblig'd to restore the same whole and sound ; excepting so much only as it may be the worse for so long using . If the thing Lent , whilst it is yet in the custody of him that hath borrowed it , come to be lost or spoil'd , the Value of it must be restor'd by the Borrower to the Owner : But if it be of such a Nature , that it could not have been better kept , if it had been in the Owners keeping , the Borrower is not bound to make it good . Yea , if it so happen that the Borrower hath laid out any thing towards the mending or improvement of it , it is but Just that the Owner should repay it , besides those Expences which always attend the ordinary use of any thing . V. A Charge or Command . A Charge is , when a Man takes upon him to perform a Commission he is charg'd with , without any hope of Reward . And he who undertakes any such Charge at the Instance of another , or of his own accord , must take care to be punctual in performance thereof . For seeing that no Body trusts his Affairs , but with a Friend of whose Faithfulness he is assured , the Undertaker ought to be very Solicitous to shew himself an honest and true Man , and that in all things he answer the Expectation of his Friend , and the Confidence he puts in him . Now he who undertakes any Command or Charge , must be allow'd for all the Expences or Damages that may be in the Executing of the said Commands . VI. A Pledge or Trust . A Trust is a Contract , whereby something is entrusted with another to be kept . The Person with whom the thing is entrusted , is called the Depository ; who is to take great care , that the thing he is entrusted with , be not lost or spoil'd , and that he be always ready , at the Will of the Deposer , to restore it . Except it should be more for his Advantage to want it for some time , and that it be found better ; because of some imminent Danger , to defer the restitution of it till a later date . But yet the Depository may not make use of the same , except with the Owners permission ; if either it be such a thing as grows the worse for using ; or if it be the Owners Concern that it be hid , and be not exposed to the Sight of others . VII . Burthensom or Chargeable Contracts , are Permutation . The most Ancient of all Chargeable Contracts , and received by all Nations , is Permutation or Exchange , used before Mony was Coyn'd , to be the indifferent Price of all things . The Formality whereof is prescribed § . Item ●retium de Empt. & Vendit : I willingly graunt you the thing you desire of me upon this Condition , that you likewise do , graunt me another thing which I ask of you , according to the tacit Estimation of both the things made by our selves . Opposit to this Contract is Donation , whereby a thing without any Compulsion of the Law , and out of meer Benevolence and Good-will is bestowed upon another ; forasmuch as it is not necessary that any Equality should be observed therein . VIII . Buying and Selling. To Permutation belongs also Buying and Selling , whereby a thing is either purchased or let go for a Price : For by the former there lies an Obligation on the Buyer , to deliver the Price agreed on for the Commodity ; as by the latter , the Seller is bound to let go the Commodity for the Pri●● ▪ Which is done many ways : As First , When there is a mutual Agreement , and the Buyer immediately offers his Mony , and the Seller his Merchandize . Secondly , When tho' the Merchandize be immediately deliver'd , the Price is not to be paid till such a set time after . Thirdly , When after that the Parties are Agreed about the price , the Merchandize is not to be deliver'd till a certain Time. In which last Contract , it is consentaneous both to Reason and Justice , that if the thing should come to be lost or spoil'd before the prefixed time , the Seller should bear the loss of it . But if after that time expired , the Buyer neglect the taking of the Commodity , if any damage happen to it , it must be at his Loss . IX . Letting and Hiring Letting and Hiring , are near of Kin to Buying and Selling , whereby , for an appointed Price , the use or worth of a thing is granted . I said , for an appointed Price : For if ( saith JUSTINIAN , Inst. l. 3. Titul . 25. ) I give a Fuller Cloth to be dressed , or to a Botcher Cloaths to be mended , without the appointment of a Set price ; but only that afterwards I shall give as much as shall be agreed upon between us ; this Contract cannot be called Letting or Hiring , but allows an Action set down in a precise Form of Words . X. What is to be observ'd in Hiring . About this Contract it is to be observed , that if in the Time of Hiring the thing be spoiled or perish , he who hires it , is not bound to pay the Price of it . In like manner , when a thing design'd to a certain use , which the Owner is bound to deliver safe and sound , does chance to suffer any loss or detriment , whereby it is made less proper for the use it is appropriated to : He who Hires it , may with Justice detract so much from the Price of it , as it is become less fit for its intended use ; tho' this cannot be where the increase or incom of the thing is uncertain . As for Example , If a Man have hired a Field , whose Fruits have been spoiled by the Unseasonableness of the Weather ; he is bound notwithstanding to pay the Hire he hath agreed for , tho' the Incom he has from it , for that Year , be little or nothing : For as a plentiful Incom doth not increase the Hire , neither doth it seem Equal , that a scarce Increase should diminish it ; since it frequently happens , that one Years Barrenness , is compensated by the Fruitfulness of the next following . XI . Things lent . Lending is a Contract , whereby a Man delivers something of his Goods to another , upon Condition that he , after some Space of Time , do restore to him as much of the same kind and goodness . Things lent , are such as are spent or consumed by using , and do consist in Number , as Mony ; in Weight , as Gold , Silver , &c. in Measure , as Wine , Oil , &c. The Gospel Law Commands us to lend , without expecting any Gain or Advantage to our seives there from : Which Law is transgrest by the Usurer , who tho' he be bound to relieve the Wants of his Neighbour , doth by Usury gain thereby , and enriches himself out of the miserable Remains of Shipwrack , by an unnatural Cruelty to those of his own kind . I am not ignorant of the Distinction the Lawyers make here , of the Ceasing Gain and Emergent Damage . And indeed his Case is different , who lends Mony to one that desires it , not to deliver himself from his present Necessities , but that he may Negotiate therewith , and make a great advance of Gain to himself from the Mony he hath borrowed ; and of him , who being shut up in a Prison , and miserably Poor and opprest by a Cruel Creditor , desires to borrow a Sum of Mony : For in this case , what he desires ought either to be given to him freely , out of Pity to his Condition , or at least be lent to him , without demand of Use for it . XII . The Conditions of the Contract of a Society . There is also another sort of Contract , which is called a Society Contract , or a Partnership , and is the Agreement of 2 or more Persons , whereby something proper to make Gain with ( as Mony , Work , Industry ) is contributed in order to a Common Use or Advantage . Now , to the end that such a Society or Partnership may be Just , 3 things chiefly are required ▪ First , That the Trade or Dealing they intend be Just and Lawful ; for no Man can be bound to that which is Unlawful . Secondly , That their Shares in Gain and Loss , be equally proportion'd to the Shares of the Stock laid in by the several Members of the Partnership ; so as that his Gain may be greater that hath a greater Share in the Stock , as his less that hath a less ; because by this means every ones Due is given to him . Thirdly , That the Loss in like manner be Common , and be equally divided amongst the Partners ; tho' sometimes the Contract be so , that one contributes Mony , and another his Work or Labour only ; which frequently is Equivalent to Mony. Wherefore the Origial Contract is to be heeded , and how the Parties are agreed about their Shares of Loss and Gain . CHAP. XXIX . How many ways the Obligation , arising from Covenants , may be dissolved . I. How Obligation may be taken away , by Solution of Payment . SEeing that Obligation is a kind of Tye or Engagement laid upon us by Law , whereby , as JUSTINIAN saith , We are of Necessity bound to pay some thing , according to the Laws of the Society we live in , the same is readily and Naturally taken away by paying or satisfying of the same . For thereby the Duties thence arising cease , as also the Action whereby a Man before was Bound . To the end this Payment may be duly made , it is not necessary that it be done by the Debtor himself , but it is sufficient if it be done by another , in his Name . For a Debtor is quitted of his Obligation , if the Mony be paid by another , tho' without the Knowledge , and contrary to the Will of the Debtor . Neither is it necessary always to pay the Debt to the Creditor ; but it is sufficient if it be paid to any one appointed by him . II. By Donation . Secondly , An Obligation is dissolved by Donation , that is , by Remission , or Forgiving of the Debt ; which is commonly done either by Acceptilation or Imaginary Payment , with the use of some Signs intimating a Consent or Agreement , which of old was in use amongst the Greeks ; the Debtor speaking these Words , You have received so much Mony : To which the Creditor delivering his Bond or Note , answer'd , I have received them . III. By Compensation . Thirdly , Obligations are taken away by Compensation ; as when the Creditor by a former Engagement was a Debtor , to his Debtor , owing him something of the same kind and value . For in things deliver'd for use , an Equivalent is reckon'd as the same thing . Hence it is , that in Actions at Law of this kind , Compensation was always allow'd of ; viz. an Exception , whereby any Man rids himself of his Creditor , by shewing that he is his Debtor ; for a Debt is Compensated with a Debt , Fraud with Fraud , and a Fault with a Fault , and this very very Justly too , saith the Law ; for we are rather not to pay , than to redemand what we have paid . IV. By a contrary Will. In the Fourth place , Obligations that are entred into by Consent or Agreement , are dissolved by a contrary Will : For suppose TITIUS and SEJUS have agreed together , that SEJUS should have a piece of Ground for 100 Pieces of Gold ; and that before the Mony be paid down , or the Land delivered , they should agree together to break their Contract ; it is evident , that by this means that Contract would be dissolved . And this is common to all Contracts , which are made and ratified by Agreement and Consent , especially that of Partnership , which continues only so long as the Parties abide in the same Mind . V. By the intervening of a New Agreement Obligations also are dissolved by the Intervening of a New Obligation , as if the Debt which John owes me , should by Agreement be made payable to me by Paul ; because this intervening of a new Person , makes a new Obligation to take place , and annuls the former . Neither is it necessary , that this latter Agreement be advantageous ; for tho' it were quite otherwise , yet would it notwithstanding make void the former . VI. By urgent Necessity An Obligation is likewise made void by urgent Necessity ; and therefore a Debtor that is reduc'd to extream Want , is not bound to pay his Creditor , tho labouring under the same Extremity of Want ; because in Extream Necessity all things are common , and the Condition of him who is in Possession is accounted the better of the two . VII . By breach of Word or Articles . He that breaks his Promise , and doth not perform his Articles , doth rather break off the Obligation , than make it to cease . For seeing that all Contracts are mutual , and that the Parties are equally bound to perform what they have agreed to , when one breaks his word , there is an end of the Contract : For the Pledging of our Faithfulness , supposeth the Faithfulness of the other party , and is as a Condition in reference to the other . I shall perform what you require of me , if you do first what I require of you ; and I will stand to my Promise , as long as you inviolably observe the Agreement we have made . VIII . By Death . Lastly , An Obligation is annull'd by Death , and any Contract ceaseth , when it rests only upon one Person , whereas the Agreement was made by two . For where the Subject is destroy'd , the Accidents which do attend it , must of needs perish likewise . Except that the Heir of the deceased Party , of his own inclination , or out of his respect to the Deceased , do take upon him to satisfie the said Obligation : Or , if by the Last Will of the Dead , he be bound to pay the Debts of the Deceased out of his Estate , and that he is made his Heir upon that Condition . CHAP. XXX . Of the Laws that concern Speaking and and Swearing . I. Deceitfulness in Speech is to be avoided . FOrasmuch as Covenants and Contracts are performed by Words , and that it is necessary for the maintaining of Human Society , that mens Minds be made known by Speech , we shall add something here concerning the Duties to be observed in Speaking in general , and afterwards of those that are to be heeded in Swearing . The first thing to be observed in Speech is , that we do not deceive any one by our Words , or by other Signs used instead of them , for the expressing of the Sense of our Minds . For the Truth of our Speech or Words must be constant and inviolable , after the same manner as we find that amongst Animals , some outward Species do remain , whereby they discern things Friendly or Inimical to them . II. Conditions to be observed in Speech . To the end the Praescript of this Natural Law may be the better understood , we are to take Notice , that a double Obligation lies upon those that speak , with Relation to their Words or Speech . First , That those who use the same Speech or Language , do make use of certain and determinate Words , to signifie such certain and determinate Things , according to the use of the Language that is received in the Country or City where a Man lives . For it is not lawful for any one , at his own pleasure , to Coin new Words , but must make use of those , which have been long approv'd of by Use and Custom , and signifie things according as they are taken and understood by all . Secondly , That every one do so open his Mind to another , as clearly to manifest what he intends , and so as that the same may be clearly apprehended by him he speaks to . This Obligation may arise , either from a particular Agreement a Man hath made with another , to discover unto him what he knows about such a business . As when one Agrees with one that is Master of any Art , to be taught the same by him : Or , from the Precept of the Common Law of Nature , whereby a Man is bound to impart his Science to another ; either for his Profit and Advantage , or to prevent some Evil that threatens him : Or , when by Law , whether Perfect or Imperfect , a man is bound to discover those things , concerning which he is Interrogated . III. When we may dissemble our Thoughts . But if those to whom we speak be of such a Temper , that an open and simple Declaration may be prejudicial to them , or that it may give them occasion of hindring and opposing what we are about ; it may be lawful for us to dissemble our Minds at that time , and to palliate our Intentions . For though it be our Duty to do good to others , yet are we not bound to do it , when we have good Reason to believe , that in so doing we shall be crost in the thing we intend . Neither is this to be call'd Lying ; for tho' our VVords do not exactly represent the Sense of our Mind , yet do they not of set purpose carry another Sense , than our meaning really is ; nor hath he to whom we direct our Speech , any Right to understand or know them : Neither are we bound by any means to cause him to apprehend our Intentions . For it is frequently Expedient in Human Society , that the Truth should be hid , and that the thing which is about to be undertaken , should be kept from the Knowledge of ma●y . IV. Fiction is no Lie. From what hath been said , may be gathered , that he is not to be lookt upon as a L●ar , who at play , by set Words and Gestures , endeavours to conceal his Intentions , to deceive the party he plays with , and to inveigle him to do that whereby he may lose the game . Nor he , who by feigned Stories and Fables deceives the Minds of Children , who are not yet capable of down-right Truth , with a design to excite them to the Love of Vertue and the Hatred of Vice. Nor he who imposes upon an Angry Person , comforts one that is sorrowful , or by colour'd Speeches persuades a sick person , that the Medicin he is to take is very grateful and pleasant . Because none of these are done with a design to deceive or wrong , but on the contrary , to do them good , and to ease them of that Passion which afflicts them . But the case is quite different where a man is bound to declare his Mind to another ; because by using doubtful Speeches , or discovering only one part of the Truth , he becomes unfaithful , and sins against the Rules of Justice . V. What an Oath is . Our Speech is capable of being ratified and confirmed by an Oath . For an Oath is the calling of GOD to wi●n●●s to the Truth of what we do assert : Or as others will have it , It is a Religious Act , whereby we call upon GOD as the Supream Truth , in witness to a thing , that is not sufficiently known to others . And accordingly the very Heathens themselves knew of no stronger tie whereby to engage to be faithful and to speak the Truth , than that of an Oath . For they who take an Oath , do bind themselves by the Aw and Reverence they have for GOD , to be as good as their Word , and to stand to their Covenants . And forasmuch as they own that GOD , whom they worship , to be Omnipotent and Omniscient , it is to be believed , that no Man is found so wicked , as to dare to provoke his Indignation , and to engage his Revenge . Wherefore he also who swears by false gods , supposing them to be true , is bound to perform what he hath sworn , and if he breaks his word , he is Perjur'd . VI. Three kinds of Oaths . An Oath is either Assertory , when we make use of it to confirm an Assertion about a thing present or past ; when no better way is found to discover the Truth . And such an Oath as this is required of Witnesses before a Judge , or from others , who some other way have any knowledge of the Fact. There is another Oath , which is called Promissory , when one by Oath promises any thing to another , and binds himself to the performance thereof . And lastly , there is another Oath of Decision , where 2 are that are in contest together , and presenting themselves before the Judge , one of them by taking an Oath , doth decide the matter in contest . VII . Of the Conditions to be observed in every Oath . That there may be an Obligation upon a Man , to keep his Oath , it is requisit , First , That he know the thing to be true or false , which he asserts or denies by Oath ; or whilst he speaks , according to what he thinks , and is persuaded thereof , whether it be so or not . For he that swears to any thing which he judges to be so , his Oath cannot be blamed , because he speaks according to what he thinks and is persuaded . Secondly , It is requisit that he take his Oath Seriously and with mature Deliberation . And therefore he who repeats the words of an Oath to another , is not bound thereby ; but he that speaks them seriously , and with the posture and formality of those that take Oaths , tho' it may be , he intends nothing less in his Mind , than to be true and faithful to what he swears . VIII . We must not swear contrary to our Conscience . Wherefore I cannot assent to their Opinion , who suppose that a Man who is brought before a Judge , about a Debt of 100 pieces of Gold which he owes to another , may swear falsly , in case he knows that the payment of that M●ny should cast him into extream Difficulties . For they seem to suppose , that GOD , the Sovereign of Truth , may be produced as the witness to a Lye ; as if he did not behold , and in due time would Judge and Revenge those , who , in so daring a manner , do affront his Majesty . For what else is it to deny a just Debt , but to deny GOD to be Just and Equal , and to promise impunity to perjured Persons ? For if ▪ it be lawful for a Man to forswear himself , and to think one thing , and speak another , the validity and reverence of Oaths , and of all Covenants and Contracts will be banisht from the Societies of Men , and nothing but Fraud , Deceit and Iniquity will be found in all their agreements and dealings together . IX . What is t● be considered in him . that swears or takes an Oath . Yet must not every Oath be taken for such , except that we be assured that it hath all the Conditions requisit to a Valid and Lawful Oath , and which ought to be rigorously , and not perfunctorily examined . For he , who out of hatred swears against another ; or he , who being tertified by the Threats of an Enemy , doth conform his Promise with an Oath , is supposed not to have sworn at all , seeing that he never did it with any voluntary Deliberation , but being hurried on by fear and Passion only . In like manner he , who promiseth somewhat to another indeterminately , and confirms his Promise with an Oath , is not bound thereby to grant to another what is dishonest , absurd or hurtful ; because it is supposed , that he who hath made the demand is led by reason , and consequently would not desire any thing that is morally impossible or unjust . CHAP. XXXI . Of Dominion , and the Duties thence arising . I. The State and Condion of the First Men. NOthing is more celebrated in the Writings of the Antient Poets , than their state of the First Men in the World. The Golden Age was first , which uncompel'd , And without Rule , in Faith and Truth excel'd . As then there was nor Punishment , nor Fear ; Nor Threatning Laws in Brass , prescribed were . Nor suppliant Crouching Pris'ners shook to see Their Angry Judge ; but all was safe and free . For they tell us , that at that time all things were common , and that the Terms of Mine and Thine , now too familiar , were not known . So as that the care and thoughts of all Men conspir'd only for the good of the Publick , and every one neglecting his own particular concerns , was only solllcitous for the Interest and Welfare of the whole Society . But whatsoever they may talk of this Community , it appears , that from the Beginning of the World , things were , accounted , as of right , belonging to him who was the first Occupant , and that every one did challenge that to be his own , which by his Labour , Industry , or Good Fort●ne 〈◊〉 had got possession of . As it is evident in Abel and Gain● who , tho' they were Brethren , yet had each of them their distinct Families and distinct Possession ▪ for how else could they have offered ▪ Sacrifice to GOD ? Or how could that which was offered in common by them , be accepted and rejected ? Wherefore we must conclude , that every one by an instinct of Nature , out of the love he hears to himself doth affect the Possession of Goods , and is ambitious of a Lordship or Dominion over other things . II. What Dominion is . Dominion is the Power or Right which a man hath ●v●r a thing , to dispose of it , as of a substance belonging to him . Whence it is that a Possessor or Owner , can dispose of the things that are his , as it best pleaseth him , by giving them away , Exchanging or Selling them , and hindring any one ●lse from making use of them , except they be such things as are proper to many , and belong to the City , or some other Society . III. Dominion is acquired originally by occupation of what never belonged to any . There are 2 General ways of acquiring Dominion , vi● . Originally and Deriv●tively . By the former of those ways we acquire the Dominon of a thing ▪ by Occupation , when it did not belong to any one before , but was by the profuse Bounty of Nature exposed to the first Occupant , or him who first challengeth it for his own . For seeing that all things , at the Beginning , were produced for the Good of Men , and therefore may fall under then Dominion , it was ordered by a just Right , that things should be his who first claimed them , and that he should safely enjoy them , who had got them into his possession before all others . Wherefore , because under this name of Occupation , are understood Fowling , Hunting and Fishing ; the Birds of the Air , the Beasts of the Earth and Fishes of the Sea , according to the Law of Nations , begin of right to belong to him who first takes them . For what before belonged to no man , that by Natural Right becomes his who first occupies or seizeth it , Justinian Inst. l. 2. de Rer. Divis . IV. By Occupation of what the Owner hath relinquisht . Things also may be acquired by Occupation , if they be derelinquisht by the Lord or Owner , with the design of never esteeming them for his own any more , and consequently ceaseth to be L●rd over them . But the case is not the same in ●hings which during a storm , are cast into the Sea , with a design to lighten the Ship ; for these do still continue to be the owners ; because it is manifest that he did not cast them overboard , because he had a mind to be rid of them ; but that by the casting of them into the Sea he might save the Ship , and consequently his Life . V. Dominion is by sever●l ways Derivatively acquired . The second way of acquiring Dominion is , either by Tradition or Delivery , as when a thing passeth from one to another . For nothing is more conformable to Natural Equity , than that his Will should stand , who has a mind to translate the Dominion of a thing that belongs to him , to another . And therefore of whatsoever nature a corporal thing may b● , as the Lawyers say , it may be passed over to another , and being thus past over by the Lord or Owner , it thereby becomes alienated . Or by Emption or Purchase ; and things so acquired , by paying unto the Seller the sum agreed upon , or satisfying him some other way ▪ as by Promise or giving him a Pledge . Or by a hare signification of ones Will ▪ as if a man who hath lent , let , or deposited any thing with me , should afterwards sell me the same , or bestow it upon me : for in that he suffers it to be mine ▪ Limmediately acquire a right to it , as effectually as if he had by deed past it over to me ▪ Or by Succession , as when a Man dies Intestate , for then all his Goods are devolved to his next Heirs . For it is agreeable to Reason , and conducive to the Peace of Human Society , that what a Man hath in his Life ▪ time acquired by his Labour and Industry , should not be lookt upon as things derelinquisht , and so left to the first Seiser , but that they should be the Heirs of him who dies Intestate , that are nearest in Blood to him . VI. By long Possession or Prescription . There is also another way of acquiring Dominion by long Possession or Prescription ; when a Man hath honestly acquired a thing , and hath possest the same without Interruption , the Term of time set by the Law. Because according to the Law of Nations , that is lookt upon as relinquisht and forsaken , which for so long a time hath not been challenged by any Man. And therefore after the Term appointed by the Law is expired , he who is in Possession is not bound to restore the thing he hath been so long possest of ; but the Dominion or Propriety thereof is devolved upon him , and he may lawfully keep the same , not ●nly in the outward Court , but also in the Court of Conscience , because the Sovereign Magistrate is supposed to have Power for the Publick Good to enact , that after a long continued Possession , the Goods of one Man should be transferred to another , lest continuing so long doubtful , it should perpetually give occasion to fresh suits at Law. VII . The first Law that is to be observed after Dominion acquired . The following Laws seem to have taken their Rise from the acquiring Dominion of Corporal things . The First whereof is , that no body disturb the Possession of another , but that he suffer him with Peace and Quietness to enjoy his acquired Goods : so as not fraudulently to be the cause of any decriment or damage to him , or by any way contribute to the taking of them away from him . By which Law , These , Rapin and other unjust S●bstractions of Goods are forbid . So that not only the violent taking away of another mans Goods must be avoided , but also those which are clandestine , and the Owner is ignorant of . Book . 1. Part. 10. Chap. 32 Lens . Inv. I. Kip Sculp To the Right Worshipfull S r John Leveson Gower of Trentham in the County of Stafford Baronet This Plate is humbly Dedicated by Richard Blome IX . The Third Law. Thirdly , If we have spent any Goods belonging to another , which we honestly came by , then only the Obligation lies upon us , of restoring so much to the Owner , as we have profited thereby ; and if ●e have not profited by them , neither are we bound to restore any thing . The Reason is , because he who is honestly possest of a thing , is not bound to restore the thing , upon the account of any unjust coming by it , since he both came by it and spent it honestly . Nor by reason of the meer receiving it , seeing that no more of it is left . Only he is bound to make restitution , if he be grown more Rich by it , that is , if thereby he have spared those charges which otherwise he would have been necessitated to ; or have something , which otherwise he could not have . X. The Fourth Law. Fourthly , If any thing that belongs to another be acquired by a chargeable Title , it is the duty of the Possessor , to restore the same to its true Lord ; neither hath he any Right , to demand of the Owner , the Mony he hath laid ou● for the Purchase of it ; but can only demand it of him , from whom he hath purchased the thing . Except it be made appear , that in all probability the Owner could never have recovered his Goods without being at some Charges , or that he hath of his own accord promised ●t reward to him , that should find them , or tell him news of them . CHAP. XXXII . Of the Duties of Married Persons . I. Why Matrimony was instituted at first . THE first Divine Institution appointed for the Good of Man , was that of Matrimony , which accordingly hath been celebrated and esteemed in all Nations . For the order of Nature , and the necessity of Life do require , that Men should by Propagation preserve their kind ; and by a continual Succession secure Mankind from utter perishing . Hence it is that Men take to themselves Conjugal Companions , and by means of the said mee●helps , at once provide for their Posterity and Welfare . For seeing that Matrimony is nothing else but the Lawful Conjunction of a Husband and Wife , accompanied with individual intimacy and familiarity ; whosoever enter upon the same , do it with intention of passing the whole course of their lives sweetly and pleasantly , by means of this mutual consent of Souls and Bodies : forasmuch as they would never desire it , but out of an inclination to propagate a Succession , and from hope of the Happiness they shall enjoy in that State. II. All Impurity and Filthiness is contrary to Nature . About Matrimony we are to observe , that this vehement desire of the other Sex , was not put into Man by GOD , for the satisfying of his voluptuousness , which is base and infamous , and always drags Repentance after it ; but to the end that married persons might live more happily together , and propagate Posterity , which is of absolute necessity for the continuation of Mankind . Whence it follows , that it is contrary to the intent of Nature to defile ones self by Lust , and to desire any other pleasures , but what the Nuptial Bed affords . III. There is a kind of obligation upon Man to enter up on Matrimony . Forasmuch as Man is placed in this World , not as an absolute Lord , but only with permission to use and enjoy the things that are in it , without destroying or hurting the substance of them ; an Obligation seems to lie upon him , to enter upon Marriage , that he may render to Nature , what he hath received from her , by begetting Childring to supply the room of his Parents and Ancestors . For Human Society cannot , without great inconvenience , permit the Propagation of Human kind any other way than by lawful Marriage ; all other promiscuous and wandring Lusts being condemned , and punisht by it , whereby either an unjust Heir is clapt upon an Estate , or a Virgin is vitiated . Yet is not every one therefore bound to Marry ; seeing that the Nature of some is repugnant to it , and the habit and constitution of their Body does not comport therewith . But those only who cannot well live without a Wife , or who think they shall be more useful Members of the Commonwealth , by marrying , than if they should continue in a single state . IV. Married Persons are bound to keep the Faith they have pledged to each other . They who are married must stedfastly resolve never to break the Conjugal Bond , by any unlawful Lust ; for by means of the said Marriage knot , the Husband belongs to his Wife , and the Wife to her Husband : so that he who separates them , ought to be lookt upon no better than a Murtherer ▪ and to be as severely punish'd . The Savages , who live in America , do prove this to be a law of Nature , by the keeping of their Nuptial Beds ●●defiled , Adultery being scarcely known amongst them ; and if ever any be found guilty thereof , they have borrid punishments inflicted upon them . And tho' after Marriage the Husband be the Head of the Wife , and that by the Prerogative of his Sex he is to have the Dominion , and that all Domestick Affairs are to be ordered according to his Command and Direction ; yet he is never a whit less obliged to keep his Conjugal Promise , than the Wife 〈◊〉 and if he happen to break the same , he need ▪ not think strange if his Wife take the same course , and write after the Copy he sets her ▪ V. The Duty of a Husband Forasmuch as a House or Family seems to be perfect and compleat in a Husband and Wife , and that the welfare of a Family consists in their Concord and Harmony ; it highly concerns them diligently to mind their Duties . Now the Duty of a Husband is to love his Wife , and to be tender of her , as of a part of himself ; according to that of Genesis , and they two shall be one Flesh . Neither is it sufficient that he make her the Companion of his Bed , but also of his Counsell , lest she should conceive her self to be contemned and slighted , and thereupon , out of Indignation , neglect her Family Affairs . If he admit her into Partnership of a●l his concerns , this will make her chearfully to u●dergo any pains or trouble , and ready to comfort , assist and help him in any occasion of Grief of Mind , Bodily Sickness , or outward Losses . But if a Man hath had the ill luck to meet with an ill natur'd Wife , he ought first of all to use his utmost industry to engage her to her Duty , by sweetness and fair means . And if after all , she continue in her perverseness , he may have recourse to a Divorce , or some other way the Law allows ; or else by Patience endure what cannot be mended , especially seeing that he cannot divulge the faults or his Wife , without the hurt of his Children , the infamy of the Mother , and the disgrace of his Family . VI. The Duties of a Wife . 'T is the Duty of a VVife , not only to love her Husband , but to Honour him , to subject her sel● to his Command , as to her Head and Lord ▪ And because she is more fit for the managing of Houshold Affairs , her business must be to take care of them , and to provide for the Convenience and welfare of all those that belong to the Family . And on either side is required union and concord of Mind and Body , that they may have but one will between them , and never be divided by any difference or contest . According to that of HORACE , Carm. 1. Od. 13. O Happy thr●ee and more , that Faithful Pair , In Bands of lasting Love that joined are ; VVho without Angry Broyls their days do spend , VVhose Love no sooner than their Lives shall end . VII . Matrimony is to be celebrated between Equals . To the begetting of this Concord , it is very conducive , that there be a Parity between the married Couple , and not too great an inequality of condition between them . For seldom are these Marriages found to be happy , where there is a great difference between the parties conjoin'd . Seeing that great disparity of Fortune , Age and Manners , are frequently the cause of as great differences and dissentions : but those above all other are frequently found the most unfortunate , that are contracted between persons of a different Religion . For as TERTULLIAN saith , how can i● be imagined , but that the Faith must be weakned and obliterated , by continual and intimate commerce , with one of a contrary Belief : Wicked Discourse is apt to corrupt good manners , how much more the individual intimacy of Conjugal Cohabitation ? How can a Believing VVife serve two Masters , Christ , and her Unbelieving Husband ? Neither hath a Husband less cause to fear the Snares of an Infidel VVife , which SOLOMON himself , tho' the wisest of Men , could not avoid , and Children also being mostly left to their Mothers care , are in great danger to be inveigled with her sentiments . And what is worst of all , from the different Religions of Father and Mother , as from two Animals of a different Species , monstrous Births are commonly produced , being of no Religion at all , and such as prove unhappy Prodigies in the Church and Commonwealth . CHAP. XXXIII . Of the Duties of Parents and Children . I. Of the Caution that is to be used in Cojugal Cohabitation . FOrasmuch as from the Individual Society , and Cohabitation of Man and Wife Children do proceed , and by means thereof the succession of Families , Kindred , Estates and Titles ar● perpetuated ; it highly concerns Parents , that they behave themselves prudently in the Conjugal Union , lest by their intemperance their off-spring be vitiated . For it was not without Reason , that some have been reproached with this stinging Taunt , Thy Father begot thee when he was drunk . For the Vices of the Parents , are frequently transferr'd to their Children ; and the very temper of their Bodies , is a cause either of the commendable , or nerverse Manners of them . II. The Duty of Mothers . The Duty of the Mother ; is to take care that the Child in her Womb do not come to any hurt , and when Born , that she sollicitously cherish it , and suckle it her self , and that she do not put it out to a Nurse , without urgent necessity . As soon as it comes to the use of reason , she must also endeavour to form its tender and pliable Manners , according to the rules of Vertue and Piety , and to instil into it the first Principles of Religion . III. The Office of Fathers . But because it imports little to have given Life to Children , and thereby to put them into a State , that is indifferent to either Vertue or Vice , except due Instruction be superadded , and the Hatred of the one , and Love of the other be inculcated into them ; it is the Fathers Duty , to take care that they be timely taught , according to his Ability and Condition , and he must omit nothing , that may conduce to their advancement in Learning and Good Manners . If he be able , let him put them out to School , to the end that being out of their Mothers sight , and rid from her fondling of them , they may mind their Learning the better : But he must so resign the care of their Instruction to others , as not wholly to neglect it himself , but must have an Eye to the Progress they make , by prescribing what they ought to learn , and judging what may be omitted : Except he be assured of the Ability , Care and Prudence of the Masters , with whom he hath intrusted them . IV. Parents are bound to maintain their Ch ildre . Another Duty of Parents is , that they take care of the Bodily Sustenance of their Children ; and in case they want wherewith to maintain them , that then they take care to teach them such Arts , whereby they may be able to maintain themselves , without being burthensome to them . Neither must only Legitimate Children be maintained by Parents , but Natural also , that is , such as are Born without Wedlock . For according to the Law of Nature , they ought to be provided for by their Parents ; and tho' they cannot be said to be Members of the Commonwealth , yet they are like Warts and Corns , which tho' they be no parts of the Body , yet are fed from the substance of the Body to which they adhere . And therefore l. 3. de inof . Test . Bastards are allow'd an Action at Law , whereby they may oblige their Parents to give them a Maintenance , as well as if they were Legitimate . Book . 1. Part. 10. Chap. ● Lens . Inv. I. Kip Scu To the Right Worshipfull Sr. Robert Clayton of Marden in Surrey ▪ and of the Citty of London Knight and Alderman Lord Mayor thereof Anno Domini 1680 , And to Martha his Lady Daughter of Mr. Perient Trott of London Merchant . This Plate is humbly Dedicated by Richard Blome . Book . 1. Part. 10. Chap. ●3 Lens . Inv. I. Kip. Sc● To the Worshipfull Peter Rycaut of King Stephens Castle in Ospring in Kent Esqr. , only Son and heyre of Collonell Phillip Rycaut , And Nephew to the Right Worshipfull Sr. ●aul Rycaut Knight , Envoy Extraordinary to their Majesties of great Brittaine in Hamburgh ; And to Chorlotte his Wife , Daughter of Sr. Gilbert Gerard Baronet deceased . This Plate is humbly Dedicated by Richard Blome . VI. Children are under the Power of their Parents . Parents by a natural right have power over their Children , for seeing that the care of them is by nature committed to the Parents , they would never be able to exercise the same , except they had Authority over them , to direct their Actions for their Good. And accordingly the best of Parents , do without any injury to them , force their Children to follow their Studies , to behave themselves as they ought , to leave the vicious inclinations of their Nature , and to do those things which for the future , may make them good , and profitable Members of the Commonwealth . Now whilst the Father is in this exercise of his power over his Children , there is besides a great Obligation incumbent upon him , that as he is the head of the Family , he take care also to impart Health and Strength to the rest of the Members of it ; that is , that he recommend Vertue to them by his Example ; and that he excel all the rest by his Life , more than by his Tongue or Instructions . That he deny and force himself , and that like an Eagle he provoke his young ones to fly ; that he curb his Passions , that he may the more effectually excite them to follow the Footsteps of Vertue ; and in a word , that he omit nothing whereby their tender springing Vertue , may thrive and flourish . VII . The Power of Parents over their Children is limited . The power of Parents over their Children is bounded : For it is not lawful for them to kill the Birth of their own begetting in its Mothers Womb ; nor when it is Born , may they neglect , much less destroy it . For tho' their Children proceed from them , and be form'd out of their very Substance , yet are they born in the same condition as themselves , and are capable of being injur'd by their Parents . True it is , that of antient time , Parents had the Power of Life and Death allow'd them over their Children , that they might be the more encouraged to take care of them . But this absolute Power to chastise the Vices of their Manners , that it might not lash out too far , was restrained by Law ; It being taken for granted , that Children are not only born to the Parents , but to the Commonwealth ; wherefore l. 4. ff . de re milit . it is enacted , that whosoever in time of War , shall refuse to send his Son to serve the Common-wealth , or that shall any way maim him , that he may be uncapable to bear Arms , shall be banished . VIII . What are the Duties of Children . The Duties , or rather the Debts which Children owe to their Parents are : First , that they Honour them , with all possible Observance and Obedience , and with an awful Veneration submit themselves to them . For it is their Duty to acknowledge their Preeminence , and their Dominion over them ; from whence the Royal and Civil Power are originally derived . And this Honour is in a twofold manner exhibited unto them ; Inwardly , by the Affection and Esteem they have for them ; and Outwardly , by their Words in Speaking to , and of them with all Reverence and respect ; by Signs and Effects , as by rising up to them , serving them , staving off Harms , and procuring their Good and welfare ; by obeying their Commands , by submitting to their Will in all things , and by undertaking nothing without their Authority and Counsel . IX . Children are bound to maintain their indigent Parents . In the Second place , Children are bound to succour and relieve their Parents , if they be Poor and necessitous , as being Debtors to them . This is that which Nature teacheth , and which obtains amongst all Men , by the Law of Nations . It is an ancient Law , quoted by SENECA , Controvers . 1. Let Children maintain their Parents , or else be cast into Prison . Because Parents here on Earth , are instead of GOD to their Children , tho' they may labour under Adversity and Poverty . They are as Creditors , to whom tho' they be impious and contemners of the Laws , the Debt that is due to them must be paid notwithstanding . They are like so many Sovereign Princes , whose Actions and Counsels the Subjects may not pry into . And therefore Divines determin , that if a Man should meet with his Father and his Son in the same danger , and that he can only save one of them , he is bound to rescue his Father , rather than his Son. For to this he is bound by the tye of Blood , Reverence and Gratitude he owes to his Father ; since he may have another Son , but cannot have another Father . CHAP. XXXIV . Of the Duties of Masters and Servants . I. The Original of servitude . AFter that Men were multiplied by Generation , Servitude was introduced into the World , and they who were born free , were forc'd to own Superiors . For after that Dominion and Government , was come into the Hands of a few Men , many being compell'd by Poverty , or by the Dulness of their Intellectuals , did proffer their Labour and Service to great Men , upon condition of being maintained by them , and supply'd with necessaries . Afterwards by the occasion of Wars arising between several Nations , and the longest Sword carrying it , it so happened that they who were taken in War , were made Slaves to those who had conquered them . And therefore the Latin word Servus , which signifies a Slave or Servant , is derived from Servo , which signifies to Save , because they were such as in War , were saved alive by the General . § . 3. Just . de Jur. Person . II. How Christians become Servants . But this Custom is antiquated amongst Christians , and it is a received Law amongst them , that no Christians may be made Slaves . Tho' when Christians wage VVar against Infidels , and are taken by them , they make Slaves of them , because this is the Common Law of Nations ; and this Servitude is a kind of Permutation for the Death , to which it was in the power of the Infidels to make them submit . For tho' it be contrary to Nature , to enslave a Man that is born free ; yet it seems consentaneous to Naturalright , that he who rashly takes up Arms against one that is more powerful than himself , and will not hearken to Peace , being taken Captive by the Conqueror , should be obliged to serve him , and be subject to his Command . III. Two sorts of Servants The are 2 sorts of Servants ; the one , of those who contrary to the Law of Nature , are entirely at the VVill and dispose of a strange Lord or Master : Another are such , as let themselves to others for Hire , and give them their Labour for Recompence or Reward . IV. The mutual Duties of Masters and Servants . The Master is bound to pay to his Temporary Hired Servant , the VVages he hath agreed with him for , and be as good as his VVord to him ; as the Servant on the other hand is obliged to perform the VVork and Service he hath agreed to , and diligently effect whatsoever else he hath engaged himself to do . And forasmuch as in this their mutual Contract and Agreement , the condition of the Master is above the Servant , an Obligation ariseth thence in the VVorkman , to carry himself with all Reverence to his Master , according to the degree of Dignity , wherein he is placed above him . If he have not been faithful in performing , what he had engaged himself to do , or not diligent enough in his VVork , that he willingly submit himself to his Correction , to receive the reward of his Negligence or VVickedness . If a Servant either driven by necessity , or of his own accord , have put himself into any ones Service , his Master is bound to provide for him accordingly . Neither can the Ingratitude , or Obstinate humour of the Servant deliver him from his Obligation herein ; tho' for a Punishment of his Offence , he may diminish his allowance of Food , to chastize his negligence or sturdy humour . Yea if he should neglect the Commands laid upon him , and should refuse to go through the work he had undertaken , the Master may withold part of his Wages , which he had agreed with him for . V. A Master is bound to pay for his Servants . A Master is bound to make Good the Damage done by his Servants : Because the fault of his Servant is imputed to be his ; and according to the Lawyers , an Action may be had against the Master of the Bondslave , for any Damage Culpably committed by him : And accordingly the Master must either make good the Damage , or deliver his Slave to him who hath suffered the Damage . Thus the Master of a Ship is bound to make good the loss of it , in case it chance to miscarry in a Tempest , for want of a good Steersman . I added Culpably committed by him , because if the loss happen without his fault , neither the Servant nor Master are bound to make it good , except that it can be proved , that he is grown Richer by means of the said loss . VI. The care of Masters to wards their Servants . A Master must not suffer his Servants to be Saucy or Idle , and if he finds them remiss and negligent in their Work , he ought to reprove and chastise them . If they commit any Crime , he may punish them according to the quality of it , yet not over-cruelly . I call a too cruel Punishment , Maiming , Wounding , or such grievous beating whereby the Lif● of the Servant would be endanger'd , or at least the loss of one of his Members . It is only permitted therefore to a Master , to correct his Servant by a lighter sort of Punishments , as by beating him in such a manner , whence no hurt can redound to his Body . For seeing that Servants are subject to their Masters Chastisement● , they ought to submit to that Punishment , he thinks fit to inflict upon them . VII . Servants can enter into Covenants . Servants notwithstanding the tye they are under , yet can enter into Covenants or Contracts , so that by this means they may be under an Active , as well as passive Obligation . For tho' Servitude do restrain the Power of Servants , and almost deprives them of Civil Rights ; yet it leaves them in full possession of the Law of Nature , which by no means can be abrogated . And accordingly JUSTINIAN tells us , Inst . de Jur. Nat. Gent. & Civil . That Natural Laws which are equally observed by all Nations , are the constitutions of the Divine Providence , and as such do always continue firm and immutable . Whence it follows , that both Servants , and those with whom they have contracted , are in the Court of Conscience bound to the Observation of their Agreements , and the faithful performance of what they have engaged themselves to do . VIII . Servants cannot alienate the Goods of their Masters . Servants have no power to alienate their Masters Goods , no not so much as to give an Alms ; for seeing that no Administration of their Goods is committed to them , and that it is a piece of Injustice to relieve the Poverty of the Indigent out of the substance that belongs to another , it is clear that they cannot bestow any thing upon the Poor ; without it can be probably supposed , that they have their Masters consent for it ; or that the necessity of the Indigent be so extream , that it may seem to plead an excuse for the irregularity of the fact . IX . Servants are not bound to obey their Masters in any thing that is Evil . Servants are not bound to obey their Masters , in those things that are Evil in their own Nature , that is , which are contrary to the Laws of Nature or Nations , or to the Law of GOD , whatever advantage either themselves or their Masters might hope to reap from it . Because we are never to do any Evil that Good may come of it . Wherefore they who either by their command or advice , do intice their Servants or others to Evil , or that put an occasion of doing mischief into the Hands of others , to the end that they may get some advantage thereby , do greatly Sin in so doing , they making themselves guilty of the Crime , who persuade or command it . CHAP. XXXV . Of the Right of Sovereign Dominion , and the different forms thereof . I. When Sovereign Power had its rise . THE Right of Sovereign Dominion , besides what is Paternal , took its Beginning , when Men like Beasts , lived in the Fields , Woods and Caves of the Earth : for being wearied with this irregular kind , they began to think of entring into Societies , and voluntarily divesting themselves of their Liberty , committed themselves to the disposal of the whole Company , preferring the Judgment of the Community before their own . The Power being thus placed in the Hands of the Multitude , they took care for the particulars belonging to it , that the great and powerful might not oppress the weak and needy , and that all the Members of the Society might enjoy the same Freedom of Living . But forasmuch as in process of time , it was found very inconvenient , both as to the deliberating about , and deciding of Affairs , to gather the suffrages of the whole Multitude belonging to the Society ; they agreed that this Power should be setled on one Person only , or on a few . Whence a threefold form of Government took its Rise ; so that now , as TACITUS expresseth it , all Nations and Cities are Governed by the People , or the Great and Chief Men , or by Sovereigns ; so that the Supream Power is sometimes in the Hands of a single Person , or of a few , or in the Hands of the Body of the People . Book . 1. Part. 10. Chap. ● Lens . Inv. I. Kip Sculp To his Sacred Majestic William by the Grace of God , King of England , Scotland , France , and Jreland , Defendor of the Faith &c. a. This Plate in all humility is most humbly Dedicated by Richard Blome When the Sovereign Command is in a single Person , this is call'd Monarchy , because he Governs the whole People , and himself is commanded by none ; as the Kingdom of France , Spain , &c. When the Supream Power is lodg'd in a Council of a few select Citizens , this is call'd Aristocracy ; such as obtains in the Commonwealth of the Venetians . And lastly , When the Command is in the Hands of the whole Body of the People , it is called Democracy , or a Popular Government ; such as is in Holland . Every one of these Forms of Government , hath its own Peculiar and Fundamental Law , which it more particularly insists upon ; Democracy , that of Liberty ; Aristocracy , Security and defence from the Common People and Tyrant ; and Monarchy , Sovereign Power , employ'd for the safeguard of the Publick Good. III. The Worthiness of Monarchy . Monarchy therefore is , when the Supream Power is lodg'd in one Person , on whom all the rest do depend . Altho' this Form of Government may agree with the other two , yet doth it excel them both , as possessing more Advantages than either of them . For Monarchy hath this Peculiar to it self , that it is more free in the Exercise of its Power , and can deliberate and determine without any set Time or Places , it being at the Kings Liberty to Deliberate or Determine at any time , or in any part of his Kingdom . Moreover it is obvious , that in Kingly Government , Counsels are carried on , as well as resolved , with greater Secrecy ; Executed more readily ; Factions and Seditions more easily prevented and crush'd ; and Safety and Liberty , which the other Forms of Government so much affect , doth more abound , and is more lasting than in the two other Forms . IV. In it all things are better administred . If there be any Deliberation concerning the Peace , Union , and the Highest Good and Interest of the People , the Power concentred in One , will be able better and more readily to effect it , than the resemblance only of this Unity in many can possibly do it . Besides , that Form of Government must needs be the best , which most resembles the Eternal and Undivided Government and Empire of Almighty GOD : As also , because he whose Command continues as long as his Life , doth thereby become perfect in the Art of Ruling , and looks upon the whole Body of the People as his own Family , and embraceth and cherisheth them with a Paternal affection and tendermess . V. What a Tyrant is . The opposite of such a Prince as we have now described , is a Tyrant , who either gets into the Throne contrary to the Laws and Customs of the Kingdom ; or , who being lawfully advanc'd to it , doth only mind his own private Good , and fills the Society with Dread , Poverty , and Calamity . He who , contrary to Law , aspires to the Sovereign Dignity , and leaves nothing unattempted to obtain the Kingdom he has in his Eye : He who by the Massacres and Destruction of the People , the Proscription of the Grandees , and the taking away of their Lives , makes his way to the Throne ; without being asham'd of oppressing and grinding the People , or of destroying the Innocent , so he may but obtain what he hopes for . For Monarchy is not always such as it ought to be , but by the Vices of wicked Princes , is often turned into Tyranny . But certainly , the State of a Tyrant , whatever he may think of himself , is very miserable , who dreads those whom he oppresseth , and flees those whom he persecutes , the Fear he puts his Subjects into , recoyling back upon himself . Seeing , that as SENECA saith , it is unavoidable , but that He whom many fear , must fear many . VI. The Defects of Aristocracy . Neither is Aristocracy subject to less Inconveniences than Monarchy ; whilst Wicked Men out of an ambitious desire of Rule , do by unjust Means endeavour to get into the Senate ; following that Maxim , If Right be to be violated , let it be done for the obtaining of Rule and Government . Whilst by the Prevalency of a Faction , unworthy Persons are Elected , and Vertue and Desert postpon'd : Whilst those few that have the Power in their own Hands , do only mind the enriching and aggrandizing of themselves , and without being solicitous for the Good of the Subject , do treat them no otherwise , than if they were their Slaves . VII . The Inconveniences of Democracy . Neither is Democracy subject to less dangerous Distempers ; as when the People in whom the Power is lodg'd , manages the Government in a turbulent and tumultuary manner ; when the more Rich and Powerful part of the People , do oppress and devour the lesser Fry , contemn the Magistrate , violently seize the Goods of others , without having the least regard to those that are Good and Innocent : When they make Laws from an itching desire of Novelty , and soon after as inconsiderately annul them again : When they Enact and Decree that one day , which they abrogate the next ; and exauctotate , what but a while ago so highly pleased them : Or , when Men unfit and of no Capacity , are raised to the highest Charges : And , when Men of an insolent and insulting Temper , do pronounce unjust Sentences , and enact burthensom Decrees , and afterward maintain and execute them by unjust Rigour . CHAP. XXXVI . Of the Duties of Sovereign Princes . I. Knowledge of Affairs is necessary to a Prince . IT is very much for the Interest of the Common-wealth , that He who either by Nature or Chance is destinated to the Government and defence of Society , should not only excel others in Vertue , but also in Knowledge of Business , especially of those which appertain to his Function . For how shall a Man be able to perform that he doth not understand ? Or prescribe Laws to them , whose Temper and Inclinations he is not at all acquainted with ? Wherefore it ought to be his great concern to mind this only , and contemning his Pleasure and Divertisments , to exercise himself in those things which conduce to this end . II. The great aim and design of a Prince , must be the Publick Good. The first thing therefore that is to be minded by him that has the Sovereign Power , is , that the same has not been committed to him for his own sake alone , but for the Publick Good. For as the great End , as CICERO tells us , of the Master of a Ship , is a prosperous Voyage ; that of a Physician , the Recovery of his Patient ; that of a General , Victory : So the End of a Governour , i● the happiness and welfare of the whole Community , that so his Subjects may abound with Riches , be expert at their Arms , Renowned abroad , and Vertuous at Home . III. Vertue and Wisdom is requisite in a Prince . A King will the more readily obtain this End , if he endeavour to excel all others in Vertue and Wisdom , as he is above them in Place and Dignity . For seeing that the whole World are apt to imitate the Manners of their Prince , and his Vertues or Vices , are commonly the Copies his Subjects write after ; it is his greatest Interest to pursue Vertue , and lead a Good Life , that he may not be the Cause of Corrupting his Subjects , and encouraging them to Sin and Wickedness . Besides , how will a Prince ever be able to keep up his Authority and Dignity , if he be accounted Flagitious and Vicious ? Or with what Face will he be able to prescribe Laws of Temperance to others , who lives in the continual breach of the Laws he prescribes ? IV. Piety , Justice , Valour and Clemency , are the necessary Vertues of a Prince . Of all Vertues , none is more necessary to a Prince , than that of Piety , to the end he may obtain of the Great GOD , by whom Princes Rule , Ability and Wisdom for the bearing of the Great Burthen that lies upon him ; as well as that by means thereof , he may more powerfully engage to himself the Hearts of his Subjects , by their being persuaded , that he must needs be the peculiar Care of that GOD , whom he serves with so much Religion and Devotion . He must likewise be adorned with Justice , that he may Administer the Affairs of his Kingdom with Equity , Punish the Wicked , Reward those , who by their good Services have defended or promoted the Interest or Glory of the Commonwealth , and with a constant and unchangeable Will , give to every one his due . He must also be qualified with Valour and Clemency , that by the one he may keep Ill-men to their Duty , and by Fear restrain those who are apt to be Factious and Seditious , and to disturb the Peace of the Commonwealth : And that by the other , he may be ready to Forgive , and gain the Hearts of his Subjects by his Goodness and Benignity . Liberality also is a Vertue that well becomes a Prince , as being of use to him , not only for the obliging and rewarding of his Good Subjects ; but also to acquire the Reputation of Bountiful , which is so generally taking , and so highly esteem'd amongst Men. But yet a Prince must be prudent in the Exercise of this Vertue , so as to make choice of Worthy Persons , on whom to bestow his Munificence , lest by gratifying Base and Undeserving Men , he stir up Envy and Hatred in the Hearts of his Subjects , and expose himself to their Reproaches and Contempt . In a word , There is no Vertue which is not necessary for him , who is plac'd on high to be an Example to others , and whose private Sins , by their spreading Contagion , come to be Epidemical Vices of the whole Commonwealth . For who stands in greater need of Prudence , than he whose Function it is to deliberate concerning things of the highest moment ? Who hath occasion for a more unchangeable Truth and Faithfulness to his Word , than he , who is greater than the Laws ? Who ought to be so qualified with a more resolved Constancy , than he who is entrusted with the Concerns and Welfare of all ? Who wants a higher degree of Continence , than a Person to whom every thing is subject ? Or whom doth Vertue become better than him , who hath all Men to be his Spectators and Witnesses ? V. A Prince ought to be well acquainted with the Nature of his Kingdom . Another Duty of a Prince is , that he be well acquainted with the Temper and State of his Kingdom and Cities : Because the way of Governing is not every where alike , and according to the different Condition of Kingdoms , different Laws are to be Enacted accordingly . In the First place therefore , he ought to know what are the Fundamental Laws of his Kingdom ; whether the Government , to which he is elevated , be purely Monarchical ; or whether it have an allay of Aristocracy and Democracy ? What part the Nobles have of the Government , and what the Commons ? And in the next place he ought to know the Largeness of his Kingdom , the Situation , Commerce , and Strength of it : Who are the Neighbours that bound upon his Kingdom , and what Profit or Inconvenience may accrue to him from their mutual Friendship or Discord . VI. As also with what passeth in Foreign Countries . A Prince also ought to be well informed concerning what passeth in Forein Countries , that he may be the more ready to counterwork and oppose their Designs , to the prejudice of his State. For seeing that Civil Societies are as in a perpetual State of War and Hostility , and that in this State Men are not obliged to keep their Treaties : When one of the Parties gives occasion to the other , to distrust his Faithfulness ; it is highly necessary , that a Sovereign have good Intelligence concerning the Enterprizes and Designs of Strangers against his State , to the end , that if he find they intend to break their Treaties with him , he may not think himself obliged to keep his . And so to be always ready , either for Peace or War. VII . A Prince stands in need of Faithful Counsell or It is a great Argument of the Prince's Prudence , to make choice of Wise Counsellors , Men Eminent for their Honesty , Great Experience , Faithfulness and Prudence . He must also take care , that he be not offended with Truth , if any thing be spoke or advis'd by them contrary to his Mind ; but let him embrace and encourage Sincerity , and contemn and hate Flattery wheresoever he meets with it . VIII . Must have an Eye to the Administration of his Chief Ministers and Great Officers . He ought also to take great heed , that his Officers and Lieutenants keep within the bounds of their Duty , and that they may not be injurious to any . That those who are the Governours of Cities and Provinces , do not enrich themselves by oppressing of the Subjects : That the Chief Commanders of his Army , keep their Souldiers within the bounds of due Discipline , not suffering them to violate the Martial Laws without present Punishment : That the Judges exercise Justice , and render to every one what belongs to them . Of all which things , I have handled at large in my Treatise of the Best Government , to which I refer my Reader . IX . The Duties of a Prince in time of Peace , is to take Care of Religion But forasmuch as the Duties of a Prince do relate either to a Time of Peace or War , we must also treat of them in particular . His first Duty therefore in Times of Peace is , that he take care to promote the Honour of GOD , and encourage Religion and Godliness , and suffer no Innovation in Matters of Worship . By which means he will have GOD to favour him in all his Undertakings , and will engage his Subjects to have a great Esteem and Veneration for him . X. To encourage Arts. In the Second place , he ought to be careful in encouraging and promoting all Arts ; not only those which are surnamed Liberal or Ingenuous , and which are of great Advantage and Honour to the Government ; but others also , which we call Mechanical , and especially those that are of greatest use to the Commonwealth , and bring the greatest Profit and Riches to the Kingdom ; as are those of Agriculture and Navigation , whereof the former furnisheth his Subjects with the Necessaries of Life ; and the latter carries on Trade with Foreign Nations , and is a means of enlarging his Dominions , and bringing Treasure to his Coffers . And what is more , He that is Master of the Sea , may in some sense , be said to be Master of the Land also . XI . To keep and perform his Treaties faithfully and punctually . Thirdly , A Monarch must be careful to observe the Peace , and other Treaties he hath made with other Nations , so as never to suffer the same to be violated . For nothing is more shameful or hazardous to a Sovereign , than to break his Word ; because by this means he teacheth his Subjects , upon occasion , to serve him after the same manner , and to revolt from him . XII . To have an Army always in a readiness . Fourthly , He must make it his business to be always provided of a good Army , to prevent the Faction of any of his Nobles ; or to suppress the Conspiracies or Rising of any other of his Subjects . I understand by Faction , a Company of Seditious Persons , which have united themselves for the carrying on of some design , without the permission of him who governs the State. XIII . To curb all Ambitious and Aspiring Spirits . He must also be mindful to curb and restrain Ambitious persons , and such who have a disposition to Rebel , and to put the State in confusion . For seeing that there are in all Governments , Persons who suppose themselves more wise and able to manage the Publick Affairs , than those who are charged with them , they will not be wanting by all manner of ways to defame and reproach their Conduct ; and not finding their Ambitious desires satisfied in the present state of Affairs , would be ready to overthrow the Settlement , if the Prince were not always in a readiness to oppose and crush their Designs . XIV . To restrain Factions . Fifthly , In case it happen so , that he be not in a condition , to break the grown Faction in his Kingdom , that then he make use of Men esteemed for their Piety and Worth , before that he have recourse to Arms , that by their Authority and Favour they may appease the Minds of these Mutineers , and bring them to Reason . And in case they are stubborn , and will not acquiesce in their Reasons , no● give ear to their Exhortations , that then he resolve to vindicate the Contempt of his Authority by force of Arms , and to crush the Rebellion in the Egg , lest being grown strong , it prove troublesom to him , and render the Sore incurable . To this end it will be very conducive , if the Sovereign take care , by all means , that his Subjects may be eminent for Vertue , and abound with Riches , and be plentifully stored with all the Conveniences and Necessaries of Life , but yet without Excess . For as Physicians tell us , that Diseases are caused by Intemperance or Excess in Eating or Drinking : So the Corruption of Manners , the Contempt of the Laws , and the Insolence of the People , is often caused by the too great affluence of Riches ; except the Prince takes care to prevent it , by engaging the Rich to contribute liberally to the Necessities of the Poor , and by the abundance of their Wealth , relieve the Wants of their Indigent Neighbours . XV. What are the Duties of a Prince in reference to War. But because the Sovereign Majesty , as JUSTINIAN saith , must not only be armed with the Laws , but also fenced with Arms , that he may be in a condition to govern his Kingdom successfully in times of War , as well as Peace ; he is to take care , that he do not engage himself in any War rashly , nor indeed without urgent Necessity . As a Physician , who hath no recourse to actual Cauteries or Amputation , till he hath in vain attempted all other Means : Whether therefore a Prince design to engage himself in an Offensive War against any , or that he resolves only to be on the Defensive , he ought to make an exact estimate of his Force , and duly consider whether he be in a condition to execute the Exploit he intends , or to resist the Force of him that attacks his State. For if he find himself too weak for his Adversary , it will be great Imprudence for him to attack his Enemy , lest by being worsted , he give an occasion to his Adversary to Invade that rightfully , which before he could not do without great Injustice . Wherefore in this case , it will be his Wisdom by Mediation , to prevent the Invasion of his Enemies , and chuse rather to lose something of his Right , than to hazard the Loss of his whole Kingdom . For Right Reason teacheth a Man , to seek for Peace by all possible means , and that he never ought to prepare for War , till he find that there is no hopes of obtaining a Just and Honosurable Peace . But on the other hand , when a Prince , after extream Provocations , hath taken up Arms , and driven the Invader out of his own Kingdom , let him enter that of his Enemy , and endeavour to make them repent of their Folly , and bring them to Reason : But yet so , as that he may do nothing contrary to the Requirings of Religion and Reason . XVI . What a Prince is to do after Victory . After that he hath gotten the Victory , let him take care to spare the Innocent , and those who have not shewed themselves Inhuman and Cruel in the VVars . It is the part of a Man of Valour , saith TULLY , to look upon them as Enemies who contend for the Victory , but to consider those that are Conquer'd , as Men ; to the end that Valour may put an end to VVar ; and Humanity , on the other hand cherish and promote Peace . Whereas , on the contrary , it is perfect madness to destroy those Things or Persons , that do not diminish the strength of the Enemy , nor increase that of the Conquerour : For he who thus inconsiderately and barbarously wastes all before him , doth not look upon the things he destroys to be his own , but to belong to another . CHAP. XXXVII . Of the Duties of Citizens . I. Whence Cities had their Rise . MAN is so great a Lover of Society , and doth so much delight in the Company of such as are like him , that he can scarcely frame himself to live alone . But forasmuch as Society cannot be long preserved without Peace ; and Peace is the Fruit of Union , and Union supposeth Order ; Order , Distinction ; Distinction , Dependance ; and Dependance , Authority : Hence it came to pass , that Men came together , and first lesser Societies and afterwards greater were formed which gave name to Cities . II. The Duties of Citizens are either General or Special . The Duties of a Citizen may be reduc'd to two kinds , viz. General , or Particular . The former of these , take their rise from the common Obligation , by which they are obnoxious to the Civil Government : But the latter proceed from the particular Duty , to the performance whereof every one is bound , according to the calling he is in , or the Function impos'd upon him . The General Duty of Citizens respects either the Magistrate , that is , the Governours or Rulers of the City ; or the Body of the City , that is , the Members thereof . III. It is the Duty of Citizens to Honour the Magistrate . A Citizen is bound not only to obey the Magistrate , but also to be faithful to them , and shew all Honour and Reverence . For it is but reasonable and becoming that he should express his Respect to those , whom he knows do excel him in Dignity . Since Dignity took its name from the latin word Dignus , because they were thought worthy to bear Rule over others , and to take care of the Government . And accordingly it is very agreeable to reason , that those who are subject to their Command , being content with their condition , be Enemies to all novelties or innovations in the State , and acquiesce in their Decrees , rather than in those of any other . That they put a good interpretation upon all their Actions , and be not too curious searchers into their Lives and Actions , but in all things willingly submit to their Commands . IV. The Duty of a Citizen with respect to the whole City . A Citizen peforms the Duty he ows to the whole City , whil'st he prefers the Weal and welfare of it , before his own , and desires nothing more , than that it may enjoy full Safety and undisturb'd Happiness . Whilst he chearfully contributes his Wealth and Fortune for the preservation of it ; being ready to expose his Life to mortal dangers for the Defence of it , and to hazard a Part for the Preservation of the Whole . Whilst he omits nothing , that may serve to advance the Glory and Honour of it , and lays out all the Strength of his Soul and Body , to render it Illustrious and Magnificent . V. How he satisfies his Duty towards his Fellow Citizens . A Citizen dischargeth his Duty towards his Fellow-Citizens , whilst he behaves himself Kind and Benevolent to all , and makes it his business , to maintain and preserve the exercise of Peace , and mutual good Offices between them . Whilst he shews himself Affable and Courteous to all , and difficult to no body , being always ready to succour , help and assist them , whenever any occasion presents it self , or Necessity requires it . For seeing that the Laws of Cities are design'd and intended for the common Good and advantage , every one promotes his own Interest , whilst he endeavours that of the Publick , and takes the ready way to procure his own welfare and Prosperity , whilst he lays out himself for that of the Commonwealth ▪ and every particular Member of it . Wherefore he doth not torment himself , to see the more splendid Fortunes his Fellow-Citizens enjoy , nor the high degree of Dignity to which they are exalted ▪ nor that affluence of Riches wherewith they abound : But remembring himself to be a Member of the City , considers all that to be his own , which he sees the rest of his Fellow-Citizens enjoy . VI. The special Duties of a Citizen . The Special Duties are such as belong to every particular Citizen , or are peculiar to some only . As to the first of these , it is a Duty incumbent upon all , that no Citizen take upon him any Publick Office , or stand for it , but what he is fit for , and able to discharge . For what Man , that is altogether ignorant of Chirurgery , will be so mad as to undertake those Operations , whereon the Life of other Men depend ? Or where is he , that being altogether ignorant in the Art of Navigation , will undertake to carry a Ship to the East-Indies ? But the place is offered me , without any of my own seeking . What then , is it to be supposed that others are better acquainted with my abilities than I my self am ? A Blind Man will never be able to guid and lead the Blind , and he who by his presumption , makes himself the cause of the hurt and damage of the whole Society , draws the Guilt of the Publick Ruin upon himself . VII . The Duty of Counsellours . Counsellours , and those who with their advice assist the Rulers of the City , ought to use their utmost diligence , that nothing may be hid from them , that is conducive to the Good and welfare of the City . They must freely and boldly declare , what they know to be necessary for the safety and flourishing condition of it ; but without being byast by any corrupt Affections , and without being dazled with the Fortune and Dignity , mind only the persons of those they speak to , lest by flattering their Rulers they make themselves vile and contemptible , and by being led aside by their depraved Affections , they dishonour and abuse the Majesty of their Function , and poison and taint the Minds of their Governours . Let them solicitously keep themselves from being corrupted by Gifts and Bribes , and shew themselves upon all occasions , as impenetrable and immoveable as a Wall of Brass , against all the Attacks of the most powerful and insinuating dint of Mony. Let them also be the greatest contemners of Pleasure , and being wholly intent on the good and advantage of the Common-wealth , prefer the safety and interest thereof , before any of their private concerns . VIII . The Duties of Priests or Ministers . Those persons who are dedicated to the Service of GOD and his Worship , must above all things take care to lead an Innocent and Holy Life , and converse amongst their Parishioners with all Gravity , always mindful of the Character they are invested with , and that they are taken from amongst Men , to transact their concerns with GOD ; to be as it were Intercessors with GOD , and Mediators to interpose between Men and the Divine Wrath : That they be careful to avoid all novel Doctrins , and never deliver any thing to the People that is contrary to sound Doctrin , and primitive Christianity . IX . The Duty of Professors . Professors , whose Duty it is to teach and instruct others , must take care that their informations be built on good and sound Principles , and that with their utmost endeavours they avoid Falsehood and Errors . Let them also decline the Perverse Humors of some , who pretending to be free , and engaged to no Mans Opinion , are ready to teach and defend the most opposit Opinions , and to blow Hot and Cold from the same Mouth . They must also be very cautious , that they broach no Opi●ions that are inconsistent with the Peace of Society , or that may occasion any difference betwixt the Citizens . Let them also shun all discord amongst themselves ; and consider that they go the ready way to expose the Respect due to their Function , by being divided in their Sentiments , and sowing the Seeds of dissension and Discord in those places , which should be the seminaries of Vertue and ingenious Literature . Besides , what credit can be given to their informations , if all that they teach be no better than Problems , and where the Affirmative and Negative are equally made void ? Wherefore , it is their Duty to neglect all those Doctrins and Opinions , which are of no use or advantage to the Commonwealth , and derogate from the honour due to their Profession . X. The Duty of Generals or Commanders of Armies . Generals , who are entrusted with the Command of the Forces of the State , ought to take care that the Souldiers that are listed be strong and vigorous , both as to their Age and Constitution , and must provide for their being well exercised and versed in Military Discipline , and to harden them to all Warlike Labours and Difficulties . As likewise to fu●nish them with Arm● , Offensive ▪ and Defensive ; and a●ove all things provide sufficien● Magazines , and Stores of Provision and Ammunition , that their Designs may not miscarry for want of these necessaries . They must also have Spies at hand , to discover the condition and designs of the Enemy , and by this means be able to choose fit ●●●●sions to set upon them , or intercept their Recruits or Provisions . They must also have an Eye , that their Souldiers be not defrauded of their Pay , by the extorsion of the under Officers , for otherwise they will never be able to restrain them from Plundering and Robbing , nor to keep them from Tumultuous Insurrections . XI . The Duty of Souldiers . The Duty of Souldiers , on the other hand is , that they be content with their P●y , and ab●tain from Plandering and Spoiling , or vexatious oppressing of the Country People , with whom they are Quartered . That they willingly endure the trouble and wearisomness of Marches , and the Labours of the Camp , considering that they do all this for the good and safety of the Publick , wherein their own is included . That they take heed of running Rashly and Headlong into dangers ; as well as of Cowardly declining them , when they are called to face them ; that they never stir from the Post assigned to them , for the greatest danger , and rather choose to dye Honourably , than to live reproached . XII . The Duty of Ambassadors . They who are sent to Negotiate the concerns of the State to Forein Courts , must be persons of a quick Wit , and very Circumspect ; not easily giving credit to Rumors , but being able by their Sagacity to discern vain and false Reports , from true and solid ; neglecting the talk of the Common People , and above all things , taking great heed not to discover any thing , which it is their Masters interest should be kept Secret. Whilst they are in Forein Courts , let them never lend an easy Ear to the Suggestions of great Men , and be impenetrable by any thing of Bribe or Corruption . XIII . The Duty of Receivers and Treasurers . They who are the Receivers and Treasurers of the Publick Monies , must take heed of oppressing the Subject in their gathering of it ; must not be too exact and rigorous in the le●ying ▪ or by their Ava●●ce exto●● more from their Fel●●●● Citizens , than is their due to pay . When by the Authority of their Superior , they are charged to pay any Sum , that they do it readily , without putting the Expectants to any expence of Time or Mony , before they can receive it : And never defer the payment of any Salary 〈◊〉 Re●ard , tho' to their greatest Enemies , after they have received orders for it . XIV . How long Citizens are under the Obligation of these Special Duties . All these Special Duties Citizens are obliged to perform , as long as they continue in the exercise of those Functions , to which they are annext , and from whence they proceed ; and cease upon their discontinuance , viz. when either the Officer i● put out of his place ▪ or resigns it ▪ or that the Charge it self be discontinued , as be●ng thought no longer necessary . In like manner the General Duty of Citizen ceaseth , when leaving the City , and setling elsewhere , he ceaseth to be a Member of it : O● when for some Crime a p●●son is ●●nis●●t from the Society ; or when bein● taken P●●son●r by a Conquer●● , he i● carried away to a strange Country . ☞ Fol. 177. for Chap. XXVI . Read XXIV . The End of the Institution . THE SECOND PART , VIZ. The History of Nature : IN NINE PARTS . Which Illustrates the INSTITUTION , And consists of great Variety of EXPERIMENTS , Explained by the fame PRINCIPLES . TO THE Most Noble Princess , Frances Teresa Stuart , Dutchess Dowager of Richmond and Lenox , Countess of March , Litchfield and Darnley ; Baroness of Leighton , Bromswold , Newbury , Torbolton and Metheuen : Lady Abigny , and Grandessa of Spain , &c. Descended of the Most Illustrious and Ancient Family of Stuart , and House of Blantyre in the Kingdom of Scotland . Madam , 'T IS the Custom in EPISTLES DEDICATORY to make large Encomiums in Praise of their Patron or Patroness ; I have as Spacious a Field to walk in , and as much to say in your due Praise as any one ; But having found that all such Addresses ( by your Generous Soul ) are stiled Flattery , and declared displeasing to You , I dare not more attempt it : Only Madam , give me leave to acknowledge the many Favours I have received by your Encouragement of my former Books ; and in acknowledgment thereof , I have taken the boldness to select Your Grace the Patroness of this Treatise of the HISTORY of NATURE , and shall be proud of the Honour to have permission to lay it at Your Graces Feet , and to be stiled , Madam , The Humblest of Your Graces Servants , RICHARD BLOME . To the Illustrious Princess Frances Teresa Stuart Dutchess Dowager of Richmond and Lenox &c. a. This Plate & Treatise of the History of Nature is most humbly Dedicated 〈…〉 G. Freman Inv. I. Kip Sculp . The First Part OF THE HISTORY OF NATURE . OF BODIES . CHAP. I. Of a Body Extended . I. The Existence of Bodies is evident to our Senses . THO' our Senses are often mistaken , and being deluded by false Representations , do circumvent our Mind ; yet have we no safer way by which we may arrive to the Knowledge of Corporeal things , than when with their assistance we measure their Dimensions , and by Signs conveyed through our Eyes , discover their Existence : For it is by their Advertisements we come to know , that Matter consists of 3 Dimensions ; and that the Parts of it are capable of various motions , have different Forms , and do diversly affect the Organs of our Senses . For tho' , it may be , what is presented to our Eye , be only such in outward Appearance , and be represented to us quite otherwise than indeed it is ; yet must not we therefore suppose it to be no more than a Phantasm , or some vanishing Appearance , and such as is not to be ranked in the Catalogue of Things ; seeing it is necessary that something that is Bodily , must lye hid under that shell or outward Appearance , and which really is the basis and foundation of the Figure we see ; tho' because of its distance , or for other Reasons , it may not be perceived such as indeed it is , but takes to it self another Appearance , that it may arrive at the Organs of our Senses . II. The Senses are not deceived , as to the Matter or Subject of things . There is no question , but that he to whom a Square Tower , viewed at a distance , appears to be Round , hath something that is Material or Substantial conveyed unto his Organ ; since it is impossible that either a Square or Round Figure should be seen , without any thing to support it , or that might be the Subject of it ; it being a plain Contradiction , that a Mode should be taken from Matter , and exist without it : For indeed if we well consider the Nature of a Mode , we shall find that it cannot so much as be in our Thought conceiv'd as separated from it . For tho' we can have a clear perception of Substance , whether Material or Immaterial , without their Modes ; yet by no means can we conceive those Modes , without the said Substances , since it is their very Nature to affect and diversifie Substances . III. The Opinion of the Ancients about the Nature of a Body . Wherefore the Ancient Philosophers did demonstrate , that a Body consists of a concurrence of Figure , Magnitude and Resistance ; because they found nothing but Matter was extended in Length , Depth and Breadth ; nor any other thing besides it , that could not abide its like in the same place with it , but pusheth it thence , and excludes Penetration . For herein do Material Substances differ from Spiritual , because the former fall under our Senses , carry a bulk with them , and are subject to the Touch. By the word Touch , we do not only understand the Sense so called , which is peculiar to Animals , and whereby they feel External Bodies ; but that more general , whereby 2 Bodies touch one another with their Surfaces , and whereby they are intimately close to one another . For it is the property of Material things only , to touch and be touched , and to be joyned together by a kind of middle Term ; which is so evident , that it cannot be question'd by any that either make use of their Imagination , or perceive any thing by the Senses : As LUCRETIUS in his First Book tells us , That Bodies are , we all from Sense receive , Whose Notice , if in this we disbelieve , On what can Reason fix , on what rely ? What Rule the Truth of her Deductions try , In greater Secrets of Philosophy ? IV. How a Spirit is said to be extended . But some it may be will object here , that a Spirit also is Extended , and yet is is excluded from participating of the Nature of a Body . To which I Answer , That when a Spirit is said to be extended , this is not to be understood according to the threefold dimension of Bodies , which we imagine ; but with respect to its Power and Energy , whereby a Spirit diffuseth its active Force , sometimes through a larger , and at other times through a lesser part of the Bodily Substance ; so that in case there was no Body or Space , a Spirit could never be understood to be extended , that is , to have , or correspond with any dimensions . V. Whether there be any Vacuit●●s in Bodies . The only difficulty that remains to be resolved , is , whether besides the Bodies , whose Nature , we have said , doth consist in Extension , there be any Vacuity in Nature , destitute of all ▪ Matter , which yet enjoys the properties of Longitude , Latitude and Profundity . GASSENDUS , who hath madc it his business to restore the Doctrin of EPICURUS , and hath made himself Famous by raking these Emptinesses out of the Darkness , wherein they had for many Ages been buried , in his Animadversions upon the Tenth Book of LAERTIUS , concerning EPICURUS his Physiology , doth both by Reasons and Experiments endeavour to prove , that there are empty Spaces in the World ; which tho' they do not actually contain any Body , yet are so dispersed amongst Bodies , as to be ready to admit Bodies and contain them . Much after the same manner , as a Vessel is said to be Empty , when it is destitute of any Liquor , which yet it is capable of receiving . For if this Liquor chance to be emptied out of the Vessel , the inward Surface of the Vessel , which before contained the Liquor , must needs remain empty ; except some other foreign Matter come in to fill up its sides , and be commensurate to the Dimensions of the Body that fill'd it before . He confirms his Opinion by the Example of a Heap of Wheat , betwixt the grains whereof many little spaces intervene , which are not taken up by them , forasmuch as their Surfaces appear to the Eye , to be distant from each other , it being impossible they should lye so close together , but that they must leave some Intervals destitute of any Bodily Substance . VI. A Physical , and a Mathematical Body do not differ . But GASSENDUS doth not seem , in this his Assertion , to have warily enough consider'd the Nature of a Body , which doth not only consist in a Physical or Natural , but also in a Mathematical Extension ; and which is of that intimacy to it , that it cannot so much as in Thought be separated from it . So that Extension is Reciprocal with a Body ; and as there is no Body which doth not consist in Length , Breadth and Depth ; so there is nothing commensurate to those 3 Dimensions , but hath also the Nature of a Body . VII . The Distance that is between Bodies , or the parts of a Body , do not prove a Vacuum . But some will say , We find little Spaces betwixt the particles of Bodies , which because of the diversity of their Sides cannot be filled up by them . I grant it ; but will it follow from thence , that those Intervals or Spaces must therefore be Empty , or destitute of any Bodily matter ? For why may they not be fill'd with Air , or some other Matter more subtil than it ? For if the said Parts be distant from each other , and take up different places , how can they be conceived to be distant , or truly said to be so , by means of an Empty interval ? Seeing that according to that Saying amongst Naturalists , Something must always intervene between those things that are distant . For , seeing that Distance , which cannot be found but between things more than one , is a kind of Relation ; and that every such must have a Foundation , it is necessary that the said Relation rest on a real ground or basis : Forasmuch as a Non-entity hath neither Affections nor Operations ; and consequently , that which is Nothing can never constitute the Distance of Bodies . VIII . Possible Repletion is not sufficient to constitute Distance . Neither must we assert with some , that Distance is founded in the Bodies themselves , that are distanc'd from each other , and that Possible Repletion is sufficient to constitute it . For from this Supposition we might lawfully infer , that they are at a Distance from one another , which way soever they are posited or disposed , seeing that the same Foundations do still remain , whether they be distant , or touch one another . Wherefore Distance must be assigned to something that is different from the Bodies themselves ; which seeing it cannot be Immaterial , for that it is unextended , we must have recourse to something Corporeal that must be the Cause of it . IX . Extension is that which constitutes Material Substance . I know very well , that some Philosophers do not approve of our assigning triple Dimension to be a Substance ; they looking upon it to be no more than a Mode , or Accident . For who doth not consider the Extension of a Stick , to be only a Mode of it , and that the Stick is the Subject or Substance which supports it ? But it will be easie to shew , that this Error is only deriv'd from our common way of expressing our selves ; and that it is every whit as absur'd to assert it , as if a Man , hearing some speak of the Royal Palace , should imagine these 2 words to mean 2 things , and that one of them was a Mode of the other , But to the end , that all the difficulty we meet with in this business may be cleared out of the way , we shall only take notice , that such is the Nature of a Substance , that it can exist without a Mode ; whereas a Mode , on the contrary , doth so depend upon Substance , that it cannot exist without it . Now it is apparent , that the Extension in a Stick , can be without a Stick , seeing that there are many Bodies that have not the Form of a Stick , which notwithstanding have Extension ; but there can be no Stick , which is not extended . And therefore it is so far from this , that Extension can be said to be the mode of a Stick ; that we must rather conclude , that Extension deserves the Name of Substance , and that the Being of a Stick is only the Mode of it . X. Nothing that is Indivisible can be conceived to be in a Body . Hence it is apparent how foolishly they Talk , who consider Mathematical Points in an Extended Substance , and will needs have the divisibility of it to be bounded by an indivisible Term or Boundary . For if in any Line , by division we come to the last Indivisible ; that being once taken away , if you divide the other Parts after the same manner , you will at last come to the like indivisible or unextended Terms ; and afterwards having made a like division of all the rest , you will find nothing else in this extended Line , but Indivisible or Mathematical Points : Which is not only contrary to Reason , but also destroys the Notion we frame of Extended Beings . XI . An Objection of the Epicureans . But the Epicureans will Object , That the last Resolution of Natural Compounds , is into the least Natural Bodies or Atoms ; for that otherwise every Body would be divisible into Infinite , which they suppose to be an Absurdity . For that every thing which is Divisible , can only be divided into those Parts , which are actually in it ; and consequently , that if Bodies be infinitely divisible , they must have actually infinite Parts : And so all Bodies will be actually infinite in their Extension , which no Man in his Wits will undertake to assert . Book . 2. Part. 1. Chap. 1 G ▪ Freman ▪ I● I. Kip. Sculp ▪ To the Right Reverend Father in God Thomas Lord Bishop of Rochester , Deane of Westminster &c. a. This Plate is humbly Dedicated by Richard Blome . XII . A Physical Atom , or least Body , is divisible , because it consists of Parts . I intend to give a full Answer to this Objection , in the Fourth Chapter ; but shall here demand of these Defenders of EPICURUS , whether an Atom , which they contend is Indivisible , have any parts ; or whether it be destitute of all parts , and consequently of Extension ? If they affirm the latter , then their Atom doth not differ from a Mathematical Atom . If they affirm the former ( for it cannot be denied , seeing that every Atom is endued with triple Dimension , and hath its particular Figure ) it is obvious to enquire , whether the parts of an Atom consist of other less parts , and so on to Infinity ; or whether at last we must come to the least parts , which admit of no further Division . If they maintain this , they embrace the Opinion of ZENO , and so will be bound to maintain and defend a Mathematical , and not a Physical Atom , which indeed is no better than a meer Fiction ; but if they chuse rather to maintain the other , there is nothing in Bodies that is altogether indivisible , nor any Atom , whether it be called Mathematical or Physical . XIII . GOD can divide a Physical Atom . Besides , an Atom cannot be conceived to have a Figure , and several Angles really and intrinsecally different from each other ; for if so , it could not be Indivisible , and consequently no Atom . For is it not evident , that all those things that can be conceived by different Idea's , and that have a real independent Existence , can also be divided and separated from each other ? And cannot the Infinite Power of GOD , at least , do as much as our Finite Intellect can conceive ? Now our Understanding can conceive 2 Angles of the same Atom under several Notions , and know one of them without knowing the other ; and conceives also that several Angles of the same Atom do subsist independently of each other ; and therefore it is not to be question'd , but that GOD , by his Omnipotence , can separate these Angles from each other . CHAP. II. The Arguments of EPICURUS Answer'd , whereby he endeavours to prove , That there are empty Spaces intersperst between Bodies . I. The Rest , or Motion of Bodies , does not require an Empty space . EPICURUS , who confounds Place with a Vacuum or Empty Space , and supposeth that all Bodies have their residence in those Vacuities , is of Opinion , That except there were such , Bodies would have no places to exist or move in . For since a Place is commensurate to the thing placed , and the hollow Surface of that , must be equal to the outward Surface of this : As also , that Place is accounted Immoveable , and that it is repugnant for it to be removed from its position ; it follows that Place must always continue the same , even after that the Body , which fill'd it before , is removed elsewhere , and successively takes up other Places ; and that therefore it is necessary , that the same be left Empty , and do preserve its Parts immoveable . II. Bodies , where they come , bring their places along with them , and upon their Removal take them away . But EPICURUS was mistaken , in that he supposed a Place to be a Space subsisting of it self , which is equal to the Body placed , in Magnitude , and really distinct from it : For if we precisely have regard to the Notion of a Place , we shall find it to be nothing else , but a certain Respect of the Situation of a Body , to the Neighbouring Bodies about it ; or to others more Remote , from whence it takes its immobility . So that to say a thing is in a Place , or acquires a new Place , is no more than to say , that it attains or acquires such a Situation , with respect to other Bodies . And it is a meer Mistake of the Mind , to imagine a Place to be a certain Capacity or Interval , which Bodies enter into , and leave again ; forasmuch as Bodies do indeed bring their places along with them , and upon their Removal take them away again . And therefore we say , that a Body takes up some space , forasmuch as it is of such a Bulk amongst the other parts of the Universe , and is ranked amongst Material things : And that it quits a place , when it ceaseth to keep its Magnitude , Figure and Situation between such and such determinate Bodies . III. Whether there can be any Motion , without allowing an Empty space . Another Argument , whereby EPICURUS endeavours to establish a Vacuum , is taken from the Nature of Motion . If , saith he , there be no Empty space in Nature , neither is it possible that there should be any motion ; and consequently the whole Universe would be nothing else , but a stiff immoveable Mass , and unable to admit any Bodies into it self . For supposing all Spaces to be full , a Body will be incapable of removing it self from one place to another , but by thrusting another out of its place ; so that if we suppose any Body to be moved , it must of necessity thrust another , at least of equal bigness with it self , out of its place ; and that also must do as much for another , and so it will be necessary to allow a Process to Infinity , except that some Empty spaces be allowed , into which the Bodies that are in Motion may enter , and , as it were , take up new Lodgings . IV. In every Motion , a whole Circle of Bodies moves together . This Argument of EPICURUS might be of some force , if there were no other motion , but that which is made in a strait Line ; and if when one part of the Matter is moved , the other following were moved for ever ; but daily Experience teacheth us the contrary , and that indeed there is another Motion , that is , a Circular , by which a Body , when it is made , doth drive another out of its place , and that again another and another , till it come to the last Body , which enters the place of the Body that was first moved . Now this Circle can be performed without the supposal of any Vacuum . As suppose we the hollow Circle XYZ , fill'd with 12 Bullets , whilst the first of them A moves , it pusheth on the second B , and that the third , till by continual pushing , the place which was left by the first Bullet , be fill'd by the last Bullet C. And thus we see how motion may be without granting any Empty space , to which Bodies might betake themselves . V. An Objection against the Circular motion of Bodies . If you Object with GASSENDUS , that the Bullet A cannot move , except the twelfth Bullet C be moved also ; and that C cannot move , because , in order to its motion , it is necessary that A do possess the place of B , which as yet is not conceived to be empty , and that therefore as long as B continues unmoved , neither can A be moved ; and that consequently all the Bullets contained in the Circle will continue unmoved . VI. The Objection Answer'd . I Answer , That this Objection of GASSENDUS is built upon a false Supposition , whilst he imagins that the Bullet C cannot move , except there be some Empty space whereto it might betake it self , when it begins to move ; since it may so happen , that at the same moment when A enters the place of B , C may leave its former place ; so that whilst the Bullet A passeth towards B , it pusheth B forwards , and B that which is next to it , &c. unto C , which at the same instant enters the place left by A. The thing will be more evident in a Grind-stone , or in an Iron Circle , which is moved about its own Center ; for since every part of it doth at the same instant possess the place which is quitted by the fore-going , we see there is no necessity to have recourse to a Vacuity . For if this may be done in an Iron Circle , why may it not as well be done in another , partly consisting of Wood , and partly of Air ? Why may not the Body A , which we suppose to be Wooden , push the Body B , which is Airy , out of its place , and B again that which is next to it , and that again another till it come to C , which will take up the place of A , at the very same time that A quits it ? The same may be illustrated by the Circling of the Water about a Ship under Sail. VII Why Water sometimes mounts upwards . Accordingly we find , that as much Liquor as runs out of any Vessel , so much Air must of necessity enter into it ; and except there be an open vent for the Air to enter , it will be in vain to endeavour to draw the Liquor out of the Vessel ; because wherever this Circular motion is hindred , it is impossible for a Body to remove out of its place . Thus when the Air is drawn out of a Pipe , the other end whereof stands in the Water , the Water immediately mounts upwards , notwithstanding that that motion is contrary to its Gravity . VIII . All Bodies move together , tho' it be in an Unequal Circle . And that it happens thus in every Circle , is easie enough to be conceived , especially where this Circle is supposed to be perfect , so that all its Parts are at an equal distance from the Center . But the same doth not seem to happen where the Circle is unequal , and whose Spaces are different in breadth and narrowness , as appears in the Circle EFGH . But this Difficulty is easily solved , if it be consider'd that all these Inequalities may be compensated or made up by swiftness of motion . For suppose we the Space G to be 4 times broader than the Space E , and double as broad as the Space F and H , it must necessarily follow that the matter must move 4 times more swiftly at E , than at G , and twice as swift at F and H ; and thus , because the swiftness of the motion makes amends for the narrowness of the place , there will in the same Space of Time as much Matter pass through one part of the said Circle , as through the other : So that there is no necessity at all to feign Empty spaces , or to admit of Condensation . IX . It is not necessary , that all Motion should be C●rcul●r . But when we say that Bodies move in a Circle , we must not be so understood , as if we suppos'd that all motions were either Oval , or perfectly Circular ; but only that they are called Circular , because the last Body which is moved by the impulse of another , doth immediately touch the First Mover ; tho' the Line which is described by all the Bodies that are moved , by the motion of that one B●dy , be very crooked and irregular . X. How it comes to pass , that a little round piece of Leather wetted , is able to lift up an heavy Stone . From what hath been said , an account may be given of that Experiment so common with Boys , viz. how it comes to pass that a little round piece of Leather is able to lift up a great Stone ; the Reason whereof is , because the Stone A , hanging on the String B , by means of the Leather C , to which it cleaves or sticks fast , cannot fall down from the Leather , without the Air that is under the Stone be first driven out of its place , and come into the place of the Stone , under the round bit of Leather : But forasmuch as before the Stone can fall down from the Leather , there must be a slit or opening between the Stone and the Leather , before there comes to be a greater Interval between them , capable to receive or admit the Air , as being thicker and more expanded , because of the intercurrent Aethereal Matter ; it so happens , that because the Circle of Bodies is hindred , the Stone of necessity must stick so long to the Leather , till the Air be driven away from under the Stone , and get in betwixt the Leather and the Stone . XI . Whence the Difficulty we have to conceive the Motion of Bodies , in a Space full of Bodies doth arise . The Difficulty we have to conceive the motion of Bodies where there is no Vacuum , proceeds from a Supposition we have taken in , that GOD at the Beginning divided Matter into Equal parts , Round , Square , Triangular , &c. According to which Conceit , we cannot imagine how possibly they could move , without leaving Empty spaces between them . And indeed , granting this Supposition , it could not be otherwise : But indeed we must go upon a quite contrary Hypothesis , and conceive that GOD at the Beginning , divided the Matter into Unequal parts , infinitely differing in Bulk and Figure ; which suppos'd , it will be easie to comprehend that a Body may move where there is no Vacuum , but all full of Bodies , as well as in a Vacuum ; for let it be Square , Round , Oval , or of any other Figure whatsoever , the Spaces which are between it , and the Bodies that surround it , will not be empty , because there will be always Particles of Matter Subtil enough for to enter and fill them , and besides will be endued with sufficient agitation to break them ; and by breaking of them , reduce them to Figures proper to fill the places they are to enter . CHAP. III. GASSENDVS his Experiments examined , whereby he endeavours to prove , that there are Vacuities in Bodies . I. Gassendus , his Experiment drawn from a Wind Gun , to prove a Vacuum . THere is no question , but that Experiments are the best Proofs of Philosophical Truth , and that those Principles are most likely to be true , which are built and founded upon Natural Phaenomena , and have them to be the Witnesses of their Evidence . And therefore it is that GASSENDUS endeavours to prove the Existence of Empty Intervals in the World , by Arguments drawn from Condensation and Rarefaction . Suppose , saith he , a Wind-Gun , and that the Bore that contains the Air is of the length of 2 Fingers ; there is no question , but that as much of the Air is therein contained ( if no Empty Spaces be intersperst between the Parts of the Air ) as the place , or capacity of the Bore is able to contain ; so that there is no part of the place so little , to which a part of Air , of equal Bigness , doth not answer , and consequently the parts of both must be equal in Number . II. It is repugnant for one and the same Body to be in more places at the same time . Suppose also this Number to be 1000 , then let the Air be compressed with an Instrument fit for that purpose , and by that means be reduced to the measure of a Fingers length only . What order will these parts of Air afterwards keep , when at that time , of the parts of Place , there are not above 500 left ? Or shall we suppose that 2 Bodies are crouded into one and the same place ? This is repugnant to the Laws of Nature , since Impenetrability is the Property of a Body ; and it is as much a Contradiction for 2 Bodies to be in the same place , as for 1 Body to be in divers places . Wherefore if the Particles of Air , contained in the Bore of the Wind-Gun , be shut up in a more narrow place , it is necessary that their Sides and Angles should be more closely lodg'd , and fill up the Intercepted Empty spaces ; which being once fill'd , it cannot be thought strange , if by this means the Interval be made so much the lesser , and less protuberant than it was before . III. The true Reason of this Experiment given . But GASSENDUS in alledging this Experiment , doth not seem to have heeded the Proceedings of Nature ; for tho' naturally Penetration be repugnant to Bodies , yet must not we inferr from thence , that there are Empty spaces in Bodies , which may receive the ambient Air , or contain any other Matter ; seeing that it is very possible , that amongst the thicker parts of Air , there may be some more Subtil matter , which coming forth from the Pores of Bodies , may make that the Space which seems to be fill'd , may admit other Air. Because the Air that is thrust in by force , doth drive out the Subtil matter ; which giving way to it , doth break forth through the Pores of the Gun. Wherefore the Compression of the Aiery parts doth not proceed from the filling of the Empty spaces , but from the Expulsion of the Subtil matter , which gives way to the parts of Air ; whilst they come nearer together , and either make the Pores less , or quite take them away . IV. From the Nature of a Body . For this is a Consequence which is deduced from the Nature of a Body or Matter , that when a Body appears under a less Bulk than it seemed to be of before , tho' it doth not appear that any part hath been taken away from it ; we must conceive that some very Subtil matter is come forth from the Pores of that Body , and thereby have made the Parts come closer together , and reduced the whole Body to a less compass . V. What an Aeolipile is . The next Experiment produc'd by GASSENDUS , is that of an Aeolipole , which is an Instrument made of Copper , or of some other Metal ; the whole hollow whereof is at first fill'd with nothing but Air , which becomes so dilated by being set near to the Fire , that the greatest part of it , breaks forth from it through the Hole D , which Hole is afterwards plung'd into a Vessel full of Water ; and as the Air of the Aeolipile becomes condensed again by the Coldness of the Water , the Water riseth to fill it . This being done , care is taken so to place the Aeolipile , as that the lower part of it may rest upon glowing Coals , which causeth the Water that is contain'd in it to be rarefied into Vapours , the first whereof being push'd on by those that follow them , make their escape together with the Air through the said Hole D , with so much swiftness , that they produce a very sensible Wind , which continues to blow continually , till all the Water be evaporated , or that the Heat do cease to rarefie the Water into Vapours . VI. The second Experiment of Gassendus against a Vacuum , fetch'd from an Aeolipile . Let us suppose therefore the Aeolipile ABC DE , and one part of it ABC , to be fill'd with Water , and the other AEC with Air : Now the Enquiry is , how it can be , that tho' the Water which is contained in this Vessel being rarefied by the Fire , do break forth with great violence through the Hole of it ; yet the whole hollow of the Aeolipile , doth still continue as full of Matter as it was before . For if the parts of Air AEC , and the parts of Water ABC , were equal in number before the Aeolipile ABCDE , was put near the Fire to be heated ; the remaining parts , after that some of them have been evaporated , must needs take up more place : And therefore like as a Heap of Dust being toss'd with the Wind , becomes diffused and spread abroad like a great Cloud , because of the Air that is intermixt with the particles of Dust , why may not the particles of the Air and Water contain'd in the Aeolipile , being put into agitation by the little Bodies that have been introduc'd , take up the whole Space , which before was taken up by the intersperst Vacuities ? VII . The Experiment of the Aeolipile explained . But to this I answer , that there is no Consequence in all this , because the parts of Water AB C , contain'd in the Aeolipile , are not therefore dilated , because they take up the Empty Spaces , which before were intermixt with the parts of Air AEC ; but only because the Aeolipile being set upon the Fire , the heat thereof sets the particles of the Water in motion , and makes them to push against each other , and with great striving endeavour to get further from each other . For the Subtil matter , which hath been introduced by means of the Fire , doth distend and dilate their Pores ; so that such as are more closely compressed , and do strive to disentangle themselves , break forth with violence through the Hole D , towards F , and resemble the Blast of Natural Wind. Wherefore the Dilatation of the Water , upon the Surface AC , is only to be attributed to the Subtil matter , which is entred through the pores of the Aeolipile , which agitating the particles thereof , doth not permit them any longer to hang together ; according as GASSENDUS himself doth acknowledge in these Words ; And this by the Activity of the particles of Fire , which being entred into , and most swiftly tossed between the Sides of the Aeolipile , do not suffer the Parts of the Water to rest ; but drives them up and down , this way and that way , so as that they seem to fill the whole Space . VIII . A third Experiment fetch'd from the Dissolution of Salts There is yet another Experiment whereby GASSENDUS supposeth that Vacuities are certainly proved : For he considering that a determinate quantity of Salt only could be dissolved in such a Measure of VVater , and that having taken in as much as it can , it leaves the rest of the Salt undissolved ; this he thinks cannot be solved any other way , than that the Salt being separated into very small particles , doth every way penetrate the VVater , and fill the Empty Spaces that are in it ; which being done● , the further dissolution ceaseth in the same manner , as a Stomach that is already glutted with Food , doth cast up whatsoever is superadded . And forasmuch as the Particles of Salt are not all of one Figure ; for those of Common Salt are Cubical or Four-square , those of Alom 8 Corner'd , &c. Spaces of a different Figure must be assigned to them ; and that there are such , may be easily proved , because VVater already impregnated with common Salt , doth notwithstanding afterwards dissolve and take in Alom , Salt Armoniack and Sugar . Which admission of several Bodies , cannot be imputed to any other Cause , but those Empty spaces which are between the parts of the VVater ; because when they are once fill'd up , the VVater can dissolve no more of these Salts , as having no Vacuities where to bestow them . IX . How Salt is dissolv'd in Water . This Experiment would be of some service to GASSENDUS , if he could persuade us , that the Bulk of the VVater is not at all increased by the dissolving of Salt , and that it takes up the same Space it did before ; whereas indeed daily Experience teacheth us the contrary . For tho' in a Cup full of VVater , a certain quantity of Salt may be dissolved , without spilling any of it , yet not without some spreading of its Surface : For it is evident , that by the putting of Salt or Ashes into VVater , the Surface thereof swells , and jets out in the midst , in the manner of a Globe . As may beseen in a VVeather-Glass , or Glass-Pipe , into which if any Salt be infused , the VVater presently increaseth and mounts higher . X. Why a certain and determinate quantity of Water , can dissolve a certain quantity of Salt only . But you 'l say , If there be no Vacuities in the VVater to admit the particles of Salt , how comes it to pass that it is satiated with a certain quantity of it , and rejects all the rest ? This may easily be answer'd , by supposing that the parts of Salt are stiff and inflexible , whereof those of fresh Water are very soft and flexible . For when the parts of Salt lye athwart one another , they give occasion to the parts of the fresh VVater to run or slide between them , and like Rings to encompass them round , and to dispose them so that they may the more easily glide between them , and continue their motion , than if they were all alone . For the parts of VVater being entangled with the parts of Salt , the Subtil matter , by whose force they are agitated , have no other business , but to carry them swiftly round the particles of Salt , which they embrace . Whereas , when they are alone , and constitute the fresh VVater , they are so confounded together , that the Subtil matter is forced to employ part of its strength , in variously bending and plying of them ; seeing that without the impulse thereof , they continue immoveable , and cannot be separated from each other . Forasmuch therefore as the parts of fresh VVater are finite , and that the virtue they have to move themselves is limited , it must necessarily happen that after they have encompast a certain number of the parts of Salt , they will not be able to overcome the resistance of the rest ; and therefore the VVater being as it were satiated , will not be able to dissolve the superadded Salt ; because there are no more flexible parts of the Water , to surround or embrace the particles of Salt , by winding of themselves round about them , and by that means cause a liquefaction of them . This is manifest in Common-water and Aqua-fortis , which can only dissolve a determinate quantity of Salt or Metal ; so that if after they have received this proportion , if one should but cast in over and above one grain of Salt , it will remain as much indissolved , as if it was laid up in a dry place . XI . The Reason of all Crystallizations . And for this Reason it is , that hot Water that hath run through Nitrous Earth , and thereby become a Lye , by having taken in a quantity of Nitre , being removed from the Fire , and let rest for some time , many of the Atoms of Nitre , separated from the rest , begin to cease from motion , and sticking to the inward Sides of the Vessel , do constitute the wonderful 6 Corner'd Bodies ; whence we may easily apprehend all the Crystallizations of the Chymists , and how they are done . XII . The fourth Experiment , of a Pipe of Glass , fill'd with a certain proportion of Quicksilver . It remains now only , that we endeavour to assign the Reason of that Experiment , which TORRICELLIUS made at Florence , as GASSENDUS informs us ; which take as follows : Having taken a Glass-pipe of 3 Foot long ( according to the description of it in the 17 th Chapter of the 6 th Part of our Philosophical Institution ) 7 Fingers breadth , and 9 Inches long , fill'd with Quicksilver , and having stopt the Mouth of it with his Finger , he dipt it into a Vessel with Quicksilver , and then found that upon taking away of his Finger , all the Quicksilver did not run out of the Pipe into the Vessel , but continued in the Pipe to the height of 2 Foot and almost 3 Fingers breadth , after hahaving made some Vibrations upwards and downwards , and in the mean time leaving the upper part of the Pipe , not only destitute of Quicksilver , but of any other Body whatsoever . XIII . The true Reason of the foresaid Experiment . This Experiment , tho' it be highly esteemed by some , as that which seems manifestly to evince a Vacuum ; yet is it of no account with those who admit pores in Bodies , which are penetrable by the Subtil matter , and take up those places which are quitted by Grosser Bodies . For such is the Nature of the Matter of the First Element , that it doth not only pierce Glass , but even Diamonds and Steel it self , and any other hard Bodies whatsoever . For tho' Glass may seem to be destitute of Pores , yet it cannot be question'd but that it is endued with continual Pores , without any interruption ; which is evident from its Transparency . For when it is in fusion and liquid , the Subtil matter flowing around all its parts , doth form innumerable pores in them , through which the Globuli of the second Element do enter , and diffuse the Action of Light every where . Where tho' that Space in the Pipe , which is relinquish'd by the Quicksilver , seems to be Empty ; yet nothing hinders , but that it may be fill'd with some very Subtil matter , which is not subject to our Sight . Neither was GASSENDUS ignorant of this , who in his Explication of this Experiment doth allow , that the Bodies of Heat and Cold can penetrate into the Hollow of the Pipe. And he holds the same concerning the Light , which he owns to be a Corporeal Substance , and a very thin and Subtil matter which passeth through the Sides of the Glass . Wherefore it is without all Reason , that from hence he endeavours to prove Empty spaces , seeing that in those Intervals that are fill'd with Subtil matter , there is as much room to admit other Bodies , as if it were altogether empty , and without any Body at all in them . XIV . That there is no Vacuity in the Glass-Pipe . Moreover who doth not know , that Nothing is not capable of any Properties ; but if Fire be apply'd to the upper part of the Pipe , we shall find a like Rarefaction to be produc'd there , as we perceive in the Weather Glass , and by means whereof the Quicksilver is driven downwards . When it is very clear , that there is some true Matter there , which is the Subject of this mutation . XV. How the Existence of such a Subtil Matter may be proved . Now such a Matter as is much more subtil than Air , not only PLATO and ARISTOTLE , but all the ancient Philosophers have owned , which enters the pores of all Bodies , and intimately insinuates it self into them : For by means hereof the Juices , which during the Winter season the Earth conceals in her Bosom , being agitated upon the approach of the Spring , do pierce the pores of Plants and Seeds ; but after that the too great increase of Heat hath more dilated the Pores , or that the Cold hath overmuch straitned them ; then the Juice either passeth directly through them , or by reason of the narrowness of the Pores , cannot enter them at all ; and consequently the Seeds or Plants must dye . So that in the whole Vegetation of Plants , we meet with nothing , but a motion derived from this Subtil matter , and proceeding according to certain Rules : So likewise it is an effect of this Subtil matter , that Glass taken out of the Furnace , and set in a Cold place , presently breaks to shivers , because the Pores of the outward Parts are sooner shut up by the Cold , than those which are more inward ; and therefore the greater parts of the Subtil matter that are shut up in them , hinder the Egress of the rest . Neither probably is there any other Reason to be assigned , why Glasses break of themselves . And to this we may likewise add , that it is from this Subtil Aether , that fluid Bodies are enabled to preserve their Mobility , and do presently corrupt , whenever their motion is disturbed or interrupted : For the principal Office of this Substance is , to dispose and incline the Parts of Bodies , and more especially such as are fluid , to the Laws of its motion . Neither can any thing else preserve the certain and natural motions of any Body . Conclude we therefore , that nothing hinders , but that the Subtil matter may enter through the Pores of the Glass , and fill that part of it which the Quicksilver hath left . XVI . The fifth Argument , taken from united Bodies . LUCRETIUS seems to have found out a stronger Argument than all the rest , for the Proof of a Vacuum , which is this : If two most exactly polisht Bodies be apply'd to each other , and touch one another , it will be impossible to remove the one from the other , but that at the same Moment the whole Surface of the one would be removed from the whole Surface of the other . For tho' , it may be , in one part of the said Surfaces they might be more distant than in another ; yet as soon as they began to open , they would no longer in any part touch each other , save in the opposit extream Line : For otherwise the said Bodies could not be smooth and even , but crooked and uneven , which is contrary to this Hypothesis . Which being supposed , let the Air move with never so great swiftness , yet it can only successively pass the Space which is from the utmost Edge of the Surface , to the midst of these Bodies ; and therefore it is necessary , that at that point of Time wherein the Air passeth the Edge or Brim , there must be conceiv'd an Empty space reaching to the midst of the Surface of those Bodies , which is not filled , but during the Consequent Moments of Time. XVII . There are no Bodies in Nature , that are exactly polisht . GASSENDUS takes this Argument to be convincing , and that it doth not admit any Answer ; but if we well examine what it supposeth , we shall discover it to be false and without any ground . For it supposeth 2 Bodies exactly polisht , when himself ( Phys . Sect. 1. Lib. 6. ) denies , there can be any such : For tho' Marble , Iron , Wood , and other such like Bodies , in which we can perceive none of the least unevenness , neither by our Touch or Sight , seem to be most exactly polisht ; yet Reason will tell us , that they must of necessity be very uneven , because all this polishing is the effect either of Grains of Sand , or of the Prominencies of Files , which cannot but leave Cavities , and consequently an uneven Surface behind them . And therefore it is not at all probable , that there can be found any 2 Bodies so even , hard and perfectly polisht , as that no Air should be intercepted betwixt them . But if ever 2 Bodies exactly polisht happen to be joyned together , then can they not be separated by pulling the one of them upwards perpendicularly , but it will be necessary to draw the upper Body away Sideling , and by this means the separation of these Bodies is performed , not in a moment , but successively ; so that the Air doth not easily and readily succeed in the place that is left by them . CHAP. IV. Of the Divisibility of Bodies . I. Divisibility is a Property that agrees to all Bodies . EPICURUS , who asserts that Material Substance is compos'd of Atoms , and to which he assigns the Rise and End of Things ; imagin'd that Bodies were capable of being divided so long , till at last we come to such smallest Bodies , as by reason of their Solidness , do exclude any further division , and by no Natural Force can be any more resolved into Parts , as AUSONIUS hath it : The Principles of all this Building tight , Are very small , and such as scape our Sight ; Consisting all of Ranks of Atoms fit , Which solid are , nor parting do admit . II. Gassendus his Opinion concerning the Divisibility of Bodies . This Opinion GASSENDUS endeavours to defend , deriving his Argument from the Dissolution of Concrete Bodies : For as we see , saith he , that Nature resolves Bodies into exceeding small Particles , and in this dissolution proceeds only to a certain number of them ; so we ought to conclude , that Nature doth not still divide Bodies smaller and smaller to Infinity , seeing that her Force is bounded , and within a short time becoms exhausted , and ceaseth ; and therefore after the utmost of her Activity there must remain Indivisibles , and that cannot admit any further Partition . III. An Indivisible Body is a Contradiction . I know very well , that GASSENDUS doth not attribute a Mathematical Indivisibility to Atoms , but only supposeth them to be Indivisible , because of their Solidity , and the indiscerpible cohaesion they have of their Parts ; but which way soever GASSENDUS may endeavour to explain EPICURUS his Sentiment , Indivisibility seems to be repugnant to the Nature of a Body . For Divisibility is the Property of every Material Substance , and so intimate to it , that it doth immediately and essentially follow the same : For if we carefully heed the Conception we have of a Body , we shall find it to be something Extended , and Commensurate to 3 Dimensions : But how can it be that that which is Extended , and consists of Longitude , Latitude and Profundity , should not be Divisible ? Conclude we therefore , that every Body is Divisible , and capable of an indefinite Division , so as that it can never be exhausted by any Partition whatsoever . IV. Forasmuch as Inf●●te Points a●e assignable in a Body , it must follow , that every Body is infinitely Divisible . This Division is variously demonstrated by Mathematicians : We shall give you one Instance , that may serve instead of the rest . Let us suppose parallel Lines AB and CD , and the same as to their length Indefinite , and a Fingers breadth distance from each other : This suppos'd , the Line EF , which intervenes between the foresaid Parallels , and that perpendicularly , must of necessity be a Fingers breadth long . Then taking the Point A , of the Line AB , which we will suppose also to be a Fingers breadth distance from the Line EF ; let us take above the Line CD , to the Right hand of the said Line EF , as many Points as we please : As for Example , G , H , D , &c. distant from each other at pleasure ; and let us conceive , that from the Point A , so many Right lines do proceed , as to reach to the several Points G , H , D , &c. This granted , it is manifest that the Line AG , will cut the Point I , of the Line EF ; the Line AH , the Point L , a little Higher , and the Line AD , the Point M , which surpasseth the former , or is drawn about it ; and so of the rest . But because the Line CD , is Infinite , and that therefore an Infinite number of Points may be taken in it , it follows , that all the Lines that shall be drawn from the point A , to all the foresaid points , will denote Infinite points in the Line EF , and they different amongst themselves , and which will still more and more approach to the End E , yet so , as that none of all the said Lines will ever pass through the point E ; because it is suppos'd that the Line CD , is parallel to the Line AB . Whence we conclude , that since an Infinite number of Points can be assigned in a certain determinate portion of Matter , that Matter is infinitely divisible . V. How it comes to pass , that all Bodies are not Equal , seeing that all are infinitely Divisible . Some one or other , it may be , will object in favour of GASSENDUS his Hypothesis ; that if it belongs to the Nature of a Body , to be Divisible to Infinity , it will follow , that any Body will be equal to another , which is double its Bigness : But what greater absurdity can there be , than that 2 Bodies of different Magnitudes should be Equal ? and consequently it must be false likewise , that they are both of them Infinitely Divisible . The Major is evident , because there is an Infinite Divisibility in the Smaller Body , as well as in the Greater , which notwithstanding is twice bigger than it . VI. A Finite Mind cannot determine any thing concerning that which is Infinite . This Objection may be answer'd , First , by saying with DES CARTES , in the First Part of his Principles , Article 26 , That we need not trouble our selves too much , to explain or extricate these Difficulties , which are not proportionate to our Intellect , and which cannot perspicuously and distinctly be conceived by us . For it appertains only to Infinite Mind , to understand that which is Infinite , and to determine any thing concerning it . Wherefore it would be a great piece of Folly , to reject the clear Notion we have of the Nature of a Body , as false ; because we are not endued with an Infinite Understanding , and therefore cannot comprehend that which is Infinite . Wherefore also DES CARTES considers all those things wherein we can perceive no Bounds of Extension , not as Infinite , but as Indefinite ; because they can be indefinitely divided , and we can never come to the last part of them . VII . Two Bodies of different bigness , may be divided into as many parts the one as the other , tho' not into as great parts . Or , Secondly , we may give this Answer to the foresaid Difficulty , that the Divisibility which is in the lesser Body , is not so much as that of the greater Body , which is twice as big ; that is , the lesser Body cannot be divided into Parts , that are as big as those into which the gre●ter is divisible ; but yet it may be divided into as many ; because Bodies are not said to be Divisible with regard to their Continuous Quantity , but with respect to their Discrete Quantity ; for the Thousandth part of one Body may be divided into other 1000 parts , no less than the whole Body : Forasmuch as the Divisibility of a Body , or its aptitude to be divided , is not diminished by actual Partition , no more than the Faculty of Writing or Painting grows less in a man , whilst he writes upon Paper , or paints upon a Board or Cloth. VIII . There are innumerable parts in the Body of a Mite . It will seem a Paradox to some , that there should be as great a number of Parts in the little Body of a Mite , as in that of a Horse , an Ox , or an Elephant ; yet if we will be pleased to make use of a good Microscope , we shall find that the Body of a Mite is every whit as Organical , as that of the most bulky Animal ; for we find it hath a Bill , with a long Trunk , wherewith it pierceth the Skin , and draws Blood thence for its Aliment . It is seen also sometimes to cast forth Dung , of the bigness of a Flea ; besides which many Asperities may be perceived , as well on the outside , as on the inside of its Skin , and 2 branching Horns on its Forehead , and 6 Feet on each side , like to those we see in Crabs , long-wise extended from the sides of it , 2 whereof support the fore-part of this little Animal , and the other 4 the hind-part . But tho' all these outward parts of this little Animal be considerable for their number , yet are they but very few , if compared with many parts which lye hid in the inside of it . For it must have a Stomach , Guts , a Heart , a Brain , wherewith to perform the Functions of Life . It must also have Veins , by which its Aliment may be conveyed throughout all the parts of its Body ; Arteries , to conveigh the Vital Spirits ; and Nerves , to convey the Animal ; besides , Muscles , Tendons , Joints , and innumerable other parts conducive to its Nourishment ; Sensibility and Capacity of moving it self , and exerting all the other Functions of Life . All which Parts , tho' they be very small , yet are they no less divisible than those which are much greater , because they are extended , and separable into Parts . IX . GOD can produce Animals infinitely lesser and lesser , than others . Wherefore seeing that the Demonstrations concerning the Divisibility of the Matter are clear and evident , we may assert , that there may be Bodies , yea , and Animals too , still less and less than others , and that into Infinity , tho' our Imagination can frame no Conception of them : For why might not we say with ●ufficient certainty , that all Animals are in little in their Seed ? Seeing that we see in that which we call the Treadle of an Egg , ( which was never set upon ) a Chicken , which for ought we know , is entirely formed ; and that we see whole Frogs in the Spawn of Frogs . It is also very probable , that in the Bud of a Mustard-seed , and of the Kernel of an Apple , by Example , there are infinite Trees ; because it not only contains the Tree , whose Seed it is , but also a vast number of other Seeds , which it may be , contain within them also other Trees , and other Seeds ; which other Seeds do probably contain still other and more Trees ; and other Seeds , as fruitful as the first were , and this to Infinity . X ▪ The Bodies of all men mor● produced from the Beginning of the World. Neither may we only conclude , that Plants are contained in the Buds of their Seeds , but that all the Bodies of Men , and of Animals , that shall be born for the future , even to the end of the World , probably were produced from the first Beginning of the World : I mean , that the Females of the first Animals , have probably been created , with all those of the same Species , which they have already brought forth , or shall do to the end of the World. CHAP. V. Of Loose and Close Bodies . I. A Sponge becomes distended and swell'd by Liquor . A Sponge , by letting in of Water , or any other Liquor , swells and is pufft , and ●preads it self into a larger Bulk . Some suppose that a Sponge is rarefied by the increase of some new Quantity ; as if nothing of Foreign Matter did enter into it , but only that some ●upervening Quantity doth separate the parts of the Sponge , and increaseth its bigness . But who can believe that when Water is rarefied , and in a manner turned into Air , it is only thus dilated by the increase of new Quantity ? Who perceives not that the Sponge sucks in Moisture , and hides the same within it self , which afterwards upon the squeezing thereof , runs out again , whereupon the Parts come closer together . A Sponge therefore becomes rarefied or dilated , when the parts of it are somewhat removed from each other , and that the Pores of it are fill'd with supervening Water . And the same Sponge again grows close , when its Parts are brought nearer together , by the Expulsion of that Matter , which before kept them at a greater distance . So that a Sponge may not only be said to be a Loose Body , whilst it is dry and free from all Moisture ; but also , and more especially , when it hath all its Pores fill'd and stufft with Foreign Bodies . II. Why some Bodies are more apt to be rarefied than others . Glass becomes dilated to a greater Space by Heat , than Metals ; and of Metals , Iron is more dilatable than Copper ; Copper , more than Silver ; Silver , more than Gold ; and Pewter more than Lead . The Reason of all which must be fetch'd from the greater Porosity of those Bodies that are more light than others ; for the more Pores there are in any Body that is capable of being Rarefied , the more Bodies may insinuate themselves into it , and by this means it becomes rarefied or distended . III. The motion of Rarefaction is more intense at the beginning . The Curious Searchers of Nature observe , that the Motion of Rarefaction is more intense at the beginning , and more slow and remiss towards the end thereof . They produce several Experiments to prove this ; and more particularly from that of Weather-Glasses , exposed to the Heat of the Sun , uniformly , and continually applied to them ; or set in Water that is kept in the same degree of Heat . The Reason whereof is , because Rarefaction being caused by the admission of some thin Substance into the Pores , the more the said Pores are dilated by the violent ingress of new Matter , the more the Parts of the Body rarefied become distended , and therefore do still more and more resist and oppose any further distension . IV. What is the Reason that Gates and Dores do easily shut in dry weather , and more hardly in Moist and Rainy . Gates and Doors frequently cannot be shut or opened , in Moist weather , without some difficulty : Whereas the contrary happens in the Boards whereof Barrels are made , which when expos'd to the Air in Dry weather , do open and make the Vessels to become leaky . The Reason is , because Gates or Doors do swell in Wet weather , for that the Water , or the Air fill'd with watry Vapours , penetrates the Pores of the Wood , and distends the Sides of them , which being dilated , the whole Bulk of the Body must needs be distended likewise , and take up a greater Space than it did before . In like manner Linnen-Cloth is rarefied by the Accession of Water , Water by that of Air , Air by that of Aether , and Aether by that of a more subtil Body , if any such there be , and by this means take up more Room than they did before . V. Why the Strings of an Instrument do swell by the Moistness of the Air. Thus also the Strings of a Violin , or other Instrument , do swell in Moist weather , as appears by their breaking , and by the difficult winding of the Pegs . In like manner wooden Bowls are apt to get Slits , if they be put into Water , and the Water penetrate them . Some very credible Authors relate , that Earth taken up from those parts that are near to the River Nile , do increase every day in weight , from the time when that River begins to swell , until it be arrived to its greate●t height . Which cannot proceed from any thing else besides the Air ; which being condensed at that time , and clogg'd with watry Particles , doth increase the weight of the Earth . VI. How an Obelisk , moved out of its station , was put to rights again . By the same means an Obelisk at Constantinople , which was got out of its place , was put to rights again ; for the Artificer , who had undertaken the Work , having caused very strong and thick Ropes to be tied to the Obelisk , and fastned to some strong Hold fast , caused the said Ropes to be moistned , by pouring great quantities of Water upon them , which causing them to swell , and consequently shortning their length , lifted up the Obelisk to its former situation upon its basis . For Ropes , consisting of long and twifted Threads , by admitting the Moisture into their Pores or Intervals , the more they swell in thickness , the more contracted their length is . VII . How Milstones are separated from the Rocks , whereof they were a part . It is after this manner that Mill-Stones are separated from the Rocks . For they make abundance of Holes about the said Rocks , into which they drive wedges of Wood that have been dried in an Oven ; which Wedges being placed around in the form of a Cylinder , according to the bigness that we would have the Mill-Stones to be of , when Moist weather comes these Wedges swell , and by their swelling separate the Mill-Stones from the rest of the Rocks ; so that it is evident , that this Separation is made by the Vapours , which would be very difficult to perform any other way . VIII . VVhy the Staves of Barrels are contracted in hot and dry weather . The Staves of Barrels take up less room in Dry weather ; for seeing that their Parts are agitated by Heat , some of them fly away into the Air ; which being gone , it is no wonder if the rest come closer together , and do not take up so much place as they did before . IX . A Bar of Iron put into the Fire , swells and becomes dilated . Take a Bar of Iron , for Example , of 2 Foot long , and a Stick or piece of Wood of the same bigness ; then put the Iron Bar into a strong Fire , till it be red-hot , and then compare it with the piece of Wood which was of the same dimensions with it , when it was first put into the Fire , and you 'l find the Iron to have been increased , not only in Breadth , but in Length also , and in both to exceed the Piece of Wood which was equal to it before ; but as soon as it is grown cold , we shall find it restor'd to the same dimensions it had before it went into the Fire . The Cause whereof is the subtil Body , which enters the Pores of the Iron , viz. the particles of Fire , which dilate it to a greater Extension . For the parts of Fire being in continual motion , must needs distend the Sides of the Iron Bar ; which when expos'd to the Air , and being cooled , returns to its former Extension , because the particles of Fire leaving its Pores , and those of the Air entring into them , and not being moved with the swiftness and violence that those of the Fire are , they do less distend them , and consequently the Bar of Iron must take up less room than it did before . X. Why a hot-Iron cuts Glass . Hence also it is , that with a Red-hot Iron , or with a piece of Packthred dipt in Brimstone and set on fire , Glasses are cut ; because the particles of the Glass being agitated by the heat of the Fire , require a greater Space , and consequently drive their contiguous Parts further from them . And it is for the same Reason , that Metals in fusion swell , and take up more room than they did before . XI . Water rarefied into Vapour , takes up an hundred fold larger Space , than it did before . Water , by the virtue of the Sun , is lifted up into the Air , and becomes thereby so diffused , as to take up a greater Space than it did before ; for if we may believe the account that some give us , Water turned into Vapour , fills a Space 100 times larger than that was which it took up before . The Cause of which Diffusion is not to be attributed to the parts of Water , as some falsly do imagine ; since it is impossible that the Dimensions of a thing should be increased , except that some other Body be added to it . And consequently the Water becomes dilated , when its Parts remove farther from each other , and so give way for the entring of some Foreign Body between them . After the same manner as when a Heap of Dust , by the Wind is lifed up , and dispersed in the Air : For this Expansion is not to be attributed to the particles of Dust ; but to the Air , which fills the Intervals between them , and separates the particles of Dust from each other . XII . Why Bodies that are condensed , become of a white Colour . Condensed Bodies , and such as after Rarefaction are reduced to a less Room , are commonly of a white Colour ; as Butter , Grease , Oil , and such like . The Reason whereof is , because in Condensation those particles are expell'd , which swell'd the Grease or Oil into a greater Room , whereupon their parts must needs come closer together , and be contracted , as it were , into small round Pellets , which afterwards , like so many round Looking-Glasses , do reflect all the Light , and produce a white Colour in the condensed Subjects . For there are two things especially , by means whereof Bodies acquire a white Colour : The First is , That they consist of little and innumerable Surfaces , disposed to receive and reflect the Light in such a manner , as that it may suffer no loss , either by Refraction , or by the mixture of Shadow . The Second is , That the whole Light which shines upon a Body be reflected , without having any Beams swallowed up in the Pores of it . To the effecting whereof little round Bodies do conduce most ; as will appear , when we come to speak of Heat . XIII . What is the Cause of Fermentation in New Beer or Ale. New Beer or Wine , if it be put into Bottles , doth swell and work with that Violence , that it frequently breaks them . Which Fermentation is caused by the Heterogeneity , or the Diversity of the parts of Liquor ; which cannot unite together , by reason of the variety of their figures , and therefore endeavour to extricate themselves from the Society of each other . And that this is the true Cause of the Fermentation of Liquors , appears from hence , that after these Liquors are separated from their Heterogeneous parts , they are no longer agitated with any such tumultuary Motions ; as is evident in Burning Spirits , Distill'd Water , and the like ; which may be kept a long time without suffering any Change. For the Spirit of Wine being kept closely stopt , is not capable of any agitation of its parts ; but if a little Turpentine be mixed with this Spirit , the parts presently begin to tumultuate , and endanger the breaking of Vessels Hermetically sealed . XIV . Bread made of sprouting Corn ferments of it self . If Bread be made out of the Flower of grown or sprouted Wheat , it will ferment and rise without the addition of any Leaven of Yest . The Cause whereof is , because the stiff and sharp particles of sprouted Wheat do infold themselves ; and , as the Chymists express it , are in their greatest Exaltation : Wherefore , as soon as the Dough begins to grow hot in the Oven , the parts thereof become tumultuarily agitated , and driving the resisting Bodies before them , do in a manner praecipitate them , and by this means the Bread becomes spongy and light . XV. How the Air comes to be condensed or rarefied in a Weather-Glass . Let a Weather-Glass be fill'd with Aqua-fortis ; but so as that when fill'd , there may be some Space left , taken up by the remaining part of the Air , which was before in the Glass , Tube or Pipe : You 'l find that this part of Air , being dilated by a more intense Heat , upon the recess of the Aqua-fortis , retiring it self into the lower Head of the Tube , will fill the whole Capacity of the Tube ; and that on the contrary , by Cold it will be contracted into so narrow a room , as that the whole Tube almost will seem to be filled with the Aqua-fortis . Which Variety proceeds from the continual ingress of new Matter through the pores of the Glass , which doth so rarefie the impure Air contained in the Glass , that by the separation of its particles from each other , it drives the Aqua-fortis , being unable to resist its place ; whereas upon the egress of the subtil Matter through the Pores of the Glass , the particles of the Air coming then closer together again , the Aqua-fortis returns to its former place , being drawn into it by the Air that enters at the lower end of the Glass . And if the weather be very Cold , that part of the Air which is in the upper part of the Glass , upon the recess of the subtil Matter , doth so greatly decrease , as that the whole Glass becomes fill'd with the Aqua-fortis . XVI . Why a Chest-Nut cast into the Fire breaks with a great noise . A Chest-Nut put into the Fire , first swells , and soon after bursts , giving a great Report . Which doth not proceed from any foreign Matter that enters the Chest-Nut , but from the grosser parts of it , which the action of the subtil Matter entring into the Pores thereof , separates from each other , and doth so agitate , that at last they burst the Shell with a great noise . XVII . How a Marble Pillar was broken to shivers . In like manner , a vast Marble Pillar mentioned by CABAEUS , was broken all to shivers , by kindling a Wood Fire round about it : For the heat of the Fire rarefying the Air contained in the Pores of the Marble , makes , that it cannot be lodged in the narrow Room it took up before , and therefore in striving to get forth into a large Space , it breaks and rends the Marble to pieces . XVIII . The vast dilatation of a grain of Gun-powder . This Dilatation of Bodies , is the Cause sometimes that a very small Body becomes diffused into an incredible distension ; as we see in Smoak , Vapours and Flame , which Dilatation is so great , that one Grain of Gun-powder , according to the Demonstration of Joh. Chrysost . Magnenus , when kindled , becomes dilated into a flaming Sphere 3804 times greater than it was . CHAP. VI. Of Hard and Fluid Bodies . I. Whence the Hardness of Stones and Gems does proceed . BOdies are distinguished by Hardness , as Stone , Wood , Whet-stone , Pumice-stone , Gems or Precious Stones ; some whereof are broken with ease , and others not without great difficulty . We account those Bodies Hard , the parts whereof are at Rest together , and are so closely united , as that they are not interrupted by any other Matter moving between them . And accordingly those things are accounted the most hard and firm whose parts are inflexible , and touch one another . And therefore Precious Stones , tho' they all agree in this , that the File will not touch them ; yet some of them are harder than others . For some of them are polisht with white Lead , others with Copper , others with Emery . Thus we find a great difference there is betwixt a Diamond and Crystal , tho' both of them proceed from the same Matter , and grow in the same places ; because Crystal is much more soft , its Parts being not yet firmly grown together , but agitated with various Motions . Whereas the Diamond is much more firm and compact , by reason that its insensible parts do more immediately touch each other , and are more intimately and close entangled by mutual cohaesion . II. A Hard Body suspended in the water moves more swiftly in a Right Line , than the VVater it self doth . When a Hard Body is suspended in the Water , if the Water move in a right Line , the said Hard Body will move more swiftly than the Water following the same Line . The Reason whereof is this , because all the parts of a hard Body have but one and the same determination , and the several parts of the Water , or other Liquor , have every one of them theirs , which greatly retards their motion in a Right line . III. A Hard Body , that swims upon the water , moves more slowly than it . upon the water of a River , moves less swiftly than the River : For tho' all the parts of the Hard Body have but one only determination , and those of the Water have many ; yet is this over and above recompensed , by the less degree of Solidity in the said Body , which is the Cause that it keeps above the water , and so has fewer parts of water to push it forwards , and more of Air or subtil Matter to resist its motion . IV. Why burnt Bricks are more hard than those that are not . Bricks , made of Clay , become harder by being burnt or bak'd in the Fire ; notwithstanding that after their Burning they have larger Pores , and that their parts are further distant from each other . I suppose , that this hardness of the Bricks is caused by the action of the Fire , which not only drives out of their Cavities the parts of water , which I conceive to be long and slippery , like little Eels ; but also all their other fluid Parts , which are not very close joyned together . Whence it comes to pass that these being taken away , the remaining parts come closer together , wherein the Nature of Hardness does evidently consist . V. Why some soft Bodies grow hard . From this new entanglement of the Parts it comes to pass , that many Plants in Brazile , which whilst they stand in the Ground are very soft and flexible , being pluckt up , within a short time after become inflexible and very hard . I remember to have read somewhere of a certain kind of Clay , which as long as it lies at the bottom of Rivers , and is cover'd with water , is very pliant ; but being taken up into the Air grows hard immediately , and becomes very firm and stiff . VI. How Wood comes to be turn'd to Stone . Yea , what is more , we find sometimes that Pieces of Wood are turn'd to Stone , and that by means of a petrifying Juice , which being got into the pores of the Wood ; and the watry parts of the said Juice being exhaled , leaving the Earthy and Stony parts in the Pores of the Wood , impart to it the Weight , Hardness , and other Affections of Stones . For Wood thus changed into Stone , becomes thereby almost 6 times more ponderous than it was before ; and the remaining parts of VVood are so closely entangled and joyned with the superadded Sandy particles , that they can no longer be consumed by the Fire . VII . The way of preparing the Wood , whereof Musical Instruments are made . It is an unquestionable Truth , that Bodies which are agitated with a slow and intestine motion , do in process of time grow more hard and solid . For the Wood whereof Musical Instruments are made , require much time before they can be brought to the highest disposition and fitness for that use , even from the time of 20 to 80 years sometimes . They who make Vessels , and other Utensils out of Guajacum , tell us , that they must let it lye 20 years before it be fully fit for some of their uses . So much time is required , that all the Volatile and watry Particles being exhaled , the solid Parts may come more closely together , and attain that fit firmness and dryness which is necessary for them . VIII . How Water , Broath , Blood , &c. become hard . VVater becomes congealed into Ice ; Broath , Blood , and the like into Jelly , and attain all of them to some degree of Firmness . Which happens , because their Particles , upon the ceasing of the outward agitation hang together , and more closely embrace one another . For Blood and Broath become more firm by the Exhalation of their thinner Parts , the thicker staying behind , which being closely entangled together , are fixed by the rest . The same we experience likewise in Oil of Annis-seeds , which in the heat of Summer continues fluid , and stands in need of a Vessel to contain it ; but at the approach of VVinter , when the Solar Beams do more weakly beat upon the Earth , it becomes a hard Body . So likewise Milk , which of its own Nature is fluid , and doth easily insinuate it self into other Bodies , yet becomes coagulated into Cheese , when the slender , stiff and sharp Particles that are in the Rennet , have penetrated the substance of the Milk , which by agitating the particles thereof , drive the branchy flexible parts together , and by their weight expel the smaller particles of Whey out of their places . Milk also is turned into Butter , when the parts of Cream being agitated by perpetual Churning , are separated from the rest , and by their Branchy particles entangling together , do unite into one continuous Body . IX . Why Water riseth higher in the lesser Branch of a crooked Glass-Pipe , than in the greater . The water which is in a Crooked Pipe of Glass , riseth higher in the less branch of it ▪ than in the greater . Because there are more Lines of Air , that act upon the Liquor that is in the great Branch , than upon that which is in the lesser : Whence it follows , that if the Liquor stop in the great Branch at AB , it will not stay in the lesser at GE , which is level with AB , but will mount upwards towards D where I suppose that the weight of the water , which is above the Level GE , doth compensate or make good the inequality of the pressions of the Lines of Air , which act upon both the Branches . Wherefore seeing that this Inequality is by so much the greater , by how much the Mouth of the little Branch is less , or narrower , because the lesser the Hole is , the less power the Air hath to exert its activity upon it ; therefore the less the Hole is , the higher will the water mount above the Level . This is no more than Experience confirms to us : For when the Pipe is about the thickness of a Quill , the water mounts only the height of 2 or 3 Lines ; whereas if it be so small that scarcely a Horse-hair can enter it , the water will mount the height of 10 or 12 Inches above the Level . X. Salt is dissolved in Water , by the motion of it . Salt melts in Water , notwithstanding that it is more ponderous than Water , and sinks to the bottom . Which happens , because the parts of VVater being in continual motion , do insinuate themselves into the particles of Salt , and having dissolved their connexion , do separate them from one another and spoil their Continuity . For this melting or dissolution of Salt , cannot be brought about without motion : For tho' the Water , which is contain'd within the Hollow of a Glass-Vessel , seems not to move ; yet considering the fluidity of VVater , we must conclude , that some of its insensible Parts are continually moving upwards and downwards , as well as from side to side of the Vessel : By which agitation the parts of the Salt become dissolved , and are separated from each other . XI . How Metals are dissolved in the Stygian Waters . Thus also Metals are dissolved in Acid Spirits , and that within a short time . And for the same Reason it is , that when Oil of Tartar per deliquium is instill'd into these Stygian waters , it produceth a great ebullltion or effervescence . And it is for no other Cause , that Bread or any other spongious Body , if it be but slightly dipt in water , is spoiled thereby , than this , that the Particles of the water being in continual agitation , do enter the Pores of those Bodies , and by this means make a separation of their parts from each other . XII . How fluid Bodies come to be hard . Liquid Bodies do frequently become hard and firm : Thus the white of an Egg , by boyling , becomes hard . This Hardness proceeds from the Contexture and Figure of their parts , whereby they are so adapted together , as to cling to one another as it were with Hooks and Holdfasts , so as that afterwards they can no more continue their motion . Thus the most highly Rectified Spirit of Wine , and the Rectified Spirit of Urine , being poured together , joyn and coagulate in the form of Snow . Because the dissolved Sulphur , which constitutes the Spirit of VVine , having insinuated its little Branches into the Pores of the sharp Volatile Salt of the Spirit of Urine , doth so link the parts together , and reduceth the Pores of that Compound to such a narrow compass , that the Matter of the First and Second Element , which passeth through them , is not capable of imparting to those Liquors their ordinary Fluidity ▪ and by this means are reduced to the consistence of a kind of Hard Body . The same effect is also produced by mixing Spirit of VVine with the beaten VVhite of an Egg. And it is for the same Reason that Spirit of Turpentine , after reiterated Distillations , is turned into a hard Body . XIII . How common Water , impregnated with Saltpeter , grows hard . Common-water , that hath run through Earth that is impregnated with Nitre or Saltpeter , and set upon the Fire to boyl , continues as Liquid as ever ; but being removed from the Fire and gr●wn cold , it sets a Mass of Salt , and becomes Crystalliz'd . The Reason whereof is , because the VVater being grown cold , many of those particles of Salt , which were agitated by the heat of the Fire , cease their Motion , and coming closer together , embrace one another ; and by this means are Crystallized , and return to their former figure : Alom yielding 8 Corner'd Crystals ; Salt Armoniack 6 Corner'd ; Sea Salt , Cubical or Square ; Salt Nitre Pyrimidal ; and other Salts , Crystals of other Figures . XIV . How a Sillibub is made . When any Sowr Liquor is poured into warm Milk , immediately the Curds are by this means separated from the VVhey ; as appears in that Drink so familiar amongst us here in England , called Sillibub . This Separation happens , because Milk is not altogether fluid , but is of a somewhat thickish consistence , whose Pores are encompass'd with grosser parts , which are the Curds whereof Cheese is made : And therefore when any sharp or subtil Liquor enters the same , such as Vinegar , Cider , or the like , it drives away the grosser Particles , that fill the Pores , which thereupon joyning together , become separated from the VVheyish part . The same also happens when Milk is kept so long that it turns sowr ; for then , without the assistance of any Rennet or foreign Liquor , it is precipitated and falls down to the bottom , especially if it be set near the Fire ; because when Milk grows stale , it s thinner parts become fluid , and being sowred with the warmth , serve instead of sowr Liquor or Rennet , to run the Milk together . XV. Oil cannot be taken out of a Cloth by Water , but well with Soap . Oil cannot be washed out of Cloth with water , but Lie must be us'd , or Soap , which is not so fluid as water , but by its consistence appears to be endued with a far less degree of Motion . The Cause whereof is , because the Parts of VVater , as to their Figure , differ from those of Oil , and therefore cannot penetrate or divide each others Parts : For the particles of Oil are Branchy , whereas those of VVater are slippery , and much in the shape of Eels : For which Reason also they enter the pores of a Cloth stained with Oil , and leave the particles of Oil untouch'd . For Water hath not the force to enter into Oil , or to penetrate into the inmost parts of it , and consequently cannot carry off any parts of the Oil with it . Whereas Lie , because of the Salt that is mixed with it , doth readily perform it ; for the parts of Salt being stiff and inflexible , and therefore like so many Darts piercing into the parts of Bodies , doth easily loosen the particles of Oil , and being mixt with water , easily carries off the Oil with it . And hence it is that Soap is of so great use , for the taking of Spots or Stains out of Cloaths , because it consists of Salt , Oil and VVater . For the little particles of Oil , because of their familiarity , are easily united , which the water extracts by being joyned with the particles of Salt. XVI . What is the Cause of the Rising or Falling of water in a Glass . When any Liquor is put into a clean Glass Vessel , having an even Brim , and fill'd up to the top , the Surface of it appears plain and even ; but not so when the Vessel is only fill'd in part , because then the surface of the Liquor seems to be concave or hollow in the midst . The Cause hereof is , because the Air in the former case doth with an Equal force press upon the Liquor ; nor can any Reason be assign'd , why it should press one part of it more than another . Whereas in the latter case , the Air being whirl'd round about the Glass with water , whilst from abroad it enters into the hollow of the Glass , it is not so much dispos'd to turn its Force towards the Sides of the Glass , as to continue its motion towards the midst of the water ; and consequently presseth the Liquor more in the midst , than towards the Sides of it , which therefore are somewhat higher than the midst , which by the greater pressure of the water sinks somewhat lower . XVII . VVhence water comes to have a round Figure . But if you pour into a Pipe , or other Vessel , somewhat more water than it is well able to hold ; because that part which is ready to spill over the brims of the Vessel , is more expos'd to the Air , than that which is elsewhere ; therefore the Air drives it by its pressure more towards the midst , where is the fittest place for it to swell or rise higher . Thus we see that the water in this Pipe or Vessel swells above its brim , and that the swelling or Rounding thereof comes nearer to a perfect Round in a small or narrow Pipe ; because where the Vessel is very large , the Force of the Air is not strong enough , to overcome the weight of such a great quantity of water . XVIII . VVhy a Leaden Bullet is more easily beat flat upon a Cushion , than on an Anvil . A Leaden Bullet being laid upon a Cushion , or a pendulous Anvil , is more easily beaten flat , than upon an Anvil that stands fast and immoveable . The Reason is , because it is not sufficient to the beating of a Bullet flat , to strike it with a great force ; but it is over and above requisite that this Force continue for some time , that the parts of the Bullet may have leisure to alter their situation : But when such a Bullet is laid upon an immoveable Anvil , the Hammer leaps back almost the very same moment it strikes the Bullet , and so hath not time enough to flat it , as it hath when it can continue longer upon it , as when it is laid upon an Anvil or other Body that gives way to the stroak of the Hammer , and doth not by its Solidity immediately beat it back . Thus the Shin-bones of a Sheep are more easily broke upon the hand , than upon an Anvil ; because the Hand , by giving way to the force of the stroke , assists the breaking of it . XIX . How a Leathern Ball or Bladder is made hard , by the Air that is blown into it . When Air is blown into a Leathern Ball or Bladder , it makes it to become hard , tho' the Air of it self hath nothing of Hardness in it . The Reason is , because the parts of Air that are pent up in a Leather Ball , or Bladder , being unable to penetrate the Parts thereof , are by this means so much comprest , that thereby they are forced to change their figures , and bend like so many little Bows , which endeavour to return to their former and natural posture ; and by this means so distend the Ball , and make it feel hard to the Touch. XX. Liquid Bodies are ponderous , proportionably to their height . Fluid Bodies , that communicate with other fluid Bodies , are Heavy , proportionable to their Height , and not according to their Breadth . As for Instance , Let us suppose a Vessel full of water ABCD ; having 2 Openings or Mouths of unequal bigness E and F , to which are soder'd 2 Pipes likewise unequal , such as G and H. This supposed , if you pour the same Liquor into the said 2 Pipes to the same height , both the Liquors will be in an Equal poise . The Reason is , because their Height being the same , they are in proportion to their Thickness ; that is to say , if the Hole E be double to that of F , there is also twice as much Liquor in the Pipe GE , as there is in that of HF ; whence it follows , that the Liquor of the great Pipe cannot sink 1 Thumbs breadth lower , but it must make that in the lesser Pipe to rise 2 ; nor can that of the lesser sink lower by 2 Thumbs breadth , but it must make that in the greater Pipe to rise 4 Thumbs breadth , which makes an equal quantity of motion on either side , and consequently the water continues in equal poise in both the Pipes . XXI . VVhy a Beam of wood lies unmoved in the water , tho' the parts of the water are in continual motion . A Hard Body , for Example a Beam of Wood , being in the midst of a Pond , continues unmoved ; and except by outward force it be put into motion , it always observes the same distance from the Bodies that surround it . Which proceeds from hence , for that the Parts of the Fluid Body , which every way encompass the Wood , are tost with various motions , some upwards others downwards , some to the Right , and other to the Left ; so that the Wood receiving all their contrary motions , rests in an equal poise between them all ; since there is no cause that might incline it one way more than another . But if the whole Fluid Body tend one way , the Wood will be forc'd to comply with its motion , and be carried along with it ; because in this case the Contrariety of the motions in the water is removed , by the waters running one way only . XXII . VVater sometimes conduceth to the Hardness of Bodies . The Plaister wherewith the Walls of Houses and Roofs are cover'd , grows hard by its being mixed with water , and by this means acquires a firmness , which it never had before . Some do imagine the Cause hereof to be from the sudden evaporation of the parts of Water , which by being sublim'd into the Air , leave the rest of the Body hard : But Experience teacheth us the contrary ; for if Plaister of Paris be weighed whilst it is almost Liquid , and be afterwards weighed again , after that it is grown hard , it will be found to have lost nothing of its weight . For my part , I suppose this Hardness is produc'd , because in the Plaister there are many Pores , which the Fire hath formed in it , and are such as that the thicker Particles of Air cannot enter into them , because they have not strength enough to remove those Obstacles which they meet with in the Plaister ; which yet the particles of Water can do . Whence it comes to pass , that the water having been variously agitated with the Plaister , by flowing about the Grains or Clots of it , variously opens the Pores of it , and divides it into much lesser Parts than it was before : And forasmuch as these Particles , by being reduced into most fine powder , have acquir'd more Surface than they had before , when they were yet in Clots , being now joyned together by a more immediate contact , they do constitute a hard Body . XXIII . Why Cement becomes as hard as Marble . And it is for the same Reason , that a Cement made of Flower , the White of an Egg and calcin'd Stones , turns as hard as Marble , wherewith the Sides of that wonderful Fish-Pond at Cuma is walled . So likewise it is a thing well known , that the Powder of Flints and Loadstone being mixed with the white of an Egg and Sanguts Draconis , doth within a few days become an exceeding hard Mass . XXIV . Why aqueous Liquors are easily resolved into Vapours ; but fat and Oily Liquors not so . Aqueous and volatile Spirituous Liquors are easily resolved into Vapours ; whereas fat and oily are not without much difficulty exhaled . The Reason is , because the parts of the former , are endued with very simple Figures ; whereas those of fat Liquors are of more intricate Figures , like Branches of Trees , by which means they hang and cling close together , and therefore cannot without difficulty be separated from each other . CHAP. VII . Of Rough and Smooth Bodies . I. Many Bodies that appear smooth and polisht to sight , are rough notwithstanding . MArble , Steel , Wood , &c. appear smooth ; but yet are found to be rough by the help of a Microscope . The Reason is , because Bodies are commonly polish'd with the help of very hard Powders , the grains whereof cannot but leave Cavities , and consequently Unevenness in the Surfaces of the Bodies so polished . Pumice-stone is also made use of to this purpose ; because by its Roughness , it rubs and wears off the Prominences of the parts . And with these hard Powders always some Water or Oil is mixt , which prepares the matter , and conveys the powder into all the Cavities of the Stone , or other Subject that is to be polished . But however , after all the pains that is taken , Art can never so polish Bodies , but that some insensible Prominences and Subsidences will still remain . II. Glass and Crystal are not absolutely smooth Bodies . Thus Glass , Crystal , and the like , tho' they seem to be the smoothest of all other Bodies : Yet may truly be said to be Rough ; for tho' Glass be made by fusion of the smallest particles of Ashes , yet forasmuch as they are irregular and angulous , they cannot be so bent by the force of Fire , as to cling closely together , and by this cohaesion to lose all their own Figures : For tho' the protuberant Corners of Glass may be worn off somewhat , yet can they never be so adapted , but that some of them will get out beyond their Fellows . And tho' this Unevenness of the parts of Glass be not visible to us , yet must we not therefore deny it , because we know that our Senses are not sufficient to discover all the Affections of Bodies , and often mistake in those things , which Reason proves to be most clear and evident . A Line drawn upon a Paper doth appear strait ; which beheld through a Microscope is found to be crooked , and to have many Inequalities . III. The most exactly polisht Bodies are Rough. In like manner , there are many other Bodies which to our Sight and Touch seem to be absolutely smooth , whose Surfaces notwithstanding are made up of most thin prominent Filaments , with their Intervals , according to the demonstration Microscopes afford us of them . Thus Mr. HOOK hath demonstrated the strange asperity and roughness of the Point of a Needle , and the smoothest Edge of a Razor , Micrograph . Obs . 1 & 2. Yea , all Metals , how polish'd soever , and Lead also , notwithstanding its great compactness , represents great Asperities to the Eye that consults them , assisted with a Microscope . IV. Rough Bodies generally cast something of a white Colour . Bodies that have a Rough surface , commonly cast a whitish Colour ; but being moistned with water , they draw to a blackish Colour . The Reason is , because Rough Bodies consist of many Faces , many whereof are so turned towards us , that howsoever the Rays of Light fall upon them , they reflect copious Beams to our Eye , and consequently produce Whiteness . But when the Surface of a Rough Body is wetted with water , these Unevennesses or Faces are taken away , which before did reflect the Rays of Light , and consequently must make it appear of a darker Colour . V. Smooth Bodies have one part more shining . Polisht Bodies reflect the Rays they receive towards one part , which therefore becomes more bright and shining than the rest , which rather appear obscure and darkish . Which proceeds from hence , because the Expansion or spreading of the Rays reflected from Bodies , is produced from the various Inclination and Eminence of their Parts . And therefore Artificers do cut and grind Diamonds into several Angles and Surfaces , that from them the Light might be variously reflected and diffused . Thus Silver Vessels , when boil'd in a white-wash , become white as Snow , but if after this , any part of them be polished , they lose their whiteness , and become brown and darkish , and like Looking-Glasses , reflect their Rays towards one place only ; because the eminent particles , which were the cause of their Roughness , are taken away by polishing , and therefore it cannot be otherwise , but that that Light which falls upon them , must be directed to one certain place . As we see in an Iron Breast-piece , which being polisht , at sometimes , appears very bright and resplendent , and at others dusk and dark . VI. Why two polisht Marbles are not without difficulty separable from each other . Two Pieces of Marble exactly polisht , do so closely cling together , that the lowermost of them by ▪ its own weight cannot fall down from the uppermost ; no not in case a much heavier weight be applied to it , to draw it down , nor can it be separated from it , but by very great force . The Cause hereof is to be fetch'd from the weight or spring of the Air , which presseth the two pieces of Marble together . Wherefore seeing that the parts of all Bodies that are here with us , are prest against each other , by the superincumbent Air , or the ponderous Exhalations and Effluvia of Bodies , it is obvious to conceive how much the simple Contact of the small particles of any Body , according to their whole Surfaces , doth conduce to the causing and preserving of the firmness of Bodies ; not precisely , because the parts do touch one another ; but because , together with that Contact , there always is an outward Cause , viz. the weight of the pressing Air , which is able to preserve that Contact , till by a greater Force supervening they be separated from each other . VII . Whence the Mossiness and Mouldiness of Bodies doth arise . Some Bodies are very subject to grow mossy and mouldy , as Houses that are cover'd with Tiles or Thatch , the outside of Walls , and Ground that hath not been tilled of a long time . This Mossiness and Mouldiness is caused , when the lesser particles in their Exhalation out of Bodies , are seized by the Grosser and Bigger , and are hindred from flying away and leaving the Body ; for by this means , being mutually entangled , they stick fast to the Surface of it , and turn into a kind of Down . Thus we find , that old Trees breed more Moss than others , because their Juice is not so well digested as to spend it self all in Branches and Twigs ; but because of its weakness is stopt in its way , and covers the Bark of the Tree with a kind of mossy Down . VIII . VVhy a Pumice-stone cannot be polisht . A Pumice-stone , and several other sorts of Stone , are not capable of being polisht . The Reason is , because the Pumice-stone is a porous Body , and its pores are so wide , that the parts of it can never be brought by any Art to the smoo●hness of polisht Bodies ; but after all that can be done towards the polishing thereof will appear rough to the Touch. IX . No absolate smoothness can be found in Bodies . From what hath been said , we find reason to conclude , that there is no Body which can be said to be absolutely smooth . For , First , the most smooth and polisht Bodies have Pores , and consequently so many Cavities , which are inconsistent with absolute Smoothness . Secondly , The Artifice that is used for the polishing of Bodies being performed by Whetstones , or very hard Powders , cannot but leave some Unevenness upon them , as we find by the Microscope in the Surface of the most polisht Steel , or the smoothest Edge of a Razor . And so likewise it cannot be otherwise , but that hard Powders , used by Glass-Grinders , must leave streaks and furrows , tho' imperceptible , to the unassisted Eye . So that whatsoever is commonly spoken of the smoothness or evenness of Bodies , must only be understood with respect to the Senses , but not absolutely . X. Polisht Bodies do more strongly act and resist , than Rough Bodies . Polisht Bodies exceed Rough Bodies in the force of Acting and Resisting , as may be seen in Knives and Swords , which when Rusty , cannot cut or penetrate Bodies so well , as when they are whetted and smooth . The Reason is , because Rough Bodies have their Surfaces very uneven , some of their parts jetting out , and others subsiding : Which Unevenness of the Surface is a great hindrance to motion , and is the cause why the Bodies that are struck against them , do more faintly rebound from them . Thus we find , that a Ball will rebound much further from a smooth , than from a rough Body , which those that play at Ball are very well aware of ; and accordingly , neither can it be any wonder that a smooth and sharp Knife doth cut better and more readily , than another that is all cover'd with Rust . CHAP. VIII . Of Transparent and Opake or Dark Bodies . I. Why some Bodies are more transparent than others . SOme Bodies are almost wholly pervious to the Rays of Light , and reflect but few of them : Others resist the free passing of the Beams , and in some parts only suffer the Beams to pierce them . This Transparency of Bodies consists in the direct or strait position and ranging of their Pores , without any respect had to the Neighbouring Bodies , whether they be continuous or contiguous , because they make no change in the case . For supposing this strait position of the Pores , a luminous Object , will as well affect our Eyes , as a Colour'd will , and impress its Image on our Brain . But when this situation of the Pores comes to be changed , then the Beams of the luminous Body are either not transmitted at all , or do not clearly exhibit the Image thereof , but confusedly and difformedly ; because they pass through the Body , not in Rank and File , but in a tumultuary hudling manner crowd through it . II. Why Glass is more transparent than Paper Glass is more transparent than Paper , and admits a more free passage to the Light. The Reason is , because tho' in Paper , as well as Glass , there be pores which admit the Light coming upon them , yet are they not ranged after the same manner . For in Paper the pores are irregular and confus'd , by reason of the various entanglement of the Threds whereof it doth consist , which obstructs the Action of the Light , for those pores which are open on the utmost Surface , as they go deeper , are obstructed by crossing Filaments . But in Glass there is such an Arangement of parts , that the pores are all continued in a strait Line , so that the Light most readily glides through them , according to that of the Epicurean Poet : — nor can the Beams of Light Through any Body freely reach our Sight , Except the Pores in straitest Lines be rang'd , As they 're in Glass — . For Glass , when it was first made , and was yet in fusion , the particles of the Fire piercing it every way , formed innumerable pores in it , through which the Globuli of the second Element finding a free passage , are able to transmit the Action of Light , which consists in their pression , every way in strait Lines . III. Transparency may be acquir'd several ways . There are several ways whereby Transparency may be produced : First , By melting : Thus we find that Snow and Butter by being melted , become transparent . Secondly , By the intrusion of some proper Body , by means whereof a due position of the Pores is introduc'd : Thus Paper anointed with Oil transmits the Light , and is made Diaphanous . Thirdly , By Resolution : Thus we see that the Waters or Spirits distill'd from Opake Bodies , as of Roses , &c. are transparent . Fourthly , By Concretion or Coagulation , by which means the Diamond and Crystal attain their perspicuity . Fifthly , By polishing and wiping off the Dust : Thus Glass by being polished , and after it is polished by being dusted , becomes transparent , and affords a free and undisturbed passage to the beams of Light. IV. How Glass is made more dusk and obscure , by the addition of new parts . The perspicuity of Glass is diminished by the same degrees , as it increaseth in Thickness and Bulk . The Cause whereof cannot be assigned to ought else , but the Inequality of the Pores : For seeing that Glass is not altogether transparent , but consists of many thick parts , which reflect the Beams of Light ; it cannot be otherwise , but that many of its pores must be obstructed by the addition of new Matter , and consequently the Action of Light hindred . As we see that a man may , through the joyning of his Fingers , perceive Objects ; but if he lay the Fingers of his other Hand athwart them , they will stop those little slits or gaps through which he could see Objects before . In the same manner , tho' a thin Glass does readily transmit the beams which fall upon it ; yet will it stop and hinder the Sight , if it increase considerably in thickness , because its pores by this means are interrupted and are made unequal . And it is evident , that the Inequality of the Disposition of the parts alone is sufficient to render that Opake , which before was Diaphanous . Thus we find that the Grains of Indian Sand , beheld through a Microscope , are not only pellucid , but sparkle like Diamonds ; but when by being heaped together they can no longer give free passage to the Light , they shew Opake or Dusky . V. How Vintners fine their VVines . It is a thing common with Vintners , to fine their Wines , that is , to make them clear and pellucid , by means of water-Glue , ordinarily called Izing-glass , and the whites of Eggs ; making use also sometimes of Alabaster , and calcin'd Flints , for the same end . For the first of these , consisting of Viscous and Tenacious parts , do easily entangle the faeculent parts of the Wine , and sink with them to the bottom : And the other , have a Precipitating force or virtue ; and therefore entring the Pores of the Wine , do precipitate the more dreggy parts of it . In like manner they correct Ropy-VVines , by adding to them burnt Alom , Quick-lime , Plaister of Paris , Salt , and the like ; for all these produce a new Fermentation in the Liquor , and so cause a separation of the grosser parts , which are sent down to the bottom . And by this means the VVine recovers its former consistence and pellucidity . VI. VVater is more opake than a Mist . Tho' VVater seem transparent to the Eye , yet is it less pervious to the Light , than a Mist : For if a man , from the top of an high House or Tower , look down towards the Earth , he will be able to perceive it through a Mist ; whereas he finds that his Eye-sight cannot pierce to see the bottom of a River , where the distance is as great from the Surface of the River to the bottom , as from the said high Tower to the ground . And therefore Divers witness , that after they are got 12 or 15 Cubits under water , they can neither perceive the Sun , nor any thing else . Which is an evident Argument , that the VVater is an Opake Body , and much more dusky than a Mist . The Reason hereof in VVater seems to be the Thickness of its parts ; which being irregular , and of unequal Figures , easily hinder the Globuli of the second Element from passing through them in strait Lines . For we must conceive a Body to become Opake , when the said Globuli cannot pass through it , but by oblique ways , and when their course is stopt by thwarting particles . Now a Mist is more transparent than the VVater , because it consists of thinner parts , and such as are more ready to comply with the motions of the subtil Matter , and easily make way for them : For tho' the parts of the Mist , as well as the VVater , be irregular ; yet they differ in the Magnitude , because the particles of a Mist are more fine and subtil , and not so closely entangled , as those of the water . Whence it is that the Globuli of the second Element move them with more freedom , and more easily thrust them out of their places ; which is the true Reason why a Mist doth less oppose the transmission of Light , than VVater doth . VII . VVhy many Liquors are opake . VVine , Milk and Blood , with many other Liquors , are Opake . And the Reason is , because they are not pure and simple Liquors , but are throng'd with many Heterogeneous Bodies . It is a thing very notorious , that VVine , when it is distill'd , leaves many Bodies behind , which will not rise in Vapours . And this is the reason of the great clearness of Spirit of VVine ; for being by Distillation freed from all its Heterogeneous parts , which were an hindrance to the free passage of the Rays of Light , it becomes wholly transparent , and that in the highest degree . Milk also is Opake for the same reason ; for we find that when the Curds are separated from it , the VVhey is in a great measure Diaphanous . And the same is to be said of Blood , and other such like Liquors , which never appear thick or troubled , but when some strange Bodies are mixed with them , which obstruct or come athwart their Pores . VIII . How Liquors are made clear and transparent . Beer , Ale , and other Liquors , after fermentation become clear , and are not thicker or more troubled at the bottom , than at the top . And this , because the Matter of the second Element , moving in the pores of Liquid Bodies , do continually drive the particles of the third Element out of their places , till they have so disposed of them amongst others , that they do no more resist their motion , than those others do ; or if they cannot so dispose them , till they have wholly separated them from the rest . Thus we see that New Wine doth not only cast some of its dregs upwards towards the Surface , and precipitate others of them downwards ( which might be attributed to the Lightness or Heaviness of the particles so separated ) but also to the Sides of the Vessel . And the same estimate is to be made concerning pure Liquors . IX . VVhy Urine is sometimes clear and transparent . So for the most part Urine is clear and transparent , whilst the Heat helps to keep the pores more lax and open , and consequently leaves a more free way for the Light to pass : But when either the pores are contracted by Cold , or stopt with various little Bodies , they are the cause of the Opacity of the Urine . For indeed , there are but very few Liquors which are without any Opake particles . X. VVhy our hands are commonly more dirty in VVinter , than in Summer . And for the same Reason it is , that our Hands , during the Winter , are more dirty ; because the particles that should exhale through the Skin , continue sticking under it , and that because of the greater constriction of the pores , so that the exhaling Matter is hindred from flying away into the Air : Whereas in Summer time , when all the pores are open , all these gross Exhalations are carried up into the Air , and consequently leave the Hands clean . Wherefore in Cold weather it is good to wash the Hands with warm water , to help to open the pores . XI . VVhy Crystal loseth its perspicuity , when cast into the Fire . Crystal , if it be cast into the Fire , or for a Minute or two be cover'd with hot Ashes , it loseth its Diaphaneity , and seems to degenerate into a quite different Body ; neither can it afterwards , by any known Art , be reduced to its former perspicuity . Which can only be attributed to the particles of Fire , which violently rushing into the pores , do break their order , and consequently produce a new ranging of the parts . Now this confused disposition of the Parts , destroys perspicuity ; as shall be shewed more at large , when I come to treat of Qualities . XII . How it comes to pass that two clear Liquors mixt together constitute a black Body . It has been found by Experience , that from the mixture of 2 clear Liquors , a black Body doth arise : For the Infusion of Galls , which is clear , being mixed with a solution of Vitriol , makes Ink. The Reason whereof is , because the particles of both these Liquors being mixed together , do so intimately close and unite , that by the closeness of their ranging , they hinder the passage of the Beams of Light. For in either of these Liquors there are certain little Bodies , which when joyned together , neither transmit the beams of Light , nor suffer them to reflect from the Body , but do , as it were , wholly swallow them and keep them Prisoners . But if you add to the Ink , Aquafortis or Spirit of Vitriol , it will become clear again , like Spring ▪ water ; because the particles of this new infused Liquor , do separate the contiguous Bodies , and open the shut up pores . But if Oil of Tartar per Deliquium be added to the changed Ink , it will be restored to its former Blackness ; because Oil of Tartar joyns it self with the Spirit of Vitriol , and the particles of the Galls and Vitriol do again embrace each other . It is also from the same Cause that Spirit of Wine , in which Annis-seed hath been boil'd , when mix'd with water , yield a white Colour ; and Oil of Tartar , when mixed with water , becomes troubled and opake ; that is , because the order and disposition of their Parts is troubled , and the passage of the Aethereal matter hindred , by little super-added Bodies that obstruct the pores . XIII . The Reason of the variety of Colours arising from the mixture of various Liquors . Hence it is that when we write with the clear and transparent Infusion of Vitriol , the Letters do not appear at all , except that the Paper hath been done over with the Infusion of Galls ; but a Pen dipt in the Spirit of Vitriol will efface these Characters , which will appear again when drawn over with a Pen dipt in the Oil or Liquor of Tartar. And the cause is much the same in other Colours produced from the mingling of 2 clear Liquors . Thus the Salt of Tartar dissolved per Deliquium , being poured into a solution of Calcin'd Tin , gives a blew Colour ; the same added to a solution of Lead in distill'd Vinegar , yields a white Colour ; and being dropt into an Infusion of Mercury Sublimate , affords a yellow ; Antimony Calcin'd with Nitre , and boil'd in common water , leaves the water that is strain'd from it clear and transparent . All which diversity proceeds from the various disposition of the particles whereof these Bodies are compounded , which causes the Rays of Light to receive a different Reflection from their several Surfaces . CHAP. IX . Of Bodies that are Bended and Pressed together . I. VVhat is the Reason that a bent Bow , as soon as slackned , returns to its former state . A Bow , made of Steel or Wood , being bent , returns to its former state . The Reason whereof I suppose to be , because the pores of the Bow , by the bending of it , becomes so narrowed , that the subtil Matter cannot freely pass through them ; and therefore pushing against them with greater force than ordinary , strives to make its way through them , as formerly . Now this may be done several ways ; for if we conceive the pores of the Bow , before it was bent , to have been of an even widness from beginning to end , but that by being bent the ends of the said pores are narrowed , it is evident that the subtil Matter , which passeth freely through that part of the pores which is widest , when it comes to the narrow Extremities , will endeavour to disentangle it self , and pass further . But if the pores of the unbent Bow be supposed of a round figure , and that by the bending of it they are reduced to an Elliptical figure , the subtil Matter will exert its endeavour , to bring them to their former round figure , and consequently will restore the bent Bow to its former state . For tho' the Globuli of the second Element , with respect to their bulk , are but of little force to shake the sides of the pores ; yet because they continually croud in great numbers into the Cavities of the Bow , striving to make their way through them , all their Forces being joyn'd , and conspiring to this end , are sufficient to effect it . II. VVhy VVires and the Bought of Trees , that are bent , return to their Natural posture of themselves . And it is for the same Cause that Iron-wire , made to wind spirally in Rings , like a Serpent , and shut up in a Box , as soon as the Box is opened , it leaps out of the Box , like a Serpent , shooting it self at some body . Thus also the bended Boughs of Trees , as soon as they are let go , fly back with great force and violence , so as to carry vast weights up with them : Because by this bending the parts of the Boughs are comprest together , which upon the impulse of the subtil Matter , striving to enter the compressed pores , are driven to their former state and posture . III. Some Bodies upon their being bent , rebound or fly back more strongly ▪ others weakly . On the contrary , a soft Plant , such as is the Elder , flies back but a little ; a Hazel tree , which is harder , more ; because the foresaid subtil matter passeth with more ease through the open pores of the former , and with greater difficulty through the straiter pores of the latter . Thus Glass that is bent , returns with greater force ; because the parts of it are not joyned by the mutual entangling of their Branchy particles , as those of Plants are , but only by their Surfaces : And therefore when the figure of the pores of Glass is changed , the subtil matter exerts a more forceable impulse to restore the same . A Proof whereof we have in a Plate of Iron , which by being much hammer'd , acquires this force or spring to fly back . Thus likewise the Air it self , by being comprest and pent in Pneumatick or Hydraulick Pipes or Instruments , when it is left to its liberty again , it dischargeth the ●ullets or water with as much force , as before it had been pent in and comprest ; and all this from the attempt of the subtil Matter , to restore the changed pores to this former state and figure . IV. Why all the wavings this way and that way , take up the same space of Time. A Cord or String fastned at both ends to fixed Bodies , being forced from its situation , runs out and returns , or waves this way and that way in the same measure of time , tho' it doth not always measure the same space of place . The Reason is , because , as in a Body that hangs down , the several motions of the several Excursions are equal to the time of their Returns , by the Altitude of that Circle , the Arcs whereof are described by the hanging Body : So in like manner in a stretched Body , all the Moments of time wherein the middle part of the String waves out one way , are equal to that one time , wherein the other Extream , in case it were cut loose , would strait pass through the whole length , and come to the place of the other , to which the unchanged force would still draw it back . V. Why the Excursions of a string , are not equal to the degree of its being stretched . If you demand , why a String that is as long again , if it be equally stretched , doth make its Excursions as slow again as another : But if the String be stretched as much again , it doth not make its , Excursions as swift again ; but to the end it may do so , the force of the stretching must be 4 times as great . I Answer , that forasmuch as all the Excursions of every String , be they of what length they will , are equal to one and the same straight Trajection , the Trajection in the former case , must needs be made in a double proportion of time ; because a double Space is taken to be run through by the same motive Force : But in the latter case it cannot ; because when we take three equal things , viz. Time , Space , and the motive Force , it must necessarily follow , that supposing the same Space to remain , as much as the time is diminished , so much the motive virtue must increase ; and that there be the same proportion of the space to the time , as there is of the motive virtue to the space : Therefore it must follow , that if the space be in such a proportion to the time , as 2 to 1 , the force must be to the space , as 4 to 2 ; and therefore must not have the proportion to time of 2 to 1 , but of 4 to 1. VI. Why Sticks break after that they have been long bent . Some Bodies that have continued long bent , do break , when we endeavour to reduce them to their former posture ; as we find in some Sticks , which break whenever we go about to straiten them again . The Reason whereof is , because the subtil Aether , whilst it endeavours to separate the particles of Bodies that resist its motion , must not only overcome the Resistance of them , but of the Bodies that surround it . And forasmuch as every thing endeavours to continue in the state wherein it is , and that Bodies which have been once put into motion , do continue in the same ; so it is that the subtil Matter cannot shake them , without superadding more force to them , and increasing their strength ; and so it comes to pass , that dashing more strongly against the said parts , it altogether separates them from each other . VII . A Low that continues long bent , atlast loseth its force of returning to its former situation . A Bow that hath been long bent , especially if it be made of Wood or Steel , doth in process of time lose its force of flying-back , and continues in the same state , to which by bending it hath been reduced . A long Plate of Lead , bent in manner of a Bow , doth not fly back at all , but continues in the crooked state in which it is put . The Reason why a wooden Bow , that hath been long bent doth not fly back , is , because its parts are not so hard , but that the subtil Matter can easily form new pores in them for its own passage ; but a piece of Lead , bent like a Bow , cannot start back : For seeing that the parts of Lead are soft and flexible , they do easily suffer themselves to be penetrated ; so that the subtil Matter can easily form new pores , and being able to pass freely , doth not make any attack upon the parts , whereby it might cause them to fly back . For as drops of Water , falling perpetually , do make an impression even upon the hardest Stones ; so by the continual impulse of the subtil Matter , against the sides of the Oval pores in the bent Lead , they are adapted and accommodated to the free admission of the said particles , so as to let them go through without any Resistance . VIII . Why a Bullet doth more penetrate a Body at a distance , than one which is nigh to it . It is observed by some , that a Bullet discharged from a Gun , doth more penetrate a Body at 100 Foot distance , than at 10 or 20. The Reason whereof is , because the Bullet being so soon beaten back , hath not space enough to perform so strong an effect : Something in the same manner , and for the same reason that a Hammer less flattens a Bullet when lying upon an Anvil , than when it is laid on a Cushion ; as before was mentioned , Chap. 6. Of hard and fluid Bodies . IX . Comprest Liquors take up less Room , than those which are put into Vessels , where they are not pent up . It hath been observed , that when a Vessel fill'd with Liquor is emptied into Bottles , and afterwards the Liquor is poured out of them into the Vessel again , it will not fill the Vessel as much as before ; and that it is more conspicuous in Wine , than in Water . The Cause whereof is , because the Liquor is not so much comprest in an open Vessel , as in Bottles ; and because in the former the Liquor meets with nothing almost , but parts of its own Nature ; whereas in Bottles , the parts of the Liquor meet more with the parts of the Bottle , which so keeps them in , and compresseth them , that they cannot display themselves , as otherwise they would . As the Liquors are comprest by the Sides of the Vessels wherein they are contained ; so likewise on the other hand are Bodies also comprest by the Liquors that are in them , but yet so as to be equally comprest in all the parts of them ; because the parts of the Matter are kept in by each other in Equal poise , neither are they more prest in one place than in another . X. VVhy ● Bellows held with the upper part under water , cannot be opened or displayed . For the same Reason it is also , that a pair of Bellows with the Sides of it clapt together held under water , the Nuzzle of it standing out , cannot be displayed or opened ; forasmuch as the sides of it are comprest by the surrounding water , which will not give way , no not tho' great force be made use of for that purpose , especially if the Bellows be somewhat deeply sunk under water . Thus if you take a Vessel full of Quicksilver , and fasten to it a long Pipe , the top whereof stands out of the Water , it will be so comprest at the bottom of the VVater , that it will cause the Quicksilver to rise somewhat in the Pipe. XI . VVhy the Air breaks forth with such violence out of those Pneumatick Vessels , wherein it hath been comprest . Air that hath been comprest in a Pneumatick Engin , breaks forth thence again with extream Violence ; as is seen in those Engins which cast up water to a great height , or shoot Darts or Bullets at a great distance . Some take the Reason hereof to be , that the Air being strongly prest upon , is received into some empty Spaces , which before separated the parts of Air from each other . But suppose it to be so , what is the Reason that when the Hole of the Pneumatick Vessel is opened , the Air breaks forth so violently ? For if every part of Air retire it self into those empty Spaces , and preserves its former Extension , where is the Compression ? And what is it makes the Air leap back with so much violence , if by being received into those empty Spaces , it does suffer no Violence ? The Cause therefore of this Elastick virtue , is , because the Air being thus comprest , its parts are not capable of dilating themselves as formerly : For being all of them flexible , and moving independently on their Neighbours , they must every one of them have , as it were , a little Sphere , which may be sufficient for them to perform their Circular motion about their own Center in . But being comprest , they can have no such Sphere or Space to move in , since every one of them enters into the other place , and so hinder one another . And whereas the force of the Globuli of the second Element continues still to be the same , and shakes the parts of the Air , as much as before ; they with their Extremities hitting against each other , and driving one another out of their places , at last joyn their forces , and make a general onset to deliver themselves from the said Compression , and procure more room for themselves . Hence it is , that the Air which is comprest in a Pneumatic Vessel , whereof I have given the Figure in the Sixth Part of my Institution , Chap. 14. having water at the bottom of it , doth violently break forth , mounting up to a very great height . XII . How it comes to pass , that the Air may be comprest in a Leaden or Pewter Vessel , but not in a Glass . Water contained in a Glass cannot be comprest , at least sensibly ; which yet may easily be done , when it is in a Vessel of Lead or Pewter . The Reason is , because the Compression of the water is always performed by the Expulsion of some subtil Matter , which lay hid in the pores of the comprest Body . Now because the Air , which is contained in the water , cannot pierce through the pores of the Glass , as it can those of Lead or Pewter ; therefore this is the Reason , why water is capable of being comprest in a Vessel of Lead or Pewter . Thus we see not only , that water is squeezed out of Wool , Sponges , and other such like wet Bodies ; but likewise out of Green-wood , and Air out of Dry-wood , when they are comprest by being put into water ; as is apparent from the Bubbles arising to the Surface of the water . XIII . A Bladder that is blown up with Air , being comprest , returns to its former state of Inflation . A Bladder blown up , being comprest , riseth again . Because the particles of the Air , which are shut up in the Bladder , being in continual motion , and whirling about their own Centers , they consequently cannot , without difficulty , suffer themselves to be compressed ; and therefore as soon as the pression ceaseth , they are extended again by the Agitation of the subtil Matter , and consequently dilate the Bladder , as before . XIV . VVhy the VVind that is pent up in a narrow space , blows more violently . From the same Cause it is , that a Wind breaking forth from the hollow of Mountains , doth with so much violence storm in the open Air ; and that a River , where its Banks are narrow , runs with the greater force and swiftness : For the wind and water being compressed in those more narrow Spaces , do endeavour to deliver themselves from the Force that is upon them . XV. VVhy Leather that is extended by force , returns to its former length . Hence it is likewise , that Cloth and Leather that hath been violently stretched out , return to their former Brevity ; because many of their pores being straitned by that Extension , cannot suffer the subtil matter to pass through them , without a forceable and violent motion : Wherefore , as soon as the said violent Extension doth cease , the pores return to their former laxity ; and the particles that surround the said straitned pores , by means of the subtil matter , are reduced to the bounds of their former Extension . XVI . VVhy the drawing of ones Finger about the Brim of a Glass , makes the water contained in it to leap up . A wet Finger drawn about the Brim of a Glass full of water , or any other Liquor , first makes the water to wave a little , and to rise up in a small Dew , and being continued , will cause the water to leap over the Brim in great drops . The Cause whereof is , because by this drawing of the Finger round the Edges of the Glass , the hard , but flexible parts of the Glass are pressed , and consequently the pores straitned , so as that they are no longer able to make way for the Celestial matter to pass through them . But as soon as the Finger is removed to other parts of the brim of the Glass , the subtil matter presently reduceth the pores of the before pressed part to their former wideness : And from this repeated compression of the particles by the Finger , and their Extension by the entring of the subtil matter , there is first caused an agitation of all the parts of the Glass ; afterwards a swelling and waving of the Liquor ; and lastly , the leaping up of the drops of it over the brim of the Glass . XVII . The Dilatation or Coarctation of the pores of a Body , doth conduce to the Elastick force of it . The Coarctation and Dilatation of the Pores of a Body , do much contribute to its Elastick force . Thus if we wipe the Convex surface of a bent piece of Glass with a hot Cloth , it will by this means become the more bent and crooked . But we shall find the effect contrary , if we wash the Concave surface with Hot-water , or wipe it with a Hot-cloth , for then its Crookedness will be diminished ; because the particles of the Fire do dilate the pores of the Glass . This being much the same effect which we find , when having fill'd a Glass Vial with a long and narrow Neck , up to the middle of the Neck with water , we dip the same in Hot-water ; whereupon we shall find that the water in the Glass will sink a little ; because the heat hath dilated the pores of the Glass , and thereby made the Vial a little wider : But if you let it continue in the Hot-water , then the water which is in the Vial being heated likewise , will rise higher again : But the contrary will happen when you dip the Vial into Cold-water ; for the pores of the Glass being straitned by the Coldness of the water , the Liquor in the Glass will rise higher . XVIII . VVhat is the Reason why Glass Drops , when one end of them is broke off , the whole immediately breaks into small Dust . Little bits of solid Glass are brought out of Prussia , which are commonly called Glass-drops ; the figure of them somewhat resembling a long Olive , with a crooked Neck , not much unlike the Retorts Chymists use , save only that it is solid and without any Cavity , as is exprest in the figure AB . These Glass-drops were formerly made of a hard and thick sort of Glass , but are now made of Crystal-Glass , which being melted , and drawn out of the Melting-Pot with a Glass-Pipe , and being dropt into a Pail of water , becomes formed into these Drops , because of the Clamminess of the Matter . If these Drops be let fall into warm-water , the Drops will be better and more easily formed . Now it is a very wonderful thing to see a solid piece of Glass , which scarcely can be broke with the repeated stroaks of a Hammer , yet when broke off a little above the end or point of it , or being filed in the more distant parts at 1 or 2 , doth immediately break into small Dust , to the great admiration of the Spectators . When indeed the end or point of it 3 is broke , it does not always fall into Dust ; but if the thicker part of the Neck 4 is broke or snapt off with a pair of Pincers , the whole Drop flies into small Dust , not without some noise . This notable Effect cannot be assigned to any other Cause , than the subtil matter , which upon the breaking off of the Point 4 , doth immediately rush into the pores of it with so much violence , that finding no out-let , it exerts its force upon the Neck of the Drop , and breaks it into the finest Powder . For seeing that this Glass , like a Drop , is at first of an Oval figure , and afterwards pointed , and at first drops into the water in greater quantity , and afterwards in a fine string , the pores that are in the Point of it , must needs be uniform and like one another ; whereas those that are in its other parts must be as various , as being more remote from the surface : For the deeper they are in the Glass , the wider they are ; and this , because the Point being so thin and slender , is uniformly condensed by the water inward and outward , and perforated by the subtil matter ; whereas the thicker parts have their outsides cooled and condensed , before their inside . The utmost Point therefore 3 , may be broken either with a Hammer , or with the Hand , without any pains or wonder ; but the other parts 4 , or A , cannot be pierced with a Bodkin or File , before that the whole Drop fly into Powder with a great noise : For because of the straitness of the pores that are in the surface of it , and the dilatation of those that are about the middle , the subtil matter rushing vehemently from the middle of the Glass to the outsides of it , dasheth away the partieles of the third Element . For Experience teacheth , that any Glass that is cooled after this manner doth fly to pieces in small particles : For the parts of the Glass that are about the midst of it , being wider , and growing narrower , as they approach to the surface ; it must follow that the subtil matter penetrating the more narrow pores , doth dash against them with that violence , that it makes the Glass fly into small Dust. XIX . A Glass Drop being heated again in the Glass-makers Furnace , and suffer'd to cool by degrees , doth not , when broke , fly into Dust . But if this Drop be afterwards heated again in the Furnace , and suffer'd to cool by degrees , the now mentioned wonderful effect doth not follow ; because in this case the foresaid Pores are all uniform : According as we find it happens in Steel , which being a second time heated in the Fire , doth thereby acquire uniform pores throughout , still retaining the Hardness it had before . Wherefore also when the Point of it is broke off , there is no reason for its breaking into pieces , because the subtil matter finds its way open through the uniform pores of it . But the contrary happens , when being put into the Fire , it be not suffer'd to become red hot ; for tho' then when the Point 3 is broke off , or the part 4 , it doth not fly into Powder ; yet if the breach be made nearer to A , the same effect will follow by the Reason before given . XX. Pressed Bodies exert a greater force at the beginning of their Dilatation , than at the end of it . It is observed , that all Bodies which are dilated by an Elastick virtue , do exert a greater force at the beginning of their Dilatation , than at the end of it . The Reason is , because these Bodies , at the beginning , are supposed to be more comprest , than afterwards when they are more dilated . Now it is plain , that whilst they are more comprest , their Elastick virtue or Spring is so much the stronger , and they do the more endeavour to dilate themselves , so that they must needs exert a greater force at the beginning of their Dilatation , than in the progress of it . The Second Part OF THE HISTORY OF NATURE . OF QUALITIES . CHAP. I. Of Qualities in General . I. Qualities , as they are commonly explained , are altogether unintelligible . A Student of Philosophy ought to abhor nothing more than to assert things which he doth not understand , or to endeavour the Demonstration of what he cannot define . But yet there be many that are guilty of this fault , who endeavouring to defend the opinion of some of the Antients concerning Qualities , do attribute such a Nature to them , which we can have no conception of . For of what use is it to tell us , that a Quality is that whence things are said to be Quales or such like ? What Old Woman is there that doth not know as much ? Is there any Country Fellow so blockish , that doth not know that by Whiteness things are made White , and by Redness , Red ? They would do much better to acquaint us wherein precisely the Nature of a Quality doth consist , how it doth affect the Subject it belongs to , and after what manner it is diffused through the same . Let the Peripateticks therefore in good earnest tell us , what Representation they frame in their Minds of a Quality , and trouble us no more with their Words , which serve only to darken and sully Truth . Is Quality any thing Physically , or really distinct from the Substance wherein it is ? Or is it superadded to the things that are denominated from it , as some new Entity ? Let them therefore explain its Genuine Nature to us , and do it in such a manner , as that what they express in words , may be intelligible to us . If they cannot do this , which indeed I suppose is a thing impossible for them , why do not they quit these frivolous Qualities , and following the Laws of Nature , espouse more Intelligible Principles ? II. Wherein the Nature of a Quality doth consist . What is more Intelligible than Quantity , Motion , Situation , Figure and Rest ? By which all natural effects may be made out , even the most abstruse and difficult of them . A Watch is moved , and without any outward force , measures and shews the Hours . A Key locks a Door , and opens it . Is there any necessity to conceive a faculty in a VVatch , that may set its VVheels a going ? Or in a Key any thing really distinct from it whereby the Lock is opened ? What Man in his wits will not confess that it is more consonant to Reason , to attribute the constant motion of a VVatch to the Steel Spring , the disposition of the VVheels with their figure and contexture ; and the power of shutting and opening that is in a Key , to the Figure and Ranging of its Parts ; than to have recourse to Qualities , which they can never explain nor conceive ? But this is to run out beyond what I have here designed , which is not to assert the Nature of Qualities by Arguments , but to confirm the same by Experiments . III. There are no Qualities in the Sun that are really distinct from it . The Sun hath a power to harden Clay , soften VVax , melt Ice and Butter , to resolve VVater into Vapors , to whiten Linnen , to tan the Skin , to ripen Fruits , to hatch the Eggs of Fowl and Silk-worms , and sometimes to produce I know not how many various effects . All which are not any distinct Powers or Qualities in the Sun , but only the results of its Heat , which according to the different Texture of Bodies , and according to the different concourse of Cooperating Causes , is variously determined . IV. The Difference of ●odies proceeds from the different Figure and Contexture of their Parts . The Purest Spirits of VVine , when joined with the most highly Rectified Spirit of Urin , become united together in the appearance of Snow , which is caused by nothing else but a new Texture of Parts : As when the Spirit of Nitre , mingled with detonated Nitre resolved per deliquium , is turned into Saltpeter . Or , as when the Spirit of Salt being beaten with the VVhite of an Egg , doth communicate to it hardness , which it had not before . V. The Sea-water changeth its Colour by Agitation only . When the Sea is tost and beaten with VVinds , it changeth its Colour , and what was a Seagreen Colour before , does now appear VVhite ; as the same is Elegantly described by LUCRETIUS . As in the Sea when the mad Ocean Raves , And white Curles rise upon the foaming VVaves . Now who can be imagin'd so weak in his Intellectuals , as to attribute this change to any supervening Quality ? For what Agent should effect this alteration ? Or by what means could a real Entity be diffused through such a vast conf●ux of VVater ? The Sea therefore becomes white b● being ●urned into froth , that is , by the variatio● o● i●s parts in their Magnitude , Situation and Figure , and rising into little Bubbles ; whence the reflected light being conveyed to our Eye , represents a white Colour . VI. Great changes are produced in Bodies , only from the alteration of the Disposition of the parts . Thus , if Mercury Sublimate ●e put into hot water , and a few drops of Spirit of Urine dropt into it , and then filtrated , it becomes white like Milk. Thus Red Lead and Coral , by the infusion of Oil of Tartar , acquire a white Colour . Thus Gold being mixed with Silver , if afterwards it be ●e●arated by Aqua Fortis , a black Powder falls to the bottom , its first Colour being lost . Of which change no other cause can be assigned , than the Figure , Texture and Order , &c. of the Parts . For as LUCRETIUS expresseth it , — In Bodies so , As their Seeds , Figure , Order , Motion do , The things themselves must change and vary too . VII . How water after various concoctions , changeth its ● rmer qualities . Put water into a strong Pot or Vessel , and having luted its Cover to it , and let it stand for some time upon Burning Coals , then remove it , and let it grow cold ; then set it to boil again as before ; and you 'l find that by the repeating of these alterations several times , the Colour , Taste and Smell of the water will be changed . This change in the water proceeds from nothing else , but the new Order , Figure , Position , &c. of its parts . For the force of the Fire separating the particles of the Liquor , makes them to acquire another position than they had before , by which means different qualities are induced into the water , and they made to affect our senses in a different manner from that they did before . VIII . Various Bodies arise from other Bodies , only by the figuration and position of the parts . How many sorts of Plants do we see grow out of water only , into which they shoot their Roots , and attracting it for their nourishment , do encrease in weight , grow up , and spread their Branches . And indeed it is a matter of wonder to see hot and Caustick Plants , such as Crowfoot is , growing and encreasing in , and from the water alone ; neither can this change be assigned to any thing else , but the meer change of the Figure and contexture of the Parts . Thus from churn'd Milk , without any other accession of a new form , but by a pure transposition of Parts , Butter and Buttermilk are produced . Thus Glass is made of Sand and Salt , and Roman Vitriol of Salt and Copper ; for as Sand gives Glass its firmness , so Copper or Iron afford the same to Vitriol . IX . Whence it is that Oisters have some part of them Red in the Summer . And for the same reason it is that Oysters , in the hottest Months of Summer , have the appearance of Blood in them ; which Colour towards the approach of VVinter vanisheth , because then for want of beat , the Oysters cannot concoct the Alimental Juice to that high degree , as to produce Blood. And suitably to this Physicians tell us that the Redness of the Blood proceeds from the acidity of the Vital Saline Spirit ; much in the same manner , as Juleps by the instillation of a few drops of Spirit of Vitriol , acquire a Red Colour . X. Oyl of Tartar dropt into an Infusion of Sena-leaves , changeth the colour of it . If you drop a few drops of Oyl of Tartar into an infusion of Sena-leaves in warm water , the water will presently turn Red , and become of a purple Colour , tho' there be no such Colour , either in the VVater , Leaves , or Oyl of Tartar. The Cause of which Redn●●s is , for that the Oyl of Tartar , piercing into the substance of the Sena , doth so agitate and separate the parts thereof that it makes way for the most minute particles of the water , to enter the Pores of the Sena ; and changing their Text●●e , make the Beams reflecting from them to exhibit to our Eye a Red Colour . And that this Redness is by this means produced , may be plainly evinced , because another Oyl , for instance , that of Vitriol , being infused in the said water , will not not produce the same effect ; because it wants the power to ●●netrate ●he substance of the Sena , and separate its parts so , as to make way for the Particles of the water to enter . XI . Why two cold Bodies mingled together do sometimes produce heat . And the same may be applied to other Qualities , as Heat , &c. for our Touch assures us , that there is an extream heat , in Stygian waters , or Corrosive Chymical Spirits when Metals are dissolved in them . And in the Spirit of Nitre , poured upon the butter of Antimony , or the filings of Lead ; when yet the said Corrosive Spirits as well as Metals , are both cold . XII . An Apple thrown against a Wall , doth acquire new qualities in that part where it hath been bruised . An Apple when dasht against another Apple , or when bruised by falling down to the Ground , or being thrown against a Wall , that part of the Apple which is bruised will be found to differ from the rest in Smell , Taste , and other Qualities ; and this change is so great , as that it seems to be quite of another nature , than the other part of the Apple . Which change proceeds only from the Transposition of its Parts , for no new thing is superadded to it by its bruise , but only the parts of the Apple are altered from the Position they had before . So likewise we see what a great change is produced in VVine , when it is changed into Vinegar ; of which notwithstanding no other cause can be assigned , but a slight exhalation of some of its minute parts , or rather the change of their Configuration , by being shaped into little pointed Swords . And as by the exhalation of some parts this change is caused in VVine , so no less an Alteration of things is often produced , by an accession of new parts . Thus an Apple or Pear , by being rolled hard upon a Table , doth grow soft , and of a sweet Taste , by a gentle distribution of the Spirits into all the parts of it , as the Chymists express it , the unequal Distribution whereof is the cause of a harsh and sour Taste in Fruit : For hard Rolling is a mean between Concoction and simple ▪ Maturation . But of this we shall treat more largely in the Part concerning Plants . CHAP. II. Of Heat . WAter , which when cold is without motion in a Pot or Kettle , when it is hung over a Fire and boils , riseth up to the brim of it , when as before it scarcely filled one half of it . The Reason is because the heat of the Fire doth put the parts of the Water into Motion , and separate them from each other , and is the cause why by reason of the admission of Air , or some other insensible matter , they ca● no longer be contained within the same bounds as they were before , but require a greater space for them to display themselves in . For it is common to all Bodies that are rarefied , to encrease in bulk by the reception of the subtil matter into their pores ; and more especially where the Rarefaction is caused by some considerable Heat , which puts the parts into Motion , and separates them from each other . II. Why the heat of the Sun is commonly vivifying and vegitative , and that of the Fire destructive . The Heat of the Sun promotes the vegetation and vivification of things ; whereas the heat of the Fire is rather destructive , and generates nothing by its activity . The Reason whereof is , because the heat of the Sun is moderate , and because of its distance and perpetual circling about the Earth very gradually dispenst . Whereas the heat of Fire , because it cannot reach far , and before it can produce any considerable effect , must approach nearer to Bodies , than is for their preservation , doth presently vanish , and either through the ignorance , or impatience of men , cannot be kept in that temperature which is necessary to the vegetation of things . But if so be , it can by the Art and Industry of Men be reduc'd to a due Temperature , then nothing will hinder but that Eggs may be hatched by it , Plants produced , Insects generated , and all living things cherished by the warmth thereof . III. A thing that is Lukewarm only , seems hot when touched with a cold Hand . A Lukewarm Body , touched with a hot Hand , seems cold to us ; and hot when we touch it with a cold Hand . Which different Sense doth not proceed from the thing that is Lukewarm , but from the Hands that touch it ; for tho' the same force be in the Lukewarm Body to agitate both hands ; yet because the commotion of the parts of the hot Hand , doth exceed the Agitation that is in the parts of the Lukewarm Body , it makes the heat of the Lukewarm Body to appear or feel cold . For the Agitation of the Particles of any Body considered in themselves , is not called heat , but only so far as it affects our Sense of Feeling . IV. Why the same Baths are sometimes judged hot , and at othertimes cold . So they who enter Baths distinguisht by different degrees of heat , having continued for some time in those that are Lukewarm , before they enter those that are more hot , find that that water which at first was so hot , that they could scarcely bear it , doth now seem cold to them ; because their Body being thorough hot by the heat of the Baths , can no longer be affected by a weaker heat . Neither is it to be questioned , but what seems to be hot with Scythians , who live in a very cold Air , would be esteemed cold to Aethiopians , that live in a very hot Climate . V. Collars and Caves under ground , are not hot in Winter-time . Wherefore 't is a mistake in some , who conceive that subterraneous places , as Cellars , and the like , are warmer in Winter , than in Summer : seeing that this difference of heat proceeds only from our Body , which is differently affected in Winter , from what it is in Summer : And we do not mind that the same thing may appear cold to one that is hot , and on the contrary , hot to one that is cold . For if it be so indeed , that Subterraneous Caverns are hot in Winter , whence is it that the Oyl that is kept in them congeals , which it doth not in Summer , when yet they appear to be cold ? Subterraneous places therefore are judged to be hot in cold weather , because our Bodies are cold when we enter into them ; and in Summer , cold , because at that time our Body is hot . VI. Why Gold burns more violently than Fire . A Molten Metal , and especially Gold , burns more strongly than the Flame whereby it is agitated , and whence it is put into its heat . This proceeds from the compactness and closeness of the parts of Gold , which being fat and thick , cannot be dilated , or very little , which is the reason that it both burns more vehemently , and retains its heat longer . For the particles of the Fire , are as it were shut up in the Gold , without being able to disentangle themselves . Whence it is that a Man cannot touch Gold in fusion , with his Hand , but that the Skin of it will be shrivel'd up and burnt immediately . And on the contrary , Iron produceth a greater heat in Aqua-fortis , than Gold it self doth , because this Liquor enters the softer parts of Gold with less force and violence . For the same Reason boyling Oyl burns more violently than Water , because of the Connexion of its fat and unctuous parts , which do more tenaciously keep the particles of Fire enclosed , and suffer them not to get away . VII . Why a Nail does not grow hot by the stroaks of a Hammer , till after it be driven home . A Nail struck with a Hammer , and driven into the hardest wood , doth not feel hot , whilst it is entring the wood , but is only perceived to grow hot , by those strokes of the Hammer that light upon it , after that it is driven home . The Reason hereof is evident from the Nature of Heat , which doth not consist in the direct motion of Bodies , but only in the Agitation of the Insensible Parts . ▪ So that it is apparent , that the Nail cannot be heated , as long as the whole of it is in motion , and is entring the wood ; but when it is driven home , the Stroaks that afterwards light upon it , put the insensible particles of it in motion , wherein the nature of heat consists . But the contrary happens when wood is sawed with a Saw , or bored with an Auger , because then the Saw and the Auger grow hot , and not the Wood , because in this case the insensible parts of the Saw and Auger , are moved and not those of the wood . VIII . Why the Iron that is Filed grows hot , and not the File it self . When a piece of Iron is filed , it is observed that it will grow hot , but the File remain cold . IX . VVhy the Axeltree grows hot , and not the Iron Plate that is on the VVheel . And why the Bullet discharged from a great Gun is not heated . The Reason is , because the File excites a great commotion in the parts of the Iron , which produces heat . And tho' the parts of the File do suffer the same force , as the parts of the Iron , yet because they are much longer than it , they do not with the very same Testh touch the same part of the Iron twice ; but there is always some space of time between the gratings of the parts of the File , during which , that part of the File , that began to be heated , loseth its heat again . So likewise the Axeltree of a Coach or Cart grows hot , and not the Iron-plate that goes round the Wheel , because tho' it describes greater lines , yet are not its parts agitated amongst themselves , like that part of the Wheel , which rubs continually against the Axeltree : Because the Essence of heat doth not consist in the swiftness of the motion , wherewith any Body is moved , but in the violent and various agitation of the insensible parts of Bodies . Thus the Bullet discharged from a Great Gun , and most swiftly moved , doth not burn the wood which it penetrates , nor the Bullet discharged from a Cross bow , doth not fire a dry piece of Linnen that it is shot through ; because tho' both these Bullet ▪ be most swiftly moved , yet are not their parts put into any agitation . X. Why the Breath we breathe forth with our open Mouths is warm , whereas that which we put forth with more force through our almost shut Mouth , is cold . The Breath we breathe with open Mouth into our Hand doth heat it , but if we blow it forth with vehemency through our Mouth almost shut , it is cold , and cools , suppose hot Pottage , or any thing else . Our Breath causeth heat , when it is breathed forth gently , that is , when it consists of parts variously agitated , and when it unequally lights against the hand . For the heat of Bodies is nothig else but the various determination of their insensible parts , whereby they are moved this way and that way . But the Breath we blow from our Mouths , driv●s out the heat from any Liquor ; because it is swift and determined to one part only : For by this means the most subtil parts of the Liquor , cannot separately continue their own proper motions , because they are all driven and determined by the blast of our breath to one part ; as the motion of all the parts of a River is determined one way . XI . Why Quicklime , and some other Artificial Stones grow hot , when spinkled with water . Quicklime grows hot when water is cast upon it , to that degree , that it burns more violently than a Flame . The Reason is , because the Pores of the Lime-stone which before only were open to the passage of the Globuli of the Second Element , have been more dilated by the Fire ; so as that afterwards they were free to admit the particles of water also , but yet only such of them as were surrounded with the matter of the first Element , which rushing against the hard Particles of the Quicklime , do shake and separate them , especially if there be any store of them , and they do from divers parts , rush against one and the same same part of the Quick-lime . And in like manner we see that an Artificial Stone made of Pitch , Tarr , Tartar , Brimstone , Saltpeter , Sarcocolla , and Oyl of Peter , equal parts , and as much Quicklime as all of them , mixed with the Yolks of Eggs , and kept for some days buried in Horse-dung , if it be sprinkled with fresh water doth break forth into a flame . XII . Why the heat of Quicklime exceeds the heat of a Flame of Fire . The heat caused in Quicklime , by the aspersion of water , is more violent than the flame that proceeds from Fire , because the Quicklime consists of branchy particles , which when they are separated from them the matter of the first Element , which surround the particles of water , do violently strike the hand , piercing and rending the Skin like so many Needles . And for the same reason a Coal , whose parts are intangled with long and various branchy parts , produce a greater heat than Flame doth . Thus melted Metal , and more especially Gold , burns more strongly than Oyl , and retains its heat much longer ; because Gold consists of a more close and compact unctuous matter , and therefore is less subject to be dilated , and to let the particles of Fire it hath received to fly from it . XIII . Why a Red hot Iron is hot mad● use of for ●he cutting of Glass Glass is commonly cut with the Edge of a red hot Iron , or with a Packthread dipt in Brimstone . The Reason whereof is , as was before said , that the parts of the Glass being agitated by the heat , require more room , and therefore drive the neighbouring Bodies from them . For it is impossible that the parts which are heated , should move swiftly and circularly , without taking up more space . This is evident , as in all other Bodies , so even in the most compact Bodies of Metals , which do somewhat swell , and become distended by heat . XIV . How Heat comes to be produced by two cold Liquors mingled together . Liquors , that of themselves are cold , when pour'd together produce a great heat . Thus Spirit of Vitriol added to Oyl of Turpentine , grows very hot . It hath been also observed that Spirit of Wine , by degrees added to Aqua-fortis , or Spirit of Nitre , doth cause a great and lasting heat . Which Heat is caused from the diversity of the parts whereof the Liquors do consist ; as being of such Figures , as that upon their mixture , they can the better join together , than when they are separate and by themselves , and that in this closing together , they swim upon the matter of the First Element , at least at the time that they are perceived to boil or effervesce . Which may be confirmed from hence , that after their ebullition is ceased , it is evident that many of them are grown together , constituting several hard Bodies . In the same manner , Oyl of Vitriol , when cold water is pour'd upon it , grows hot ; and Aqua-fortis into which Salt Armoniack hath been infused , doth contract a heat , by casting into it some bits of Brimstone . Thus the Spirit of Salt Armoniack and Tartar , and the Filings of Lead , or the Oyl of Vitriol , and the Filings of Steel joined together are productive of heat . And which may seem more wonderful , Ice it self being put into the Oyl of Vitriol , causeth so great a heat , as to send forth Smoak . And so Fruits also , as Cherries , when put into Spirit of Nitre , produce a considerable heat . XV. The mingling of Brimstone with Steel , produceth Heat . We must not here omit a notable experiment , which is , that if you mix half a pound of Flower of Brimstone , with the same weight of Filings of Steel , and put this mixture into cold water , stirring it now and then , it will cause so great a heat , that the vessel will be too hot to be touched . Thus Quicksilver prepared after a peculiar manner , and amalgamated with Gold , doth give such a heat , that it cannot be endured . XVI . The Stone Magnesia dissolved in Oyl of Vitriol , produceth heat . In like manner the Stone MAGNESIA , which in hardness resembles the Loadstone , when put into the Oyl of Vitriol , stirs up a great heat , which is encreased by repeated affusions of water , and like Iron communicates a Red Colour to the Aqua-fortis , sends forth a sharp and stinging fume ; and when some of it is put upon Molten Glass , presently the Glass swells , which is common to it with Copper and Iron . Thus if you cast a little Filings of Brass into a great Bottle , in which there is only a small quantity of Aqua-fortis , there follows such an effervescence , that the Bottle seems to be full , and produceth so great a heat , that the Bottle cannot be touched . XVII . Two hot Bodies mixt together , produceth sometimes a third , that is cold . Sometimes two hot Bodies mingled together , produce a third of a different Nature : For if you pour the Spirit of Nitre , which is very hot and piercing , upon Lix●vous Salt , the product of this conjunction will be Saltpeter , which cools rather , than is productive of heat . The Cause whereof is , because the particles of Nitre and Salt become so intangled together , as that they lose their sharp points , whereby before they were used to dissolve Bodies . For the Bodies of the Nitrous Spirit , which before were volatile , and were easily sent away into the Air , being now kept down by the fixt Salt , can no longer fly away . And therefore it is no wonder that the Spirit of Nitre loseth the power of heating which it had before , and ceaseth to be Corrosive . XVIII . How Snow comes to be condensed by heat . Notwithstanding that , it is the property of Heat to rarefie Bodies , and by loosning of their parts , to make them take up more room : Yet , for all that , we find that it doth condense Snow and Clouds . The Reason whereof is , because the filaments of the particles of Ice , whereof Snow doth consist , being more thin and slender than the middle part of them , they are consequently upon the approach of Heat , more easily dissolved , and bending themselves this and that way , because of the agitation of the subtil matter that surrounds them , they , embrace the neighbouring particles of Ice , without quitting those they were intangled with before ; and by this means constitute a more compact substance than they did before . XIX . The same effect is produced by heat in the Clouds . This effect is still more clearly discoverable in the Clouds ; for since the particles of Ice , whereof they consist , are at a greater distance from each other , and leave greater Intervals between them , they cannot approach to their neighbouring particles , but that at the same time they must be separated from some other ; and therefore when they are bent , must needs take up less room , and consequently constitute a more close and compact Body . XX. Heat turns Lime and Ashes into Glass . Lime and Ashes , by the heat of the Fire , are turned into Glass : For the Crystal Glasses of Venice are made of Stones which are found near the River Ticinus , and brought from Pavia , with an equal quantity of the Ashes of an Herb , which the Arabians call Kall , and which grows in the Desert between Alexandria and Rosetta . The Effect of reducing these to Glass , is never produced , but by a long continued Fire , and that in the highest degree : For seeing that the particles of Lime and Ashes are thick and irregular , they cannot so lie upon one another , as to stick or cleave together . Wherefore a strong Fire must be employed , to exercise its activity upon them ; for then , whilst the thinner particles of the Third Element , together with the Globuli of the Second Element , are laid hold of , by the matter of the First Element , and proceed to move most swiftly about them , their Corners are by little and little worn off , and their surfaces being made more smooth , and some of them bended , flowing over one another , they no longer touch each other now in some points , but are joyned with their whole surfaces , and so sticking together , constitute that Body which we call Glass . CHAP. III. Of Cold. I. No Body is altogether destitute of Heat . NO Body , how cold soever it may seem to the Touch , is wholly devoid of Heat . For water , which to our sense is most cold , is proved not to be destitute of all heat , because of the Vapours and Steams which we see do arise from Rivers and Pools , even in the Winter time , and in the Night time . The Reason is , because Cold is nothing else but the want of Heat ; and as Darkness is the privation of Light , which is the companion of Heat , or the effect of it ; so Cold seems to be nothing else but a privation of the said Heat ; and therefore that which we call Cold , is nothing else but a more remiss degree of Heat . II. Why a Hand benumb'd with cold , when held to the Fire , is seized with extream pain . It happens sometimes in very Cold Weather , that Mens Hands , and other parts of their Body grow numb'd ; which when they come near the Fire , are seized with very sharp pricking and shooting pains . The Reason whereof is , because the particles of Fire , being in continual motion , do with violence run a-tilt upon the Nerves of the Hands , or other Members that are benumb'd with cold , and wound them as it were with so many pointed Lances . Which Vellication of the Parts cannot be without causing great Pain . Wherefore to restore a Hand benumb'd with cold , we must not presently expose it to the Fire ; but first gently rub it , and endeavour to bend and move the Joints , that by this means the chaced blood may be recalled , and the parts that were asleep or benumb'd , may again come to themselves . Wherefore in Swedeland , Denmark , and other cold Countries , when any one chanceth to be thus benumb'd with cold , or in danger to be seized with a Gangrene , they presently put the part into cold water , or Snow , for by this means the pores that were shut up by the cold , are opened by degrees , and make way for the banisht vital Spirits to return to them again , whereby the parts are soon after recovered to their former state . III. What hapned to K. James I. in Denmark . Thus BARCLAY tells us , that when King JAMES I. was in Denmark , and that by the cold , the end of his Nose , and the Lappets of his Ears were become without all feeling , and almost mortified , he by the advice of the Inhabitants , applied Snow to them , to preserve them from a Grangrene . The Reason of this cure of frozen and benumb'd parts is , because the grossest matter of the Second Element , which got out by their pores , when the cold began to shut them up , cannot re-enter again , in order to restore to those parts their former softness , without destroying their connexion , which might cause a mortification or Gangrene , which is avoided by rubbing the parts with Snow , because the Snow contains nothing in its pores besides the most subtil matter of the Second Element , which is very proper and fit to open by degrees the pores of the congealed parts , till they be wide enough to let the more gross matter of the Second Element pass through them also . V. How frozen Apples may be restored to their former state . Neither can any other Reason be given , why frozen Apples being put into cold water , are restored to their former condition , than that the cold water doth gently dissolve the congealed Humour in the Apples , and consequently causeth that effect of the Cold to cease . V. Why the Air is so exceeding clear in Extream cold weather . During the most violent Cold of Winter , the Air is most thin and serene ; but when the Cold is more remiss and moderate , it is generally Misty . The Reason whereof is , First , because extream Cold doth more condense the thick Vapours of the Air , and by this means makes them to fall down , and consequently leave the Air more clear and serene than it was before . Secondly , Because extream Cold shuts up the pores of the Earth , by which means the Vapours are hindred from exhaling thence , and darkning the Air. Whereas moderate Cold produces a cloudy and misty Air ; because the weak Heat which is joyned with that Cold , raises up Vapours from the Earth , which it is not strong enough to discuss or dissipate . VI. Marble in the Heat of Summer retains its Coldness . Some Bodies never quit their Coldness , as Marble , and such like , which in the hottest season of the year feel very cold . So likewise Ice retains its hardness in the Summer , and is as cold then as in the Winter . These familiar Instances make out , that Cold is nothing else than Rest or privation of motion . For the parts of Cold Bodies do cleave and stick fast together , so as to constitute a most close and compact Compound . But how doth it come to pass , that Marble , Ice , and other Bodies of like Nature , do preserve their Coldness , at all Seasons , in the same intense degree ? I Answer , That this proceeds from the Heavenly Globuli , which penetrate their pores ; for the largest of them being endued with a stronger force of moving , do produce Heat : Whereas the lesser of them , which are inferiour in Force to others , do communicate Cold to Bodies , as will appear from the Experiment . Marble therefore is thus Cold , because the pores thereof are so strait and narrow , that they can only admit the very least particles of the most subtil Body , excluding the greater that cause motion . And forasmuch as Water does never freeze , except when the Matter which runs between its parts is more subtil than ordinary , it so happens that the pores of Ice , which are then formed according to the bigness of these particles of the most subtil matter , by this means become so narrow , that they shut out those particles that are never so little greater . And this is the reason why Ice continues to be most intensly cold in the midst of the greatest heats of Summer . This also may be perceived by the Dissolution of it ; for Ice doth not melt like Wax , whose flexible particles , give way to the Agitation of the Fire , and by the force thereof are separated : For the narrowness of its pores hinders the Heat from entring to its inward parts , save only as the outsides of it melt away , and are broken by the force of it . VII . How water by means of Salt , may be turned into Ice . Put some Water into a Glass , and lay Snow mixt with Salt round about it , so as to touch the sides of the Glass ; and as soon as the Snow and Salt begin to dissolve , the water will be turned to Ice , not only in the winter time , but at any other time of the year . The Reason of this Experiment is , because the greater Globuli of the second Element , which by their agitation are the cause of the waters fluidity , being of more force than those which run betwixt the parts of the Snow , and finding a more convenient place for themselves to move in , the stiffer and smoother particles of the Salt and Snow do necessarily tend that way : And forasmuch as Nature doth not admit a penetration of Bodies , and that all motion is performed by means of a Circle , the lesser Heavenly Globuli contained in the Rain and Snow , upon the approach of the greater , strive to get out , and to return to the places they have left , through the pores of the Glass . But because these Globuli are not sufficient to continue the motion of the water , consequently thereupon it becomes congealed , and acquires the coldness and hardness of Ice . And on the contrary , the Snow mixed with the Salt , dissolves and runs to Liquor , because it is agitated by the greater Globuli , which before , by their motion , kept the water liquid . VIII . Whence it is that the Spirit of Wine doth cool . And probably it is for the same Reason , that Spirit of Wine , which is hot of its own Nature , doth cure Inflammations and the Squinzy ; and also cools and heals the part that is scorched with Gunpowder ; viz. because the Spirit of Wine hath its pores so disposed , that being applied to the enflamed part , it only admits the lesser Globuli of the second Element , which by their more remiss and soft agitation of the parts , do asswage the pain . IX . Diseases cured by likeness and sympathy . Thus the Inflammation of the Emrods are cured with a Toasted-Onion , or fulminating Gold mixt with Brimstone . For the Juice of the Onion being very sharp , with a mixture of Sowrness , as Salt Armoniack and Tartar also are , which enter the composition of fulminating Gold , draw forth from the part affected , the Humour that is analagous with them , and mixt with it . It is a thing also owned by Physicians , that Diseases of Men may be communicated to Animals , by reason of the analogy of parts . Thus Mr. BOYLE tells us of a Potters Son , that was cured of the Kings-Evil by a Dogs often licking of it ; the Disease having been by this means transplanted in the Dog. X. Cold is very hurtful to Plants . Cold doth great harm to Plants , and if we may speak with the Ancients , doth scorch and burn them up like Fire . This indeed is commonly ascribed to Cold ; but if we diligently weigh the matter , we shall find that according to Truth it can be no more than the remote cause of this effect ; because it rather proceeds from the Heat which follows upon the breaking of the Frost . For seeing that the heat cannot enter the pores of the Plants that are shut up by frost ; neither can it restore to their Inward parts that degree of softness , which they had before their congelation ; since the said Frost hath spoiled the connexion and situation of the other parts , and therefore there cannot but follow an entire change of the whole , that is made up of these parts . XI . Why sometimes the contrary happens . But yet sometimes it happens , that some certain parts of Plants , do without hurt endure Cold , as when the pores of Plants are shut up by Cold before that they begin to bud ; for before that time they do not so much abound with that watry Juice , and their pores however narrowed by Cold , are still open enough to give entrance to the subtil matter that may agitate the parts . For it is not necessary that their contexture should be destroyed by it , which are the first that bear the onset , before the Inward parts be set upon . XII . Why is cold Body , such as Marble , cools the Air that is near it . The Air that surrounds a cold Body , as Marble , is colder than that which is farther from it . The reason whereof is , because scarce any but the most subtil matter hovers about Marble , either that which is about to enter the pores of it , or which flows out from it : And because this subtil matter , because of the tenuity of its parts , is not able to move the thicker particles of the Air , that might cause the Sense of Heat in us ; for this Cause it is that the circumambient Air is perceived to be cold . XIII . What is the Reason of the cold Air that is about Fountains . And it seems to be for the same Cause , that a cool Air is perceived about those Fountains , whence the water leaps up with great force ; viz. because the thicker parts of the Air , which serve to excite Heat , are seized , and carried away by the water gushing forth , so that nothing but the Aethereal matter is left there . XIV . Why Cold makes the water in a Weather-Glass to mount upwards . When Water , or Spirit of Wine , tinged with a Red or other Colour , is put into a weather Glass ; this Liquor doth of it self rise or fall , according to the coldness or heat of the Weather . The Peripateticks assign the Cause of this Effect to be the condensation of the Air , which is in the upper part of the Pipe ; and that thereupon the water is forced to move upwards , that it may fill up the Empty space which the Air hath quitted . But what , s●all we conclude then , that an insensible Body , such as the water is , can be so solicitously concern'd for the good of the Universe , that lest Nature should suffer a Vacuum , it rather mounts upwards , in downright contradiction to its own ponderosity ? Wherefore they speak with a great deal more of probability , who say , that in Weather Glasses the Air is condensed , and the water driven upwards by the incumbent weight of the Air. For in these Glasses the Elastick virtue of the shut up Air is very much lessened , by which means the Circumambient Air does more press the Water , than the Spring of the pent up Air can bear . XV. The Frost rarefies water . Water is dilated by Frost , and takes up more space than it did before , whereof we have an evident instance in a Glass-vessel with a long Neck , for when we expose such a Vessel fill'd with warm Water to the Winter cold , the Water will sensibly sink down or decrease , until it be come to a certain degree of Coldness : And not long after , it will begin to swell again and mount upwards till at last being bound to its good behaviour by Frost , it stands still and remains immoveable . The cause of this Rarefaction is , because the particles of the Liquor that are shut up in the Glass , before they begin to be Frozen by Cold , grow Stiff , by reason of the lessened Motion of the subtil matter , and take up crooked Figures ; and therefore cannot cleave so closely together , as when they were soft and pliable . And hence it is , that being vehemently shaken by the subtil matter , they cannot reduce themselves to so narrow a room as they had before , but require a larger wherein to dilate themselves . XVI . VVhy water freezing in a Glass , does sometimes break the Glass , and at other times not . It is worth our observing , that Frozen Water by reason of its Dilatation does commonly break the Glass-vials wherein it is contained , especially if the upper part be Frozen first : Because the Water being dilated by Frost , sticks fast to the sides of the Glass ; so that when the Water that is under it comes to be congeled likewise , it breaks the Glass , because it finds no room wherein to expand it self . But we find a quite contrary effect , when Water is Frozen in the bottom of a Vessel , first by Snow and Salt laid about it . For then the upper part of the Water doth by little and little mount higher , and by this means prevents the breaking of the Glass . XVII . VVhy sometimes very strong Vessels are broken by the freezing of the water that is contained in them . Wherefore it is no wonder , if sometimes great Vessels of Marble are broken by the freezing of the water that is contained in them , which CABAEUS tells us he hath been an Eye-witness of : Nay , what is more , Artificers sometimes find by Experience , that some of their Copper Vessels have been broken for no other cause . It is also an Observation of the Noble and Ingenious Mr. BOYLE , that the space of Frozen water hath been increased a ninth or tenth part more than it was before ; for else , how could it be that Iron Pipes , such as are made use of for great Guns , fill'd with water , and shut up with the greatest care and industry , should break by being exposed to the cold Air ? As hath been often experienced in England , and other parts of Europe . XVIII . VVhat the Reason is of the stiffness of the Particles of Ice . Neither must it seem any strange thing to us , that the subtil matter should not be able to bend the stiff particles of the water , when yet it hath force enough to move them ; forasmuch as a lesser Force is required to move Bodies , than to bind them : For we can easily with our Hand thrust a Bar of Iron out of its place , but find our selves altogether unable to bend it . XIX . VVhy the Ground that is frozen riseth higher . This will also inform us with the Reason , why the Ground that is frozen riseth higher , and bursts into many slits , to the great damage of tender Plants , whose Root s are often pluckt up ; except these Chinks in the Ground be cover'd either with Snow , or some seasonable warm Rain . For the Frost raiseth and distends the particles of the Earth and Water , and so makes them take up more room , than if they continued in their Natural figure . XX. Cold also Condenseth hard Bodies . As it is the property of Cold to Rarefie the Water , so it is endued with another quite opposite to this , which is that of condensing almost all hard Bodies . For as Heat rarefies Bodies , by making their parts that are circularly moved , to remove somewhat farther from each other ; so Cold , which is opposite to it , is the Cause why these Bodies are condensed , by keeping their parts at Rest , or by making them lose the determination of their Circular motion . Thus we find by Experience , that the most hard and compact Bodies , such as Metals , Glass and Marble , do sensibly contract themselves in hard Frosts , and become more brittle than before , and upon a Thaw return to their former state . XXI . Great Cold provokes frequent voiding of Urin. It is also from the same Cause that men , who swim in Cold water , or otherwise affected with the Circumambient cold Air , are almost continually provoked to make Water ; because the Contraction , which is an effect of the Cold , is communicated to the Bladder , and so causeth the list to make water . And therefore if the Hand of one that is fast asleep be dipt in Cold water , it causeth him immediately to let go his water . And for the same Reason it is , that those who come out of a warm Bed , as soon as their Bodies come to be exposed to the cold Air , find themselves to stand in need of making water : For as soon as the motion of the particles is allayed by Cold , and the parts thereby contracted , the same is also communicated to the Bladder , which thereupon endeavours to rid it self of its burthen . XXII . H●w it coms to pass , that Ice can be preserved whole and entire all the Summer over . Ice may be so preserved , as to retain its hardness all the Summer over , so as that it will scarcely melt when laid near the Fire . The Reason hereof is , because the pores of Ice are so narrow , that it can admit nothing , save only the particles of the most subtil matter , and consequently by excluding all greater particles , hinders the Heat from entring to the Inward parts , save only as the melting of the Outward parts make way for it . XXIII . Whence cold Bodies have the power of changing Water into Ice . Cold Bodies , such as the Air , often change the water they touch into Ice . The Reason is , because cold Bodies , by their Touch , do not only lessen the motion of the insensible parts of the water ; but also forasmuch as they contain many Icy particles , that is , smooth and stiff , they make the greater Globuli to pass out of the water into the pores of the cold Bodies ; and on the other hand , cause the little Globuli to pass out of the cold Bodies into the water . And forasmuch as these little Globuli , because of their remiss degree of motion cannot preserve the water in its fluidity , their motion by this means ceaseth , and by this Rest of their parts are changed into Ice . XXIV . Fruits and Stones too , are spoiled by Cold. Extream Cold is of that Malignity , that it is the Cause of the Corruption of Bodies , changing their Colour , and spoiling all their Comliness and Beauty . This we see not only in Eggs and Fruits , but also in Wood and Stone , which with Frost are sometimes made so brittle , as to be unfit to be used in the Building of Houses . Frost causeth this Putrefaction in Bodies , by dilating the watry parts wherewith the pores of Bodies are fill'd ; because by this dilatation the fibres and other solid parts , are broken or distorted . For nothing else can be understood by Corruption , but the Transposition of parts , when those which were joyned , are separated , and enter upon new Combinations . Hence it hath been observ'd , that when the Eyes of Animals have been frozen , the Crystalline Humour hath become of a white Colour , whereas it was transparent before . And from the same cause it is , that Men in Russia , and other cold Countries , do lose their Nose , Ears , and other parts of their Body , by the Rigour of the Cold , which mortifies and putrifies the parts , as before hath been said . XXV . Cold sometimes perverts the order of Parts . Such is the Power of Cold , that it sometimes perverts the Order and Texture of the parts of Bodies . For to what else can we impute , that great Beams of Timber in very Cold Countries , are to that degree frozen , that except they be thawed with a moderate Heat , they slit to pieces , and are altogether useless for Building ? Whence is it that Marle , laid upon the Ground to dung it , does never obtain its end more , than when it is frozen by extream Cold ? For the Moisture that was contained in its pores being by this means dilated , the Texture of its parts becomes dissolved ; so that whenever a good Shower falls , they are the more easily dissolved and mingled with the Earth . XXVI . The Cold preserves some Bodies from Putrefaction . And on the other hand , Cold preserves some Bodies from Putrefaction ; whereof the Swallows are an incontestable Proof , which being stiff with Cold , and in appearance no other than dead , are kept all the Winter over in many of the Pools of Poland , without the least taint of Corruption . The Reason of this is , because Cold , whose Nature consists in Rest , doth restrain the motion of the parts , and consequently hinders their separation from each other : For the dissolution of parts is the ready inlet of Corruption , forasmuch as thereby the whole Texture of the Body is disorder'd . In like manner we find , that all manner of Meats and Drinks , are better preserved in Winter , than in Summer ; and that Flowers and Fruits are kept for a long time untainted in Snow and Ice-Houses . Hence it is also , that Dead Bodies cover'd in the Snow , continue a long time without putrefying . In Iseland they customarily expose their Fish and Flesh to the Air , and when they are throughly hard and dry , preserve them untainted a great while without any Salt at all added to them ; because the Cold keeps their parts at Rest , and suffers them not to be separated from each other . CHAP. IV. Of Heaviness and Lightness . I. Two Bodies of unequal Bulk are moved with an equal motion , if they be Spherical . IF two Bodies of a round Figure , the one of Lead , the other of Wood , of the same or different bigness , should be let fall from the same Horizontal Line at the same moment of time , they will both of them come to the Ground at the same time ; neither will any diversity be perceivable in their Descent , which GASSENDUS faith he hath frequently observed . No other Cause of this uniform motion can be assigned , but the equal propension of the Celestial matter , to withdraw it self from the Center of the Earth . For tho' the said Matter doth always , in an equal space of time , and with all its force recede from the Center ; yet doth it not wholly exert its Power upon the Bodies it meets with , but only that part of it which answers , and is equal to the Body it lights on . And forasmuch as there is great difference in Bodies , in respect of their Composition : Some of them are more solid than others , having less pores , which can only admit the most subtil particles of the Matter of the first Element , and very few only of the Globuli of the second ; such as are Gold , Quicksilver , Steel . And others are more loose , or less solid , as Wood , and the like , which because they have more lax and open pores , do contain more Celestial matter , and therefore do more readily comply with the motion of the Heavenly Globuli . But to Apply this to the matter in hand : If the Celestial Matter , which is in the Leaden and Wooden Body , should be taken away from them , and that the Terrestrial Matter , which is mixed with the Heavenly Globuli , should likewise be removed from them , that which remains of the Celestial Matter in every subordinate Body , and exexerts it force upon the same , acts upon the remaining part of the Terrestrial Matter . For the Leaden Body being more solid , and consequently more able to resist , stands in need of a greater force of the Celestial Matter to press it downwards ; whereas that which is less solid , will be carried down with a less force , and consequently they will both of them come down to the Earth with an equal swiftness . For to the equality of motion nothing else is required , but that the Celestial Matter be proportionate to the Terrestrial ; which latter , when it is greater , the greater activity is required to overcome its Resistance ; and when it is less , a less force of the Celestial Matter will serve to push the Body downwards . II. Why no Body , except it be more heavy than water , doth sink in the water . Wherefore if a Body that is more heavy than the water , be put into it , it presently sinks to the bottom ; but if it be lighter , according to the different degrees of the said Lightness , either it swims on the top of the water , or only some part of it sinks into it . Thus an Earthen Vessel , filled with Air swims upon the water ; because it is lighter than it , being compared with a like proportion of it . Whereas the same Vessel , filled with water , sinks to the bottom , because compared with a like proportion of water , it is heavier than it . Hence it is that when a Cup , with the Mouth downwards , is put into the water , it doth not go to the bottom , because the Air contained in it is the same as if it were one Body with it , which being lighter than the water , must needs swim on the top of it , without sinking , till the water have entred the hollow of it . III. Why Gold doth not sink in Aqua-fortis . But this seems to contradict another Experiment , whereby we find that the Grains of Gold and Silver , tho' they be more heavy than so much of Aqua-fortis or Regalis , yet do not sink in it . But this is to be ascribed to the Saline Bodies which are diffused through the said waters , and which , as it were by a continual chain from the bottom to the top , do support each other , and so bear up the Grains of Gold or Silver . That this is so , may be confirmed in that , when common water is poured to them , after the dropping in of some drops of Oyl of Tartar , immediately the Grains of the Metal sink down to the bottom . IV. Liquors that have communication together , are more or less he●vy , according to the degrees of their height . Liquors that have communication by Pipes that contain them , do gravitate upon each other , not according to their Breadth , but according to their perpendicular Height . The Reason is , because these Liquors are like so many hard Bodies , put into the 2 Scales of a Ballance , whereof the one cannot go down , without causing the other to rise proportionably : For as these hard Bodies , tho' of unequal bulk , are nevertheless of equal weight , when their force is equivalent thereto , so likewise the Liquors contained in Pipes that communicate with one another , tho' they be of unequal breadth , yet must needs be of equal poise , when they are of an equal height . As for Example , in a Vessel of Liquor , clos'd on all sides except only 2 holes , if one of them be fourfold bigger than the other , and a spout adapted to each of them , the force of one pound of Liquor , forcing the little Spout , will equal the force of 4 pound weight , forcing the greater , which is supposed 4 times larger than the other , so that whatever proportion there may be between the holes , if the force applied to the said Spout , or Pipes be equal to the holes , the Liquors will be in equal poise . V. When Liquors are said to be of equal poise . When we say that Liquors that Communicate together are in equal poise , when their heights are equal , this is to be understood only , when the 2 Pipes are filled with the same liquor : For if the Liquors be different , their height will be in the same proportion as their weight : So that because QUICKSILVER is almost 14 times more heavy than water , one thumbs breadth of Quicksilver , will weigh very near as much as 14 thumbs breadths of water . VI. Why a Ball falling down from the top of the Mast into a Ship under Sail , yet falls down plum at the foot of the Mast . A Stone or Ball falling down from the Top of the Mast of a Ship in its full course , or tost up by one that rides on Horseback , falls down at the foot of the Mast , and on the hand of the Rider . The Reason is , because the Ball in its descent or ascent doth not describe a Right , but an Oblique Line . For though it seem to them who are in the Ship to be Perpendicular , yet is it indeed Crooked or Parabolical . Which any one that pleaseth may experience by casting up a Ball , or other thing into the Air , whilst he is riding in a Coach , for he shall find that the same , notwithstanding the progressive motion of the Coach , will fall directly into his hand ; but if he shall command the Coach to stop immediately , he will see that the Ball doth not tend directly upwards , nor fall down perpendicularly , but obliquely , and so describes , as it were an Arch , or crooked Line , the one end whereof will be there where he casts up the Stone or Ball , and the other end , where he catches the same again . But the Reason why the Ball appears to him , to tend directly upwards , is because that as much as he moves forward , so much the Ball is advanced also . Now the Cause why the Ball ▪ deviates from a straight motion to á cooked is , because its motion is derived from a twofold moving force , viz. from that of the Arm casting it upwards , and from that of the Coach or Earth imprest upon the Arm Horizontally . VII . Square Bodies do unequally descend to the Earth . All Bodies that are not of a Round Figure , are carried downwards by an unequal motion , as is evident in all Square , and other Ccorner'd Bodies , which tho' they consist of the same matter , and are of the same Bulk , yet differ in their motion , and unequally move downwards . This difference of motion is caused by their Figure ; which tho' it cannot be said to be the cause of their being prest downwards , yet doth much conduce to the diversity of their motion . For things that are Rough , do more slowly fall through the Water or Air ; and the broader their surface is , the greater resistance do they make against the Body through which they pass ; because they do not divide it uniformly and steddily . Thus Water and Ice , are kept hanging in the Air ; and greater Flocks of Snow congealed by cold , are more slow in their descent than drops of water . And it is for the same reason that Birds , with their spread Wings , keep themselves pois'd in the Air , viz. because the Air opposeth a greater resistance to a spread or plain extension , and hinders its falling down . VIII . Why the Bodies of some persons drowned , do after some time , rise up to the top of the water . Drowned Bodies do after some space of time rise from the bottom , and swim at the top of the water . This Effect is commonly attributed to the breaking of the Gall , but this I look upon only as a Fable . Wherefore I suppose that the true Reason why drowned Bodies rise to the top of the water is , because that the water entring into their Bodies , doth extend the Membrans thereof ; by the expansion whereof , many other Cavities also are opened , which by taking in the Air , are distended to a greater space : for such Membrans as these , because of the connexion of their parts , do reject the water , and can only be filled with Air. By which means the Bodies having got greater extension , and made more light are driven upwards , and so swim on the top of the water . IX . New laid Eggs are heavier than stale ones . In like manner it is the entring of Air , that makes Eggs to be lighter when they are stale , than when they are new laid ; for when they are newly laid they are top-full with their own substance , without any air ; but when they grow stale , some particles of the White and Yolk do exhale , and leave an empty space , into which the subtil Air enters , and it may be the more gross also , through the pores of the Shell ; so as that it must not seem strange to us , if they do not sink in the water as deep as they did ▪ when newly laid . X. Why the dead Bodies of Men swim with their Faces upwards , and those of Women with their Faces downwares . Accordingly also , the reason is evident why Female Bodies swim on the water with their Faces downwards , but those of Men with their Faces upwards . For Women having greater Bellies , and more Cavities in them , besides their Breasts , which are of a Spungy Substance , do take in more water in those parts , and therefore by the weight thereof are turned with their Body downwards : Whereas Men have more narrow Bellies , lesser Breasts , and strait Urinary Passages , with large Lungs and broad Shoulder-blades , which are the cause why their Bodies should swim with their Faces upwards . XI . How Men may best hinder themselves from drowning . Wherefore Men , if whilst they are swiming ▪ they find themselves in danger of being drowned , they can do no better for the avoiding of that danger , than to extend their Chest , and hold their Breath . And therefore Fishes , that they may swim with the more ease , have Bladders blown up with Air in their Bellies . And in like manner Bees , that they may the more lightly hover in the Air , have the Trunk of their Body fill'd with Air. XII . Burnt Bricks are heavier ▪ than they were before they were burnt . It is found by Experience , that burnt Bricks are heavier than unburnt . The Reason whereof is , because the pores of unburnt Bricks are wider , and filled with Air only after that they are dried : Whereas Bricks after that they are burnt , have many Cavities , of such a bigness as is fit to admit the particles of water that run into them , when they are exposed to the Air to be cooled . For there is always great store of these particles in the Air , and which intruding themselves into the pores of the Bricks , do encrease their heaviness . A confirmation whereof may be , that if the same Brick be weighed a● soon as it comes hot out of the Brick-kill , it will be found more light , than after it hath been for some time exposed to the Air ; and if afterwards it be put into the water , it will still be found more heavy , because the particles of the water which are entred into its pores , cannot get out . XIII . A Stick thrust into the water , mounts up with so much the stronger force , as the water is higher . If a Stick be plunged into the water perpendicularly , it riseth up again with the greater force , as the water is higher . The Reason of this is to be fetched from the nature of Gravity : For seeing that the Stick cannot move upwards , but only in as much as it is driven up by the water , it must follow that the greater the force of the expelling Body is , so much the more strongly the Stick must rise out of the water : Now this force is by so much encreased , by how much the weight of the expelling water is greater , by the force whereof it drives up the Stick ; and therefore it follows , that the higher the water is , with so much the greater force is the Stick driven upwards , and so much the swifter it ascends . XIV . Bodies descend by unequal numbers . The motion of Heavy Bodys is encreased according to uneven numbers : As if suppose a Stone fall down one Ell in the first moment of time , in the second it will fall 3 , in the third 5 , and in the fourth 7 , and so on according to the following uneven numbers . The Reason whereof seems to be , because the heavy Body , in the first moment of time hath by little and little acquired one degree of swiftness . Wherefore at the beginning of the second Time , having that degree of swiftness which it acquired , it will pass through as much space again , as it did in the first moment ; and moreover by little and little acquiring force by its weight , by means whereof it passeth also through an equal space to that which it measured during the first moment ; it must needs follow , that being now moved by both these forces together , it will pass through a triple space to that it past at first . At the third moment of time likewise it hath two degrees of swiftness , whereby it measures four times as much space as the first was . And in the mean time also by this innate Gravity , whereby it is continually pressed , doth acquire another degree , whereby in like manner it measures the space of another Ell. Being therefore thus furnisht with three degrees of swiftness , it passeth through 5 times as much space , as it past at the beginning ; and so afterwards continues to make its progress by uneven numbers , because the acquired degrees of swiftness always continue the same , as well as its natural heaviness . The Times being 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8. The Intervals or Spaces are 1 , 3 , 5 , 7 , 9 , 11 , 13 , 15. XV. Whether Dead Bodies be more heavy than L●ving . It is the common received opinion , that the Bodies of Animals , after death , are more heavy than when alive . The Cause of this change is commonly attributed to the want of Vital and Animal Spirits ; which being supposed , not only to be active , but also very light , do fe●m to diminish their Gravity . And forasmuch as Flame is lookt upon as the most light of all Bodies ; no wonder if some have ascribed the Lightness of Living Bodies to that Flame , which being diffused through the whole Body of the Animal , doth vivisie it , and is therefore called Vital . But however , notwithstanding , this Reason seems probable , yet I would have us rather trust to Experiment , than to this Reason . For Mr. BOYLE , for a trial , weighed a Mouse alive with a Packthread tied about its Neck , wherewith it was strangled immediately after , and when dead , was found to have lost of its former weight 7 / 16 of a grain . And the same thing was experimented by him in a Whelp , which alive weighed 10 or 11 ounces , and being strangled , was found 4 grains lighter . Which Experiments absolutely contradict the common opinion , that Dead Bodies are more heavy than living , and that by the loss of Spirits they acquire a new degree of Gravity . XVI . An Arrow ●●●nts ▪ and falls with the like swiftness . An Arrow shot into the Air upwards , descends from its point of Elevation with the like swiftness , as it was shot up thither by the Hand of the Archer , tho' not in the same manner . The Reason is , because an Arrow , in the beginning of its ascent , is not carried with more swiftness , than towards the end of its descent : Nor on the contrary more slowly towards the beginning of its Descent , than at the end of its Ascent , and therefore it is necessary that the Descent of the Arrow should be as swift as its Ascent . XVII . Square Pieces of different matter , being laid upon one another , descend equally . A square piece of Wood , and another of Lead being let fall severally , make an unequal descent , but if the Wooden Square be laid upon the Leaden , they will both descend with equal swiftness . The Reason why a Square Piece of Wood , and another of Lead do descend unequally is , because besides the force of the subtil matter driving downwards , there is a greater force in the square piece of Lead to resist the Air , than there is the Wooden Square . For if the square piece of LEAD be of 16 pound weight , and the Wooden Piece of 1 Pound , and the resistance of the Air as two , forasmuch as both the Cubes are supposed to be of the same magnitude , the Proportion of the Lead , must have the same proportion to the resistance of the medium , as 16 to 2 , and of the Wooden Cube , as 1 to 2. And therefore it is necessary that the Leaden Cube should fall down more swiftly : but when the Wooden Cube is laid upon the Leaden , so as that no Air comes between them ; the Gravitation of them both must needs be equal , since they have both the same Resistance , and the medium makes way for them both at once . XVIII . Why water mounts upwards through the Leak of a Ship. Water , like to Light Bodies , mounts upwards through the Leaky Bottom of a Ship. For seeing that Water is heavy , and presseth upon the Body it lies upon , it cannot be but that the water which flows about the bottom of the Vessel , must be thrust away by the water that lies above it . For the parts of water which are above , press downwards by their weight or heaviness , and force that which is under them , to enter through the Leak into the Ship ; so that if there was a Pipe fitted to the said holes , there is no question but the water would rise up through the same , as it doth in Fountains . XIX . Whence the different heaviness of Bodies doth proceed . Bodies are very different from one another in weight ; as Quicksilver is much more heavy than water ; neither are there any metals but differ from each other in this Quality . Thus Gold , if we will believe GASSENDUS , is 10 times heavier than Earth ; Lead , 7 times ; Silver , 5 times ; Pewter or Tin , 4 times ; Loadstone , 3 times , Whetstone as heavy again , &c. And forasmuch as it is frequently of great use , to know the weight or heaviness of several Bodies , I shall here subjoin a Table , exhibiting the just weight of different Bodies , according to the Paris weight that every Square Foot of them weighs . A Cubical Foot of Water — 72 Pounds A Cubical Foot of Wine — 70⅘ Pounds A Cubical Foot of Oyl — 66 Pounds A Cubical Foot of Tin — 532⅘ Pounds A Cubical Foot of Iron — 576 Pounds A Cubical Foot of Copper — 648 Pounds A Cubical Foot of Silver — 744 Pounds A Cubical Foot of Lead — 828 Pounds A Cubical Foot of Quicksilver — 977 1 / 7 Pounds A Cubical Foot of Gold — 1368 Pounds A Cubical Foot of Earth — 95½ Pounds A Cubical Foot of Bricks — 130 Pounds A Cubical Foot of Sand — 132 Pounds A Cubical Foot of Stone — 140 Pounds A Cubical Foot of Marble — 252 Pounds A Cubical Foot of Irish-slate — 156 Pounds A Cubical Foot of Salt — 117 2 / 2 Pounds A Cubical Foot of Honey — 104 ● / 5 Pounds A Cubical Foot of Wax — 68 1● / ●8 Pounds A Cubical Foot of Air — ● / 5 of an ounce . Pounds All which different degrees of Ponderosity of Bodies proceed from the various Make and Texture of their parts , whether inward or outward . For it cannot be questioned but that there be many Pores between the Particles of all Bodies , through which the subtil matter passeth continually from the abundance or fewness whereof the diversity of Bodies doth arise . Hence it is that Quicksilver is found to be so much heavier than Water , because it hath fewer of these Pores . For tho' we may imagin , that Water and Quicksilver consist of parts that are of the same bigness , and that their motions are alike , yet will their diversity clearly appear to us , if we consider the particles of Water to be like a soft and flack String , and the parts of Quicksilver , as having fewer Pores , to be like hard twisted Strings , that are much more stiff and hard . And the same is to be understood of those metals which are several times heavier than the Earth , since that all difference proceeds from the multitude or paucity of their Pores that admit the subtil matter , and do variously dilate and contract themselves in compliance with its motions . XX. Lead seems more heavy while it passeth through one Body , than through another . Lead sinks more slowly in the Water , than in the Air ; and a Log of Wood which is very burthensom to the party that carries it , rests on the surface of the water , and scarcely seems to be of any weight at all . A twofold weight may be understood to be in Bodies , the one Absolute , and which is not subject to any alteration , as being indistinguisht from the Body , and cannot be encreased , but by the addition of parts to it . Thus Gold is heavier than Lead , because its parts lie more snug and close together , and have straiter pores . The other weight of Bodies may be called Relative , which varies according to the different position of the matter ; and according to this notion of Gravity , Lead is said to be less heavy in the Water than in the Air ; because the water doth more strongly resist it , and by that means detracts much from its weight . Thus Wood swims upon the top of the Water , and doth not sink till it putrifie and corrupt , because the water is heavier than wood , and drives it up to the surface . For the parts of water , in the same bulk , are more than twice as many as the parts of wood ; and according to the Laws of Nature , Things that exceed in number , cannot be driven forwards by those that are fewer . Thus it hath been observed , that a Young man that weighed 130 pounds , did not weigh in the water above 8 Ounces . XXI . How we may know the different weight of Bodies . And on the contrary , if a heavy Body , as for Example Copper do much exceed water in ponderosity ( for it is accounted to be 9 times heavier than water ) it will lose a 9 th part of its Gravity . So that if Copper should be hung up by a string first in the Air , and afterwards in the Water , then the 9 th part of the weight is to be removed out of that Scale which hangs in the Air , that there may be an Equality . And by this means we shall easily perceive the true weight of every Body , and how much more heavier it is than the water . XXII . The different Heaviness of Bodies in the Air , and in the Water . So in like manner it happens that those things , which when weighed in the Air , are in equal poise , do lose the said Equality when put into the water , by Example Copper and Lead : For Lead put into the water , takes up a less space than Copper of the same weight ; and therefore when both these Bodies are weighed in the water , the Lead must of necessity out-weigh the Copper , with which it was in equal poise in the Air. And by this means it will not be difficult , to know what Metals , according to their bulk , are heavier than others . For if when they are weighed in the Air , neither of them exceed the other in weight , and that when put into the water , they are not in the same equal poise , that which out-weighs the other , according to its bulk , must be supposed heavier . XXIII . Respective Gravity may be changed ; but absolute cannot . Whence it follows , that the respective Gravity of a Body may be changed , whilst the absolute still continues the same : As suppose we put into one of the Scales of a Balance 100 Pounds , and in the other 50 , then the absolute Heaviness of the first weight will be always of 100 Pounds ; but the respective Heaviness will be only of 50 Pounds ; nay , it will be no more than 20 or 30 Pounds , if we put in the other Scale a Body of 80 or 90 Pounds . And for the same Reason , if we hang the weight of 100 Pounds at the end of a Standard , tho' the said absolute weight continue , yet may the respective be changed every moment ; according as the weighing Body is nearer or farther from the fixed Point , than that weight is , which is at the other end of the Standard . XXIV . Heavy Bodies increase their motion in falling . Heavy Bodies do not move equally in their Descent , but accelerate their motion ; as is evident in Stones , which according to the greater distance from whence they fall , make the stronger impression upon the things they light on . The Reason is , because a Body , at the beginning of its motion , moves but little ; for the subtil matter , which takes up its place , and which alone acts upon it , does not drive it downwards with that swiftness wherewith it endeavours to withdraw from the Center : But when the Body begins to descend , the subtil matter which is under the Body , and which with great endeavour strives to get above it , doth continually drive it downwards , and adds new degrees of Swiftness to those it had before . Or else we may say , that the motion of Heavy things is accelerated ; for that Bodies in their descent do acquire a new Force . For tho' they pass but slowly at the first moment of their motion ; yet at the second they must move more swiftly , because they retain their former motion , and receive an augmentation of it from the Action of the most subtil Matter . XXV . A Bullet driven through a Pipe or Bore , moves unequally . Thus when a Bullet or Pellet is by the blast of our breath driven through a Pipe , the Breath that proceeds from our Lungs , doth with repeated Onsets strike against it , whereby the first impulse imprest upon it is increased , and new degrees of Swiftness added thereto , whereby it becomes more vehement than it was at first . XXVI . Why Water falls down unequally through Pipes . Hence it is also , that the water which by Example is fallen down 3 Foot and an half , hath its Force once and half as much increased , more than that water which hath made a descent of one Foot only ; and that consequently the water which gusheth out of a Pipe fill'd to the height of 3 Foot and an half , must run twice and an half faster , than when it runs from a Pipe that is only full to the height of one Foot ; for that by that time it is come to the end of the Pipe , it will have acquir'd in its descent twice and an half more Swiftness , ●●an it would have got , if it had only made a descent to the 4 th parth of the Pipe. XXVII . The acceleration of motion is performed by the acquiring of a new degree thereof . Nevertheless , we must not imagin that the motion of Heavy Bodies doth increase continually , so as to have no bounds of its augmentation : For the Air resists the motion of Bodies , and blunts their force . Hence it is that a Bullet discharged from a Canon at a great distance , doth less hurt , than if it were shot nearer . And so likewise we see in the Pneumatick Engin , that when all the Air is pumpt out of it , heavy Bodies do fall with a great force at the first , and do exert the entire force of their Gravity : Like as Bodies cast up into the Air , in the beginning of their motion , do exert the whole Swiftness they have received . XXVIII . Why a Pail is not heavy in the water . A Pail full of Water , in a Well or Pool , loseth all its Gravity ; seeing that with the least force it may be removed , this way or that way , upwards or downwards , without almost any perception of ponderosity . The Reason is , because the parts of water , whilst they are mingled and hang together , do do not press one another ; for being all of them equally solid , they are all equally prest towards the Center by the Celestial matter ; and therefore the Pail , because of their equal pressure , is with the least force moved any way . In like manner a man that is sunk under water , is not sensible of any ponderosity ; because the Waters which lie upon him , are less pressed by the Heavenly Globuli that run between them , than the man himself , who is a more solid Body , and consequently less pervious to the subtil matter . Which is the Reason why Divers cannot come to the bottom of the Sea , without Weights hung upon them ; because they are equally pressed by the water that surrounds them , and as much born up by that which is beneath them , as they are thrust down by that which is above them . So that if a Diver being at the bottom of the water , could apply and fasten to his Arm or Thigh , the lower part of a long Pipe , the other end thereof standing out above the water ; so that the water could not come in between them , that part of his Body would presently begin to swell , it being free from the pressure of the water , and the Blood would run thither from the other parts of the Body . XXIX . A Body is more hindred in its descent , by Running-water . Hence it is also that a Body is more born up by Running-water . For the force of swiftly Running-water , doth make the ponderosity of the Body almost insignificant ; as we see in things that are thrown or cast upwards . Wherefore we find , that a Body doth more easily swim on the top of Running-water ; because there are many more parts of the water that resist its sinking , since continually other new parts succeed to support and keep it up . And this is the foundation of the Art of Swimming . CHAP. V. Of Taste . I. Hard Bodies , as Stone , Iron , and the like , are insipid . HArd Bodies , such as Stone , Iron , Lime , Harts-horn , &c. are insipid , and do not at all affect the Tongue . Because the particles of Hard Bodies cannot be separated from each other , and consequently be mingled with the Spittle in our Mouths . For when Bodies are so compact that they cannot dissolve and furnish those particles , which by the Vehicle of Moisture , may be conveyed into the pores of our Tongue , no wonder if they be insipid . For tho' Sugar , when melted , affords a sweet taste ; yet when the same is brought into solid and compact pieces , it affords no taste at all , because its parts cannot readily be separated , to impress any taste upon the Organ . So for the same Reason Pills , when they are swallowed whole , are scarcely perceived , because they do not stay long enough to have their outward parts dissolved , without which they cannot affect the Organ of Taste . Thus Turpentine boiled , and made into Powder , is lookt upon to be insipid ; because the more subtil parts of it cannot be diffused or mingled with the Spittle : Whereas in its Liquid form , it exhibits a bitter taste . So that Experience teacheth us , that nothing else is wanting in these Bodies , to make them Savoury , but only the division of their parts ; seeing that the Salts which enter the Composition of Glass , were savoury before they were compacted into that hard consistence , and that Metals reduc'd into very small powder , tho' before they were insipid , do now yield a most strong and intolerable taste . II. VVhy Bodies are distinguisht by Taste . Almost all Bodies are distinguishable by their tastes ; as Honey is sweet , Wormwood bitter , &c. The general Cause of all Tastes and Savours depends on the greatness and figures of the parts of savoury Bodies , which are capable of being diversified after an infinite manner of ways : And forasmuch as Bodies are in a manner all of them composed of parts that are of a different bigness and figure , it must not seem strange to us , that we meet with so great a variety of Tastes . III. Hot Meat is more savoury than cold Meat . This difference of Tastes , is sometimes caused by the various agitation of the parts of Bodies ; for we experience that hot Meat is more savoury than cold , because heat increaseth the motion of the parts of the Body ; and besides , it is certain , that the more any Body is moved , the more fit it is to move another Body that toucheth it : And therefore it connot seem strange , that Meats , when hot , are a great deal more savoury to us , than when they are cold . This is the Reason also why dressed Meats are far more savoury than raw , because the heat of the fire that dresseth them , divides them into lesser parts , whereby their figures are changed , and so make them to be of a very different Taste from what they were , when Raw. IV. Sweet things do sooner cloy the Stomach , than Meat of a sharp taste . Sweet things do sooner fill than sharp . Thus we find that Milk-meats , Sweet-meats , Butter , Honey , &c. do sooner satisfie our Appetite , than sowre and sharp things . Some suppose the Cause hereof to be , because Sharp things do afford little Nourishment , and much Excrement ; but this Reason seems of no force , because Digestion does not immediately follow upon the taking down of our food : But the Cause why Sweet things do sooner glut the Appetite , than sharp and sowre things is , because these latter are made up of parts whose surface is very rough and rugged , that is , which have many Angles or Inequalities , which make them fit to twitch and vellicate the Bodies they touch or apply to ; and by this their vellicating of the Stomach , do stir up the Appetite : Whereas Sweet things consisting of smooth Bodies , and such as gently affect the Stomach , without exciting of the Appetite , do presently fill and satiate . V. The Fire excites a sharp taste in Meat drest by it . Fire procures a sharp Taste to Meat ; for we find that Rost-meat doth with more sharpness strike the Tongue , and affords a more grateful taste . For it is evident that there is no food , but contains some Salt , which is in a manner equally diffused throughout the whole Mass of it . Whence it is , that when Meat is agitated by the heat of fire , some part of this Salt is carried to the outside , and exhales with the other Liquid parts , and constitutes that Smoak which we see proceeds from Meat that is a Roasting . But whereas they are only the insipid particles that fly into the Air , those of the Salts can scarcely rise 2 or 3 fingers high ; but that by their weight they are forced down again to the surface of the Meat , and there produce that sharp taste which we experience in Roast-meat . VI. Sowre and Harsh things set the Teeth on edge . Things harsh and sowre , set the Teeth on edge ; as unripe Fruits , harsh Wines , Verjuice , and the like . The Reason is , because the fixt Salts that are in these Bodies , being entangled in a gross Sulphur , compose together with it parts , whose Surface is bristled with many Hairs variously bent , which entring into the pores of the Tongue , shut up the parts thereof . VII . VVhy Bitter things do heat , and Sowre , cool . Bitter things , as Orange-Peel , Venice-Treacle , and many purging Medicins do heat ; but Sowre things , such as Juice of Orange , Sowre Grapes , &c. do cool . Because Bitter things consist of sharp Salts , and gross Oils , which being agitated together , do excite and preserve heat ; whereas the parts of Sowre things are long , stiff and pointed , and rather stop the motion of the fiery particles , than promote it , and for that Reason are esteemed of a Cooling Nature . VIII . Why unripe Grapes and Fruits are harsh . Unripe Fruits seem very harsh at the first taste , and cause a Roughness on the Tongue ; but afterwards they turn sweet , and acquire a pleasant relish . The Reason is , for that Fruits , before that they are ripe , do consist of longish parts , which by their motion do , as it were , cut the fibres of the Tongue , and contract them ; and afterwards they grow ripe by means of the fire or the heat of the Sun , which digests their raw Juice , and by exhaling the Heterogeneous parts , reduceth it to sweetness . For it is evident , that there is a continual resolution and division of parts in Fruits that tend to maturity , by means whereof they lay aside their hardness and harshness , and after perfect Concoction become soft and pleasant . IX . A Tongue that is either too dry , or too moist , can taste nothing . A Tongue that is parch'd and over-dry , hath little or no taste ; and so likewise when it abounds with over-much moisture . The Reason is , because Taste doth not only consist in moisture or driness apart , but in a mixture of them both . And therefore it is no wonder , if a too dry and parched Tongue , cannot perceive the taste of solid food , seeing that the same cannot be macerated or dissolved without moisture , which is necessary in order to the Sense of Tasting . For the Tongue being a spongy and porous part , stands in need of moisture , which is the vehicle of Savours . Moreover , in a dry Tongue the fibres are too much contracted , an● thereby are made unfit to receive that affection , which the savour of things doth impress on it . And on the other hand , a Tongue too moist , i● not fit for the reception of Tastes , forasmuch as the Tongue , which is loose and spongy , having its pores already filled with Humour , cannot well admit that which conveys the Savoury particles of the food , and by this means cannot perceive the taste of it . And it is for this very Reason , that we cannot relish Wine after having eaten some sweet thing , and that in order to recove● our taste we eat salt meat , that may open the pores of our Tongue . X. Why we find no relish in those things which we eat often . Some find that they lose the relish of those things , which they feed too frequently upon , and that either because these common Aliments do leave some of their particles in the Tongue , which render the little Nipples of it immoveable ; or , because the Soul gives less heed to those motions that are ordinary and common , than to those which are new and unfiequent . XI . Why we can better discern Tastes in the Morning . Tastes are better discerned in the Morning , especially before we have eaten or drank any thing , that can byass the Tongue to a mistaken Verdict . Because at that time the Tongue is like fair Paper , and as yet unting'd by any Savours . For that which receives , must be free from a Taint of the thing received . Which is true not only in the Taste , but also in Hearing , Smelling , and all the other Senses : For by right , the Sense of Hearing is sharpest , and Blind men do better retain things than others . XII . Persons sick of the Jaundise , cannot rightly discern the taste of things . Men sick of the Jaundise , suppose all things to taste bitter . The Reason is , because the Gall is diffused through their Tongues , which infects their Spittle ; for the Gall consisting of sharp particles , doth so corrupt the Spittle , that it communicates a bitterness and an ungrateful taste to all the Food that is eaten , as if something of Soot were mixt with it . The Cause of which Depravation is , because the Raw humour , which runs through the Veins and Arteries , betakes it self to the Tongue , because of its loose and spongy Flesh , and filling the pores of it , vitiate the taste of all received Aliments . Which is the Reason why Physicians commonly order their Patients to put out their Tongues , that they may view the colour and disposition of it ; for seeing that that Member , proportionable to its bulk , contains abundance of Blood , it accordingly also admits a considerable deal of the morbifick Matter , which there discovers it self by its Colour , and consequently also the Sickness which disturbs the Body . XIII . Whence the Harsh taste of Verjuice doth proceed . The Juice of unripe Grapes constitutes that which is called Verjuice , which is of a sowre and somewhat harsh taste ; whereas the Juice of ripe Grapes is sweet , and with a pleasant briskness accosts the Palat. The harshness of Verjuyce proceeds from the Roughness and Inequality of its parts ; for because the Juice of unripe Grapes is not sufficiently concocted , they retain a great deal of Crudity , which is owing to their long and inflexible particles . Hence it is that the Verjuice which is made of Crabs , is a good Medicine to help the weakness of the Eyes ; because its particles being like so many little grains of Sand , do wipe off the filth of the Eyes , and by this means restore the Visive faculty to its former clearness . And the same Reason may be given of the Water of some particular Fountains , which by reason of their Acrimony do not only purge the Eyes , but also the Optick Nerves , that so the Rays of Light may be the more freely transmitted . XIV . Why New Wine is sweet . But New Wine is sweet , because it hath been sufficiently decocted by Heat , and all its parts are smooth and even . And as to its muddiness , that is only caused by those Heterogeneous parts , which are not yet separated from it ; which as soon as they are either precipitated to the bottom , or raised up to the top , by fermentation , the Wine becomes elear , by admitting the Heavenly Globuli . XV. What is the Cause of that variety of Tastes which is in Fruits . All Fruits are distinguishable by their taste , some of them having a harsh bitter taste , others a harsh sowre , other a sowre , and all of them a sweet taste after they attain to their full maturity . Book . 2. Part. 2. Chap. 6 ▪ G. Freman . Inv. I. Kip ▪ XVI . VVhence it 〈◊〉 that the same Food is not equally grateful to all . Nothing is of more obvious Experience , than that the same food is not alike grateful to all ; and that frequently what is very pleasing to some , is very distasteful to others . Which proceeds from the different disposition of the Organ . For they whose Tongues are furnisht with stiff and less plyant fibres , will be less exact in discerning the Taste of things , because they stand in need of a greater Force to move them : Whereas those whose fibres are more delicate and tender , do more exactly distinguish them , because the least Vellication is sufficient to affect them . Somewhat like that which is found in the hands of those that are grown hard by much labour , which without any sense of Pain do handle Briars and Thorns , when those that have tender Hands cannot , without great pain , so much as touch them . XVII . VVhy the same thing seems sometimes to have a different Taste . Hence it is that sometimes the same person , upon some alteration in the Organ of his Taste , caused by Age or Sickness finds a different Taste in the same Objects from what he formerly perceived in them : For the Texture of his Organ being changed , the particles of the Bodies do no longer accord with it , but cause a kind of rout and confusion in it . And it is for the same Reason that young Women , and such as are with Child , do sometimes take delight in some Meats which they formerly abhorred . XVIII . VVhy different men , affect different Sawces . Whence it is that different men are pleased with different Sawces , and that there must be different Sawces to please the same person at different times and seasons . For one loves sweet Sawces , others sowr ; one man delights in the taste of Wine , another abhors it ; and the same person that is greatly pleased with the taste of it , when he is in Health , doth loath it when he is sick of an Ague or Fever , because the fibres of his Tongue are otherwise disposed than they were before . This is visible in Girls , and Women big with Child , especially in the first Months after Impregnation , who frequently delight in , and long for those things which before they abhorred , or at least had no inclination to , forasmuch as the particles of those things enter more smoothly , into the pores of their Tongues than before . XIX . The Mistake of some Peripateticks . From what hath been said , we have reason to conclude , that it is a great Errour to place the taste or savour of things in the savoury Objects , as some Peripateticks do : For besides that in so doing they ascribe to an Inanimate Body , a way of Existence which doth not agree with them , the consequence of this Opinion is , that 2 Men would never be able to find a different Taste in the same Object , which is contrary to Experience . So that we must conclude , that the Power of perceiving Tastes belongs to the Soul , as well as that of feeling Pleasure or Pain ; and consequently , that Taste is nothing else , but a certain perception or sensation , which is exerted by the Soul , by the motions which Meats produce in the Nerves of the Tongue . CHAP. VI. Of Smelling . I. Animals ▪ by their Sense of Smelling , discover what is good or hurtful to them . SO great is the Affinity between Taste and Smelling , that they are produced and affect the Organs almost in the very same manner . For we find that Animals hunt out their Prey by their Scent , and by the same distinguish what is good , from what is hurtful to them . Thus the Smell of Catmint allures Cats ; Fennel , Serpents ; Bazil , Scorpions ; Rue , Weezels , &c. As on the contrary , they avoid what is harmful to them by the help of the said Organ . Thus Serpents flee from the Scent of Galbanum , Scorpions abhor Wolves-bane ; Flies , Brimstone ; Goats , Bazil ; and Ants , Organy . The Cause of this Sympathy , or Antipathy , must be derived from the Organ of Smelling ; which receives the diversity of Odours , according to the different affection and disposition of its fibres . For if the Steam that proceeds from an odoriferous Object , be delicate , and doth smoothly affect the Nerves of the Nostrils , it will cause a grateful Odour ; but if the said Nerves be more rudely shaken or vellicated , this gives an unpleasing Scent . For Odour is nothing else , but the thin and insensible parts of Bodies , which being separate from each other , fly up and down in the Air , and being by the drawing in of our Breath received into our Nostrils , do excite a motion in the Extremities of the Nerves . So that the diversity of Motions , produceth difference of Odours ; and as the fibres of the Organ are more softly or roughly struck upon , accordingly are they diversified . For this Reason we find , that Roses , Musk , Ambergris , and such like , afford a sweet Smell ; because the Steam that proceeds from them , consists of subtil and flexible Filaments , which easily enter the Organ , and without any roughness are communicated to the Nerves . But Brimstone affords a strong and unpleasant Smell , because of the Ruggedness and Unevenness of its filaments . For Brimstone being very easily inflammable , we must suppose it to consist of many fat Steams , which being mingled with a sharp Matter , do make the filaments rough and prickly , which cannot but affect the fibres of the Organ unpleasantly and painfully . II. How sweet Scents may be produced from strong and unpleasant things . And on the contrary , when the strong Scent of Brimstone , is dulled by the joyning of some other Body with it , a grateful Odour is produced . Thus tho' Civet in a bulk , and by it self , have a very strong Scent ; yet if 3 Grains be mixed with 10 Grains of Ambergris , and one Drop of the Juice of Lemons , and ground together , it will produce a most rich and grateful Perfume . In like manner , Musk , when it is by it self , yields a strong and overcoming Scent ; but being mixt with some of the Spirit of Roses , it affords a most pleasing and delightful Smell . And they who bring Musk from the Indies , after that the Smell of it is in great part exhaled , do wrap it up in the Skin of the Animal from whence it is taken , or in Bladders , and hang it up for some days in some stinking place , having first made several Holes in the said Skins or Bladders ; and by this means recover the Musk to its former fragrancy . Forasmuch as by this Fermentation , its parts are so separated and attenuated , that they cannot but gratefully tickle the Organs of Smelling . III. How some Bodies that have little or no scent , may be made odorous . And it is for the same Reason , that the Oyl of Roses , drawn by distillation , being put into water in a considerable Quantity , hath almost no odour at all , but being mingled with the Salt of Tartar , it makes a fluid composition , whereof some part being put into water , yields a very great and sweet perfume ; the reason whereof is , to be a ascribed to the Salt of Tartar , which being a very powerful Alkali , exalts the Oyl , and renders it more volatile , and consequently more proper to be attracted together with the Air in Respiration . IV. To the perception of Odours , some distance is required . When a Man is too near to odoriferous Bodies , he cannot so well perceive their Effluvia . And therefore it is that Flowers do smell more sweetly when they are at some distance from the Organ , than when they are too near it . The Cause is , because the smell or odour of Objects doth not consist in their more gross and moist , as before hath been said of Taste , but in their thin and dry parts ; and therefore he who is too near to the odorous Object , doth not only take in the steams that proceed from it , but also those that come forth from the Earth . But if he be somewhat further at a distance from it , he receives nothing but the more vivid and subtil steams , because the Grosser cannot go far off , but soon fall down to the Earth again . Wherefore some distance is necessary , that the more brisk particles of the odorous Object , may freely and purely exert its power , and excite a grateful smell . V. Perfumes are least perceived when too near . Hence it is that Perfumes cannot be so powerfully perceived when we are too near to them ; for they consisting of nothing else but a steam , flowing from the odoriferous Body , by passing through some interval it becomes more purified and discharged from its more thick and terrene particles , which dull and allay the sweetness of the odour . As we find that Wine mixed with Water is less tasted , because water doth break and allay its force . VI. Plants in Syria and Arabia do far excel ours in smell . Plants in hot Countries shed a far more fragrant odour than in cold . Thus it is known that in , Syria , Arabia , the East-Indies , &c. many Spices are produced , and that the Fruits of the Trees that grow there , have more lasting and pungent odours . The Reason is , the heat of the Sun in those Countries , which conduceth very much to the briskness and sweetness of odours : For by means thereof the Alimentary Juice of Plants becomes exalted and depurated in the highest degree ; and thereby prepared to yield copious matter for those odoriferous steams proceeding from the Leaves , Fruits , and Flowers of them . For it is certain that odours consist of Sulphur or Salt , and that those Bodies which abound with these , do shed more abundant odours . Because heat is a great strengthner and exalter of the Sulphureous Parts , causing them to exert their force with greater efficacy ; for after that the watry Humour is separated , the remaining substance is more throughly concocted , and consequently yields a more fragrant odour . And therefore in order to the preserving of this Fragrancy , we make use of Oyl wherewith to cover them , or else shut them up in Boxes , to hinder the vapour from exhaling continually . For we find that all odorous Bodies do smell more strongly when they are hot , than when cold ; in the Day time , than in the Night ; in the Spring , than in Winter ; and in Summer , than in the Spring , because then their parts are in greater motion . VII . Heat conduceth very much to the sweetness of Odours . For the same Reason it is , that Fruits attain a more grateful scent by being prepared with fire ; and that all things smell sweeter during the heat of the Summer , than when they are congealed with cold ; because then their Sulphureous Parts are lockt up : whereas in hot Seasons the same is agitated and diffused through the Air. And therefore we find that there are very few Seeds that afford any sent from them : for being of a very compact substance , and consisting of a clammy substance , they do not easily send forth any Effluvia . And on the contrary , we find that Contusion or Bruising is a great means to excite that sweetness of odour which is found in dry things . Thus the pricking of the Rinds of Citrons or Oranges , renders them much more odorous . And Spanish Wax , which is without odour before it be put to the Fire , becomes very odoriferous , by the resolution of some of its parts into Smoak . The same may be said of Incense , Myrrh , and many other odoriferous Gums and Drugs , which do not exert their fragrancy till they be dissipated into Air. VIII . What is the Cause of that sweet or strong smel● which proceeds from some persons . All Men do not smell alike , for some yield a very fragrant and pleasing odour , which Historians relate concerning Alexander the Great , whose Sweat was very pleasing and grateful to all that smelt it . Whereas others stink , or scent very strongly ; which is observed of Flat-nos'd Persons , who are commonly tainted with loathsom steams proceeding from them . A Sweet Odour proceeds from those persons , whose Alimentary Juice is exactly and throughly concocted ; which then happens , when by the agitation of the Body , the Pores are opened , to let out the particles of any crude Humours . The same may also be an effect of the Temperament of Men , as when Heat is greatly predominant in them ; for if the said Heat be free , and is disintangled from any superfluous Humour , it cannot fail of producing a sweet odour . Now that such was the Temperament of Alexander the Great , is evident from his inclination to the excess of Anger , the continual exercise of his Body , and the smoothness and thinness of his Skin . But when on the contrary , the Alimentary Juice is not well digested , or by some means or other becomes depraved , this must needs produce an abominable and loathsom smell ; such as we perceive commonly in Flat-nos'd Persons , whose steams are observed to be very nauseous ; and that because the Pores , through which the Snot or Snivel is conveyed from the Brain , is too much straitned , and by reason thereof putrifies and corrupts there . For Corruption is the most genuine cause of Stinks . IX . Of the various Vertue and Nature of Odours . And accordingly some smells are very refreshing , and conducing to Health , whereas other are very inimical to Nature , and our Vital Spirits . Thus we are told that there is a People in the most remote Borders of the East Indies , about the Springs of the River Ganges , called Astomi or Mouthless , who ( if we may give credit to some Historians ) live only by the odours they take in from Flowers and Fruits . So likewise it is notorious , that there be many Scents which recall Persons that are in a Swoond ; and more particularly the smell of Vinegar : And every body knows how much Cats are delighted with the Herb Nepota , or Catmint ; which acceptableness and congruity proceeds only from the odour of these things . And on the contrary , some smells are the cause of distraction , as it is related of the Sabaeans , that they used to be stupified by odours : And of Cats , that they became mad by the smell of some Ointments : because these exhalations cause so violent an agitation in the Organ , that thereby the natural Temperament of the Brain is destroyed , whence proceeds that tumultuary confusion of the Spirits . X. Why distilled Waters lose their fragrancy , when the Flowers from whence they are drawn , are in their Prime . Rose and Orange-flower Water , with other such like Waters distilled from Flowers , keep their sweet smell all the year , except only when the Flowers , from whence they are drawn , are most fragrant , for then they lose their Scent . The Cause whereof is , not because those Waters are indeed destitute of all Odour at that time : but the Earth then abounding with Flowers , which diffuse their steams throughout the whole Air , the Organ of Smelling is so much charged with them , that it cannot be affected with the smell that proceeds from those waters ; and upon this account they are supposed destitute of all smell . XI . The Fragrancy of things may be separated from their gross Body . Tinctures , Essences , &c. of Roses , Cinamon , and such like odoriferous Bodies , retain the same smell , which the things themselves had before . The Reason is , because the nature of Odour consists in a certain texture of Sulphur and Salt. By Sulphur , the Chymists understand a Fat and Oily Substance , which according to its various mixture in various Bodies is different . Now since this Substance may by Chymical Art be extracted from Bodies , it must not be thought strange that it retains the same Odour , which the Bodies themselves before did . XII . They who are troubled with Cold , lose their Smeling . They who have got a Cold , do in a manner perceive no Odours at all . Because the Rheum doth so obstruct the Pipes of the Olfactory Organ , into which the Odorous Steams use to insinuate themselves , that they can no longer enter them . For in this case the obstruction sometimes is so great , that there is no passage left in the Nostrils to draw ones Breath ; and therefore it is no wonder , if the Nerves , being filled with this humour , cannot admit the Steams proceeding from odorous Objects , or if they do , yet cannot receive any due impression from them . XIII . Why we perceive the odours of things better in the Summer than in the Winter . In Cold Weather , odorous Objects do more weakly affect our Organ of Smelling . This is , because in Winter time the pores are obstructed and contracted , so that their odorous Steams do not then break forth from the Bodies to which they belong . To which may be added , that the Air is thicker and more gross at that time , which therefore the odorous Steams are less able to penetrate . Hence it is that Congealed Bodies shed no fragrancy or smell at all , because by reason of the obstruction of the Pores , the Steam cannot disperse it self in the Air , nor affect the olfactory Organ . Whereas on the contrary , in the Summer-time , smells are much better and strongly perceived , because the intense heat doth then agitate and excite the particles , and sends them in greater abundance to the Organ . We observe also , that according as the wind is for or against us , so we either smell odorous Objects , or not smell them ; for when the wind comes from those Objects , the smell of them doth more strongly affect the Organ ; whereas when it is contrary , it carries the said odorous Steams from us , so as that we perceive no Scent at all . XIV . Dogs exceed Men in the quickness of Smelling . Many Beasts excel Men in the sense of Smelling ; and more especially Dogs , who not only exceed Men , but all other Beasts in this regard . The reason whereof may very probably be ascribed to their Organ of Smelling , as abounding with very fine and subtil Fibres , and those more fitly disposed for the reception of Odours . For it is observed that the Olfactory Organ of Dogs is drier than that of other Creatures ; because their Snot doth not flow the ordinary way , but through some Pores , which may distinctly be perceived at the end of their Noses . Or else the cause of this more quick Scenting that is in Dogs , may be attributed to their not being subject to those gross Fumes arising from the Stomachs of Men , who feed upon such various sorts of Meat , which hinder the reception or perception of the subtil odorous Steams proceeding from Objects . Hence it is that Dogs , that are too much conversant in Kitchins , and are too much fed , do by degrees lose their Sagacity , and become much inferiour to those who are kept shut up , and are only fed with Food , proper for hunting Dogs . XV. Why the Sense of Smelling is weaker in Men than in Beasts . Neither is there any question to be made , but that if Men lived only upon vegetables , they would far excell others in this Sense , who fare more deliciously , and pamper themselves with Flesh and variety of Meats . Thus Sir Kenelm Digby , in his Treatise of Bodies , relates this story of one John of Liege , who fleeing into the Woods to avoid the violence of some Soldiers , lived there many years , feeding all the while on Wild Apples , Acorns and Roots ; who after he had been catched by some Country People , after having attained the use of speech , he declared to them , That as long as he lived in the Woods , he could by his smelling find out his Food , and distinguish that which was good , from that which was hurtful ; that by the same he was aware frequently of Hunters that had a design to take him , and by this means oft escaped their Hands . Which Example makes it evident , that the quickness of the Sense of Smelling is spoiled by the vapours of divers and dainty Viands ; and the chief reason why Men are inferiour to Beasts in this Sense is , because their Diet is not so simple as theirs is . XVI . Some Animals are signal for their quickness of Smelling . It may also be allowed , that many Animals do exceed Man in this Sense , because of the vivacity of their Organs ; as it is evident in Ravens , Vultures and Dogs , which by their Sagacity pursue their Prey , or follow the footsteps of their Masters : Tigers , who by their smelling , follow them who have taken away their Whelps : Roughfooted Pigeons , who by the same sense , fetch back their Young , tho' carried into some House above 200 paces distant from them . Neither is it any contradiction to what is here alledged , that Dogs in hunting , are sometimes at a loss , beecause this only proceeds from the great distance either of time or place in which the Odour is diffused , or when the odorous Steams are carried away by the Wind , or being mingled with other Steams produce a confusion . XVII . How some odorous Bodies may retain their Sent for a long time . It is certain that odorous Bodies by continual expiration , become flaggy and are consumed ; because their substance is continually wasted and dispersed by the exhalations that proceed from them ▪ Yet as to the great , and almost inconceivable subtilty of these Fumes , we have a very pregnant demonstration , in a piece of Ambergris , which after a continual expiration of odorous Steams for several years together , doth to our senses appear to be of the same Bulk . So that it may seem probable , that these Fumes do by a continual Circulation return to their source again : Much in like manner as we have shewed in our Institution of Philosophy , that the Striate Matter moves circucularly about the Loadstone ; according to which Hypothesis it may be made out , that an odorous Body may continually shed its exhalations without losing ought of its substance by that means . CHAP. VII . Of Sound . I. Liquid Bodies when dasht together , make a noise . SOund doth not only proceed from hard and solid Bodies , but also from fluid , and which because of the pliablness of their parts , do give way to the motions of other Bodies . For the Air , when it is struck , conveys a Sound to our Ears ; the Waves when they dash against each other , cause a great noise ; and all Waters , according as they run through a plain Channel , or are interrupted with Rocks and Stones , make a different impression upon the Nerves . The Reason is , because the parts of the Air , as well as of other liquid Bodies , by their beating against each other , become divided into innumerable small particles , which being most swiftly moved , and dashing against each other , must needs produce a Sound . For a Sound is nothing else but a trembling and waving motion of the Air : And as we see that by the throwing of a Stone into the water many Circles are formed , which uniformly extend themselves to the Shoar or Banks ; so likewise the Sound that proceeds from Bodies that are struck , is by reciprocal vibrations propagated through the Air. II. How a Sound comes to be dispersed round . Which will more clearly appear in the Figure . Let there be supposed a String that is struck , which may be conceived as a Cylinder , whereof the semisection will make an half Circle , MBR , so as that whilst it restores it self , every one of its points are moved with a strait motion , and by parallel Lines , as AB , PC , OD , NE , MF , Let us then suppose in the several points of this Section some particles of pure Air , or Moisture , which may be considered as Globuli , or small round Bodies L , K , I , H , G , &c. which touch the Section in the points BCDEF : Now if right Lines be drawn from the Center A , through the foresaid points , they will terminate in the Centers of the Globuli ; and if one Globe fall upon another , it will move the same by a Line joining the Centers of both together : So that the Arc MB , of the Section of the Circle , diffuseth that most light matter according to the Angle MAB , and in like manner the Arc BR , according to the Angle BAR. III. Why the Breath that is sent out of our Lungs is not heard . Thus we observe that our Breath , when gently sent forth from our Lungs , is not heard , nor when it is easily blown through a Pipe , because there are none of those frequent wavings , between the sides of the VVind-Pipe and the Pipe , which are necessary to convey the stroaks of them to the Organ . In like manner , as we see that a Hammer gently applied to the Anvil , doth produce no sound at all , because the Air is not sufficiently beaten back or undulated , as to produce that frequency of motion that may reach the Ear. IV. Why Musical Instruments are commonly hollow . Musical Instruments are commonly made hollow , and often approach to a Sphaerical Figure . The Reason is , because the passing and repassing percussions of the Air , are multiplied in a Hollow , and therefore do the longer detain and please the Ear. For in hollow Bodies , not only the outward Air is agitated by frequent concussions , but also the Internal . The depth also of Musical Instruments is of great use , because then Sounds are the better mingled in them , and one part being agitated , doth more easily make the other parts partaker of the Motion . V. The make of the Instrument , and the Place , do conduce to the variety of Sounds . Thus Hawk-bells , by reason of the slit and holes they have on their sides , do yield a greater Sound , than when in the open Air we strike upon any Brass Vessel ; because the Sound of the Bell being pent up within the sides of it , doth break forth whole and strong . And it is for the same reason , that Musick within doors in cold weather is more agreeable , because then the Strings or VVood of the Instruments are more wrinkled , as it were , and become more hollow and porous . And on the other hand it is observed , that the Sound of Musical Instruments is not so distinct in Chambers that are hung , as in those that are VVainscotted , because the Sound doth more briskly rebound from a smooth and hard body , than from that which is soft and yielding . For indeed all soft Bodies are less fit for the generation of Sounds , and do easily transmit them . And it is for the same Reason , that the Sound of hot Iron is more dull , than that which is cold , even because it is more soft , and the parts of this latter do yield more frequent vibrations . VI. What is the Reason that a Deaf Man can perceive the Sound of a Lute , whilst he holds his Teeth upon the Neck of it . A person that is Deaf may perceive the Sound of a Lute , or any other Instrument , whilst he holds the Neck of it between his Teeth . Some have conceived that this is to be attributed to some conveyances , reaching from the Mouth to the Ears , which carry the Sound thither , and impress the same affection upon them , which is transmitted by the Organ of Hearing . But that this is not so , is apparent , because the same effect doth not follow when we hold our Mouth open . Besides , if this were sufficient , why might not sounds be perceived by the touch of the Forehead or Nose ; seeing that from these parts there be passages to the Ears , and an equal communication between them ? Book . 2. Part. 2. Chap. 7. G Freman . Inv. I. Kip Sculp VII . Why a grating , skreaking Noise is very offensive to the Ears . But of all Sounds , none are more ungrateful to the Ear , and indeed intolerable , than the skreaking Noise of a Saw , or the filing of Iron . The Reason whereof is , because the particles of the Air , which strike against the Ear , do , because of their irregular figure , too violently vellicate the fibres of the Auditory Nerves , so as that thereby they are in danger of being broken , and sometimes break actually , whence that troublesom and painful Sensation doth arise . The same also , tho' in a less degree , is caused by the hearing of false Tones , which is extreamly offensive to a Musical Ear. And accordingly , by means of the foresaid Sounds the Teeth are sometimes set on edge ; forasmuch as by this inordinate undulation of the Air , the Nervous fibres which are at the Root of the Teeth , are in a manner loosed and separated from their former stability . VIII . What is the Reason why , when the one of two Unison Strings are struck , the other trembles . If 2 Lutes or Citterns , whose strings are made Unison , are placed at some distance from each other , when the strings of the one are smartly struck , those of the other tremble also , and that so strongly , that they will shake off a bit of Paper laid upon them . The Reason is , because the string being struck by a certain number of Vibrations , shakes the Air , which lighting upon the Unison strings of the other Instrument , doth shake it likewise . And this more especially , if the said strings be consonant in an Eighth or Fifth , for then their Vibrations will be less confused , and agree in their certain and frequent Intervals . For in an Eighth , all the Vibrations of a more lax and longer Chord or String , agree with a Second , Fourth and Fifth of a more stretched and shorter Chord ; in a Fifth , with a Third , Sixth and Ninth , and so of the rest . Wherefore this Trembling motion never follows where two Strings are differently tuned : Whereas Concords do not only excite each other , but others also , by reason of the similitude of their motions , and do so assist each other , as mutually to impart the same Affections . As may be experienced in any Musical Instrument . IX . Whether there be such a thing as white Gunpowder , whereby Guns may be discharged without Noise . It is a common Report amongst the many , that there is a White Gunpowder , with which Guns may be discharged without giving any Report . This , tho' very confidently asserted , appears to be a meer figment . For it is impossible that the pent up Air should be able to break forth without making a Noise : For that which is of such a force as to be able to drive a Bullet with as great swiftness , as the Flame breaks forth from the Gunpowder , must needs strike the Air with a like force , and consequently produce an answerable Sound . X. Why Men and Birds only can give forth Musical Sounds . Of all Animals , Men and Birds only are able to make Musical Sounds . The Reason hereof must be fetch'd from the structure of the Throat and Wind-pipe , the Rings whereof in Men and Birds are capable of being contracted and extended . For there is a double recurring Nerve in the Wind-pipe , which turning round about it , doth by the help of some of its Branches move the Rings of it downwards ; and forasmuch as the same is terminated in the Nerve , proceeding from the Plexus Ganglioformis , it moves the folds of the Wind-pipe upwards . So that whilst the Rings of the Wind-pipe , by means of the recurrent Nerve , are moved downwards , it causeth a deep or bass Tone ; which becomes more high and shrill , when the said Rings are raised higher by the Branches of the 6 th pair of Nerves , disseminated in the Wind-pipe ; because the Wine-pipe being strained by this means , doth in a manner break the Sound that passeth through it . XI . The Smoak of a Candle , is agitated by the motion of the Strings of a Musical Instrument . If a Lute be play'd upon near a Smoaking-Candle , the same motion of the Strings will be communicated to the Smoak . The Reason hereof is , because the trembling Vibrations of the Strings do move the fluctuating Air , by the reiterated onsets whereof , the Flame ( which of it self is very moveable ) begins to be shaken , and to conform it self to the motions of the Strings . Hence it is , that when a Ray of the Sun is let in into a dark Room , and a Musical Instrument be plaid upon near the said Ray or Sun-beam , the Motes in the Sun will be seen to leap and skip in the Air , and , as it were , to dance to the Musick of the Instrument . The same may be also observed in the Water , when the Surface of it is very smooth and even ; for then upon the Noise of stringed Instruments , it will become ruffled and curled . The same also may be observed in 2 Glasses , into which if we put water to the height of 1 or 2 Fingers breadth , and bring them to an Unison , ( which may be easily done by the Ear , in drawing our Finger round the Edge of them ; ) for then , if we fix a Crooked-Pin upon the Brim of one of the Glasses , we shall see it move and skip , as we press the Brim of the other Glass with our Fingers . XII . Tones , or Musical Sounds , are not so proper to cause sleep , as some other Natural sounds . Musical Sounds are not so conducive to provoke Sleep ; as the Humming of Bees , the Noise of the Wind , the Murmur of Running-water , and an equal and smooth Tone of Reading . For seeing that the Sound is diffused from the Sonorous Body to the Drum of the Ear , and from thence to the Acoustick Nerve , and so to the Brain , the Center of the Nerves , and last of all from thence to the Arteries , Veins and Guts , it cannot be but that the Blood and the Spirits must be moved also : And because Musical Sounds are not carried with an Equal Course , nor do pass by the Ears , they do affect the Sense of Hearing more than other Sounds , and more awake the Attention , which is the reason that they are not so fit for the provoking of Sleep . XIII . Musick corrupts Manners . Long Experience hath taught , that soft and Effeminate strains of Musick , are very proper to corrupt the Manners of men : Whereas , on the other hand , the Sound of Cornet , Trumpets and Drums , do fill Men with a Couragious and War like Spirit . For seeing that Human Affections are nothing but Sensations , produced by the motion of the Spirits , we need not wonder that the Sound arriving at those Vessels in which the Passions are generated , should produce various Passions . And forasmuch as the Manners of Men commonly follow their Passions , it is evident that Sounds must needs be of great use , either for the corrupting or correcting of Mens Manners . Accordingly PLATO was of Opinion , that all soft Tunes ought to be banished out of a well-governed City . And the Lacedaemonians assign'd a great Punishment to those that used any soft or effeminate kind of Musick ; and made a Law , that none should play upon a Harp that had above 7 strings . XIV . Why upon the stopping of our Ear , we hear a kind of humming Noise . When we stop our Ear with our Finger , we suddenly hear a buzzing kind of Noise . Because it is owned by Physicians , that a Steam or Vapour , doth proceed out of the Hollowwinding of the Ear ; so that when the Ear is stopt , this pent up Steam , as well as the Air , seeking to get out , do beat and distend the Drum of the Ear ; from which Motion , an Affection is produced like to a great Buzzing . Yea , it is frequently found , that the Ears , tho' not stopt by our Finger , are fill'd with this Buzzing Noise , produced by the blast of a most thin Steam or Vapour breaking forth from some little Artery or Vein , which striking against the Drum of the Ear , affects it much in the same manner , as it would be by the sound of a Bell. XV. Sound more easily passeth through a Beam of Wood , than through the Air. A Sound is more easily diffused through the length of a Beam , struck at one end , than through the Air only . For as soon as one end of the Beam is moved , in the same instant the motion is communicated to the other . The Reason is , because there is a greater Continuity of Parts in the Beam , than in the Ai● . For , when you move one end of the Beam A , at the same time the other B is moved also ; but if you push the Air at C , it must at least move as far as D , before it can move E , because all its parts give way like a Sponge ; and because it takes up some time in passing from C to D , it loseth also part of its Force . Whence it comes to pass , that the Sound , which is nothing else but a motion of the Air , is both sooner and more strongly heard at the Point D , than at the Point E. XVI . Why Sounds are more clearly and distinctly heard near the Banks of Rivers . Which is the Reason why the sounds of Great Guns and Bells , are more distinctly perceived along the Banks of Rivers , than when we are at a distance from them ; and it is universally true , that all and every sound is both sooner , and at a greater distance , communicated by water ; for the parts of the water being more close and stiff than those of the Air , when once put in motion , do communicate their Force to others . To this moreover may be added , the smooth surface of the water ▪ which doth not in the least break or turn aside the sound . Thus by laying our Ear to the ground , we can perceive the trampling of Horses at a great distance ; and if a Drum be set upon the Ground , and the Ear laid to the upper Skin of it , the Noise of the marching of Horses can be perceived at some Miles distance . XVII . How the Voice of one man comes to be diffused to the Ears of so many . The Voice of a Preacher in a Church , or Actor upon a Stage , reacheth the Ears of some Thousands of his Hearers . This is not , because the whole Voice of one man comes to the Ears of all that hear him ; for the Voice , as soon as it comes forth out of the Mouth , is broken into many parcels all like the whole ; much in like manner as when Fullers spout out water out of their Mouths ; for then the water is dispersed into innumerable drops , and fills a very large space . From the Mouth of the Speaker an entire Voice doth indeed proceed ; but is afterwards divided into innumerable Voices : And therefore sure it is , that no two Auditors receive the same Voice , tho' they be said to hear the same , because of the likeness of these divided partial Voices , with the entire or total Voice . In the same sense , as they are said to drink the same Liquor , who drink out of the same Fountain . XVIII . Sounds are diffused along some certain Tract or Currents , more than others . Tho' Experience shews , that the whole Atmosphere of the sonorous Body , is moved to such a proportionate Circumference ; yet is not the said fluctuation of the Air equally diffused through all parts of the Air , but the sound seems rather to be carried along some certain Tracts or Currents . And therefore it is that the Words of a Preacher or Oratour , tho' they move the whole Atmosphere of the Auditory ; yet it agitates that Tract most which his Mouth more directly answers to , where the Auditors do also more distinctly hear his Voice , than those who are more remote from that Tract . Thus it is well known , that those only hear the hissing Noise of a Bullet , discharg'd from a Musquet , who are near to the Line described by the Bullet , whilst those who are at some distance perceive nothing of it . XIX . Sounds are equally diffused . Sounds that are excited in any one place , be they Loud or Low , are in equal time conveighed to the place , where they are heard . The Reason is , because the Air being a Continuous Body , when struck , is formed into Orbs or Circles : As we see that still-water , when a Stone is cast into it , becomes waved into Circles ; and as the said Circles , at an Equal distance , spread themselves to the Banks , whether they be caused by a little or great Stone ; so likewise doth the sound , at an equal distance of Time , come to the Ear , whether it proceed from a great Gun , or a Musquet , or any other thing . XX. Whence it is that a double Sound is perceived from the striking of one String . It sometimes happens , that 2 Sounds are heard , when one only string is struck . This proceeds from some defect in the string , which when they are false and uneven do admit 2 several kind of shakings at one and the same time , whereof the one , and which gives the deeper sound , proceeds from the whole string ; the other , which affords a more shrill sound , depends on the unevenness of the string . Suppose , for Example , that when the string A B is struck , as often as it passeth and repasseth from 1 to 6 , to produce its Natural sound , at the same time the Unevenness of its parts produce another shaking in it , by means whereof , when it hath moved from 1 to 2 , it runs back to 3 , and from thence towards 4 , and from 4 to 5 , and lastly to 6 , which produceth a sound that is by a Twelfth more shrill than the former : In like manner , if the second shaking be only double to the former , it will yield an Eighth ; if Quadruple , a Fifth ; and if Quintuple , a Seventeenth more than before . XXI . Why we see the Lightning before we hear the Thunder . A Sound takes more time to arrive at our Ears , than the Light to come to our Eyes ; which is the Reason why we perceive the Lightning before we hear the Thunder ; and we see the Ax of one that hews Timber , when we are at some considerable distance , lifted up to make a second stroke , before we hear the first . The Cause whereof is the Air , which altho' it consist of subtil parts , and divided from each other ; yet being withal Branchy and flexible , when one of them is moved , the other parts are not presently moved at the same instance , but by degrees ; so as that one part being agitated , pusheth on the next , and so on ; like the Circles in the Water , which do not in an instant spread themselves over the whole surface of it , but proceed in a continual order till they come to the Banks of the River , or that they cease upon the failing of the force , which caused them at first . But Light is much more swiftly conveighed to our Eyes , as being caused by inflexible and solid Globuli . For it is the Nature of solid Bodies , that when one end of them is prest upon , the said pression is felt at the same moment of time , at the other end of it . Whence it is that , as was said before , a Sound is sooner conveighed through a whole Beam , than through the Air ; because the parts of the Beam are more closely joyned together , than the parts of the Air , which are flexible , and easily give way to other Bodies . XXII . Strings of an unequal length , yield a different sound . Let there be 2 Strings of the same thickness , and wound-up at the same height , whereof the one is longer than the other ; that which is the shorter of the two will yeild the shrillest , or most treble sound ; and the longer , the deeper sound and less perceptible . This difference of the Sound proceeds from the more frequent , or fewer Vibrations of the said strings : For seeing that a shorter String makes more wavings , and beats the Air with more reiterated stroaks , by so much shriller is its sound , and the sooner it conveighs the sound to the Ear. Because the difference of a deep and shrill sound , doth not proceed from the more swift or slow motion of a string , as ARISTOTLE was of Opinion , but from the variety of the Vibrations , which , if they be frequent , produce a treble or shrill sound ; but if fewer , are the cause of a deep or bass sound . XXIII . In like manner we may give an account , why the lesser of 2 strings that are wound-up alike , but of different length , makes its Vibrations more swiftly . The Reason is , because tho' both the strings make their Excursions with an Equal motion , with respect to Space and Time ; yet because the lesser , by its motion of Contraction , runs through a less space than the longer ; and that a less Space is sooner run through with an Equal motion than a Greater , it must needs be that the motion of the Lesser Cord be swifter . Why the Sound ceaseth upon touching the Strings with ones Finger . Whence it is evident , that if you lay your Finger upon a String presently after you have struck it , before it have made many of its Vibrations , you will indeed hear some kind of Noise , but without being able to distinguish whether it be shrill or deep , because your Finger hinders the Vibrations , and doth not suffer the string by its pression to dilate the Air , and to drive it away by a successive beating of it . Hence it is that a slow and soft blast , blown into a Pipe , produceth no sound , nor that which from the Lungs is breathed out by the Mouth ; because there is no rebounding of the Air , between the sides of a Pipe , nor in the Wind-pipe or Mouth of an Animal , which bounding this way and that way , is the cause of a sound ; and according as their Repetitions are more swift or slow , so they produce either a shrill or deep sound . XXIV . Why the Eccho repeats the same Voice several times . An Eccho doth frequently repeat the same Voice , and renders the same sound at distinct Intervals . So CLAUDIAN makes mention of one that rendred the Voice no less than 7 times : And GASSENDUS tells us , that he had Experienced , that in the Chapel of Charenton , which is about 3 or 4 Miles distant from Paris , one Syllable pronounced at either end of it , was repeated 17 times , and that the same word spoken in the midst of it , was as many times repeated from both Sides . The Cause of this is , the Reflection of the Sound from some interposed let or hindrance : For as innumerable Rays are conveighed from the visible Object , not only to the Eye , but every way round ; so besides the Voice which is carried to the Ear , innumerable other sounds are dispersed in the Air , which meeting with hard and concave Bodies , are dispersed through the Air , which makes the same Voice to rebound several times . For Sound is not conveighed like the Light , in one moment , but stands in need of time , to propagate it self : And therefore when the former sound becomes extinct , or vanisheth in the neighbouring Air , another is generated in that which is farther off ; which being reflected from solid and tolerably smooth Bodies , doth frequently beat the Air that is nearer the Ear. A Sound therefore is oftentimes repeated by the Eccho in the Chapel at Charenton ; because the place there is so disposed , that the nearer places do first repeat the Voices , and the more distant afterwards . It conduceth also to the forming of an Eccho , that the Bodies which reflect the Sound be opposite to each other , and send back the same by turns ; as it was in the Chapel at Charenton , before that the Monastery of the Carmelites was built there : For at that time there was a double Row of Pillars , between which the uttered Voice was rebounded ; much like a Ball , which lighting against one Wall , rebounds thence to the other . XXV . Why the Eccho is heard only in one part . Tho' the Eccho be a Sound which is every way circularly extended , yet can it only be heard in one part of the Circle ; because it can only be received from the Reflexion of that part of the Circles , which is the farthest extended ; and in that part where the said Reflexion is made . As we observe , that when a Stone is cast into a River , the Circles which are there formed ; are further extended towards that part , where the Stone was cast in , than towards the opposite . XXVI . A reflected Sound is of longer continuance , than one that is not reflected . A Sound that hath been frequently rebounded , is preserved or continued a longer time , than that which without repercussion is propagated in a Right line . The Reason is , because by the several Bodies and Cavities against which the Repercussion is made , the sound is strengthned and increased , and therefore is longer a vanishing , than if it were only extended in a Strait line , without repercussion . Moreover , it is evident from the Observations of many , that in the Village of Simonetta , about a mile distant from Milan , the Voice is often repeated 30 times , and in every one of its passings and repassings , it runs through 156 Paces and upwards ; whence it follows , that the same Voice being separated 32 times , before it be altogether extingu●●ht , must run through 5002 Paces and upward . From whence it may be easily gathered , that the sound must needs be greatly increased in the said Concamerations , by means whereof it is enabled to continue so long , seeing it doth not seem possible , that by continual direct Motion , a sound should be able to reach 5 Miles , in which motion of the sound 25 Horary minutes must be spent . XXVII . A Sound is hindred by the Interposition of a solid Body . When a Man speaks to another , a thick Glass Window being between them , his Voice will scarcely be heard ; but if there be only a Paper Window between them , the Voice may be well enough discerned . The Reason is , because the sound is an effect of the motion of the Air , and therefore because little or no Air can pass through the pores of the Glass , the Organ of Hearing cannot be affected thereby . Forasmuch as the Intervening Glass is supposed to be so firm , that it is not capable of being shaken by the sound ; whereas the Air easily passeth through the pores of Paper , especially if the same be stretched , because by this means it is the more easily shaken , and its pores are made more lax and open . XXVIII . A Bell when struck on the upper part of it , yields a shriller sound , than when hit lower . A Bell yields a more shrill sound when struck on the upper part of it , than when it is hit Lower . The Reason is , because the hollowness conduceth to the Deepness of a sound ; and because the further that the sound is propagated the more Bass or deep it is . Thus the lower Holes of a Recorder afford a deeper sound ; for the slower the beating of the Air is , the deeper is the sound . As we find that the more water there is in a Glass , when we press our Finger round the Edge of it , the more shrill the sound is , for then the Vibration of the Air is the swifter , as when less water is in the Glass , so much the more deep the sound is . XXIX . How it comes to pass , that Glass may be broken by a Voice or sound . It is observed , that a Drinking Glass may be broken by a man's Voice only , and that by reason of the repeated Vibrations of the parts of a more solid Body . For the effecting whereof , first , we must try by a stroak with our Finger , what Tone the parts of the Glass do yield , and then must set our Voice as near as we can to the same Tone , and increase the same by degrees , till we come beyond a Diapazon or Eighth : Whereupon the insensible parts of the Glass being struck with iterated stroaks , become agitated by a tremulous motion , which increaseth as they are struck in fit places , so that at last , by the augmentation of the force of the sound , the parts of the Glass leap asunder . But for this Experiment , a smooth and even Glass must be made choice of , and such as when filipt with the Finger doth not sound so shrill , but that the Voice of him that sings , may equal it , or go beyond it . XXX . Why a Sound can sometimes be better heard by one that is a● a distance , than by him that is nearer . Sir KENELM DIGBY relates in his Treatise of Bodies , that he had seen the Walls of a large and round Tower ( tho' I rather suppose it to have been of an Elliptical figure ) which were so Artificially built , that 2 men standing at the opposite points of the Diameter , might easily and distinctly talk together , whilst those that stood in the midst , could not perceive the least of any thing that was spoken . The Reason of this must be fetched from the Coition or meeting of all the sounds , which are dispersed through the whole Room : For seeing that all the Air in the Room is shaken by the uttered Voice , the motions thereof being diffused through that large Space , are reflected from the Wall of an Elliptical figure , and so by Reflexion become united in the uttermost part of the Chamber ; and therefore he that lays his Ear , must needs hear the Voice of him that speaks at the other end , tho' with a very Low Voice . XXXI . How a Sound becomes increased by the means of a Pipe. Upon the same account it is , that by means of a Pipe , contracted in manner of a Cone , sounds may be increased , and made to be heard further off , better than nearer hand ; and this , because the sound is increased proportionably , as the Tube is contracted ; for by this means the sound must needs be increased in its passage through the Pipe. And accordingly they who are Deaf , make use of a Horn , whereof the one end is wider than the other , which they apply to their Ear , by it to receive the Voice of him that speaks to them . And by this means , a Prince might easily hear the Voices of those that walk in his Garden , by having Pipes conveyed from thence to his Closet , the widest Mouths of them being set outward , and the narrowest inward . XXXII . How a Sound comes to be propagated at that great distance by the Stenterophonick Tube . The Stenterophonick Tube , sometime since Invented by Sir SAMUEL MORELAND , which carries the Voice to the distance of a Mile or two ; and that other Trumpet , which ALEXANDER the Great made use of , in giving Orders to his Army ; whereof the Figure is to be seen in an Ancient Manuscript of the Vatican Library , are made after another manner ; for they are streight or narrow at the Mouth , to the end that the particles , which are to make the Reflexion , being close together , may be the more easily beaten , and from thence the Trumpet grows wider and wider to the very end of it , in order to augment the agitation of the Air , by the multiplication of all the Reflexions which are made throughout the whole length thereof ; yet with this Circumstance , that the Bore of the Pipe might be so great , and the Trumpet so long , that the sound would be no longer increased , because the Reflexions would become so weak , as not to be longer in a condition to move the particles of the Trumpet , and consequently cause a new Reflexion . XXXIII . Why bees , when they swarm , are recall'd by making of a Noise . Swarming Bees are recalled by beating upon Frying-pans and Sithes . Some suppose the cause hereof to be , because Bees are delighted with these Noises , and being thereby allured , do all unite themselves in one great hanging Bunch or Cluster . But this is not at all probable , because when the Bees are got up into any height of the Air , how much soever the said Instruments may be beaten , this will not bring them down , or hinder them from flying away . Wherefore the true Cause hereof seems to be , because the Air being much shaken , and agitated with the Sound , the Bees not being able to bear the same , are forced to unite themselves and settle in a heap . For Bees have very thin VVings , not feathered ones like Birds , but consisting of a thin Skin ; by means whereof they cannot endure this concussion of the Air : Which probably also is the reason , why they never leave their Hives when there is a great VVind , or at Midnight , but only in calm and hot weather . CHAP. VIII . Of Light. I. Light may be excited without a Luminous Body . UPON the rubbing of our Eye , tho' it be shut , there appears a round spot of Light , and the same will be by so much clearer , the nearer the rubbed part of the Eye , is to the bottom of it . This is an Argument that Light doth not exist without the Eye , but is only in the Eye of him that sees ; and consequently that the Bodies , which are commonly called Luminous , are only said to be such Potentially ; that is , in case they strike the Eye of the Seer : So that if there were no living Creatures in the World , which could see the Light , neither could any Light properly be said to be in it . And therefore we must conclude , that Light is not in the things which are called Bright or Luminous , but in him that perceives it ; in like manner , as Pain is not in the Sword , but in him that feels it . II. Why the Rays of ●ight , by passing through a narrow hole , do cross each other . The Light passing through a small hole into a Dark Room , enters the same cross-wise . The Reason is , because the Rays flow from each point of the Lucid Body , in Right Lines : Wherefore because the Object , without the hole , is bigger than it , it is impossible the Rays should pass through it , without crossing each other ; and by this means it comes to pass , that the situation of the whole Lucid Body is represented upside-down , on an Opake Body . III. Light passing through the holes of two Walls , is not perceived by those who are in the Room . Let a hole be made in one of the VValls of a Room of that bigness as may admit the flame of a Torch or Candle ; and just over-against the said hole , let another more large be made in the opposit VVall ; then in the Night let the Flame of a Candle be held on the outside of the less hole , so as that the Rays that pass through it , may be admitted by the opposit hole , and pass through it also ; by which means the whole Chamber will continue dark , as if no Rays at all were transmitted through it . The Reason of this Experiment is , because none of the Rays that pass through the Chamber , do reach the Eye , nor affect it ; and yet must , before any vision can follow . And for the same Reason it is , that those who in a clear Night lift up their Eyes on high , perceive all spaces above the Horizon to be equally covered with Darkness ; when as yet those immense Spaces , except only that part of them which is vail'd by the Cone of the Earths Shadow , are no less guilded by the Sun , than they were at Noon-day . And this because the Rays which are diffused through those immense Spaces , cannot reach our Organs , nor produce any motion in them . IV. There can be no Light without the Eye . From which Experiment it is evident , that the Light depends on the Eye ; so that if there were no Eye , or no Eye open , neither could there be any Light , or Brightness , such as we perceive when we lift up our Eyes to Heaven , and behold this most beautiful appearance of things . V. A Spark of Fire , by means of a Prospective may be perceived at 50 Leagues distance . A Spark of Fire sheds its Light through a very large space . For a Spark of Fire , without any Prospective Glass , may be perceived in the Night , at the distance of 500 paces ; and with a Prospective may be discerned at the distance of 50 Leagues , and probably much farther . It seems strange to some , that such a small Lucid Body should be of so great a force , as to push the intervening matter of the Second Element in a Right Line . But this their wonder will cease , if they consider that this subtil matter , which is diffused through the Pores of Diaphanous Bodies , is like a most Fluid Liquor , whereof one part cannot be prest upon , but that all the part must be moved by it . As for Example , let there be a double Tube or Pipe , ABC , filled with water , and of a length as great as you please ; if whilst the water is at rest , and destitute of all motion , you put a drop of water into one of the ends , viz. A , no Body will deny but that the weight of that one drop will be sufficient to raise the water towards the other end C , and consequently to put the whole mass of water contained in the said Pipe , ABC into motion . And for the same Reason , who will not acknowledge that a Spark of Fire may be sufficient to agitate the Heavenly Matter , diffused through a large space of Air ? Forasmuch as the action of Fire doth far surpass the force of Gravity ; as also because the subtil matter which is contained within the pores of the Air , and of the Water too , is more fluid than either of them . Wherefore it is evident , that the flame of a Candle , must needs move the subtil matter that is contain'd in the round of 50 leagues Diameter ; forasmuch as by the force of its motion it pusheth the circumambient Air , much in the same manner , as a Stone that is whirl'd round in a Sling , presseth down the bottom of it ; and by the vertue of its Circular motion , doth extend the String of it in a straight Line . For the subtil matter , which on every side surrounds the Spark , is also turned round , and strives to withdraw from that place . VI. How it comes to pass , that the Rays of Light do not hinder one another . But from this Explication of Light , no small Difficulty seems to arise , viz. how it comes to pass , that the Spark which pusheth the subtil matter contained in the Pores of the Air to Right Lines , can be perceived , when another of the same force and virtue is opposed to it . For let us suppose some one Globule of the Air ABCD , whose Center is E ; and at A and B , 2 Lucid Bodies of the same force , it will follow , that either the said Lucid Bodies will not be perceived from the opposit places C and D , which is contrary to Experience ; or that the subtil matter in the Center E , will be in many places at once , which is repugnant to the nature of Bodies . Which may be thus proved ; A cannot be perceived at C , but that the subtil central matter E , must be push'd towards C. in a straight Line : And by the same reason B cannot be seen at D ; but that the same matter E , must be driven towards D ; and the same may be said of infinite Lucid Bodies , placed on the surface of that Globe . This Difficulty only ariseth from hence , because it is hard for us to apprehend how the parts of Liquid Bodies can receive various actions at one and the same time ; because we have observed , that a hard Body cannot at the same time be moved divers ways at the same time . When yet in liquid things we know it is so ; as may be seen by Experience in 2 or 3 Tubes , by Example AC , BD , FG , whose Diameter I suppose to be equal , and which are so placed crossing one another , as that the space in the middle E , be common to them all 3 , and yet no greater than if it served only for one of them . For let us suppose that 3 Men do blow into the ends of all 3 of them ABF , the Air which is in the midst of these 3 Pipes ; E will at the same time be driven towards C , D , and G. Not as if therefore it were possible , for every one of the said parts to remove at the same time to these 3 several points ; but it is sufficient if some one of them be moved towards C , others towards D , and others again towards G , and that 3 times swifter , than those that fill the other parts of these Pipes ; which is credible enough , forasmuch as they are with triple stronger force push'd forwards . Now to apply this to the subtil matter , it will by this instance be easily conceiv'd , how the same transmits the different Actions of various Lucid Bodies , to different parts at one and the same time . VII . How it comes to pass , that a Man who shakes a Torch , doth at the very same instant perceive the same in an opposit Looking-Glass . When a Man in the Night hath a lighted Torch in his Hand , and shakes it towards a Looking-Glass , at a quarter of a miles distance , he will no sooner perceive the shaking in his own Hand , but that at the same time he will perceive it in the opposit Looking-Glass . The Reason is , because Light is rather an endeavour or tendency toward motion , than motion it self . For tho' motion cannot be performed in an instant ; yet is it not repugnant , for the action of Light to be transmitted in a moment at any distance whatsoever . For it is one thing to say , that motion is performed in an instant , and another , that Light is transmitted in an instant . The Light is transmitted after the manner of the Action of a Stick , every part whereof may be perceived or felt , at either end of the Stick , at the very same instant wherein it is produced . And consequently nothing hinders but that a lighted Torch , being shaken , may be perceived in a Looking-Glass at a distance , at the same instant that the shaking is felt in the Hand ; because the propagation of Light is momentaneous , and needs no time for its passage . VIII . Why a certain Stone , found near Bononia , doth retain a Light in the Dark . Some Stones shine in the Night , especially the Diamond . There is a Stone very common in the Country about Bononia , which if it be gently calcin'd , and afterwards exposed to the Sun , doth take in so much Light , that when put into a dark Room , it is observed to retain some part of it , much like a glowing Coal that is covered with a little Ashes , the Light whereof decreaseth by degrees , and is at last quite put out . We must not imagin , with some , as if the Light of the Sun were preserved in the foresaid Stone ; forasmuch as that Light , upon the withdrawing of the Sun , doth altogether vanish , as not being able to subsist a moment without its presence ; but rather conclude , that within the Pores , made by the Fire in the said Stone , there be some Fibres , so very moveable , as that upon the presence of the Light they are put into a great agitation , and upon the withdrawing thereof do still continue the motion imprest upon them ; and consequently move the surrounding Globuli of the Second Element . And therefore , when either in process of Time , or by the strength of Fire , such Fibres are taken away , that Luminous Virtue immediately vanisheth . The Light of this Stone , as was said , can only be perceived in a Dark Room , because it is very weak , and therefore easily overcome of a stronger Light. As is evident in Rotten-wood , Crickets , and other things that shine in the Night , which by Day give no Light at all . IX . Why a Diamond shines in the Night . The Reason why a Diamond shines in the Dark , seems to be this , because in the Pores thereof the particles of the 3 d Element are so comprest , that those of the 2 d Element being push'd out , some of them are surrounded only with the 1 st Element , by which they are carried away , and the Globuli are driven or push'd forwards . X. Why it is that when a Man is struck on the Head , he perceives Sparks of Light. When we receive a knock on the Head , or a blow on the Eye , we seem to perceive many Sparks of Light. The Reason is , because the motion of the Globuli is very much accelerated by the striking Fist , which makes them break forth from the Eye with great force , and so cause the appearance of those Sparks , which we see at that time . For by means of such a stroke , the Humours are put into a great Commotion , and more especially the Arterial Blood , which driving with a great force against the Optick Nerve , seems to exhibit the appearance of many Sparks of Light. For the Sense of Seeing is nothing else but a local Motion , or rather Pression , whereby the fine filaments of the Net-like Coat of the Eye are struck . XI . Why if we shut our Eyes after that we have , for a good while , been gazing on the Sun , we perceive an appearance of Light or Fire . The Affection which the Light impresseth upon the Eye , doth continue for some time . For when we shut our Eyes , after we have beheld the Sun , we think we see an appearance of several Colours . The Reason whereof is , because the fine Fibres of the Optick Nerve , do still continue agitated by an unusual motion . But forasmuch as the said Commotion wherewith they are shaken , even after that the Eyes are shut , is not strong enough to afford such a clear Light , as that is from whence it did proceed , therefore it represents only to us some weak Colours . And for the same Reason it is that some persons do perceive some kind of Light , for some time after that a Light hath been put out . Yea sometimes , tho' there be no Lucid Body to affect the neighbouring Air ; yet sometimes some sharp Humour or Vapor , only moving the Filaments of the Retina , causeth an appearance of Light to the Eye . XII . The Light of a Candle doth appear more at Night , than in the Day time . The Light of a Candle , doth appear greater at Night , than in the Day-time , if the Eye be at some distance from it . This may proceed from 2 Causes . First , It may be occasioned by something in him that sees , who when he doth not exactly know the distance of the Candle , may imagin that it is as far from him as a Star. Moreover , seeing that the Image of a Candle , framed in the bottom of the Eye , doth much exceed that of a Star ; it may make him think that it is really greater than a Star. Another Cause of this mistake , may be from the thing it self which is seen . For when at Night we look upon a Candle , that shines at a distance , we do not only perceive the Light , which comes to the Eye in a straight Line , but that also which proceeds from the thick Air , and the Opake Bodies that surround it ; for they also convey to the Eye the Light they have received , which being ascribed to the Candle it self , it cannot but appear much greater , than indeed it is . XIII . Why some Worms and Flies do shine in the Dark . Some Worms and Flies do shine in the dark , shedding a kind of Brightness from their Bodies , through the Air. It is probable that these Insects have a certain matter exhaling from them , that resembles the sweat of other Animals ; and that the same pusheth the Globuli of the 2 d Element . And this seems to be the more probable , because these Animals cease to shine as soon as they are dead . XIV . Some Plants do shine . Thus we see that Rotten Wood appears shining and Bright in the Dark , because by the access and recess of its parts , the Pores thereof are so straitned , that they contain nothing else but the first Element , whereby the 2 d is agitated . Thus Sea-water , being vehemently driven and beaten with Oars and Storms , doth appear all on a flame , because the Sea-water doth consist of stiff particles of Salt ; for by these penetrating little Bodies , the particles of the 2 d Element they meet with in their way , may be so expelled , as that some of the particles of the 3 d Element , may be only surrounded with the 1 st Element , and by it be carried away , and driven on to the Eye , by a continued Range of the Globuli . XV. How Cats and Owls see by night . 'T is commonly believed that some Animals do emit Light from their Eyes , and thereby see in the dark , as Cats , Owls , Dogs , and other Creatures that hunt their Prey at Night , avoid dangers , and search out hidden things . But for all this is so confidently asserted , I question not but that it will be found otherwise . For if any Light did proceed from the Eye , the same might be perceived by others , or might be concentrated in a Burning Glass , which could never yet be proved by any Experiment . We are therefore to conclude , that the foresaid Animals , do only see by that Action which proceeds from the objects . For there is always more or less of Light in the Night ; and therefore we see that Snow gives some Light in the dark , because it reflects the Rays of Light it hath received , better than other Bodies , that are less white than it self . Wherefore Cats , Owls , and other Animals perceive Objects in the Night , not because they shed Light from their Eyes , which is afterward reflected from the Object to their Eyes again ; but because their Retina is more accurately framed , and more fit to receive the Beams of Light , so as that it can be affected by a very weak Light. For it is notorious , that the Apple of the Eye in Cats is so straitned in the Day-light , especially when the Sun shines strong , that it appears scarce so broad as a Thread ; whereas in the shadow it is so enlarged , as to be almost equal to the whole Eye . XVI . The Rays of Light do more easily pass through Glass , than the Water . The Rays of Light do more easily pass through Glass than Water , and through Water than Air. The Reason is , because the Action of the Subtil Matter , wherein the Nature of Light doth consist , is more hindred by the Parts of the Air that are soft and not well knit together , than by those of the Water , which do more strongly resist it . For the more firm and solid the parts of any Pellucid Body are , so they be small , the more easily do they transmit the Light. Hence it is that Glass and Crystal , because of the firmness of their parts , do the more easily admit the Beams of Light. XVII . Why Paper dipt in Oyl is Transparent . And much the same Reason may be given , why Paper besmear'd with Oyl , becomes diaphanous ; because the Oyl entring into the Pores of it , which before , by reason of their winding or crookedness , could not transmit the Rays of Light , it doth smooth them , and change the Figure and bigness of them ; and by this means causeth a different disposition of the parts of the Paper . XVIII . Why Reflected Light is less bright , than that which is not Reflected . Reflected Light is always less bright and shining , than that which is direct , or not reflected . For take the smoothest Looking-Glass , and the most perfectly polish'd , whether by Nature or Art , yet will it never be endued with an entire and most absolute continuity of its parts , without any inequality of the Pores , roughness or sign of division . Hence it is , that tho' all the Beams of Light fall upon it , yet some entring into the Pores , are swallowed up of them ; or if they do reflect from it , because of some inconspicuous inequality of the extream parts , yet are they insensibly dispersed ; so that the entire Light is never so dully reflected , but that more or less it is lost , and never reaches the Eye . CHAP. IX . Of Colours . I. Whether the Colours of a Peacocks Tail , and the Necks of Doves be true Colours . A Peacocks Tail , and the Feathers of a Pigeon do wonderfully change their Colours ; as LUCRETIUS elegantly expresseth it . So Plumes that grow around the Pigeons Head , Sometimes look brisker with a Deeper Red ; And then in different position seen , Shew a gay Skie , all intermixt with Green : And so in Peacocks Tails , all fill'd with Light , The Colour varies with the change of sight . These Colours are caused when the Peacocks Tails , and Necks of Pigeons are turned towards the Light ; and by reflexion or refraction do send back the said Rays to the Eye . They are commonly called appearing Colours only , and reckon'd amongst those Images that deceive us , and whose entire Essence or Nature consists in their appearance , or seeming such . But the reason why they assert this , I cannot apprehend : For if they admit Colour to be nothing else , than the Light it self , modified in the surface of Bodies , why may not they own those Colours , which they call seeming , to have as truly the Nature of Colour as any other ? For can the short duration of the Cause , destroy the Truth of the Effect ? Or doth not a Son deserve that name , because he dies almost as soon as he is born ? Who will affirm , that the Greenness of Grass or Herbs , which for some days only doth delight our Eyes , is less a Colour than the Greenness of an Emrald , which continues so much longer ? For by the same Argument , the flame of Lightning or Gun-powder will be no true Flame , because of its suddain vanishing and disappearance . For the lasting or continuance of Colours imports nothing to their Truth and Reality ; and those which continue only for a moment , are no less Colours , than those which lastingly do affect the Eyes . II. How Colours come to be varied . The Cause therefore of the variation of Colours in the Peacocks Tail , and the Necks of Doves , is the different Reflexion and Refr●ction of the Rays , made by the thin Hairs of their Feathers , because of their various admission of the Luminous Beams . Thus those Pictures , made of Feathers , which are brought out of the East Indies , according to the variety of their situation , do exhibit a Violet Colour , or bright Blue , or a curious Emrald Green ; forasmuch as the soft Feathers whereof they do consist , have their surfaces so ordered , as diversly to reflect the Light. But this being besides my present scope , I return to prosecute my Experiments . III. Two Looking-Glasses , made of different Marble , do differently reflect the Image of the Sun. Let two Llooking-Glasses be made , the one of white , the other of black Marble ; that of white being exposed to the Suns Beams , will represent to us a more clear and distinct Image of the Sun , than that of the black , from which only some weak Rays will rebound , which being not sufficiently united together , will only produce a confused Image or Similitude of the Object . The Reason of this is , because the action of the Light , whereby the Parts of the Subtil Matter , push'd on by the Lucid Body , do tend towards the Black Marble , is almost quite extinguish'd or swallowed up by it , so as that very few of the Rays are reflected : Whereas the White doth altogether remit the Action of Light , and almost reflect all the Beams that fall upon them . For tho' White and Black Marble , consist almost of the very same parts , and no difference is discernible between them by sense ; yet it is not to be questioned , but that in the Black some soft parts are to be found , which swallow up part of the Beams , and break the force of them . So that the Black Marble differs from the White , much alike as a Pumice-stone , whose Pores are filled with melted Pitch , differs from another Pumice-stone , whose Pores are only filled with Air : For as the Grains of Sand cast against the latter , would rebound thence , whereas those cast against the other would be deaded ; in like manner , all the Light which falls upon the White Marble is reflected ; whereas that which lights on the Black , is mostly swallowed up . IV. What is the Cause of the Whiteness that is in Bodies . The same is apparent in other Bodies ; for if Water , for instance , be strongly agitated and shaken together , it becomes of a White Colour , and after that the Bubbles of the Froth are broken , it is Transparent ; which is a great Argument , that the cause of this Whiteness is , when the Light is wholly and entirely reflected from the small Bubbles of the Froth , as from so many Looking-Glasses . And accordingly the Black Marble is like Hangings , which upon the casting of a Ball a-against it , doth receive motion , but doth not rebound ; whereas the White is like a hard Wall , which sends it back , and without any motion of its own , doth reflect it . V. W●y White Marble is less su●●●ptive of Heat , than Black Marble . Hence it is , that if you take 2 Polish'd pieces of Marble , the one White , the other Black ; and in hot weather expose them to the Sun-beams for some time , you 'l find that the Black will be very hot , whereas the White will , for all that , in a great measure , continue cold . Whereof no other reason can be given , but that the Black , because of its many Cavities , doth freely admit the Globuli of Light ; whereas the White , because of its closeness , doth reverberate the received Light , retaining nothing of it . Accordingly as we daily observe in whited Rooms , which do reflect more Light , and do , in a manner , send it all back again from them . Hence it is , that when the Light of the Sun is admitted into a Darkned Room , through a little hole , if the Rays be received upon a white Paper , they appear very bright and shining ; whereas they shew very weak and faint , when they light upon a black Body . VI. Polish'd Marble appears of a blacker Colour than that which is Rough. Polish'd Marble is of a blacker Colour , than that which is Rough. The Reason is , because in the Rough there be many Prominences , which every way reflect the Light. For the Ray which is reflected from one part of the Body , goes one way , and that which is reverberated from another part , another way . But a Polish'd Body , forasmuch as it consists only of one continued Superficies , therefore it reflects fewer Rays to the Eye . Moreover , seeing there is no Body , in Nature , so Black , which doth not consist of many parts , which being separated from the rest , would constitute a white Body , as the difference there is between the Polish'd and Rough Marble doth abundantly testifie : We may say that Polish'd Marble is most black , because its white parts do reflect the Light they receive , towards the same part ; where if there be never an Eye to admit it , it is the same with respect to it , as if the Light were quite extinquish'd . But when the Eye is placed in that part to which the reflexion tends , it perceives this Light in the Marble , together with the Colours and Figure of the Objects , from whence the Light doth proceed ; no otherwise than if it did proceed from a Looking-Glass . VII . A perfectly Polish'd Body can only be seen on one side . Now that an absolutely Polish'd Body doth only reflect one Ray to the same point of the Eye , may be thus demonstrated . Let BF , be suppos'd to be a perfectly polish'd Plain , and let the Light be in the Point A , and the Eye at H , let the reflex Ra● be DH , so as that the Angles ADB , and HDF be equal ; it is evident , that no other Ray derived from A , will be reflected to H , supposing that the surface BF , be absolutely smooth and even . For let there be any other Ray of incidence , suppose AC , I say , that the Angle ACB , is greater than the Angle ADB ; wherefore supposing an equal Angle of Reflexion ACI , the reflected Ray , CI , will never reach to H , nor will ever concur with DH , but rather fall wider from it , the further it is drawn . And the same must be said of all the other direct incident Rays between B and D. Wherefore there will only one Ray be reflected at H , viz. DH . I have said before , if the Body be perfectly smooth , for if it be not , the case will be otherwise , upon the changing of the nature of the Plain . VIII . Some Bodies retain always the same constant Colou● ▪ as Coals , Snow , &c. Some Bodies do constantly keep the same Colour , and which way soever they are turned towards the Light , do always reflect it a●ter same manner ; so Coals always appear Black , common Snow , White . The cause of this constant Colour is to be ascribed to the Disposition and Situation of the Parts , which as long as it continues the same in Bodies , they admit the Light at certain Angles , and accordingly reflect it to the Sight . For Charcoal is black , because its surface is rough and uneven , by reason of innumerable furrows and chinks , which choak the Rays of Light , and break their force . Which may be evinced , not only by reason , but by our very Senses . For if a man do gently handle Charcoal , he will be sensible of a kind of Roughness , something like that we feel in a Pumice-stone ; which , as I said before , is not capable of being polished . For whilst Wood is burning , much Smoak and Exhalation flies away from it , by the force of the Heat ; and therefore the Fire being rarefied between the Cavities of the Wood , doth break its prison and dilate the pores ; into which , when the Rays of Light enter , they are there swallowed up and entangled , so that they cannot rebound to the Eye . IX . In what sense it is that Colours are said to be in Bodies . But yet we must not imagine with some , that Colours do formally exist in Bodies , but effectively only , inasmuch as they produce them in the Eye , by means of a certain disposition of the Insensible parts , and the Reflexion of the Light : In the same manner as a Needle , which is destitute of all pain , yet being thrust into the Skin , doth by its motion , figure and hardness , produce Pain there . Thus all Sulphurous matters exhibit a Red Colour : As when the Spirit of Turpentine being digested with the Calx of Lead , yields a deep Red ; and the Spirit of Soot mixt with any acid Liquor , or Common water , affords a white or milky Colour . Thus the Light proceeding from 2 Lanthorns , the one of red Glass , the other of blew , being receiv'd on a Paper , will represent there a Purple Colour . All which Instances manifestly evince , that Colour is not inherent or fixed in a Body , but only a result of the Reflexion of Light. X. Why beaten Glass seems to be white . Glass , when it is whole and extended in Panes , is transparent , that is , of no Colour , or if it have any , it is rather of a black than white Colour ; but when beaten in a Mortar , it appears white . The Reason is , because beaten Glass hath many Surfaces , which every one of them do receive the Light and reflect it again , as so many Looking-Glasses . For seeing that Glass is destitute of all Moisture , and that all its parts are of a round figure , as may be experienc'd by the help of a Microscope , one of them reflects one part of the Light , and the other , another , and so on , so that they reflect the whole Light , and that after the very same manner as they have received it . Hence it is that White Bodies are , of all others , the least opake ; because they reflect the Rays of Light from every point of them , and suffer none to be swallowed up of any of their Cavities . XI . What is the Cause of the Whiteness in Snow . Neither is there any other Cause of the whiteness of Snow , which consisting of Bubbles , doth send the Rays to the Eye , according to the multitude of the Bubbles whereof it is composed . No● is this contrary to what hath been said before , tha● from every Bubble , one Ray only is sent to the Eye : For since they are not sensible , neither do they hinder , but that abundance of continual Rays may be directed to the Eye . Hence it is that Snow , which is nothing else but Frozen-water , yet doth appear whiter than Ice ; for seeing that the surface of Ice is not so much curled , as the surface of Snow , and that there are many Devexities or Roundings in Snow , from whence the Light may be reflected , which are not to be found in Ice ; i● cannot be , but that Snow must appear whiter than Ice . And for the same Reason it is , that water beaten together , turns to froth , by its being divided into round and small parts : For if the Bubbles , whereof the Froth consists , be so great , they will cease to yield a white Colour . Thus likewise the Whites of Eggs , when beaten , lose their Transparency , and become white ; and Crystalline Glass , heated in a strong Fire , and quenched with water , is resolved into so many slits , that it appears altogether white . XII . Fishes tending to putrefaction , do yield no Colour at all in the Pneumatick Engin. Rotten Wood , as also stinking Fish , are of a kind of whitish Colour , when exposed to the Air ; but when put into the Pneumatick Engin , upon the extraction of the Air , do lose all Colour . The Reason is , because the particles of putrefying Bodies , are agitated in such a manner as is necessary , for the causing of the Sense of Light. For the Corruption of any Body is caused by the motion of its parts , whereof some fly away and are separated from the rest ; and those that remain , impart their Vibration or Motion to the interjacent Air , and by this means do afford a weak Light to it . But seeing that all the Air is supposed to be extracted out of the Pneumatick Engin , it needs not seem strange to us , if the Fish which shined before , doth no longer shed any Light. For the Air , by its Elastick virtue , doth assist the agitation of the Light , and where its motion is stronger , there the Light also is increased . XIII . Why the lower part of the Blood in a Porringer appears of a darker Colour , than that at the top . Thus FRACASI is of Opinion , that the Reason why the Blood appears of a darker Colour at the bottom of a Porringer , than at the top , is not because , as the common Opinion is , that part is the more Melancholy portion of the Blood ; but because the lower part of the Blood is not so much exposed to the Air , and therefore appears less Ruddy and Florid , than that which is on the top . XIV . Why the Blood that is contain'd in the Arteries and Veins , is Red. Why the Blood that is in the Arteries and Veins is Red , appears from what hath been said in my Institution of Philosophy , viz. That the motion of the Globuli of the second Element , which are the Cause of Light , is twofold , the one whereby in a strait Line they are carried to our Eye ; the other , whereby they are whirled about their own Centers . So that if they be whirl'd about much slower , than they move in a right Line , then the Body whence they are reflected will appear blew to us ; but if they be whirl'd about much swifter , then it will seem red . Now no Body can be disposed to make them whirl about more swiftly , but such an one as consists of Branchy parts , and those so thin and near one another , as to have nothing about them , save only the Matter of the first Element , such as the Parts of Blood are . For the Globuli of the second Element meeting with the Matter of the first Element in the surface of the Blood ; which Matter doth without ceasing obliquely pass through the same , and that with great swiftness , out of one pore into another , so as to be moved after a different manner from the Globuli ; they are forced to whirl about their own Centers , by the Matter of the first Element , and that more swiftly than they could be forced by any other Cause , because the first Element exceeds all other Bodies in swiftness . XV. Why bu●ning Coals , or Red hot-Iron are not so red as Blood. And the same is the Reason , why Red-hot-Iron and Burning-Coals are red ; even because very many of their pores are fill'd only with the first Element . But because the said pores are not so narrow as those of the Blood , and that there is much of the first Element in them , to produce Light , hence it is that their Redness differs from the Redness of the Blood. XVI . Of a Person that distinguisheth Colours by the touch of his hand . Very Famous and Credible persons give us an account of a certain blind Organist , who lived near Utrecht upon the Maes , who had such an ●xactness of Feeling , that by the touch of his Hand only , he was able to distinguish several Colours . It will not be very difficult to assign the Reason of this wonderful Effect , if we consider that the interruption of parts in Bodies , doth very much conduce to the production of Colours ; forasmuch as it is evident , that most Colours proce●d from the roughness of Bodies , and the figure , order , situation and motion of the parts . As is evident in red Marble , the polisht part whereof is very different in Colour , from that which is rough . So likewise we may perceive by a Microscope , that the yellow parts in a piece of Silk , are very different from the blew . Forasmuch therefore as there is so great a variety of Parts in Colour'd Bodies , which may admit a Reflexion or Refraction of Rays , we may conclude , that it seems probable enough that the foresaid blind Man might have such a quick Touch , as to be able to distinguish colour'd Objects by the roughness or unevenness of their parts . XVII . The mixture of Bodies produceth new Colours . Several Bodies mingled together obtain a different Colour from what they had before : Thus Oil of Anniseed , mixed with Oil of Vitriol , turns red ; Spirit of Turpentine poured upon Sugar of Lead , or calcin'd Lead , produceth a red Tincture ; and the yellow Gall in Animal Bodies , according to the Opinion of Physicians , is the product of the mixture of adust Sulphur and Salt. This production of different Colours is caused by the inward disposition of the parts of Bodies . For it is certain , that from the alteration of the least parts of one Body , a different Colour must arise ; as appears evidently to the Eye in Herbs that are beaten in a Mortar . For the temperament and ranging of the Parts , is , as it were , the first Rudiment of Colours , which upon the appearance of Light , and its being diversly reflected and refracted from those particles , doth super ▪ add the last and most absolute perfection to Colours . Thus the Stone Magnesia , which for colour and hardness doth resemble a Load-Stone , being in a certain proportion added to Glass , renders it perspicuous , and quits it of its green Colour ; but if more than is necessary be added to it , it makes it black . Thus an Apple cut in two , at first appears white , then turns yellow , and last of all black , according as the surface of it becomes differently disposed , by the drying of its parts . XVIII . How two pe●●●●id Bo●●es can pr●duce a black Body . The transparent and clear Infusion of Galls being mixed with a Solution of Vitriol , makes Ink ; to which if you afterwards add Spirit of Vitriol , or Aqua-fortis , the black Ink will become transparent again , as Spring ▪ water ; and if you drop some Drops of Oil of Tartar into this clear Liquor , it will be turned again into Ink. The blew Tincture of Violets , infused into the Oil of Vitriol , becomes of a purple Colour ; to which if you add a few Drops of Spirit of Harts-horn , the purple Colour will be changed to a green . The Reason why 2 clear Liquors mingled together make Ink , is , because the particles of either of them are brought nearer together , so as to hinder the passage of the Rays of Light. And whereas the said Ink afterwards , upon the pouring another Liquor into it , becomes clear again , the Reason is , because the particles of the new added Body , do separate the Parts that before were contiguous , and consequently make an open passage for the Light , to pass freely , as before . XIX . The Cause of the variety of Colours , proceeding from the mixture of Liquors . The Difference of Colours proceeding from the mixture of Liquors , is to be fetch'd from the small particles contained within the pores of each Liquor , which being changed in situation and position by the Liquor that is poured into them , do transmit the Rays of Light , variously refract or reflect them , and consequently produce different appearances of Colours . For , as was mentioned before , when the Globuli have more Right motion than Circular , they afford a Violet Colour ; if they have more Circular motion than Strait , the Liquor appears yellow ; but if the Globuli have much more Circular motion , than Right motion , they produce a Red colour'd Liquor : Again , if the Aethereal Globuli have more Right motion , than Circular ; but yet less than the Globuli of those Rays that produce a Violet Colour , then they yield a blew . And in like manner we are to conclude concerning all other Colours , the variety and sudden changes whereof , in Liquid Bodies , is chiefly to be attributed to precipitation . XX. Sharp and sowre Salts alter the Colours of Bodies . Thus we find , that sharp and acid Salts cause a thousand changes in the Colours of those Liquors with which they are mixed , according to the different Nature of the said Liquors . As for Instance , the Oil of Vitriol makes a black composition , with the infusion of Galls . Common Brimstone dissolved in the Oil of Tartar , becomes of a fair Citron colour . Spirit of Nitre turns the Juice of Herbs as white as Milk. Spirit of Wine turns red , when it hath been digested a while with the Salt of Tartar. The Syrup of Violets turns green , by the mixture of an Alkali ; and red , by adding an Acid to it . Acids , or Sowre things destroy blew Colours , and Alkali's do restore them again . The Infusion of the Indian Wood , affords an amber Colour , when mingled with Acids . And the Solution of Common Brimstone , made by an Alkali , turns white , by adding an Acid to it . All which solely proceeds from those Dispositions which Acid and Alkali Salts produce in the pores of those Liquors to which they are added , which is such , that the Light which penetrates them , receives all the Modifications that are necessary for the several Colours we find produced by these mixtures . XXI . Why Powders are generally white . Most Powders are white , if they be dry and beaten , or ground very small . Because all those small Bodies into which the Powder is resolved , are Spherical , and like so many Globuli , which reflect all the Rays of Light to one point . And if it happen that the grains of any Powder do terminate in a Point or Angle ; then they do not give a white Colour , but some other . For I have often taken notice , by making use of a good Microscope , that the grains of white Sand are either Round , or approaching to a Conical figure , that is , of a smooth crooked surface ; but that the grains of Sand of any Colour , were Rough and furnished with many prominent Angles . XXII . Why Veal , after it is drest by the Fire , looks white . Veal , and Hens or Capons , are of a white Colour , when boiled or roasted , and lose the red Colour they had , when they were yet Raw. The Reason is , because the Heat hath chas'd away the Moisture that was before in the Veal , as well as in the flesh of Hens , &c. for moisture shut up in the pores of Bodies , is a hindrance to Whiteness , as is evident in all dry things , which by the separation of their moisture become white ; because Moisture doth not permit so much fraction as the Air doth ; and yet so much is necessary to cause Reflexion . Hence it is , that a Body that is newly whited with Quick-lime , appears at first to be of a dusky Colour , and afterwards , in success of time , becomes white ; because at first it hath much moisture mixed with it ; which being exhal'd into the Air , and the Quick-lime dried , yields a white Colour . XXIII . Cloth expos●d to the Sun changet● its Colour . Colours wherewith Cloth or Silks are died , do soon lose their Lustre , by being long exposed to the Sun , and degenerate into a faint Liveless Colour . This proceeds from a twofold Cause : First , Because many of the particles of Dyed Bodies , which compose the Tincture are exhaled , by the Suns agitation . Secondly , Because many little Bodies , that wander up and down the Air , do thrust themselves into the pores of the Cloth , which by covering its Lustre , efface its former Colour . Wherefore they that deal in Cloaths , have a care that they be not long exposed to the Air , but keep them shut up . XXIV . The Spirit of Vitriol is hurtful to the Teeth . Some make use of the Spirit of Vitriol , to whiten their Teeth . But this may well be reckon'd amongst Vulgar Errors , since it is notorious , that the Spirit of Vitriol , in conjunction with an Alkali , doth produce a yellow : And forasmuch as something of an Alkalous Nature is continually transfused from the Gums and other parts of the Body , it must follow that the Spirit of Vitriol being commixt with such a Salt , must rather make them of a yellow Colour , than any whit conduce to the whitening of them . XXV . Sugar , and hot Meat , blacken the Teeth . It is observed , that the frequent use of Sugar , and too hot Meat , does blacken the Teeth ; because Sugar abounds with Volatile Salt , whose sharp-pointed particles do Worm-eat the substance of the Teeth , and make great pores in them ; wherein the Lucid Rays being suffocated , do produce a black Colour . And the same effect is also caused by hot Meat , the agitation of whose particles do likewise bore many Cavities in the Teeth . XXVI . What is the cause of those various Colours which appear in a long figur'd Glass expos'd to the Su● . A Glass Vessel of a long figure , like a Gourd or Cucurbit , being fill'd with water , and expos'd to the Sun-beams , so as that they may enter obliquely through the narrow Mouth , at the upper part of the Vessel ; these Sun-beams falling upon a white Paper , or piece of Linnen , will represent various Colours . For the uppermost Colour will be Red , the Lowermost Blew , and the Middlemost Whitish . The Reason of this appearance , is to be fetch'd from the various Transmission of the Rays : For Experience tells us , that Rays passing obliquely or slantingly through a Hole , must needs be refracted , which Refraction is the cause of all this variety of Colours ; forasmuch as the parts of the subtil matter , which we conceive as so many little round Bodies , which role continually through the pores of Earthly Bodies , are variously moved , according to the diversity of the Causes which determine their motion . So as that the Colour , which is represented at the upper part of the Glass , is red ; because the Heavenly Globuli , which transmit the Action of the Light , are much more swiftly whirl'd round , than they tend in a Right line . But a blue Colour is represented in the lower part , because the same Globuli are more slowly in their circular motion , than in their direct and strait tendency . Because there is supposed to be a Caus● which hinders their Circumvolution . But in the Midst a white Colour is seen , because the Heavenly Matter there hath an equal proportion of Circumrotation and Procession . For those Bodies are called White , in which the circular motion of the Globuli is equal to their tendency in Right lines . So that the whole difference of Colours doth only depend on the different proportion of these motions of the Celestial Matter . As hath been more at large declared in my Institution of Philosophy . XXVII . Of a Wood brought from Mexico , which gives a various colour to Water . ATHANASIUS KIRCHERUS , in his Book of the Art of Light and Darkness , tells us of a sort of Wood growing about Mexico , which the Inhabitants call Coati , which communicates a great variety of Colours to water . For if a Vessel be made of the same , and filled with the clearest water , it after a little time standing turns the water into a blue Colour , which continues in the water as long as it stands in the said Vessel ; but being poured out into a Crystalline Bottle , and expos'd to a full Light , it recovers its former perspicuity ; but if it be brought into the shade , it turns green , and if it be brought into a yet darker shade , it appears red , and that very deep , as approaching somewhat to blackness . The water put into a Vessel of this Wood , appears first to be of a blue Colour , because it cannot be question'd , but that the infused Liquor doth enter the pores of the Wood , and fetcheth out many of the small particles thereof ; which being mixed with the moisture , are the cause why the Rays of Light are in that manner refracted and reflected , as is necessary for the production of a blue Colour . Again , when this water is pour'd into a Glass Bottle , it appears clear and transparent , because of the full brightness of the Sun , to which it is exposed . For tho' the particles , which the water had fetched out of the wood , did reflect or refract some of the beams ; yet now the prevailing power of the Light doth efface that disposition of Parts , and makes its way without any let or hindrance through the water . Thus we find by daily Experience , that the Sun shining through a Glass Prism , doth not exhibit the Colours of the Rainbow , tho' they be exactly represented on a piece of Paper that receives the said Rays . Then afterwards this Bottle being removed out of this great and strong Light ▪ into a more moderate or shaded Light , is turned into a curious and pleasant Green ; because from the brightness of the Sun , which affords abundance of Light , the blue Colour , which the Wooden Vessel did produce , is changed into a green , which is compounded of a blue and a yellow . And last of all , when the Bottle is brought into a more shady place , the water appears of a deep or dark red ; because the Redness is weakned by the decrease of the Light , and is changed into a kind of Rusty Colour . XXVIII . Brazile Wood communicates a Red tincture to water . In like manner we know , that Brazile Wood communicates a red Colour to the water wherein it is boiled ; which being put into a Drinking glass , if a little distill'd Vinegar be added to it , it immediately is turned into the colour of Straw or Amber ▪ From which sudden change of Colours , we have good reason to conclude , that all Colours do arise from the various texture of the parts , and the different reflexion of the Light. XXIX . Nephritick Wood yeilds a Golden , blue , and yellow Colour . There is also another kind of Wood , which hath taken its name of Nephritick Wood , from the great use it is of in curing the Gravel , the parts whereof being infused in water , and put into a Glass Vial , do after a few hours ●●●ge the water of a Golden Colour if the Vial be placed between the Eye and the Window , but if the Eye be placed between the Window and the Vial , it will appear of a blue Colour . For when the Rays of Light do enter into the Liquor , they become tinged with a yellow Colour ; but the same represent a blue , when the Rays reflect from the Vial. And if you pour an Acid Liquor upon it , then the blue Colour will vanish , and the whole Liquor will appear of a Gold Colour . The Reason of this is probably no other , than that of the foregoing : For it is evident , that this Wood doth consist of Tinging particles , which are easily resolved in the water , and so far seem to be much of the Nature of Salt ; which particles entring the pores of the Water do so refract the Rays , that they appear tinged with a Gold Colour . And if you admit the Light of the Sun through some Hole , into a dark Room , and place the Vial full of the Infusion of this Nephritick Wood , partly within the Cone of Light , and partly without it , you will observe a vast variety of Colours , caused by the various degrees of the Refraction of the Light. Now the Reason why , after that the blue Colour hath been extinguisht by an Acid Liquor , it should be restored by the Affusion of Oil of Tartar , or a Sulphureous Salt ; and on the contrary why , when the Gold Colour is vanished , it is restored by the addition of an Acid Liquor , is , because Acid Salts do cut and slash the tinging particles into lesser divisions , or at least precipitate them , and so make the Colour to appear more weak and dilute . CHAP. X. Of Occult Qualities . I. What Occult Qualities are . OCcult Qualities , are by the Peripaticks called Hidden Powers , by which Natural things do act or suffer any thing , and whereof no prior Reason can be assigned , as immediately proceeding from the substantial Forms of things . But our Modern Philosophers are at a loss about what the ARISTOTELEANS means by all this Gibberish , who denying all substantial Forms , despair of ever knowing what these Occult Qualities are , which are the immediate products of them . Wherefore the abstruseness of some Qualities doth seem only to depend on the different Hypotheses of Natural Principles ; so as that to those who follow the Peripatetick Hypothesis , the Ebbing and Flowing of the Sea , and the Conjunction of the Iron with the Load-stone , appear to be abstruse and hidden Qualities ; whereas , according to the Principles of Corpuscular Philosophy they are most clear and evident effects . II. Of the Common Opinion , that a Sponge attracts water . A Sponge is commonly supposed to attract water , and to draw it upwards . If we warily consider the thing , we shall find that a Sponge is very improperly said to attract water ; whereas on the contrary , the water doth rather mount upwards to the Sponge , and intrude it self into its pores . For as soon as the Sponge toucheth the water , it somewhat presseth the some , and makes the pressed part of the water to mount up , and enter into the pores of the Sponge , as is evident in a writing Pen , which no sooner toucheth the Ink , but it mounteth up into the Pen by means of the Slit of it . For if the Point of a Pen without a Slit be applied to the Ink , no part of the Liquor will ascend ; or if any part of it stick to the Quill , it immediately drops down . The mounting up therefore of the Water is caused by the pression of the Sponge , whereby the Air is thrust out of its place ; which Air afterwards pushing against the surface of the Water , drives it upwards , and by some Force makes it to enter the Body that lies upon it . III. How New Bread attracts water . New Bread put into Wine , or any other Liquor , will draw up the same 2 or 3 Fingers breadths high , and contrary to the Laws of Nature , without any Pression , operates at a distance . The Wine enters into the Cavities of the Bread , because they are bigger than is necessary , for admitting the parts of the Air only ; and therefore the parts of the Air that are shut up in them , are on every side surrounded with the Subtil Matter , which doth more swiftly agitate them , than they would be moved elsewhere , in case they continued entangled amongst themselves . And forasmuch as all Bodies , which move in places that are too narrow for them , do strive to get out of them ; it accordingly happens , that whilst the parts of the Air do go forth from the pores of the surface of the Liquor , that toucheth it , the parts of the Water , or any other Liquor , do immediately follow it , and possess themselves of the relinquisht place . And because also the parts of the Liquor do better fill the Cavities of the Bread , they are not so swiftly agitated in them , as the parts of the Air ; and therefore do not endeavour to quit the same , except only in order to enter the higher pores of the Bread , and take up the place of the Air , which strives to get out of the Pores thereof . Book . 2. Part. 2. Chap. 10 G. Freman I● . I. Kip. To the Right Honourable Thomas Herbert Earle of Pembrock and Montgomery , Baron Herbert of Shurland , Cardiff , Ross of Kendale , Parr , Marmion & Sr. Quintin , Lord of the Lordships of Vsk , Carleon , Newport and Tredeg , Lord Leivtenant of Wiltshire , one of the Lords of the Admiralty , Lord Privy Scale , and one of the Lords of their Ma t ys . most Honourable Privy Councell &c. a. This Plate is humbly Dedicated by Richard Blome . V. A Sheep flees from a Wolf , a Chick from a Kite , and a Pigeon from a Hawk . A Sheep trembles at the sight of a Wolf ; a Chicken at the sight of a Kite ; and the Pigeon , dreads the approach of a Hawk . Philosophers commonly attribute these Aversions to the mutual hatred that is between these Creatures ; but without sufficient ground . For a Wolf doth not hate a Sheep , but is delighted with it , and pursues it as a convenient Good for him . And the same may be said of a Kite , that pursues a Chicken ; and of a Hawk , that sets upon a Dove . A Sheep therefore at the sight of a Wolf betakes himself to flight , because it is endued with such a Texture of Fibres , that the Light reflected from the Wolfs Body , doth produce such an affection , upon which the motion of running follows . For there are some Rays or Spirits which are continually darted from the Wolfs Body , which painfully affecting the thin Fibres of the Sheeps Optick Nerves , do suitably move the Brain and the Spirits contained therein , and convey them into the Muscles , in such a manner , as is necessary to put them upon a flight . For these Spirits are of a wonderful force to affect and agitate the Body which they push upon , and whose most inward parts they pierce into . VI. Whether any shade can be hurtful to the Body . Some Shades are commonly accounted to be of a hurtful nature , and to cause either Pain , or some other inconvenience . Thus a Serpent flees the shade of an Ash . And those who sit down in shady places , are apt to be overtaken with sleep . These Effects are not caused by the Shade , which being somewhat Privative , cannot have any positive Vertue or Effect ; but from the steaming current of particles proceeding from Bodies , and more particularly from the neighbouring Trees , Plants , Pools , or any other Bodies . And that a person that sits , or lies down in the Shade , is very susceptive of these steaming particles that continually flow from Bodies , and very like to be affected by them , may be easily conceived , for that in Summer-time the Pores of the Body are more open , and stand ready to receive these outflowing little Bodies ; and therefore no wonder if they be affected by them . VII . How Quicksilver kills Worms . Thus the Effects do prove that subtil and invisible Steams do continually proceed from Quicksilver ; for which Reason those Artificers , who are much conversant about it , are used to keep Gold in their Mouths , with which they intercept the noxious Steams of the Quicksilver , which set themselves about the Gold , and cleave to it , and discolour it . Moreover , drops of Quicksilver have been found in the Heads of these Artificers , and in other parts of their Bodies . For there are certain pure and subtil Effluvia or out-flowings , which proceed almost from all Bodies , which retain the Nature and Vertue of the Body whence they proceed . Neither is it to be doubted , but that Quicksilver boil'd in Water , doth communicate a Vertue to it , of killing Worms . VIII . There is no vertue in bare words . It is a common assertion amongst the Cabbalists , that there is a great Vertue in Words ; as by which , extraordinary Effects may be performed . And I remember to have read somewhere in Paracelsus , that upon pronouncing the words Osy , Osya , Serpents stop their motion , and lie still as if they were dead . But this is an ungrounded Opinion of the Cabbalists , forasmuch as the bare words of the most worthy Tongue have no efficacy at all ; no more than the Vertue of a Man , or the signification of some Holy Thing , can communicate any Vertue to the Words pronounced by the one , or importing the other . For tho' it cannot be denyed , but that Orators and Poets do excite Passions in the Minds of their Auditors ; yet this is not by any hidden Vertue that is in their Words , but by the strength of their Reasons , and the aptness and Musical cadence of their words . Wherefore what PLINY tells us in the 2 d Chapter of his Natural History of the Preservation of the Fruits of the Earth from harm , by some words pronounced over them , and of the charming of Serpents , ought to be lookt upon as Fiction . Seeing that words can operate nothing in a natural way , and have nothing of any Sympathetical Connexion with intelligences or the Powers of Heaven . IX . That a Nose cut out of another mans flesh , doth rot or perish upon the death of that man. It is a common Story , that a Nose cut out of the Flesh of another Man , upon the death of him from whom it was taken , corrupts and rots as the Body of the dead Person doth . And the same is said of the effect of the biting of a Mad Dog , which continues till the Death of the Dog , and then ceaseth . No sufficient Reason can be given to verifie these Effects ; and therefore I suppose that these things are reported by Authors without sufficient faithfulness ; or if any such thing ever hapned , that it was an effect of chance , and not of any Physical Causality . X. Whether VVounds at a distance are curable by the Sympathetick Powder . It is also believed by many , that wounds at any distance may be healed by the Sympathetical Powder , by applying the Powder to the Weapon that made the Wound , or to a Rag that hath any of the Blood of the Wound upon it . But tho' many great Authors maintain this for a truth , yet I am not easily persuaded to confide therein . For we do not find in calcined Vitriol , which is the Basis of that Powder , any thing conducive to the healing of Wounds , besides an adstringent Vertue , which is very proper to stop Blood , and to close and heal a Wound . And tho' the Spirits proceeding from the Vitriol , may be supposed to exert some of their efficacy at a small distance , yet is it not certain , that the Power thereof can be conveyed so far as is reported . Neither will the instances that are brought to prove this effect , be of any great weight with those who consider how apt the Minds of Men are to believe any stories , and how many do seem to take delight in being imposed upon , rather than to be lookt upon as incredulous . So that it seems that these Cures ought rather to be attributed to the cleanness of the Wounds ; since in the Sympathetical Cure , charge is always given to wash them with Urin , which is endued with an abstersive Power , by reason of the Salt that is contained therein . And this is no more than the Dogs themselves do , who are used to cure their wounds by licking them . XI . By what means some may be cured by the Sympathetick Powder . But if wounds , at any time , have been cured with this Powder , the same must be performed by the Effluvia of little Bodies : Which tho' not always , yet very frequently retain the nature of those Bodies from whence they stream forth , and transmit the same to a vast distance ; and by this means the particles proceeding from one Body , entring the pores of others , may there produce the same effect , and move the Senses much in the same manner as the said Bodies themselves would do by Corporal Contact . XII . VVhence it is that that Twins are touched with the same affections . There is a great Sympathy observed between Twins ; so that if one of them chance to be sick of any disease , the other is frequently seized with the same . The Reason whereof is , because they both have the same Texture of their Fibres , and the same Temperament of Humours ; so that if it happen , that if by any distemper of the Air , or by any hurtful Meat or Drink , the one of them falls sick , it cannot well be otherwise , but that the same effect must happen to the other , because of the great conformity of their Frame and Temper . And therefore it is that they are subject to the same motions of Passions ; so that what produceth loathing in one , will effect it in the other ; and whatsoever is desired by one , will also be desired by the other ; because a like Texture receives the same affection from one and the same Object , and consequently stirs up the same Appetite and Passion . XIII . How some Old VVomen bewitch little Children . It is commonly said , that some Old Women bewitch Infants . Which may be , because these Old Women , by the strength of their Imagination , intending their Nerves and Muscles , may dart forth from their Eyes some noxious Spirits , whereby the tender and easily susceptive Body of the Infant may be greatly prejudiced , especially if the Infant be near to the Woman . For bewitching , as PLINY tells us , proceeds from the Spirits of the Witch , entring through the Eyes of the Bewitched , into their very Heart . Indeed it seems probable enough , that by this darting forth of Spirits , much mischief may be done ; since it is notorious , that a Woman that hath Those upon her , doth produce Spots and Stains in a Looking-Glass : And that one who Coughs , stirs up Coughing in others ; and one that Yawns , a Yawning in him that sees him . XIV . VVho are most obnoxious to VVitchcraft . Whence we may understand the Reason , why all are not equally obnoxious to Witchcraft or Fascination , but only Infants and Youth , and others who have their Pores more open ; and therefore are liable to suffer from the incursions of the Spirits and effluvia proceeding from others : Especially if the imagination of the Witch be heightned by Love or Hatred ; because in this case they attack the party bewitched with greater force and violence . Wherefore care ought to be taken to keep little Children at a distance , and out of the sight of such persons . XV. How a Scorpion applied to the place stung by him , draws out the Poison . A Spider or Scorpion that hath bit or stung a person , being bruised , and applied to the part affected , draws out the poison . The Reason is , because the substance of a Spider or Scorpion is like a Sponge ; which , whilst the parts that are sever'd by the contusion , shrink by means of the Nerves , do take up the adhering venom , and draw away that which is got in . For this is effected much in the same manner , as Oyl is washed out of a Cloath by means of Soap ; for as the particles of Oyl which are got into the Cloath , do easily embrace those of the Soap , as being of a like nature , and are carried away with them : So the particles of the Poison sticking to the wound , do easily join themselves with those that are found in the bruised Animal applied to it , and by this means the wound is freed of them . XVI . VVhence it is that some Stones perform the like effects . KIRCHER tells us , that in China there be many Serpents , which are called by the Portuguese Hat-bearers , because they have a Skin that starts up on their Heads , not much unlike a Hat , in which little stones are found , which being reduced to Powder , and mixed with Terra Sigillata , and applied to a poisonous wound , stick fast to it and draw out all the Poison , and then fall off from the wound of themselves , which are afterward washed clean in Milk , in order to be used again as before . For indeed most poisons are better overcome by Alexipharmacs , than by Vomits or Purges . XVII . VVhether a VVolf causeth a Hoarsness in those whom he sees first . It is commonly believed , that a Man who is seen of a Wolf before he sees him , grows dumb , and is unable to utter a word , or make the least noise . Tho' this be an old Story , yet there appears no ground at all for it : Seeing that Experience teacheth , that whether a Wolf see a Man first , or or whether a Man see the Wolf , the same commotion or disturbance follows . I my self have very often lookt upon Wolves , yet never perceived thereby any Hoarsness , or the least defect in my Voice ; but on the contrary , have many times by my shouting , made them run away . But how does it come to pass then , that some persons at the sight of a VVolf do contract a Hoarsness , and become Dumb of a suddain ? Why this proceeds only from Fear , when the great concern they either have for their own lives , or for the safety of their Company , puts them into a suddain consternation ; for then endeavouring suddainly to cry out for help , they hurt their Lungs by the great force put upon them , and the VVind Pipe by fetching in of too much breath , becomes , as it were , choaked . To which may be added , that the Muscles of the Tongue being slackned , by the great defect of Spirits , cannot readily be made use of , for the forming of the voice . So that by the failing of all these Instruments , it cannot be otherwise but that a Hoarsness must be caused , and the Tongue disabled from uttering an articulate sound . XVIII . VVhat is the Reason of the Antipathy which is found amongst Plants . Some Plants have an Antipathy against each other ; as the Oak and the Olive Tree , Cabbage and Rue , Fern and Reed , which cannot endure the neighbouring of each other , nor can touch one another without some prejudice . The Reason of this hatred is , because these Plants are desirous of one and the same Alimental Juice ; and therefore the stronger of them doth draw all that juice to it self , and by this means robs the weaker of its necessary food , which must needs hinder it from growing and thriving as otherwise it would . Or else we may say that Plants set near one another , may hinder each others growth , in that the emanations or effluvia which proceed from their Roots , may be noxious to each other . For the Olive Tree communicates such a bitterness to the ground round about it , that it spoils the Cabbage and Lettice that grows near it . And Fern hinders the growth of Reeds by the steams proceeding from it , which obstructs their Pores , and disturbs the Texture of their Fibres . XIX . VVhat the Reason is of the Sun-flower turning towards the Sun. The Heliotrope or Sun-flowers , always turns it self towards the Sun , and doth so follow its motion , as to face it continually . Theophrastus makes mention of some of these Heliotropick Plants , growing about the River Euphrates , which at the going down of the Sun , do so drop their Heads and Flowers into the River , that they cannot be reached with the Hand ; but as soon as the Sun riseth , lift them up again to their former height . This , I suppose happens , because that Plant abounds with much and gross moisture , which being agitated by the Beams of the Sun , and thereby rarefied , cannot be contained within the same bounds , and therefore strives to make its way through the most open Pores , that is , those which are over against the Sun : and forasmuch as the Neck of this Plant is very plyable , the agitated moisture which breaks forth from it in the finest Threds , turns it self that way towards which the particles of the moisture tend . The extraordinary moisture of this Flower may be confirmed from that Dew which lies upon the midst of it , when the Sun is at the highest and hottest ; which cannot be said to be the remainders of the morning Dew ; forasmuch as that vanisheth a few hours after the Sun Rising ; and therefore must be that humour , which upon the presence of the Sun , doth flow from its Stalk , and is carried up to the Flower . XX. The Explication of a wonderful Sundial . In like manner a reason also may be given of that admirable Dial , invented by F. Linus at Liege , whereby a little Ball , swimming upon the water , did shew the hours , and exactly imitate the motion of Heaven , after the Example of KIRCHER , who having put some Seeds of the Sun-flower into a piece of Cork , found that they turned the Cork towards the Sun , and that by fixing a hand to it , they exactly pointed out the hours placed round the inside of the Vessel . For seeing that the Sun-flower is turned towards the Sun , not only Eastward , but VVestward also , it must needs point to the hours noted on the sides of the Vessel . XXI . VVhether the Bones of Animals , and Shell-fish be fuller at full Moon , than in the wane of it . The Bones of Animals are filled with Marrow at the full Moon ; and Crabs at the same time do more abound with flesh ; whereas in the wane of the Moon both are decreased . These Effects , tho' commonly asserted to be so , yet many most exact observers of the works of Nature testifie , they could never discern in either of these any such encrease or decrease , but that the Bones of Animals , as also Shell-fish at any time of the Moon are promiscuously found either full or empty , or more or less fleshy , according as it may happen from other accidental Causes . XXII . Why Crabs and Lobsters are more full of fl●sh at one time than another . So that if at any time it happen that Crabs , Lobsters or Oysters be found more full of flesh at one time than at another ; the reason is , because they have then met with more plentiful Aliment : For we find that of Fishes that are taken at the same time , and in the same place , some are much fuller of flesh and fatter than others ; and that those Fish which are taken out of the Nets , as soon as they are caught , are fuller of flesh , than those which are left in the Net a good while before that they be taken out . XXIII . VVhy the Skin of a Stag swims above all other Skins . The Skin of a Stag , if it be put by Tanners at the bottom of their Fat , and the Hides of other Beasts laid upon it , as soon as water is poured into it , never rests till it have got above them all , at the top of the Tanning Pit. GASSENDUS imputes the cause hereof to the wider cavity of the Stags Hairs ( for the Microscope assures us , that the Hairs of Animals are all of them so many hollow Pipes ) which being filled with Air , endeavour to get above the water , as a Bladder full of Air doth . He supposeth also , that this is a great help and furtherance to the swiftness of that Animal , because the said Pipes being dilated by the heat of the motion of the Stag , doth much contribute to their Lightness : as it is also very probable , that the Quill part of the Feathers of Birds are a great help to their being easily supported in the Air. XXIV . VVhy Persons bit of the Tarantula , do skip and dance . They who are bit by the Tarantula , are so delighted with some certain Tunes , as to be thereby stirred up to strong and continual Dancing . The Reason whereof is , because the poison of the Tarantula doth alter the Temperament of the Body , and particularly so affect the Organ of Hearing , as to comport with those Tunes , wherewith that Insect is delighted . For as there are several sorts of these Tarantulae , whereof some are affected with these Tunes , some with others ; so that as the Piper or Fidler plays these , or the other Notes , so these , or other of their Insects begin to frisk , and cease as soon as ever the Tune is done . Accordingly it seems , that the venom of these Insects , being diffused through the Body of Man , and mingled with the Spirits , and afterwards excited by such notes , is moved after the same manner , and also impresseth the same motions on the Spirits , which by means of the Nerves and Muscles , produce a Dancing , corresponding with such notes . And this is the Cause of the recovery of him that is bit , because by this quick motion , the poison is discust and exhaled together with the Sweat , provoked on this occasion . XXV . How Medicaments do purge . Some Medicaments do purge by their smell only ; others by being handled , or applied to the Navel . The Reason is , because the odour only of a Medicament doth as strongly affect the Nerves , as they are affected by it , when taken inwardly ; that is , when the Fibres or Strings of the Stomach and Guts are twinged and vellicated after the same manner , as they are when the Medicin is swallowed down into the Stomack . For the parts of Medicaments are commonly very small and sharp , hard , swiftly agitated , and very penetrative ; so as that by this means they do irritate and excite the Membranous and Nervous parts of the Body , and provoke them to expulsion . Whence we may conclude , that almost all the properties and virtues of Medicaments , which are commonly added to the Catalogue of occult Qualities , may be explained and resolved by mechanical Principles and Affections , whether they produce these effects , by a likeness , analogy and familiarity of Nature , or whether they exert this their efficacy by way of irritation . The Third Part OF THE HISTORY OF NATURE . OF THE WORLD , AND HEAVEN . CHAP. I. Of the Beginning of the World. I. The Opinion of Aristotle and Epicurus concerning the Worlds Original . THO' we be sufficiently assured by Revelation , concerning the Worlds Original ; yet it will not be altogether useless , to see what Reason can say in the case , and whether by her conduct we may not be able to discover the Beginning thereof . ARISTOTLE maintains the World to have existed from Eternity , in his VIII th Book of the Physicks , and in his 1 st of Heaven , where he endeavours to prove Motion to be from Eternity , and that no temporal Principle of Motion can be admitted . To which he adds also , that it is no way agreeable to the First Cause , to be Idle ; and that therefore we must of necessity own , that there must have been something moveable from all Eternity . And as for EPICURUS , he makes Matter to be Eternal , but the World , Temporary , and proceeding from the fortuitous concourse of Atoms ; whereof LUCRETIUS treats in his 4 th Book of the Nature of things . II. The Opinion of Plato . The chiefest amongst the Ancients , that attributed a Beginning to the World , was the Divine PLATO , who tho' he acknowledgeth it to have been begot from Eternity , yet asserts it to have proceeded from GOD by a kind of Emanation , as the Sun-beams from the Sun. And surely he very well deserv'd his Name , forasmuch as from the Contemplation of Created Things ; he discovered the Maker of them ; and from the nature of Effects , raised himself to a view of the Efficiency of the Supream Cause . But let us hear him discoursing the Point in his TIMAEUS : The Universe , saith he , is seen , felt , and hath a Body ; all which things move the Senses , and those things which move the Senses , are known or discerned by the Senses . Now it is apparent , that such things as these are of that nature as to be generable and generated ; but whatsoever is generated , we assert must be generated by some Cause . It is a thing of difficulty indeed to find out the Maker and Father of this World ; and after that you have discovered him , to declare him to the Common People . III. The Disposition of the Parts of the World , proves the Maker of it . Indeed there is nothing in the Universe , which doth not preach the Creatour of it ; not doth Nature represent any thing to the Eyes of Men , which doth not speak its Author , and excite us to adore and praise him . Who is there , that by the Disposition of the Parts of the World , is not forced to own its Orignal , and to confess that it is not Eternal ? Shall we imagine that all these things , as EPICURUS will have it , were the effect of blind Chance , and that it stumbled upon all these curious and beautiful Effects we do admire ? Were the Earth , the Heavens , the Stars their own Causes , and stated in that necessary and comly Order , without the Deliberation of a Contriver ? What virtue or force is there in Atoms ? What power in Matter , towards the production of a World , beautified with such an infinite variety of Wonders ? Or , if these Atoms were the Framers of the Sun , Earth and Planets ; why did not these blind and stupid Artificers , jumble themselves as well into Cities , Houses , Churches , and Piazza's for us ? Since these are Instances of a more easie and obvious Artifice , and such as human Industry can furnish . Book . 2. Part 3 Chap. 1. G. Freman Inv I. Kip To the Right Honourable Iohn Caecill , Earle of Exeter , Baron Caecill of Burleigh &c. a. This Plate is humbly Dedicated by Richard Blome . V. The Parts of the World being Corruptible , constitute the whole so . The Whole is of the same nature as its Parts , as being the result of them , and deriving its distinction from their Diversity . Now nothing is more notorious , than that the Parts whereof the World is composed , are subject to Rise and Fall , to Generation and Corruption . The Earth is nothing else , but a great Theater , where these Changes are continually represented , and which , according to the different Vicissitudes of Time , is differently drest and mark'd . The Fire perisheth daily , and that which seems of such insuperable Force , vanisheth in a moment . Water is suckt out of dry Bodies , and by its motion wherewith it penetrates Bodies , becomes turned into Flowers and Grass . Nothing in the World is of any long continuance ; and it is a clear Demonstration , that that had a beginning of its being , which is continually hasting to its end . VI. An Objection . Some endeavour to avoid the dint of this Argument , by saying that Generation and Corruption are incident indeed to the Parts of the World ; but that nothing hinders , but that the Whole may continue for all this for ever ; forasmuch as the Total Sum continues still the same , and is only changed as to some Externals , much in the same manner as Wax , by admitting the various impressions of Seals , only changeth its figure , still retaining its substance unalter'd . VII . Answer . We readily grant them , that no other Change happens to this World , but what is Accidentary ; yet can it not be concluded from thence , that the Whole is capable of being dissolved . For if one or the other Part may perish , why not 20 , or 100 , or 1000 , nay , all of them ; since we find various Destructions hapning in divers places , and that many things are oft ruin'd in one day , which had continued untoucht for many Ages ? And tho' , it may be , these things may not be very frequent , and have the Intervals of many Years between them ; yet cannot we thence infer , that they can't happen : Seeing that many things throng in upon the World at one time , which have been unknown and unheard of for many Ages . The Instance of the Wax is nothing to the purpose , whose Change is only outward : For the World is capable of those Intestine motions , which one day or other will be the overthrow of it . Do not we daily see New things start up , and Old things sinking and perishing ? We have therefore good reason to conclude , that as we see that Changes happen to the Parts of the World , so the whole is obnoxious to the same alterations and perturbations . Hence LUCAN ▪ in his First Book : One Common Fun'ral-Pile the World shall burn , Mix Bones with Stars , and all to ruin turn . VIII . History bears witness to the Beginning of the World. But forasmuch as our design here is , to set down an History of Nature , we will endeavour to derive the Original of the World from the Monuments of the Ancients . We have no History that gives us any account of things that passed before the Theban and Trojan War. But if the World be Eternal , and consequently without all Beginning , how could it be that the Historians and Poets of fore-going Ages should not have deliver'd to us the Deeds of the Heroes of their Times , which they atchieved during such immense Spaces of Time , or the Laws enacted by Legislators ? Wherefore since nothing of these is any where to be found , it affords us a tacit Argument , that the World was Created , and had its beginning not long before those Times . IX . The same proved from the Inventors of things . Besides , who will say , that the VVorld hath been from Eternity , when as , besides the Testimony of Historians , the Improvement and Invention of Things and Arts , shew it to be of no over long standing ? For the account which the Ancients give us of Men , is , that they liv'd after a Barbarous manner , not much different from that of Beasts ; and that they did not Feed , as we do now-a-days , but maintain'd their Lives in the open Woods and Fields , with Acorns and Berries , as MACROBIUS tells us ; and that it was not till long after , that they began to Till the Ground . Besides , is not this a strong Argument for the proof of the Non-Eternity of the VVorld , that the Greek History it self doth not make mention of any Matter of Fact , beyond the Space of 2000 Years , there being nothing memorable related in History before NINUS , who was the Father of SEMIRAMIS . Now if the World was from Eternity , why were not all things highly improved , during that vast Vicissitude of innumerable Ages ? Or , how comes it to pass , that New things are yet Invented ? All these things are strong Arguments against the Eternity of the VVorld , and give us great Reason to suppose , that as the VVorld had its Beginning ; so all things in successive Years were Invented , Cultivated , and Improved . X. The Eternity of GOD doth not prove the Eternity of th● World. Neither are we pinch'd by that Objection which is commonly made by the Platonists , that nothing hinders , but that the VVorld might have been produc'd from Eternity ; seeing it is not repugnant for some Effects to be coexistent with the Principle of their Emanation . For the Question here is not , Whether the VVorld might not have been Eternal , and Coexistent with its Creat●ur ; but whether it be really so ? Since it is evident , that GOD doth not act of Necessity , but freely and spontaneously , after the same manner as a Workman is the Cause of his VVork . For tho' the Idea of the VVorld be granted to be from Eternity in the Mind of GOD ; yet doth it not follow from thence , that the Work made by it is Eternal also , except we should affirm , that the thing conceived is inseparable from the perception of it ; and that a House is built , as soon as the Architect hath conceiv'd the Draught of it in his Mind . XI . Arts prove the World , not to be of any long standing . Arts also prove the Beginning of the VVorld ; seeing that most of them can be traced up to their first Inventors , and that not through any vast Interval of Time. For we know who first Invented the Plough ; who furnish'd Men with the use of Iron , for the destruction of their own kind : who first taught the Art of Fencing ; who , that of Dancing . But if the VVorld never had any Beginning , why were not Things and Arts improved many Ages ago to the same height , and beyond what they are now ? How came it to pass , that the Art of Printing hath been so lately known in the VVorld ? What was the Reason that Vines were no sooner planted ; and that Olive-Trees , for the succession of innumerable Ages , were banisht from the Fields ? What can be imagin'd the Reason , why the Mariners Compass was not found out till near our Days , which is of that use to us for the Crossing of the Seas , and towards the discovery of New-found Lands and Men ? All these Instances plainly overthrow the VVorlds Eternity , and prove it not to be of any very long standing . Which made LUCRETIUS say , — the VVorld is new , Nor can it many Ages of its standing shew . XII . What time of the year the VVorld was made . It is a thing controverted amongst Authors , about what time of the year the VVorld was made ; some allowing this advantage to the Spring , and others to the Autumn . Tho' indeed I can see no Reason at all , why either of these Seasons should be preferred before the other , seeing that both continually reign in one part or other of the VVorld . Moreover , it seems absur'd to determine the Beginning of the VVorld to one Season of the year , forasmuch as all the 4 are found in it . But if this Question be meant of that part of the VVorld where GOD at first Created Man , and where Men first inhabited , it seems probable that the VVorld was Created at the time when it was Autumn there ; seeing that it is most agreeable to Reason , that all things were Created by GOD , and that nothing is made by him , but what is most absolute and perfect in all degees . CHAP. II. Of the Creation of Things , and of the Ranging of the several parts of the World. I. The Creation of Heaven and Earth , as it is described by Moses . MOSES , whose History is owned not only by Modern Philosophers , but by the Ancients also , in the 1 st Chapter of Genesis , describes at large the Creation of the VVorld , beginning with the production of Heaven and Earth , in which two , as the Center and Circumference , he comprehended the whole Universe : In the Beginning , saith he , GOD created the Heaven and the Earth : But the Earth which was cover'd with the water , and involved in Darkness , was empty and void . For the Spirit , or Subtil Matter , did lye upon the whole Mass of the Earth , to excite and stir up its sluggish consistence ; yet because it was only moved in a huddle , and without any certain determinate motion , the Earth all this while continued void , that is , Invisible , until by the Commanding word of the Almighty , Light was made , which might distinguish the Times , and discover the distinct appearance of all things in their several places . II. How GOD ●t first moved the Created Matter . For we are to suppose , that GOD having Created this Immense , Extended Substance , which fills the the Length , Breadth and Depth of the VVorld , he divided the same into infinite Parts , some of one figure , and others of another ; some greater , others less ; and that this Variety is much greater than our Spirits can reach . We are also to conceive , that GOD , in dividing the Parts of the VVorld , hath not left any void Spaces between them ; but that all the difference or division he hath made between them , consists in the diversity of their motion , which he hath given to every one of them ; ordering it so , that from the very first instant of their motion , some of them began to move one way , and other another : To which if we add this , that the Parts of the Matter are impenetrable , it will appear evidently , that GOD could not continue to move them , without causing an infinite Variety in their motion , until at last they all agreed to move about different Centers , and consequently to constitute divers Vortices or VVhirlpools . III. How Stars came to be formed in the Center of every Vortex . And forasmuch as all Bodies that move Circularly , do continually endeavour to withdraw from the Center of their motion ; and that the strongest always withdraw themselves further than the weaker , it follows of necessity that the Matter of the Second Element , which is more strong than that of the First , as being more solid , must withdraw themselves further from the said Center of their motion ; and that in this their withdrawing , they drive downwards to the Center those Particles of the First Element , that are more than are necessary to fill the Spaces , which the Particles of the 2 d Element leave open between them . Whence it follows , that about the Axis of each Vortex , there must of necessity be a Body which is only composed of the Matter of the First Element , which every way pusheth the Second Element , that surrounds it , and pusheth it with Force enough , to have the motion transmitted , almost in an instant , at certain Distances . And it is in this pression of this Subtil Matter , which is at the Center of each Vortex , and which endeavours to withdraw from it , that that Light doth consist which appeared the first Day of the Creation . IV. The First Days work . But forasmuch as at the Beginning , there was not any great store of the Subtil Matter in the Centers of the Vortexes , the Action wherewith the Globuli were pressed , could not reach far ; and therefore those Spaces to which the Effect of that Action could not reach , continued obscure , and cover'd with Darkness . And accordingly , by this mixture of Light and Darkness , the World became distinguisht into several Provinces , and by the penetration of the Subtil Matter through all Bodies , the thinner and more subtil Parts were distinguisht from the more thick and gross , and the light from the heavy . And this was the Work of the First day , and an Argument of the Omnipotence of the First Being . For nothing was produc'd anew the following days , but the things already made were ranged and order'd , and a proper place assigned to every Body . V. How the Vortexes were formed . And forasmuch as GOD could not move the parts of Matter with different or opposite determinations , without making them to hit directly or indirectly against one another , those which run against one another indirectly , must of necessity be reflected different ways ▪ by Angles of Reflexion equal to those of their incidence : But they could not so reflect themselves , without meeting with other Parts , which turned them aside in like manner : So that meeting with a 2 d repulse , and afterward with a 3 d , 4 th , and so on , they were at last forced to move about different Centers , somewhat in the same manner as the water of a River , is forced to move so , when it meets with new stops in its way ; and thus made up several Vortexes , differently situated with respect to each other . VI. The Second Days work . On the 2 d Day , after that a Firmament was interpos'd betwixt the Waters , some of them had a place allotted above it , others under it , to water the surface of the Earth , and for the generating and feeding of Fish . For if we enquire into the Etymology of Firmament , we shall find it to signifie no more than a great and diffused Extension , which we suppose to be nothing else , but the Disposition of the Vortexes , by means whereof they became so ranged , as that the Ecliptick of one Vortex , did answer to the Poles of its Neighbouring Vortexes , by which means they were so far from hindring the motion of each other , that they rather promoted the same . Whilst therefore the Heavenly Matter did continually run through these vast Bodies , the waters became divided from the waters ; and those which covered the Earth , by the portion of the Firmament , were separated at a vast distance from those other waters which did lye upon solid and thick Bodies . And consequently , the waters that were under the Firmament , were divided from the waters that were above the Firmament . For it is evident , that Moses calls the Heavenly Bodies , Upper or Superiour ; and the Earth , Inferiour or Beneath , with respect to us . VII . The Third Days work . On the 3 d Day , the waters were gathered into one place , and the dry Land appeared ; because when the Earth was wholly cover'd with water , so as that no part of it did appear , it seemed good to the Author of Nature , to gather the waters into some certain places , to the end that the Surface of the Earth being freed from them , might bring forth Grass , Herbs and Trees , from those several Juices , which running through the Bowels of the Earth , were joyned to divers Seeds , whose pores suited best with the figures of them . Where upon the Earth was called the Dry Land ; and the gathering together of the waters was called , Sea. But forasmuch as the Roundness of the Earth did hinder the water from running into one place , and that there was no Cavity sufficient to receive that immense Heap of waters , we are to believe that the Mountains were created on the same Day , and other Rising parts of the Earth , which leaving deep Vallies between them , made way for the Reception of the waters . VIII . The Fourth Days work . The Matter of the VVorld being thus orderly ranged , the next work was to adorn the same : For on the 4 th Day , 2 Great Lights were placed in the Firmament of Heaven , that they might be for times , days and years ; that is , that by them the Diurnal and Annual Circumvolution of the Earth , and the other Planets , as likewise the Circumvolutions of the Sun , might be known and determined . At the same time there were also created many Stars , having a Light of their own , which they dart abroad every way . For seeing that the Matter of the First Element did continually increase , by means of the motion of the particles of the Second , and that there was a greater quantity of it in the Universe than was necessary , to fill those Spaces that are left betwixt the Globuli ; all the remainder of it , after that those Spaces were filled , run to the Centers of the Vortexes , where it composed some most fluid Spherical Bodies , viz. the Sun and the fixt Stars . For after that the particles of the 2 d Element were still more worn away , they took up less place than they did before , and consequently did not diffuse themselves quite to the Centers ; but equally drawing from them , left their Spherical Spaces , which were filled with the Matter of the First Element , flowing thither from all parts . And therefore the collection of the Subtil Matter , in the Center of our Vortex , in which the Earth is , with respect to it , was the Greater Light , or the Sun ; and the Collections in the Centers of the other Vortexes , Stars : And that Matter , which of those great Masses which approached near to the Earth , was found most fit to drive the Light of the Sun towards it , became the lesser Light , that is , the Moon . IX . The work of the Fifth day . On the 5 th Day , GOD commanded the waters to bring forth Living Creatures , and the Fowl that fly above the Earth , in the Firmament of Heaven : And the Creeping things also , which without Feet crawl upon the Earth . And tho' the Scripture seems to attribute to Fishes and other Beasts , a Soul , produc'd out of the VVater and Earth ; yet nothing else is to be understood there by the word Soul , but only some Bodies in such a manner fitted and adapted to the Organs of Fishes , and other Animals , that they cause them to live , to feed and grow . X. The Sixth Days work . Lastly , After that the House was now perfected , and the Palace fully furnish'd and adorn'd for the reception of its great Guest , the Little-VVorld enter'd the Greater , being endued with Life , Sense and Reason ; that he might be the Lord and Commander of the Universe , to whom the Fishes of the Sea , the Birds of the Air , and all the other Living Creatures of the Earth , might pay their Homage and Obedience . These things thus order'd , GOD made an end of the Works he had made . This Creation of the VVorld hath , by DANAEUS , been comprehended in short Verses , in his Christian Natural Philosophy ; which in English speak thus : The First Day made the Heavens , the Earth , and Light : The Second , brought the Firmament in sight : The Third , gave the Sea Bounds , and Grass to th' Earth : The Fourth , to Sun and Moon , and Stars gave Birth : The Fifth , made Fish o' th' Sea , and Birds o' th' Air : The Sixth , gave Beasts , and Man , GOD's chiefest Care : The Seventh , and last , appointed was for Rest. XI . Why the World was Created in the time of Six Days . We need not here insist upon the Opinion of some of the Jews , who do not think it probable that the World was Created in 6 Days ; and therefore do suppose , that this determination of Days , is to be taken Allegorically : To which some of the Ancient Fathers have been inclin'd ; forasmuch as GOD , in Creating of the World , did not proceed in such a manner , as absolutely he might have done , but in such a manner as may be best understood and apprehended by us Mortals . For he ordered the Creation thus , that we weak Men might know , that he works nothing without the greatest exactness and order ; because we are not able to conceive , how any Order could be observed in a simultaneous Creation . CHAP. III. Of the End or Destruction of the World. I. Whatsover hath had a beginning , must of necessity have an End also . FRom what hath been said , it is evident that the World was Created , and that those things that had a Beginning , are subject to Corruption and Dissolution . For why may not we attribute a Principle of Destruction to that , which we own to have had one of Production ; and suppose that that which once began to be , will meet with a time wherein it must cease to be ? For is not the Matter , whereof the whole Universe doth consist , the Original and Cause of Dissolution ? And do not all things that we see , decay daily , and hasten to their End ? For he seems to be but little acquainted with Natural Philosophy , who supposeth that to be Eternal which hath had a Beginning , as VELLEJUS saith , according to the Opinion of PLATO , as CICERO sets it down in his 1 st Book de Natura Deorum . For where can we find a thing put together , that is not subject to be taken in pieces again ? Or , where is that thing which hath Beginning , and shall not have an End ? And accordingly LUCRETIUS tells us , in his First Book . As Beasts depriv'd of Food , so things must die , As soon as Matter fails of just supply . II. The Opinion of the Ancients , concerning the Duration of the World. But you will say , that there have not been wanting some Philosophers who have attributed Eternity to the World , and have conceived this Great Fabrick so admirably contriv'd and built , as not to be capable of Dissolution . Which Opinion hath been maintain'd by ZENOPHANES , MELISSUS , ARISTOTLE , and others , who accused those of Impiety , who maintain'd , that the World would perish . Neither were PLATO and PYTHAGORAS Enemies to this Opinion : For tho' they believed that the World would have an End ; yet withal they supposed , that GOD only was to be the Dissolver of it ; as thinking it unbecoming him , to make a Work that should be dissolvable by any other Hand than his own . That it is the property of Parents , to desire the preservation of their Off-spring , and by no means to desire their Destruction . III. The World is of its own nature Corruptible . But these are the Judgments of Blind-men , who without having a due regard to the Constitution of the World , thought the parts thereof to be joyned together by such strong Ties , which no Ages could be able to dissolve . But to oppose Authority to Authority , were not the Epicureans and Stoicks of another Opinion ? The latter of whom supposed nothing to be Immortal , but Jupiter alone , and asserted that the Earth , Sea , Air and Heaven , were all to have an End , and to be changed into other Bodies ; as the Tragical Poet seems to foretel , in Hercul . Oct. The splendid Roof of Heaven shall fall , A certain Ruin doth it attend : Yea , Glorious gods themselves , and all , In Chaos and Dark-Night shall end . But what need have we of the Testimonies of the Ancient Philosophers , to assert the Corruption of the World ; seeing that the present decays of the VVorld do manifestly prove its declining , if not decrepit Age ? Who doth not perceive , that all things are in a state of Decadence , and hastning on to their last end ? Do not we see , that the Seasons of the year decline , and want much of their former force and vigour ? Doth not the Heat of Summer grow less every year than other ? And is not the VVinter Season changed from what it used to be ? How late , cold , and wet are our Springs ? And how few seasonable and fruitful Autumns do we enjoy ? So that all things apparently fall short of their Primaeval virtue . If we descend into the Bowels of the Earth , what a small quantity of Gold and Silver do we meet with there ? How few Veins of Metals are now-a-days discover'd , if we compare them with those multitudes that were found of Old , and in the Times of our Forefathers ? IV. The general Decadence and Declination of things , portends the approaching End of the World. This Failure and Decrease is also observable in other things ; for who doth not find , that there are not so many Men in the VVorld as formerly , and that the Fields begin to want Husbandmen , the Camps , Souldiers ; and the Sea , Seamen ? And shall not we from this General defection conclude , that Old Age hath overtaken the VVorld , and that all Creatures are hastning to their Exit ? This therefore is the unalterable Law and Decree of GOD , that oll things which have had a Beginning , must decrease , grow old , and die at last . V. The shortness of the Life of Man is an Argument that the World grows Old. But what needs so many words to prove , that the VVorld is grown Old , since we s●e that mens Lives grow shorter every day , being now contained within a narrow compass , as LUCRETIUS expresseth it in his First Book : Man's Age declin'd in Ancient Homer's days ; But now his Strength and Stature both decays . Formerly Men lived 800 or 900 years , and upward ; whereas now it is look'd upon as a Prodigy , to reach 100 only ; and if any by great chance reach so far , then are they encumbred and tormented with so many Ails of Mind and Body , that they long for nothing more than Death . And shall we , after all this , suppose that the Eternity of this VVorld can be consistent with the continual crumbling away thereof ; the defection of the Seasons of the year , and the shortning of mens lives ? Or that that can be perpetual , which is always changing and fleeting ? VI. The Elements conspire to the destruction of the World. Another Argument to prove the Dissolution of the World , may be fetched from those particular changes which antidate the total destruction of the World , and divers ways conspire to the Ruin thereof : What vast desolations hath not the Fire caused in the World ? How many Countries hath not the Sun , whom they call the Parent of Life , and the Soul of the World , laid waste and barren ? How often hath Water been destructive to the World ? How many Deluges have spoiled it , and renduced it to little better than its primaeval Chaos ? And for us that are yet alive , tho' we may hope to live still longer ; yet Reason , if we will not stop our Ears against her , doth assure us that Death follows us at the Heels , and will e're long trip us into our Graves . And tho' we never saw the Total Ruin of the World , or do not perceive any certain passages of its end , yet we have reason to conjecture it not to be far off , since we find it sick of the same Diseases , Old Age and other Infirmities , which have led so many of her Off-spring to death . CHAP. IV. Of the Generation , and Corruption of Things . I. How Fire becomes generated out of Wood. NOthing is more common with us , than the Generation of Fire out of Wood , by which means a Fluid and Subtil Body is produced from one that is Thick and Hard. This Generation of Fire out of Wood , is not by the Production of any New form , as the Peripateticks hold , but from the alone disposition of the parts ; their situation and other modifications which constitute the form of every Body . For nothing of the substance of the Wood is lost , when it burns , and is changed into Flame and Coals , only the connexion of the parts becomes changed , and another mode of Existence is acquired : When therefore , at any time , Wood is changed by Fire into Fire , no new Being ariseth , that was not before ; but the old Being or Body is so changed in its modes , as that it seems to be a quite different thing . For there is no other change made in Generation , save only that which is Local , whereby things are so altered , as to appear as other things to our Senses . II. The generation of a Chicken . This change of the Disposition of Parts is the cause of the Generation of a Chicken ; for we need not make any difficulty to acknowledge , that the first Rudiment of the Chicken , grows in the Egg after the same manner , as the Chickens do that are already hatched , viz. that all the Fibres , whether straight or crooked , whereof their Organs do consist , become dilated by the addition of some parts of matter , which joining themselves successively one to another , make the Pullet to grow by little and little , and cause the parts of it to appear one after another . III. VVhether Salt be generated out of VVood , or any other matter . Salt is generated out of Burnt Wood , as Chymists well know , who in their distillations do separate Mercury , Sulphur and Salt from Bodies ; the parts of which last Body , mingle with the water , and become incorporated with it . It is improperly that the word of Generation is attributed to these kind of Extractions ; forasmuch as in them , there happens no adaption of parts , as to Figure , Quantity and Motion ; which is necessary to the true Nature of Generation , but only a separation of Parts . For the Particles of Salt being very small and slender , are easily overwhelmed by the parts of the wood , which do never prick the Tongue , nor become savoury , except they be separated from the grosser parts thereof by Fire . It is manifest , that an ounce of Silver may be so throughly mingled with a great mass of Gold , that there shall be never a part of the Gold , which hath not some Silver joined with it : Neither will any sound Philosopher affirm , that Silver is generated , when it is separated from Gold , by the means of Aqua-fortis ; but only that those particles which before were mixed with the Gold , are now separated from it , and set at liberty . Salt therefore , whilst it continues mingled with the Wood , retains its own Nature , tho' it cannot be perceived by the Senses , nor exert its force ; and that because it is covered over with innumerable particles of Wood , and because the points of it are blunted and broken by its being involved in other Bodies . IV. How Metals are dissolved by Vapour only . Metals are sometimes dissolved by a vapor only , as is common amongst the Chymists to dissolve Gold and other hard Bodies by External Heat , as in Hot Water , by the Balneum Mariae ; or by a Balneum Roris , that is , the steam only of Hot Water . This is performed , when the steam passing through the Pores of the Vessel , and entring the Pores of the Gold , doth dissolve the weaving of its parts . For tho' that Heat be slow , yet because it is of long continuance , it hath the same effect as a drop of water , which by its perpetual falling , hollows a Stone , and penetrates to the inmost parts of it . Hence it is that Chymists having experienced the virtue of this continual heat , do by means thereof promise us wonderful Fermentations , and hope to obtain their Elixir , which changeth inferiour Metals into Gold or Silver . V. How Liquid Bodies corrupt those that are Hard. Liquid Bodies often corrupt hard Bodies , so water doth corrupt Sugar and Salt ▪ for a pound of Sugar , being cast into a large Vessel of water , doth disppear in a short time . Forasmuch as the insensible parts of Liquors are in continual agitation , it must not seem strange to us , that the parts of the water , do so shake the parts of hard Bodies , about which they move continually , so as to make them leave their places . Thus we seee that the Parts of Sugar and Salt , do vanish in a short time , and are so scattered and dispersed through all the parts of water , that there is not one which hath not its share of it . VI. VVhy Glass is not subject to Corruption . Some Bodies are altogether exempt from Corruption , as Glass , which cannot be destroyed by the utmost violence of the Fire . The Reason is , because every corruption of Bodies proceeds from strange particles , intruding themselves into their Pores ; and by this means altering and destroying , the Texture , Connexion and Order of their Parts . And therefore those Bodies that have more subtil and strait pores , are for the most part more durable , and less subject to corruption . And it is for this Reason that Glass is incorruptible ; for tho' whilst it is red hot in the Fire , many particles do infinuate themselves into the Pores of it , and do dilate them ; yet do they not enter into all the Pores thereof ; so as that the least particles of Air , or Water , which do more closely cleave to those , of the Earth , can wholly be separated from them , and consequently Exhale . VII . Gold and Quicksilver are the most Incorruptible of all other Metals . And it is for the same Reason , that Gold and Quicksilver are the most incorruptible of all Metals , because they have the most narrow pores of any other ; as may be demonstrated by their Ponderosity . Wherefore also their parts cannot without great difficulty be separated from each other , by the Art of Chymistry ; so as that the Form of Gold and Quicksilver be utterly destroyed , or that the Gold be reduced into its first Nature . The same also may be said of Talk , for the reduction of which into a watry Substance or Oyl , many Chymists have laboured in vain . VIII . A Rotten Apple corrupts many that are Sound . A Rotten Apple , if it be put to a sound one , doth corrupt it ; so that frequently it happens , that many sound ones are spoiled by one rotten one . Which effect proceeds from the steam which flows from the rotten Apple ; which penetrating into the sound one , and agitated by the subtil matter that is in it , doth dispose the parts thereof in the same manner as they are disposed in the Rotten Apple . In like manner one Apple laid uppon another , promotes Ripeness of each other : And therefore those that intend to make Cyder of their Apples , lay them up in heaps together , to make them ripen the sooner . IX . How Worms are generated in Vinegar . Worms commonly breed in Vinegar , when it begins to be weakned and putrifie ; which are very small and long , and like little Serpents swim upon it . Forasmuch as in every Corruption , the Connexion of the Parts is dissolved , by reason of the evaporating of the Sulphureous Parts , together with the dissolved Saline Particles , it happens that some of them breaking forth from the compound , do unite together in some near part , and there constitute these little Animals . After the same manner as Mites are bred in Cheese , and like Insects in the Grain and Fruits of the Earth ; since it cannot well be questioned , but that soft Bodies are subject to perpetual intestine agitations , by which they are driven into Confusion . X. Animals are produced by other Animals . In the mean time it seems most certain , that all Animals are the Products of certain Seeds ; so as not so much as a VVorm can be produced from the Tumultuary concourse of Atoms , but from a Seed , in which is lodged a formative Virtue : And there fore we must conclude , that the very least Animals are the effect of others ; tho' , it may be , it is not necessary that the Eggs whence they proceed , be produced from other Animals of the same kind . Which seems probable as to those VVorms which breed in Galls and other Fruits . XI . Spices preserve Bodies from Putrefaction . There is a Virtue found in Spices , whereby they preserve Bodies from Putrefaction : Hence proceeds the custom of Embalming Dead Bodies with Spices . The Reason is , because Spices consist of those parts , which can easily be agitated by the subtil matter ; so that by exciting a new fermentation in Bodies , they put the matter , which before wa● at rest , into motion also , and put a stop to many of their out flowing particles . Thus Flowers and Fruits are preserved by means of Sugar ; forasmuch as by its clamminess , it retains their thin and volatil particles from flying away ; and besides affords them a pleasant Taste . XII . How Corn comes to be changed into Bread , and afterward into Blood. The Grains of VVheat , being ground in a Mill or otherwise , is turned into Flower , which being mingled with water is kneaded into Dough , and afterwards being baked in the Oven , becomes Bread ; which after it hath been chewed in the Mouth , and let down into the Stomach , is there by means of an Acid penetrating moisture turned into Chyle , and afterwards into Blood. The Cause of which several Mutations is only to be attributed to Motion , by means whereof almost all alterations , that happen to Bodies are effected , and all that diversity is produced , which we see in Heaven and Earth . For we are not to imagin , that any new thing is acquired in the Generation of Things , nor any thing lost in their Corruption , that was before in them , besides only a new Connexion of Parts , and a different Mode of Existence . So that when the Grains of Corn are changed into Flower , afterwards into Bread , and lastly into Chyle and Blood ; there is nothing in all this progress of changes , but local motion ; tho' the Species it self may seem to be changed , as Ovid appositly describes the same in the XV. Book of his Metamorph. All alter , nothing finally decays ; Hither and thither still the Spirit strays : There 's nothing permanent , all ebb and flow ; Each Image form'd , doth wander to and fro : VVhat was before , is not ; what was not , is ; All in a moment change from that to this . But where there is no such change , either of the insensible or sensible parts , there no alteration can be brought about ; as appears in Gold , Quicksilver , Talk , and other Subjects , whose parts are so closely joined , as that they cannot by any force be separated ; or so altered , but that they may return to their former appearance again . XIII . How Vapours are said to turn to VVater . Nothing is more common with Philosophers , than that VVater is changed into Vapours , and Vapours again condensed into VVater . I know that the Peripateticks do not hold this change to be mutual , since they suppose in every Generation a new substantial form is acquired , and that the old one perisheth ; and therefore ARISTOTLE expresseth himself thus , in his 2 d Book of Generation , the last Chapter : VVhen Air is turned into VVater , and VVater into Air , that Air will be the same Kind , but not the same in Number . But this doth not seem probable at all , seeing that in these changes there may be restitution of the very same parts . For as an Engine or Machin , that consists of 100 or 200 parts , when it is taken to pl●ces , can by a Skilful Artist be put together again such as it was before : So in like manner may water return again to its former subsistence and appearance , by the coming together again of the particles , which had been dissolved into vapour ? Who will say that a drop of water , which riseth up in a vapour to the head of the Alembick , and there is turned into water again , is not numerically the same ; seeing that all its parts may be again united , and take up the same Figure and place they had before . All the difference therefore that there is betwixt water and vapour , depends only on the motion and figure of its parts , because the parts of vapour are more agitated , and are at a greater distance from each other , than the parts of water , whose motion is less , and which takes up a lesser space . XIV . The change of Bodies depends on the Transposition of their Parts . Thus we see that VVood , by a multifarious transposition of its parts is changed into Flame and Soot , and lastly into Ashes . Thus Vegetables , when they are putrified , turn into dust , or a slimy substance . Neither can we imagin any other way whereby Mites are bread in Cheeses , but that Flies or other Insects do lay their Eggs in them , which afterwards become dilated , and undergo various changes as to their figure , situation , &c. CHAP. V. Of the Heaven , or most subtil Aether . I. Why the Heaven is a most loose Body . THAT the Heaven is a most loose or rarefied Body , and consists of many most subtil parts , may be demonstrated from the Light of the Sun and the fixt Stars , which through the same is transmitted with unconceivable swiftness to an incredible distance . To which may be added the perpetual action of these Stars , and the excitation of Heat in these inferiour parts , by means whereof , tho' these particles had not been most subtil before , yet must they have necessarily become such , especially those which are higher , and nearer to the Lucid Bodies , as being more particularly the subjects of their Activity . II. What we are to understand by the word Heaven . For by the word Heaven , we are to understand nothing else but that immense Extension of the matter of the First and Second Element , which reacheth from the Star that is placed in the center of a Vortex , to the circumference of it . Thus the Vortex wherein we are , contains all that space in which the 7 Planets are whirl'd round ; the middle part whereof is most swiftly snatched about , and all the other parts still slower , as they are at a farther distance from the Center . III. What is the Cause of the Changes that are observed in the Planet Venus . It is evident that the Heavenly Bodies are no less changeable , than those that are upon the Earth , and that they alter their Figures and Colours ; as appears from those Phases or Changes that are observed in the Planet Venus , which differ but little from those of the Moon , and are much alike represented to the Eye . The Cause of these Changes is the motion of that Planet , which swiming in the fluid Heaven , makes its circumvolution about the Sun , and produceth new changes , according as it is carried above , below or sideways of the Sun. For seeing that the Planets shine with a borrowed Light they receive from the Sun ; they likewise represent several Faces to us , suitable to their position , with respect to the Sun , as whether in Conjunction with it , Opposition to it , or any other Aspect . IV. Whence it is that the Planet Venus appears sometimes greater , and at othertimes less . It is notorious , that Venus doth at some times appear 40 times bigger than at other times ; and that when she is biggest , she appears Crescent-wise , and Round when she is least . Which proves that Venus , when she appears round , is in her highest station ; and in her lowest , when she is seen like a Crescent . Which appearances do sufficiently evince , that Venus , as well as Mercury do not run round the Earth , but are whirld about the Sun ; and consequently that our Earth is placed between Venus and Mars . V. The Come's pass from one Heaven into another The Comets run through several Regions of Heaven , and are moved so swiftly , that within a few days they quite vanish from our Eyes . For they are found to pass through vast spaces beyond the Sun , and to run from one Heaven into another . This Motion of the Comets is a strong and convincing proof of the fluidity of the Heavens , which we have demonstrated in our Institution of Philosophy , without which there could be no passage of Bodies through them . For how could the Stars or Comets move from one place to another , if they were surrounded with a Solid Body ? The Comets therefore are swiftly moved through the Heavenly Spaces , because the Heaven is like our Air , tho' much more pure , which with the greatest ease yields to Solid Bodies , and makes way for them . But of the Comets more hereafter . VI. The Bodies in Heaven , that are once moved , do always continue their Course The Bodies that are moved in the Heaven , do pass every way without stop , and move with such a force , that they run through all spaces with an equal swiftness ; the contrary to which we find in our Air ; where the Birds cannot fly without wearying themselves , because of the opposition it makes to their motion . GASSENDUS , to avoid this difficulty , supposed empty spaces in the Heavens , to which he attributes the swift motion of the Stars , as supposing them void of all Matter , excepting only the Beams of the Sun and Stars which pass through them . He also supposeth that the Stars , how bulky soever they may be , have no ponderosity , and consequently that they do not stand in need of any Medium to support them ; as Birds stand in need of the Air , and Fishes of the Water to bear them up . But forasmuch as we have already confuted this Opinion of Gassendus , and proved that there can be no Vacuity in the World ; I shall only add one word , that in case a Vacuum be once admitted , there can no longer be any distance between those Bodies that are most remote from one another : Which is the same , as if one should say , that there is extended space in the World without extension ; and that there is that which is high and deep , without Heighth and Depth . The Reason therefore why some Stars do freely wander through the Heavens , and meet with no stop in their Course in the Heavens , is not because the Fluid Body , through which they are carried , doth not hinder their motion ; since it is a contradiction , that there should be any such Body in Nature ; but because the parts of this Liquid Substance , which are variously moved , without tending one way more than another , are determined by the subtil matter ; and complying with the motion thereof , are carried towards a certain Region of the Heavens . Not much unlike that which we observe in the other Scale of a Ballance ; which with the least impulse from without , is either raised or deprest . VII . Why the Heaven doth not hinder the motion of Bodies . For as the Particles of the Heavenly Matter are most subtil , so are they most apt to admit motion , or any determination of it : Partly because most of them are of a Spherical Figure ; and partly because the Motion , and the Resistance , which Bodies meet with in their motion , are proportionable to their Bulk : And therefore a weaker cause , and which is not endued with the greatest force , may easily suffice , either to push forwards these most subtil particles , or to determine their motion . VIII . Why the Heaven , when it is clear , appears of a Blue Colour . The Heaven , when it is free from Clouds , appears of a Blue Colour ; which Colour also is seen at the rising of the Sun , if before Day-break it was full spangled with Stars : For then , as well in the place where they shine , as where they become extinct by the Light of the Sun , every way this Blue Colour doth appear . This Adventitious Colour , is not so much to be attributed to the Heavenly Body it self , as to the Vapours and Exhalations which hang over us . For it is certain , that the Heaven fends forth no Light , and that indeed it would appear very dark to us , if there were not other intervening Bodies , which did reflect some Beams to us , or which sent back to our Eyes those Globuli of the 2 d Element , which the Sun or Stars have dasht against them . For since these Vapours are very loose , and are very much dilated , the Heavenly Globuli do not meet with particles enough , so as to be with equal swiftness moved round their own Centers , as in a straight Line ; and this is the Reason why the Heaven appears of a Blue Colour , as before hath been said . And it is for the same reason also , that the water of the Sea , where it is most clear and deep , shews of a Blueish , or Sea-green Colour . IX . Why the Heaven cannot be really of a Blue Colour But that the Heaven is not indeed ting'd with a Blue Colour , is evident from hence , because if it were so , all the Stars which we see through it , would appear to us of the same colour , as those things which are beheld through a colour'd Glass , seem to us of the same Colour as the Glass is . X. How it comes to pass that some new Stars do arise in the Heavens . Many Stars do appear in the Heavens , which were never seen there before ; according to what Astronomers tell us of the Star Mero●us or Electra ; which having appeared in the Heaven a long time before the Trojan War ▪ did afterwards vanish by degrees . TYCHO BRAHE ulso hath observed another , which shone for many years together in the Heaven , and afterwards disappeared . The Cause of these and other New Stars , is by Astronomers attributed to the Corruptibility of the Heavens . For whatsoever is generated in another , doth borrow the matter whereof it consists from the same , and takes its Rise from the Dissolution thereof . There being no greater Argument of the Corruptibility of any thing , than that many things are generated and corr●pted in it . But no● more particularly , there New Sta●s do arise , o● appear , when at any time the most subtil matter ▪ collected in the Center of its Vortex , having gispe●●ed its Spots , doth press the Globuli of the 2 d Element ▪ as before : Or when the matter of the fir●● Element , flowing in great abundance from a neighbouring vortex to the obscured Star , doth diffuse it self over the Spots that cover'd it , whereupon it shines forth again . CHAP. VI. Of the Sun. I. Why the Sun appears to move from East to West . THE Sun is observed daily to describe a Circle Parallel to the Aequator , from East to West . In order to the explication of which appearance , we are to suppose some things ●●t down in our Institution of Philosophy . 1 st . That the Heavenly Matter which surrounds the Sun , doth whirl continually round about it . 2 dly . That the Vortex of the Sun carries the Elementary Matter along with it . 3 dly . That the Circle which the Elementary Matter doth describe , is Excentrical . 4 thly . That the Axis of the said Circle is always Parallel to it self . 5 thly . That the said Axis inclines on the Plain of the Excentrick Circle , which the Earth describes . 6 thly . That the Elementary Mass doth turn round about its Center , at the same time that it whirls about the Sun. These things thus supposed , It is manifest that the Sun , and whatever else appears in the Heaven , must appear to us , as daily describing a Circle Parallel to the Aequator . For seeing that the Earth is turned about the Sun , the Sun also must appear to take the same course , and to describe a Circle ; which would be the same with the Aequator , in case the Axis of the Earth were Parallel to the Plain of the Excentrical Circle , which it describes about the Sun , but which necessarily differs from it , and which it intersects , by withdrawing from it 23 degrees and an half ; because the Axis of the Earth is just so much inclined upon the Plain of its Excentrical Center . The Earth therefore roling about its own Center , from West to East , within the space of 24 hours , the Sun , and whatsoever else we suppose to be immoveable in the World , must needs appear as if it were carried by a contrary motion from East to West . II. Why the Sun appears greater in some Signs than in others . The Sun appears greater to us , when in the Southern part of Heaven , than in the Northern . Because then the Earth is in its Perigaeum , or in that part of its Excentrical Center which is nearest to the Earth : And besides , the Sun must of necessity appear more days under the Southern Signs , than under the Northern ; because the Aequator cuts the Excentrick of the Earth into 2 unequal parts ; and that the Earth describes the greater half from the Day wherein the Sun doth appear to us under the beginning of the Rain , ●ill the day that he enters the Balance ; which is the reason that it makes more diurnal Revolutions in this half , than in the other . III. How the Sun is said to be hot . The chiefest and most common effect of the Sun , is Heat ; which it every way transmits to us . For wheresoever the Sun-beams come , they bring Heat along with them , and cause those effects , which we see the Flame daily produceth . And therefore PARMENIDES and HERACLITUS , as Stobaeus tells us , did believe the Heaven to be Fire , and that the Stars were so many flaming Torches placed in it ; by which the Light is conveyed to us , and from whence , as so many Fountains , the vigour and life of all things here below do proceed . Book . 2. Part. 3. Chap. ● G. 〈…〉 To the Right Honourable Edward Lord Radclyffe , Son and heyre of the Right Honourable Francis Earle of Darwentwater , Viscount Radclyffe & Langley , and Baron of Tindale &c. a. This Plate is humbly Dedicated , by Richard Blome . They who follow ARISTOTLE , attribute this effect to the virtue of the Sun , and not to its substance , which they will not allow to be endued with a Fiery Nature , and that it is only virtually hot ; but not to the Touch. Like Ginger , or Spirit of Wine , which excite a heat in the Mouth and Stomach ; tho' it cannot be felt with the Hand . But how doth it appear to these Philosophers , that the Sun is only Eminently hot , and not Actually ? Were they ever so near it , as to touch it with their Hand ? Had not they much better attribute a Natural and Real heat to it , since they find it in all things to be like Fire ? There is nothing here on Earth that is more moveable than Flame , which by its great Activity and Mobility , dissolves all Bodies . Have not the Astronomers observ'd as much , who , with the assistance of an Helioscope , have seen the Sun in appearance of Gold boyling in a Furnace ; or like a Sea of Fire , with its waves rouling through and over one another ? And what else is Formal Heat , but the various Motion of the Parts of a Body , whilst they are diversly agitated and carried against one another ? Now that this happens in the Sun no Man will deny , but he who is ignorant of the Nature of it . And as to the Instance they alledge of Ginger and Spirit of Wine , that makes more for us , than for them ; seeing that they are not perceived to be hot , till the subtil Matter hath excited a motion in their parts , and separated them from each other . But the Particles of the Sun are in perpetual motion ; and tho' they do not make any Excursions beyond the Bounds wherein they are contained ; yet do they vary their situation , and are carried divers ways . IV. Why the Sun , at his Rising and Setting , doth commonly appear Red. The Sun commonly appears Red at his rising or setting . Because the Light at that time passeth through abundance of Nitrous Vapours , which make it subject to Refractions , much like those which a Prism is the cause of ; and we shall be easily persuaded to be of this Opinion , if we will take the pains to observe , that when we distil Saltpeter , in order to the making of Aqua-fortis , the Vapours which arise and circulate in the Recipient , do make a Candle , held on the other side of the Recipient , and viewed through those Steams , to appear very Red. And by the same Reason it is , that the Sun appears red to us , when we look upon it through a Glass , upon which we have put some Ink or Soot . V. Why the Sun is of a Spherical figure . The Sun appears round to the Eye , especially if it be assisted with a good Telescope , whose Concave-glass is tinged with some pale Colour , especially a Violet ; for then it doth not appear Round like a Dish , but Spherical . The Reason of this is , because the Matter of the first Element , which constitutes the Body of the Sun , doth endeavour every way to withdraw from its Center , and by an equal pressure pusheth forward the surrounding matter . For it is a Law of Nature , that Bodies which are circularly moved , withdraw , as much as they can , from the Center of the Circle they describe , and consequently leave those Round spaces , which are afterwards filled with the Subtil matter of the first Element . And forasmuch also as the Vortex , wherein the Sun is formed , is on every side pressed by the encompassing Vortexes ; and so is hindred from prosecuting its motion in a strait line ; therefore it must of necessity continue Round , and never attain any other figure . As appears in a Glass , which is formed of a Round figure , whilst the Air that is blown into it through a Pipe , doth equally press the parts of the Glass one way as much as another . VI. Why the Sun sometimes appears of an Elliptical figure . The Sun seems sometimes to be of an Elliptical figure , viz. about his setting . The Reason whereof is to be fetch'd from the Refraction of its Rays : For the Sun-beams are refracted in a thick Vapour about the Horizon , at a greater distance to the Right and Left hand , than upwards and downwards , as those that have skill in Dioptricks demonstrate , which it will be sufficient to have only mention'd here . For who doth not know that a Circle is changed into an Elliptical or Oval figure , by Reflexion , as in a a Cylindrical Glass , and by Projection upon a Plain obliquely oppos'd ; and also by Refraction . VII . The Sun always appears of the same bigness and figure . The Astronomers never observed any change in the Sun , but own it to consist of the same Bulk , and to enjoy the same force and virtue , as it had from the beginning . Which some alledge , as an Argument to prove , that it cannot be of a fiery Nature , because Fire always stands in need of Fewel to maintain it , upon the withdrawing whereof it becomes extinguish'd . Tho' the Sun be consider'd as a flame , and seems obnoxious to the same defects , as a Flame is ; yet cannot we conclude from thence , that it stands in need of fewel , as our fire doth . For , according to the Laws of Nature , Every Body always continues in the same state , till it be forced by a foreign Body . Whence it is evident , that Fire , being of a fluid and moveable Nature , is easily destroy'd and choaked by the Matter that doth surround it , and that consequently it stands in need of continual Fewel to support it , that as fast as any of its Matter vanisheth , other may be restored in the stead of it . But the case is not the same with the Sun , whose Ruin is not conspired by the parts of Heaven that are about it . But yet it doth stand in need of some aliment or fewel , which is no other than the same Matter of the first Element , which as it runs out by the Ecliptick , or those places which are most remote from the Poles of the Sun ; so new Matter enters again to the Sun , by the Poles , and recruits the defect of that which is gone away . Wherefore as a River is said ever to continue the same , as long as it is recruited by the continual succession of new Parts of water : So likewise the Sun , by this entrance of New matter , doth continue the same , and keeps the same bulk and figure . VIII . Why the Sun is felt more hot in the Torrid Zone , than elsewhere . Tho' the Sun causeth different Seasons over the whole World , and by his presence produceth Heat every where : Yet we find the contrary in the Torrid Zone ; where there is nothing else , but continual extream Heat , even when the Sun is most remote from it ; whereas it grows weaker , when the Sun is perpendicular to it : So that they who live between the Aequinoctial and the Tropicks , do begin their Summer about Christmass , and their Winter about the Feast of St. John Baptist : This difference of Seasons proceeds from the Sun it self , which hovering directly over the Heads of the Inhabitants of the Torrid Zone , doth raise up many Vapours to that height , that by their meeting with the cold Air , they are immediately turned into water , and consequently cause almost continual Rains , which do very much cool and refresh the Air : But when the Sun is no longer perpendicular to them , the Rain ceaseth , and the Air being deprived of its coolness , grows so hot , as scarcely is tolerable . IX . Why the Sun doth blacken some Men , and not the Fire . In some Parts of the World Men are colour'd black , as those who live in Guinea and Aethiopia : Which effect the Fire doth not produce , tho' it exert a greater force upon Bodies , than the Sun. And hence it is that those who make Glass , are rather of a pale , than a black Colour . The Reason whereof is , because Fire exerts its Force most upon the Blood and the Spirits , causing them to exhale ; which makes Men that labour much in the Fire to be of a pale and somewhat tawny Complexion : Whereas the more benign heat of the Sun only draws the Blood towards the outward parts of the Body , and does rather concoct it there , than cause it to evaporate . And therefore it is that the Ethiopians are indeed of a Fleshy habit of Body , but not so well and handsomly made , and generally have thick Hips , which shews that their moisture is shut up rather , than exhausted . X. Whence the Twilight , and the differences thereof do proceed . In the Morning before the Sun riseth , and in the Evening after its setting , we have the Twilights , which in some parts of the Earth are perpetual , and exclude the Nights Dominion . The Cause of these Twilights is , when the Sun-beams falling obliquely upon the surface of the Air and Atmosphere , become refracted towards the Earth , and entring the same , are reflected back again by the particles of Air and Vapour they meet with . These Twilights begin and end , when the Sun is 18 Degrees distant from the Horizon ; for if it sink lower , it makes Night . Whence it is evident , that in those Countries where the Sun in Summer time doth not sink 18 Degrees below the Horizon , there they enjoy a continual Twilight , and have no perfect Night . XI . Why the Sun appears sometimes , to be in the place where it is not . This Refraction of the Sun-beams , is the cause that the Stars , which are near to the Horizon , do seem to make a stop there , and to set , as it were , with some delay or reluctancy ; and accordingly towards Evening , reach the Lines that point out the Hours on Sun-Dials more slowly , and so make the Hours longer . As also that sometimes the Sun appears together with the Moon , at the time of its Eclipse , tho' it be necessary for the producing of an Eclipse , that the Moon be interpos'd between the Earth and the Sun. And that the Hollanders in Nova Zembla , after a continual Night of 3 Months , see the Sun above their Horizon , and at the very Meridian , 15 Days sooner than according to the position of the Sphere they ought to find him there . The Reason whereof is , because the Ray which is betwixt the Eye and that Point of the Atmosphere , wherein the Refraction is performed , is not terminated in the Sun , but somewhat above it : Which is the true cause , why the Sun appears higher than indeed it is . Thus the Virgins Ear of Corn , a very refulgent Star , appears to us to rise , when it is yet ●2 Minutes under our Horizon ; which we conclude from hence , because it seems to rise when the Lions Tail is 34 Degrees and 30 Minutes high , and in the same quarter in which that Star of the Lion then is . But the Lions Tail , and the Spike of the Virgin , are distant from each other 35 Degrees and 2 Minutes . XII . Why the Eclipse of the Sun always begins at the West side , and that of the Moon on the East . The Eclipse of the Sun always begins from the West , but that of the Moon from the East . The Reason is , because the Moon , by her motion towards the Earth , doth with her Eastern part enter upon the Western part of the Earths shadow , as well as of the Sun. And therefore it is that she , in her Eastern part , begins to be Eclipsed by the Western part of the Shadow : and the Sun on the contrary , on its Western part , because of the Eastern shadow of the Moon . And forasmuch as that which last suffers the Eclipse , doth last recover its Light , it always happens that the Eclipse of the Moon ends towards the West , and that of the Sun to the East . XIII . Why the Heat of the Sun is most vehement after the Summer Solstice . It is observed , that the Heat is not so great at the Solstice , when the Sun darts his Rays more perpendicularly down upon us ; as some days after , when the Sun begins to decline from our Hemisphere : The Reason is , because the Sun , in its approach to our Horizon , doth every day heat the Air with more direct and perpendicular Rays , and makes a longer stay above our Horizon , until the time of the Solstice . And since these direct Rays , together with this longer stay of the Sun , doth sensibly continue for some days ; and that continually like degrees of Heat are still added to the Heat that is already acquired , it cannot be otherwise , but that the Heat by this means must be much increased . So that the Heat cannot decrease till the Sun-beams do very sensibly deflect from their former Directness , and till the stay of the Sun above our Horizon , be considerably shorter . XIV . Why the Sun at his Rising and Setting , appears greater , than in the Meridian . The Sun , when it is nearest to the Horizon , appears greater , than when it is farther from it , towards the Meridian ; because there it is conceived to be highest . The Reason of this Deception must be fetch'd from the Refraction of the Rays ( according to the Opinion of almost all Philosophers ) in the Dewy Vapour , which inflexion of the Rays doth dilate the visive Angle , and thereby increase the Bulk of the Object . For seeing that the Vapour is but lifted up a little way above the Horizon , on the Plain whereof , notwithstanding it is far and wide extended , it so happens that more of the Solar Beams do meet on this and that side , than upwards , and consequently make the longer Diameter of the Sun , which is then seen to be parallel to the Plain of the Equator . But the Sun , when it is about the Meridian and Vertical to us , doth appear higher , because the Rays which proceed from the Sun , passing through Bodies of different Rarity or loosness of the Parts , viz. the Aether and the Air , are refracted towards a Perpendicular , and therefore reach the Eye through a great Refraction . And thus it comes to pass , that the Eye apprehends the Sun to be much higher than indeed it is : For the Eye , or rather the Mind of Man , doth measure the Greatness of the Object according to the Right Line , which last of all reacheth his Retina , or Net-like-Coat of his Eye . it happens also that the Ray which is understood to be continued from the Point of the Atmosphere , whence the Refraction is made to the Eye , is not terminated at the Sun ; but doth reach somewhat above him ; where the Mind takes occasion to apprehend him higher than indeed he is . It may also be said , that the Sun being near the Horizon , the Eye doth wink less , because of those Vapours which dull the Sun-beams , and therefore suffer the Apple of the Eye to be more dilated , than when the Sun being up on high , near the Meridian , there are few or no Vapours interposed between him and our Sight ; by which means , when the Apple of our Eye is fixt upon him , it becomes the more contracted . Now it is evident , that the Image introduced through the more dilated Apple of the Eye , doth produce a larger appearance of the Object , than when it enters through a contracted Apple of the Eye . Because probably in the former case it doth strike more of those little Nerves , whereof the Organ consists . Thus we find that the Moon appears less in the Day , than at Night : For in the Day-time the Hole of the Uvea is more narrow , and therefore the Rays that enter through it being nearer to the Axis , are not so much dispersed . XV. The Sun , about the time of its Rising and Setting , seems to tremble The Sun , at his Rising and Setting , seems to tremble , to whirl about its own Axis , and to leap , as it were , according to that of CLAUDIAN , in his 1 st Book of the Praises of Stilico : Then did Bright Titan's Horses lead a dance To th' following Stars . And hence it is , that that Story arose amongst the Common People , of the Sun 's Dancing on Easter-day in the Morning ; as believing , that all Created things do testifie their Joy on that Day , because of our Saviours Resurrection , and that the Sun in particular testifies the same by his Dancing at that time . Some there are , that attribute this effect to the Sun 's turning round , as if in so doing the Brim or Edges of it were really shaken , and so with a kind of Palpitation whirl'd round about his Axis : But this is found to be false , because the motion of the Sun about its own Center is insensible ; which Rotation therefore cannot be perceived , but after many repeated Observations . This seeming Trembling therefore is caused , by those Vapours that interpose between the Sun and our Eye , which being agitated by its heat , do represent a kind of Trembling motion ; and therefore the Beams that pass through them , do shake the Retina in such a manner , that the Sun appears to the Eye to leap and skip . In the very same manner as the Sun is seen to tremble on a Paper , or against a Wall , when the Smoak of a Candle doth intercept its Rays ; or like as a Stone , that rests at the bottom of the River , seems to tremble , because of the Stream or Current of Water that runs over it . XVI . Why Redness in the Sky , at the Sun rising , i● a sign of Rain ; and at his Setting , of Fair-weather . If the Heaven appears Red at Sun-rising , it doth presage Wind or Rain ; whereas at Sun-set , the same Redness doth promise Fair-weather . Redness , appearing in the Morning , fore-bodes Wind or Rain ; because this is a Sign , that seeing there are but a few Clouds in the East , the Sun may elevate many Vapours before Noon , and that those Mists which will produce the same , are already Rising . Whereas on the contrary , this Redness appearing in the Evening , portends Fair-weather ; because this shews , that there are none , or very few Clouds gather'd in the West ; and consequently , that Eastern-winds have the predominance , and that the Mists will be driven downwards during the Night-season . CHAP. VII . Of the Fixed Stars . I. How the Stars are moved from West to East . THe Fixed Stars , besides their motion from East to West in 24 Hours , have another from West to East , within Circles Parallel to the Ecliptick ; according to which Circle they move only 2 Degrees in the space of 200 Years , and finish the whole Round in 36000 Years . The Diurnal , or Daily Motion of the Stars , is evidently deduc'd from the Circumrotation of the Earth upon its own Axis ; and as to the other Motion , which they call Periodical , it will be sufficient to say , that the Earth , when it wheels every year about the Sun , doth not so exactly observe its Parallelism ; but that it doth , as it were , reel a little from it , by which means it comes to pass , that its Poles do answer to different parts of the Firmament , and that consequently its Poles , during the space of many Thousand years , describes a Circle from East to West . This being suppos'd , forasmuch as we conceive the Aequator of the Earth to correspond to different parts of the Heavens , it follows , that the Aequator of the Earth is changed after the same manner , and divides the Ecliptical at various Points , whose sequel is from East to West . And because the Longitude of the Fixt Stars , is taken from the common Section of the Aequator and the Ecliptick , it is necessary that the Stars , how fixt and immoveable soever they be , must every Hundred years appear , to have moved somewhat from the West to the East . II. The motion of the Fixt Stars , is irregular . Wherefore it is no wonder , if the motion of the Stars be irregular , and that the Astronomers , who followed HIPPARCHUS , discover'd , that their motion from West to East was so much increased , that the Longitude of every Star was augmented to 28 Degrees , beyond what it was observed to be at the time of our Saviour . Because probably this Reeling motion of the Earth , may have been more manifest in one Age , than in another . III. The Fixt Stars shine with a Light of their own . The Fixt Stars do twinkle , and dart their Beams from them , as the Sun doth , who shines with a Light of his own . The Reason whereof is , because the Fixt Stars are as so many Suns in their proper Vortexes , consisting of a most fluid Matter , which with the greatest swiftness is whirled about its own Center : Whence it is that they always press that Matter , which is continuously extended from the Stars to our Eyes , and thereby produce the Sense of Light. For if the Sun were placed amongst the Fixt Stars , he would not appear greater to us , than the very least of them : And on the other hand , if the Little Dog-Star , by Example , which is accounted the least of all the Fixt Stars , should be in the place of the Sun , there is no question to be made , but that he would be equal to the Sun , both in Bigness and Light. From whence we may gather , that the Sun hath not strength or force enough to lend his Light to the Stars , and that therefore we must conclude , that they must shine with their own proper Light , without borrowing it from any other Body : Tho' PLINY and METRODORUS were so much taken with the admiration of the Sun , that they thought him sufficient to illustrate the whole World. IV. Why the fixt Stars are conspicuous to us , and not the Comets , when they are out of our Heaven . Hence it is , that the Light of the Fixt Stars reacheth our Eyes , and not that of Comets , except only when they are within our Heaven ; because the fixt Stars having a Light of their own , do dart the same much more strongly , than the Comets can , who only reflect the Light to us , which they have borrowed from the Sun. And therefore cannot be seen by us , when they are too remote from our Heaven : For it is well known , that the greater the distance of any Body is , so much the less is the Angle under which it is seen by us . V. Why Stars are seen by us in those places where they are not . There are many Stars which are not seen by us in their Right places ; yea , sometimes it happens , that one and the same Star appears in different places . This proceeds from the Vortexes of those Stars that surround our Heaven : For their surfaces having several Corners , cannot be so aptly joyned , but that the Beams which proceed from them , must suffer divers Refractions . Whence it is , that when they are viewed from the Earth , they do not appear in those places , where indeed they are ; but as if they were in those places of the surface of our Vortex , through which those Beams pass , which come from them to the Earth . And seeing that those Places , since the time that they were first observed by Astronomers , are not found to have been changed , therefore the fixt Stars are said to keep the same situation or distance from each other , and to continue in the same station . Which gave occasion to MACROBIUS to say ; Behold the 7 Stars , which never scatter themselves from each other , no more than their Neighbours the Hyades , nor quit the station they have near to the Constellation of Orion . Neither do the Great and Less Bear desert their places ; nor the Serpent , that glides between them , ever change the Ring wherewith he winds himself round about them . VI. Why the Stars are only seen by Night . The fixt Stars are not perceived by us , save in the Night ; and in the Day time are inconspicuous to us . The Light of the fixt Stars cannot be seen in the Day time , because the Rays of the Sun are of greater force , than the Rays of the fixt Stars , so as to disable them from affecting our Eyes . And therefore it is that by how much the nearer the Eye is to the Sun , the less can it perceive the Light of the fixt Stars ▪ Because their Force becomes altogether weakned by the far more vigorous heat of the Sun ; according to that Rule which always takes place in the meeting of Bodies , viz. That those things , wh●se Force exceeds that of others , they obtain their effect . Tho' sometimes it may so happen , that Stars may in the Day time be seen by us , as , according to what Historians tell us , it hapned under the Empire of COMMODUS , when the Stars appeared for a whole Day , as if they had been fixed in the Air. The cause whereof I suppose to have been , because the Sun , at that time , being cover'd with Darkness , did give forth weak or almost no Rays at all , which being not sufficient to resist the Action of the Light of the fixt Stars , they consequently appear'd visibly to men . As we see that Persons let down into a dark and deep Pit , or Well , can thence see the Stars in the Day time . VII . The fixt Stars always appear in the same situation . The fixt Stars do always appear the same to us , and never increase or diminish their Bigness . Whence it is , that the Stars which pass over our Vertical Point in the Crab , are seen the same in Capricorn . The Reason is , because the Axis , about which the Earth whirls round every Day , doth always continue unchanged . Whence it is , that that Point which is Vertical to us , when the Earth is in the Crab , is as far from that which is over our Heads , when it is in Capricorn , as the one Tropick is from the other in the Great Orb. But forasmuch as all this distance , and the whole Great Orb , is but as a Point with regard to the Heavens , therefore also the Interval , that comes between the 2 Vertical Points , is also to be esteemed no other than a Point . VIII . How New Stars come to appear in the Heavens . New Stars do now and then arise in the Heavens , which some time after do vanish again : As that which appeared in the Swan , in 1600 , much about the Bigness of one of the third Magnitude ; and that other which appeared in Serpentarius , in 1604 , which was almost of the same bigness with Venus ; whereof the one continued for many years ; but the other disappeared , after having continued its station for one Year only . The Cause of the Rise of New Stars is , as was said before , the dissolution of Spots , wherewith sometimes the Body of a Star becomes so cover'd , that by their thickness , or hardness , they hinder it from shedding any of its Rays . When therefore it so happens that a Star becomes freed from those spots , by one means or other , then immediately a New Star appears to our Eyes , which it may be had not been seen for some hundred years before . Now the dissolution of those spots happens , when the Vortex that encompasseth the spots , doth with greater force press upon its Neighbouring Vortexes , than they push upon it : For then the said Vortex enlarging its own Borders , causeth the Matter of the first Element , which flows forth from the Eclipticks of other Vortexes , to run in greater abundance towards the obscure Star , where spreading it self over the spot that covers it , and making an impression on the Heavenly Globuli , it doth by this means conveigh the Action of the Light to our Eyes . IX . How comes it to pass that Stars vanish from our sight . And on the other hand we find , that sometimes Stars which have appeared many years , afterwards disappear . Thus formerly the Astronomers counted 7 Pleiades , whereas now 6 only of them are to be seen . Book . 2. Part. 3. Chap. 8. To the Right Honourable Elizabeth Countess Dowager of Winchelsea , Viscountess Maidston , and Baroness of East-well &c. a. This Plate is humbly Dedicated by Ric : Blome . The Reason whereof is , because the spots about these Stars grow so thick and close , that they can no longer be dissipated or dispelled by the said Star , nor the Heavenly Globuli be push'd forwards . Because nothing doth more conduce to the preservation of a Vortex , and keeping it from being destroyed , than when the Star that is in the Center of it , is in a vigorous condition to push forwards the Globuli of the 2 d Element , and by that means hinders the neighbouring Vortexes from encroaching upon his Territories , and hurrying away of his Globuli . Thus the Star in Cassiopeia appeared in 1572 , and the other in the Breast of the Swan ; which being first discovered by KEPLER in 1602 , vanished in 1626 ; and after this was seen again by the Famous HEVELIUS in 1656 , of the same magnitude as it had before been observed by Kepler . About the beginning of the year 1660 , it appeared less than formerly ; and in 1661 , it disappeared again till the year 1666. Thus at the beginning of this Century , there was a Star observed in the Neck of the Whale , which presently after becoming extinct , appeared again in the year 1648 , till the Learned BULLIALDUS , had calculated the motion of it . For after a Circle of 333 days it appeared again . The same Reason must be given of that misty Star , which at sometimes is conspicuous in the Girdle of Andromeda . X. Why Stars do sometimes appear in the day-time . Stars are seen in the Day-time , either when the Sun suffers a total Eclipse , or when the Spectator beholds them from the bottom of a deep Well . For seeing that in these cases there is no reflexion of the Sun-beams , and that the Spectator is placed in nocturnal darkness ; the Apple of the Eye being by this means dilated , and the Optick Nerve free from the dazling splendor of the Sun , or at least being not comprest by it , the smallest Beams of the Stars are capable of affecting it , so as to make the Stars become sensible . XI . The Fixt Stars are sometimes changed into Comets , or Planets . The Stars are sometimes changed into Comets and Planets , and losing their own Light , only reflect that which they borrow from others . The Reason of this is deduced from what was said before . For when a Star is altogether covered with Spots , and hath lost all its force of pushing forwards the matter of the 2 d Element , it may easily be so prest upon by the neighbouring Vortexes , as to be swallowed up by one of his strong and vigorous Neighbours . And when the Vortex of the Star is thus swallowed , and the Star being wholly covered with Spots , and carried into another Vortex , it then either passeth farther , and is driven again from that Vortex , which first swallowed it , into another Vortex , and so becomes a Comet ; or because of its being less solid , doth descend lower , keeping a certain distance from the Star which possesseth the Center of that Voxtex , and thus becomes a Planet ; and continually wheeling about the said Star , doth reflect its Light ; and thus the Body which was Lucid and Fluid before , by the access of these Spots becomes hard and solid . CHAP. VIII . Of the Moon . I. VVhy the Moon hath always the same side turned towards the Earth . THE Moon hath always one and the same Face turned toward the Earth ; neither could ever any Telescope inform us , that its Body hath changed its former situation . The Reason is , because that part of the Moon which is furthest from the Earth is more solid , that is , contains more of the matter of the 3 d Element , and hath fewer pores that are filled with the matter of the 1 st and 2 d Element . For it is apparent , that solid Bodies do withdraw themselves further from the Center of the Vortex , in which they are , than those which are less close , and abound with more Pores . Because they have a greater force to continue their motion , and to abide in the state wherein they were put at first . As it is evident in Gold , Lead , and other metals , which do longer retain the impulse imprest upon them , than Wood or Stones of the same bulk and Figure . The Reason therefore why the same Face of the Moon is always turned towards us is , because that part of her which reflects Light from the Earth , is less solid , and doth contain less matter of the 3 d Element , and therefore requires a less space to move in . Now that that part of the Moon which faceth the Earth , is less solid than the other part , may be gathered from those Spots and Shades which appear up and down in it ; and which by letting in , and swallowing up the Sun-beams , produce darkness , and make an Opake Body . II. An Objection Answered . But there are some Philosophers that pretend , that the Moon is whirld about her own Axis , all the while that she is turning round about the Earth , within the time of about 29 days and an half ; because , say they , the Sun in a months time , enlightens all the parts of the Moon one after another . But it is an easie matter to make it appear , that the Moon will be enlightned in a months time in all its parts , tho' we should suppose it not to move at all about its own Axis , but only to be moved about the Earth . For Example , let T be the Body of the Earth , S the Sun , BCDE the Circle , which the Moon describes about the Earth in 29 days and an half ; and let the Moon be so placed in this Circle , as to be in Conjunction with the Sun at the point B , opposite to the point D , in her first quarter at the point C , and in the last quarter at the point E. This supposed , it is evident , that the Moon being at B , shall have her upper half 1 , 2 , 3 , enlightned ; and that being in her opposition to the Sun at D , her lower half 3 , 4 , 1 , will be so . That when she is at her first quarter at C , the half of her 2 , 3 , 4 , will be illuminated : And lastly , that when the Moon is in her last quarter at E , the half of her marked 4 , 1 , 2 , will receive the Rays of the Sun. Which makes it evident , that the Moon , in order to her being illuminated in all her parts , hath no need to turn round about her own Center , seeing that her running through the Circle wherewith she encompasseth the Earth , is alone sufficient for that purpose . III. The Moon from all parts reflects Beams to the Earth . The Moon diffuseth her light every way , and doth so reflect the same , as that the Rays do not unite in one point only , but are dispersedly reflected , and scattered every way . This proceeds from the Rugged Surface of the Sun , which dilates the Light it receives , and shews its Brightness to all that behold it . For Rough Bodies do consist of many Surfaces ; which are so disposed , as that some of them reflect their Beams this way , and others that way . But if the Moon , whom all Philosophers grant to be Spherical , were smooth and like a Convex Looking-Glass , not in all its parts thus polisht , but in one part only ; it would convey its Light to the Spectators Eye in one point only , as hath been before demonstrated . For certain it is , that an Opake Globe , having a polish'd surface , doth not reflect its Light , but as it were , from one point , as is manifest in Brass Globes , exactly polish'd , when they are exposed to the Sun. For tho' the whole Hemisphere were exposed to the Light of the Sun , yet would only the least part of the Moon , transmit the Light thereof to the Eye of a Spectator ; which because of the smallness of it , and its vast distance from that Star , must needs be extinguish'd , before it could arrive to his Eyes . IV. VVhilst the Sun shines , the compass of the Moon seems less than in the night-time . When the Sun shines , the Moon appears less than in the Night : which GASSENDUS assures us he had experienced by the help of a Telescope ; and found the Compass of the Moon , at full in the Night-times , to be 5 minutes bigger than her true Diameter . Which may also be confirmed by a more familiar Experiment , viz. by beholding the Moon when it begins first to appear at eventide , whilst the Sun is yet above the Horizon : for then its Crescent will appear so very slender , that it appears but like a Thred ; whereas when the Sun is wholly gone down , it grows broader and broader , as the darkness encreaseth . This encrease of the Light must not be ascribed to the Body of the Moon , as if it had Power of sending forth Beams from it self , and of dilating them in the Night-time ; but only because the Aether , or that Matter which is analogous to our Air , and encompasseth the Moon , is enlightned by the Sun-beams , which she reflects , and seems the same as the Body of the Moon : For being most intimately joined to the same , it is supposed to belong to the same Circle . But by making use of a Telescope , this false Light is easily discerned , for then that space , which is supposed to be illuminated , doth appear dark , and not at all touch'd by the Arc of the enlightned part . V. VVhy the Moon is not seen , whilst she is in Conjunction with the Sun. The Moon , when in Conjunction with the Sun , doth not shed any Light , neither can she be seen till she be 2 degrees distant from the Sun. And afterwards changeth her Faces , according to her different aspects to the Sun. This diversity of appearances is caused , for that the Moon doth borrow her Light from the Sun , and shines no otherwise than a Looking-Glass doth , which sends back the Beams that light upon it . Wherefore it is no wonder , if at the Conjunction , nothing of the illuminated part of the Moon be discerned by us , because then her whole enlightned half faceth the Sun , the other part being turned towards us . But during the following days , whilst she turns sideways , and hath a Sextile Aspect to the Sun , some part of her is perceived in the form of a thin Sickle or Crescent : But in the 7 th or 8 th day in her Quadrant Aspect , when she is one Quarter of the Zodiack distant from the Sun , the one half of her appears in sight . But whilst she is in the 3 d part of the Zodiack distant from the Sun , above one half of her Rim doth appear ; and on the 14 th or 15 th day , when the Moon is directly opposite to the Sun , her whole Face is turned to us . VI. VVhence the perpetual variety of the Motion of the Moon doth proceed . The Moons motion changeth every day , hour and moment : for she moves most swiftly at the Full and New ; and thence her swiftness decreaseth from the Full to the First Quarter , where she moves more slowly , and then her Motion encreaseth again till the New. The Reason of this perpetual variety is , because the concave or hollow surface of her Sphere is not round but oval : So that the Vortex of the Earth must of necessity move with unequal degrees of swiftness in its circumference : For every Fluid Body , passing through a narrower space , doth accelerate its motion , as we see in a River , when it runs through the Arches of a Bridge , whereby it becomes strained in its Current , and therefore is hastned in its motion , by the following water pressing upon it . Forasmuch therefore as an oval Figure hath one Diameter longer , and the other shorter , the Fluid Aether passing through the latter , where it is more straitned for Room , doth of necessity move more swiftly , than when it passeth through the longer Diameter , where it hath more Room ; and because in every part of an Oval Figure , there is a different wideness or capacity , there must needs follow a variety in the swiftness of motion through those spaces of different wideness ; and accordingly there must be a longer Oval Diameter betwixt the Quarters , and a shorter between the Full and New Moon , or thereabouts . VII . VVhy the distance of the Moon , from the Earth , is sometimes more , and at other times less . From what hath been said , we may easily be satisfied about the Reason of the variety of the Distance , Bulk and Brightness of the Moon ; because when the Moon is in her Quarters , near the longer Oval Diameters , she is at a greater distance from the Earth , than in the New or Full Moon , when she is near , or at her shorter Diameters ; and forasmuch as the magnitude and the light do grow or decrease equally with the distance , therefore the Swiftness , Distance , Bulk or Splendor must appear greater or less , not only about the four extream oval Points , but at all the other points of the Planetary Circle , according as the Capacity or Room betwixt the oval sides of the said Circle is greater or less . VIII . VVhence the Secundary Light of the Moon doth proceed . The Moon , whilst she is in an Eclipse , doth present an obscure light to our Eyes . It seems probable , that this Secondary Light proceeds from the Sun-beams , reflected from the Earth : If we speak of that ●ight which is seen in the New or Old Moon ; but that Light which appears in her , whilst she is Eclipsed , must be attributed to the Refraction of the said Beams , from the Air that surrounds the Earth . For seeing that the Sun doth continually dart his Beams against the Earth , they cannot be so admitted by it , but that they must rebound again from the Earth towards the Sun ; and because the Sun , when New and Old , is in that Region , she must needs receive the more Beams , as she is nearer to the Sun. And accordingly it is necessary that the Moon be enlightned with the said reflected Light , especially in that part of her , which is not directly illuminated by the Sun ; altogether in a like manner , as the Earth is enlightned by a light reflected from the Body of the Moon , in that part of her which is turned from the Sun. Now that this Secondary Light doth proceed also from the Refraction of the Air that surrounds the Earth , doth appear from hence , because the Globe of the Earth encompassed with its Atmosphere , doth project a Conical Shadow , whose length consists of about 250 Semidiameters of the Earth . And because the Sun-beams , horizontally falling upon the Atmosphere , are according to TYCHO's observation refracted at an Angle of 34 minutes ; and that they double this Angle in their passage from it , therefore consequently they are united in the Axis of the Shadow , and there are decussated or cross one another , and so pass away , and produce the Cone of a Shadow , whose top , or extremity is not above 43 Semidiameters of the Earth high , on this side the Decussation , or before they come to cross each other ; and beyond their Decussation an inverted Cone , which afterwards is confounded with the residue of the greater Cone . IX . Why the Moon is moved more swiftly than the Earth . The Moon ☽ which moves round in a peculiar Vortex ABCD , that compasseth the Earth T , is whirl'd as swiftly again about the Earth , as the Earth whirls round its own Axis . For the Moon runs round her own Circle ABCD , which 60 times exceeds the Circumference of the Earth T , in the time that the Earth only 30 times runs round its own Axis , by its Diurnal Motion . Tho' some boast themselves to have cleared this Phaenomenon , yet there seems no other reason assignable of it , but only the littleness of the Moon . For seeing that the Earth , as well as the Moon it self , is moved by the same Celestial Matter , no other cause can be imagined of this greater degree of swiftness in the Moon , than that she is less than the Earth . For this is the Rule of all moving Bodies , that whilst one is moved as swiftly again as another that is twice as big , there will be but just as much motion found in the less Body as in the greater . Now forasmuch as the swiftness of the motion of the Body of the Moon ☽ , and of the Earth T , is from the Celestial Matter , which is much the same about the Earth as about the Moon ; the Earth ought to whirl about as swift again , as it doth , in order to the running over its Cirtle 60 times in the same time that the Moon once runs through hers , ABCD , 60 times greater , but that its Bulk doth hinder it . X. Why the Moon appears greater at her Rising and Setting , than when she is elevated above the Horizon . When the Moon Riseth or Sets , she appears to us much greater , than when she is high raised above our Horizon . The Reason is , because when she is very high above our Horizon , there are no objects that interpose between her and our Eyes , whose magnitude is known by us ; that by comparing her with them , we might be able to judge of her Bulk : But when she is newly got above our Horizon , or is near Setting , we see betwixt her and our selves many Fields , the largeness whereof is in some part known to us , by which we know her to be farther from us , and consequently judge her to be greater . XI . The Moon moves swifter at the New and Full , than in other parts of her Circle The Moon doth not observe an equal tenor in running through her Circle : For when she is in Conjunction with , or in Opposition to the Sun , that is , at New and Full , she is more swiftly moved than in any other of her Aspects . The Cause of this Inequality of her Motion , is her particular Heaven ABCD , the Circumference whereof is not absolutely Spherical , but is somewhat Elliptical . For when the Globuli of the 2 d Element , which are comprehended within the Circumference ABCD , differ in motion and magnitude as well as solidity ; it must needs follow , that the more solid ones must more freely diffuse themselves towards A and C , than towards B and D , and so constitute an Oval or Elliptical Figure . And therefore it is that the Heavenly Matter is more slowly moved betwixt C and A , which is the larger part of that particular Heaven , than that which is betwixt B and D , which is the more narrow part . For it is consonant to Reason , that the Matter which carries the Planet , should flow more slowly in a broader space , and more swiftly in a narrower . As is evident in Rivers , whose Course is so much the swifter as their Channel becomes more narrow , and more slow where it widens . XII . Why the Moon is beheld under a greater Diameter at her Conjunction and Opposition . This Oval Figure of the Moons Circle also , is the Cause why the Moon at her Conjunction and Opposition is less distant from the Earth , than at her Quarters ; and consequently is seen under a greater Diameter at the time of her New and Full. XIII . How it comes to pass , that the Moon doth not fall down to the Earth . There is one difficulty still remaining , which is this : If the Moon , because of its littleness , be capable of a swifter motion ; how is it , that when she is carried about by the Heavenly matter that surrounds her , she doth not sink down towards the Earth ; and why , leaving her Circular motion when she is at C , she does not decline towards Z , rather than go to D , and then turn upwards again . We shall extricate our selves from this Difficulty , by considering that the Moon doth altogether follow the motion of the Celestial matter , tho' it have not all the degrees of swiftness which the said matter hath . For seeing that the Earth , and all the Celestial matter contained in the Vortex ABCD , is turned round about the Center T ; it follows , that the Moon which is whirl'd about the Celestial matter , must continue its motion towards the Center of the Earth T ; and that after it hath reached the point C , it dos not proceed towards Z , but goes towards D ; and that because the Heavenly matter drives it that way , and carries it along with it . XIV . Whether the Colours of the Moon be any certain Signs of the Weather . It is a common received opinion , that the Moon , as she appears under several Colours , presages changes of Weather : Which gave occasion to these Verses . The Pale Fac'd Moon , gives Rain ; When Red , 't will blow amain : But when she 's Fair and Clear , Like Weather will appear . But we must not imagine that this variety of Colour is in the Body of the Moon ; but in that exhalation or steam which is between the Eye and it . Hence it is , that when Rainy Clouds are interpos'd between our sight and the Moon , she appears of a Pale and Dusky Colour ; and again Red , when she is surrounded with many windy exhalations , and a moderate quantity of Vapour . It being a thing notorious that Colours are changed , according to the diversity of the medium through which they are transmitted . And accordingly when the Air is free from all manner of Exhalations , then the Moon appears fair and Clear. XV. Why Eclipses of the Moon do appear alike , to those that live in the same hemisphere , but not those of the Sun. An Eclipse of the Moon appears alike in Quantity , to all those who live in the same Hemisphere of the Earth , and have the Moon above their Horizon . Whereas a Solar Eclipse appears to some Inhabitants of the same Hemisphere , Partial ; to others , Total ; and to some again none at all . The Reason hereof is evident from what hath been delivered in my Institutions of Philosophy . For seeing that the Moon is destitute of any Light of her own , she must of necessity appear as much to some , as she is perceived of others deprived of Light. Whereas the Sun having an inborn Light of his own , and being only hidden by the Body of the Moon , which is interposed between the Sun and the Earth , and is less than either of them ; i● may so happen , that some part of the Earth appearing equal to the Sun , or bigger , may hide the whole Sun ; another the half of him ; another a greater or less part ; and another again no part at all . Thus that Eclipse which THALES is recorded to have observed about the Hellespont , was Total ; whereas at Alexandria in Egypt , it was only of 9 digits , with 3 fifths : Or as CLEOMEDES reports it , of 4 fifths of a Diameter . CHAP. IX . Of the Planets , Mercury , Venus , Jupiter , and Saturn . I. The Planets , Mercury and Venus , seem to move variously . MErcury and Venus appear sometimes to move from East to West ; and at othertimes the contrary way , from West to East . Forasmuch as the Earth is turn'd round about its Center from West to East , within the space of 24 hours , it follows that the Planets , Mercury and Venus must seem to move from East to West , and every day to describe a Circle Parallel to the Aequator . In like manner they must also trace a Circle about the Sun from West to East ; forasmuch as they are comprehended in the Heavenly matter , which carries the Earth that way . II. Why the foresaid Planets are more swiftly carried about the Sun , than the Earth . These 2 Planets are also more swiftly rolled about the Sun , than the Earth , which doth not finish its Circumvolution in less than a Year . The Reason is , because the Circles which Mercury and Venus run through , about the Sun , are lesser than that in which the Earth is carried ; and therefore it is necessary , that the true Circumvolutions of these 2 Planets be absolved in less than a years time . III. Why Mercury and Venus seem to move more slowly , than indeed they do . These 2 Planets seem to take up more time in their Circumvolution , than indeed they do . The Reason is , because if we fix the beginning of one of their Revolutions , when these Planets are placed betwixt the Sun and the Moon , this Period cannot be said to be finished , till they be come back to the same place again . Now forasmuch as the Earth it self hath changed its place , whilst those Planets run through their Circles , and at the end of their circumvolution is no more at the same place where it was at the beginning of it ; it follows that the appearing Period of every Planet , must of necessity comprehend , not only the whole Circumvolution it hath absolved ; but besides all that space to which the Earth hath past through during the time of the Planets Circumvolution . IV. Cassinus his Observations about the Planet Mercury . CASSINUS observes concerning the Planet Mercury , that the same is scarcely visible , because of his great nearness to the Sun , so as that it but very seldom gets free of his Rays . For he is not above 27 or 28 degrees distant from the Sun , and often turns back to the Sun again , by that time he is got 18 degrees from him , so that his greatest elongations , from the Sun , do not differ above 9 degrees from each other . The Circle of Mercuries Motion divides the Ecliptick ; and with it makes an Angle of 6 degrees ; so as that the line of Section , is not far from the Center of the Sun. The Northern Intersection , which some call the Node , is reduced to the 13 th degree of Scorpio : and these Nodes proceed one degree within the space of 40 years . Forasmuch therefore as Mercury doth not appear to us , but in his withdrawing from the Sun , he can scarcely be perceived with the help of a Telescope , in the form of a Globe or Round Body , but sometimes as if he were cut in 2 , as the Moon appears at her Quarters ; and sometimes more swell'd , and at others more deprest . And when at any time he is near the Horizon , or darkned with vapours , then nothing but his Bulk or Figure can be detected . However it is apparent that he receives his Light from the Sun , and is carried round him . V. Cassinus his Observations about the Planet Venus . Concerning the Planet Venus , the foresaid Cassinus hath observed ; first that this Planet is sometimes 40 degrees and an half distant from the Sun , that is , as far as the Moon at 4 days old is distant from him . Tho' sometimes it happens that she returns to the Sun , after a recess from him to 45 degrees ; so as that the furthest elongations of this Planet do not differ above 2 degrees . The Aphelium , or farthest distance of Venus from the Sun , is in the 2 d degree of Aquarius ; her Perihelium , or nearest approximation in the 2 d of Taurus : and these Points do continually move onwards towards the East , so as that within the space of 46 years , they proceed one degree . The foresaid famous man found that these 2 Planets moved about their own Centers . For when in the year 1666 , he had observed one part of Venus to be brighter than all the other parts of her Circumference , on the 14 th of October , 5 hours and 15 minutes after Noon ; and the year following on the 24 th day of April , about a quarter of an hour before Sun-set , had found the same bright part , near to the Line which separates the Lucid part of Venus from the Opake , and distant from her Southern Horn , above a quarter of the Diameter of Venus : and when after Sun-rising he had observed that the said Bright Part was further removed from the Southern Horn , from which it was distant the 3 d part of her Diameter ; he immediately concluded , that some kind of motion , at least , must be assigned to the Globe of Venus , tho' he dares not determine whether ▪ the same be a motion of Rotation , or of Libration only : Because Venus doth not present her self to her view but for a short time . But supposing that bright part , which he had so often seen , to have been always the same , he is not afraid to affirm that the said motion is finisht in about 23 hours ; after which the said bright part of Venus returns again to the same place . Book . 2. Part. 3. Chap. 9. I. Kip ▪ 〈◊〉 To Mr. Edward , Mr. Nicholas , M is . Ann , M is . Iane , and M is . Sarah Ieffreys , Sons and Daughters of the Worshipfull Ieffrey Ieffreys of the Priory in Brecknockshire and of the Citty of London Esq r , by Sarah his Wife . This Plate is humbly Dedicated by Richard Blome . VI. Why Mars , Jupiter , and Saturn do unequally observe their Course . Mars , Jupiter , and Saturn , seem to roll about like other Planets , within the space of 24 Hours , from East to West about the Earth ; but not equally within the same term of Time. The Reason is , because the Circles they describe do include the Circle of the Earth , and because they , as well as the Earth , do swim in the Celestial matter ; and consequently must appear , as the other Planets , to turn from East to West , within the space of 24 Hours . And forasmuch as , according to the Law of Mechanicks , the Circles which Mars , Jupiter , and Saturn do describe , must be found under the Zodiack , and are greater than that which the Earth moves in , we shall easily apprehend , that they cannot finish their Circuit in so short a time as it doth . Accordingly we know , that Mars takes up 2 years in performing his Circumvolution , Jupiter 12 , and Saturn 30 ; for they being at a farther distance from the Sun , than the Earth , the Heavenly matter which carries them about , must take up the same time in absolving of its Course . VII . Cassinus , his Observations concerning Mars . CASSINUS also gathers from those spots , that obscure the Aspect of Mars , that this Planet moves about his own Center , in the space of 24 Hours and 40 Minutes , because these spots return to the same place , at the same distance of time . He observed in Mars one part more bright than all the rest , and always in the same situation ; tho' the other spots had their different places . Jupiter , when he is in Conjunction with the Sun , appears at a greater distance to us , than when he is in opposition to him ; insomuch that we see him almost bigger by one half , when he is oppos'd to the Sun , than when conjoyn'd with him . And Mars appears five-fold greater , when he is nearest to the Earth , than when he is at his furthest Elongation from it . VIII . The secondary Planets about Jupiter , first discover'd by Galilaeus . GALILAEUS , in the year 1610 , the 7 th of January , at the first Hour of the Night , discovered 4 less Planets about Jupiter , which like so many little Moons are whirl'd round him . Those of them which are nearest to Jupiter , move more swiftly , than those which are more remote . The Revolutions of which secondary Planets are thus calculated by SIMON MARIUS : The first and inmost of them takes up , D. 1 H. 18 M. 28 S. 30 The Second . D. 03 H. 13 M. 18 S. 0 The Third D. 7 H. 03 M. 56 S. 34 The Fourth . D. 16 H. 18 M. 09 S. 15 These Attendants of Jupiter , whenever they enter the Verge of his shadow , do suffer an Eclipse after the same manner , as the Moon doth when she dips in the shadow of the Earth , and are totally depriv'd of Light ; as being Opake Bodies , which borrow their Light from the Sun. The 3 first of these in every Revolution , produce 4 Eclipses ; the 1 st , when the Satelles enters into the Rim of Jupiter ; the 2 d , when the shadow of the Satelles doth darken the Rim of the said Planet ; the 3 d , when the upper part of Jupiter , at his Elongation from us ▪ doth hide the Satelles ▪ and the 4 th , when the Satelles dips in the shadow of Jupiter : So as that the first Satelles , within the space of 7 Days , doth effect 16 Eclipses ; the second , 8 ; the third , 4 ; so as that all of them together produce 28 Eclipses : The fourth , after that he hath reached the Nodes , doth make 4 Eclipses in 17 days ; but when near his bounds , he never suffers a defect of his Light , because his Latitude is so large , that he never touches the Rim of Jupiter , or reacheth his shadow . These Eclipses are of great use , in order to the determining of the Longitudes of Places . IX . The Satellites of Saturn , discover'd by Cassinus and Hugenius . Saturn hath also been found guarded by 3 Satellites : The first of these was discovered by CASSINUS , at Paris , in the Royal Observatory , in the Year 1672 ; and the same is remov'd from the Center of Saturn , 1 Diameter of the Ring , ( mention'd by the Author , Chap. 16. ) and 2 Thirds , and absolves his motion about the Planet in 12 Days , 4 Hours , and 27 Minutes . The second was long before detected by HUGENIUS , and is much more bright than the former ; and is distant from the Center of Saturn , 4 Diameters of the said Ring , and turns round him within the space of 16 Days and 23 Hours . The third was first observed by CASSINUS , in the year 1671 , towards the End of October , at his furthest digression from Saturn . But soon after he vanish'd out of sight , and did not appear again till the 15 th of December ; and presently after disappeared , until about the beginning of February 1673 , when he continued in sight for 13 Days together . X. What is the Cause of the variation of Light , which is observed in the last Satelles of Saturn . No other Reason seems assignable for this great variation of Light in this last Satelles , than that some part of his Body doth strongly reflect the Light , whereas the other cannot do so . According as we see it happens in the Globe of Earth , where that part which is cover'd with water , is not fit to reflect the Sun-beams ; whereas the other parts of it send them back every way . This Satelles therefore either i● rolled about his own Center , or else is carried about Saturn ▪ as the Moon is carried about the Earth . And therefore when that par● of him , which is like the Continent of our Earth is turned towards us , then we see him , and he vanisheth again from our ●ight , when that part which is of the Nature o● Sea , faceth the Earth . XI . Why Saturn appears under different figures . They who first observed Saturn with a short and imperfect Telescope , were astonished when they perceived him sometimes of an Oval figure , sometimes as having 3 Bodies , that is , with ● other added to the middlemost ; sometimes solitary and perfectly round . But when these unlook'd for Appearances had stirr'd up others to the viewing of this Planet , some making use of more exquisite Instruments , ●ound , that those which before were taken to be the Lateral Globes , were in the figure of Handles or Arms , that is , hollowed out and bent , so that joyned to the middle Globe , they constituted a figure not unlike a Weavers ▪ shuttle . But at last , by the use of the most absolute Telescopes , it was ●ound that this Planet hath a round Body , as all the rest ; but hath this peculiar , that it is encompas● , as it were , with a broad Ring , not much unlike the Brim of a Hat , when the Head i● out of it ; or that of a Dish , when the bottom or hollow is taken away . And therefore this ambient Body , which before was called the Handle or Arms of Saturn , was since called the Ring . In order to the explaining of this Appearance , we must represent to our selves this Planet , as a great Globe , resembling that of the Earth , and in which we conceive 2 Poles , an Equator , and a Torrid Zone ; and that round about the said Torrid Zone there is elevated an opake Matter , which fills the space of a considerable breadth , and is disposed in the figure of a Ring , resembling that broad Circle we call the Horizon . This being thus supposed , it is certain that we must of necessity see Saturn , according as he appears at A , when we view him from a place that is much higher than the Level of the Ring ; afterwards he must appear to us , as at B , or at C , when we behold him from a place where we are not so high as the said Level . And last of all he must appear altogether round to us , as at D , when we are so placed with respect to his Body , that if his Ring were continued , it would pass through our Eye ; for then the inconsiderableness of the Thickness it hath , by reason of its great distance , makes it altogether invisible . To which may be added , that probably we fail of seeing this Ring of Saturn , because this Planet passing over against some fixt Star , and having deprived us of the view of it by one of the Tops of the Oval G , in the Figure A , the said Star will afterwards be seen at the place E , where we see a kind of Blackness , which is nothing else but the defect of the Circle , and a part of the Heaven , which offers it self to our view , by that space which remains betwixt the said Ring and Body of Saturn . CHAP. X. Of the Spots about the Sun , and the fixt Stars . I. The Sun viewed through a Telescope , appears dark and shaded . THo' the Sun , to an unassisted Eye , appears bright , and to have an uniform Aspect ; yet when we make use of a Telescope , with 2 Convex-Glasses in the figure of Lentils , it doth represent such a vast variety of bright and shaded Bodies , as if it were nothing but a continued Checker-work . This various mixture in the Body of the Sun , is not caused by the foresaid Glasses , as some have feigned , supposing that they , by reason of their Impurity , might represent shadows to our Eyes : Because when those Glasses are turn'd round , the Solar spots are not turned round with them , but keep their former situation : And moreover those of these spots which one day are seen towards the East , in the following days move forwards and are seen towards the West . These spots therefore of the Sun , are generated from those striate Particles , which entring through its Poles do run towards the Center ; from whence , because of their irregular figures , which they have got by passing the Triangular spaces , they are expell'd , as not being able to comply with the motion of the subtil Matter , which whirls round in the Sun's Center , and are cast off like Scum from a boyling Liquor ▪ so that being endued with rugged and many Corner'd figures , and running round more slowly than those which wheel about with the Sun ; they become easily entangled and grow to a great bulk , which being contiguous to the Sun , and lying upon the face of it , do cover and involve it with Darkness . II. These Spots are Fumes proceeding from the Sun. It seems very probable , that as Steams do proceed from the Body of the Earth ; so likewise Fumes and Vapours do exhale from the Sun , and are dissipated again , like those that sublime from the Earth . For tho' the whole Sun , at some time may be altogether free from any spots ; yet is he frequently so beset with them , that GASSENDUS hath observed no less than 40 of them ; yea , they sometimes increase to that bulk , as to be visible without a Telescope ; which hapned not only at the time of CHARLEMAIN , but also of late years , when KEPLER took one of those spots to be the Planet of Mercury . III. Why sometimes the outward parts of these Spots be bright and shining , and the middle parts dark . The Out-parts of the Spots are sometimes bright , and represent several Colours ; when in the mean time their Middle parts continue still opake . This proceeds from the Matter of the Sun that surrounds these spots ; for tho' probably all of them may at the beginning be of the same thickness , and equally resist the Light ; yet it may so happen , that afterwards they may be more extenuated in the Circumference , than in the midst ; and by this means the Sun-beams being refracted through these thin brims of the spots , do exhibit several Colours ; whilst all this while , the middle of them continues opake and impervious to the Solar Rays . Because the most subtil Matter , which is predominant in the Sun , and in every fixt Star , hath not force enough to transmit its own Action , because its strength is broken by meeting with the soft parts of Matter : Or , if by chance the Heavenly Globuli , being whirl'd about by the force of the Matter of the first Element , endeavour to withdraw from the Center , and to communicate the Action of Light to our Eyes ; yet is not that impulse strong enough to affect the Sense , except it be accompanied with a continual pressure of the Sun and fixt Stars , such as may be sufficient to overcome this Reluctancy , and dispose it for the reception of the Action of Light. IV. The Spots of the Sun are more frequently perceived about the Ecliptick , than about the Poles . These Solar spots are more commonly discerned about the Ecliptick , than towards the Poles , according to the unanimous Assertion of most Astronomers ; some whereof have been so acurate in the description they have given of their progress , as to declare that these spots move about the Rim of the Sun , not in perfect parallel Lines to the Ecliptick , but with an inclination towards 3 Degrees and an half . The Cause of this Appearance is , that tho' the Particles , whereof these spots be composed , have Action enough , when they proceed from the Eclipticks of other Vortexes , to pass through the Poles of the Sun , and to be carried towards its Ecliptick ; yet when they are once mingled with the most subtil Matter of the Sun , not being able to comply with the most swift agitation thereof , are flung off towards the Heaven , where the motion is not so swift ; as before hath been said concerning the Scum. Now the Reason why they are rather expell'd towards the Ecliptick , than towards the Poles , is this , because the new Matter , which continually enters through the Poles of the Sun , thrusts out the striate Particles , and all others that are easily entangled together , and drives them upwards . For the better clearing of this , let us suppose 2 Rivers flowing from opposite Points , the one from A to S , and the other from B towards the same S ; and that their Streams meeting at S , and driving each other forward , make a deep Hole or Whirl-pool , d e f g ; where , after having performed several Circulations , they continue their Course towards M and Y. Besides , let us suppose that by this forceable meeting of these Streams , much Froth is produced , which swims on the top of the Vortex S , and follows the motion of the Water : We shall easily apprehend , that this Froth cannot tend to A or B , that is , towards the Poles ; but after having taken some compasses in the said Whirlpool , will take its Course towards M and Y , that is , towards the Ecliptick . V. The Spots of the Sun are sometimes changed into Torches , and Torches sometimes into Solar spots . The Spots of the Sun are sometimes changed into Torches ; and those Parts which before were dark and misty , appear bright and shining : And , on the contrary , these Torches are sometimes turned into Spots . The cause of this Change is the Ebullition of the Sun , whereby it continually casts out some of its parts , and soon after swallows , or takes them in again . For Spots are turned into Torches , when the Solar matter , which flows about them , is raised above their Rims , and by exerting its force upon them , does produce that Action , which reaching our Eyes , produceth that which we call Light. For seeing that the Matter of the Sun is intercepted between the spots themselves , and the surface of the Neighbouring Heaven , the swiftness of the motion is increased , because of the narrowness of the Space ; which therefore must render the Light of the Sun more intense . As we find by Experience in Rivers , whose swiftness is increased , and becomes more strong , the narrower the Channel is , or when straitned by great Stones . But Torches are changed into Spots , and those which before were the more bright parts of the Sun become darkned , when that more subtil Matter , which lay upon their surfaces , is swallowed up by the Sun , into the room whereof , when abundance of New matter comes , whose particles cling together , they produce a close and dark Body . VI. What the Reason is , why the Sun hath for some days been without Light. Histories assure us , that the Light of the Sun hath been frequently intercepted to that degree , that his Light did not much exceed that of the Moon . Yea , what is more , Histories tell us , that in PLINY's time , the Sun for 12 Days together was not to be found ; and that when CONSTANTINE had his Eyes put out , it did not shine for 17 Days together , and that Darkness cover'd the Earth all that while . I suppose , that no more proper Cause can be assign'd for this Obnubilation , than the Spots which at these several times did beset the surface of the Sun , and hinder the diffusion of his Light. For tho' these spots , at their first Gathering , be very soft and loose Bodies , which are able to break the force of the most subtil matter ; yet the Matter of the Suns Substance , continually beating against them , makes them smooth and hard , whilst the other part of them , which is turned towards the Heaven , still continues soft and loose , as before . And therefore they cannot without difficulty be dissolved , because the Matter of the Sun doth continually rush against the inside surface of them ; but rather increase continually , as long as these their Edges , which are raised above the surface of the Sun , are not made hard by the constant pushing of the said Matter . And therefore whenever this happens , it cannot seem strange , that one and the same spot should so spread it self over the surface of the Sun , as to intercept the Light of it , not only for many Days , but also for some Months . VII . How these Spots come to appear of divers figures . These Spots sometimes appear of an Oval , and sometimes of some other figure , when they move in the utmost Circumference of the Suns Body . The Reason is , because there they must needs appear less , when their Illuminated part is invisible to us , and the lesser dark part is only perceived by us ; but the more they approach towards the middle of the Sun 's Round , and in a right Line to our Eye , so much the greater and rounder do they appear to us . Another Reason also of their different Appearance , may be the various Configuration and Disposition they have amongst themselves , as when some of them happen to meet in the same Line of our Sight , and by this means do in part hide one another , for then they appear of a kind of Oval figure . And forasmuch as many of them do frequently thus meet together , and are afterwards separated again ; it so happens , that some of them seem to us to be generated , and others again to be destroy'd or vanish ; which then comes to pass , when spots of different Magnitudes and Distance ( some of them moving more swiftly , and others more slowly ) do hide one another ; and when some of the lesser of them , and that are nearer to the Sun , are by degrees Eclipsed , and afterwards again uncover'd , and so appear , as before . CHAP. XI . Of Spots that appear in the Orb of the Moon . I. Of the Perpetual and Temporary Spots in the Moon . THere be 2 sorts of Spots perceiv'd in the Moon , some are perpetual , and which from the beginning have appeared in it , as proceeding from the make and disposition of her Parts : And others Temporary , which only are about the surface of her Body , and after a short time vanish and disappear again . The Perpetual spots , do always appear of the same dark and dusky Colour ; and which way soever they be posited , with respect to the Sun , do always retain the same degree of Obscurity , and are much darker than those spots that are temporary . This Phaenomenon proves , that there is a great affinity betwixt our Earth and the Lunar Globe , and that like Bodies are found in them both . For we cannot imagine these constant or perpetual spots to be any thing else , but Seas which are diffused over the Body of it . For it is evident , that the Light reflected from Water , is much weaker than that which is reflected from the Earth , or any other solid matter ; as we may see in our Sea , which doth not appear of a white , but of blewish , or Sea-green Colour . We observe also , that white things , when moistned , do become more obscure , and draw towards a black Colour . Let but some Water be spilt upon a Floor ( to make use of GALILAEUS his Example ) and presently the moistned Bricks will appear of a darker Colour than the rest , because the water filling their pores , makes their surfaces plain and even ; which consequently do unite the Rays , and direct them to one Point only . And seeing that fewer Rays are reflected from a Convex surface , than from one that is plain , the Light which from the Moon can be reflected to our Eyes , must be so inconsiderable in quantity and strength , as not to be so much as one 14000 th part of her Diameter . II. What the Reason is of those bright parts which sometimes appear in the Moon . The Moon has some parts which are much brighter than the rest , and which do so strongly affect our Sight , as that they seem to be very distant from one another . Whence GASSENDUS tells us , that about the 3d or 4th day after the New Moon , we may for the most part observe , beyond the lower point of her Body , at the distance of about a 27th part of her Circumference , a certain bright Point , and sometimes also a 2d and a 3d , at a greater distance , whilst the Intervals betwixt them continue still in obscurity . These Appearances give us good ground to conclude , that there be Mountains in the Moon , seeing that with the assistance of a Telescope , the Ridges of several of them are perceived very bright , which cast a most thick shadow , and that greater or less , according as those Eminencies are more or less distant from the Confines , which separate the enlightned part of the Moon from the dark . For it is observed , that these shadows decrease , according as the Illumination is increased , until that they do altogether vanish away upon the diffusion of the Light over the whole Hemisphere . And after that the Lunar Beams are come to the other Hemisphere , the same Ridges or Tops of Mountains do appear again , and cast their shadows , but towards an opposite Point . Which Appearances afford us an incontestable Proof , that the Moon hath her Mountains , as well as our Earth , whose Tops are illustrated by the Sun , and shed a great Light , whilst in the mean time her lower and more deprest parts , continue obsc●●e and dusky . III. Whence proceeds that appearance of a Face , which is seen in the Moon . About the 6 th day of the Moon , towards the Western part of it , there appears the Face of a Man , with a broad Fore-head , a crooked Nose , a wide Mouth , and Eyes deep sunk . This Appearance is caused by several Spots , that are deprest between the foresaid Prominences . For seeing that the Mountains in the Moon , do far exceed ours in height , they accordingly project great shadows , which renders their Intervals dark and obscure , and makes them look like spots residing in those places . This we find by Experience in the Mountainous parts of the Earth , which are thick set with Trees , and therefore appear more dark than bare and open Fields ; because the Trees make a great shade , and hinder the Rays from proceeding further . Thus forasmuch as not only Rocks and Banks are discover'd in the Moon , but also very high Mountains ; the shadows which they cast , may be so ranged as to represent the Fore-head , Nose , Mouth , Eyes , and Lips of a Man , but very deformed : Seeing that it cannot be question'd , but that the even or plain parts of the Moon , which lye between the Mountains , are dark and reflect no Light at all towards us ; and that therefore the spots , which represent to us the parts of some deformed Countenance , do not proceed from the Tops of the Mountains , but must rather be attributed to their Intervals , between which the shadows are projected . IV. Why the Face of a Man , rather than any other figure , is perceived in the Moon . But if any one enquire further , how it comes to pass that when we behold the Moon , we seem to see the Face of a Man , with Eyes , Nose , Mouth , &c. when indeed there is no such thing there . To this I answer , that no other Reason can be assign'd for this Appearance , save only that the Footsteps or Traces of a human Countenance , are so deeply imprest in our Brain , from our frequent , and almost continual beholding of the Faces of Men ; that the Animal spirits , which have their Rendevous in the Brain , not being able to penetrate the other parts of it , because of their Resistance , are easily turned aside , by the direct Light of the Moon imprest upon them , and made to betake themselves to those Traces , to which the Idea's of a human Face are linked by Nature . And tho' others seem to behold in the Moon , a Man standing , or any other Appearance , this is only to be attributed to their Imagination , which having been strongly imprest by such like Objects , have some Traces left in it , which are easily open'd again , by any thing that hath the least resemblance with them . V. Why the Moon increasing , appears with Teeth like a Saw. The Moon increasing , being look'd upon through a Telescope , doth appear rugged and , as it were , with Teeth like a Saw ; as if in the very confines of the Luminous part of it , there were some rugged and uneven Bodies , that did terminate that part of its surface . The Reason is , because the Sun being then newly risen , and only darting his Rays side-ways , doth cast shadows towards the opposite part . And because this Section of the shadow is very unequal , because of the great variety and multiplicity of the Mountains against which the Solar Rays are reflected , the Face of the Moon must needs appear uneven and jagged . VI. Why the Moon at the Full doth appear bright all over . No spots or shadows are discerned in the Moon , when she is at the Full ; yea , those very parts which appear'd very black at the time of her Conjunction , do at the Full Moon appear most bright and refulgent . The Reason is , because all the parts the Moon then discovers to us , are illuminated by the Sun , who being directly opposite to her , doth enlighten all her most abstruse parts : Or , if any of her parts , by reason of their bending downwards , continue unenlightned , the same are cover'd by some nearer Parts , which turned towards us and them , and so do not appear to us at that time . To which may be added , that those Intercals which before were shaded , do not only at the Full Moon receive the direct Rays of the Sun ; but also the Beams which are reflected from the sides of the Mountains , by which reflexion all the parts of the Moon cannot but appear white and refulgent to our Eyes . CHAP. XII . Of Comets . I. Comets run through several Regions of the Heavens . COmets observe no certain Tract in the Heavens , but perform their Courses sometimes through this , and sometimes through another part of them . For some do first appear at the Sun 's rising , others at his setting . The Comet which appeared in the Year 1585 , was almost directly opposite to the Sun , and wanted but little of receiving his Rays directly : Whereas another that appeared in 1607 , was first seen about the Bear , when the Sun was near the Winter Tropick . The Cause of these Appearances will be evident to us , if we consider that Comets , are Stars cover'd with spots , and swallowed up of other Vortexes . Now , forasmuch as they may happen to fall into any Quarter of the Heavens , accordingly they may sometimes pass through one , and at other times through another part of the Heaven ; neither is there any part through which they may not take their course at some time or other . The place therefore of the appearance of Comets , is very uncertain , seeing that they promiscuously may pass by the Stars of any Asterism . So that Comet which appeared in 1618 , did seem to come forth from the Rays of the Rising-Sun ; when as others have been seen to appear from under the Beams of the Setting-Sun . II. Why some Comets move towards the East , others towards the West . Comets seem to move every day , from East to West about the Earth ; because the Earth moves the quite contrary way . But yet forasmuch as their own proper motion is indeterminate , those which come from a Vortex , which is towards the East , supposing they can continue their motion , will move towards the West ; and those which proceed from a Vortex towards the West , must consequently move twards the East ; yet with this Circumstance , that when they have once taken their determination towards the East , or towards the West , their Course is every whit as exact as that of the Planets ; for after having 2 or 3 times calculated their Diurnal motion , it is easie to compose an Ephemerides of their whole Course , and to know as perfectly the degrees of their swiftness and slowness , as we know all the degrees of Heaven , through which they are to take their progress , and their various Configurations with the Stars . III. Why the Comets vanish at last . From what hath been said , may be gather'd the Reason why a Comet at first appears greater , and afterwards continually decreaseth , until its total disappearance : For seeing that Comets receive their Light from the Sun , after that they are past out of our Vortex , they can no longer appear to our Eyes . IV. The Time of the Continuance of Comets , is uncertain . Comets have no time prefixt to their motion : For sometimes many years pass without the appearance of any of them ; and at other times many are seen in one and the same year : As Historians tell us , that in the year 1618 , there appeared no less than 3 or 4. Forasmuch as Comets proceed from several Vortexes into ours , it is very difficult to determine , whether their Appearance be fortuitous and casual , or regulated and necessary : But howsoever it be , we are to consider it as fortuitous , because all the Observations that have be been made hitherto about this Matter , are not over exact . And if so be that Comets do never begin to appear in the Zodiack , it is without doubt , because the motion of our Vortex , which is very rapid in that part of it , makes their entrance that way more difficult , or , it it may be , altogether impossible . V. Why Comets do generally appear under the same Magnitude . Comets do generally appear under the same Magnitude , insomuch as that being beheld through a Telescope ( if we will believe the Assertions of some ) they do not appear greater , than when beheld without it . The Reason is , because they are so far from us , that one and the same Comet may be perceived at the same time by several Spectators , tho' at a vast distance from one another , and that without any Parallax . So that they are probably concluded to be in that vast Space which is supposed to be betwixt Saturn and the fixt Stars . For the Comets are such vast Bodies , and are moved with such extraordinary swiftness , that they stand in need of that immense Space for the performing of their Courses ; neither can any other places be assigned , wherein they can conveniently absolve them . VI. Comets being in the highest Heavens , cannot have any Parallax . But how can it be , may some say , That Comets being beheld by Spectators with a vast Tract of the Earth between them , should exhibit no Parallax or variation of Aspect ? This difficulty will be fully cleared by the Figure . For suppose we that some Luminous Body A , or F , placed in the lower part of Heaven , should be beheld by 2 Persons at a distance , D and B , at the same time ; then will the Luminous Body A , which is seen by the Spectator D , appear over against the Luminous Body E ; and the Luminous Body F , seen by the other , will appear over against the Luminous Body H. But the same Luminous Body A , when perceived by another Person at a distance B , will appear to him about the Luminous Body C. And the Luminous Body E , seen at the same time by the Person B , will be discover'd by him over against the Body G. And thus the Aspects of these 2 Bodies , A and F , according to their different situation , will produce a greater or less Parallax , as is C and E , or G and H. But if the Luminous Body be placed in the upper part of Heaven , about I ; it will appear to both Persons , at a distance from each other , in the same place , that is , over against the Luminous Body K. VII . Why the Comets do vanish after a few Months appearance . Comets , after a few Months or Days , do disappear and vanish . And therefore PLINY determines their longest appearance to 185 Days : Seeing that which was seen in Nero's time , and was lookt to be of the longest continuance of any other , was conspicuous only the time of 6 Months , tho' in all that time it scarce run through the one half of Heaven . The Reason whereof is , because Comets , by passing from one Vortex to another , are driven towards the Circumference of them , because of their solidity : And tho' they every where retain the same degree of Celerity ; yet because they have more Agitation , than to be stopt by the Matter of the Vortex , through which they pass , they slip into a Neighbouring Vortex , much like a Ship , which being carried contrary to the Stream of a River , doth in some degree comply with the motion of the River , but is at last driven to the Shoar . Thus a Comet Coursing it sometimes through this , and sometimes through another part of Heaven , doth continually keep it self at a distance from the Center of the Heaven , wandering only in the Circumference of it ; and so by this means it comes to leave our Heaven within a few Days or Months , and pass into others which are invisible to us . Wherefore , if we measure the Space which the Comets run through , we shall seldom perceive it to reach the half of a Circle , and that most frequently it doth not exceed the quarter of one . And if at any time it happens , that their Appearance is continued 4 Months , or longer , this is because they enter into our Vortex , near the Poles of it , where they find the Matter less agitated . VIII . Comets move much more slowly towards the End of their Course , than at the beginning of it . Comets about the beginning of their Appearance are most swiftly moved , and but slowly towards the end of it ; according to the account which Astronomers give us of that which appeared in 1572 ; which at the beginning of its motion , proceeded 5 Degrees every day , and towards the End thereof scarcely Half a Degree . The Reason hereof must be fetched from the distance of the Comets ; for tho' Comets by passing through the Extremities or utmost parts of the Vortexes , do always keep the same degree of swiftness ; yet because at first they have run a good way of their Course before we see them , by reason of the Matter they bring along with them , which too much refracts the Rays of Light ; and then do by little and little move towards other Vortexes , and withdraw from our sight , therefore their Courses appear more slow towards the end of them . After the same manner as when we see a Traveller , passing on his way with the same pace , as long as he is not at any considerable distance from us , we perceive no difference in his gate , until he be come to a greater distance , when he appears to us to move more slowly ; not because of his moving so indeed , but because of his greater distance from us . IX . The Motion of Comets appears swifter in the middle of their motion . Tho' Comets move more swiftly , when they first enter into any Vortex , than after that they have been there for some time ; yet is the midst of their Course swifter than any other parts of it ; because being then in their Perigaeum , or place nearest to the Earth , they are also in those parts of the Line they describe , which are nearest to the Earth : Whereas , when they are at the beginning or end of their Course , they are about those parts of the same Line , which are the most remote from us . To this we must add , that when a Comet at the same time is in his Perigaeum , and his opposition with the Sun , his motion must appear much more swift , because he is then nearer to us by the whole quantity of the Excentrick of the Earth . X. What is the Cause of the Tail and Beard of Comets . Comets commonly shed Hairs from them , especially on that side which is opposite to the Sun : But after a various manner ; for some drag a Tail after them , others have a long Beard , others represent a Rose , by having these Hairs scatter'd round them . This variety proceeds from the different Heavenly Globuli , that are found in our Heaven . For we suppose those that are near to the Center of our Vortex to be less , but that they increase by degrees , as they draw nearer to the Orb of Saturn ; which after they have once past , they are all of them equal , and whirl'd about with the same degree of swiftness . Forasmuch therefore as Comets are carried in the utmost parts of the Vortex , and borrow all the Light they reflect to us from the Sun , it follows , that those Beams of Light , which are communicated by the greater of those Globuli , by that time they come to the lesser , do not only pass according to Right Lines , by which , as being the chiefest , the Head of the Comet is seen by us , but are also refracted and dispersed side-ways . As if a Vessel should be so fill'd with Bullets , as that the great ones did lye upon the lesser , we shall find , that upon boring a Hole at the bottom of the Vessel , the greater Bullets lying at the top , must in their descent press upon more of the lesser , and drive them down to Right Lines . And the same thing is observed in Comets : For seeing that the Sun is much about in the midst between the Comet and the Earth , his Rays beating against the Comet , and scatter'd on every side of it , do produce the Hair of it : But when the Earth withdraws from the Right Line , which joyns the Centers of the Sun and a Comet , then the Beams of the Sun which are reflected towards us , do represent the Body or Head of the Comet ; and those which are diffused towards the Edges of it , do represent its Beard or Tail. Which are called by either of their Names , as they either go before , or follow the Body of it . XI . How Comets come to appear with Tails , Hair , or Beams like Roses . The Figure will fully clear this Point . Let the Sun be S , the Circle through which the Earth runs in a Years time , 2 , 3 , 4 , 5 , according to the order of the said Ciphers . The term or limit from whence the Globuli begin to grow less and less , DEFG , and the Comet in our Heaven C. It is apparent that the Rays of the Sun darted against this Comet , towards all the parts of the Circle DEFGH , are in such a manner reflected thence , that those that fall perpendicularly upon F , do most of them tend towards 3 ; but some of them are scatter'd this way and that way ; and those which fall obliquely upon G , do not only tend directly towards 4 ; but are in part refracted towards 3 : And lastly , that those which fall upon H , do not reach directly to the Circle of the Earth 2 3 4 5 , but being reflected , tend towards 4 and 5. Whence it is evident , that when the Earth is in the part 3 of her Orb , the Comet C will appear to those that view it from thence , with Hair scatter'd on all sides of it , which sort of Comets are commonly called Roses : For the Rays that come directly from the Comet C , to 3 , do represent the Head of it ; and the weaker , which proced from E and G , towards 3 , do afford the appearance of its Hair. But if the Earth be at 4 , then the same Comet will be perceived by the strait Rays CG 4 , and its Tail will appear directed only to one part , by the Rays that are reflected from H , and other places between G and H , towards 4. And in like manner , when the Earth is at 2 , the Comet will be perceived by means of the direct Rays CE 2 , and the Hair of it by the oblique Rays , which are plac'd between CE 2 , and CD 2. Neither will there be any difference , save that when the Spectator is placed at 2 , the Comet will appear in the Morning , with its Hair going before it , but to the Spectator placed at 4 , the Comet will appear in the Evening , with a Tail trailing after it . XII . Why none of these appearances are ever perceived in the Planets . The Reason why the Planets never appear with Tails , Beards , or Hair scattered round them like Comets , is because the particles of the 2 d Element , which encompasseth them , are not big enough to make Beams that enlarge and divide themselves into many others ; whereas those that are about the Comets , are always big enough for that purpose . XIII . Whether Comets presage future events . Comets are commonly look'd upon as the forerunners of great Calamities , and are supposed to presage Storms and Tempestuous Weather , Devastations , Famine , Wars , Death of Princes , Plague . Thus the Comet that appeared in VESPASIANS time , is said to have presaged his Death ; others the taking of Rome by ALARICUS ; the Murther of the Emperour MAURICE , and destruction of MAHOMET ; the Death of CHARLEMAIN ; the irruption of the TARTARS into Silesia , and the cutting off of the Inhabitants Ears . Such Stories as these are common amongst the vulgar , and believed also by many who think themselves much wiser than their Neighbours . But if we examine the matter , we shall find that the appearance of these Stars had no connexion at all with the things that hapned soon after their appearance . For if Comets be the signs of Wars , the death of Princes , &c. Why do these ever happen without the foregoing presages ? Why do Kings die , Famin and Plague prevail , when no Comets at all have discovered themselves to give warning of these accidents to the World ? True it is , that these events are sometimes ushered in by Comets , but more frequently happen without them . Moreover , seeing that Comets pass about the Earth , how is it that they foretell Overthrow and Destruction to some , Success and Victory to others ? Probably indeed we might be induced to own this power in Comets , if Kings only died when they appeared ; if they could distinguish between persons , or if they only aspect Great-Men . But since we always find the Funerals of Princes and Great-Men , accompanied with so many thousand of vulgar Exequies , have we not great reason to conclude , that they have no greater force or influence upon the former , than upon these latter ? XIV . The Affairs of Men are covered with great darkness . But some Body will say ; it is certain that these kind of Stars are sometimes sent by God to denounce some calamity or other to the World. Be it so , for I will not deny it ; but by what Argument can it be proved , that the appearance of a Comet is to denounce this or the other particular event , rather than another ? Has GOD ever by Revelation made known to us , that when a Comet moves towards the West , it denotes danger from things Foreign and without ; and when to the East , danger from within ? It is sure enough , that the Comets have no Power over us , and that it is only our Folly or Ignorance that makes us affraid of them . CHAP. XIII . Of the Productions of the Stars . I. How the Sun is said to be the Author of the works of Nature . IT hath hitherto been the common belief of most Men , that the Stars govern these inferiour things ; and by an universally diffused Virtue , preside over Human Affairs . Hence it is that they have attributed Heat to Mars , Cold to Mercury , Moisture to the Moon , as supposing their Dominion chiefly to consist in these qualities , and that they impart these to all their inferiour Subjects . Therefore it is that they call the Sun , the Parent of the Universe , and the Great Artificer of all Natural Works ; because they find that his presence imparts Life and Vigour to all Natural Things , as his absence , on the contrary , is the cause of their failing , wasting and Death . Some Fancy Influences in the Sun , by which he concurs to the production of all sublunary things . But would they diligently give heed to the Suns Action , they would find him to have no other but that of Illumination ; or if they meet with any other , that they are reducible to it , as to their original . For that the Sun doth heat , dry and burn Bodies , proceeds from this Act of Illumination , which produceth these various effects according to the different disposition of the Subjects . II. How the Sun may be said to be the Cause of moisture and cold . If any one say that Cold and Moisture , wherewith Bodies are affected , cannot be derived from the Sun. I Answer , That these also by accident do proceed from the Sun ; forasmuch as during his absence , the moisture is no more discust and extenuated , and therefore the Vapours , either by their abundance , or by supervening Cold , become condensed , and moisten . III. How the Sun produceth fair weather and tempestuous . The Sun is the Cause of the Tempestuous and Fair Weather ; and therefore when he is about the midst of Sagittary , upon the dissolution of those humours which before were bound up , and the Earth being watered with them , he produceth fruitful Western Winds : He stirs up the forces of the Pleiades and Hyades in Taurus ; those of the Kids towards the North ; those of his Neighbour Orion towards the South ; and of Arcturus over against him , which stir up Southern blasts , and for some days together , do moisten with Rains the sown Seeds . These and the like effects do not proceed from the Sun , as from a special Cause , but only as from a General , who diffusing his Rays every where , and promiscuously illuminating all Bodies , is not determined more to this effect , than to another . But if the Sun produce stormy Weather in one part of the Earth , and Fair in another , this is not so much to be attributed to him , as to the situation and disposition of the several parts of the Earth , which receiving his Beams after a different manner , are differently affected by them . For that we , for instance , have a pleasant Summer , and that our Antipodes , at the same time , suffer an unpleasant and sluggish Winter Season , doth depend on the Sun , who with a constant and even Course runs through the Zodiack , and uniformly diffuseth his heat . Who will say that the Sun is the Cause of Tempests and Fair Weather ; when at the same time , he is the same on this side , or beyond the Equator ? The reason therefore why the Sun doth more copiously impart his Light and Heat , when it is Summer with us , is to be imputed to the situation of the Earth , that we tread upon , and which makes the difference between us and the Antipodes , with whom it is Winter ; but not all to the Sun , to whom it is meerly accidentary , that they are cold , whilst we have heat , or who darts his Beams obliquely upon them , whilst he is perpendicular to us . IV. In what sense the Stars are said to be for Signs and Seasons Neither doth it contradict any thing that we have said , what the Scripture declares concerning the Sun , Moon and Stars , that they were to be for Signs and Seasons , and for Days and Years . Because these things are no otherwise signified by the Stars , than by the Swallows , who by their coming and going , do presage the Spring and Winter ; or as Rainbows , Lightning , Darkness and other changes of the Air , do indicate Showers , Thunder or Fair Weather . For as Swallows are not the Cause of the Spring , nor the Rainbow of Fair Weather , but only signs of either of them : So neither is the Dog-Star a cause of the great Heats we have at the latter end of Summer , but only a sign of the time wherein they happen . As shall be declared hereafter . V. Whether the Moon hath any Dominion ●ver Sublunary things . The Moon contributes very much to the changes we have here below , for she not only raiseth violent Winds , excites Storms , and reduceth condensed Vapours into Rain : but moreover doth make Seeds to grow , and ripens the Fruits of the Earth , and encreaseth or lesseneth moisture , according as she encreaseth , or is in the wane . Tho' all these things pass with the most of People for indubitable , yet we have good reason to affirm , that they are taken up without sufficient ground or reason ; because Storms are raised , Showers moisten the Earth , and Plants encrease and ripen , as well when she is opposite to the Sun , as when she is in her first , or last Quarter ; except we should say that she hath the power by the weak light she draws from the Sun , of moving or stirring those humours , which she is not able to discuss , and therefore is said to foment and encrease them . But let that virtue be what it will , sure it is that it cannot with any reason be ascribed to her , seeing that it belongs only to the Sun as a General Cause ; who by his Beams produceth all the vicissitudes of times and things , which we see here on Earth . Hence are those Rules of Astrologers , that Millet should be sown in April , whilst the Sun is in Taurus ; and Wheat in October , when the Sun riseth together with Scorpius , and when the Pleiades sink out of sight , as the same is elegantly described by Virgil , in the first Book of his Georgicks . And Millet then your Annual care awakes , When Taurus Golden-horns open the Year ; And Syrius leaves to other Stars the Sphear . But if for Wheat and stronger Corn , thy ground Thou exercise , and but a Crop propound ; First let the Eastern Pleiades go down , And the bright Star of Ariadnes Crown : Commit due Seed to Furrows then , and here Trust● Earth with hope of the ensuing year . Hence it is that the Poets call Orion , Stormy or Tempestuous ; the Vergiliae or Pleiades , Showery or Cloudy , because upon their appearance the Seas are troubled with Storms , and the Earth with Rainy and Cloudy Weather . I do not deny but that the Stars may be said to be the Signs of changes of weather and seasons ; but by no means the Causes of them , as if by their Influence and Activity Plants did grow , and attain their Maturity ; but only point out those times , wherein the Sun is more favourable to the growth of Corn , or when the Sea is most subject to Storms . VI. The Dog-star hath no virtue for the producing of Heat or Diseases . The Dog-star excites extream heats , and is sometimes so malignant , as to produce dangerous and Epidemical Diseases . But this event is to be resolved as the former ; for this intense Heat doth not proceed from the Dog-star , as if there were any virtue in him , to cause , and excite some extream hot Spirits , proper to inflame and destroy the healthful temper of mens Bodies : But because this Star doth arise at that time , when the Sun by his nearness to the Earth , doth very much dry up its moisture , and draw forth those exhalations , which infecting the Air first of all , do afterwards communicate the same corruption to Bodies . Hence it is that the Air at Rome is at that time counted very unwholsome , because the Country thereabouts abounds with may Caves and Holes , whence the Sun raiseth many exhalations that are very prejudicial to health . But it is evident , that these effects cannot be attributed to the Dog-star , because that Constellation , when the Heat is at the height , is not advancing towards our vertical point , but withdrawing towards that of our Antipodes , and therefore ought rather to affect them , than us . For this is common to all Stars and Constellations , that they affect most those parts of the Earth , on which they dart their more direct Rays . Which since it doth not happen in the Dog-star , and that our Antipodes , at that time , are opprest with Cold , when our Climate is scorcht with Heat ; we may safely conclude , that the Heats we are sensible of , at that time , do not proceed from the Dog-star , but that there is a quite different Principle to be assigned for our heat . VII . It is absurd to ascribe acute Diseases to the Dog-star . How absurd it is to attribute Acute Diseases to the Dog-star , is evident from hence , because whereas that Constellation about 2000 years since , did arise about 23 or 24 days after the Solstice , that is , about the 7 th of July , of our Style ; it is still supposed to rise at the same time ; whereas indeed the Dog-star doth not rise now till a month after , by reason of the motion of the Fixt Stars towards the East , according to the order of the Signs . And notwithstanding Acute Diseases , Fevers , &c. are commonly attributed to the former term , beginning at the 7 th day of July . But who can believe that those extream Heats , we are sensible of in July , will ever be translated to January ? When yet it is most certain , that after 10000 Years , if the World continue so long , the Dog-star will arise about that time . VIII . The Planets do not contribute to the Moisture or Drought of Sublunary Bodies . The Virtue and Efficacy of the Planets are proved by certain Experiments ; as that some of them influence Cold , others Heat ; some under such an Aspect communicate Moisture , and under another Drought . Whence is that of PLINY , When the Grass and Herbs are grown , and that they stand in need of more Moisture , whereby they may arrive to their full growth and perfection ; the Sun by entring the Constellation of Cancer , doth furnish and supply the same . This also , in a good Sense , may be said to be false and erroneous ; for seeing that all the Planets , act only by the light which they borrow from the Sun , and that they reflect nothing but it , there can no diversity of Effects be inferr'd from the variation of it . For all that can be gathered from their Conjunction with the Sun , is only this , that the Air is Hot in Summer , and Cold in Winter . But as to what Weather it will be the next Year , when the Sun shall enter this or the other House ; when the Dog-star shall arise ; or when Arcturus shall set ; whether the Winds will be boisterous ; whether we shall have a hot Summer , cannot with any certainty be known from any presage that can be taken from the Stars ; since it frequently happens that the very Seasons of the Year are confounded , so as that we have cold Summers , clear and mild Winters , a hot Spring , and Winter-like Autumns . For the World is not governed in such an exact and setled order , but that great alterations happen in the Seasons of it , and make it look as if it were governed by hap and chance . IX . The Stars have no Power over Sublunary things . Conclude we therefore , that no Stars , besides the Sun , who acts only by his Light and Heat , have any influence on things here below : And that therefore it is a vain thing for Astrologers to predict Wind or Rain from the Position or Aspects of the Moon , or from the same indication to prescribe the taking of a Potion , or Blood-letting , or to determine that it will be good or bad Sailing Weather ; that Trees are to be planted , Flowers and Herbs watered in the encrease of the Moon . From all which notions , I question not but men will be delivered , by considering their vanity , and that they are only grounded on such suppositions , the truth whereof can never be proved . CHAP. XIV . Of the Predictions of Astrologers . I. Whether Thales , by the help of Astrology , foretold the Dearth of Oyl . IT is a thing notorious , that THALES the Philosopher , was skilful in Astronomy and Astrology ; and that from this Knowledge of his , he was assured of a Dearth of Oyl , which came to pass accordingly . Tho' this be a Story , commonly avouched by Astrologers , to maintain the Glory of their Science , yet it may easily be made out , that he did not conjecture this from any Rules or Precepts of Astrology , but from his continual Study of Nature . For being a great Natural Philosopher , and being well acquainted with the virtue and efficacy of Water ( which he maintained to be the Principle of all things ) he could not be ignorant what Fruits stood in most need of moisture , and how much they were beholden to Rain for their growth and increase ; and in what season of the Year they thrive best . All these things he might easily know without the Precepts of Astrology , they being such , as no man , skill'd in Natural Philosophy , can be ignorant of . But if they will needs have it , that Thales foreknew this by his Skill in Astrology , why do not they do as much , who pretend to be so well vers'd in the said Art ? How comes it to pass that they are always poor , if they , by their Skill , have the same opportunities of enriching themselves which Thales had ? But the case is plain , that they themselves cannot trust the Truth of their own Principles , and are affraid of spoiling their Credit , by a too peremptory assertion of any thing that is built on them . II. Reasons that prove Judicial Astrology to be vain and false . And not without good Reason : For 1 st , They are not certain of the Nature and Virtue , even of those Stars that are most known . 2 dly . Because the Nature and Virtues of most of the Stars are utterly unknown to them ; which unknown Virtues may variously change and alter the operations and effects of those Stars that are known . 3 dly . Because they can give no Reason , why a Figure erected for a Childs Nativity , to guess at his Fate , Manners , &c. must be taken from the time of his Birth , rather than from that of his Conception . 4 thly . Forasmuch as the Aspects of the Stars are greatly changed in a small moment of time , by reason of the incredible swiftness of their motion ; how will any Mother or Midwife be able so exactly to determine the very just moment of the Childs Birth , so as to make the Astrologers Judgment true and certain , which cannot be pretended , except the exact point of time be given him . Besides , 5 thly . We find that those persons , who were born and conceived at the same moment of time , are found to have different Natures , Manners and Destinies : And that persons of both Sexes , of all Ages , and born under several Aspects of the Planets , and in different Countries , do perish at the same moment of time by Earthquakes , falling of Houses , taking of Cities or Shipwracks . 6 thly . I would demand of these Men that are for Influences , whether Discipline , Learning and Good Education , or Divine Providence it self have no influence upon the Manners of men , to oppose and countermine this force and efficacy of the Stars ? Probably it was for these , or the like reasons , that Astrologers , Magicians and Diviners , were by a most severe Edict of the Emperor Tiberius , banished out of Rome , and all Italy , according to the account Dion gives us , Lib. 57. III. Whence the Stars took their Names . Neither is it of any consideration in this case , that the Ancient Poets have put the names of Bears , Lions , Perseus , Hercules , &c. upon the Constellations ; forasmuch as this was not done by them , because they supposed them to have any particular influence upon Bears , Lions , &c. but only in commemoration of some strange and wonderful accidents , or to celebrate the memory of some of their Antient Heroes , and their Atchievements : In the same manner as GALILAEUS not long since , gave the name of the Medicaean Stars , to the secundary Planets by him discovered about Jupiter ; not because of any Medicinal Virtue he supposed to be in them , but in honour to the Great Duke of Tuscany , whose Name is de Medicis . IV. Many have had their Death foretold them by Astrologers , but without any certainty . Many have had the time of their death foretold to them : Thus SENECA makes mention of a certain person , who being told by an Astrologer , that his Death was at hand , went home , and 2 days after died . To which I answer , that this effect doth not prove the Truth of the Prediction ; for tho' a Prognostication be never so vain and ungrounded , yet it may strike such a fear into the person to whom it is declared , as may cause his Death to follow thereupon : For a person in this Case , finding himself altered and discomposed with the fright , he presently imagines , that this Illness is the sure forerunner runner of his Death , and so kills himself by the strength of his Imagination . How many have by this means hastned their own ends , and have died for fear of Death ? For it is not always the greatness of the Evil we suffer that troubles or torments us , but the conceit we have taken of it . Who doth not deride ARCHELAUS , who , according to what Seneca tells us of him , at the time when the Sun suffered an Eclipse , commanded his Palace to be shut up , and had is Sons Hair cut off ; which was never done but in sign and token of the extreamest Grief and Calamity ? Or who would not deride the superstition of the Thebans , who shouted , beat upon Brass Instruments , and rung Bells , to rescue the Moon , whom they supposed that some Witches were , by their Charms , about to pull down from her station in Heaven ? For people commonly are not so much troubled with things , as with the Opinions and Imaginations they have taken up concerning them . V. Various things seem to have been truly foretold by some Astrologers . But some will say , that at least it cannot be denied , but that P. Nigidius , the Astrologer , foretold to Augustus , that he should be Lord of the Earth , and the Successor of Julius Caesar . Scribonius declared concerning Tiberius , when he was yet an Infant , lying in his Cradle , that he should come to the Empire ; and after having overcome manifold difficulties , should be the Sovereign of the World. Largius Procilus determined the day of Domitians Death ; and Ascletarius fixt the manner of it ; who being thereupon demanded by the Emperour , whether he knew what kind of death he should die himself , answered that he should be torn to pieces by Dogs : Whereupon the Emperor to prove him a Lyar , and to expose the vanity and groundlesness of his Predictions , commanded him presently to be burnt ; which being put in Execution , as he was burning , a suddain storm of Rain falling , extinguish'd the Fire , whereupon the Dogs falling upon the half-burnt Body pulled it to pieces and devoured it . To all which I Answer , 1 st . That we have ground to question the Truth of many of these Relations ; not that I would make the veracity of all Historians doubtful , or suppose them to have inserted Lies , on set purpose into their Relations ; but because I conceive them to have been too apt to give credit to the Report and Talk of the Common People , especially about those Rumours that were spread abroad concerning the Birth or Death of their Kings and Emperors . 2 dly . It is a thing notorious beyond dispute , that many of them did by all means endeavour to please and flatter their Princes ; which they had no better way to do , than by inventing some things they knew would be grateful and acceptable to them ; as by shewing that they had been by GOD elected and appointed to the Government ; that they should be prosperous in their Reign , and enjoy long Life , and lasting felicity . But that I may not seem to be too injurious to Historians , let SENECA speak instead of me ; who living at the same time with them , was fully acquainted with their Manners and Temper . Neither , saith he , need we take much pains to invalidate the Authority of Ephorus : For , to say no more , he is an Historian : And how many are there of these , who hunt for praise , by relating of things strange and incredible ; and stir up their Readers Appetite ( who should they relate common and ordinary things only , would never think them worth the reading ) with some prodigy or miracle ? Some of them are credulous , others are negligent ; some of them are overtaken with Lies , others are pleased and delighted with them . Some do not take the care they ought , to avoid all falsities , and others desire them ; and this may be said in common of them all , who think their Work will never be approved of , or become Popular , except it have a sprinkling of Lies . And as for Ephorus , it is well enough known , that he is not a Writer of the most Religious Veracity , but that he is often deceived himself , and as oft deceives others . Indeed it may easily be proved , that many Historians , besides EPHORUS , have both deceived others , and been deceived themselves , in their Relations concerning Augustus . For seeing that Augustus could not be possest of the Empire , till after the Death of Caesar and Pompey , of whom the Chaldaeans had foretold , that they should die , not by violent Deaths , the one in the Senate , the other in Egypt , but in their own Houses , and full of Years and Glory ; how can we give credit to them , seeing they pronounce things contrary ? And whilst they stumble upon one Truth , pronounce many Lies , and are deceived in all the rest ? VI. How Ascletarion might foreknow Domitians Death . But they will further urge the instance of Ascletarion , who precisely told the manner of Domitians Death , and his own too ; Whence had he this , but from the Stars ? I will not here alledge the Opinion of several Authors , who have look'd upon this whole story of Ascletarion , as one of those Fables that run amongst the Vulgar . But shall only hint this one thing , that Ascletarion might foreknow the Death of Domitian , without any assistance from his skill in Astrology , and that by very certain and unerring signs . First . For that Tyrants are hated by all men , and that few of them die in their Beds . 2 dly . He knew that many did lie in wait for Domitian to kill him , and that he was every way surrounded with Enemies . But as to what he foretold of himself , that he should be torn to pieces by Dogs , this he could not foreknow , but by mear guessing at a venture ; and therefore it seems most probable , that this was only a fiction superadded by the Common People , to make the Story look more strange and wonderful ; seeing that the most skilfull Astrologers do not extend their Predictions beyond Death ; and therefore it is probable that Ascletarion supposed not that his dead Carkass should be devoured by Dogs , but that Domitian would have exposed it to be torn to pieces alive by Dogs , for a punishment of this Boldness , in foretelling his Death . And if so , it is apparent he was mistaken , and that the Predictions of Astrologers are vain and uncertain ; or if any thing they prognosticate comes to pass , it is only by chance and conjecture . Such were the foolish Prognostications of a certain Astrologer ▪ who from the condition of the weather on New-years-day , would determine the Fate and State of the whole following Year . But who is so sensless as to believe such stuff as this , or to amuse himself with groundless Conceits and Imaginations ? Book . 2. Part. 4. Chap. ● G. Freman Inv. I. Kip S● The Fourth Part OF THE HISTORY OF NATURE . OF EARTH , WATER , FIRE and AIR . CHAP. I. Of the Globe of Earth . I. Why the Earth , as containing the Water , is called a Terraqueous Globe . THE Earth , forasmuch as it contains in its Cavities the Waters , and together with them constitutes one Globe , is called the Terraqueous Globe . For when we take a Voyage by Sea , sailing in the Atlantick Ocean , and passing through the Magellan Straits , towards the South Sea , and so on to the East and Aethiopick Seas , we find that all these Seas are encompast with Shores. And in like manner , when we travel by Land , we shall find the Land bounded , on one side with the Atlantick and Aethiopick Seas , and on the other with the South Seas ; and again , this way with the Eastern and Arabian ; and that way with the Tartarian , Atlantick and Aethiopick Seas . II. The Earth is but a Point , compared with the vast extent of Heaven . Tho' the Earth be of that vast extent , that its compass is of about 7000 French Leagues ; or according to the later investigation of WILLOBRORDUS SNELLIUS , of 24624 Miles : Yet if we will believe Astronomers , it is no more than a Point , compared with the vast Circumference of Heaven . Neither is this Assertion of theirs without ground : For so great is the distance betwixt the Earth and the fixt Stars , that it cannot be certainly determined , as exceeding all Calculation ; and can scarcely be apprehended by our Imagination . The distance of the Planets may be discerned by their Parallax , or that variation of Aspect they afford to several Spectators in distant places ; but the Fixt Stars are at so prodigious a distance , that no Parallax is to be found in the beholding of them , and the Semidiameter of the Earth , with relation to them , is as nothing . So that if some one of us should be supposed to continue in the place of the Earth , whilst it was carried up towards Heaven ; there is no question , but at its first rising , it would shew like a vast Globe ; but as it mounted higher , would still decrease to our sight ; till being got up as high as Jupiter , it would appear no bigger than one of the lesser Stars ; and rising higher towards the Fixt Stars , would become invisible to us . And therefore the Earth which contains so many Seas , so many Kingdoms , so many Islands , yet is no more than a point , with respect to the Heavens . Yea , when compared to our Vortex , which hath the Sun in its Center , we shall find it so inconsiderable , that they who make Sundials , suppose the top of the Pins of them to be placed in the center of the Earth , whence they cast their shadows upon the surface of it ; as if the difference were so small , that it comes to the same thing , whether they cast their shadows from the Center , or the surface of it , the distance being so very inconsiderable in comparison to the Suns distance . III. How vain Men are , that make such pother and fighting about a silly point of Earth . This may give us an estimate of the folly of Men , who for one point of Earth , wage so many Bloody Wars , yea , for the 1000 th or 100000 th part of it . This forsooth , as PLINY saith , is the matter of our Glory . Here we enjoy our Honour ; here we exercise our Dominion ; here we have our Riches and Possessions ; here mankind continually Bustles , Toyls and Turmoyls it self ; here we wage Wars , and soak the Earth with one anothers Blood ; and our Swords destroy our own kind . But not to speak now of the publick feuds , and fury of whole Nations against each other : Here it is that we endeavour to lay one clod of Earth to anotherl ; and after having purchased all the poor pittances of our Neighbours about us , what a brave purchase have we made after all ? And what great Reason have we to boast in being Possessors of not so much as the thousand thousandth part of a point ? But this is to sing a Song to a Deaf-man ; return we therefore to our Earth . IV. How the Earth hangs pois'd in the Air , without any thing to support it . The Earth hangs in the midst of Heaven , without any Pillars to uphold it ; and , as if it were immoveable , doth ever keep the same distance from the Heavenly Orbs. This happens to the Earth , ●ot 〈…〉 Center of the Universe , as it is comm●nly su●posed , and that all the Celestial Orbs , are rolled about its Circumference : For should we grant this to be , yet would the difficulty still remain , why the Earth ▪ d●es not re●l from its pl●ce why it doth not e●ther mount upwards , o● fa● down . For if it be Heavy by Nature , how comes it to pass that it doth not rush downwards ? If it be Light , why does it not fly upwards ? Conclude we therefore , that the Earth doth hang pois'd in the mi●st of the A●r , by means o● the subtil matter , which cont●●u●lly whirls ro●nd 〈◊〉 and p●●reeth all the por●s o● it . For see●●g ●hat the Heavenly matter , which on all sides surrounds the Earth , is whirl'd about it with one and the same degree of Swiftness , which far exceeds that wherewith 〈◊〉 Eart● ●s moved ▪ it cann●t but hind●● 〈◊〉 from fa●●ing , or mounting highe● . For as ●ir●s are upheld by the Air from falling ; so the Earth and the Moon , wh●ch circ●●ate in th● same Vortex , are supported by the same Ma●ter that ca●●ies them along , and hindred from Reeling any way from their Centers . V. Why the Eart●● by its weight , doth not come nearer to the Sun. The Earth , notwithstanding its weight , yet is not driven to the Circumference of the Sun 's Vortex ; but being kept within its bounds by the Heavenly Globuli that surround it , continues at a certain distance , viz. in the midst , between Mars and Mercury , without passing any further . The Reason is , because the Planets , amongst which the Earth is , by reason of their different degrees of solidity , are more or less removed from the Center of their Vortex : So that Saturn , who is at the greatest distance from the Sun , is more solid than all the rest . And the Earth , tho' it seem to be a close and compact Body , yet is not of that solidity , as to sway it more towards the Circumference of its Vortex ; forasmuch as Mars , who is much less than the Earth , yet is also more solid , by reason of the closer entanglement of its parts . For tho' the Earth , as to its surface , be very compact and solid , yet with respect to its bulk , it may well be accounted light ; because the surface of it is not above 2 or 3 Mile in thickness , which is very inconsiderable , if compared to those vast Cavities it hides within its Bowels . And therefore as little Ships , such as have no great force , are easily kept in the River , and carried by its motion : So likewise the Earth , being fallen into the Vortex of the Sun , always keeps the same place , in which , by reason of its solidity it is ranged , and cannot be pusht any further towards the Circumference of the Sun 's Vortex . VI. The Magnetical virtue of the Earth , doth but weakly affect Iron . The Earth communicates a Magnetick force to Iron ; but the same is so weak , that it easily loseth it , and admits the contrary . Thus when we turn the End of a Bar of Iron , as yet not endued with any Magnetick virtue towards the Earth , immediately in that End which is inclin'd towards the Ground , it will obtain the force of the Southern Pole in these Northern parts , which in a moment it will lose again , and obtain the contrary ; if that End which was towards the Earth be turned upwards , and the other End inclined downwards . The Reason whereof is the weakness of the Magnetick ●or●● that is in the Earth : For seeing th●● the str●●t● Part●●les , which proceed from out of the Earth , do retur●●hi●●er again through the inner Crust o● its upper Region , whence the Metals are dug up , it so happens that very few , or none of them return through our Air ; those only ●●cepted , who do not find ▪ a Passage in the said i●●er Crust o●●● for them . Hence it i● th●● Load●●●nes , that h●v● fit pores f●● the reception of the said particles , have also a greater force to attract Iron ; because the striate Particles meet with pores in the Load-stone , which are ranged in like manner , as ●●e those of the in●er Crust of the Earth : Where●● , when they p●●s through the Air ▪ or throug● other Bodies of ●he outward Crust 〈◊〉 the Earth , where they find no such pores , they move wi●h more difficulty , and consequently also fewer of them come to us . VII . They who Travel from North to South , find the Northern parts to be withdrawn from their sights . Pe●son● that Travel from North to South , ●ind that the Northern parts of Heaven sink lower and lower , and by degrees withdraw from their sight ; but they who pass from So●●h to North , do find the Nor●●ern parts of Heaven to be ●●●sed higher ; so that after having Trav●lled 73 Italian miles in length , or 24 common French Leagues , the Northern Pole will be raised a Degree higher . This Experiment proves the Earth to be Round ; for if the Earth were plain , no such Change could be perceived . For tho' we should suppose a Man to be plac'd directly under the P●l● , yet would there be no change in the elev●●ion or height of the Pole ; for if he should wi●hdraw from it in a Right Line , the depression wi●● not be equal , nor after he hath Travelled onwards 73 Miles , would he find one Degree left behind , but the withdrawing will become still less and less , because of the continual decreasing of the Angle : So as that at last 73 Miles would scarcely make a depression of 1 minute of a Degree : Which is contrary to daily Experience . VIII . The Mountains do not hinder the Roundness of the Earth . The Roundness of the Earth is not hindred by those high Mountains that are found on the surface of it , many of which rise much higher than the Clouds , as Olympus , Athus , and the Peak of Teneriff . Because the Roundness that is attributed to the Earth is not Mathematical , as if the Lines drawn from the Center to its Circumference were all perfectly Equal ; but only Physical , that is , such a Roundness , as is suitable and convenient for the Universe ; forasmuch as these Inequalites are of so great moment , that they do not come into any consideration , when compar'd with the vast amplitude of the Body . For seeing that the Semidiameter of the Earth ▪ is of 860 miles , the proportion of the greatest height of the Mountains , to the Semidiameter of the Earth , will be as one 1 to 860. And forasmuch as there be but very few Mountains that are perpendicularly so high , and that the most of them are scarcely one Quarter of a Mile in Height , it is evident that they can no more spoil the Roundness of the Earth , than some small Unevennesses in the Round Balls made by Artificers , do hinder their being Round . For indeed , there is not a Body to be found in the whole Universe that is perfectly and absolutely Round , that is , which hath an exact Geometrical Roundity . IX . The Variation of the Altitude of the Pole , proves the Roundness of the Earth . This Physical Roundness of the Earth may be demonstrated by the following Experiment : When a Man travels North or South , he will find the Altitude or Elevation of the Pole to vary continually , whether he go a Plain-way , or Up-hill and Down-hill : So that if being at the Foot of a Mountain , and having observed the Elevation of the Pole , he Travel the whole day towards the South , he will not perceive the Elevation of the Pole to be increased , but rather decreased , by that time he comes to the top of the said Mountain . Neither will he in like manner find the same Altitude decreased , but diminished , if having taken the Elevation of the Pole at the top of the Mountain , he goes down again to the bottom of it . Which is an evident Proof , that the Devexity or bending downwards of the Earth , is every where perceptible , and that a perpendicular falling upon any different Points , whether of Acclivity or Declivity , do all tend downwards by different Lines , that will meet at last in the Center . CHAP. II. Of Water . I. Water is more hard to be congealed , than Oil. WE daily Experience , that Water is more difficultly congealed than Oil , and that it never is frozen without there be a vehement Cold in the Air : Whereas Oil is apt to congeal in any place , where the Air is only inclining to Cold. And , on the other hand , Water is sooner turned to Vapours than Oil , if they be both exposed to the Sun , or set over a Fire of the same heat . The Reason why Water is fluid , and doth not so easily congeal as Oil , is , because it hath smooth and slippery parts , like Eels ; which tho' they lye close , and be entangled together ; yet they never stick so close , but that they may be easily separated again . Whereas Oil consists of Parts which are easily entangled , and stick fast and close together : Which is the Reason why Oil is not so easily resolved into Vapours , as Water , the parts whereof , by the agitation of the subtil matter , are easily separable and hang but loose together . II. Why Water will not easily mix with Oil. From hence it appears also , why Oil , or Air , cannot , without great difficulty , be mingled with Water ; because their parts do more easily joyn together , than with the parts of this : For if you beat Water and Oil so long together in a Vessel , till they appear as one and the same Liquor ; yet cannot they continue so long , but that the parts of Oil meeting again with one another , will cling together , and form several Drops , which being carried to the top of the Water by their Lightness , will there continue , whilst the parts of the Water , at the same time , do likewise run together into Drops , and so by their weight fall down to the bottom of the Vessel . III. That Water is not Cold , as Aristotle would have it . From what hath been said , may likewise be gathered , that Water is not cold of its own Nature , according to ARISTOTLE's Opinion , seeing that it admits heat , and doth not let it go , but by imparting it to the Air , which is colder than it . We find also , that when a River freezeth , the Ice begins at the Top , that is , in that part which is touch'd by the cold Air : Which would not happen so , if the Water were cold of its own Nature ; for then it would begin to freez either in the midst , or at the bottom ; or at least would freez as soon in the midst , as at the top ; which yet is contrary to Experience . IV. Why Wine is frozen sooner than Water . And for the same Reason it is , that Wine is not so easily congealed as Water ; because in the Wine there be many subtil particles , easily moveable , and which are swiftly and readily agitated by the Celestial matter , which because of their subtilty are called Spirits . And therefore it is , that by how much stronger the Wine is , so much the harder it is to be frozen ; and that the Spirit of Wine , when freed from its Phlegm , doth elude all the extreamest force of Cold. And accordingly it hath been found by Experience , that if a Vessel of some Rich Wine be exposed to the Air , in extream Cold weather the watry part of the Wine will be frozen , and the Spirits will continue liquid and fluid in the Center of it . V. A Man under Water , doth not feel the weight of it . The weight of Water is not felt at the bottom of a River : Which is a thing experienced by Divers , who are not prest down by the water that lies upon their Heads ; but are as much at liberty for all that , as if they were in the free and open Air. The Reason whereof i● ▪ because no more of the water doth exert is gravity upon the Body , than would desoend , in case the Body did remove out of its place . For suppose we a Man placed at the bottom of the Vessel B , and lying in such a manner with his Body on the Hole A , as to hinder the water from running out of the Vessel , he will find that the whole weight of the Cylinder of water ABC doth lye upon him , the Basis whereof I suppose to be of the same bigness with the Hole A ; who , if he himself should pass down through the Hole , the whole Cylinder of water would descend likewise ; but if we should suppose the man placed somewhat higher at B , so as not to hinder the Eg●ess of the water at A , then would he no longer perceive any weight of the water which lies upon him between B and C ; because if he should sink down towards A , yet the water would not fall down with him ; but on the contrary , that part of the water which lies under him towards A , to the same bulk as his Body is , would come up into his place : Whence it appears , that the water rather carries him upwards , than bears him down , as may be proved by the Example and Experience of Divers . For which Reason also it is , that they cannot reach the bottom of the Sea , without some weight hung at their Feet . VI. Things weighed , that are found to be of equal poise in the Air , do lose the same when weighed in the Water . For the same Reason it is , that Bodies which being weighed in the Air , are found to be of Equal weight , do lose the same equality when they are weighed in the water . Thus when Lead and Copper being weighed in the Air , are found of equal weight , if they he weighed under water , they lose the same : Because the Lead takes up less place in the water , than Copper of the same weight does ; and therefore in water it must needs preponderate , tho' in the Air it was of equal poise with the Copper . VII . How water comes to putrefie or corrupt . Water , if it stands still without motion for a while , or if it be kept close in a Vessel , doth putrefie and stink . The Reason is , because tho' some small quantity of Salt and Sulphur be found in water ; yet , because upon its standing still , they become loosed from the union they had with the parts of the water , and run together , they consequently do easily evaporate , and thereby cause Putrefaction . Whereas , as long as the Water continues in motion , the particles of the Salt and Sulphur , are mixed with those of the water , and by this means become entangled , and are hindred from flying away , and leaving the water destitute of that which doth preserve it from Putrefaction . VIII . Why the Water sinks , or riseth higher in a Vessel . Water contain'd in a Glass-Vessel or Tube , without filling it to the top , appears lower in the midst , than at the Sides or Edges . Whereas , on the contrary , if the said Vessel be fill'd to the very top , it will appear swell'd and higher at the top , and inclining to a Spherical figure . The Reason is , because the Air presseth down the middle part of the water on every side , in a Vessel that is not quite full ; whereas it only presseth the outsides of it more obliquely . But when the Vessel is full of water , besides that the water is more firmly closed in the Vessel , its middle parts are only drawn together by the Air that lies above them ; whereas the Extream parts are comprest , as well by the Air that is above them , as by that which is on the Edge or Brim of it . IX . What is the Cause of the Roundness we find in the Drops of Water . The Drops or Bubbles that are seen in water , are Round ; but as soon as they touch others , they unite , and are confounded with them . The Reason of their Roundness , is the equal pressure of the ambient or enclosed Air. For a Drop of water , being , as it were , pois'd on its point of Contact , is equally prest on all sides by the Circum-ambient Air. And as soon as it toucheth another Drop , because the pression in the place of Contact is thereby weakned , it presently becomes joyned with it . And therefore it is , that those hanging Drops , which are , as it were , supported every where , and surrounded by the Air that doth encompass them , are driven that way , where there is no Compression ; that is , towards that part where they rest upon solid Bodies . And if you touch a hanging Drop , at the lower part of it , it immediately follows ; because the Air doth not press at the point where it touches a solid Body . X. Whether the same Roundness is not observed in the Drops of Spirit of Wine . But the Drops of Spirit of Wine are never Round ; for seeing that this Spirit is very light , it consequently abounds with so many Pores , and its surface is so much interrupted , that but few parts of the Air can apply themselves to it , in order to their compressing of it into a Round figure , seeing that the most of them run through it , endeavouring the destruction of it . And therefore if this Liquor be poured down from on high , it doth not fall down in Drops like water , especially if it be highly rectified , but is immediately dissipated in the Air , that no sensible part of it comes to the Ground : Or , if it be pour'd on a Table , cover'd with Dust , it doth not turn into round Drops , but spreads it self every way , and mingles it self with all the Bodies it meets with . XI . Whether Water may be made of Air. Air is sometimes condensed into water : Which we see in the production of Fountains , the Cause whereof the Ancients very probably assign'd to be , the changing of the Air into Water ; which change is facilitated by the rest or stagnation of the Air in those parts , and by the coldness of the Rocks . For it is found by Experience , that Fountains are most commonly generated in such places as these . The Maintainers of this Opinion do very well to add the word , Probably , seeing there be several that utterly deny this , and prove the contrary by Experiment . A Modern Person , and great searcher into the Nature of things , took a Glass-Vessel with a long Neck , containing a Quart , and sealed it Hermetically ; which Vessel , wherein was contained nothing but Air , he plac'd in a Barrel full of water , and left it there the space of 3 years , and never removed it thence all that time , save only to observe , whether any change had hapned to the Air ; but he never could perceive the least alteration , or that any part of the Air was changed into Water ; which according to the former Supposition ought to have hapned , because of the moist and cold water , wherewith the Air was surrounded on every side . Which proves them to have been mistaken , who supposed that that which was sufficient to turn Water into Ice , would also turn Air into Water : Since this change could not be brought about , by means of cold and moisture , in the time of 3 years . And the Reason of it is plainly this , because the particles of the Air being very subtil , are so continually agitated by the motion of the subtil matter , that they always are tost through one another , and therefore can never be turned into Water , no not by means of the most intense Cold. XII . Why a Rope being sprinkled with water becomes shorter . A Rope , or Cord , if it be sprinkled with water , so that it sink through it , becomes contracted , and is not so long as it was before . The Reason is , because the several Threds , whereof the Rope is composed , are as it were so many Pipes , which are blown up by the letting in of water into them , and so become shorter . Hence it is that the Strings of a Lute break in moist and wet weather , if they be wound up too high : For that the Threds of them , turning round like a Screw about other greater Cylinders , do by this means become contracted , and lose something of their length . XIII . In what sense Water is said to be insipid . All Water , but more especially Rain-water , is insipid , and hath either no taste at all , or such as is hardly perceptible . Tho' , to speak exactly , there be no Bodies in this Universe that are altogether insipid ; yet are some so called , because they are not endued with any eminent or very perceptible Taste ; such as are some cold and waterish Herbs , the Raw white of an Egg , and Common water ; because their particles have smooth surfaces , which do not enter the pores of the Tongue , nor can vellicate or twitch , but only glide over it . Thus Air is look'd upon to be insipid , because it swims upon our Spittle , and not mingling with it , makes no impression at all upon the Nerves . And for the same Reason it is , that fat Liquors do relish less less than others . XIV . In Order to the filtring of any Liquor by a slip of Cloth , the Cloth must first be moistned . Filtration cannot be performed , but with a piece of Cloth , that is throughly made wet with water : Or , if you will , Water will not ascend by a Label of Linnen or Woollen cloth , nor run down by that part which reaches down on the outside of the Vessel , except this part be first throughly made wet : For if the propendent part continues dry , the filtration can never proceed . The Reason is , because in filtration , the outward parts of the water , wherewith the cloath is wetted , do so insinuate themselves into the Threds of it , that they produce there a kind of thin skin , through which the inner parts of the water , which are in continual agitation , run downwards , and are carried towards that part of the Cloth which hangs down without the Vessel . Whereas , when any part of the Cloth continues dry , and unextended by any Liquior , so long this Pipe cannot be compleated , which is necessary for the conveying of the water ; and therefore it is necessary that the whole Cloth be moistned . For we must not imagine , that the part of Cloth which hangs down without , becomes moistned , because the water that is contained in the Vessel is driven upwards , for this would be contrary to Nature ; but the reason of it is this , because that part of the filter being dipt in the water , its Pores are thereby widened , and so prepared to admit more water , which by degrees entring more copiously into the same , doth still more widen the parts , and so continually makes way for the following Liquor to ascend . XV. Why the water ascends in a Pipe fill'd with Sand. After the same manner as Liquors mount up by filters , so likewise doth water ascend in a Pipe full of Sand , placed perpendicularly in a Vessel full of water , and whose bottom or lower end , is stopt with such a Body through which the water can penetrate . For if we leave this Pipe thus , the time of 24 hours , we shall find the water to be mounted up in the Pipe through the Sand , about 18 inches high above the Level of the water , that is in the Vessel . XVI . Why the water that is at the bottom of Rivers runs more slowly than that which is at the top . Those that Swim take notice , that the water of Rivers doth not every where flow alike , and that the stream of the River runs more slowly at the bottom , than at the top . It is not so in all Rivers , but only in such whose bottom or channel is uneven , and hath deep holes in it ; for where all the parts of a Channel are level , there is no reason why the course of the River should be more slow at the bottom than at the top . Conclude we therefore , that this happens in such Rivers only when the bottom is interrupted with deep holes , where the water is detained longer , than it would be on a level , and consequently doth not move so swiftly as the Surface . XVII . Why the water only runs down Hill. Hence it is evident that water always takes its course that way , where it finds a down-hill ; for seeing that the upper parts of the water , do by their weight press those that are under them ; and that they by reason of their fluidity , except they be kept in on the sides , do spread and slip away ; it must needs be that when the water is upon a hanging ground , and its lower parts prest by the upper , it must give way and run downwards , to avoid that pressure . For a down-hill ground , is more open than a plain or level , for seeing it is nothing else , but a range of perpendiculars the one shorter than the other it , cannot be otherwise , but that the water that lies upon a shelving ground , upon its being prest must slide down , towards the shorter perpendicular . So that it is manifest that no water flows upon the Earth , but what moves down-hill , by reason of the shorter perpendicular . XVIII . Water containded in a Vessel of unequal thickness it not driven forwards by a greater bulk of water . Let a Glass Vessel be made , with a narrow Arm , and fill'd with water : The water which is in the Vessel , will not be able to thrust the small quantity of water , which is in the Arm out of its place , nor lift it up higher , tho' it be in much greater quantity , and exceed it in weight . This effect is to be attributed to the Heavenly matter , which is most swiftly carried round the Earth , and drives all Earthly Bodies towards the Center of their motion . For seeing that the water , which is in the Vessel , and that in the Arm of it have an equal Surface , they are consequently alike pressed downwards by the Heavenly matter ; and therefore that great quantity of water which is in that large Vessel , hath no power to push the little water that is in the Arm out of its place , or to raise it higher . XIX . Why a Needle Swims on the top of the water . The Surface of the water is more difficultly divided , than the more inward parts of it : For little Steel needles , being laid crossways on the Surface of the water swim upon it , but as soon as they have divided the top of it , do without stop sink to the bottom . The Reason is , because tho' the parts of the water be uniformly moved , and constitute a smooth and even Surface ; yet the parts of the Air , that surround the water , are agitated after a different manner , without any such uniformity in their Motion ; by which means it comes to pass , that the Surfaces of Air and Water become smooth and polished ; as we see that rough Bodies are polished by rubbing against each other . Now it is apparent that smooth Bodies are more apt to resist , and exert a greater force in putting by other Bodies . And therefore it cannot seem strange , seeing that the Surface of water is more difficultly divided , than it s under parts , that it should support Steel needles laid upon it . Yet to this end , the Needle must be very slender , and must be laid a thwart upon the water , for otherwise the effect would not follow . XX. The sharper the Keel of any Ship is the more water is draws . From what hath been said may be gathered , why a Ship with a sharp Keel , doth draw more water , and better cuts the waves , than that which hath a broader . For a Ship pusheth and takes up so much water , as its weight is , and all it contains , that so the water may be prest equally on all sides . Now the sharper the Keel is , with so much the lesser compass it doth beat back and push against the water , and doth more easily divide it , than when it is broader ; for then it draws but little water , and pusheth away a greater quantity of it . And therefore it is , that the Foundations of the Arches of a Bridge are made sharp pointed towards the water , that it may slantingly slide by without exerting its force upon them . CHAP. III. Of the wonderful Properties of some sorts of Waters . I. Of the cause of hot Waters or Baths . SOme Waters are hot when they break out of the Ground ; yea there are some Springs that are so hot , as to boil an Egg hard that is put into them . Some derive this heat that is found in hot Baths from Subterraneous Fires , which lye hid in the Bowels of the Earth , and are diffused up and down through it by certain Channels , which as the water passeth through , it becomes heated . But this doth not seem agreeable to Reason ; for whence are these Subterraneous Fires fed and maintained , where is their Fewel , or how can the same be kindled into a flame under ground ? Or how comes it to pass that these Fires are not choaked by the smoak that proceeds from them ? Or why do not they dilate themselves , and breaking out at the Surface devour all before them ? It seems therefore more probable , that this heat of some waters is the effect of a mixture of Liquors , proper to produce that quality ; as we find that water poured upon quick Lime grows hot ; and the same effect ariseth from the mixture of Oyl of Tartar , with Oyl of Vitriol ; and Butter of Antimony , with Spirit of Niter : Which tho' singly they be cold Liquors , yet when put together , produce a very intense heat ; for if Oyl of Tartar be poured into Aquafortis wherein Iron is dissolved , it will not only work and boil , but break forth into a Flame . Conclude we therefore , that the heat of Baths proceeds from a mixture of Jews Lime and Brimstone , which being united together produce heat by effervescence . II. The heat of Baths , doth not proceed from subterraneous Fires . That this is so , may be evidently proved from hence , that the water of hot Baths being set upon the Fire , is as long a boiling as any other cold water : Neither doth it scortch and burn the Tongue as common water doth , which hath acquired a like degree of heat from our Culinary Fire ; which shews that the Subject of this heat is a thin Vapour , which doth not so much penetrate the parts of the Tongue and Mouth . It is found likewise that this water , doth not boil and make tender , soft and juicy Herbs that are put into it , such as Sorrel , &c. as soon as common water , that hath the same degree of heat . The reason whereof seems to be , because the Volatile Sulphurs , that produce the heat in these waters , do so insinuate themselves into the Pores of the Mouth , or of the Leaves of Sorrel , that they hinder the water from entring into them ; or because the heat of these waters doth wholly consist in these Sulphurs , the parts whereof are so Subtile , that they cannot exert their force , neither upon the Mouth , nor upon the Leaves of Sorrel ; for the very same reason that the flame of Spirit of Wine , will not burn a Handkerchief that hath been dipt in it . III. Corrosive Spirits do dissolve Metals , and rather act upon hard than soft Bodies . Corrosive Spirits , or Stygian waters , as the Chymists call them , do penetrate the hardest of Metals , and in a short time do dissolve them ; but act little or nothing at all upon Wax which is soft , but leave it in a manner untoucht . The said waters do also more easily dissolve Iron and Steel , than Lead , which is softer than they , and more easily divisible . The reason is , because these Corrosive Spirits do not meddle with those Bodies that give way to them , but crumble them to pieces that oppose and resist their entrance . Which will be easily apprehended by those who know that all Bodies , do not consist of the same parts , nor have their parts joyned in one and the same manner , but suitable to the variety of their Bulk and Figures . For as a heap of Earthen Vessels , may with a Stick be broken into a Thousand pieces , whereas Wool being struck with the same Stick and force , doth admit no change at all ; and as Wool may be easily cut with the edge of Knives and Scissars , whereas Earthen Vessels cannot ; so we may easily understand ▪ how some Bodies are easily dissolved by Corrosive Spirits , whereas others are scarcely toucht by them . IV. A Fountain of Epirus extinguisheth flaming Torches , and kindles those which are extinguisht ▪ Historians tell us of a River in Epirus , producing contrary effects . In DODONA , saith PLINY , Is a Fountain dedicated to Jupiter , which tho' it be cold and doth extinguish the lighted Torches that are put into it , yet doth it kindle those which are extinguisht when approacht to it . This seems at first sight impossible , that inflammation should proceed from a cold Body as the water is : Yet for the clearing of this difficulty we may say , that the water of this Fountain being cold , does extinguish a flaming Torch that is dipt into it , this being the property of water to quench and choak Fire , and so put a stop to the motion of its agitated parts ; but the rekindling of extinguisht Torches , cannot be attributed to the water , but to the Bituminous and Sulphurous ▪ exhalations , that rise up from the water . For it is probable , that this Fountain did send forth Vapours mixt of Jews-Lime , Brimstone and Nitre , which rising up through the Fountain as through a Chimny , became inflammable in the open Air , especially when a newly extinguisht Torch was approacht to them . V. The cause of the Interruption of the flowing of the Collismartian Fountain . GASSENDUS upon occasion of a Fountain mentioned by PLINY , which Flows and Ebbs thrice a day , mentions the Collismartian Fountain , which Ebbs and Flows 8 times in an hour ; for the water being ready to break forth , discovers it self by a soft purling noise , and for about half a minutes time swells and encreaseth , and the 6 following minutes decreaseth again ; and when the decrease is ceased , the water continues in the same state for a little while , and then begins to flow again . But the intervals between one Eruption and another , are not equal , being sometimes more , and at other times less ; tho' it very seldom happens , but that in one hour 8 flowings or Eruptions , and as many Cessations or Ebbings may be perceived in an hour . It is certainly a difficult matter to render a satisfactory reason of this interrupted flowing of the water ; neither will the instance of the Fountain in Epirus , be of any great help to us towards the solving of it . For whereas the same abounds with water in the day time , which fails and ceaseth in the night , this may be attributed to the heat of the Sun , whereby Fountains in Summer-time are often dried up , and overflow in the Winter . But this cant be applied to the Collismartian Fountain , which observes its interrupted Ebbings and Flowings in the night , as well as in the day time . However , if I may speak my conjecture concerning so abstruse a Riddle in Nature , I am apt to believe , that within the Hill whence this Spring breaks forth , there is some hollow , or pit , which a Rivulet continually fills up : As likewise a passage through which some subterranean steam , or breeze continually blows , and keeps back the water , sending it back to the place opposite to that from whence it came ; where it then swells and encreaseth , till being overcome by its own weight , it overbears the force of the Wind , and so runs down , until the hollow or pit be almost exhausted and remain dry . And after this the Wind having recovered its free passage again , doth as before withold the waters that would run out , and continually drives it back , until by force of the water that breaks in , it be driven away again , and give way to it . VI. Another like River . A like Fountain to this is mentioned by F. MAIGNAM TOLOSAS in his Horary Perspective , which in Summer time doth every hour flow from a vast , and most deep hollow , and for a quarter of an hour encreaseth bydegrees , with a very great noise ; and the next quarter becomes a great River ; the following quarter it sinks again , and the last quarter , lies still , and is in a manner quite dry'd up . VII . What is the cause of poisonous or deadly Fountains . Some Fountains are Poisonous and deadly , as was that famous one of Terracina , which was called Neptunes , in the Country of the Volsci , which was the death of all those that drunk of it , and therefore was stopt up with Stones , by the Inhabitants . This may be occasioned when the waters of such Springs run through Arsenical , Mercurial or Antimonial Mines . For as the Fumes of Arsenick do kill living Creatures , so waters impregnated with the said steam , produce the same effect . Of this kind is the Lake Asphaltites , because of the Arsenical Jews-Lime it abounds with ; and many other Fountains that are found in the Countries about the Alps ; but as soon as they are discovered they are filled up and stopt with Stones , which is the reason why so few of these deadly Springs are known . VIII . Whether it be true that the Fountain of Jupiter Ammon was cold and hot by turns . In the Povince of Cyrene , as Historians tell us , was a Fountain of the Sun , which was hot at Midnight , and afterwards growing luke warm by degrees , was cold at the breaking of day ; and as the Sun rose higher , grew still more cold , so that at Noon it was cold to extremity ; and from that time began by little and litle to grow luke warm again , till at the beginning of night it was hot , and so grew hotter and hotter till Midnight . Some Philosophers have endeavoured to give a reason of this change , by asserting that there are some Seeds of heat in water , which the Earth , when chill'd and contracted with the coldness of the night sends forth , but when dilated by the heat of the day , doth take in again . But I fear that in this case , we are vainly employed in searching for a true cause of a meer figment ; seeing that ARRIAN , CURTIUS , PLINIUS , MELA and other Historians and Geographers , who give the description of this Fountain , did never see it , and had only by report whatsoever they relate concerning it . Every body knows how basely the Priests of Jupiter Ammon did flatter Alexander , when he visited that Temple , and therefore we cannot think strange if they made him believe many things , which they feigned , or by some imposture represented to him , to make him conceive a greater veneration for the place and them . And therefore I think it is but reasonable that we should be fully assured of the truth of the thing , before we trouble our selves about searching out the cause of it . IX . What is the reason of the heat that is found in Well water in the Winter season . Well water in Summer is cold , and in the Winter hot , or at least somewhat luke warm . This cold and heat doth not proceed so much from the water , as from our Sense , which finds the water colder in Summer than Winter . For when we touch any thing with a very cold Hand , it appears warm to us ; as those things feel cold , which we touch with a hot Hand . This we experience when we enter into hot Baths , which are distinguisht by several Degrees of heat ; for when we are enter'd into the first Bath , we think it warm , because our Body is yet cold , but when we return again from the hottest Baths to the first where we entred , we take that to be cold then , and not hot as we thought it was at our first entrance into it . And the same is the case of Grottos and Caverns , which always are of the same temperature , but are thought to be cold , because in the Summer we come into them out of the hot Air , in comparison of which they seem cold to us : And in the Winter seem hot , because the External Air is much colder , than those Grottos or Caves are , with respect to which we think them warm . As before hath been shewed by the Example of Oil. X. The steam that lies upon the water doth not communicate any heat to it . We must not conceit , as some Peripateticks do , that the steam which in the Winter time appears upon Well water , doth impart any heat to them , because that steam when felt by the Hand , will be found as cold , as the Air that surrounds it : Whereas the water it self will be found to be hot ; which is a sufficient proof , that the water borrows no heat from the steam that lies upon it . Moreover we find as much steam lying upon the surface of hot Baths , as upon Well-water , and yet no body will say , that this heat which is in those hot Baths , proceeds from the said steam or vapor , seeing that it scarcely covers the water , and disappears in a Moment . The reason therefore why Well-water in Winter time seems to be hot to us , is , because we come to it from the External Air , which is many Degrees colder . XI . Of Springs that make the Persons that Drink of them , Drunk , and others that make the Drinkers to run Mad. The water of some Springs does inebriate like Wine or other strong Drink , and this effect is attributed to the River Lethe , which being drunk of too freely , does produce the same effect as , Wine does . Others again being drunk cause Madness , or Dull stupidity . The cause whereof must be ascribed , to the Jews-lime wherewith those waters do abound . For Jews-lime , doth strongly affect the Brain , and by obstructing the Pores of the Nerves , doth dull and stupifie the Senses ; much in the same manner as the seeds of wild Parsneps , ( as AGRICOLA tells us in his 2d Book of things flowing out of the Earth ) being wrapt in a thin Linnen , and put in Wine do ; as also the powder of the Flowers of Hermodactils , which being put into Wine , do presently , and strongly inebriate . And thus Jews-lime being mixt with water , doth inebriate those that Drink of it , and makes the Body heavy and lumpish . XII . A Fountain that makes the Drinkers of it to hate Wine . We are told of a Fountain in Arcadia , near the City Clitor , and from thence called Clitorius , which makes those that Drink of it to have an aversion for Wine , as Ovid assures us . Who with Clitorian Streams his Thirst allays , Doth Wine abhor , and water Drinks always . The Reason is , because , as Wine doth cause a nauseousness , not only to those that are drunk , but also after that they are grown sober ; so those who drink of those Fountains , impregnated with Jews-Lime , and having had their Heads clouded and troubled thereby , become affected after the same manner as those who are sick of an Ague , and abhor VVine and the smell of it . XIII . Some Diseases are cured by Medicinal Waters . Some VVaters are endued with a Medicinal Virtue , and are made use of by Physicians for the curing of several Diseases . The waters derive this their virtue , from some Metalline or Mineral Matter which they pass through , as Brimstone , Salt , Vitriol , Alome , Nitre and Jews-Lime . And hence proceeds that great variety which we find in VVaters ; for Sulphurous VVaters do heat and attenuate ▪ Bituminous do dull and cloud the Brain ; Aluminous do dry moist and running Sores ; and Vitriolick do adstringe . Some of them are immediately conveyed to the Bladder and Urinary passages , by opening and dilating the pores that make way for the said water to pass to those parts . XIV . Of pretended Miraculous Fountains . As to those Fountains , of which many Miraculous Effects are reported , we may take it for granted , that their highly extolled Virtues are commonly grounded upon the reports of some poor People , who are many times set on by others , for Mony , to tell many Lies concerning the Miraculous Effects they have performed . For whatever some may talk , there is no Universal Remedy , or such as is able to cope with , and overcome all Diseases . And seeing that great numbers of People do drink , or otherways make use of these Miraculous Fountains ; those that suppose themselves to have been benefited by them , do extol them ; when in the mean time we hear nothing of those to whom they have been of no use at all . CHAP. IV. Of Fountains and Rivers . I. How Fountains come to spring on the top of Mountains . NOthing is more frequent , than to see Springs break forth from the Bowels of the Earth , and mounting upwards , contrary to the natural weight of Waters , to make their way through the tops of Mountains . Different Reasons are given by several Men of this Eruption of Fountains . Some suppose that the subterranean waters do mount upwards through certain Pipes or Channels , much in the same manner as the Blood in the Body of an Animal is conveyed through the Veins to all the parts of it , to the Head , as well as to the Feet . This Opinion PLINY seems to favour in his 2 d Book , Chap. 65. For seeing that the Earth is dry and thirsty , and cannot consist of it self without Moisture ; nor the Water neither without the Earth , supporting and containing of it ; it seems necessary that we admit some Veins , through which the Water may be conveyed , and get up to the tops of the Mountains . But yet it does not seem probable that the water should be this way conveyed in the Earth , as Blood is in the Body of an Animal : For tho' the water be driven out of the Sea into the subterranean cavities , and by this force imprest upon it , do continue to mount upwards ; yet no sufficient Reason can be given , why the water , by that time it is risen as high as the surface of the Sea , should not stand still there , or fall back again , seeing that the force wherewith it was pusht upwards , now ceaseth . Whereupon it seems more likely , that the original of Fountains ought to be ascribed to Vapours , or particles of Water , separated from each other by the force of subterraneous heat . For seeing that under Plains and Mountains great Cavities lie hid , that are filled with water , it cannot be questioned but that a great part of them are continually resolved into Vapours , and sublim'd to the surface of the Earth , and the tops of the highest Mountains ; which by succeeding Cold being afterwards turn'd into water again , cannot return back the same way by which they mounted , and therefore find out other open passages between the Intervals of the Crusts or Shells whereof the Earths surface doth consist . II. Why some Springs flow equally at all times ▪ and others not . Some Fountains flow continually , and much with the same force , and abundance of waters ; whereas others are subject to a great decrease in Summer and Autumn , and some do wholly dry up . The reason of this decrease in some Springs is , because the pores of the Earth are very open during those Seasons of the Year , by reason of the Heat that dilates them ; and by this means furnish the Vapours a ready and open way to fly away , and mingle with the Air , and therefore can no more supply the Spring with water , as they did whilst they continued shut up within the Earth . And it sometimes happens , that this Evaporation is so great , as to dry up the Spring altogether . But as to those Springs , that flow continually , and much with an equal force , the reason of their perpetuity is , because the Channels by which their waters are conveyed , are so deeply lodged in the Earth , the Summers Heat cannot reach them to dilate their Pores : which is the reason why the Vapours , being always furnish'd in the same quantity , must also produce an equal and continual springing , or flowing of the water . III. How Fountains of Oyl are generated . Hence it is also , that in some hollow parts of the Earth , Oyl breaks forth instead of water , viz. when the Heat , that is in the Bowels of the Earth , is of force enough to lift up thick and gross Exhalations ; which meeting with the cold parts of the Mountain , become thereby condensed , and joining together , constitute a thick Liquor , very like Oyl . Thus we are told of a Valley in Alsatia , called Leberthal , from whence there breaks forth a fat and thick Liquor , which Waggoners make use of to grease their Wheels . In Scotland also , 2 miles from Edinburg , there is a Spring , the surface whereof is covered with a Black Oyl , which the Inhabitants make use of to soften their Skins , and to heal the Chops and Roughness of it . So likewise amongst the Antients , the River Liparis , in Cilicia , was very famous , because those that bathed themselves in it , were as good as anointed with the water of it , which was so soft and Oily . But such Springs as these are very rare , forasmuch as thick exhalations do arise with much more difficulty than watry vapours , and stand in need of a great degree of heat to raise them to the surface of the Earth . Book . 2. Part. 4. Chap. 4 ▪ G. Freman ▪ Inv. I. Kip Sculp To the Right Worshipfull Sr. Basil Firebrace Knight , Alderman and Sheriff of the Citty of London Anno Domini j688 . This Plate is humbly Dedicated by Richard Blome . Spring-water is generally fresh , without retaining ought of the saltness of the Sea , whence it is derived . The Reason is , because the fresh particles of the Sea-water are most proper for sublimation , as being both thin and limber ; whereas the saline particles , being stiff and hard , cannot be changed into vapours , nor pass through the crooked and winding pores of the Earth . Fountains therefore are fresh , because they consist only of those parts of the water that have been strained through the narrow pores and windings of the Earth ▪ or that have been sublimed into Vapours by the force of Heat . V. The Original of Salt Fountains . There are some Salt Fountains in France , as near Caen and Bordeaux , besides several here in England ; and a great many almost every where upon the Coast of Africa ; in the East Indies , near Cormandel , almost all the Wells are Salt. So likewise in the Island of St. Vincent , many of these Salt Springs are found : and on the Shoars of Peru , several Salt Lakes . Besides all these waters which had their original , either from an inundation of the Sea , or by some inlet from the Sea ; such is that Lake in Holland , commonly called Haerlem-Meer . There is also a Salt Lake in the Island of Madagascar , and in that of Cuba , which is 2 Leagues in compass , and is not far distant from the Sea. Now the cause of these Springs and Lakes is , because the passages of the Earth , through which their water is conveyed , are very large and open , so that very few or none of their Saline Particles can be strained from them ; or else because their waters pass through some Saline Veins , and so become impregnated with Salt. VI. Why some Springs abound with water in the Winter , and in Summer are dried up . Some Springs run copiously all the Winter long , but during the heats of Summer , their waters fail and run no longer . Such Fountains as these , owe their Rise to Rain and Snow , which supply them with their current . For there are many great Caverns under the Earth , and especially under high Hills and Mountains ; which being fill'd with Rain and Snow-water , do , according to their largeness , in a longer or shorter time , exonerate themselves . And thus we find , that after long and contiued Rains , new Springs are seen to break forth ; which upon great and long continued Heat and Drought , are dried up again , until the said Caverns be supplied again , and filled by frequent Showers , or the melting of Snow , and so begin to run as before . Thus we read , that in the time of Elias the Prophet , the Springs were all dryed up ; for the Doors of Heaven being shut up , neither Rain nor Snow fell down upon the Earth , to supply the continual expence of the said Springs . VII . Why Rivers cannot run but on a shelving ground . All Rivers have their Current from a shelving ground , and where they lie upon a perfect level , they continue unmoveable . The Reason is , as before hath been hinted , because those parts of the water that are uppermost , do by their weight press those that lie under them ; which being fluid , and readily giving way , slide downwards , where they have more room to spread themselves , and are not so much straitned . For a shelving ground , or down-hill , is , as it were a continued Range of Perpendicular Lines , in which the water cannot be pressed , but it must fall upon the bottom of the shorter perpendicular . For if the Channel , along which the Rivers run , were not shelving , no reason could be assigned , why they should run this way , more than that way ; more towards the East , than towards the VVest . Moreover , the Sea , when it swells with the Tide , would be of an equal altitude in the Rivers , in case they did run along an Horizontal Plain , and not along a shelving ground . VIII . From the Course of Rivers , we know the Altitude of Places . Thus from the Springs and Current of Rivers , we know that some parts of the Earth are lower than others . Forasmuch as that part of the Earth , to which the water flows , is lower than from whence it flows . Hence it is that we know Bohemia to be higher than Holstein , from the Current of the Elbe . And thus likewise from the Danube , Visurgis , the Rhine , the Maes , &c. we take our Judgment of the Altitude of the several places through which the said Rivers pass . Thus Switzerland and the Country of the Grizons , are counted by some to be the highest ground of Europe , because the Rhine , the Rhone and the Danube proceed from them . Now as great as is the Down-hill of these Rivers , so great is the altitude of the Mediterranean places , above those on the Sea-coasts . IX . What is the reason of the swift current of Rivers . And the greater the Down-hill or Declivity of the Channels of Rivers is , the swifter is their Current ; and the less it is , the slower is their Course . And the same thing is the reason ▪ why one and the same River , runs more swiftly in one part of its Course than in another , which is observable in many places of the River Rhine . For if the bottom of a River , within the compass of 200 paces , lean down one pace , the water runs so swiftly , that it cannot be navigated without danger . In those places therefore where there are Cataracts , or Downfulls of Water , there the Rivers run with the greatest swiftness . And therefore it is that Brooks run with that violence , because they are precipitated from the tops of Mountains . X. Whether the Course of Rivers be always towards the West . All great Rivers flow towards the West , and none of them towards the East . This hath been generally believed , but without sufficient ground ; seeing it is evident , that the Rhine , the Nile and Ob flow towards the North ; the Rhone , and the River Indus , towards the South ; the Danube , the River of the Amazons , and that of St. Laurence , towards the East . Whence we conclude , that Rivers do not tend to one particular part of the World , but are indifferently carried to any part of it . XI . How it comes to pass that fresh water sometimes springs in the midst of the Sea. It is sometimes found that fresh water springs in the Sea , tho' not far from the Shoar . Yea , some Historians assure us , that in the Province of Jucatan , in America , a vein of fresh water springs a cubit high , above the surface of the Sea. The reason whereof is , because the Receptacles of water that are in the neighbouring Mountains , have their vents or out-lets so disposed , as not to tend upwards towards the top of those Mountains , but downwards : So that the waters flowing out from them , do meet together with a large Channel , where they constitute a Spring or Fountain ; and therefore must needs break forth in some low place , that is , from the bottom of the Sea ; and because their eruption is forcible , they spring sometime above the surface of the Sea-water . The reason why some Rivers , running into the Sea , do for a great way retain their freshness is , because their Current is so swift and violent , that they push back the Sea-water , and keep it from mingling with them , till at last , by a longer process , their force being weakned , they mingle with the Salt-water , and are lost in it . XII . The Cause of the constant Inundation of the River Nile , after the Summer Solstice . The River Nile , which is but 18 foot deep , doth sometimes swell to the height of 18 Cubits , that is , 27 foot , and at other times to 12 Cubits : And this Inundation is so constant , that it always happens at a set time , that is , presently after the Summer Solstice . The Common Opinion of the Antients was , that this swelling of the Nile was caused by the anniversary winds , called Etesiae , which did blow about that time ; and driving against the mouths of this River , did stop the vent of its waters into the Sea , and by consequence made its Channel to swell , and run over its Banks ; according to the account the Poet Lucretius gives us of this Inundation , in his 6 th Books . In Summer Nile o're-flows , his Streams do drown The Fruitful Egypts Fields , and his alone ; Because the Mouth of that wide River lies Oppos'd to North , from whence th' Ethesia's rise ▪ From heavy Northern Clouds , and fiercely blow Against the Streams ; those stop , and rise , and flow . But this doth not seem to be the genuine cause of the overflowing of Nile ; since it is certain , that the Nile sometimes overflows , before that these soft winds begin to blow , and consequently before they can stop the Mouths of it , in order to cause the said Inundation . And that this overflowing ceaseth , before they cease to blow , and to drive its waters upwards , as is supposed . Wherefore the cause of this Inundation may , with more ground be ascribed to the great and frequent Rains that fall in Ethiopia , from about the middle of June , till September ; because the time of their Winter is from the end of May , to the beginning of September . And in like manner , the River Paraguay , or as the Spaniards call it , Rio de la Plata doth overflow , at the time when great Rains fall on the Mountains of Peru , which obligeth the Inhabitants for 3 Months to live in Boats. XIII . What is the reason of the suddain rising and vanishing of some Fountains . It is observed , that Fountains do sometimes , all on a suddain , break forth on the Mountains , which were never seen before ; and that others on the contrary , do as suddainly vanish and disappear . This sometimes is caused by Earthquakes , whereby the hidden Sources of Springs are broken up , and the obstacles that retain'd and kept them from breaking forth , are removed . And they dry up , and suddainly disappear , when some new obstacles are cast up to stop their way ; or when the water is sunk down into such deep Caverns , from whence it can no more be elevated : For in this case it is forced to change its course , and turn aside another way . Who does not know that a vast heap of waters is hid in the hollows of Mountains , which being opened by an Earthquake , way is made for the said waters to break forth ? XIV . Why some Rivers run under Ground . Some Rivers , in the midst of their Course , run and hide themselves under ground , and afterwards start up again like new Rivers . Thus the River Niger , in Africa , which some suppose to be derived from the Nile , by a subterraneous passage , by that time it meets with the Mountains of Nubia , runs down under ground , and breaks out again on the VVest side of the said Mountains . The Reason of this is twofold . 1 st . The obstacle of a higher ground than is the bottom of the River . 2 dly . The Hollow that is under the ground , at the place where the River hides it self , or the looseness of the ground , which easily gives way to the force of the River . Thus the River Tigris , in Mesopotamia , after it hath passed the River Arethusa , meeting with the Mountain Taurus , runs down into a Cave , and ariseth again on the other side of the Mountain ; and afterwards having passed the Lake Thespis , hides it self again under ground , and riseth up again about 6 German miles farther . CHAP. V. Of the Sea. I. Why the Sea seems to be higher than the Earth . THE great Mass of the VVaters of the Sea , appears higher than the Earth , and seems to be raised much above the surface of it . And therefore to those who take a prospect of the Sea , from the Shoar , the Sea seems higher than the Land ; and when from the Sea , they look to the Shoar , that appears lower than the Sea. Some persons , measuring all things by their Eye-sight , suppose the Sea , because of the same convexty it hath with the Earth , to rise by degrees above the Earth ; and that it is not only higher than the ground or bottom of the Earth that supports it , but is also higher than the Islands and Continents . But this is no better than a deception of the fight , which reaching forwards towards the more remote parts of the Sea , is directed towards them by Rays , which the more they recede from a Perpendicular , the further distant and higher it represents them . This we find by experience , not only in the Sea , but in any great Plain . And on the other hand , the reason why the Shoar , beheld from the Sea , appears lower than it , is because the height thereof is contained in the least Visory Angle , which the Roling Waves do intercept , and take away the sight of ; so that it is no wonder if the Shoar seems to be more deprest than the VVater . II. That the VVater is not higher than the Earth , proved . But besides this , we have a very convincing Argument to prove , that the Sea , setting aside the swelling of its VVaves , is not higher than the Earth . For this supposed , it must follow , that the VVater , by its natural gravity , would overflow , and quitting the upper part of the Earth , would only take up the lower . Or forasmuch as the parts of the VVater do push forwards one another , and the upper parts press those that are under them , the whole surface of the Earth would presently be covered by them , and both Islands and Mountains be overwhelmed by the Sea. Besides , how would Rivers be able to return to the Sea , if the Sea were higher than the Earth ; and if the surface of the Earth were lower than that of the Sea ? For nothing that is heavy does naturally tend upwards , as every Body does that tends to a Body , that lies higher than it self . Book . 2. Part. 4. Chap. 5 ▪ G. Freman . Inv. I. Kip Sculp ▪ To the Honourable Sr. Ralph Delaval , of Seaton-Delaval in Northumberland Knight , one of the Comissioners for Executing the office of Lord high Admirall of England ; and joint and Seperate Admirall of their Majesties Fleet. This Plate is humbly Dedicated , by Richard Blome . And therefore it was a vain Fear into which the Mathematicians cast the Kings of Egypt , when they dissuaded them from cutting a Channel from the Red-Sea into the Nile , or the Mediterranean ; supposing the Red-Sea to be 3 Cubits higher than the Mediterranean , and that therefore a Deluge would be the consequent of that Enterprize . For indeed , had the Red-Sea been only one Fingers-breadth higher than that part of the Mediterranean which washeth the Shoars of Egypt , the whole compass of Africa , would not hinder it from running thither , till both Seas were reduc'd to a Level . Thus , because th Caspian Sea is higher than the Euxine , therefore it empties it self into it : And because the Euxine-Sea is higher than the Aegean or Archipelago , therefore it falls down into it . IV. Aristotle's Mistake about the height of the Sea. This discovers ARISTOTLE's Error , who asserts the Ocean and the Earth , to be higher toward the North , than about the Aequator ; because the Ocean seems to flow from the North parts of the World , as from its Head or Fountain . But indeed , nothing of certainty can be thence inferr'd : For it is doubtful as yet , and hath never been sufficiently proved , neither from that motion can it sufficiently be cleared , whether the Northern Countries , and more particularly the Channels of Northern Rivers , be higher or lower than the Channels of those that are about the Aequator . The Reason is , because this motion is not General or Universal , as not being found in all Northern Countries . And tho' we should grant this motion of the Ocean from the North , yet doth it not follow from thence , that the Ocean there is higher , because it is to avoid this greater height , that the Sea flows from the North towards the Aequator . V. VVhy a Ship cannot without difficulty be brought out of the Haven into the Sea. But some Body may Object : If it be so that the Sea is not higher than the surface of the Earth , how comes it to pass , that it is more hard to get Ships out of the Haven into the Sea ; than it is to enter into it from the Sea ? I Answer , That the Reason of this is , not because the Sea is higher than the Earth ; but because when a Ship is getting out of the Haven , it hath but little Wind , because the Shoars and Banks break the force of it , and hinder it from rushing with a full swing against the Sails ▪ Whereas , when a Ship enters the Haven , nothing hinders the Wind from coming with full force against them . VI. How it comes to pass that the Rivers return to the Sea. Rivers continually exonerate themselves into the Sea , and having past through several Tracts of the Earth , return to it again ; and yet the Sea is never increased by this accession of the VVater of innumerable Rivers , that continually , without ceasing , run into it . The Cause hereof is , that continual Change , whereby the Sea-water is turned into Vapours , and they again changed into water . For as we see in an Animal , that the Blood runs out of the Hollow Vein into the Heart , and presently after is from thence dispersed through the Great Artery , to all the parts of the Body : So the Vapours arising from the Sea , are conveighed through the Passages of the Earth , to the tops of Mountains , and there being condensed by the Coldness of the place into water , become Springs , and afterwards Rivers ; which through the slanting places of the surface the Earth , are carried again towards the Sea , which is the place from whence they first proceeded : So that as much water as is thus evaporated from out of the Bowels and Caverns of the Earth , so much flows into them again from the Sea ; and as much as runs from the Sea through these subterranean Passages , so much the Rivers return to the Sea again . VII . VVhy the Sea always preserves the same degree of saltness . Neither is it any matter of wonder , that the Water of the Sea continues salt , notwithstanding she receives the Fresh-water of so many Rivers into her Bosom : And so much Salt-water continually flows from her into the Bowels of the Earth , and which leaves its Salt in the places where they are distill'd into Vapours . For besides that the Sea-water may be conveighed into the Earth to those places where it is thus distill'd , by such large and open Passages , that the water which is left after the Evaporation , may carry back all the Salt which it could not elevate , into the Sea ; the water which runs continually through the Mines of Salt , do carry along with them at least as much of it to the Sea , as the Sea-water conveighs into the Bowels of the Earth : Whence it is evident , that the Sea must always keep its saltness , as we see it doth . VIII . VVhy the Sea is found to be more salt in the heat of Summer . In the Heat of Summer the Sea is found by Experience to be Salter than at other times : Which they who live under the Aequator and Torrid Zone are very sensible of . The Reason is , because the Sun , which is extream hot in those parts , doth evaporate the thinner and fresher parts of the Sea , leaving the more thick and gross parts behind . And the more vehement this heat of the Sun is , the more are the outward parts of the Water agitated , and a greater abundance of Vapours are sublim'd ; which being condensed in the Air , and reduced again to water , do not always fall down in the same place from whence they proceeded ; but frequently having taken a large turn in the Air , fall down to the Earth , at a great distance from the place of their first elevation . An Example whereof we have in Salt-water that is boyled over the Fire , which the longer it is boyl'd , the salter it grows ; because the fresh particles are continually exhaled from it . IX . How it may be prov'd , that our Spittle is salt . Hence it is that our Modern Physicians suppose our Spittle to be salt and sowrish ; for when we spit upon a hot Briok or Iron , it leaves a white Spot behind it , which is nothing else but a collection of saline particles , that because of their Stiffness and Heaviness , could not fly away together with the watry particles . X. VVhy the Sea is more salt betwixt ▪ the Tropicks , than elsewhere . The Reason why the Sea is more salt betwixt the Tropicks is , because the Sun dispenseth more heat towards the Aequinoctial Line , than in places at a farther distance from it , and consequently resolves more of the Particles of fresh water into Vapours , and by the extraction of them leaves the Sea-water salter than it was before . To which may be added , that the Sea is of a far greater extent between the Tropicks , than in the Frigid and Temperate Zones , and less Rivers empty themselves into it . XI . VVhy Sea-water near the Aequator is more proper for Salt , than others . And from hence we may easily perceive the Reason , why the water of the German Ocean , and of other parts of the Northern Sea , is not so good to be boiled into Salt , as is the water of the Spanish Sea , the Canary Islands , and Cape Verd , or the Green Promontory in Africa ; viz. because th●se last parts of the Sea are nearer to the Torrid Zone , and receive its waters from the Ocean of that Place . But yet it cannot be deny'd , but that some of these Seas are more proper for the making of Salt , than others . Thus the Sea-water that is upon the Coast of Guinea , in the Aethiopick Ocean , doth at one boyling afford a Salt as white as Sugar , such as neither the Spanish-Sea , nor the Sea-water of any part of Europe can afford at the first boyling . XII . How Sea-water may be made fresh . Dig a Pit on the Sea-shoar , a little higher than the Tide reacheth , and as deep as the lowest Sea-mark ; and when the Tide comes in , you 'l find it fill'd with Fresh-water . This is an Experiment commonly try'd by the Inhabitants of the Sea-Coast of Barbary , who have little other Fresh-water , but what they get after this manner . The Reason of this Experiment is , because the Sea-water loseth its saltness by straining through the Sand , between which it leaves its Corner'd parts , which are the cause of its saltness . But yet it is not necessary , in order to the ridding of Sea-water from its saltness , that the pores through which it is strained , be extream strait and narrow ; for if they were so , they would presently be stopt up , by the first saline Particles that entred them , and so there would be no way left for the particles of the Fresh-water to pass . But it is rather necessary , that the Sea-water be strained through those Bodies , whose pores are large enough , and full of Corners and Windings , proper to stop the particles of Salt from running along with the Fresh-water . It is also necessary , that the Body through which it is strained be large enough , that so , since it can rid it self of the Salt all at once , it may have a sufficient space to drain through , to rid it self thereof by degrees , by passing through the several Crooked windings of it ; and therefore some time is required , before the Sea-water can pass through that space , which is necessary by filtration to separate its Salt from it . XIII . VVhy the Sea-water is salt . Reasons may also be assigned , why it pleased the Creator of all Things that the Sea should be salt ; viz. 1 st , That it might not be apt to putrifie , corrupt and stink . 2 dly , That the Sea-water might not be so easily resolved into Vapours , as the Fresh is , by reason of the Heaviness the Salt imparts to it . 3 dly , That the flesh or substance of the Fishes , that breed and live in it , might be the firmer . 4 thly , That it might be the more able to resist the violence of Winds and Storms . For Salt-water is more firm and consistent , than Fresh . 5 thly , That it might be the better able to resist cold , and not be so easily frozen , as Fresh . XIV . VVhy the VVater of the Sea runs VVestward . Constant and known Experience hath informed Sea ▪ men , that the Sea moves from East to West : So that by this means Ships have a shorter or more speedy Navigation to the West-Indies , than to the East . And all Navigations to the East , are found more difficult , and take up more time . This proceeds from the Inequality of the parts , whereof the Earth and Water do consist . For tho' this Terraqueous Globe , by its Diurnal motion , moves from West to East , about its own Center ; yet because the Earth is more solid and heavy than the Water , therefore it is whirl'd about its Center more swiftly , than the water : So that the water , which is more slowly carried about , seems to move towards the West ; in like manner as a Boat , that moves more slowly towards the same place , appears to tend the quite contrary way to another Boat that moves more swiftly . XV. This motion is only perceptible between the Tropicks . This motion of the Sea-water from East to West , is most perceived between the Tropicks , and in the Torrid Zone ; because tho' the Earth be Spherical , yet because that part of its Roundness which is between the Tropicks , is whirl'd about with the greatest force towards the East , as being furthest from the Poles ; whereas that part which is without them , because of its nearness to the Poles , is moved more slowly , therefore it is that this motion is only perceptible between the Tropicks . XVI . Of Currents observed in the Sea. Besides the General motion of the Sea , which belongs to the whole Mass or Body of it , there are also several particular motions observed in it , which are called Currents ; whereof some happen constantly at certain Seasons of the year , but others are not subject to any fixt time . They that Sail to the East-Indies , observe some very swift Currents in their way thither : For tho' the Tide , in those Seas , do not rise above 2 or 3 Foot ; yet they extend themselves the space of 12 or 13 Hours towards the North , and the rest towards the South , with such an extream Violence , that it sometimes breaks the strongest Cables of Ships lying at Anker . XVII . The Cause of certain and fixed Currents . There be 2 sorts of these Currents , the one constant and fixt , the other inconstant and irregular . It seems probable , that the constant Currents that are observed between the Tropicks , do proceed from hence , because the waters that run Westward , are more straitned in some places , than in others ; either because the Bottom of the Sea is more deep there , or because of a range of Rocks in Parallel Lines , which oblige them to follow their direction . And as to those Currents that are found without the Tropicks , and which continue always the same , it is very likely that they proceed from some Rivers , which continually discharge themselves into the Sea. For as there are some Rivers which appear above the Earth ; so there are others also that lye hid , and which flow beneath the surface of it . XVIII . The Cause of inconstant and irregular Currents . As to those Currents which are Incertain and Irregular , both as to the time , and the determination of their motion , they seem to be caused by the Unevenness of the Bottom of the Sea , by reason of divers Rocks ranged in Lines , differently tending towards the 4 Principal parts of the Horizon . For this supposed , whenever there is a stiff Gale of Wind , it must needs drive the water forceably between these Rocks , and by so doing must force them to take a Course by so much the more violent , as the Wind is stronger , and the space betwixt the Rocks straiter . XIX . The Sea-water can bear more heavy burthens , than the Fresh-water . The Sea-water doth more powerfully resist the Bodies that are put into it , than River-water : As we see that sometimes those Ships which were born up by the Sea , do sink in the River or Haven . The Reason is , because the water of the Sea is more heavy , as consisting of more thick and solid Parts , and which may lye in a less room , and therefore are more able to bear the burthens put upon them . This is most evident in the Dead-Sea , which because of its extream saltness , will buoy up a Man , that is cast into it with his Hands and Feet bound . HIERONYMUS FLORENTINUS relates , that he saw a Man that was cast headlong , bound Hands and Feet , into the water , yet was kept up by it for a whole Night : And POSSIDONIUS affirms , that he saw in Spain , Tiles made of an Earth wherewith they scour Plate , swimming on the top of the water . Neither can any other Reason be given , why a Ship draws more water when she Rides in an Haven , than at Sea ; but because the water in the Haven is not so salt as the Sea-water , and therefore doth not buoy up the Vessel so strongly , as the more Salt-water of the Sea. XX. Why Wine through a Flannen or Linnen-Bag , of a Conical figure , loseth its strength . This also is the Reason why Wine that is strained through a Flannen-Bag , commonly called Hippocrates his Sleeve , doth lose the greatest part of its strength ; because many of those particles , wherein the strength of the Wine doth consist , do continue sticking in the pores of the Filter , by which means the Wine being deprived of them , proves much more weak than it was before . XXI . Salt-water is not proper to quench Fire , but rather increaseth it . Salt-water is not good to quench Fire with , for it rather promotes it . The Reason is , because the particles of Salt , which predominate in Salt-water , being stiff and inflexible , are easily agitated by the Bodies they meet with ; and being thus agitated , are very proper to increase the Flame , seeing that of themselves they oft produce a flame , when at any time they break forth violently from the Bodies in which they are contained . To this may be added , that the Sea-water is much thicker and fatter , than Fresh-water , and so is more proper to feed and foment the flame , than to extinguish it . It was by this means that the Fire-works cast into MARK ANTONY's Fleet , in the Sea-fight at Actium , did much greater Execution , because the Souldiers not understanding the Nature of Sea-water , endeavouring to quench the Fire kindled in their Vessels , by pouring Sea-water upon the flame , did thereby strengthen and increase it . XXII . When Fire hath got the Mastery , it is rather increased by pouring a little Water upon it . Yea , it may be observed , that tho' Water be very contrary to Fire ; yet there be some Bodies , which after they have water cast upon them , do flame so much the more . And therefore it is that Smiths sprinkle water upon their Sea-Coal , to make them burn the more violently . And nothing is more evident , than that a small quantity of water cast upon a strong flame , doth but augment it . But Salt-water doth this with greater efficacy , because of the stiffness of the parts of it , which darting into the flame like so many little Arrows , and hitting against other Bodies , have a great force to shake and agitate them : Which is the Reason why Salts are made use of for the melting and solution of Metals . CHAP. VI. Of the Ebbing and Flowing of the Sea. I. The Cause of the Ebbing and Flowing of the Sea , is the Moon . THe Sea , in the space of 24 Hours and almost 50 Minutes , does flow and ebb twice . The Cause of this wonderful Effect , is ascribed to the Body of the Moon , which by pressing the Matter that runs between her and the Earth , doth drive the water also towards the shoars . For as that part of the Street is made more narrow , which hath some part of its breadth taken up by some thick Body ; and as that Wind is the strongest and most forceable , which passeth through a narrow place ; so likewise , because the presence of the Moons Body doth streighten the space that is between her and the Earth , the Air and the Water , which are fluid Bodies , must needs give way , and rise higher towards the shoar . In the very same manner as we see , that water , or any other Liquor , poured into a Vessel , riseth about the sides of the Vessel , if it be prest by any thing , and leaving the middle of it , is carried towards the Edge of it . But to clear this yet further , let us suppose T to be the Earth , and EFGH , the water which compasseth the Earth ; B , the Moon , running through her Circle in a Months time ; NOPQ , the Vortex of Heaven , which hath the Earth T for its Center , and which together with the Moon is continually whirled about the Earth . For the same Heavenly matter which tends to O , and thence continues its course to P and Q , requires as much space on one side of the Earth , as on the other , and so would press it every where alike . But because the Moon is at B , and doth not move so swift as the Heavenly matter ; therefore the said Matter cannot but press the Earth more towards P , than towards O or Q , and consequently the Earth must remove a little from the Center of the Vortex , and come nearer to D ; and by this means depress the water which is at F and H. Moreover , because the Earth is whirl'd in 24 Hours about its own Center , that part of it which is now at the Point F , where the Sea falls , within 6 Hours , will be at the Point G , where the Sea swells ; and after 12 Hours at the Point H , where it falls again . And forasmuch as the Moon all this while makes some small progress also , and finisheth her Circumvolution about the Earth in the space of almost 30 Days , we must add 12 Minutes of an Hour to the time of each Ebbing and Flowing ; so that the Sea takes up 12 Hours and 24 Minutes , in her Ebbing and Flowing , at one and the same place . II. The Moon is the Cause of this Reciprocation . Whence it is evident , that this motion of the Sea must be attributed to the Moon ; seeing that we find , that the Tide riseth every Day one Hour later , according to the motion of the Moon . For suppose we the Tide to come in to day at 12 of the Clock , to Morrow it will not begin till One , which is a sufficient Argument , that the Tide proceeds from the Moon . III. Whence the great difference of the Tides doth arise , The Tide doth not always observe the same time , but comes to some Shoars sooner , and to others later . This difference may proceed from many Causes ; but chiefly from the unevenness of the Bottoms or Channels , wherein the waters are contained , or from the situation and disposition of the shoars , by which the motion of the water is much advanced or hindred . Whereof we have an Instance in the Banks of Rivers , between which the water , according to the diversity of their situation , either runs headlong , or flows gently ; goes winding , or else strait along . IV. What is the reason of the great Tides that are one the Coasts of Normandy . Hence it is also that they have such great Tides , on the Coasts of Normandy and Britanny , so as that about S. Michael , and S. Macluo , the Tides rise sometime above 60 Foot high . For the Sea being driven from South to North , are beaten back by the British Shoar , and afterwards rebounding from the Coasts of Normandy and Britany they joyn in one Angle , and because of the narrowness of the place do swell and encrease . V. The flowing of the Sea rends at the same time from the East to the West , and from the Tropicks to the Poles . The Tide doth not only tend from East to West , but also at the same time from the Tropicks to the Poles : But yet so , as that in certain places , the one of these is greater and more sensible than the other , which depends on the position or direction of the Coasts . As for Example , in the Atlantick Ocean , the Tide seems only to tend from the Tropicks to the Poles , and this because the Coasts of America do resist its motion from East to West . But on the contrary in the Magellan straits , no other motion is perceived but from East to West ; because the Coasts there resist the motion from the Tropicks towards the Poles . VI. Why there is no Tide in the Mediterranean . The Reason why only a very small Tide , or none at all is perceived in the Mediterranean is , because it contains many Islands , which resist and hinder it , as also because of the narrowness of its Channel , which does not afford the waters room enough to display themselves in . For tho' that part of the Mediterranean , which is beyond the Tropicks , hath entercourse with the Ocean by means of the straits of Gibraltar ; yet because that passage is not above 3 or 4 Leagues over , all the water that can enter this way within the space of 6 Hours , is very inconsiderable , if considered with the height and breadth of that Sea. And moreover , as soon as the water is entred , it finds the Sea broad , and the Shoars so disposed , that it only moves along the Shoars ; and therefore it is necessary , that there be only a continual course of the water , without any Flood . VII . Whence the Tide proceeds , which is found in the Gulf of Venice . But yet we must here except the Gulf of Venice ; for seeing that the waters that are there , being beaten back from the Coasts of the Morea , do soon reach the end of that Channel ; it must needs follow that because the first rebounds are seconded and supported by the latter , they must cause a sensible Tide , as experience doth witness they do . VIII . On the Coast of Provence there is but a small Tide . On the Coast of Provence in France , a small Tide only is observed , esecially at the New and Full Moon of the Aequinoxes ; for seeing that from that Shoar , to the opposit Coast of Africa , there are almost 8 Degrees of Latitude , without any Island lying between ; and because it hath an open way from South to North , the Sea there , about the Aequinoxes , flows about 2 Foot high . IX . Why there is no Tide in the North Sea. So likewise in the North Sea beyond Scotland , towards Norway and Greenland , scarcely any Tide at all is observed , because that part of the Earth , is at a great distance from the Tract the Moon moves in ; or because that Sea is extended from West to East , and is interrupted with many Is●ands , and jetting Points of Land : Whereas in Hudsons Bay , a great Tide is observed , because that Sea lies open from East to West . X. Why the Tide varies in some places . And much a like account must be given , of that great variety of Tides observed in other places , for that the Sea flows many Foot high at Venice , and at Ancona riseth but little or nothing at all ; that on the Coast of Syria , it flows much higher , than in several parts of France , where it scarcely riseth 1 Foot high ; the reason of this is , because the Coast of Syria is at the end of the Mediterranean Channel , and those of France about the midst of it ; as we find in a Boat , that the rising and falling of the agitated water , is only perceived in the extreams parts of it , not about the midst , where the water is smooth and even . XI . The Sea water sometimes takes up more time in flowing than in Ebbing . Accordingly also , a Reason may be given why the Tide , in the River of Garonne in France , flows almonst 120 Miles , in the space of 18 Hours , whereas the ebbing is performed in 12 only . For if the motion of this Tide be exactly Calculated it will be found , that if the Flood comes in at the New Moon at 3 of the Clock at Midnight , it will proceed almost 50 Miles in 6 Hours , that is , by 9 a Clock in the Morning ; and afterwards in so many Hours more , will come to Bordeaux , and at 3 a Clock in the Afternoon it turns the Ships about , which shews that the Tide is coming in : And then at 9 of the Clock it reaches as far as the Town of S. Merceur , but is very weak and small there ; and without making any stay there , is presently followed with the Ebb , which it is evident must not take up so much time by 6 Hours as the Flood did ; because the water by its innate heaviness runs more swiftly to the Sea , than from the Sea into the Rivers . For the Sea being low , and much deeper than the Rivers , it cannot be otherwise but that the further the Tide reacheth up in Rivers , the more slow must its motion be , because it mounts all the way , and moves up-hill . For the flowing of the Tide continues , till the water of the Rivers and of the Sea be of one and the same height . XII . Why the Tide at Havre de Grace in France doth set sooner at the Full Moon , than at Diep . Havens that are under the same Meridian , have not always their Tides at the same time , as is evident in that famous French Haven of Havre de Grace , which at the Full and New Moon hath high water at 9 a Clock in the Morning ; whereas at Diep it is not high water till 10 a Clock , tho' these Havens be but at a little distance from one another , and scarcely differ half a Degree . The reason hereof is , the many windings and turnings that are in the Channel , which change and turn the course of the water : As likewise the violence of the Winds , which is very considerable there . Thus at Calice and Sluys in Flanders , at Full and New Moon it is high water , about 11 a Clock , the Moon being enlightned on that part which looks Southward ; at Arnmuyden and Middelburg , at 2 a Clock in the Afternoon or Morning ; at Zierick-zee at 3 a Clock when the Moon is at South-west , and the Sun enters Capricorn ; at Bergen 2 Hours and an half later ; at Antwerp and Dort , the Moon being turned toward the Aequinoctial West , almost at 6 a Clock ; at Mechelen at 8 , but yet so as that the Tide sometimes comes in faster , and as other times slower , according as the Weather is Fair and Calm , or Stormy . XIII . The Tides are greater at the New and Full Moon than at other times . The greatest Tides are at the Conjunctions about D , and at the oppositions about B , that is , at the New and Full Moon , than at the Quarters , or Quadrate Aspects at A , and C. And therefore the Sea men at the New and Full Moon , because the Tides are then greater and swifter , call it a live Sea , and at the Quarters a dead Sea. Book . 2. Part. 4. Chap. 7. G. Freman . Inv. I. Kip. To the Right Hon ble . Henry Lord Viscount Sydney of Shepey , Baron of Milton , Ld. Leivtenant of Kent , Constable of Dover Castle , Lord Warden of the Cinqueports , Mr. Generall of their Ma ties . Ordnance , Collonel of their Ma ties . first Regiment of foot Guards , one of the Gentlemen of his Majesties Bedchamber , and one of the Lords of their Majesties most Honourable privy Councell &c. a. This Plate is humbly Dedicated , by Richard Blome . The Reason is , because the Heaven A , B , C , D , is not of a Spherical , but almost Elliptical figure , and hath more room in that part of it , which is between the Earth and A , C , than in the opposit part about B , and D. Now seeing that the Moon when she is about the Quarters , moves in these larger spaces , she consequently advanceth more slowly , and so presseth the waters less , and causeth a less Tide . Whereas at the New or Full Moon , she moves in the narrowest part of her Ellipsis , and therefore causeth a greater pression of the waters , and a greater and swifter Tide . XIV . What is the Reason of the great Tides that are in the River Seine about the Aequinoxes and Solstices . It is for the same Reason , that 3 great Tides are observed in the River Seine in France , about the Aequinoxes and Solstices : For the 1 st of them riseth almost 4 Foot high , the 2 d 8 , and the 3 d 12 and upwards , and that with so great swiftness , that in 4 Hours it advanceth 25 french Leagues with a great Noise . For seeing that the Tides exceed about the Aequinoxes , and about the Full and New Moon , the motion of the waters must be greater also ; and seeing also that the Channel of the River Seine with respect to its Mouth , where it enters the Sea , doth resemble a Trumpet , which grows narrower and narrower by degrees , it cannot be otherwise , but that the waters must rush in with a great force into such a narrow Chanel . XV. Whether the River Euripus Ebb and Flow so many times a day , as some antient Historians have le●t upon Record . The River or rather the narrow Sea Euripus , if we may believe the Antients , Ebbs and Flows 9 times a day . The cause of this effect may also be ascribed to the Interposition of the Moon , by the pressing whereof the River runs down , not towards one part of the World , as the Seas do , but every way ; so as that one part goes to the South , another to the North , &c. which as they light upon the Straits of a narrow Sea , or upon neighbouring Shoars , accordingly the Ebbing is hastned or retarded . Tho' indeed we may have good reason to question , whether what the Antients have related of this River , be all agreeable to Truth ; seeing that TITUS LIVIUS in his 8 th Book , Decad 3d denies it , and gives us sufficient occasion , to doubt of the faithfulness of Authors as to that Point . The Strait of Euripus , saith he , doth not ebb and flow at set times 7 times a day , as the common report is , but according to the Wind is sometimes hurried this way , and sometimes that way , like a Brook that falls headlong from a steep Mountain ; so that it does not suffer the Ships to rest night or day . XVI . Why there is no Tide in Rivers and Lakes . Rivers and Lakes have no Tides , and receive no change from the opposition of the Moon . XVII . Nor any Tide in the Dead Sea , nor in the Euxine Sea. The Reason is , because their Banks are not sufficiently distant from one another , nor is their surface large enough to admit the pressure of the Heavenly matter . For even as Vessels the narrower they are , the less motion is perceived in them ; so no other water , but the Sea which surrounds the whole Earth can have so much room , as at the same time to rise or swell in 2 several places , and to fall or sink in 2 others . And therefore it is that the Rivers , Bays and Lakes that are between the Tropicks , cannot admit of any Ebbings and Flowings . As to those Lakes and Rivers that are without the Tropicks , neither are they subject to Tides , no nor the Seas neither , that are considerably great , in case they have no entercourse with the Ocean , or if they have any , yet the communication of the waters , is by a strait and narrow passage . Thus the dead Sea in Asia , and the Euxine Sea in Europe have no Tides , because they have no communication with the Ocean ; neither hath the Baltick Sea any , for tho' it be united with the Ocean , yet the strait of the Sound by which it communicates with the Ocean , is so far turn'd aside , from the straight Line , in which the waters move that are driven from the Tropicks towards the Poles , that they cannot enter in sufficient quantity into it , within the time of 6 Hours , to cause any sensible Elevation of the waters . CHAP. VII . Of Fire . I. How Fire ▪ produceth or propagates Fire . ONE Fire is produced or propagated by another . The Reason hereof is , because the parts of the 3 d Element , being carried away by the First that surrounds them , meet with like parts of the 3 d Element , which they not only separate from their like parts , but also from those of the 2 d Element , so that these also being surrounded with the first , are snatch'd away by it . For as a Ship that is carried along by the stream of a River , doth more forceably push forwards other Bodies it meets with , than the River it self can ; so these parts of the 3 d Element , being hurried along by the 1 st Element that surounds them , do agitate more strongly than the first alone can . Wherefore , if the force of these parts that are hurried away by the first be so great , that they be able to push far from them all the parts of the second , which the neighbouring Air is full of , and keep them so ; then the Flame appears , as we see in Wax , Grease , Oyl , Brimstone and Gunpowder set on Fire : But if they be not of force enough to do this , then the Fire lies overwhelm'd with much Ashes , as in Leaves , Touchwood , or any other dry Fewel . II. How Fire is generated by concentration of the Beams of the Sun. Fire is also generated by concentring the Rays of the Sun. The Reason is , because Light is nothing else but the motion of the 2 d Element , produced by the 1 st , whereby the 3 d Element is made visible . For it may happen , that upon the uniting of several Rays , some part of the 3 d , may be separated from its other like parts , and from the 2 d , and consequently be surrounded only with the 1 st , whose motion it must then follow . Thus in our time Burning-glasses have been invented , by which Metals may be Melted , and Wood suddainly set on Fire . III. There be some Fires that shine without heat . Some kinds of Fire do shine , and yet are destitute of all heat . For they who use the Sea , observe that at sometimes when Waves are dasht against Rocks , they appear as if flames of Fire rebounded from them . And thus also Rays of Light proceed from Rotten-wood , and Saltfish , but without any sensible heat . The Reason is , because the Matter of the 1 st Element , which is shut up in the Pores of such Bodies as these , tho' they be of force enought to push the Globuli of the 2 d Element , and to move the Retina , as much as is sufficient to produce the perception of Light ; yet is it too weak , to separate the Earthly parts from one another , and to excite that agitation in them , which is strong enough to produce heat . Fire therefore only shines , when the Pores of the Terrestrial Particles are so narrow , that they can only admit the first Element , and shut out every thick Body . Thus when the pointed Needles , as it were , of Salt do enter the strait Pores of Fishes , and drive thence the Globuli of the 2 d Element , so as to be open only for the admission of the matter of the 1 st Element , they by this means make the Fishes Scales to shine like Glow-worms . Historians tell us of a certain Fly in New Spain , of the bigness of a Beetle , called Cocujus , whose Eyes do enlighten the Night like a Wax Candle , so that it serves for a Lanthorn to those that walk by Night , and for a Lamp to burn in ones Chamber ; and by the Light whereof one may read or write ; and have the same effect when the Insect is dead , as when yet alive . IV. Some Fires burn without giving Light. Some Bodies afford great Heat , but are distitute of all manner of Light : As the Blood of Live Animals , Horsdung tending to putrefaction , Quick-Lime sprinkled with water , in which things there is a hidden Fire that burns and scorcheth , without the appearance of any Flame . The Reason is , because in such Bodies as these , the parts that surround the 1 st Element , and that are agitated by it , are too soft and limber to transmit the Action of Light. For tho' some of them swim on the top of the matter of the 1 st Element ; and comply with its motions ; yet because some Watry and Aiery plyable parts , are mingled with them , they have the power to kindle heat and fire , but not of receiving the action of Light. Hence it is that when the Spirit of Vitriol and Oyl of Tartar are poured together , an effervescence or boyling is caused , because the free passage of the subtil matter being hindred in them , doth produce a wrestling or contest betwixt these 2 Liquors , which is the cause of a vehement heat . And for this Reason Horsdung , and the Blood of Live Animals are hot , because the 1 st Element is pent up by a softer matter , within the narrow pores of the parts . And therefore they are only hot , that is they have only the force to move those Nerves that are subservient to the Touch , but not of pushing the Celestial Globuli , wherein the nature of Light doth consist . Quick-Lime sprinkled with water , waxeth hot , because its parts are so suited and disposed , as to admit the water surrounded only with the matter of the 1 st Element ; so that the Globuli , being expelled , the matter of the 1 st Element only bears sway . For those Bodies are said to have the form of Fire , whose particles do separately comply with the motion of the 1 st Element , and imitate the agitation thereof . V. Why the Flame mounts upwards . Flame , by a natural propensity , mounts upwards towards Heaven ; and to the end it may the sooner get thither , it quits its thickness , and takes to i● self a Conical Figure . It may be said that the Flame doth not so much affect to mount upwards , as it is by out ward force driven up thither ; for being on all sides surrounded by the Air , and by reason of its less degree of agitation , as it were , continually beaten by it , it rather tends upwards than downwards , because it meets with less resistance there . The way this is performed take as follows . The matter of the 1 st Element , which is predominant in the Flame , being in perpetual motion , strives continually to depart from the place where it is ; and being lighter than the Globuli of the 2 d Element , it is carried upwards , and withdraws it self from the Center of the Earth ; and forasmuch as no Body can be moved , except some other , by a circular motion , enter into its place , as much Air returns towards the Flame , as there is Smoak that goes from it ; and therefore the Air , which , as it were , licks the upper part of the Candle , mixing it self with the parts of the Wax or Tallow , affords fewel to the Flame : So that the power of dilating the Fire , and driving it upwards , may in some sort be attributed to the Air. Now the reason why the Flame is of a Conical Figure , and ends in a sharp point , is evident , because the middlemost parts of the Flame have more agitation , and consequently move with more force , and are sooner carried upwards , than the outward parts , whose agitation is diminished by the nearness and contact of the Air. VI. A Pyramidal Figure is accidental to Flame . From what hath been said , it is evident , that a Pyramidal Figure is accidental to fire , because the Air , by compressing the parts of the Flame , doth form it into that figure . For if we take a Wax-Candle , and place it in an Iron Pipe , and put the said Pipe into a Porringer full of Spirit of Wine , and afterwards set the Wax-Candle and Spirit of Wine upon the fire , we shall find that the flame of the Wax-Candle will be dilated , and swell 4 or 5 times greater than it was , and will then appear of a round , and not of a Pyramidal Figure . VII . The Fire burns more fiercely in the Winter than in the Summer . In the Winter , when the Air is most comprest and condenst with Cold , the Fire burns most fiercely ; and in Rainy Weather , and more especially when the Sun shines upon the hearth more weakly . The Reason is , because Sulphureous Particles are necessary for the preservation of the Fire , which do break forth from the combustible matter ; and Nitrous also , which are mingled with our Air : Now seeing that the Air in Winter , doth most of all abound with these Nitrous Corpuscles , it cannot be otherwise , but that the greater quantity of these must make the Fire burn more fiercely . Whereas , when the Sun shines upon the Hearth , the Nitrous Particles in the Air are scattered , and consequently the force of the Fire debilitated and almost extinguish'd . Hence it is that when a Lamp or other Light is put into a large Glass , fit for that purpose , as soon as the Air is pumpt out , it is presently extinguish'd ; not so much because it is choaked by its own Smoak , as because it wants this Nitrous Aliment contained in the Air. VIII . Why a Candle with a long Wiek , smoaks more than that with a short one . A Candle that burns with a long Wiek , smoaks more than another that is new snuft . The Reason is , because in a longer Wiek , the thicker parts of the Candle being mingled with the sulphureous , are without any loss carried upwards . But in a snuft Candle , that more fat and sulphureous matter which constitutes the Smoak , by being much agitated in the Flame , is reduced into most minute parts , as may be easily gathered from the crackling noise they make . This is the reason also , why a Plate of Iron , or other Metal being approach'd to the utmost parts of the Flame , contracts only some little smuttiness , because the Terrestrial Matter is by the force of the heat reduc'd to so small parts , that they are no longer perceptible in their egress from the Flame , nor adhere to any Body : But when this Plate is thrust into the midst of the Flame , it is covered all over with Smut and Soot ; and that by means of those grosser particles , that are not throughly subdu'd by the heat of the Flame . IX . How a Candle may be made to burn without smoak . But if a Cotten Wiek be laid to steep 24 hours in Whitewine Vinegar , impregnated with half its quantity of pure Nitre , and afterwards expos'd to the Sun to be dried , it will not send forth any Smoak , because the saline and volatil parts of the Nitre and Vinegar , do so divide and agitate all the moisture , that no part of it can escape the force of the Flame . X. How two liquors pour'd together , produce heat . Spirit of Vitriol and Oyl of Tartar pour'd together , produce an Ebullition , or Effervescence . The Reason is , because the pores of one of these liquors are so formed , that they can only admit the branchy parts of the other liquor , wrapt about with the matter of the first Element ; by which means the first Element having repulst the Globuli of the 2 d , does alone bear sway . Or because the subtil matter , being wont ▪ to flow and move otherwise in the Spirit of Vitriol , than in the Oyl of Tartar , when its free passage is stopt , it causeth a kind of contest between the 2 liquors , and an effervescence or ebullition by reason of the mutual agitation of their parts . XI . Why Fire is kindled by a blast . Fire is commonly kindled by a Blast , whether of a Bellows , or otherwise . Because by this means the Ashes which cover the surface of the Coals , and obstruct their more open pores , is driven away ; by which means the Fire that was about to break forth , is driven inward , and there so separates and divides the parts of the Coals , and throughly penetrates them , as to invade and kindle the fat and inflamable particles also . And hence it is that the flame , when blown upon , makes a noise , which is caused by the resistance of its parts , and the mutual combination that is between them . XII . How Fire comes to be quenched . Fire is quenched , when its parts are scattered and disperst , as it is kindled by the uniting of them . Thus we find , that either too fierce and violent a Blast of Wind , or a copious affusion of Water , doth dissipate the particles of Fire : The same effect is also caused by a steam that is shut up , and hath no vent to get out by ; for then the said Vapour being beat back , and rebounding upon it self , doth divide the parts of Fire . And by this means it is that a Candle is often put out in a VVine Cellar , filled with the steams of New VVine . XIII . Smoak hurts the Eyes , and moves Tears . The Smoak that proceeds from Wood , makes the Eyes smart , and produceth Tears . The Cause thereof are the sharp and biting particles whereof the Smoak consists ; which , twitching the surface of the Eye , and contracting the same , cannot but cause Tears to break forth . Forasmuch , as by this contraction , the Kernels in the Corners of the Eyes are squeezed , and consequently let out the humour contained in them . Onions produce the same effect , when they are cut , or otherwise divided into Parts ; at which time a sharp vapour or steam proceeds from them ; which reaching the Eye , provokes Tears . And probably it is for the same reason , that some Fumes are of use to still the Toothach , whilst by their sharp particles they do open the pores of the Gums , and not only make way for the Pain-causing Humour to pass away , but also excite it to evacuation . Thus a Fumigation is made with the Bran of Wheat , mixt with fine Sugar , which is found to be of use for this purpose . XIV . Greek fires , so called , cannot be quenched with water . Some sorts of Fire , by Authors called Greek-fires , cannot be quench'd with water . These Fires derive this effect from the solidity of their parts , and the swiftness of their Agitation , whereby they beat back the parts of the water . For one of the chiefest things required to the preservation of Fire , is this , that it have a sufficient quantity of earthly particles , which being driven and agitated by the first Element , have the power to hinder the choaking of it by the Air , or other Liquors pour'd upon it . Which force doth most of all abound in Bituminous , Oily and Sulphureous Substances , whereof these Greek-fires are composed . Forasmuch as these , by reason of their Thickness , and the sticking together of their Branchy Parts , are most proper to keep their station , and so to move the water , as to beat back the Aetherial Globuli , which by their irruption might extinguish the Fire . XV. Why Fire is easily quenched in Wine-Cellars . The contrary hereunto happens in Vaults and Wine-cellers , especially when the New Wine is working in the Vessels ; for then not only the Candles that are brought lighted into the Cellar , are extinguish'd , but even Torches also ; because their flames being fill'd with the steams of the New Wine , do not consist of any such matter as is able to repress and put by the Air that hangs over them ; nor are they strong enough to force it to enter into it self . XVI . How Fire is to be struck out of Flint , Steel , Stones , and some sorts of Wood. Fire is struck out of a Flint , with a Steel ; yea one piece of Steel rub'd against another , doth produce fire . There are also some Stones , that are called Live-stones , that being struck with a Nail , or hit with another Stone , do send forth Sparks . And in like manner the Indians also procure fire by joining 2 Sticks together , and then take a 3 d , which they very swiftly twirl about between them , till they be set on fire . The cause of this production of Fire is , because when the hard and brittle parts of the Flint , and the other mentioned Bodies , are hit against by a hard Body , many of the spaces , which lie between their particles , and which were wont to be filled with the Globuli of the 2 d Element , are made more narrow than they were before ; and therefore as soon as the Heavenly Globuli are driven away by the force of the said stroak , nothing remains besides the most subtil matter , for to receive these thick particles , and to turn them round very swiftly . And therefore , forasmuch as the parts of Flint are very stiff , and apt to fly into shivers , they do indeed give way to the force of the stroak , but immediately rebound again ; and thereupon being separated from each other , and hurried away by the motion of the first Element , they turn to Sparks , and constitute the form of fire . And thus in like manner is fire kindled by the vehement rubbing of Sticks against one another ; because by this continued violent motion , their particles are first drawn together , and afterwards being with great force separated from one another , whirl round ; by which means , not only the parts of the Air , but also the Aethereal Globuli , that surround them , are separated from each other ; and being whirl'd round by the vehement agitation of the first Element , turn to sparks , and exhibit the appearance of fire . Thus the Apulians wind Cords about a Stick ; and by swiftly twitching them this way and that way , do set them on fire . XVII . Why Hay , when it is shut up close , grows hot . When Hay is laid up before it is thorow dry , it grows hot , and burns ; which never happens when it is spread in a large and open field . The Reason is , because Hay , whilst it is yet New , doth abound with many Spirits , and several Juices ; which being accustomed to move thorow the pores of the Green Herbs from their Roots , to their upper parts , do still continue in them for some time after that they are cut down . Which as soon as they are shut up in a close place , the particles of these Juices , passing from one Herb into another , do find the pores of them more narrow than they were , by reason of the contraction of their Fibres , so that they cannot enter them , without leaving the Globuli of the 2 d Element behind them ; and being only surrounded with the particles of the first , and so complying with their most rapid motion , are of sufficient force to agitate and heat the thicker parts of the Hay . As for Example , if the Interval , which lies between the 2 Bodies B and C , be supposed to represent one of the Pores of a green Herb , and the small strings 1 , 2 , 3 , surrounded with little round Bodies , exhibit the pieces carried by the matter of the 2 d Element ; and the Interval D and E , another narrow pore of an Herb , that is in part dried , through which the foresaid particles 1 , 2 , 3 , pass , no longer swimming on the 2 d Element , but on the 1 st only : It is evident , that those that are between B and C , must follow the temperate agitation of the 2 d Element ; whereas those betwixt D and E , will be forced to comply with the most swift agitation of the 1 st Element . I said , In case the Hay , before it is fully dry , be laid up in some narrow or close place ; because as long as it is exposed in any open place , the juice which runs through the pores of the Herbs , is easily dissipated in the Air , with out passing through the pores of the other strings , wherein it might excite a heat , and cause a Conflagration . XVIII . What the reason is why Gunpowder is so easily kindled . Nothing is more easily kindled than Gunpowder . The Reason is , because it is compounded of Brimstone , Nitre and Charcoal , which of all things do most easily take fire : For Brimstone , we know , flames immediately , because it consists of particles of sharp juices , which are wrapt about with the thin and close branchy particles of an Oily Matter , so as that many pores between the said Branches , can only admit the matter of the first Element . But Nitre consists of longish and stiff Particles , which being agitated by the particles of Brimstone , do diffuse themselves into a larger space . And seeing that the Charcoal also doth abound with many Pores , the Brimstone and Nitre do readily enter the same , and by them are straitned . By which means it happens , that as soon as any fire toucheth a grain of Powder , composed of these materials , it presently enters the same through the pores of the Coals , and presently agitates the parts of the Brimstone , which afterwards move those of the Nitre and Charcoal . XIX . Some Lamps have been found that have burnt many years in Sepulchers . Authors tell us of Lamps , that of old times were used to be put into the Sepulchers of the Dead , and continued burning many ages , without any diminution of their Light. LUDOVICUS VIVES in his notes upon the XXI Book of St. Austin de Civitate Dei , tells us , That upon the breaking open of a certain Grave , a Lamp was found that had burnt 1500 years , but that as soon as it was touched with the hand it mouldred into the smallest Ashes . FORTUNIUS LICETUS also informs us , that about 100 years since , in the Papacy of Paul III , a Lamp was found in the Sepulcher of TULLIA , Cicero's Daughter , but upon the admission of the Air , and Light , was presently extinguish'd . GASSENDUS reckons these Lamps amongst those Ludicrous Lights , which burn when the Air is shut out , and vanish as soon as it is admitted ; when according to him , they ought to be rather kindled a-new upon the letting in of the Air , and so burn the stronger . But as for my part I see no reason why a fire or flame may not be preserved in subterraneous places , where it cannot be impaired or disturbed by the blowing of the Wind , or the distemperature of the Air. For it may so happen , that the particles of the Soot , which proceed from the Candle or Lamp , may close together about the Flame of the Lamp , and so constitute a kind of little Vault or Arch about it , by which the Air may be kept off from rushing upon the flame , and so overwhelm and choak it . For such an Arch as this would be of use to infringe the force of the flame from kindling the further parts of the Oyl or Wiek . So that by this means the 1 st Element in such a Lamp , being wrapt up round like a Star , would repel the Aethereal Globuli that are round about it , and so diffuse its Light throughout the whole Sepulcher ; which tho' but weak and duskish , yet upon breaking in of the Air , and the dispelling of the Soot , which did encompass it , doth discover a bright and shining Lamp. XX. A Flame proceeding from Spirit of Wine , doth not burn a Linnen Rag , but only the Spirit of Wine it self . The Flame of Spirit of Wine doth not consume a Rag of Linnen . The Reason is , because that to the end a Body may be fit to feed the fire , it must have many particles fit and suited to the fire which it is to preserve , and the same so joined to one another , or to other thicker than themselves , that by the driving or impulse of the particles of the said fire , they may be separated as well from themselves , as from the adjoining Globuli of the 2 d Element , and by this means take upon them the form of fire : Whereas the particles of the Linnen Rag are not thin enough to be agitated by the flame of the Spirit of Wine , and to be separated from one another . XXI . All fat things are not kindled after one and the same manner . For every fire is by so much the more strong and vehement , the more fat and tenacious the matter is that feeds it . Again , amongst fat Bodies , some are much more apt to kindle than others . For Spirit of Wine , the purer it is , and the more highly rectified , the more inflammable it is also , because it hath little or no Phlegm remaining with it . Thus that kind of Stone which is burnt into Quick-Lime , cannot without great difficulty take fire , because its parts being very ▪ closely joined together , the fatness that is contained in them , cannot easily be disentangled or driven out from them , to the end it may be kindled into a flame . Book . 2. Part. 4. Chap. ● G. Freman In ▪ I. Kip XXII . What the Reason is , that sparks of Fire sometimes appear upon strongly Rubbing a Cats Back . When a Cats Back is strongly rubb'd with ones hand , Sparks of Fire seem to proceed from it . The Reason whereof seems to be this , because this Rubbing drives out some Particles of Moisture , and causeth them to be dissipated into the Air ; whereupon the particles of the fire , or if you will , the Sulphureous , greasy Particles , wherewith the Hair and Skins of Animals do abound , and those of Cats more than any other , croud and meet together , whence proceeds fire , and from the fire , light . Now this fiery Steam , or Exhalation , is easily retain'd or kept close in this Thicket of Hair , which consisting wholly of Sulphureous filaments , becomes easily entangled amongst the said Hairs . Which is the true Reason , why a Garment lin'd with Fur doth so obstinately retain the heat committed to it , and keep off the Cold. But it is to be noted , that these sparks of Light , which by stroaking are forc'd from the Back of a Cat , do only appear in the Dark , because a greater Light obscures and swallows them , as the Light of the Sun does that of the Stars . CHAP. VIII . Of Earthquakes , and Subterraneous Fires . I. The Cause of Earthquakes . THe Country of Campagna di Roma , in Italy , Trembled for many days , by an Earthquake in the beginning of the year , when L. CORNELIUS and Q. MINUTIUS were Consuls , and that with such frequent and reiterated Concussions , that , as LIVY acquaints us , the People were not only tired and afflicted with the frequent returns of the Earthquake , but also by reason of the Holy-days that were appointed upon that account , to deprecate the Wrath of Heaven . Some do impute the Cause of Earthquakes to the Sun , as supposing that by his heat , he doth attract those Exhalations out of the Caverns and Holes of the Earth , to the surface of it . But Reason assures us that this cannot be , because the Sun's Rays cannot penetrate so great a Depth of Earth : For tho' the Earthy particles , being beat upon by the Rays of the Sun , do agitate others which are near to them , and to which the Rays themselves ▪ cannot reach ; and these again , others that lye near to them , and so on ; yet is not this Commotion of the parts of the Earth sufficient to kindle a fire in it . Wherefore it seems more Rational for us to attribute the Cause of these Earthquakes to those Exhalations , which mounting through the Chinks and Cavities of the Earth , do there compose fat and thick Fumes , not much unlike to those which proceed from a Candle newly extinguish'd , and fill the whole space that is about it , which by a spark of Fire , either from Flints hitting against each other , or by some Candle that Miners make use of in their labour , are presently kindled ; and being thereby vastly rarefied , shatter to pieces all the confinements of their too narrow Prisons , and force all the Bodies that stand in their way . II. Misnia in Germany , and the Island del Moro , have subterraneous Fires ▪ that burn in the Bowels of them . Thus AGRICOLA tells us , that in the Country of Misnia in Germany , there is a Mountain of Smiths-Coals that burns continually ; where , according as the Flames spread and consume the Coals , the Earth sinks down and leaves deep Holes , which appear like so many burning Furnaces ; the flame whereof sets any fit Matter on fire , that is at 4 Foot distance from them . In like manner , in the Island Del Moro , the Fire bursts forth with such extream Noise , that it equals the Thundering of the greatest Cannon , and with so thick a Smoak , that it may be compared with Midnight-Darkness ; and with such a prodigious quantity of Ashes and Cinders , that Houses are crush'd under the weight of it , Cattle and other Beasts destroyed , and Fresh-waters turned into bitter . Now whenever the Exhalations that are kindled in these Caverns , are not of force enough to break their way through the surface of the Earth , they only produce a shaking or trembling , that is , they only cause the Earth that is above them to rise : In like manner as Gunpowder heaves up the Ground under which the Mines are laid : And the said Exhalations appear outwardly , when they have strength enough to open the ground . III. Why in some Earthquakes there be several successive shakings . In Earthquakes , there are many times repeated shakings succeeding one another . The Reason of this is , because the Matter that is kindled , is not always altogether in one and the same Cavity ; but in many , which are only separated by a little sulphureous Earth : And therefore when the Fire takes in one of these Cavities , it gives the first shake to the Earth , and a second , when it kindles that which is in the next , after having consumed the sulphurour Matter that did separate them , and so on to the very last Cavity . IV. An Earthquake never assaults the whole Earth , but only some particular parts of it . Some parts only of the Earth are shaken in Earthquakes , not the whole Ball thereof . The Reason is evident , for that the Exhalations which abound in the Earth , and which have the power of shaking it , do not every where meet with a space wherein to dilate themselves . For since there are innumerable subterranean Cavities , and various hollows and windings , ready to admit any foreign Bodies , we cannot well conceive them to be all fill'd with the same Matter . For some of them contain Waters , which because of their innate Coldness , and the thickness and foeculency of their parts , do stagnate without any motion . Others are full of a thick and foggy Air , which being pent up within narrow Walls , is never driven out of its Holes without some force . Others again are taken up by fire , or rather fiery Steams and Exhalations ; but such as are shut up in their Dungeons , and being unable to break forth , lye very quiet there without doing any mischief . Now these Steams or Exhalations , pent up within the Bowels of the Earth , from the various coalition whereof , Brimstone , Jews-lime , and other such like inflamable Bodies are made , like a smoaking Torch , are kindled either by another Fire , or by the striking of hard Bodies against one another , or by the mixture of Liquors proper to produce an effervescence , and a consequent flame ; and by means whereof being now more dilated , they push against the sides of their Dungeons and shake the Earth , till at last having broke through their Prison-walls , they burst forth , and rush to take possession of a free and open Career . And forasmuch as these Exhalations are very inconsiderable , and bear no proportion to the whole Globe of the Earth , they can only shake some parts of it , without concerning the whole . V. What places are most subject to Earthquakes . Sea-Coasts of all other places are most subject to Earthquakes , because much fat and slimy Matter flows from the Sea , into the several subterraneous Cavities , which are very proper to feed the Fire . And therefore we find that Earthquakes very seldom are heard of in the Northern parts of the World , especially those that are remote from the Sea ; because they have not Matter enough to produce these Concussions , the same being either drawn off by the heat of the Sun , or else because it is but gradually and in small quantities conveyed from the Sea. To which we may add , that in the Parts now mention'd , there are but few subterranean Caverns to admit this Matter : For this loosness of the Earth , and the wide and open Cavities contain'd in the Bowels of it , do much conduce towards the causing of these Earthquakes ; because fresh Matter is laid up in store in them , for the producing of these Effects . VI. When and where Earthquakes are most frequent . Accordingly we find , that Earthquakes are most frequent in those places where the Earth abounds with Caverns and subterraneous Cavities , which are the proper and fit receptacle for those Exhalations ; except the said Cavities be open towards Heaven , and so afford a free passage for the Exhalations to fly away . Wherefore also Earthquakes chiefly happen , when abundance of such Exhalations are found in the Earth ; as in the Spring and Autumn . VII . What is the Cause of the great Noise that is consequent upon Earthquakes . Every Earthquake is followed by a Noise , not much unlike that of Thunder , which always accompanies , and sometimes goes before it . The Reason hereof is , because the Fire which is rarefied within the Cavities of the Earth , doth rebound and return upon it self : For seeing that in these Caverns there be innumerable winding Passages , which the kindled Exhalations go through , it cannot be but that the sound must needs be multiplied in its passage through them . Thus we know that Eccho's are most frequent in Caves and Hollow places : And thus we find , that from certain crooked Horns , which the Musicians from their windings call Serpents , a kind of Lowing Noise doth proceed , which is only to be attributed to those windings and turnings by which the said found is conveyed to our Ears . Every Earthquake therefore is accompanied either with a greater or less Noise , according as the matter is more swiftly or more slowly kindled , and as the rarefied Exhalations , do break forth with greater or weaker force , and display themselves by many or fewer Concussions . VIII . VVhence that great Fire that proceeds from Aetna and Vesuvius , is caused . The Earth in many places casts forth Fire through the top of many Mountains : Thus Mount Aetna in Sicily , Vesuvius in Naples , Hecla in Iseland , &c. do disgorge Flames , and cover the Neighbouring Countries with Ashes . The Mountain Vesuvius , now called Monte di Soma , according to the Relation of DION CASSIUS did burn in the year that TITUS VESPASIANUS and FLAVIUS DOMITIANUS were the 7 th time Consuls , and breaking forth at the top , at first cast forth Stones , and afterwards such a vast quantity of Flames , that 2 Towns , Herculaneum and Pompeium were thereby consumed ; such thick Smoak , that they darkned the Light of the Sun , and last of all pour'd forth such a storm of thick Ashes , that it cover'd all the Neighbouring Country like a high Snow , and which by the force of the Wind was carried over into Africa . There is no question to be made , but that Fire is generated in the Earth , seeing that a vast quantity of Brimstone and Jews-lime is contained in the same , which are of a very Fat substance above all others , and are most readily kindled : Neither do we find any matter within the Bowels of the Earth , is better suited for the production of Fire ; and therefore we may well conclude , that whatsoever burns , or is hot , is preserved and maintained by the mixture of both these . And therefore no Fire breaks forth any where , neither doth any heat manifest it self , where both of these , or at least the one of them doth not bear sway . The Wind also may contribute not a little to the increase and dilatation of the Fire that lies hid in the Caverns of the Earth , whilst by entring into them , it doth more or less blow them up and kindle them , and makes the flame more violent . IX VVhen Aetna first began to burn . When Fires first began to break forth from this Mountain , doth not appear from History : VIRGIL tells us , that in AENEAS his time , when in his Voyage to Italy he put in at Sicily , Mount Aetna poured forth Smoak and Cinders , with a horrid roaring Noise . And THUCYDIDES acquaints us , that this Mountain burnt in the 76 th Olympiad , that is , 476 years before the Birth of Christ . And several times after that , as in the time of CALIGULA , &c. X. VVhen the Mountain in the Isle of Java began to burn . In the Year 1580 , a Mountain in the Isle of Java , not far from the City Panacura , began to burn , the top of it being burst open with a violent eruption of Brimstone , so that 10000 Persons were consumed in the Country thereabouts , and cast forth vast great Stones upon the City Panacura . Moreover , for 3 days together it sent forth so much thick Smoak , mixt with Flames and Cinders , that it did cover the Sun , and almost turned the Day into Night . XI . Of some Mountains that burnt formerly , and have now ceased . There are found some other Mountains , that now burn no longer . Thus in the Island Queimoda , not far from the Mouth of the River Rio de la Plata , there is a Mountain that burnt formerly , but hath now ceased . So likewise there are several Mountains in Congo and Angola , as also in the Azores , especially those of Tercera and St. Michael , which formerly cast forth flames , whereas now nothing but smoak proceeds from them ; and this , because the Sulphurous and Bituminous matter , which is the most proper to kindle and feed Fire , is quite consumed in them . XII . Why these subterraneous Fires do commonly break forth at the Tops of Mountains . The Reason why these Subterranean flames , do generally get up to the tops of Mountains , and thence make their terrible Eruptions , is to be taken from the Nature of Fire , which being pent up in these Cavities , and not being able to dilate and spread it self , makes a breach in the Walls of its Prison upwards , rather than elsewhere , because there it finds less resistance , and being once broke forth , it continues burning as long as the fewel lasts . XIII . Why the Fire doth not break forth from lower Grounds , as well as from Mountains . Subterraneous Fires seldom break forth from lower grounds ; but very frequently from the Bowels of Mountains . Of this , a twofold Reason may be given ; First , Because Mountains contain many Cavities : And , 2 dly , because those great fragments , whereof the outward Crust of the Earth doth consist , and which are so posited as to lean upon one another , do afford a more easie Egress to the flame , than the other parts . And tho' these Openings of the Earth , do close again , as soon as the flame is broke forth from them ; yet there may be so great a quantity of Brimstone , and Bitumen or Jews-lime carried up from the Bowels towards the top of the Mountain , as may furnish sufficient Matter for a long continued burning . And as for those Steams which are afterwards gather'd again in these Cavities , and kindled , they easily afterwards make their way by the passage that is already open'd for them . XIV . Why these Flames break forth from Mountains only at certain times and seasons . Burning Mountains , after some time cease to cast forth Flame and Smoak , and after this Cessation return to the same task again . The Reason is , because that when the Sides of these Mountains are burst open , Water comes flowing in to the said Cavities , and stops up the Passages to them , so as that the Matter of Exhalations cannot so quickly be gather'd there again , and afford Matter to succeeding flames . It also very frequently happens , that by means of this vehement eruption of flames , the parts of the Mountain are overthrown , and fall down into the bottom of the Deep , from whence the fire did proceed ; and the way for the Exhalations to break forth at , being thus stopt up , no further Burnings can be expected , till a fresh quantity of Brimstone and Jews-lime be gathered and kindled , which by its breaking forth may open those stopt Passages again , by casting up that which obstructed them . And this is the Reason why these Fire-vomiting-Mountains do not always retain the same Bigness : For Vesuvius , in Ancient Times , was of far greater bulk than now it is , and is scarcely an Italian Mile high , all its windings and turnings reckon'd in . Nor will scorcht Aetna ever vomit Flame , Since from beginning 't did not do the same . Ovid. XV. Metamorph. XV. Why upon an approaching Earthquake VVell-water becomes troubled . When an Earthquake is near , the Water of Wells becomes troubled and muddy , and sends forth a stinking smell . This Effect is produced by the steam proceeding from the Subterraneous fire , which like a smoak breaking forth from a piece of Wood that is not throughly kindled , insinuates it self into the narrow pores of the Earth , and mingles it self with the said Well-waters . The said waters do likewise send forth a Noisom smell , because this steam , which ariseth from the Bowels of the Earth , proceeds from sulphureous and bituminous Bodies , wherewith the inward parts of the Earth do abound ; which being of a strong and unpleasant smell , no wonder if their steams communicate a like odour to the waters . CHAP. IX . Of Ashes and Coals . I. VVhy Ashes are called Snow . AShes , or that light powder which remains after that the flame hath consumed all its fewel , in Combustible Bodies , are by Chymists compared unto Snow , and they commonly call it the Snow of the Earth . Because , as Snow doth consist of most small Drops , which by means of a subtil Vapour are woven or entangled together into flocks ; so in Ashes , the smallest particles of the Earth , by a subtil interweaving of filaments , are joyned together in lesser flocks , which may be discerned by the help of a Microscope . II. How it comes to pass , that a Vessel full of Ashes , contains almost as much water , as another Vessel of the same bigness that i● Empty . Ashes soak up so much Water , that a Vessel fill'd with them doth very near contain as much Water , as another empty Vessel of the same bigness . The Reason is , because the Pores that are intercepted between the parts of the Ashes , are like so many flocks , that take in the Liquor poured upon them . And they are perceived to have little Bodies , like to cast Skins that suck in the water , and hide the same within their thin surfaces . But yet we must not from hence conclude with the Peripateticks , that there is the same quantity of water in a Vessel fill'd with Ashes , as there is in an empty one , seeing that the Ashes can scarcely imbibe a 5 th part . III. VVhy Ashes are of use for the cleansing of Linnen and VVoolen . Ashes are of great use for the scouting and washing clean of Bodies . And therefore those who take the spots of Oil , or any other greasy Matter out of Bodies , do make great use of Ashes , by means whereof they restore things to their former cleanness and neatness . The Reason of this Effect is , because Bodies are made smooth by rubbing against one another , and lose all their Roughness : And therefore by the rubbing of Bodies with Ashes , all the dirt and the filth that sticks to them is washt away with ●elp of Water , which is that Vehicle , whereby the Ashes are carried into the most intimate retreats of the Body , where the filth or stains do lurk ; for having some part both of fatness and sharpness , they become entangled with them , and by rubbing fetch out whatsoever Unevenness remains in the Cloth. And thus by the mixture of Ashes and Water , a Lye is made , whilst the water being as it were strained through the pores of the Ashes , and taking along with it their sharpness and fatness , it is made very efficacious for the washing and cleansing of things , from those stains and spots that stick to them . IV. The Ashes of Fig-trees very proper for the washing out of Spots . Hence it is observed , that the Ashes of Fig-trees have a peculiar virtue for the Cleansing of Bodies from filth and stains ; because the leaves and wood , whereof they consist , do abound with fatness and sharpness , or acrimony , which entring into the inmost parts of Bodies , do carry the filth along with them . And it is for the same Reason , that these Ashes are found to be a good Remedy to stop the Fluxes of the Belly , and for the opening of Obstructions , making the Humors to run freely through the Body , and through the passages appointed for them . V. Ashes preserve the Roots of Plants from the cold . The Roots of Plants in Winter are covered with Ashes , to preserve them from being damaged by the cold , and that the melted Snow or Ice running down to them , may not hurt or injure them . The Reason of this common use is , be●●use Ashes are dry , and almost destitute of all m●nner of Juke , and therefore drink up the melted Snow , and hide it within their Pores . For Ashes are not , and are agitated with intestine motions . For as Vinegar and the Lees of Wine , do retain a warming Virtue ; so Ashes are partakers of a Fiery quality , and are endued with a Virtue , that resists the effects of cold . VI. How Ashes contribute towards the making of the Earth fruitful . And for the same Reason it is , that Ashes conduce to make the g●ound fruitful , because of the Salt that is in them . For the Fatness of the Earth is lodged in Salt and Nitre , which being resolved by moisture , and heated by the Sun , doth ferment , and yields new productions . And therefore those Ashes whence the Salt hath been extracted , are of no use for this purpose , which may be prov●d by this Experiment : Dig a quantity of Earth deep out of the Ground , and having divided it into● parts expose them to the Air , the one in the same Condition as it came out of the Ground , and the other washt several times by pouring water upon it , and suffering the same to run through it ▪ And you shall find , that this , latter ▪ will produce nothing , whereas the other will bring forth Herbs , Worms and little Pebbles within some short time after . VII . Why Coals are of a black colour . Coals and all other adust things , as Soot and such like are of a black colour . The Reason is , because there are more Pores in Coals , and also in the burnt parts of Animals and Vegetables , than there were in the same Subjects before the Fire had touched them , and which may be seen in Charcoal , by means of a Microscope . Now this multiplicity of Pores swallows up the Light , and hinders it from being reflected to the Eye . And from the multiplicity and largeness of these Pores , remaining in stead of the grosser matter , that hath been turned into Smoak and Steam , the Lightness of Charcoal doth proceed . VIII . Why Coals keep Fire a great while . Coals do preserve Fire a good while , especially if they be covered with Ashes , and so kept from the Air coming to them . The Reason is , because the Fire which lies hid in the Coals , is lodged in some thin and branchy Particles , which being intangled with others that are thicker , tho' they be most swiftly agitated , yet can only get out successively , that is , one after another . The Fire that is hid within the Pores of any Body , doth stand in need of some time , to have all its Particles dissolved , that by this means it may extricate it self from them ; and probably before they can get thus free , the parts of the Coal must be worn and wasted by a long motion , and every one of them be subdivided into other parts again . But as long as the Air hath free access to Glowing Coals , they are much sooner consumed , because the Air doth by its motion blow away the Ashes , and entring into the Pores of the Coal , dilates them more than ordinary , and so makes way for the Fiery Particles to fly away . IX . How Wood is turned into Charcoal , and how into Smoak and Ashes . Thus a piece of Wood being put into a Vessel and covered with Sand , within a short time after that Fire hath been put under the said Vessel , the Wood becomes turned into Charcoal , if so be the Vessel cover'd with Sand be not presently removed from the Fire , but so ordered that it may cool by degree● , not too suddainly lose all its heat . For if as soon as the Vessel is taken from the Fire , the Sand be removed , the Wood upon the letting in of the Air , will presently begin to Flame , and be wholly resolved into Ashes . Because the Branchy particles of the Wood , become by ●his means sep●rated from each other , and upon the removing of that which hindred , are dissipated in the Air. X. A Live Coal being sprinkled with water , grows the hotter . If a little water be sprinkled upon a ●ive Coal , the heat is thereby encreased . Because the moisture by entring into the Pores of the k●ndled Body , doth drive the Particles of the Fire into the inmost parts of it , and becomes mingled with them , but being forced to return by reason of the predominating heat , it carries the Particles of Fire , which lay hid in the Pores along with it , to the extream parts of the Body . And the same is the reason , why water which extinguisheth small Fires , yet by the fatness which it contains doth make great Fires burn more fiercely , because by the motion of its flexible parts , it carries forth the heat , and raiseth the flame to a greater height . XI . Why Charcoal enters the composition of Gunpowder . In the making of Gunpowder , Charcoal-dust is mixed with Brimstone and Nitre , and being moistned with some Liquor , this Composition is formed into small Grains , which of all other matter do most readily kindle and take Fire . The Reason why Charcoal-dust is made an ingredient of Gunpowder is , because it abounds with Pores , and therefore is most easily penetrable ▪ And no wonder that Charcoal is very porous , seeing that before the Fire had wrought upon it , the Wood it self had many little passages , which afterwards by the operation of the Fire , and the evaporation of so many Particles in Smoak and Steam , were mnch encreased : To which may be added , that Charcoal chiefly consists of 2 kind of parts , whereof the one are Thin and Branchy , which as soon as they come near the Fire are easily kindled ; as having already been agitated by the force of the Fire , but yet continuing entangled together by their slender and manifold Branches , which also would have made their escape , if the quenching of the Fire , had not stopt their flight . The other parts contained in Charcoal are thicker , which if the Fire had acted longer upon them , would have been turned into Ashes . So that in this Composition of Gunpowder , the Branchy Particles of the Brimstone , and the sharp Needles of the Nitre , penetrating into the large Pores of the Charcoal , become entangled with its Branchy parts and closely drawn together , especially by that time they are dried , after that the whole mixture , by the addition of some moisture , hath been formed into small Grains . This composition becomes kindled in this manner ; First , the Fire being applied , immediately kindles the Brimstone , and at the same time puts the Particles of Nitre into motion , which thereupon requiring a greater space wherein to take their turns , do rend the Bands of the Charcoal , and resolve the Grain into Flame and Smoak . For the resistenee of the Charcoal doth greatly promote that swiftness , whereby the whirled Needles of the Nitre do break forth into a suddain Flame . XII . Why Ashes are white . Ashes are commonly of a whitish colour , which grows much darker when water is cast upon them , Ashes are white , because the Particles which constitute them , are Sph●●rical , which our Touch can convince us of , for asmuch as ●hey feel smooth without any roughness at all . And consequently reflecting the ligh● on all sides , they exhibit a white colo●● ; which becomes darker upon the affusion of water , because , moisture , as ha● been said , promotes blackn●ss . XIII . How Wheat comes to grow from the Ashes of it . Credible Authors answer us , that Wheat hath sprung from the Ashes of it Sown in the Gound . The Reason is , because the Salt which remains in the Ashes is a solid substance , and contains a great portion of Earth , and consequently is most proper for the generation of Plants , since it cannot easily be exhaled , and becomes resolved by the force of Heat . Wherefore these rudiments of the Plants remaining in the Ashes , being dissolved by some convenient moisture , and the warmth of the Air , spring forth into a new Plant. Thus Hogs-dung produceth Sowthistles , and that because it is common for those Animals , to feed upon them ; for the Seed of Sowthistles remaining in the Dung , and resolved by heat and moisture , produce other Plants of the same nature . XIV . The Ashes of a Plant contain the principles of a new Plant. Hence it is that if we put the Ashes of any Plant into a Vessel with water , and expose the same to the Air in the Winter-time , as soon as the water is frozen , the resemblance of the Plant will be exprest on the Ice , at least the Leaves of it . Which is a pregnant Argument , that in the Ashes there remains a Principle of a new Life . CHAP. X. Of Glass . I. What Ashes are most proper for the making of Glass . THE most proper Ashes that are known , for the making of Glass , are those of the Herb Kali , and Fern. Tho' the parts of Ashes be very gross and irregular , and cannot , tho' they lean one upon another , so unite together , as to compose a hard Body , because the Air which fills the Pores that are left between them , doth hinder their Rest ; yet the Ashes of the Herb Kali and Fern , are therefore the most proper of all others for the making of Glass , because they abound with abundance of fixt Salts , which are very porous and spungy ; so that when these Ashes are put into a violent Fire , their corners are consumed by it , and by this means the surface of their parts is made so smooth and even , that they touch in more Points than they did before , and afford a free passage to the Beams of Light , and cannot be rendred dark or opake without the mixture of some Forrein Matter . II. Why Glass is Transparent . Glass notwithstanding that it is a hard Body , and made up of the thick and irregular Particles of Ashes , yet doth constitute Transparent and Lightsome Body . The cause of this perspicuity of Glass , may be easily gathered from the make of it . For whilst the matter of it , was by the violence of the Fire reduced to a liquid form , and all its Particles in agitation , the Fire flowing round about them , hollowed many Cavities in them , which the 2 d Element freely entring , diffused the action of Light to all parts , in right Line● . And forasmuch as the said Pords , are after the Glass is made 〈◊〉 〈◊〉 preserved and kept open , by th● i●cessan● passage of the subtil matter , and are filled as before , they cannot but transmit the L●ght as foremerly , so that the same transparency which was in the molten and liquid Glass , remains in the cold and hardned . For this i● a thing common to all Bodies that are melted in the Fired that whilst they are yet in that liquid form their parts do easily accommodate themselves to any Figure , which they retain after that they are grown cold ▪ If at any time any darkness be perceived in Gl●ss , that proceeds from some Dr●g●● Clouds or Bubbles that are mingled in its texture , which since they are much more numerous in thick Glass than 〈◊〉 thin , therefore we must inpute the darkness of thick Glass to them . III Why Glass is Brittle . Glass is very Brittle , and will not suffer it self to be extended , but upon the least stroak breaks to shivers , The Reason is , because tho' Glass be a hard Body , and does consist of parts that are thick enough , yet forasmuch as the surfaces by which they touch one another , are very small , so that they joyn only in Points , for this reason it ●s , that if they be never so little separated from each other , they lose their union and fly into bits . Whereas many soft Bodies are much harder to be broken , because they have their parts so intangled , that they cannot be separated , without the breaking of many of those Branches , by which they were held together . IV. Glass sometimes breaks of it self . It is a thing known by long experience , that Glasses after they have lasted a long time , do at last break of themselves . More particularly this is notorious to them , who grind those Glasses that are used in Prospective Glasses ; for they find that after they have been polished a long time , they slit of themselves . The cause whereof is , because the Saline Particles , being agitated by the subtil Matter , do endeavour to break loose : As may be gathered from hence , that in the Winter season , and Rainy weather , something may be wiped from Glasses , that hath a Saltish taste . And not long since there was a certain man at Amsterdam , who broke Rhenish-wine Glasses only with his Voice , and that not very strong neither , but tuned to a certain Pitch . V. Why Glass that is newly taken out of the Furnace doth break when exposed to the Air. A Glass newly taken out of the Furnace , if it be exposed to the cold Air breaks immediately ; and so likewise if any water be cast upon it . The Reason is , because when the cold doth draw together and narrow the Pores of the Glass , the subtil Matter and the fiery Particle● are by this means lockt up in them : And whilst the former of these press to make their way through the Pores of the Glass , and the others endeavour to get out from it , they by striving to widen the Pores , make the Glass to fly in pieces . VI. A cold Glass ●eld to ne●● the Fire cracks If a cold Glass be held so near to the Fire , that it heat in one part more than in another , it presently breaks . The Reason is , because when the Fire is got in to the Glass , the Pores of it are not all equally dilated by it , and therefore when the subtil matter gets into them , seeing the Pores where the Glass is cold , are not wide enough for its free passage , it makes way for it self by rending the Glass to pi●ce● ▪ But if it be by degrees , and by little and little held b● the fire ▪ it will suffer no hurt at all ; b●cause all 〈◊〉 po●●s will by this means be sufficien●ly 〈◊〉 so as to afford a free and open passage for the subtil matter . And therefore when Glasses that have contained any hot Liquor , are suddainly ●mptied and exposed to the Air , they crack immediately ; because the subtil matter , which is pent up in the pores of Glass Vessels , striving to get out , finds no way for it self , because the pores are constringed by the coldness of the Air ; and therefore makes its way by breaking the 〈◊〉 sides of the Glass . VII . How the breaking of Glasses may be prevented . To avoid this breaking of Glasses , they that belong to the Glass houses ▪ take the Glasses that are newly blown , and set them in a place at some distance from the fire to Neal , as they call it , removing them every 6 hours , the distance of 8 or 10 Foot , before they expose them to the Air ; by which means all the parts of the Glass being insensibly and equally cool'd , there is an equal constriction of the Pores , so as that the subtil matter which can pass one of them , can with like ease pass all the rest . VIII . How Glass comes to have an Attractive Virtue . Glass seems to have something of a Magnetick Virtue ; for when it is strongly rubb'd , so as to be heated thereby , it draws the neighbouring Bodies to it self . The Reason is , because the agitated particles of the 1 st Element , continually pass from the Glass into the Air , and others from the Air return to the Glass , to take up the room of the former ; and because those particles which return from the Air , have not all of them the same degree of Agitation , those which have less , are driven towards the little slits ; which have no correspondent Pores in the Air , and being , as it were , heaped upon one another , do constitute certain wreaths , which in process of time acquire determinate Figures , which afterwards are not easily changed . Wherefore when Glass is strongly rubb'd , so as to grow hot , these wreathed particles being driven out , are diffused indeed through the neighbouring Air , and enter into the pores of Bodies that are about them : But forasmuch as they do not there find an open and ready way for themselves , they return to the Glass immediately , and carry along with them any little Bodies they meet with in their way . IX . Glass becomes variously coloured , by being mingled with Metals . When in the melting of Glass , a Metal is mix'd with it , the parts whereof cannot so easily be smoothed and polished by the action of the Fire , as those of the Ashes are whereof the Glass is made , then the Glass becomes ting'd of divers Colours . The Reason is , because the metalline particles , which are very irregular , do insinuate themselves into the pores of the Glass ; and by this means , make the parts of the 2 d Element , that pass through the same , to move and roll differently from what they did before , and consequently to represent those Colours which are caused by these their different rolings . X. What is the reason of the stifness of Glass . Glass is very stiff , and cannot be bent without the danger of Breaking . Wherefore , if it be never so little bended one way , it presently springs back like a Bow , and returns to its former Figure . The Reason is , because this bending doth somewhat change the figure of the Glass , and straitens the pores of it ; so that the particles of the 1 st Element , that before past through them , finding then way not so easie as before , and yet pursuing their motion as far as they are able , force the sides of them , and endeavour to reduce them to their former figure . For this property of leaping back , is not peculiar to Glass only , but to all hard Bodies , whose particles are joined by immediate contact , and not by the weaving or intangling of Branchy parts . As is evident in a bended Bow of Steel or Wood , which presently leaps back to its former state , except it have continued bent too long ▪ and that the subtil matter hath found or made it self other passages to run through ▪ XI . Why Glass melts by the force of Fire . Glass is melted by the action of fire , and whilst 〈…〉 so , is easily formed into all sorts of figures . The Reason is , because the parts of Glass having been before worn and polished by the force of fire , are easily moved , and obliquely creeping , and flowing one upon another , they begin to touch each other in some small part of their surfaces , and following one another , constitute a fluid Body , which may be formed into any figures , according to the pleasure of the Artist . Moreover this fluid Body , as it grows Cold , becomes tough like Birdlime , so as that it may be drawn into thin Threds ; because as long as that motion is continued in it , whereby its parts do flow ; lying obliquely upon one another , it may the more easily be drawn out into Threds , than it can be broken . XII . Glass beaten to Powder becomes a Poison . Glass beaten into Powder , according to the opinion of some Physicians , becomes Poison . The Reason of this , as I suppose , may be , because the pieces of Glass are hard and sharp , which hurting and wounding the Membrans of the Stomach and Guts , as well as of the other smaller vessels , become destructive to the Body of Man. For I do take Glass , when it is yet whole , to be no Poison at all ; forasmuch as many have swallowed it without any hurt ; which is an argument , that all the hurt that can accrue to our Bodies from Glass , must proceed from the hardness and figure of its little particles . CHAP. XI . Of the Air. I. Why the Air is insipid . THE Air is insipid , and makes no impression on of Taste upon the Tongue . The Reason is , because it swims upon our Spittle , and doth not mingle with it , and therefore cannot affect the Nerves of the Tongue . And hence also we may see the reason why water is insipid ; as likewise why fat Liquors are less discernible by their taste , than dry things . II Why the Air that is nearer to the Earth , is hotter than that which is further off . The Region of the Air , which is nearest to the Earth , is found to be warmer than that above it , where Cold hath a greater dominion , and where Hail , Snow , and other cold Bodies are generated . Book . 2. Part. 4. Chap. 11. G. Freman . In. 〈◊〉 K●p 〈◊〉 III. How the Air may be made more heavy . The Air being thrust and crouded into any vessel , does become more heavy , than that which is diffused in a free and open place . Which GALILAEUS made an Experiment of after this manner . I took , saith he , a large Glass Bottle , and carefully applied to the Mouth of it the Neck of a Bagpipe , by which means I crouded into it a very great quantity of Air ; for because of its easie condensation , 2 or 3 Bottles full of Air were thrust into it over and above that which was in it at first . Now by this Experiment Galilaeus learnt , that the crouded Air had made the Bottle more heavy than before ; and that as soon as the Mouth was unstopt again , the weight of it was again diminished . The Reason is clear and evident ; because in the condensation of Bodies , the parts come nearer together and are more intimately joyned ; And therefore being in greater quantity , they cannot but weigh more than before ; for a greater quantity of Air makes the Vessel more heavy than a less quantity . As will be evident , if this Bottle with Air be fitted to another Bottle full of Water , with a hole at the bottom of it , which may be opened at pleasure : For when the Bottles are thus joined together , and a passage left open for the Air to enter into the Bottle full of Water , as much Water will run out as there was of condensed Air that was crouded into the other Bottle . And therefore we are to suppose , that the quantity of Air , that was with force driven into the Bottle , is equal to the quantity of Water , that was driven out from it through the Bottle . IV. How much the Water is Heavier than the Air. It seems to be difficult to determine how much the Water is heavier than the Air ; forasmuch as the weight of the Air is not the same in all places . Yet may the same be , in some sort , determined from a late Experiment ; by which , well-nigh , all the Air having been contracted out of the great Glass Vessel of the Pneumatick Engin , and the Mouth of it stopt , it was laid in a Scale , to know exactly how much the Vessel weighed without Air ; and afterwards when the Air was let in again , it was weighed a 2 d time , and then found that the Vessel weighed about an ounce and half more than it did before : So that according to this Experiment the Water should seem to be almost 1000 times heavier than the Air. V. A Description of the Pneumatick Engin. For the further clearing of this , and the following Phaenomena , I think it will not be useless to give here a description of the foresaid Engin or Machin . It consists chiefly of 2 parts , viz. of a Syringe or Pump , and a Glass Vessel , which is called a Recipient , whence the Air is pumped . Between the Syringe and the Recipient is a Copper Pipe , through which the Air passeth out of the Recipient into the Syringe ; and in the Pipe is a Peg , by the turning of which the Air is either suffered to pass out of the Glass into the Syringe , or stopt from passing . When therefore the Sucker is pulled up , the lower part of the Syringe is stopt with ones Finger , that the Air may pass out of the Recipient into the Syringe ; and when the Sucker is prest down , then by turning of the Peg the Air is hindred from passing out of the Recipient into the Pump ; and by removing ones Finger , the Air is driven out of the lower end of the Syringe ; the rest will be easily perceived by the Eye , or understood from the Figure . A is the Pump , at the bottom whereof B is a little hole , which is shut with ones Finger , when the Sucker is drawn up ▪ by means of the Handle belonging to the indented Wheel , and of a plate of Iron also indented , which is fastned to the Sucker . When the Sucker is drawn up , the Air rusheth forth out of the Recipient F , through the Pipe I , into the Pump : For then by turning the Peg L , the Air hath an open passage afforded it into the Syringe ; but when the Sucker is thrust downwards , and the Peg turned the contrary way , the Air is stopt from returning into the Recipient ; and then upon taking away ones Finger B , the Air is thrust out through B , and the Recipient , by degrees , is emptied : And this pumping must be reiterated so long , until the Recipient F be emptied of all the Air that was in it . Having thus set down the Frame of this Engine , we will proceed to some Experiments that are made by it . VI. According as the Air i●●ither exhausted or let in , so the Stopple of it is either more hardly , or more easily removed . 1 st . After that the greatest part of the Air , contained in this Engin , is evacuated , the Stopple which shuts the upper Mouth of it , cannot without difficulty be removed , as being prest down with a greater weight ; but is most easily removed , when by turning of the Peg the Air is let in again ; for when that Hole is shut , the outward Air doth more strongly press the Engin , than when it is open . VII . The same effect happens to the Plug . 2 dly . Upon the same Evacuation , the Sucker is very difficultly drawn upwards ; but being drawn up , doth of it self run down again , tho' an 100 pound weight were fastned to it ; because upon the exhausting of the shut up Air , which before ballanced the outward Air , this being now become more heavy , forceth the Sucker to enter into the Pneumatick Pipe , so as that being , as it were , bound with strong Bonds , it cannot be separated . VIII . A Square Glass Bottle breaks upon the evacuation of the Air. 3 dly . A Square Glass Bottle , tho' it be of thick Glass , upon the evacuation of the Air , breaks immediately ; whereas a round Glass , tho' it have a crack in it already , doth not only not break , but also keeps the external Air from entring into it ; because , by how much the External Air doth more press the parts of the Glass , the more they do mutually support each other , as we see it is in arched Roofs , so that none of them can give way : But the case is different in a Square Bottle , which hath much less force to resist , as being unable to withdraw the force and weight of the External Air. IX . A Bladder , upon the evacuation of the Air , swells in the Pneumati●k Engin . Hence it is , that if you tie the neck of a Bladder , after that you have squeezed the Air out of it , and so put it into the Glass Recipient , upon the Evacuation of the Air , that was in the Recipient , you will find the Bladder begin to swell , and to that degree , that sometimes it bursts , with a great noise . The same thing may be seen in the common Torricellian Experiment : For if you put the Bladder of a Carp , almost void of Air , into the Pipe , it is presently blown up , because the remaining parts of the Air , being loosened by the neighbouring Air in the Pipe do extricate themselves . And therefore as soon as the Air is let in again into the Recipient , or into the Pipe , the swoln Bladder immediately falls again . The same thing also happens when the parts of the Air are agitated by Heat ; for we see that a Bladder , which is not above half full of Air , if it be laid near the Fire , is blown up to the utmost , and becomes very hard . X. Aqua Fortis and Vinegar do swell in the Pneumatick Engin. Aqua Fortis , in which a Metal hath been dissolved , and Vinegar impregnated with the solution of Coral , do wonderfully swell in the Recipient , upon the extraction of the Air , and seem to boil ; because the Particles of the Air , that are shut up in the pores of these Liquors , being set at liberty by the pression of the Ambient Air , do diffuse themselves into a larger space . And so likewise it hath been observed , that i● a shrivel'd Apple , be put into the Recipient , after that the Air is drawn out , it becomes plump up again , and looks as fresh , as if it had been but newly pluck'd from the Tree ; and if the Skin of it be broke , a kind of a froth breaks forth from it , as if it were roasted at the Fire . XI . How Bullets are discharged from Wind-Guns by the compression of 〈◊〉 Air. The Air when shut up in any Vessel , and comprest by outward force , becomes endowed with a power to leap back or rebound , as is evident in Wind Guns , from which leaden Bullets are discharged with so great force , as they seem to exceed the force of those that are discharged by Gunpowder . So likewise there are many other Engins , which by compressing of the Air only , cast up waters to a great height . The Reason is , for that when the Air is comprest within these Pipes or Engins , every one of its particles cannot enjoy that round space it stands in need of , to turn round about its own Center ; but other neighbouring particles encroach upon it . And seeing that the same force of heat , or the same agitation of the said Particles , is preserved by the motion of the Heavenly Globuli , and that they cannot freely display themselves , being hindred by their neighbours pressing in upon them , they hit and push one another with their Corners , driving each other out of their places . And thus with united forces strive to recover their former liberty , and a larger space to move in . XII . What is the reason of the suddain and violent eruption of fermented Liquors out of the Bottles , wherein they have been pent up . In like manner small Wines , and new Beer or Ale , being put up into Bottles , break forth , as soon as they are opened with a great force ; because the parts of the Tartar or Wine-Lees , being pent up within the sides of the Bottles , cannot be separated , or flee from one another ; and therefore by means of their intestine agitation , do so cut and divide one another , that tho' they be mixed , yet there is no connexion between them ; which is the Cause , that as soon as the Bottle is unstop'd , they break forth with great noise and violence , in the form of froth . XIII . Why a Blader that is blown up ▪ being struck against the ground ▪ doth rebound again . Thus also blown up Bladders , being struck against the Ground , do rebound again : for the Air being comprest in the Bladder , is agitated by the subtil matter , which is lodg'd between the parts of it ; and striving to recover its former freedom , lifts up the Bladder ; and being unable to bear any greater ▪ compression , beats back the hard Bodies it meets with . The same Elastick Force is clearly demonstrated , by putting a Swines Bladder , distended with Air , into the Pneumatick Engin ; which upon the evacuation the Air , doth ordinarily distend it self to bursting : Sometimes lifts up 50 pound weight , because the shut up Air being delivered from the weight of the External Air , doth endeavour a greater dilatation , and by extricating it self , takes up a greater place . XIV . Why the water is prest ▪ ●●wnward 〈◊〉 ● Weather-Glass , in hot weather . Accordingly also a reason may be given of the descent of the water in a Weather-glass , when it is hot : For the Air that is contained in the Glass , being agitated by stronger Beams of the Sun , or with more Heavenly Matter , doth dilate it self , and consequently bears down the water ; which cause is no sooner removed , and the dilatation diminished , but the water riseth again as before . XV. How it comes to pass , that a weak brittle Glass can resist this Elastick force of the Air. But you 'l say , if the Air ▪ be endued with an Elastick Force , how comes it to pass , that when it is shut up in thin Glass Bubbles or Drops , Hermetically Sealed , it doth ▪ not break through the thin Walls of its Prison ? I Answer , that these weak Bubbles are not broken ; because as the Glass is prest by the inward Air , so in like manner the outward Air dasheth against the said Glass , and because the force is on both sides equal , it cannot break the Glass . For the same reason it is , that Bubbles swimming on the water , continue whole for a considerable time without breaking ; and so making way for the pent up Air to get out . Which could never be , without the pression of the Ambient Air ; forasmuch as the Air , by its Elastick Force , is able to break very thick Glass to pieces . XVI . How the Heaviness of the Air may be proved . Take a Glass Pipe 3 foot long , having one end of it stopt up , and the other open , and fill it with Quicksilver to the top , then turn it with the open end of it downwards into a Vessel likewise full of Quicksilver , so that it may run down into the Vessel . And you will find that the Quicksilver will not descend to the Bottom of the Pipe , but will continue 27 Fingers breadths high , or thereabouts . The weight of the Air is the cause which keeps the Quicksilver at the height , and doth not suffer it to sink lower . For tho' the Quicksilver that is in the Pipe be very heavy , yet can it not run down into the Vessel that lies under it , without raising the Quicksilver that is in it , and consequently the whole Mass of the Air that lies above it . Now the thick and agitated parts of the Air , do hinder its further condensation , because it is not without reluctance that they suffer any compression , and are reduced to a more narrow space and compass . But yet we must not imagine that every Air hath a like force to resist , but that the same varies according to the degrees of its Rarity or Density , that is , its looseness or compactness : For a loose and thin Air , and whose parts are more weakly dilated by Heat , is more easily bent , and doth less resist the pressure of the Quicksilver , than that Air which is more thick , and the Particles whereof are more vehemently expanded . And for this reason it is that the Quicksilver sinks lower in Fair , than in Cloudy and Rainy Weather , and that the Air which is on the top of Mountains , doth less oppose the driving of the Quicksilver , than in a Valley or shady place ; because in this latter place the Air is thicker , and more weakly agitated by the heat of the Sun. Wherefore it is evident that the Quicksilver contained in the Pipe , is kept up by the weight of the Air , and that it would sink till it came to be level with that which is in the Vessel , in case it were not hindred by the weight of the Air that lies upon it . XVII . The Quicksilver in a Weather-Glass is variously raised , according to the Change of th● weather . Thus we experience , that when the North-wind blows , and it is Fair-weather , the Quicksilver riseth higher , and sometimes to 28 fingers breadths ; whereas when the South-wind blows , and in Rainy-weather , the Air is much lighter , and the Quicksilver only riseth to 27 fingers breadths . Thus also by the means of Pumps , the higher that the Quicksilver is in the Bar●metrum , or Instrument to distinguish the weight of thing● , the higher the water riseth , that is , 32 fo●● high , when the North-wind blows ; but during a South or West-wind , and in Rainy ▪ weather , scarcely 31 foot high , and so much the less as the Pump is placed on higher ground . XVIII . The Contact or Connexion of Bodies is caused by the Heaviness of the Air. The mutual contact of Bodies , whence they derive their firmness and connexion , is a pregnant Evidence of the weight of the Air : For we find , that 2 Marble Polisht Bodies , besmear'd with Oil , do sometimes so closely stick together , that a closer Connexion can scarcely be apprehended . But no sooner are these 2 Bodies put into the Pneumatick Engin , but immediately , upon the evacuation of the Air , the piece of Marble that lies undermost , is immediately separated from the upper ; because the Air , that lies under the Lower Marble , doth no longer bear it up , and is no longer able to keep it close joyned with the upper . XIX . How it comes to pass , that sometimes 2 Marbles stick close together in a place that is void of Air. And if at any time it happen , that 2 Marbles stick close together in a vacuum , the Cause is only this , because the subtil Air , which pierceth through the sides of the Glass , doth not find any entrance between 2 exactly polisht Marbles : And therefore the lower Marble cannot fall down without pressing and raising the foresaid Substance , which resists more than it can be pressed by the Body that lies upon it . But when Marbles are anointed with Oil or Spirit of Wine , that by means thereof they may be the more closely glewed together , then , as soon as the Thicker part of the Air is drawn out of the Recipient , Aiery Bubbles do immediately arise from the said Oil and Spirit ; which Bubbles being afterwards dilated by the Elastick virtue of the Aethereal substance , do separate the Marbles , that before stuck together . XX. Why a Bladder fill'd with Air doth sink the slower , the nearer it comes to the bottom of the Water . Hence we may conclude , that a Bladder fill'd with Air requires the greater force to press it downwards , by how much the nearer it comes to the bottom of the Water ; because the Air riseth the more slowly from the bottom of the Water , towards the Region of the Air , by much the nearer it approacheth to it . And the Reason is , because fewer parts of Water do lye upon it , which by lifting up the Bladder or Air from beneath , push it upwards . Wherefore , if we should suppose the Flame to mount up through the Air , quite to the Orb of the Moon , it would still move slower and slower , the higher it ascended ; because the fire doth not mount upwards by any virtue of its own , but is only driven upwards by the Air that surrounds it . For the Parts of the Air that are nearer to the Earth , being more comprest by those that lye upon them , they do with more force push forwards the flame , than when they are more remote from the Earth ; where , because they have fewer parts pressing them downwards , they lye the looser , and consequently drive up the flame more faintly . XXI . By what means the Quicksilver is hindred from sinking lower in the Glass-Pipe . If a Glass-Pipe that is not 27 fingers ▪ breadth long , after the manner as before explained , be filled with Quicksilver , it will not at all sink down in it ; but will continue fill'd in the top , without any subsidence . The Reason is , because the particles of the External Air are so agitated , and do so comply with the motions of the Heavenly Globuli , that they cannot be comprest by the weight of the Quicksilver , that is , less than 27 fingers breadths high , and consequently do so dull its force ▪ 〈◊〉 to hinder its descent . XXII . Why the Water in Pump● cannot rise above 31 Foot high . The Water is raised in Pump● by the motion of the Sucker ; but cannot be raised above 31 foot high . The Water mounts up , together with the Sucker , when it is drawn upwards ; because there is no Vacuum in Nature , and all Spaces are fill'd with Bodies , so that there can be in motion , without a total Circulation of the Bodies , that are about the thing which is moved . And therefore it happens , that as soon as the Sucker is drawn up , it makes the Air that was above the Pump , to move about the midst of it ; and that which was about the midst ●f i● , to come into the place where the water is , which ●●unting upwards comes in the room of the Sucker . For the Water chiefly moves that way , where is ●he least pressure of Air , that is within the Bore of the Pump , which the Sucker hath left . Now the Reason why the water , by means of Pump● , cannot ascend above 31 foot , is , because the Air , by its natural weight , having driven up the water without condensation , and being afterwards unable to bear a greater weight of water , is by the motion of the Sucker shaken with greater violence than ordinary , and by this means plyes and is broken ; and because the subtil matter is driven out above the water in the Bore of the Pump , the water settles at the due height of 31 foot . XXIII . How Sucking is performed . And it is for the same Reason that the water mounts up in a Pipe , upon the sucking of it ; for the Air by its weight presseth all the parts of the Water , or other Liquor that is in the Vessel , in which one end of the Quill or Pipe is dipt , except only those parts which are directly under the Lower-end of the Quill , which is opposite to the upper part of it , which is in the Mouth of him that sucks : Whereupon , as soon as the Muscles have lifted up the Palat and the Breast , the Air within dilates it self , and being dilated , is not of strength enough to hinder the water from entring the Pipe , into which the external Air drives it ; whence it is , that when we suck through a Pipe of a certain length , it is all one as if the Mouth it self were extended so far . And it is by the same Reason , that an Infant , by applying his Mouth round the Nipple of his Mothers Breast , draws the Milk from it . XXIV . Why a mans Hand stretched out in the Air , doth not perceive any weight . A Hand held forth in the midst of the Air , feels no Heaviness ; tho' indeed the Air it self be Heavy , and consequently must needs press the Hand . The Reason is , because the Hand is prest on every side by the ambient Air , and as much by that which is under it , as by that which lies upon it . For the Air which is under the Hand , is driven by the weight of the other parts of the Air that are on the sides of it . Like as the water which answers to the bottom of a fraighted Ship , is driven towards the bottom of the Ship , by the weight of the water that surrounds it at the top . Seeing therefore that the upper Pillar of the Air hath no more Power to drive the Hand downwards , than the lower hath to drive it upwards ; it is no wonder that we are not sensible of any weight , when we reach our Hand out into the Air. Hence it is also , that when we lay our Hand upon the Mouth of a Vessel , whence the Air is extracted , it begins to swell . XXV . VVhy a Glass Vial breaks , when put into the Recipient of the Pneumatick Engin , after that the Air is exhausted . And the same Reason must be given why a Glass Vi●l being put into the Recipient of the Pneumatick Engin , after that the Air is pumped out of it , breaks to pieces ; for seeing that there is no outward Air that might repel the force of the inward , and resist the force of its endeavouring to dilate it self , the Air which is within the Viol , bearing against the sides of the Recipient , hath the power to press and draw i● together , and at last to break it to pieces . XXVI . VVhy the flesh swells upon the application of Cupping-Glasses . And for the same Reason it is , that when the Air is dilated by the Flame in Cupping Glasses that Chyrurgeons make use of , as soon as the Fire is extinguish'd , the Flesh that is contain'd within the Cupping Glass , begins presently to swell ; because that part is less prest upon by the rarefied Air , than that which bears the weight of the outward Air. And this makes it appear , that the Sucker in the Pneumatick Engin , after that the Air hath been exhausted out of the Syringe , the under Orifice whereof is stopt , cannot be drawn up because of the weight of the Air. For the Pillar of Air which is of the same Bulk with the Sucker , must first be removed out of its place . But when this outward Air is extracted , then the Sucker is without any trouble at all drawn out of the Syringe , tho' the lower Orifice be stopt . XXVII . VVhy the water that is in a Glass , doth sometimes appear lower i● the midst , and sometimes higher . The same Reason also must be assigned why water , that is in a Glass or Cup that is not filled to the brim , seems to be low in the midst , and more raised towards the Edge , as hath been already mentioned ; for the middle part of the water is prest on every side , but not the extream or outside parts , upon which the Air exerts its force more weakly and obliquely . But on the contrary , when the Glass is fill'd to the top , the water swells in the midst . For besides that the water cleaves close to the sides of Glass , its middle parts are only comprest by the Air that lies above it , whereas the outsides are prest every way ; and the Air that lies under it , and i● beneath the Horizontal Line , exerts its force upon that part of the water which toucheth the sides of the Glass ; which makes the water strive to get thither , where the pressure is weakest . XXVIII . VVhy the Air grows lighter upon the approach of Stormy VVeather . Before a Shower or Storm , the Air is not so heavy as it was before ; and the same is when the South-wind blows , tho' no Shower follow . The Reason of this seems to be , because the Steams or Vapours which arise out of the Earth , and which mingle themselves with the Particles of the Air , are precipitated , and condensed into Clouds : By which means the upper part of the Air becomes much dilated , and quitting those Bodies that mixed with it , becomes more thin and subtil . For there is no question to be made , but that the Air contains in it self many parts of water , from the Coagulation and Condensation whereof Clouds and Showers are formed . This appears in Mr. BOYLES Pneumatick Engin ; for as soon as the Air enters the void Recipient , it appears , as if it were all covered with a Mist . Book . 2. Part. 5. Chap. 1. G. Freman I I. Kip To the Worshipfull Phillip-Bickerstaff of Chirton in the County of Northumberland Esqr. This Plate is humbly Dedicated by Richard Blome . The Fifth Part OF THE HISTORY OF NATURE . OF Things dug out of the Earth . CHAP. I. Of Metals in General . I. Whence the variety of the Metals that are in the Earth doth arise . THE great use that Metals afford to the Life and Convenience of Mankind , may seem in some degree to excuse their Covetousness , who break up the Bowels of the Earth to come at them . For doth not Gold and Silver furnish us with Mony , Rings , Jewels , and a thousand Ornaments and Utensils , for our Cloaths , Houses and Tables ? And who is ignorant of the absolute necessity of Iron , or of the great usefulness of Tin , Lead and Copper ? Provident Nature having so order'd it , that there should be a variety of Metals , suitable to our several Necessities . The Reason of this multifarious production , must be fetch'd from the different Juices that lodge in the Bowels of the Earth , and are condensed there ; for seeing that to the generation of Metals are required sharp Spirits , Oily Exhalations , and the Fumes of Quicksilver ; these continually ascending from the Bowels of the Earth , to the more Exteriour parts , do there leave the Metalline particles they bring along with them , and according to their difference , are generated a great variety of Minerals , Metals , and other things dug out of the Ground . For as we find , that in the Fruits of Trees , the grosser Matter doth constitute such parts of them , and the more pure and subtil , others : So sometimes in the same Vein many Metals are generated , whereof some require a more crude and less elaborate Matter , as Iron , Lead , &c. and others a better prepared and more refined Matter , as Gold. Which is the Reason why a greater quantity of ignoble Metals are found in the Mines , than of the pure and noble ; forasmuch as Nature needs much more time for the bringing these to Perfection , than the other . II. Why Metals are malleable . All Metals , except Quicksilver , are Malleable . This Property of Metals , is the consequent of their Nature and frame ; for seeing that Metals are nothing else but hard Bodies , composed of many Integral parts , which , as to their figure are long and branchy , it cannot seem strange to any Considerative person , that they are malleable and ductil when they are forged on the Anvil , or drawn into Wire : For it may be easily conceived , that their parts being thus figured , may be so disposed , as that they may glide a good while one over another , or side-ways to each other , without wholly separating from one another . After this manner Lead , Iron , Silver and Gold , more than any of them , may be drawn into Wire , or beat into Leaves , of an incredible thinness . III. Why Metals are found at the Bottoms of Mountains , lying East and South . Mines of Metals are chiefly found under Mountains , and especially in those parts that face the East or South-Sun . The Reason is , because at the bottom of Mountains there be many Cavities and Clefts , in which the sublimed particles of Metal may unite , and mount up together to the outward surface of the Earth , especially in those places which are most expos'd to the Sun , and admit its strongest and greatest heat . For tho' the Sun-beams do terminate on the surface of the Earth , and do not penetrate to the inmost parts of it ; yet is it not to be question'd , but that the Heat produc'd by them , doth reach to the most abstruse and inward parts of it , and most strongly affect those parts which they most directly strike against . For the Earth , by the heat of the Sun , being Cleft into Gaps and Slits , way is made for the more easy mounting of the Juices , that are hid in its Bowels , and which deposit their Burthens , to wit , the Metalline particles they are charg'd with in the Upper parts of the Earth . And for the same Reason it is , that Springs do frequently rise at the Foot of Mountains , because the water finds a more easie passage through , and more ready ascent to them . Wherefore , whensoever any Mineral or Metal is found mingled with the Upper-part of the Earth , we may conclude , that the same was carried up thither , together with the ascending Vapours and Exhalations . IV. What places do most abound with Metals . And this is the Reason why Metals are most frequent in those places , which are most expos'd to the Solar Rays , and which receive most of their heat ; because Heat , by wasting of the moisture , makes such places full of Clefts and Slits , through which the Juices and Metalline Exhalations , may more easily ascend . V. Metals first detected by the Burning down of Woods . Tho' Metals consist of several Juices , and are now generally found in the Mines ; yet it seems very probable , that their first Invention or Detection was owing to the conflagration of Woods . Thus ARISTOTLE tells us , that in Spain , when some Shepherds had set a Wood on fire ▪ which kindled the Earth ●●so , molten Silver was perceived to run down in the same place . Neither will this seem strange to any who shall consider , that in many places the Veins of Metals are found , reaching to the Roots of Great Trees , about which they are wrapped ▪ wherefore when such Trees are burnt down , no wonder if the said Metals , that are entangled amongst the Roots , do melt down with the heat of the fire : In like manner as in the dreadful Fire of London 1666 , the Bells in some Steeples were melted . VI. The Ground that is most rich in Metals , appears outwardly most barren . The Ground which is rich in Mines , is generally Barren : And besides exhales noxious steams and vapours , which are very prejudicial to the health of the Inhabitants , and are the cause of many Diseases . The Reason of this Barrenness is , because the Alimentary Juice , appointed by Nature for the Nourishment of Herbs and Plants , is otherways diverted , viz. to furnish Matter for Metals . And it is for want of this Sap or Juice , that in such places the Trees do languish , Herbs wither , and the Earth it self is bereft of its Vigour , Beauty and Ornament . These parts of the Earth also are more subject to noxious Exhalations ▪ because of the great quantity of steams and vapours that abound within the Bowels of them . For we must not suppose , that all their Matter is spent in the making of Metals , but that the more subtil part of them being agitated by the Matter of the first Element passeth through Clefts to the surface of the Earth , and there mingling with the Air , doth infect the same , and becomes injurious to those that breath in it . This may be seen in most of the Lakes and Pools of Zealand , from whence they dig their Turf , which abound with Bitumen , and in burning give forth a nasty stink : Yea , the steams and fumes that proceed from them , do , as it were , gild over all the Furniture and Utensils of Iron , Copper , Tin and Silver , that are in the Houses where it is commonly burnt , and discolour all things but Gold. VII . Why Metals are found in some Rivers . Metals are sometimes found in Rivers , according to what Historians tell us of the Rivers Tagus , Ganges and Pactolus , as abounding with particles of Gold and Silver , which are gathered by the Inhabitants , and melted down into Ingots . We must not imagin that Metals are generated in these Rivers , as they are in the Bowels of the Earth ; but because the waters of those Rivers runing through the Grounds which abound with Metalick Veins , carry great store of their particles along with them . For Water of it self is not a fit Element for the generation of Metals , forasmuch as nothing can be expected from its onion with Earth , save only a little Mud or Clay . VIII . Why Metals are more capable of Rarefaction , than Condensation . Metals are considerably rarefied by Heat ; but are not subject to be condensed by Cold. The Reason of this is , because Metals are already in the state of the highest compression , and have the whole weight o● the Atm●●ph●●e lying ●●on them . Being there●ore already t●us comprest , they are not capable of any further condensation ; but well of Rarefaction . Thus we observe , that the Air is but little condensed by Cold , but very much rarefied by Heat ; and that whenever it 〈◊〉 freed from the ●eight of the Air that ●●es upon it ▪ it becomes much more extended ; than it can be comprest or condensed by the most strong and effectual Engins . IX . Why Calcined Metals flow like Sand , and being melted , run like water . When Metals are calcin'd , that is , are reduced into Powder , by the means of Corrosive Spirits , they flow in grains like Sand ; but if they be melted , they run like water . The Reason is , because in Calcination they are not resolved into the very least particles they are capable to be resolved into ; but only into small grains , which are still capable of a further dissolution or division . But when the said Grains are dissolved by the violence of fire , they are divided into much smaller particles , and constitute a more continuous Body , like water . X. Why Metals are resolved into Vapours . And much for the same Reason it happens , that Metals , by reason of an Acid sulph●●s ▪ which abounds in them , do fly away with it , and are dissipated into fumes . For when Silver is melted with Lead , as soon as a little Brimstone is cast into it , the Silver vanisheth , and is turned into fumes , except that its flight be stopt by wet Linnen . In like manner , Copper that is mixed with a piece of Gold , and cemented with common Salt , and the Powder of Bricks , it mounts upwards , and carries up some Gold along with it ; except the Pot , in which the Operation is performed , be covered . Because the Particles of the Metals are carried upwards by the force of the Fire , and do not quit their agitation , but by meeting with some cold Body . CHAP. II. Of Quicksilver and Brimstone . I. Why Quicksilver is more heavy than any other Metals , besides Gold. QUicksilver , to which Chymists give the Name of Mercury , is the heaviest of all Metals , excepting Gold : And therefore all other Bodies swim on the top of it , without sinking to the bottom . The Reason of this Ponderosity is , because there are fewer pores in Quicksilver for the subtil matter to pass through , than in other Metals : For the multitude or deficiency of Pores is the only Cause of the Heaviness or Lightness of Bodies . For tho it might be granted , that the Parts of other Metals are of the same bulk and figure , and alike moved ; yet forasmuch as they have many more Pores , they must needs be lighter than it ▪ And this is the only Reason why Gold is heavier than Quicksilver , and sinks down in it , even because it hath fewer Pores , and doth not admit so much of the matter of the 1 st Element ; tho' indeed in this respect it doth not much exceed Quicksilver , seeing that the proportion between them , is as 44 to 43. Which makes me the more admire , what ground PLINY could have to assert , lib. 33. cap. 3. that Gold is not so heavy as Lead , when experience assures us , that Gold is as heavy again , and compared with Blacklead , is as 10 to 6 , and to common Lead , as 10 to 5 ¼ . II. What is the cause of the Fluidity of Quicksilver . Quicksilver is liquid , and except it be contained in some Vessel , it runs away like water . The Reason is , because Quicksilver is divided into many little Particles , which are agitated by peculiar motions differing from one another , and continually shift their places . And tho' it doth not wet or moisten the Hand that handles it , yet cannot this hinder its fluidity : Because Moistness and Liquidity are not one and the same Quality , nor are they of the same Nature . For Fire is liquid , and Molten Metals flow , and yet neither of them can be said to wet or moisten . Forasmuch as nothing else is required to constitute the nature of Fluidity , but the motion of the insensible parts of any Body , or their being so loose , as to be easily put into motion by the subtil mater . The cause therefore of the Fluidity in Quicksilver is , because the Particles whereof it consists , are so smooth and slippery , that they cannot be closely compacted together , and because being thicker than the parts of the water , they scarcely afford any entrance to the Globuli of the 2 d Element , but only to that most subtil matter , which we call the 1 st Element . III. Quicksilver loseth nothing of its weight . Hence it is said , that Quicksilver when put on the Fire , doth not become dissipated into Fumes ; but being received into a Vessel , it soon after returns to the same form it had before , without the loss of any part of its weight . IV. How Mercury may be fixed , and afterwards reduced to its liquid state again . Quicksilver that hath been fixed with Quick-lime , being put into a coated Retort , passeth into the Recipient , and there appears in its former shape . Quicksilver is fixed when the Particles of Brimstone , and of many other ingredients unite themselves with those of the Quicksilver , fixing the Points or extremities of their little Branches , in their Pores ; and if it chance that the Particles of the Quick-lime , being put in motion by the Fire , carry away with them the Particles of the Brimstone , or of any of the other ingredients , that united themselves with those of the Quicksilver , and hindred them from being moved , whether by stopping the passage of the subtil matter , or by rendring their figures too irregular , the Quicksilver returns again to its former state . V. Why the drops of Quicksilver are round . Quicksilver always forms it self into round drops . Because the Intervals , which the Particles of the Quicksilver leave between themselves , are so little , that neither the more gross , nor the more subtil Air can enter them , and therefore can only act upon the surface of it , that is , by continually pushing back the parts of the Quicksilver towards the Center , until the said parts resist them equally on all sides ; which they never do , till they form themselves into a spherical figure . Whence it follows , that the Air must of necessity make the drops of Quicksilver more exactly round , than those of any other Liquors whatsoever . VI. How Quicksilver may be fixed . But notwithstanding the parts of Quicksilver be thus Round , Polisht and Slippery , yet doth not this hinder , but that by means of Quick-lime , Brimstone and other Ingredients , it may be fixed , by darting the extremities of their little Branches into the Pores of it , which makes the surface of them so irregular , that the subtil matter which moved them before , being no longer able to agitate them , the Quicksilver becomes changed into a hard Body . VII . Why a Gold Ring attracts Quicksilver . Quicksilver seems to bear a great affection to Gold ; and therefore they who are anointed with any Mercurial Ointment , if they hold a gold ring in their Mouths , the Quicksilver penetrating through the Body , fixeth it self on the Ring , and maketh it to appear as if it were Silver , but being put into the Fire recovers its former Brightness . The Reason is , because Quicksilver , which we have said to be a Fluid Body , and to have its parts in continual agitation , by a moderate heat doth exhale , and fly away into Fumes , and therefore being mixt with those Steams , which together with the Breath are thrust forth from the Lungs , it is carried upwards to the Mouth , where meeting with the ring , which is a compact and cold Body , it is stopt there , and by the union of its parts returns to its former state ▪ Much after the same manner as water , in an Alembick by heat is turned into Vapors , till meeting with a cold Body , it loseth its agitation , and is changed again into the form of water . The Quicksilver therefore doth not attract the Gold , as some suppose , but only cleaves to it , and by thrusting it self into its Pores becomes coagulated again , and recoves its former state . And therefore Phisicians advise those that have been anointed , with such Mercurial Ointments , to keep a ring of Gold in their Mouths , or to take Gold inwardly , that the Fumes of the Quicksilver may stick to it . And therefore those persons , who do frequently handle Quicksilver , as those who Guild Metals , or are employed in Chymical operations , do commonly hold a piece of Gold in their Mouths , to catch the Fumes of Quicksilver , which otherwise might prove dangerous to their Bodies . VIII . Why Quicksilver betakes it self to Gold. But you 'l demand of me , why the evaporating Fumes or Particles of Quicksilver , do rather tend towards the Gold , than any other way . IX . Gold and Silver are delivered from their dross by ▪ the means of Quicksilver . The Reason is , because the most subtil parts of the Quicksilver , being carried away by the agitation communicated to them , betake themselves that way , where they find it most easy for them to continue their motion ; and it is certain that they can pursue the same more readily in the Gold , than in the Air , because there is nothing in the Pores of the Gold that doth oppose them , whereas the Particles of the Air do continually thwart and cross their tendency . And accordingly we find , that when we handle Quicksilver with one Hand , and have Rings on the other , the same presently become discoloured by the Quicksilver . Whereas formerly the Spaniards at the Mines of Potosi in Peru , did separate the Gold and Silver from the Dross , with incredible charge and labour , Fernandes de Velasco taught them a more compendious way , which they ever since put in practice , to their great profit and advantage . He took Quicksilver and Salt , which he mixed with the Mine , and so put them together into close covered Pots , which he placed in convenient Furnaces , and by this means the Gold and Silver uniting themselves with Quicksilver , became separated from their dross , the Amalgama or mixture of the Quicksilver , and Silver being afterwards cleansed , and made bright by reiterated Lotion X. Litharge mortifies the sourness of Vinegar . Litharge when put into Vinegar , doth take away its sharpness , and communicates a kind of sweet tast to it . The Reason is , because the sharp pointed and unequal Particles of Vinegar , which do constitute its sourness , cleaving to the Particles of the Litharge , are thrust down to the bottom with it , and therefore no wonder , if the Vinegar being freed from those sharp pointed Particles , prick the Gums and Tongue , appear to be of a sweetish tast . XI . Sublimate loseth all is corrosive acrimony , by being sublimed with Quicksilver . If to Mercury Sublimate , which is extreamly corrosive , an equal quantity of Quicksilver be added , and exposed to Sublimation , the Sublimate loseth all its venemous corrosiveness , and becomes insipid , and a good Medicin in many cases . Because the added Particles of Quicksilver , become increased in bulk by the Particles of Salt that are in Sublimate , by why means they become thicker , and their Points are blunted . After the same manner as when Spirit of Vitriol , and Oyl of Tartar per Deliquium , when mingled together lose all their sharpness : For these Salts being of different kinds , the one an acid Salt , and the other an Alkali , are no sooner mixed , but they act upon one another , by which means both their Points are blunted , much in like sort as when by rubbing the edge of one Knife against the other , both thereby become blunted . XII . Quicksilver taken inwardly , in any considerable quantity causeth Death . If a considerable quantity of Quicksilver be taken inwardly , it endangers the Life and often causeth Death . The Reason is , because Quicksilver being a very Heavy and fluid Body , doth easily enter the Veins , and mingling with the Blood , doth interrupt or quite stop its motion . Forasmuch as by the weight of this Metal , the Blood becomes so condensed , and its motion so much retarded , that it cannot furnish Spirits enough to the Brain , for the supply of the Nerves . For the Particles of the Quicksilver , lying upon one another because of their weight , do condense the Blood , and stop its agitation ; and by this means , so small a quantity of Spirits are conveighed from the Brain to the Nerves , that they can only interruptedly , and by intervals fill and distend the Muscles . And this is the true cause , why those who get Quicksilver out of the Miner have their Gums flaggy , and their Teeth loose , because the Mercury entring into the inmost parts of the Body , doth destroy and weaken their connexion . XIII . Quicksilver is very hurtful to the Body of Man by reason of its Acidity . The Miners that labour in the Quicksilver M●nes of Carinthia , and others who are much conversant about Quicksilver , are generally subject to those Diseases , which are caused by the excessive use of Acid things , as with the Palsy , shaking of the Limbs , and other such like Diseases which affect ▪ the Nerves . For Sourness and Harshness , seems to be predominant qualities in Quicksilver . For by its Acidity , it doth corrode most Metals ; and being mixed with Vitriol and Salt , doth provoke copious Salivation ; but when Alkalious or Lixivous Salts are mixed with it , it Salivates less , because these do mortifie the force of Acids . And tho' these Miners fasten Bladders to their Mouths , to keep off the poisonous fumes of this Metal , yet they commonly dye of the Consumption or Palsy ; because Mercury by the tenuity of its parts , doth attack the original of the Nerves , and relaxes the Veins , and above all the Lymphatick Vessels . XIV . How Mercury operates upon the Body of Man. Whence we may take notice that Quicksilver then chiefly exerts its Virtue , when it is divided into the smallest Particles . For seeing that its parts are very Penetrative , they disturb the Mass of the Blood , excite Fermentations , and frequently hurt the Members of the Stomack , whence Bloody Fluxs , Vomiting of Blood , and terrible Gripes do proceed . Because the Blood , which by a continual Circulation runs through the Body , not being able to endure this troublesome guest , and finding it self unable to discharge him by Sweat or Urin , because the Pores of the Skin and Kidnies are too small for that purpose , sends all away by the Caeliacal Arteries , and so causeth a Bloody Flux or violent Loosness . XV. Why Brimstone doth abound in the Country about Sienna in Italy , in some Isslands in Sicily , and in Naples . Brimstone is found in great quantity , in the Country about Sienna , and in several Islands in Sicily , and in Naples , which abound with Subterraneous Fires . The Reason is , because the Branchy Particles of the Exhalations , which in conjunctions with those of sharp and Metallick pieces do constitute Brimstone , are put into motion by the force of the Subterraneous ●eat , and carried upwards to the surface of the Ground , where they are coagulated into a fat and oily concretion , which we call Brimstone . And for the same reason it is , that Grease and Fat , which likewise consist of soft and thin Particles , do affect hot places , as abounding most in those parts , where the heat is strongest , as about the Heart and Reins , and other such like where the heat abounds most . And as the Fat or Grease is generated in the Bodies of Animals , so is Brimstone formed in the Earth , when the most Oily parts , by heat are carried up , and become condensed about the surface of the Earth . XVI . Why Brimstone is so inflamable . Brimstone is very apt to be kindled , and in a moment , as soon as it toucheth the Fire , breaks forth into a Flame . The Reason is , because it consists of the Particles of sharp Juices , which are so intangled with the thin , and close Branches of an Oily matter , that many of the Pares between the said Branches , can only transmit the Particles of the first Element . Now it is evident , that the most thin parts are first put into motion , and seized by the intercurrent matter . And therefore Brimstone is judged by Physicians to be hot in a high degree . But yet we are told , that a kind of Red Brimstone is dug up in Carniola , which neither burns like other sorts of Brimstone , nor hath a stinking smell , but when it is put to the Fire it melts like Wax . And therefore the Romans and Grecians made use of this in the Expiation and Lustration , of their Houses and other Places . CHAP. III. Of Salt. I. Of the several sorts of Salt. THere be different kinds of Salt , which do vary according to the different places of their Generation . There is one sort of Salt that is dug out of the ground , and is called Salt Gem , which is either taken up with Sand , or cut out of Rocks . For there are Mountains of Salt in several places , where Salt is cut , as Stones out of a Quarry , and grows again . Not far from Astracan , there are 2 Mountains so vastly great , and so abounding with Salt , that tho' every day 20000 great pieces of Salt are cut out of them , yet they do not appear the least diminished , the same quantity still growing up in the stead of that which was taken away . Another sort is that we call Sea Salt , which is made by conveighing the Sea-water into certain Beds , where by the heat of the Sun it is turn'd into Salt , by the evaporation of its watry Particles . The last is Spring or Fountain-Salt , which proceeds from Salt Springs or Well-water , and is boiled into Salt. All the difference between Salt that is dug out of the ground , and Sea or Spring Salt , is this , that the first of these , hath no watry parts mingled with it , and therefore doth not stand in need of any evaporation , as the other two sorts do . The Reason of this difference is , because the water consists of 2 sorts of Particles , the one Flexible , the other Inflexible , which tho' they be confounded together , and constitute only one Body , yet do each of them retain their several Nature ; and are never so closely united , but that they may be separated by means of the Fire or the Sun. When therefore the Sea water , which hath been conveighed into Beds , yields Salt , this is not because the Particles of the water are coagulated into Salt , as some suppose , but by the separation of them , forasmuch as the Flexible and Fluid parts are evaporated into Fire , leaving the Stiff and Inflexible behind them . Whence we may conclude , that the different kinds of Salt that are in the World , are such , because of the different figure of their parts : For the Particles of some Salts are like Cylinders , that is , round and long , of an equal thickness : Whereas others terminate in a Point , as may be experienced by the dissolution of them ; and therefore an Acid Salt , will dissolve a mixt Body , which another cannot penetrate . II. How Salt is generated in the Mountains . Salt is generated in Mountains , when the Salt water being conveighed thither in great abundance , and separated from the flexible Particles of the fresh water running another way , the Salt Particles only remain in the cavities that happen to be there , and continually encreasing by the afflux of new Sea water , do at last wholy fill them up . III. Why Salt water is Transparent . Salt water is more Transparent than Fresh water ; as appears , in that the Bodies that are in the Sea , are more distinctly perceived , than in Fresh water . The Reason is , because the matter of the 2 d Element , which is contained within the Pores of Salt water , doth retain more of its motion , than that which passeth through the parts of Fresh water , and consequently is more fit to transmit the action of Lucid Bodies . For water is therefore only said to be Transparent , because the Aethereal matter which fills the Pores of it , can transmit the action of Lucid Bodies . IV. Whence the different Virtue of Salts doth arise . All Salts , not only those of different kinds , but also those that are of the same kind , do differ in their Virtues . For we find , as was said before , that an Acid Salt , will dissolve a mixed Body , which other Salts of the same kind , cannot penetrate nor dissolve . The Reason is , because the insensible parts of an Acid Salt , are of different sizes and figures , according to the different size and figure , of the strait Pores of the inward part of the Earth where they are formed . Therefore it is that Vinegar dissolves Lead , which the Stygian waters cannot do : And Aquafortis dissolves Mercury or Quicksilver , which Vinegar cannot penetrate : Aqua Regalis dissolves Gold , which Aquafortis will not touch ; and on the contrary , Silver is dissolved in Aquafortis , which cannot fasten upon Gold. Now the reason of this variety of effects is , that amongst these Acid Salts , some have long , thick and stiff points , whereas those of others are short , thin , and somewhat flexible , wherefore also their Virtues must needs be different . V. Why Nitre increaseth the heat of Fire , and strengthens the cold of water . Nitre or Saltpeter , which in many things agrees with common Salt , increaseth the heat of Fire , and strengthens the coldness of water . The Reason is , because the Needle-like Particles of Nitre are much more stiff than the sharp pointed Particles of the Fire , which are flexible , and therefore when these stiff Saline Needles , are mingled with those of the Fire , and are whirled about with them , they do much more strongly waste and consume , than the Fire which hath none of these mingled with it . And on the other hand , when these Saline Needle like Particles , fix their points into the Liquid Globuli , they retard their whirling about , and sometimes quite put a stop to it , and by this means it is very probable , that they promote congelation . Neither ought this diversity of effects be matter of any greater wonder to us , than when we see the same heat to soften Wax and harden Clay . VI. Why Nitre cannot be kindled but by a burning coal , or Flame . Nitre cannot be set on Fire by the most intense heat , but with a Flame , or a burning Coal . The Reason is , because there can be no Flame without Brimstone . Now we find , that as soon as any Brimstone is cast into a Crucible , wherein melted Nitre is , a Flame immediately breaks forth from it , because the volatile parts of the Nitre , do afford a vehicle to the Brimstone , by means whereof it flies away in the form of a Flame . And this is the reason , why Nitre cannot be kindled into a Flame , by the most violent heat , but only by Flame , or by casting of a burning Coal into it . VII . Why common Salt crackles when it is cast whole into the Fire , but not so when it is be●ten small . Common Salt being cast into the Fire in whole Grains , crackles , but when beaten into Powder it doth not ; as neither doth that which is generated in Lakes , by the heat of the Sun. The Reason of this is , the rarefaction of the fresh water , which is pent up within the Grains of Salt. For seeing that the parts of Salt that constitute these Grains , are only confusedly joyned together , without any intimate contact , they leave room enough , for some Particles of fresh water to come between them , which as long as they are not agitated , do continue there crowed together : But when they begin to be tossed by a violent heat , they dilate themselves , and breaking their Prison walls , make their escape with a noise . But the smaller Powder of these Grains , as likewise that Salt , which is coagulated on the surface of Lakes , do not make any crackling noise in the Fire , because their Prison walls , are already supposed to be broken , and contain no water , that might be rarefied by the Fire . And hence also it is , that the Particles of Salt that have been dried with a slow Fire , do not melt without great difficulty , because they are destitute of all manner of moisture , and have no Liquor remaining , to promote their Fluxing . VIII . Salt easily turns to a Liquor . Common Salt , Nitre , Salt of Tartar and any other such like , turns to Liquor . Thus the Salt of Tartar , for Example , being set in a Cellar in the Summer time especially , on a shelving plate , or dish , dissolves into a fattish kind of Liquor , which Chymists call the Oyl of Tartar per Deliquium . This effect must be ascribed to the watry Particles that fly in the Air , under the appearance of Vapours . For Salt of Tartar being very ponderous , it is easily penetrated by the watry Atoms that are in the Air , and which afterwards agitating the Particles of the Salt , do separate them from one another . IX . Why comcom Salt Melts being exposed to the Air. For the same Reason it is , that common Salt melts when it is exposed to the Air ; not as if the pure Air , which consists of thinner parts , were able to put the parts of Salt in motion , which it toucheth ; but this is done by the Particles of water , that fly up and down in the Air , in the form of Vapors ; and hence it is , that Salt seldom melts , except the Weather be inclined to moisture . X. Why distilled Salts diss●lve Metals . Acid Spirits distilled from Nitre , common Salt , Alom , Vitriol , &c. dissolve all manner of Metals . Because the Dart-like Particles of these distill'd Salts , entring the Pores of the Metals , do cut and tear them to pieces : For the insensible parts of these distill'd Salts , being in a continual motion cannot enter the Pores of these Bodies without dividing , and breaking them to pieces . XI . Whether flowers may be raised from their Salt. Chymists boast , that they can resuscitate the Flowers of Plants from the Salt that is extracted from them , and restore them to a new life . Tho' this be confidently asserted by some , yet I take it only to be a figment , without any sufficient ground or Foundation . For we experience , that the Spirits distill'd from Vegetables , are endued with very different Virtues from those that are in the Plant , whence they were extracted . Thus we find that Vinegar , Brandy and Wine , which tho' they be the product of the same Grapes , yet differ so much in their Virtues , as that they seem to have nothing common with one another . XII . Whence it is that the Sea water seems to sparkle by night . The Sea water , more especially at sometimes , seems to sparkle in the night . The Reason is , because the Particles of Salt being stiff , and not in a condition to be bent or made plyable by the Action of the subtil matter , when they dash against a Rock , or meet with any hard Body in their way , these Saline ▪ Particles do extricate themselves , from those of the fresh water , with which they were wrapt about , and thus standing singly , and at some distance from one another , they produce the appearance of sparks of Fire , not unlike to those that are struck out of a Flint . But yet all the Saline Particles , that are in the Sea water , do not produce this effect , but only those that move with their points forward . Which is the reason , why these sparks are not seen in all Waves , nor in all the Drops of one and the same Wave . XIII . Why Salt pricks and vellicates the Tongue . Salt put upon the Tongue , as soon as it begins to be dissolved by the Spittle , doth prick and pierce it . Because Salt chiefly consists of slender and ●tiff parts , which bristling their points , do slash and cut the Pores and Fibres of the Tongue . For the Saline Particles are like so many small Darts , which entring the Pores of the Tongue , do with great force vellicate and rend the parts of it . Wherefore they who will not admit that a Salt Tast doth consist in this , that the parts of the Salt , do with their Points prick the Pores of the Tongue , forasmuch as they think they might as well touch the Pores , and Fibres of the Tongue sideways only , without penetrating them with their Points , ought to consider , that a Needle doth not prick but with its point , nor a Sword cut , but with its edge , the other parts of either of these being unable to inflict any wound : So that since a great many of these Points , are found in every crum of Salt , it can no more be conceived , that when the same melts in the Mouth , it should strike none of its little Darts into the Pores of the Tongue , than it can be imagin'd , that a man should be able to walk with his Feet upon Thorns , without being hurt by them . XIV . Why Salt preserves Meat from Corruption . Salt preserves Flesh from Corruption , and in time makes i to grow hard . The Reason hereof may be gathered from the foregoing discourse ; for the parts of the Salt entring point-wise into the Pores of Flesh , do not only rid it of the moisture it did abound with ; but besides are like so many Wedges , driven in between the parts of it , where continuing unmoveable , they support the same , and hinder the more slippery and plying parts of the Flesh , to drive the others they are mixt with , out of their places , and by this means reduce the Body to Corruption . Salt therefore preserves Flesh and other things from Putrefaction , by the hardness and inflexibility of its parts ; even as Boards are strengthened , and made more firm with Nails , and as the stiffness of a Sword keeps the Scabbard from breaking . XV. Salt makes Bodies hard Thus we read that a Girl in Holland , by eating too much Salt became so stiff , and of so dry a Temperament , that she could no longer move the Members of her Body . And from a parity of reason it is , that the Venetians to harden the Wood , wherewith they design to build their Ships , whilst they are yet green , do lay them in water , and keep them there for many years ; because by this means the Salt Alkali , is hindred from exhaling , by which means the Wood is made more hard , and less subject to Corruption . XVI . How Salt promotes the Concoction of Meat in the Stomach . Common Salt helps and furthers the Concoction of Meat in the Stomach , and that because it doth penetrate and divide it by degrees , and so disposeth it for its more ready and speedy Concoction , by the Ferment of the Stomach , and its reduction into the form of Chyle . XVII . Salt makes the water liquid . Tho' Salt makes some Bodies harder , yet it makes the water more liquid ; for the parts of the water being long and pliable , they can easily twirl themselves about those of dissolved Salt , which are long and stiff ; which greatly facilitates their motion , because they move always bended , after one and the same manner : And it is for this Reason , that Salt hinders water from freezing , as Experience teacheth us . XVIII . Salt makes the Earth fruitful , and produceth the same effect on fat or Corpulent VVomen . Salt conduceth to the Fruitfulness of the Earth ; and fat and corpulent Women , who for the most part are barren , by the moderate use thereof , become fruitful . The Reason is , because Salt penetrating into the pores of the Ground , doth suck up the noxious moisture . For Salt hath a signal drying virtue , as hath before been mention'd : And therefore when an Old Vine begins to grow barren , if old Urine be poured to the Roots of it , it will become fruitful ; for being before choaked with over-much moisture , the salt that is in the Urine communicating a new heat to it , which dries up its superfluous moisture , makes it to bring forth copious and fair Fruit. And for the same Reason , the moderate use of Salt may be of good use , to make fat and corpulent Women fruitful ; because Salt , by its drying , heating and abstersive quality , corrects and removes the superfluous moisture of the Womb , which otherwise might hinder the most Spirituous parts of the Masculine Seed from reaching the Female Ovarium . It is also notorious , that Salt , by its acrimony , excites Lust not only in Women , but also in Men. Now that Salt is a great promoter of fruitfulness , may be proved from that prodigious increase of Mice and Rats which is observed in Ships ; and because Women that are employed about Salt-works , are commonly more fruitful than others . And so likewise it is found , that the frequent eating of Oisters , Shrimps , Lobsters , Crabs , and other Shel-fish , do stimulate Venery . For tho' Salt of its own Nature be hard , and being destitute of all motion , may be said to be Cold ; yet if we consider it with relation to the effects it produceth in the Blood , and the whole Body , we must denominate it hot , because it greatly excites and increaseth the heat of the Blood ; forasmuch as it is a great promoter of Fermentation . XIX . A Grain of Salt , mixt with the Oil of a Lamp , hinders it from being so swiftly consumed . A Grain or 2 of Salt being added to the Oil that is in a Lamp , hinders it from being so soon wasted , as otherwise it would . The Reason hereof is , because the Salt being shaken with the heat of the Lamp , becomes dilated , and communicates some adstringent particles , which being conveyed to the wiek , give some stop to the Oil in its passage , and prevent its ascending and evaporating so suddenly , as it would , if there were none of these saline Particles to hinder it . CHAP. IV. Of Gold. I. VVhy Gold is yellow . GOLD is of a yellow Colour , and the same very bright and pleasant . To understand the Reason of this , we are to consider that the Nature of Colours consists in this , that the Particles of the subtil matter that transmit the Action of the Light , are differently received , by reason of the greater or lesser Roughness or Smoothness of the Bodies they light upon , and according as they obtain a stronger or weaker agitation from the manner or modification of their Reflexion ; that is , according as the force of the rotation of the Globuli , that constitute the Rays of Light , doth exceed their motion in right Lines ; or on the contrary . Thus , because the particles which constitute the Texture of Gold , are so very rough and solid , as to produce a reverberation , whereby the Globuli are less twirl'd round , than when they produce a red Colour , and less than when they represent a white ; this makes the surface of Gold to appear of a yellow Colour . For a yellow Colour seems to be nothing else , but a mixture of white and red , as may be proved by the mingling of a red Liquor with a white , whereupon a yellow Colour will ensue . II. Gold struck yields a dull sound . Gold struck with a Hammer , or other Instrument , yields a dull sound . The Reason is , because Gold hath but a few Pores , and those small ones too ; and seeing that the Aiery matter contained in them , is the vehicle of the Sound , when the Body is struck upon , it is very evident , that where the quantity of Pores is less in largeness and number , there must also be a less concussion of the Air , and consequently a weaker impression made upon the Organ of Hearing . III. VVhy Gold cannot be consumed in the fire . Gold being melted by the violence of Fire , is not the least diminished thereby , or loseth any thing of its weight or built . Hence proceeds that Common Saying of the Chymists , Gold cannot be destroyed by Fire ; for tho' it should continue for some Ages in a Furnace , it would not suffer any perceptible loss thereby . The Reason is , because Gold consists of such thin particles , and those so firmly woven together , that they cannot be separated from one another . For tho' Gold , as well as all other Bodies , hath pores for the free passage of the most subtil matter ; yet doth it not admit the Globuli of the 2 d Element ; which makes it extreamly solid , as containing a great quantity of thick matter under a small bulk and surface . Now the solidity of any Body consists in nothing else , but the close connexion of its parts , and the small number of its pores , both which make a Body indissoluble by any outward force . IV. Gold is the Heaviest of all Bodies . Such is the weight of Gold , that it far exceeds that of the most heavy Bodies . According to the Paris Pound , a Foot square of it weighs 1368 pound : And compared with other Bodies , according to the calculation of some Curious Enquirers , if so much Gold weigh 100 Pound , the like quantity of Quicksilver will weigh 71½ ; Lead , 60½ ; Silver , 54½ ; Copper , 47½ ; Iron , 42 ; Common Tin , 39 ; Loadstone , 26 ; Marble , 21 ; Common Stone , 14 ; Crystal , 12⅕ ; Wax , 5 ; Oil , 4¾ . The Cause of the great Heaviness of Gold is , because its Terrestrial and Aqueous parts , or , if you will , its Sulphur and Mercury are more perfectly and exactly mingled , than in any other Bodies ; which is the Cause also , why their pores are less both in number and bulk : For besides this compression and compaction of the parts , we can allow of no other thing to be the Cause of the Heaviness orgreater weight of Bodies . V. Whence the malleability and ductility of Gold doth proceed . Neither is there any Body that is more capable of being divided and dilated , than Gold is , seeing that one Ounce of it only , as PLINY informs us , may be beat out into 750 Leaves , each of them being 4 fingers-breadth square : Yea , some tell us , that an Ounce of Gold may be beaten out to that degree , as to cover 10 Acres of Ground . But tho' this extension of Gold into Leaves be very surprizing ; yet is it not to be compared with that Extension which the Wire-Drawers give to it . For one single grain of Gold , will yield a Thred of 400 Foot long ; so that proportionably an Ounce will afford a Thred of the length of 230400 Foot. The Cause of this vast Extensibility must be ascribed to the softness of its parts , and the singularity of their Texture ; for the softness of the parts of Gold , makes them to yield without separation , so as that those parts which before were close and compact , are now drawn out at length . We experience something like this in Potters-Clay , and fat Earth , wherein tho' there be less of Extension , yet may they , by reason of their softness , be dilated into a considerable amplitude , according to the degree of their closeness and solidity , which furnisheth a sufficiency for the Matter to be extended , and enlarged into a vast capacity of figure . For the closeness and compactness of a Body doth furnish parts , which the more they are diminished in depth , the more they grow in breadth . Thus Geometricians demonstrate , that there may be figures of equal capacity , which yet are of an unequal compass : So that amongst equally capacious figures , those which do most deviate from a Spherical figure , do acquire a greater compass , without any increase of their Capacity , but only differenced according to Length and Breadth ; whereas before it was gathered together about a Common Point . VI. The Connexion of the Parts , doth greatly hinder its divisibility . The peculiar Connexion which there is between the Parts of Gold , doth also greatly oppose their division and separation from one another : So that how much soever it be attenuated with a Hammer , or any other Instrument , it still retains the Connexion of its parts ; and tho' it be not without some little pores , yet are they so entangled and woven together , and become pervious , that the particles of Liquor may run every way through them . VII . Why Gold suffers no diminution in the Fire . From the said close Connexion of the Parts of Gold , it is , as was said before , that it suffers nothing by the Fire ; for tho' the parts of it being put into motion by the Fire , constitute a liquid or fluid Body ; yet hath not the fire the power to separate any of them from one another , or to make them fly away into the Air. Provided it be pure Gold , such as is that which is found in the River Hebrus in Thrace , Pactolus in Lydia , Tagus in Spain , and the River Po in Italy . For whatsoever the Fire can separate from Gold , is something that is of a Foreign and Heterogeneous Nature to it , not being able to diminish or separate the least Integral part of it . VIII . Neither can it be destroyed or spoiled by all the Co●r●●●ve Spirits of the Chymists . And the same may be said of Stygian-water ; for tho' these do with great ease dissolve and corrode other Metals ; yet cannot they enter the impregnable Fortress of Gold , nor with their Dart-like particles , loosen the Texture of its Parts . And tho' Gold may be dissolved in a peculiar Stygian-water , called by Chymists Aqua-Regia , as shall be said hereafter ; yet is not the Gold in the least prejudiced by this Solution , or essentially changed : But may be restored to its former Condition , by pouring some drops of Oil of Tartar , into the Solution , with some Common-water , whereupon the Gold will fall to the bottom , and quit the particles of Salt which kept them suspended in the Menstruum . IX . Why heated Gold doth burn and scorch more intensely , than any other Metals . Molten Gold , or that which is only heated , doth scorch more violently than other Metals , and preserves its heat longer . This Effect is also to be attributed to the Cohaesion of its Parts ; which being fat , and most closely compacted together , do long retain the fire that hath once entred them , and burn the Bodies that touch them more vehemently . For seeing that the Pores of Gold are very small , and only make way for the Matter of the first Element , the Fiery particles become so entangled in them , that notwithstanding their most swift and rapid motion , they cannot in haste disentangle themselves again ; which is the reason that the effect of them is so vehemently imprest upon combustible Bodies that touch it . X. How Gold comes to be dissolved in Aqua-Regia . The Corrosive Spirit , called Aqua-Regia , which is distill'd from equal parts of Nitre and Vitriol dissolves Gold ; but not if you add thereto an 8 th Part of Common Salt , or a 4 th Part of Sal-Armoniack ; for then it dissolves only Lead and Silver . This proceeds only from the various Contexture of these Metals : For Gold hath its pores so disposed , as that the particles of Nitre and Vitriol may easily enter them , if they be alone without any mixture of common Salt , because of the likeness of figure that is between them . Whereas on the contrary the pores of Silver are so ranged , that they cannot admit the particles of Vitriol and Nitre . But the particles of Common Salt or Salt Armoniack being mixed with the Vitriol and Nitre , do so change the disposition of the parts of the Menstruum or Dissolvent , and make them so stiff , as to be able to thrust themselves into the pores thereof , and to dissolve it . There is also another sort of Aqua-fortis made of Nitre , Alom and Vitriol , which dissolves Silver , and is used for to separate it from the Gold that is mixed with it , which it doth not touch . For the particles that are in these corrosive Spirits do dissolve the connexion , which was between the particles of Gold and Silver ; and that because of the different sorts of little Bodies that are found in these Stygian-waters , whereof some do agree with the particles of Silver , and disagree with the particles of Gold ; and others , on the contrary , have an Analogy with the particles of Gold , but do not harmonize with those of Silver . XI . Why the Chymical Prepararation , called Aurum-fulminans , doth make such a great Report , when it is fired . Gold reduced to Powder after a certain manner , and being afterwards kindled , gives a great Report , and like Thunder pierceth and breaks through whatsoever stands in its way , and therefore is called Aurum-fulminans , or Thundering-Gold . This Effect will not appear so strange , if we consider the manner how this Powder is prepared . For first the Gold is dissolved in Aqua-Regia , and afterwards is precipitated with Oil of Tartar , and being taken out and dried , affords a Powder , which when it is heated by the fire , breaks forth into a Flame , with a vehement noise : For all the particles of the Powder , being kindled in one and the same moment , the force of the Flame proceeding from them , opens the pores of the neighbouring Bodies , and dissolves the contexture of their parts , to make way for the Gold that is flying away , which breaks forth with that suddainness and violence , that it seems to imitate the noise of thunder , and the quick Flame of Lightning , both at once . XII . Aurum fulminans exerts its force upwards , as well as downwards Some have supposed , that the force of this Aurum fulminans did only tend downwards : But this is a mistake , and the contrary may be proved by experiment . For if we put 2 grains of this Powder into a Silver Spoon , and cover it with a Crown Piece ; as soon as the bottom of the Spoon is made hot by holding a lighted Candle under it , we shall find not only a deep dint made in the Spoon , but also that the piece of Mony is carried upwards . Which is an evident argument , that the force of this Powder doth not only tend downwards , but is diffused every way . XIII . How this Action of Fulminating Powder may be explained . This Powder is composed of 3 parts of Nitre , 2 parts of Salt of Tartar , and 1 part of Brimstone ; which being heated in a Spoon , flies away with a thundring report . For it seems very probable , that the Brimstone and the Salt of Tartar contain abundance of the first Element in their Pores , which makes their parts very much disposed to swim on the said matter , and to fly away as soon as the volatil part of the Saltpeter is sufficiently agitated by the heat of the Candle , to put them into motion ; and as soon as the Acid Salt of Sulphur is sufficiently divided , for to penetrate the Salt of Tartar. XIV . Why this Powder makes but a little noise , when it is kindled by a vehement Fire . Experience seems to confirm this , for when we kindle this Fulminating Powder with a vehement fire , it makes but very little noise , which probably proceeds from hence ; because the Brimstome having not had time enough to melt , the Acid Salts could not sufficiently divide themselves , in order to their penetrating the parts of the Salt of Tartar ; which makes the Salt to rise with more difficulty , and consequently less able to give a great report . XV. In Gold is hidden a great virtue against many Diseases , if we may believe the assertion of some Physicians . Gold contains a virtue , proper to cure many Diseases . For it is found to afford manifest relief to those that are infected with the Venereal Distemper ; it cures the Elephantiasis , which is supposed to be the same with the modern Leprosie : It fastens loose Teeth , and heals all Ulcers and Sores of the Mouth . But for my part I cannot think that Gold can cure any Diseases in the Body of Man , unless it can be digested in the Stomach , or altered by the heat of the Body . For the virtue of a Medicament consists in this , that the particles of it do insinuate themselves into the Body , expel the noxious humours , or by their congruity , cherish and corroborate the diseased parts . But how can this be done as long as the Gold continues whole and entire , and loseth nothing of its substance ? Is it not notorious that the Leaf Gold wherewith the Apothecaries guild their Pills , doth pass through the Stomach and Bowels untoucht , and is cast out whole with the Excrements ? And yet the said Leaves are so very thin , that if the natural heat could exert any efficiency upon Gold , it would not fail to do it upon them , by reason of their great tenuity . XVI . Whether there be any Potable Gold. Neither is it to any more purpose that Physicians do boast of their Potable Gold , forasmuch as this is found a meer invention of some Mountebanks to pick peoples Pockets . But should we suppose that such a Potable Gold might be prepared , yet would it be of no use in Physick , because there would be no difference between this Potable Gold , and the common Solid Gold , but that the one is compact , and the other in a state of solution or fusion . XVII . If Potable Gold could be had , it would be unprofitable and dangerous to be given inwardly . But you 'l say , that Corrosive Spirits , distilled from Salts , can dissolve Gold , and make it fit for a Medicinal use . I do not deny that Gold can be dissolved in Saline Spirits ; but yet I affirm , that this solution cannot be of any use to the Body for the cure of Diseases , because of the mixture of the said Corrosive Spirits which are of a Deleterious Nature . And tho' it be common with Physicians to order the boiling of pieces of Gold in the Broths and Gellies of their Patients , for the strengthning and reviving of them ; yet is not this their practice founded upon any sufficient experience , that Gold thus used , doth produce this effect ; but only upon an inveterate Tradition received amongst them . For seeing that nothing of the substance of Gold is communicated to these Broths or Gellies , it doth not appear how they can be of any use to the Patient ; so that this custom may very well be reckoned amongst those usages which neither hurt nor help , and are only , as we say , like a Chip in Pottage . XVIII . Whether Lead or Iron may be changed into Gold. Chymists can change Lead and Iron into Gold , of which that famous Nail kept in the Duke of Florence his Repository of Rarities , is a pregnant instance , which is so far Gold , as it was dipt in a certain liquor by a German Chymist . Tho' all persons that see this Nail , generally believe the one part of it to be pure Gold , and to have been made such by a transmutation of the Iron into Gold. Yet for my part , I am more apt to be of TACHENIUS his Opinion , who supposeth that this part of Gold hath been artificially joined to the Iron part of the Nail , by Apposition , without any Transmutation at all . For after that this Artist had thus joined a piece of Gold to the part of an Iron Nail , it was easie for him to give to the Golden part the Colour of Iron , that so the whole Nail might appear to be Iron : But being afterwards put into the Fire , and then held in Oyl for sometime , the superadded part appeared to be true Gold. XIX . Gold is not subject to Rust . Another thing observable in Gold is , that it is not obnoxious to Rust ; and this because no steams proceed from it ; and tho' sometimes it seem to be Tarnisht , this doth not proceed from it self , but from the too frequent handling of it . CHAP. V. Of Silver and Tin. I. Why Silver is hard to melt . SILVER doth strangely resist Fire , and is hard to melt , because its parts being very small and solid , makes a Body so compact and continuous , that the Fire cannot easily penetrate it ; which is the reason that Silver Smiths and others , are obliged to make use of some expedients to make it melt the more readily . II. Why Silver may be beaten into thin leaves . Silver is easily extended under the Hammer , because its parts being long and branchy , they may glide a long while one over another , without breaking asunder . III. Why Silver is of a white colour . The reason of the whiteness of Silver is , the solidity of its parts , which reflect the whole light they have received ; and with the same action wherewith they have received it . For the particles of Silver being of a Spherical Figure , and having a circular motion , consequently make no change in the Rays of Light ; and tho' some of them may be conceived to be rough , yet do they reflect the Rays every way , and send them to the Eye , without any detorsion , or turning of them aside . Yet is not this Colour constant and perpetual to this metal ; for when it is polisht , it loseth its whiteness , and becomes Bright and Shining ; because its white particles do now reflect the Light towards one part , which makes all the other parts to look dark and black , as being hindred to reflect the Beams they have received , to the Eye . IV. How it comes to pass that Silver draws black lines upon Paper . Silver , tho it be white , yet draws black Lines upon Paper ; because by this rubbing of it against the Paper , some small particles of the Silver are rubb'd off ; which forasmuch as they are thin and rough , do as it were imbibe or swallow the Beams of Light , and consequently exhibit a Black Colour But yet they retain something of their former splendor , because some of the greatest particles stick out above the rest ; which preserving their former Texture , do reflect the Rays after the same manner as they did before ; because being very solid , and consequently very capable of being reduced under an even and polisht surface , they resist the Suns Beams ; and causing them to be reflected under the same Angles , as they received them , they produce the sensation of Light , for the reasons we have set down at large in our Institution of Philosophy . V. Why Silver yields a shriller sound than Gold. Silver yields a most shrill sound , and being struck with a Hammer or other Instrument , doth affect the Ears with a more smart and loud noise than Gold. The reason of this is , because Silver is bent like a Bow , whose parts being left at liberty , do presently return to their former state . For it is evident that the Strings of a Lute yield a shriller or more Treble sound , the higher they are wound up , because it is then they are most swiftly moved , that is , make most frequent Excursions . Whereas Gold being softer , and having fewer pores , doth more easily give way to its being struck , and doth more slowly move the Air. Now the swiftness of the trembling motion , or undulation of the Air , makes a shrill or Treble sound ; as the slowness of them , a Base or Deep Sound . And therefore Speaking or Singing makes a greater noise , than a violent Wind , because the Air that strikes the Wind-Pipe , when we are Singing , is much more swiftly moved than the Winds are . Silver therefore gives forth a more shrill sound than Gold , because its bent parts do more swiftly drive the Air , and impart a greater trembling or undulation unto it . VI. If Brimstone be cast upon Silver that is melted , it reduceth it to powder . Melted Silver , by casting Brimstone upon it , becomes turned into a Calx , and is reduced into a small Powder . This Change is brought about by the flaming Brimstone , which enters the pores of the Silver , and mingles with it , and by this means breaks some of the thinner parts of it , or drives some of them away from the rest , leaving the grosser , and in a manner , the whole substance behind . For by Calcination , the Chymists understand nothing else , but the reducing of the Body of a Metal into Powder , by the ridding of it from its volatil parts only . This being the difference between the Ashes and Calx of a thing , that Ashes are the Remainders of those Bodies , whose greatest part hath been consumed by Fire ; but Calx of those Bodies , which do in a manner remain whole and entire after they have been burnt in the Fire . VII . Spirit of Nitre easily dissolves Silver . Silver is readily dissolved in the Spirit of Nitre , or Aqua Fortis , but not in Aqua Regalis , which dissolves Gold. The Reason is , because the Spirit of Nitre hath such an Analogy with the Pores of the Silver , that it enters the same , only accompanied with the matter of the first Element , by which means the particles of it have all the quickness of that Element communicated to them , and thereby is made fit to unravel the whole Texture of that Metal . And the reason why the Aqua Regalis doth not touch Silver is , because the Pores of the Silver are so small , in comparison of those of Gold , that the Royal Water which enters the body of this latter only surrounded with the first Element , cannot penetrate the Pores of the former . VIII . The Pores of Silver are less than those of other Metals . That the Pores of Silver are lesser than those of Gold , and of all other Metals appears in that the particles of Lead in fusion , do mingle and join themselves more readily with any other Metal than with Silver , which they do only slide over . The same may also be gathered from this Experiment , that when we make the Infernal Stone , which is nothing else but Silver , made corrosive by the Salts of the Spirit of Nitre , we find that one ounce of Plate Silver is only encreased 3 drams in weight ; whereas when we employ courser Silver for this Operation , we find the weight augmented no less than 5 drams . Which difference , in all probability , ariseth from hence ; for that Plate Silver , being more fire and pure , hath lesser Pores than the courser Silver , which has an allay of other Metals , and therefore retain more of the acid parts of the Nitre . IX . A Vessel that is tin'd over , doth more resist the Fire than another that is not . Tin , which Chymists , look upon as a middle thing between Silver and Lead , hath properties distinct from them both ; for Vessels that are tin'd over , are found to resist the Fire better than others , and are not so easily melted . The Reason is , because Tin , which abounds with Quicksilver , doth easily stop up the Pores and Cavities of Vessels , and therefore hinders the particles of the fire from separating the parts of it so readily , as they would otherwise do . And therefore Chymists commonly call Tin the Defender of Metals , because it preserves them from the force of the Fire ; for it enters so deep into the pores of the Metals , that it cannot , without extream heat , be expelled thence . But yet if we touch the Tin with a Red hot Iron , it presently melts ; because by this means the particles of the Fire are introduced into the wider pores , which causeth the immediate separation of the parts of it . X. Why Calcin'd Tin is more heavy than that is not . Tin is the lightest of all Metals , but when Calcined it is heavier , than when it is whole and entire . The Lightness of Tin is not to be attributed to the less quantity of moisture it contains , in comparison of other Metals , as Silver , Copper , &c. but to the magnitude of the pores . For seeing that Tin is no simple Body , but contains many Heterogeneous Parts , which cannot so exactly close together , consequently large intervals must be left between them , to be filled with the subtil matter . Now nothing is more evident , than that the Lightness of Bodies proceeds from the magnitude and multiplicity of their pores : And therefore the reason why one Metal is lighter than another , is only this , because it hath more and wider pores , which set their parts at a greater distance from one another . But that Calcined Tin should be more heavy than uncalcined , seems strange , forasmuch as we find the contrary in other Bodies . Thus Dough is more heavy than Baked Bread , and a Calcined Stone is much lighter than another that is not calcined : However no other reason can be assigned hereof , but that the pores of the Tin , by Calcination , are more contracted , which is sufficient to make it more heavy , than it was before Calcination . XI . How Tin may be reduced to Powder . But how comes it to pass , that seeing Tin is malleable , yet it may easily be turned to powder , if being melted , it be stirred continually till it be grown cold . The Reason is , because this continual motion separates its parts one from another , in such a manner , as that they can no longer unite themselves together ; not only because the Air , which is got between them opposeth their union ; but also because their small Branches , being grown Cold , are not pliable enough to entangle one another , and therefore they remain in Powder . XII . Why a Tin Bullet proves more dangerous to the Body that is wounded with it , than a Lead Bullet A Tin Bullet , shot into a Mans Body , makes a more dangerous wound than a Leaden Bullet , tho' they be both of the same bigness , and discharged with the like quantity of Gunpowder . The Reason is , because the outward parts of Tin are more rough , and abound with sharp prominences : By this means , as they enter the Body , they do much more plentifully affect the Fibres , by tearing and rending them to pieces : Or else we may say , that those small Bits and Shavings as it were , which the Bullet leaves in the wound , do infect and taint it ; as we see that the Teeth of a Mad Dog , and of a Viper , do poison the wound , which poison soon after is conveyed throughout the whole Body , and causeth the Death and Corruption of it . CHAP. VI. Of Lead , and Copper . I. Why Lead is so easily melted . LEAD is easily bent , and as readily melted when put upon the Fire . The Reason hereof is , the weak and slender adhaesion of its parts ; for Lead consists of such particles , as are all of them easily separable from one another , and therefore they are no sooner set upon the fire , but that they are immediately put into motion , and readily separated from one another . For soft Bodies differ from Hard , in that the parts of the latter touch one another , and are at rest ; whereas the parts of fluid Bodies , whose Nature soft Bodies partake of , are agitated with various motions , and whirl'd about their own Centers . Lead therefore readily melts , because the fire with great ease enters the pores of it , dissolves its parts , and varies their Position . Hence some have been of opinion that a Lead Bullet might be melted , meerly by a swift motion . But I cannot imagine that this can ever be effected by motion alone ; for it was never found that Lead Bullets were ever found melted upon their being discharged from a Musquet . II. Why Lead is more heavy than Iron . Lead doth not differ from Iron , save only in this , that it consists of parts that are less , and more smooth , and whose Branches are more tender and pliable than those of Iron : For because the parts of Lead are smoother , therefore they lie more close together , and so compose a more compact Body , such as contains more of its own matter than Iron doth under an equal surface . III Why Lead is less hard than Iron . And seeing that the Branchy Particles which constitute Lead , are more soft and pliant , than those that compose Iron , therefore they less resist division , and consequently are not so hard as those of Iron . IV. How Lead comes to be useful in Physick and Chyrurgery . Lead is endowed with a Cooling Virtue , and mitigates the praeternatural Heat excited in Mans Body : Yea some , whose recovery hath been doubted , have been restored to their former health , only by the application of a Plate of Lead ; as it is related of a certain Musician , who wearing a Leaden Plate upon his Breast , only to preserve his Voice , was by the same means cured of a most dangerous disease . The Reason of this Refrigerating Virtue in Lead is , because its parts are very slowly and remisly moved ; and lying upon one another , are in a manner quite at rest . For Cold doth not consist in absolute Rest , or a total privation of motion , but it is sufficient to constitute a Body Cold , if the parts of it be very slowly moved , and that the Organ of him that toucheth it , be more than ordinarily affected therewith . For a Body , whose parts are very swiftly moved , is more sensible of Cold , than another whose parts are more remisly agitated . A Plate of Lead therefore doth cool an overheated Body , because it diminisheth the motion of its particles , and doth mitigate and allay the noxious heat , which consists in motion . Hence it is that Plates of Lead are applied to the Reins of those who are troubled with involuntary Emissions , caused by the heat of their Reins . CALVUS , the Orator , made use of this means to quell and repress the motions of Lust , to the end he might preserve all his Bodily Vigour and strength , for his Study . Chyrurgeons also make use of Lead , for the drying and healing of Wounds ; for by obstructing the pores of the Body , by its coldness , it stops the humour , and hinders it from spreading any further . V. Why Lead , being melted , and stirred with a Stick till it be cold , turns to Powder . Molten Lead , being stirred with a Stick continually , turns into a fine Powder . The Reason is , because by this vehement and continual motion , the more thin and slippery parts of the Lead , that kept the grosser parts together , fly away into the Air ; as we see in Boiling Water , which , when it is stirred , doth send forth a thicker smoak ; for the heat having separated the particles of the Water , many of them fly up into the Air. And thus the more Oily particles of the Lead , being left by themselves , do come nearer together , and are joined together more firmly than ever before , much after the same manner , as by the continual beating and concussion of Cream , its superfluous particles unite together , and constitute the Body of Butter , a-part from the Whey , wherewith they were mingled before . VI. Why Lead cannot be dissolved in Aqua-fortis . Lead is not dissolved in Aqua-fortis , tho' it be left in it never so long . The Reason is , because the Particles of Lead are not proportioned to the bigness or figure of the Particles of that water , or corrosive Spirit , which therefore cannot penetrate them ; or if they do , which indeed seems more probable , they penetrate them accompanied with the matter of the 1 st and 2 d Element , yea , and it may be with the more subtil part of the Air also , which makes the motion of them so slow , that they are not strong enough to break the Ranks and Files of the Particles of the Lead . VII . Why Copper is so hard to be melted except is be kindled with Fire . Copper is accounted amongst the hard Metals , which because of the close connexion of its parts doth long resist the Fire , and is not melted except that it be first kindled , and shed so much Light , as that it appears like a bright shining Star in the Furnace . The Reason hereof is , because the 1 st Element is so shut up in the strait and narrow Pores of the Copper , that the insensible parts of that Metal swim upon it , and are so violently tost together by the said Element , and whirled round about their own Centers , that they affect the Optick Nerve at a distance , and the Nerves of the Touch nearer hand . However when it is thus melted , it cannot endure any moisture to touch it ; for if water be pour'd upon it , or any moist Body be dipt into it , it causeth a great noise , and the Copper leaps out of the Vessel . Because the water which is heavier than it , doth easily enter its Pores , where it becomes dilated because of the intense heat of the Copper , and being not able to continue there by reason of the straitness of the place , it breaks forth with violence , and carries the neighbouring Particles of the Copper along with it , and scatters and spills them : In a manner not much unlike to that whereby Gunpowder , that is covered over with little Stones , as soon as it is kindled , breaks forth with a noise and scatters all the Stones abroad . VIII . Whence the Effervescence or Ebullition proceeds which is seen in the dissolution of Copper . When Spirit of Nitre is poured upon Silver , it presently causeth a great Ebullition , so that it heats the Vessel , and continues till the dissolution of the Metal be performed . The cause of this Effervescence is , because the Particles of the Spirit of Nitre , are of such a magnitude and figure , that they enter the Pores of the Copper only , accompanied with the matter of the 1 st Element , which carries them along with it , with so much swiftness , as that they are able to separate the parts of the Copper , and to cause that Ebullition and heat which upon the solution of the parts is produced . Which is an evident proof , that the Pores of Copper are much more open , than those of any other Metals . For this great Effervence which happens upon the dissolution of Silver in this Spirit , seems probably to proceed from nothing else , but from the largness of the Pores of Copper , which are so great that the acid Particles of the Spirit of Nitre , enter into them surrounded with much of the matter of the 1 st Element . IX . Why Tin and Copper when melted together become so very hard . Copper and Tin being melted together grow very hard , beyond what each of them were apart , before they were mingled . The Reason is , because the Tin doth penetrate and fill up the Pores of the Copper : For certain it is , that Tin is a Metal of such a penetrating subtilty , that it joyns it self with other Metals , after a most peculiar manner ; for it penetrates them even before that they be melted together , and by this means hardens them , as may be seen in Iron , that is tind over , and Pins , which when made red hot in the Fire , are dipt into Tin for to whiten them , and to bring them to that hardness which we find they have . X. Why Copper contracts a Rust call'd Verdigrease Copper easily contracts a Blewish coloured Rust which is proper to it , and therefore called in Latin Aerugo , which grows to it , and sullies it . This Aerugo or Copper rust proceeds from the Exhalations , and Sulphureous Particles , which contiually steam forth from the Particles of the Copper , and stop the Orifices of the Pores thereof . It derives its original from the moisture of the Air , which is mingled with the parts of the Copper , which being put into motion by the subtil matter , doth break forth , and being stopt on the surface of it , doth there grow together into a Rust . After the same manner as we see that an hoary moldiness doth grow on the outside of Flesh , Leather , Bread , and other like Bodies , if they be kept in a moist place , and especially if they be sprinkled with Salt , because the Salt doth open and widen their Pores , and makes an open way for the Sulphureous Spirits to evaporate . Hence it is , that clean and smooth Copper , doth more easily contract its Rust , than that which hath a rough surface ; because in smooth and scoured Copper the Pores are wider , and consequently the moist ▪ Air doth with more ease insinuate it self into them . XI . How Copper Rust is caused , and why Gold is not subject to Rust . This Copper-rust is caused by sprinkling Salt , and Vinegar upon plates of Copper ; because both these do open and widen the Pores of it , and makes a ready way for the steams to come forth : Moreover , this mixture of Salt and Vinegar stops the Particles of these Exhalations on the surface of the Copper , and causeth them to grow together there , so as to cover the top of it . And it is for the contrary reason , that Gold is not subject to any Rust , because no steams proceed from it , so that it is not subject to be sullied or discoloured by any thing that comes from it self . CHAP. VII . Of Iron and Steel . I. How Iron which is so hard a Metal comes to be extended by being made red hot . IRon is the hardest of all other Metals , as being more difficult to be melted than any of the rest ; and yet being put into the Furnace and made red hot , it becomes extended in length . For if we take a Plate of Iron of the same bigness with a piece of Wood , and cast it into the Fire till it be red hot , we shall find upon the taking of it out , that it is grown longer than it was when we put it in . The Reason is , because the Fire that is got into the Pores of the Iron doth widen them ; for seeing that there can be no penetration of dimensions , and that 2 extended substances cannot be in one and the same place , it cannot be , but that the Iron must be dilated by admission of the fiery Particles , and consequently acquire a new Extension . II. Why Iron is one of the lightest Metals . Tho' Iron be hard to melt , yet it is one of those Metals that are lightest , and are most easily dissolved in corrosive Spirits , and destroyed by Rust ; for the small Branches of the parts that compose it , being greater and at a farther distance from one another , than those of the other Metals , make this Metal much more Porous and Spungious , than some of the more compact and solid Metals . III. By what means Iron may be changed into Copper . Iron besmeared with Vinegar and Alom becomes like Copper . At Smolnick there is a Well , the water whereof being turn'd in Channels disposed in 3 rows , turns plates of Iron into Copper . The cause of this Transmutation is not as some would have it , the loss of a former substantial Form , and the generation of a new one , but only an accession of new parts , whilst the Particles of Alom and Vinegar fill the parts of the Iron , and so change the former connexion of its parts . For seeing that Vinegar is of that sharpness , whereby it easily penetrates into the Pores of the Iron , by this its penetration it changeth the order and disposition of them , and by this means a new colour is produced in the Iron . Neither doth the Allom conduce less to this Transmutation , which being endued with a very adstringent Virtue , doth transplace those Particles which before stuck very close together , and were firmly entangled . And therefore it is no wonder , that when the Texture of the parts of Iron is changed , it should by this means come to resemble Copper . IV. Why Iron grows harder by being cast into water when it is red hot . If Red-hot Iron be taken out of a Forge or Furnace , and put into the water , it becomes harder , than when it is only exposed to the Air , and cooled there by degrees . The reason is , because the Pores of Iron when red hot , are very open , and only filled with the matter of the 1 st Element , but mingled with many particles of the 3 d Element , which swimming upon the Fire , do continually enter them , and come out again . Whence it comes to pass , that when , in this state , it is exposed to the Air , to grow cool , the self-same particles of the Air , continuing their course through its pores , cause the pores to be straitned by degrees , and make the parts of the Iron to retain the same Form they had in the Furnace . Whereas , when red hot Iron is plunged into Water , it cannot indeed hinder the matter of the 1 st Element from breaking out from the pores of the Iron ; but because there is nothing that can take up those places , besides the subtil matter which is in the Water , whose particles are too small to keep the pores open in the same manner as they did before , they thereupon become suddainly straitned , and consequently come nearer together ; which is the cause of its attaining a greater degree of hardness ; which is nothing else but a close compression of the parts of a Body , and their mutual contact . V. Why Rust stops , and hinders conception . Rust stops the Courses of Women , and given inwardly , hinders Conception . The Reason is , because Rust consists of Sulphureous , Branchy and Angulous parts , which are very adstringent , and stop-up the Orifices of the Pores they light into . As may be seen in the Hands of those that handle it , which cannot without grat difficulty be washed clean . VI. How it comes to pass that Iron and Steel have Pores turned like Screws . It is found by Experience , that Iron and Steel have abundance of Pores , which are turned and go winding like Screws , and that by means of these , it approacheth to the Loadstone . The cause of these Screw-like Pores that are in Iron and Steel is , those little Striate Particles , which according to what we have delivered in our Institution of Philosophy , continually coming forth from the inward parts of the Earth , and passing into the outward , have so penetrated the substance of the Iron and Steel , as to make passages for themselves through it , which they will still keep open by continuing their motion through them . Which they could not do , without framing the Pores of the Steel and Iron like so many Screws , which differ nothing from the Screw-like Pores that are in the Loadstone , save only in this , that the little Branches of the Particles of the Iron and Steel , which rise in their Pores , stand in need to be beaten down , and smoothed by the Particles of the Loadstone , for to afford them a free passage . VII . Wherein Iron and the Loadstone do agree . And therefore Iron is said to be of kin to the Loadstone , because both of them are dug out of the same Mines , and are of the same colour ; but more especially , because they agree and correspond in their Fibres and Pores : For the striate matter finds a free passage through both of them , much in the same manner , as it doth through the midst of the Earth , which it cannot do through any other Body . Hence Iron is said to cherish and strengthen the Virtue and Life of the Loadstone , much in the same manner , as the water and Virtue of Fountains , is preferved by conveniently disposed Channels for it to pass through . VIII . Why Steel becomes softer by being cooled leisurely and by degrees . Steel that is made by fusion in a vehement Fire , becomes softer if it be made red hot again , and afterwards cooled by degrees . The Reason is , because when it is thus cooled , the cornerd and rugged Particles of it , which by the force of the heat were driven from the surfaces of the Clots of it to the more inward parts , begin to appear outword , and entangling together , do as it were with little Hooks , joyn the Clots of the Steel together : By which means it happens , that these Particles are no longer so closely joyned to their Clots , nor do the Clots any longer so immediately touch one another , but do only hang together as it were by Hooks or Links ; and consequently the Steel is not very hard and stiff , nor brittle , but soft and flexible . In which respect it doth not differ from the common Iron , save only in this , that when Steel is made red hot a 2 d time , and afterwards suddainly quenched , its former hardness and stiffness is restored , whereas by the same means , the same is not performed in Iron . IX . What is the reason that Wood in some Pools is changed into Iron . Some Historians tell us , that Wood by being put into some Pools , becomes turned into Iron . Thus MAGINUS tells us of a Pool in Ireland , into which if a Stake be thrust , that part which is covered with the Mud becomes changed into Iron , and the other that is covered with Water , into Stone . The Reason of this is , because the Wood by being long buried in the Mud , becomes penetrated by a Metallick steam , which insinuating it self betwixt the Fibres of it , becomes one Body with it , and filling up all its Pores by degrees , at last communicates to it the hardness and appearance of Iron . X. How Bones and Wood are sometimes changed into Stone . In like manner , Bones and pieces of Wood are changed into Stone . Thus many Bones are to be seen at Rome , Amsterdam and in other places which have been turned into Stone . Thus pieces of Wood have sometime since been taken up at Aqua-Sparta in Italy , which seem to be nothing else , but the fragments of Stakes , which having for a long time been covered with the Earth , have been so penetrated by a Bituminous and Sulphureous steam , and grown to that Stony hardness , as to be no longer capable of being cleft . Thus likewise Cockle-shells are turned into Stone , by being fill'd with such a kind of Petrifying Juice , which in time reduceth them to the hardness and consistence of Stones . For the same Cockle-shells that abound on the Sea-shoar , have been often found far from the Sea on High Mountains . Thus in the Guerinean Cavern or Grotto , Leaves of Oak , Holm , Alder , Poplar , Bay , Ivy and other Trees have been found turn'd into stone , by means of a Petrifying Humour . XI . Why Steel is more stiff and brittle than Iron . Steel is more stiff and hard than Iron , and hath a greater force to leap back , than any other Metal . The Reason is , because the parts of Steel are not joyn'd together with entangling Branches , as those of Lead are ; but by a multiplicity of surfaces lying one upon another like Glass , which is the reason that when Steel is bent , the ranging of its Parts is not changed , but only the figure of its pores ; upon the change whereof , the force of the Body running against them is increased . And by this means the Steel-Spring of a Watch is of great use to the performing of all the motions of it . And for the same Reason , Steel must needs be more brittle than Iron , because the Drops whereof it is composed , are only joyn'd together by the contact of their surfaces , which , like the parts of Glass , only touch one another in a few Points , and must therefore be somewhat Brittle . XII . How Iron may be preserved from Rust . For the cleansing of Iron from Rust , Ceruss-Plaister , and other such like , are commonly made use of ; but there is nothing that takes it away better or more speedily , than Oil of Tartar , which presently looseth the Rust , and is then easily wiped off . And to prevent Iron from Rusting , there is nothing better than to besmear it with the Marrow of a Deer , or with Oil , which by obstructing the pores by their clammy Matter , hinder any watry Moisture from entring into , or Steams from coming out of them . CHAP. VIII . Of the various Generation of Stones . I. Stones are generated of Sand or Clay . ALL Stones have their Rise either from Sand or Clay ; and that either from Sand dissolved , or Sand consolidated . Stones are generated of dissolved Sand , when any quantity thereof becomes coagulated ; whence therefore proceeds a Stone , transparent like a grain of Sand , and of a different figure , as it is variously compressed by its Neighbouring Bodies : So some Precious Stones are found of no distinct shape or figure , and others that have 6 sides or surfaces . Again , Stones are generated of consolidated Sand , that is , when a great number of the grains of Sand do grow together , by means of Steams or Exhalations filling the Intervals between them , and joyning them together ; and there fore these Stones are opake or dark , and rugged , by means of many Prominences , and therefore may be made use of for the sharpning of Stones . It may be also added , that Stones may be made of Clay , which by the admission of some petrifying Exhalations may become stone . II. Whence it it that some Stones are found in Provence in France , of the figure of a Lozenge , or Quarry of Glass . There is a sort of Stones found in Provence in France , whereof some are Red , and others transparent like Crystal , and of the figure of a Lozenge , which when they are broken , fall into parts of the same figure , tho' subdivided never so often . The Reason of this is to be attributed , to the more perfect and elaborate disposition of the Matter whereof these Stones are generated , which is so regularly distributed , that every one of its least particles bestow their own figure upon the whole , and upon the lesser , as well as greater parts of it . We must therefore suppose , that in the first formation of these Stones , some particles of the petrifying Juice , were by the force of Heat stretched out in length , to which others joyning , themselves , did by degrees constitute some small Tables , to which others afterwards were joyned , lying athwart them , so that the Angles somewhat resembled those of Talk or Izinglass . As we find that in the formation of Salts their basis is of a square figure . Thus the particles of Sal Gem are of a square figure like a Dice , and breaks into Bits of the same figure ; and after the same manner , and for the same Reason , do these Stones before-mentioned break into bits that express the figure of Lozenges , and tho' broke never so small , retain the same figure inviolably . III. What is the Cause of those Glassy-Stones that are sometimes sound in the Earth . Sometimes Glassy-stones are found in the Earth , which do equal others in weight , as well as hardness ; save only that they are brittle like Glass , and are easily broke to pieces . The Original of these Stones must be attributed to Sand , which being melted by a most vehement fire , and afterwards cooled , become as hard as Stone . After the same manner as the particles of Ashes , when agitated by a most vehement fire , have their Ruggedness pared off , and become smooth , and sticking together constitute Glass . Thus it sometimes happens , that after great Burnings of the Earth , many of these Glassy-stones are digg'd forth from the Bowels of it , which are of different shapes and figures , according to the variety of those places into which the melted Salt lighted . PLINY is of Opinion , that the making of Glass was first found out by a Casual melting of Sand and Nitre : It is reported , saith he , that a Merchant's Ship , laden with Nitre , being arrived , when the Ships Company were about to prepare a Feast upon the Shoar , and wanted Stones to fix their Kettles upon , they took great lumps of Salt-Peter out of the Ship for that purpose , which catching fire , and being mingled with the Sand of the shoar , made transparent Rivulets of Liquid Glass to run down . Book 36. Chap. 20. IV. How Stones are generated in the Body of Man. Stones are generated in the Body of Man , differing in bigness as well as hardness : For some of them are easily crumbled to pouder , whereas others are hard , and cannot easily be dissolved . The Original of Stones , that are formed in the Kidneys , or in the Bladder , is the same with those that are generated in the Earth , viz. when by reason of the obstruction of the pores , the grains of Sand are lockt in , and at last growing together , do constitute a hard Body . For it is certain , that the Blood and Urine are strained , and do carry along with them the particles of Terrestrial Bodies , which are endued with such figures , as that when the Blood or Urine are more slowly moved in the Reins or Bladder , they grow into a Stone . For the Sand or Gravel which is generated in the Body of Man , have very uneven and rough surfaces , by means whereof they are easily entangled together , and constitute a mass or lump of Stone . And this is the Reason why they are discharged out of the Body of Man with such extream pain ; for being carried with the Urine , and hitting against the Membrans with their sharp Corners , they rend and tear them . V. Why Women are less troubled with the Stone , than Men. Women are less troubled with the Stone than Men , because they can discharge the peccant Matter with greater ease than they , by reason of the wideness of the Passages through which it is to pass , as also because they are both straiter and shorter , their Terms also being beneficial to them in this case . Moreover it is observed , that Fat and Pursy persons are most troubled with this Disease , because such Bodies abound with Earthy dregs and volatile acids ; as also , for that by reason of the bulk and weight of their Body , they are fain to live an idle and sedentary Life , which alone contributes not a little to the forming of this Disease . VI. Some suppose that Stones are generated in the Body of Man , by a petrifying Spirit . Some suppose that there is a Petrifying Spirit in the Body of Man , which is the Cause of this generation of Stones , more especially in the pores of the Kidneys and Bladder , which transmutes the dreggy and thicker parts of the Blood into Stone , to which formation that Volatile Salt , which is hid in the Stone , and drawn thence by Chimistry , doth not a little contribute ; for by means of these saline Volatile particles , the thicker parts of the Blood are joyned together . Now that there is such a Petrifying Spirit in Nature , may be proved from many Springs , which turn all the things that are cast into them into Stone ; such as is that Spring which is near Bergen in Norway , and many others elsewhere . And therefore some think , that the like spirit may lye hid in the Bodies of Men , seeing that it is evident beyond contradiction , that a spirit not much unlike this is found in it , which changeth the parts of the Chyle into Bones , Gristles , &c. VII . Sometimes the Kidneys themselves , yea , and whole Infants in the Womb , have been turned into Stone . That Stones in the Bodies of Men do sometimes grow to a great bulk , is testified by ISRAEL , a Professour of Heidelberg , who says , that a Woman had a Kidney cut out of her Body , that was wholly turned to stone : Yea , what is far more strange , he tells us , that a whole and entire Birth , compleat and formed in all his parts , and which the Mother had carried in her Body no less than 28 years , was after her Death found as hard as Marble , and taken out of her Body . Which wonderful Effect cannot be ascribed to any thing else , but this Petrifying or Volatile acid Spirit , which is always endued with a great virtue of acting , figuring , and congealing : For the swiftness of this spirit doth readily pass through all pores , and clinging to them , makes the Body to become harder , much like Coral , which being taken out of the bottom of the Sea , is hardned by the Volatile Acid which is lodged in the Air , and becomes stony . VIII . The Stone is esten Hereditary . The Disease of the Stone is frequently conveyed from Parents to their Children ; for seeing that the Particles whereof the Stone is formed , owe much of their tendency towards the producing of this Disease , to the Texture of the Fibres through which they are strained ; and that the same depends on the first forming of the Parts of the Body , which proceeds from the Parents , this Disease may very well be said to be traduced by them to their Posterity . IX . Of a Stone which lies still in Fresh-water ; but being put into Vinegar moves up and down . MERSENNUS makes mention of a Stone , which being cast into Fresh-water lies quiet ; but when put into Vinegar , or Spirit of Vitriol , is moved ; and more in Spirit of Vitriol , than in Vinegar . The Reason of this may be supposed to be , because this Stone is full of pores , which do readily admit the particles of Vinegar and Spirit of Vitriol ; but are not fitted to receive the particles of Fresh-water . So that Particles of Vinegar entring the pores of this Stone , drive out the particles of the Air or Water , which dilating themselves at their coming forth , do lift up and agitate the same . X. Whether it be true that Stone is turned into Wood , not far from Rome Some Historians tell us , that there are certain Quarries of Stone near Rome , the stones whereof are changed into wood . But I should be much more apt to believe , that these Stones are not changed into the substance of Wood , but only represent the outward appearance of it . Much in the same manner as that Vein of Stones which is found at Novigentum , on the River Sein , do imitate the figures of certain Plants and Trees . XI . Of a Stone that being cast into the water , changeth its colour . There is a certain Stone as white as Alabaster , by some called the Eye of the World , which being for some time suffer'd to lye in the water , doth not only become more heavy , but likewise grows transparent , and receives a new Colour . The Reason is , because the Liquor that enters into the pores of this Stone , doth more dilate and diffuse the Light , and refracts the Rays much in the same manner as the grains of Sand might do . For it cannot be doubted , but that this Stone hath many pellucid particles , and that the Air which is got into the pores , being thrust out by the particles of the water , make the stone to lose its transparency , and to be changed into a white Colour ; for as soon as the Stone is dried , it loseth its white Colour , and becomes transparent , as before . XII . How the Stones are produc'd , which are found at the bottom of Rivers . Stones are frequently generated in Rivers ; yea , it hath been found that the whole bottoms of some Rivers have been changed into stone . PATRITIUS tells us , that whilst he studied at Avignon , he frequently went to swim , in the lesser Arm or branch of the River Rhone , and that he found that the Bottom , which he had known before to be soft and smooth , was all cover'd with stone . The Cause of this Change might be from the Earthquake , which sometime before hapned about the shut-up Valley , so called . For the Earthquake might probably cast up a great heap of Sand , which being conveyed from the River Sorga into the lesser Channel of the River Rhone , and setling there , might grow into a great multiplicity of stones . And this Conjecture seems the more probable ; because those who frequent the the River Rhone and Druent , assure us , that they very often found at the Bottom of them , Horsesshoes , shee s , Nails , and other Iron-work , to which the Sands did stick so close , and were grown so thick about them , that they were wholly cover'd with a Crust of stone , by the coalition or growing together of the said Sands upon the Iron . XIII . Whence those Stones proceed , which are found on the surface of the Ground . Great abundance of Stones are frequently found in Fields , that are in all respects like to those that we meet with at the bottom of Rivers ; being of the same bulk and figure , somewhat Oval and inclining to a round figure . It is probable , that these Stones were carried by the force of waters from the Tops of Mountains to the Fields that lye under them , or else by the overflowing of the Rivers . For it is apparent that the Stones which are scattered up and down the Fields of Crautia , come from the overflowings of the Rivers Rhone and Druent , which left Mud and Sand enough behind them , for the forming of the said Stones . For all the Stones that are found there are not equal , but different in bulk , tho' not in figure : For those that are about the midst are bigger than the rest , and are lessened as they withdraw from it ; and those are least of all that are towards the Extream parts ; because the fore-mentioned two Rivers having stagnated there for a good while , more Sand was gathered about the midst , than about the other more remote and outward parts . And that this was the true Cause of the generation of these Stones may be gather'd from hence , that those Plains , which are far remote from any Mountains , are destitute of these Stones , there being not so much as the least footsteps of them to be seen . XIV . What is the cause of these Shells that are found near Bristol . In some places not far from the City of Bristol , are found the shells of Fishes of a different colour and form ; for some of them are twirl'd about like the Tendrils of a Vine ; others , otherwise . As to the Original of these , it seems most probable , that they are not the effect of any Juice or Moisture , but were brought thither either by means of an Earthquake , or an Inundation ; or by the entrance of some foreign Matter into their pores , which sticking there hath rendred them hard and stony . XV. What is the Cause of those Stones which are found in Springs . Stones are likewise found to be generated in Springs ; yea , sometimes the Bottom of them is so full of Stones , that they rise much higher than they were formerly . GASSENDUS makes mention of a Fountain of Dinia , which covers all the Channels it runs through with a Stony Crust . The Cause which generates Stones in Springs , is this : The Waters that constitute these Fountains , running through Rocks , do carry some particles of them along to the said Spring ; which being no longer swiftly agitated , as they were when they were when they passed through the Rocks , begin to settle and grow together . And that some Waters in their passage through Rocks , are impregnated with Stony particles , may be proved from that Fountain which is at Rome , which hath so covered all the sides of the Pipe that it runs through , that it hath long since been quite stopt with a kind of Alabaster . And the same happens in a Grotto near the City Tours in France , where the Drops of Water dropping down , are turned to Stone . XVI . New Stones are formed daily . Wherefore we may conclude with P●ireskius , that all Stones were not created at the Beginning of the World ; but that many are formed in process of time , as owing their original to certain proper Seeds , but their configuration , partly to Nature , and partly to chance . For seeing that a petrifying Seed is found in several places , when the same is received into any Liquor , it immediately coagulates the same , as Rennet doth milk , and imparts a special form to it . XVII . Why Flints are for the most part of a roundish figure . Flints are for the most part of a round figure or approaching to it . The Reason is , because the surface or outward part of the Earth abounding with many Slits , it cannot be , but that the Air which circulates continually in them , must force the parts of Flints , to range themselves into a round figure , because by this means they do less hinder or obstruct its motion . CHAP. IX . Of Pearls and precious Stones . I. Why precious Stones and Pearls have the same figure . GEMS and Pearls are commonly called Stones , but with addition of the Epithet Precious , because they are highly valued , and not acquired without great labor , or high price . Precious Stones agree with Pearls in this , that they have all the same Figure , and tho' they be the product of several places , yet are never of a different form . The Reason is , because Pearls are generated in Shells , that are so smooth and polisht that they shine , which Politeness the Stones , that are generated in them do partake of . For Pearls in their first rise are a kind of swellings like Warts , or excrescences proceeding from the matter of the said Shells , which in progress of time become Pearls . But Gems owe their generation to certain exactly percolated Juices , which being only in small quantity , every drop of them constitutes a particular Gem , and cannot be encreased to a greater number , but by the occasion of more of these drops . And tho' it may be , they may differ in bulk , yet because the action of the subtil matter is the same in them all , they are all of them partakers of an uniform figure . II. Various precious Stones have various figures . Hence it is that all Crystal is 6 cornerd , Emralds cornerd , Diamants and Rubies 8 cornerd , and so for the rest : Because in their coagulation they are split , and multiplied like the Grains of an Ear of Corn , within the same sheath or hull , and that by reason of their special Seeds , according to which Stones obtain as constant Configurations , as either Plants or Animals . Thus we see that Jaspis Stones , Porphyry and Marble are naturally streak'd and embellisht with various colours , waved through one another . And a Nutmeg in divers colours , represents the winding turnings of the substance of the Brain . And the same may be observed in the Oak , Walnut and other Trees , which being sawn into Boards , and plained , exhibit a pleasing Labyrinth of multifariously windings Veins . III. Whence the variety of colours that is in precious Stones doth proceed . Almost all precious Stones do differ in colour , for some of them are perspicuous , others are in a great measure Opake ; neither do those that are Transparent agree in all things . For the Carbuncle is of a Purple Colour , an Emrald Green ; a Saphire Blue , a facinth of a Fiery Yellow , an Amethyst of a Violet Colour , an Opal , various , &c. Precious Stones are Transparent , when the Steams and Vapours whereof the Juices consist , are not congealed till their slippery and fluid particles be exhaled , so as that the Globuli of the 2 d Element can readily pass , and convey the action of Light through them . And on the other hand they become Opake or Dusky , when the said Steams are stopt in some narrow Crevices of the Earth , and become there so entangled with several Terrestrial Particles , that the Globuli of the 2 d Element can have no passage through them . The reason why some Precious Stones are adorned with several Colours , proceeds from the various mixture of Metalline Particles , which variously reflect the Light , and differently affect our Eyes . This is evident from the mixture of Wine and Water , where the Colours of both are so confounded , that the Water espouseth the Redness of the Wine , and the Wine embraceth the Paleness of the Water . IV. This variety of Colours in Precious Stones , proceeds from the various mixture of Metallick Particles . For we observe that coloured Gems are , for the most part , found in Mineral Veins , or near to them ; and sometimes amongst the very Oar of Metals . Thus it is notorious , that Granates are found in the Iron Mines of Norway . And Mr. BOYLE assures us , that Amethysts are drawn out of Iron and Tin Mines . And those who have visited the Copper Mines of Hungary tell us , that besides the Vitriolick Water , which changeth Iron into Copper , there is found another White Water which changeth the remainder into a hard and white Stone : But if before its coagulation it pass through a Copper Mine , then it produceth a Stone called Malochis , of a Blue Colour , which Colour would be Brighter , and of the Tincture of a Turkois , in case this petrifying Juice should happen to pass through a Mine , wherein it meets with any Silver Oar. From all which it appears highly probable , that the Colour of Gems proceeds from the mixture of Metallick Particles . V. What is the Cause of those Spots that appear in some Precious Stones . Stains do arise in some Gems , and Spots in others , as in the Agat , &c. The Reason is , because the juice , whereof they are formed , is gathered together in some receptacles , as it were in a Matrix , and there rests for some time before it is coagulated , by which means , any thing of impurity contain'd in it , doth by degrees sink to the bottom . But if the Juices be congealed before that the Heterogeneous parts be sunk to the bottom , and united into one Mass , the Precious Stones become blemished with several Spots , or Streaks ; thus Flies , Pismires and other Insects are found sometimes in Crystal , because falling into the Petrifying Juice , the same was coagulated into a hard lump , before they had time to settle to the bottom . Yea , Historians tell us , that a Serpent has been found in the midst of a Stone , and a live Toad in the midst of another , without the least footstep of any passage through which the Animal might have entred . VI. Amber is a matter that is dug out of the Ground . From hence we may infer , how fabulous it is what some Authors relate of Amber , that there are some very high Trees in Norway , from whence it distils in the form of a Gum , and that falling down , it becomes hard . Seeing that it is well known , that Amber is dug out of the Earth in Sicily . Which may be farther confirmed from the Flies and other Insects that are found in it . And whereas abundance of Amber is taken up in the Baltick Sea , we must conclude the same to have been carried thither by the force of the Waves , which often driveth it to the Shoar , where it is frequently found . VII . Crystal is frequently found in Mountains . Crystal is found in Mountains , especially those which are continually covered with Snow , and where the most intense Cold bears sway . The Antients were of opinion , that Crystal was generated of Frost and Snow , or as others , that it was nothing but water , congealed to that degree of Hardness , by extream Cold. And accordingly SENECA expresseth himself thus concerning the Generation of Crystal , The Heavenly Water , that hath little or nothing of Earthly Feculence mixt with it , being once congealed , by the obstinate continuance of Frost , grows still harder and harder ; till that all the Air being excluded , it become most closely comprest in it self ; so that that which before was Water , is now become a hard Stone . In the 3 d Book of his Natural Questions . But we have many Arguments to prove this a mistake . First , Because Crystal doth not melt when it is set to the Fire ; neither is any thing diminished by the most intense heat , which yet is the Property of all moisture , that is coagulated by Cold only . Again , if Crystal owes its original to Snow Frozen to such a degree of Hardness , how comes it to pass , that Fire , by a strong Rubbing may be struck out of it ? Who ever could strike Fire out of a piece of Ice , as it may be out of Crystal ? Lastly , if places abounding and covered with Snow , do favour the rise and growth of Crystal , why is it not found in those Mountains where the Snow is perpetual , and where the Cold never suffers intermission ? VIII . The Generation of Crystal is much like that of Sand. Conclude we therefore , that Crystal , as well as other Gems , is the effect of a strained petrifying Juice , and that the same derives its difference in Transparency and Hardness , from the diversity of the matter whereof it consists . We have great reason to believe this , because we find that Artificial Crystal is the product of Sand melted by the help of Salts . And tho' sometimes Crystal be found in Rocks , as if it were something produced by them ; yet is this only to be ascribed to this Petrifying Juice , which falling into the Chinks of Rocks , becomes there congealed , in the form of falling drops . IX . Why the Bottom of Precious Stones is somewhat dusky and dark . From what hath been said , we may understand the reason why Precious Stones have a thick and dark ground : For seeing that the clear Liquor whereof they are formed , doth for some time rest in their peculiar Vessel or Womb , it must needs happen , that whatsoever is impure in the said Liquor , must sink to the bottom ; and this makes the ground of them more dull and dark than the other parts of them . X. Precious Stones are formed of a clear Liquor . Now it is apparent , that not only Crystal but Diamonds and Amethysts derive their original from a Limpid Liquor . But yet we must not imagin , that when they are coagulated , the entire Liquor grows into one Lump or Mass , but that they are all by slits divided into several Stones ; and like the many Grains in an ear of Corn are multiplied within the same Sheath ; so as that according to the peculiar nature of the Seed , they are formed into a different Figure , as was mentioned before . XI . Whether a Diamond cannot be hart by Fire , and yields only to the Blood of a Goat , by means whereof it may be reduced to Powder . The common or vulgar opinion concerning the Diamond is , that it is of an insuperable Hardness , which doth not in the least yield to any Iron Instrument , Hammer or Anvil : No not to the force of Fire it self ; for that being cast into the most violent hot Furnace , it never so much as grows hot ; and yet is reduced to powder , by the newly shed hot Blood of a Goat . These particulars , tho' commonly received , are by experience found to be false ; for it is certain that a Diamond yields both to the force of Fire and Iron . Thus BODINUS assures us in his 2 d Book of Nature , that a Diamond may with a Hammer be reduced to dust , and ground to powder with an Iron Pestel . The Fire also masters it , for by a continual flame it is reduced to a Calx . Neither is that common report truer than all the rest , that if the Powder of it be taken inwardly , it procures the Bloody Flux , since it is certain , that some Servants , to hide their Stealth , have swallowed whole Diamonds , and without the least impairing of their Healths , have voided them again . Yea , The Powder of it hath been given inwardly to the quantity of a whole dram , without prejudicing the Health of the Taker , any more than if he had eaten so much Bread. Cardan . 2 d Book Tract . 5. Contrad . 9. XII . The Electrick Virtue in Diamonds is hangeable . The Electrick Virtue in the Diamond is not always unchangeably one and the same . For Mr. BOYLE hath observed concerning a Diamond of his own , that this Electrick Virtue was frequently changed , being at some times much more strong , than at others . The Reason is , for that a Diamond , tho' it be a Solid Body , and that its parts do seem very closely compacted , yet are not they altogether free from some inward motions ; it being very probable that there are no Bodies so solid , but that their parts are more or less partakers of some motion . Now supposing this intestine motion in Bodies , it cannot seem strange , that upon the changing of the Texture of their parts , their virtue should be changed also . Besides the changes of Colour that are observed in a Diamond , are an evident proof of the motion of its parts ; because being rubb'd , it shines and sparkles much more bright and briskly at one time than at another ; which change cannot be without motion . XIII . What is the Reason of the Sparkling Brightness of a Diamond . A Diamond sparkles the brightest of all other Precious Stones , and striks the Eye with the most brisk and dazling splendor . The Reason is , because it consists of a most pure Juice , whose parts are so divided by straining , that they Reflect and Refract the Rays they have received from all sides of them . For all the particles of it are as so many Looking-Glasses , which reverberate the light after the same manner as they receive it . This effect may also be ascribed to the Tincture , whereof it is capable in a high degree , not because of any connate likeness , as some suppose ; but because such is the disposition and situation of its parts , that all the strokes of the Tincture do appositely agree together , and take up all the Pores of it ; which how much it doth conduce to the Reflexion of the Rays of light , those who are any thing versed in Opticks , cannot be ignorant of . XIV . Precious Stones do not always afford the same appearance . Mr. BOYLE makes mention of a Turcois , which frequently changed its Colour , and afforded a different representation to the Eye . For after that it had caused a Painter to express most exactly the Colour of it , he found that at other times , it not only appeared to him variously from what it appeared when the Painter took a draft of it , but also perceived several Spots in it , which continually had shifted their places . All this must certainly be attributed to that Intestine Motion which is in the parts , even of the most solid Bodies . Tho' indeed this motion be imperceptible , and not subject to our Sight . For what other reason can be assigned why the Stones whereof Houses are built , grow harder in process of time , except we allow this motion of their parts , whereby they come closer together ? Mr. BOYLE hath also observed the vanishing of a Spot that was in an Agate , and that the Electrical and Radiant Virtue is not always the same in a Diamond , but is at sometimes much more strong and brisk , than at others ; which is a sufficient proof , that the parts of the most solid Bodies are not altogether exempt from motion . XV. Whether there be any Medicinal Virtue in Precious Stones . Very considerable Physical Virtues are attributed to some Precious Stones , whereby not only outward hurts , but many and great inward Diseases are cured . It cannot be denyed , but that many things which are commonly reported concerning the Virtues of Precious Stones , sound little better than Fables . But in case they have any such , which I would not absolutely deny , because it is a thing unanimously attested by many very Learned and Famous Men , they must proceed from some Mineral Juices that are mingled with the matter of the Precious Stones , whilst they are yet fluid . And that such Juices do mingle with them , is evident from hence , because they may sometimes be separated from them , as we see they may in Granates ; and for that they frequently encrease the specifick weight of Gems , and endue them with various Tinctures . For seeing that such penetrating Effluvia proceed from the hard Loadstone , and that Precious Stones are endued with an Electrical Virtue , it cannot be questioned , but that many thin and subtil steams do proceed from Precious Stones . Again , what a vast number of Minerals and Metals are there in the Bowels of the Earth , which may be coagulated with petrifying Juices , and unite themselves with the same before their coagulation ; and being so united , may exert greater Virtues than are to be found in Minerals that are melted in the Fire , or dissolved in Stigian Waters , and by means whereof Precious Stones may dry , adstringe , consolidate , and produce many other effects . XVI . Why Coral , which is soft under Water , grows hard as soon as it comes to the Air. Coral that grows under the Sea-water , in the manner of a Shrub , and is soft whilst it continues there , as soon as it is brought up into the Air , becomes hard , and loseth its former softness . Book . 2. Part. 5. Chap. 10 ▪ G. Freman . In. I. Kip. To Leivtenant Collonell Andrew Pitcarne alias Wheler of Datchet in the County of Bucks , one of the Captains of their Ma ties : first Regiment of foot Guards . This Plate is humbly Dedicated by Richard Blome . XVII . Coral is not soft whilst it is under water . But when I consider that Coral is of a Mineral Nature , and a kind of Precious Stone , I am more apt to believe , that it is the product of some Glutinous Juice , which being turned into Stone by the binding Virtue of Salt , wherewith it abounds , springs up like a Shrub . For Salt conduceth very much to the encrease of Plants , and is that which causeth them to spread into Sprigs and Branches . And Signior Paulo Boccone witnesseth himself to have experienced as much , who being present , when some were fishing for Coral at Messina in Sicily , he put his Hand into the net before it was drawn out of the water , and found the Coral to be hard . CHAP. X. Of the Magnet or Loadstone . I. Why a Loadstone points towards the North Pole. IF a Loadstone be hung up in the Air , or be suffered to swim on the top of Quicksilver , it will wave this way and that way , till one of its Poles look towards the North , and the other towards the South : Yet not altogether in an even Horizontal Situation , but so as that that part which points to the North , will be deprest beneath the Level of the Horizon , to the end it may the better be directed towards the Northern Pole of the Earth . The Reason of this Conversion must be fetch'd from the striate matter , whence the Magnet receives all its virtue ; the particles whereof are so twisted , that those which proceed from the South Pole , cannot enter in at the opposite Northern Pole ; and therefore rushing obliquely into the pores of the Loadstone , swimming in the Quicksilver , they do by the force they have , drive them to continue their motion according to Right Lines . And by this means it comes to pass , that the Magnet , after some motions this and that way , returns to its natural state . So that being left to its liberty , the South Pole of the Magnet tends to the North Pole of the Earth , and the North to the South ; because the striate matter , which passeth from the North Pole of the Earth , and takes its course through the Air , towards the South , comes first from the South part of Heaven , through the midst of the Earth ; as that comes from the Northern part of the Earth , which returns to the North. Furthermore the reason why the Loadstone doth not keep it self in an Horizontal Situation , but declines towards the North Pole is , because we live in the North part of the World , and consequently have the North Pole nearer our Horizon , than the South . II. Why one Loadstone approacheth to another , or withdraws from it . Wherefore if you apply the North Pole of a Loadstone ▪ you hold in your hand , to the North Pole of another swimming on Quicksilver ; or water with the help of a Cork ; this latter will withdraw from the Loadstone you hold in your hand , because the striate matter that proceeds from it , in taking its compass , doth hinder the other . But when this latter Loadstone turns its South Pole to that which is immoveable in your hand , then it will approach to it ; because the interposing Air being driven away by the striate matter , the Loadstone , by how much the less resistance it finds , is the more forcibly driven on by the Air that doth surround it . III. Arguments proving that there is a Vortex of the Magnetick Matter . Now that the Magnetick matter doth make a kind of Vortex about every Loadstone , may be evinced by several Arguments . We find that the Needle of a Compass , is put into various situations , according as it is differently posited about the Loadstone : being placed even with the Poles of the Loadstone , it lies in a straight line , and makes one Line with the Axis of the Loadstone ; but is variously inclined when it is otherwise placed . Another experiment that makes out this , is , that if you pour out the filings of Steel upon Paper , having a Loadstone fitly placed in the midst of it , we shall find in the said filings the plain draught and appearance of a Vortex . For upon the shaking of the Paper , we shall with pleasure behold the filings of Steel ranging themselves , as it were , into certain Rings , whereof those are the largest which shall return to those parts that are nearer to the Poles . And if afterwards another Magnet be laid near to the former , then those Rings of the Vortex will appear under another Figure , to the end they may pass now through the Poles of this last placed Loadstone , in case that care be taken , that the South Pole of the one of these Magnets , be turned towards the North Pole of the other . Which Experiments demonstrate to the Eye , the various Rings and turnings the magnetical matter makes about every Loadstone . IV. When a Loadstone is divided , its Poles are changed . When a Loadstone is divided in length , its Poles by this means are changed , and those parts of the Fragments or Pieces , which before this Division were join'd together , and pointed to the same Poles , do now withdraw and flee from one another . For if the Parts A and a were before join'd together , and so likewise B and b at the other end ; as soon as this division is made , a will turn to B , and b towards A ; so that the North Pole of the one doth no longer agree with the North Pole of the other ; nor the South with the South Pole. The Reason is , because the Southern striate Particles , which come forth through the Northern Part of one Section , must enter into the other through the Southern Part , and come forth through the North. Forasmuch therefore as the striate Particles , which come forth from the greater Fragment AB , are Southern , they must turn about the upper piece a b , and so fit and dispose the same , as that they may freely enter through a , and go out again through B. For A is supposed to be the South Pole , by which the Southern Particles do enter , that come forth from the other part of the Segment or Division through b , and which therefore cannot enter through b into the upper part of the Loadstone , because it is Northern , and therefore unfit to admit the Northern striate matter . V. How a Knife that hath acquired a Magnetick Virtue , by being rubbed on a Loadstone , comes to be deprived of its Virtue . A Knife that hath been rubb'd with a Loadstone , attracts Iron after the same manner as the Magnet it self doth ; but if we pass it over the Pole of the Loadstone , a quite contrary way , than we passed it at first , it will lose the virtue of drawing Iron , which by the former rubbing or passing of it over the Loadstone it had acquired . The Reason hereof is , because the Knife by being passed over the Loadstone , or rubb'd against it , was become a perfect Loadstone , for this reason only , because the magnetical matter had opened its Pores , and had smoothed those prominent little Branches of the metallick particles in the said pores that before hindred their free and ready passage through them . And so in like manner it loseth the quality of a Perfect Loadstone , by being passed in a quite contrary way over the same Pole of the Loadstone ; because the magnetical matter , exerts now a contrary effect upon the Knife to what it did before , that is , it now raiseth again the prominent extremities of the Branchy Particles in the Pores of the Knife , which it had before couched , and smoothed . Now that this is so , appears evidently from this Experiment , that if we lay some filings of Steel upon a Paper , as was before-mentioned , and draw or pass a Loadstone over them , we shall see that the parts of the said filings will range themselves one upon the top of another , and constitute , as it were , so many Hairs , which all of them lie one way ; and if then we pass the Loadstone over them the contrary way , we shall find the said Hairs to turn themselves , and to lay themselves a quite contrary way to what they were before . VI. What is the Cause of the Declination that is found in the Magnet . The Poles of the Loadstone do not always point directly to the Poles of the World , but variously decline from the same , as may be seen in Dr. GILBERTS Treatise of the Loadstone , who gives us an account of the observation of one Mr. BORROUGHS , who in the year 1580 at Limehouse near London , observed that the Declination of the Loadstone was 13 degrees and 35 minutes : And of Mr. GUNTER , who in the year 1622 found the said Declination to be only of 6 degrees , and 13 minutes : And last of all his own observation , who in the year 1634 , found it to be only of 4 degrees and 2 minutes . The decrease of these Declinations , proceeds from the Earths inequalities . For it is certain that some places abound with Iron Mines more than others , and that the Loadstone is not equally disperst in all places ; but is found much more plentiful in one than another . And therefore it is that the striate particles , which find a more free passage through the Magnetical Bodies than through any other , breaking forth from the inward part of the Earth , do flow in more abundance towards some places , than towards others : And by this means do frequently deviate from their course , and turn aside towards other Bodies , through which they pass more easily and readily . And forasmuch as the turning of the Poles of the Magnet , or of the Points of the Needle , doth only depend on the course of those Particles , it must needs point that way where there is a greater quantity of matter , that is proper to draw it . This is evident in any Loadstone that is not of a Round or Spherical Figure : For if a small Needle be applied to the different parts of it , it will not always turn it self to the Poles of it in one and the same manner , but will frequently decline a little from them . And therefore it cannot seem strange to us , if the Declination of the Loadstone be changed in one and the same place ; and that in process of time its Poles do not exactly point to the Poles of the Earth ; Because this matter may shift its place ; as for instance , in the bottom of the Sea , or in the cavities of the Earth ; or the Iron may be dug out of the Earth in some parts , or be corrupted , and degenerate into another Body . VII . Magnetical Bodies are not always turned from South to North. Hence it appears , with how little reason some Philosophers do endeavour to explain the Declination of the Magnet , by the Deviation of the Little Bear , or of the Poles of the Ecliptick , from the Pole of the World : Seeing that there be many places found , where this Declination is towards the West , as it is generally on the Eastern side of the North part of America ; on the Western Coast of Nova Zembla ; on the Eastern Shoar of Africa , and the Western of Goa . Yea , in the Azores Islands , which lie betwixt Europe to the East , and America to the West , it declines neither way : As in Trinity Isle , at the Promontory of Needles , near to the Promontory or Cape of Good Hope , at Vienna in Austria , and other places . VIII . VVhat ●s the Reason that a less Declination is found in a Loadstone that is placed upright on one of its Poles . Some tell us that a Spherical Loadstone being placed upright on one of its Poles , hath less declination , than when its Poles are at an equal distance from the Earth . The Reason of this may be , because the striate particles that are in the upper part of this our Earth , do not only turn from one Pole to the other , by Lines that are at an equal distance from its center ; but also because every where ( the Equator only excepted ) some of the said particles do ascend from its inward parts , the turning of the Magnet set upright on its Poles , depending on these latter particles , but its declination chiefly on the former . IX . Iron , being touched by a Loadstone , acquires a Magnetick Virtue . The Loadstone communicates its virtue to Iron , and doth so change it with a Touch , as to make it point towards the Poles of the World , in the same manner as it self doth . The famous GASSENDUS observes , that the Iron Cross , which had been fixt a long time on the top of the Great Church of Aix , being cast down by a Storm , did acquire a Magnetick Virtue from the Earth , so as that the parts of it did attract Iron Nails , and turn themselves towards the Poles of the World. So likewise it is observed , that when a Rod of Iron has toucht the Earth , the lower part of the Rod draws the point of the Needle of a Compass that points to the South , to it self . This happens because of the great affinity there is between the Loadstone and Iron : for they are so much alike , that the Loadstone may be called Raw and Undigested Iron ; and Iron the Riper and more Pure part of the Loadstone . For Iron is melted out of the Loadstone , as out of its proper Vein . Hence it is , that in England , Germany , Italy , and other places where Iron is found , the Loadstone is found also , as proceeding both of them from the same Matrix . But as for the manner how Iron is made partaker of the Virtue of the Magnet , and by touching it , doth acquire the same Inclination : This we shall understand if we suppose that Iron is endued with fit pores to receive the striate matter , and that it wants nothing towards the obtaining of this Magnetick Virtue ; but only that some little branchy particles sticking out in the pores of it , which do make them somewhat rough and uneven , must be bended one way for the easie passage thereof . Now upon the application of a Loadstone to Iron , the striate matter which continually takes a round from one Pole of the Earth to another , with vehement force and in great quantity , rushing like a Torrent into the Pores of the Iron , doth bend these prominent extremities of the branchy particles all one way ; and therefore effects whatsoever is necessary to the making of it fit partaker of this Magnetical Virtue . X. Why Steel is more proper and fit to admit this Magnetick Virtue than Iron . Hence it is that Steel is more proper to receive this Magnetick Force than Iron , because it hath more , and more accurately framed Pores for the reception of these striate particles . And doth also preserve the said Virtue longer , because the prominences of the extremities of these branchy particles that are in the Pores of the Earth , are less flexible , and therefore cannot so easily be bent the contrary way . XI . How Steel Scissars may be made partakers of Magnetick Virtue . The Famous Mathematician Mr. BUOT hath found by experience , that Steel Scissars or Penknives having been heated in a Forge till they be of a Red Colour , and then suddainly extinguisht in cold water , and afterwards neal'd in the fire again , till they be of a Blue or Purple Colour , and then whetted and made bright on a Whetstone , if presently after they be made to cut , or pierce through Plates of Iron or Steel , by this means a Magnetick Virtue will be communicated to them , so as to attract Iron Nails . Of which no other reason can be assigned , but this , because the Pores are so disposed in Steel prepared after this manner , that the Heavenly matter can with more ease have Egress and Regress through them : So as that no out flowing particles from the Magnet do remain , but doth only afford a free passage to the External matter . XII . Why an Armed Leadstone doth attract stronger than one that is Unarmed . The Armed Loadstone A , doth bear up more Iron B and C , than another that is not : For GALILAEUS hath observed , that a piece of Loadstone weighing 6 ounces , will scarcely bear 2 ounces unarmed ; whereas the same Loadstone armed will bear up 160 ounces ; so as that it attracts 8 times more than when it is unarmed , and a weight 25 times greater than its own weight . The cause of this encrease of the attractive Virtue is , because the Iron DE , wherewith the Magnet A is armed , is endued with Magnetical Parts , that are purged from Terrestrial Filth , and Heterogeneous Impurities ; for which reason its Pores do most fitly correspond and agree with the Pores of the Iron that hangs at it B and C , and by this means the striate particles that pass through these Pores from the one Iron into the others , do drive away all the intermediate air , and makes their surfaces to touch one another immediately ; by which means they cannot , without great difficulty , be separated ; and therefore the weight B , or C , doth stick more strongly to the Iron DE For nothing can be more proper to join 2 Bodies together , than immediate contact . XIII . A Loadstone throughly heated loseth its force to draw Iron . A Loadstone , being throughly heated , loseth its force of drawing of Iron , and doth no longer turn towards the Poles of the World. For if you heap live Coals about a Loadstone , you will see a Blue Sulphurous Flame to break forth from it ; upon the dissipation of which you will judge it to have lost its attractive Virtue . The Cause of this Loss of the Magnetical Virtue is , for that the Fire entring into the Pores of the Magnet , many of its thin and slippery parts are driven away ; upon the removal whereof , a new texture of Parts is produced in the Magnet . As we see that a Stick being put into the Fire , becomes crooked by degrees ; because the force of Heat brings some of its parts closer together , and at the same time separates others of them . The Fire therefore having thus changed and confounded the former situation of the particles of the Loadstone , the striate matter which was used to pass through them , finding the Pores much wider than they were before , doth exert but a very small force , or rather none at all upon them . XIV . A Magnet that hath been heated , may recover its lost Virtue again . Tho' there be many great Philosophers , who deny that a heated Magnet can ever recover its lost Virtue again ; yet the contrary hath been found by experience . Some indeed have observed , that a Magnet that hath been made red hot , is by this means robb'd of the gre●test part of its Virtue , and changeth its Poles in ●ase it be p●ace● to cool in an inverted situation towards the North. Or if when it is a cooling , the situation of it be frequently changed from one position to another that is opposit , it will wholly change its Poles ▪ so 〈◊〉 that that which was before the North Pole , will become the South , notwithstanding that the Loadstone be then placed perpendicularly upon the Horizon . XV. Glass drops when put to the Fire , lose their Elastick Virtue . Thus those Glass-Drops , which upon the breaking off of their Points become shattered into the smallest Dust , being by degrees pu● to the fire , do lose their Elastick virtue . The Reason is , because the Parts which before were stretched , are made wider by the admission of Heat , and by degrees sit looser from one another ; and thus the Texture of the parts being changed , they are now no longer like Sticks , with Wreaths twisted hard about them , and therefore do not so strongly resist the force of the Hammer , and become wholly deprived of their Elastick virtue . XVI . A Loadstone upon the changing of its Poles , doth lose its Virtue also . But if a Piece of Iron be applied to the Pole of a Magnet from the Right to the Left , it presently loseth the virtue it had before acquired ; because the parts of the Magnet are changed , by this contrary passage of the subtil matter through them , and the pores differently ranged and forme ▪ from what they were before . And on the contrary , it hath been frequently found by Experience , that the Iron-bars of Windows looking towards the North or South , do retain a perpetual Magnetick virtue : Because the striate Matter that proceeds from the said Poles , by process of time , do hollow pores for themselves through the said Iron-bars . XVII . How a Magnet may be some time hindred from drawing the Needle to it . A Plate of Iron , which we have said before , being joyned to the Pole of the Loadstone , doth increase its force to bear Iron , doth hinder the virtue it hath of turning Iron towards it . For the Iron-Plate DCD , doth hinder the Loadstone AB , to whose Pole it is joyned , from drawing the Needle EF towards it . The Reason is , because the striate Particles that proceed from the Loadstone , do rather pass through Iron , than any other Body ; and therefore the said particles are diverted by the Iron-Plate , from passing through the Air to EF. And certainly , besides the Iron or Magnet , no other Body can be substituted in place of the Iron-plate CD , by which the Loadstone AB is hindred from exerting its force upon the Needle EF ; as hath been said in the Institution of Philosophy . XVIII . Whether there be any thing of Truth in the story of Mahomets Tomb. There is a Common Story goes of MAHOMET's Tomb , that it is pois'd in the midst of the Air , between 2 Loadstones , without touching either the top or the bottom of the Temple at Mecha . I take this to be a meer Fable : For it is beyond the power or wit of Man , to get 2 or more Magnets that are altogether of the very same force and virtue ; and if these could be got , yet would it still be as impracticable , or rather impossible to place them so , as that the Iron placed between them , should not be drawn in one part of it more than in the other : Seeing that a very small and inconsiderable difference in the Loadstone , Iron , or in the place it self , would be sufficient to overthrow that Equality . Neither are we to ascribe any greater Authority to the Stories that some Authors tell us of the Horse of Bellerophon , and of the Statue that was in the Temple of Serapis . These being nothing else but pure invented Stories , which have gained Authority by the Credulity of the Vulgar . The Sixth Part OF THE HISTORY OF NATURE . OF METEORS . CHAP. I. Of Vapours and Exhalations . I. Why Vapours are more copious in Winter , than in Summer , MORE Vapours do seem to arise from the Earth in the Winter , than in the Summer , when the Sun with more direct Beams beats against the Earth , and more strongly agitates the fluid particles of Pools and Rivers . Hence it is that we have then greater store of Rain , and that the Air is more darkned with Mists and Clouds . This is the sentiment of the Common People , who judge of the OEconomy of Nature , only by the outward Senses , and without examining , embrace whatsoever they offer first . But Reason will perswade us to be of another opinion : For the Sun , who , by his presence , raiseth Vapours and Exhalations into the Air , doth in Summer display his heat more upon Pools , and moist and boggy places , than in Winter ; when his Beams do only obliquely or slantingly strike against the Earth ; and consequently at that time produce a weaker agitation in the waters . Moreover , we find that the waters in Summer do signally decrease . Wherefore the true reason why Vapours are in greater abundance in Winter is , because the Air being then Cold by reason of the Suns absence , the Vapours cannot mount up to any considerable height in the Air , but are presently condensed , and so becoming heavy , fall down again to the Earth . II. Why more Exhalations do arise from one part of the Earth , than from another . It is observed that Exhalations proceed more copiously from some parts of the Earth than from others ; not only from those which are covered with thick and close Woods , but even in those which are equally enlightned by the Sun. III. Vapours and Exhalations stop in the Air at a certain distance from the Earth . The Reason of this may be , some subterraneous Fires , which by putting the moisture that is shut up in the Earth into motion , do , through various passages , transmit and disperse it . For it is not to be questioned , but that there are Fires hidden in many parts of the Earth ; which meeting with matter fit to be turn'd into Steams or Exhalations , do drive the same upwards . As we find that Gardens that are kept in good order , and Ploughed Ground do send forth more effluvia than other places , especially if they be much exposed to the heat of the Sun. Vapours and Exhalations do not mount up to any considerable height in the Air , but there stop at different distances from the Earth . The Lower Region of the Air is hotter than the Middle , and the Middle hotter than the Highest , not only because they are nearer the subterraneous Fires , and those firmentations which are excited in the more outward parts of the Earth ; but also by reason of the Reflexion of the Suns Beams , which is the chief cause why the heat of this Star is greater in those Regions . Now this supposed , it is evident that the Vapours , being lighter , may ascend to the highest Region of the Air , whilst the Exhalations can scarcely get up to the middle , where most of the Meteors are forged and produced ; and this by reason of the great variety of degrees of Cold and Heat , which by turns do there bear sway . IV. Why Water , when turned into a Vapour , doth take up more place than it did before . Water , when it is turned into Vapour , takes up much more room than before ; forasmuch as the parts whereof the Vapour consists , because of their swift agitation , do spread themselves every way , and are swiftly whirl'd about , and thereby extend more in length ; so that by this means every one of them are of force enough to drive away any neighbouring parts that would make an irruption into the Rings , which by their circulation they describe . Much in the same manner , as when the Stick LM , through which the piece of Cord NP , is put , being violently turn'd round , the Cord , by this means , is extended at its full length , and fills up the whole space of the Circle NOPQ , so that no other Body can enter the said space , but that the Cord , in this its motion , would drive it away . V. Rarefied Air doth not turn to Fire , as Aristotle ●eld . This shews ARISTOTLES mistake , who was of opinion , that the Air may be so dilated , as to change its nature , and to take upon it the form of Fire : For it is found by experience , that if the Bladder of a Pike be prickt with a Pin , and all the Air let out , and then it be so closely tied up again , that no Air can enter into it ; if afterwards the said Bladder be put into a Glass Pipe , having a broad Bottom , and a wide Mouth , being tied close about with a Hogs Bladder , and Quicksilver put into it , it will display it self , and swell into the same dimensions , as it was when first it came out of the Fish , tho' the Air in the Bladder be above an 100 fold rarefied above what it was before , by the agitation of the subtil matter contained in it . VI. Why the steam of a Mans Breath is condensed into water against Glass Windows . The Steam proceeding out of a Mans Mouth , in cold weather , is condensed on the Panes of a Glass Window , into drops of Water or Ice . The Reason is , because the Vapours by the heat of the Stomach , are carried to the Windows , and being not able , because of their thickness , to pass through them , become there condensed into Water ; and if the Weather be very cold and frosty , they turn to Ice , and represent several figures on the Glass . VII . Why some Bodies send forth healthful , and others hurtful Exhalations . The Steams that proceed from Bodies , are distinguish'd by their smell ; for some are good and healthful , others evil and hurtful . In places where abundance of Roses grow , the whole neighbouring Air is filled with a sweet Rosie Odour : Whereas on the contrary , in places where Dug or Carrion is cast forth , the Air is annoyed with abominable and noxious Vapours , and stinking Smells . The Reason is , because these Effluvia which wander through the Air , are nothing else but lively and active particles of Earthly Bodies ; which being agitated by the heat of the Sun , are carried upwards , in the very same manner as we see that a wet Cloath , hung before the Fire , doth send forth vapourous Steams . Wherefore all manner of Exhalations , are either healthy or hurtful , according as the Bodies from whence they proceed , are either sound , or tending to putrefaction . Thus we find that the Vapours which arise out of the Earth are dry , because they consist of dry terrestrial particles : Whereas those that are sublimed from the Sea , are moist and cold ; because they consist of fluid and slippery Aqueous particles , which running together , constitute a liquid and cold Body . VIII . Why so many die in London of the Consumption . Accordingly we find that observation to be very true which Sir KENELM DIGBY makes of London , in his Treatise of the Sympathetical Powder , viz. that in the Winter especially , the Air is filled with Soot and volatil Salt , from the Smiths Coals that are generally there burnt , which flying in the Air , enter the closest shut Rooms , Trunks and Chests ; sullies and spoils the Furniture of Beds and Hangings . And it is not without reason , that Physitians attribute to this cause , that so many are troubled with , and die of Consumptions of the Lungs ; because the Air abounding with such particles , is very apt to inflame and exulcerate the Lungs . IX . Why some steams are noxious to the Body . From what hath been said , we may easily see the reason why Steams are the cause of the infection of the Air , and of the corruption of the Bodies of Animals . For as the particles of Rennet being disperst through the substance of Milk , do change the situation of its parts , and make that which before was liquid , a fixed and hard Body : So likewise the particles of pestilential Steams , penetrating the pores of the Air , do pervert and overthrow the Texture of its parts , and cause malignant Distempers . X. Exhalations are the cause of innumerable distempers . And accordingly it is most certain , that innumerable Diseases are caused from poisonous Steams . And forasmuch as these Fumes do commonly proceed from Mineral Juices , therefore the destruction that is caused by them is so much the greater , as abounding with sharp and corrosive particles , which are the fruitful seeds of many malignant Distempers , and are very noxious to the vital Spirits . Thus we find that in several places such poisonous Exhalations break forth out of the ground ; as at Puteoli , where there is a Pool or Lake which sends forth sulphureous Steams that are pernicious to the very Birds that flie over it . In like manner there are many places in Campania , where abundance of sulphureous and bituminous Exhalations proceed from some subterranean Cavities , some whereof are healthful , and others hurtful . XI . The Evening Air is found to be hurtful to many . To these Exhalations and Steams , now mentioned , may be added that subtil Steam or Breez , which being sublimed from the Earth in the day time , and falling down again after Sun set , is call'd the cool evening Air , and found to be hurtful to many , especially to those who are of a less compact frame of Body , and whose pores are more open . This Steam is also wont to be more hurtful about the time of the Aequinoxes , especially in places that abound with Mineral Exhalations . For a moderate heat raiseth a vast number of Vapours , especially in moist and morish places ; which steams , because they abound with sharp and corrosive particles , enter through the pores into the Head , and cause Tooth-ach , and many defluxions ; as also by their sharpness , opening the Capillary Veins , they occasion great bleeding and watchings , and are in a particular manner noxious to the instruments of Respiration . XII . Exhalations are not so easily carried upwards as Vapours . Vapours are more easily carried upwards than Exhalations , as may be seen in the distillation of common Salt , Nitre and Vitriol , whose Exhalations do not rise without a great force of Fire . The Reason is , because the water which furnisheth the matter of Vapours , consists of long smooth and slippery parts , figured somewhat like Eels ; which tho' they be entangled together , yet are never so closely joined , but that they may be easily separated from one another . Whereas the Earth , whence Exhalations do arise , consists of more irregular parts , which , like Sprigs , grow close together in Hedges , are easily twisted together , and cannot without difficulty be separated again . Wherefore Vapours that consist of the thin and slippery parts of the water do more readily mount up than Exhalations ; which because of the closer texture of their parts are kept down , and cannot ascend , except they be born up by other Bodies . XIII . Why our Breath feels more hot when breathed with an open Mouth , than when our Mouth is drawn together . A hotter Steam or Breath proceeds from an open Mouth , than from one half shut . The Reason is , because heat consists in the agitation of the little particles of the terrestrial Bodies ; wherefore when we blow strongly against our Fingers , close joined together , we find that our Breath feels cold in the outward surface of our Hand ; because being carried there most swiftly , and with equal force , doth not produce any considerable agitation ; whereas on the contrary we perceive it to be considerably hot betwixt our Fingers , because being more slowly and unevenly moved betwixt them , it puts their small parts into a greater motion . And it is for the same reason that we feel that breath hot , which is breathed from our open Mouths , whereas that which is blown from them when almost shut , seems cold to us . As we find that commonly violent Winds are cold , and the gentle are commonly the hottest . XIV Why we can see our Breath in the Winter , and not in the Summer . The Breath of Animals is visible in Winter , as also the Steams that proceed from them in sweating ; but not in the Summer . The Reason is , because the particles of the Vapours , which in Summer are carried through the Air , do more comply with the motions of the subtil matter , and give way to all its impulses . But in the Winter , when the subtil matter is more weakly agitated , the breath is condensed by the coldness of the Air , and is frequently turned into water ; and in extream cold and frosty weather doth turn to Isicles on the Hair of Mens Heads and Beards . Whereas in the Summer they are not perceived at all , because of the heat of the Air , which disperseth them far and near . XV. Steams proceed from all Bodies . Wherefore it cannot be questioned , but that the most solid Bodies do send forth some Steams or Effluvia from them , which compose a kind of Atmosphere about them . As is evident , not only in Amber , Camphire , Spanish-wax , and the like , which diffuse their Odour through the Ambient Air ; but also in Wooden Vessels , which being exactly weighed , will be found to have lost something of their weight : And in Eggs , whose substance evaporates , even in the coldest season ; yea and in Ice it self , which being exposed to the Air in the Night , doth decrease in heaviness , and is considerably diminish'd as to its substance . And if in some Bodies , such an efflux of particles be not perceived , the reason hereof probably may be , because we have no Scales exact to discover the same , seeing that the Scales and Weights themselves are subject to this decrease by a continual efflux of particles , and are not always the same weight . XVI . But most of all from Human Bodies . But these Effluvia are no where more sensibly perceived , than in the insensible Transpiration of Human Bodies . For SANCTORIUS affirms , that he by an exact weighing of himself , found that more than one half of our Food and Drink , passeth by insensible Transpiration ; and that we evacuate more of our Aliments through the pores of our Skin , in one day , than we do by Siege in 15 days ; which is an incontestable proof of the Steams that continually proceed from our Bodies . CHAP. II. Of Winds . I. Why Winds are more frequent in the Spring and Autumn , than at other Seasons of the Year . WINDS are more frequent in the Spring and Autumn , and do blow with greater violence , than in Summer or Winter . The Reason why it thus happens in the Spring is , partly because of the melting of Snow , especially in Mountainous Places ; and partly because the pores of the Earth are then opened , and send forth more Steams or Vapours ; and partly also because the Air and Vapours are then more rarefied than in Winter . And in Autumn , the reason is to be ascribed to the frequency of Rains that then fall , as well as to the greater quantity of Exhalations ; because the Suns moderate heat , which then takes place , doth raise Vapours and Exhalations , but gross ones , and not sufficiently rarefied . Whereas in the heat of Summer , there are for the most part no winds , for the same reason that Rains are very scarce then ; and because the Sun doth too much extenuate the Exhalations , and so prevents them from uniting in that quantity , which is requisit for the Generation of Winds . And in the midst of Winter , winds are less frequent , not only because less quantity of Vapours is at that time raised from the Earth , but also because those which are so raised , are either condensed into Snow , or at least by reason of the cold , are not so rarefied and dispersed as to be able to produce a Wind. II. Why an East Wind commonly blows in the Morning , and a West wind in the Evening . About the Suns Rising , an East wind is commonly perceived , and about Sun Set a Western : which difference they are most sensible of , who sail in the Ocean , at a great distance from Land. Book . 2. Part. 6. Chap. ● ▪ G. Freman I● ▪ III. Whence the difference of Winds doth proceed . Whence it follows , that the Fermentations that appen between the Tropicks , produce Winds that are either contrary to , or agree with the East-wind , according as that part of the Earth , where they are generated , is differently situated with regard to the Sun : Whence it comes to pass , that the East-wind , which reigns constantly betwixt the Tropicks , is sometimes stronger , and at other times weaker , as Experience sheweth . I have said before , that this diversity of Winds is most of all perceptible to them that Sail in the vast Ocean ; because at Land there be many things that hinder us , that we cannot so well observe this order of the Winds , viz. the height of Mountains , and the great variety of Climats . IV. Why East-winds are dryer , than VVest-winds . East-winds for the most part are dryer ; and produce fair and clear weather ; whereas those from the West are commonly moist , and bring Vapours . The Reason hereof must be deduced from the motion of the Air , which is carried about the Earth from East to West : For seeing that the Winds that are generated at C , follow the motion of the Air , they consequently drive before them all the Vapours they meet with , and dissipate them , and so hinder them from being condensed and turned into Rain . But those which are produc'd in the West A , seeing that they strive against the motion of the Air , and take a different course from it , they stop the motion of the Vapours they meet with , and drive them together into Clouds . And for the same Reason , winds that proceed from the East C , are generally stronger , and blow with greater force , than those that blow from the West A ; because those which are forged at C , follow the course of the whole Mass of Air. Or else , because by reason of the longer absence of the Sun , the Vapours are more closely condensed in that part of the Earth which is between C and D , than in that which is betwixt D and A. Now it is certain , that the Condensation of Vapours , contributes to the force and violence of winds ; which are by so much the more vehement , the more heavy the parts are whereof they consist . V. VVhy about the Sea-Coasts , the VVind at Night blows from the Land , and in the Day-time from the Sea. On the Sea-Coast , the winds are found to blow from the Sea in the Day-time , and from the Land in the Night . This shifting of the Wind depends on the Illumination of the Sun , whereby it differently raiseth up Vapours from the Sea and Earth . For whilst the Sun shines , he commonly raiseth more Vapours from the Sea , than the Earth ; because the Earth is dry in many places , and doth not afford such plentiful matter for Vapours , as the Water : And , on the contrary , when the Sun withdraws , more Vapours rise from the Earth , than from the Sea ; because the Earth being a compact Body , and abounding with moisture , doth longer retain the Heat imprest upon it , than the Sea. And therefore those strong winds , which blow from Midland places upon the Sea , are strongest next to the Shoar ; but grow weaker , the further they proceed on the Sea. From whence COLUMBUS , the first Discoverer of the West-Indies , gather'd , that there were other Countries beyond the Atlantick Ocean , and those not far off neither ; because he found such strong and violent winds to blow from the Sea towards Europe , which he concluded to be too vehement to proceed from the Sea. VI. VVhat the Cause is of the winds called Etesiae , and of other Constant winds . There be some Winds that return at certain times , and always observe the same course ; as the Etesiae , which every Year blow for 40 Days together , beginning 2 days after the Rising of the Dog-Star . West-winds , which blow from the Vernal Aequinox , to the Autumnal , in the Mediterranean Sea : And South-winds , which are produc'd under the Torrid Zone , and have their daily , monthly , and 6 monthly Returns , or Reciprocations . The Sun is the only Cause of all these constant or stationary winds , who , according to his various approaches to , or recesses from the several Parts of the World , effects this great diversity herein . For as to the Etesiae , which are observed after the Summer Solstice , it is probable that they proceed from Vapours , sublimed by the virtue of the Sun from the Earth and Water , that are in the Northern parts , after that he hath continued a great while about the Tropick of Cancer . For it is certain , that he continues longer at the Tropicks , than in the Space that is between them . And we are to consider , that in the Months of March , April and May , the greatest part of the Clouds and Snow which were about our Pole , are resolved into vapours and winds ; and that these winds , from the beginning of the Spring ( at which time they are at the strongest ) towards the Summer Solstice do grow weaker , as the Matter of them decreaseth . And that in June , the Earth and VVater is not yet sufficiently heated there , to furnish Matter for a new wind : But when the Sun continues about the Tropick of Cancer , they become more strongly heated , and by this means produce the Ethesiae , when the Noon of that long Day , which continues there 6 Months , begins a little to decline . VII . The winds called Ornithiae , are near akin to those Etesiae . These Et●siae have a great affinity with the winds called Ornithiae , which blow from South to North , and bring back the Birds from the beyond Sea hotter Countries into Europe , and are therefore called Ornithiae , or Bird-blowing-winds . But yet sometimes these winds stop in the midst of their course ; and therefore it is observed , that Swallows are very rare in France , when North winds have blown much towards Africa at the beginning of the Spring . VIII . In the Indian Seas , and those of Arabia , the Winds blow constantly . Experience teacheth us , that in the Indian and Arabian Seas , which are so situated with respect to the Continent of Asia , when the Sun heats the same from April to October , the Air which is condensed on the South-side of the Aequator , doth transport it self with so much impetuosity , towards the North-side of it , that it makes the North-east-wind not to be perceived , which blows at the same Latitude in the Atlantick Ocean . And , on the other hand , when the Sun doth heat the Seas which are on the South-side , from October to April , then the Air which becomes condensed towards the North by the Cold of the VVinter , that remains there , doth take its course with that violence towards the South , that it doth entirely over-power the South-east-wind . Which is the Reason , why in these Seas there is only perceived a Periodical-wind , which blows one half of the Year on one side of the Aequator , and the other on the other side . IX . The West-winds blow at a certain time of the year in the Mediterranean . In like manner West-winds usually blow in the Mediterranean-Sea , from the time of the Vernal Aequinox to the Autumnal ; because a great quantity of Vapours is , during the Heat of Summer , drawn up from the Atlantick-Ocean ; and some Hours after Sun-Rising , which answer to a set space of Time after Midnight , are driven to wards the East , and continue their activity till Sun-setting . The winds betwixt the Tropicks are certain and stationary ; because the Sun there darting direct and perpendicular Rays towards the Earth , doth by this means raise many Vapours , which being put into motion by the Action of the Light , do diffuse themselves and prod●ce a wind . And in like manner it may be said of other winds , which rise at certain times ; as of the Southwest-wind by West , which blows from the Eastern-shoar of Africa , towards Morambique , from the beginning of August to the 15 th of September ; that they are caused by the Sun , who raiseth plenty of Vapours out of the Indian-Sea , from April to August , which take their course towards Africa , and having got more room , do there dilate themselves . X. How Artificial-winds may be made . Winds may be raised by Art , as appears by that Instrument called the Chymists Bellows ; which consists of a hollow Copper-Globe , so contrived as that it may be filled with water , and afterwards shut up close ; having a Pipe with a very narrow Mouth jetting out from one part of it , which Instrument thus fill'd with water , is plac'd near a Fire , the Pipe being turn'd towards that Fire which is to be blown up : Whereupon , as soon as this Globe grows hot , the water becomes rarefied , and bursts forth through the narrow Mouth of the Pipe , in the manner of a strong blast or wind , and so serves for a Bellows till all the water be consumed . In this case the particles of the water being agitated by the fire , dash together , and with strong Endeavours strive to get away from one another ; and because they cannot dilate themselves , nor depart from each other , but only so far as some of them get out through the Pipe , all this force wherewith so many of them clash together , being united , doth drive the parts that are next to the Pipe , with great violence into the open Air , and by this means a blast or wind is caused . And forasmuch as by the fires continual Action , other parts of the water are still rarefied , and being whirl'd about , do withdraw from one another , whilst others of them endeavour to get out of the Pipe ; by this means the wind ceaseth not , until all the water that is in the Globe be evaporated , or that the fire be removed from it . XI . Why winds are most vehement in the Winter . Winds do rage most in the Winter , and cause more stormy weather , than at other times ; which Sea-men are very well aware of . The Reason is , because the Sun at that time draws towards the Southern Tropick , and therefor● occasions a less Resistance against the North-winds . To which may be added , That in the VVinter , the South-west , or South west and by VVest-wind comes down with more force from the Mountain Atlas , or the Southeast-wind from the Mountains of Syria and Arabia . But the VVinds are never more stormy than in March and September , because the Heaven then is subject to many mutations , and frequent vicissitudes of heat and cold , moisture and drought . XII . Why the South-wind is unhealthful . The South-wind is , for the most part , unhealthful , and causeth Colds or Stuffings of the Head. Hence it is , that when the South-wind blows , People grow more peevish , and more unfit for their Studies . The Reason is , because the South-wind being moist , carries many Vapours along with it , which enter into the open pores of the Body , and are carried to the Inward parts of it . Whence proceed Colds and Stuffings of the Head , and Dulness of the Senses , which when a man perceives , he is apt to be troubled and peevish ; and consequently is less disposed for his Studies , or other Affairs , that require a clear and serene Mind . XIII . Why the North-wind commonly brings fair weather , and the South-wind , Rain . Northern-winds do clear the Air , and cause Fair-weather . Because by their impetuous blasts they drive away and disperse the Clouds that are already formed , and by their Coldness hinder the Generation of New ones : Whereas on the contrary , South winds must needs produce a quite different Temperature in the Air , which is abundantly confirm'd by Experience in the Isle of France , Burgundy and Campagne , whither the South-wind always brings great Rains ; for being opposed to the course of those Vapours , that are raised towards the North , and which blow towards the South , it stops them , and by its heat , doth in a short time change them into showers . XIV . Some winds blow only in some particular Regions . There are some winds that blow in some particular Countries only ; as that North-wind which blows on the West-side of the Alps. Such also is the North-east-wind in Apulia , and in other places . The Reason of these VVinds must be deduced from the situation of the several Places , the Narrowness of the Valleys , and the Caverns of the Mountains . For it is evident , that a wind must blow with greater violence between the Streights of Mountains , by the same Reason that the water of a River runs more swiftly where its Channel is streightest , because the Fore-parts of the water are prest forwards by those that are behind . And therefore it is , that a VVind that breaks from a streight place into an open Country , doth rage with an extraordinary violence . Book . 2 Part. 6. Chap. 3. G. Freman . In. I ▪ Kip S●● XV. Why the North-wind is cold , and the South , hot . The North-wind is generally Cold , because it passeth through a Region cover'd with Snow , whence it brings many cold Vapours along with it . But the South-wind is Hot , because it comes to us from those parts that are nearer to the Torrid Zone , whence it brings along many hot Exhalations , which the Sun hath call'd forth , which makes it to feel hot to us . This Mr. BOYLE made an Experiment of in a Weather-Glass , in which there was a hanging Cylinder , or long Glass-Pipe fill'd with Water , and after having blown into it with a pair of Bellows , the water did not fall down , as it happens when the Cold is increased ; but on the contrary , the Glass-Pipe began to grow hot , and received some degree of warmth upon blowing in of the wind : But when the outside of the Bellows was surrounded with a mixture of Snow and Salt , a colder wind came forth from it , and made the hanging water to descend . By which Experiment it sufficiently appears , that all winds bring some Steams and Exhalations along with them , that impart a different Temperature to the Air , which they fan with their Blasts . XVI . The Winds that blow in Temperate Zones are Irregular . The winds that bear sway in these Temperate Zones , are generally irregular ; that is , are tied to no certain Rules or Laws . The Cause of this Inconstancy is to be fetched from the different situation of the Zones ; for seeing that the Temperate Zones are placed betwixt the Torrid and the Polar frigid Zone , they sometimes receive the most intense heat from the former ; and at other times , most extream cold from the latter . Whereas the Cold and Hot Zones , for the contrary Reason , are accustomed to more Regular winds , which at certain set-times use to be very violent . Thus because Southern-winds with us , do most of all depend on the different force of Exhalations , therefore also they are free , and tied up to no Laws . XVII . Winds blow regularly only , on the Main Sea. But after all , it may be said , that winds are scarcely Regular to exactness , save only on the Main-Sea , where the Fermentations that commonly happen in the Earth , cannot produce any Alteration ; and that on the contrary , on the Land and in Seas , that are not very far from it , the winds must needs appear with all the Irregularities imaginable ; not only with respect to the different parts of the Horizon , whence they blow , but also with respect to the force wherewith they exert their activity . XVIII . The most violent Winds are dry , and the most gentle are the moistest . The most violent winds are such as are dry ; and the most gentle and soft , are those that are moistest . The Reason is , because the most violent winds are able to carry away with them the watry particles that are in the pores of Bodies , that are exposed to their action ; whereas on the contrary , the softest and gentlest winds must needs be the moistest ; not only because the particles of Air , and the Vapours whereof they are composed , are not of force enough to carry away the particles of the water , which are either in the pores , or on the surface of Bodies which they meet with ; but also because the Vapours which are in the wind , being only endued with a small degree of Agitation , do stop at those Bodies , and make them moist . XIX . Why the Wind h●th so great force against the Sails of a Ship. A wind blowing against a Plate of Iron , or a wooden Board , exerts but little force upon it ; whereas when it is driven against the Sails of a Ship , it hath so great a force as to drive forwards the greatest Ships so swiftly , as that they can run near 80 Leagues in 24 Hours . The Reason of this difference is to be ascribed to the difference of the pores in these several Bodies ; for those that are in Sails are formed by the weaving of Threds , through which , when the wind passeth , it doth as it were divide it self at the several Threds of the Sail , that separate the pores from each other , and exerts its force against them : Like a Torrent of water , which exerts a greater violence against a Dam , that hath slits or intervals between them , than against a wooden Board , or a stone Wall , which affords no passage to any part of the water . XX. VVhy the VVind is felt colder than the Air , whereas indeed it is not colder than it . Winds seem to be colder , than the still and calm Air , tho' they be little or nothing colder than it , as may be seen in a Weather-Glass , in which the water doth not mount higher when the wind blows , which yet ought to be , in case the Air that is shut up in the Glass , were made colder by the outward wind . The Reason is , because the still Air doth only reach the outside of our Skin , which being colder than the Flesh which is hid under it , is therefore less sensible of the Cold that comes against it : Whereas the wind being more agitated , is driven deeper into our Bodies , and piercing the Flesh , is conveyed into the Inward parts , which being much hotter than the Skin , are more sensible of the coldness of the wind that reacheth them . For the same Reason that a hot Hand is made sensible of more cold when it touches a piece of Ice , than a Hand which is only luke-warm . CHAP. III. Of Clouds and Mists . I. How Clouds come to be poised in the Air. CLouds are suspended and poised in the Air , tho' they seem to be thick and heavy . The Reason is , because the particles of Ice , or Snow , whereof they consist , are very small , and of much Surface , according to their bulk ; and therefore are more hindred by the resistance of the Air from falling downwards , than they are driven down by their own weight ; much like as a heavy loaden Ship is born up by the resistance of the water that surrounds it . Besides , the winds that commonly blow near the Earth , consisting of a more thick and gross Matter , than those which are in the higher parts of the Air , are not only of force enough to stay and poise the Clouds in the Air ; but also to raise them above that part of the Air wherein they are . Again , tho' the particles of Ice , being driven by the wind , do become contiguous to one another ; yet are they not therefore closely joyned together , but on the contrary do constitute a Body which is so loose , light , and diffused , that except heat do melt some of the parts of them , and by this means do condense and make them more heavy , they would never be able to fall to the ground . II. VVhy there be more Mists in the Spring , than at other times . Mists are very frequent in the Spring , more than at other Seasons of the Year . The Reason is , because at that time there is a greater Inequality between the heat of the Day and the cold of the Night ; by which means it happens that a great quantity of Vapours do meet with the Coldness of the Air. For there are two things required to the turning of Vapours into Water or Ice : The first is , that their particles come so close together , that they may touch one another : The 2 d is , that there be Cold enough to stop and unite them , when they are come thus close together . For the Cold would be of no use , if the particles of the Vapours were at a distance from one another , and separated . And their Connexion would be of as little use , in case the agitation of Heat were so great to hinder their union . And therefore when in the Spring , Vapours are carried upwards by the heat of the Day , which by the cold of the following Night are again condensed , it cannot be otherwise , but that Mists must more frequently appear at that time , and the Earth be more abundantly moistned with them . And for the same Reason it is , that on the Sea-Coast , and in Marshy places , Mists are more frequently generated than in Upland places , and such as are remote from the Sea ; for the Water in those places sooner losing its heat , than the Earth , imparts a coldness to the Air , where afterwards the Vapours , that proceed in great abundance from the hot and moist Earth , are condensed . III. VVhat is the Cause why one Cloud seems to lie upon another . Sometimes a double range of Clouds appear in the Air , whereof the one is carried below the other . The Reason is , because the Vapours , of which the Clouds are generated , do not with an equal force mount up into the Air , but some get up higher than others , before that they are sufficiently condensed for the forming of them . Whence it is , that we see some of them further from the Earth , and others nearer to it , and these too sometimes driven by different winds . Which is more especially perceived in Mountainous places , whe●e the sublimed Vapours are more unequally driv●n by the heat , than in other places . Hence it is , that according to the greater , lesser , or equal weight of the Cloud , the same Cloud doth either ascend , descend , or hang equally poised in the Air : As a Ship , according to her greater , less , or equal weight , doth rise higher , sink lower , or keep in an equal station in the water . IV. The highest Clouds consist of Icy particles . The highest Clouds are composed of particles of Ice , which may be gather'd from the Tops of the highest Mountains , which even in the midst of Summer are cover'd with Snow . The Reason is , the great Coldness of that Region of the Air , which without doubt is colder , than that which lies upon the tops of the Mountains , or at least as cold ; and because the Vapours , the higher they ascend , the more cold they meet with to condense them , and are the less liable to b● pressed by the winds ; therefore , for the most part , do the highest parts of the Clouds only consist of the thinnest Capillaments of Ice , situate at a great distance from one another . V. VVhat is the Cause of the various Colours of Clouds . Clouds appear of different Colours , sometimes black , at other times white , and sometimes are painted with all the Colours of the Rain-bow . A Cloud appears black , when little or no Light is reflected from it , and then it is a sign of Rain ; because the lower part of the Cloud is either already turned into water , or will be so suddenly . So on the other hand , when the Light is reflected from the Cloud , only by changing the Order of the Rays lighting upon the Cloud , without any other change of the Beams , then the Cloud appears white , and is a fore-runner of Fair-weather ; because the said Cloud , consisting of distinct Globuli , or round particles , doth more readily vanish into the Air. And so lastly , when the Light is reflected from a Cloud in the same manner , as it is sent back from the Matter of a Rainbow ; then that Cloud appears of many Colours , like a Rainbow , viz. Red , Green , and Purple , and may be a sign of Changeable-weather . VI. VVhy Mists commonly arise about the Morning . Mists commonly are generated in the Morning , when a clear Night hath gone before , and when the weather is calm and free from the least Blast of wind . And if any one of these be wanting , either no Mists at all do arise , or if they do , they presently vanish . The Reason is , because a Mist chiefly riseth from a Vapour , which breaks forth from the surface of the Earth , being raised by a gentle heat , from Boggy places and Rivers , especially if they run slowly . Wherefore if the Heat be over-great , it doth too much dilate the Vapours , and makes them fly upwards and vanish away . The extream sharpness of the Winter coldness , and great and violent winds , are also a hindrance to the production of Mists , because then the Vapour cannot be kept in by the ambient Cold , and the Thickness is lost , which is necessary to the constitution of a Mist . Moreover , a Rainy or Cloudy Night , hinders it , because the Rain extinguisheth that warmth which is necessary for the raising of Exhalations . Lastly , When a Cloudy Night hath gone before , no Mist will ascend ; for seeing that no Dew falls at that time , there is no matter for the raising of Vapours ; and therefore it is necessary in order to the forming of a Mist above the ground , that the weather be still and calm , that the Earth be warm , and that a fair Night hath gone before . VII . VVhy a Mist is dark and dusky . A Mist is dark and dusky , and deprives us of the Light of the Sun. The Reason is , because a Body that consists of many particles so ranged , that the Light , by reason of the said parts lying one upon the top of another , is the less transmitted , the deeper it drives amongst these little Bodies ; such a Body as this is , I say , tho' at first it be transparent , yet will at last , by this its swallowing up of the Light , become dark and dusky . For after this manner it is , that beaten Glass , foaming Waves , and a thick or close Wood become Dark or Dusky . And the same is the case with a Mist : For water attenuated into its least particles , which is a Vapour , and the Matter of a Mist , tho' with these its divided particles it be so tost up and down in the Air , that it scarcely hinders the strait course of the Light ; yet when the said particles come together again , it constitutes some Drops , which tho' every one of them singly taken be transparent , do so receive the Light , that not so much as one of the beams is transmitted or passeth through the whole heap of them . VIII . When a Mist is a sign of Rain . When a Mist having its parts united is carried downwards it threatens Rain ; but if it be rarefied by degrees , and so ascend , it is a sign of fair Weather . The Reason is , because when a Mist in an united Body is carried upwards into the Air , it joyns to its self many particles of Dew , which are scattered up and down the cold morning Air , which being soon after put into a motion by the least heat , are dissolved into Rain . Whence we observe that a Mist is often suddainly raised , whereas the Sky before was very clear , and promised nothing less than Rain . For the heat agitating more forceably the little drops whereof the Mist doth consist , makes many of them to run together , into such great drops , that the Air being no longer able to bear them up , they are forced to fall down in Rain . IX . Great Mists and Clouds are generated by the meeting of two Winds . When 2 or more Winds meet one another in their course , then Mists are formed in the place of their meeting . The Reason is , because these Winds drive many vapors together to that place , which being united do either form Mists , if the Air thereabouts be very cold ; or else produce Clouds , if the neighbouring Air be not cold enough to condense them , and so the matter of these Vapors mounting up higher into the Air , is there by the coldness of the place coagulated into Clouds . Yea , sometimes such a vast quantity of Vapors is gathered together in those places where 2 or more Winds meet , that the Winds cannot pass for them , neither above , nor under them , and so are forced to move round them , by which means they form a great Cloud of the said Misty matter , which being pressed on all sides by the Winds , gets a round and smooth surface . X. A Mist magnifies and lessens Objects . If a man be look'd upon through a Mist , he appears like a Giant : Whereas the Sun being beheld through it , appears much less . The Reason is , because many Rays are refracted in those drops , whereof the Mist doth consist , which being gathered within the Eye , do dilate and extend the Object . But the Sun appears less , because the Beams proceeding from him , by reason of their great distance are dissipated , and do not all of them light upon the Eye ; so that some of the lateral Rays are lost , which are wont chiefly to magnifie Objects . CHAP. IV. Of Rain . I. Why the Drops of Rain are round . DRops of Rain as they fall down do settle themselves into a Round or Globular figure . Some suppose this to proceed from an innate instinct in things , whereby they endeavour to preserve themselves from destruction ; and that therefore the drops of water reduce themselves into a round figure , the better to preserve themselves from the injury of the Air , or the action of any other Body coming in their way . But this is to attribute Understanding and Will unto insensible things . Say we rather that the drops of water become smooth and round , by means of the Heavenly Globuli which surround them , and thrust themselves within the Pores of them . And because the Heavenly Globuli have another motion amongst the parts of the water , than in the ambient Air , and endeavour to move in right lines , thus it comes to pass , that those of them which wander in the Air , are less hindered in their motion , when the drops of the water they meet with are Globular , than if they were of any other figure . Wherefore if any part of them chance to be prominent and not comporting with a Globular figure , the Heavenly Globuli in their Career through the Air , do with greater force dash against these prominences , than against the other parts ; and so drive them towards the Center . But if the said part chance by this force to be driven too near the Center , then the Heavenly Globuli that are within the drop , do with greater force , drive it from the Center , and by this means it is that all drops of water are formed into an exact Spherical figure . II. Why Drops lose their roundness when they run together . Hence it is , that when drops touch one another they lose their roundness , and run together ; for in the point where drops touch , the Aethereal water presseth them more weakly than in others , and doth not drive all the parts of them equally towards the Center , as it did before . III. Why it Rains some times in the Summer when no Clouds appear . It happens sometimes in the Summer , and in still and calm Weather , accompanied with great and sultry Heat , that Rain falls , before any Cloud can be seen . The Reason is , because the Vapors , which are then in great quantity in the Air , being prest upon by the Winds of other places , as appears by the calmness of the Weather , and the sultriness of the Heat , are turned into drops of Rain , which fall down as fast as they are formed in the Air. IV. Why it doth not Rain in Egypt , and some other Countries . In some Countries it never , or very seldom Rains , as in Egypt , and more especially the upper parts of it . And the same is also asserted by PLUTARCH concerning Lybia , and some Countries of India , which are always dry , and never refreshed with any Moisture . V. Why Rains are more frequent in some Countries than they are in others . I cannot conceive that this is to be ascribed to the over-great Heat that reigns in those Countries , seeing there be others that are much Hotter , where it doth Rain . Wherefore the cause of this want of Rain , may with greater probability be attributed to the Dryness of the Earth , and the disposition of its parts , that have no water hidden under them , which being turned into Vapors might produce Rain ; or if there be any such Moisture , yet because of the over-close compactness of the Earth , the same cannot get out into the Air. For as Dogs do never sweat , because of the compactness of their Skins , which is such that they cannot make way for the steams to get through : So the ground of Egypt may be of such a close and compact texture , as not to have Pores large enough for the transmission of Vapors . Neither can the Etesiae , which blow from the Mediterranean Sea towards Egypt conveigh any Clouds thither , that might turn to Rain ; for it is not probable , that Vapors can be carried so far by the force of Winds ; and besides , these Winds are not continual , but altogether cease at the first approach of the Night . Rains are more frequent in some Countries than in others , as in Languedoc in France , and in Ireland , &c. The Reason is , because the Situation of these Countries is such , that the Clouds which proceed more abundantly from the Sea , than the Earth , being full loaden by that time they come there , are forced to fall to the ground . It is found by experience in Languedoc , that the Clouds that come from the West , where the Ocean is , and those which rise from the South , where the Mediterranean lies , are so loaden with Rain , the former when they arrive in the upper Languedoc , and the other in the lower , that they can pass no further without falling down : But yet so as that those Clouds that come from the Ocean , do seldom come to the lower Languedoc , nor those from the Mediterranean to the upper ; whence it is that it seldom Rains , with a West or North-west Wind beyond Carcassone , in the way towards the lower Languedoc ; as it very rarely Rains with a South Wind , or South-West , beyond the same City , towards the upper Languedoc . And forasmuch as the force of these 2 Winds is spent about this place , it cannot be otherwise but that the Clouds must there fall down into Rain , which is the very reason why the Rains are so abundant about that City . VI. What is the cause of those continual Rains that fall betwixt the Tropicks . Between the Tropicks almost continual Rains fall from July to September . The Reason is , because the Sun at that time doth extreamly rarefie the Air that is in the Northern part of the World , which makes the Air that is in the South part , to drive that way , and in its passage takes along with it all the Vapors that arise from the Sea of Aethiopia and the East-Indies , which are very copious , and being come between the Tropicks , where the Air is hotter than else where , they are forced to turn into many small drops , which falling down in Rain , abundantly moisten the Earth , and make the heat of those Countries the more supportable . VII . What is the cause of the raining of Milk and Blood. It Rains sometimes Milk and Blood. Thus PLINY tells us in the 56 Chapter of his natural History , that it rained Milk when M. Acilius and C. Porcius were Consuls . And LIVY makes mention of a Bloody Rain in his 4 Decad ▪ Book 9 th which fell for 2 Days together , in the Yard of the Temple of Concord . And amongst our modern Authors GEMMA FRISIUS relates Libro 2. Cosmocrit . cap. 2. that in the County of Embden in East-Friesland it rained Blood one Night in that abundance , that for the space of 5 or 6 miles all the Herbs and Linnen Cloth , and all things else exposed to the Air , were changed into the colour of Blood. GASSENDUS supposeth Milky Rain to be nothing else , but a Whitish water , made so by the mixture of some Particles of Lead , Sugar of Saturn , Saltpeter and Vinegar , which are proper to tinge water of a White colour . And that a Bloody colour'd Rain proceeds from Vitriolick and Bituminous steams , which impart a Red colour to the drops of Rain , as soon as they reach the ground . But it seems more probable , that these Rains are the product of Vapors , which proceed from places that abound with Red-Lead , or Ruddle : As Historians tell us , that Red Snow sometimes is seen to fall in Armenia , because of the Red-Lead wherewith that Country doth abound , or from places where much Blood hath been shed ; or this Red colour may be occasioned by the extream heat of the Sun ; as we see that the Urines of those who are sick of an Ague or Fever , look Red , and the water that is made to run through hot Ashes acquires the same colour . VIII . What is the cause of those Bloody spots , that are sometimes seen upon Stones Some are of Opinion that the Bloody spots which sometimes are seen upon Stones , do not proceed from any Rain of Blood , but are caused by Caterpillars which turn to Butter-flies , and upon the changing of their Skin , leave those Bloody spots behind them : Which they confirm by this , first , that these spots can scarcely be ever washt off with water ; and in the next place , because they are never found on the tops of Houses , and very rarely in Towns , but frequently in the Country , and in those holes where Caterpillars commonly do nestle . IX . The cause of a Silver Rain . What some relate of a Silver Rain , is not so altogether improbable , that it should be rejected as fabulous ; seeing it is possible for Quicksilver to be sublimed so high in the Air , as that afterwards it may fall down in drops again , which may very well by the common people be taken for Silver drops . And that this is the true cause of this kind of Rain , may be confirmed from what the Historian DION hath Recorded , that it rained Silver in the Reign of the Emperor Severus , which lighting upon pieces of Copper communicated the colour of Silver to them , which after 3 days time vanished again . X. Whether it be true what Avicenna relates , that a Calf rained down from Heaven . AVICENNA tells us , that a Calf fell down from Heaven to the Earth in a great Storm of Rain . I do not think that AVICENNA ever supposed that this Calf could be produced in the Clouds , or that there is any matter in them proper for the generation of Animals : But only that the Calf might have been snatcht up with a Whirlwind , and cast down elsewhere with a shower of Rain . For the Fluid substance of Heaven is altogether unfit , for the forming of such Bodies ; neither could a thing of that weight be kept up in the Clouds , but would fall down , before it was fully formed . XI . Of the Mouse called Lemnar which falls from the Clouds in Norway . And we are to pass the same Judgment , concerning that Norway Mouse called Lemnar ; for tho' it be supposed to come down out of the Clouds , yet OLAUS upon dissecting of one of them found some raw Herbs in its Stomack , which is a pregnant Argument , that it was never generated in the Air , but snatcht up from the ground by some strong Wind , and carried into Norway , as it is certain that Locusts are sometimes after this manner carried from one place to another . XII . What i● the cause of the Raining of Frogs . There is nothing more common amongst both antient and modern Writers , than the Raining of Frogs , wherewith the Fields , Hills and Ways have been frequently after such a shower , covered and annoyed . Tho' I dare not absolutely deny , but that Frogs may be generated in the Clouds ; yet neither can I wholly assent to those , who do so confidently assert it . My reason is , because we never read of their falling upon the Tops of Houses , or into Rivers , but either in the high ways , or other places abounding with dust , and perhaps their Spawn , of which , upon the falling down of the Rain it is probable they are formed . This conjecture of mine is confirmed by AELIAN in his 2 Book of Animals Chap. 5. I remember , saith he , that in my Journy from Naples towards Dicaearcia , it rained Frogs , that had their fore-parts formed , so that they crept with their fore-Legs , whilst the hind part of them was nothing , but a muddy slime without form . Which is a very pregnant Argument , that these Frogs were formed out of a Seed in the said Dust , mingled with the fallen drops of Rain , and that consequently they had their rise not in the Clouds , but on the Earth . Besides , when should the Air or Clouds be furnished with matter , proper for the generating of such vast multitudes of Frogs ? Or how could they be kept up in the Air without falling down ? Or why should they at last fall down , before they were perfectly and fully formed ? Wherefore it is most probable , that these and all others that seem to come down from the Clouds , are generated in manner as above said . Thus we see , that after the over flowings of Rivers many Insects do swarm in the Fields : And that after Rain , a vast number of Snails are produced ; so likewise Oysters and other Shell fish are sometimes formed of the drops of Rain , mixing with Mud or Slime . XIII . The Seed of Frogs may be carried up to the Clouds . Except it be said that the Seeds of these Animals , being mingled with the Vapors or Winds , may be sometimes carried up to the Clouds ; as they are at other times to Pools and other places , abounding with Mud and Moisture . As we read that Coals , standing Corn and other such like things , have been carried away by the Wind into other places , where falling down , the people concluded that it rained Coals , Corn , &c. XIV . But it is most probable that they are generated on the Earth . But indeed it seems more probable , that these Frogs were at first generated in Ditches or other places , but that at first they are so little as not to be perceptible by the Eye , they being for some days after they are first hatcht very small without Feet , and with a long Tail , without bearing the least resemblance with Frogs ; and do afterwards by degrees get Feet , and lose their Tails . So that hiding themselves under the Hedges , and under the Grass , it is a difficult thing to discern them from the Dust or Mud of the Ground ; so that the Rain serves only to bring them forth out of their lurking Holes , and present them to our view . And that this is so , we have the greater reason to believe , because Food hath been found in their Stomacks , and Excrements in their Guts . So that we may well conclude , that these Frogs are not then formed , but only do then first appear , tho' they were long before . XV. The Sun shining at a time when the Heaven is covered with Clouds , is a great sign of Rain . The Sky covered with Clouds , is a sign of Rain , tho' the Sun may shine very clear in the East . The Reason is , because there are no other Clouds in the Neighbourhood of our Air towards the East , which might hinder the Heat of the Sun , from condensing those that hang over our heads , or raise new Vapors from the Earth , whereby the said Clouds might be encreased . But this cause taking place only in the Morning , if it doth not Rain before Noon , it can be no sign of what will happen in the Evening . XVI . Signs of Rain taken from inanimate things . Other signs of approaching Rain are these ; the Sun shining bright early in the Morning , or appearing of a Blewish colour ; for this is a token , that there is great store of Vapors in the Air. So likewise when the Moon appears of a Pale colour , it is a forerunner of Rain : And when the Stars seem to twinkle more than ordinary . Yellow Clouds also near the rising of the Sun , are a prognostick of Wet-weather ; but the same colour'd Clouds in the Evening , do promise Fair-weather the next day . For the Vapors at Sun-rising are carried upwards , and are resolved into Rain . XVII . Signs of the Weather appearing in Living Creatures , and other things . From other inanimate things and Animals , Prognosticks may be taken of the changes of Weather ; for the subtil Vapor which is diffused in the Air , enters into the Pores of their Bodies . Hence it is that Doors creak , that Wood laid upon the Fire crackles . And as for Animals , Kine lift up their Heads towards Heaven , Gnats and Flies ▪ sting more violently , Hogs pick straws , Earth worms creep forth out of the Earth , Pismires retire to their hillocks , Leeches swim on the top of the Water , because they then lye in wait for Flies and other Insects , which the steams or winds do bear down toward the Earth . Frogs croak more frequently , because they delight in a moist Air ; or because they are more prest upon by the lowering Clouds . XVIII . Why the drops of Rain are greater i● Summer than in Winter . The drops of Rain are commonly greater in the Summer , than in the VVinter . The Reason is , because the drops in the Summer , do fall down from a much higher place , and having a long tract to pass through the Air , they grow bigger in their passage . For Rain falls from the Clouds 2 several ways , either when the lower Air by giving way , or the upper Air by falling upon the Clouds , doth give them occasion to fall down . Wherefore when the Air that is under a Cloud doth contract it self , then a small Rain like dust falls down upon the ground . So in Egypt no Rain is known , but what falls down in very small drops . But thick Rain and violent Showers happen when a Cloud descends being born down by the Air that is above it ; for then the drops of VVater falling down from a great height , do meet with other particles of water , and joyning with them become greater than they were before . CHAP. V. Of Hail and Snow . I. Why Hail falls more commonly in the day time than at night . HAIL falls more generally in the day than at night , and oftner in the Spring , Summer and Autumn , than in the VVinter . The Reason is , because a Cloud cannot be melted but by Heat , and therefore it is that Hail falls only at that time , when there is sufficient Heat to produce this effect . Wherefore tho' Hail may be generated in the VVinter , Spring , Summer and Autumn , and in the night , as well as in the day ; yet does it fall more seldome in the night , and in Winter , because then the Heat is too weak to be reflected up to the higher Clouds , so as to dissolve them into drops of water of which Hail is made . II. Why the less Hail-stones are Transparent and the greater Opake . Small Hailstones are sometimes Transparent ; whereas the greater are only so towards the Surface , having some Snow within them , and are of a white colour . The Transparency of Hail proceeds from the coldness of the VVind , which freezeth the drops of water into Ice . Because in this case , the Pores remain much the same as they were before in the water , through which the Globuli of the 2 d Element passing without hindrance , transmitted the action of Light every way in Right lines : As was said before concerning Glass . But when the cold VVind approacheth the Flocks of Snow , that are not quite melted , it drives the Heat , that is , the most swiftly agitated subtil matter into their Pores ; because the VVind it self , cannot so easily or so swiftly enter them as the Heat or subtil matter that is in the Air can . Now when this Heat is thus shut up within the Pores of these Flocks of Snow , it endeavours to approach their Circumference , rather than their Centers , because the subtil matter ( in the agitation whereof Heat consists ) is more freely moved there , and so proceeds to melt them more and more , before they begin to Freeze again , and the most Fluid , that is , the most agitated particles of water , which are else where found in the said Flocks , approach to their Circumferences ; the rest of them , which cannot melt so suddainly , abiding about the Centers of them . Which is the reason , why the greater Hail-stones are Transparent towards their Surface , and inwardly of a white colour . III. What is the reason of the unusual greatness of some Hailstones . Sometimes Hail equal in bigness to great Stones falls down from Heaven . And I have heard an acquaintance of mine relate , that he had seen Hailstones as big as ten Eggs. And Historians relate of some that were no less than a mans Fist . In the year 1666 , in Gelderland , some were seen of about 3 pound weight . This bigness proceeds from the Cold VVind , by which the Hail is formed , which driving the Snow downwards from on high , drives many of the Flocks of it together , and by means of the Cold condenseth them into one Mass . Or else we may say , that such great Hailstones are generated in the highest Clouds , and that they encrease continually all the way they come down , and by this means grow into a great and extraordinary bulk . For it may so happen , that they may meet in their way with much moisture , which sticking to them , may be Frozen into one Mass with them . And by this means the Hail is encreased , by the addition of new Surfaces or Coats : As we find that Candles by repeated dipping into the melted grease , do still grow thicker . IV. Why Hail-stones are of different figures . Hailstones are sometimes of a Spherical figure , and at other times appear under various configurations . The Reason is , because the Flocks out of which the Hailstones are formed , being seized of the Cold VVind , are congealed by it . For if the Cold VVind , that is the efficient of Hail , meets with drops of water already formed , it makes the Hail-stones round , save only that it frequently makes them somewhat flattish on that side , where it drives against them . But if it meets with Flocks of Snow that are not quite melted , then it frames them into irregular figures . V. What is the reason of the great noise that is heard before the fall of Hail . Commonly before the Hail comes down , a great noise is heard in the Air. This is caused when the frozen drops dash against one another . And when this noise is heard some interval before the Hail falls , it is an Argument that the said Hail is formed in the upper parts of the Air ; so that there is no necessity at all in this case , to have recourse to an Antiperistasis . VI. How the Snow comes to be condensed . We find by experience , that the Snow whereof the Clouds do consist , becomes condensed , and reduced to a less extension . To apprehend this well , we need only to consider that the Heat which commonly rarefies most Bodies , doth commonly condense Snow , the parts whereof are so scatter'd and divided , that the very least agitation is sufficient to bring them nearer together . Whence it comes to pass , that when the Air which is so near to the Earth , and is always hotter than that which is at a greater distance from it , begins to raise it self towards the Clouds , either by the driving of some VVind , or by the action of some new Fermentation , which causeth it to swell , it cannot but condense the Snow , whereof the Clouds do consist . VII . What is the reason of Starry , Rose-like and Hairy Snow . The particles of Snow are commonly figured like Stars , as may be perceived by catching the Flocks of Snow on a dry Cloth , and separating the parts of it from one another : Tho' sometimes also they be found Hairy , and sometimes in the figure of Roses . The reason of this various Configuration is , because the Flocks of Snow , before that they fall to the ground , do undergo manifold changes in the Air , and according to the vicissitudes of Heat and Cold partake of different figures . Starry figur'd Snow is formed , when the Leaves of it , as the Heat approacheth , are melted leisurely , so that the Liquor into which they are dissolved spreading it self over the Surfaces of the Leaves , doth fill up all the little inequalities it meets with there ; and makes them so smooth and even , as those parts of the Liquid Bodies are , tho' it presently after freezeth there again . For seeing that the Heat then is no stronger , than what is required to resolve those small Capillaments , on all sides surrounded with Air , into water , the others still remaining whole and entire ; it cannot be strong enough , to hinder that small quantity of water , that is fallen upon their Icy surfaces , from being congealed again by Cold. Afterwards this Heat passing through other Capillaments , which every one of the Flocks of Snow have in their Circumference , where they are surrounded with 6 other such like Capillaments , doth promiscuously bend this way and that way those Capillaments which are at the furthest distance from the 6 nearest Globuli , and by this means joyns them to those which stand over against these 6 Globuli . For these being kept Cold by the neighbourhood of the said 6 Globuli , do not melt , but on the contrary do immediately Freeze or turn to Ice , the matter of the others that are joyned to them ; and by this means 6 Points or Rays are formed about every one of the said Flocks , which are capable of receiving divers figures , according as they are more or less comprest , the Capillaments thick and long , and the Heat which forms them slow and moderate . Again , Hairy Snow is generated , when the Icy particles whereof the Flocks do consist , are condensed by the Heat , and soon after being Frozen by the Cold , are turned about their Center , and are bound up by other Icy fragments . So likewise Snow formed in the figure of Roses is produced when the Rays that shoot out from the Snow , are bended by the Heat , and falling together with their points , are in that manner congealed again . VIII . Why Snow is visible in the Night . The Night , which renders most other Bodies invisible , hath not that effect upon Snow . The Reason is , because Snow consisting of an infinite quantity of little round Bodies , doth reflect the Rays of Light better than any other white Body . For tho' in the Night there be but a very weak and scatter'd Light spread over the Earth ; yet there is that in Snow , which by a stronger Reflexion of it , doth make it self visible . IX . What is the Cause of the great whiteness that is in Snow , and why the same is changed when water is cast upon it . An extraordinary whiteness is proper to Snow , which yet it loseth , when mixed with water , and returns to water , whence it proceeded at first . The Reason is , because Snow is like a Vapour turn'd into Froth , the Flocks whereof consisting of innumerable Globuli , reflect the Light every way ; forasmuch as there is never a Point in all those Globuli , from which Rays are not reflected to every Point of the Medium . And this is the Reason why Snow is hurtful to the Eye-sight , because that by reason of the foresaid Globuli , it darts forth on all sides a fuller and stronger light . Hence it is , that when we come into a House , after we have walked through Fields cover'd with Snow , we cannot well discern the Objects we meet with . It is also found by Experience , that those who live in places that abound with Snow , have weak Eyes ; and some tell us , That Souldiers , by long Marches through places cover'd with Snow , have lost their Sight . X. How the Snow comes to change its colour . But if the new fallen Snow seems to be of a blackish Colour , the Reason is , because some Cavities are interspersed between the flocks , which swallow up the Rays , and do not rebound them back into the Air. But Snow wholly changeth its colour , when mingled with water , which filling up the Cavities of the Snow , hinders the Reflexion or Refraction of the Rays , and causeth the Light to be modified after another manner . Hence it is that the white Colour of some Fruits , is only owing to the parts of it that are formed into Bubbles : For we see that Apples , when squeezed , lose their Colour , because these Bubbles being broken by this compression , hinders that Refraction which is necessary to constitute a white Colour , as likewise such a copious reflexion of Rays , as is requisite to that purpose . XI . Why the handling of Snow makes the Hands to glow . Upon the handling of Snow , we find our Hands soon after to glow and burn . Some suppose this to be done by an Antiperistasis , because when the Cold is driven out , Heat is introduc'd . But we own no such Contrariety in Nature , and therefore rather conclude , that this Heat proceeds from the Frozen particles of Snow , which having the watry humour for their Vehicle , do enter into the pores of the Hand , beat back the Blood , and hinder it from being dispersed through the Veins in the Hands ; by which means the Hands swell , and appear of a red Colour . And therefore if we chance to put them to the Fire , we are sensible of a very sharp pricking and shooting pain ; for the Fire being forceably thrust into their pores , doth dilate the Icy particles more than ordinary , and doth not drive them thence , without some twitching of the parts . Wherefore we ought to keep our Hands in a moderate warmth , to grow hot by degrees , and so be restored to their former condition . XII . Snow preserves the Corn in the Ground from being frozen . Snow , tho' it be a Frozen-water , yet doth warm the Earth , and keeps the Corn from freezing . The Reason is , because the pores of Corn , that is cover'd with Snow , having been drawn together by the fore-going Frost , and the Matter of the 2 d Element , endeavouring to enter through them , as soon as it begins to thaw , would not fail of rending the Texture of its parts , if it were not hindred by the presence of the Snow , which having nothing in its pores , besides the most subtil matter of the 2 d Element , can easily open again the pores of the Wheat by degrees , without tearing them , till they be open'd large enough to let the biggest Matter of the 2 d Element pass through them . XIII . How Snow conduceth to make the Ground fruitful . Snow doth also contribute to the making of the Ground fruitful , if it lye on for some time , and be dissolved by degrees . The Reason is , because when Snow covers the the Ground , it keeps in the Alimental Juice of Plants , and hinders the strength of the Ground from evapourating into Steams and Exhalations . And therefore Countrymen tell us , that their Grounds yield a more abundant Increase , after they have been a long time cover'd with Snow , because it keeps back those fat Exhalations , which would otherwise break forth , and turns them into Aliment for the Fruits of the Earth . Or , it may be said , that the Snow melting by degrees , doth afford a fat and cherishing Moisture to the Plants ; whereby they are fed , and become more vigorous . As is manifest when the Snow is thaw'd , and the Earth expos'd again to the heat of the Sun ; and therefore it frequently happens , that in those Mountains that are cover'd with Snow , the Exhalations that break forth , do make a kind of Arch or Crust , under which the Grass springs forth very thick . XIV . How Snow may be hurtful to the Roots of Plants . I know well , that some Physicians are of another Opinion , who order Gardiners , to cover the surface of the Ground , in which Plants are set , with Stubble or Straw , to preserve it from the injury of the Snow : But I suppose they do not give these Instructions , because they suppose the Snow to be prejudicial thereunto , but lest the Roots being throughly moistned by the thawing of the Snow , a sharp Cold or Frost following upon it , might freez the Juice within their pores ; since it is evident , that the Roots of Plants throughly soak'd therewith , do presently dye ; nothing being more hurtful to Plants , than melted Ice or Snow , to chil and kill the Roots after a cold Thaw . CHAP. VI. Of the Dew , Hoar-frost , Honey and Manna . I. Why the Dew is more copious in moist , than in dry places . THe Dew is observed to be more copious in moist and moorish Places , than in dry . Hence it is that the Banks of Rivers are commonly cover'd with Dew , when in dry and barren places there is no appearance of it . The Reason hereof is commonly ascribed to the Vapours which mount up from the Earth in great abundance , about the Banks of Rivers , and being raised a little way up into the Air , do fall down to the same place whence first they broke forth . But I cannot altogether concur with this Opinion ; forasmuch as the highest Mountains are in the Summer moistned with Dew , and in the Winter cover'd with Hoar-frost . For Vapours are not only condensed near the Earth , but also on high in the Air : For those which are carried up a great height by the Sun's force , are afterwards by the cold of the Night condensed and turned to Dew . And whereas Shoars are more abundantly cover'd with moisture at Break-of-Day , than other more dry places ; the Reason is , because the dry Earth drinks up the Drops of Dew as fast as they come down upon it , and does not suffer them to be condensed on the surface of the Ground . But Shoars , or the Banks of Rivers being , as it were , glutted with moisture , do not take in the Dew , but leave it on the surface . Thus the drops of Dew run together upon Cabbage-Leaves , because their surface is somewhat fat and oily ; but are immediately drunk up , when they light upon Sand. II. Why the Dew is more copious in the Spring and Autumn , than at other times . The Dew is observed to fall more copiously in the Spring and Autumn , than in the Winter or Summer . The Reason is , because in the 2 former Seasons , the heat of the Sun is strong enough to raise Vapours , and the cold of the Night sufficient to condense them ; whereas in the Winter , the Plants being depriv'd of their Leaves , are no longer able to turn the Vapours that light upon them , into little drops : And the heat is so violent in the Summer , that the Vapours can't be sufficiently condensed , by the cold of the Night , to fall down again into small drops . III. Why the Drops of Dew are round . The drops of Dew are Round , or at least resemble the figure of an Hemisphere . The Reason is , the motion of the particles of the 2 d Element , which equally pushing upon all the parts of the drops of Dew , makes them to be equally distant from the Center . For as the water of a River running freely through the Herbs it meets with in its course , is so diverted by the Stones that interrupt its Current , that re-bounding upon it self , it makes several little Whirl pools : So the Globuli of the 2 d Element , freely flowing through the Earthy parts wherewith they are interrupted , their fluid parts are so diverted by the Air that meets them , that turning into a Round drop , they drive the Terrestrial parts of the said Drop , with an equal force towards the Center . For then any liquid Body becomes round , when all the parts of the Circumference of that Body , being driven with equal force , are at an equal distance from the Center of that Body . IV. When no Dew is found upon the Ground in the Morning , it is a sign of Rain . If in the Morning the Ground be not sprinkled with the Dew ; and that the Mist which is wont to moisten the Earth , is carried upwards , and leaves the Earth wholly dry , this is a sign of Rain . The Reason is , because this can scarce happen , but when the Earth hath not been sufficiently cooled in the Night , or over-heated in the Morning , and therefore sends forth many Vapours , which driving the Mist upwards , cause the Drops of it to run together , and by this means become so thick and heavy , that soon after they are forc'd to fall down in Rain . V. Why the Hoar-frost makes some Herbs more tender . The Hoar-Frost is observed to make some Herbs more tender , as Coleworts , and the like , which being in Winter expos'd to the Air , become more short and tender . The Reason is , because the supervening Cold doth constringe , and , as it were , draw together those Herbs , and by bringing together their particles nearer to one another , doth quite change the order and situation of them . So as that having already undergon this preparatory Alteration , when the Culinary fire begins to act upon them , their Texture is easily broken , and their Fibres being before lessened , and in part dissolved , are wholly separated from one another . Thus Flesh , exposed to the cold of the Night , becomes also more tender , because the parts of it being more closely joyned and drawn together by the cold are afterwards slackned by the heat , and more readily comply with its motions . VI. Why the parts of Hoar-frost hang together . The parts of Hoar-Frost stick together , the contrary of which we Experience in Hail ; which is distinguish'd into several Stones , which have no Connexion at all together . The Reason is , because Hail stones falling from on high , as soon as they are come to the inward Tract of the Air , because of the great heat they meet with there , their outsides begin to melt , and lose their prominent particles , which make them rough ; but the case is not so with the Hoar-Frost , which always retains its sharp-pointed protuberances ; and therefore the particles , by reason of this their Roughness , are easily entangled and cling together . To which may be added , That the Hoar-frost consists of a more viscid or clammy substance , than Hail ; because the Rain , whereof Hail is made , is meer Water , which presently mounts up into the Air : Whereas the Hoar-frost is a kind of condensed Dew , which is much fatter than the Rain , as being made up of diverse particles , proceeding from Animals , Plants , and Things dug out of the Ground . Now it is manifest , that a moisture that is extracted from such great variety of Bodies , must needs be more clammy , than a pure watry Humour ; which is the reason why the parts of Hoar-frost cling together , whereas Hail-stones are all several . VII . How Honey is made by Bees . Those who give their minds to Husbandry , and more diligently search into the Miracles of Nature , observe that Bees do in a very short time make Honey , and fill their Hives . Some , who have been very exact Observers of the Labour of Bees , have observed , that the Bee-Hives are sometimes quite Empty in the beginning of May , and within a short time after have found them fill'd up with Honey . Book . 2. Part. 6. Chap. 7 To the Worshipfull Francis Gosfright of the Citty of London Esqr. This Plate is humbly Dedicated by Richard Blome . VIII . Why Honey is not gather'd in all places . Tho' Honey be made of Dew , yet is it not gather'd either by Bees , or Men , from Plants , in all places . The Reason is , because these Exhalations do not every where meet with such a disposition , as is proper to retain them ; for seeing that the most clammy and Earthy particles of the Dew , are the chief Matter of Honey , and that these can only be gather'd in dry places , we cannot think it strange that these are not found on the moist Leaves of some Plants . Hence it is that Bees do not gather their Honey very Early in the Morning , but after that the watry Vapours have been dispersed by the heat of the Sun. IX . What is the Reason of the difference of Manna in several Countries . Manna is very different , according to the Countries where it falls , and is only gather'd from the Leaves of some certain sort of Trees . PLINY's Opinion is , that it is most commonly coagulated upon Oaks or Lime-Trees . In Calabria , it is chiefly found on Ash-Trees , and in Syria , on Cedars . The Reason is , because Manna is only coagulated on the Leaves of Trees , which contribute much to its consistence and hardness . For seeing that Manna only consists of Exhalations , its particles are of such figures , that they cannot so well stick close to the Leaves of other Trees . And therefore the Lord BACON tells us , that the Country of Calabria affords the best Manna , and in the greatest plenty ; for he supposes , that there is a kind of Coagulating virtue in the Leaves of Mulberry-Trees , on which it is commonly gather'd , whereby the Dew is thickned . Which Virtue he is the rather inclin'd to attribute to the Mulberry-Leaves , because they are rough and hairy , and therefore very proper to retain a Liquor that lights upon them . But yet this Juice must not be confounded with Honey , forasmuch as it is of a different Nature , and different Efficacy : For Honey doth stimulate and increase Gall , whereas Manna drives it out of the Body ; for the Nitrous Salt , which Manna is not destitute of , doth provoke Nature to evacuate by Siege . CHAP. VII . Of Storms and Thunder . I. Storms at Sea are more violent than about the Shoar . THe same Storms rage more violently on the Sea , than on the Land. The Reason is , because the Vapours that are sublimed from the Waters , are more moist and gross , than those that breath forth from the Earth , and that proceed from dry Bodies . Hence it is that those Steams carrying more Air and Exhalations along with them , do furnish Matter for the strongest Winds , And for the same Reason it is , that Winds in all places are not endued with the same Qualities ; but those which are dry in one Country , may be moist in another . Thus it is observed , that South-winds , which generally in all places are moist , yet are dry in Egypt , where the dry Desarts of Africa , parch'd with heat , and destitute of all moisture , supply the Matter of them . II. Why Swallows , upon the approach of a Storm or Tempest , fly near the Earth . Swallows , upon the approach of a Storm , fly near the Earth . The Reason is , because the Clouds which then fall lower , and press down the intervening Bodies with their weight , drive the Flies , which Swallows feed upon towards the Earth , which in Fair-weather are wont to fly aloft in the Air. III. What is the reason of those dreadful Storms called Travados . The Sea doth never Rage more dangerously , than in those Storms which are called by the Portuguese , Travados , these of all other being most formidable to Sea-men . These Tempestuous Gusts are chiefly perceived beyond the Cape of Good-Hope , because there , the Vapours , which in great quantity are raised from the Sea of Ethiopia ( as being of a vast extent , and exposed to the greatest heats of the Sun , ) can easily produce a West-wind , and stop the violence of those Vapours , which proceed from the Indian-Sea ▪ that is opposite to it ; and by this means drive them together into a Cloud : Which Cloud , since it riseth from the Inequality that is interposed between those two great Seas , and this Tract of Earth , which is also of a vast breadth , must of necessity be of a greater bulk , than that which is formed in our Regions , where it depends only on those lesser Inequalities , which divide our Champion Countries , and separate Lakes and Mountains : So that this high Cloud , having acquir'd a great weight , doth fall down all together , and driving the Air before it , raiseth a great Tempest , which commonly is so much the more vehement , the lesser the Cloud did appear at first ; because it is supposed to be very high , and at a greater distance from the Earth . Now it is evident , that the force of a Ponderous Body , is by so much the stronger , by how much higher the place is whence it descends , and the greater the Space is it runs through . IV. In what Places these Tempests are most freq uent . These Storms are frequent about the Equator , especially in those Months in which constant Winds are less frequent . They are very common upon the Coast of Guinea , and at the first their Force is very violent , and by the help of them Sea-men often pass the Line , forasmuch as the setled Winds are now and then wanting in the Months of April , May and June , and also at other times . Wonderful Storms of this kind do also happen in the Entrance of the Sea of Arabia , when a thick and black Cloud , mixed with a number of Flame-colour'd little Clouds , like a Burning-Furnace , vomiting thick Smoak , darkens the Day , whereupon a sudden and most vehement ( but not long lasting ) Storm ariseth , which casts down a great quantity of red Sand upon the Land and Sea. V. Whence proceeds that boyling of the Waters , which is observed in the Gulf of Lions , and in the Garonne . In the Gulf of Lions the Waters are sometimes as much agitated , as in the most violent Storms , tho' the Air be very calm . This extraordinary Agitation proceeds from those Vapours , which penetrate quite through the Waters . For it cannot be question'd , but that there is an inward Heat at work under the Sea , besides that of the Sun , which loosens , or sets at liberty a vast number of Vapours and Exhalations , which proceed with extraordinary precipitancy , and in great abundance from the said Gulf of Lions . And from the same Cause we may deduce the Boyling or Agitation that is observed in the River Garonne in France , near to Bourdeaux , which is an infallible prognostick of a certain Wind called Mascaret ; and conclude it to be produc'd by Vapours or Exhalations , which ferment or work successively from Bourdeaux , towards the Head of the River ; as that Ebullition which is observed in the Gulf of Lions , is caused by the Vapours and Exhalations , which in that part mount up in great abundance through the Sea. VI. What is the Cause of those Hurricans that happen about the Caribby Isles . Hurricans are very frequent in some of the Caribby Islands . The Reason is , because many sulphurous and Nitrous Exhalations are sublimed from divers parts of the Earth , that lies below that Sea , which do agitate the Waters with that extream Violence . Whereof this is a pregnant Instance , That after every Hurrican , a vast number of Fishes are found dead ; which shews , that the Waters have been violently dash'd together , not only on the surface of the Sea , but at the bottom also . VII . Of Castor and Pollux , and why they are accounted to be signs of a happy Voyage by Sea-men . It sometimes happens in great Storms , that certain Meteors , in the appearance of Fire , fix themselves on the Tops of Masts , which are called by Sea-men Castor and Pollux , if there be two of them ; but if only one appears , it is called Helen : The former being look'd upon to be a happy Omen ; but the latter , unhappy , as portending an increase of the Storm . These Fires are produc'd by Exhalations , which are mix'd with Vapours , that compose a Cloud ; which , forasmuch as by reason of the solidity of their parts , and their irregular figures , they cannot be pusht forwards by the falling Cloud , with the same force as the Vapours are , by the motion of the Air , are separated from them : And accordingly these Exhalations being united into several Curles , flying as high as they can along with the Cloud , meeting with Ships in their way , stick to the Masts , or to the Tackle ; the Cloud in approaching to the end of its motion , driving them down thither . And the Reason why two of these Fires are a sign of better Hope , is , because Storms are commonly more violent towards their going off ; and therefore when these Fires are more than one , the Tempests are broken , and many Clouds lying one upon the top of another , are in a short time dispersed . But when a single Fire appears , a greater Storm is to be look'd for , because there may be many other Clouds remaining , which falling down , may with renewed Violence dash the Waves together . VIII . Why Thunder is more frequent in Summer than Winter . Thunder is much more frequent in Summer than Winter . The Reason is , because Thunder is caused after the same manner as Storms are , viz. by the falling of Clouds one upon another , that is , when the higher Clouds rushing down violently upon the lower , do produce that Noise in the Air , we call Thunder . Now this could not happen , if a warm Air surrounding the Upper Clouds , did not by degrees condense them , and make them more heavy . And seeing that in the Winter , a heat sufficient to melt the Upper Clouds cannot get up so high , it is evident that Thunder , for this Reason , must be more frequent in Summer . IX . What is the Reason of the different Noise that is made by Thunder . The Noise caused by Thunder is very different ; and doth not always strike our Sense of Hearing alike ; for sometimes it represents a continual Rumbling , and at other times the repeated Discharges of Great Guns . The continued Noise is to be ascribed to the various Reflexion of Bodies , and the Resounding of the ambient Air. For as the Noise caus'd by the Discharge of a Great Gun , is heard with a continued noise or rumbling , because of the Hills , Buildings , and other things , that beat back the Sound : So the rumbling Noise of Thunder is continued the longer , because of the Air that every way surrounds it , and the Bodies that are so disposed to reverberate it . And whereas Thunder sometimes gives different and interrupted Claps , the Reason is , because the parts of the higher Clouds , do either all of them fall down together , or one after another ; or more slowly or swiftly ; or , for that the lower Clouds are greater or less , thicker or thinner , and so make more or less Resistance . X. VVhy Thunder commonly ceaseth after a great shower of Rain . After a great Shower of Rain commonly the Thunder ceaseth . The Reason is , because the Upper Cloud falling upon the Lower , is of such force as to cast it wholly down ; and tho' perhaps it be not of force enough to drive it down altogether , yet it shakes out some flocks of Snow , which passing through the warmth of the lower Region of the Air , are turned into Rain . And it is for the same Reason , that Men endeavour to abate the violence of Thunder by the discharging of Guns ; for the Snow being shaken by the agitation of the Air , is discust , and forced to descend . XI . VVhy a great Noise dissipates Thunder . But we are here to observe , that tho' the Discharging of our Great Guns be useful to dispel Thunder , when the Clouds are somewhat remote from the places where the said Noises are made ; yet is the effect quite contrary , when the Clouds are directly over against those places . The Reason is , because when the Clouds that carry the Thunder , are at some considerable distance , the agitation of the Air , caused by the Sound is capable to disperse them , or at least to oppose their approach ; but when they are just over against the places where the Guns are discharged , the Air being shaken by their Sound , and dashing against the lower part of the Clouds , weakens them , and so determines them to break at the bottom , and to let the Lightning escape . XII . Why the Thunder is always heard after the Lightning , tho' indeed it be before it . The Lightning is much more swift than Thunder , and therefore is always seen before the other is heard , tho' indeed the Thunder is ever before the Lightning . The Reason is , because the Sight is performed by the help of the Heavenly Globuli ; which being solid , and not capable of any division , do neither waver nor turn aside : Whereas the Hearing is performed by the Tremulous Agitation of the Air , whose particles being very flexible , and separated from one another , do bend upon themselves and waver , not having the direct steadiness of the Globuli of the Second Element . XIII . Why fermented Liquors are apt to turn sower after Thunder . The Noise and Concussion of the Air , caused by Thunder , makes Wine and other fermented Liquors to be troubled , and change their former Qualities . The Reason is , because Fluid Bodies are not moved of themselves , but receive their agitation from the intercurrent subtil matter , wherefore also their motion must necessarily be proportionate to the Agitation of the said Aethereal Matter . And forasmuch as when the Aether is shaken with Thunder , the matter that is intercepted between the Pores of it , is very much dissipated , and put into irregular motions ; thereupon the particles of the Liquor are also variously tost and bent , and by this means do introduce a confusion in it . Thus Physicians also observe , that tho' the Blood be not changed at all as to its outward appearance , yet it contracts a malignant poisonous quality ; or on a suddain causeth a Fever , and this meerly from the disturbed motion of the subtil matter , which in a confused manner agitates the whole mass of Blood. CHAP. VIII . Of Lightning and Thunder-Bolts . I. Why the Lightning commonly strikes Steeples and Tall Trees . HIgh Places are more frequently struck with Lightning , than low and level Grounds . Hence it is that Mountains feel more its effects than Valleys ; and that the tallest Trees are most obnoxious to be hurt by it . The Reason is , because Lightning consists of kindled Exhalations ; which because of their loose Texture and volatility , are distinguisht from Vapours , and therefore rushing down towards the Earth , must rather strike the tops of Steeples and Mountains , than lower places . For the Lightning , upon the breaking of a Cloud , doth commonly dart forth from that part of it , which is most weak , and least able to resist the force of it : And seeing that Steeples , Rocks , Mountains and other Eminences do most of all oppose it , therefore the Clouds are most easily broken by meeting with such like Bodies , and consequently also discharge their force and violence against them . II. Why the Bodies that are struck with Lightning , do tremble a little before . Things that are struck with Lightning , do tremble before they are smitten , being shaken by the Wind. The Reason is , because when ever this Fiery Exhalation is darted from any Cloud , at the same time a great quantity of the Air that lies between the Clouds , is pusht away together with it : Which Air , as the Forerunner of the Lightning , shakes high Steeples , lofty Mountains and tall Trees , as being nearer to it , before the Lightning can reach them . III. What is the cause of the Stone , which is produced by Lightning ▪ and is commonly call'd the Thunder Bolt . Sometimes there is a Stone generated by the Lightning , which is discharged together with it from the Clouds , which is commonly called the Thunder-Bolt ; because it breaks all Bodies it meets with , and casts them down . This happens when many Fat and Sulphureous Exhalations , consisting of thick and dreggy parts , and like unto the setling of those ▪ Vessels wherein Rain water hath stood for some considerable time , are joined with those that form the Lightning . For as Experience informs us , that if we mix a certain proportion of Saltpeter and Brimstone with this Earth or Mud ; and then set this mixture on fire , it will in a moment be turned into a hard Stone : So in like manner we may conclude , that a Thunder-Bolt is generated of clammy and Terrestrial Exhalations , mingled with Brimstone , which it may meet with , either in the Cloud it self , or in its descent through the Air. Wherefore sometimes not only Stones are thus hurled down together with the Lightning , but also Iron , and other metals . AGRICOLA tells us , lib. 5. de Ortu Subterraneorum , that when it lightens in Persia , pieces of Brass fall down , which will not melt in the hottest Furnaces , but the moisture of them is turned into Smoke , and the rest of the Body into Ashes . IV. There is some reason to question the truth of these Thunder Bolts . But for all this , some think there is reason enough for us to look upon this Story of Stones , that are together with the Lightning discharged from the Clouds , as a meer fiction . Certain it is , that none of the Ancients ever made mention of it before AVICENNA : And it seems very strange , that if there be any such , none of them should ever be found in great Cities , such as London or Paris . V. How the Lightning can melt Gold in a Purse , and consume Wine in a Barrel , without hurting either the Purse or Barrel . Gold , Copper and Silver are by the Lightning melted in Peoples Pockets , without the least scotching of them : And the Wine that is kept in Barrels is consumed , without the least sign of hurt done to the Vessels . And MARCIA , a Roman Princess , being struck with Lightning when she was big with Child , had the Birth in her Womb killed without suffering the least hurt her self . Pliny , lib. 2. Cap. 51. These strange effects must be ascribed to the various matter whereof the Lightning consists . For some consist of very subtil Exhalations , which are of the nature of Volatil Salt , or approach to that of Aqua Fortis . Now such as these do not touch loose and soft Bodies , but break and dissolve those that are solid and compact , and do resist their force . And therefore no wonder if such sort of Lightning do melt Brass , Silver and Gold without touching the Purse or Bag wherein they are : As we see that Aqua-Fortis doth not corrode Wax , tho' in a very short time it dissolves Iron , and other hard metallick Bodies . Whereof SENECA gives this Reason in Chap. 52. of his Natural Questions . The Lightning , saith he , doth dissipate strong and solid Bodies with more vehemence , because they oppose a greater resistance to it ; whereas it frequently passeth yielding substances , without the least hurt to them : It contends with Stones , Iron , and other very hard and solid Bodies , because it cannot make its way through them but by force ; and therefore by extream violence opens it self a passage whereby it may get out . But on the other hand , spares loose and soft Bodies , tho' they seem the most proper for its Flames to fasten upon , because they let it pass without opposition . VI. How the Lightning 〈◊〉 the Wine in Vessels without touching them . As to the Lightning consuming Wine , without touching the Vessel ; the Reason is , because the most subtil matter , passing through the Pores of the Vessel , by its most swift and violent agitation , doth so diminish the parts of the Wine , and reduceth them to that extream littleness , that they can freely pass through the pores of the Vessel . By which means the Wine being wholly turned into Vapours , is in a short time thrust through the sides of the Vessel . Wherefore some , to prevent this disaster , lay a Bar of Iron with Flints and Salt upon the Vessel , which being hard Bodies , the Lightning exerts all its force upon them , and so the Wine or other Liquor in the Vessel escapes without hurt . VII . How Beer or Ale may be preserved from being spoiled by Lightning . Accordingly Mr. BOYLE assures us , that having seal'd up a Glass Bottle Hermetically , which he had fill'd with Beer ; he found upon the opening , that the Thunder had not in the least changed the Taste , or any other of its Qualities ; when at the same time that which was kept in Vessels was all turn'd sour . The Reason is , because the Exhalations that constitute the Lightning , being diffused through the Air , do penetrate the Vessels , but not the Glass . He also tells us , that when Smiths Coals are kindled in Wine-Cellars , when it Thunders and Lightens , it preserves the Beer from turning sour ; and this either because the Fire doth dispel and discuss those Sulphureous Exhalations , or because it dulls the force of them , by changing the Figure , Magnitude or Texture of the particles whereof the said steams do consist . VIII . How a Woman may have the Birth in her Womb killed by Lightning , without any hurt to her self . As to the Story of MARCIA , who being struck with Lightning , brought forth a dead Child ; this effect needs not to be attributed to the Power of Lightning , since probably it might be only the effect of her Fear ; who being affrighted at the Lightning , miscarried thereupon . Or if we will suppose that she was struck with Lightning , the cause why it killed the Infant in her Womb , without hurting of her , might be , because the Exhalations , whereof that Lightning did consist , was of an Oily Nature , and burning only with a weak Flame , could only exert its force upon the weak and tender Body of the Infant , without touching the Mothers Body , which was more hard and solid . For so we find that Lightning sometimes consumes soft and tender Bodies , without hurting those that are more strong and solid ; as the Hair , Cloaths , and the like , without any injury done to the Flesh : And that because the particles of the Exhalation , that form the Lightning , are like those of Spirit of Wine , which when set on fire do not touch a piece of Linnen so as to consume it , as being too weak and slender to separate the particles of the Earthly Bodies they meet with from others that are like to them , or from those of the 2 d. Element . IX . How Animals are kill'd by Lightning . These Exhalations are also supposed the cause of the death of some Animals , found dead without the least sign of Burning or Scorching . For by the violence of these Exhalations , Animals may be so overpowered , as that thereby their Muscles design'd for Respiration may grow stiff and without motion ; whereupon , no wonder if they be presently choaked . For these Exhalations may be so extreamly subtil and pure , as to be able readily to enter the Body , and hurt the inward parts of it , without the least sign of damage appearing upon the outward parts thereof . X. VVhether the Bay-Tree be never struck with Lightning . Nothing is more commonly received amongst Ancient Authors , than that a Bay-tree is never toucht with Lightning , as being endued with a peculiar virtue , which resists and repels its deleterious Spirits . It was for this Reason that the Emperor TIBERIUS wore a Crown of Bay-leaves , when the face of the Sky seemed to threaten Thunder and Lightning . And COLUMELLA adviseth to cover the Eggs on which a Hen sits with twigs of the Bay-tree . Some attribute this virtue of the Bay-tree , to the figure of it , which is very round , and hath a very smooth and close Bark : From whence they infer , that the Exhalations of the Lightning cannot fix upon it , but gliding from it , leave it untoucht . But this seems to be but a very weak Reason , forasmuch as Marble Pillars , which for Roundness and Hardness do far exceed the Trunk or Body of the Bay-tree , are frequently struck with Lightning , and damaged by it ; as CARDAN assures us , Subtil . lib. 2. At Florence in the Great Church is to be seen a Marble Pillar , struck and hurt with the Lightning . For I suppose it to be a meer Fable , what is commonly reported of the Bay-tree ; seeing that many Authors do assert , that Bay-trees have been sometimes struck with Lightning ; as amongst others the Conimbricenses , and Vicomercatus in his Comentaries upon Aristotles Treatise of Meteors , by several instances proves the exemption of the Bay-tree from being hurt by Lightning , to be fabulous . The Reason probably why the Ancients attributed this virtue thereunto might be , because they abound with Balsamick , Odoriferous and Spirituous Steams , which may be of some force , in keeping off the efficacy of poisonous Exhalations . Tho indeed it be not at all probable , that the Leaves or Stock of the Bay-tree should be of such a superlative virtue , as to resist the force of Lightning , or to secure those that shelter themselves under its Branches , or wear the Leaves of it . And the same may be said of Coral , whatsoever PLINY saith to the contrary , Lib. cap. 55. XI . VVhether a Sea Calf can never be hurt with Lightning . Authors assure us , that Sea-Calves are never struck with Lightning ; and for this Reason the Generals Tents were used to be made of the Skins of this Animal . And SUETONIUS tells , that AUGUSTUS CAESAR was so afraid of Lightning , that he always had some of them along with him in his marches . Book . 2. Part. 6. Chap. 9. Frema● In CHAP. IX . Of the Rainbow . I. The Primary or Original Rainbow is of more strong and lively Colours than the Secondary . THE Primary or Original Rainbow , and which for the most part doth appear alone , is of more strong and sprightly Colours , than the Secundary , which is seen above the former ; whose Colours are not only weaker , but also appear in an opposite situation to those of the Primary Rainbow . The Reason hereof are the Rays , which from both these Rainbows arrive at the Eye . For they which proceed from the Primary and Interior , as in a Glass Viol arrive at our Eye after two Refractions and one Reflexion . And therefore the Rays meet under the same Angle they make with the common Axis , in the same point of the Eye , from the same base of the Cone . But the more outward or Secondary Rainbow is produced because the Beams that fall upon the lowest quarter of the drops , get out from them and reach the Eye after two Refractions , and as many Reflexions ; which makes the Red , Yellow and Green Colours with all the rest , that are very conspicuous in the Primary Rainbow , to be very weak , and exhibited in an inverted posture , in the outward or secundary . Forasmuch as the Rays , which after two Refractions and one Reflexion , leave a lesser Angle of Elevation , when another Reflexion is added , will make a greater ; and on the contrary those which made a greater , for the most part , at least , will make a lesser . II. VVhy the ends of a Rainbow appear sometimes at an unequal distance . The two ends of a Rainbow appear unequally distant . This happens when the Rain is bounded on that side where the Spectator stands on a Plain so inclined to the Axis of Vision , as to make an Acute Angle towards the Left Hand , and an Obtuse one towards the Right : For then it is necessary that the Conical Figure which determins the drops that we must see coloured , do meet with them in such a manner , as that those which are on the Left , be much nearer to the Eye of the Spectator , or to the Axis of the Vision , than those which are on the Right Hand : And because these two sorts of Drops do form the two ends of the Rainbow , therefore it is that they appear at an unequal distance : And if we have a mind to fix the center of this Rainbow , in a point equally distant from both the ends of it , then must they of necessity meet without the Axis of Sight or Vision . III. VVhether ever any inverted Rainbows do appear . Some tell us , that they have seen a Rainbow , with the ends of it turned upwards towards Heaven , as the same represented in the Figure by FFF . Many suppose this to be no better than a Dream or Imagination : Yet for my part , I cannot see but that the thing may be possible enough ; that is , when the Rays of the Sun by Reflexion , light upon the surface of some Sea or Lake ; and this at a time when there is a great Calm , without the least brieze of Wind to wrinkle the Water . Especially if at the same time a Cloud , such as is represented by G , do lie over the said Water , and hinder the Light of the Sun , directly tending towards that part of Heaven where the Rain is , from suppressing or extinguishing that Light , which the water sends back thither . True it is , that such Rainbows as these are seen but very seldom : But it is not therefore presently to be rejected as an Imagination , because there are but few that ever saw such a one . It is sufficient , if ever it was seen , to make us enquire into the cause of it . IV. The Explication of an inverted Rainbow . Let us suppose therefore , that the Sun Beams , proceeding from that part of the Heaven , marked SS , fall upon the water DAE , and from thence rebound to the Rain CF , the Eye placed in B , will see the Rainbow FF , whose Center is in the point C. so as that when the Line CB. is drawn out further to A , and AS , passing through the Center of the Sun , the Angles SAD , and BAE , be equal , and the Angle CBF , of about 42 Degrees . Yet may the Eye be so placed , with respect to the Sun and Rain , as to behold only the lower part of the Circle , which makes up the whole Rainbow , without seeing the upper part ; and so may make us to take it for an inverted Rainbow , tho it be then beheld , not by those that look towards the Heaven , but by those that look towards the Earth or Water . V. VVhy the Rainbow is a sign of Rain . The Rainbow is commonly lookt upon to be a certain sign of Rain . Tho' this be commonly received by Philosophers as an undoubted truth , yet cannot it be universally admitted , forasmuch as experience shews us , that Fair Weather follows after the appearance of a Rainbow , as well as Rainy Weather . For tho' the Cloud , in which it is represented , be Dewy and big with Rain , yet may the Temper of the Air be such at that time , that all the water that is contained in it may be evaporated , and by the heat of the Sun , vanish away into the Air : Which being so , it will not seem strange to any , if no Rain should follow upon it , but Fair Weather . Whence it is Evident , that it is not generally true what Aristotle asserts , that a Rainbow that begins presently after Noon , doth always bring copious Showers ; but that which appears about Sun-set , doth only threaten some small sprinklings , rather than any great Rain . Seeing that these signs do often fail , and that Rainbows appearing in the Afternoon , are sometimes followed by Fair VVeather ; and on the contrary , those that are seen about Sun-set are accompanied with great Showers . And therefore I am more inclined to be of Pliny's opinion in this case , who saith , that frequent Rainbows do not with any certainty portend either Rain or Fair VVeather . VI. VVhat is the Reason why sometimes three Rainbows have been seen at one time . Sometimes three Rainbows have been seen at a time , so as that the third supervening , hath encompast the two common ones , but withall hath appeared paler , and less strong and refulgent than the other , and at the same distance from the 2 d. as the 2 d. was from the 1 st . The appearance of this 3 d. Rainbow , is caused by the Hail that is mingled with the Dewy or Rainy Cloud . For seeing that the Hailstones are round and transparent , and that a greater Refraction is produced in them , than there is in the Air , the outward Rainbow must needs be much greater , and so appear above , and surrounding the other . And the inmost , which for the same reason must have been much less than the middlemost of Rain , may by reason of the great Brightness of the former , have altogether lost its appearance , so as that both of them may have been taken for one ; but yet for such a one , the Colours whereof were otherwise placed than in the Ordinary or Common Rainbow . Wherefore the 3 d. Rainbow agrees with the Primary , because it is formed by Rays falling on the upper part of the Drops , and therefore do both of them represent their Colours in the same order , save only that in the 2 d. the Colour does by degrees grow weaker than in the 1 st . and in the 3 d. than in the 2 d. VII . VV● the Rainbow affords a Sweet Odor . The Ancients have observed , that a sweet Odor is perceived in all places whither the Rainbow inclines , or which it hovers over . The Reason is , because the soft and pleasant Dew of the Rainbow is proper to draw forth the perfume of Odorous Bodies . For we find that moderate Showers have the same effect , tho' not in so high a degree ; for nothing affords to the Ground , or fills the whole Air with a sweeter fragrancy , than the Dewy Rain of the Rainbow , wheresoever it falls . So that for ought we know , there may be a fragrancy in the water it self that composeth the Dewy Cloud ; seeing that a Rainbow is nothing else than drops of water clustered together , which cannot come down in Rain , but from that part of the Air which is near the Earth , and therefore more proper to imbibe and retain the fragrancy of the Herbs and Flowers , like a distilled water . For Rain or any other Dew that falls from a great height cannot retain the sweetness which was dissipated whilst the Exhalation was mounting so high . And therefore PLINY observes , lib. 12. cap. 24. That whatsoever Plant the Rainbow hangs over , it doth impart to the same a sweetness like to that of the Rose of Jerusalem ; but to that Plant a most inexpressible fragrancy . VIII . The Rainbow doth not appear the same to all . The Rainbow appears not the same to all , but every one sees his particular Bow : So that as many Bows are represented in the Dewy Cloud , as there be Eyes directed towards it . The Reason of this multiplicity is manifest ; because the Rays which come to the Eyes of one person , do not reach the Eyes of another . For tho' every drop do reflect one of the Suns Beams , yet the whole Cloud only sets forth the coloured representation of the Rainbow , whilst it is so posited , that it makes its Reflexion at a certain Angle : Wherefore as any approacheth nearer to the Rainbow , or withdraws further from it , he doth not see the self same Bow , but still a different one , according as the said Angle encreaseth by his approach to , or decreaseth by his withdrawing from it . IX . The Moon sometimes forms a Rainbow . The Moon sometimes affords the appearance of a Rainbow , which ARISTOTLE tells us , happens only one day of the Month , viz. that of the Full Moon . It cannot be questioned , but that the Lunar Beams may fall upon a Cloud , and exert its action in such a manner upon every one of the drops of it , as that by reflexion to our Eye , they may represent a Rainbow , which is weaker indeed than that which is formed by the Sun , nor deckt with so great a variety of Colours . BOMBACHIUS assures us that he saw such a one at Oxford in the Month of June 1606. But whereas ARISTOTLE tells us , that it is only to be seen at a certain time , that I suppose to be without ground of Truth , since there are Authors who assure us that they have seen the same twice in the space of two years , and that on several days , and that not at the Full Moon , but at the Quarters . And SCALIGER in his 8 th . Exercitation , speaks of it as a common thing in the Isle of St. Thomas ; where he saith , If Rain hath preceeded , there is always a Rainbow formed by the Moon , the Colour whereof represents , as it were , a whitish Mist . I my self once beheld a coloured Lunar Rainbow in England , near Hampton Court , about the middle of October , when the Moon was at her Quarter ; and had Sir Charles Waldegrave for a witness of this unusual sight , and who was not a little surprized to see such a one in the Night . For it appeared so plain , and with such distinct Colours , that it was very like a Solar Rainbow , save only that the representation of it was not so strong and refulgent . X. How Circles come to be formed about Candles . It happens sometimes that we see circles of the colour of the Rainbow about Lamps and Candles . Such as are in the Figure represented by the Letters AB , CD , more especially after that any one hath for some time kept one of his Eyes shut . Figure 26. There are some who attribute this effect to the Air that compasseth the Candle , which by its thickness reflects the Rays , and transverts them . But that this is a mistake , is most evident from hence , because this Circle is not seen by all , which must be in case it were an effect of the thickness of the Air. We shall therefore easily apprehend the manner of the forming of it , by discovering the cause of the Transverse or Cross Rays , which sometimes appear there . Which I say may then happen , when there are one or two little wrinckles in any one of the surfaces of the Coats or Membrans of the Eye EMP , which because of the Figure of the Eye FO , SMN , wee 'l suppose to be circular , and have their Center in the Line EO ; as frequently there be there others also extended according to the Right Lines , which discussate or intersect one another in this Line EO , and make us see some great Rays scattered this way and that way , about the burning Candles ; and this notwithstanding , any Opake Body might intervene , either betwixt E and P , or elsewhere on the side , as long as it doth but circularly diffuse it self . Or lastly , The same may happen , because the Humours or Membrans of the Eye have in some sort or other changed their Temperament or Figure . For it is very common with those who have sore or weak Eyes , to see these Circles , neither do they appear to all persons alike . XI . VVhy the outward Rims of these Circles are commonly Red. Particularly we are here to take notice , that their outward Rims , represented by A and C , are for the most part Red , quite contrary to those which we sometimes see represented about the Stars . The reason whereof will evidently appear if we consider that in the production of those Colours whereof they consist , the Crystallin Humour PNM , performs the office of a Prisme , and the Retina FGF , the part of the Linnen-cloath that receives the Beams passing through the Prisme . But some may question , forasmuch as the Crystalline Humour is able to perform this , why it doth not do as much to all other Objects , by representing the colours of the Rainbow about them ? Wherefore we must take notice , that many Rays , from every single point of the Objects , do arrive at the several points of the Retina ; and because some of them pass through the part N , of the Crystalline Humour , and other of them through the part S , therefore also they act in a contrary manner upon them , and destroy one another , at least as to the production of Colours : But that here all those which come to the part of the Retina FGF , do only pass through the part N , of the Crystalline Humour , and therefore that the Rotation which they acquire there may be felt . All which perfectly agree with those things which we have delivered in our Institutions of Philosophy concerning Colours . CHAP. X. Of Fires kindled in the Air. I. Why those Meteors called Wills with the Wisp , do lead men towards Pools and Rivers . WILLS with the Wisp or Wandring Lights , do frequently lead persons to Lakes and Boggy Places ; and make them fall into Precipices , or lose their way . This effect may be explained from what we have said before concerning Winds . For seeing that more Vapours are raised in the Night from the Earth , than from the Water , this is the cause why these Wandring Lights or Fires , that follow the motion of the Air , do take their course towards Waters and Pools , because thereabouts the Air is more cool , by reason of a lesser agitation , and consequently becomes thicker and more condensate , than that which lies close upon the Earth ; so that these Wandring Fires , being in a manner born up by the Wings of the Air , and complying with the motion of the same , are carried thither from the neighbouring grounds . II. Why these wandring Fires follow those that flee from them , and flee from those that follow them Nothing is more commonly asserted by Philosophers , than that Wills with the Wisp do flee from those that pursue them , and follow those that flee from them . And this they prove from many Examples , as may be seen in FROMUNDUS . The cause of this is imputed to the Air , which being light and fluid , and shaken by the agitation of the person that walks along , doth either drive them forwards , or drags them along after him , when he runs from them . For if this Meteor stand before him that walks , by his driving the Air before him , it is driven forwards , and so flees from him that follows it : But if it be behind him that walks , forasmuch as the following Air accompanies him , it also follows him fleeing from it . III. Why these Fires are much seen about Church-yards and Common-sewers . Wills with the Wisp are commonly seen about Churchyards , Common-sewers , Fire-vomiting Mountains , and other places where great slaughter of Men or Beasts have been made . The Reason is , because these Wandring Fires consist of fat and viscous steams , which having no such quantity of subtil particles mixed with them , by means whereof they might be carried upwards , do fluctuate in the lower part of the Air , and are forced , because of the cleaving tenacity of their parts , and the Earthly Matter that is mixed with them , to tend downwards by their weight , rather than mount upwards ; and move especially about Church-yards , Laystalls and such like places , as abounding with a greater quantity of Fat and Oily Particles . IV. What is the cause of those Flames that sometimes appear about , or upon the Hair ●f Childr●n . We read in the Writings of the Ancients , of Fires or Flames that have been seen hanging upon the Hair of Children , and that without hurting or scorching their Hair. According as VIRGIL tells us , that this hapned to Ascanius the Son of Aeneas , Lib. 2. Aeneidos . Lo from Julus Crown a flaming Light Was seen to rise , and harmless Fire did spread , With a soft touch , and round his Temples fed . The cause of these flames is , when a subtil and penetrating Exhalation ( such as participates of the nature of Salt ) doth enter the Pores of another that is Fat and Sulphureous . This being of it self sufficient to kindle some thin and subtil flames , as well on high , as in the lower parts of the Air. For certain it is , that not only a violent agitation , but the mixture only of different Bodies , is sufficient to produce Fire . As we see in Quick-lime that is sprinkled with Water ; and innumerable other Examples which daily occur to Chymists . V. Th●se Flames may also proceed from a Commotion of the Spirits . These Lambent Flames may also be caused from a commotion of the Spirits , that rush out from the Body , and being intangled together , represent the appearance of Fire : Thus Historians tell us , that ALEXANDER the Great , in the heat of Battle , darted sparks from his Body ; and that something like this hapned to the fierce Horse of the Emperour TIBERIUS , from whose Head a flame was seen to break forth . For Alexander being of a fiery complexion , and addicted to the drinking of Wine , it cannot seem strange that he sent through his Pores such Spirits as were proper to kindle flames : No more than that from TIBERIUS his Horse , when he had heated himself with running , a fat and viscous sweat did break forth , which kindled into a flame , but such a one as was harmless , and without any burning or scorching quality . In like manner as the flame of Spirit of Wine , which hath some aqueous particles mixt with it , doth not burn the Linnen Cloth that is moistned with them . VI. Why s●arks of Fire proceed from a Cats Back when rub'd . And it is for the same reason , that when we rub a Cats back contrary to the hair , especially in the Winter , sparks of fire dart forth from it , because Cats in the Winter are fatter than in the Summer , and therefore are able to furnish a greater quantity of a fat clammy humour , proper for the exciting of these Sparks . But because in the Summer these steams do more easily break forth into the Air , and are disperst there , it cannot seem strange , that when the proper matter for the generating of these Sparks fail , they should cease also , and not then appear upon the rubbing of the Cats back . VII . What Falling Stars are . In clear Nights , Stars seem to shoot or fall from the Sky . The cause is , when after a very hot and dry season , the space which is between two Clouds , is filled with copious Exhalations , that are very subtil , and proper to take fire : For if these be so light and loose of Texture , that one of them falling from on high , doth not produce any noise of Thunder , nor cause any Tempest in the Air , yet the Exhalations lying between the said Clouds , may be so twisted together , as to exhibit the appearance of some lesser flames , which are commonly called falling or shooting Stars . Because by inflammation the combustible particles , which were the cause of their ascent , were thereby consumed and vanish ; and therefore the Star , which at the beginning of its deflagration , complied with the motion of the Air that carried it , was called a running or shooting Star ; afterwards , when it s more subtil parts were burnt away , falls down , because the weight of the Earthy and viscous matter , doth exceed the heaviness of the Air that lies under it ; and then is called a falling Star. And therefore these Meteors receive a different denomination from the various specification of the kindled Exhalation . For if an Exhalation that lies at length , becomes kindled , it is called a Beam if at the bottom it be somewhat broader , 't is called a Pyramid ; if it be broad about the midst , and small at both ends , 't is called a flying Dragon , &c. VIII . Why those Fires which are formed ●●ar the Earth do continue for some time , whereas those that are produced high in the Air are of no long continuance Fires generated near the Earth , continue for some time ; whereas those formed in the uppermost part of the Air do presently vanish . The Reason is , because a flame doth cleave more strongly or weakly to any matter , according as the said matter is more or less close and compact . Now forasmuch as these Meteors which are formed in the upper Region of the Air , do consist of a very loose and thin matter , it is plain that their flame cannot continue long . For indeed if this matter were thick and close , it would by its own weight sink towards the Earth , and leave its former station . And therefore ARISTOTLE in the first Book of his Meteors , supposeth them to be like that flame , which runs along the smoak or steam of a newly put out Candle , which is apt to be kindled again by another that stands near it . IX . What is the cause of the Appearance of Armies in the Skies In the Sky is sometimes represented the appearance of Armies , and Soldiers sighting . Such a Representation as this is reported to have been seen in Silesia in 1545. A Bear appeared in the East at the head of an Army , and was met by a Lion , who led an Army from the West : Between both these Armies there appeared also a most bright Star ; and presently after they engaged , so that the blood seemed to drop from the Bodies o● those who were wounded , and many as it were fell down dead . As these Armies were fighting , an Eagle coming from an high Rock , hovered over the Lions Army . And after the Battle was ended , the Lion shone bright in the midst of his Forces ; but there was no appearance of the Bear. The place where both the Armies stood was all covered with dead bodies , and by them some old Men , venerable for their Gray Hairs . Afterwards the Lion led off his Army towards the West ; who after he was got some way from the place of the Battle , a person ●iding upon a white Horse , adorn'd with Trappings , returned from the Army to the place where the Battle was fought , and set a young Man armed Cap-a-pee upon that Horse , and having accompanied him some part of the way towards the East , vanished together with all the other Apparitions . X. The Common-People very apt to believe such Stories as these . I am very well aware how greedily such storie● as these are embraced by the common People , and how ready they are to lay hold of any thing , which they imagin may discover to them the knowledge of future Events . And therefore if they do but see two Clouds standing over against one another , and enterchanging some Refractions or Reflexions , this is sufficient for them to appehend two Armies fighting , that the more bright portions of them are Soldiers in whole and bright Armour , that they hear the clashing of Arms , discharging of Musquets , &c. I my self once in a clear night in Flanders saw some Vapours scatter'd in the Air , in an unusual manner , and giving some light from them , which did so terrifie the Inhabitants , that the next day all the news was that they had seen Armies in the Air , heard the ratling of Pikes , the discharging of Musquets , the clashing of Swords and the sound of Trumpets . XI . What may be the cause of an Army appearing in the Air. But because it may happen that such appearances as these may really be seen in the Air , I w●ll here add two probable causes whence the same may proceed . The First is , That there may be in the Air various Clouds of that smallness , as that every one may exhibit the appearance of a Soldier , and rushing one upon another , may contain a sufficient quantity of Exhalations , to produce some small flashes of Lightning , and cause some sounds or noises ; and so represent the fighting of Souldiers . The other is , when all these small Clouds do shine , and reverberate that light which the Lightning of some great Tempest hapning at so great a distance , as that they cannot be perceived there from the Earth , do reflect upon them . CHAP. XI . Of Circles about the Sun , or Moon , and of Mock Suns . I. Why no Circles appear about the Sun or Moon but in fair weather . CIrcles about the Sun or Moon , never appear but in fair weather , and in this are distinguished from the Rainbow , which seldom appears but in rainy weather , tho' perhaps it may not rain in that place where the Spectator is . The Reason of this difference is , the variety of their composition . Because these Circles are not formed by the Refraction of Rays from drops of water , as the Rainbow is generated , but by that Refraction which proceeds from the little Stars or Spires of transparent Ice ; and tho' these Stars do never fall from the Sky but in cold weather , and the frosty Months of the Year ; yet reason convinceth us , that they are produced at any other time also : Yea , and forasmuch as they stand in need of warmth , which of white as they are at first , may make them transparent , it seems very probable that the Summer time may be the most proper for the forming of them . II. What is the cause of double Circles . Sometimes double Circles have been seen in the Sky , so placed as that one of them did seem to encompass the other , and to appear concentrical with it . This is caused when two Ranks of such particles of Ice are placed together , so as not to exclude the Rays of the Sun : For then those Rays which pass through both these Ranks at the end of these little Stars , being almost bent as much again as those others that pass through one Rank only , will produce another coloured Circle , much greater in compass than the former , but less bright . So as to make two Circles appear , whereof the one doth encompass the other , the more outward whereof is of less lively colours than the inward . III. Why these Circles are never seen about the Sun or Moon at their Rising or Setting . Circles are not usually seen about the Sun or Moon , whilst they are near to the Horizon , that is , when they do either rise or set . The Reason is , because then the rays of these Luminaries do fall so obliquely upon the particles of Ice , that by reason thereof they cannot penetrate them : And consequ●ntly there can be none of those Refactions which ●re the formers of these Circles . IV. VVhat is the cause of many Suns appearing in one Circle . Many Mock Suns sometimes appear in the same Circle . Thus it is recorded , that in the year 1625. the King of Poland saw no less than six of them ; and five appeared to the People of Rome in the year 1629. and that for four hours together . These Parhelia or Mock Suns are formed in a Cloud , consisting of a continuous piece of Ice , the surface whereof being very even and smooth , is illustra●ed by the S●n ●levated towards its Meridian Height , and re●●e●ts the rays it hath receiv'd against the Snow of the Cloud that do●h compass it . For then the Snow appears to those who behold it from the Earth , like a great white Circle , wherein one Circle is seen by means of the rays which flow from the Sun direct●y ; and the two following from their refraction , ●nd the rest by the reflexion of them . V. How it comes to pass that some see more Suns in the same Circle than others . Many Suns appearing in the Heavens , are not seen alike by all ; for some Spectators see more Suns in one and the same Circle , others less . The Reason is , because the rays that proceed from these Suns , are not after the same manner conveyed to every Spectator ; forasmuch as some may be so placed , as to see no more than two of them ; and others again so as that they can see three , four or more of them , according as the place is from whence they direct their Eyes towards them . For the rays do not affect the Eyes of all Spectators alike ; neither do those which fall upon the Eyes of one Spectator , reach those of another : Seeing it is certain , that he who moves from one place to another , doth set still other and other Stars ; and as upon shifting places , we see other Circles about the Sun or Moon , so likewise different Mock Suns . Moreover , seeing it is certain , that either the Earth or Sun must move , it cannot be but that when the Sun shifts its station , or when the Spectator is whirl'd about together with the Earth , the Angle of Sight must needs be changed , and those Stars which he saw before , will have lost the Latitude under which they appeared to him at first . Whence it is that every Spectator sees such and such Mock Suns , according to the difference of the place , where he is at this or other times . VI. VVhy Mock Suns have commonly long Tails . Mock Suns commonly have a long Tail , of a very bright and refulgent white Colour . The cause is , either the reflexions which are made on the surfaces of the little Icy Bodies which are turned towards the Sun ; or those contrary refractions which the rays suffer in passing through them : Or , it may be , from both these causes together ; as seems to be confirmed by Experience in those small drops of Rain which are about a great Cloud , that hides the Sun from us : For we see that these little drops of Rain , or particles of Snow half melted , receive a bright whiteness , not only by the rays reflected from their surface , but also from those which by penetrating them , do suffer contrary refractions , that is to say , which destry one another . VII . VVhat is the cause of the Suns being sometimes seen at night . Historians assure us , that the Sun hath been sometimes seen at Night , and appeared above our Horizon , when yet it was certainly far under it . The Reason of this strange appearance was this , because there were Clouds made up of little Icy Stars , placed in so high a Region of the Air , as that the rays of the Sun , then below the Horizon , could reach them . For if we do well consider those reflexions and refractions which two or three little Clouds , situate in divers place , and receiving lig●● one from another , can produce , we shall easily apprehend how they may in the night-time exhibit a very strange and unwonted light , and cause , as it were , the Sun to appear above our Horizon , at that time when it is indeed under it ; and the shadows on our Sundials to be nearer or farther off than they ought to be , and consequently point at another hour than it is indeed . VIII . VVhether Mock Suns be the foreboding signs of great Calamities . It is observed that the appearance of Mock Suns have been the fore-running signs of the revolution of Kingdoms , the deat● and mur●er of Princes . Hence it is that almos● all Meteorologists assert , that those six Mock Suns which were seen by the King of Poland , did prognosticate the taking of Francis I. of France at the Battle of Pavia : And that those Mock Suns which appeared in the year 1157. did foretell the great dissention that hapned soon after amongst the Electors , in their choosing of a King of the Romans . It cannot be denied but that after the appearance of Mock Suns , some strange and uncommon effects do frequently happen : But who will say that they proceeded from this Meteor , and not rather by meer accident , and without any the least reference to the same ? Or shall we say that there is such a close Union and near Relation between the Heavenly Bodies , and the Affairs of Mankind , that when ever such and such Meteors appear , such effects must follow in the other ? Sure it is that Mock Suns would appear , tho' no such effects were to follow ; and strange things would happen in the World , tho' no signs in Heaven should usher them in . Or shall we suppose , that Nature will surcease its activity , and natural causes not unite in order to the producing of their effcts ; except Kings wage War , People dispatch their Princes , and overturnings , devastations and slaughtens happen to Governments ? How many Kings leave this world , how many Countries are wasted , when yet no Mock Suns have appeared to give any warning of these Accidents ? If therefore after the appearing of Mock Suns any great Slaughters or Revolutions chance to happen , this cannot seem strange , if we consider the Temper of Men , who are never content with their own condition , but are alway● reaching after that which is anothers . Besides , why should Mock Suns portend such events any more than many other natural Phanomena ? And is it not meerly accidental , that they appear this time rather than another ? What an unaccountable Pride and Vanity is it in Man , to imagin himself to be of that value and consideration , that for his sake Prodigies must be formed in Heaven , that Comets must appear when ever the humour takes him to wage War ; and that Suns must be multiplied , when the great Men of the Earth are at variance together , or some other Emblems must be represented in the Air , when ever they are Sick , or drawing near to their last end ! Pray let us never have so high an opinion and conceit of our selves , as to imagine that all these appearances are formed in the Heavens on purpose to warn us of future events . But let us rather consider that all these are natural effects , which cannot but be formed and appear when ever their causes do concur and meet together . That their appearing but very seldom , cannot in the least conduce to their efficacy , or to render them more considerable : For their Rarity or In●requence doth no more prove them to be Prodigies , than it is an argument that a Lion is a miracle in Nature , because we very seldom see any , or for that they are not so common as other Beasts that are frequent amongst us . The Seventh Part OF THE HISTORY OF NATURE . OF PLANTS . CHAP. I. Of the Parts of Plants . I. VVhy every Plant hath a Ro●t . EVERY Plant hath a Root , neither is there any supposed to want this necessary part , except only the Indian Plant called Malabathrum , whose Leaves grow spreading upon the Water as if they had not any Root at all . The nec●ssity of this part is obvious from the nature of Plants , to the conservation whereof it is absolutely necessary , that some part of it cleave and stick fast in the Earth . For a Plant with its Root , as with a hand or claw lays hold on the Earth , and by its spreading Fibres takes possession of a part of it . To this may be added that Vegetables make use of their Roots fo● a Mouth , wherewith they suck in their Nourishment out of the Earth . For seeing that the life of Vegetables consists in perpetual motion , their inward moist●re would be soon consumed , except a new supply were continually conveyed to them from the Root . Neither indeed , if the matter be narrowly examined , will the Indian Leaf called Malabathrum , nor the Herb common amongst us , called Duck-weed be found altogether without Roots , whats●ever Antient Writers may have left recorded concerning them : For when we do more narrowly behold these Plants , we shall find them to have a small stalk which reaches to the bottom of the place whence they are taken . And therefore when we dissect a Root , we find parts in it that are as substantially the same with the little Root of the Seed , as the Members of a Man are the same with the Organs of a Birth in the Womb. So that the Root of a Plant seems to be nothing else but a spreading of the Stalk or Stem into several little Branches and Capillaments . Neither doth it contradict what we have here asserted , that Misselto Dodder of Thyme , and others of the same nature , have no Roots that stick in the ground ; for tho' they have none , yet the Plants on which they grow , and to which they are fastned , have theirs fixed in the Earth . II. VVhy straight timber'd Trees are not so lasting as others . Hence it was that DEMOCRITUS was of opinion , that straight Trees were shorter liv'd than crooked ones , forasmuch as their Roots were weaker , and for that the straightness of their Passages or Vessels were not so proper to retain their Aliment . Tho' we find the contrary in the Palm , Fir and Cypress Trees , which tho' they be very straight , yet are long lasting , and that because of their thick and long Roots by which they suck in their Aliment . Book . 2. Part. ● Chap G. Freman . Inv I. Kip To George London of their Majes●ies Royall Garden in St. James-Parke Gent ▪ Deputy Superintendant and Master Gardiner ' of their Majesties-Gardens and Plantations in England . This Plate is humbly Dedicated by Richard Blome The Roots of some Plants grow more thin and slender , as they enter deeper into the ground , and end in a Cone or slender Point , as the Roots of Trees . But the Roots of other Vegetables swell into a round Root , as Turneps , Tulips , Onions , &c. The Reason why the Roots of Trees , and most other Vegetables are slender towards the ends , is because the Juice passing through them , is carried upwards , and abides longer in the upper part of the Plants ; for tho' the heat , by the virtue whereof Nutrition is performed , doth extend it self into all parts , and be carried upwards and downwards , yet it is certain , that it is always more strongly conveyed to the upper parts , than towards the lower ; and therefore seeing that the upper part of Trees doth receive more nourishment , and is longer nourished , it is no wonder if be also bigger and larger , and that the Roots end in a point . But the Roots of Turneps , &c. are Round , because their nourishment is received into the first joint of them , which consisting of several entangled parts , and being endued with narrow pores , the nourishment cannot freely pass or be strained through them , and therefore it is necessary that the said matter be diffused sideways , and that the Fibres which are big and swell'd with juice , spread and enlarge themselves . IV. The Compression of the Earth makes the Roots to grow the faster . If an Herb be cut up by the Roots , and put again into the Earth , and the same be strongly beaten down , and this about the beginning of Winter , the Roots will be found extreamly encreased the following Summer . The Reason is , because moisture having by this means been hindred from entring into the inward parts of the Plant , doth the longer continue in the Root , and dilate the same . And therefore it is common with Gardners after they have sowed Onions and Turneps , to press down the loose Earth round about them with Rowlers or the like . V. Why the Stalks of some Herbs are hollow ▪ Some Plants have hollow Stalks , as all sorts of Reeds , and the Straw of Corn , but with joints . The Reason is , because the Fibres which serve to convey the nourishment , are not derived from the Pith of the Plant , but from the sides of the budding Knot ; which because they withdraw from the middle , and observe a certain distance , do leave a certain space there , and produce a Cavity . Hence it is that in Onions the Pipe is larger about the midst , because the ends of the Fibres spread further from one another , and affect a spherical Figure . For the several Coats of Onions are like so many Leaves , which being broader about the midst , are roll'd together like the surface of a Cylinder . VI. Why the Bodies of Trees are round . Almost all the Bodies or Trunks of Trees have the same Figure , viz. a round one , tho' they differ in length , and other manifold varieties . The Reason of the roundness of the Trunks of Trees , is the same with that of the Roundness of the drops of Liquid Bodies . For as the Coelestial Globuli , by their equal pressing of the parts of water towards their Center , do make them spherical ; so the same Globuli , by dashing against the outside of Trees , drive the same to a Roundness . And tho' Plants be much inferiour in softness to Water , and therefore cannot be so readily figured by the surrounding subtil matter ; yet this doth not hinder but that the same which is done , as it were in a moment , in the parts of Liquid Bodies , may be done in a larger time , and with often reiterated attempts in harder Bodies . So we see that Iron Work which was rough before , becomes smooth'd and polish'd by frequent handling , or even rubbing against ones Cloaths . VII . What is the reason of the hardness of the Barks of Trees . The outward part of the Tree , and which covers it like a Shift , is wont to be harder than its inward Substance . Hence it is that most Trees shed their Bark in the Spring . The hardness of the outside of Trees proceeds from other Bodies that dash against it . For there are innumerable little Bodies , not only of the 1 st and 2 d Element , but also particles of the 3 d Element , which continually push and dash against the surface thereof , and drive all the parts towards the midst . Thus our Hands and Feet by the impulse of other Bodies , do contract a brawny hardness ; likewise so the Crust of Bread , and the surface of Roastmeat , grows hard by the heat of the Fire acting upon it , and much compacter than the inward substance . The reason why Trees in the Spring do lose their Barks , is , because the copious affluence of the alimental moisture , being at that time in greater abundance betwixt the Trunk and the Bark , doth loosen the Glew wherewith they were fastned together . VIII . The Aliment of Trees is not only transmitted through the Pith , nor only between the Bark and the Wood. But for all this , we are not to suppose with some , that all the nourishment of Trees is conveyed betwixt the Bark and the Wood ; or , which is the opinion of others , through the Pith only , but rather both ways ; tho' indeed nothing hinders but there may be a mutual communication or irroration of both these ways with each other . Forasmuch as we see there are some Trees which live and grow , when their Pith is quite consumed , as Wallnut , Willow , &c. as on the other hand there be Trees which grow after that their Barks are taken from them . IX . What is the cause of the great variety of the Leaves of Plants . Almost all the Leaves of Plants differ , and are of different Figures . For some are large and broad , as those of a Gourd ; others small and slender like Hair , as the Pine Tree ; and some thick and fleshy , as in Purslain , &c. The conformation of the Leaves is caused by the different texture of the Fibres , which as they do diversly meet together , and become entangled , or else separate from one another , so they form Leaves of different shape and figure . For tho' the Leaves of all Plants consist of the same parts as their Branches and Trunk doth ( because the thin Skin of the Leaf is nothing else but the enlargement of the thin Skin of the Branch , which partly by the occasion of new parts , and partly by the extension of its former parts becomes spread into that breadth ) yet do they receive their figure from the various disposition of the Fibres . Hence it is that some Leaves are long because their Fibres lie only stretched out in length , others round , when the Fibres display themselves more winding and turning , and so for the rest . For seeing that most of them derive their original not from the Bark alone , but from the inward substance , so it is that Alimentary Juice is differently suck'd and strain'd , according to the disposition of the Navel Knot of the Tree , whence the diversity of the Fibres , and of the figure of the Leaves doth arise . X. Of the different Leaves of Plants . Hence it is that some Plants have long and slender Leaves , as the Willow ; others bent and crooked , like Orris ; others round and hollow , like Navelwart ; some like a Sithe , as Moonwort . So likewise the surface of some Leaves is smooth and shining , as those of the Ivy ; others hairy or downy , as the Malabathrum ; fome curled , as in some sorts of Cabbage ; in some rough , as those of the Fig Tree ; in some stinging and prickly , as the Nettle and Thistle ; and in some the Leaf is nothing else but prickle , as the Juniper Tree . XI . What is the reason of the variety of Leaves that is seen in the same Tree . Neither do the Leaves only of different Trees vary from each other , but even those of the same Tree ; so as it will be hard to find two Leaves on the same Tree that are exactly alike . Who would not think that the Leaves of Olive Trees , above all others , were most exactly like one another ? And yet you 'll find that all of them differ . And the reason is plain , for tho' the Principles whereof they are formed do perfectly agree together , yet for all this similitude there may be a very great difference between them in relation to the magnitude , number or figure of their parts , and in many other Circumstances . XII . Why some Trees keep their leaves all the Winter . So likewise it proceeds from the same cause , that some Trees shed their Leaves in Winter , because when the Pores of the Bark are drawn together by cold , the Alimentary Juice can no longer pass through them . But in those Trees whose Leaves proceed from the Inner Bark or Rind , they are not so apt to fall off , by reason of Cold , but only by the en●rease of the Shoot that proceeds from the Bud or Knob , which takes possession of the Leaves place , and so causeth it to drop off . Hence it is that in Brazile and Aegypt , the Trees are ever Green , nor ever lose their Leaves . XIII . What is the cause of that liquor which in Spring time doth in great abundance proceed from some Trees . There is a certain Liquor or clear Juice , which in the Spring doth in so great abundance mount upwards into the Trees , that it is tapt in great quantity from them , without any prejudice to the Trees , as the Birch . The cause why this Liquor , at the beginning of the Spring , mounts up through those wooden Pipes , called Spiral , is because the Lymphaeducts or Vessels of the Bark , through which it is conveyed all the Summer , begin but then first to be formed : Wherefore seeing it finds no passage this way , it takes its course through the Aiery Vessels . But as soon as the foresaid Lymphaeducts have attained their due consistence and extension , then the Juice returns out of this by-way into the great road , and quitting the Air or Wind pipes , betakes it self to these as its proper Receptacle . XIV . Why Leaves and Fruits , when they have attained their maturity , appear of a Yellow Colour . Leaves and Fruits , when they are come to their full maturity , are of a Yellow Colour . The Reason is , because that after the Juice hath been well strained and concocted in them , their particles become like to those that compose Gold , which are so rough , that they produce such a Reverberation of the Light , wherein the Globuli are less whirl'd round , than they are when they exhibit the appearance of a Red Colour , and more altered than those that represent a White Colour ; which is the reason why their superficies is Yellow . This may be further confirmed by looking upon them through a Microscope , for then their surface appears distinguisht with many rising little Pellets or round Bodies , which leaving great Intervals betwixt them , do cause a great variety in the Reflection of the Light. CHAP. II. Of the Virtues and Efficacy of Plants . I. Some Vegetables are endued with a warming , and others with a cooling virtue . SOME Vegetables have a Warming Virtue , and a power to dilate Bodies , as Coleworts or Cabbage , Capers , Cinamon , Radish , Onions , Rocket , &c. others have a power of Cooling Bodies , and drawing them together , as Barly , Cowcumber , Purslan , &c. The warming virtue that is in Plants consists in this , that their thinnest particles surrounded with the subtil matter , do enter the Pores of the Bodies , and do so penetrate them , and agitate their parts , as to dissolve their texture , and interrupt their continuity . And therefore from this hindered course of the subtil matter , a kind of contest or variance ariseth , and consequently a greater heat , and agitation of the Parts . As may be seen in the mixture of Spirit of Vitriol and Oil of Tartar , which produceth an Ebullition or effervescence , because the accustomed motions of them both are disturbed , and one of them exerts its force upon the other . Again there are other Vegetables which produce Cold , whose insensible particles are of such a make , that they are able to hinder , or lessen the agitation of the parts of our Body . Thus Purslan and Barley are said to be Cold , because their particles are not easily discust by the subtil matter , and because they either altogether stop , or allay the motion of the Vital Spirits . And consequently we may conclude , that the greater particles of the subtil matter are predominant in warm Bodies , but the lesser and weaker in cold ones , because these are less agitated , and more easily reduced to Rest . II. The difference or several degrees of coldness in Plants . Amongst Vegetables , some are cold in the 1 st , others in the 2 d , others in the 3 d , and others again in the 4 th Degree . Coldness in the 1 st belongs to Roses , Violets , Mallows , Barley , Prunes , &c. In the 2 d to Sorrel , Lettice , Plantan , Gourds , Oranges , &c. In the 3 d to Opium , Poppy , Purslan , &c. In the 4 th to Meconium or the juice of the Heads of Poppy and Hemlock , which latter by its extream coldness extinguisheth Life , by stopping the circulation of the Blood. III. Why some Vegetables provoke Lust . Beans , Asparagus , the Roots Satyrion , Parsnips , Rice and such like , do provoke Lust , and encrease Seed . For Seed consists of Blood that hath been very well concocted and strained , and the fore-mentioned Vegetables have the power of agitating , loosening , and so disposing the Organs ▪ appointed for the generation thereof ; that as soon as the Blood comes to those parts , it is readily strained through them , and by this means the quantity of Seed is encreased . Amongst these Earth-nuts or Pig-nuts may also be ckon'd , as producing the same effect . But on the contrary , Lettice , Anice , Hemlock , Purslan and the Seed of Rue diminish Seed , because they , with their particles do obstruct the Pores of those wonderful Strainers ; and besides , by thickning the Blood , make it less fit to be strained . IV. How Purslan restores our Teeth when set on Edge . Purslan cures the Teeth when set on Edge , and restores the Gums to their natural disposition , when by the eating of any sour or harsh things , they are drawn together . The Reason is , because this Numbness of the Teeth proceeds from the particles of sour Bodies , which penetrating through the Gums , draw together the Jaw-bone , and consequently the Teeth themselves . And forasmuch as Parslan aboundeth with Clammy Juice , which as soon as it comes into the pores of the Gums , the foresaid sour and sharp particles stick to them , and are carried off by the Spittle . Salt is also said to produce the same effect ; for when we rub our Teeth with it , it opens the pores of the Gums , whence the Spittle flowing in great abundance , carries those sharp Bodies along with it . Thus the Root of Pellitory of Spain , is often with good success held in the Mouth by those who are troubled with the Tooth-ach , because it draws the humours powerfully into the Mouth together with our Spittle . For it causeth a kind of Salivation , being held in the Mouth only , which may it be it would do both for a longer time , and more copiously , in case it were taken inwardly in a small , but often repeated Dose . V. How some Vegetables make Bodies hard , and others make them soft and flexible . Some Vegetables make Bodies hard and solid ; whereas others make them soft and flexible . Bodies grow hard by the mixture of some Herbs , when the particles whereof they consist , having before been agitated by heat , and separated from one another , are seized by the Juice of these Vegetables ; which entring their Pores , and putting a stop to their Agitation , makes them to come nearer to one another ; for by the operating of their thinner particles , the remaining become so much the closer united together . And on the other hand hard Bodies become flexible , when their particles being separated by heat , a forrein moisture getting between them , keeps them at a distance , and by its interposition makes them flexible . For the softness or pliableness of any Body consists in this , that its parts are divided from one another , and have something running between them . Amongst those Vegetables that are endued with a consolidating virtue Thorough Wax is one . VI. Wherein the Diuretick Virtue of Vegetables doth consist . Some Herbs are endued with a Diuretick Virtue , as the Roots of Fennel , Saxifrax , Smallage , Juniper Berries , Nettles , Bitter Almonds , and the like , which provoke Urin. This faculty in these Plants proceeds chiefly from their heat , because their particles are easily agitated by the subtil matter . For seeing that obstructions are the cause of the retention of Urin , these are endued with a penetrative power , and consequently are proper to remove those obstructions which stop the free course of Urin. For entring into the pores , they attenuate and cut the tough Flegm , and dissipate the grains of Gravel , which before , by means of some slimy moisture stuck together , and carry them off . So that the pores of the Kidneys being loosned by this commotion , the matter contained in them becomes dissolved , and easily passeth through them in order to its evacuation by urinary passages . And the case is much the same with those Herbs that move Womens Courses , by thinning and diluting their stagnating Blood , such as Saffron , Penny Royal and Sage , because by their heat they open the obstructions of those vessels by which the Blood is conveyed to the Womb. And accordingly we find by experience , that almost all Diuretick Plants are hot , as Rhadish , Rocket , Cinamon , &c. VII . Dandelion and Sesel●m provoke Ur●n . Dandelion is reckon'd amongst Diuretick Plants , which by opening of the obstructions of the Meseraick Veins , conveys a greater quantity of Urin into the Bladder , than little Children are able to contain , and so makes them let go their Urin when they are asleep in their Beds : And therefore the name of Pissabed is also given to this Herb. So likewise the Decoction , Juice and distilled water of Seseli or Hart-wort , or the Seed of it in Powder is very efficacious for the moving of Urin , breaking of the Stone and expelling it ; and is to that purpose exhibited to Infants as well as grown Persons . VIII . Why some Herbs cure Griefs and VVounds . Some Vegetables have an Anodyne Virtue , that is , such as mitigates the pains of the Flesh , and heals Wounds . All Adstringent Plants are endued with this virtue , and which consist of Particles like to those of Alome ; which entangling together , and penetrating the inward parts , do suck and draw out the hurtful and superfluous moisture from them ; by which means the part is disposed to admit and receive its due and proper Aliment , so that the Wound by degrees is filled with new Flesh , and so brought to a Scarr . IX . Of Vulnerary Plants . Amongst Vulnerary Herbs are accounted Adders Tongue , which is an excellent Wound-herb , whether inwardly taken , or outwardly applied . The Green Leaves of it do conglutinate Wounds and cure those that are troubled with Ruptures : It is exhibited in the distilled water of Horsetail for the healing of inward Wounds : And some Physicians assure us , that the Powder exhibited for many days together cures all manner of Ruptures . The Herb called Ladies Mantle , is also an excellent Traumatick or Wound-herb , it heals , dries , adstringeth , stops bleeding , and stops the Whites and Courses of Women . The Leaves , Top and Root of this Herb is often added to vulnerary Potions , Plaisters and Ointments . X. Of the use of Styptick or Adstringent Herbs . Thus Marsh mallows , Wheat , the Root of White Lillies and Camomile do asswage pain ; and St. Johns Wort , Mastick , Barley-flower and Birthwort do restore the Flesh in a Wound or Ulcer . Thus Plantan , Pomgranate-shells , &c. have a Glutinating Virtue , because they are Styptick or Adstringent , and consist of such particles which entangle one another , and pressing upon the part that lies under them , do as it were squeeze the superfluous moisture of it . XI . Poppies and Quinces are endued with a virtue te stop fluxes of Blood. Poppies , Quinces , the Juice of Pomegranates , and other such like , stop fluxes of blood . The Reason is , because the particles of these Bodies insinuating themselves into the Pores , do divide the agitated particles of the blood , and by interposing themselves , make a separation between them : So as by this means they are no longer so much agitated as they were , and by this means come closer together . Or else the cause of this effect may be , because the Juice of Pomegranates , for instance , lying upon the mouths of the Veins and Arteries , obstructs their narrow passages , and doth not suffer the Blood to come forth . For we find by experience , that the efflux of blood is stopt by cold ; as when in the bleeding of the Nose we apply cold water to our Temples or Nostrils , or a plate of Iron or a Key to the Nape of our Necks . XII . Of Styptick or Adstringent Plants Horsetail is a powerful Adstringent , and is accordingly used with great success in spitting or vomiting of Blood , stops excessive blood-fluxes , and all othes fluxes of the Belly : For which purpose either the Herb it self may be taken in powder to the weight of one Dram , or of the decoction of it in Wine four Ounces , Morning and Evening , or if three Spoonfuls of the distilled water be drunk for two or three days together . Much the same virtue is also found to be in the Herb call'd Great-water-dock , all the parts whereof , Stalks , Leaves , Flowers , Seeds , but more especially the Roots , do very powerfully adstringe , harden and conglutinate . And therefore this Herb succesfully puts a stop to , and heals all putrefying spreading Sores , as the Rose , whether whole or ulcerated , Ringworms , Fretting , Evils , Gangrenes , &c. And stops all manner of Fluxes of Blood whether of Emrods , or of Womens Courses . XIII . VVhy some H●rbs encrease Milk. Some Herbs conduce much to the encrease of Milk , as Fennel , Poly-mountain , Milkwort , &c. Others encrease Seed , as Sparagus , Pine-nuts , Rice , &c. The former of these help to encrease Milk , because they nourish much ; and therefore being mingled with the Alimental Juice , they open the pores , and remove the obstructions of those passages through which the Chyle is conveyed to the Breasts . For it is certain , that by a slight straining only , the Chyle becomes changed into Milk. And the Reason is much the same as to those Herbs which promote the generation of Seed ; save only in this one thing wherein they differ from the former , viz. that they abound with more Salt , and diffuse a greater heat through the Body . By which means the Organs appointed by nature for the generation of Seed , are more opened , and consequently give a more free passage to the matter . XIV . VVhy VVormwood , Bitter Almonds , &c. destroy VVorms . Wormwood , Bitter Almonds , Hartshorn Philosophically calcin'd , &c. kill Worms and expel them out of the Body of Men. The Reason is , because these Simples are bitter : For Worms delight only in things that are of a sweet taste , and with which they are nourished , as well as they were generated at first from them . For bitter things consist of rough particles , and which on all sides are surrounded with prickles , and consequently entring into the soft and spungy Bodies of Worms , they rend and tear their inwards . And by this means the Worms are killed , or avoiding the said bitter things , are expell'd by Stool , or sometimes tending upwards , are voided at the Mouth or Nostrils . Corallina or the Sea-moss that grows upon Coral is very famous for its efficacy in destroying Worms and expelling them , being given in Powder mixt with Wine , Milk , or the extract of Cassia , to the quantity of half a dram to Children under 14 years of age , and to those who are elder to the quantity of a whole dram . XV. How the qualities of the Herbs that Animals ●eed upon , come to be communicated to their Milk. Nurses Milk oft partakes of the Odor and Taste of the Herbs they have eaten : And it is notorious that Cows according to the difference of the Herbs they feed upon , do give a different Smell , Taste and Colour to the Butter that is made of their Milk. The Reason is , because the Milk is made immediately of the Chyle , and not out of the Blood , which hath been formerly the common opinion . For the Chyle is carried from the Stomach to the Breasts , and by some particular passages is carried from the Guts to the Receptacles of Milk. This is confirmed by the daily practice of Physicians , who give Purges to Nurses , when their Nurslings stand in need of being purged , because the purging quality of the Medicin is communicated from the Chyle to the Milk ; but not to the Blood , which takes a much longer circuit through the windings of the Heart and Arteries , and undergoing several changes , cannot possibly retain the Cathartick Virtue of the Medicines . For how can it be that , when a Nurse drinks Milk ting'd with Saffron , within half an hour after the Milk in her Breasts should be of the same colour , smell , and Taste , if Milk were made of the Blood , and not of the Chyle , which by some secret and short passages , is conveyed to the Breasts ? All which is further confirm'd by that Leaf of Succory which a Surgeon took out of the Breast of a Roman Matron , and which she had eaten the night before . CHAP. III. Of the obvious , or known Qulities of Plants . I. VVhy Vegetables are commonly Green. GREEN is the common colour belonging to Plants , not only to them that are yet young and flourishing , but also to some when they are old and withered . It is evident from what hath been said before , that the nature of Colours depends on the various Reflexion of Light , and the various disposition of the surfaces of those visible Bodies upon which it falls . So that those Bodies are of different Colours , whose outward particles are variously posited , and reflect the Beams of Light to the Eye . Thus the Green Colour we find in growing Plants , proceeds from the copious moisture wherewith they abound , the particles whereof are so mixed with other foreign particles , that they reflect and refract the Light in the same manner as those Bodies do , which in Rivers or standing waters are turned into Moss . And thus according to the various mixture of this moisture with the External matter , a different degree of Greeness is observed in Vegetables . For some of them are of a most deep Green , and such as these abound most with moisture , but their juice is not so exactly percolated as that of some others . Others are of a more pale Green , that is , such whose Leaves are of longer standing , or whose Fruits are come to their full maturity . Because in process of time a great part of the moisture flies away , and the crude or raw Juice being digested by heat , arrives at perfect Ripeness and Concoction . Hence it is that the Leaves of Plants sometimes put on other colours , and become Yellow or Red. II. VVhy the Fruits of Plants are of various colours . And whereas Fruits do very much differ in their colours , Pears and Apples being whitish , Plums yellow , Blue or Purple , Cherries Red or Black ; this proceeds only from the various percolation of their Juices , and the different texture of their parts . For it is apparent that the Juice in an Apple or Pear is first coagulated into Froth , which afterwards becomes a hard Flesh ; whereas in Apricocks , Figs , Cherries and Grapes , the same Juice is turned into a much softer substance . And therefore no wonder if from this different disposition of their particles , such different colours are produced in them . III. Why the Roots of most Plants are white . The Root which lies hid in the ground , is commonly more tender than the other parts of the Plant , and for the most part of a white colour . The Reason is , because the particles of the Juice , which by heat are agitated within the pores of the Roots , endeavour to get out , and accordingly in effect many of them do break their Prison and fly away . But being hindred by the Earth , that lies about them , from going further , they return to the Root again , where undergoing a 2 d Concoction , they make the Root the more tender . And forasmuch as that moisture which imparts a Greenness to the Leaves , is by the warmth of the Earth changed into froth , this makes the Root to look white , because according to the multipliciy of its surfaces , it reflects various parts of Light. Hence it is common with Gardners to cover some Plants with Mould or Sand , as Succory Endive , Cabbage , Leeks , &c. to make them tender , and to give them a white colour . IV. Whence the Odours of Herbs do proceed . Some Vegetables are much more odorous than others : For such as grow in Arabia , and other hot Climates , are of a stronger fragrancy than others ; as appears in Cinnamon , whick keeps its odour for many years . The Reason is , because the odoriferous Steams that proceed from Bodies , do consist of sulphurous or fat matter , which being attenuated by Heat , and reaching the mamillary processes of the Nostrils , doth affect them either softly and pleasantly , or harshly . And forasmuch as those Vegetables which grow in hotter Countries , are more exposed to the Rays of the Sun , which exhale the watry humours , the fat and sulphurous humour only remains , which furnisheth the matt●r of all Odours , and is the more readily conveyed to our Nostrils , as being disentangled from the encumbrances of the watry particles . Now that this fat and sulphurous matter , is that wherein the Odours of Bodies doth consist is evident from hence , because when this sulphurous matter is taken away by distillation , the odour or fragrancy that is in that Body is taken away together with it , as appears in the Caput Mortuum , or remaining Dregs that are left in the Alembick after distillation which hath no scent at all . And therefore it is no wonder , that those Plants are of a stronger scent , whose fat and oleous particles are resolved by heat ; and that those are of a weaker scent , and do less affect our Organs , which grow in moist and wet places . Because their Juice is not throughly digested for want of heat , and the abundance of moisture hinders the due concoction of the sulphurous matter , and keeps it from being dilated and rarefied . Hence it is that such Plants as these do smell more strongly when they are dry , than when moist and green , because then the odorous particles breath forth more freely , as being no longer drowned or entangled in moisture . V. Why Fruits in their progress to maturity change their smell . Fruits have not always the same smell , but change the same according to their several stations : For such as are near their perfect Ripeness , do smell more sweetly than those that are green and unripe . The Reason is , because since odour consists in the dry and thin parts of Bodies , the same is made the more pleasant , and doth more softly affect the Organ of smelling , by how much the matter of the said odorous Steams is more thin and better digested : Which certainly is then , when Fruits are arrived to the pitch of perfect maturity , and ready to be gathered . For then by reason of a long decoction the Juice is more purified , the parts digested , and their perfect percolation advanced . And when this happens , no wonder if copious steams proceed from Fruit at this time , and more pleasant smells than when they are only in their first tendency to maturity . VI. The ca use of the different Taste that is in Fruits . Almost all Fruits are distinguish'd by their Taste , as affecting the Tongue and Palat after a peculiar manner . Some are of a harsh taste , as Sloes ; other of a smart or sharp taste , as Onions , Mustard , &c. some sweet , as Wheat ; some sower , as Sorrel ; some bitter , as Wormwood , Aloes , &c. This difference of Taste in Vegetables , proceeds from the different texture of their particles whereof the Fruit consists , and which entring the Organ of the Taste , do affect the same . For these little Bodies , when they are mixed with the Spittle , have the power of moving the Tongue , and impressing several affections upon it . Wherefore the particles of such Bodies which draw the Tongue together , and make it rough and harsh , are said to be of a harsh or sower and adstringent taste as unripe Fruit. And such whose particles prick the Tongue , and divide it with the sense of a kind of dilating heat , are said to be of a sharp , smart and biting taste , as Pepper , Mustard , Arsmart , &c. Those which smooth the Tongue , and pleasantly affect , are called sweet , as Licorish , &c. Those which prick the Tongue , and affect it with a constringent sensation of cold , are called sharp and styptick , as Cypress Nuts , the Rind of Pomegranates . Such as impress a kind of dryness upon the Tongue , are called bitter , as Aloes , Coloquintida , the Lesser Centaury , Wormwood , &c. So that the whole difference of these Bodies consists only in this , that their particles are of a different magnitude , and vary also in their Figure , Motion , Hardness , Lightness and several other ways . VII . Why the smoak of Tobacco seems sweet after the tasting of Vitriol . Thus we find by daily Experience , that when a Man hath tasted Vitriol before his taking a Pipe of Tobacco , the smoak will seem as sweet to him as Hony , and with a pleasant tickling will affect his Organ of Taste ; because the styptick or adstringent saline particles that are in the Vitriol , being impregnated with the sulphureous particles evaporated from the Tobacco , do produce a sweet Taste . VIII . Why Garlick and Onions lose their bitterness by boyling . Some Fruits do change their Tastes , so as that those which before were biting and bitter , become sweet and grateful ; thus Garlick and Onions , being boiled in water , lose their Acrimony . The Reason is , because the Taste of Fruits consists in their stiff and pricking saline particles . And therefore Garlick and Onions become sweet and pleasant when they are boil'd , because the fire opening their pores , makes way for the saline particles to exhale . Hence it is also , that all Fruits , as they ripen , grow sweeter ; forasmuch as upon the evaporating of their moisture , their salt Armoniack and other volatil saline particles fly away , leaving these only behind them that procure a sweet Taste to the Fruits . And it is for the same reason that Garlick and Onions , being soaked in boiling water , acquire a milder Taste , viz. because the particles of Salt that were in them are dissolved by the water , and being intangled with it , do evaporate into the Air. Thus the Root of Arum , when new took up out of the Ground , is of an extream smart , biting and pungent Taste , but being dried , and especially being long kept so , becomes insipid , and consequently inefficacious and of little or no virtue . CHAP. IV. Of the Ocoult Qualities of Plants . I. Wherein the Purgative Virtue of Plants doth consist . THE Occult Qualities of Plants , are generally such as belong to Medicin , and are di●●ernible by Reason , rather than by the Senses . Amongst these we will first speak of the Purgative Virtue or Quality wherewith several Plants are endued , and by means whereof they expel excrementitious and corrupt humours out of the Body by siege . Thus Rhubarb and Scammony purge Choler ; Sena , Polypody of the Oak , Dodder of Thyme , Hellebor , &c. Black Choler or Melancholy ; Carthamus or Wild Saffron , Agarick , Herb Mercury , Spurge , and the several sorts of it , Phlegm and watry Humours ; Fumitory , Cassia Fistula , Prunes , Bugloss , purge and cleanse the Blood from its dregginess . The Opinion of the Antient Physicians was , that Medicins that are endued with a purgative virtue , exert the same by a likeness of substance to those Humours they attract and expel out of the Body . And therefore GALEN who made the purging virtue of Simples to consist in attraction , Simpl. Lib. 3. asserts a similitude between the substance that purgeth , and that which is purged : So that Purging Medicins , according to his Opinion , do pick out some particular humour , which they expel out of the Body , viz. some , Choler ; others , Phlegm ; some , Melancholy ; &c. But I cannot be induced to comply with this opinion , seeing that daily experience teacheth that the Melancholy Humour which is tough and clammy , is expelled by Cassia and Coloquintida , which have no affinity at all , or likeness of substance with that Humour . So likewise the watry or serous humours of Persons afflicted with the Dropsie , are evacuated by Aloes and Rhubarb , when yet there is no similitude between their substance and that of the Moisture they expel . II. There is no need of this similitude between the Medicins and Humours they evacuate . But if we examin this point more narrowly , we shall find that contraries are rather cured by contraries . For what Physician doth not know that the detersive quality that is in Wormwood consists in its sulphurous Spirit ; that the Roots of Plantan and Bugloss do thicken thin Choler by the clammy consistence of their Juices ; that all the Sorrels , Juice of Limons , and all Acids do thin and cool the Blood , and allay its Fury , not with adust Sulphur , but with their acid and cold Spirits ? Besides infinite other Simples , which either by softning or asswaging do purge those Humours with which they have no similitude at all . III. Purgative Plants exert their efficiency by fermentation . Conclude we therefore , that Purging Med cins expel corrupt humours by fermentation in this manner : The Medicament as soon as it is taken into the Stomach , doth there meet with a sharp humour , which flows from the Heart through the Arteries , whereby , as with an Aqua-Fortis it is dissolved : But forasmuch as it is of a different substance from the said Juice , and therefore doth not mingle with it without difficulty , the Juice by means of the Medicin , begins to swell and ferment ; as we see that Wine doth , by reason of its Sulphureous Lees , or by the mixture of some Heterogeneous Substance with it . Afterwards this Medicament is carried to the Lacteal Veins , and from thence to the common Receptacle detected by Pecquet , and thence to the Ductus Thoracicus or Breast-passage , and so is conveyed into the left Axillary Vein where it is confounded with the Blood. But because by reason of the Heterogeneousness of its Parts it cannot be united with the Blood , therefore it joins it self with the Choler , Phlegm , or other Humour lurking in the Blood. And forasmuch as it is carried with the Blood throughout the whole Body , it doth in its passage twitch and prick the parts , whereupon they become contracted , and squeez out the humours that were lodged in the Vessels belonging to the said parts . Now while all the parts of the Body do thus successively expel these humours , and they find no refuge for themselves in the Veins , they are driven towards the Stomach and Guts , which they irritate to expulsion , and so are evacuated with the common excrements of the Food . Thus according to the difference of the Plants , different Humours are expelled ; as Choler by Scammony , Phlegm by Coloquintida , Melancholy by Black Hellebor ; Black Choler , so called , by Dodder of Thyme , Sweat by Sarsaparilla , &c. IV. VVhat is the cause of the Vomitive Virtue of some Plants . Some Vegetables excite Vomiting , and evacuate Humours by the Mouth ; as the middle Bark of Wallnut-trees , Coloquintida , Broom Leaves , Nux-vomica , &c. The virtue of these Vegetables is not much unlike that of Purging Medicaments , save only in this , that their operation is more swift , by exciting a quicker Fermentation . Corrupt Humours therefore are expelled by Vomit , when the Stomach being vellicated or twitched by the particles of the Medicament , becomes so contracted and drawn together , that it can no longer contain the matter that is in it , and consequently drives forth the Humours that oppress it . And therefore it is dangerous to exhibit Vomiting Medicaments to those who are troubled with the Pthisick or Consumption , or that have strait Chests , lest the Stomach should not have room enough to display it self in vomiting , or by a too violent compression of its Fibres should occasion a dangerous Convulsion . This vomitive virtue is found in the Herb Groundsel ; the Juice whereof being taken in Beer , or the decoction of it in Water with Currans or Hony , affords a gentle Vomit . So the Water of a certain Thistle called Silybum , being drunk causeth vomiting : And the Root of the Herb Thapsia , as well as the Juice or Decoction thereof , doth purge upwards and downwards with great violence , and therefore is not safe to be given inwardly . V. Of the different virtues that are in Plants . Some Plants cure the Diseases and Griefs of some parts : Thus Betony , Hysop , Maiden-hair , &c. are good for the Head ; and particularly Sweet Marjerom do help the cold affections of the Head and Brain , which way soever it be taken ; the Powder of the dried Herb snuft up , provokes Sneezing , evacuates Phlegm and stregthens the Brain ; and the same effect is caused by the Juice of the Herb snuft up . Borrage , Angelica , Bugloss and Balm , strengthen the Heart , and remove the Distempers of it : Wormwood , Sage and Anniseed are good for the Stomach . Thus Endive and Succory are appropriated to the Liver , and afford a most excellent Remedy to remove the Heat of the Liver or its obstructions , which way soever it be taken , whether the Leaves of them be eaten raw or boyled , or the Juice , distilled Water or Decoction of them ; and therefore greatly commended in Fevers . The Reason of all these manifold virtues is to be lookt for in the different texture of their parts . For seeing that the disposition of the parts of the Head , Heart , Stomach and Liver is different , they must consequently be cured by different Remedies . Now Bodies , according to their various Figures , produce also various effects . Thus subtil and thin Bodies are aperitive or opening ; thick Bodies , incrassate ; sharp and biting are abstersive , and cutting or inciding . VI. VVhy the Odour of Herbs sometimes performs the same effect which the substance of the Herb taken doth produce . There are some , who with the smell of Herbs or Drugs , are purged , much after the same manner as if they had taken a purging Medicament inwardly . Thus I knew an English Gentleman in Flanders , who when ever he passed by an Apothecaries Shop , was moved to go to Stool , as if he had taken a Purge . The Reason of this was , because the particles flowing from the Purgative Drugs or Medicins , did so agitate the Brain , and consequently the Nerves of this Person , that thereby they put the Humours in the same motion , as might have been expected from a purging Medicin ; viz. by the rushing of the Spirits against the Fibres of the Stomach and Guts . VII . VVhy Cats are so much delighted with Catmint . Cats take a very particular pleasure in Catmint , tumble themselves over it , and seem wonderfully pleased with the touching of it . The Reason is , because Catmint consists of such particles as have a great sympathy and agreement with the Brains of Cats : For seeing that Beasts are not led by Reason or Judgment , but by a meer impulse of Nature , or rather by the disposition or make of their Organs , they cannot but be allured by those objects that present themselves to them ; which could not be , except some steams did proceed from them , with the scent whereof they are affected . Wherefore we may conclude that in Catmint there is such a Texture of Fibres , as hath a great agreement and correspondence with that of the Brains of Cats . VIII . VVhy a piece of Pompion being put into a Pot wherein Flesh is boyling , makes the same tender . A piece of Pompion put into a Pot in which Flesh is boyling , doth make the same more tender than ordinary . The Reason is , because the Pompion abounds with strong Spirits , and a sowrish Juice : Now it is manifest that all sowr things are endued with a resolving virtue , which daily experience shews us concerning Vinegar . And PLINY assures the same concerning sharp pointed Docks , viz. that being boyld with Flesh , it makes it more soft and tender ; because its sharp and corroding quality doth dissolve the Texture of the Fibres . IX . The same virtue is also found in the Herb Patience . The same virtue is by Botanists attributed to Hippolapathum or Patience , which renders the oldest and toughest Flesh , when boyl'd with it , tender and fit to be eaten . For this Herb being of a slippery and moist nature , it makes the oldest and toughest Beef , or any other Meat , soft and tender . And for this reason the use of it was very frequent amongst the Antients , because it renders the Meats boyl'd with it , easie to be concocted , and besides , makes the Body soluble . X. VVhy some Plants are of a deleterious quality , and kill living Creatures . Some Plants are endued with a pernicious power of killing Animals . Thus the Herb Napellus , which is a kind of Wolfsbane , doth by its extream heat burn the Body , and scorch and consume the firmer parts of it . This effect is also to be attributed to the figure and motion of Plants , by means whereof they exert their virtues , and perform those effects we are surprised at . For it is most consentaneous to reason , that the parts whereof Poisons consist , are very stiff , penetrating , hard , and armed with Prickles : In the same manner as we find by the Microscope that Nettles are armed with an infinite number of prickles ; wherefore such Bodies as these being fermented in the Stomach , and mingled with the various Humours therein contained , doth excite a very violent Ebullition , especially when it is conveyed out of the Vena Cava into the left Ventricle of the Heart , and from thence into the right . For its heat being here encreased , it breaks forth with extream violence , and rushing upon the inward parts , doth with its sharp points and prickles penetrate , corrode and tear their substance . XI . Hemlock kills by its great coldness , and Scammony choakes men by drawing of the VVind-pipe together . Again , there are other Plants which are of a contrary virtue , and which kill Animals by their coldness , as Hemlock , which kills People , or makes them go mad or sensless ; and Scammony which doth so draw the Wind-pipe together , that it sometimes choaks and kills Men. The efficacy of these Plants consists in this , that they stop the circulation of the Blood , and suppress the Native Heat ; for seeing that the motion of the Blood is smooth and easie , as passing through all the parts of the Body with an even Course , when ever cold , or slowly moved Bodies do enter into the mass of it , they disturb and confound the motion thereof , and dull or diminish the heat of the Plants : And being through the Veins carried to the Heart , they cool it , and reduce it to a kind of lukewarmness . For whether the agitation of the particles of the Poison , be contrary to the motion of the Blood , or whether the slowness of their motion do destroy its heat , still the same effect will follow , if by their entring into the Heart a change is made , and the Orifices through which the Blood is conveyed thither , be never so little obstructed . For no other reason can be assigned why the eating of Hemlock , makes persons mad or sensless , but because the said Herb taken inwardly , causeth disorderly twitchings or vellications of the Brain , by which means the Spirits are hindred from their natural and due motion through the Fibres of it . XII . How the Plague is propagated . Thus Phycitians tell us , that when the Air is corrupted by noxious exhalations , the Plague and other Epidemical Diseases are produced ; for the particles of the Pestilential Steam being taken in with the Breath , and insinuating themselves into the Blood , do confound the natural ranging of its particles : Even as the Rennet when mingled with Milk , and diffused through the substance thereof , doth so change the ranging of its parts , as to make a fixt Body of that which was fluid . XIII . The Root of the Tree Baxana is present Poison . And probably it is for no other reason , that the Root of a certain Tree called Baxana , growing in a Kingdom belonging to the Dominions of the Great Mogul , doth immediately cause death to them that take it , by stirring up a sluggish drowziness or heaviness over the whole Body ; but because as soon as it enters into the Blood , it doth by its coldness allay the heat of the Heart , and by this means diminish the heat that is in the extream parts of the Body , and afterwards by degrees cools the Blood that is in the Veins and Arteries , whereby soon after the Heart it self is seised and nummed . But what is most wonderful is that Historians tell us , that the Fruit of the said Tree is altogether harmless , and is safely eaten by the Inhabitants ; the reason whereof probably is , because the Fruit is better concocted by the heat of the Sun , and the cold Humours discust and exhaled . XIV . Hemlock is not hurtful to all living Creatures . Neither is Hemlock always hurtful to all living Creatures : For Starlings , if we may believe GALEN , do commonly feed upon it , and without receiving the least hurt thereby . And some Anatomists tell us , that they have found the Crop of a Bustard full of Hemlock Seeds , which had only 4 or 5 grains of Wheat mingled amongst them . And the Poet LUCRETIUS adds , Thus with cold Hemlock Goats we fatted see , Tho' it to Man a present Poison be . Wherefore it appears that Hemlock is not deadly to all Animals ; seeing that the use of it inwardly is commended by Modern Physitians in the Swelling and Inflammation of the Spleen , as the Juice of it is an ingredient in Splenick Plaisters to soften the hard swellings thereof . XV. VVhence VVild Fig-trees hath the power of taming a mad Bull A Mad Bull is tamed by tying a twig of the Wild Fig-tree to his Neck ; and the same virtue is also attributed to the Herb oen●theris . This may come from the Steam proceeding from that Plant , which being diffused through the Wild Bulls Brains , doth so affect the Nerves thereof , as to cast him into a stupidity or numness , whereby he loseth all his strength . The same is related by some concerning the Lion , that as soon as he is but toucht with the Herb Adamantis , he lies with his Mouth open upon his Back , as having quite forgot his wonted strength and fierceness . XVI . VVhence some Herbs have a virtue of resisting Poison . Some Herbs are endued with a virtue against Poison , and therefore are called Antidotal , or Alexipharmacal . Thus Purslain cures the biting of Serpents ; Endive that of Spiders . Wine resists the cold Poison of Hemlock . And besides these , Marygolds , Carduus Benedictus , Angelica , Rue , &c. do powerfully resist Poisons , and break the force of them . The Reason is , because these Plants consist of such parts as have a great affinity with the particles of those poisons which they overcome , and therefore easily join with them ; and by this means do by their interposition break the force of them , and change the ranging and figures of those Bodies , which without their conjunction , do fix and coagulate the Blood. For hot things do easily discuss and overcome the violence and malignity of cold Poisons ; and therefore the Publick Executioner adviseth Crito , that he should not suffer Socrates to dispute too earnestly , lest his Body should be too much heated , SCALIGER Exercit. 52. Moreover cold Plants also are found to be of use for the curing of cold Poisons , by drawing them out of the Body ; because when the Blood is coagulated by cold , it is dissolved again by the supervening liquor , and its nimblest particles are put into motion again ; and both of them being thus confounded together , are variously agitated , and at last thrust together out of the Body . CHAP. V. Of the Sympathy and Antipathy of Plants . I. VVhy the Female Palm-tree delights in the Neighbourhood of the Male Palm . THE Female Palm-tree seems to delight in the nearness of the Male Palm , and becomes more fruitful by standing in its Neighbourhood ; and therefore inclines her Top and Branches that way ; and being removed farther from the Male Palm , languisheth , and sometimes withers and dies . The Reason of this sympathy between both these sorts of Palm trees , is a certain steam which proceeds from the Male Palm to the Female , which abounds with a seminal and faecundating virtue , and insinuating it self into the Female Plant , make her more flourishing and fruitful . For it seems that in this case it happens with the Palm-tree , as with Hens , which lay Eggs indeed without the Cocks Treading , but yet the said Eggs cannot be animated or become prolifick , tho' the Hen sit never so long Brooding upon them . So Herbs being endued with a vegetating virtue , as well as Animals , which propagate themselves by a moist Seed , do transfuse the generating virtue and vital spirit from one to another by mutual embraces , and this by a tacit consent of nature , and are cherished , animated , flourish , and produce Fruits and Seeds by a hidden and secret inspiration . II. VVhy Cucumbers and Gourds have such an aversion from Oyl . Cucumbers and Gourds have an antipathy against Oyl ; so that when ever it is put to them , they seem to turn away from it . The Reason is , because the Effluvia that proceed from Oyl , consist of such particles , as do with their sharp prickles and points run into them , and cause their Fibres thereby to be contracted , so as that they seem to avoid , or withdraw themselves from the Oyl . III. VVhy the Ivy hath an Antipathy against a Vine . The same Antipathy is found between the Ivy and the Vine , insomuch that a Cup made of Ivy will not admit of Wine . For if we may believe CATO , if a Cup be made of Ivy , and be filled with Wine , if the same be mingled with Water , immediately the Wine will run out of the Cup. And it was probably for this cause that the Ivy-tree was consecrated to Baechus , forasmuch as it resists Drunkenness , and removes pains of the Head , caused by too much drinking of Wine . IV. VVhy Cabbage is said to be an Enemy to the Vine . Cabbage is said to abhor the neighbourhood of the Vine : And Rue to be an Enemy to Hemlock . One Plant is said to be friendly or inimical to another , not by reason of any Sympathy or Antipathy that is between them : For such a concord or enmity is not to be found among Plants ; but on the contrary when one Plant is nourished with the same kind of Juice that another is , their Neighbourhood becomes hurtful to one another , because then the one robs the other of his due Aliment . But if two Plants are maintained by a different Juice , then they are said to sympathize together , as Rue flourisheth , when planted near to a Fig-tree , because they draw a contrary Aliment from the Ground ; the one of them taking in a moisture which gives it a sweet taste , and the other such as affords it a bitter taste . And it is for the same Reason that a Rose-tree which grows near Garlick , brings forth sweeter scented Roses than that which is in the neighbourhood of other Plants , because the noisome and offensive Juice being suckt in by the Garlick , the purer and more fragrant Juice is left for the Rose-tree . V. Why some Herbs avoid touching . The Live Plant so called , to which the Arabians and Persians give the name of Suluc or Saluc ; and to which Philosophers have given the Title of Chaste or Shamefac'd , if whilst it is Green it be touched never so slightly with ones hand , or be never so little squeez'd with ones finger , it presently starts back , and contracts it self ; but no sooner is the hand of him that toucheth it withdrawn , but it returns again to its natural posture . And THEOPHRASTUS tells us , in the 4 th Book of his Histories , Chap. 3. that there was a Tree growing about Memphis in Egypt , which to outward appearance was thorny and prickly , and its Leaves resembled Fern , the Branches whereof beiong touched , the Leaves immediately fall and wither , and afterwards recovering their strength , rise again and return to their former state , as is exprest in the Figures . HENRICUS REGIUS , in the 4 th Book of his Natural Philosophy , endeavours to give a reason of this Miracle ; supposing in the first place this Plant to be of a very tender and pliant substance , which upon the least touch is wounded and bruised . 2 dly , That there are some inward Nerves or Fibres marked 1. 1. wider than other outward ones , signed 2. 2. by which means the steams proceeding from the Earth T. are in more abundance sent up into the upper Fibres of the Leaves b b , than into the lower c c. For when a Hand toucheth the upper part of the Leaves about d d of the Figure A , the Spirit contained in those parts , are by the inward Nerves 1. 1. carried downwards , and consequently open the Flap Doors and Pores that are about 5 5 , and pass out of the wide Nerves into the narrower 2 2. And forasmuch as they cannot go downwards , because they are hindred by the upward tending Flappets 6 6 , they ascend , and in their ascent shut the Flappets 4 4 , opening from the narrower Nerves to the wider , and thus necessarily pass to the inward Muscles or Fibres c c , and blowing them up , draw the Leaves downwards , as far as the Joint marked .... reacheth , according to the situation and figure expressed Figure A and B. But afterwards when those Leaves are bent or prest downwards , and that the Hand be removed again from the Herb , then the said steams do move more copiously out of the Earth T through the inward and wider Nerves 1 1 , and the ascending Flappets 3 3 , than through the outward and more narrow 2 2 , into the Stalk , and therefore first shut the Flappets that are about 5 5 , and that lead from the wider and inward Nerves , to the outward 2 2 ; and proceeding further , enter into the Muscles of the Leaves b b , and blowing them up , do somewhat lift up the Leaves d d that before were prest down ; and by this their lifting up of the Leaves do press those steams which are in great abundance in the lower Muscles of the Leaves b b ; which being pressed , do open in the narrow Nerves 2 2 , the Flappets 4 4 that lead from the outward Nerves to the inward , and pass into the broader and more inward Nerves 1 1 ; and there forasmuch as by reason of the copious exhalations ascending from the Earth T , and shutting the Flappets 5 5 , which lead towards the narrow Nerves , they can neither descend , nor pass sideways , they are by those copious exhalations , which continually ascend into those wider nerves , necessarily determined , to the upper Muscles of the Leaves b b ; and entring into them , together with steams that ascend out of the Earth through the broader Nerves , they lift up the upper parts b b of the Leaves that are filled with these copious exhalations , but emptied with respect to their inward parts c c , and so reduce them to the same situation they had before , and the same that is expressed in the Figures . VI. Another Explication of the contraction of Leaves of the Sensitive Plant. But this contraction of the Leaves may also assigned to Cold. For the coldness of the Finger represseth the spreading motion of the Juice in the Nerves , and in a good measure stops the influence thereof ; whereupon the Fibres do immediately contract or draw in themselves , and at the same time bend the Leaves downwards : After the same manner as we find that Cold doth condense and wrinkle the Skin of our Body , whereas on the contrary , Heat doth extend the same . And the Lappets of the Leaves are drawn inwardly together , because probably the upper Fibres of the Nerves are drier , and consequently are more readily and sooner contracted ; and the lower Fibres softer , and therefore do more easily give way to be extended . Now that this contraction is caused by Cold , may be gathered from some Flowers , which shut themselves in the night , as Marygolds , Succory and Woodbind-Flowers . So likewise we read of a Plant , the least stalk whereof , if it be wounded with a Knife , immediately the Flowers fall from it , because of the contraction or shrinking of the cut Nerves to which the Flowers are fastned . VII . Why the Pudefitan Tree abhors the Breath of Man. Some Historians tell us of a Tree called Pudifetana , which cannot so much as endure the breath of Man. The Reason of this may be , because the particles of the exhalation are so strongly driven against this Plant , that its tender Nerves are thereby dissolved , and their Texture disturbed , As we find that the tender Bodies of Children become sometimes infected by the Breath of an Old Woman . VIII . Of a Tree in Japan , that hath sympathy with Iron . Travellers who have visited the Island of Japan , do make mention of a certain Tree , which hath such a friendship with Iron , that if a Branch of it be lopt off , it may be joined and fastned to it again , by means of a Nail struck through it into the Tree , and flourish again as much as ever . Yea if the Tree begin to decline or wither , it presently recovers as soon as filings of Iron are laid to the Roots of it . Supposing this Relation to be true , this effect does seem to be attributable to nothing else but to the indented particles of Iron , which do open the pores of the Root , and so cause the Alimentary Juice to pass up more freely into the Stem of the Tree . And forasmuch as some of these particles do continually break forth from the Iron of the Nail that is struck through the Branch , no wonder if by this means , the obstructions are taken away , and the ready passage of the Juice be furthered . IX . Why Maidenhair and Cabbage cannot endure water . Maidenhair and Cabbage seem to abhor water , and to keep it off from themselves . And therefore if they be dipt in water they do not grow wet , but are taken up out of the water as dry as when they were dipt in . The Reason is , the great smoothness of their surface , which is such , that it will not suffer any water to stick to it . For water cannot stick to any Body , except its surface have some small roughness or wrinckles , wherein the liquor may stick and be intangled . Hence it is that all fat and greasie things can admit of no water to stick to them , because Fat hath a very smooth surface , and doth render those things smooth that are besmeared with it . Or this quality in Maidenhair and Cabbage whereby they reject water , may be attributed to a very thin Down that covers their Leaves , such as we see there is in some Fruits , which gather all the drops of water upon their points , and keep them rounded there , so that they cannot penetrate any deeper , nor wet them except after a long lying in water . X. Why Water Mallows seem to have an Antipathy against Lead . A Man that hath dipt his hand in the Juice of the Root of Water-Mallows , Purslain and Herb Mercury , may put it into melted Lead , and receive no hurt thereby . This proceeds from the natural coldness of these Juices , and also from the clammy thickness of them , which covers the hand as it were with a skin , and hinders it from being touched by the melted Lead . To which may be added , that they leave also a great smoothness upon the skin , which makes the Lead immediately to glide from it , so that the heat of it hath not leisure to penetrate the pores of it . XI . How Dittany draws any Iron Weapon out of a wound . So great is the sympathy betwixt Dittany and Iron , that upon the touch of it Iron Weapons drop out of the Wound of any living Creature . According to what TULLY tells us in his 2 d Book de Natura Deorum : It is reported that the Goats in Crete , when they are wounded with Arrows , do seek for the Herb Dittany , which they have no sooner tasted , but the Arrows drop out of their Bodies . Some have supposed this effect to be caused by a kind of Magnetical Virtue in Dittany , whereby it attracts Iron ; but daily experience hath convinced this conceit of falsity . For this Herb when applied to Iron , exerts no Magnetical Virtue at all upon it . Conclude we therefore rather , that Iron Weapons drop out of the Body upon the eating of this Herb , because it makes the Wound wider , and opens the Orifice by its agitation of the parts of it ; so that by this means the Iron either drops out , or is easily pulled out with the least touch . To which may also be added the force or impulse of irritated Nature , which beiong assisted with the particles of the Herb , or some Effluvia proceeding from it , doth endeavour to thrust out that which is hurtful to it . XII . Wild Pennyroial is a great enemy to the Rattle-Snake . Those that have lived in Virginia tell us , that a sort of Wild Pennyroyal grows there , which is so hateful to a Serpent called the Rattle-Snake , that if the bruised Leaves be but held to the Nostrils of this Serpent for about half an hour , it infallibly kills it . And therefore this Snake is never found in those places where this Herb grows . XIII . There is no such virtue in Plants whereby they can chase away Devils . There are no Plants that have the power of driving Devils away . For Bodily Substances cannot exert any activity upon Spiritual or Immaterial Ones . And tho' some Herbs are applied to persons possest , in hope to yield them some relief , yet must not we conclude from thence , that they have any power against the Devils themselves , for the reason above-mentioned . CHAP. VI. Of the Original of Plants . I. Whether Plants grow without Seed . IT is believed that some Plants grow of themselves without Seed ; such as Asarabacca which grows sometimes upon Walls ; and a kind of Maidenhair which grows on the sides of Wells and near moist places . Besides , many other Herbs which of themselves sprout out of the mould that hath been deep dug out of the ground . II. The opinion of the Cabalists . They who attribute the virtue of inferiour things to the Stars , and suppose that nothing can be done upon Earth , without the concurring help of the Heavenly Influences , refer the original of Plants to the Sun , or any of the other Planets or Stars , as making them the Authors of all Sublunary Generations . And therefore such as these are of the opinion of the Cabalists who precisely assert , That there is no Herb or Plant here below , which hath not his Star in the Firmament , which strikes with its Rays , and bids it grow . But having before treated to the power of the Stars , and taken it for granted that our Modern Philosophers are not so weak as to attribute all particular effects to general Causes , we must look out elsewhere for the Original of Plants . III. The opinion of some Philosophers . Some are of opinion , that all Plants spring from the fortuitous meeting of some Earthly particles , as when the insensible parts of the Earth being agitated in the upper Crust of the Ground by the subtil matter do acquire such a figure , together with such a situation and motion , as is necessary for the first formation of the Plant : And from whence , as to the foundation , all the other parts afterwards are reared , whilst the Nutritious Juice mounting up through this first Rudiment of the Plant , doth dilate the parts , and assigns a certain figure to them . They suppose indeed that the Generation of Plants is somewhat Analogous to that of Animals , viz. when Plants do arise or spring from a Seed sown : Because the Seed in this case resembles the Egg of Animals , as confisting of a Bud , a Shell , Membrans , and a Yolk . Yet with this difference , that the distinction of Sexes is not requisit to the generation of a Plant , because every Plant gives forth its Seed in the Fruit it produceth ; which Seed doth not stand in need of a Womb to receive and cherish it , since the Fruit it self supplies that place . But yet for all this they suppose also that Plants may be Generated without either Root or Seed . IV. Herbs sometimes grow on the surface of the Sea-water . For they observe with the Antients , that Herbs grow on the top of the Sea , and that these are the product or effect of the coagulated Sliminess of the Water , wherein the heat of the Fire is most predominant , and the Sea moves more slowly than in other parts of it . Yea there are some who have made it their observation more than once , that Herbs have sprung out of Snow that hath been kept a long while , which Herbs they have found to be of a bitter Taste . Neither can this be any matter of so great wonder to us , when we find that Worms , not much unlike those which are generated in our Bodies , are sometimes generated out of Snow , as some ingenious persons in Germany have lately observed . V. From calcin'd Earth several Plants have been produced . Others again have observed , that Herbs have sprung forth from burnt or calcin'd Earth , especially after it hath been watered with a copious Shower . Because by the power of Heat , the particles of Bodies are as it were let out of their prisons , and joining variously together , do form the Rudiments of Plants ; which the moisture doth further unite and work together . Now that in this Earth the Seeds of Vegetables lie hid , may be gathered from this , that if after it is burnt it be exposed to the Air and Rain again , it brings forth divers Vegetables . VI. By what means a Wood could spring up without the sowing of any Seeds . Historians tell us , that a great Wood sprung up out of the ground in Cyrene , after the falling of great and copious Showers , which extended it self to many miles . And THEOPHRASTUS Histor. Lib. 6. Cap. 3. says that a famous Tree called Laser ( which PLINY reckons amongst one of the excellent gifts of Nature , as being of great use in many Medicinal Compositions , and strengthning concoction in Old Men and Women ) sprang out of the Earth in those parts , after a shower of Rain , whereas before it had been there altogether unknown . Some imagine that this great Wood and useful Tree did not spontaneosly , or of themselves spring out of the ground , but from Seeds carried thither by the Winds . But they suppose there is no necessity to grant this , forasmuch as THEOPHRASTUS tells us , that the ground in Crete can scarcely be turn'd up , but that Cypress Trees do spring up from it , and this not from any foreign Seeds conveyed thither , but because the ground there abounds with particles , which , when exposed to the Air and agitation of the Sun Beams , do form the Rudiments of those Trees . And the reason , say they , why the same doth not happen in other ground , is because the particles of Seed , cannot be so mingled and grow together , as is necessary to form the first organization of those Plants . For it is a thing notorious beyond all dispute , that every ground is not proper to bring forth all manner of Plants ; for we see that those Plants which grow in great abundance in both the Indies , Brasile , Arabia , &c. will not grow in England or Flanders , or other northern parts of the World. Yea in one and the same Country some Plants grow in one part , and not in the other of it , according to the peculiar quality and disposition of the ground . So that they suppose that Woods may be generated , not only by the industry of Man , or by Seeds carried by the Winds , but from particles found in the ground , which by heat may be so disposed , as to shoot up into different Plants . VII . Hedg Mustard grows without Seed . Wherefore it cannot seem strange that on the Dikes that are cast up in the Isle of Ely for the draining of the Fenny Grounds such vast quantities of Mustard Seed should grow , tho' never any known in the memory of men to have grown there before . So likewise after the Dreadful Fire of London great quantities of the Narrow Leav'd Neapolitan Hedge-Mustard was known to grow in the Ruins of this City , according to the relation of many Credible Authors , whereas for many hundreds of years the ground had been built with Houses , nor ever any such Herb was known to grow there , so that it must be concluded , that either this Herb did grow of it self there , or that it grew up from Seeds that had so long been hid in the ground , which none will easily admit . VIII . How Plants grow upon the tops of Houses and Rocks . But all difficulty will be removed as to this point , if we consider how Plants grow upon Walls , the tops of Houses and Rocks : To which places it is not easie to be conceived how any Seeds should be conveyed ; and therefore it seems most obvious to conclude , that they proceed from large and plentiful Showers , which leave some slimy matter upon the said Walls and Rocks , which being cherished and assisted by the Suns Prolifick Heat doth bring forth Herbs . It cannot be doubted , but that many particles of the Earth do mingle themselves with the steams that do continually ascend from it ; which afterwards when the said steams or vapors are turned into Rain , fall down again , and cleave to rough Bodies , and when the water is again rarefied into vapor , do remain behind upon the said Bodies in the form of Slime or Mud , out of which afterwards many Plants do bud . IX . All Plants proceed from Seeds . But notwithstanding all these Reasons and Experiments , our modern Philosophers believe that all Vegetables are formally contained in their Seeds ▪ and that they are not formed by apposition of parts as Stones and Metals are , but at once and all together like perfect Animals . They cannot imagin how the fortuitous concourse of divers particles can form that vast number of similar parts as well as organical , which enter the composition of every Plant. Neither can they any more conceive how the pores of the grain of Seed that is cast into the ground should be so disposed , as that the Juices which penetrate them , should of themseves range themselves into that order , wherein consists the form of each Plant. Wherefore they conclude that all Plants were formed together and at once , and that they are so comprised one in another , that the latter are only an uncasing or unfolding of that which was contained in the first Plants . X. This confirmed by the instanc● of a Bean. Accordingly we see that a Bean contains formally the Root , Stalks and Leaves of the other Bean that is to grow from it ; which therefore makes it probable that this 2 d Bean does again contain a 3 d , and this 3 d a 4 th , and so on to an infinity . So that we are to consider the growing of Plants only as a repetition of Generations performed every year , by the production of new Leaves , Flowers and Fruits , whose Branches actually contain an infinity of others ; and to conceive that of all the Leaves , Flowers and Fruits that are actually formed in the Branches , there be only a certain number that can be unfolded every year . XI . Malpighius's Experiment to this purpose . MALPIGHIUS designing to make a trial whether Earth , without being sown with any Seed , could bring forth Herbs of it self , put some Earth which had been dug deep out of the ground into a Glass Vessel , and bound over it a manifold doubled piece of Silk , so as that the Air and Water might pass through it to the Mould , and yet keep off those small Seeds that are carried up and down in the Air ; but he could never find that any Herb ever sprouted in the said Glass . XII . God is the Author of the first Plant of very Spe●s or Kind . So that we must conclude that the first Plant of every kind was at the beginning produced by God , when he divided the matter of the World into parts of that exact bigness and figure , as they were to be in order to their composing the Buds of each kind of Plants . But not that they were produced according to the before-mentioned opinion of some Philosophers , from the fortuitous concourse of many principles , which so united themselves together , as to form such a Plant ; for if this were so , we should see sometimes Plants of new kinds produced , which never hapning , we must conclude , that God is the Author of the first Plants of each kind . XIII . The cutting or lopping of Plants conduceth to the conservation of them . Plants that are frequently cut , cropt or lopt , do grow the better , and live so much the longer . The Reason is , because frequent Amputation doth renew the Juice of the Plant , by keeping it from spending it self too much in luxuriant and supernumerary Branches . So that Plants that are wont to live one year only , if they be not cut in time , when they are duly cropt , will outlive that time ; such as Lettice , Purslain , Cucumbers and the like . And as to Trees , we find that such as are not used to be lopt , do never attain to the tallness of other Trees of the same kind , on which Amputation is celebrated . XIV . Why Plants growing in different places , are endued with different properties . Plants that grow in the Philippine Islands are indued with different qualities , and as they are planted or grow towards several quarters of the World , they are accordingly indued with various affections . For those Leaves which grow towards the East are good and healthful ; whereas those which grow towards the West are poisonous and deleterious . So with us , those Apples that grow near those places where there is great store of Cabbage , yield a strong and stinking smell . The Reason is , because some Effluvia do exhale either from the Earth , or some neighbouring Plants , which impart some noxious qualities to the Leaves and Fruits of the said Trees or Plants . For it is notorious , that poisonful Trees or Herbs do communicate their venom to Bodies that grow near them . Because the ascending vapors carry always somewhat of the same Earth along with them , from whence they ascend ; and young and tender Plants that grow near to stinking or noxious , are easily affected and infected by them . XV. Plants are endued with the qualities of the Nutriment they take in . Thus we see that the Wine that is made of the Grapes of a Vine that hath had White Hellebor or Herb Mercury grow near it , becomes purgative : And in like manner , that the Fruits of any Tree become Narcotick , Venomous , Diuretick , &c. if their Roots be moistned with such like Juices . Wherefore to make Plumbs purgative , it is a common thing to bore several holes in the Trunk of the Trees , and put into them the Juice of Hellebor or Colloquintida , by which means their qualities are imparted to the Tree . XVI . What is the reason of the degenerating of Plants . It is matter of common Experience , for Plants to grow wild , and degenerate from what they were . Thus a Fig-tree degenerates into the Wild Fig-tree , Barley into Oats ; besides many other such like Transmutations . This degenerating of Plants proceeds either from the negligence of the Husbandman , the situation of the place , or the quantity of the Ambient Air. For Plants grow wild , except they be set in places that are fit and suitable to them , and that they be so cultivated as their Nature doth require . Which tho' it is evident in many Plants , yet in none more than in Violets set or sown for encrease , which if they be not every 3 years transplanted , do degenerate into a pitiful Flower without any scent at all . The Reason of which deficiency is , because the Rudiments of Plants in their first original do require a certain determinate matter , out of which their texture and disposition of Plants must be produced . And forasmuch as such matter is not to be met with in all places , where the Seed is sown , it is no wonder if the Plants in such ground do degenerate and become changed into others . For this change is not made in the Root , but in the Seed it self , whilst it doth not find convenient and suitable matter , or when by reason of old age , having lost its vigor , it must necessarily change its nature . Hence skilful Gardners are wont to make trial of the goodness of their Seeds by putting them into boiling water , which if they be lively and vigorous , will in an hours time begin to sprout . XVII . Why the quarter of Heaven to which the parts of a Plant were directed , is to be observed in the translating of them . Amongst the Rules that are given by the Antients for the setting of Plants , this is one ; that care be had that the Plants removed from one place to another , be set so , as that their parts may answer to the same quarters of Heaven , as they did in their former station . The Reason is , because when the aspect of Trees is changed from one quarter of the Heaven to another , the inward disposition of the parts is changed together with it , and the passages whereby the nourishment is conveyed , are altered , and acquire another situation . For if any will make the Experiment by cutting the stem of a Tree grown in an open Field , with a Sithe , he will perceive several Circles that are broader towards the South , and narrower towards the North. Which cannot be adscribed to any other cause , but to the Heat , which proceeding more copiously from the South , doth more strongly agitate the particles of the Tree , and more extends the Veins of it , than that warmth which comes from the North. And tho' this difference be not to be found in Brazile-wood , all the Circles whereof are Concentrical , and at an equal distance from each other , the Reason is , because in the Torrid Zone Trees receive an equal degree of heat from the North , as from the South . Hence it is that from the position of these Circles some have taught how to find out the Meridian : And the more skilful Gardners and Husbandmen enjoin transplanted Trees to be set with the same respect to the quarter of Heaven , which they had in their former position . CHAP. VII . Of the Nourishment of Plants . I. How the Root grows and is encreased . AS soon as that part of the Sprout which is to constitute the Root , is become such , we perceive presently that it is nourished and encreased as to all dimensions , that is , in Length , Breadth and Depth . The Reason is , because the Juice of the Earth passing through the thin Skin , doth some part of it enter into the Bark , and in part also into the Woody Fibres . Now that which enters into the Fibres , doth by little and little mount upwards , as well by reason of the agitation it hath received from the Sun , or from some Fermentation , as from the circular motion of the Earth ; according to which every Body that is so moved , strives to withdraw from the Center of its Motion . Now proportionably as this new Juice mounts upwards , it must of necessity pass from the Woody Fibres into the Bladders , where meeting with the old Juice , it by commixtion therewith produceth a Fermentation ; from which , as from all other Fermentations in Chymistry , certain concretions are produced , which at the same time do encrease the dimensions of the Bladders and of the Woody Fibres . II. Dunging of the grounds conduceth much to their bearing or fruitfulness To the end that ground may be the more fit to bear Plants , it is dunged before the great Rains begin to fall . For the Barrenness of Vines , Wheat and other Corn is overcome by Stercoration . The Reason is , because Dung abounds with Salt , which being disperst through the Pores of the Earth doth allay the moisture and coldness of it , and promotes growth or germination . For the life of Plants consists in heat and moisture , whereof the one is the Agent , and the other the Patient ; yet sometimes it may so happen , that dunging of ground may do more hurt than good , viz. when there is no moisture to rot the Dung , and dissolve the saline parts of it . Hence it is common with Husbandmen to dung their grounds at such a season , when they have reason to expect there will be copious Rains to dilute it , as before the beginning of Spring , or towards the latter end of Autumn , to the end that the moisture having dissolved the Salt that is in the Dung , it may be conveyed by this vehicle of the water to the inmost pores of the Roots . For otherwise the Corn that is sown will be in danger of being burnt by heat , in case the Salt be not dissolved , or that the surface of the ground be overmuch cumbred with abundance of Dung. And therefore it is PLINY's observation , Lib. 18. That Fields , if they be not dunged , are too chill and cold ; and when over dunged , are burnt up . For there is a great difference between the dungs of several Animals ; for Pigeons Dung is the hottest of all , and next to it Sheeps Dungs , which two are only proper to recover those grounds that are chil'd with over ▪ much cold and crudity . Hogs Dung is of a sharp and biting nature , such as is found in Onions . But the Dungs that are more moderate , and of a middle nature between these , are Horse Dung , Asses Dung and Cow Dung. III. Dung conduceth to the encrease of Plants . By this means the life of languishing , and almost dead and withered Trees is recovered and restored , viz. by laying Dung to the Roots of them . Hence the Grain called Panick ; which is so called from the Paniculae or Beards it is armed with , if it be laid to the lower part of the Root ; it is known to be of good use to promote the growth of the Tree : For being of a clammy and spungy substance , it sucks in the moisture of the Earth , and so furnishing the Root with copious nourishment , it dilates and makes it grow . IV. The stones of Grapes promote the nourishing and encrease of vines . In like manner some tell us , that the Stones of Grapes , laid in great quantities to the Roots of Vines , do greatly conduce to their thriving and encrease : Because these Stones are furnisht with pores suitable to admit the Juice , which serves for nourishment to Vines , which after they have suckt good store of the said Juice , communicate the same to the Roots of the Vine . V. Why Fields that have lain follow , are more fruitful than such as are continually sown . Fallow Grounds , that is , such as are only tilled every other year , are more fruitful than such as are sown continually ; and are the more fruitful , the longer they have been suffered to lie fallow , especially without soiling . The Reason is , because by tilling , the pores of the Earth are opened , by which , as through so many , on purpose prepared passages , the Juice is carried upwards into the Air. Whereas in fallow grounds , the said pores are shut up , and there is no way for the steams to escape . And for the same reason it is , that Husbandmen burn the surface of the Earth , because when the Stubble is burnt after that the ground hath been reaped , d the watry parts fly away , and the solid substance that remains is dissolved by the moisture of the Earth , which by its thickness promotes the fruitfulness of the ground . And therefore VIRGIL tells us in the First Book of his Georgicks , From burning Barren Fields , oft plenty comes , When brittle Stubble crackling Fire consumes ; Whether from this , new force and nourishment The Earth receives ; or else all Venom spent By Fire , and forth superfluous moisture sweats . VI. Why Herbs grow better in a level Field than on hang●ng groun● . A Level Field is more proper to nourish Herbs and Plants , than a hanging ground ; for it is observed , that those which grow in this latter do very seldom arrive at their due magnitude . For seeing that Salt doth greatly conduce to the nourishment of Plants , the same is easily dissolved in a hanging ground , upon the falling of Rain , and is carried downward , without any , or very little profit to the ground . Whereas a plain or level ground , besides that it keeps all the Salt that is laid upon it , for to improve it , receives the fatness which is conveyed to it , together with Rain from other places . Hence it is that some assure us , that Sea-weed being laid to the Roots of Cabbage , do promote their growth , which can be adscribed to nothing else , but to the Salt which abounds in the said Sea-weed , and therefore imparts fruitfulness to the ground . VII . Cucumbers are made tender by steeping their Seeds in Milk. Cucumbers become tender and delicious by steeping their Seeds in Milk before that they be sown . The Experiment might very probably be of use if applied to the Seeds of Artichocks and other Plants , for the taking away of their harshness and bitterness . The cause of this change may be , that upon the steeping of the Seeds in Milk , the Fibres which are formed in the Roots , take upon them such a Figure , and such Texture , as to give way only to such particles which constitute sweetness , and to reject all other thicker Juices . Whence it is that those who endeavour to advance the smell of Flowers , and exhale it by Art , order the Rose-trees to be planted near Garlick , which draws to it self all the nasty stinking Juices of the place , leaving the sweeter and more refined to serve for nourishment to the Rose-tree . VIII . The steeping of Seeds cannot prejudice the goodness of the Plant or Tree that comes from it . Neither need we to fear lest the steeping of Seeds should be any prejudice to the goodness of the Fruit by over-hastning its Ripeness ; since that always depends upon the vigor and virtue of the Seed , which the hasty or slow ripening of it are not able to change . And therefore this Experiment may be extended to all Grains , Seeds , Stones , Kernels , Roots , or any other things that are committed to the ground . IX . Why some Plants grow more swiftly , others more ●lowly . Some Plants grow more slowly , or swiftly than others : For Willows , Vines , Gourds , &c. encrease much in a very short space of time , and more especially Gourds , which grow to that bigness , that according to PLINY's relation , they can scarcely be carried . Whereas on the contrary , the Oak , Medlar , and other such like , admit of very slow encreases . The Reason of this difference is , because the nourishment of Plants depends on their Juice , which from the Roots is driven through the pores , as through so many little veins , which it fills to that degree , that they swell big with it , and are not able to contain all the particles of it . And forasmuch as the sides of the pores are too hard to be extended by the Aliment , therefore it is that their encrease also is very slow , and sometimes that they altogether cease from growing , according as it happens to Old Trees , which receive no encrease from the matter that comes to them , but continue at a stand . But soft Bodies , having pliant pores , and such as are easily penetrable , it is no wonder if the Plants that are so qualified are of swift and great encrease . Hence it is that Gourds grow to that vast bulk in the East Indies , that as SCALIGER saith , some of them are of 13 Palms breadth , and such as a Porter is not able to carry . X. The South VVind favours the growth of Plants . Plants are very vigorous when a South Wind blows , and advance more in growth than when other Winds bear sway . For seeing that the South Wind is warm , and brings many hot Exhalations along with it from the Torrid Zone , it readily opens the pores of the Plants , and causeth the nourishment to mount up more copiously out of the ground , and to be distributed through all their parts . XI . VVhy Plants do not grow in the Winter . On the contrary , Trees do not grow in the Winter , because the coldness of the Season fixeth and congeals the Juices in the pores of the Earth , and consequently deprives the Trees of their nourishment . XII . S●me Trees are set towards the Meridian . Those Trees which delight in the warm Sun , such as the Plumb Tree , the Fig Tree , the Vine , the Apricock , and such like , are commonly set upon a Bank or Wall , facing the South Sun. The Reason is , because a double convenience accrues to these Trees from this position or situation : The first is , that the warmth of the Wall caused by the reflexion of the Beams of the South Sun , doth greatly cherish and promote the growth and fruitfulness of these Trees . The 2 d is , that they keep off the shade : For when Trees grow round , that is , with their Branches spreading circularly , the upper Branches do shade the lower , but being spread against a Wall , this inconvenience is prevented . XIII . VVater is turned into the substance of Plants . The Famous VAN HELMONT put 200 pounds of Earth , dried in an Oven , into an Earthen Pot , and set in it the stem of a Willow of about 15 pound weight . After the time of 5 years he took up the Willow , and found it to weigh 165 pound , whereas the weight of the Earth was not above two ounces diminished , and had only been watered with Rain-water . And in another place of his Writings he tells us , that many Fishes live upon water alone , and particularly supposeth the Salmons to do so . This encrease does not proceed only from the substance of the water , but from the Nitrous and Aerial Ferment , which furnisheth Plants and other Bodies with their nourishment . For whenever a Plant wants this , it becomes altogether unfruitful . For we must not suppose that water is a simple Body , but consisting of many Heterogeneous particles , as may be easily proved from this , that water is subject to putrefaction , which it could not be in case it were simple , and devoid of all composition . XIV . How Fruits become meliorated by graffing . If an incision be made in a Wild Tree , and a Graff taken from a set Tree be Ingraffed into it , by this means the Fruit is meliorated , and of wild and harsh , becomes mild and delicious . And the same happens also , if the Scion be taken out of the same Tree , into which it is afterwards Graffed . The Reason of this seems to be , because the Fibres of the Ingraffed Scion do not so perfectly correspond with the Fibres of the Tree ; and the Juice which passeth from the latter , cannot freely enter into the former ; because the ranging of the pores is changed , and so other ways must be prepared for the conveying of the alimentitious matter : So that by this means the Aliment , as it were , undergoes a 2 d digestion in another Stomach , and the occurring Juices are wrought or elaborated after a new manner . Hence it is that the Fruit growing upon a Garden Scion , graffed on a Wild Tree , becomes meliorated ; because the Alimental Juice , which ascends through the parts of the Plant , having been already digested in the first Stomach , is sent into the second to pass through a second Concoction . And if any body will take the pains to multiply the said incisions , and graff a second or a third Scion upon the first , he will find that by every insertion the Fruit will attain a higher degree of melioration , because the Alimentary Matter , passing through so many different Strainers , is the more exactly prepared , and higher exalted and purified . An Example whereof we have in the History of CORELLIUS a Roman Knight , who , when he at his Country House , near Naples , ingraffed upon a Chestnut Tree a Scion , taken from its own stock , it brought forth a Chestnut , much exceeding the common in goodness , and which afterwards were called from his name Corellianae or Corellian ; and when afterwards a Freeman , whom he had made his Heir , had Ingraffed the same a second time , it did not bring forth Chestnuts in that plenty as before , but much better than the Corellian . XV. A Branch cut off from a Graff , doth not bring forth so good fruit as the Graff it self . But the contrary happens when we cut off a Branch or Twig from a Graffed Tree , and put it into the ground . The Reason is , because this Branch being put in the ground , and taking Root there , doth draw all its nourishment from thence only , which is prepared by one continual percolation or straining : And for this Reason brings forth less and worse Fruits than the graffed Tree whence it was taken ; because in it there is a double concoction of the Alimental Juice , viz. in the Stem or Stock into which the Scion is graffed , and in the Scion it self ; whereas in the Branch cut off from the graff , there is but one digestion or preparation of the Aliment . CHAP. VIII . Of the Germination , Sprouting or Budding of Vegetables . I. How Germination is performed . THE Germination of Vegetables is that whereby the Bark , Leaves or Branches do send forth Buds , Fruits and Seeds , by a propagation of their Fibres . And so in a like manner a Seed is said to Germinate or Sprout , when the outward shell of the Seed is burst open by the breaking out of the Bud which appears above ground . II. VVhy Plants send forth their buds upwards . It is natural to all Vegetables to send forth their Buds upwards , tho' they be sown in a hanging ground ; whereas on the contrary , the Roots of Plants tend downwards , and are but seldom seen on the surface of the Earth . It will not be difficult to give a reason of this , if we consider how the Germination or Sprouting of Vegetables is performed , and by what means the Seminal Virtue presseth through the surface of the ground . For seeing that Germination is nothing else but a kind of Dilatation of a Plant , caused by the entrance of the Juice , which makes it swell , distend it self , and to sprout or break forth upwards : And forasmuch as no Expansion can be without heat , it is evident that the Bud which breaks forth from a Plant , doth proceed from heat , by the impulse whereof it is also carried upwards . For the nature of heat is always to mount upwards , and to drive all the Bodies it meets with , that way . And the reason is the same with regard to those Vegetables which grow on a down-hill : For as fire that is kindled in a shelving or hanging place , doth not follow the declination or declivity of the place , but mounts up directly : So Plants that grow on the sides of Hills , do always tend upwards , as being directed and carried by the heat which always keeps that course . True it is , that for the same reason it seems that the Root also ought to mount upwards , forasmuch as it is likewise dilated by heat , and so it would without doubt , but that it is swayed downwards by its Aliment which is in the Earth , to which it tends . For as the flame of a Torch doth insensibly sink downwards , to feed upon the Wax , and to carry up the same to the upper parts : So the heat which is contained within the Roots , tends to the lower parts of them , where it draws in that nourishment , which it afterwards sends up to the Stem , Branches and Leaves , for their support and growth . III. VVhy moist and watry Fruits are ripe soonest . Watry and moist Fruits , as Pease , Cherries , Goosberries , Currans and Strawberries are the first that are Ripe . The reason is , because the watry Juices are always the first that mount upwards , forasmuch as their smooth and even figures make it easie for them to separate themselves from others : Seeing therefore that Pease , Cherries , &c. contain more of this watery Juice , and are more nourished by it , therefore they must needs be ripe before other Fruit. IV. VVhy Oninions sprout and grow tho' they be not set in the ground . All Vegetables that have round or bulbous Roots , that is , such as consist of Coats or coverings one above another , as Onions , Aloes , Herb Penny-worth , Saffron , Squills , Leeks , &c. do shoot and grow , tho' they be taken out of the ground , and hung up in the Air within doors . The Reason is , because bulbous Plants do not suck their Aliment out of the Earth by the strings of their Roots , as other Vegetables do ; but draw it in from above , viz. that Juice which lies hid in their Bodies , and those thick Coats wherewith they are covered ; whence it comes to pass , that these Roots , being filled with moisture , and containing much alimentitious humours within their Membrans , whensoever the same is excited by heat , they begin to shoot forth . And that this is so , daily experience teacheth ; for when bulbous Plants grow , their Roots are sensibly diminished , because the Juice , which swell'd them up before , becomes by degrees exhausted , and turns into Stalk and Seeds ; as it is evident in Pennyroyal and Orpin , wherewith some Country People adorn their Chimneys , by tying them to little Lathes , on which they grow and continue green for a great while . But most of all is this visible in Housleek , which will bring forth Leaves and Branches 2 or 3 years together , if its Root be only wrapt up in a Linnen Rag dipt in Oyl , and be renewed every half year . V. VVhy some Leaves of the American Aloes fall off , and others grow in the stead of them . It is observed concerning the American Aloes , with indented or saw ▪ like Leaves , that every year some of its Leaves do wither , and as many grow in the stead of them , tho' it be not sprinkled with Oyl , but only wrapt up in a Red Cloath , and so hung up in a Kitchin. The Reason is , because the alimentary Juice in this Plant does continually circulate from the Root to the Leaves , and from them again to the Root . For how else could it be , that the Root continuing undiminished , so much nourishment should be furnished for the production of new Leaves , except the said Juice were continually pusht forwards from the withered Leaves to the Root , in order to a new Production ? VI. How a Rose may be made to bud about November . If the top of a Rose-tree , presently after its budding be cut off , it will bud , and bring forth Roses again , about the month of November following . Which sprouting doth not proceed exactly from the top that hath been cut , but from the shoots or twigs that grow near it . The Reason is , because the Juice which is contained within the Plant , which otherwise would have gon to nourish the top of it , upon the cutting of it off , is conveyed to the Sprigs that grow about it , and from them produces Roses of a late growth . And the same effect will be produced if you pluck the Buds of a Rose , as soon as they are first knotted . Yet it is probable that the budding of Rose-trees may be retarded , by tying a Packthred , or other Cord very strait about the Rose-tree , because this ligature , will hinder the Juice from mounting so soon , as otherways it would . Some Trees have only Branches proceeding from the tops of them , as the Fir , Pitch-tree , Cypress-tree and Cedar ; whereas others shoot forth Branches from all parts of them . The Reason of this different Germination of Trees is from the pores , by which the Alimental Juice passeth from the Root to the Branches ; for if they be strait and perpendicular , the Juice is carried up along through them to the top , where the Juice , by reason of the great abundance of it , is forced to break forth , and to spread it self into Branches . To which also may be added , that the Juice which ascends in these Trees is fat and clammy . Whereas the pores of those Trees whose Branches proceed from all parts of their Stems , are more crooked and winding , by which means the Juice ever and anon breaks forth sideways . Or likewise , because their Juice is not so ropy and glewy , as it is in resiniferous or rosin bearing Trees : Wherefore as a great Fire or Flame which passeth up through a Pipe , with holes on the side of it like a Recorder , doth continually pass some of its parts through the said side holes : So the Juice in Trees being carried up through the pores , breaks forth by all the ways it finds open for it , and more especially through the tender shoots , the softness and tenderness whereof afford it a more easie passage . VIII . VVhy the Leaves of some Trees are always green . The Leaves of some Trees and Plants are always green , as the Bay-tree , the Laurel , Cypress , Ivy , Fir , Box , Rosemary , &c. whereas others towards the end of Autumn lose their greeness , and are spoiled of the Ornament of their Leaves . The Reason of the perpetual verdure of some Trees and Plants is , because their Leaves consist of a more solid matter , and do abound with such hot Juices , that the pores through which they run , cannot be shut up by the cold of the Air. And for this reason it is , that in Brazile all the Trees enjoy this priviledge : And that in Egypt about Memphis , according to the account THEOPHRASTUS gives us , the very Vines and Fig-trees themselves never shed their Leaves , whereas others do lose their Leaves , and continue without them all the Winter , because their Leaves are more soft and tender , and therefore cannot resist the rigor of the cold , which contracts and draws their pores together , and by this means hinders sufficient Aliment from being conveyed from the Roots to the Leaves , which for want thereof , wither and fall to the ground . IX . VVhy tender Shoots are not fit to be graffed . Soft and tender Shoots or Twigs , and whose sides are not yet sufficiently hardned , are not fit to make Graffs of . The Reason is , because in Graffing the Fibres of the Scion must be suited with those of the Stock , that the nourishment which comes from the Root , may have its free passage to both . For their Orifices must so answer one another , that the nourishment may pass from the fibres of the stalk into those of the Scion . Now very soft and tender twigs , because of the tender texture of their fibres , are so bound up and straitned between their Rinds , that they cannot readily take in their Aliment , and therefore thrive but badly , or wither within a short time . For the twig that is to be graffed , must be of a years growth , to the end it may the better cleave to , and unite with the stock . Thus on the contrary dry twigs , or which by reason of their Age or sapless , are also unfit for graffing , because they want moisture , by means whereof both their Fibres might be joined together , and become one Plant. As we see that dry and thirsty ground is Barren , and scarce able to quicken the Seeds that are committed to it . X. VVhy ripe Fruits fall from the Trees . Fruits when they are fully ripe , drop down from the Trees of themselves , and fall upon the ground . The Reason is , because at that time , the lateral fibres of the Fruits do swell , and are no longer able to contain their Aliment ; by which means it comes to pass , that that part of it which was used to ascend to the upper parts , finding no passage , runs downwards again , leaving the stalk by which it was fastned to the Tree dry and sapless . Hence it is that some Fruits fall down with their stalks , as Apples , Pears , &c. others without them , as Plumbs , Apricocks , Peaches , &c. according as the Alimentary Matter fails nearer to , or farther from the Fruit. XI . VVhence it is that Stags Horns fall every year . But the Reason why Stags cast their Horns every year , at a set season , doth not proceed , as some suppose , from the same cause now produced , but indeed from a quite contrary , viz. from an over-great abundance of a volatile saline Juice , wherewith Stags are filled at that time . For this matter continually flowing from all the parts of the Body of that Animal , and pusht upwards towards the Head , thrusts the old Horns out of their places ; and being afterwards condensed by meeting with the cold Air , becomes turned into new Horns , and such as are more tender . CHAP. IX . Of the Decay and Death of Vegetables . I. VVhy Plants dye when they are pluckt up out of the ground . PLants pluckt up out of the Ground do wither ; and tho' Trees that are cut down in the Spring , do seem to bud and grow , as long as they are suffered to lie upon the ground , yet they are no sooner taken from thence , but they by degrees wither and dye . Plants pluckt out of the ground do not wither immediately , because the Juice doth not all on a suddain cease from flowing , neither are the pores so soon changed , but that the Aliment is still for some short time carried to their utmost Fibres . For Vegetables never die , till their Juice stagnates , and is no longer heated and agitated by the subtil matter . For upon the failing of heat all motion ceaseth , and consequently all Germination and Nutrition also , wherein the Life of Plants doth consist . And therefore Plants in the Winter season cannot properly be said to be dead ; because , tho' they produce nothing , and there appears no sensible transmission of the Alimental Juice , yet it cannot be denied , but that it is still in them , because the self same dispositions remain in them , that are found in Living Bodies , and that their condition is very different from those Bodies that are withered and dead . II. How it comes to pass that the Rose of Jerusalem , after it is withered , grows green and flourisheth again . Moreover , it happens sometimes that the parts of Plants , as their Leaves , Sprigs , &c. which have been shrivel'd and contracted by drought , are again , by the return of their Juice and Moisture , distended and displayed , as is evident in the Beards of Oats , and in the Plant called the Rose of Jerusalem ; the Root whereof , when dry and withered , if it be put into luke warm water , immediately distends it self , and displays its Sprigs , and this by means of the moisture which insinuates it self into the pores of the said Sprigs , and so swells and extends them . III. The Juice circulates through the whole Body of the Plant For it can no longer be questioned , but that the Juice hath its course or circulation in Plants , like as the Blood in Animals , as may be perceived more especially in Lettice , Bastard Saffron and the Greater Celandine , in which Plants the Juice never rests , but as soon as their outward Rind is taken away , runs forth continually as the Blood doth out of Animals when a Vein is opened . Besides , the Juice of Plants is not found in them disperst every where throughout their Bodies without any Vessels to contain it , seeing that pipes or passages are found in them , resembling the Veins of Animals . As may visibly be perceived in those Plants , whose Juice is White , Red or Yellow . The Principal Cause of which Circulation is , for that all here beneath , which partake of the Circular Motion of the Earth , strive to withdraw themselves from the Center of their Motion : For therefore it is that the Juice of the Earth , being entred into the pores of the Root , in the which it moves with the more ease than in the Air , endeavours to mount upwards , towards the higher parts of the Plants , and distributes its self to them , according to their several requirings , and that in such a manner , that the remaining crude Portion of the Juice , returns towards the Root , in order to receive there a new and further preparation . IV. Why Oyl is an enemy to Plants . Oyl is very hurtful to Plants , as being always destructive to them , when it reacheth their inward parts . And the same is observed by Chymists concerning Quicksilver , which is deleterious to Trees when ever it enters into the pith of them . The Reason is , because Oyl by its fatness doth so obstruct the pores of the Plants , that the particles of the Alimentitious Juice cannot pass through them : Whereupon the Plants wither and die for want of due nourishment to support them . And Quicksilver is a poison to Plants , because by reason of its subtilty , it pierceth into their inward parts , dissolves the Texture of their Fibres , and introduceth a new disposition of their parts . And when this is done , the Alimental Juice can be no longer strained as it ought , and thereupon the Plant must needs fade and die . V. Why some Winds are hurtful to Plants . Trees sometimes wither upon the blowing of some Winds , and the young Shoots or Sprigs of them grow so dry and sapless , that they may be rub'd to powder with ones hand . The Reason is , because these Winds abound with a nitrous or vitriolick Spirit , which invading the green and tender Shoots of Trees , do blast them with a consumptive infection , forasmuch as the tender strings or fibres which are like the nerves of the Leaves and Sprigs , become so comprest and drawn together by the cold blast of the Winds , that they can no longer take in the Aliment conveyed from the Root . By which means the Trees , being deprived of all their moisture , become dried up , and die . VI. Why the top of a Sprig or Shoot sometimes withers . The top of a Sprig or Shoot sometimes withers , when yet that part which is near to the Stem continues fresh and vigorous . This may happen from several Causes ; either from an obstruction of the pores , or from some knot , or from a dissolution of the twisting of the Fibres : For by any of these means the nourishment is hindred from ascending after its usual manner , and from distributing it self to all the parts : Whereupon when the moisture which was at the top of the Sprig is exhaled , and the way stopt through which other should come to it , it must needs wither and die . VII . How Trees come to die by being bruised or bored . Trees do often wither and die by being bruised , slit , bor'd , or by some other wound . The Reason is , because by contusion the order of the parts of a Tree is disturbed and confounded , and the passages obstructed , through which the nourishment passeth , and is conveyed to the further parts . Whence it comes to pass , that those parts which are above the contusion , do waste for want of nourishment , whilst those that are below it are choaked with too great abundance of it . In like manner Plants die also by splitting , or some other kind of wounds , because in this case , the Alimentary Matter ceaseth from passing through its pores , neither can it be distributed as it was before : And whereas some Trees , as the Pine , Fir and Turpentine , when they are wounded do thrive the better ; this proceeds from the great abundance of their moisture , part whereof being evacuated by the wound , the Plants being rid of that which was their Burthen , bring forth fruits with more ease , and in greater abundance . VIII . Why some Plants perish by Heat , and others by Cold. Some Plants perish by too much heat , especially those that are young and tender , which are not yet sufficiently armed against the injuries of the weather . Others are destroyed by cold , and being seised with the Frost , die . The Reason is , because the life of Plants consists in the temperature of Heat and Moisture , as hath been before-mentioned ; so that moisture cannot continue long in a Plant without a mixture of heat ; nor heat without moisture . Wherefore when either of these doth predominate , and destroy its compeer or fellow , the Body must of necessity die , and be deprived of Life . Young and tender Plants therefore are much sooner than others destroyed , because the outward heat does easily penetrate their tender Bodies , and by putting their parts into too vehement an agitation , doth extract and consume the moisture , not only out of the Stem , but out of the Roots themselves : And forasmuch as the loss thereof cannot be restored from out of the Earth , because it is likewise parcht up with too much heat , the Plants must needs wither and die . Others again do perish by over-hard Frost , which by locking up and contracting the pores , drives away the heat ; whereupon the motion of the Alimentary Juice ceaseth , so that the nutrition , and consequently the growth of the Plants must in time cease also , and all their vital functions be interrupted . And for the same reason it is , that Plants are often killed by Winds , which if they be very hot , do open and widen the pores , and exhaust the hidden moisture : Whereas when they are cold , they compress the pores , and by expelling the heat , do weaken and waste the natural strength and vigor of them . IX . Why Wild Plants are longer liv'd than th●se which grow in Gardens . Wild Plants , and such as grow on Mountains and Hilly Places , are of longer continuance than those which are cultivated in Gardens . The Reason whereof seems to be this , because the Plants which grow in Gardens , are frequently overcram'd by the abundance of Alimentary Juice , which does extinguish , or at least weaken their natural heat . For since the design of Gardning is to bring forth goodly and early Ripe Fruits , the Gardner makes it his whole business to make his ground fat and fruitful ; and is not at all concerned that his Plants be strong and long lasting , so they do but thrive and bring forth abundance of Fruit. Now it is certain , that the pores of Trees are widened by the too great abundance of the Alimentary Matter , and an easie way being thus made for the vital moisture to escape , the heat must needs vanish together with it . Another thing that shortens the Life of Plants is , because the dung which is made use of to improve them , lies round about them , and that not far from the surface of the Earth ; and by this means it happens , that they do not strike down their Roots so deep in the ground , as otherwise they would : Whereas the Plants that grow wild in the Fields , being surrounded with more hungry and dry Earth , where they meet with but little moisture , sink their Roots deeper into the Earth , to provide themselves a sufficiency of sustenance , and by this means grow much stronger , and more able to resist all outward injuries , and consequently endure longer . For it cannot be questioned , but that the spreading and thickness of the Root conduceth much to the lasting condition of Plants . X. Why hot Water destroys Plant● Hence it is that Gardners observe , that those Plants die within a short time , that are watered with hot water : For tho' by this means their growth for the present seem to be promoted , and it makes their Fruits to be ripe the sooner ; yet because the Fibres of the Plants , by this unaccustomed heat , are too much relaxated , and so take in too much Moisture or Juice , they are either quite choaked by the too copious affluence of the Alimentary Juice , or else their pores become obstructed by the bigness of the particles that come thronging in into them . XI . Why too cold Water is hurtful to Plants . And as it is of ill consequence to Plants , if they be watered with hot water , so neither doth too cold water agree with them . And therefore skilful Gardners take care to set the Spring or Well-Water they make use of for th● watering of their Plants , in the Sun , that the coldness of it may be somewhat temper'd and allay'd , for fear otherwise it might be prejudicial to the growth and thriving of them . Book . 2. Part. 8. Chap. 1. G. Freman . In. I. Kip. Sculp To the Right Worshipfull Sr. William Hooker of Greenwich in the County of Kent , and of the Citty of London Knight , and Lord Major thereof Anno Domini ●673 . This Plate is humbly Dedicated by Richard Blome . The Eighth Part OF THE HISTORY OF NATURE . OF ANIMALS . CHAP. I. Of Animals which are commonly supposed to be of a Spontaneous Birth . I. Whether there are any Animals produc'd without Seed . THERE is nothing more vulgarly taken for granted among Authors , than that certain Animals , particularly Insects , are generated without Seed , as Bugs and Lice out of Human Excretion and Filth ; Book-worms out of Books , Wood-lice out of Wood , Moths out of Garments , and innumerable others , which , as they say , breed and are produced without Copulation of different Sexes . Some Physicians who pretend to be the only Inspectors into things of this nature , because they discern not with their Eyes , nor can any way comprehend the Causes which produce these Animals , call the formation of them Aequivocal , as if they sprang from different Principles , and their production had no manner of agreement with that of others ; whereas indeed their Generations , by the same right as other Generations , are to be called Univocal ; since they are effected by the same necessity , and no less than others , require a praevious Seed and requisit Dispositions therein . For whatsoever in Nature is produc'd , proceeds from Seed , and nothing in the Earth is generated by Chance , or contrary to the Course of Nature . True it is , that that sort of Seed is chiefly internal , and not always appearing to the sight ; but that there is such a Seed latent in those Bodies , is not to be denied , since we find that Lice , Bugs , Maggots , &c. are curiously wrought and formed , each in their kind , and exactly agree among themselves in similitude of parts . For there is nothing wanting to their perfection ; and they may be said to be no less compleat as to their internal , than external parts . For who can imagine , that so great a variety of Members , so exact a Form of each , so wonderful a proportion and contexture of parts , should fortuitously , and by an accidental Concourse of Atoms be produc'd , and that there should not rather be some necessarily determined Seed to bring them forth ? For if we allow , for Example , that Daws among Birds , or Cats among Beasts , are produc'd of Seed , as being too elaborately fram'd to be compos'd by an uncertain Agent , why may not the same thing be judged of other Animals , when as we may observe in them a Structure no less exact and curious , and Parts no less correspondent each to other ? II. Every Animal is engendred of Seed . But some Philosophers suppose , that Bugs , Lice , Maggots , and such like Animals are generated , while many seminal particles , as they call them , being agitated by a subtle matter or heat , are so disposed as to compose or constitute certain convenient Figures and Organs . For this motion , as they say , not rashly and by chance , but according to the Laws of Nature , and its Seminary Virtues proceed out of an aptly and well-disposed Matter , and determinated Heat ; whereby it comes to pass , that the parts of the Matter so exagitated , not only conduce to the formation of the Heart and Veins , and the union of them with the Arteries , but also to compose the Principle of the Brain , the Sensory and Motory Organ of the Fibres , Nerves and Spirits , which things being first laid as a foundation , a farther progress is made to the forming of the perfect Instruments , those namely which contribute and are inservient to Sensation and the Local Motion of the Body . III. Of the breeding of Ducks or Geese from Trees in Scotland . To this production of Animals may be referred that which HECTOR BOETIUS makes mention of in his History of Scotland , namely , that on the Sea-side in some parts of Scotland , there is a sort of Bird ingendred of a certain Tree , that is , of the Fruit of it falling off and dropping into the Sea. The same thing or the like , he reports to be on the Sea-costs of the Hebrides Islands , where such a strange kind of Production is said to be brought about two manner of ways . The one from Ships , or old Planks and pieces of Timber , which being left upon the Shore , and there remaining some time , breed from their corruption certain Worms or such like Insects , which discovering first Feet , then Wings , lastly Plumes , come at length to bear the similitude of Ducks or Geese , and like them take their ●light up into the Air. The other is a Hatching as it were of certain little Birds out of Excerscences ▪ ●ike Snailes , Cockles , or some kind of Shel fish sticking to the Sea-w●●d that grows in those parts , which are therefore supposed to proceed from the Fruits of Trees , because they are chiefly hatcht about that time , in which the Leaves or Fruits of those Trees that grow by the Sea-side appear and d●op● into the Sea. And indeed if Fruits hanging on a Tree can bread Worms , Maggots and such like Insects , why may there not as well out of the same Fruits be bred such Animals , as like other Birds take wing and glide to and fro in the Air ? IV. Fishes engendred of Dew . I have been informed by Men of very good Credit , that if a Hurdle be plac'd over any water , whether a running Stream or standing Pool , and dewy Turfs be so laid upon it before Sun-rising , that the Hearby-side may be turned downward without shaking off too suddenly the drops of Dew ▪ so many drops as afterward● upon the Sun-rising , and heating the Turf shall fall into the water , so many Fishes will be ingendred of them , and various , according to the diversity of the Herbs on which the drops of Dew ●ate . Upon the truth hereof a certain Famous Man infers that from Lakes , Rivers , Seas , Fishponds , and all places in general , disposed to the ingendring of Fish , there are Seeds variously exhal'd , being conveyed through the Air , mixt and incorporated with the Dew , and falling upon the Herbs , are so cherish'd by the Spirit of them , and acquire such a disposition from them , that being receiv'd into the water , they are there form'd into these Fishes . In the same manner as from the Dew lying upon the Leaves of Nightshade , and warmed by the heat of the Sun , are ingendred Worms , as SCALIGER affirms ; and as in Chili , a Province of South America , there grows a Tree , from whose Leaves small Serpents are said to fall . V. All Animals whatsoever are generated from the Egg. Now , tho' it hath been from Antiquity to this day the general opinion , that divers Animals , particularly small Insects are produc'd only by corruption ; It is of late plainly evinc'd to the contrary by many Experiences . For besides those which I have quoted in my Institution of Philosophy touching Insects , we see that Butterflies by Copulation , produce an infinite number of Eggs , from which are hatcht Canker-worms of all sorts . Whence we may conclude , that all those Animals which are thought to be spontaneously ingendred , which are found in Cheeses , Fruits , and other sorts of Food , proceed from real Eggs , or at least from something equivalent to the Seed that comes from Females after they have been impregnated by the Company of the Males . VI. How Serpents have been generated in a Mans Brain . But HOLLERIUS in his 10 th Book De Morbis Internis , Chap. 10. makes observation of a Scorpion bred in the Brain of a certain Italian by the frequent smelling of the Herb Basil . And RAIMUNDUS in his Mercurius Italicus affirms , that he found by experience , that the foresaid Plant , plac'd under a Stone in a moist place , within two days produc'd a Scorpion , which much at the same time , while he resided at Siena , a very rare and memorable accident confirmed . A certain Gentleman of Siena , wonderfully taken and delighted with the smell of this Plant , used frequently to snuff up into his Nose the powder thereof dried , but highly to his cost , for in a short time he died Mad ; whereupon his Skull being open'd by a Surgeon , a Scorpions Nest was there ●ound : And this might possibly be , in regard the Scorpion , being delighted with the smell of that Plant , creeps with a great desire to it , lodges in it , and haply feeds upon it , and may chance also 〈◊〉 lay its Eggs in its Leaves and Buds : Whence 〈◊〉 might easily happen , that the foresaid ▪ Gentleman might , together with the Powder snuff up into his Nostrils some of the Scorpions Eggs , which cherish'd by the heat of the Head , might well enough hatch young Scorpions . VII . Locusts bred of the Seed of Flies . So the Ukrainians are mightily infected , especially in a dry Summer ▪ with swarms of Locusts , by reason these sorts of Insects , before they expire , leave each of them behind them 2 or 300 Eggs in Autumn , which afterwards by the next Summer● heat are hatcht into Locusts , which unless they be swept away by the following Rain , or driven by the Northerly Winds into the Euxin Sea , spoil all the Corn , and inflict vast damages upon those Provinces through which they travail . Some there are , who , by diligent observation , have made this remark , that never any Insects are generated of the Flesh of Beasts or Fish , except they have been first Fly-blown , or tainted with the Seed of Flies ; and consequently that Vermination in Flesh proceeds only from Flies , altogether like to those which afterwards breed in Flesh . VIII . Bees generated out of Heifers . VIRGIL in his 4 th Book of Georgicks affirms , that from a Heifer of two year old , having its Nose stopt , and being beaten to death , its Bowels , after it is killed , being spread over its whole Skin , Bees are generated , provided this be done about the beginning of the Spring , and before Herbs shoot forth into Flowers . This , ( as we suppose ) may very well be , in regard the Heifers about the beginning of the Spring , feed upon Thyme and Cassia , which soon after shooting forth into Flowers , contain little Eggs , which being agitated by heat and the subtil matter , are dilated , and at length are delivered of these little Animals . For what the common belief is of most men , is absolutely false , namely , that Bees are generated out of the corrupted Carcases of Oxen. However this seems more likely than that exterior Causes should be able to meet so opportunely , as to build or frame Organs of Animals , such , as whose fabrick or structure can be comprehended by no human understanding unless perhaps some Seminary and Plastick Virtue lie hid in the said Bodies , which being scarce credible , it seems a much greater probability , that all Generation is univocal , and that almost all Animals are procreated by others of the same kind . IX . Animals discovered in a mixture of Pepper and Water . And much after the same we may determin concerning Animals discovered in water , wherein Pepper hath for the space of three days been infused . For altho' they are too minute to be well discerned by our Senses , yet they are fram'd with so great and almost infinite variety of Organs , that they must needs be allowed to be the progeny of others of that kind , and most likely it is that their Eggs have lain hid in the Pepper . X. Worms bred in Fruits . Worms are generated in Fruits ; and Flies which are so numerous in Summer , cannot be produc'd by any act of Generation , since the whole race of Flies being destroyed , there can be none surviving to produce others . Worms are bred within the Pulps of Fruits , not spontaneously , as if there were nothing in the Fruit before , from whence they may be generated , but from a premised Seed , that is to say , while Bees or Flies , sitting upon Flowers , leave behind them certain little Eggs , which being intercepted within the Fruits , are disclosed by the urging heat , and turn into Worms . Thus Fruits and Herbs breed Worms , when they are exposed to the Air ; and sometimes in one and the same Plant , divers sorts of Insects are to be seen : But if any Plant be inclosed within a Vessel , and the said Vessel be kept close stopt , so that the Air can have no access , no Worms will there breed from any putrefaction ; nor is Cheese capable of breeding Mitcs , if kept in a Glass Vial well stopt and Hermetically sealed . XI . Flies are generated of other Flies . So Flies are not bred spontaneously , but by a premised copulation , and of Eggs laid , which being promiscuously dispers'd in the Earth , and afterwards cherish'd by vernal heat , are deliver'd of the respective Animal : For if PLINY may be credited , Flies , as also Ants , Beetles , Bees , Spiders , Wasps , and other such like Animals generate by commixture or copulation ; and this is chiefly to be prov'd by this one Argument , namely , because some years , Flies , Locusts , &c. are more abundant than others , make greater waste and havock in the Fields , and more infest Mankind , which certainly can be from no other cause , but for that in a mild Winter they were preserv'd and not destroyed by the coldness or moisture of the Earth . XII . How Worms breed in the Maws of Infants . Wherefore by no means can we assent to those Peripatetick Physicians , who affirm that Maw-worms are bred in the Intestines out of putrefaction , by the means of Heat ; as in like manner they assert of other Insects , that by the heat of the Sun they are produc'd out of Horses , Cows or other Animals Dung. But it may more probably be alledged , that the Maw-worms have their production from the little Eggs of Insects swallowed down by Children with their Meat . For our Meat cannot be so exactly preserved , but that it may by some way or other be contaminated by invisible Insects , which continually fly up and down in the Air. And whereas the meats swarming with those Eggs , are conveyed into the stomach ; the said Eggs by this means remain entire , and being cherish'd by a gentle heat , are at length delivered of these Worms : And for a clear demonstration hereof it is to be observed , that Children during the time they suck , are never troubled with Worms , nor are they in the least subject to this Distemper , till they come to feed upon more solid meat ; whereas before they immediately drew their nutriment from the Breasts , in which none of these little Eggs could harbour . But when they come to feed upon external nutriments , they are then more exposed to the breeding of Worms , because the fermentations in those nutriments are not powerful enough to destroy the Eggs. XIII . That some Fies are viviparous ALDROVANDUS in his first Book of Insects affirms , that some Flies are viviparous or capable of bringing forth living Flies : I took , saith he , when I was young , being entitc'd by the specious form thereof , one of the bigger sort of Flies , streakt with several white Lines ; which when I had kept some time in the hollow of my hand , I perceived at last proceeding from it , certain small white Worms crawling up and down . And tho' he speaks but of his catching one only Fly , which had Worms living and moving within her womb , yet it may easily be imagin'd , and inferred that the rest of that kind are also viviparous . XIV . Whether Mares may be impregnated by the Wind. Some Animals become pregnant by the wind , as PLINY relates of Mares in Spain and Cappadocia , in his Eighth Book , Chap. 42. It is certain , saith he , that in Portugal on the Banks of the River Tagus , near Lisbon , there are certain Mares , which turning their Face to the West-wind , when it blows , conceive thereby an Animal Spirit , which proceeds to a Birth , that is brought forth into the world with wonderful ease and expedition , but retains not life beyond the term of three years . This the Ancients gave credit to , but I fear , not upon so exact examination and enquiry , as a matter of this nature requires ; since sure enough it is that Generation cannot be effected without the coition of Male and Female , unless perhaps that which they call Hippomanes , be taken for a Birth , that I say , which Mares , while they are exposed to the wind , emit . I have ask'd some Portugueses whether or no it were true which some Ancient Authors have delivered concerning the fruitfulness of the Portugal Mares , and whether any sort of Wind was so efficacious as to deserve to be termed a Father of Living Creatures . Of these persons , some professed themselves totally ignorant of the matter ; others , whom the reading of Ancient Authors had incited to a more narrow search and enquiry into Antiquity said , that they had heard indeed that Mares sometimes bring forth certain mishapen and formless Masses , or lumps of Flesh , having nothing of resemblance with the shape of a Horse , or any other Animal : But this happens very rarely , and that too , only when they are high fed , and raging with desire of Copulation , are kept from the company of the Male. Whence we cannot but admire that PLINY , COLUMELLA , and other Accurate Writers of Natural Causes , should make mention of this strange sort of Geniture , which neither they themselves had observed , nor could warrant the truth thereof to the World by any sufficient Testimonies ; except we compare this opinion of theirs concerning the fruitfulness of those Mares , and their celerity of Birth , with some conceits of Justine the Epitomizer . XV. Vulturs falsly given out to conceive by the Wind. Nor is it with less incertainty , that AELIAN in his 2 d Book of Animals , asserts the Conception of Vulturs by the Wind , and their exposing their hinder part to the North-wind , to be as it were trodden and impregnated by the said Wind , since among Vulturs there is known to be a Male and Female , by the conjunction whereof Generation is produc'd , according to the common direction of Nature . Moreover , their Neasts are discovered , and they are known to couple at set times of the year . Nor signifies it any thing to say , that some Animals lay Eggs , which from the Wind are called Hypenemious or Subventaneous , that is to say , indeed Wind-trodden Eggs , as Hens , Partridges , &c. which before such time as they have experienc'd Coition , emit those subventaneous Births : Since these sorts of Eggs are barren , smaller and more liquid than those , which being produc'd by Copulation , are capable of faecundity . Nor can the liquor of them by any brooding of the Hen be brought to thicken , but still remains what it was at first . XVI . The Pyraustae breed in flames of fire . In the Brass Fornaces in the Isle of Cyprus , where the Stone Chalcites being cast in , is many days a burning , there spring up on a sudden in the very midst of the Fire , certain little winged Animals , called Pyraustae , somewhat bigger than great Flies ; which nimbly run and frisk up and down in the fire . ARISTOTLE makes mention of them in the 5 th Book of his History of Animals , Chap. 19. These Pyraustae breed not of the simple substance of the fire , but out of Eggs left by this kind of Animal in the Stone Chalcites ; for I cannot but perswade my self , that this Chalcites in the Mines is condenst out of a certain Juice , from which , as from a kind of Vehicle , certain Eggs , apt for the generating of these Pyraustae , proceed out of some Vegetable Body ; so that in fine the Pyraustae themselves are procreated out of these Eggs , the fat humour being mixt to the Metallick Matter , and thereupon live unhurt in the fire . In regard such is the temper of the Matter whereof they consist as long to endure the fire , and like Adianthum to elude the strength of the flames . St. AUGUSTIN in the 21 st Book of his Teatise De Civitate Dei , mentions also a sort of Worms found in bubling Streams of Water , so hot , as not to be touch'd without scalding . XVII . A certain sort of Wood incombustible . TORNIELLUS in his Book of the World , takes notice of a light kind of Wood , and to all outward appearance combustible , said to be brought from the Mountains of Java , whereof a small portion hath been cut off with a Knife , and cast into a large Coal Fire , and not been consumed , nay , not so much as lighted , impaired or diminished ; but being taken out , hath appeared as if it had never been cast into the fire . XVIII . The vulgar opinion of the Salamander . And altho' the same thing be vulgarly reported of the Salamander , yet I dare not maintain it as a compleat truth , since most certain it is , that at Rome a Salamander being cast into the fire by Corrini , a Roman Knight , immediately swell'd , and sent forth a fat thick matter which quench'd the Coals , and by repeated vomitings endeavoured to defend himself from the cruel Ardours of the fire . XIX . Some sort of Linnen which no fire consumes . LEMNIUS saw , as himself attests , Mantles Knit or Woven of a certain incombustible sort of Flax which yield not to the fire , and are invincible to the hottest flames ; insomuch that if at any time these Clothes come to be sullied , or contract any thing of Soil or Spots , there is no need of Soap or Lie for the taking out of these Spots , but the Garments are thrown whole into a great fire , and immediately become all in a blaze as if bedawb'd with Grease ; but being taken out , they are fresh , and cleansed of all their Spots . The same sort of Plant is said to grow in the Desert and Sandy Parts of India , whereof some Stocks , acquire from the condition of the Soil , and quality of the Ambient Air , such disposition as to be capable of being woven into Linnen . CHAP. II. Of Animals produc'd of Seed . I. Whether Whitings and such like Fishes are of one Sex only . SOME Animals are thought to be of one Sex only , and to Generate and bring forth without the Male , as ARISTOTLE in the 11 th Chapter of the 4 th Book of his Natural History , relates of Rochets and Plaice among Fishes ; which when they are taken , are found to have Eggs. The same thing is affirmed of Oisters , and some other Shell-fish , that they are impregnated with their own proper Seed , and that they breed and bring forth their like without Natural Coition . Those that stand up for Aristotle and right or wrong defend whatsoever hath been wrought by him , admit , without the least difficulty , this assertion of his , because ●e Judges so , Writes so , and will have it so : But we who prefer Truth before Aristotle , and think nothing fit to be received which is not consentaneous to Reason and Experience , reject his Assertion as Fabulous , as having conferred with Men of undoubted Credit and Reputation , who affirm that they have seen Rochets without Spawn , and Plaice , Male and Female , in conjunction together . And indeed it is utterly repugnant to Reason , that any Animal should procreate by it self , and propagate its Species without the help of another . So that I am apt to believe that Aristotle delivered not this to be his Sentiment , as totally relying upon his own proper Judgment or Experience , but rather by suffering himself to be led aside by the Credit of those Fishermen whom he had hired to discover to him the Nature and Properties of Fish . The same may be said of Oisters and such like Shell-fish ; since there are many who affirm that they have seen Horn-fish and Purples in Conjunction each with their kind : Nay , and that they have observed their Meeting at set times of the year to perform the said work of Generation . II. That Children sometimes inherit the defects of their Parents . Women that are maimed or deprived of one or more Limbs , sometimes bring forth Children affected with the like Mutilation , as that Woman mentioned by GASSENDUS , who having formerly brought forth many Children perfect and intire , afterwards when she had lost one of her Fingers , brought forth several Children , in like manner , deficient . Sir KENELM DIGBY gives us a Relation of a certain Woman whom he saw in Barbary , who having two Thumbs on her Left Hand , was attended by four Daughters , whom she brought forth thumb'd in like manner . Ancient Physitians generally alledge one main cause of these and the like effects , namely the deflux of the Seed from all parts of the Body : Forasmuch as since the Blood is carried by a perpetual motion through the Body of the Animal , it is not to be doubted but that the subtil part thereof adapted to Generation , by passing through all its parts , is concocted by every one of them , and affected in a certain peculiar manner , so that it partakes of the qualities of each , and carries them along with it to the Heart , whereunto it tends ; and where it is separated from another more gross part , and laid up in receptacles appointed by Nature . And this , say they , is the Seed which every Animal makes use of for the Generation of others like it self . So that if it chance that the Animal from which that Spermatick Matter is drawn , wants any Limb or Member , no virtue of the said Member will be in the Blood , and consequently the Birth will come forth maimed , or destitute of some part or parts . Or if any part or parts in the Annimal exceed , as Sir Kenelm relates of the African Woman , or there be any exuberance or excrescence of Flesh , the same deformity will be also concomitant to the Birth , unless this redundancy be temper'd by the Seed of the other Parent , or the superfluity of the Blood be corrected . III. Defects , Diseases and Vices of Parents entailed upon their Children . And for the same cause they say it is , that they who are troubled with the Gout , Epilepsie , Leprosie , or any such like contagious disease , impart the same to their Births : Especially the Mothers , since they afford them Aliment , and together with the Blood , the habit of Body , as they likewise communicate the manners and dispositions of the Mind . Hence commonly it falls out that lewd and drunken Women bring forth Children of the same temper and like themselves entailing their vices on their Offspring . IV. How Children come to be markt with their Parents defects . But as in Fruits it may possibly be conjectur'd , that the Buds and Efflorescences have been form'd in their original exemplar from the beginning of the world ; so the like is to be inferr'd in the production of all Animals ; and tho' it may seem very difficult to comprehend how the form and features of Parents are imprinted in the Births ; yet if we seriously consider it , we shall find it not so hard a matter to conceive as we think , that the figure of a Body so small , and so flexible as is that of an Embrio , may be diversly modified , whether it be by the Bodies which serve to extend and enlarge it , or by those which close or compress it , or by the imagination of the Mother which hath power to remove the humours , and consequently to cause them to flow towards some parts rather than others . For when they fail to bend their motion towards some parts of the Infant , then it is that the Infant is born with the Defects of the maimed Parent . V. How Exuberances or Additions of Parts happen . And on the contrary , if it happen that they have exuberances or more parts than belong to a compleat Birth , as two Heads , or the like ; this addition of parts may be attributed to the meeting of two Eggs hitting together , or whose parts have been disordered , intermingled , or crusht together through the motion of the Humours , several ways , by the imagination of the Mother . VI. The Cause of Womens Barrenness . Some Women are undoubtedly barren and uncapable of ever bringing forth Children , and the reason is evident from things already discourst of in our Institution of Philosophy ; namely , that every Egg , in its proper receptacle , that is , the Womens Testicles is rendred fruitful by the Virile Contact , that the Egg thus faecundated or fructified , increases daily more and more , and is at length shut up in the Womb , and is there , as it were , ripened with heat , till such time as it hath received all its Lineaments . So that Women are Barren when their Eggs are either intemperate , or hardned , or wrapt in a Membran too thick to be fermented by the touch of the Virile or Male Seed ; or because their Eggs are too small or juiceless , so as to contain little or nothing in them , or else because their whole Bodies are intemperate or full of gross humours , or are over fat , or because they are troubled with the Whites , or have their Courses too much . But of all others , the chief cause of Sterility is said to consist in the obstruction of the Fallopian Tubes , since if these chance to be obstructed , the Seminal Spirit cannot reach the Ovary to fructifie it . VII . Women deprived of the usual benefit of Nature , are barren . Women , whom the Monthly benefit of Nature fails , are barren and void of all faecundity . The Reason is , because at such a time the Vessels being obstructed , the passage is rendred uncapable to transmit the Genital Air to the Ovarium . Whereas Women , when their Courses begin , and more especially when newly over , are sooner impregnated and conceive , because the Womb is moist with a certain roscid humour , and more easily attracts and retains the Seed . VIII . When the Menstruous Fluor begins in VVomen . Women have not their Courses at the same time in all Countries . In very hot Climats , for the most part , the Profluvium begins in the 7 th or 8 th year : So the story goes of an Indian Girl , who was married at seven years old , and at eight brought forth a Boy . In temperate Regions at 12 or 14 ; in cold Regions seldom before the 16 th or 18 th year of Age : In persons very young these Fluors break not out , both in regard the Blood is for the most part taken up in the nutrition of the Body , as also because the Blood is not sharp enough to open easily the Mouths of the Vessels : In Women growing into years it ceases , in regard the Blood thickning for want of due fermentation , is not so fluid as in the strong and youthful . IX . VVhether She Mules are barren , and for what cause . She Mules are generally accounted barren and uncapable to bring forth their like . The Cause of this sterility in Mules , Modern Physitians attribute to the want of Eggs in the Womb. For STENO , who first discovered and made publick the Ovary in Women , affirms that Mules have indeed Testicles , but are destitute of Eggs , and therefore no wonder they are so barren , since they have not like other Animals , Eggs in those Testicles . However some there are that question this Tradition , and assert that she Mules are not altogether barren , since there have been Mules known which have brought forth ; particularly there was one of late in Auvergn that brought forth a young Mule. And PLINY quotes Theophrastus his Testimony , that Mules in Cappadocia bring forth not only those that are generated of a He Ass and Mare , but also such as are begot of Mares , and wild Asses , tho' this seldom happens by reason of the great difference of parts which constitute the Womb of a she Ass , and those which constitute that of a Mare ; forasmuch as the Asinine Birth possesses those Caruncles , Placents and Zones which the Equine Birth is destitute of . Wherefore it must needs be , that whereas a She Mule partakes not of all those parts , she cannot but be barren , unless some extraordinary accident happen . XI . A too frequent effusion of Seed hurtful to the Brain . Overmuch effusion of Seed is very hurtful to the Brain and Nerves , and creates an extraordinary weakness in them , as those persons by experience find , that too much indulge to Venery . HIPPOCRATES was of opinion , and to this day it is the belief of many Physitians , that the Genital Humour is derived from the Brain into the Spermatick Vessels , whereof when ▪ ever there is any evacuation made , the Brain must of necessity be weakned . But since there appears no peculiar Channels from the Brain , which can convey the foresaid humour to the Spermatick Parts , it is most consentaneous to reason , that this noble humour is generated out of the mass of Blood , or as others will have , out of the Nutricious Juice and Animal Spirit well compounded , whereof some part is no less diffused to the Genitals than to the Brain . But that the overmuch wastings of the Genital Humour should endamage and weaken the Brain , that arises from hence , namely because the Blood to repair the spent Seed , puts the Brain to the expence of its most subtil part to supply the Spermatick Vessels with a sufficient quantity of Animal Spirits . Nay , when the Blood out of its own substance cannot contribute sufficiently to the Genitals , it claims of the Brain a Grant of new matter formerly borrowed on purpose . XI . Children generally resemble one or other of their Parents . Children most commonly are like to one or other of their Progenitors , and sometimes resemble both . Some Women have the resemblance of the Grand Father , Great Grand Father , or some other of their Ancestors . As that Graecian Woman , mention'd by PLINY , being accused of Adultery because she had brought forth a Black , was acquitted and judged innocent when it appeared that she was but the fourth degree removed from an Aethiopian Ancestry . It is a common opinion of ancient Physitians , that if the Womans Seed abound , the Birth becomes like the Mother ; if the Mans Seed predominate , it is most like to the Father ; but if there be an equal proportion on both sides , that then there is a resemblance to each party alike ; and to this purpose and almost in the same terms LACTANTIUS expresses himself . XII . The Reason of the resemblance of Children to their Progenitors . But I rather think , as I said a little before , comparing the Germination of Plants with the Production of Animals , that the resemblance of Children to Parents , is not caused by the exceeding quantity of Seed , either of the one or the other Parent , but rather because the Seed of the Male , making way into the Pores of the Eggs , opens them in such a manner , that they are more disposed to receive the matter whose particles resemble those of the Male Seed than to admit of others , by reason whereof the particles , which make up the composition of the Infants Body , rank themselves in such sort as those are rank'd which compose the Fathers ; and this is the true cause of Father and Sons resembling each other . The same reason may be given of Infants being born with a resemblance to the Grand Father , or any other Ancestor , whom neither Father nor Mother ever knew . For it may easily be conceiv'd , that Ancestors may possibly have imprest in their begotten Off-spring such sort of dispositions , that the parts of their Seed cause in the particles of the Eggs those particular structures which are proper to produce in the Birth a Figure modified rather one way than another . XIII . VVhence it is that some Children are born Lame , others Gibbous . But some will say , if Infants are thus inclosed , and as if it were fenc'd about in Eggs , how comes it that some are born Lame , others Gibbous or bunch backt ? This happens when the Infant is so streightned in the Womb , that all the parts cannot grow proportionably ; whether it be that that the Womb is too little , or because the parts of the Birth are diversly affected by some exteriour cause . For by this means the Infant must needs be out of order , that is , must have some Member greater or smaller , or otherwise dispos'd than the natural construction of the Body requires . XIV . How it tomes to pass that sometimes VVise Men beget Fools . Hence it is that wise men oft beget Changelings , or Children of little or no understanding : Because having their minds imployed in subtil inventions , or some serious points of Learning or Art , they little mind the Sports of Venus , and are very slack and indifferent in the performances thereof . On the contrary , those that are eagerly bent upon the Act of Generation , for the most part beget Children of like Affections , Manners , Studies and Inclinations of Mind . For those Children in whom vigour of Soul and Vital Spirit is infused from the faculty of the Seed , cannot but be of the same Disposition , Nature and Temperament with their Progenitors . XV. VVhence it is that the VVomen of Holland bring forth Harelipt Children . The Matrons of Holland by looking earnestly upon a Hare , oft-times bring forth Children with the Upper-Lip divided , or as we commonly call them Hare-Lipt . In like manner , some have Flat Noses , Wry Mouths , Blubber Lips , and a habit of Body , all over deformed . The Reason is , because Women in the time of their conception or going with Child , have many times their Eyes , Thoughts and Fancies strongly fixt upon some or other misshapen or ill favour'd sight : For such is the force of Imagination , that when a Woman Locks or Thinks upon any thing very earnestly , she commonly brings forth some thing very nearly resembling the thing so seen or thought on . So a certain Woman not forgotten in story , who having cast away all shame , while her Husband was absent , and prostituted her self to another person , brought forth a Child no way like to the Gallant , but the very Picture of her absent Husband : The cause whereof is Elegantly and Wittily described by Sir Thomas More in one of his Epigrams . XVI . VVhence it is that Children are brought forth like to the things beheld . The like is related by GALEN , namely , that a certain Woman brought forth a Child not at all like the Father , who was naturally deformed in Body , and of an ill-favour'd Visage , but to a fair Image or Picture which her Husband had often desired her frequently to cast her Eyes upon . And PORTAEUS makes relation of another Woman , who delighting as it were by a natural propensity , to have frequently in her sight , and oftner in her mind a Statue of Marble representing a Fat Boy , brought forth a kind of Man Child Pale and Wa● , and indeed wholly resembling the said Statue . Nor is this peculiar only to Human Race , but common also to Brute Animals , of which more in the following Chapter . XVII . How Twins are generated . Whence it is that Twins are brought forth at one Birth . Ancient Physitians were of opinion , that the Womb is distinguisht into so many Cavities or Cells , divided by Membrans from one another as there are Births generated in the Womb ; but the contrary is proved by experience . For the Womb hath in reality but one continued Cavity ; and the truth of the matter is this , when several Births , at one time are generated in the Womb , they are contained each in their proper Membrans ; so that if two , three or more Births are conceived , it is when the Male Seed hath been very spirituous , even to the impregnation of so many Eggs , with the same fruitfulness through the Fallopian Tubes , as if there were but one , which being driven down to the bottom of the Womb , are there each of them fructified . XVIII . Whether Issues dispose to Barrenness . It is a Vulgar Maxim among Women , and by some taken for a certain truth , especially here in England , that if a Woman have but one Issue , she is condemned to Sterility or Barrenness , and much more , if more . Therefore to married Women that are in expectation of Childing , this sort of application , tho' otherwise thought very conducible to health , is most strictly forbidden . But of this Interdiction I have yet found no just reason alledged , only there are cited some stories of Barren Women with Issues about them ; but it would not be difficult to produce relations of very many Barren Women without Issues , and of many Fruitful ones which have them . CHAP. III. Of Monsters . I. VVhat a Monster is . THOSE we call Monsters are Natural Births , or Natural Living Creatures degenerating from the due and wonted disposition of their Species . Now they are said to degenerate if there happen any superfluous Member , or any necessary one be wanting , or any part be in a wrong place , or be of another kind than what it ought to be ; so that those persons are said to be Monstrous who are either born without Arms , or with more than ought to be , or have them in a wrong place , as in the Thighs , or have the Head of a Ram , or other unhuman Creature , not to mention several other accidents of this nature . II. Of a Two-headed Twin Fac'd and double-breasted Birth . There goes a tradition of a Boy , born in the Reign of the Emperor Theodosius at Emaus , who from the Navil downward was perfect as others of his kind , but upwards was all double ; Head , Face and Breast , had the use of his Senses , and of all his double parts by turns , while one eat and drank the other abstained , and with the like vicissitude while one slept , the other waked ; while one sported , the other was serious ; discovering hereby effects of a different Mind and Temper , and in this manner he lived near two years . III. A Child born without a Head. Another without Feet , others without Hands or Feet . In 1504. in Misnia , a Child was born without a Head , his Eyes being placed in his Breast . Another in Nebritz , not far from the City Wutz was born without Feet . Others the Roman History mentions born without Hands and Feet . IV. A Monster with one Arm in the Ear , and another in the Side . In Stetin was born a Monster shaped as followeth , in the place of the Head there was an unformed Mass or Lump , rising and sinking like a Sheeps Intrals ; in the place of one Ear stood out an Arm , where the Face should be , there was a tuft of Hair like a Cats Fur , and the Spawn of a Pike Fish , through the lower part whereof the Eyes cast a splendor like Glass ; the Mouth was contracted into a little hole , without Lips ; there was something like a Nose , but wonderfully small ; nor was there any appearance of a Neck : Another Arm stuck out from one side , but there was no sign either of Back or Breast , excepting that a little small Line seemed to supply the place of the Back-bone ; it was neither Hermaphrodite , nor of any Sex. There was also in the year 1516. another strange Creature born , which lived to be a Man , having no other Head but what grew out from the Navil , yet it took in nourishment as freely as if it had been in its proper place . V. A Monster born with the Head of a Dog or Ape . In 1560. there was born at Basil a Man-child with a fierce and grim Visage , having indeed an indifferent well compacted Body , but Head and Face all hairy , and more resembling that of a Dog , Cat or Ape , than of a Human Creature . He liv'd no longer than about an hour and a half . Near Lauffenburg , a Town in Germany , on the Borders of Switzerland , a Child was born with a rough and frightful Head , and the Feet of a Goose . VI. There might possibly be a foundation of Monsters from the beginning . Of all these strange Births various causes may be assigned : For in the first place , we may without offence believe that the first Seed-plot of Monsters as well as of perfect Creatures , was planted in the beginning , and that Generation only conduces to render them capable of a sensible growth ; nor doth it avail to say , that GOD cannot be the Author of Monsters , for he would be so nevertheless , tho' the first Seed-plot of Monsters were not till after the beginning ; and there is a ready answer , viz. That there is nothing in the World except Immorality , of which GOD is not the Author . VII . Or some Canse may be in the Conception . 2 dly , The cause of any Monstrous defect is either in the Conception , or the Egg , in which some passages are by accident obstructed , or some Fibres pluckt off ; or in the Womb , when the Placenta , into which the Male Stock is ingraffed , hath suffered any defect ; or in the decision ▪ of the Conception , or last efflorescence . VIII . Or from the streightness of the VVomb . 3 dly , These Monstrous Bodies may possibly proceed from the streightness of the Womb , whence HIPPOCRATES compares an over-streight Womb to a stony place , which causes the Tree that springs up there , to become bent or dismembred ; or to the narrow Neck of a Vessel which stifles the growth of the Cucumber when tender , and contracts and curtails it when growing to maturity . IX . Or from the Imagination . 4 ly . The force of Imagination may produce a defect , or exorbitancy in the Birth , as we oft see Warts and Spots imprest upon the Birth by Imagination ; and these Spots are not always the simple resemblances of Cherries , Mulberries , but also sometimes of Entrails , as Liver , Heart , &c. Now if this Imagination have such a power upon one part , why may it not have the like upon many , nay upon all ? X. How Twins come to be born with Bodies joined or fastned to each other . Animals which bear Twins , sometimes bring forth Monstrous Births . So we see may times out of one and the same Egg , a double Monster produc'd , a Chicken with four Wings and as many Feet , and sometimes with two Heads . Twins oft-times are born with their two Bodies joined together into one ; as at Constance , near a place called Abronium , there were born two Children , Male and Female , with two Heads , four Arms , and as many Feet , that is , each of them had all their Members compleat , only they were joined together about the Navil . The Reason seems to be , because altho' Twins in most Animals are wrapt up in the same Membran , called Chorion , yet each of the Births hath its proper Membran , called Amnion , and therein a separate Conception ; yet sometimes it happens that these two Membrans , mix as it were into one , or at last mutually intersect each other , whence certainly arises a great confusion of parts , for this the Fibres and the Canals have proper to themselves , viz. that they easily join into a Contexture ; so there is not a total confusion of the Colliquaments , but only some commixture and compression which will cause the two Twins , thus united together , to have some parts in common ; and the Colliquament , upon the consumption of one of the salient points , to turn into a duplicated Animals , and consequently some Members will prove superfluous . The same thing happens in Fruits , if they be crowded up in straight places before they arrive to their due magnitude , as hath been already hinted , tho' Plants seldom undergo this sort of failures and lapses of Nature , because they are more plain and simple , and the Organs of their Body are lesser and less exact ; so that in their constitution they give Generating Nature less occasion to err . For it is very obvious to err in composing works of divers parts join'd each to other with most curious Artifice , as the Members of Animals are . Whence it appears , that Mothers consult very ill for themselves and Children , while they live idely and lasily at home , and incommode the Child within them , while they sit double or cross-leg'd at their Needle-work . Forasmuch as by this overmuch contraction , they bring Children into the World Bunch-Backt , Splay-Footed , Crooked or Awry , or some way or other Mishapen . XI . How Africa comes chiefly to abound in Monsters . Sometimes also Monsters are produc'd from the various commixture of divers Seeds , that is , when the sorts of Seeds are taken in at several times one before , another after . Hence it is that Africa is generally said to abound in Monsters , because Animals of different kind resort from all parts of the Country to drink of what Streams of Fresh Water they can find , which are fewer than in any other quarter of the World ; and so rencountring each other , they couple promiscuously together , and bring forth productions never intended by Nature . XII . How it may be known whether Monsters , having double parts , be two Animals , or but one . The next thing to be considered is , whether Monsters that have double parts , can be said to be two Animals or one . To determine this the better , it is to be supposed , that the Heart is the principal part of every Animal ; forasmuch as all other parts derive their original from it ; so that if there be two Hearts in any Animal , it will necessarily follow that the Animal possessing those two Hearts is a double Animal . For as it is the principle of the Operations of the sensitive Soul , according to the Internal Senses , and in part according to the motions of the Appetite ; so it is vulgarly said to be the principle of the Vegetative and sensitive Soul , according to the motions of the Appetite . Hereupon SENNERTUS infers , that that Monstrous Birth of Emaus having two Heads and two Hearts , was to be accounted two Men : But that the other born in the year 1531 , who had two Heads , and but only one Heart and lived to Mans Estate , was to be reckned no more than but one Man , which he proved by this Argument viz. that the two Heads perpetually testified their consent to the same actions , had the same appetite , the same hanger and thirst , spake in the same manner , had the same desire to accompany with their Wife , the same desire to exonerate Nature . But in the other who had two Hearts , there was not found the same conspiracy and consent of Affections and desires : what this would have at one time , the other affected at another time ; sometimes they agreed , sometimes they squabled . XIII . Monstrous Births in other Animals besides Mankind . Monstrous Births proceed not only from Mankind , but also from other Animals ; forasmuch as being equally endued with Corporeal Imagination , they may be as eagerly intent in the beholding of any Object , and by this means may induce various Forms upon their Births . So Jacob made a great part of his Unkle Labans Flock his own , by the ringstreaked and variously spotted Rods he cast before the Ews when they were ready to conceive : Thus we draw fine Pictures upon the Wings and Tails of divers sorts of Birds ; thus we produce delicate breeds of Dogs and Horses curiously streakt and spotted ; and who knows but that that wonderfully shapt Monster described by FINCELIUS might be produced by this or some such like artifice ; that Monster , I say , which being calv'd by a Cow , had the Feet of a Calf , a Mans Head , with both Ears also like a Man , and Hair of an indifferent length , a Breast also and Teats on them like a Human Creature . Nor must the Turky Hen be past by , which had the Body of a Peacock , the Crest and Dewlap of a Game Cock , a Voice like that of the Peacock , and a noble display of Colours on the Tail ; for such is the force and power of the imaginary , tho' corporeal Faculty , that when Animals behold any thing attentively , it makes so deep an impression in them , that they impart those impressions of various forms upon their Births . XIV . But most in Mankind . But there are more differences and varieties in Man than in other Creatures , by reason that swiftness of Thought , readiness of Mind and variety of Fancy and Ingenuity makes impressions of various forms , whereas other Creatures , have for the most part the same reception of Images which are produc'd from the variety of Tracts imprest in the Brain , whereby it comes to pass , that a Womans Imagination induces a strange and borrowed Form and Image , no way like to the begetter , but totally differing from them . XV. Whence the deformity of some Bodies . Now upon serious reflection of all that hath been said on this Subject , there is nothing more odious and detestable to me , than to see wanton Women so excessively delight themselves with Dogs and Apes , as to carry them in their Bosoms , hug them , stroak them , and be continually handling and making much of them ; since by this familiarity , and having these Creatures perpetually in their sight , the imperfect Nature of Women is apt to conceive in the Mind one or other strange form or feature , and so fix upon the Birth a Face like some of those Animals they converse with , or at least some way or other specially illfavoured . Yea , sometimes Children are brought into the world with odd kind of shap'd Bodies , Visages out of the common road of Human Aspect , distorted Mouths and Cheeks , inflate like the Picture of the North-wind , and all by the Mothers regards continually and intently fixt upon brutal and unwonted Objects . CHAP. IV. Of the Birth of Animals . I. Why Women bring forth but one Child at a Birth . WOmen lie in commonly but of one Child , whereas other Creatures bring forth many of their kind at a Birth . This is , because in those Animals there are divers Cells or Fleshy Eminences , to which small Eggs are fastned , one to each : But it is not so with Women , for tho' the Virile Seed ascends in vapors to the Testicles through the Tubes of the Matrice ; yet notwithstanding Women do not commonly conceive two Children , by reason that the Womb hath but one Cavity ; and that for the accomplishing of Generation , it is not enough that it be receiv'd into Testicles , but it must also be received into the pores of the Eggs to cause them to ferment ; nor can these pores receive it till after the Egg is brought to a certain point of maturity , to which commonly , in Women , they attain not to , but only one after another ; as we see in the Ovaries of Hens , whence the Eggs for the most part are not unfastned but successively . We must therefore suppose that when Women bring forth two Children at once , it either proceeds from hence , namely that two Eggs fall at one and the same time into the Womb , and that there are two places for them to be fastned to , and for that the two Eggs have been in such sort formed in the first Creation as to be apt to fasten to the same Placenta . II. Whether there be any sign to discover whether a Woman shall have Twins or not . There are some who brag that by a certain sign or mark , they can easily guess whether a Big-bellied Woman shall have Twins or not . But their boast is vain and groundless , for of this matter there can be no certainty , rule or knowledge . It can neither be the big swelling of the Belly , which sometimes is greater in the bearing of a single Birth , than in that of Twins ; nor the diversity of motions , which many times some have taken such strict observation of from an abortive Embrio only , especially by the slow motion thereof , as to believe that the VVoman would certainly have had Twins , had she gone out her time . Nor an external Line dividing the VVomb in the middle , which several Anatomists have , even from their own Wives , found experimentally to be a vain conceit : Nor the swelling of their Legs and Feet in the last Month , or Months of their going with Child , since they swell in that manner , even in the bearing of single Births : Nor lastly , the large distension of the Belly towards the Sides , which the various situation of a single Birth may be the cause of . Rebecca indeed from the extraordinary motion of two Embrio's strugling one against the other , guest that she had Twins within her ; but this might also be partly a Divine Instinct . III. What the Cause is of Abortion in Women . VVomen oftentimes happen to bring forth an Immature Birth , and to suffer an Efflux or Abortion before the due time appointed by Nature for their Delivery . Abortion , or the untimely Exclusion of a Birth , not yet perfected , happens according to the opinion of the Galenists , either from the overmuch abundance of Blood , by reason of the great afflux thereof to the VVomb , more at that time than another ; or else from the want of Blood in the Mother to nourish the Infant . But in my Judgment there are several Causes to be enquired into , as well relating to the Mother , as to the Birth . On the of the Birth , Abortion happens when the Uterine Glands are so infirm , that they are soon broken ; or the Membrans so thin , as upon the least occasion to burst ; upon which the humours breaking forth , the Birth decays . On the part of the Childing VVoman , if she be of a weaker Nature than ordinary , and hath not strength sufficient for the bearing of such a burthen : Sometimes it happens from a suddain fright , or the noxious temperament of the Air. To which purpose AELIAN relates , that VVomen inhabiting the Southern Countries are more subject to Abortion than those that live more Northerly , because there the Limbs are more supple ; and those parts which conduce to Childbearing are more loosened . IV. When Abortive Births use to happen . An Abortion may happen from the first moment of Conception to the beginning of the seventh Month ; but it is most frequent about the end of the third : not but there have been examples thereof both before and after that time . Before the tenth Week after Conception , exclusions are scarcely taken for a real Abortion , because till after that time scarce any rudiment of a Birth appears ; so that it is then rather accounted for a Mole . For unless the Birth appears in the body of the Placenta , it is not allowed to be a true Conception , and consequently the exclusion thereof cannot be said to be an Abortion . V. Why Infants are born at nine Months end . The end of nine Months is the usual time of an Infants coming into the world . The Reason of this is , partly because of the overmuch Meconium of the Intestins made by the excrements , which is nothing else but the mixture of Phlegm , Choler and Pancreatick Juice , which because of overmuch delay , become oversharp , whence by a troublesom vellication of the Fibres of the Intestins , it causes an influx of the Animal Spirits into all parts , and so the Birth overmuch stirring it self by its calcitration or kicking , breaks the two Membrans , the Amnion and the Chorion , in which it is wrapt , and gathering it self round , shoots downward towards the internal Orifice of the VVomb , which by dilating , it naturally makes its way into the world . VI. The Viper does not let out her young ones through her dissected Sides . The Viper brings not forth but with the loss of Life , for on the third day shutting in her young ones into her VVomb , having about twenty to bring forth , and having brought one a day for two or three days before , the rest impatient of their slow Birth , and hastning into the Light , bite through the Sides of their Dam , and thereby open a gap to their own Life and her death . Whence Mantuan ; The Viper wounded by the fatal bite Of the young Vipers , dies to give them light . This Tradition , from the Age of Herod●tus to this very time , hath been received for an undoubted Truth , namely , that the Male Viper loses its Life in the midst of Copulation , by thrusting its Head into the Mouth of the Female , who through the height of pleasure bites it off : As also that the young ones not tarrying their time , make a speedier way by tearing the VVomb , and gnawing through the Breast of the Dam. But the vanity of this assertion they find by experience , who preserve them in Glass Vessels for their use , in certain Medicinal Compositions . It may well enough be conjectur'd that this fancy took its original from hence , namely , because Vipers are brought forth fenc'd about with their Membrans , which in regard some of them break not till the third day after their being brought forth , and others free themselves of them in the VVomb ; hereupon some have taken the Membran for the VVomb , and delivered in writing that the Brood of Vipers gnaw through the sides of the Dam , and by that corrosion cause her Death . VII . But the Fish Acus . But this is known for a certain , that the Belly of the Fish called Acus , in the midst of her breeding , cleaves into a gaping Aperture by reason of the multitude of young ones within her , which cleft is not effected by the corrosion or gnawing of the young Fry , but by the rupture of the Skin making a gap under the bottom of its Belly , by which , contrary to the custom of other Fish , its VVomb is extended in time of breeding , and in which it lays up its Spawn . For RONDELETIUS upon his own experience attests , that as he was dissecting of one of this sort of Fish , he found abundance of Spawn in that very gap ; and likewise that as he was inspecting into the said gap , he found in two other lesser ones , some Spawn newly hatch'd , and many Births just perfected ; whereof some of the biggest moved , but others imperfect , whose Eyes and Mouths were only to be perceived . From all which it may be gathered , that the Fish Acus does not so much bring forth young ones , as exclude them out of that bursted Gap , and that the Viper suffers no damage by the production of her Viperous Blood. VIII . How it comes that Animals have each their set season of bringing forth from the time of Copulation . Animals observe each of them , their certain and determinate time in bringing forth . Elephants go go 2 years , Mares 11 Months , Camels 12 Months , Cows 10 , Sheep 5 , Bitches 9 Weeks . Birds also lay their Eggs at a set time from the Seed received . Women also have their ninth or tenth Month for their delivery , which if they exceed , the Birth is accounted either not Natural , or not Legitimate . There is one common Cause of all these different Seasons , namely , for that the Birth as it grows bigger and bigger , being more and more unsatisfied with its nourishment , makes a stir and eagerly indeavours to enlarge its Commons , and provide it self with a more plentiful subsistence ; as also for that being shut up in too narrow a compass , and streightned by the Membrans wherein it is wrapt , it shakes the Walls of its Prison to get free . And this is to be observed , not only in Animals of the bigger sort , and viviparous or live-bearing , but also in the Oviparous or Egg-bearing . For a Chicken shut up in its Egg , as soon as the Yolk upon which it hath lived is consumed , with the help of its Dam , the Hen , breaks the Shell and gets its liberty . Thus the Egg , after formation compleated , becomes so burdensom to the Womb , that being in a sort exasperated , indeavours to expel the said Egg , and to free it self from so troublesom a burthen . IX . Why Animals are born with their Head downward . All Creatures , if they are brought forth according to Nature , are carried inverse , and prone upon the Head , open the Mouth of the Womb. The Reason is , because that part of the Body , from the Navel upwards , to the Head , is more ponderous than that which from the Navel reaches downward ; and since heavy things tend to the lower parts , the Head of the Infant must of necessity be carried first to the Orifice of the Womb. As of two Skales of a Ballance , the heavier tends downward , and the other upward . And if at any time it happens otherwise , that Birth is said to be not Natural , but as it were perverting the course of Nature ; as when it comes out with its Feet forward , or with one Foot stretcht out , another tending to one side ; or when with one or both Hands it offers it self to the Mouth of the Womb. X. Why Infants born in the 7th Month ▪ live , and not those born in the 8th . Ancient Physitians are of opinion , that a Septimestrian-Birth , or a Child born in the seventh Month may live , but that an Octimestrian or Eight-month Birth is for the most part fatal . The Cause hereof HIPPOCATES attributes to the order of the seven Planets , that preside over Human Affairs , and have their domination or Government over them , each in their turn . So that according to his assertion , the first Month belongs to Saturn , the second to Jupiter , and so of the rest , till the dominion comes to Mercury , who is the lowest of the Planets ; which Circuit being finish'd , it returns again to Saturn . But how comes Hippocrates to understand so well this power of the wandring Stars ? Wherein is it that this great force of theirs consists ? What Instruments guide them to the Infant wrapt up in his Membrans ? But looking upon these things as the Dreams of a wise or rather industrious Person , I choose to adhere to PLINY , who affirms the contrary to have hapned in Aegypt , in which Country he saith , there is nothing more frequent than for Octomestrian Births to live , and brings for example , Caesonia , the Wife of the Emperor Caius , who came into World in the eighth Month. This account is confirmed by CARDANUS , bringing an instance of Cardinal S●ondano and others , who being born in the eighth Month , nevertheless lived to a very considerable Age. And what should hinder us from asserting , that Persons born in the eighth Month are more long liv'd than others ; since it is a great Argument of vigor that they anticipate the ordinary course of Nature , and as it were take it in dudgeon to be shut up longer in a Prison , unless the blame be laid upon the Mothers weakness , and the Birth be accelerated by an overmuch irritation of the Womb. XI . How Infants are said to be born in the 12th or 13th Month. It is delivered by some Physitians , as well Ancient as Modern , that there are Births of eleven Months : PLINY makes relation in his seventh Book , Chap. 5. of a Woman who was brought to Bed in her thirteenth Month ; and AVICEN writes of another that was delivered in her tenth Month. This Computation may possibly have hapned from the roguery of some Women , and the simplicity of others in misreckning their time : Roguery when a Woman having no Children at her Husbands death , may for enjoyment of his Inheritance , and Personal Estate , accompany with another Person , and have a Child by him within 11 , 12 , 13 , or 14 Months , and so lay the getting of it to her deceased Husband ; which kind of Villany is so common , that all the World over in all Judicial Courts ring of it . And this is the reason that these late kind of Births are seldom heard of except in such sort of Widows , but very rarely in those Women whose Husbands live , and constantly Bed with them . But as to the misreckning , VVomen generally compute the beginning of their Conception from the first stoppage of their Courses , whereas it may possibly fall out , that for some other cause they may stop two or three Months before Conception ; so that if a VVoman begins the computation of her being with Child , the very first time of their stoppage , she must needs be in an error , and by reason thereof it will be thought that the Infant came into the World on the 11 th or 12 Month , when indeed it was born after the wonted manner at the end of the 9 th Month. XII . Why Infants kick a little before their Birth . A Great Birth , when Mature , for the most part kicks , and gathering it self up in a heap , breaks the Membrans in which 't is wrapt . This Kicking proceeds from a necessity of refreshment or respiration ; for the heat of the Embrio is small at the beginning , and setting it self at first to shoot out like a small sparkle , it hath then no need of refreshment , but augmentation ; but as the bulk encreases by little and little , so also the Actions and Motions of the Birth encrease . But at length the heat is so encreased , that then it chiefly wants ▪ ventilation and refrigeration , which not being found , the Birth begins by little and little to be more and more disturbed , and by reason of that disturbance and anxiety , to stir and kick at length so much the more strongly , and by that strong motion to incite the Uterine Vapors to a violent Effervescence or boiling , and thereby to endeavour to make its passage out into a freer Air. XIII . Why the Milk encreases in the Breasts the fourth Child-bearing . Womens Breasts immediately after their delivery , swell and abound with Milk , but especially on the 3 d , 4 th or 5 th day . That is , because Childbed Women the three or four first days after delivery , seldom bend their Minds intently upon any business , or serious affairs , and thereupon having but very little appetite , they eat and drink less than usual , and breed less Chyle ; but in the following days they eat more , and the Infant begins to cry more , and then they presently begin to think of Nutriment for the Child , and desire to quiet it from crying . From which affection the passages being loosned by a determinate influx of Animal Spirits , which before were carried to the VVomb , the Chylie Juice is then converted to the Breasts . XIV . Imagination impells the Chyle to the Breasts . And this their strong intent and frequent rumination about their Milk , and the suckling of their Young Ones , may possibly cause the Chyle to be the better conveyed to the Breasts : Which most evidently appears from what SANTORELLUS relates of a Man , who after the death of his VVife , not being able to hire a Nurse , one time above the rest , to still the Child , when it cryed , took it to his Breast , and gave it the Dug , doubtless with great desire of satisfying its Appetite with Milk : and by this iterated application , together with an earnest intention of Mind , and the Childs sucking of the Teat from time to time , the Chyliferous Passages were opened , and the Paps afforded plenty enough of Milk for the Childs nourishment . Thus Imagination , and great apprehension of Danger , sometimes causes a Man to tremble , to be in a cold sweat , to fall into a swoon and the like . XV. Children sucking the Breasts of a Woman with Child , contract Diseases . Infants that suck the Milk of a VVoman with Child , become sick and weakly , and many times contract dangerous Diseases , as we see in too many , who by reason of the Nurses avarice , get a sickly habit , which shortens their days , and never ends but with their Lives . The Reason is , because the sweetest and grossest portion of the Alimentary Liquor is attracted by the Birth , and nothing but what is serous , and tainted with excrementitious depravity is carried up to the Paps . For tho' the said Paps , as HIPPOCRATES affirms , are rendred so much the larger , by how much they attract any thing of Fat from the Belly ; yet in regard before Child-birth , the passages are too narrow for the fatter and sweeter parts of the Milk to pass through ; therefore nothing but what is serous and most hurtful to the Infant , can get up to the Paps . XVI . The occasion of a Womans bringing forth a dead Child . A VVoman , within the verge of our memory , upon the sight of the Naked Arm of a lusty well-flesh'd Man , longed to eat some of it , and the Honest Man in pity to her Condition , and to satisfie her extravagant Appetite , permitted her to bite thereof : But upon her second longing he thought it too much to sacrifice his Arm to her ill-govern'd Appetite , and made bold to deny her ; whereupon the unhappy VVoman , who doubtless could not help her irregular desire , overcome with trouble , fell in Labour . Of this there can be no other Reason , than for that the VVomans Heart , having contracted a deep sorrow , the vital Spirits were diminish'd , and the Humours design'd for the nourishment of the Child , averted another way , and not conveyed as at other times to the Womb. So that the Infant destitute of that Aliment , wherewith the Mother would have had it satisfied , languish'd and at length died . For the Passages and Conveyances by which sustenance used to be conducted into the Womb , being shut , the Infant must be destitute of Nutriment , and so deprived of Life . XVII . How the marks of a Woman stabb'd with a Dagger were imprest upon the Child in the Womb. A certain VVoman in France , being stabb'd with a Dagger , an Embrio was taken out of her Body , mark'd with as many livid spots as she had received stabs , and in the very same parts of the Body . The Reason is , because the Embrio , carried in the Mothers VVomb , makes up but one Body with the Mother ; and as it is nourish'd with the same sort of Aliment , so it is vegetated with the same Spirits according to all its parts . Wherefore no wonder if so tender a Body as that of the Embrio is subject to the same accidents as the Body of the Mother is subject ; and any Mark or Brand whatsoever is the more easily imprest upon it , in regard the Animal Spirits , which convey the conceived Image , are directed by the Mother , whilst she touches any part of the Childs Body , and as it were marks it out . CHAP. V. Of Hunger and Thirst . I. How all Animals at one time or other come to be afflicted with hunger and thirst . ALL sorts of Animals are some way or other , or at some time or other pinch'd with hunger ; and if we should except the Chamelion , which is said neither to eat nor drink , there are at least none besides which feel not a vellication of the Stomach , and have not sometimes dry and juiceless Jaws . II. That the Chamelion lives not upon the Air alone . Before we come to discuss the Reason of this Affection in Animals , it will not be amiss to premise something concerning the falsity of this Old Tradition , viz. that Chamelions live only by the Air , since it is well known by experience , that they greedily receive as for a great delicacy a sort of little Worms pick'd out of Meal-troughs , and that they make use of a Probose●● instead of a Tongue , which they manage like a Dart , with such incredible speed , as not to be discerned by the Eye of Man. III. Whence Hunger in Animals proceeds . The Reason of that trouble and pain caused by Hunger , is the great plenty of a certain Acid Liquor flowing into the Stomach , which Liquor being conveyed from the Heart through the Arteries , insinuates it self among the particles of the chew'd Meats , and by diluting them , composes the Chyle . But when this humour finds nothing of Meat in the Stomach to be diluted , it exerts all its force into the Membranules , whereof the Stomach consists , and agitates the Nerves , whose Extremities adhere to the said Membranules , in such sort as is required to the causing of the sense of Hunger : Whence no wonder if the Stomach being empty , and the Meats consumed by the Native Heat , Hunger succeeds with a gnawing of the Belly which attends it . In like manner , all Creatures are affected with a desire of quenching their Thirst by Drink , whilst the serous part of the Blood , which is accustomed to take its course to the Stomach and Throat , under the species of water , thereby to moisten those parts , sometimes also repairs thither in Vapor , and so dries the Throat and the VVind-pipe , and at the same time moves the Nerves in such a manner as is required to excite a desire of drinking . IV. Why great drinkers of Wine and Strong Liquors are little Eaters . Hence those that are great Drinkers of VVine , Brandy , or any kind of Strong Liquors , more or less lose their Appetite to Meat ; in regard the said VVine or Brandy , being full of Volatile Salt , cause the ferment of the Stomach to be either too volatile , so as that over-running the most subtle pores thereof , it leaves the Stomach destitute of all Incitement or Provocation , which produces Hunger , or at least takes away that correspondence that ought to be between the Salt and that Acid Ferment which is required in the Stomach to excite Appetite . V. How Sparrows come to-be so voracious . VAN HELMONT is of opinion , that Sparrows are therefore so very voracious and desirous of Meat , as having much of acidity in the Throat , and the Stomach irritated with some pungent Liqnor . Hence the most dry and juiceless Meats are commonly eaten with some or other Acid Liquor or Pungent Sauce , as Vinegar , Limon-juice , Pepper , Olives , Capers , Mustard , &c. to stir up an Appetite , so far as they are capable of helping the foresaid vellication of the Acid Juice by their own proper acidity . But all kind of Fat Meats , Broths , or Fat Soops soon satisfie hunger , by glutting the Stomach , in regard the foresaid acidity of the Vellicant Juice , being as it were drowned in those sort of Glutinous Bodies , gives not that provocation before-mentioned to the Stomach . VI. Not the heat of the Stomach , but the Acid Juice performs the Concoction of Meats . By this we may easily see into the error of Ancient Physitians , who attribute the Concoction of Meats to the heat of the Stomach ; and imagined that the alteration of them was the effect of some extraordinary aestuation . Forasmuch as if we should take some certain Bones of a Sheep or other Animal , and cast some of them into a Kettle of water seething over a great Fire , and throw the rest to a Dog to be devoured ; it will appear plainly to the Eye , that those in the water , tho' boyling never so fiercely for some hours , have suffered no diminution , but those eaten by the Dog will be found upon the dissection of his Stomach three or four hours after , allmost wholly converted into Chyle ; whereas it would happen quite contrary , were the Concoction of Meats performed by heat alone , since no Man can make any doubt , but that the heat of the Kettle vastly exceeds that of the Dogs Stomach . VII . How it is that Meat received into the Stomach , turns white . Meat conveyed into the Stomach , and converted into Chyle , turns white like Milk. This whiteness of the Chyle is effected , not by any assimilating faculty , as Physitians have all along , and still do commonly fancy , but by an action wholly mechanick ; for as we see in an Apothecaries Shop , that many times Fat and Oily Ingredients , mixt with Watry , turn of a whitish Colour : So likewise in our Stomach , the Essence of the Aliments extracted , seems to us of an Oily or Fatty Substance , as the drink resembles water . So that no wonder , if from the mixture of these two , there ariseth a whitish and Milk-like Colour , which is the reason that the Chyle is always white . And as in the mixture of Oil and Water , a little Sugar , which is a species of Salt , is required to make them mix the more easily ; so also in what we generally take in for sustenance , a great deal of Salt is supposed to be . Or to speak more like a Chymist , it may be said that this Colour proceeds from a Sulphureous Matter : That is , it arises from Sulphureous dissolved together with Saline Particles , mixt with an Acid Ferment ; for we find by daily experience , that if an Acid Humour be infused into a liquor impregnated with Salt or Sulphur , a white Colour is hereby immediately produc'd . As appears in the Spirit of Harts-horn , or Soot , imbibing a sufficient quantity of Volatil Salt , which being incorporated with an Acid Liquor , obtains a whitish Colour , and very near resemblance of Milk. VIII . Persons sick of a Fever are the more difficultly cured if great Eaters . Of Persons that lie sick of a Fever , those are most difficulty cured who are great Eaters , especially those , who by virtue of their distemper , become more voratious than before . Hence Physitians observe , that those Fevers are more lasting , by which Mens Appetites are increased , but those which excite Thirst , shorter . The Reason is , because thirsty people are more easily satisfied by the taking down of Liquor , which breathing out of the Body by Sweat , leaves nothing behind to nourish the Fever : But th●●e whose Fever is inflamed by an Acid and Salt Humour , as being over-greedy of Meat , load and surcharge the Stomach , and so nourish the Disease . The appetite of Meats is irregular , and affects us not always in the same manner . IX . How it comes that some are tormented with unquenchable Thirst . Some are so excessively opprest with Thirst , that all they can drink is not able to quench it . The Cause of this excessive Thirst in the Mouth of Sick Persons is obvious ; namely , when the Salival Vessels are so obstructed , that they cannot discharge their moisture into the Mouth ; whereupon the Mouth being excessively dry , and parch'd , excessive thirst must needs follow . Nor can it be removed , how much Liquor soever is pour'd in , so long as that obstruction of the vessels lasts . Another Cause of Thirst is , when Moisture only is wanting in the Blood ; but this Thirst may easily be expelled by a large draught of Drink , by reason that in this case the vessels are open enough . Now when the vessels are obstructed , to remove that obstruction , opening Gargarisms are to be used , that is , such as are composed of Lapis Prunella , and other Nitrous Medicaments . X. How it comes that sometimes Persons , well in health , have little or no appetite to their Meat . It oft happens that persons who are very well in health , eat indifferently , and with little or no appetite , and can remain a long time fasting without any pain or trouble . Roger Bacon makes mention of a certain Maid that eat nothing for the space of twenty years ; as also of a French Priest , who in the time of Pope Nicolas the 5 th , lived two years without any manner of Meat or Drink . The want of Appetite may proceed from several Causes , sometimes from Obstructions , that is , when the Acid Liquor that provokes Hunger , is obstructed , and denied all access to the Ventricle or Stomach : Sometimes from cold and glutinous Humours , by which its vigor is weakned and hindred from exercising any power upon the Membranules : Sometimes from the corrupt temperament of the Blood , whereby the foresaid Juice impelled from the Arteries into the Stomach , degenerates and becomes of a different nature from what it uses to be ; or because the Juice or Ferment of the Stomach hath been thrown out by purgatives ; whence the Nervous Fibrils are no longer provoked ; or because the Heat or Flame ( as Physitians call it ) of the Heart , is agitated but with a gentle motion , and thereupon consumes but a small quantity of Blood ; as we see commonly in Maids troubled with the Green Sickness , who being taken with an Anorexie or want of Appetite , have wholly abstained from all sorts of Meats for a considerable time , and without much falling away of the Body . XI . Hunger proceeds not from any liquor in the Milt . For I cannot assent to those who will have it , that Hunger proceeds from a Liquor flowing out of the Milt , since there is a short Ligature of the Venous Vessel between the Stomach and the Milt , which by its intumescence or rising up in a living Animal , hinders any thing from passing out of the Milt into the Stomach , as appears from those Valvulae which are in the said Venous Vessel ; being so disposed , that tho' any thing may have a passage from the Stomach into the Milt , yet from the Milt through any Veins into the Stomach it cannot pass . XII . How a Maid could live several years without Meat or Drink . As to that English Girl , mentioned by Roger Bacon , who eat nothing for the space of twenty years , it will prove a very difficult task to make out clearly the Cause of so long and continued an abstinence from Meat and Drink , unless it be allowed , that from an extraordinary moistness of the Brain , a certain thin and pituitous matter flow'd down from the Head into the Stomach , which might possibly turn to Nourishment in the Body , as we see in Dormice and several other Animals , namely , Bears and Brocks , that pass whole Winters , and receive no sustenance from without , but are nourish'd only by their inward Fat. It may also be asserted , that the Vital Flame , and as Philosophers vulgarly call it , inmate heat in the aforesaid Green Sickness Girl , moved slowly , and consumed but a small quantity of that Blood which turns to Nourishment in the Body . XIII . Hunger expelled by the taking of Tobacco . Hunger and Appetite is many times abated , and sometimes expelled by the taking of Tobacco , as we see frequently among Soldiers and Seamen , who upon the taking of a Pipe of Tobacco , are often very well refresh'd , and their Hunger satisfied . The Reason hereof seems to be , that in the common sort of Tobacco , being strong and full body'd , there is much Opium , which keeps the Blood from being over Acid , and restrains the Spirits from flying away in too great a quantity : For herein Hunger and Appetite chiefly consist , that the Acid Humours vellicate the Nerves of the Stomach ; which Acidity , if it be drown'd and stifl'd in the Viscosity of the Tobacco , the appetite and desire of Meat must of necessity cease ; and if by reason of the said Viscosity , the Acidity of the whole mass of Blood be blunted and impair'd , consequently the fewer Volatil Spirits must be left ; the loss whereof will be attended by debility of Body , and at length by death it self . XIV . Some are always hungry . Some there are who are scarce ever satisfied with Eating , but are still ravening after more Meat ; and such are they who are said to be affected with a Canine Hunger or Appetite . FRISCUS Lib. Cap. 7. makes mention of a Woman of a great Age , who was not able to live a moment longer than she was eating . The Emperour Maximus , surnamed the Thracian , who succeeded Alexander the Son of Mammaea , had for his daily allowance a prodigious quantity of Meat and Drink . This extraordinary Voracity may proceed from two Causes , first by reason of the Acid Juice in the Stomach , so excessively abounding , that tho' Food be never so fast cramm'd in , yet it remains so acid and pungent , that it still corrodes the Stomach , and continues a violent Vellication ; and since the Meat in the Stomach is thereupon not dissolv'd in such a manner as it ought , the Mucilage thereof hapning for the most part to be corrupted , comes back at his Mouth , and is cast off as unprofitable and superfluous Aliment . 2 dly , This unreasonable desire of Meat may proceed from Worms which swarm in the Belly , and cease not to gnaw and feed upon it any longer than they are fed themselves with fresh supply of Nutriment . And to this purpose there goes a story of a certain Woman , who having voided a Worm of twelve inches long , return'd to her wonted moderation in eating ; and likewise of another that did the same after she had voided 100 little Worms . XV. How it comes to pass that some persons can live a long time without Hunger or Appetite There are some , who , for several days together feel no Hunger , and remain fasting without any disturbance of Mind . The occasion of this is , because that Liquor which affects the Membranules with its acidity , is too dilute or weak to be capable of vellicating the Stomach , or because at that time it may possibly be separated from the purity of the Blood , or pass away into Sweat , either by insensible transpiration , or by urine . And this confirms the story of a certain Man , who being shut up under ground , and not able to get out for the space of three weeks , kept himself alive all that time by drinking his own water : For whilst he was so imprisoned , his Blood was less diminished by insensible transpiration , than when he breathed in the free Air above ground . XVI . How it comes that Women with Child covet the eating of odd sorts of Meats . Women with Child , especially the first three Months , when they begin to be subject to their Breeding Qualms , delight to feed upon things of a strange Nature , and unfit for Human ▪ Food . Some delight in Tan'd Hides or Leather ; some can eat Shreds of Woollen or Linnen ; others Chalk , Tobacco Pipes , Cinders , or the like . The Reason of this strange deprav'd Appetite is deduc'd from the Reason of Hunger it self ; for when the Liquor which proceeds from the mass of Blood , continually takes its course through the extremities of the Arteries into the Stomach , it preys upon it , as hath been said , for want of Food , by agitating more vehemently than usual , the Filaments of its Nerves . But if the said Humour be of that Nature as to exert its ability rather upon some meats than others , after the same manner as Aqua-fortis more easily dissolves Metal than Wax ; it thereupon affects the Nerves of the Stomach with some singular quality or other . Whence it comes to pass that the Soul inclines to some sorts of Meat rather than others , and at such time as aforesaid , most vehemently covets , what at another time it would loath . XVII . Why some that are great eaters ▪ nevertheless are spare and lean . Some Persons , tho' they eat much , yet are never the fatter , but always thin and lean : Others on the contrary , eating but little , grow very fat and corpulent . The Reason is , because some people consist of a Fibrous Blood , and their Fibres are of a very soft and pliable contexture ; so that by the accession of new Fibres , their Flesh must needs become inflate and loosened into a fat consistence . Whereas those that are lean have drier Fibres , and which consist of a harder contexture ; which being uncapable of access or addition , cannot be augmented or dilated . Another Reason is this , because too great quantity of Meats devoured , cannot well be fermented or attenuated ; whereupon there arises a thick and viscous Chyle , which being conveyed to the Lacteal Veins , and by reason of its thickness not being able to pass , is forced to stop , and this stoppage produces obstructions , which hinder the Chyle from passing freely to the Blood. So that no wonder if some great Eaters are frequently leaner than those of a sparer and more slender Diet. XVIII . Why after Meat some feel more cold than before . It is a common observation , that many persons are more cold than ordinary after Meat . The followers of GALEN alledge for a reason , that the heat draws inward , and returns toward the Heart ; but we rather assert , that the true reason of this cold is , because the cruder part of the Chyle transmitted from the Stomach and Intestines through the Lacteal Vessels to the Blood , diminishes in some sort the rarefaction thereof in the Heart , and hinders the Blood from being carried with such a force as it was wont , to the solid parts ; whereupon the Vapors arising from thence into those parts , meet some stop , and thereby the Fibrils suffer a tremour of the parts less than usual , and herein consists the reason of the Cold. CHAP. VI. Of the Motion of the Heart , and Circulaon of the Blood. I. How Laughter comes to hinder the Motion of the Blood. PHysitians observe , that Respiration is hindred by Laughter , and if it be excessive , that then the Motion of the Heart , and Circulation of the Blood is stop'd . The Reason is , because in Laughter the Diaphragma or Midriff seems to be driven by the Muscles of the lowermost Ventricle , which press the Entrals upon it , upwards as far as the Cavity of the Breast , and with a tremulous progress to be relax'd or loosened , as it were to expel the Air by parts , for the forming of a Laughter within the Larinx , whereby it comes to pass , that adhering to to the very Pericardium , it drives up the heart , and its Basis close to its Vessels , as well where it uses to take in the Blood , as where it lets it out : So that the Doors , as it were , of the Heart being shut up , the Circulation of the Blood is for a time intermitted , as plainly appears from a swelling of all the Veins in the Neck , Face and Forehead . That this is the real Cause , may certainly be hence collected , namely , because in long fits of Laughter , especially in young Children , they look black in the Face , from the over abundance of Blood , because of the stoppage of its course , and even Death it self sometimes puts an end to these over-gamesom Frolicks . II. How an Ague-fit , or large draught of Wine accelerates the motion of the Blood. Some things accelerate the Motion of the Blood , as a Fit of a Fever or Ague , and an over-large draught of strong Wine . The Reason hereof in Fevers is , not because the Blood , with an excessive ebullition , flies up into the Aorta , but because its aestuation and sense of heat , hurtful to the Ventricles of the Heart , being transmitted to the Cerebellum or hinder part of the Head , provokes the Spirits to accelerate its motion sooner or later , as occasion requires . Partly also because some parts of the Blood thus roused and carried into the Brain , exagitate the Spirits there abiding , and raise them as it were into a mutiny ; so that those parts that fly up into the Brain from high drinking of Wine or other strong Liquors , stir up the Inhabitants of the said Brain into the like tumults . III. How it is that the Heart of some Fishes , severed from the Body , moves , and sometimes tho' cut in pieces . A Heart taken from the Body in some Animals , leaps and discovers a sensible motion ; nay , and sometimes , tho' dissected and cut into small pieces , it does not presently cease from motion , but beats for some time after , especially in Fishes , whose Hearts move longer than those of any Terrestrial Animal . But how can it be that a Mans Heart can borrow its pulsation from the Soul ▪ when-as the Soul is indivisible , and hath not parts of its own , separate from the Body . We may better attribute this Motion , as well in Man , as in other Creatures , to the Blood contained within the Fibres , which Motion in the Heart is oft times discerned by the Eye , or may be supposed to lurk , or lie hid within the Fibres of the Heart . For a very small portion of Blood flowing from one part of the Heart to the other , being a little hotter , suffices for the effecting of this Pulsation . For by how much the less the quantity of any Liquor is , so much the more easily it rarefies , and is dilated . And as some Members of our Body so much the more easily repeat any motion , by how much the more frequently they have exercised it before : So the Heart , in regard it hath been accustomed to the Diastole and Systole , from the first moment of its formation , may be impelled by the smallest force imaginable to continue it . Whereupon since some remnants of the Blood are dispersed in the Hearts taken out of the Body , it comes to pass , that upon their being dilated by heat , the Hearts for some time beat , and by turns rise and sink . IV. This appears in the Hearts of Eels and other Animals . This is more particularly discern'd in the Hearts of Eels dissevered from their Bodies , in which Hearts some pulsation still remains for a time , that is , because the Spirit of those Eels , implanted in their Hearts , is by a small heat easily raised into Act , and thereby acts upon the Blood , inhering in the substance , and by dilating it in some measure , contracts the Fibres , after which that dilated matter being a little dispersed , the said Fibres are again loosened . And this appears not only in intire Hearts , but also in the Hearts of some Animals dissected into pieces , and that in every several particle , as in each whereof such a dilatation happens about the dissected Fibres . V. The Pulse of an Artery is stopt upon the insertion of a Pipe or Quill into it . Upon the thrusting of any solid Body into an Artery to stop the course of the Blood , immediately the motion of the Artery ceases ; nay , if a Silver Pipe or Quill be put into the incision of an Artery , and the Artery be bound about with a Fillet thereupon , the same effect will immediately follow , altho' the Blood pass through it . The Reason of the first Experiment is plain , because the pulse of the Arteries is made by the Blood , rarefied by turns , and flowing into the Arteries , that is to say , whilst the blood of the great Artery , possessing the place of that next the Heart , thrusts forward and agitates all the rest of the blood contained in that Artery , and its Branches . But a thick Body being thrust into the Artery , the course of the blood is stopp'd ; and that portion of blood entring the Aorta , is not able to thrust forward the other parts contained therein . As to the 2 d Experiment , there must be a distinction to explain it aright . For either the Pipe , thrust into the Artery , is of such a thickness as to fill the whole capacity of the Artery , and thereby to be so join'd to its internal superficies , as that it may not be able to overtop the blood , and to have so narrow a cavity within , as that it cannot without great difficulty be penetrated by the blood . In this case it is evident , that the Pipe , tho' free from any sort of bending , will stop the Motion of the Artery . Or else the Pipe thrust into the Artery , is of that Cavity as to afford a free passage to the blood ; and then whether it be bound with a Fillet or not , it will not way hinder the pulsation of the Artery . VI. Why the Blood runs quicker in the uppermost parts of the Body , ●lower in lowermost . The Blood hath a quicker course in the upper parts of the Body , than in the lower . The Reason is , because in the upper part it flows easily into the Heart without help , ( for the most part ) of any thing else ; but not in the lower part , except by the impulse of the Arterious Blood , and sometimes by reason of the contraction of the Muscles it exerciseth , it is not without difficulty driven upward . And therefore of necessity the Circulation thereof must be quicker in the upper parts . VII . Why the Veins have no Pulse . The Veins have no Pulse , notwithstanding they are no less full of blood than the Arteries , and as well convey into the Heart , the blood returning from the whole Body . The Reason is , because the extremities of the Veins , by which the blood enters , are narrower than their Channels into which it flows , whereby it comes to pass , that by passing from a narrower place into a broader , it loses a great part of its force and vigor : Whence tho' it may fill the Veins with a continual afflux , and make them swell , yet it cannot agitate them with continual subsults , so as to be sufficient for the effecting of a sensible pulsation . VIII . The Veins being bound , the Arm swells , and with continual Ligature drys up . If a Mans Arm be so bound , that all the Veins which tend thither , ( by reason of the pressure of binding ) are so obstructed that the blood is denied all farther access to them ; that Arm in a short space will swell and be puffed up to a high degree ; but afterwards if the ligature be not loosned it will dry up and wither . The Veins being bound , the Arm swells and is puffed up beyond its usual pitch , because the blood flows from the Arteries into those Veins , and not finding a passage , cannot but inflate them , and increase their bulk ; but by little and little this tumor is diminished , and the Veins grow flaccid , because the blood , stagnating in the Veins so bound up , becomes in a short time more gross ; and by reason the Ligature presses the Veins too long , not only the Branches of the Veins are obstructed , but also the passages of the Arteries are also shut up , and hindred from any farther transmitting the blood into tho Veins . Whence the serous part of the blood therein contained , evaporating by insensible transpiration , the Arm must needs fall from its swelling , dry up and wither . IX . During the pulsation of the Heart , all the Arteries do not always beat . We find by experience , that during the pulsation of the Heart , sometimes all the Arteries beat , even to the utmost extremities of them , and sometimes that they do not all beat . When the pulsations of the Heart are very great and perceptible , then the Arteries are perceived to beat sensibly ; but when the Pulses are small and languid , then there is perceived no sensible motion in the extremities of them . Whence HARVEY upon very good ground and consideration , observes as followeth ; The impulse of the Heart , saith he , is diminished as it were in all its parts , at every division of an Artery ; so that at the last division , the Arteries in a manner becoming Capillary , are like to the Veins , not only to their structure and tunicles , but also in their rest , and cessation from beating , since they have no sensible Pulse , or at least not always , except when the Heart beats very vehemently , and the Artery that attends is over-much dilated . And this is the Reason why we sometimes feel a Pulse at the Fingers ends , and sometimes not ; and from hence Dr. HARVEY commonly made his indication of a Fever in Children , when he sensibly perceived a pulsation at their Fingers Ends. X. Whence Women have their Monthly ●luores . Women , when they arrive to a certain Age , have a flux of blood every Month. The Cause of this Profluvium , some attribute to a Nitrous Salt which excites a fermentation in the blood : Whence the Orifices of those Tubuli which reach to the Womb , being dilated by an effervescence , or as it were boyling of the blood , draw the said blood , and as freely refund it back again . But when the blood flows without any stop , the Ferment reinforcing , dries it up , much after the same manner , as water gushing forth , casts out the Nitre which it washes out of the Earth . Then the Womb being reduc'd to its former state , the same Ferment is raised in the same manner as formerly , and if not hindred , being collected together in the same space of time , and in a like quantity , and advanced to a like exaltation , produces a new Fermentation in the Womb. XI . Why sometimes dying Persons Live for a time without any circulation of the Blood. Persons at the point of Death , oft-times live a considerable while without any circulation of the blood . This is most intelligible to Anatomists , who in their dissection of Bodies , often find the Vena Cava empty , and wholly destitute of all Sanguineous Liquor . This may well enough be , by reason of the contraction of those vessels which serve for the transmitting of the blood . For tho' the blood of a dying Person is first refrigerated in the lesser Veins , and farthest distant from the Heart , and then thickned for want of heat ; and thereupon the wonted motion of the blood passing out of the Arteries into the Veins is stopt ; yet the Vena Cava may nevertheless be able to contain something of the hot and fluid blood ; which by contracting it self , serves for a fomentation to the Heart , in the same manner as a Hogs-bladder , blown up and distended by the Air , the Mouth being taken off from the Ureter , expels by a spontaneous contraction , and drives forth part of the said Air. Forasmuch as the Life of the Dying Person is no other way ended , but upon the ceasing of the circulation of the blood : Since all the vital sustenance contained in the Vena Cava is consumed , and the Vena Cava dispossessed of the blood . XII . Why in strangled Persons the Arteries are found to be void of Blood. Hence it comes to pass , that in strangled Persons or Animals , the Arteries are wholly destitute of blood , when as at the same time the Veins are filled . For when the motion of the Lungs begins to fail , and the motion of the Heart still continues vigorous , the blood is forcibly ejected out of the left Ventricle of the Heart into the Arteries , and yet at the same time no new blood flows out of the Lungs into the said Ventricle of the Heart . Hence in a short time the Arteries become empty , a great argument nevertheless that at every pulsation or beat , the blood flows plentifully from the Heart into the Arteries : Whence upon the binding of the Aorta near the Heart , the Carotides or Arteries in the Throat seem empty , not the Veins ; whence it appears , that the blood flows not out of the Veins into the Arteries , but rather out of the Arteries into the Veins . XIII . Why Surgeons tie the Arm in Blood ▪ letting . Surgeons when they let blood , bind the Arm indifferent streight , above the place where they design their incision , to the end the Veins may swell the more , and the blood issue out more freely . The Reason is plain to those that admit the circulation of the blood in Human Bodies ; forasmuch as a gentle binding cannot hinder the blood which is in the Arm from returning to the Heart through the Veins , nor new blood from being always impelled by the motion of the Heart out of the Arteries into the Veins . For the Arteries are placed beneath the Veins , and their skin is harder than to be compressed or bent by any slight ligature or pressure ; besides that , the blood proceeding from the Heart , strives with greater force to advance through the Arteries towards the Hand , than to return from thence to the Heart through the Veins . XIV . An Experiment proving the motion of the Blood. This may be proved by another Experiment : For if upon the swelling of the Veins , for example of the Hand , the blood be pressed by the Finger towards the Branches , the Vein towards the Branches swells , the Trunk in the mean time falling , which immediately upon the drawing back of the Finger , rises and becomes inflate ; that is , because the motion of the blood inclines from the Branches towards the Trunk , which while it is hindred by the apposition of the Finger , the Trunk must of necessity grow flaccid , and the Branches swell : Whence , when-ever it happens , as in a Plurisie , that the passages , for the conveyance of the blood through the whole Body , are streigthned , the Person is in danger , unless immediate Phlebotomy be applied , by which the pores of the Intercostal Capillaries are at length opened , and the blood regains its accustomed passage . XV. How Animals live some time after their Heart is pluckt out . Some Animals having their Heart cut out , still move , as Lizards , Eels , and the like . I have seen a Frog , which having its Heart taken out , remained some time alive . The Reason possibly may be , because motion in Animals is effected by means of the subtiler parts of their blood which pass from the Heart to the Brain through the Magna Arteria or great Artery . But when there is a great abundance of those subtile particles in the ventricles of the Brain , it happens that the Frog remains alive for some time . Since no doubt but new Spirits have flowed from the blood contained in the Arteries : But if the Head be cut off all motion thereof immediately ceases , because then no more Spirits can pass from the Arteries into the Muscles . So that if any parts of these Animals still move after the Head is cut off , it proceeds from the Spirits only , which yet a while adhere to the Muscles , as is to be seen in the Tails of Lizards cut off ; and in Pidgeons , who having their Heads pluck'd off , still move their Wings and Feet for a good while , in regard the Animal Spirits are still fluttering in those inferiour parts , and by those aforesaid intermediate Canals , tend from one Muscle to another , until at length they are dissipated , and after that their motion wholly ceases . CHAP. VII . Of the Actions of Animals . I. How the Badger deceives the Hart. THE Badger Ajachtlus or Tatus in Brasil , lies with his Face upward in rainy weather , and takes in the water by a large passage into the Belly between the Ribs , that looks like a little Pool , and so continues after the shower is over , sometimes for a whole day together , or till such time as the thirsting Hart coming near by chance , sets his Mouth to the Imagined Pool to drink , which the said Badger perceiving , catches hold of the poor Beasts Mouth and Nose , and never lets it go , till tired with strugling it loses its Life together with its wasted Spirits . II. How the Fox deceives the Geese and Hens . The Fox is a very crafty Creature , who sometimes counterfeits himself dead , and lies without all sense of motion , till the inveigled Geese and Hens approach so near that they are easily snapt and devoured by him . Many hereupon attribute Reason , however imperfect , and as they call it Umbratile , to Brute Beasts , by which they manage their actions and effect their designs , with a semblance of Cogitation . And to this Opinion they are induc'd by their being indued with Tongue , Ears , Eyes , and other Organs of Sense : From whence they conclude , that they have a perception like to that of ours . For since in our way of Sensation , Perception , or Cogitation is included , they will have it that the like sort of Cogitation is also to be attributed to them . But these men seem not sufficiently instructed in the nature of Cogitation , when they assign it to Brute Animals : Forasmuch as those effects of sensibility mentioned , are proper as well to the Body as to the Mind . Otherwise all other Animals might be asserted to be equally indowed with Intellect and Will , and must of necessity be judged , not only equal , but even superiour to Mankind ; since we find that they comprehend objects at one view , and attain to what they design the very first time they attempt it ; a thing scarcely to be allowed , even to the wisest of Men , who make their conclusions and results , not without long Discourse , Study and Cogitation , which these Creatures at once , and by a simple apprehension attain to . III. There are affections in Brutes , but not reason . I acknowledge indeed certain affections in them , by which they are impelled to the performance of their actions , but not Cogitation , and the modes of thinking proceeding from it . So the Badger lying on his Back in the open Air , to retain the Water which the Rain had poured into his Belly , as it were into a Trough , and being wakened by the approach of the Hart to drink , is led by instinct to catch hold of his Mouth , by the closing and shutting together of its strong Coat of Mail , to get possession of his Prey ; and afterwards calling to mind the said accident , he might from time to time , as often as hunger urg'd , make use of the same stratagem for the getting of new provision . All which things might very well be effected , without the help of Reason , Design or premeditation , but only by the disposition of the parts of the Body , and the frame or structure of the Organs . IV. How Brutes come to have a memory . Brutes indeed have a memory , not by virtue of a Rational Soul or Mind , of which they are destitute , but of motions formerly received by tracts heretofore impressed by the sense upon the Brain , which motions are presented again singly to the common Sensorium . V. Whether the Dogs make any rational choice in following their Game . Dogs oftentimes having lost the Scent , are at a stand , and if it happen that there are several ways or paths , for example three , having by the smell try'd two , they fall into the third without any demur , not in the least doubting , but certainly assured that the Deer or Fox hath taken that course . This Action , which seems to carry some semblance of Reason in it , is only the work of a Corporeal Organ . For the Dogs , while they pursue the Deer with extraordinary earnestness , it may possibly happen , that they may make but a slight search in the first Path , and then leaving that way betake themselves to the search of the others , but finding therein no tract of the Beast , may lastly return again to the first , wherein the Scent being recovered , and all demur set aside , they follow the track , and at length catch the Beast . VI. How Dogs know their Masters from other Men. Dogs in a mixt Company of men , keep close to and follow their own Masters , as knowing and distinguishing them from other Men. Of this there can be no other reason given , than because from divers persons different exhalations arise , which the Dogs discerning , are affected with none so much as those which exhale from their Master , as being longer accustomed to them . For these particles exhaling from the Body of the Master , so affect the Fibrils of the Nerves that are extended into the Dogs Nose ; that thereupon there follows such a concourse of the Animal Spirits into the Muscles of the Dog , as disposes him to fawn upon his Master . VII . How Camels are taught to Dance . Camels , that delight very much in Musick , are oft-times taught to dance : Some have been seen to keep exact Time and Order in their movements at the sound of a Drum , sometimes in a round , sometimes meeting , sometimes falling off . Their manner of Institution in this faculty was thus . When they were yet young and tender jointed , they were shut up in a Hot House , whose Pavement was on purpose heated ; then just before the Door there was a Tabour or Drum beat , mean while the Beasts not well-induring the heat of the Floor , lifted up sometimes one Leg , sometimes another , and by such a continual motion , were forced to bestir themselves . This exercise being thus continued for divers Months , they were so accustomed to it , that when-ever they came in publick , and were brought forth into the open Air , at the sound of a Drum , on purpose beat , they lifted up their Legs according as they had been accustomed , but with a motion somewhat more regular than what they had been used to , as being now more unforced , and so framed a compleat Dance in exact time and measure . VIII . Whence proceeds the diversity of tones in Hens . A Hen , when she calls her Chickens , Clucks , when she warns them to flight by reason of the Kite , she holds it out longer and advances it louder , when taken she vehemently , and , as it were , repeats a sobbing tone : When she laies an Egg , she Exults or Cackles ; when she hatches her Eggs to produce the Chickens , she utters a rougher , thicker and slender tone , than when she calls them to her ; when she broods over her Chickens , she uses a lower and more depressed voice , and different from all the rest . This diversity of sounds which is observed in Hens and other Animals , proceeds from their various affections or passions which move them and alter the disposition of their Body . For whereas the Voice is produced by the emission of the Breath out of the Mouth , through the Aspera Arteria . It is apparent that according to the various disposition of the Instruments which conduce to the forming of the Voice ; peculiar Voices or Sounds must needs arise . And since according to the different passions wherewith they are moved , the Organs obtain a different disposition : Hence it comes to pass that Animals utter different Voices , and signifie by various Tones their trouble or delight ; which Sounds being conveyed to Animals , either of the same or different kinds , variously affect them . So the Howling of a Baboon , toles the rest of that kind , tho' remote from him , and calls them to his Aid . So a Hog , when he is set upon by Dogs , by his loud grunting and crying out , calls the neighbouring Hogs to come and help him . So a Hen by its different pipations , signifies its various passions , according to the various disposition of the Vocal Organs , which the predominant passion produces in its Heart . So that whoever will penetrate into the Nature of Brute Animals , and dive into their most hidden affections , may easily and without labour discover the reason of their several Cries and Vociferations , and unfold by what motion of the Heart they are impelled ; as I have more at large made out in my Dissertation of the want of Sense and Knowledge in Brutes . IX . The reason of the Crnft used by Hares to avoid the Dogs . Hares , the better to elude the quick Scent of the pursuing Dogs , confound their Tracks , by shifting and traversing from one course to another , and most especially they avoid shrubby and brambly Places , lest by rubbing off their Hairs against them , they should afford the stronger Scent to the Hounds as they pass by . Sometimes they betake themselves to Hedges , where they lie and skulk ; sometimes they run into the midst of a flock of Sheep , that so the scent of their Bodies may be drown'd and lost by the overpowring scent of so many other Bodies : Nay if they are overmuch pressed by the Dogs , they come back the same way again , or by a huge leap bounce into their Cave or Lodging . All these tricks which are ascribed by some to the Craft and Policy of the Hare , are only the effects of their Fear . For what can be more obvious to Hares , when the Hounds pursue , than to have recourse to places of retreat , and by their shelter to preserve themselves from their Enemy ? When there are no Woods to fly to , haply Herds of Deer or Flocks of Sheep present themselves to Eye ; thither then immediately they run , and intermingle themselves for refuge , till by the cry of the Hounds they find themselves freed for the present , and so continue their flight homewards ; or if they take their flight , as soon as the Dogs are in pursuit , it is to be imputed to their fear . By which the Spirits of the Brain being agitated , will not suffer them to sit down in quiet , and neglect the imminent danger . As we see in persons tired and wearied , who not having an immediate opportunity of resting , are forced still to keep moving a little ▪ by reason of the commotion of the Spirits , which haply is the cause that Hares by reiterated Vaultings , leap to and fro , and springing high in the Air , recover their abodes : Nor can there be any other reason given why tired Hares make so many windings and turnings , oft ▪ times repeating the same Tracks over again ; but because hurried with overmuch fear , they become affected with great distraction ; and are thereby diverted from their first intended course , unless the Hounds in their close pursuit are so inevitably hard upon them , as to force them back into their first Path. X. How Birds with such Art and Order build their Neasts and bring up their ●oung Ones . Birds are indued with wonderful ingenuity in the bringing up of their Young ; for presently after Copulation , their main business is to build their Neasts ; they pick up Moss , Chaff , Straws , Feathers , &c. with which they build their Neasts round ; and having laid their Eggs , they sit upon them , hatch their Young , and in a short time teach them to fly . All these things may be effected without the help of Reason , for it is certainly natural and innate to Birds to couple at certain set times , and to this they are impelled , either by the Season of the year , or by the Meats upon which they feed ▪ Likewise certain it is , that Eggs are produced from Copulation , which being shut up in the Belly of the Female , cannot but be burthensome to the bearer of them ; as soon as they are arrived to any magnitude , whereby it comes to pass , that desiring to unburthen themselves of them , they choose a place fitting wherein to lay them , and underlay it with the softest things they can procure , and which are especially grateful at that time by reason of the weight of the Eggs ; and all this by no other conduct of Reason than Cats and Dogs make use of , when upon the approaching time of their Whelping or Kittening , they seek out a place commodious for the bringing forth of their Litter . The Eggs being laid , they sit upon them , by reason of a certain contexture of the Fibres at that time whereby they are disposed hereunto , as we see in Hens , which at a certain time of the year ; sit cowring on the ground , as if they were sitting over their Eggs , when as indeed there are none under them ; which plainly shews , that at that season they are affected with a certain indisposition which brooding eases and removes . Whence it appears that all these things are not effected by Ratiocination or Cognition , but by the motion only of the Spirits , and the disposition of the other parts of the Body . In like manner as artificial Fountains , Clocks and such like Automata , wrought by Human Ingenuity , which perform many things that cause wonder , and all by the orderly structure of their parts only . XI . How the Castor bu lds its Cottage . The Castor or Beaver , an Amphibious Animal in Virginia , thus fortifies it self against the force of the approaching Winter ; they choose a place upon a declining ground near a Rivers side , against which with great Industry and Labour , raising a kind of Bulwark with Turf , Boughs of Trees and the like , they stop the course of the water , and make a little Lake or Pool ; and about the Head thereof they choose a little rising Hillock whereon to build a Cottage or little House ; on the topmost part whereof they leave an open Portal for the Air , here they lay up Boughs cut from Trees , on which they feed ; moreover digging Mines under the water to pass to and fro , when and where they please , they bid defiance to all the Hunters Arts. XII . That there is no more of Cogitation in Brutes than in a Vine , or in the Stomach . And all this may be performed both by Beavers and other Creatures without the help of Councel or Rational Cognition , but by a certain blind impulse of Nature ; for if Cognition be allowed of in these Creatures , it may as well be allowed of in a Vine , which as if it foresaw its inability to sustain its future burthen , hath recourse to the Elm , which it catches hold on for a Prop to bear the load of those heavy Clusters it must hereafter bring forth , and winds about it with its wreathed tendrels , as with so many grasping Hands : Or as in the Stomach either of Man or Beast , wherein the Aliment is so digested , as if by foresight and design there were made a distinction between the profitable and unprofitable Juice , and a distribution ordered accordingly , part being sent out to the intestines , part to the Heart , thence to be conveyed to the Limbs and Head , according to the several occasions and necessities of each part . And certainly since the fore-mentioned Animals , build their Habitations , and manage all other affairs by the same impulse ; it is a great argument that this proceeds from Nature , that is , from the disposition of the Organs , rather than from any rational Cognition . XIII . How the Remora puts a stop to Ships in the Sea. The Remora retards a Ship under Sail , and stops its Course . An instance whereof we have of a Ship of Francis , Cardinal of Turon , sailing from France , and stop'd in its mid course , from the Relation of Petro Melata of Bononia . This so great force of the Remora baffles the subtile apprehension of all the Philosophers I ever yet read of , who frankly acknowledging the slenderness of their understanding , profess themselves wholly ignorant of the cause of this so stupendious a matter , and have nothing but that Asylum of Asses to have recourse to , their Occult Quality forsooth : Nor is it without Reason that they are at this loss ; for indeed it must be a very difficult thing to be resolved of the Reason of a thing that never was . For if the Writings of Authors that make mention of the Remora be seriously considered ; it will plainly appear that what they delivered concerning it , depends not upon their own Testimony or Opinion , but is taken upon trust from others . Whence ARISTOTLE in his 2 d Book of Natural History , having delivered all he had to say concerning the Nature and Qualities of this Creature , adds at last , as some relate , PLINY writes in his 9 th Book ; This Creature sticking to the Keel , the Ship is supposed to move the slower : And Plutarch in his Symposia , Some , saith he , there were who laught at this tradition of the Remora , as an Idle and Fabulous Story . And many others there are , too long here to recount , who believe the Story of this Fish to be but the subject of an Idle Fiction imposed upon the credulity of Mankind . But that Ships have been hindred on a suddain from Sailing is not denied . Must therefore a little Footless Fish , which according to Aristotle , is but a kind of Murex or Purple Fish , and like to a Snail , effect so great a wonder ? Why may we not as well impute it to a suddain Ebb of the Sea ; such as in the Bay of Sicily divers have had experience of , by which Ships in their full career of Sail have on a suddain been retarded and rendred wholly destitute of Motion ? Who knows not that very vehement gusts of Wind sometimes break forth in a moment from the bottom of the Sea , and with a vast force drive against the Stream ? Do not such accidents as these suffice to retard Ships under Sail , without the help of a poor despicable little Fish ? Doubtless they do , and I cannot but positively look upon them as the real cause of the Ships immobility . Besides if the Remora be able of it self to act such a wonderful thing , why may it not as well do the same being received into the Ship ? Since it is reported of it , that it hath been by the Mariners taken sticking to the Rudder , and brought into the Ship. Which was the very observation of the Emperour Cajus , who sailing from Astura to Antium , when a Remora that was said to have stuck to his Gally , was taken and brought into it , wondred why it could not then as well do the same thing , and transfuse its virtue as well within as without . XIV . How Brute Animals come to presage appr●aching Weather . Brute Animals foretel Winds , Fair Weather , Rain , &c. Hedghogs drawing in their Quills , are a great sign of Stormy Weather ; Halcyons betaking themselves to their Neasts ▪ betoken a Fair Season : All tame Foul , as Ducks , Geese , Game-Cocks , &c. give certain presages of change of Weather . This faculty they have from a perfect disposition of their Organs . For since there are in the Air certain prognosticks of future Weather , Brute Animals by reason of that vigour of some Senses more than others , with which they are indued , more easily presage those Seasons than Men , whose Imaginations are taken up with variety of Objects , and whose common Senses are not altogether so sharp as those of Beasts . However they cannot properly be said to foretell any more than Warts on a Mans Toes , or Limbs out of joint can be said to be indued with praescience , or the knowledge of future things . XV. How Mens Bodies presage Storms and wet Weather . Whatsoever Dislocation , Fracture or Solution of Parts happens to be in any Member of the Body , portends by a greater pain at that time than any other , a Stormy or Wet Season ; but especially that Venereal Distemper , that with a far more exceeding pain attends persons of a lewd and incontinent course of Life : Forasmuch as these Men , when the Northern Winds begin to blow , are sooner assaulted with those pains , in regard at that time their Nerves are intended and their Muscles grow stiff , and are cruelly tormented with those vitiated humours that are rivetted in the Members ; for in these parts chiefly lurks the said Distemper , which influenc'd by the Season , exercises a kind of butchery in the inmost recess of the Body . By the same sensibility of Weather , Frogs Croaking more than usually ; Swine routing in a bundle of Hay ; Cows and Oxen holding up their Snouts to the Sky , and snuffing , presage Rain from the humidity of the Air. CHAP. VIII . Of the Aversion and Affection of Animals . I. Whether the Basilisk be Mischievous in its looks . THE Basilisk hath that kind of pernicious Venom , that it is said to destroy a Serpent , tho never so great , by breathing upon it : Nay , if credit may be given to Historians about this matter , if it espy any Man approaching to its Cave , it kills him with its looks . I cannot easily perswade my self that the Basilisk can prove so mischievous to Mankind with its Eyes only ; for how should it come by so fatal a malignity in its Looks ? With what a vast force must Rays be darted from his Eyes , to pierce quite through the whole Body of Man , and destroy him even at a distance ? But I am rather apt to believe , if what is reported of the Basilisks fatal presence be true , that the killing stroke he gives , proceeds not so much from Spirits darted from his Eyes , as from the pestiferous blast of Breath blown out of his Mouth . Since it is certain , that he causes Trees and Shrubs to wither and die ; breaks Stones , blasts Herbs , and that not by contact only , but parches and burns them up by his Breath . Hence all other kinds of Serpents dread and shun his poison , and fly him as a Common Enemy of all Creatures : And as such a one Lucan describes him in his 9 th Book , where among other things of him he saith , Lord Paramount he reigns of th' empty Sand , And from him drives all Creatures near at hand . II. The same is done by Dragons . Well therefore may such a destructive Breath as this , blown out of his pernicious Mouth , and lighting upon any Man as he chances to pass by , penetrate through his whole Substance , by its subtil and virulent quality , and by inverting the contexture of the Fibres , so afflict him , as to render him less capable of performing the Offices of Life . The same is related of Dragons in the time of Philip , King of Macedon , for that the Soldiers passing through two Mountains , fell dead as they marched . The Reason ▪ as Socrates reported was , that by his prospective Glass he discerned two Dragons , one upon each Mountain , breathing forth their Venemous Breath one against the other : By the power whereof whatsoever went between escaped not Death : For this story we have the authority of Libanius De Origine Rerum . III. O● the Be●●ming ●●sh . There goes a Story of a Fish in the Island called Cay●nne , not much unlike a larger sort of Eel , which by touching the utmost end of the Fingers , or the very Staff or Stick held in the Hand , strikes a numbness through the whole Arm , and the parts near about it , accompany'd with a kind of Scotomy or heavy dimness of Sight . It is also related of this Fish , that to make a prey of other Fishes , and prepare them for his Tooth , he strikes them with the extremity of his Tail , and so benumbs them into an irresistance . This Mischief is to be imputed to the virulency of those Breathings , Evaporations and Effluviums which proceed from these Creatures ; much like those that steam from Aqua-Fortis , Quicksilver , and such like sort of Minerals . IV. Why the Lion dreads the Voice of the Cock. The Elephant that of the Sow . So great is the Antipathy between the Cock and the Lyon , that the noise of his Crowing , or the very fluttering of his Wings strikes a terror into the Lion. The Elephant starts at the grunting of a Sow , and tho' the strongest of all Beasts , trembles when he hears that noise . This Aversion in both these Creatures proceeds from such a Contexture of the Organs , as that the noises of the Cocks Crowing , and the Sows grunting , being conveyed to them , pierce their Bodies with a sort of Vellication , and as it were rend them a sunder with a kind of sharp smiting violence ; insomuch that being received into their Ears , they open the Pores of the Brain , not only into the Muscles , that serve for the moving of the Members , but also into those Fibres of the Heart that conduce to the exciting of Fear . Who knows not that the grating noise of a Sow is very harsh and ungrateful to the Ear ? In fine , therefore it is that a Lion trembles at the Crowing of a Cock ; and an Elephant is affrighted at the Grunting of a Sow , because their Organs are so disposed , that they cannot receive in those sounds without great trouble and offence . V. How it ●●mes to pass that Elephants cannot endure the ●ight of any thing that appears Red. To the same cause we may refer that which is related in the History of the Macchabees , namely that Elephants loaden with Wooden Towers full of Armed Men , at the sight of ruddy colour'd Grapes or Mulberries , were so exasperated thereby , that they could not forbear rushing into the midst of the Enemy , without regard either to their own or their Charges danger ; and all upon this occasion , that Elephants have their Eyes so disposed as to be ill affected with Red , or any Colour inclining thereunto ; and by certain Rays flowing from such a Body , to have those passages of the Brain dilated , which open those Fibres of the Heart that conduce to the exciting of Rage and Fury . VI. The reason of the Aversion between a Camel and Horse , Cat and Mouse . A Camel and a Horse have great aversion to each other , so that these two Creatures can by no means be brought to live together without extraordinary dissention and hostility . The Weesel abhors the Toad , and comes not near it , but with great reluctance . The Mouse flies the Cat as its mortal Enemy . The Pheasant designs against the Hart , and to do him a mischief sits upon his Back , twitches up his Hair by the Roots and pecks his Flesh with its Bill . The Peripateticks express all these Enmities and Aversions by no other name than that of Antipathy , thinking they have discharged themselves very well , and given a sufficient explication , when they tell us , that it is a certain natural hatred between one Animal and another , by which they fly and abhor each others sight . But who is there so ignorant as not to understand that we are not one jot the wiser by this Answer ? That there is a dissention and hatred in several Creatures one with another ; but how this enmity arises , or in what motives it is founded , certainly it can be no otherwise than from some passion transmitted into the Brain , through the external Senses by the help of the Nerves . For such is the disposition of the Brain , and such the contexture of the Fibres in Animals , that from such a species proceeding from without , such an affection must needs arise , no otherwise than as Heat hardens some Bodies , and softens and melts others . And hence it is that the smell of a Camel so disturbs the Brain of a Horse , that it renders him wholly unfit for service in the War. The evaporations only of Effluviums from a Horse , hath such a power over an Elephant , as to drive it into a frantick rage , which effect can certainly be Imputed to nothing but such or such a disposition of the Organs , or contexture of the Fibres . And much after the same manner it is that a Blood-Colour disorders an Elephant : The smell of a Panther attracts Apes , and Fear seizes a Lion at the sight of a Cock. VII . Whether a slain Body bleeds a-fresh at the sight of the Murtherer . Blood is said to gush out of a Wound , tho' bound up , upon the approach of the Person that gave it ; and the Lawyers of some Countries take it for more than a half proof of Murther , when in the presence of any suspected , the Body of a slain Person begins to fall a bleeding a-fresh . Lemnius in his 2 d Book Of the Occult Miracles of Nature , assigns no other Cause to this Effect but Imagination only . So great , saith he , and powerful is the force of hidden Nature , and so strong is Imagination , that so long as any spark of Life is left , and the slain Body not quite cold , the Blood may possibly gush out a-fresh , and boil by means of the Choler 's retained heat . Others refer it to the Antipathy that is between the Carcase and the Murtherer , as if there were still remaining some strugling of the Spirits , somewhat like to that which struck the horror at the time of the Murther . But these Examples carry little weight with me who look upon the thing as dubious ; and if I may take the boldness to contradict so many Assertors of this accident , altogether false : Forasmuch as I my self have seen the Dead Body bleed at the Nose and Mouth after three or four days , when the Murtherer hath not been present , nay , not living . Besides , I presume there has scarce been any one heard of that could confidently attest upon Oath the truth of the thing , but rather relied upon the credit of Relaters or authority of Writers . But let it be granted sometimes to happen , that in the presence of the Murtherer , a Murthered Body may fall a bleeding ; must therefore the Presence of the Murtherer be immediately concluded from this accident of the Bodies bleeding , or at least a suspicion thereof be implied ? Why may not the said accident of bleeding be rather imputed to Natural Causes , a thing indeed scarcely to be avoided , if all things which commonly happen about these Dead Bodies be well examined . The Body is carried into a Room where there is generally a great confluence of Spectators . By the breath then of so many Men the Air must needs be heated , and the Blood , tho' cold , be excited by this warmth , and consequently some small quantity of it may break forth out of the Nose or Mouth . From all which may be concluded how weak a testimony this bleeding is , and how slight those determinations are which Judges have made about the presence of the Murtherer , unless we assert with PLATO that the Souls of Persons murthered persecute those by whom they have been deprived of Life . Thy Ghost I 'le ever haunt , where e're it is ; Thy Soul , Bad Man , shall dearly pay for this . Virg. 4. Aeneid . VIII . Beasts have an aversion to the killers of their Kind . Beasts have a notable aversion to the Killers of their Kind , and to the utmost of their ability prosecute them : I have wondred , when being some time in the Country , I have observed all the Swine , and even the very Pigs of a certain Village grunting out their Clamours against one Passenger particularly more than others , and as it were preparing to set upon him ; and asking the reason hereof , was told that this person was a Butcher , imploy'd in the killing of all the Hogs and Pigs of the said Country Town . This Aversion of the Swine might very well be caused by the smell of the slain Hogs , or of some of the blood that stuck upon the Butchers Cloaths , which being corrupted and debased from its natural temperament , offended their Sense , and begat a certain horror in them . For it is not to be doubted but that the degeneration of any thing from its natural temperament , makes an ungrateful impression upon Animals , especially if it be from those of the same kind , and hurts and offends them much more than if it proceeded from those of a different kind . IX . Why some Insects have an aversion to Oil. If the Bodies of certain Insects , especially of the Silkworm , Grashopper , Bee , Locust or Wasp were so besmeared with Hony or Oil , that the black specks , running along their Bodies , were all covered , they would presently die , nor could they by any Art possibly be recalled to Life . The Reason is , as Malpighius very well observes , because Insects have not only Lungs as other Creatures , but are so abounding with that sort of Bowel , that every Section of them is furnish'd with double Lungs : Nay , those blackish Holes are as it were so many gaps , which lead to so many rough Arteries which convey the Air into the Heart , Spinal Marrow and other Internal parts ; so that no wonder if upon the stopping up of their Orifices , the said Insects or little Animals perish and die for want of respiration . CHAP. IX . Of Sleep and Waking . I. Why Infants are most chiefly addicted to sleep . INfants and Children soon fall asleep , and being in a sound Nap , sleep long and are not easily wakened . Children are very much abounding with moisture , with the thickness whereof the Pores of the Choroidal Contexture , and the Arteries called Carotides are somewhat streightly closed and shut , and consequently afford not a very free passage to the Animal Spirits . For as we see sometimes the Sails of Ships slack and lank , when there blows but a gentle gale of Wind , not strong enough to stretch and expand them ; so when there is not so great a plenty of Animal Spirits proceeding from the Heart as to fill the Marrow of the Brain , and to keep all its passages open , Sleep must needs arise . Since then in Children and Infants , Humours very much abound , the Motion of the Animal Spirits is by the resort of them to the Brain , much diminish'd , and the Pores of the Brain apt to be obstructed . II. Who they are that soonest fall asleep . Hence it comes to pass , that they who have a more than ordinary Cold and Moist Brain , as persons of a decrepit Age generally have , soon fall a sleep . On the contrary , those that are of a more dry and hot temperament , pass many times whole Nights without sleep , and being vigorous and in the prime of their Age , are satisfied with a smaller portion of sleep than Children or old People . III. Why we fall sooner asleep sitting by a Fire , than in another place . We Sleep sooner lying down than in any other posture , and sooner by a Fire than elsewhere . That we sooner sleep lying than otherwise , is because our Heart is then parallel with the Horizon ; whence it comes to pass , that the Blood proceeding from the sinister Ventricle of the Heart , passes to and fro with an equal force , which , when we stand or sit , it cannot do , for then the more subtile part of the Blood only ascends ; so that in regard the grosser part is conveyed to the Head through the two Carotides , and the two Vertebral Arteries , consequently the fewer Spirits are from thence generated ; the want whereof causes an inclination to Sleep . But that we sooner than ordinary sleep by the Fire , is because the Pores of our Body are much enlarged by the fiery particles , so that our Body becomes like a course Sieve or Cullender , by reason whereof the Animal Spirits take their flight the faster ; thus the Body tired and debilitated , drops at last into a sweet sleep . IV. How Tobacco taking , both procures and drives away sleep . It is vulgarly affirmed that the smoaking of Tobacco both induces sleep and drives it away ; and that it both excites and expels Hunger and Thirst . The Reason is , because the Animal Spirits being stroak'd , and as it were led into a Dance by this sort of Fume , grow absolutely deaf to all troublesom accidents ; nay , whatsoever of difficulty lies upon them to be done or suffered by them , they go through with ease and undisturbed : Wherefore to Soldiers and Mariners the use of Tobacco is a thing not only of advantage , but almost of necessity , forasmuch as it renders them undaunted and fearless , and ready to undergo all dangers , patient of Hunger , Cold and Labour ; as gently raising and exalting , and as it were tickling the Animal Spirits to quick and expansive motions , and is a recreation to them , no less than the carousing of full Glasses of Wine to others . V. Poppy , Saffron , &c. cause sleep . Poppy , Saffron , Mandrakes , and the like stupefie , benumb and lay asleep those that take them . The Reason seems to be , because Plants of this Nature are full of a very Uliginous or Clammy sort of Juice , with which the Pores of the Choroidal Contexture , being stopped , are disabled from conveying to the Brain the Spirits proceeding from the Heart . For as some Plants are obstructive to the Spleen , others to the Liver , and hinder them from performing their usual office ; so the Poppy , Mandrake , Saffron , &c. have a sensible power of obstructing the said Contexture , and causing fewer Spirits to be transmitted from the Heart to the Brain . For all Somniferous or sleeping things , whether outwardly applied , or taken inwardly , infuse a certain moistning all over the Body , and so induce a Refrigeration or Cooling , by which the abundance of Spirits is diminish'd , or their motion retarded . By the like Reason , those who are troubled with a Catarrh or Rheum , are apt to fall asleep , and to be opprest with a kind of stupidity or heaviness , by reason of the abundance of Humour which lies about the Fountains of the Nerves and stops their passages . VI. Why Baths excite to sleep . Balneo's generally cause sleep in those that use them . This they do , not so much from the immediate virtue of Bathing , but so far as they communicate to the Humours circulating through the Pores certain sweet particles proceeding from those emollient Herbs infused in the Bath , whereby it comes to pass , that the Blood is somewhat restrained , and disturbed in its over-violent Career , so as that it drives not into the Brain with so much vehemence as before , nor is there so great a quantity of Spirits to be discerned , from the want whereof sleep arises . VII . How the L●●hargy induces sleep . Certain Diseases , as the Lithargy and others , create in the Patient an excessive drousiness , and at length plunge him into a deep sleep . And this by reason that the proximate cause of this affection is the obstruction of the Pores of the Brain , proceeding from a gross Humour , and the want of Animal Spirits immerst in the overflowing stagnation of Humour , by which means those affected with this Distemper , must needs be apt to fall asleep . And such a sleep it is , that it may be accounted not only the Chain and Fetter of all the exteriour Senses , but also the Oblivion of all things . Wherefore those that have taken in the Infection of the Plague , if they are of a sleepy Constitution , and give themselves up to repose , become the more deeply infected , and Nature is the less able to resist the Contagion . Moreover , those that have drunk Poisoned Potions , if upon the drinking of them they are overtaken with sleep , they suffer in a higher degree , and the Poison the sooner reaches their Vitals . Because too much evaporation oppresses the Natural Faculties and renders them dull , heavy and uncapable of overcoming the Evil. VIII . Why the Cock wakes at Midnight . The wakeful Cock certainly shakes off Sleep about Midnight ; Whence MANTUAN , The Bird that 's sacred to the Sun 's bright Ray , Bids Night adieu , salutes th' approaching day . Cicero in his 2 d Book of Divination judges DEMOCRITUS to have most excellently explain'd the reason why Cocks Crow before Day , as follows , The Meat being gone off from the Stomach , and dispers'd into the whole Body , the Cock , saith he , in the silence of the Night , having digested his Meat , and being satisfied with rest , to express his content , lifts up his Crowing Voice , and displays his Gay Wings . But with this opinion of Democritus I am no way satisfied . Because if the Cock rowses from sleep , and Crows after Midnight , by reason of the digestion of his Meat , it should follow from thence , that afterwards he would no more indulge to rest ; but this Experience contradicts . Besides , he Crows as well at Noon , being full , as also after treading of the Hen ; so that this Reason might better be given , namely , that the Sun having past the Nights Meridian , and now steering towards the Morning , agitates and drives before him a cold Nocturnal Gale , by the shuddering approach whereof the Cock being roused out of his sleep , flutters with his Wings and sets a Crowing . Or why may we not affirm , that certain times are allotted to all Creatures for sleep , and this particularly to the Cock , at which by an innate motion it wakes , and having its Spirits in agitation , sets a Crowing , and by his Crowing testifies his wakefulness ? For why may not the Spirits of the Cock , as well as of a Goose , or any other Bird of that Nature , inclosed in the Brain , excited either by its own abundance , or by some external murmuring noise , so open those passages in which the said Spirits use to have their course from the Brain to the proper Organs of the Senses , as from the Center to the Circumference , as by a concourse made to move the Nerves attendant to the foresaid motions ? IX . Why we are most apt to be sleepy after Meals . Soon after Dinner or Supper we are more apt to fall asleep than at other times . Whence many have taken up a custom of setting themselves to sleep after Meat , to which Custom Nature seems to invite , and few can put it off without much reluctance . The Reason is to be derived from the very concoction of the Meats ; for when at that time a cruder Chyle from the Stomach and the Intestines is mingled with the Blood , and hinders the rarefaction thereof , it must needs follow that the Brain , by the loss of Spirits , is refrigerated at that time , and so contracts a certain sleepy disposition , so that the Spirits which remain are scarce sufficient to keep the passages of the Nerves open and tite : Hence we find by experience , that the external parts of the Body are after Meat refrigerated , so that the Head hangs down , and the Eye-brows fall , if we do not rouze and set upon some serious affair , and find work for the Animal Spirits . X. How it comes that we are more apt to wake out of our Sleep by Night than by day . Sleep is not so easily broke off by Day as by Night , as we find by experience in the Spring and Summer , in which , by reason of the Suns light coming in at the Chamber Window , we are more difficultly rous'd from Sleep than in the Winter when the Sun is at a distance , and we are surrounded with Mist and Darkness . This proceeds not from Light , as from the effient Cause ; as if Light were indued with a faculty of procuring Sleep ; but only by accident , forasmuch as our Eyes , being weak , and smitten with sudden cold , are apt to wink , and at last to close and be quite shut : For when we open our Eyes , the Light comes upon them , and smites them , and they not knowing how to send back the Rays , are offended and disturbed to be so smitten by them , shut down the Eye-lids again , and betake themselves immediately to a renovation of Sleep and Repose . Hence it comes to pass that waking at broad day , and opening our Eyes , we feel a kind of force and pain in so doing ; in regard the Light smites not the Retine Tunicle by degrees , but all on a suddain . XI . Why the extream parts of our Body are apter to be cold in sleep than when we are awake . When we are asleep , we are more apt than at other times to be cold in the extreme parts of our Body , but hot within . This most probably proceeds from hence , namely , for that the Blood not being at that time agitated by any passion , or any violent exercise , flows so quietly that it hath not force enough to convey any heat to the extremities of the Body , whence they become cold , at least in those persons whose Lungs are in a good temper : But for those that are troubled with bad humours , or are Asthmatick , they cannot indure to lie covered , by reason that the heat which they bring upon themselves by being covered , very much augments their inward heat . XII . Why those that lie ●ll at ease , are easily wakened . Those that lie not at ease , by reason of the Sheets not lying smooth under them , or the hardness of the Bed , or a necessity of making Water ; are very often interrupted in their Sleep , and forc'd to lie awake a long time . The Reason is , because the Animal Spirits which are bred during Sleep , and continually repair'd by the motion of the Blood through the Heart , can have such a plentiful confluence , as that having thereby the power of opening the Orifices of the Nerves , they fill them in such a manner as is necessary to extricate their Filaments , and give occasion to the Soul to perceive those Objects : For whatsoever gives disturbance to any sense , and interrupts the usual rate of motion , is an absolute Enemy to all Repose . XIII . Why attentive reading after Meals , induces sleep . We find by experience , that when we are very attentive in Reading or Studying presently after Dinner or Supper , we are apt to fall asleep , but not in the least when we are present at the acting of a Comedy , or the sight of any thing that moves to Laughter . The Reason is , because any studious attention , or serious exercise of Mind , draws the Blood more copiously toward the Head , and gathers it together from all parts of the Body towards the very midst of the Brain . By which means it comes to pass , that upon the Blood penetrating the Brain there follows a great recourse of Nervous Juice that way , by which the Spirits are presently obstructed , and their intermediate places taken ; but it falls out otherwise , when after Dinner we repair to a Comedie , because then the Animal Spirits being diffused with pleasure , distend and enlarge the Brain ; so as that the passages being streightned by that inflation , stop the course of the Sopori●erous Humour , and hinders it from forcing into the Brain . XIV . How Coffee happens to drive away sleep . Coffee is said very much to keep away sleep , and procures an extraordinary disposition to wakefulness , and an unwearied exercise of the Animal Faculty ; forasmuch as upon the drinking of this Liquor any one may sit late at night for the carrying on of any Studious Contemplative or Wakeful business . This effect in my Judgment may very well be imputed to those adust particles of the Coffee , which mingling first with the Blood , then with the Nervous Juice , keep by their agility and restlesness the pores of the Brain open , and the Spirits having now shaken off all Curb or Bridle , are prick'd as it were with Goads and Stimulations to the longer and more continued performance of their Offices . In like manner the Cause of a very wakeful temper may be imputed to a torrid and Melancholick Blood which supplies the exteriour Brain with such a sort of Nervous Juice as is parch'd and fill'd with adust particles , and is neither fit to remain longer within the pores of the Brain , nor kindly to receive and contain the Animal Spirits . XV. In what the excess of Coffee is hurtful . This kind of Drink , tho' of very common use , and in some cases very wholesom and medicinable , yet at other times , and in other cases it may be hurtful and unwholesom ; and this not only Reason , but also common Observation tells us ; forasmuch as excessive drinkers of Coffee are very often Lean and Paralytick , and many times unapt for Generation : In regard , since the Blood , by the frequent and excessive use thereof , becomes in a great measure acid and adust , it is consequently the less apt and capable to nourish . XVI . How it is that Children are rock'd asleep by the motion of Libration . In Children Sleep is procur'd by the motion of Libration , so called , or rocking in a Cradle . The Reason is , because this rocking to and again stirs the Humours of the Brain ; by the access of which Humours to the Brain and Origin of the Nerves , Obstructions are created : As when any sort of Liquor is injected with a force upon whatsoever Object is capable to receive it , it sinks in the deeper , especially if the Body into which it enters be tender and soft , as the Brain of Children most certainly is . XVII . How some duly come to wake at set hours . Some wake constantly at set hours . This comes to pass , partly by reason of daily custom , and partly because at certain set hours those men have sufficient plenty of Animal Spirits to puff up the Tubes of the Nerves , and also the Muscles ; as appears in those that are more hungry at some times than others : Of which there can be no other reason given , than because by that set time the Blood has made several circulations through the Heart , and by that means hath obtained such a due degree of acidity , as is requisite for the exciting of Hunger in the Stomach . XVIII . How many hours are to be allotted for sleep . As for the time allotted for Sleep . That which the Schola Salernitana hath decreed in this point , is most generally received . Seven hours in Sleep the Eyes to hold , Is long enough for Young and Old. But in this matter a certain set time cannot be appointed to all alike , but rather the different temperament of this or that person is to be consulted . For to those whose Blood is more thin and subtile , as the Spaniards , Italians and French , a shorter time of Sleep is sufficient ; for example , the space of five hours or thereabout , which would be too short for those that have their Blood more gross and viscous , for such Blood should be allowed time to pass often through the Heart before it can be made thin enough to afford matter for the generating of Spirits . CHAP. X. Of the Diseases , and Death of Animals . I. What the Cause of Diseases is in Animals . THERE are no Creatures whatsoever totally exempted from Diseases , but according to their different temperament are affected with some or other Bodily Distempers . Some are troubled with a Shaking or Trembling of their Limbs ; others are in a manner choak'd up with an Inflammation of the Jaws , commonly called a Quinsie ; others are afflicted with the rising of the Lights , &c. The Reason is plain , because Sanity or Health is a certain disposition of the Body , by which it is rendred capable to perform its Offices . So that when-ever the temperaments of the parts chance to be altered , or its Organs to be intercepted , the Order or Course of Nature being hereby inverted , the Creature must needs be deprived of Health , as falling from its primitive State of Body . So the tremour or shaking of the Limbs proceeds from a debility of the Nerves , or some depraved affection which haply some foregoing Convulsion had left behind it ; or by reason of some frigid Humour , which insinuating through the hidden passages , impells the Members to this motion . So the Quinsie in such sort streightens and shuts up the Jaws of some persons , that they are hardly able to breath , much less to swallow any thing , by reason the Inflammation or malignant Humour so wholly takes possession of the Nerves , that they are rendred in a manner uncapable of motion , and scarce sufficient for the opening of the Jaws : So the rising of the Lights is incident to those whose Stomach is obstructed by certain humours . For since the Blood is strained through the Liver , it may very well so happen , that that which is transmitted from the Milt through the Splenick Vessel , or flows from the Mesentery is corrupted and shuts up the pores through which it is to pass . In like manner we may inquire into the reason of any other Disease which is incident to Animals , ever perverting or disturbing their actions , and hindring their faculties from performing freely the offices of Life . II. Whence it is that the pain of the Teeth is so sharp and vehement . The pain of the Teeth is a most acute and sensible pain . It is not to be imagined , that the Teeth have any sense of pain , since they are all Bone and solid : But this pain vulgarly ascribed to the Teeth , proceeds from those Nerves which terminate at their Roots , and the pain is the greater , First , because those Nerves being of a very short extent , so much the sooner transmit the imprest motion to the common sensorium . 2 dly , Because they happen to be overmuch stretcht , whereupon that action of the Internal Object is the more lively propagated . As we may observe in Musical Chords , that those which are stretcht to the highest pitch , give the acutest or highest sound . 3 dly , Because they go right forward without any deviation , by which means the imprest motion is carried the more easily to the inmost parts of the Brain , as appears in the difference between a Rope drawn out into a strait Line , and another laid crooked or winding . But this most acute pain of the Teeth usually ceases upon drawing out of the Tooth , in regard by this means the over-much tension of the Nerves is remov'd , by reason whereof the imprest motion cannot continue to be transmitted so vivaciously to the sensorie . III. Why some Infants die with breeding Teeth . Hereupon it is that Infants die through the excessive pain of Teeth , which when they begin to breed , they by the violence of their crying so excessively shake the Brain , and the Membrans covering it , which are very soft and tender , that all the natural faculties of the Infant are exceedingly disturbed and out of order , whereupon the Milk and Blood become corrupt , and the Spirits bred of them , contract an acrimony , which entring into the Nerves through the Muscles excite them more than ordinary , and cause Convulsive Fits , of which they oft die , because the efforts they make , cause the blood to flow in such abundance into the cavities of the Heart , that they become too inflate , and cannot give it a free course , and continue that circulation which is necessary for Life . IV. Why the Small Pox and Measels are so common . The Small Pox and Measels are incident to all persons , and most especially when they are Children , but if not then , yet at least at some time or other of their Life . This is because they brought into the world some impure particles which lie skulking here and there in some lurking places of the solid parts , and which in process of time are drawn forth from thence by a ferment or peculiar matter of the first Element introduc'd by fermentations , and are pour'd upon the mass of blood in which they excite a violent motion , until at length they are cast out through the pores , and appear upon the superficies like little small Vesicles or Bladders . Those that have but few feculencies stagnating in the Body , are for the most part but lightly invested with them ; those that have none of these feculencies , are never troubled with this Distemper during their whole Life , but there are very few that escape . Those that once have them very much , seldom have them again , which is a great sign that the place which gave harbour to the Peccant Matter , is totally clear'd and empty'd thereof . But those who , who having in their Bodies a plentiful stock of this said matter , yet have put forth but few , are in much danger of being infected with them a second time , if not a third . These Distempers are epidemical , and sweep away yearly , especially out of all great Towns and Cities . V. Whence i● happens that some feel greater pains at one time than another . Many feel great pains returning yearly at some set time , especially such as proceed from old Wounds , or some acute Distempers , which , tho' cured , yet leave a remembrance behind them . The Reason seems to be this , because in the scars which those Wounds have left , the pores are very much altered , both as to their Magnitude and Figure , and wholly different from the pores of the rest of the Body . When therefore any change of Air or Season is at hand , another Aether usually approaches our Earth than before , which rushing into the pores of our Body , easily passes them all , those only excepted which are in the Scar of the Wound , in regard they have a perfectly different Figure from any of the rest ; whereupon the said Aether must needs make a more forcible entrance into the intorted pores of the Scar , and consequently excite a Vellication and Sense of Pain . VI. The Original of the Fre●ch Pox. The Distemper , commonly called the French Disease , had its beginning among the French at the siege of Naples , being till then unknown to all but the Canibals of India . The Cause of this so foul and poisonous a Murrain , the French ascribe to certain Mariners , who coming from Mauritania to the said Siege to vend their Merchandise , sold instead of the Sea Hogs the Flesh of Men newly killed , salted and barrelled up . Which sort of Meat the Soldiers feeding very much on , contracted this Disease , which afterwards spread very much by Contagion , and infected those Women with whom they had to do . Nor is this Reason of the French any way dissonant from truth , since certain it is that the Canibals who feed upon Mens Flesh , are greatly punish'd with this Disease . And History testifies , that the Indians , when first discovered , were known to have this Venereal Distemper frequently among them . Because the Eating of Human Flesh begets foul and fulsom Vapours , by which the Head being wrought upon is Vitiated ▪ and the contexture of the Fibres of the Brain corrupted . VII . Why Men in a Fever are restless . Persons in a Fever are wont to lie all night as if they were sound asleep , when in the mean time they have not one minutes rest , but lie muttering to themselves , and in a very restless condition . The Cause is to be sought from the pores or tracts in the Brain , by which the Animal Spirits are conveyed to the Brain , which are very much obstructed by a certain gross matter which proceeds from the mass of Blood , in regard the Spirits being at that time not allowed their wonted dilatation , a heaviness to Sleep seems just falling upon them ; but by reason of certain acid or aculeated Corpuscles adhering to the said Spirits which put them into motion , It happens that some of them break the way , tho' barricadoed or shut up , and stumble upon each other by an oblique course . Whereupon so great an agitation of them , tho' confused , by reason of the divaricated obstacles , cannot but disturb the quiet and cessation of the Animal Function . VIII . Why in the Palsie the Body drys and falls away . In a Palsie the parts being loosened , pine away , and by little and little consume , till at last scarce any thing is left but Skin and Bone ; altho' the Blood at the same time have a free and plentiful course , and circulates after its wonted manner through the whole Body . The Reason hereof must be supposed to be , for that in this Disease the Nerves are ill-affected , and cannot perform their office , for the Blood is not , as some of the Ancients believed , an adequate nourishment of the parts of the Body , but a certain Juice transfused to them from the Brain , and the Medulla Spinalis , by the mediation of the Nerves . So that since in Paralyticks or those troubled with the Palsie , the Nerves are obstructed , and can no longer supply nourishment ; no wonder if in that Disease the parts of the Body dry and wither , and the fleshy substance falls away . Hence it comes to pass , that those who have spongy and moist pores , by reason of their reception of their greater plenty of Alimentary Juice , grow fat : But those on the other side are apt to be lean who abound with Blood ; yet by reason of overmuch heat , have their passages straight , and their Nerves not wide enough for the drawing in of Juice . IX . How some Diseases come to be more tolerable than in former times . The Elephantiasis , or vulgar Leprosie , as also that which is called Stomacacce and Scelotyrbe , are now much more mild and gentle than in former Ages , in which persons were wonderfully tormented and felt intolerable pains . The Reason is , either because the rigor of the Distemper is much taken off by powerful Medicaments now better known than formerly , or because Nature accustomed to those Distempers , hath induc'd such a Callosity , that they seem now more tolerable than of old , and so much the more tolerable by how much they have been the longer indured . The Reason whereof may possibly be , because the Ardour and Ebullition of the Distemper is diminish'd . Or else Nature accustomed to a pain of so long continuance , ceases any longer to struggle so much with it , as being now familiar , and as it were domestick : Or Lastly , Being nourished even by those corrupt humours is the less offended by them . For even as those nasty sorts of Fellows that empty Houses of Office , and cleanse Sinks and Common Sewers , are made by long custom unsensible of the filthy smell : So those that are diseased , for examples sake with the French Pox , after they are used to it , as if they had lost their Sense , are no longer sensible of the defects of the Body , and debilities of Nature ; by reason that Nature and the Disease grow at last to be of a party and agree together , and the Humours of the one are mixt with the Humours of the other . X. Why Pain increases at Night . When Night comes , pains increase , and are exasperated to a greater heighth . The Reason is , for that the Humours , quiet before under covertures and bindings , are mov'd and stirr'd up , so that those Acid Particles formerly imprisoned , take thenceforth an occasion to Vellicate , more than before the Nervous Fibrils of those parts in which they are fixt . Whence there must necessarily follow a notable aggravation of pain ; as appears in those who are distempared with the Venereal Disease . XI . Why some sort of Fevers begin with Cold. Some Fevers ( or rather Agues , for so they are commonly called in English ) begin with cold , in such sort , that not only the extream parts of the Body are seised with cold , but with a certain kind of Action of Horror , the whole Body trembles and shakes . The Reason is , because Fevers proceed from a certain Humour falling into the Mesentery , or some other part of the Body , which Humour flowing through the Veins , and by that means mixing it self with the Blood , is at length conveyed therewith , to the Heart , which gives an obstacle to the Blood from being heated there , and dilated as before , and conveys that heat which it borrows from the Heart to other parts of the Body . Whereupon a certain tremour must needs arise ; and the Febricitant or Fever-seised Persons be taken with a suddain shaking of the Members : Which yet never happens , but at the beginning of a Fit. For as Green Wood thrown upon a Fire puts it out , or at least opposes , and resists its heat , but being once kindled , sends forth a fiercer flame than any other Wood : So after that the said Vitiated Humour hath been for some time mixt with the Blood , it grows hot at length , and is dilated in the Heart more than the Blood it self . And this causes the return of the Fit , which lasts so long , till the said corrupted matter is exhaled and reduced to the natural constitution of the Blood. XII . Whence the diversity of Fevers arises . Fevers , which are so very incident to Mankind , afflict not the Body always after the same manner : For some affect with a continual burning or violent heat ; others intermit ; some return more suddainly , some more leasurely , and some anticipate and come before their usual time . The difference of all these Fevers , arises from the Morbifick Matter which creates the Fit. For tho' that Matter in the former Fit hath been all purg'd away , yet there still remains some fewel or depraved disposition in that place wherein the Humour was first vitiated . Whence it comes to pass , that that which succeeds there anew , is first coagulated , then corrupted , and after some certain time growing to maturity , flows toward the Heart , in the same manner as the former , and creates the same symptoms . Whereupon , if the Morbifick Humour which succeeds into the same place wherein the former was corrupted , wants the maturation of three days , before it mix with the Blood , it produces a Quartan Fever or Ague ; if it stand in need of two only , a Tertian : But when the said matter applies to the Heart with a continual onset , and vellicates or twitches it without ceasing , it induces a Quotidian , or continual distemper . Lastly , If the Blood be so vitiated , that between the time wherein the last drop of the depraved Humour flowed out , and that wherein the first drop of the new gathered Humour began to take its course , it cannot be purified , the Fever renues with a more ardent inflammation than ever . XIII . How a Fever arises sometimes from Pain . Besides all these several kinds of Fevers , Physitians observe that a Fever sometimes proceeds meerly from a previous pain . The Reason of all this we shall soon understand , when we consider that pain hence arises , namely , for that the Fibres of the Parts incur danger of Ruption or breaking , if not Ruption it self . Whence sensation of pain arises in the Mind , which is followed by an immoderate influx of the Spirits into all the Nervous Tribe ; since therefore many little Branches of the Nerves are implanted into the Arteries , and feel the said inordinate influx of Spirits ; hence it comes to pass , that the Arteries are hurtfully smitten and battered , and that the Blood contained in them is wonderfully streightned and pent in , and its mixture confounded and disturbed . And hence it is that the Fever arises . XIV . Why after the fit of a Fever the whole Body i● in pain . After a fit of the Fever we feel a pain all over the Body . Because since the Feverish Heat which uses to succeed the shakings and cold fit , depends meerly upon this , namely , that the Blood by means of this admixture of the Febrile Matter , rises into a preternatural and vehement heat and ebullition , as moist and green Sticks of Wood laid upon a Fire , do not very easily catch , and burn into a blaze , but when they have once taken , cast a most ardent heat above all the rest of the fewel : Hence it is that by this great effervescence of Blood within the Heart , the particles thereof are more subtiliz'd , and as if abundance of Salt were mixt with it , the said Blood makes an irruption into the Fibres of the solid parts , and by corroding them , creates that pain which so afflicts us after the Fit. XV. The Head-ach hath also its accesses at a certain time . The like dissertation we may make concerning the periodical accesses of the Head-ach , which are daily , by reason of the Morbifick Matter rising and boiling up to a heighth at a set time . But so far varying as to be either before or after Meat , according as the offices of Digestion and Distribution of the Aliments are sooner or later performed . XVI . Why sick persons grow lean . Those that are sick of a Fever , and opprest with an excessive and unwonted Heat , Leanness and Consumption attend them . The Reason is , because the particles of the Blood , or Nutricious Juice which are for the nourishment of the Body , and ought to make some stay in the Members , to which they take their course , are more hastily moved and agitated , than to be able to make their due stay , and afford their due nourishment , but either are thrown off by those Members in a nature of Sweat , or pass away by insensible Transpiration ; whence the Body must needs be exhausted and become thin and lean for want of nourishment : Just as Plants are dried up and wither , when by the overmuch heat of the Sun , the Juice assigned for their nourishment is too quickly strained within their pores , and without making that stay there which is required , passes away and drops off . XVII . Whether Diseasescan be known by theUrin . Some there are that pretend to know all Diseases by Urines , as commonly your Quacks and Mountibanks , and some reputed Physitians are not ashamed to undertake the same thing ; nay they go so far as to make us believe , that they can tell the Diseases of each part of the Body by the Urin , and whether it be the water of a Young Man or an Old , of a Man or a Woman , of a Woman with Child , or not with Child . But these things I look upon as trifles , for how can it be resolved from the Urin , whether the Eye akes , or the Noso , or the Ear ? Whence the Head-ach arises ? Whether there lie any obstructions there undiscovered ? whether there be any Distemper in the Arms ; whence its pain comes ? For that all these things are impossible , both Reason and Experience testifie . I confess indeed that something may be conjectured from Urines , but it can be nothing but what is very general . So if Matter be voided together with the Urin , we may conclude that there is some part Ulcerated , but what part that is , who can resolve ? For we see that Matter is voided when the Lungs or Bowels are Ulcerated ; and tho' the Urin passes through these Ultimate Parts ; yet it is a difficult thing to resolve whether it proceeds from the Reins or from the Bladder . This is certainly found by experience , that Physitians are very often deceived in this matter . Our judgment therefore of Diseases , especially of those parts through which the Urin passes not , ought not to rely upon the inspection of the Urin only , but upon the indications that are to be gathered from complaints of the Sick. XVIII . Whence Deliriums arise in Acute Diseases . Acute Diseases are frequently attended with those unsettlements of Mind , with which sick people are mightily subject to be molested , and by which they are hurried into divers hurtful and unquiet thoughts . The occasion of this is , because the Animal Spirits , which by chance , and without any design wander in the Brain , are carried by their own proper motions to open certain pores thereof , in the same manner as they were formerly opened at the presence of some Objects ; whereby it comes to pass , that those Objects are perceived under the same Images , as if they were really present , and so affect the Soul residing in the Brain , as if it were smitten by their Species . So Drunken Men are affected with a kind of Delirium , while the Spirituous Particles of the Wine or Beer boiling by the heat of their Stomach , passes the pores of the Brain , and the Spirits residing therein take away the poise of the common Sensorium , which nevertheless was required , if a right determination of the Animal Spirits had been made by the Soul. But since the Soul is uncapable of governing all these Spirits , hence it comes to pass , that they flutter up and down without any order , and without any determination of Mind , fall sometimes upon these , sometimes upon those pores , which occasions all those antick postures , as Dancings , loud Laughters , idle Songs , &c. which are commonly taken notice of in Drunkards , which actions last so long , till at length , the choicer part of the Spirits being dispersed , the common Sensorium hath its Aequilibrium or Poise restored it , so that the Mind can at pleasure dispose of the Spirits through the whole Body . XIX . How a Fever causes a Delirium in many People . Thus the Blood estuating in Fevers , causes either a simple Phrensie , whether the Blood it self takes fire , or carries along with it into the Brain , certain strange and unruly corpuscles , which enter the passages of the Brain , exagitate the Spirits , and either drive them into confusion , or utterly overwhelm them , as commonly happens in Drunkards . Especially if the Brain be weak and loose , and the bilious Blood be turgid and swell with copious sulphur . Neither are there wanting saline and piercing Particles , which enter the pores of the Brain . XX. How Animals come at length to die . Animals living spontaneously , freely and without any force upon them , are however at length taken away by Death . Because the Fermentation● in them grow daily weaker and weaker ; hence first results a gross Chyle , a viscous and earthy Blood , and consequently less moveable , and which introduces various obstructions in the Capillary Vessels . For as age comes on , the said Fermentations are more and more diminish'd , and almost totally extinguish'd , whence there must needs arise a sort of Blood yet much more Earthy , and scarce moveable out of its place . The Fibres and Pores of the parts are streightned and grow stiff , and still less and less admit of , and take in nourishment . Hereupon follow Universal Obstructions , and by degrees all parts of the Body grow lean and waste away , till at length the very snuff of Old Age brings along with it death , or a total dissolution of the Automatick Conjunction in Brute Animals , but in Mankind a separation of the Soul from the Body : For there is nothing so natural as that every thing should be dissolved in a retrograde order and manner to that wherein it was formed into a composition and subsistence . The Ninth Part OF THE HISTORY OF NATURE . OF MAN. CHAP. I. Of the Sense of Touching , or Feeling . I. The Skin partakes more of the Sense of Touching , than all other parts of the Body . ALTHO' the Sense of Touching is spread all over the Body of Man , yet it is generally allowed that the Skin partakes more of this Sense than all the other parts , and the reason is , because the Nervous Fibres which are spread almost through all parts of the Body , run through the Skin in a particular manner , and in effect , the whole construction thereof is particular : For besides , that it is form'd of Nervous Fibres which are interwoven one with another , there spring from among these Fibres , certain small threds disposed into the form of Pyramids , and are Nervous Eminences , covered with a Cuticle or Upper Skin , under which is discover'd an Oily Humour , which keeps them always very supple . Whence it must needs follow , that the immediate Organ of Touch is no other than the Nervous Fibres extended all over through the Skin . But this Sense of Touching or Feeling is chiefly predominant in the hand , as MALPIGHIUS confirms , who observed by a Microscope , that in the hollow of the hand , and the extremities of the Fingers , there were certain elevated wrinkles spirally drawn , in which were hidden those Nervous Bodies that serve for the act of Touching . II. Of a Woman , who after the cutting off of her Leg , complained of great pains she felt . A Certain Noble Woman in Dauphiny had one of her Legs , newly affected with a Gangreen , cut off , but with such Art and Industry , that she had not the least suspicion thereof , being deceived by a Wooden Leg which the Surgeons brought along with them , wrapt up in a Cloth ; but some considerable time after the amputation , she complained of very sharp prickings and shootings , not only in her Leg , but down to her very Toes ends . Nor did she cease complaining after the matter discovered , but still asserted that she felt pain in her Leg. The cause hereof can be no other than this , namely , that such is the constitution of our Body , that no part thereof can in the least be stirred by any other remote part , but it may also after the same manner be moved by intermediate parts , altho ' the remoter conduce not at all to the motion : For who ever draws the last part of the given Rope ABCD , the first part A , will be moved in the same manner as it might be moved if it were drawn by one of the intermediates B or C , the last part D remaining unmoved ; so when the Noble Woman felt the pain of the Joints of her Leg and Foot , the reason hereof was , because the Nerves which first descended to the Foot from the Brain , and were then terminated in the Thigh near the Knee , were there moved in the same manner as they were to have been moved before in the Foot , upon the sense of this or that Toe aking to be imprest upon the Soul residing in the Brain : Hence an Argument may be brought against the Aristotelians , who will have the Soul to be actually present in each part of the Body ; for were it so , how could the Soul of this Lady judge her pain to be in her Leg , which was cut off , or in her Toes , when it was indeed in her surviving Thigh ? III. How the Sense of Touching may be deceived . Thus it happens in us many times that when we lean longer than ordinary upon our Elbow , we feel a numbness in the Little Finger , so that the Nerve which is deduc'd from the Brain to that Finger being comprest more than it can indure , moves the common Sensorium with the like affection , as if it were prest in the said Finger . IV. Why any one touch'd on a suddain , hath a horror upon him . When any one , on a suddain , and having his Mind intent upon other things , is touch'd by any one , he is seised by a suddain trembling or horror . The cause seems to be , upon an apprehension that by the said suddain stroke some mischief is design'd against him , whereupon he recollects himself , and indeavours to decline it . For then the Animal Spirits are suddainly stirred up , and tend in greater plenty to the Brain than that they can possibly be derived thence in order into the Muscles . For that which comes to the Soul by the Senses , affects it more , than that which is represented to it by reason , tho' for the most part it comes short in truth and reality : Whence in regard by that unexpected contact , there is but a slight impression made in the Body , and he finds the mischief which he apprehended coming upon him , to be nothing but a vain apprehension , he returns immediately to himself , and after a little time lays aside all horror . V. Why they who tickle themselves , are not touch'd with horror . Hence it comes to pass , that when we touch or tickle our selves with our own hand , we are not so shaken or smitten with horror , because therein is no surprise , but we act at pleasure , and consequently following our own way and method , we are not touch'd with that apprehension of evil , which is the principal cause of the said Horror . VI. Why Titillation is chiefly raised in the Soles of the Feet . Titillation is chiefly raised in the Soles of the Feet , which delighting the Patient by a grateful Pruriency or Itching affects him with a sensibility of Pleasure . Titillation is produc'd when the Nerves terminating in the Skin of the whole Body , are agitated more vehemently than ordinary . Yet so as that there follows thence nothing of hurt ; or when the Filaments which are carried from the Brain to the other remoter parts of the Body , are drawn with the like force , so as they be not broken , nor divided from the Members to which they adhere ; which Titillation or Itching is chiefly perceived in the Soles of the Feet , by reason of the tension of the Skin which is impell'd by a light contact , and transmits motion to the Nerves , the Organs of the Senses : Or else , when through the unwontedness of the way of promoting the agitation of the Spirits , new force accrews to them . So a Feather or Bulrush lightly running over the Lips or Cheeks , causes a titillation there , by reason of the thinness of the Skin , and the seldomness of any contact hapning in those parts : Whereas if things harder than those aforesaid are applied , or the parts are more frequently touch'd the Titillation ceases ; nor are those parts affected in any unwonted manner . But the pleasure which proceeds from Titillation hence arises , viz. because the Objects excite a certain motion in the Nerves which might possibly hurt them , unless they had strength enough to resist it ; or unless that Body were well disposed , which causes such an impression in the Brain , which being instituted by Nature , to contest this good disposition and strength , represents it to the Soul , as a Good that belongs to it , so far as it is joined with the Body . VII . How it is that some certain Diseases abolish all Sense of Touch in Man. In persons affected with the Elephantiasis or Leprosie , and in some that are craz'd in their Brain , and are , as they are commonly term'd , besides themselves , the sense of Touching is wholly taken away , tho' the Locomotive Faculty remains entire : For we often see Madmen go barefooted , and lie almost naked on the ground , their Skin being so benumb'd and sensless , that they hardly feel the incisions of a Knife , or the running of Pins or Needles into their Flesh . This Case , tho' it be very difficult to unfold , by reason the Nerves convey both the Instincts of Motions , and the impressions of Sensibles to the Brain ; yet it may be affirmed , that not the same Fibres , which attend upon Motion , are inservient to the Sense . For the Musculous and Tendinous Fibres execute the motive power , but the Membraneous receive the sensible Species , and convey it to the Brain : So that it may possibly be , that the Hurt or haply the Loss of the Sense of Feeling may be caused by reason of some harm inflicted upon the exteriour Members ; as namely , when their Fibres are overlaid by some gross matter , or condens'd by excess of cold . On the contrary in the Palsie , it falls out that the Sense , and not the Motion is hindred , in regard that not the same Fibres that are the Organs of Sense are the Organs of Motion . VIII . How it is that the Skin being pulled off , Objects are felt more acutely . The Skin being pulled off from any part of the Body , Objects are the more acutely felt . This happens , because , tho' the Cuticle or upper Skin be intersperc'd with Filaments , by which the affection is transmitted to the Brain , yet it contains many insensible Fibres , which like Dead Flesh are not affected by any Object . In so much that they may be taken off with a Penknife without any Pain or Sense : Or at least it may be made out that they are harder than to admit of any Impression . For the Interiour Fibres which compose the Flesh , being more tender and nervous , are therefore the more apt to admit even of the least affection , and consequently are the more sharply prick'd with the asperity of a Body . IX . How it is than any part of the Body becomes numb'd , or as they call it , asleep . He who leans or puts a stress long upon any part of the Body , makes it stupid and numb'd , or , according to the vulgar expression , asleep ; as hath been already intimated . The Reason is , because by the said compression the Spirits are stopp'd , and all access to them obstructed ; whence it comes to pass that when that part of the Body is relax'd , there is felt a little pricking , trouble or pain , by reason of the Spirits being at length agitated afresh , and repeating their interrupted motion . X. That Males in Winter , and Females in Summer are m●st desirous of Copulation . It is vulgarly affirmed , that Females in the Summer , and Males in the Winter are most desirous of Copulation . The Reason is , because the Bodies of the Males being more hot and dry , the Summer hath more power by exhalation to dissipate the Animal Spirits ; whereas the Winters Frost condenses more , and preserves them intire : For in cold and moist Bodies , such as are those of Females , the Summers heat cherishes , and calls forth the Spirits , when as Winters cold blunts and repels them . XI . Man excels other Animals in Feeling . Of all Animals whatsoever , Man excels in the faculty of Feeling , and more distinctly perceives the first qualities of things , and other qualities relating to Touch in general , as Humidity , Siccity , Hardness , Gravity , and the like . This Prerogative we commonly attribute to the Spider , who ( as the Boar surpasses in Hearing , the Ape in Tasting , the Vultur in Smelling ) is generally believed to be the more quick and vigorous in the faculty of Feeling ; but this vigorous sense of Touch is upon no other account ascribed to the Spider than upon its quick perception of motion , when sitting in the midst of its Web , it perceives the Fly lighting upon the most remote part thereof , which is not in the least to be wondred at , since all the Lines are equal which are derived from the Center ; so that lying in ambush in the middle , and holding the extremities of the Threds with its Feet , it easily deprehends all things which are transacted about it : But Man surmounts in the Prerogative of Feeling above all Creatures , by reason of the excelleent temperament of his Skin , and the subtile contexture of Fibres in which he excels all other Animals . His most excellent Faculty of Touching , is most chiefly discerned in the hollow of his Hand , and the extremities of his Toes , because that in those parts the Filaments of the Nerves are very slender , and moved with small ado . Whence it happens , that , as it were by instinct of Nature , when we go about to grope out any thing by Feeling , we reach out our Hand , but chiefly make use of the extremities of our Fingers . XII . The Sense of Touch is sometimes augmented by the failure of the Sense of ●ight . The Sense of Touching in some Men is so admirable , that it mightily helps the want of Sight in them , as appears most evidently in that renowned Organist of Falcembourg , who by his Touch alone , not only knew how to play most elegantly , but also could distinguish Coins and Colours of all sorts from each other ; nay , and to very great advantage plaid at Cards with other persons , especially if he dealt the Cards , since he could easily understand by the Pulps of his Fingers what sort of Cards they were which he dealt to his Partners . Of this thing there can be no other cause assigned , than because all persons , like the said Organist , deprived of their Sight , are by consequence no longer distracted by the multiplicity of external Objects , which hinder us from keeping our thoughts fixt upon any particular thing , so that by daily exercise , and a most accurate attention of all circumstances , it must needs of necessity be that Blind Men must in the Sense of Touching , for examples sake , as in the rest of the Senses , of which they are not deprived , excel all other Men. XIII . How it is that in touching , the Object seems to be double . Touching sometimes causes the Object to seem to be felt double , when as indeed it is but single : For the Globe G , being touch'd with the two Fingers laid a cross D and A , feels like two . The Reason is , because while these Fingers keep themselves thus crossed , the Muscles indeavour to deduce A into C , and D into F : Whence it happens that the parts of the Brain , out of which the Nerves , inservient to these Muscles , derive their original , are disposed in such a manner as is requisite for the said Fingers to be , viz. A into B , and D into E , and consequently that the two Globules H and I , must seem to touch each other . For when we lay the Middle Finger A , for example sake , upon the Fore Finger B , then the part of the said Fore Finger B , which being next to the Thumb F , is disposed together with the said Thumb , to lay hold upon any thing , and the part of the Middle Finger A , which joined to the Ring Finger H , is apt , together with the said Ring Finger , to catch hold on any thing , are not very capable , both at the same time , to grasp the said Globe . And the Mind then seated in the Glandule , perceives the Globe , not as single but double , and as it were placed in two places ; and from the different Motion of the Nerves hath an apprehension of two Globes , not one . XIV . How things appear double . By the same Reason , or not much unlike , when we hold up one Eye with our Finger , and behold any thing with dissevered Rays , we cannot but perceive it as double : Forasmuch as the superior Rays of one Eye , are ever wont to act with the superior Rays of the other ; as likewise the Middle with the Middle , the Inferior with the Inferior , and to conspire together to the percept●on of one and the same thing , as it were to make a report that it is indeed but one and the same . But if the Eyes chance by any means whatsoever , to be so distorted , that the Right Rays of one Eye agree not with the Left Rays of the other ; or the Superior Rays of one with the Inferior of the other , all single Objects whatsoever are look'd upon as divers . As in a Concave Glass , the Flame of a Candle appears double , by reason that from the Left Side of the said Glass , the Rays are reflected into the Right Eye , and from the Right Side into the Left Eye . CHAP. II. Of Taste . I. Why the same sort of Meat is not always alike grateful to us . THE same sort of Meat doth not always please . For that which is gratefully receiv'd by the Hungry Stomach , becomes unpleasant and unsavoury to the same Stomach well satisfied ; and the same Drink which delights the Thirsty , becomes loathsom to those that are fill'd with Drink . The Reason is , because all Savoury Things impress an affection in the Organ of Taste , according to the Contexture and disposition wherewith it is imbued : So the Tongue over-dry , or void of Moisture , perceives little or no taste in any thing ; and so on the contrary , a Tongue which is turgid or swelling with too much Moisture , and hath its pores stopt up with liquid Bodies , cannot be affected with any Savour . Since therefore the disposition of the Tongue , in a person fasting , and in a Person full , is quite different ; hence it comes to pass , that the same sort of Meat or Drink is not always in the same manner received in its little chinks and small pores , and consequently induces a different affection therein . This may possibly arise from a Mutation of Temperament , whilst the Spittle , proceeding from the Stomach , according to the qualities of the Humour wherewith the Stomach is repleated , mingles it self with the particles of the Meat in the Mouth , and promotes their acting . II. The Gross Error of the Peripateticks about Savors . This very Experiment alone is sufficient plainly to discover how grosly the Peripateticks are deceived when they affirm , that the savor in savory Bodies does every way agree with the sentiment we have thereof . Since were it according to their opinion , it would follow , that the same Man could not at several times have a different taste of the same sort of Meat , which is contrary to experience . It may also happen , that from the various situation of the Nerves conducing to Taste , all sense of Taste may be taken away , according to the mention made by REALDUS COLUMBUS , of one Lazarus , vulgarly Sirnamed the Glass-devourer , who not distinguishing in any thing bitter from sweet , fresh from salt , used to devour Stones , Glass , Charcoals , Fish drawn alive out of a Fish-pond . Of which Monster of Nature , when after his death , a Dissection was appointed by a Person of Curiosity inquisitive into the Cause of so uncouth a thing : It was found that the sixth Conjugation of the Nerves , which was ordained by Nature , for Tastes sake in other Men , in this Glass-devourer reached neither to the Palate , nor to the Tongue , but turned back to the hinder part of the Head. IV. They that are troubl'd with the Jaundise , think all things they taste to be bitter . They that are troubled with the Jaundise , think all sorts of Meat they taste to be bitter , and imbued with a quality noxious to them . This mistake proceeds from the Choler which is diffused through the Tongue , for such a sort of humour , mingled with the Spittle , infects the Meats , and imbues and depraves the Organ of Taste with its bitterness : So that these l●terick Persons are not so much deceived about the Affection imprest ( for they do really taste that which is bitter , and the Organ is certainly ill affected ) as about its Cause , since they look upon the said Savor as received from the Meat , when as indeed it is to be imputed to the humour only . For some without any Meat , seem to themselves to taste a certain Savor , in regard this humour sliding into the Tongue or Jaws , vitiates and corrupts their Temperament . The same thing happens in the Touch , as when any one fancies he feels the force of heat , and thinks Fire to be applied to his Body , when indeed Fire is far enough off from it , and only a defluent humour , either a tension of parts alone , or a tumor with it impresses such an affection , as Flame the Instrument of Pain , were it present , would impress . V. How it is that the Tongue discovers any disease . The Tongue is the chief Indicator of any Disease , and by whatsoever Infirmity we are opprest , 't is thither we have recourse for all the Signs and Discoveries thereof . In so much , that it hath been always the custom of all Physitians , the first thing they do , to bid the Patient hold out his Tongue . The Reason is , because the Tongue being the tenderest of all parts of the Body , is most easily wrought upon ; for since it is of a Spongeous Nature , and abounding with Blood , it is soon seiz'd with the force of a Disease , or infected by vitiated Blood , by both which being ill-affected , no wonder if it soon discover the alterations of the Body , and reveal with what infirmities it is assaulted ; sometimes it looks Red , sometimes Yellow ; and when its plexure is singular , it is subject only to a singular affection . VI. They that eat Bread in a Morning , have a vellication at the root of the Tongue . They that take a Crust of Bread with a draught of Wine , for Breakfast , seem in a manner to feel certain prickles in the innermost recess of the Tongue . Because the Meal of which the Bread is made , is for the most part kneaded with Ferment and Salt , the latter whereof still imparts something of Acrimony : For the parts immingled are rendred more sharp , than those that are more solute and loose , and adhere to it with a lesser tie . Whence New Bread pleases more , and is more grateful to the Organ of Taste , in regard the particles thereof being less interwoven , are better chewed by the Spittle , and more gently move and affect the innermost tract of the Palate . VII . Why it is that those who have no savor of Meats , seem also not to have any smell . They that have not the faculty of perceiving Savors , must in all likelihood be deprived also of the sense of Smelling , as is many times observed in a Distemper called the Pose , where the sense of Smelling being taken away , that of Taste also fails . The Cause of this Consequence depends upon the Corpuscles which are inservient to both Senses ; forasmuch as they are the same , and differ in nothing but their various Expansion . For the sense of Smelling proceeds from particles of Emanations flying in the Air , which being mixt with the Air we breathe , are conveyed to the Nose . But the particles which conduce to Taste are indeed less subtile , and are to be imbibed by some humour , that they may smite the Organ of the Tongue ; yet they are really the same , and are only distinguish'd in this , viz. that being diluted with humour , they cause Savor , and being exhaled and transmitted through the Air , they cause Odour . VIII . When Nauseation comes , or a vomiting up of certain Meats . Many who have an aversion to certain sorts of Meats ; for example , to Old Cheese , or the like , when they happen to taste of the same unawares , certainly contract a great loathing , and immediately , if possibly , vomit it up ; but if they cannot , presently fall sick , or find themselves very much indisposed . The Reason is no other than that the said Meats , either by their Odor or Vapor inflict damage upon those Fibrels or pores of the Nerves : For while they ill affect the Nerves inserted into the Ventricle , they first cause a tremour of the Lips or Nauseation ; and if the said Vellication of the Nerves continue , there will at length follow a Vomiting , which Nauseation ever precedes ; nor is the said Nausea any thing else than the tremulous Motion of the innermost Membran investing the Mouth , which proceeds even from the vellication of the Ventricle , as to which Tunicles , that of the Mouth is continuous . IX . Why upon defect of Taste , defect of Smell should follow . It may also be otherwise said , that the privation of Taste induces the failure of another Sense , viz. Smell ; by reason that both Sensories being planted near each other , are apt to be both together overwhelmed and glutted by the same serous matter squeesed out of the Blood : In as much as the tubulated Membrans of the Nostrils , and the structure of the Tongue it self consist of a very rare , and as it were spongious composure : Wherefore the pores of either Organ , and the passages from the Serous floating matter are apt to be overflowed , and the sensile Fibres in both at the same time to be obstructed ; to which may be added , that whereas the Nostrils and Tongue ought to b● supplied with a continual moisture ; both of them as they most grievously , and more than other parts , undergo a deflux of superabundant Serum , so both are equally obnoxious to the same mischief upon any slight cause . X. Why sick Persons have an aversion to Meats that are sweet . Sick Persons , and those that are of a Crasie Body , reject all sweet things , and are only delighted with what is acid and sharp . The Reason why these sickly people have such an aversion to all Meats that are sweet , is because of the vitiated Blood , and the malignant quality of the Morbifick Humour , which being for the most part Choler , breaks into the Tongue , as being a very tender place , and causes innumerable obstructions , hindring a just perception of the Meats that are presented . Hence it is that sharp Meats please the Sick , in regard the Tongue is covered with a certain Uliginous tegument , so that sweet things cannot enter and pass through it ; whereas Acids affect in another manner , as consisting of long and inflexible parts . Nor is it for any other cause that Beasts covet Salt , and are very much taken with the eating thereof , because their Tongue is scabrous and rough , and overlaid with a certain Crust . XI . Sweet Meats hinder others from being relish'd . Who ever hath a relish of sweet things , hath not a right relish of other Meats of a more accurate taste . Because all Esculent or Eatable Things are no otherwise tasted , but so far as the Tongue induces and insinuates within the pores certain Savoury Corpuscles reduced and made small by manducation or Chewing . But whereas sweet things are viscous or clammy , and for the most part obstruct the passages of the Tongue , they hinder the supervenient savoury particles from being carried into , and affecting the Sensorium . Wherefore the better to restore again the faculty of Tasting , we use to feed upon sharp or salt things , to the end that they may loosen the passages of the Tongue , and wear away , and take off the inherent Viscosities . XII . How it is ●hat Spittle is excited at the sight of things grateful to the Pa●a e. Spittle at the sight of things grateful , and with which we are chiefly delighted , increases and fills the Mouth . This happens by reason those sorts of Meat , which before are apprehended to be grateful to us , now again excite an Appetite in the Soul to receive them : Whence it comes to pass , that the Soul being intent upon this alone , sends more copious Spirits into the Glandules of the Mouth , so that they being so much the more compressed , the Spittle at the sight of those grateful appearances is squeesed out in greater abundance . CHAP. III. Of the Sense of Smelling . I. Man is the dullest of all Animals in the sense of Smelling . OF all Animals , Man is thought to be that of the grossest Smell , and who the most slowly takes in the Emanations flowing from Bodies . The Reason is fetch'd from the Constitution of the Brain it self , which being spongy , and abounding with much moisture , blunts the edge of smell , and is the less affected by the said Emanations . Hence those that are troubled with a Catarrh or excessive deflux of Humour , many times have no smell , in regard the pituitous Humour blocks up the Nostrils and the Cribriformous or Siveformed Bone , to which the Emanations flowing , clot together , and are in a manner choak'd up : So likewise little or no smell is perceived under water , in regard the moisture takes in the exhaled Corpuscles , and obstructs their diffusion . II. They who have large Nostrils smell best . They who have broad and open Nostrils , and in whom the spongy passages of the said Bone are from their Birth dilated , admit more easily and strongly all Odours or Smells . The Reason is , because a greater abundance of Emanations is conveyed through those Cavities to the Brain , which being gathered therein , and with mutual application aiming at the Nerves of the Brain , impress the greater affection . In a manner not much different from that whereby the Air inspired through a broad and well purged Ear , enters more copiously the Auditory Passage , or whereby the smoak ascends more easily through a wide Chimney than through a narrower . III. The Ox , Goat , and the like , excel other Creatures in smell . Hence in dissections , we see in a Goat , Ox , Sheep , and other such like Animals , that feed upon Grass and Herbs , that the Mammillary Processes are larger than in Carnivorous or Flesh-eating Animals , because they have more need of an exquisite Organ of Smell to distinguish divers sorts of Herbs , and to select the more agreeable from the more noxious . For the same reason Brute Animals are indued with far larger Olfactory Nerves than Man , by reason that they discern their food by no other guide than smell alone ; whereas Man , as one indued with Reason , knows many things by Reason and discourse , and is led not so much by smell as by seeing and tasting , to the choice of his Diet. IV. Those things which are grateful in smell to one , are very ungrateful to another . Those things which are grateful in smell to some , are to others ungrateful . The Reason lies in the diversity of the pores in the Olfactory Nerves of this or that Person ; so some are highly delighted with the smell of Roses , while others reject them , in regard the Volatile Particles exhaling from Roses , have such a Figure that they can easily , and without any trouble pass through the pores of some , but not without great difficulty and violence the pores of others ; whence in these there arises a notable aversion of the rosie smell , in the others a wonderful delight therein . So Men without any disgust or trouble accept the smell of Musk or Civet , which at the same time to Women generally is odious and pernicious . Nay it causes in them Hysterick Passions , whereof there can be no other reason but this , viz. that the Volatile Particles of the Civet or Musk cannot so easily and freely pass the pores of a Womans Body as of a Mans , whence Women are most refresh'd by the odour of the most ill-scented things , as Assa-faetida , and such like smells , which Men can hardly indure . V. A Man that stinks is not sensible of his own stink . A Man that stinks , as they say , above ground , is not sensible of the ill-scented Vapour proceeding from him . The Reason is , because the Organ of smelling is so disposed , that the inbreathed smell cannot be perceived but according as it falls upon adverse Fibres ; for there are in the Nostrils certain Valvules , or little Caverns , whose Mouth towards the extremity of the Nose is most open , and consequently the sense of smelling is only effected , when the Breath emitted from without arrives at the Nostrils , and falls upon the adverse Fibres : But when the foresaid Vavules lie not open to the exspirated Breath ( that is to say , because it falls not upon the adverse Fibres ) it comes to pass that the Organ of smell is not touch'd , and consequently no affection follows . VI. Continual Odour or Perfume ceaseth to be smelt . Those that long hold any perfumed thing to the Nose , or live for any considerable time in a place full of perfumes , are at last sensible of no Odour at all . This happens because the Emanations or Breathings from Bodies perpetually , exhale forth , and are successively conveyed through the Air to the Nostrils , which when they arrive to , they do not immediately return back , but stick there some time , and so fill the Appendices or Suburbs , if I may so call them , of the Brain , that those which follow after cannot penetrate them and make a fresh assault upon the Sensorium . This appears plain by those that lay among their Cloaths Civet or Musk Bags , or powder their Hair with Jessamin or other sweet Powders . Forasmuch as after some time , they cease to have any Odour of them , and as if they were no longer respiring , are not in the least affected with any Scent of these expirations : So that those who love to smell to Flowers , or to enjoy the Flagrancy of any place , hold them by turns to their Nose , and go and come several times to the place , to the end that the particles of Flowers or Spices may have time allowed them to depart from the Organ of smelling , and way be made for those that come after . VII . How it comes to pass that a Woman with Child miscarries upon an ill scent . Sometimes it happens that a Woman with Child miscarries upon an ill smell . I knew one who smelling the Snuff of a Candle blown out , fell thereupon in Labour , and brought forth an abortive Child , when near her time , and that not without great danger of her Life . The Reason is , because ill Odours grate and perplex as they pass by , and so compress the Organ of smelling , that such a sort of motion being transmitted to the Brain , affects also the Fibres of the Womb which are connected with the Fibres of the Birth , and induces such a disposition , that the Birth forcing the Umbilicar Vessels , breaks forth , and makes its passage out . On the contrary a grateful Odour refreshes and comforts the Gravid Person , and renews her strength , which suffers from the grievous and faetid Vapours wherewith she is chiefly at that time infected , and therefore must needs be relieved by a sweet Odour , as it were by a tenifying or emulgent draught , unless by chance the Womb labours with an overcorrupt Humour , and swells with Crudities . VIII . Smells are better perceived in Summer than in Winter . Smells are less scented in Winter than in Summer , and hence it is that Hounds follow the Game better in Summer than in the Winter . Of this there can be no other reason than that the Heat which prevails in Summer dilates or widens the pores of all Bodies , which causes the Vapours the more easily to be diffused and spread through the ambient Air ; whereas the cold by condensation compresses the pores and hinders the particles of Bodies from being resolv'd , and turn'd into Vapour ; almost in the same manner as Smoak , which being excited by the heat of the Fire , is extended ; but being invironed by Frost , is contracted , and ascends in slender Columns through the Frigid Air. Altho' it may also be said that Summer is more apt and disposed for the receiving of Odours than Winter , because in Winter the pores of the Body are contracted , and less of Vapour is educed out of them ; whereas in Summer all Odours are too much dissipated by reason of the heat of the Air , and by the over-abundance of them , the Organ of smelling is disturbed and disordered . IX . Why Flat-Nos'd People for the most part send forth a stinking Breath . Those who have flat Noses send forth for the most part a very unsavoury Breath , whence proceed the many scoffs of Poets upon Flat-Nosed People , in which their stinking Breath is brought upon the Stage . The Reason is , because the pores through which the Humour flowing from the Brain to the Nostrils passes , are obstructed , or at least are too narrow for it to run freely through them , so that by gathering and clodding there , it corrupts and putrifies . To which also may be added , that Flat-Nosed Persons have for the most part vitiated Lungs , in regard that since the Air cannot pass through so short a passage or winding of the Nostrils , so as to be well purged , the Brain and Lungs must needs be infected , and thereby cause a stinking Breath . X. The most ingenious Persons are the most dull of smell . Those who excel in Wit , are dull of smell , and sometimes totally lose that faculty . The Reason is , because those are most Ingenious , whose Brains are best purged , that is , exonerated of all their superfluous and excrementitious pituitous humour , from which the Brain being freed , is rendred the more prompt to execute those works which depend upon the faculty of Wit. But they who have a deflux of Flegm or Spittle distilling down to the Nostrils , must certainly of necessity become yet more dull of scent , in regard the Flegm obstructs the Nostrils , drives away the supervening Odours , and blunts their Edge . CHAP. IV. Of Hearing . I. We hear better by Night than by Day . WE are quicker of Hearing by Night than by Day . The Reason is , because in the Night the Air is still and quiet , and not troubled with any loud noises or sounds , which in the Day hinder us from hearing anothers Voice at any distance , in regard it presently meets with various undulations of Air raised from external sounds , into which immediately it transfers its motion , so that the Voice becomes as it were stifled in the Air. II. How Human Speech comes to be so various . Speech among Men is various , by reason that some Men in speaking utter a great and manly sound , others an indifferent , and others a shrill and effeminate voice . The Reason is , because in some the Aspera Arteria is more ample or large , and so puts forth a grave or big sound ; but they whose Aspera Arteria is of a mean or middle size , send out a Voice or Tone somewhat sweeter , and as it were ▪ mixt of a grave and shrill Tone together : Lastly , they who have it narrow and streight , utter a Tone yet more shrill and also soft , such as is for the most part that of Women . III. How it is that upon the Mutilation of the Ears they receive Sounds confusedly . Those that have their Ears cut off , relate that they confusedly take in all sounds ; so they seem to hear upon all occasions some inarticulate sound or other , as the chirping of a Grashopper , the murmer of a flowing Stream , or the like . The Reason is , because the exteriour Ears are hollowed and inlarged , so that the moved Air by passing through the turnings and windings , is gathered and made intense . For the Air enters so much the more copiously into the Auditory Passage , as coming from an ampler space , it falls into the streights . So that Deaf People oft-times supply the defect of that Sense by holding their Hand hollowed , or a Horn to their Ear ; for as the sound is inlarged in winding Cavities , and enters the Ears with the greater force ; so Animals that have moveable Ears , at the hearing of any noise , prick them up that the sound may enter in more copious and direct : Therefore the Ears being cut off , the sound falls directly into the Auditory Passage , which causes the failure of that determination which ought to be , and which happens but at the instant of the said Illapse . And thereupon the sound comes to them no other way , than if it proceeded from various parts , as it happens in the instances before-mentioned . IV. A Tune plaid on a Pipe is more charming than that plaid on a Harp. A Tune plaid on the Pipe is more sweet and charms the Organ of the Ear , more than if plaid on a Harp. The Reason is , because the sound of a Pipe is more continuous and less disjointed , than that of a Harp. For in regard we are delighted with modulation , and take greater pleasure to hear proportionate Movements , we are most taken with those which keep a certain Tenour , and smite the Soul with repeated strokes . To this may be added , that the sound of a Pipe is as the Voice performed with respiration , and consequently the Notes are the more easily mixt one with another . For the Harp produces a certain asperity , and howsoever struck creates harshness to the Ear. V. Persons smitten by a Tarantula , are cured by Musick . Those that are smitten with the sting of a Tarantula , are said to be cured by Musick ; in so much that let a Musitian be brought to the Person so smitten , and let him sing by him to his Lute or Harp , and the Patient shall rise from his Couch as he were wakened out of his sleep , and shall so exercise his Feet for some hours by his strenuous Dancing , that all the poison shall effectually evaporate by sweat out of his Body . The Reason of this so wonderful effect , is to be attributed to the motion caused by the Musical Instrument , by which the Drum of the Ear , and afterwards the Brain being smitten , by their help , also the Arteries , Nerves and Muscles are excited ; so that upon the excellent and well-followed performance on the Harp , the Patient to free himself from the Tarantula's poisonous stroke , falls a dancing with all his might ; and by this means not only hinders the force of the Venom from spreading farther , but also by the continual agitation of his Body expels and breaths it out by sweat , in regard the playing on the Harp so far stirs up a motion in the Nerves , as to dissipate the force of the Venom which possesses the Arteries . VI. Why some so stang are not cured by Dancing . But if it happens at any time that some are not cured by dancing , ( for it hath been found by experience , that persons stung by the Tarantula have danc'd thirty or forty years without cure . ) It is because the Sting possessing the Arteries , Nerves and the Spirits , contained in them , hath been more tenacious and viscous , than to be capable of exhaling and being rarefied . VII . Deaf Persons have been brought to hear better by a great Noise made about them . It hath been known that persons of vitiated Ears , and almost deprived of the sense of Hearing , have by a very loud sound ( for example of Drums and Trumpets ) been brought to that pass as to receive the words of people speaking to them , and to give answers to their Interrogations . This happens from the Drum plac'd in the recess of the Ear , which being loosened , admits of no affection from the soft impulse of sound , but upon the din of a very great noise , acquires its due tension ; so as commodiously enough to perform its office ; and thus the Cause is made plain why a certain Deaf Man of Orleance living near a great Steeple of Bells could easily hear the words of those that stood talking with him , so long as the several Bells were ringing ; but upon the ceasing of that noise , he fell back to his wonted deafness , and could no longer hold discourse with those about him . So ● certain young Nobleman born near Oxford , plainly heard the words of those that were near him while he passed through London-streets in a Chair , or any loud Noise was made about him , by reason that upon a notable concussion of the Air , the tympanum was reduc'd to its due tension , and acquir'd its turgescence . VIII . How it comes to pass that by keeping in the Breath , we hear the more plainly . When the Breath is kept in , we receive so much the more easily and plainly the approaching sound ; whence in hearkning earnestly to any sounds which come from afar off , we commonly keep our Breath . The Reason is , because all expiration is a motion ad extra , as my Lord Verulam calls it , rather repelling than attracting the sound ; so upon whatsoever thing we are most industriously bent , and labour with most vehement intension , we stop and keep in our Breath ; for a catching with a difficulty at any flying sound is but a certain sort of laborious work . IX . We hear not all Sounds with like suddenness . It happens frequently , especially in a confused multitude of sounds and words , that we presently hear the speeches of some certain Person ; but those of another Man , tho' speaking at the same time , we are not sensible of , till some time after . The Reason is , because the sound or voice of one Man taken in with that of another , is not altogether at the same moment of time , conveyed to the common sensorium , but one after another enters the Ear. Whence it is probable in such a case , that the first sound , one winding of the Ear alone being gained , is thereupon sooner transmitted from the first Branch of the Auditory Nerve to the common Organ ; but the later as it were sensible , because it cannot be transferred together at the same time in the same Nerve , making therefore another circuit through the second winding , it is at length removed from the second Branch of the Auditory Nerve , and consequently succeeding the former , is later taken in . X. Words pronounced without , are better heard from within a Chamber , than on the contrary . Let any one be plac'd in a Chamber , and he shall more clearly and distinctly hear the words which are delivered from without , than were he plac'd without , he could hear them , being utter'd in the Chamber . This comes to pass , because the sound diffus'd through the Air , is reflected by interposed Bodies , as sufficiently appears from an Eccho ; for in regard there are many solid Bodies within the Chamber , as Walls , Planks , Tables , &c. which drive back the emitted words , it happens that the sound becomes the stronger , and more forcibly smites the Ear , than in the free Air , where those obstacles are not to be met with , from whence sounds result . Hence it is that he who speaks from any high place is better heard by him who is beneath , than on the contrary he that speaks from a low place is heard by one above ; because more Bodies occur from which the voice may be reflected , whilst it tends downwards , than whilst it flies up , and wanders through the Air. XI . Why the sound of a Bell is not always heard from the place where it is . The sound of a Bell happens sometimes to be heard in such a manner , that it seems to proceed not from the place where it is , or whence it really proceeded , but from the opposite part . This fallacy proceeds from the reverberation of sound , which coming last to the Ear , seems therefore to proceed from that place from whence it was reflected : For as by the reflection of Rays , a thing appear● not where it is , but in that place whence the Rays are last derived : So a Bell or any other sonorous Body is judged to be in that place where the sound came last to the Ears : For a sound reflected by an oblique Line , arrives at the opposite part . In like manner a Bell being rung from the Northward , if the Chamber Window where we are , open to the South , we seem to hear the sound from the Southward : So if a Beggar , as we are sitting in a Chair or Sedan , make his Speech on that side the Chair where the Glass Window is up , he will seem to be on the other side where the Window is open or let down . XII . Whence it is that a kind of murmuring sound is heard upon stopping the Ears . If any one stop both Ears , or either of them very well , he will nevertheless hear a certain tremulous and murmuring sound . The Reason is , because of the agitation of the Air included in the Ears : For in regard there is a continual efflux of very much Breath from the Ears , if upon a stoppage applied , the said efflux be barricadoed or shut up , the Air pent in within the Cavities of the Ears , and impatient of its narrow confinement , drives and forces into the tympanum , from which vehemence of agitation a certain murmuring noise must needs arise , and affect the Ears in such sort , as if it proceeded from some sonorous object . Which that it is so , is from hence sufficiently evident , namely that a vehement external noise being raised , that internal humming sound is suppressed , and that indeed for no other reason but because a new agitation inwardly induc'd , directs the tumultuating Air , and forms it into Rays . XIII . How it is that two unequal sounds are equally quick . We oftentimes equally soon , at one and the same distance hear two unequal sounds . This so happens , for that the agitation of the Air which makes the noise , hath always an equal swiftness at the same distance , tho' it is made with a greater or lesser effort , so that the noise of a sonorous Body extends it self with the same swiftness at one and the same distance , altho' the Body be smitten with an unequal force : For a greater force may indeed contribute to the making of a greater sound , but not in the least to the making it to be of a farther extent . XIV . Why sound cannot be heard under water . That famous Diver in France , wrapt up in his own Machine , which takes not away Hearing from any one so long as he continues above water , affirms that when he was about ten fathom under water in the Occan , not far from Diep , he heard not the least report of those Guns which the Ship was obliged to discharge as it sailed out of the Port. The Reason is , because sound cannot be procreated , except in a moveable Object ; so that if that Medium through which it is to be transmitted , cannot conceive any tremour , or resist the tremour of other Bodies , it can produce no sound . Wherefore since the bulk of the Water is so great that it cannot be agitated by the moved Air , and resists its tremours : No wonder if the noise produced above the waters reach not so far as the bottom ; for as we find by experience , that a Ssone falling into a River from a high place , makes no noise when it come to the bottom , tho' it hit against other stones : So an exterior sound cannot so penetrate the extraordinary heighth of the Waters as to be received by it ; and so they who swim upon their Backs , scarce hear any thing so long as they have their Ears immerst , and lie beneath the surface of the Water . XV. F shes in the water hear not . Whence it is evidently made out , that all Fishes are deaf , or void of hearing , except those of grand bulk , as the Whale , Dolphin , the Phocas or Sea-Calf , which raising their Heads above Water both take in sounds , and utter a voice from their Mouth . The Reason why other Fishes seem to be deaf , or void of hearing , is because they are wholly mute ; for there seems to be that correspondence between the Voice and the Ear , that those very Animals which want Voice , the same also are destitute of Hearing , by which at the same time the word and the thing signified thereby are apprehended . Now if it be objected that Fishes decline the noise of the Oars , and that the Fishermen commonly beware of the tottering of their Boat , or of making a noise with their Nets , when they beset the Shoal : I answer , that all this is , lest upon the motion of the Water stirred up by the force of the Oar , or the overmuch tottering of the Vessel , the Fish should apprehend the said motion , either by touch or sight . For we may observe in a Fish-pond , that the Pikes and other sorts of Fish swimming therein , are terrified by no sort of noise , murmur or sound , but upon the least unusual agitation or motion made in the Water , they immediately fly and shift their places , and if being called to Meat they sometimes come ; this comes to pass , either because they are mov'd at the sight of the Person calling , or because the Water is moved by the lowdness of the Voice . CHAP. V. Of Sight . I. Why the Eyes move both together . AS we go about to look upon any thing , both Eyes tend to the beholding of the said Object with one and the same motion , while in the mean time each of them hath its Muscles distinct , and proper to its self . The Reason hereof proceeds from the Mind , which when it sets its self intently to behold any thing , it is not to be imagined that one Eye is bent upon the beholding of that thing , and that the other is imployed upon another Object ; for by that means there would be a confusion of the Rays , and of the perception in the common sensorium . But both Eyes must necessarily be directed at the same time , to the same Object . And to this end the Spirits are always disposed to the service of those Muscles which are capable of converting both Eyes to this one place , and not to those which serve to draw either Eye one way , and another another ; for the Mind is always bent upon seeing one thing ; and tho' it often designs to have the sight of many things , yet to take the better view of each , it takes it in a certain order , and views them one after another ; which may quickly be done , if the things to be seen are near enough and big enough to be easily and soon beheld . II. How a Flea and a Horse may both seem to be of the same magnitude . Who ever looks upon a Flea near at hand , and extends his sight to a Horse or other Animal of like magnitude at a very great distance , they will appear equal , and offer themselves to view under the same magnitude . This is evident from Opticks , by which it is thus made out , namely that the faculty of seeing , or rather the Soul residing in the Brain , apprehends Objects to be greater or lesser , according as they were represented to the sight under a greater or lesser angle . So that when as a Flea being seen very near at hand , and a Horse at a remote distance , seem both under the same angle , they are look'd upon by the Soul as equal : For it is evident that an Object is therefore apprehended greater , because it impresses a greater affection upon the Retin Tunicle or Optick Nerve , and lesser so far as the lesser proportion of the Organ is affected . Hence it is that the farther a thing recedes from us , so much the lesser it appears ; and by how much the nearer it approaches us , so much the bigger it shews , in regard the Object , by how much the farther it is removed from us , appears with so much the acuter and smaller angle , and impresses the lesser affection . The Reason of all this is , because while the Object recedes and withdraws it self by little and little from the Eyes , it is not only diminished as to its circumference , but as to all the parts which are turned towards the Eye , because tho' it always remits its Rays in like manner from each point , yet most of them according to the rate of their recess and elongation , slip beside the Eye , and are elsewhere disposed . III. Convex things appear afar off as if thy were plain . In like manner those things which are seen afar off , tho' they are square and angular , yet they seem round in regard the distance of the angles cuts off the excursions and asperities ; so we receive Convexes as they were plain , because all inequality of parts , by reason of so great an interval totally disappears . Hence the Sun and all the Stars appear to our sight not convex but plain ; for tho' their middle parts are nearer to our Eyes than the extreme , yet that difference is but very small , if compared with so great a distance . IV. Why an appearance in a Looking Glass seems to be beyond the Person looking . An Image of any one beheld in a Looking Glass , appears as much beyond it , as the Spectator Stands on this side it . The Reason is , because the Spectator beholds his Face in the Glass , not as fix'd therein , but as sliding from him ; and consequently the matter is to be considered , as if the Spectator were from the Looking Glass behind himself ; whence it comes to pass , that the same distance is repeatedly apprehended by a reciprocal comparison : And because this reflexion causeth no necessity of the Spectators being transferred into the place of the Looking Glass , or altering his situation to be converted again into himself , it comes to pass , that after the Axis which is directed from the Spectator to the Glass , he immediately receives an Axis which tends from the Glass to the Spectator ; and because of the unalterableness of the situation , hath both for the same continued Right Line , whose middle is from the Spectator to the Glass , the other half from the Glass to the Image beyond the Glass , where the Spectator represents from whence he comes . V. How it is that an Object may distinctly be discerned through a small hole . An Object which appears too confused , as being too near the sight , may distinctly enough be seen , if any one behold it through a little hole made with a Pin or Needle in a Card or piece of Writing Paper . The Reason is , because the Eye then receiving a lesser quantity of Rays from every point of the Object , every one of them describes its Image alone in a very narrow space ; and so they which proceed from the two Neighbouring Points , scarce make any confusion in their Actings . VI. Those that dive into the water , see Objects only confusedly . Urinators or Divers see Objects confusedly in the bottom of the Waters , except they make use of very Convex Glasses . The Reason is , because the Rays of Light are not sensibly broken when they pass from the water into the aqueous or watry humour of the Eye ; and so those that proceed from the same point are not again compelled by falling into the Retin Tunicle , which may be gained by the use of very Convex Glasses . VII . How low Objects come to seem high , and high , low . Things presented to the sight , by how much the farther they are distant , so much the higher they appear , and on the contrary high things so much the lower . The Reason is , because things near at hand emit those Rays which smite the superiour parts of the Eye , or Retin Tunicle ; whereas things remote send forth those Rays which arrive at the inferiour region of the Eye ; and when the Objects in the Retin Tunicle are form'd with an inverted situation , those must needs seem more deprest and low , these more sublime . On the contrary it happens , when we convert the sight of the Eye to things plac'd on high ; for then those things which are at a greater distance seem lower , in so much that the utmost bound of Heaven appears as it were conterminous to the Horizon : Forasmuch as that part of the Heaven which is our Vertical point , affects the lowest part of the Eye , and the other parts emit Rays , so much the more sublime by how much the more remote they are ; hence that appears the supream of all , and the rest are so much the more sublime , by how much the nearer they approach to the Vertex ; and so much the more deprest and low , by how much the farther they receed from it . VIII . Objects ceasing to be seen when the Pupil is contracted . Objects sometimes by the contraction of the Pupil or Apple of the Eye are hidden to the sight , as if any one should direct his sight to some remarkable Star , for example , Venus or Jove , and by some Art should contract the Pupil of the Eye , the Star at first seen will by degrees disappear , and at length totally fly the sight . The Reason of this is drawn from part of the said Pupil , which according to the rate of the said coarctation or dilatation , causes the Object to be seen , or to fly the sight : For since upon the contraction of the Pupil it receives fewer Rays under a smaller angle , it causes the Object to appear less , and consequently if they are so few as to be comprehended in an insensible angle , they will no way affect the Retin Tunicle , so far as is required to Vision ; and as that affection is not perceived , so neither will the Object which ought to be perceived by the mediation thereof , be any farther deprehended . For it conduces to the rendring of that affection insensible , that in the contraction of the Pupil , the Chrystallin Humour be somewhat relaxt ; whence it comes to pass , that the bottom of the Retin Tunicle goes back so little , and becomes more weak by the incidence of the Elapsed Rays ; which two things are sufficient to make the Object , at the contraction of the Pupil , to disappear , and what was seen before , to become afterwards invisible . IX . How the Stars come to appear bigger by Night , and lesser by Day . Hence it is that the Stars appear lesser by Day than by Night , when our Hemisphere is overlaid with darkness , namely by reason of the Pupil in the light , and the expansion of it when it is dark . For it is certain , that the Pupil , when ever light takes place , is rendred more narrow , and consequently that fewer Rays from a flame of Fire enter the Eyes , and that a lesser portion of the Retin Tunicle is affected ; but the Air being overspread with darkness , it plainly appears that the Pupil is dilated , and consequently that many more Rays arrive at the Eye , and that a greater portion of the Retin Tunicle being affected , a greater species also of the Object is produc'd therein . Hence also it comes to pass , that the magnitude of the Stars seems in the Evening to increase , and so in the Morning to decrease ; by reason that the Pupil in the Evening Season is by little and little dilated , and in the Morning by little and little contracted , and by this means the Retin Tunicle is ever less and less affected . So the flame of a Candle , if by Day it be beheld a hundred paces off , it appears very small , but upon the coming on of the Evening , it began to grow bigger , till Night at length increased it to the appearance of a considerable Torch . X. How some Men discern Objects at a very great didistance . It is reported of STRABO , that he was of so sharp and quick an Eyesight , that he could discern Fleets setting Sail from out of Lilybaeum , a Port of the Carthaginians , at the distance of above a hundred miles : Moreover , LOPEZ , a Spaniard at Gades , is related to have been able to discern from the top of the Mountain Calpe on the Europaean side , to the opposite Shore of Africa , over the whole Bay between , which by the Testimony of Cleonardus in his Epistle to Jacob Laboc , is in a Calm Sea no less than three or four hours sail , and that so distinctly , that he could relate many things he saw there done . This so wonderful a sharpness of sight depends mainly upon a double disposition of the Persons so indued , first from the docility of the Chrystallin Humour , and the easie use of the Ciliary Processes ; namely , whilst according to the different incidence of Rays reflected from the Objects , the Chrystallin Humour is in such a manner adapted and disposed as an exact projection requires . 2 dly , It is necessary that the Capillaments of the Retin Tunicle be so exquisitly disposed , as to receive the least affection . Because altho' those things which we behold with our Eyes cannot be discerned , but so far as in some sort they differ in colour , yet a distinct perception of Colours proceeds not only in this , that all the Rays proceeding from all points of Bodies meet in the bottom of the Eye , in so many other Rays , or thereabout ; but also from the multitude of the Capillaments of the Optick Nerve , whose extremities are contain'd in that space which the Image in the bottom of the Eye possesses . Whence no doubt is to be made but STRABO and that Spanish LOPEZ injoyed so accurate a contexture of the Retin Tunicle , and had so docile a Chrystallin Humour , that they were able to contemplate Objects more distinctly than others , and have a prospect of them at so vast a distance . XI . How it is that some Men see by Night . From this very cause it happens , that some Men , like Owls , see even in the darkest Night , as it is related of the Emperour NERO and others , namely , that they have most slender and very moveable Fibres , of which their Optick Nerves are framed ; so that that little Light which remains in the most obscure Nights , suffices to affect their Fibres , and to excite the sense of seeing in them . XII . How a Body appears where it is not . If a Stick fired at the end be swiftly whirl'd about , there will appear to our sight the Image of a fiery Circle , tho' the Stick be not in all points of the Circle . The Reason hereof is , because the Stick makes an impression in those parts of the Retin Tunicle which are circularly disposed ; so as that the fore-parts being agitated by the celerity of the motion , still retain something of its impression , whilst it agitates the last parts . For this motion is not at one and the s●me individual time , but in divers successions of Moments , so swiftly performed , that the Vibration of Fire imprest upon the Eye , remains in the first parts of the Retin Tunicle ▪ when the Stick hath declined to the other parts of the Circle . When no wonder if the Rays entring the Eye by the Pupil , oft-times effect at once a sensation of Greenness , Redness , Blackness , Whiteness , and other Colours ; because the Rays modified by divers Colours , in divers successions of Motions following each other with incredible swiftness , hit upon the Retin Tunicle , and leave a little while their agitation , till other Rays presently entring the Pupil , impart in their turn their motion , and there leave it some time with oothers . XIII . How it is that they who have a Cataract concht , see obscurely . Those that have a Cataract Couch'd , discern but obscurely all visible Objects ; whereupon that they may the more clearly and distinctly see them , they make use of Convex Glasses . To make this the more clear and evident , we must observe , that a Cataract is not any Skin ( as hath been long believed ) growing between the Chrystallin Humour and the Uveous Tunicle , which may be taken off by a Needle , and drawn down to the inferiour part of the Eye , but that it is the Chrystallin Humour it self , which in tract of time grows flaccid and weak , and is separated from the Ciliary processes , as an Acorn when ripe , is easily separated from its Cup , forasmuch as it is removed with little or no trouble , and deprest to the very bottom of the Vitreous or Glassy Humour , a small part , in the mean time , of the said Vitreous Humour succeeding in its place . The Cataract therefore being thus taken away , the Chrystallin Humour also must of necessity be taken away , or at least be rendred more plain , or less convex , whereby it comes to pass that the Rays proceeding from all points of the Object , are not sufficiently broken or made bending , so as to be united in the Retin , when they arrive there : Whence the Vision or act of Sight must needs be confused . To which infirmity the Chrystallin Convexity only gives relief , as causing the Rays which before were divergent to become convergent , and to enter the Eye with such a disposition . XIV . Divers Colours appear upon sight of the Sun. Upon sight of the Sun , or any other Glaring Light , we seem to behold various Colours . The Reason is , because such is the nature of our Mind , as by virtue of the motions that occur in that part of the Brain whence the tender Filaments of the Optick Nerves proceed , to be capable of having a Sense of Colour ; whereupon in regard the Agitation by which , after the Eyes shut , the Capillaments of the Optick Nerve still palpitate , and as it were tremble , is not strong enough to render the Light so bright , as that was from whence it came , it represents Colours less intense , and as it were dilute ; but that these Colours are produc'd from motion , may from hence be easily concluded , namely that growing pale by little and little , they are changed , and passing mutually into each other , vanish by degrees . XV. How it comes that the top of a Mountain far distant seems contiguous to the Horizon . The top of a Mountain reaching far beyond the visible Horizon , appears to us as joined with it , together with the Hill it self , and the Sun when it rises or sets seems to adhere to , and be united with the said Horizon . The Reason of this appearance is , because things appear at no distance from us , when the Rays cohere , and without the interposition of other Bodies apply to our Eyes ; as it happens in the forementioned case : Forasmuch as tho' there is a vast distance between the Sun and the Horizon , and many Bodies are contain'd therein , yet because none of those Rays arrive at us , but only from the Sun and the Horizon , it happens that they seem among themselves contiguous and cohering . For the distance of the Horizon is no other ways known by us , than from the diversity of Bodies interpos'd between us and them ; whence if those intermediate spaces should happen to be obstructed , and nothing of them could possibly be transmitted to us , we must needs judge those things which we see afar off , to be contiguous and separated by no interval . Wherefore GASSENDUS thinks that Dogs bark at the Moon , because they apprehend it to rise near the House top , and so to be very little more distant than the House it self , and not much bigger than that part of the House comprehended by it . XVI . Ditches from a low place appear joined together . So if we behold many Ditches , the sides of them plainly appear to us as not much distant from each other , because they are represented to us by Rays from the Eye , to which many also that slide from the bottom , mingling themselves , are carried upward ; but if we behold those Ditches Horizontally , or from a low place , their sides seem to us to have no distance at all , because no Rays proceeding from the bottom , reach the Eye , and those which proceed from the sides , stick as they arrive . XVII . Why Drunken Men see double . Drunken Men see every Object double , which VIRGIL asserts also of Mad Men. 4 Aeneid . This proceeds from the dark and malignant Vapours , either flowing from the Wine , or stirred up by the malignity of the Distemper , which while they pervert the situation of the Optick Nerves , they make such a percussion of the Brain at the same time , as if the Rays exhaling from the Objects , proceeded from detorted Eyes : Whence those that by Nature , or any chance or accident , have their Eyes drawn awry , see all things double . XVIII . Why we see from the dark , things set in the light We find by daily experience , that standing in the dark , we plainly see things put in a lightsom place , but not on the contrary , from a light place things set in the dark . The Reason is , because the Rays of Light may be directed to the Eye , being in a misty or dark place , that some of them may make their way into the said obscure place , if the passage be open enough , and the Light gliding through it into the Pupil of the Beholder , arrive as far as the Retin Tunicle . But he who is in the midst of the Light , cannot apprehend those things which are in an obscure place , because from thence no Rays proceed , which either directly or by reflection can touch the Retin Tunicle ; unless by chance the darkness be some way or other intermingled , and remit some Rays of Light ; for then nothing would hinder , but that a few Rays reflext from things would sensibly affect the Eye , and represent some sort of Image of things . XIX The Hyperboreans have generally very weak Eyes . The Hyperboreans or Inhabitants of the most Northern Countries , have generally bad Eyes , and are dim-sighted . The Reason is , because they are perpetually conversant in Snow , which above all things reflects back the Light , by reason whereof their Eyes must needs be strain'd , or because their Retin Tunicle , hardned by the external brightness , is less capable of expressing , or entertaining an affection necessary for Sight . When as we see that the Chrystallin Humour becomes congealed with cold , and attains to such a rigidity or stifness , that it can neither be bent , nor contracted , nor unfolded . XX. Bodies moved with a rapid swiftness are not perceived . A Cannon Bullet , or any dark Body , passing with incredible swiftness through a whited Wall , becomes altogether imperceptible . The Reason is , because the dark Body , as likewise that so rapidly moved , making no impression upon the Eyes , so lightly , at that time , interrupts the reflection of the Rays of Light from the Wall , that the Eye , for that small interval of time , preserves the commotion which those Rays immediately before produc'd . The contrary whereof we find by experience in a Firebrand whirl'd round , in regard the Brand impresses its force upon the parts of the Retin Tunicle formed into a round , because then the rapidity of the motion causes the part first moved to keep yet a little while that impression which the Brand makes upon the last . XXI . Why Goggle-eyed Persons cannot see clearly at any great distance . Those that have prominent or Goggle Eyes , as the Myopes or Purblind People , see not Objects distinctly at any great distance . The Reason is , because the Rays of Light driven and refracted upon the prominent Eyes , meet sooner than they can arrive at the bottom of the Eye ; Forasmuch as they represent the Image , not in the Retin Tunicle , but on this side ; namely in the Vitreous Humour . Wherefore Goggle-eyed Persons are wont to make use of Prospective Glasses , because by them the Rays are divided , and do not so soon concur and meet together . XXII . The Object is varied according as it is represented in divers Glasses . An Object in a plain Glass appears just as big as it is , but in a Convex , less ; and in a Concave , greater . The Reason is , because a plain Glass remits towards the Eye all the Rays from each direct point of the Object , and thereby every thing must needs be represented just as big as it is . Whereas the Convex , by reason of the obliquity of the incidence , diversly disperses this way and that way a great part of the Rays ; whence it is that few of them are directed into the Sensorium ; and on the contrary , the Concave not only remits to the Eye the Rays which are reflected from the plain , but also very many more , which come from the little devexitated regions of particles , and those of points also elsewhere obverted . Whence it comes to pass , that the Figure is increas'd , and exceeds in magnitude the represented Object . XXIII . Why some Men see nothing , but at some certain distance . Some Men perceive not Objects , except at some certain distance , in so much that either very near , or very far off , they see but confusedly . The Cause hereof is chiefly custom , as when Men use themselves to look at such a distance ; for the Muscles which are disposed to the immutation of Figure , are rendred as it were stupid , and unapt for their wonted functions ; not otherwise than the rest of the Muscles of the Body become unuseful for the motion of the Members , after they have stood long unmoved . To which may be added , that the Membrans which contain the three Humours of the Eye , may possibly have become so hard , as not to be so flexible as formerly . XXIV . How a Blindman saw a little , by compressing his Eye . A certain Young Man being blind , while he prest either Eye towards his Nose with his Finger , could see a little , otherwise nothing at all . Possibly this might be , because by the said compressing of the Eye , he inverted the convexity of the Chrystallin or Uveous Humour ; whence followed a change of the Projection , and consequently another Affection . In like manner as when holding to our Eyes a Leaf of a Book printed in a very small Character , we keep one Eye shut , and press the other down with two Fingers , we shall fancy the Letters to be increased , and become bigger . XXV . Why the whole Sun cannot be seen in an Optick Tube . The whole Discus of the Sun cannot be seen by the help of an Optick Tube , tho' the whole Image be projected upon an opposite sheet of Paper . The Cause hereof is , by reason that the Optick Tube , in respect of its Cavity , divides the many Rays , and suffers them not to fall into the Eye ; whereas all the Rays of the Sun fall upon the Paper , and form therein a far more large Effigies of the Sun. XXVI . Vision is made much more distinct , by a hole made by a Needle in a Card or Paper . An Object which appears confused , as being too near the Eye , may be seen distinctly enough at the same distance , by any one through a hole made with a Needle in a thin Card or piece of Writing Paper . The Reason is , because the Eye , then receiving a lesser quantity of Rays from every point of the Object , each of them forms its Image , even in a very narrow space ; so that those which proceed from the two Neighbouring points scarcely confound their actions . XXVII . How a Stone at the bottom of a Vessel comes to be seen by the pouring in of Water . If any one putting a Stone or Counter into a Vessel , so place it , that he can no longer discern it , yet by pouring water into the Vessel , directing his Eye precisely to the same place , he will see the Counter or Pebble sticking at the bottom of the Vessel , tho' it did not appear there before . To this there can be assigned no other Cause , than that the Rays reflected before from the Counter , there being then no sort of Body interposed between , were directly sent into the Air , and by consequence smote nothing but the Forefront , and neighbouring parts of the Eye : But upon the infusion of the Water , the Beams passing through it , are refracted , and so applying towards the Eye , render the Stone visible and conspicuous thereunto . Thus we see in the refraction of the Rays made in the Horizon , the Sun being 34 minutes high or thereabouts , appears much higher to us , than it would appear , if those Vapours were absent , through which the Rays of Light are transmitted , and consequently being half a degree and 30 minutes diameter , it may be all seen , tho' deprest and wholly underneath the Diameter . XXVIII . How things viewed through a Convex Chrystal Glass appear . Things appear bigger than they really are , through a Convex Chrystal Round : As we find by experience in old Men , who being not able to discern Letters , tho' near at hand , help their sight in reading , by using the Convex Glasses of a pair of Spectacles : As also in those that make use of Microscope Glasses , for the viewing and discerning of the Hairs of a Flea , and even the minutest and smallest Bodies imaginable . The Reason is , because in a Convex Glass plac'd between the visible Objects and the Eye , the Rays which before came short , and hardly reach'd the Ball of the Eye , are forc'd into the Pupil , so that the Eye receives the Rays from the particles of the Objects formerly hid ; and since the Rays before join'd with them are separated from those interposed , and many particles seen from each part , they must needs be thereby inlarged , and represent the whole bigger . For when the angle is inereast , the visible Object coming next in view , by reason of the great divarication of the Rays entring cross-ways the Pupil of the Eye toward the Retin Tunicle , must needs form a great Image in the bottom of the Eye . XXIX . Through a Telescope things appear greater . Hence it comes to pass , that through a Telescope or Optick Tube , we see things at a good distance , in their full magnitude , and discern them very distinctly . For this advantage a Telescope brings , that it causes the visible Object , by reason of the great Pupil of the Tube to be discerned with more Rays , and by reason of the convexity of the utmost Glass gathering the Rays under a greater angle of Vision . Moreover the divarication becomes great , of those Rays , which entring cross-ways the Pupil or utmost extremity of the Tube , towards the Retin Tunicle of the Eye , cause a large Image of the visible Object to be described in the bottom of the Eye . XXX . Why from two Eyes any Object appears singular . The Object appears singular , or but one , tho' transmitted to the Brain through both Eyes ; and tho' the Optick Nerves meet not in conjunction , as appeared in the dissection of a certain Young Man , in which VESALIUS found them to be separate or divided . The Reason of the simplicity of Objects is referred to the Conarion or Pineal Glandule , situate in the midst of the Brain , in which the two Images , which proceed from the two Eyes , are united before they arrive at the Soul. For there is no other part in the Brain which is not double . For as for the Cerebellum , except in superficies and name , it is not one : Nay , it is manifest that its Vermiformous or Worm-formed Process , and the Marrow of the Spina Dorsi consists of four parts ; two whereof proceed from the two Medieties of the Brain ; the other two from the two Medieties of the Cerebel : But the transparent Septum , or Fence which separates the two formost Ventricles is also double , and consequently that Pineal Glandule only is single , in which the Species proceeding from both Eyes may meet , before they are conveyed to the Soul. XXXI . Why the Picture of a Man seems to look upon all Persons in the Room . A Painted Person seems to cast an Eye upon every part round about him , and as it were to look upon every one in the Room particularly . The Reason hereof is , that the Eye of the Picture is in plain , and consequently the Rays may be brought from all its points to the Eye of the Beholder . But the Eye of the Living Person being of a Convex Figure , and a great part of it hid , it is not able to send out its Rays every way , as we find apparent in Carved Images , whose Eyes being exerted or sticking out , and shapt into a certain Curvity or Convexity , cannot emit the Rays every way . CHAP. VI. Of Imagination . I. Whence arises the diversity of Wit and Imagination . ALMOST all Men differ some way or other in Wit , and Imagination . This chiefly proceeds from the various Conformation , Figure and Magnitude of the Brain , Texture of parts , substance and motion of Animal Spirits . For all these things very greatly conduce to the quickness or slowness of Wit and Imagination . Forasmuch as if the bulk of the Brain be either lesser or bigger than is fit , the Wit will either be precipitate or slow ; either because the Spirits themselves have not a passage free and open enough , or because the equal motion of them is put out of order through the default of the Figure ; or perhaps because in a larger bulk the Contexture of the minute parts is courser , or there is some other more occult Cause , which represents the Images of things distorted or ill delineated . II. Whenee proceeds the various Inclinations of Men , some to one Art or Science , some to another . Whence according to the various degrees of Imagination , Men are variously carried by a certain innate Inclination , some to the Mathematical Arts , others to Eloquence and Poetry , others to the Art of Medicin , that is , the Practice ; for the speculation thereof , which comprehends the Principles and Rules of Medicin more properly relates to the Intellect or Understanding ; as the Practick Part of it which examins all the Indications and Circumstances of a Disease , and takes opportunities of healing , belongs chiefly to the Imagination : Whence it happens that the most learned and acute Physitians are not always the most happy in curing of Diseases . The same thing is for the most part observable in other Sciences : For those Men who are the most Learned and Skilful in the Law , are judged the least fit for other Civil Imployments . III. Many things occur to our Imagination , which never offer'd themselves to our Senses . Many things , through our inadvertency , occur , which before were never offered to our Senses , not left any Vestigium of themselves ; as when , for Example , we conceive in our Imagination a Hippocentaur , and other Chimaera's , which never presented themselves to our Eyes , such as we form'd them in our Fancy . But tho' perchance those things which we conceive in our Imagination , were not before in our Senses , as to their Composition ; nevertheless it cannot be doubted , but that the parts of which they were constituted , have at some time or other entred the Brain ; or if haply not by themselves , yet by some other thing which had a great affinity with them . For if a Horse and a Man , for example , be represented to our Eyes , and the Species of both be imprest upon the Organ of Imagination , we easily compound them together , and conceive a Hippocentaur or Animal , consisting of Man and Horse . In like manner we may determin of the vestigia of other Objects , by the sight whereof we form many things which before fell not under our Senses . IV. Why those that look upon the ground from any high place , are taken with a Vertigo . They who , not being so accustomed , pass over high Bridges , or from a high Tower cast their Eyes upon the ground , are commonly taken with a Vertigo , and fancy all visible Objects to turn round . This proceeds from Imagination , which apprehends danger from the situation or posture of the Body , and dreads the hapning of any mischief to it , whence being very cautious how it transmits the Spirits into the Nerves , and how to direct them more securely , it recalls them into the Meditullium or inmost part of the Brain , and so perverts them from their accustomed afflux and Irradiation ; and while it indeavours to direct them into better order , overmuch sollicitude compels them into a certain confusion and irregular motion . And for this very Reason it is , that bold Persons , and Men in Drink , in regard they take little care of the Regimen or Government of the Animal Spirits , suffer no such Vertigo . V. Why Men in a Fever fancy they suffer th●se things which they really do not . Some Men seised with a Disease , especially those in a Fever , fancy they do or suffer many things which indeed they do not : For I have known one in a Tertian Ague often complaining that he was grievously afflicted with a wound in his Shoulder , when at the same time he had in reality no wound at all . This happens by reason that the Species which are imprest by the course of the Spirits , or raised by means of the Vestigia of the Memory are equally vivacious , and indued with no less strength than those which proceed from the Senses . For when at that time the Animal Spirits are agitated above what health requires , they concur with the Vestigia of the memory to the creation of other Species , which represent all things to us as being without us , and present to our Senses . It also happens sometimes in a Disease , that Objects make no impression with which the Mind can compare those Species , which the memory , or the force of the Spirits there ingender . VI. Witches in Imagination , see places f●● remote . Thus it is probable that Witches , buried in a deep sleep , imagine they see Places far remote , Towns , Cities , Palaces , Troops of Men and Women , &c. and being awake describe them to a tittle , as if they had seen them with their Eyes . Which doubtless is done by the help of the Devil , who represents the Ideas of those things to their Imagination , and so strongly imprints it in them , that they make no manner of doubt but that they were present at those sorts of Shows . Book . 2. Part. 9. Chap. 6. G. Freman I. Kip Scu To the Right Honourable Charles Sackvile ▪ Earle of Dorset and Middlesex , Baron Buckhurst and Cranfield , Knight of the most noble order of the Garter , Lord Leivtenant of Sussex , Lord Chamberlaine of his Majesties Household , and one of the Lords of their Ma t ys . most Hon ble . Privy Councell &c. a. This Plate is humbly Dedicated by Richard Blome . Some Marks or Characters are imprinted in Births by the force of the Mothers Imagination ; this appears in Mothers that long for any thing : For upon their touching of the Cheek , or any other part of the Body , the thing so earnestly coveted , for example , a Cherry , Grape , or whatever else it be , is commonly imprest in the same member . And FORESTUS makes mention of a certain Noble Woman , who , whilst she was with Child , having broke her Arm , brought forth a Male Child with a broken Arm. The Reason hereof is , that the Image of the Cherry or Grape imprinted in the Brain of the Parent , is conveyed by the motion of the Spirits to the Infant , by reason that the same disposition which inheres in the Mothers Brain , and moves in her the desire of the said Fruit , passes also into the Brain of the Infant , corresponding to the part affected : Whence the Mother touching her self in that part , in the time of her longing , produces there the effect of her Imagination . Because the Mother thus touching her self , there comes presently into her mind , the figure of the Image to be imprinted on the Birth ; from whence a motion of some kind of shame , and also fear arises ; without both which no mark is ever imprinted in the Bodies of any Infants . So also for the other Instance : For since every one of the Infants members is answerable to every one of the Parents , and the Fibres and Humours of both are continuous , no wonder if the Male Child of the foresaid Noble Woman was born with a Broken Arm , and the same remedies being applied to the Arms of both Mother and Infant , both were separately cured . VIII . The powerful force of Imagination . To the same cause may be referred what hapned to an Apothecaries Wife at Bononia , who being with Child , and seeing through a Window in a Neighbours House , Snakes flea'd , and hung to dry in the Air , brought forth a Child with a Snakes Head : So another Woman in Sicily , according to the Testimony of ALDROVANDUS , observing a Lobster or Sea ▪ Crab taken by a Fisherman , and being taken with an earnest longing for it , brought forth , together with the Birth , a Lobster altogether like what she had seen and long'd for . IX . A Party-Colour'd Child born of a white Woman . Hereunto may be added another History , quoted by JOHANNES SWAMMERDAMUS in his Treatise entitled , Uteri Muliebris Fabrica , In which the force of Imagination in a Woman with Child is clearly demonstrated . A certain Woman of Utretcht being with Child , and going to a Shop to furnish her self with some things for her Domestick Use , upon her first entrance , sees a Negro , at which sight being affrighted , she went home , thinking no other but that she should bring forth a perfect Black. But at last recollecting her self , she borrows a remedy against this strong Imagination , from another equally strong , perswading her self that all the Blackness in her Imagination might be wash'd off with hot water ; in order whereunto she kindles a Fire , heats a Skillet of Water , and washes her self all over from Head to Foot. What follows ? The time of her Delivery arrives , the Child is born , hath all his Teeth entire , and appears a perfect White , those places excepted to which in the Mother , while she wash'd her self , the water reach'd not ; such as in the Hands and Feet , the Interstices or innermost parts of the Fingers and Toes , and some other parts of the Body , where there appeared manifest signs of blackness and black Spots . X. How it came to pass that an Aethiopian Queen brought forth a White Child . PERSINA an Aethiopian Queen , beholding , in the midst of Copulation , the Picture of a White Child , brought forth a perfect White ; and on the contrary , another Queen an European , on the like occasion , brought forth a Negro Child . This some Physitians attribute to the Seed , which according to its various quality , induces various forms : So that if it be Yellowish , they will have it to produce a Ruddy Colour , if Cinericious or Ashes-like , a Brown Colour ; if whitish , a White . Which Opinion , tho' it be common , yet in this matter , Imagination must claim the principal part . Because in regard the Nerves , through which the courses of the Spirits are incessantly carried , are extended from the Brain into all parts of the Body ; the force of Imagination , especially if it be a little more strong than ordinary , by operating upon the Bowels , and exciting the motions of the Humours , may very well induce a Black or White , or any other Colour . So Jacob's Sheep , according to the different aspect of the Rods set before them , brought forth their Young of a various Colour . XI . Imagination performs wonderful things . By the certainty of this conclusion , HIPPOCRATES cleared a Woman that lay under suspicion of Adultery , upon bringing forth a Child utterly unlike her Husband ; finding that it was very like a Picture which hanging up in her Bed-Chamber , the said Woman look'd upon very stedfastly in the time of Coition . For the same Reason is to be excused that Lady of the Noble Family of the Ursini , who brought forth a Male Child like a Hairy Bear , because all the while she was big , she had very frequently before her Eyes , and consequently in her mind the Pourtraitures of Bears , which are the Arms of the Ursini . XII . Deformed Whelps are to be removed from the sight of bigbellied Women . Wherefore I judge nothing more blame-worthy among a sort of light and wanton Women , than the great delight they take in Whelps , young Apes and Monkies , taking them up in their Arms , hugging , stroaking , and continually handling them , since by this frequent having them in their Laps and Sight , they habituate their Imagination to I know not what strange and deformed Ideas , and so often bring forth a Birth that hath something of an odd , ill favoured sort of Meen in its Countenance . Wherefore I cannot but look upon it as very convenient that those sort of Dogs , vulgarly called Camusii , should be sent away , that the sight of them may not prejudice bigbellied Women , and be the occasion of deformed Births . XIII . Why some delirant Persons have always the same discourse . Such a kind of madness possesses the Minds of some Men , and so perverts their judgment , that in their discourse they have always one thing by the end , and neither give attention nor answer to the words of other Men. I saw a Phrenetick at Paris , who for a whole day together repeated the same words over and over again ; and if by chance he was interrupted by any one , he would stare upon the Person so speaking to him , as it were intending to answer him word by word , but no sooner had the said Person done speaking to him , but he was at the same Story as before . In such sort of Men it falls out , that so great a perturbation possesses the Animal Spirits , as to suffer the impression of other words to adhere to the Glandule , but a very little space , whereby it comes to pass , that the first Image of things by which it is detain'd , immediately returning , they ( as having forgotten the words last said ) are not able to give any answer to them , but only conformably to those things which impel the Glandule , and are at that time represented to their Mind . For I am apt to think that these sort of Men are not troubled with a Phrensie , but only so long as their Soul has no command over the motions of the Glandule ; or because the Animal Spirits are in such commotion , and are carried above it with so unequal a course , that they shatter it without measure , and raise upon it innumerable species , which presently flow out and slip away . Or else , because the course of the Spirits imbues the Glandule with some Vestigia of Memory so tenaciously , that the same Image is always represented from which the Soul is not able to disingage it self . XIV . How it comes to pass that sometimes we are not sensible of things present . In like manner some Persons are not sensible even of those very things which their Organs perform , as it happens when the Soul is wholly taken up or diverted by any strong thought , by reason that the Animal Spirits flow in so great a quantity through the tract upon which this thought depends , that those which remain are no longer able to supply the tract , which the Object present indeavours to impress . For which Reason it is , that those who are seiz'd with any acute pain , cannot possibly fix their thoughts upon any other thing but that . XV. Some Men are carried by their distemper to fancy themseves Kings Some imagine their Nose to be of so great a bulk , as not to be passable through any Door : Others believe themselves to be Kings , as that Spanish Servant whereof JOHANNES HUARTUS makes mention , who verily believing himself to be a King , made many grave and wise Discourses concerning Government . MONTANUS speaks of some who fancied the surface of the World to be made of Fine Glass , and that Serpents lay lurking every where underneath the said Glass ; upon which conceit he kept his Bed , thinking himself there safe as in an Island , and that if he should stir out of it , he should break the Glass and so fall upon the Serpents . The Reason of this extravagance may be drawn from what hath been said ; for whilst by any tenacious disposition of the Spirits , and certain firm tracts of the Memory , the Glandule is converted to that part of the Brain where the pores are opened ; by the opening whereof the Species of King , Serpent , Glass , &c. may be revoqu'd , or else is form'd at that very time ; the Soul beholding such a Species , considers it self as joined to that very King , Serpent , Glass , &c. which are represented by the said Species , and as it were a Composition , making together with it one whole . I knew one at London , who took upon him to be Archbishop of Canterbury , so created by the King , and undoubtedly ordained to succeed the present Incumbent in that See , when as at the same time in all other things he seemed to be a person sufficiently discreet and serious , and labouring under no other Phantasm ; for he carefully minded his own affairs , spent his time seriously and wisely , and providently behaved himself in executing the Imploy he was ingaged in : All which I suppose may well enough be if the agitation of the Spirits by which the Glandule was formerly governed , ceases at that time , so long as nothing comes in its way that can renew those pristin motions , until the Fit returns , and a new access comes upon the persons affected as it were upon those that are subject to a feverish Distemper . XVI . Of one that imagined he had Frogs in his Guts . A certain Person , when by chance fell into a Well , where there were abundance of Spawn of Frogs , and taking into his Body , by the fall , some of the Well-water , he afterwards took a deep conceit , of his having young Frogs in his Belly , that he could not be otherwise perswaded for many years ; in so much that for seven years together , he betook himself to the study of Physick , meerly for the finding out of a Remedy for this supposed Distemper ; moreover he travelled into Italy , France and Germany to consult the Physitians of those Parts concerning the said affair , still fancying that the rumbling of his Guts was the Croaking of Frogs , nor was he otherwise cur'd at last but by deception ; forasmuch as a Physitian , acting above others by policy , conveyed live Frogs into his Excrement , and so made him believe that he had voided them by Stool . And all this while , setting aside the recourse of this Imagination , if it did recur , in all other things he acted very prudently , and made not the least discovery of any extravagancy : Which might be , because the Animal Spirits ceased sometimes to flow through that tract of his Imagination where the extravagance was imprest , as being diverted by some other occasions ; so that he appeared discreet enough till such time , as upon the renewing of the cause , the access of his whimsical Fit returned , that is to say , till such time as some cause had disposed the Animal Spirits to the same course . CHAP. VII . Of Memory . I. How it comes to pass that Men differ in Memory . AS Men differ in Wit and force of Imagination , so also in Memory . For some there are who presently get a thing by heart , and as soon forget it : Others get it soon , and firmly retain it : Others are slow in getting a thing into their Memory , yet when once gotten they do not easily lose it . Lastly there are who slowly learn a thing , but forget it soon . Book . 2. Part. 9. Chap. 7 G. Freman . Inv. I. Kip. Scul . To the most Honourable Henry Marquess of Worcester , Son and Heyre of the Right Noble Henry Duke of Beaufort &c. a. This Plate is humbly Dedicated by Richard Blome . II. Why Infants are deficient in Memory . Children and Infants are less indued with memory , and sooner forget those things which they have learn'd , than those who are more advanc'd in years , or have arriv'd to their middle Age. The Reason is , because the Memory depends upon certain Vestigia or Tracts in the Brain , after that the Species of any thing hath been imprest upon it . Whence if it happens that any parts of the Brain are changed by accretion or diminution , those Vestigia must needs be all of them disturbed , and some of them vanish . But whereas Children are continually growing , and something of new substance always added to them , the Pleits in the Brain form'd by the transcurse of the Animal Spirits are easily perverted and lose their pristin Order ; as the Pleits or Folds in Paper are easily effaced if any of them be worn , or any new substance be super-induc'd : To this may be added , that the Brain of Children is too soft and moist to retain tenaciously any thing committed to it . For tho' it easily receives things , yet it retains not any distinction of them one from another , being like nothing so much as Mud tempered with a great deal of Water . III. The Memory very prompt in Young Men. The contrary happens in Young Men , who having a Brain very well tempered , that is , neither too moist nor too dry ; have also their Fibrils more subtile and flexil ; and hence it is that the impressions of Objects are more easily received in their Brain , and longer conserved ; and hence it is that Infants are much more capable of new habitudes than those of riper years , by reason that having the Nerves , Muscles and the Brain more tender , the Animal Spirits might the more easily form their passages : Whence it comes to pass , that Infants indeavouring and labouring to speak , get , in time , so great a facility of expressing themselves , that they pronounce their words with an incredible swiftness . IV. Some easily learn the things they hear . Some Persons learn Tunes with little or no trouble , and afterwards without any study or labour of the Brain , express them , so as to make true and exact Harmony . This so happens by reason that the Animal Spirits acting within the Brain from the distinct accents of the harmony heard , are disposed into peculiar divisions , according to which , when they flow into the process of the Auditory Nerve , like Antomata , as it were spontaneously , and by a certain succession of species they easily express the Tunes of the Voice , or Instrument which they had taken in with their Ears . So Musitians , tho' intent upon other affairs , yet neverthess can so guide their Fingers to find out the Musical Stops formerly taught them , that they touch the Instrument plaid on with wonderful skill , dexterity and sweetness . V. The Memory of a certain Learned Man , hurt by taking Tobacco . The Smoke of Tobacco getting up into the Brain , weakens the Memory , and causeth stupidity and dulness , an excellent example whereof we have had in a Person of extraordinary Learning and Ingenuity ▪ and once endowed with an excellent Memory . And this might very well happen from the Corpuscles of the fume suck'd in , which entring the Brain , obstructed those Vestigia which represent the Images of Things , and consequently rendred them uncapable of recalling any thing to Mind . Yet the said Fume being exhaled and drawn out , he recovered his former faculty , and called to mind many things which he had formerly known ; much after the Nature of an Apoplexy , by which the Blood being effused out of its Vessels into the substance of the Brain , utterly obliterates the Idea of all things formerly known , no Vestigia of them remaining in the Brain . VI. Old Men , tho' they easily forget what they did but a little before , yet firmly remember all the actions of their Youth . Old Men , when they arrive to their decrepit Age , are almost totally devested of their Memory , and scarcely remember any thing which they did but a little before . Yet at the same time remember the Actions of their Youth , retaining them firmly in memory . The Reason why Memory decays in Old Men is , because of the over-dryness of the Brain . For dry things cannot be easily wrought upon , so as to be able to receive impression ; or if they do admit of an entrance or impression , they soon return to their pristin state , and recover their former dispositions . But Old Men retain those things which they have received into their Memory a long time since , because the parts of the Brain are hardned , and its pores in which the Spirits formerly ran up and down , have acquired a certain facility of opening themselves in the same manner at the presence of any object upon the Spirits repairing to them . Hence it is , that they highly extol the times past , because they have a remembrance of things done heretofore , but presently forget late actions and occurrences . VII . How Artificial Memory may be obtain'd . Some Persons willing to supply this natural defect of the Memory , have invented a way of Artificial Memory ; as thus , having hired a Chamber , they hang upon the Walls thereof several Pictures , to each of which they apply their Cogitations , and afterwards when they have sufficiently exercised themselves in uniting certain thoughts with certain figures , they make use of this their Artificial Memory , as they grow older and older , thus habituating themselves to recall this or that thing again into their Memory , according as they contemplate this or that Picture . For they cannot look on the said Picture , but presently there is excited in them that very thought which they had formerly join'd with the said Picture : For those things which are once joined in the Mind , remain joined there for ever . VIII . Why we cannot remember one thing without another to which it was join'd . Hence if any thing that we knew before slip out of the memory , and we call it afterwards to mind , that thing also presently occurs which was joined with it . So that if any particular Man comes into our remembrance , we also call to mind the injury we have received , if we have received any from him . The Reason is , because when the Vestigia of , the Memory have brought the Image of any thing upon the Glandule , the Spirits in like manner returning through the same pores , bring back also another Species to which the former was joined ; whereby it comes to pass , that the Spirits flowing into the same Muscles , dispose our Body to put forth the same actions again , which it put forth upon occasion of the Object which first excited them , and this by experience we find to happen not only in Man , but also in Beasts ; for if we receive with a good Cudgel , a Dog ready to fly upon us , and so put him to flight , the said Dog , if we afterwards meet him , tho' without any Weapon , will as soon avoid us , as if armed ; because by the means of the blows wherewith he was formerly entertain'd , the course of the Spirits which our aspect excites , becomes joined with that course which the Spirits produc'd . So that those two ways meeting in the Brain , and being confused into one , it matters not which of them opens to effect the motion of the Muscles , and excite the said actions . IX . Our Memory is more vigorous in the Morning than in the following part of the day . Those Things which we revolve in our Mind in the Morning , we both more easily commit to memory , and more firmly retain , than whatsoever we think on the remaining part of the day . The Reason is , because at that time the Brain is free , and not yet hindred by any Vestigia of things ; for as in Paper a multitude of Pleits , and in the Air a great number of sounds brings confusion ; so in the Brain the delineation of many things disturbs the Vestigia , and suffers them not to repose in their due places , nor to be perceived according to their proper nature . For the Sense being intent upon many things , is so much the more distracted and lessened , by how much the more it is imployed in contemplating several distinct things . Add hereunto , that the Brain in the Morning is less hindred with Vapours , in regard the concoction of Meats being now finish'd , the Fibres thereupon are the more expedite , both for quickning the motions of the Brain , and putting on a new affection . X. Things seen are better remembred than things imagined . We find always by experience , that we better remember those things which we have seen by a Corporal View , than what we have apprehended by the Eyes of Imagination ; forasmuch as the Nerves which are the Organs of Sense , more invigorate the Brain , and impress in it deeper Vestigia or tracts than the Animal Spirits do which open the Vestigia of Imagination , and consequently we must of necessity more distinctly remember things seen , than things imagined ; and for this reason it is that we know better the distribution of the Veins in the Liver upon the sight of one dissection of that part , than by reading it often times in a Book of Anatomy . XI . Some persons after a fit of Sickness , forget even the very Names of their Parents and Kindred . A Fit of Sickness or Distemper sometimes takes away all Memory , and so weakens that faculty , that they who before were indowed with an excellent Memory , after the said Disease scarcely remember any thing . PLINY makes mention of one , who falling from a high place , totally forgot , during the remainder of his Life , the Names of his Parents , Friends and Kinsfolks . And MESSALA CORVINUS after a great fit of Sickness forgot not only the Names of his Relations and Domesticks , but even his own Name also . Moreover a certain Student of MARSEILLES , after a wound received , so utterly lost his Memory , that he was forced to learn all over again , the first Rudiments of the Arts and Sciences . The Reason is to be taken from the force of the Distemper or Blew given to the Head ; which changes the disposition of the Brain , and perverts the pores formed by the means of the Spirits . Whence it comes to pass , that the Vestigia are expunged , or the contexture of the Fibres left in such a state , as renders it less apt for the foresaid Function . For as Liquor spilt upon Paper , washes out all its pleits or folds so utterly , that when the Paper is dry there are left no signs of them ; so it may come to pass that the Morbifick Humour may so far prevail as to take away all the Pleits of the Brain , so that no Vestigia of them may remain which the Sick Man knew before . On the contrary , it may possibly happen , that they who before had a dull and heavy Memory , may from the same causes acquire a happy and lively one . As is related of Pope CLEMENT the Sixth , having so happy a Memory , that whatsoever he read he made absolutely his own , and never forgot it . The Cause of which Faculty PETRARCH ascribes to him from a wound given him in his Head , by which doubtless some Obstructions were dissolved , and the passages of the Brain opened , whereby a commodious way was made for the Spirits to pass to and fro . Another Person is mentioned by FULGOSUS , Lib. 1. Cap. 6. in the Reign of the Emperor Friderick the Sixth , who after breathing of a Vein , keeping his Memory intire in all other things , forgot to Read and Write as utterly as if he had never learnt either : But a year after , being let blood again , he recovered his knowledge of Reading and Writing , and became as it were a new Man. XII . Why very soon ripe Wits soon decay . In like manner it happens , that they who in Youth are brisk and active , when Age comes on , grow heavy and slow , and have little or no appearance of their former Wit and Ingenuity . Which proceeds either from the Blood vitiated , or from the Obstructions of the Brain , or from that Nervous Liquor , which being , according to the Modern Physitians , the Vehicle of the Animal Spirits , after too much Agitation or Evaporation grows flat . Hence oversoon ripe Wits which make such a clutter before their usual time , are not of long continuance , but in a short time decay and languish . Since such is the state of Nature , that those things which are best tempered , and to last a long time , are ripened by little and little , and as it were by degrees ; so Summer Fruits soon decay , because the active principles of which they consist , quickly evaporate . CHAP. VIII . Of Slumbers and Dreams . I. How Sleep comes to be interrupted . SLumbers or reposes of Sleep are for the most part interrupted , and but seldom hold out continued . This hence proceeds , namely , because the Spirits being diversly agitated , and ●●nding the Vestigia of various impressions , direct their course through such pores , rather than others . For the Animal Spirits running through the Pleits of the Brain , render the series of them in a manner inflate , and according to their various agitation , either move them with one single motion , or skip from one to the other . Hence if it happen , that the Spirits , leaving one series of the Vestigia , skip first into one , then another , and so forward , various Imaginations must of necessity arise , which hang together by no connexion one with another ; and yet they are all of a Company , tho' with some small interruption . Whence ARISTOTLE compares such Impressions , as are formed by Sleep in the Brain , to Frogs made of Cork , which being stuft with Salt , are plunged into the Water , where as soon as the Salt is melted , they seem to struggle alternately , and without observing any Order , rise up to the surface of the Water . II. Whether there be any that never Dream . ARISTOTLE in his Book of Dreams , Chapter the last , makes mention of some who are look'd upon as Persons that never Dream'd ; such a one PLUTARCH mentions Cleon in his time to have been : And I my self was familiarly acquainted with a Doctor of Physick at London , who protested often times to me that he never had any apprehension of any thing in a Dream . Altho' such sort of Men never remember that they dream'd of any thing , yet nevertheless they cannot be said to have been totally free from Dreams , for the Soul never wholly ceaseth from Cogitation ; and whatsoever Body is laid asleep , that loses not its Essence which is constituted in Cogitation . So that because those sort of Men remember not that they had any Nocturnal Cogitations , it doth not therefore follow that they had none , since it many times happens to us not only to forget our Dreams , but even those thoughts which we had waking , altho' in the mean time we may be sufficiently assured that we saw in Imagination , or distinctly perceived something in our Dream : So Cleon , and those other Persons mentioned by Aristotle , were not free from Dreams , but forgetful of those things whose species were obliterated by reason of the quality of their temperament . III. How the Night More comes upon those that are asleep . Some in their Sleep fancy such a load or weight lying upon them , as if some Daemon lay heavy upon their Breast , and hindred the freeness of their Breathing . Hence this sort of suppression which the Latins call Incubus , is named by the Greeks , Ephi●ltes or Insultor , we call it in English , the Night Mare . The Cause of this Nocturnal Asthma proceeds from the Animal Spirits being denied their influx into the Nerves and Muscles designed for the Organs of Respiration ; for if in Sleep the Animal Spirits have not their free Influx into their Muscles , the like motion is induc'd ; whence the Soul in such an affection judges according to Custom , as if some weight were incumbent , and hindred the motion of the Diaphragma or Midriff . Add hereunto that those things which come into our Imagination , when asleep or in a Dream , more strongly affect the Brain than those which are conveyed into it by the Senses when awake . So while we indulge to Sleep , if Spittle abound in the Mouth , it follows that we seem to chew some certain Meats , and to mash them with much lteration , which never happens to us when we are awake . The same distemper may be caused when any thick Vapour fills the Womb , which by reason of its thickness cannot evaporate , but by an excited heat distends that part , whereupon the Diaphragma or Midriff is pressed , and therefore cannot be so commodiously drawn down , especially in the midst of Sleep , wherein by reason of the lesser influx of Animal Spirits it becomes less vehemently inflate , and is prest downward . IV. The Cause of unchast Dreams . So the Genital Humour growing turgid in the Spermatick Vessels , and agitating them with a certain irritation procures unchast Dreams ; so the more gross and undigestible sort of meats being taken at Supper , in regard they surcharge and lie heavy upon the Stomach , cause disturbances and frightful Phantasms in the Sleep . V. How it comes to pass that some rise out of their Bed , and walk in their Sleep . It is usual with some persons to rise out of Bed at Midnight , and have recourse to those places and do those actions , which awake they would not dare to venture on ; some hurry up and down , and without any help or assistance climb up Trees , and get up to House-tops . HORSTIUS makes mention of a certain Nobleman , who climbing up a High Tower , and ransaking the Birds-Neasts there , got down again by the help of a Rope . Physitians are of opinion that these things proceed from turgid Blood , and an Effervescence of the Spirits , which being carried into the seat of the Mind , agitate those Instruments of Motion , and impel them to perform those effects ; whence it comes to pass , that the Body by the impulse of the Animal Spirits is wrapp'd up in Imagination , and by vertue thereof is incited to such actions : But I am of opinion , that all these things would signifie nothing without the help of Imagination which in a manner alone performs and brings to pass all these difficult things . For Imagination is not only incited by External Objects , but also by those things which are represented in Sleep , whence being agitated by the reserved Species of things , it both excites extraordinary motions , and impels to the performance of those things which str●ke both admiration and astonishment into the Beholders . VI. An Example brought of Galen and others . It is reported of GALEN , that sometimes he walk'd almost a whole furlong in his Sleep ; and of a Servant of Pericles , that he used frequently in his Sleep to walk upon the House-top . Others make mention of a Schoolmaster , who , in his Sleep , not only was wont to teach his Scholars , but went one time armed to kill a Colleague of his by whom he had been sharply reproved , of which when he wak'd he remembred not any thing . Moreover , some persons of undoubted credit have delivered a relation of two Young Men , whereof one tho' wholly ignorant of the Art of Swimming , yet used to rise in his Sleep , repair to the water and Swim ; the other was also a Nightwalker , who one time above the rest , went down into his Masters Kitchin , and there in presence , and to the admiration of some of the Servants , not yet gone to Bed , spitted the Brooms like joints of Meat , and laid them to the Fire ; thus he bestirred himself , till at last waking , and being ashamed of what he had done he sneak'd away to Bed as fast as he could . And all these things proceeded from the helgtth of Imagination , and the persons deeply fixing their Minds , each of them upon the things they acted , whereby the passages through which the Animal Spirits , first entred , remained so wide and open , that the same Spirits at length insinuated themselves , and the Soul by their motion became affected in like manner . VII . Dreams are usually of those things which were thought on in the Day time . In Dreams the same imployments and actions run in our Minds , upon which we were intent and busied the day before . The Reason is , because the parts of the Brain , which have formerly been shatter'd by the acting of an Inferior Object , are more easily moved by the Animal Spirits , than those which have always remained quiet ; whence when the Vestigia of those things which we have first imagined , are discovered and remain after a sort laid open , the Spirits running slightly over them , bring back those Images of the Soul which it imprest upon it when awake . Wherefore unless the Body be indisposed and disturbed by noxious Humours , no other Cogitations can be offered to the Mind than those which possest it waking . VIII . How it happens that some in their Sleep let go their water . Some persons in their sleep emit their Urin , and as if they were standing against a Wall , or holding a Chamberpot in their hands make water . This never happens but when the Bladder swells with fulness , and is extended beyond its usual extension , because then the vellication of the Sphincter so opens the pores in the interiour superficies of the Ventricles of the Brain , that the Spirits running to and fro above the Glandule , take their course toward those Nerves which are inservient to the emitting of the Urin , and thereby procure such a motion , that not only the appetite of making water is produc'd , but also the Image of the Wall or Chamberpot is presented , which they that thus dream were wont to make use of upon this occasion . CHAP. IX . Of the External Passions . I. Sanguine Persons are chiefly prone to Laughter . MEN of a jolly Temper and sanguine Complexion , upon any the slightest occasion , burst forth into Laughter , nor are they , when any one else Laughs able to contain themselves , or when any matter of sport or merriment comes into their Mind . This sort of Passion in Men of this Constitution arises from the moveableness of the Fibres which are stirred up , and as it were frisk at the occurrence of any sportive Object , by which affection drawn through the Diaphragma or Midriff a certain change of the Countenance with a sonorous and inarticulate Voice is created . For herein consists the reason of Laughter ; that the Blood passing from the right Cavity of the Heart through the Vena Arteriosa suddenly , and with a repeated shaking , puffs up the Lungs , and causes the Air which they contain , to be compelled to break forth forcibly through the Aspera Arteria , in which it forms the Inarticulate and Sonorous Voice , and as well the Lungs by being inflate , as this Air by going out impel all the Muscles of the Diaphragma , Breast and Throat , by which means they mov● those Muscles of the Countenance that have any connexion with them . Wherefore no wonder if many times persons of great Sense and Ingenuity cannot contain themselves , tho' using their utmost means to repress the said Motions . II. Whence arises the Impulse of Animals to Venery . By the impulse of Nature it is that Animals are carried to Venery , or as it were forc'd by a certain violent inclination to a conjunction with their like , for the propagation of their Species . This Inclination of Animals hence arises , namely , because at their fit Age the Seed increast in the Vessels appropriate to Generation , and the reception of the said Seed upon some access of heat from the afflux of the Spirits , provokes Concupiscence , which in Males from the sight of the Female , and on the contrary in Females from the presence of the Male , by a vehement agitation of the Animal Spirits , impels Animals by a certain amorous rage to a Mutual Conjunction , with which they are inflamed , much after the same manner as a rapid Fire shut up in a close Fornace . III. Whence Sardonie Laughter proceeds . There sometimes happens to one a Laughter against his Will , even in excess of pain , or else at the point of death ; and such a kind of Laughter is called Canine or Sardonick . Old Women impute this sort of Laughter in Infants to a sign of Joy , when indeed it is nothing but a Convulsion of the Muscles of the Face , which is very often attended by Epileptick Fits. So likewise among Gladiators and such sort of Combatants it is a most certain sign of instant death ; forasmuch as it denotes that the Animal Spirits are no longer under the Government of the Mind , but in a tumultuary manner rush sometimes upon these , sometimes upon those Nerves , and so that the Link of the Mind with the Body is almost broken . IV. How it come to pass the Mens Hairs stand on end who are struck with horror . When any one is struck with horror , his Hair ( as it were ) stands on end . Because when the Blood , by reason of the said astonishment , withdraws to the Bowels , the external parts of the Body , especially the Skin , are contracted ; nor can it be but that by the contraction of the Skin , the pores also are comprest , and thereupon the Hairs start up . Because the pores of the Body are like Repositories in which the Hairs are disposed , which according to their different situation , obtains a various position . The same effect is stirred up in other Animals by the motion of some affection or other ; as for example , Anger in a Dog , fear in a Hen , whose Feathers rise up a main , if the Enemy be at hand ready to seize her . V. Some after a full Meal fetch deep Sighs . In some it is observed , that after Meat , from the fulness of their Stomach they fetch deep sighs , and draw their Breath from the very bottom of their Breast , like persons affected with some languishing distemper . This I judge proceeds from a motion which Nature makes use of , the sooner to transmit the juice of the Meats through the Heart , to the end the Stomach may the more speedily be relieved by them . For sighs by agitating the Lungs , cause the Blood which is contained therein to flow the more speedily through the Arteria Venosa into the left Ventricle of the Heart , and thus the new Blood created of the Meats juice flowing from the Stomach , the Lacteal Veins and Heart , as far as the Lungs may the more easily be admitted into it . VI. Why of sad Persons , some covet Meat , others refuse it . In some Persons affected with Sadness , the Appetite being quite taken away , all sorts of Meat become loathsom to them . On the other side , others languishing with sorrow , covet Meat with a more sharp and greedy propensity , The difference arises from the different original of these two sorts of sadness . The original of the first , which affects some from their very Birth , is from hence ▪ namely , because they took not in nourishment enough , but were kept short of such an allowance of Meat as might satisfie the appetite . Of the Second sort , that the nourishment they first took was grievous and hurtful to them , and thereupon the motion of the Spirits in them which takes away the desire of Meat , remain'd join'd with sadness . For such is the Conjunction of Body and Soul , that these very Cogitations which have accompanied any motions of the Body from the very first entrance into life , continue to accompany them . VII . Suddain Joy causes Swooning and Fainting away , and sometimes even to death . Some fall into swooning fits upon their being seised with excess of joy , as for example , that Woman mentioned by VALERIUS MAXIMUS , who at the sight of her Son , whom she thought to have been long since slain in Battel , fell immediately dead . I have heard of a certain Merchants Wife in England , whose Husband , taking a voyage into the East-Indies , was by some Friends reported to be dead , that when after three years she heard that he was returned , and even just at the very doors to enter , she running hastily to meet and embrace him , fell down dead on the Threshold at her Husbands Feet . The cause of this I judge to be , for that the said excessive , suddain and unwonted joy , by opening the orifices of the Heart ▪ forces the Blood of the Veins to enter with such violence ▪ and in such abundance into the Heart , that it could not be there dilated and rarefied soon enough to remove those valvules which close the Orifices of the said Veins , whereby it came to pass that the Fire in the Heart was suffocated , and the Life which consists in the motion thereof perisht . VIII . Why upon the Yawning of one Person , others also Yawn . It happens very often , that upon the yawning of one Person , the rest of the Company fall a yawning or gaping also . Oscitation or Yawning is nothing but the deduction or parting asunder of the lower Jaw from the upper , which diduction proceeds from some sharp particles there sticking and gently vellicating the Fibrils of the Nerves , whereby the Spirits have a more copious influx towards those Muscles of the Mouth , and so produce the said motion . But that upon one Persons Yawning , others should do the like , it proceeds from no other cause but this , namely , that the said diduction of the Jaws so disposes the Animal Spirits , that they rush towards that part , and so excite an Oscitation or Yawning together , much after the same manner as two Musical Chords or Strings , which being screw'd up and tun'd to the same note , so sympathise together , that when one being struck sends forth a sound , the other at the same time , though not struck , sends forth the same . IX . How it comes to pass that Persons excessively grieving , fall into a Swoon . A Lipothymie or Swooning away through failure of the Spirits , oftentimes proceeds from great grief . The original of a Lipothymie is when the Animal Spirits , be it for what cause it will , are carried impetuously through the Nerves to the Heart , and contract its Ventricles at that very time when they ought to be dilated by the Blood entring in ; whence it comes to pass , that the fermentation of the Blood is hindred , and consequently that the Blood within the very Ventricles of the Heart cannot be sufficiently rarefied , nor strongly enough thrust out into the great Arterie adjoining ; whence it is that this Lipothymie proceeds from great grief , in regard the whole contexture of the Nerves is thereby shattered , and consequently the Arteries themselves that receive the Ramules or little Branches of the Nerves are also shattered , whereupon the Blood contained in the Arteria Magna or Great Artery is forc'd upward towards the left Ventricle of the Heart , and thereby hinders the Blood contained therein from being able to pass . This is the true cause of the Lipothymie or Swooning Distemper . X. How it comes to pass that Persons affected with Sadness or Grief , are apt to shed Tears . Those that are sad and dejected of Mind , are very prone and apt to shed Tears , especially if the heaviness of Heart be not very excessive , and any sense of Love attends it . The Reason is , because tho' from all parts of the Body , Vapours exhale , yet there is no part which sends forth more than the two Eyes , both in respect of the magnitude of the Optick Nerves , as also the multitude of the little Veins through which the said Vapours tend thither . But , whereas sadness by cooling the Blood , contracts the passages of the Eyes , and keeps back the agitation of Vapours : Sadness alone is not sufficient to draw ▪ forth tears , unless there be also an accession of Love , which is an occasion of discharging the Blood towards the Heart , and of increasing the quantity of Vapours : Whence it is observable that the Sad do not shed tears continually , but only by Intervals , whilst the Object they love recurs to their Mind , and is represented anew to their Imagination . The Ancients have allowed this expression of Grief even to Brute Animals . Horses , saith PLINY , bewail the loss of their Masters , and weep for want of them ; and concerning the Horse of slain Pallas , Virgil thus writes . The War ▪ Horse Aethon , spurning now aside His Warlike Trappings , Ornaments of Pride , Weeps as he goes ; and for resentment sour , Down from his Cheeks the great drops trickling pour . XI . How it comes to pass that those who weep , not only shed Tears , but also send forth loud ▪ Shrieks and Out-crys . A loud Outcry is oftentimes adjoined to Weeping , especially in Children and Women , who , tho' they are both prone to Laughter , yet send forth louder and shriller Crys in Weeping than in Laughter . These Shrieks are produc'd when the Lungs are in a moment puft up by the abundance of Blood entring into them , which expels from thence the Air that filled them , which Air being transmitted through the Throat , produces those howlings and crys which accompany weeping . But because the Nerves that are inservient to the dilating or contracting the Organs of the voice to render the said Voice more acute or gracile , are joined with those , which in time of joy open the Orifices of the Heart , and in sadness contract them : Hence it comes to pass , that these Organs are at that time dilated or contracted . Hereupon in weeping the Brows are contracted and deprest , the contrary whereof we find in Laughter . XII . Why Lovers so often sigh . Lovers commonly fetch deep sighs , and as an argument of their solitude and grief , pant and draw their Breath thick from the bottom of their Breast . The Reason is , because in Love the Imagination of Hope or Joy opens the orifice of the Arteria Venosa , which Sadness had before contracted . Wherefore when that small quantity of Blood which remained in the Lungs , is in a moment conveyed through this Vena Arteriosa , into the left Cavity of the Heart , and is impelled thither , by a desire of obtaining that Joy , where at the same time all the Muscles of the Midriff and Breast are agitated ; it comes thence to pass , that the Air is very quickly impelled through the Mouth into the Lungs to possess that place which is forsaken by the said Blood. XIII . How it comes that the Sad have not always in their Countenance the same Colour The Sad carry not always the same Countenance ; for sometimes they look Pale , other times are of a Ruddy Colour . Sadness inclines to Paleness , when by contracting the Orifices of the Heart it causes the Blood to flow more slowly into the Veins , and as being made colder and thicker , to possess less place ; whereby it comes to pass , that betaking it self into the broader Veins , and those nearest the Heart only , it forsakes the remoter , whereof the most conspicuous are those in the Face : And by this means the Lover is rendred the more Pallid and Macilent . But when the Sad look Red , and discover a certain Ardour in their Countenance : It is not so much to be imputed to Sadness as to other Affections which are joined to this Passion , namely , Love or Desire , or possibly sometimes Hatred it self . Forasmuch as these Passions moving and heating the Blood which proceeds from the Liver , Entrails , and other interiour Parts , and impelling it first to the Heart , thence through the Aorta to the Veins of the Face , cause the said Face to look Red and High Colour'd . CHAP. X. Of some Persons Natural Inclinations and Aversions . I. How it comes to pass , that of two Gamesters we favour one more than the other . IF by chance we fall into the Company of two Gamesters equally unknown to us ; We by I know not what Instinct of Nature are apt to favour one more than another : And so likewise if we see two Persons playing at Tennis , we wish success to some one of them rather than the other . The Peripateticks impute the Cause of these Natural Inclinations and Aversions to that which they call Sympathy and Antipathy ; which obscure and insignificant Terms , serve only for one main end , namely , for a Cloak to cover our Ignorance under the umbrage of a few large striding and big swelling words . We therefore assert , that this Inclination whereby we favour one Party rather than another ; if this propension continues no longer than the Game lasts , proceeds from hence , viz. that our Will which flies all Indifference , and affects to be concerned about some or other Object , takes an occasion to join it self to some Party , altho' the Soul be induc'd by no apparent Reason , more to favour one than the other , or to wish success on any particular side , but only suffers it self to be drawn over towards that Dice-thrower , or Tennis-player , who at that time most swe●tly sooths ▪ his Brain according to the tenour of its disposition . But if this Affection survies the Game , and after the Match ended remains still fixed in his Heart , it proceeds from the Vestigia or tracts of the Inclinations , the original whereof I have shewn in my Institution of Philosophy , Part 9. Cap. 14. II. Why we should so favour , when nothing occurs that should impel us to it . But if we remember not the agreement or similitude which the Objects we love or reject at present , have with those which we f●rmerly had a love or aversion for , it is because the first Passions out of which the Second proceeded , were mightily confused , as being the very first Passions of our Infancy , or at least such as we no way ever considered with attention , and were of the number of those whose Object we loved or hated , without any trial or weighing of Reasons , or Animad version of what might be worthy in them of Love or Hatred . Wherefore the Second also are partakers of the same obscurity and confusion as the First ; and we are very often forc'd to say with the Poet , I love thee not Labidius , say no more ; I love thee not , but cannot tell wherefore . III. Whence it is that many have an aversion to Cheese . There is scarce a Country or Province , in which there are not many persons who have not an extraordinary aversion to Cheese , of whom some there are , who not only have a great abhorrence from the eating of it , but also cannot without much trouble and offence behold the sight of it . IV. Sir Kenelm Digby's Opinion . The Cause of this Aversion , Sir KENELM DIGBY judges to be , for that Children many times are suckled by Nurses with Child , and in whose Breasts consequently by reason of a new conception the Milk is curdled , which may possibly offend the weak Stomach of the Infant . For without doubt a very great alteration must needs be made in the Milk , by reason of the Nurses pregnancy ; and the Milk thus corrupted being suck'd in by the Infant , degenerates in his Stomach into a vitious curdle of Cheese grievously distasteful to the Child 's weak Stomach ; whereupon this aversation sticks upon it as a lasting brand during the Parties whole life . So a certain Lawyer in London , going to sup up a Rear Egg , and chancing unawares to swallow the Embrio of a Chicken , entertained from that time forth such an aversion for Eggs , that upon no occasion , nor by any perswasion of Physitians , could ever be brought to eat any more Eggs. This cause for nauseating of Cheese in many , I can well enough allow , but that all who suck coagulated Milk should for this cause only have this aversation I can never admit , when as we daily see a vast number of Women , especially of the common and meaner sort so fruitful , that they bring Children every year , whom they suckle at the time of their being with Child , and never wean them till they are near their time . So that if all the Children who have suck'd the Milk of Big-bellied Women , should be initiated in this aversion for Cheese , and increase it with their Age , how vast would their number be ? And in how short a time would Cheese grow cheap ? V. A more probable Opinion . Wherefore my Opinion is , that there may be another cause of this Aversion , either their Mothers Longing , or greedy desire of certain Meats , which when the● cannot be obtained , the Infants soon after born ▪ abhor and l●ath them , or else because Cheese , especially Old Cheese abounding with Volatile Salt , and many other putrid particles , might possibly raise such a confusion of particles in the Blood , that great inconveniences might thereupon arise , especially to Infants . What wonder therefore , that this effect should be continued in Adult or full grown Persons ? So far as that the very smell of Cheese cannot be indured by many . Nay , though it be fraudulently mixt with other Meats , and administred to the Party not knowing the cheat ; nevertheless it will either cause a violent Vomiting , or if that happen not , many inconveniences and disturbances will thence arise . VI. How it comes to pass that some are so impatiently affected with the stink of a Candle carelesly put out . A certain Nobleman of England , of my particular acquaintance , had so great an abhorrence of the fuming snuff of a Tallow Candle put out , that if by chance it hapned at any time through the negligence of the Servants to be carelesly blown out , and not covered with an Extinguisher , he was so disturbed with the smell thereof , that he became all of a sweat , and was discerned to tremble every Joint of him . This could not happen to him upon any other account , than because this Organ of Smelling was so attempered according to the insensible particles , that the more ●●●tile pa●ticles of the said Fumous Vapour begat in his Nose an ungrateful motion , that is to say , a most abominable smell , much in the same manner a● Smoak falling into the Eyes provokes to Tears , and pricks and vellicates the Tongue it self . VII . How it happens that some mightily abhor the sight of a Cat , or such like Animal . Some Persons can by no means indure the sight of certain Animals ; nay , are highly disturbed if they happen to be in the same place where they are , tho' not seen ; particularly some have such an aversion for the presence of a Cat , that at the sight thereof they fall into a Swoon . This may very well be , for that when they were yet Infants , and in their tender years , they were hurt by a Dog , Cat , or some other noxious and hostile Animal , tho' perhaps retaining no memory of the Wound inflicted , and consequently they may experiment in themselves , at the first sight of the Animal , the same commotions as well of Body as of Mind , with which heretofore they were affected , either upon the foresaid occasion , or else because their Mothers when they bore them in the Womb , were affrighted at the sight of the said Animals ; or lastly , because their temperament of Blood and Spirits is such , that the Evaporation continually exhaling from the Body of the Cat , and transmitted by respiration , coagulates , fixes , and after an unwonted manner exaggerates the Blood and Spirits with which it is intermixt . Whence no wonder they undergo so great a perturbation , and sometimes fall into a Swoon . If other Men have the fortune not to be taken with these Passions , it is because they are of a different temperament , and are not affected with the exhalement of the Cat , evaporated by the circumambient Air. VIII . How it come to pass that some abhor the smell of Roses . Upon the same ground we must suppose that OLIVER CARAFFA abhorred the smell of Roses , when ev●ry year in Rose time he was forced to withdraw from Rome , and live recluse among the Gardens in the Quirinal , Guards being set at his Gates to hinder any of his Friends and Visitants from carrying in a Rose with them . In like manner a certain English Lady , mentioned by Sir KENELM DIGBY had such an abhorrence to the smell of Roses , that when one of her acquaintance put a Rose upon her Knee when she was asleep , to try whether she had so great an Antipathy to that Flower as was reported ; there grew Pimples immediately upon the Place . IX . The Reason of this Aversion . The Original Cause hereof might be from a strong scent in the Mothers Womb , or in the Cradle , or haply some other place , tho' totally forgotten ; by which the temperament of the Brain hath been hurt , and the Mind affected with trouble and disturbance . And these or the like affections as well of the Body as of Mind , may easily be allowed , tho' a long time after , to survive , in the Parties , the Original Cause . To which we may add , that in regard the Fibres of the Sensory or Organ of Smelling are according to the diversity of Men , diversly configurated : It thence comes to pass , that things of any Odour or Smell , affect not all persons alike , since that some Obj●cts , as being indued with rough and pungent Effiuviums , are by some accounted sordid and odious , which very things to others that have notable strong and tough Fibres in that Sensory , are sweet and grateful . I know a great Lady that takes much delight in the smell of stinking Flesh , and admires the fuming Snuff of a Candle new put out . X. Of one who abhorred a Wasp . A Gentlewoman in Oxford hated a Wasp to that degree , that in the hot Summer Months , when Wasps fly frequently about in Houses , she used to keep her self close shut up in a Chamber , not daring to stir out into a Dining Room , or any such like large or open place , till such time as she had news from those that she durst give credit to , that this sort of Insect was destroyed , or at least was no longer seen . This Aversion probably hapned to her from some mischief or incommodity she had received from this kind of Animal : As they who having drunk for a Medicin some kind of bitter Potion , take such a distast from thence forward at it , that they will not indure to taste , nor even to behold , nay not so much as to look upon any thing that is like it . Likewise there goes a Report of a French Nobleman , who had such an Antipathy to Garlick , that he could not taste the least Crumb of it without Vomiting ; and after he had with good satisfaction made an end of a Mess of Broth , into which , for his sake , no Garlick was put , yet when one of the Company , to play the Wag with him , told him there was a little Garlick shred in it to give it a relish , he vomited up both the Broth , and all that he had eaten besides . XI . How it comes to pass that Men have various Natural ▪ Inclin●ti●ns . All Persons by Nature are incited 〈◊〉 certai● Passions , some to one , and some to another ; som● are prone to Anger , and fly into Rage upon every slight occasion ; others are 〈◊〉 a disposition that inclines them to Sadness ; 〈◊〉 are addicted to Joy , Fear and the like . The diversity of these Passions proceeds from the contexture of the Fibres , and the different habitude of the Humours . Forasmuch ●s Choler incites to Anger , Melancholy to Sadness ; Blood boundin g to Joy. In regard Choler vellicates the ●●●res , Melancholy compresses them ; Blood dilates them , 〈…〉 Which effects we find certain ▪ 〈…〉 Waking . Those 〈◊〉 whom Choler aboun●● , th●●k of nothing but Firebrands , Burnings , Fights and Br●wl● . The Sanguine mind Dancing , Musick , Laughter , Sport , and all that tend to Lasciviousness . The Phlegmatick Fancy watry Places , and overflowings of Rivers ; and soo of the rest accordi●g as they abound in Humours , or have their Spirits disturbed . ADVERTISEMENT . THERE are some things taken notice of in this HISTORY of NATURE , which probably may seem impossible to some ; But the Author Mr. LE GRAND is ready to justifie the same , as well from Authentick Authors , as from Natural Causes , to such as shall be dissatisfied therein . And the same being Printed in all the Latin Impressions , and so well received , there is little room left for any real Dispute . To the Honoured Sir Henry Hobart OF Blickling in Norfolk , Knight and Baronet . Sir , THE Authors Opinion in relation to BRUTE ANIMALS , as discoursed of in this ensuing Tract , being an Opinion not commonly received ; requires the Protection and Patronage of some Person , Eminent for his Learning , and one whose high Reputation may defend the Opinion against the cavelling Critick , and wrangling Disputant . For this Reason , Sir , 't is that I have selected You from amidst the number of those Ingenious Persons , I have the honour of knowing , as reasonably believing , You who are allowed by all that are so happy to be acquainted with You , to be excelling in the ingenious performance of Learning , may , by Your favouring that Opinion , if not totally recommend it as an uncontroverted Position , yet stamp it so , as to make it currant with the Ingenious : For which Kindness and Generosity I might blush , should I not gratefully make my acknowledgment ; assuring You that none would more willingly serve You to the height of his Power , than , Sir , Your most Humble and Devoted Servant , Richard Blome . To the Honourd Sr. Henry Hobart of Blickling in the County of Norfolk Knight and Baronet . This Plate with the Discours of the. want of senc e & Knowledg in Brute Anemalls , is most humbly Dedicated by Ric : Blome Lens . Inv. I. Kip Sculp THE THIRD PART . A DISSERTATION Of the want of SENSE AND KNOWLEDGE IN BRUTES . I. What it is that moves some Philosophers to believe that Beasts have knowledge . SO far hath the Opinion concerning the Knowledge of BRUTE ANIMALS prevailed amongst Men , and so infixt hath it been in their Minds , that they who dare think otherwise , and refuse to patronise a Cause which to them appears so clear , can hardly escape the censure of Folly and Temerity . In this Opinion almost all Philosophers agree , and whether induc'd by the industry and vivacity of Sense , which they observe some Beasts to be indued with , or fancying that they see some Idea's of Reason in them , they make no scruple to attribute Knowledge and Ratiocination to them , and pronounce them capable of those perceptions and apprehensions , which in reality distinguish human kind from all other Creatures , not being able to imagin ●ow without the help of Reason , BRUTE ANIMALS should bring such wonderful things to pass , and discover in their actings such a world of Ingenuity ; as for example , how BEES if void of Knowledge , should build so Geometrically their sexangular Cells , and fill them so exactly at their certain times with Hony. What , say they , can these Creatures Act so regularly , Consult so deliberately , make Choice so prudently of their Kings and Captains , and send out so seasonably their Scouts to watch and bring in a supply of Provisions , and not at the same time give an evident proof of a Rational Knowledge ; since in all these Performances they cannot be supposed to be carried on by a blind and unaccountable impulse of Nature . For what impulse of Nature or Corporeal Energy can be capable to inspire a meer living and moving Machine with Sense , and apprehension enough to constitute a King , obey his Commands , give him their presence , attendance and assistance upon all occasions ? How comes that band of Souldiers appointed for his Gard ? How comes it that one more than another performs this Satellitory Office ? Is it likely that by meer chance Serjeants and Officers should be chosen for his preservation , and sometimes to bear him up , when weary , upon their Shoulders ? If destitute of Reason , they are totally ignorant of what they do in all these performances : Yet let us further inquire how the Living of them should carry out their Dead , and after the manner of Mourners accompany their Exequies ? Certainly it must needs be very absurd , not to attribute to Reason so many plain signs and evidences of Reason , and after the discovery of such effects , not to find out the latent Cause . II. The Industry of Spiders , implies a supposal of Reason , latent in them . No less discoveries the SPIDERS make of their Industry and Ingenuity in the curious weaving of their Webs , and hanging them loose in Doors and open Passages , wherein is likewise observable the manner of their lying in wait for Flies : For why should they place their selves to lie upon the watch rather in the center than in the extremities of the Web , but that they are sensible of the equality of the Lines drawn from the Center ; and like skilful Fowlers understand that the Net is more easily drawn in that place . Moreover , if we well observe the ingenuity of certain other Animals , we shall find in them no weaker evidences of Ratiocination , than in those already mentioned . What providential care and forecast is to be seen in the GEESE of Cilicia , who conscious to themselves of their garrulous Nature when they pass the Mountain Taurus , for fear of the Eagles , take each a Pebble Stone in their Bills , by which means they are forc'd to silence , and do not give notice to the Enemy of their coming . Moreover , who can but admire the Industry and Art of the ANTS , who build their Cities with so much design and regularity , that the several Offices in them , may easily be discerned , some for holding their Assemblies , some for laying up their Provisions against the following year , and some for the burying t●e●r Dead . Aldrovandus was an Eye-witness of a City of a Quadrangular form , four foot broad , in which the Ants were seen to run to and fro through their several Paths in great diligence , as it were about their earnest affairs ▪ It● was exactly drawn in streight Lines and Angl●s , and the length thereof was just divided in the midst by a streight Path of a Fingers depth and breadth , through which ran three other ways directly , intersecting it at equal distance one from the other , and of the same depth and breadth . In the extream Angles of these ways , as it were at so many Streets ends , their Eggs were laid up together in heaps . In another part of the City were Granaries filled up with Grains of Wheat , so full that the Paths were strewed with the overplus , but else all the ways were kept very clean : Lastly , one only Gate there was at the end of the Cities length which looked toward the West . These and the like things reported of these Animals , do more than enough evince the Natural Knowledge they are endued with , and are sufficient to force a Confession from the most Refractory . III. The Souls of Brutes , as some of the Ancients are of Opinion , differ not from ours . By these Reasons the Ancients were induced to believe the Souls of Brutes were incorporeal , and no way differing from those by which the Bodies of Men are animated ; or if there were any difference between them , that it did not consist in the Essence , but was caused by certain accidents ; or by the several degrees of perfection . Hence that passage in GALEN about the beginning of his Exhortations : Whether those Animals , which are commonly called Brutes , be totally void of Reason , is not yet sufficiently made out to us ; for tho' perhaps they have not that Reason common with us , which is called Enuntiation or Vocal Expression , yet they have that Reason common with us which belongs to the Soul , that is , a Reason capable of Affections , tho' some more , some less . IV. And are also affirmed by them to be parts of the Universal Soul of the World. Very much inclinable to this Opinion were Plato and Pythagoras , by the Testimony of Laertius ; and Thales , by that of Plutarch ; and almost all those who gloried in the Learning and Authority of those great Philosophers : Forasmuch as supposing that there is one Universal Soul , by which Plants have their Vegetation , Brutes their Nourishment , and Men their Form and Understanding : They thence infer , that the Souls as well of Brutes as Men , are parts of this General Soul , and that they all arise and spring from the manifold division thereof . Upon the confidence of this Opinion , Thales took the boldness to aff●rm , that all things are full of Divinity ; consequently that there is no Body existent , which hath not its particular Daemon ; and so compriseth in it self something of Divine . B●inded also by this conceit , the Disciples of PLATO asserted that the Souls both of Men , and all other Creatures are equally mortal and void of all corruption : For since they are active and move themselves by their own proper Force , they cannot by any external Agent be urged to Rest , for that must of necessity perpetually exist which depends not upon another , and borrows not the permanency of its duration from any . V. This Opinion of theirs admitted , there will be no difference between Brutes and Men. But this Opinion hath long since grown out of d●te , ●nd is reckned by the Fathers among Plato's Childish Fictions , so that there is no necessity of encountring them with Arguments : Let it suffice to take notice what enormous absurdities must needs arise from the admitting of this Opinion , and what confusion in Nature would follow : For if the Souls of Beasts be eternal and invested with immortality , what distinction will there be between Men and other Animals ? Doth the same felicity attend them as us ? However , not to be over sollicitous about the beatitude of Beasts , let us at lea●● examine where those Souls are disposed , which have been existent from the beginning of the World ; what Places are allotted for them ? Whether they have any peculiar Elysian Fields assigned them to wander and exspatiate in ? What is become of all the Gnats and Flies with which the Aegyptians were heretofore disturbed ? What was their business after Death ? And to what end were they kept ? Or what advantage accrewed from their Death ; when it must be confest by all Men , that God governs all things by his wonderful Wisdom , and directs all Creatures to a certain end . All these things considered , it is most consentaneous to Reason , that the Souls of Brutes return to the Earth from whence they had their first beginning , and cease to live , when they cease to be among us . VI. The Order of things to be said in the First Part of this Dissertation But not to wander too far in the very entrance of this Discourse , let us come to the purpose , and examine whether Animals are indued with a Real Knowledge , or can judge or reason of things that are without them ; which that we may the more easily compass , it will be worth our while in the First Part of this Discourse to inquire , First , what the Soul is , and what sort of Soul is proper to Brute Animals . Next what Knowledge is , and wherein the formal Reason thereof consists . Lastly whether Beasts perceive , and what Principle guides them in all their Actions . VII . Aristotles definition of a Soul , vain and frivolous . To begin with that which in the first place was proposed , it will be of great consequence to know what the Soul is , and what is imported by that Vulgar Name ; for when Men first imposed Names upon things , before they well understood their Natures , and enquir'd into the Properties of each distinct one from the other , it followed of consequence , that the name of Soul was indifferently attributed to all Living Creatures ; and as well Plants and Trees , as Men , and all other Living Creatures were said to be indued with Souls . But in this affair no Man erred more than Aristotle ; forasmuch as going to define the Soul in general Terms , this cunning Philosopher took great care that he might not be carpt at by Posterity , and thereupon brought forth such a definition of a Soul as might be applied almost to all things , and so serve as a common Plaister for the healing of all Sores . For in his Second Book De Anima , going about to explain the Essence of the Soul , he defines it thus . A Perfection or Act of a Natural Organick Body , potentially endued with Life . But how wild a definition this is , may be hence collected , namely , for that Divines , Physitians , and others , do all make use of it alike , and in so doing , appropriate it to things of a quite different Nature . For Theologists and Interpreters of Holy Writ assert , that the Soul of Brutes is the Blood or Spirit exhaling from the Blood. To make this good , Aristotle is presently at hand , and suggests that the Blood is the Act of a Natural Organick Body , having Life potentially . The Physitians are pleased to make the Soul a temperament of the Body , and a harmony of the Humours which abound therein . This according to Aristotle must be that Act of an Organick Body which hath Life potentially in it . Antient Philosophers maintain that the Air is the Soul , taken in at the Mouth , cooled in the Lungs , and diffused into the Body ; this comes up in conclusion with Aristotles definition of a Soul , since he also defines Air to be the perfection of a Natural Body , potentially indued with Life . Others suppose the Soul to consist in heat , or at least that it is a subtile Spirit , which gives sense and motion to the Body ; this Aristotle doth not wholly gainsay , yet withall obstinately maintains that this sort of heat or Spirit is nothing else but the Act of a Natural Organick Body , having Life potentially in it , so that whatsoever shall be alledged , or fancied concerning the Soul , tho' never so obscure , must be comprehended under this definition , and will challenge to it self both the Genus and Difference . VIII . Nay obscure , and explaining nothing distinctly . But tho' this definition did not dilate it self so far , and were only confined to certain things , yet were it not fit to be retained among Philosophers ; for what is there in it , that ought not to be rejected , it containing in it no absolute attribute which can any way explicate the essence of a Soul ; nor do things only respectively and generally predicated , and which may be mixt , and as it were link'd with other things , produce any more than a confused Knowledge . Besides , what is there distinct , that can be made intelligible to us by the word Act , no more indeed than if any one should define Light to be the Act of a Lucid Body , or Heat the Act of a Calid Body ; which definitions are so far from rendring us any whit more wise than before , that they serve only to involve us in an inextricable Labyrinth , and by a strange ambages of words render that obscure which was far more clear of it self . In so much that HERMOLAUS BARBARUS , a Learned Man , and for his great Wit and Parts very eminent among those of his Profession , when he had ambitiously sought , and at length obtained a Meeting with a Daemon , is said to have requested of him no greater matter than to be resolved in the signification of the word Actus , in the foresaid definition of Aristotle , that so he might approve himself a worthy Disciple of so great a Philosopher . These things I have the rather added to make it appear what obscurity the Notion of Soul would incur , by being divided into Vegetative , Sensitive and Rational ; and how little of Light is to be gained from those who make a vast confusion , by comprehending under one and the same distinction , things very different and remote in their own Nature . IX . There are only two sorts of things , Material and Spiritual . To proceed therefore more accurately as to the Souls of Beasts , and to the Knowledge they are indued with ; we are to suppose from the Institution of Philosophy , that there are in Nature only two sorts of things ; one Intellectual or Thinking , the other Material or Corporeal . Under the first are comprehended MINDS and SPIRITS ; under the latter all BODIES , which are vulgarly named Natural . Nothing can gainsay , but that Man is partaker of both Natures , and possesseth at once both Cogitation and Extension : Forasmuch as Man is not a thing simple and of one kind , but composite , and as it were a Medium , including both extremes ; so that it is evident that Brute Animals are of a different Nature from Man , and no way indued with Mind or Spirit ; forasmuch as all things which Beasts contain , are to be referred to a Material Principle , and have nothing of affinity with Men , except what refers to Body . We must therefore inquire what Principle it is in Beasts , by which they are not only Nourish'd , Grow , Breathe , are Moved , &c. but also by which they operate and perform those wonderful things in which they seem not only to come near the Wit and Subtilty of Men , but even to exceed them . X. Gassendus his Opinion of the Nature of the Soul of Brutes . GASSENDUS an eminent Philosopher amongst the Moderns , and so much the more praise-worthy , for that he hath refined and given new light to the Opinions of the Antients , imagins the Sensitive Soul of Brutes , ( and a more than Sensitive Soul no Man that I know will allow them ) to be a sort of Flame or Species of most subtile Fire which infuses Life into the Animal , and actuates and performs all its parts ; so that the Animal lives so long as this little Flame continues in vigor , and dies when it is extinguished . For tho' this Fire be a Body , yet in respect of its subtilty , it may be reckoned immaterial , if compared to the rest of the Corporeal Mass , and may justly for that Reason obtain the name of Anima or Soul ; and the Animal thereupon be rightly said to consist of Body and Soul. Wherefore if the Essence of a Brute consists in this , that its parts are subtile and continuous , and are agitated by a quick motion , and there be also a continual succession of some parts into the room of others destroyed ; in like manner the Fire or Flame wherewith Beasts are animated , is a Congeries and contexture of most subtile Atoms , which are stirred up by a quick motion , and by a continual generation of some , and departure of others , always preserve and maintain the same Essence : For into what other principle is the heat of the Body to be referred but to the Internal Fire ? Whence comes its motion ? How shall the Organs of the Senses receive the impressions of Objects , unless they be cherish'd by heat ? And whence that heat , but from the Soul , which performs and executes all the functions of the said Animal ; for tho' it may well enough be said that the Soul may rather be kept from heat , than heat from the Soul ; yet it is manifest that heat depends upon motion , and is not existent in the Body , but for that action of an internal Principle ; so that it m●st necessarily come to this , that there is a Material Anima , as GASSENDUS expresses it , to produce heat , give motion to the Members , and perform other Acts of the Animal . XI . That the Soul of Brutes is a Pure Fire , according to Honoratus Fabri . Not much differing in Opinion is Honoratus Fabri in his ▪ Second Book de Homine , where he concludes , That the Soul of Brutes is indeed a Fire , but pure and free from the mixture of other Elements ; to the asserting whereof he is chiefly induc'd , because Fire vegetates ; and there is most virtue ( as experience tells us ) where there is most heat , and where that stronger Element prevails . For whereas in other simple Bodies there is no footstep of action to be discerned , and Fire only is powerful by its productive virtue , Reason evinceth , saith Fabri , That if any Element be armed with the force of Sense , it must be allowed rather to Fire , than to any of the rest : Not that Fire absolutely taken is invested with such a power as to supply the place of a Sensitive Soul , but so far as it is constituted in such a frame of the Organ , such a disposition of Parts , such a Conduct , Communion and Texture of the Fibres . XII . Cartesius his Opinion that the Soul of Brutes is the Blood. The most Illustrious CARTESIUS , who hath refined Philosophy , and purged it from all its folly and obscurity , and teacheth nothing but what is highly consonant to Reason , supposes the Souls of Brutes to be nothing else but the Blood , and and that there is no occasion of a Sensitive Soul for the performance of their operations , and the production of the faculty of moving , and being sensible ; for this most Sagacious Person , when he considered the Blood to be a fluid Body , and that the more subtile part thereof is carried by a continual circuit from the Arteries into the Brain , thence into the Nerves and Muscles , doubted not to assert that the Blood heated in the Heart , and attenuated into Spirit , constitutes the Soul of Brutes ; and that from its motion alone , their various motions do proceed . This Opinion several places of Holy Writ seem to favour , and vindicate from the pertinacie of certain Detractors , who will needs take upon them , that it paves a way to Atheists , and gives them incouragement to think the same of Men , and consequently to divorce the Rational Soul from the Human Body ; when as indeed so great is the distinction between the Souls of Men and other Animals , and so great the difference between the operations of the one and the other , that it can hardly be doubted , even by the most stupid of all Mankind , but that they arise from different Principles . XIII . The Life of Animals consists in the continual motion of the Blood. Be it granted then , that the Life of Animals consists in the incessant motion of the Blood , which beginning its course from the right Ventricle of the Heart , passes through the Vena Arteriosa into the Lungs , whence flowing into the left Ventricle of the Heart , it passeth into the Aorta or great Artery , whose Branches are dispers'd through the whole Body , and being joined to the Branches of the Vena Cava , convey the same Blood again into right side of the Heart ; so that the Blood again into right side of the Heart ; so that the Blood heated in the Heart , and converted into Spirits , obtains the name of Vegetative and Sensitive Soul in Animals , and is the immediate and principal Organ of all Actions , as may be apparently discovered in certain Animals ; for examples , in Flies , Serpents , Scorpions , Frogs , &c. , which through the extremity of cold in the Winter , lie void of sense and motion ; and for the time in all appearance , totally deprived of Life , that is , while the Blood ceases to be in agitation , and the generation of Spirits is for the present stopt ; which Animals , when the Genial Spring , as Mantuan expresseth it , gives new pri mordia to things , the motion of the Blood being renewed by heat , are again raised to Life , and resume their long intermitted functions . The same thing may be seen in Men who are hanged or drowned , forasmuch as in a very short time they expire , by reason that the Blood stagnates for want of respiration , there being no passages open from the right Ventricle of the Heart into the left . The Blood therefore must needs be the principal part of Animals , from whence the native Heat and Spirits flow , and from which to those that are born , Life first begins , and to those that Die , last ends . XIV . How it ought to be understood that Beasts have no Soul. Altho' in explaining the functions of Beasts , we make no mention of their Soul ; yet at the same time we deny them not Life nor Sentiment , provided always that by Life and Sentiment of Animals , no other thing is to be understood , but the heat of their Blood , and the particular motions of their Organs of Sense which depend thereupon : Nor is this more unreasonable , than to attribute to Beasts a Soul , which should be really distinct from the Body , and which nevertheless cannot subsist without the Body , it being the same thing as to say , that the Soul of a Beast is at one and the same time a Substance and a Mode ; a Substance by supposition , and a Mode as having need of a subject for its existence . XV. What Cognition is , and wherein its Nature consisteth . Now it being made out , that the Blood overflowing the whole Body , and having by iterated turns a continual orbicular rotation to the Heart , from whence it had its first source , is the real Soul of Brutes , we must pass on to the Second Foundation , as it may be called , namely , what we are to apprehend by that which is commonly called their Cognition or Knowledge , what it is that constitutes their Ingenuity , and into what species chiefly it is to be distributed . The Idea of Cognition is so manifest , that there is scarce any thing which occurs to our Mind , which is more certainly known ; and if by chance any persons in the explaining thereof have erred , I conceive the occasion thereof hath been , for that they have by their crabbed Terms , rendred that obscure , which of it self was sufficiently plain ; and were minded , as they say , to hold a Torch to the Sun : For in this very thing , I find that all Philosophers have very oftentimes made great mistakes , namely , in indeavouring by Logical Definitions to explicate the most ordinary and simple matters , tho' in their own Nature intelligible ; and by certain circumlocutions of words to go about to render those things perspicuous , which voluntarily offer themselves to our understanding ; for what Object can present it self more clearly to us than Cognition , when as , if I perceive any thing , I seem to have its Image or Idea before me , and to behold it as it were present , with the Eyes of my Mind . For tho' perchance I be doubtful of all things existing in Nature , and may call in question what I touch with my Hands , see with my Eyes , hear with my Ears , smell with my Nose , or taste with my Tongue ; yet all this I cannot choose but think , and my very dubitation is a certain thinking , which I cannot but be sensible of . XVI . Every Cognition includes a Consciousness . Wherefore by the name of Cognition we are to understand all that which so proceeds from us , that we are immediately conscious to our selves thereof . So that to think or know , is nothing else but to have a perception of those things which are in us . But to make the matter more plain by an Example , How doth any one know that he is indued with a faculty of Understanding , Willing , Affirming or Denying ? but because he experiments in himself this sort of Faculty , and is conscious to himself of such a power so long as he exerciseth it . But this is not to be understood of Reflex Cognition only , that is to say , by which any one perceives or observes that he hath observed any thing , but also of any primary Perception or Intellection whatsoever , by which he gives attention to any thing . Whence it follows , that if one have not a consciousness to himself of those things which he acts or suffers , he experiments in himself no knowledge of them , and thereupon may be said to be destitute of Sense and Cognition , properly so called : For how can the Sense of Action or Passion be attributed to him , if he knows not that he Acts or Suffers ? Hence it comes to pass , that if Men attentively fix'd upon any thing are so taken up in contemplation , that they perceive not a Torch lighted before their Eyes , they cannot indeed be said to have any sense or perception of those things . And therefore that they may be said to be sensible , to perceive , judge , affirm , deny , &c. they must needs be knowing of those things which they are sensible of , perceive , judge , &c. XVII . Cognition is divided into four Kinds . All Cogitations which include Consciousness , are most especially two fold , Actions and Passions . All species of Perceptions or Cognitions , which are found in us , or which proceed from the power we have of perceiving or knowing , are called Passions ; and all such Operations are divided into four kinds , the first is Intellect , by which the Mind without the help of any Corporeal Species perceives all manner of Objects , as well immaterial as material : The second is Sense , as well that which is external , as internal : The third is Imagination , containing under it common Sense ; forasmuch as they are both actuated by the same Organ , and are imployed about the same Objects : The fourth is Memory or Reminiscence , being that faculty by which we deprehend that we had formerly the same Cogitation . Those Cogitations which are called Actions , are all our Wills , because we find them to proceed directly from our Soul , of which alone they seem to depend ; and to these are to be referred all our Judgments , Inclinations , Appetites , and all the Motions of our Will , which always accompany the power of our Willing and determining . XVIII . How Corporeal Matter differs from Immaterial and Incorporeal . These things being thus explained , as far as the brevity of our Subject would permit , and premised as the foundation of our Discourse ; We come now to examin whether the Cognition above-mentioned and defined be to be attributed to Brute Animals , or to speak in more express Terms , whether Beasts perceive , are sensible , imagin , remember , &c. and whether they imitate Men in these Operations , so far as to carry in them any semblance of Reason ; which to make out the more clearly , we are to call to mind , that the Nature of Corporeal Matter consists precisely in this , that it contains Longitude , Latitude and Profundity , or that it is a Matter Extensive ; for to consist of these three dimensions , is no other thing than to be extended , and to be extended is no other than to be capable of those three proprieties : To Body or Matter the Spiritual Part is diametrically opposite , whose Nature consists in Cogitation , and which admits of no dimension , either Longitude , Latitude or Profundity ; for all that is known to be in a Spiritual Essence is , that it is a thinking thing , that is , Perceiving , Affirming , Denying , Willing , Nilling , &c. All which are understood without any Idea of Extension , and have no affinity with Divisibility , Figure , Situation , or any other Affections of the Body ; and thence we must conclude , that Cogitation is an Attribute of a Substance containing no Extension ; and on the contrary that Extension is an Attribute of a Substance admitting of no Cogitation : For those two Idea's are utterly different , and represent to our Mind nothing that is any way alike . What conduces more to the evidence of one thing being distinguish'd from another , than that one may be conceived without the other ? For if we rightly infer that those Bodies which are not square , may be of Sphaerical Figure , and that those which are least capable of motion , are square , since Imagination can soon distinguish quadrature from rotundity , and ascertain that it is the nature of a square Body , to be least apt for motion ; may not the same Reason serve to conclude , that there may be certain Substances void of Extension , because the Idea which we form to our selves of Extension , differs from the notion of Cogitation ? Forasmuch as to establish a difference beween two things , it sufficeth that one may be distinctly perceived without the other . XIX . Whatsoever the Soul of Brutes is fancied to be , it is void of Cognition . From this Principle then being granted , it is most clearly to be inferred , that Brute Animals are not only incapable of Cogitation , but are also void of every simple Perception : For whatsoever sort of Soul may be fancied to be in them , whether Blood circumfused through the whole Body , as the Noble CARTESIUS maintains , or a pure Fire or Flame , as FABRI and GASSENDUS will have it ; giving Life and Spirit to all the parts thereof ; we must of necessity admit that this sort of Soul is Corporeal , and contains not any thing alien from the nature of matter ; forasmuch as tho' Blood rarified in the Heart , should evaporate into Animal Spirits , which like a most subtile Wind , ascend up into the Brain , and are conveyed through the Nerves into the Muscles ; and tho' this Flammula be composed of the most subtile parts , and emerging as it were out of the grosser Mass , may seem to emulate the agility , as I may so say , of Spiritual Things , yet nevertheless it doth not for all this cease to be material ; nor do those accidental qualities advance it above the condition of a Body : So that if Cogitation be denied to Matter , and a thing extended be not in a capacity to be conscious of that which happens to it , that very thing will be against materiality , tho' never so subtile , and diffusing it self through any whole Body : For the tenuity of Parts takes not away the Being of the Matter ; and whatsoever is capable of being extended , that Capacity is sufficient to give it the name of Matter , and to invest it with , and make it partaker of its imbecility : Who can say that that subtile Matter which enters the Pores of Gold , Adamant , Steel , or whatsoever other solid Body , is of a nature different from Body ? Accidents change not the Essence of things , and the subject must of necessity remain always the same as to Essential Proprieties , let it be changed never so much , or undergo never so many new Denominations . XX. Body is incapable of Cognition . What is it that can conduce to the making up of a Body ? All that we conceive of it , is that it may be touch'd , remov'd , and have its Figure alter'd , and that it may upon occasion take in , and give back heat ; that it is dry or moist , that it gives a sound when it is struck , or else deads the sound , that it may increase or be diminish'd divers ways ; and thus you have all that can happen to a Body : But what signifies all this to Perception and Cognition ? Certainly to be Touch'd , remov'd , Chang'd in Figure or Shape , or be heated is quite another thing , from to perceive . Take a piece of Wax , give it what Figure or Posture you please , or let what Impression you think fit be made upon it by the most excellent Engraver in the World ; turn it which way you please , shake it , move it up and down with never so much violence , put it into all forms or postures Imaginable , be sure the Wax will never complain of any of these ill treatments , or give the least thanks for any of the fine Figures imprest upon it ; since all this is done without the least Cognition thereof in the matter so handled . XXI . Nothing of Body can have perception . All this that hath been said of the Wax , is also to be said of any other sort of Body imaginable : For any one may very well think that Wax cannot perceive all these mutations , in regard it is not animated ; but that if it had a Soul like to that of Animals , then surely this Soul would without any difficulty perceive whatever could happen in the body of the Wax ; but all this comes not up to the purpose : For if this Soul of the Wax or of Animals were a Spiritual Substance like ours , I conceive it would have the faculty of knowing and perceiving the motions of any other Body near it , or intirely present : But if the Soul of the Wax , like that of Beasts , be a Corporal Substance , that is to say , be Body it self , one may say of that as of the Wax , that it may be moulded into divers shapes , that it may receive a world of Figures , that it may be capable of cold and heat , and such like qualities ; but that all this together will not be sufficient to cause it to perceive . XXII . Whether Matter be the Cause of its own Motion . Now let us go a little back , and fetch our Argument more from the Root of the Business , and shew that Matter or Body is not only not capable of Perception , but also not so much as of producing its own motion ; for as we have demonstrated in our General Physicks , GOD is the Primary and total Cause of all motion in the World , and consequently a Body cannot give it self any motion whatever . XXIII . Matter is passive and incapable of all Action . I am not ignorant that some Philosophers will oppose this Argument , and not suffer Matter to be so undervalued , as to be reputed altogether sluggish , and totally alien from all Action ; how can it concur , say they , to the constituting of a Compound Body , if it be meerly passive , and have no other motion , but from without ? Do not we see the Atoms in our Sublunary Region to be moved , and spontaneously carried to and fro ? Whence proceeds this impulse ? What is the cause of this continual agitation ? What but a certain inbred Power of matter , by which it determinates it self to motion , and according as occasion requires , agitates and winds it self ? Who can deny but that the Heavy Bodies descend of their own accord ? That a Bent Bow , when the obstacle is removed , springs back , and returns to its pristin State ? But what invisible Agent is it that here interposeth , and comes to restore a bent Stick to its former place ? If therefore Matter be capable of action , and hath in it self a power of agitating , and moving to and fro ; what should hinder but that it may obtain a power of perceiving , and by a certain impression of the Great Creator , being furnish'd with certain Organs fitted for that purpose , may think , apprehend , imagin , remember and exercise all other functions of an Intelligent Nature ? XXIV . Matter is only Potential , not Action . I am sufficiently assured that I have comprehended in brief whatever can be alledged against the inactivity of Matter : So that I have nothing more to do but to invalidate these Reasons , and to make good that Matter is only an Unactive Mass , and no less uncapable of Motion than of Cognition . All Philosophers that know any thing of the Nature of Matter , know that it is only potential , and that it differs chiefly in this from an Intellectual Thing , namely , that this last is Actual , the other Potential only , that is to say , if the thing be well understood , that it is only a dead sluggish Lump , and void of all Activity . For this is the difference between a thinking and an extended Substance , namely , that Cogitation is always present to the mind ; whereas Motion is never contingent but to a Body , and that while it is impelled by an External Agent , and borrows the power of moving another Body . XXV . Aristotle's Authority to prove that Matter is slothful . But because Aristotle's authority hath been always held in high esteem , and all things that have been quoted or excepted from his Writings , lookt upon as Oracle ; it will not a little conduce to the establishing of our assertion to declare the said Philosophers Opinion in this matter : And first in his Book of Generation and Corruption , he acknowledges the Matter is bare of it self , and only passive , unless some External Agent intervenes which actuates it , and from which taking impression it cannot be hindred from both moving it self , and exciting to motion some other Body : Also moreover in the same Book he affirms , in several places , that to suffer , and to be moved , are proper to Matter ; but that to move and to actuate are from a power without : Also in the Third Chapter of his First Book of Metaphysicks , where he more exactly inquires into the Original Cause of Motion , he sharply reproves the Antients , for that in their Physicks they considered Matter only , neglecting at the same time the Primary Principle of Motion ; and in his Meteorologies , explaining his Opinion more clearly , he affirms that neither Form nor Motion do belong to Matter ; but only so far as they are imprest from without . Nor will it suffice to answer , that Aristotle spoke here only of Matter in common ; forasmuch as he absolutely makes his Discourse of Particular Bodies indued with a certain Figure , which generally in Physicks are called Bodies Natural ; and in express words and terms labours to demonstrate , that no Natural Body hath a motion from it self , and that Animals themselves which seem to be spontaneously moved , are indeed moved with an external Agent : For when in the Second Chapter of his Eighth Book of Physicks , he makes to himself this Vulgar Objection , that an Animal at first lying still and motionless , afterwards visibly appears to move and walk , without any appearance of any external Movent : The said Philosopher presently replies , that this is false ; for we see , saith he , something of those things which are innate to the Animal , to be always in motion , but that of this motion not the Animal it self is the Cause , but most probably the circumambient Air. XXVI . An Explication how Atoms in the Air are moved , and how a bent Bow springs back . From which places it evidently appears that ARISTOTLE thought Matter to be a Principle purely Passive , that it was from an External Cause , both that it was moved it self , and that it had power of moving any other Body ; notwithstanding what is alledged of Atoms flying about in the Air , and of the Action they manifest by passing from one place to another : Forasmuch as the said motion is not to be imputed to the Atoms themselves , but to a certain Subtile Matter , which in our Institution of Philosophy we have made mention of , as being in continual motion , and entring and piercing into the pores of all Bodies ; and since it is not to be doubted but that a vast quantity of this Subtile Matter is contain'd and dispers'd throughout in the Air , no wonder if such small and slender Bodies as Atoms , proceeding from neighbouring Bodies , are agitated up and down according to the various motions of the said Subtile Matter . By the same Reason is the experiment of the Bended Bow to be resolved , in regard that Elastick Force by which a Bow flies back to its former state , is not to be referr'd to the very matter of the Bow , but to the Aether , that subtilest of Bodies , which entring through the more open Pores of the superficies , and finding them streighter and streighter as they are more and more inward , forcibly urges its way , and makes a kind of an attempt to loosen those streightned pores , by a drawing together of the extremities , so to make its passage the freer . XXVII . The Subtile Matter borrows the force of its activity from the first Mover . Now if it be demanded , upon what account then do we deny motion to Matter , if this most subtile Aether we speak of , be not only moved it self , but also have a power of moving , penetrating and impelling other Bodies ? Hold a little , good Inquirer , and take notice , we do not allow this most Subtile Matter to be the Principle of its own motion , but the first Mover , namely GOD , who from the first instant of Created Matter imparted a various motion to its parts : And by the same Action by which he conserves Matter , retains in the World altogether the same quantity of impressed motion , and preserves it intire . XXVIII . There is no intrinsecal gravity in Bodies . No more can the activity of Matter be any better defended by the objected gravity of Bodies , since it is an absurd thing to imagin that there is inbred gravity in Terrestrial Bodies , by which they are carried downward to the Earth , or have an inclination to be so carried ; for thus to imagin what is it else , but to impute Intellect or Understanding , to things meerly passive , and to attribute to them the Actions of the Will ? For in truth , there is nothing else to be understood by Gravity , but that the Subtile Matter interposed between us and the Orb of the Moon , and by a most swift motion roll'd about the Mass of the Earth , drives all Bodies towards the Center , and denies them any abode in the Higher Regions ; so that could the force of this most fluid Liquor be taken away or removed ; no Body would be heavy , and a Stone placed in the middle of the Air , would hang there and remain in that suspended posture , and never slide downward , unless that subtile Agent were at hand to drive it down towards the Earth : No Body therefore is mov'd by it self , but must be said rather to Suffer than to Act , till such time as it is forced to remove from place to place . XXIX . Parts in Matter ▪ whether Homogeneous or Heterogeneous , cannot move themselves . This also will appear more plainly , if we consider the parts of which a Material Substance consists ; whether they be Homogeneous or Heterogeneous : For if they be supposed to be Homogeneous , and to be all moved immediately by themselves ; in all probability they could never rest , or be so compact one with another , as to keep together , and compose those Bodies which daily appear to our Eyes ; because whereas such a motion is innate to the parts of Matter , and must necessarily flow from them , they could not possibly coalesce , but would remain distinct from each other , and refuse all consistence : Otherwise if they were able to abstain from that motion , and at their pleasure compose themselves to rest , what could we do less than set them free , and acknowledge that things inanimate are indued with Counsel and Deliberation ? But if the parts of which this Material Substance is compil'd , be Heterogeneous , and some of them be active , as GASSENDUS thinks possible , and others stiff and void of all capacity of moving , no less confusion would arise in the World from this position of Parts , than if all Parts were indued with the capacity of moving , in regard that when those which are invested with this Power , cannot but impel their neighbouring Parts , and those so impelled cannot lay aside their borrowed motion , unless by imparting it to other contiguous and less agitated ; nor these last lose any thing of their celerity , since it is inbred in them and unchangeable ; it follows that the whole Frame and Machin of the World would be immediately shattered , not the last particle thereof ceasing from motion ; whence the Famous Dr. MORE in his Exchiridion Metaphysicum , altho' he generally makes it his business to oppose the Doctrin of DESCARTES , yet in this Foundation of Physicks , he is forc'd to subscribe to his Opinion , whilst he thus defines a Body in general , a Body , saith he , is a Material Substance altogether of it self destitute of Life and all manner of Motion : Or thus , Body is a Material Substance incorporated into one by an External Power , and by the same manner participating Life and Motion ; by which words this most Eminent Person gives to understand , that Matter of it self is altogether a Slug and void of Action . XXX . As Matter is void of Motion , so its uncapable of Perception . It having been thus demonstrated , that Corporeal Things are not indued with any moving Power , and consequently that their motion must proceed from elsewhere : It will be no difficult matter now to evince that they are also destitute of Cognition , and can by no manner of Right aspire to any kind of Thought or Imagination . For what affinity can Extension have with Perception ? What acquaintance can there be between Mind and Body , except that both are equally subjected to the same Genus or Kind , namely , Substance , and each of them equally called Ens per Se ? But it is sufficiently known among Logicians , that the Species of any Supream Genus do not agree , except in the Essential Attributes of the same kind , otherwise they would not deserve to be called the Principal Species thereof ; and that highest Genus would more properly be called an Interjected Genus , dividing those Species from another Superiour Genus . But Substance is the Supreme Genus , and its immediate Species are Body and Spirit , so that they cannot agree except in the Essential Attributes of Substance ▪ such as are Ens per Se , &c. But of the number of these , neither Perception nor Extension are to be reckoned , since there are some Substances which perceive not , and others which are not extended ; so that Cogitation and Extension belong not to Substance in general . Now to proceed a little further ; That which appears only in Essential Attributes , ought to be differenc'd from all others ; but Mind and Body agree not , except in Essential Attributes ; therefore Mind and Body differ from all the rest , and are opposed to them in those things which have not an ingress into the Nature of Substance : For it implies a contradiction , that two things should be united in that very particular wherein they differ and contract an association by that wherein their opposition formally consists . XXXI . Cogitation cannot belong to Extension , neither as an Essential Part , nor as a Propriety or Mode . To this Ratiocination no small light will accrew , if it be demonstrated that Cogitation can by no means consist with Extension , and that in this manner : If Percep●ion may be attributed to Extension , it belongs to it as a thing constituting its Essence ; or as a Propriety which accompanies its Essence ; or , lastly , as a Mode or Accident which denominates it : Cogitation cannot as an Essential Attribute , agree to Body , for then it would follow , that all Bodies are indued with Cogitation , and consequently that not only Brutes , but also Trees , Stones , Stocks , &c. are indued with Cognition . Not as a Propriety of Essence , in regard since Propriety is applicative , omni , soli , & semper , to every of the kind , to that kind alone , and always : It would thence follow that the perceptive faculty would belong to every material thing , and there would be no sort of Body , tho' never so contemptible , to which Cogitation might not be attributed . Lastly , Not as a Mode affecting the Substance , in regard such is the nature of Mode , that tho' a Subject may be understood without its Mode , yet on the contrary , Mode cannot without its Subject ; but we can clearly and distinctly apprehend Cogitation , at the same time secluding all Corporeal Substance , nay denying that there is any such thing in Rerum Natura . So that Cogitation cannot , as a Mode , be attributed to Matter , and consequently Cogitation is utterly a stranger to Material Substance . XXXII . Regius his Argument against the Premises . Some there be , who perhaps adhering to the Opinion of HENRICUS REGIUS will maintain that what we have said is only true , so long as no Existence yet appears ; but nothing less if it be supposed to be in Rerum Natura ; for then what should hinder but that it may be modified by Cogitation , and gain a new denomination by the presence thereof ? For altho' perchance one should know for certain , that he carries about him in his Purse the Effigies of Caesar , but knows not whether the Graving be in Gold , Silver , or other Metal , he may safely affirm that he hath Caesars Image , tho' no representation of Gold or other Metal occur to him at the same time . Nay , tho' a doubt should come into his Mind , whether any such thing as Metal be to be found in the World , yet nevertheless it cannot be thence inferred , that the Image of Caesar , and the Gold or Silver it is graven in , are two distinct things , tho' apart one may understand them to be so . In like manner , tho' one ▪ may possibly conceive Cogitation as a thing distinct from Body , yet we cannot rightly conclude that they are two Substances distinct from each other , induc'd only by this motive , that we can conceive them separately one from the other . XXXIII . Regius his Argument solved . But this or any such like example that may be brought by our Adversaries , is so far from favouring them , that it rather makes against them , and strengthens our Assertion ; forasmuch as not Gold , or any other Metal is the Primary Subject of Caesars Effigies , but Extension ; that is to say , that the Gold in which Caesars Effigies is Graven , is not therefore susceptive of that Image , because it is the Nature of that Metal to be so ; for then Images could be made of Gold only , and no other Metal , but because Gold is a Material Substance , that is , a thing extended , and in which the Images of any Men may be impressed or drawn . On the contrary , this Example makes on our ●ide : For if upon this account , namely , because some one carries the Image of Caesar in his Purse , and considers the same in his Mind , he cannot therefore imagin that there is such a thing as Body in the World , and consequently that the said Image ought to be the Mode of the Body : I find not why by the same Reason we may not infer , that Cogitation belongs not to Body , or is not an Attribute thereof , since we can suppose , that there is no Body existing in Rerum Natura , at the same time that we perceive we think . It appears therefore manifest in the conception of Cogitation , that nothing of Matter is concerned therein ; and that Body whatsoever Figure it may receive , and howsoever agile , pure or subtile it may be supposed , cannot conduce any thing to Perception ; for if a Corporeal Thing be indowed with Perception , and apprehends Objects offered , what distinction will there be between Soul and Body ? After what manner will Animals differ from Men ? Ho● will Brutes be Brutes if they enjoy the use of Reason , and have the same Sense as we ; if in the same manner they Perceive , Imagin , Judge and Discourse ? In vain doubtless Men challenge to themselves Rationality , and boast of a Spiritual Soul , so long as there is allowed a Matter capable of those Functions which belong to Incorporeal Substances , and distinguish them from other things . XXXIV . Hobbes his Reason to prove Cogitation to be a continual Motion . But methinks I hear Mr. HOBBES crying out , that there is no necessity I should have recourse to an Immaterial Principle for the producing of Cogitation , since motion it self , or the reaction of one part of matter against the other , or at least a due continuation of the said reaction can as well effect the same . For who finds not in himself that the Head is heated , and that all parts of the Brain are disturbed and out of order , when a Man is excessively taken up with serious Contemplation , or very eagerly confines himself to his Study for a long continuance of time ? This certainly would not happen if Sensation or Perception were not the work of Matter , or proceeded not from the agitation and motion of its parts , which being granted , what should gainsay , but that the diversity of Cogitations may be allowed to arise from the diversity of the Reactions of Parts upon each other , namely , while they compress themselves divers ways , and react , and are as it were beaten back upon one another ? Whereupon such will be the Cogitation of every Particle as the motion produced therein , and as this or that pulsation or pressure shall happen among them . XXXV . Hobbes his Hypothesis examined and argued of Falsity . Mr. HOBBES would make out something by this Argument if he could , first so far bring us to his Opinion , as to believe that there is nothing substantial existing in the World but Matter , and that whatsoever is produc'd , is extensive and divisible . For when as it is certain that Men are indow'd with Perception , and receive impressions of External Things , from Organs destin'd by Nature ; were this Hypothesis granted , there could not in my judgment , be assigned a more proper cause of Perception , than Reaction of one part of Matter upon another , and variety of Motion excited therein : But whereas this Hypothesis is altogether false , and it is certain that this World contains something thing else besides a meer heap of Bodies , and that what is in no wise Corporeal makes up a great part thereof ; Mr. Hobbes must excuse me for being of a different Sentiment , and totally averse from his Opinion . For according to this Doctrin , what should hinder but that Animals not only laid asleep in their Dormitories , but even their very Carcases after the Vital Flame is extinct , may be said to be sensible , and to be indued with the power of Perceiving , when as they are then no less capable of Reactions and susceptible of Corporeal Impressions . What should hinder but that the Eye of a dead Ox may be affirmed to see and perceive Objects , being so let in at the Casement of a Window , that the fore part thereof may look towards the Floor and several Objects illuminated by the Sun ; and the hinder part the innermost recess , which being all dark , must admit of no other Light but what enters by the Eye , all the Tunicles being taken away at the bottom , and to hinder the humour from falling , an Egg-shell , or some other white Body applied , by which at the same time one may behold the Image of External Objects no less distinctly formed therein , than they are form'd upon the retin Tunicle of a living Animal , especially if it be prest somewhat more or less , according to the distance . Well may the Head ake in serious Meditations , and some parts of the Brain be in an extraordinary manner disturbed , in regard such sort of local motions do only denote that the Mind , so long as it is tied to the Body , depends upon certain motions of the Body ; and that the action of the Body intervenes our sensations . So that to make us sensible , it must be required that an Organ of some one of our Senses be disposed in some such certain way as cannot be done without motion : For there is a great difference between that which in our sensations hath reference to the Body , and that which belongs to the Mind . Motion indeed impresses an External Object , and the mutation of an Organ and of the Brain relate to Body , but that comprehends no Perception , because that Perception consists not in motion , nor in reaction , nor in impression of Species , but in the conscientiousness or internal Cognition , which of our selves we immediately perceive , when we are conscious of those things which we do , or which are performed in us : But since such a Conscientiousness is something altogether distinct from local Motion , the Essence of Cogitation cannot consist in local motion . XXXVI . Not the parts of Matter , nor the whole , consisting of those , can be capable of Cognition . But let us examin a little more closely the Nature of Matter , and divide it into Monades or the most Minute Physical Particles . Next I inquire whether each of these Monades , separate from each other , can perceive , or are capable of Sense , or the whole Composition only resulting from them ? I cannot suppose any one so much a friend to Atoms , as to attribute intelligence to any one single Atom ; for who can be so stupid as to believe that the least particle of Matter imaginable , can be indued with Sense , and perceive , and think upon impressions of Objects coming from without ; but if the whole , consisting only of these Monades , perceives , and is indued with Intelligence , by what means , or by what artifice can it be brought to pass , that of things insensible , a thing capable of Sense should arise ? How from the various coition of Atoms , which are void of all quality , an Animal Cogitant , that is , Seeing , Hearing , Perceiving , &c. can result ? It is most evident that if when the Flesh is prick'd with a Needle , one Atom feels it not , two , three , four or more will never feel , no more than if an incision were made into the sides of a mass of Adamants , or other invulnerable things . And as Fingers connext , are separated without pain , so it is most evident that Atoms only conjoined with one another , may be divided without any sense of Pain : And for the better confirmation of this matter , we have Plotinus concurring in a high degree : If any one , saith he , shall affirm that the concurrent Atoms make a Soul , he is refuted by the consention of Passion , and the copulation of Nature ; forasmuch as a thing cannot intirely be one and compatient of Bodies not patient , nor admitting any union , and yet the Soul may be altogether compatient to it self . XXXVII . How a thing sensible , according to Gassendus , may be made of insensible things . The most Famous GASSENDUS , following Epicurus in this matter , answers , that one Atom is indeed void of Sense , but that nothing hinders but that Nature commixt after a certain manner , of many Atoms , may be capable of Alteration and Sense , and consequently that it is no wonder if a heap of Adamants , and such like Materials is not sensible , in regard it is not so composed , nor consists of parts so affected as to obtain the power of being sensible ; for he is of opinion , that sensible and insensible differ not much otherwise from one another , than a thing kindled and unkindled ; and as we see , saith he , a stick of Wood lighted by a Torch , and a Flame created in a new Subject : So what hinders but that a sensible thing may be made of insensibles , and that from dead things , as I may say , living may arise ? For as Lucretius saith , as Living Flesh is formed of Bread or Herbs , which are insensible ; and as from insensible Wood , certain particles may be produc'd , which so long as they are infixt into the substance of the Wood , remain unmoved , and as it were stupid and benum'd ; but upon the approach of Fire to them , are streightway roused and put into motion ; and being thus disposed into a new way of proceeding , they become invested with a power of giving Light and Warmth : So it is to be understood that the Fiery Particles , so long as they are divided , and lie skulking as it were in the Bowels of Matter , are quite destitute of Sense ; but when once they expand themselves , and rally into a state of motion , they agitate , vegitate and animate what ever Body falls to their Province , and impart Sense and Perception to it . XXXVIII . It is repugnant to Reason , that Sense should arise out of Insensible things . Altho' we should willingly yeild to GASSENDUS in what he asserts , and gran● that the Soul is kindled in the Body like Fire ; and that the Sense is that part thereof by which it is distinguished from other insensible things , yet still there would be no less difficulty to apprehend how it should come to pass , that since the Atoms of Fire or Flame , being divided from each other , do not perceive , or are sensible they should obtain the faculty of being sensible , or perceiving , when they come into conjunction , and are as it were associated and link'd together . For the grand Quaere will still be , by what way , or after what manner , out of those mixt Monades , Perception should arise , and from their union so great a power should accrew , that those things which before were insensible , should be rendred sensible . Here GASSENDUS is at a stand , and ingenuously confesseth that he cannot conceive , how a thing wanting Sense should , being mixt with others , procure sensation , and give that perception to others , of which it is destitute it self . Indeed , saith he , we must confess there is little hope of appearance how this thing can be manifested , since either we are altogether deceived , or all human Wit is wholly at a loss to comprehend what the Contexture or Contemperation should be either of this Flame to entitle it to be thought the Soul or Principle of Sense , or of that part or Organ , which being animated and vegitated , the Soul makes use of to perceive by . True it is , that a little after he brings certain Examples to make out the progress , by which sensible things may arise out of insensible ; first by the Fruits of Trees , which of sour , become sweet ; of unsmelling , odoriferous ; of green , yellow ; in a space of time so imperceptible , that at the beginning nothing of that quality which succeeds can be discerned ; and for the most part toward the end , nothing of that which was at the beginning ; by which he labours to insinuate , that in the like progress of time , that is imperceptible , a thing insensible becomes sensible and perceptive , which was at first void of Cognition . XXXIX . Gassendus his Examples prove not that a thing Sensible can be made of Insensible . But these Examples of GASSENDUS signifie little , for it is easie to be understood , that Fruit whilst it is ripening changes its Savour , and that that which was sour becomes sweet , namely , because the Juice , subdued by the adjutant Heat is refined , concocted , and strained , by which action the rough Particles breaking forth , the digested humour remains , which gratifies the taste , and produces a grateful savour ; and for the Colour we may eaeasily enough apprehend how the Fruit changes , and laying aside its Green Colour puts on a Yellow , that is to say , while the Fruits are ripening , the percolation is perfected , the parts subdued , the juice purified , which swells , froths and ferments ; all which things , since they cannot be without transposition of the parts , the colour also consequently must needs be changed , and its aspect affect the Eyes in another manner than formerly . But we can by no means conceive that many Atoms joined together can beget Perception , and that from their various Perception a Sensitive Faculty should arise . For since Consciousness , as hath been before observed , is included in Cognition and Sensation , the Atoms or Monades of Matter cannot obtain such a Disposition , or so enter into an Association one with another , as to produce that affection in the Body , as being proper to Immaterial Substance alone , and inseparable from it . XL. Cogitation can no w●● belong to a Corporeal Soul. Besides , it is very difficult to be understood how Cogitation can be received into that Corporeal Soul which they call Igneous ; for either Cogitation is received whole , in the whole Matter , or whole in several Monades or small Particles : Or lastly , The several parts of Perceptions are in the several parts of the Matter . If the whole Matter , that is , the Soul of the Brute , admits the species of an Object , it appears not how the Senses can be distinguish'd in it , since each of the Monades must supply the place of a Sensorium , and the emitted Species be promiscuously effused ; for how shall the Ear be deputed for the receiving of sounds , rather than the Eye , if in the whole Soul this sensation be received , and every particle thereof hears , and is smitten with the undulation of the Air ? Why should the Eye rather than the Nose be assigned the Organ for the discovery of Objects without , if the whole Soul by a very swift perception apprehend things far distant , and in every point thereof the species of things be represented ? And so in like manner of other Senses . But if the several parts admit the whole Image of the Object , one point of the percipient must needs behold innumerable Species of one and the same Object , and equal that Object by which it is exceeded almost an infinite number of Senses , which I think no Man in his right Senses will allow . For how can it possibly be imagined , that one Physical Monade , which is taken for granted to be the least particle of Matter , should receive the whole Image of any expanded Object , or variously tincted Colour ? If lastly each part , of Matter answer to each part of Perception , the whole Object can never be discerned , in regard when each of the parts of the Percipient only admits each of the parts of the objected Image , there will remain nothing which can perceive the whole Object , and make the judgment thereof , no more than if three Musicians , singing a Song of three parts were intent each upon his own part only , any of them could hear the part of the other , or be able to judge of the whole Symphony . XLI . If Brutes perceive , how are Men distinguish'd from them ? The Idea's therefore of Perception and Extension are wholly disjunct , so that neither Perception can be the attribute of a thing extended , nor on the contrary Extension of a thing perceiving ; neither doth it any way make for those who believe that our Souls die with our Bodies ; forasmuch as if we grant Cogitation to Beasts in like manner as to Men , certainly we must needs determine that our Souls are different from the forms of Animals , not so much in Species and Nature , as in Degree and Perfection ; for if they can remember things past , perceive things present , and provide against things to come , and propose an end to themselves , I see not what is left for Man , whereby he can have any praeeminence over Beasts , except perhaps that he performs the Functions with greater ease , and in a far more excellent manner ; so that it is to be feared , if we should attribute to Beasts an intellectual Memory , and a proposal of an end to any thing they do , and a certain reflexion upon any of their own actions , it would arm the Impious against the immortality of a Rational Soul. XLII . God concreate Machins which may imitate the actions of ●rutes . Now therefore that it is apparent and confirmed by divers Arguments , that Matter cannot be a principle of Motion , and that it is of so obtuse a Nature , that it cannot be conscious of any thing it suffers , or be able any manner of way to perceive any thing ; who can be so bold as to deny that the Great Creator of all things , upon whose beck all Created Beings do depend , could have framed such sort of Machins as might resemble the same motions , and exert all manner of actions exactly like those which we see performed in Brute Animals ? That GOD is able to frame such Machins is confessed by all Men , and paticularly is clearly maintained and proved by the wise and learned St. Austin , in his 102 d. Epistle in these words , I wonder you should believe that the ●ound of the Voice , which said , Thou art my Son , could be so uttered by a Corporeal Nature only , without the mediation of Human Thought , and only by Divine Instinct ; and not conclude at the same time , that the Corporeal Species of any Animal whatsoever might not be made in the same manner , as likewise a motion like to that of a Living Creature , by Divine Will , without the interposition of any Animal Spirit : For if every Corporeal Creature be at GOD's command without the Ministery of a Life-giving Soul , so far as that such sounds may be uttered as come from an Animate Body , and by which a● articulate form of speaking may be conveyed to the Ear ; why may not the like obsequiousness be shewn in this , that without the Ministry of a Life-giving Soul , a Figure and swift Motion , may by the same power of the Creator , be conveyed to the sight ? I will not here repeat what I quoted in the Preface concerning a Machin which carried Letters to the King of Morocco . Who can but admire that a portable Dyal or Watch , should by a certain figure of parts , disposition of Wheels , Spring or elastick Force of Steel , measure the times , and declare to the least part of a Minute all the Hours of the Day and Night ? Who without wonder and astonishment can think of that Machin which Sir Kenelm Digby affirms he saw in the Mint of Segovia in Spain , which was contrived with that Artifice , that every part thereof had its various Offices , and was assigned for its proper Action . One part extends into its due latitude , the Mass of Gold or Silver , and gives it that thickness which the Coin requires ; the next to this shapes the Plate so distended , and designs the Stamp ; and having so done , transmits it thus stampt to another , from which it receives its Weight and due Figure according to the Stamp imprest upon it . At length the Coin thus perfected , is conveyed into a receptacle built for that purpose , where he , whose Office it is to collect and keep the same , finds all the Mony ready prepared to his Hand . Who could be otherwise than highly astonished that had seen Daedalus his Wooden Venus , which with Rowling Eyes seem'd to look upon , and take a perfect view of all Sp●ctators , and likewise to move up and down with her Feet , and exactly to imitate all the actions of a Woman , so that she might be judged by all to be a Living Creature , and to have a free faculty of moving from place to place ? XLIII . Several Machins made by Man to imitate the motions and actions of Brutes . Who can but wonder that hears of the Wooden Pigeon of Archytas the Tarentin , which having Wings set on it , flew up and down like a Living Bird ? No less an object of wonder was that Statue of a Man , framed by Albertus Magnus , which moved up and down with distinct Steps and Paces , and uttered Words as articulate as any Human Voice could utter . Most wonderful also is that which Historians report of the Norimberg Eagle , which was so framed by Athanasius Kircher , that it flew to meet the Emperor Maximilian , and hovering with its Wings over his Head , accompanied him all the way in his return to the City . To conclude , the Statue must not be forgotten , which being made by an Ancient Artist , and set upon a high Mountain , saluted the Sun each Morning at his Rising with a Hymn , composed in exact musical Harmony . Yet no Man can be so foolish as to imagin , that in such like Machins , there is any Soul or Cognition required for the performance of all these things ; but on the contrary must of necessity acknowledge , that all operations of this Nature proceed from Figure , Order , and a certain magnitude of Parts . Why may we not therefore conclude the same thing of Animals , since all their parts may be so fitted and connected that the same circuit of Blood , the same vigour of Spirits may actuate them , as we find to be in a Living Dog , since those various movements , fram'd by Human Industry , are effected by the help of little Wheels and other Instruments , which are but very few in comparison of the almost infinite multitude of Bones , Muscles , Nerves , Arteries , Veins , and other Organick Parts which are in the Body of every Animal ? And therefore no wonder if this sort of Machin have more admirable motions than any that can possibly be made by Human Art. XLIV . The comparison of a Living Dog with the Automata made by Art. But to make out more clearly the similitude between these Antomata made by the Hands of an Artist , and real Auimals : Let it be supposed that GOD should compose a Machin exactly imitating the Actions and Passions , for Example , of a Dog , and place it among other Dogs , by what ways and evidences should we be able to discover the true Dog , whose movements are thought to be effected by Cognition and Design , from the Machin , whose motions and actions are all produc'd by the disposition only of its Organs , and the impulsation of Objects ? Certainly I think no manner of ways , for that there might be justly as●igned to both a like force , like Ingenuity , and an equal faculty of Acting , Moving and Thinking . Now to make the matter a little more manifest , let us take into examination what that Mans judgment would be , who should live confined in a desert Island , and being barred from the sight of all Animals which we call Brutes , should through the whole course of his life , see no other Creature but Man , and who at the same time should be addicted to Mechanick Arts , and to imploy his time wholly in the making of these Automata , or at least to be conversant with those who made it their business to frame Machinaments of divers sorts ; as of Man , Horse , Bird , &c. Let us also suppose that these Automata did not only go up and down , eat , breath , &c. but also so far imitate all the motions of Animals as to represent their ●erfect Species , in so much that upon a blow given , they should set up a Cry , and with great noise and tumult betake themselves to their Feet ; nay more , should come when they were called ; in a word , should do all things which Men are wont to do when they are hurried with passions , and wreath themselves into various motions : Undoubtedly this Man , setting aside all ambiguity , and uncertainty of Mind , would judge such sort of Machins to be real Animals , and that they live , move , act , desire , think and know as we do . As a certain Prince of the Chineses , when he first saw a WATCH , judged it indued , not only with Life , but also with Sense and Reason , in regard of the constancy of the motions which he observed in it , till upon the opening of the Watch , the sight of the Wheels wound up into motion , discovered the Artifice , and awakened him out of the error he had entertain'd . XLV . Whether these Machins can be called Animals . It will be doubtless replied to all this , that should GOD frame Machins to move thus by Springs , however they could not be called Animals , since an Animal is not a thing which meerly moves and makes a noise , for so a Machin may easily be made to do , but that it is in the nature of an Animal to be sensible , and to perform all its motions by a vital and internal Principle , which hath the faculty of perceiving and being sensible , which Properties can never be allowed to a Machin . But the grand matter in dispute is , whether it be in the Nature of Animals which have not a Spiritual Soul , to think and perceive , and we say no : And that all we observe of Beasts is , that they are but Corporeal Movements , and so a Machin may be ; so that to say that these Movements proceed from a principle which perceives and is sensible , is to Divine . Moreover it is impossible they should act in such a manner , at least so far as to be allowed Souls wholly spiritual as the Soul of Man is . XLVI . The Error of those , who from the external form of the Members of Brutes , imagin they are indued with Cognition like us . Hence we may see how gross their Error is , who observing that the Members of Brutes differ not from ours in the external form , and that their motions are like to our motions , presently infer that the same principle is common to both , and consequently that there is a Soul in us which produceth these effects , and which imparts motion to the Body , and is indowed with the faculty of thinking ; so that there must needs be a Soul in Animals which executes the like offices , or which actuates their Members , and is a principle of Cognition in them : For say they , it is not to be doubted , but that there is great affinity between divers actions of Animals , which gives the youngest capacity occasion to judge that they perform their actions in like manner as we do , and by the means of the Soul , have passions alike ; that they have an Appetite to things agreeable to them , and an aversion to things disagreeable ; that they delight in some Images of Objects , and dread the sight of others : But the truth is , if we come to a strict examination of the matter , and inquire throughly what that is which we make the principle of Animal Functions , it will evidently appear , that we are led out of the way by a meer Childish prejudice , and that we are prepossest with this Opinion , only by a natural and unthinking apprehension of things ; for if these sort● of Machinaments were set before our Eyes , we should find no footsteps of Reason in them , tho' never so much resembling the Species of a Dog or a Horse , or should imitate all their actions ; and hence it is to be concluded , that Animals are indeed nothing but meer Machins , destitute of all Cognition and Sense . XLVII . What difference is between Men and Brutes . Why may not , you will say , the same judgment be given of Machins , representing our Bodies , since those also imitate Human Actions , and have motions as like as may be , to ours ; and consequently as we infer that Machins like to Animals are void of Cognition , since we see the same or the like Actions in the Automata which are framed after their Species : By the same Argument is might be inferred , that Men also are destitute of Cognition , because their motions are altogether like to those in the Machinaments , as to the external Figure , and it is apparent that Apes have all those which appear in Men. To this I answer , that tho' those Automata represent the Figure of Men , and imitate as much as morally can be all our Actions , yet they are to be discerned from real Men two manner of ways ; First , because they could never be indued with the faculty of speaking , so as to express their thoughts by words or signs , or to answer appositely to those things of which they might be interrogated , as Men in discourse use to ; who by certain signs open their Mind to others , and discover the secrets of their Hearts : For tho' we may fancy a Machin made with that Artifice , as to utter , nay distinctly to pronounce certain words which may exactly answer the presentment of Objects , moving its external Organs ; as for example , if it should chance to be smitten in some one part , it may act what we mean , and if it be toucht in another part with a lighter Hand , it may say we favour it , and such like expressions ; yet never so as to adapt its words appositely , and in a proper stile , so as to answer congruously to all things that may be proposed to it ; as we find daily Men of the meanest capacity , and sometimes those hardly in their senses to do . The Second way is , that altho' the motions of such Machins are orderly , and sometimes also exceed the motions of the wisest of Men , yet in many things they err , and deviate most from us in those things wherein they should chiefly imitate us . Whence it is manifest , that those sort of Machins are not conducted by Reason , nor indued with Cognition , but impelled to these performances by the disposition of their Organs only . Whereas Men , tho' never so stupid , nay even sensless , are able to put divers words aptly together , and of them to compose an orderly Speech , whereby they can discover their thoughts , and declare what they design in their Minds . On the contrary no Animal is found so perfect , and born under so favourable a Star , that he can approach towards intelligence , or perform any thing that can come near it . All which happens to Beasts , not through the imbecillity of their Organs , nor through the defect , nor impotence of forming words ; forasmuch as we find by experience , that Magpies and Parrots are Loquacious , and utter human expression , yet cannot speak as we , that is , in such manner as that by uttering certain words , their answers can correspond to our interrogations , and manifest to us that they understand what they utter ; whereas daily experience informs , that Men deaf and dumb from their Birth , ( and doubtless such Men have a defect in the structure of their Organs more than Beasts ) yet in the same manner as we make use of signs ; nay , and by their own ingenuity find out some ways to make known their Conceptions , and discover what they have in their Minds to those with whom they converse ; which since Brute Animals cannot do , it is apparent that they are not only indued with a lesser power of Cognition , but are altogether void of Reason ; and that they not only want Human Cognition , but are also destitute of whatever other way can be thought on to express themselves ; in a word , that they are Automata , and act not by Choice , but by meer impulse : And here we are given to understand , how vain the Opinion is of some certain People of the East-Indies , who think that Apes and Baboons , which are with them in great numbers , are indued with understanding , and that they can speak but will not for fear they should be imployed , and set to work . XLVIII . The Brutes cannot discover their thoughts by any signs . But that Brute Animals are indued with no Cognition , may easily be demonstrated ; for if they could discover to us their Cognition by any signs , they must of necessity do it by Speech , or by some other notes , accommodated to whatsoever obvious Object , as namely , variations of their voice , or some other Actions of their Body , which should be concluded on as signs of their Cogitations , and such signs as should not only signifie naturally , but by design . But since we can apprehend no such signs in Brute Animals , and observe in them only natural signs of their Passions , and no moral or designed marks can be discerned in them ; we may boldly conclude that Beasts are not indued with any faculty of thinking . Now the Reasons which induce me to assert , that there are no designed hints in Beasts to be discerned , are especially two . The first is , because intimations by design , when they depend only upon the will and pleasure of the thing thinking , and borrow their efficacy from the will thereof ; it seems morally impossible but that they must be various according to the diversity of Times , Places and Persons concern'd , in regard the Cognitions and Aims of the thing thinking , can have no necessary connexion with the actions with which they correspond . The second is , that if the Clocking of a Hen , upon notice of a Kite's lying in watch for her Chickens , or the Outc●y of any other Animal were plainly by design ; it would be impossible for the Chickens or Young ones , ever to understand such sort of sounds which are uttered at pleasure , and according to the humour of the Animals that uttered them : For tho' the Young Ones of the Swallows mentioned by Gassendus upon the hearing of I know not what noise of the Old Ones , presently fled away , and leaving the Tree , where they neasted , followed the tract of their Parents : For so this Eminent Person relates , viz. that walking alone in the High-way , and passing unde a low Bough of a Holm Tree , he spied three young Swallows , who sitting upon the said Bough as he passed by , could not choose but see him , yet never stirr'd or offer'd to flie away ; whereupon passing by the third time , he reached out his Hand , as it were to take them , yet still they remained immoveable , no sign being given to prepare for flight ; but when the two Old Ones came to the place , and uttered I know not what kind of murmuring tone , they fled in an instant , and with a swift Wing betook themselves to the Air. If this chattring were design'd , how could the Young Ones , being not long hatch'd , know it ? Nay , which is more , and which exceeds all belief , how comes it that Chickens newly broke out of their Shells , and other Animals newly yeaned from their Dams , send forth sounds always alike , and imitate the Speech , as I may so say , of their Parents ? These things sufficiently declare that these sort of voices are inbred , and that they are taught by nature to signifie and discover their Affections by certain signs . XLIX . There are in Man two principles of motion , Mechanical and Spiritual . Hence , as I said before , may be gathered how grosly those Persons are deceived , who , because they observe in Brutes , Motions like to those in Man , and Organs also alike , perswade themselves , that there is the same principle of motion in them as in us , and that they proceed alike in both from the Soul ; so that there must be a like Soul assigned to Brutes , upon which their motions depend : Contrary to whom we plainly discern that there are in us two Principles of our motions viz. one mechanical and Corporeal , which depends only upon the disposition of the Organs , and a continual afflux of Animal Spirits ; forasmuch as the Essence of the sensitive Soul consists only in the motive Power . Another spiritual and incorporeal , namely the Mind or the Soul , which we have formerly defin'd to be a thinking Substance , by reason that all its Nature and Property is placed in Cogitation . We have concluded that all motions as well in us as in Brute Animals , may flow from a mechanical and corporeal Principle , and consequently that there is no necessity to imagin any Soul in Brutes , besides the force of spirits and conformity of members . L. All motions in all Animals are explicated by a Mechanick Principle . The thing will more evidently appear , if we briefly , and as it were in transitu make out that all motions in Man are mechanically effected , that is , without any impulse of the Soul , but only by the help of Organs and Instruments , as may be performed in a Machin , which the more happily to go through with , it will not be amiss to begin from the motion of the Blood , because on the circulation thereof depends the animal Life , which upon the ceasing of the said circulation is extinguish'd . LI. The motion of the Heart is performed without the help of the Soul. Suppose therefore according to DESCARTES , that in the Heart of the Soul there is a fire , not lucid , but as it were occult , and not much unlike that which is kindled in Aqua-fortis by throwing a sufficient quantity of pulverised Steel , or which is to be observed in fermentations , or as some of the Moderns will have it , that a certain heat is excited by the help of the Blood in the Heart , not much different from that which ariseth from the mixture of Oil of Tartar and Oil of Vitriol . But from whatever cause this heat of the Heart proceeds , whether from some external calidity , or from some corrosive Salts or sulphureous mixtures acting mutually upon each other ; or lastly from the Blood , continually circulating through it : Certain it is , that the Blood impregnated with heat , must needs be dilated , and affect a larger place . For the nature of heat consists in motion ; and its chief property is to expand those Bodies in which it is predominant , and to augment their bulk by division of parts : As appears in Milk , Oil and other Liquors , which being held to the Fire grow turgid by degrees , and are inlarged by the conceived Fervour ; So that when by this latent Fire the Blood wherewith the cavities of the Heart are filled , becomes extended , and is necessitated to possess a greater space , it must pass from the right Cavity into the Vena Arteriosa , and from the left into the Great Artery , because these two Vessels are alway filled with Blood ; and their Orifices which are toward the Heart cannot be closed up . This evacuation being made , however the motion of the Heart never the more ceases , by reason that the Blood , which had been rarefied in both Ventricles of the Heart being broke out through the Vena Arteriosa , and the Aorta , that little Blood which still remains in those Cavities , and that which being new , slides into the said Auricles of the Heart , are like the foresaid Liquors , of which one supplies the place of a ferment to dilate and heat the other , and this is the only thing which gives motion to the Heart , and causeth it incessantly to flow , and with wonderful swiftness to be diffused through the whole Body . LII . By the same Mechanick Operation the Blood circulates through the whole Body . But that we may the more easily conceive after what manner this Motion perseveres , and how the Blood , during Life , is carried from the Heart into the Arteries , and from them into the Veins , we must imagin that as often as the Vena Arteriosa receives the Blood just dilated in the right Ventricle , that very Blood propels other Blood with which it had been repleted before , and causeth it to exonerate it self of a part great thereof , and transmits it into the Arteria Venosa into which it flows , not only through those Anastomoses , which are discerned by the Eye , but also through infinite other Spiracles which are in the extremeties of the Branches of the Vena Arteriosa , and which meet in the extremities of the Branches of the Arteria Venosa . It may at the same time be imagined , that as often as the Aorta draws the Blood , which a little before dilated it self in the left Cavity of the Heart , that Blood thrusts forward other Blood contained in that Cavity , and compels it to free it self from that burthen , by driving it into the Branches of the Vena Cava into which it penetrates , not only by sensible Anastomoses , but also by innumerable other passages , which are invisible to our Eyes . From such a disposition of the Vessels which contain the Blood , it necessarily follows , that the whole mass of Blood flows about the whole Body , and still returning to the Heart , from which , as from its original Fountain it first sprung , is agitated and forc'd to move in a perpetual Round . For the Arteries and Veins of the Body are like Rivulets , through which the Blood incessantly , and with wonderful speed flows , taking its course from the Veins into the Arteries through the Ventricles of the Heart as in Animals , yet living , is manifestly seen ; forasmuch as upon the cutting of a Vein , the Blood flows out in an intire Body , and the Veins by degrees become lank , that is to say , the Liquor being let out wherewith they before swell'd . The Blood therefore being impell'd from the extreme parts of the Body towards the Heart , flows through the Vena Cava into the right Lobe of the Heart , and then into the Arteria Magna , which drives it upwards , downwards and sideways into the Great Veins , thence into the lesser , and oftentimes into the very substance of the Flesh , in regard the Branches of the Arteria Magna , being dispersed through the whole Body , are knit to the Branches of the Vena Cava ; which at length carry the same Blood into the right Ventricle of the Heart , in order to begin a new Circuit . LIII . Whence ariseth the Pulse of the Heart and Arteries . Upon this continual Circuit of the Blood depends the Pulse of the Heart and Arteries ; for since these two are no other than a Species of alteration which is perform'd by turns , and in such a measure that the Pulses of the Arteries answer to the Pulses of the Heart ; it may be easily concluded , that those motions proceed both from the same principle , and consequently that that principle is no other than the very Alteration which the Blood undergoes in the Heart . Wherefore it is most rational to believe , that as often as any portion of the Blood falls into the two Cavities of the Heart , it mingles it self with another portion , which was there remaining before ; which filling the inmost recesses of the Ventricles of the Heart , gains there a new degree of heat , and as hath been already hinted , gains a certain nature , as it were , of a Ferment ; whence it comes to pass , that the substance of the Heart is forced to dilate and extend it self . Afterwards a greater portion , which was included in those Cavities , breaking forth through the Aorta and Vena Arteriosa , the Heart falls in and stretches its Longitude . And in this perpetual mutation of the Figure of the Heart its motion consists . The Diastole or Dilatation of it is when the Blood being rarefied within its Ventricles , the Mucro or point is drawn in towards the Base ; the Systole or Contraction is , when the Blood being expelled , the Heart falls in , and comes to its proper shape ; for the Diastole and Systole of the Heart are no other than its Intumescence and Subsidence , that is to say , as the Blood by turns thrusts forward and retires , the Heart alternately swells , and is deprest . LIV. Upon the motion of the Heart depends the Pulse of the Arteries . The Pulse of the Arteries follows the motion of the Heart , and consists chiefly in this , that by the Blood dilated in the Heart , and insinuating by a motion of Vibration through their Tunicles , they become inflate , as may be experimented in opening the Breast of an Animal , yet respiring and labouring for Life ; for at the same instant wherein the Finger put to the Artery is impell'd , the Mucro or Point of the Heart is withdrawn to the Basis , and its Flaccid sides which are toward the right and left Ribs , are lifted up towards the Midiastin-wall of the Heart ; and the side of the Heart which is directed towards the Stern , is totally , but especially at the Basis erected , and so the Heart is sensibly inflate and extended , beats the Breast , and begets a sensible Pulse ; but the Arteries abate of their swelling whilest the force of the Blood is remitted , that is , some part of its agitation being lost , because then the Arteries sink and return to their pristin state , which may be discerned in the Breast of an Animal yet breathing , and especially being near the last gasp ; for at the same moment in which the Artery ceaseth from its impulse , the side of the Heart which is towards the Stern appears to sink , and all its substance to become soft and flaccid , from whence it is apparent , that the circulation of the Blood is attendant upon the motions of the Arteries , and that this motion is reiterated as often as new Blood makes its ingress into the Heart , and is varied according to the diversity of qualities found in the Blood , which render it susceptive of a quicker or slower motion . LV. That the Animal Life , as also the concoction of Meats depends upon a Principle only Corporeal . If the Animal Life depend upon a Mechanick Principle , if the motion of the Heart , the pulsation of the Arteries , the flux of the Blood , and its circuit through the whole Body proceed from a corporal and mechanick Cause only , what hinders but all other motions , for example , the Concoction of Meats , Nutrition , Respiration , and the like , may be attributed to the same Principle ; when as we see that all these things , without any of our Labour , and even Sleep , are performed by the Functions of the Soul , and require no immaterial Cause to their assistance ? For what is there of the Mind or of Spiritual Substance that intervenes in the business of Chylification , whether in the first or second Concoction of the Aliment ? What happens in Meat converted into Chyle , which may not be performed by conformation of the Members ? The Meat well chewed and macerated by the Spittle , is conveyed into the Stomach ; by whose means ? Certainly by no other means but of the Tongue , and the Oesophagus or Wind-pipe ; the first of which having turned the Meat up and down some time in the Mouth , and being as it were the Hand of the Ventricle , commits it to the Mouth of the Oesophagus , and by a certain force casts it in ; the latter by the help of its Fibres , contracting it self after the manner of an Earthworm , swallows the ingested matter , and conveys it farther in ; but in regard the Meat is but lightly shred by the Teeth , and there ought to be a further dissolution of it in the Stomach , so as to reduce it into Chyle , there is an acid and piquant humour , which issuing out of the Arteries , slips into the Stomach , and finishes the work begun in the Mouth . For since there are many Branches of the Arteries , which terminate in the interiour superficies of the Ventricle , a great quantity of the foresaid humour distills through them , which being mingled with the Spittle wherewith the Meats are macerated , helps their digestion , and also brings it to perfection , the said Liquor being as it were a certain Species of Aqua-fortis , which getting in among the particles of the Meats , swallowed and eaten , help their dissolution , and makes a Chyle out of them . The Meats thus digested , slip towards the Intestines , where the Chymosis and Haematosis , or second and third Concoction may be said to be performed , because the Gall which flows into them , and which imparts a colour to the Meats as soon as ever they pass out of the Ventricle , puts the last hand , as we say , and brings to perfection that which only was begun by the foregoing Liquors . LVI . How Sanguification is made is made in the Body of any Animal . The Meat thus dissolved into Chyle , as soon as it hath gently and gradually flow'd through the Intestins , is pressed forth , and is conducted through the Lacteal Veins , which running out in small but almost innumerable Pipes , receive the Liquor as it grows white , and convey it into that which is called the Pecquetian Receptacle , so called , because Dr. John Pecquet in his Book which he wrote concerning this matter , challenges to himself the first invention of it ; from which Receptacle other Chyliferous Pipes arise , which proceeding directly upward through the Breast it self , conduct it onward to the Subclavian Branches of the Vena Cava : From whence the Chyle running at that very place into the decurrent Blood ; and being well mixt therewith , and passing through the Vena Cava , as well above as below , enters the Heart ; where by a fermentaceous effervescence there excited by the heat of the Heart , it changes its colour , namely , from White to Red , whence appears the falsity of that opinion received by the Antients , namely , that the Blood is wrought in the Liver , and that the Chyle is carried through the mesaraic Veins in the Mesenterium , so into the Vena Portae , and from thence into the concavity of the Liver , where it is peculiarly fermented , and as the Chymists call it , digested and separated from the admixed Choler , and turns into a Red Juice ; when as indeed no part of the Chyle at all arrives so near the Liver , as that it can thereby be changed into Blood : For how can it be , that the Liver should create Blood , and bring a redness upon the Chyle , when not the least part of the Chyle is ever conveyed thither , and it hath been sufficiently made out by innumerable diffections of Animals , that it passeth through the Subclavian Branches , and is by them infused through the shortest Trunk of the Vena Cava into the Heart . LVII . The Nutrition of Animals is made by the Circulating of the Blood through the whole Body . These things have undesignedly slipt my Pen , my intent being only in this Discourse to describe in a few words the Oeconomy of Animals , and to evince , that all the functions of the Body may be mechanically explained . Let us therefore follow the tract of the Blood , and go on according as we are led by the course thereof . The Blood being rarified in the Body , and going out with a force into the Arieries , it cannot be otherwise but that many particles thereof must make a stop in those members which they are nearest to , and there possess the place of some parts which they thence expel , and according to the figure , situation or exility of the Pores which they find , cause some parts rather than others to flow into certain places , in a manner not much unlike what we see done by some sort of Sieves , which in regard they are contrived with holes of a different kind of bore , serve to separate from each other Grains of Corn that are of various Species : or as the same Rain adapts it self to Plants of a different kind , and in Mustard , grows sour ; in Rue , bitter ; and in Liquorice , sweet ; so the Blood being diffused through the whole Body , transmutes it self into the substance of every part , and is dispens'd according to the diversity of their Pores , and agglutinated by a certain streight Union . I have said that the particles of the Blood stop in the members to which they are nearest , and possess the place of others which they thence expel , because it cannot be doubted , as experience teacheth us , but that there is a continual transpiration of sensible parts through the pores of the Body , and that some particles are ejected . For , if we consider the thing well , saith the Famous Glisson , in his Anatomy of the Liver , we breathe out almost as much again as we take in ; and when any one breathes upon a Looking glass , a little Cloud is left upon it in the nature of a balmy dew : And as to what concerns the other parts , if by the inner part of the Thumb a little warm , a Plate of Polish'd Silver or Pewter be touch'd , the Vapour thence breathing out , will presently leave a spot upon the Metal : And to him that considers well , that the same expiration is made from all parts of the Body , Sanctorius his Calculation will not seem much from the purpose , who upon trial made of his Observations in this matter , affirms , that of all we eat and take in , more than a half part is consumed by insensible Evaporations ; nay , and that as much of Aliment is voided in a day through the latent pores of the Skin , as by Stool in fifteen . LVIII Respiration is also Mechanically performed . With the same facility Respiration may be explicated , by the same principle ; forasmuch as the Chest being dilated by the help of the Muscles , and especially of the Diaphragma , the Lungs are inlarged or contracted , and by the means hereof we draw the Air , and immediately expel it again with the admixture of Vapours : For the Diaphragma is a certain Muscle dividing the Breast from the interiour Ventricle , of a singular Nature and Fabrick , and aptly framed both for self-motion , and for impelling the gristles of the Ribs to which it adheres ; whence upon its tending downward , the Air must of necessity enter the Lungs through the Trachea , or Aspera Arteria for the effecting of respiration ; but when the Diaphragma ascends upwards to recover its former situation , the Thorax or Chest is contracted , by which means the Lungs are prest , and expel through the Aspera Arteria , the Air contain'd and kept in ; and this is that which is called Expiration . Nor is it to be thought , as some will have it , that in Inspiration the Air enters into the Breast for fear of a Vacuum ; or that it penetrates into it spontaneously , and without any compulsion ; for this sort of attraction or spontaneous Ingress is a meer figment ; when as the motion of Bodies cannot be performed but by Pulsation ; for the external Air is brought into the Lungs for no other cause , but for that the Cavity of the Thorax is inlarged , and forcibly driven into the Breast , because when the nearest Air , the Breast being unfolded , is expell'd ; and because of its thickness , cannot plentifully and speedily enough enter it ; Nor , because of the subtile Matter intervening and dilating it , be condens'd , it follows that it must needs be driven through the Aspera Arteria into the Thorax , as we see daily in the blowing of a pair of Bellows , where the Air is propell'd into its cavity , while the sides are expanded , so that the Diaphragma is of all parts serving to respiration , the first mover ; and from whence , as from the Fountain , the motion of all those parts ariseth and depends : To believe which I am chiefly induc'd by this Reason , ( tho' I could produce many others of no less moment ) namely , that upon the opening of the Thorax , presently the Lobes of the Lung fall in , and for a little space are deprived of all motion , while at the same time the Diaphragma nevertheless intermits not its motion , but contracts and extends up and down , and attracts , as Gassendus calls it , and moves at once the Gristles , and the extreme part of the Spurious Ribs , to which it adheres : Whence it comes to pass , that the Air is attracted by a wound into the cavity of the Breast ; so that no wonder if , as the same Author relates , the Wound hath sometimes suck'd in a piece of Candle into it , as appears by the relation of Bonanus the Surgeon , who in curing an Empyema , near to the Diaphragma , when the better to make his inspection for the extracting of the putrid matter , he drew asunder the Orifices of the wound entring into the Breast , and bid the Servant hold a piece of a lighted Wax Candle ; the said Candle being not held very fast , was snatch'd away , and attracted into the Wound , and not till after eight days space , and the indurance of may grievous symptoms drawn out of the mouth of the wound with much ado ; so that by this we may plainly see that it is the Diaphragma , which alone contributes to our Natural Respiration , when asleep , or ceasing from pains and labour ; and that all the Muscles , whether of the Abdomen or others , do nothing but obey its motion ; whereas to a violent Respiration , and not Natural , and which at pleasure we hasten , retard , restrain , intend or remit , somewhat more than the Diaphragma must contribute ; since the Organs of voluntary motion are the Muscles , and consequently both the Diaphragma it self is concerned , as it is a kind of Muscle , and also other Muscles as they attract , lay open , press and urge divers parts to which the Diaphragma is tied , or is contiguous . LIX . That there are Animal Spirits , and of what parts a Muscle consists . Besides , the foresaid motions of Animals , whose Original and Causes have been already treated of , there is another called Muscular , to be made out ; namely , that which is performed by the influx of the Animal Spirits , and depends altogether upon their action : Which the more clearly and easily to do , we must suppose in the first place , that by the name of Animal Spirits , there is nothing else to be understood , but the more vivacious and refined parts of the Blood , which being strained as it were through a Sieve , through the Branches of the Arteries called Carotides , are separated from the grosser parts , and are thence conveyed through the Vessels of the Brain ; from which they are diffused through the Nerves into all the Muscles : But why the parts of the Blood which heat hath rarified in the Heart , should tend to the Brain , rather than elsewhere , there is no other reason to be given , than because the Arteries which convey them thither , proceed from the Heart , by the most streight Line , and are driven directly without any declination into the Brain ; but according to Mechanick Rules , which are the same as the Rules of Nature , when divers things tend to one and the same place , where there is not space enough , they must betake themselves to any other where they can , because the ways are very narrow , as happens in the pores of the Brain , the more subtile and more quick particles alone enter the Brain , the rest diffusing themselves through all parts of the Body ; so that those which do enter , are to be look'd upon as most subtile winds , and purest Flames : In the second place we must suppose that a Muscle is not only fleshy , that is , of a thin , and as it were Spongy Substance , the more easily to receive the Animal Spirits , but also many times contain Nerve , Ligament , Tendon , Membrane , Artery and Vein . It consists of Nerve , as of a certain Canal , through which the Animal Spirits are deduc'd into it from the Brain , and the Medulla Spinalis : Of Ligament to render it the stronger , and be able to resist the incumbent Members , and to exercise its motions the freer : Of a Tendon , that it may perform its motion the more promptly , and regulate its actions the more strongly : Of a Membran , lest the foresaid parts of the Organ of Motion being deprived of a Covering , should be exposed to the injuries of External Bodies , and lest the Animal Spirits , being entred into its substance , should be dissipated , and evaporate by Transpiration : Of Veins and Arteries , thereby to supply it with Aliment and Vital Heat , by the influx whereof all the Members of the Body are enlivened and corroborated . LX. What a Muscle is , and why the Ancients distinguish it into Head , Tail and Belly . Ancient Anatomists described the Fabrick of a Muscle by a distinction of Head , Tail and Belly , taking for the Head of the Muscle the Extremity joined to that part , at which the contraction is made ; for the Tail of the Muscle , they took the end or portion inserted into that part which causeth motion ; and lastly , they called the Belly , that intermediate part of the Muscle , which appears more tumid than the mass of Flesh . But we may further observe that a Muscle is , as the Famous Willis hints from the most Learned Steno , either simple , which consists of one only Ventricle , and two Tendons , of which sort there are several in the Arm and Leg , which are the Movers of the Fingers and Toes ; but they are also frequent up and down in other parts of the Body ; or Composite , which hath several Ventricles , upon each whereof there hangs two opposite Tendons , yet so , that where-ever the Tendons are Composite , that is to say , two joined together , one Composite Tendon may enter the middle fleshy parts , and the other surround the middle fleshy part on each side ; as most apparently is seen in the Muscle called the Masseter , the Deltoides , and some others ; in all which in like manner , as in the simple Muscle , two Fleshy Fibres ( to which alone the Motive Power belongs ) are contracted , and the opposite Angles , according to the insertion of the Tendons are inlarged , and thereupon the Ventricles becoming shorter , and at the same time grosser , rise into a Tumour . LXI . The Motion of the Muscles is made by the help of the Animal Spirits . These things thus briefly , and by the by explained , we infer that the motion of the Muscles is made in general , while the Animal Spirits , being swiftly moved , and like the parts of Flame shooting out from a Brand , being conveyed into the Muscle by the conduct of the Nerves , and there copiously laid up , as in their proper Promptuaries , and dilating themselves by their agility , enter into the Carne●us Fibres , and become inflate , because then the Muscle contracted and expanded in Latitude , draws that part into which it is inserted , towards the Head of the said Muscle ; but when the Spirits retire into another place , the contraction is at an end ; and the Muscle , formerly more contract , becomes longer , and is restored to its pristin position : So that the only cause of all the motions of the Members which are performed in an Animal is , because certain Muscles upon the Spirits emanation , are contracted , and those which answer them on the adverse part , by the departure of the said Spirits , are dilated and extended . LXII . How it comes to pass , that when one Muscle is contracted another is dilated , and so contrarywise . But if it be ask'd why this Muscle should be rather contracted , than those which are opposite to it , and all the Fleshy Fibres of one Muscle should be drawn into wrinkles , and be more tumid and rough than those of another ? I answer , that it so falls out , because more Spirits flow to this than to the other , so that they render it shorter , grosser and broader . Not that the Spirits which immediately proceed from the Brain , are sufficient to move these Muscles , but because they dispose other Spirits which are already in these two Muscles , to pass out of one of them into the other ; by which means that from which they pass becomes longer and more remiss ; and that which they enter into becoming soon inflate by them , is contracted , and draws along with it the Member to which it is knit , which may easily be conceived , as Cartesius observes , if it be but seriously considered , that there are but very few Animal Spirits which proceed from the Brain towards any one of the Muscles , but that there are always many others inclosed in that very Muscle , which Spirits are moved therein with a very swift motion . Sometimes by moving only circularly in the place wherein they are , that is , when they find no open ways to get out at , and sometimes by flowing into the opposite Muscle , because the Apertures are small in every one of these Muscles , by which the said Spirits may flow from one to the other , and are so disposed , that when as the Spirits which pass from the Brain towards one of them , have a little more force than those which pass towards the other , they open all those Orifices by which the Spirits of this may have a passage into the other , by which means all those Spirits formerly contained in these two Muscles , gain a very speedy Conflux into one of them , and so puff up and contract that , while the other is extended and remitted . LXIII . The Force and Efficacy of the Animal Spirits in moving the Muscles . And that Animal Spirits have this efficacy , is most evidently evinc'd from their agility and mobility ; forasmuch as in the twinkling of an Eye they pass through the whole Body ; and having in some sort obtained the Nature as it were of an immaterial Soul , are carried with a most wonderful swift force into the Muscles , and in a moment induce a change of Figure into the Members . Hence Galen in the 13 th Chapter of his First Book De Motu Musculorum , There is , saith he , in the Ventricle of the Brain , a Spirit , the first Instrument of the Soul , by which the Soul transmits both sense and motion through all parts of the Body . In the second place we see in our selves , that no action of Life is performed , but by the help of the Animal Spirits ; and hence it is that a Man having his Spirits exhausted , faints and languishes : Likewise hence it is that the passage of the Spirits being obstructed , the Apoplexy and Palsie , nay , the Epilepsie and Vertigo also arise : Also hence it is , that by a too intense study , the Head is debilitated , and a great dissipation of the Spirits follows . In like manner as in a vehement motion of Passion , there is a perturbation of the same . Thirdly , The influx of Animal Spirits is plainly represented to the Sense , by a Snail inclosed in a Glass Phial , as Henricus Regius observes ; for as soon as she begins to make her progress , first some , and then other Spirits with conspicuous Bubbles , are continually driven on from the Tail to the Mid Body , and thence to the Head ; but as soon as the said Snail stops her progress , and lies still , immediately the motion of the Bubbles from the Tail to the Head is also stop'd . Moreover , in the motion of the Snail there seems to be a certain circulation of Spirits , passing from the Tail by the Belly to the Head , and returning from the Head by the Back to the Tail , being thence again to take their progress as before . LXIV . How there should be so great a force in the Spir●ts , as to move the whole Body . Now if any one should object , that there seems not to be so great a force in the Animal Spirits as to be able to move the whole Body , since in regard they are the most subtile parts of the Blood , how should so great a force come to be in so very thin a matter as to stir up and down , not only the Leg or Arm of an Animal , but also to Move , Govern , Heave and Carry from one Place to another the whole Machin of the Body ? Who can be made to believe , that so great a Body as that of a Bull or Elephant can be impell'd by so thin a substance , and be disposed and excited to so swift a pace ; nay and sometimes to a kind of Dance ? I answer that this needs not seem strange at all , if we do but remember that the Animal Spirits have been already proved to be in the Nature of a most pure and subtile Flame , whose force appears no less in the Body of an Animal , than in Fire stirr'd up by Gunpowder , which being inclos'd in a Great Gun , or Piece of Ordnance , causes it , tho' a thing of that massy bulk and weight , to recoil a great way backward , and sometimes to burst ; and with that force to shoot out and drive into so swift a motion a weighty Bullet . Since therefore an Animal is a sort of Machin , and all its motions are Mechanically performed , it must act according to the manner of other Machins ; for example , Bars , Wedges , Scales , Pullies , Cranes , and the like , by which a small help or stress being added , things of great bulk and weight are lifted and remov'd . LXV . Twosorts of Bars which have an Analogy to the Organs of Motion in Animals . There are two sorts of that Engin they call Vectis , saith the most learned Gassendus , which because they draw up Burthens by Cords and Ropes , they have the more peculiar Analogy to the Organs of Motion in Animals , forasmuch as one of the principal Motions is attraction , which is made by Tendons , as it were by Cords : Of these two sorts of Vectis , the Trochlea or Pully , than which there is nothing more known , and Tympanum or Peritrochium which is also very much in use , that is to say , when the Axis or Cylinder being fixt to it at one end , and in another part sustained by two Props upon which it may be turned , it winds about it self the Cord fastned to it at one end , and drawing up the Burthen by the other , is turned round by Pegs fixt into it all about this Machin . The Latins call a Sucula , a Crane ; the Vulgar Tornus , a Torn . In the Trochlea , the Diameter of a small Orb supplies the place of the Vectis , which bearing upon a little immovable Axis as its Hypomoclion or Underpropper , obtains a power of pression in that end where the Cord prest by the Attractor , urges most ; and because the Burthen makes its stress upon no other extreme , but is tied to the uttermost Cord , it thence comes to pass that while that extreme gives way to the pressing power , or is lifted up ; that part also of the Cord to which the Burthen is tied , is at the same time lifted up , and another Diameter , that is , another Vectis or Bar , and after that another immediately succeeds , and thus the attraction or lifting up of the Burthen is brought about ; whereas in the Tympanum or Sucula , every Scutula or Peg is apparently a Vectis , in the extreme whereof the force is incumbent from the Hand , deducing or drawing down ; and whereas the Fulciment or Prop is allowed to be in the Cylinder it self , another extreme Fulciment must be allowed to be at the adverse part of the Cylinder , upon which in regard the Burthen makes no stress , but hangs upon the main Rope , it thence comes to pass , that while that gives way , the Rope , is wound about the Cylinder , and being still shortn'd as it winds , lifts up the weight , and this is continued by Pegs or Bars , continually succeeding one after another : Now in an Animal there are not indeed such things as Trochleae to be seen , but to supply their place , there are so many as it were Corrugations , by which the Tendons are contracted , and the Muscles , themselves abbreviated as to Longitude . So that from them proceeds as it were a certain Series of Trochleae , in imitation of the Polyspastic , whose force is wonderfully vast ; nor doth there appear any Circumduction or Winding about , in regard the revolved Tendon is shortned , neverthelss there is that which supplies the place thereof ; namely , the Contraction , and as it were Complication of the Tendon upon it self , by the help of the Animal Spirits ; whence it follows , that the part contracted comes nearer and nearer to the Head of the Muscle . LXVI . It is concluded that Animals are meer Automata . From this similitude of the Vectis with the Machin of an Animal , and from the manner by which we have above made out , that the functions of the Body are performed ; it is clear enough evinc'd , that there is no necessity of a Soul in Beasts , for the producing of a Pulse of the Heart or Arteries , the Concoction of Meats , Nutrition , Respiration and Procreation of Spirits ; but that they are produc'd without any Cogitation , and consequently that the parts of the Body in Animals are moved from place to place , in the nature of Pneumatick or Hydraulic Automata . LXVII . Whence the diversity of motions in Animals , if they have no Soul. This hinders not but that the motions which are performed by the help of the Muscles , and influx of Animal Spirits are various , and not always excited in Animals ; for example , that Beasts walk sometimes with a swift , sometimes with a slow pace , that they turn this way or that way , &c. Since this diversity of motions argues not any Cognition in them , as if they had any design in what they did or understood , what to Fly from , or what to Follow after , but because they are of such a Constitution and Fabrick that the Pores in their Brain are opened sometimes one way , sometime another , and their Spirits have a different influx into various Fibres , Nerves and Muscles , according as the Organs are moved by the Objects , and suggest manifold Species to them : For example , if a Dog be benum'd , or seis'd by Cold , or any bad Weather , seeing a Fire a far off , he makes haste to come to it , not induc'd by any other reason , but because such an Object as that opens the passages of the Brain which terminate in the Muscles of the Legs , and so the Animal Spirits are transmitted to them , which causes him to approach near the said Fire ; and being thus arrived , and finding the kind and grateful heat thereof ; there ariseth thereupon such a commotion of Spirits in the Brain , that immediately they direct their course into those Muscles , which is the cause that he makes his stay there and lays him down to repose and cherish his benummed Members ; but if it chance that when he is thus laid , and inclining to Sleep , the Fire should be over-hot and scorching , or a Spark should shoot out from a burning Coal , and leap upon his Skin and burn him , this agitation of the singeing heat immediately opens those Pores of the Brain which draw down to the Muscles of the Neck , Eyes and Feet , and attend their motions ; so as that he presently rouses himself , looks upon the Fire , and with a swift pace retires from it . Or if the Master of the House by chance , from abroad comes home , and comes in view of the Dog , immediately upon sight of him , the passages of his Brain are open'd , as by custom so disposed , in so much that he directs his course to his said Master , and testifying his joy by wagging his Tail , fawns upon him . But if a Stranger enters , whose Countenance and Habit of Body are unknown to him , his Aspect and unwonted Scent he brings along with him , stir up the Dog to a contrary motion , by opening those Muscles which attend upon his Barking-fit , and conduce to the warfare of his Teeth , and stirring up of his Anger ; so that all the motions which are performed by a Dog , are excited by Objects , which being received into the Sensories , dispose the Spirits to an Influx into several parts of the Body , which are adapted and conducible to move them , LXVIII . In Man also many motions are effected without the concurrence nay , against the consent of the Soul. The Peripateticks ought not to be troubled , that we attribute the motions of Animals to the disposition of their Organs only , and make out all their sensible actions without any help of the Soul , when as if they would seriously inspect into themselves , and consider well what is done within them , they would find the same thing altogether in themselves : For who is there that is not taught by experience , that various motions daily arise in his Body without any concurrence ; nay , oftentimes against the Will , and with the reluctance of the Soul ? In Convulsions or the Colick Passion some part of the Abdomen are twitch'd , whence an acute Pain arises , the Bellows are contracted , and the Navil is drawn in : Often-times the Intestines by an inverse motion of the Fibres , are pulled upwards , the Ureters and Urinary Vessels are so impelled one against the other , that in the whole Fit , Urin is either totally supprest , or is voided very sparingly and by drops : All this while no Man certainly will maintain , that the Soul connives at these motions , when he that suffers such grievous Maladies , cannot but most earnestly wish himself free ; and there is no Man but must vehemently complain of Pain during the Contraction , Inflation or Astriction . The same might be demonstrated in a world of other Examples , but let these few suffice , that we may not seem to dwell too long upon a thing perspicuous enough of it self . They that fall down from any high place , fall so that their Hands come first to the Earth , so as thereby to save the Head ; and this they do not any way consulting , but because the sight of the impendent fall , reaching to the Brain , directs the Animal Spirits into the Nerves in such a manner as is necessary to produce this motion , as it were in a Machin . Likewise if any one unexpectedly should hold up his Hand towards our Eyes , as it were offering to strike us , tho' we were sure of his Friendship , and well satisfied that he did it but in Jest , and designed nothing less than to do us a mischief , yet we should hardly refrain from shutting our Eyes : Which evidently shews , that this shutting of them is not any work or design of the Soul , since it is done against our Will , and our Will is the only , or at least principal action , but because the Machin of our Body is so compos'd , that the motion of the said Hand to our Eyes , excites another motion in our Brain , which draws down the Animal Spirits into those Muscles that let down and depress the Eye-lids . The same thing is to be supposed of other moiions of the Body , for upon the sight of any delicate or inticing Meat , not only the innermost Jaws are moved with a desire thereof ; but the Tongue and Palate being moistned with Spittle , cause a certain , as it were praemansion or fore ▪ chewing , as we may so call it : So that this sort of Meat is the occasion that the Spirits direct their course towards those Muscles which are inservient to the Jaws , Tongue and Palate , and contribute motion to them . The same is to be said of Itching and the Venereal Motions , which upon the sight of any Venereal Object , are excited in those parts that conduce to the performance of this Scene . LXIX . I● all the motions of the Body depended upon our Will there would be no Paralyticks . For doubtless if all the motions of our Body depended upon our Will , and we could govern our Members at pleasure , there would certainly be found no Paralyticks , or Persons troubled with a Palsie ; none deprived of motion all the Body over , or in any of its parts . Forasmuch as there is no Man , in whom there is not a Will to move his own Members , and free himself from that resolution or untying of the Nervous Parts which takes away Sense and Motion from him . Who would suffer the use of any of the parts of the Body to be taken from him , if it were in his power to open the Obstructed Passages , and make way for the Animal Spirits , by which they may be transmitted , and may influence , plump up and actuate with vigour the Nervous Parts ? LXX . There are also certain spontaneous Motions without Design or Will. Now there are not only Natural Motions which are performed in us without the help of our Knowledge or our Will ; but there are also a world of those which they call voluntary or spontaneous Motions , which are effected by the disposition only of the Machin of the Body , without any thought or design contributed thereunto by our Soul : For if , while we think upon any other thing , a spark of Fire chances to light upon our Hand , we presently start back with all imaginable swiftness , there needs no deliberation for so doing , our Will not being concerned in this motion , our Hand is drawn back before we can have so much as a thought thus to snatch it away . LXXI . Of motions made to hinder us from falling . If we have a mind to stoop for the taking up of any thing upon the Ground , we draw back one Leg , so to give us the better advantage to counterpoise the rest of the Body , which hereupon leans forward : If walking upon a dangerous path , we chance to slip , we immediately lift up that Arm which is opposite to the ●lace where our Body just before inclin'd upon its fall , and by this means we give a stop to the force of the fall , and sustain our selves the better , in regard the Arm , thus lifted up , keeps off its whole weight from the middle of the Body where the center is ; and by this enlightment gains sufficient force to counterpoise the rest of the Body which inclined on the other side ; as we see that in a Ballance , a small weight hung at a distance from the Center thereof , holds an aequilibrium against another far greater which is nearer the Center . LXXII . That motions proceed not from any Cognition or Knowledge ▪ And this we learn'd when we were but Infants , that weights far distant from the Center , have always so much the more force , and that the Arm lifted up hath the more power to sustain the weight of the Body when it begins to fall , and that the Center of gravity must be always under our Feet . But tho' we practise all these Rules with the same exactness as the most able Philosophers , all the reflexions we make upon the Laws of Motion and of Aequilibrium are useless and unprofitable in the Practick , and so far are these Sciences from being able to serve us upon any occasion , that they would be rather very prejudicial , were we minded to make use of them ; since certain it is , that we perform better all these motions when we think not on them , than when we are intent upon them . We must therefore of necessity acknowledge , that whatever is acted in us , is without our Knowledge ; at least that knowledge we have sometimes by reflexion , is not at all the cause , since these motions prevent us in our thoughts ; and these thoughts imployed about them , rather hinder than help us . If then these motions so regular , so proportioned to their performances , so conformable to the Laws and Rules of the most refined Philosophy , can be performed so effectually and to the purpose in Man without any Cognition or Knowledge , how comes it that Brutes act by Knowledge ? And why should it not rather be generally allowed what we maintain , that they are able to act by the disposition of the Machin of the Body only , according as we act by the like disposition of ours ? LXXIII . How improperly some Physitians speak , who attribute certain Passions to Nature . How unaptly and improperly do some Philosophers and Physitians speak , tho' seeming to utter great things , when with a Magisterial Countenance they pronounce that Nature abhors a Vacuum , and shews an aversion to what is disagreeable to her ; that a Medicin chooses what Humours to attract , and passes by and leaves untoucht others ; Nature disposes her self to a Crisis , as to a Combat ; that she indeavours to subdue or throw off the Hostile Matter of the Distemper , that being vanquish'd , she is reduc'd as it were to desperation , and as it were throws away , or lays down her Arms. By which ways of speaking , they do but fly to a pretty handsome way of concealing their ignorance ; and that they may not seem to be put to a nonplus , and have nothing to say , they attribute to occult Effects , some , tho' no less Cause . Because , since Appetite , Election , Will , Hatred , proceed from our Mind , and are no other than various modes of thinking ; we could not but be conscious of them , if they were found in us . But since we neither have a Will or Aversion to any of those things aforesaid , to which these motions tend , nay , are ignorant after what manner they are effected ; they must maintain that these sort of motions are not found in us , or if they are found , that they have the Body only , that is , the dispo●ition of the Organs , and influx of Animal Spirits for a Principle . Which how absurd it is to assert , no Man in his Senses can be ignorant , who knows that the Mind is distinguish'd from the Body , and that the ways of each are different one from the other . Otherwise what have we to do but to agree with the most Illustrious Verulam , That to all Bodies , of whatsoever quality , destitute of Sense , there is inherent a certain faculty of perception , if it be true , that when Body is applied to Body , there may be deprehended in them something very Analogous and Cognate to Election , in admitting things agreeable , and excluding or rejecting things ungrateful . What should we do , but allow Cognition to Plants , if some of them contract a friendship with others , and covet some parts of the Earth to harbour in more than others , and make choice to themselves of what Aliment is most agreable to them ? And if others on the contrary fly so much as the touch of Neighbouring Plants , are pleased with a sandy or a plashy Soil , one more than the other ; and several of them have an abhorrence , some of Cold , some of overmuch Heat ? What should hinder us from believing that the Stomach is indued with Understanding , if it discerns what is hurtful , from what is wholesome , and hath an Appetite to things only agreeable to it , and having taken Poison , is provoked to Vomit ? For these actions belong to the Soul , and that thing must needs be indued with Cogitation , which loves and makes choice , which hath an aversion , which hath an abhorrence , which is delighted with one thing more than another , and hath an Appetite : So that I can by no means agree with the most Famous Harvey in his Opinion , that all parts of the Body , which by their own motion strive against provocation and injuries , injoy a certain sense by which they are impelled to motion , and consequently that the motions and actions which the Physitians call Natural , are not performed without Sense ; and that there is a certain Latent Sense , by which they are excited , provok'd and altered ; for were it so , we must consequently acknowledge that the palpitation of the Heart , trembling , fainting fits , swooning fits and alterations of the Pulse in Magnitude , Celerity , Order or Harmony which proceed from Morbifick Causes , altering and hurting the Sense , are indued with Sense . LXXIV . Nor less improperly they who attribute Sense to Brutes . Nor am I more inclinable to the Opinion of the Peripateticks , who attribute Sense to Brute Animals , and are perswaded that they See , Hear , Smell , &c. in the same manner as we do ; which certainly no Man will allow , who forms to himself a true Idea of Sense , and hath attain'd so much Judgment as to understand what is included in the Notion or Conception of it ; forasmuch as Sense is not distinguished from Cogitation , and is applicable to a thing Spiritual only and Incorporeal , from which it cannot be separated . Hence Hippocrates in his Sixth Aphorism , and Second Section , They , who being agrieved in any part of the Body , yet feel no pain , their Mind is certainly sick . If therefore they are not sensible when the Mind is sick , so as not to be intent upon the Organs of the Senses , much less can any other Creature be sensible of those things which beat upon the Sense less violently , unless the Mina be present ; as we also find by experience in our selves . For it very often happens , that we run over with our Eyes the Letters of any Writing , and that our Ears are smitten with the sound of Words , tho' we neither understand nor perceive either the one or the other , because our Mind is set upon certain things , each of which nevertheless afterwards returns , and is represented to our Cogitation : If therefore Men who are indued with Mind , when they attend not , but are imployed elsewhere , are not sensible , much less can Animals be sensible , who are Senseless and destitute of Mind . So that Plutarch rightly concludes in his Book De Sagacitate Animalium , Mentem tantum videre & intelligere , &c. That the Mind only sees and understands , and that all things else are surd and blind , in regard the passion of the Eyes and Ears , when they are smitten by Objects , stirs up no Sense , if the Cogitation of the Mind be absent . LXXV . Aristotle's Opinion , that Mind only is sensible . Nor do Aristotles own words , Section II. Problem 33. make less for our business ; for the Philosopher having made an inquiry , why Night is more accommodated for hearing than Day , after he had quoted Anaxagoras his Opinion , who judged the reason to be because the Air in the Day time , heated by the Sun , hisses and makes a Noise , but by Night is silent and at rest , the heat being then gon ; goes on with his Discourse in these words , Quonians Corpora interdiu , &c. because Bodies by Day , variously divide and disperse the force of Understanding , and put it upon divers operations , so that the sense of hearing plain is taken away ; and by reason we act and manage all things more by Day than by Night , the Intelligence it self is hindred and interrupted by the affairs of the Body : But Sense when it is separated from Intelligence , is upon , as it were , an insensible work ; whence that saying , Mens videt , Mens audit , the Mind sees , the Mind hears ; that is , perceives Objects which smite the Organs of the Body , for no other things are thus perceived by the Mind ; whence it follows necessarily , that those things which are void of Mind , are also destitute of Sense . LXXVI . The Vulgar Objection to shew that there is Sense in Animals . But some will start up , and cry out against this Opinion as Cruel , and will call it the utter extirpation of Animals . What , will they say , will you deprive all Animals , not only of Intelligence , but also of all Sense ? O Barbarity ! What can be more oppugnant to Experience , and the common Opinion of all Men ? Do we not daily behold Beasts coming nearer and nearer to perfection , looking seriously upon visible Objects , and receiving sounds in at their Ears , by which sounds they are excited to Labour , to the running of Races , to Meat , to Drink , and other such like actions ? who knows not that a Cat , Dog or Ape distinguish their Food by smelling , and hunt after that which is agreeable and grateful , and fly and eschew that which is ungrateful and noxious ? How can it be that a Spider , sitting in the midst of his Web , can feel when a Fly is intangled in the remotest part , and yet be destitute of the Sense of Touching ? LXXVI . Sense is to be distinguished by three degrees . Our business therefore is to shew , for what reason we exclude Sense from Beasts ; and how it comes to pass , that they have Eyes , yet see not ; are provided with Ears , yet perceive no sounds ; are not without a Nose , yet smell not ; have the use of a Tongue , yet discern nothing by any different relish or Savour ; which the better to effect , we propose a thing Note-worthy ; that our Sense is to be distinguish'd into three degrees . The first degree contains that simple motion which the Object impresses upon the Nerves , or that whereby the Organ of the Body is immediately affected by external Objects , which can be nothing else but the agitation of the particles of the said Organ , the change of Figure and situation proceeding from this agitation : For Sense consists in Motion , and as Aristotle asserts in his Third Book , De Animalibus , Chap. 13. no motion can be had without contact . So that a Corporeal Organ must needs be touch'd after a Corporeal manner , and motton must needs be imprest upon sensible things . When , I say , that the motion of an Object is imprest upon a Corporeal Organ , I would not have it understood that the motion , for example , of the Eye , is only made there , but that it passes up to the Brain , from whence the Fibres of the Nerves , like Lutestrings in a Lute , are stretcht out to other Members . The Second Degree contains Perception , which is tied to that motion , whenever this impression is carried to the Pineal Glandule , or seat of the Soul. Such are the perceptions of Pain , Titillation , Thirst , Hunger , Heat , Sound , Savour , and the like ; which , we say , arise from the substantial Union of the Soul with the Body . The Third contains all those Judgments which attend those Perceptions , that is to say , those Judgments which , from the very first we have ever used to make of things without us upon occasion of the motions of a Corporeal Organ . Or to comprehend these three Degrees of Sense in fewer words . The first Degree is the affection or motion of a Corporeal Organ : The second the perception of that impression which is proper to a Corporeal Organ : The third the determination of Judgment to affirm , or deny any thing . And still to render the matter a little more plain , when any one beholds , for example , the Moon , the Corporeal Organ , that is to say , the Eye is moved , or affected by the Light which is reflected by the Lunar Body ; and herein consists the first Degree : The Mind presently perceives the Light or Colour , and this is the effect of the second Degree . Moreover the Mind assigns Colour to the Moon , that is , delivers its Judgment , as asserting that the Moon is coloured , and this is the result of the third Degree . LXXVIII . How Sense may be applied to Brutes . These things thus premised , it manifestly follows , that Animals are void of Sense , properly so call'd , unless we admit for Sense , that Corporeal Motion which preceeds Perception , and hath reference to it , as to something begun and imperfect . For it is of Corporeal Motion only that Animals are capable ; nor do we deprehend any thing to be in them , which can persuade us that they are sensible , if the word Sense be taken for any other than the impression of the external Object upon the Organ of the Senses : So that those persons that think the motion of a Corporeal Organ deserves the name of Sense , are no less absurdly persuaded , than they who maintain that the Optick Cubicle sees while it receives the Species of external Objects , and represents things done without . That the Eye of a slain Ox sees wherein all things are distinctly delineated , no less in than the Retin or Network Tunicle of a surviving Ox. That Men see , who , like Hares sleep with their Eyes open ; and cannot be discern'd to be awake , any otherwise than by the loosning of their Eyelids . When as the Optick Chamber , the Eye of the dead Ox , the Retin Tunicle of a sleeping Person , receive the Species of external things ; and in the same manner as they represent the Picture of Objects : So that if Corporeal Motion be allowed to injoy the name of Sense ; by the same force of Reason it may be inferr'd , that it may be attributed to Inanimate Things . LXXIX . Sense consists not in the motion of a Corporeal Organ , but in Perception . But I can easily imagin what may be objected against this Ratiocination ; namely , that a Body is the Instrument of Sense , whose action must needs intervene to our Sensations , and consequently that for producing of Sense , there is required an Organ disposed after a certain manner ; that is to say , into which the Animal Spirits may flow , and whose motion may reach up to the Brain , which without motion cannot be done . All these Conditions I willingly grant , and I confess it is requisite for the making of us sensible , that an Organ be modified by certain dispositions ; but I only insist , that neither the action of an external Object , by which the Organ is moved and disposed ; nor the mutation of Figure and Situation , which promotes that Action ; nor that transmission which is made to the Brain , are Senses or Apprehensions ; but that which immediately results in the Mind , which is joined to the Corporeal Organ , so disposed : For how can that saying of the Prophet Isaiah be understood , In hearing ye shall hear , and shall not understand ; and seeing ye shall see , and shall not discern : Unless the first degree be supposed to be distinguished from the Second , and that Corporeal Motion may be disjoined from Perception , or attention of Mind . LXXX . Corporeal Motion may be had without Sense . But what need is there to have recourse to Holy Scripture , to prove Perception to belong to the essence of Sense ; and that the work of the Mind is required to be concerned , when we are said to hear , see , smell , &c. since we find it not seldom by experience in us , as namely when the Mind being very much taken up in contemplating other things , a Man may pass by us , and not be taken notice of , tho' our Eyes be open , and directed towards him , there being no obstacle in the way to hinder ; and so likewise not observe his Speech , tho' our Ears be open , and immediately take in sound ; We may also not taste the relish of Meat , tho' the Fibres of the Tongue be smitten by the Corpuscles of the Meat ; and the whole plexure of the Organ be never so clean , and void of all clog or impediment : Lastly , we may be exempted from the pain of Cold , tho' in a rigid Climat , and the Air ready to freez , through the bitterness of the weather . All which things sufficiently prove , that not the Members or Organs , but the Mind only do see , hear , taste and feel . LXXXI . How those are mistaken , who from external actions judge Brutes to be sensible as we are . Whence it is apparent how foolishly those persons reason , who because they observe Brute Animals to be mov'd by the Species of external things , and to feed as Men do on Meats offer'd them , to be affected with sounds , to be taken with the aspect of some Objects , and frighted with that of others , presently infer that Beasts also are sensible ; that is , that they think and give attention to any thing that is offered ; whereas indeed all those motions in Animals are performed without any concurrence of the Soul , and only effected by a blind impulse of Organs and Animal Spirits . This error hath grown up with us from our Infancy , as Claubergius observes in his Prolegomena Logicae , by reason that at that time , and in that very moment , in which our Corporeal Organs were moved by external things , the Mind joined to the Body had still a perception of some thing , and so we taking both for one , attribute perception to the Corporeal Organs of the Senses ; which the Wise attribute only to the Intellect or Understanding . Hence we say generally by way of familiar speech , that the Eye sees , that the Ear hears , that the Tongue tastes , that the Nose smells , that the Hand feels ; nay , which is more because whilst the Body was affected with external things , the Mind also perceived something , and thereupon presently made a judgment of something ; hence we ascribe estimation and judgment to Corporeal Organs , to which nevertheless the Philosopher knew well enough that Body is not desired , but that besides the apprehension of the Intellect , the assent of the Will is also required . For just as it often happens in other things , so doth it also in these Acts of Understanding , Imagination , Perception and Judgment , namely that they are often taken one for the other , and confounded together , and only for this reason , because they exist together at the same time . So because whilst the Eye is moved by the Light , the Mind also joined to the Body perceives something , and at the same time judges ; therefore these three different things , viz. the motion of the Body , the perception of the Mind , and the judgment , are all taken by the Vulgar for one and the same thing , and are all exprest by that one term of Seeing , as when they say I see the Sun. But the Wise are far above this manner of speaking , as well knowing the difference between that which , in our sensations belongs to Body , and that which belongs to Mind ; for the motion which an external Object impresseth , and the mutation of Organ belongs indeed to Body ; but it comprehends no Perception or Cogitation which is proper to the Mind , and from which it cannot be separated . LXXXII . According to Plato there is no Sense but from the Soul. This Opinion Divine Plato maintains in Marsilius Ficinus , in his Argument against Thetaetus : We must note , saith FICINUS , that Plato allows no Cognition to Body , as likewise no Life : That which lives , is sensible ; the Soul lives , and the Soul is sensible ; but in the Body there is neither Life nor Sense ; yet the works of Life and Sense are visible in it . So that those which some call the Five Senses , he will have to be called the Five Organs of Sense , and asserts that nothing hath any sensibility by these Instruments , but that through these , as it were , passages , each part of Sense is performed by one certain force of the Soul , which operation he calls the Common Sense ; into which various passions have influx as Lines from the circumference to the Centre of a Circle . Colours , through the Eyes ; Sounds , through the Ears ; Odours , through the Nose ; Savours , through the Tongue : Lastly , heat , cold , moist , dry , grave , light , soft , hard , smooth , rough , rare , dense , acute and obtuse , through the whole Body . That this Soul is sensible , not by many , but by one power , is apparent , since when we feel heat , we do not give this Sense the appellation of Voice ; nor when we perceive any thing of a Savour , do we call it Odour . He cannot distinguish one thing from another , who knows not both . No one Organ performs the same things as another doth ; or if the same things , not in the same manner ; so that the distinction of those things which are perceived is not in the Organs , but in one certain power of the Soul , perceiving each thing , and distinguishing all things one from another . All which , since the Soul alone is able to effect , as the Peripateticks themselves cannot deny , what need is there of many Senses . LXXXIII . Corporeal Organs perceive nothing . From which words of Plato , we may thus argue : If Sense resided in a Corporeal Organ , it might be said the Eye sees , or the Ear hears ; but according to Plato's Opinion , neither the Ear hears , nor the Eye sees ; nay in the Body , there is neither Life nor Sense ; only by it the works of Life and Sense are made to appear : And it is the Soul as Marsilius saith in another place , which is in pain or rejoiceth , not the bulk of the Body ; consequently there is no Sense in a Corporeal Organ . From hence also it is clearly to be deduc'd , that Brutes , since they are void of Mind , and have nothing but Corporeal Motion , do not , for example , see like us , that is , as being sensible , or taking notice that they see , but only as we do when our Mind is elsewhere imployed , or called aside , tho' the Images of external Objects are painted in our Retin Tunicle , and perhaps also their impressions being made in the Optick Nerves , dispose our Members to different motions ; yet nevertheless we perceive nothing of them : In which case it appears also , that we are moved no otherwise than as Automata , as hath been already declared by several Examples . LXXXIV . For what reason Animals are said to have five Senses . Wherefore if all the Freaks of the Brain , and all the motions of the Animal Spirits , which are caused by the Nerves , must needs be called Senses ; it may be said that Animals have five exterior Senses , because there are five sorts of Nerves which convey the impressions of Objects to the Brain , and which dispose the Animal Spirits to insinuate divers ways into the Muscles , for the moving of the Members : Hence it is , for example , that Animals are said to see , when the Light enlightens the Optick Nerves , and by them the parts of the Brain , from whence they have their Original ; that they hear when the Air which hath been smitten by any resounding Body , strikes upon the Nerves , which terminate in the Ears : That they taste when the particles of the Viands which they chewed , have force enough to enter the pores of the Tongue , and so excite the Nerves : That they smell when the most subtile parts of the Body which they inviron , being mingled with the Air , which causes Respiration , hit against the Nerves that terminate in the Nose ; and that there is simply a Sense of Feeling , when any exteriour object is immediately applied to some part of their Body , and have force enough to agitate the Nerves which there terminate . It is said likewise that they have Sense of Pain when the agitation of the Nerves is very violent , and that they have relaxation of Pain , when this agitation is indifferent ; but all these sentiments are nothing else but the power which the Animal Spirits have to be disposed by the presence of Objects , to pass through the Brain , and through the Nerves into some certain Muscles rather than others ; and by consequence that there are no Senses but according to the first degree , that is to say , that they have none but Corporeal Motions . LXXXV . Dr. Willis his Opinion about the Cognition of Brutes . The Famous Dr. WILLIS in his Exercitation concerning the Soul of Brutes , where he acknowledges a Corporeal Soul in Brute Animals , and fancies it to be of an igneous or fiery Nature , and of kin to flame , thinks it no absurd thing that there should be allowed in Animals , a power to speculate and discern the Images of sensible things delineated in the Brain , and to draw forth , according to the impressions there conceived , Appetites and respective Acts of other Faculties . In regard tho' the Soul and Body , taken apart may not have the same power ; yet this hinders not , but that from a certain Law of the Creation , as he calls it , or Institution of Almighty GOD , an animated Body may be so disposed , that from Soul and Body joined together , there may result a confluence of such sort of faculties , as shall be needful for every Animal , for the ends and uses designed it . In many things framed by Human Art , the Workmanship hath exceeded the Materials , as who would think that of Iron and Brass , the most fixt and unactive of Metals , an Instrument should be composed , whose Orbs imitating the Coelestial Orbs , should observe motions little differing from perpetual , whose periods renewed by a constant vicissitude should most certainly measure the spaces of Times ? No wonder that from a Wind blown into a Pipe , a rude and simple Sound should be produc'd , but that from a Breath infused into Musical Organs , and so variously transmitted through manifold apertures of Valves , or stops into such and such Pipes , a most grateful harmony should arise ; this , I say , we cannot but admire , and confess withall , that this effect far exceeds , as well the matter of the Instrument , as the Hand of the Musitian playing , tho' the Musical Organ require for the most part the skill of the said Artist , by whose direction the Breath admitted , now into some , now into other Pipes , performs manifold Harmonies , and almost an infinite variety of Moods . So in some Brutes of the more perfect kind , whose Actions are ordained for many and more noble uses , there ought to be attributed a certain faculty , that is , the Brutal Soul it self , naturally so endowed , as to be rendred knowing and active about some things necessary for it , by various accidents with which it uses daily to be affected , and afterwards is taught to know other things , and to exert far more , and more difficult Actions , LXXXVI . Dr. Willis his Opinion concerning the knowledge of Brutes discust . This similitude I easily admit , as from which much Light is added to the foresaid Reasons , demonstrating , that Brutes are meerly Machins , which act according to the Laws ordained by the Creator , and after the manner of a Musical Instrument , which by a touch or breath infused , produces most admirable Harmony : Forasmuch as by the circuit of the Blood through the whole Body , they effect all their motions . But still I am not able to comprehend how from the union of two material , and consequently insensible substances , sense and perception should arise : For however in Machins the Matter is exceeded by Art , and from the mixture of divers Metals Instruments are framed for wonderful performances , yet this argues not that Matter can ever be brought to that perfection , as to be apprehensive of things that occur to them , and to be sensible that they apprehend them . But suppose that by a certain Law of the Creator , there may be attributed to a Body instructed with Organs , and designed for certain uses , some power of sensibility , which cannot belong to Body , nor Soul taken apart , but only to a compound resulting from both . Yet by the leave of this most Learned Man , I would gladly know what that Principle of Sensibility is , whether some substantial Mode , by which a thing Animate is differenc'd from a thing Inanimate and insensible , by the access whereof an Animal is constituted ? But nothing is found in an Animal , which can distinguish it from things Inanimate , excepting the Blood , which by an incessant Motion , is impelled into the Veins and Arteries , to nourish the parts of the Body . Now what activity is there in the Blood that it should impart sensibility to the Body ? Is there haply a certain Universal Soul coaevous to Matter , which actuates it , and brings it to perfection , according to its various dispositions ? This being granted , who will not see a necessity , that then not only Animals , but Plants also and Stones must have Sense : Forasmuch as that active and Energetick Power , by the same right may as well be infused into them by the great Founder of Nature ; or is it some Principle Emerging from Soul and Body joined ; by which an Animal is rendred capable of knowing the impressions of Objects ? Surely whatever this Principle may be fancied to be , since it must need be Material and Extense , it cannot be indued with the power of Acting , Thinking , Perceiving and giving Intention . For it is not to be understood , how from insensible things , another thing should arise which is sensible , and perceptive ? By what means a corporeal thing should produce spiritual Acts ; and that which is extense , should bring forth that which is void of all extension ? LXXXVII . The Idea of Local Motion is something distinct from the Idea of Cognition . But if this most famous Author , while he allows a Principle of Cognition is nothing else but the reception of a material Species , or a various motion of some interiour part of the Brain , we give our Hand and subscribe to his Judgment ; since we acknowledge and confess , that these sorts of different motions in Brutes are affected by various impressions of Objects . But we can by no means be induc'd to grant , that the Idea of Local Motion agrees with the Idea of Cognition , or that the Perception and the Motion of a Corporeal Organ are not distinguish'd from each other , in regard since Body and Mind are totally different in their kind , and the distinction which is between the mode of one Substance , and the mode of another Substance , is real ; it must needs be that the difference between Perception and the Motion of a Corporeal Organ is equal , and consequently that they cannot both proceed from the same Principle . LXXXVIII If Brutes should have Knowledge , they would exceed Men in Perfection . Haply , for this cause some of the more Modern Philosophers deny rationality and discourse to Brutes , as being inconsistent with Material Organs , since they judge Beasts uncapable of beholding any thing with reflection ; yet cannot persuade themselves , that they do not perceive , so long as they behold Objects . What , say they , shall they behold Objects with their Eyes , receive Sounds into their Ears , and yet not conceive these different Species or Images painted in some part of the Brain ? What should hinder , but that as there is allowed a double Memory , one Sensitive the other Intellectual ; so in like manner , there may be supposed one Sensitive Perception , another Intellectual ? To this , besides what hath been already urged in some former parts of this Discourse , there needs no other answer , but to affirm , that by admitting such a Perception in Brutes , they grant them a degree of Perfection equal to that of Men , if not greater : For wherein do they imagin Sense to be distinguish'd from Reason ? Doubtless herein the Cognition is apprehensive of Sense , and simple , therefore not obnoxious to falsity : whereas the Cognition of Reason is a little more Composite ; and it may be made out by the conclusions of Syllogisms , that it seems no way to argue a greater perfection , especially since they affirm the Cognitions of GOD and of Angels to be most simple , and only intuitive or apprehensive , and perplex'd by no intricacies of Discourses ; so that by them , if we may so say , the Sense of Animals comes nearer to the Cognition of GOD , and of Angels , than Human Reason . There is a Sensitive Memory to be found in Beasts . As to the Sensitive Memory , or memory of material things , we easily allow it to Beasts , since it is fixt to a Corporeal Organ , and depends upon the Vestigia or footsteps remaining in the Brain after some Image had been imprest upon it ; forasmuch as those Vestigia are no other , as I have at large made out in my Institution of Philosophy , than certain Paths , which the course of the Animal Spirits hath left among the Fibres of the Brain , through which at first they passed , in the same manner as folds in Paper or Linnen render the said Paper or Linnen the more apt to readmit the same folds as before , I say more apt than if no folds had been made there ; whereby it comes to pass , that the Fibres of the Brain are indued with a Power of attracting and disposing the Spirits ; so that the next time they may have egress through the same Vestigia , in the same manner as they had egress the first time . So that this sort of sensitive memory , consists in the disposition of the parts of the Brain , induc'd from the Objects through the Senses . Which disposition , if it happen to be inverted , or destroy'd , the Memory immediately must of necessity be either weakned or utterly perish : As may be proved by many examples in those , who either by the blow of a Stone , or by the sharpness of some Distemper , or by a fall from a high place , have lost the use of their Memory , forgetting all those things which they knew before . See the Natural History , the last Part. Nay some there are who have had the Vestigia of their Brain so far disturb'd by the overmuch taking of Tobbacco , as to abolish all signs of things , and to overthrow the Characters long since there imprest . Whence it is plain that the Memory is a Corporeal Faculty , which by the Vestigia which it conserves from the Species of Objects , hath a power of exciting those Images anew , and of procreating the Idea's of things formerly done . XC . Divers Brutes are void of the Intellective Memory . Nothing therefore hinders , but that Animals may remember , And mindful Goats unto their Huts return . ( as Virgil hath it in his Georgicks ) while the Images of Corporeal Objects recur in the same order as they entred the Loculi or Cells of the Brain , and stir up the same kind of motion in their Nerves . Yet all this while they do not perceive that they remember , nor do they , neglecting other things , make any choice of what they chiefly have need of , nor search after new things , nor call to mind former configurations , but act after the manner of Minstrels , who play upon the Harp , touch the Chords , and produce various sorts of Harmony ; without any care or heed to what they are about . So the Dog Argus knew , and fawned upon Ulisses after his twenty years travel . So the Birds flying out of their Neasts for food into the Woods , return from a far off : So Fishes upon signs given , run to the Meat thrown them in their Ponds and Lakes , and afterwards retire to their holes : So the Wild Beasts return each to their Dens , tho' far apart , and by their Scent find out their way when-ever they chance to lose it . Because the Animal Spirits , finding the pores of the Brain through which they formerly began their course , enter them more easily than others , by which means they excite a special motion in the Glandula Pinealis , whereby the same Object is again represented to them ; haply for want of these Vestigia , the Tucani are indued with little or no memory , in so much that going out of their Den , they know not the way in again , but are forc'd to dig another to repose in . The Second Part. A DISSERTATION Of the want of SENSE AND KNOWLEDGE IN BRUTES . I. The order of things to be declared in the Second part of this Dissertation . ALTHO' it hath been made out by Reasons strong enough , that Brute Animals are destitute of Sense and Perception , and that nothing of Cognition is to be discern'd in their Operations , and consequently , that a well-contrived Structure of the Members , and a precise direction of Animal Spirits through certain Passages , must needs be the Principle of all their Actions ; yet in all this we cannot pretend to have done any thing to the purpose , unless we descend to particulars , and make it appear , that all the Actions of Animals may be mechanically demonstrated , and that the motions which we think proceed from a certain Soul in Beasts , are of kin to those which are produc'd in Automata , by virtue of a Spring , and disposition of Wheels . It is indeed a difficult Labour , yet nenertheless necessary to be undertaken , if we intend to bring the Work begun to its desired end , and make a solid superstructure to the foundations we have laid : But the better to observe a certain Order and Method in this Second Part of this Dissertation ; we judge it expedient to reduce all the Operations of Brutes into Five Classes or Ranks . The First of them is those which are inbred in Beasts , to the exercise whereof they are carried by a certain innate force . The Second is of some Actions , which argue a sort of Craft in them , and bear some signs or semblance of Intellect , Judgment and Discourse . The Third is of those which insinuate the docility of Animals , and their aptitude to be instructed ; implying that something of Reason shines in them as well as in us . The Fourth is of Actions , which discover a kind of Mutual Speech in Animals , and which seem to make a kind of necessity of allowing the use of Language common with us . The Fifth and Last is of some Actions , by which Animals seem to excel the cunning and sagacity of Men , and that there is peculiar to them a Providence , and Foreknowledge of things to come , above what falls to Mans share and lot to be indued with . II. Some Operations of Beasts produc'd by Natural Instinct . As to the First it is evident , that there are Actions proper to every Species of Beasts , and that they are so determined to certain Operations ; that they all design and perform the same thing without any difference . CAMELS fly from pure Streams , and hunt after muddy and troubled Waters , in so much that when ever they go into a River to drink , if the Water be not muddy , they raise the Mud by a vehement scraping on the Ground with their Feet . CONIES continually dig themselves Burrows to lodge , and cover them with Sand , that they may not lie open , and be exposed to the rapines of the Ferrets . HARTS shot in their Side with a Dart , presently seek after the Herb Dittany for the curing of their Wound , and expelling the Pain with which they are afflicted . If the Root of Valerian be thrown before CATS , they run to catch it , they lick it , make much of it , and like Persons Dancing and Skipping , they run about and discover many signs of Joy and Pleasure . A HEN at the sight of a Kite makes a clocking , and as it were exhorting her Chickens to flight , she still advances her Voice , and calls them under her Wings . III. The same Nature is in all Animals of the same Species The cause of all these Actions can be referred to nothing else but Natural Inclination and Instinct , by which Animals are instigated to such and such motions , and resolve upon what things are convenient for them : So that this , or that whole Brutal Species is carried with one propension , and there is the same force , and the same impulse found in all of that Kind . So every HARE is a like fearful , and by the method of subtilty declines all Dangers and Inconveniences of Life . Every HOUND hath a kind of Craft and Innate Industry in following after Wild Beasts . All FOXES are shrewdly cunning , and generally use the same sort of Art and Method in laying Snares for Birds . Every APE expresses human gestures , and with one and the same sort of imitation receives whatsoever is offered or comes in its way ; whence it is evident that nothing of Reason is concern'd in any of these actions , but that Brutes are impelled to them by a certain necessity , and according to that familiar saying in Schools , they rather suffer than act . For how can a CAMEL know that a draught of Water , the purer it is , the more it causes the Gripes of the Belly in him ; or that in regard of the simplicity of its Substance , it affords him the less nourishment ? How knows a CONY that the Ferrets lay ambuscadoes for them , and that if they did not cover their Hole to keep them out , they should be expelled themselves by the injury of their Teeth and Feet , and whatever hostility besides ? How should a HART know that the Herb Dittany is available for the drawing out of a D●●● shot into his Side ? A HEN , that a Kite lays wait for her Chickens to snatch them away and devour them ? Certainly if they did , Beasts would be wiser than Men , as having the faculty to explore and find out things before they came to make trial , or have experience of them ; and being able to understand occurrences , before they could arrive at the Organs of their Senses . For BEES , we see , scarcely brought forth into the Light , begin to build Hony-Combs , gather Hony , attend their King , and perform all the Offices of their little Commonwealth . Young ANTS testifie no less providence than those of more age . CHICKENS newly hatch'd out of the Shell , dread and avoid the Kite . The Kite by no other Instructor but natural Instinct , lays wait for the Hen. The WOLF from his very Cradle , if we may so say , with an innate hostility prosecutes the Sheep . The SWALLOW builds and covers its Neast : The SPIDER its Web , without any other Teacher but natural Instinct . By which it is plain , that Animals are not directed by Reason , but by the Conduct of Nature only , which is alike prevalent in all . IV. That Beasts of every Kind cannot but do actions which are proper to them . And for the better conceiving that Beasts of every Kind ought to perform Actions which are proper to them , we need but consider , that they act no otherwise but by the force of their Mechanism or Structure , and by the disposition of their Organs : For as we ought to believe , that they are destin'd to different uses , according to the diversity of their Species , so we need not doubt on the other side , but that the Author of Nature hath furnish'd every one of them with Organs proper for the performance of those functions which are most agreeable to their Nature ; as for example , there are in Ants , motions very regular and very necessary to lead them in Summer time , to those Objects which they have need to make provision of against the Winter . Swallows build their Neasts with more artifice than the skilfullest of Men can do : And a Dog in finding out his Master shews more sagacity than in matters of that nature is usually discerned in Man. V. After what manner Bees make their Cells so ingen●ously . Moreover there occur to us some Works of Nature , which seem not possible to be performed without Sense and Reason , as hath been observed in the beginning of this Discourse : For how comes it to pass that Spiders weave their Webs so Geometrically , and Bees compose their Cells so neatly and orderly , each being appointed their several Offices ; some to lay up the Hony , others to exclude the Drones ? To which end they make some of their Cells oblong , the better to receive the forms of their Bodies ; and on the other side make them open to leave egress and regress , yet at the same time it is so ordered , that not above two rows of Cells can be opposite one to the other , namely , one at the top , and the other at the occluded part . Besides , when in framing the Walls of their Cells , there is a necessity that the Wax be separated , and carried out from all parts : How do the Bees so contrive it , that every Bee taking its round with comprest Wings , six other Cells should be drawn circularly near the Wax-Cell towards the sides , and as many towards the top , and all for the convenience of the circular Figure ; which is so ordered as to be touch'd by six , other equal and conformable Cells : Furthermore , there must be a Hexagonic or Sixangled , and a Hexaedric or six-sided Figure , conformable as well at the Sides as at the Top , in such manner , as while six Circles are contiguous about a seventh , and make a compression , this compression is to be mutual so far as till it falls into six Sides , equal to a Semidiameter , and common as well to the containing as the contained Circles . VI. The whole operation of Bees proceeds not from Reason , but instinct of Nature . But these and the like Operations are not to be attributed properly to Cognition or Cogitation , but to some other intelligence , which Averroes calls Non Errant : So as that the Corporeal Nature must follow the conduct of Divine Reason ; and its Works be look'd upon as Darts or Arrows which are directed by a skilful Marksman , to the Aim or Mark which the Darts or Arrows themselves have no suspicion or apprehension of . So that this Natural Force infused into every Animal , is the Original , and as it were the Source of all those Motions and admirable Effects , which do not only exceed all our Efforts , but which we can hardly attain to by our greatest application of Wit and Ingenuity : Whence the Great DESCARTES in his 45 th Epistle to a certain Nobleman , I am not ignorant ( saith he ) that many things are performed by Brutes , far better than by us ; but this I do not in the least wonder at , since it helps to prove that they perform them Naturally and as it were by Springs ; no otherwise than a Clock or Dial , which declares the Hours far better than we can find it out by our exactest Judgment : And doubtless when the Swallows approach in Spring time , they act therein in the manner of Clocks or Dials : And whatsoever Bees perform , is of the same nature , as is also the Order which Cranes observe in flying , Apes in fighting ; if at least they observe any . Lastly , the instinct by which they are carried to bury their Dead , hath nothing more to be wondred at , than the instinct of Dogs and Cats , who , going about to cover their Excrements , scrape up the Earth in order thereunto , tho' perhaps they never proceed so far as to cover them ; which shews that they act unthinking , and only by instinct . But if after all this any one still remains obstinate , and will have it that Intellect and Reason must be allowed in Beasts to produce all those wonderful Operations ; what hinders but that whatsoever things in Nature give occasion of admiration , may be said to proceed from Reason ? Why may we not by the same reason maintain , that a Clock or Dial is indued with Intellect , as long as the Index , turning about by a Spring of Motion infixt , sometimes by a deflux of Water , sometimes by the stress of a Weight hung on , sometimes turned about by the reflex of an intorted Steel , designs the Hours ? Why may not the Needle be said to be prompted by Reason to fly to the adjacent Loadstone , for the obtaining of its imbraces ? The Bees therefore erect their Habitations , as HARVEY admirably expresseth it , by a Natural impulse , and as it were by a fatal necessity , or a certain mandate , working according to the Law of the Creator , but act nothing by Providence , Design or Councel . For what in us is the Principle of Artifical Operations , and is called Art , Intellect or Providence ; that in these Natural Works is meer Nature , depending upon no Mans Instruction . VII . Whence ariseth the diversity of Actions in Brutes . But if it be required , how it comes to pass that so great a diversity of actions should be produc'd among Beasts ? How each Animal should have its proper Machination , if they operate according to inbred impressions , and are impelled as it were by a certain weight ? I answer , that this happens from the various disposition of the Brain , and the Organ , which according as it varies in Animals of a different Species , so it brings to pass , that an affection of the same Object is directed to different Motions : Forasmuch as nothing else can be understood by the name of Natural Instinct , than the Local Motion as of the whole , so of the minute parts indued with a certain magnitude and Figure , according to which natural things are distinguish'd , and obtain various denominations . Now those motions which follow corporeal dispositions , may be reduc'd to three Heads . The First is of those , by which Animals , through a certain inbred impulse , hate and decline those things which are hurtful and troublesome to them ; as a Sheep abhors the sight of the Wolf , and immediately upon the said sight thereof , betakes it self to flight with all imaginable haste : Almost all sorts of Animals dread the Lion , and are terrified at the sight of him : On the other side , the Lion fears the Cock , and trembles both at the hearing of his Crowing , and sight of his Crest : So the Chickens fear and fly the Kite , &c. The Second is of those by which Beasts apply themselves to the propagation of their Kind , and the generating of their like ; so the Silkworm weaves its Egg ; so Fishes and other Animals , by a certain inbred propensity , do many things which tend to the foresaid end . The Third is of those things by which Brutes provide for their own preservation , and sustain themselves from perishing , they go out to get their Food , they make choice of their Meats , they lay up Provision against the approaching Winter , and do several other such like actions which conduce to the said end . VIII . Whence ariseth the Hatred and or Antipathy between some Animals . The Motions of the first Kind are easily made out , when we affirm that by the sight of such Objects , certain impressions are transmitted through the Fibres of the Nerves into the Brain , which convey the Animal Spirits into the Nerves ; which upon turning the Back , or moving the Thighs , are readily disposed to help on the flight ; and also partly upon those Nerves which dilate or contract the Orifices of the Heart , or which agitate other parts from whence the Blood is sent into it : That this Blood being rarified , after another manner than is usual , sends into the Brain those Spirits which are adapted to the cherishing and fomenting of Terror , that is , which are apt to keep open , as also to open again those passages of the Brain which conduct them into the said Nerves : So the Sight of the Eye , from the Body of a Wolf , reflected upon the Eyes of a Sheep , hath the force of disposing the Spirits , and diffusing them into the Nerves in such a manner as is necessary for promoting the flight of the Sheep : The like may be said of Chickens flying the Kite ; the Lion the Cock , and other Beasts the Lion. For it is the nature of the Brain , and of the contexture of the Fibres , into which an impression is made in the said Beasts , to produce such an affection . And that such a Disposition and Temperament is found is Beasts is sufficiently manifested by the steam exhaling from the body of a Camel , by which a Horse is so terrified , that he becomes incapable of standing a fight : Of such a Nature likewise is the smell of a Horse , that thereby an Elephant is driven into madness : The Root also of the Herb Valerian sends forth a Vapour , which works so upon Cats , that they are thereby driven into a merry Pin , and skip and frisk about like mad . In regard that such or such an affection is not grateful or ungrateful of it self , but upon this account , that there is such or such a conformation of the Organs , and contexture of the Fibres , which is found in these Animals . Nor is it haply for any other cause that the Cock awakes before light , and by his Crowing proclaims the approach of Day , than because the Sun having passed the Circle of Midnight , and having almost overtaken the Morning , puts to flight the cold Air of the Night by his approach ; by which coldness the Cock being raised and awakned , is so stirred up and alarm'd , that he presently sets up his Note , and by his loud Crowing calls up mortal Men to their tasks and labours . IX . Whence proceeds the Love of Beasts one towards the other . By the same reason may the Love of Beasts be set forth , for example , when an Object is agreeaable , the Light which is reflected towards the Eyes of the Animal , strikes the Optick Nerves in such sort , that they dispose the Animal Spirits to insinuate , part into the Muscles , which have their course toward the Tail , Head , Legs , &c. part into those which serve to inlarge the Orifices of the Heart , and to press the parts of the Heart , whence the Chyle and the Blood may come in greater abundance ; which not only causes the Animal Spirits to mount up to the Brain in the greater quantity , but also gives them a freer course into the same Muscles , and by this means to conserve , entertain and fortifie those motions which the presence of an agreeable Object hath caused . X. Whence their Passions . So that the Passions of Animals , taken not for Simple Faculties but for Actions , are nothing else but the emotions of the Brain , caused by the presence of whatsoever Object , whether hurtful or favourable , and fortified by some particular courses of the Animal Spirits , which depend principally upon the disposition , which the Heart and others of the Principal Bowels put into the Blood. XI . The Composition of the Machin of a Beast more exact than any other . You will , possibly , have much ado to conceive that Beasts should do all that we see them do , after the manner of things Inanimate ; as for Example , of a Clock which marks the Hours , and strikes by virtue of the disposition of its Wheels , and the force of its Counterweights : For tho' in Beasts we take notice only of their motions , yet the great number of those motions is very surprising , and it is a hard matter for any one to persuade himself that so many can be included in a Machin . But I will easily deliver you out of this pain , if you have the representation before you of a Clock , for Example , composed but of 15 or 20 pieces , which nevertheless strikes all the Hours , marks the Half-hours , the quarters , and all other parts of Time which are numberless . Now if a Machin , which is composed of so small a number of Pieces , is capable of so many things , how many must we imagin the Machin of a Beast capable of , which is compos'd of Spring-Fibres , whose number and due disposure surpasses , without compare , the structure of the exactest Machin that ever was made by any Workman . XII . The Machins of Beasts are wound up as other Machins . If it be answered , that there is a great difference between a Beast and an Artificial Machin , in that a Clock may be wound up every day ; but that the Machin , for example , of a Dog , cannot be so wound up . It is evident , that all Machins are not wound up , or renewed after one and the same manner . Pocket Clocks or Watches have their Springs ; certain Turn-broches or Jacks have the smoke of the Chimney to make them move ; Mills have Water or Wind ; Thermometers have heat or coldness of the Air ; the Hydrometer divers degrees of Moisture : So likewise Beasts have their Aliment . So that we may well say , that their Machins are wound up as often as they have any thing given them to eat or drink . XIII . A Dog is not carried by Cognition to snatch at a piece of Bread. But if there be no difference between Beasts and other Machins , whence comes it that a Dog can snatch at one bit of Bread or Meat , and reject or refuse another bit which is offered him , if he have not a Cognition or discerning Sense to accept the one and reject the other ? Who can think it necessary , that there should be Cognition in a piece of Iron , to cause it to move towards the Adamant or Loadstone , and not as well to move towards a Flint when it is offered to it ? Or who will think himself obliged to admit of Cognition in a Dog , to cause him to run away at the sight of a Cudgel , when it is offered to him , any more than in a piece of Iron shunning when the opposite Pole is presented , that very Adamant by which formerly it had been attracted . XIV . A Dog fsels never the more pain , because he crys when he is beaten . And certainly these who believe that a Dog feels pain , because he crys when he is beaten , have as little reason for their belief ; since the greatest sound that can be heard when the Organs are touch'd in certain places , is not a sign that there is any pain in those Organs : So that there cannot be proposed any such action of Beasts , but I can produce something like it , which you must necessarily confess does happen in other subjects , which can no way be imagined capable of Cognition ; and you need do no more but see with your Eye , and touch with your Hand the several Organs of Beasts , and their different Structures , to make you comprehend how the greatest part of their Actions may be performed without Cognition , after which you will find no great difficulty to acknowledge , that the same may be said of all the rest . XV. A Swallow shews nothing of Cognition in building her Neast . No more doubt need to be made , that a Swallow may without knowledge , imploy it self in building a Neast of Mud , with the greatest Artifice imaginable ; may gather up heaps of Straw and Chaff to make a curious sort of Straw-work , may search about for Feathers to lay a-top , for the making of her Bed the more soft and warm , the disposing of her Eggs , and the covering and cherishing of her Young Ones after they are hatcht , till such time as they are in a condition to fly , and shift for themselves , and seek their own Food ; since there are many things that have not the least Cognition , which exactly perform that which Men cannot do with all their Ingenuity . I might here recount a world of Examples , but I shall only add , that a Stone hung at the end of a Pole , marks out the direct way to be kept for to go to the Center of the Earth , that the Needle of the Compass points out the North , that a Fane shews the Course of the Wind , that a Clock or Dial marks out the Hours more exactly than the Learnedest Man of the World can do . Moreover , there is not a Goldsmith , the cunningest of them living , who having the filing of Iron mingled with that of Gold or Silver , can in the dark separate the one from the other , and even by plain day-light it would cost him much time and labour to effect it ; whereas a Loadstone performs the same in a moment , without the help of Day or any other Light. By this we may see that the exactness with which many Beasts perform certain operations , is not an undoubted sign that they perform them with Cognition : And besides , with what exactness or curiosity soever some Beasts may act , they have never produc'd any thing that can come near that rare skill wherewith the least Flower of the Field pushes forth its Bud , its Blossoms and its Leaves . XVI . Nor a Bee in the contrivance of its Comb. Nor did ever any Bee make Compartments in his Comb more exact and curious than those of a Pomegranate . And if it be so marvelous a thing to see a Dog seemingly sensible , when his Machin is wholly disposed to move after a piece of Bread , or in pursuit of a Hare : So that tho' we perhaps may think our selves obliged to admit of Cognition in him , yet it is true , that his whole Machin , which is infinitely more strange in its Fabrick , than it is strange to see it go when it is made , hath nevertheless been so composed , as to be without Art or Cognition , and to act by motion only , and the disposition of its parts : Moreover the Argument drawn from the exactness with which Beasts perform many different Actions , proves too much : For we should thence be forced to conclude , that Beasts have more perfect Cognitions than Men , as we have said before , and that the principle of these Cognitions is more noble than theirs , which certainly no rational person will easily grant . XVII . How Brutes are impelled to Generation . But let us repeat our Discourse , interrupted by this long digression , concerning the operations of inanimate things , compared with the actions of Animals , and explain the Motions of the Second Kind , with the same ease as we have those of the First . For that Beasts are incited to Generation and Propagation , proceeds from the alteration made in their Bodies , by which their Fibres , and the Contextures of them are so disposed , that from thence a certain affection is derived , ( especially in those Organs that are inservient to Generation ) which is directed to the foresaid Motions . For Lust is a certain disposition of the Animal Phantasie , proceeding from the motion of the Genital Parts ; that is , while those parts are tickled by the fervid Spirits , and impelled to Coition . So when a Proud Bitch is brought to , or comes in company of a Dog , she by her smell so disposes the unquiet Spirits in the Head of the Dog , that they make a conflux into the parts adapted for Generation to perfect the Coition . Whence that Tentigo , which in many Males accompanies Lust , is wont to be made by the Animal Spirits , whilst they flow down to the Fungous Nerves of the Masculine Member , and are hindred from returning by the Prostates , swelling with the Fervid Seed , and stopping up the Pores of those Fungous Nerves ; so that Animals , when they are libidinously inclin'd , are of that disposition , as easily to be directed to those Motions which tend to Propagation , and the preserving of their Kind , as shall hereafter be more largely discourst of concerning Birds . XVIII . What Imagination is in Animals . When , I say , that Lust is a certain disposition of the Animal Phantasie , I would not have it so understood , as if it were some internal Principle , from whence a certain Imagination should proceed , but only that it is a simple motion , proceeding from the course which the Animal Spirits take of themselves across the Fibres of the Brain ; whence it follows , that the Imagination of Animals , taken for a simple Faculty , is no other than a power which the Animal Spirits have to flow , as of themselves , from the Brain into some certain Muscles , rather than others , for the moving of some particular Members . XIX . How it comes that Brutes are concerned for themselves , and the preservation of their lives . With the same clearness may the Motions of the Third Kind be made out : For Nature hath been beneficial to all Creatures , in furnishing each of them with their proper Organs , and impressing that habit of Body , by the help of which , and of the said Organs , they are enabled to stir up those Motions , by which they may the better provide for their Life , and prosecute those things which are necessary for the preservation of themselves . It is infused by Nature into all sorts of Animals , as saith the Latin Orator , to defend themselves , and take care of their Life and Body , and to decline those things which seem hurtful to them , and to search after , and endeavour to obtain all things that are necessary for the preservation of Life . Wherefore it is no wonder , if Brutes , with so much application , are intent upon their preservation , by building themselves places of abode ; by seeking their Food , even rather than fail , by force and rapin ; by providing and laying up sustenance , by discerning and distinguishing some Meats from others , and doing such like actions as tend to sustain and keep themselves from perishing : Forasmuch as Beasts are so framed by Nature , that by their Meats , by their Retiring Places , &c. they are disposed to those Motions , from which they use to be prompted to Feed , and to betake themselves to their Receptacles : Whence it comes to pass , that they distinguish the Meat agreeable to them , from that which is not ; and that they decline some things , and accept of others : For Example , for the curing of Diseases , and restoring to Health from any Distemper ; the Ring-Dove and Blackbird make use of Laurel . For purging the Belly , the Dog hath recourse to Grass ; the Hen , to the Wall-flower ; the Swallow useth Celandine for clearing the Sight ; the Tortois , Origanie against all sorts of Poison : To which choice doubtless , they are only prompted by the very inspection of the Herb , because of the different temper of the Body , and the various contexture of the Fibres . Forasmuch as from Trees and Herbs such Emanations arise , as are proportionate to the Sensorium so affected , and not like those which flow from other sorts of Plants ; and therefore , as Animals , when they are prest with Hunger , are not promiscuously allured by all sorts of Meat alike : So when they labour under any Distemper , they are not by the same impulse carried all to one and the same Herbs , but to those only , by which they are disposed , and in a sort attracted by the peculiar odour which affects them . Nor can any other reason be assigned , why the Stork makes use of his Bill and long Neck instead of a Clyster-Pipe to purge its self of all Noxious Humours ; or why the Serpent rubs himself upon Fennel to heal his diseased Eyes , except because the ill affection of the Belly and Eyes , prompts , allures and impels to these motions ; whence it plainly appears , how prodigal of Reason they are , who allow it to Brute Animals , and have recourse to I know not what Soul , which must forsooth lie latent in them , and be attributed as a principle to all their works , when as at the same time , there is no mutation to be discerned in them ; things are always performed after one and the same manner ; variety of place , time and age , produces no diversity in their Operations , which happens not so in Man , as being participant of Reason : There being innumerable ways and modes of Human Actions : And there is not in every Man one only action , or one propensity as in Beasts , but in each Man a several Inclination , some proper to one , some to another , according to the condition of the Soul ; whence it comes to pass , that there is so great a diversity of Opinions in the minds of Men , so that few Men think one and the same thing , hate one and the same thing , affect one and the same thing . Of the first Class of the Actions of Animals , enough hath been said already ; let us now hasten to examin the others , in which there are apprehended some appearances , not only of Perception , but also of Judgment and Ratiocination , such as are Dubitation , Invention , Determination , &c. XX. How it is that Animals doubt . It can scarce be denied , or indeed so much as questioned , but that Animals may sometimes seem to doubt , demur , or be , as they say , at a Non-plus . We find that a Horse , when two bundles of Hay , or two measures of Corn are set before him , makes choice of one and rejects the other ; and it is not unpleasant , sometimes to behold a Cat , when Meat a little too hot is thrown to her , at a stand whether she should refuse it , or fall to : For first touching it with a light Foot , then nicely putting her Mouth to it , she hesitates a while , with her Ears shrunk up , as it were meditating in her mind which of the two she should prefer , feasting or abstinence , till at length declining the latter , she makes choice of the first , and sticks to that resolution . These and the like actions , which seem to argue in Brutes a liberty and indifference , are to be attributed only to different motions which are in the Brain : For different Objects produce different Motions in the Organs of the external Senses , which by the help of the Nerves being carried into the Brain , excite some other motions , by which the Spirits being directed variously , impel the Conarion , and so bring it into an aequilibrium , so as not to incline more to one part than another : Whence it comes to pass , that Brute Animals remain indifferent , and seem unresolved whether to take , or leave their Meat : For since these Spirits are Corporeal , they excite opposite motions in the Glandule , which thwarting one another keep the said Glandule unmoved , and suffer it not to decline to one part more than another ; and this happens not only to Brutes , but sometimes also to Men , that is , to those , who , being deprived of their Senses , act without Counsel or Design . MEDINA makes mention of a certain Madman , who having two Apples offered him at the same time , could not resolve which to fix upon , and so in much perplexity remained a good while in suspence without tasting of either , till at length a certain Friend of his took the Apples , and presenting him with one , reserved the other till that was eaten ; whence it evidently appears how different the hesitation of Brutes is from the suspension of Judgment . For when by Perception we discover any thing which was hid from us before , and of which we had not yet made any judgment , Our Mind by the help of the Will , that is , of that faculty which it hath of moving it self , and determining , remains doubtful , and suspends the Judgment ; if it apprehends any obscurity in the thing , afterwards deliberates ; and as soon as it finds the matter cleared , gives its assent , which it denies to other things which do not appear so clear and evident . But in regard Beasts want Will , and are only prompted by Corporeal Objects ; no wonder they do not in reality either doubt or make choice of any thing with judgment , because not reflexion , but only a recourse of certain Images , causes the said dubitation . XXI . The Craft and Subtilty of some Creatures . The Craft which most Animals make shew of , and the Wiles which they use in their Actions , are not thought to be made out with the like facility ; forasmuch as so great a semblance of Reason appears in them , that some may possibly be induc'd to think , that the said Animals are led by Cognition , and act by an inspection of some end or design . But because the Fox excels all other Beasts in cunning and stratagems , and is therefore propos'd by some Writers as an example of subtilty , it will not be amiss to relate some of the Tricks and Machinations of this subtil Creature , in regard they being laid open , it will the better appear after what manner the operations of other Animals are brought about . PLINY makes relation that the Foxes in Thrace do nothing inconsiderately , insomuch that being to pass frozen Rivers , they do not presently commit themselves to the hazardous passage of them ; but first going softly , and with a light Foot , they apply their Ear and listen the better to make trial of the thickness of the Ice : For when they hear any thing of the murmur of the underflowing Water , they stop their course , and unless any danger attend them behind , stir not a foot farther ; but in case no noise be heard , nor any fear of danger be discovered , they pursue their course and get clear over . For they seem to reason with themselves after this manner : That which makes a noise is moved , that which is moved is not firm , that which is not firm must needs be fluid or liquid , that which is liquid cannot be retained or kept back , but may give way ; therefore this River is not to be passed . Another subtilty is related of this Creature by the same Author , in catching and getting possession of its Prey : When-ever he beholds a flight of Birds in the Air , rowling himself in Red Sand , that he may appear all bloody , holding his Breath and lolling out his Tongue , counterfeits himself dead ; by which means when the Birds come to settle upon his Body , he on a suddain snaps them , and devours them . Likewise when he is hunted , and the Dogs drive so close upon him , that he is in danger of being taken , he makes use of this stratagem : Having stail'd he besprinkles his Tail with the Urin , then shaking it all about , he indeavours to avert the Dogs by the stink thereof , thereby to free himself from the harm that attends him . The like trick he makes use of to drive the Badgers from their Kennels ; as soon as he perceives them gone out , he enters in , and leaves such a stink with the Excrements he voids there , that they are forc'd to make their Lodgings elsewhere . No less Fox-craft is shewn in freeing themselves from the Fleas with which they are oft-times molested : For taking a wisp of Straw , or any sort of soft Stubble , they plunge the hinder part of the Body in cold water , from which the Fleas flying , get up to their Heads , which then they plunge in like manner in the water , upon which the Fleas make their escape into the Straw or Stubble ; and by this means the Foxes get away and leave their Guests behind them . A greater stratagem than all these the famous Sir KENELM DIGBY relates of a Fox , who being hard pressed by the Dogs , entred into a Warren , and there hung upon a Rafter among the Carcases of the slain Animals , until such time as the Dogs having lost the scent , were passed by the place . Also of another , who urged by the like necessity , caught hold of a Broom Shrub which shot up over the Mouth of his Kennel , which was plac'd in the broken clift of a Rock , and to which there was an easier access by another way , and so by an accustomed and well-known passage , slipt safe into the Hole , whilst the Dogs eager in pursuit , and not suspecting the danger of the passage , fell down among the Rocks to their destruction . XXII . Passion always follows Appetite , and the alteration of Animal Spirits is made in the Body . Now that the Cause of these Operations may be the better demonstrated , two things are to be supposed out of what hath been already said ; First , That always some affection accompanies the sensitive Appetite . For it cannot be otherwise to make every Animal have an Appetite or Aversation , but that some perturbation must spring up in his Body , which taking its source from the Blood and Spirits , dilates or contracts the Vessels or Ventricles of the Heart , and at the same time agitates other parts of the Body ; by which it comes to pass , that according to the various reception of Spirits , some passages of the Nerves are incited to an opening or shutting , and thereupon the Animal is rendred prone to follow after or decline : Hence Brutes if they are prest with Hunger , are unquiet , and by the Nerve of the Sixth Conjugation , inordinately agitated in the Ventricle are impelled to the motions of the Members adapted to the pursuit of Aliment . Secondly , When as all the motion of the Body of an Animal is stirred up by the contacts of exteriour Objects , it comes to pass that in the Ventricles of the Brain certain Pores are opened by the transcourse of Animal Spirits , which retain a greater facility of opening themselves , than those through which the Spirits have not yet pierc'd : Whence it comes to pass , that if any Object occur , like to that at whose presence those distinct draughts are delineated , the Animal Spirits stirred up into motion , fall into the Vestigia formerly made , and after the same manner as before , move the Members of the Body . As if ● Bull , for examples sake , be several times removed from a fertile into a barren and unfruitful S●il ; the Stomach being stirred up with Hunger , and pricking the Membrans with an acrimonious Humour , the passages of the Ventricle are twitcht by the Spirits , which being carried to the Brain , and making their Course through paths already formed , represent to the Bull the more delicious Meat formerly fed on , and those more fertile Fields where heretofore he used to feed , and which entring the sources of the Nerves , pass into the Muscles designed for the moving of the Legs , and as it were compel them to make after their former Pastures : For tho' their Memory be not indued with any great activity , and that facility , and those draughts which are imprest in the Brain , and which the Spirits leave in the Fibres through which they are carried , may seem to perform little ; yet they produce all those wonderful effects which are observed to be in Brute Animals , and induce the greatest part of Mankind to believe that they make use of Cognition , and are govern'd and prompted by some Spiritual latent Principle . Nay , if the matter were throughly searcht into and examined , Memory is the effective cause of most of the Actions which we negligently and without attention perform , as I have formerly hinted concerning the Minstrels . XXIII . How the Foxes in Thrace being to pass a River , lay their Ear to the Ice . These things thus premised , let us return to our Foxes : As for those in Thrace , which refuse to commit themselves to the congealed Rivers till they have first made proof of the solidity of the Ice ; it is certain that they do not do this by Judgment , but by the benefit of Memory ; since it might possibly happen , that the noise of the Water being heard from another place under the same covering , they might notwithstanding their politick listning , fall in and suffer no small prejujudice in those Bodies of theirs they take all this care of : Or that in the Winter time when they have discovered the course of the Waters , they have been seised with cold , the Memory whereof smiting their Phantasie , deters them from swimming at that time : But as to their moving their Ear to the Ice to explore the thickness thereof , that proceeds from fear , by which the Spirits being excited , betake themselves to those Muscles which are inservient to the bending of the Head , and terminate at the Ear which is to be applied to the Ice : Whence it is apparent , that the Fox in this case makes no use of Ratiocination , but is impelled by Affection ; is not indued by Cognition , but actuated by Passion alone to such like Motions . XXIV . How the Fox to get Birds , counterfeits himself another Creature . But as to their lying as dead in ambush to catch by surprise the unwary Birds ; as to their lifting up and setting their hinder Feet against the stem of a Tree with their Head downward and their Fore-Feet on the ground , and smiting often with their Tail against the Tree , thereby to strike a terror into the Hens , and cheat with a shew of some other Animal leaning against the Tree : As to the shooting the light of their sparkling Eyes upon the Hens , while their whole Bodies besides lie hid in the umbrage of the Night ; that being inticed by the said light , they may forsake their Perches where they roost , and lighting on the ground , fall into their Clutc●es : All this is to be attributed not so much to their Craft as to Chance . For it might probably happen , that a Fox wearied with a long march , might lie down upon the ground and fall asleep , to whom , lying as it were dead , the Hens might very well approach without fear ; which the awaking Fox perceiving , still counterfeits himself asleep , the better to take his opportunity of falling upon them unawares . The like luck hapned to a Fox mentioned by PETRARCH , which Fox when the Fishermen that carry Fish to the City , as commonly they do in a Summers Night , found lying for dead across the way , they took him up , intending to flea him for his Skin , and threw him into the Pannier of Fish , whereof when he had plentifully feasted , out leapt the Fox , and to the great astonishment and vexation of the Fishermen , got clear away with his Belly full of Fish . By the like fortune it might be , that when a Fox saw Hens roosting on a Tree , and not being able to reach them , ran round about the Tree , as seeking some place of advantage whereby to raise himself to a higher station , mean while the Prey fell into his Mouth , and he injoyed his wish without any further trouble . Whence it is probable , these tricks so happily succeeding , that afterwards upon the barking of an empty Stomach , and the instigation of Hunger , the Spirits repeat those passages of the Brain which they entred , when lying as asleep or dead upon the ground , he thereby got his Prey . Which Artifice , often repeated , becomes a custom , and fixes deep into his Memory , so that when ever after he hunts for Food and lights upon any Prey , he repeats the same series of actions , and makes use of the same stratagem , as hath formerly proved so prosperous and successful to him . The truth of it is , many actions which appear not a little strange in Beasts , at first were performed by them , by some certain casualty , which actions having afterwards been made familiar by frequent experience , passed into habit● , which seemed to carry in them a great deal of Wit and Sagacity ; and such in all probability was the chance of a certain Wood-Fo● ( mentioned by the famous Dr. WILLIS ) who to get into his Clutches a Turky , pearching upon the Bough of a Tree , made use of this device to catch it : He circuits about the Tree with a very swift and eager pace , keeping an intent Eye all the while upon the Bird , and by this means obliged him to return the like intention of aspect , which to do , he was forc'd to turn about his Head so often , till at length becoming giddy , and taken with a Vertigo , he falls from his Pearch into the very Jaws of his Enemy . XXV . How the Foxes deceive the Hens by directing their Eyes towards them . By the same reason it is that Foxes , by casting fixedly their Eyes upon the Hens , either seduce them , or attract them ; forasmuch as it was likely enough to come to pass by chance , that while the Foxes were prest with hunger , and stood gaping after their prey that sate aloft , they might so long direct their Eyes upon the Hens , that they either astonish'd at the Foxes sparkling Eyes , or struck with suddain fear , might slip down , and fall into the Jaws of the Insidiatours , by reason that the Hens , either affrighted by the continual sparkling brightness of the Foxes Eyes , or thinking themselves already taken by the Enemy , are seised with such a sudden astonishment and confusion , that they cease and let fall all their natural Functions ; as if their Bodies had no offices to perform : By which means it happens that they first begin to totter , and immediately thereupon by the solution of the Nerves in their Legs , drop half dead upon the ground . The same thing is also observed in other Birds , who when the Cats get upon the Boughs of the Trees , and thence fix their Eyes upon them , as if a suddain Vertigo seised them , they drop down from their Pearches upon the ground . XXVI . How the Fox pursued by the Dogs , comes to dip his Tail in Urin. As to the Craft of Foxes , when they are in danger , watering their Tail in their own Urin , and sprinkling the Dogs Eyes , this I take to proceed not from the Foxes cunning , but the fear that seiseth him . For it is a common thing among all Creatures upon the apprehension of an approaching danger , to let their Urin pass from them , as it were unawares ; in regard the Spirits being then disturbed , are hindred from their wonted Functions , and the Nerves in the Bowels being relaxed , there follows a profluvium of the Excrements ; and whereas upon the said fear they contract their Tails , and draw them in between their hind Legs , they must needs be soak'd in Urin , which upon the shaking of their Tails is sprinkled into the Dogs Eyes , and almost blinding them , hinders their pursuit . XXVII . How it is that Foxes free themselves from Fleas . Nor doth that Craft of the Fox to free himself when he is bitten by Fleas , depend upon a higher cause : For in the Summer time , when itching accompanied with heat is stirred up in his Body , to remove the same , he enters into a River , where first having found some refrigeration in his Feet , he ventures to enter deeper , and by degrees immergeth all the other parts of the Body ; but to avoid the necessity of plunging in too deep , and the trouble of swimming , which would probably heat him afresh , he carries along with him in his Mouth into the River boughs of Trees , or wisps of Hay or Stubble , to which the Fleas flying for refuge to avoid drowning , and sticking thereupon , leave their Landlord clear of them . In the mean time the Fox finding his Limbs finely cool'd and refresh'd , returns into the Wood from his importunate Train , and delivered from the vexatious itching that had so lately molested him . Whereupon afterwards mindful of the pleasure and profit he thus received in the water , whenever the like occasion happens , he resolves upon the same method , betakes himself to the same actions , till at length the trick becomes familiar , and by frequent reiteration turns into a habit , because after the Vestigia of the Memory have brought back upon the Glandule the first Image of the thing , the Spirits returning by the same passages flow into the same Muscles , and so dispose the Foxes Body to produce the same actions he had produc'd by occasion of the Object that first excited : So that all Arts which Animals put forth on several occasions , depend upon the observation that comes into their Memory , of what before succeeded or not succeeded , as may be demonstrated in Thales his Ass , who when laden with Salt , had a River to pass , and by chance plunging somewhat deep in , melted the Salt , found himself eas'd of his burthen thereby , by which success being incouraged , he as often as he entred the said River , went in on purpose the farther , and rolled himself with his burthen in the waters , nor could he be reclaimed from this manner of acting , till in the place of the Salt , a Sack of Wool was put on his Back , which being made more ponderous by sucking in the waters , eluded his Asinine subtilty , and caused the Master from thenceforth to take new measures , and abolish a custom so incommodious to him . XXVIII . What is the cause that Beasts remember . For when Sense or Imagination hath disposed the Animal Spirits to begin their course , the tracts thereof which are formed in the Brain , are so much the more deeply imprest , as the Action of the Animal Spirits hath been the stronger , or hath lasted a longer time , or hath been the oftner reiterated ; for such strength , duration and reiteration are the causes that these tracts are not easily to be effac'd , and that they are in such sort conserved , that they may be raised there again , a long time after . And thus you have in a few words what it is that occasions the Memory of Beasts , tho' they are not capable by Discourse or Speech to express it . XXIX . How it is that the Fox drives the Badger out of his own Hole . As to the trick made use of by the Fox to drive the Badger out of his Hole , that is to say , by staling or voiding his Excrement ; I find not in the performance thereof , that there can be any necessity of having recourse either to Judgment or Providence , since there is nothing in it but what may be ver● ▪ well effected by instinct of Nature : For what is more natural to Beasts , than to defile with their Urin or Dung any place where they have continued never so small a time , if necessity at that time urgeth ; so that it need not in the least be questioned , but that a Fox entring a Badgers Den when he is absent , may very well leave a notable stink behind him , and that through the abhorrence thereof the Badger may be driven to seek out for another place to Kennel in . XXX . Whether it be an evidence of Reason , that the Fox when he is hard pursued by the Dogs should hang himself up by the Teeth among dead Carcases . I must confess it is not so easie to make out , how a Fox should without Knowledge , so industriously defend himself from the Hounds following him with a great Cry , by intermingling himself ( if what is related of him be true ) among the Carcases , which by chance were hung up in the Warren , unless with the Illustrious DIGBY , we grant it might so happen , that the Fox through fear or lassitude , seeking out for a skulking hole , and not finding in that plain tract of Earth ( such as a Cony Borough or Hare Warren useth to be ) any Bush , Bramble or Hillock , or any other place to betake himself to , except that Animals Gallows ( as we may call it ) where such sort of Beasts were hung up , might be induc'd , his Phantasie so suggesting , especially when he was driven to the utmost of his Course , to intermingle himself among the said Carcases , which seemed to him in a state of deep repose ; and since it could be no other way effected but by hanging himself up by the Teeth , he put himself in that posture , and so continued till such time as the Dogs running under the place , overshot their Prey , which they little suspected to be hanging in the Air , and so lost the scent , which while they endeavoured to recover , he by hastning into the next Woods and Coverts , and getting away by stealth , took another Path , and thereby clearly evaded the danger and streights he had been reduc'd to . XXXI . How it is that the Fox close followed by the Dogs , had the luck to catch hold on a Broom Bough which hung ●ver a Precipice . As to that Fox , who from a Broom Bough which he laid hold on , threw himself into his skulking Hole ( the ordinary place of refuge whenever near it ) being so hard prest behind by the Dogs , that he could not go the readier way where there was an easier passage in ; on the one side , the ingress taking up his whole Phantasie , on the other side the Precipice , which he had often seen , being called to mind , it could not be otherwise but upon the concurrence of these two things , he must needs be admonish'd to use great Caution for his safety in getting into this Hole ; and it was but natural for a Creature that was to undergo so great a danger , to catch hold upon any thing that might help him in his leap ; and since there was nothing that offered it self at that instant besides the Broom Bough , which by chance hung over the Hole , he caught hold on the same with his Mouth , and thereby gaining an opportunity of poising himself for the better fetching of a new sort of leap , he threw himself cleverly into the said Hole ; mean while the Dogs pursuing the Chace with the same speed and eagerness as before , were upon the brink of the Precipice before they perceived there was any danger there , in which extremity , neither being able to retreat back , nor to put a stop to their career , they fell in and perish'd in their fall . Yet all this while there is no necessity to imagine , that the Fox contrived this destruction for them , or brought them designedly into this destructive Path ; but in the first place it was effected by his meeting with this refuge from the hard pursuit of the Dogs ; and next he was prompted by his Memory , which had upon some such like case before suggested to him , how to shift for himself when-ever the necessity of declining the like danger should require . XXXII . Certain Phaenomena which indeavour to prove that Ratiocination belongs to Brutes . And here what hath been already said , induceth us not to pass by certain Phaenomena , by which some take upon them to attribute to Brute Animals the faculty of Ratiocination , and judge them to be indued not only with Cognition and Perception , but with Discourse also . For example , when a Dog hath two ways to go in quest of his Master , he thus seems to reason with himself ; my Master certainly went one of these two ways , as is evident from the scent of his Footsteps , but he went not this way , therefore he must needs have gone this way . And when a Dog in pursuit of his Prey , comes to a threefold Path , the first and second being smelt to , and found not to be the right , he immediately without delay , or putting his Nose any more to the Ground , takes his progress through the third . But the real cause of these two actions is no other than the instinct which Nature hath infused into these sort of Animals to perform such and such actions . For in regard a Scent evaporates by a continual effluvium from Man , Hart , Buck , Hare , &c. and adheres to other things , the Dog hunts out the scent of Master , Hare , Hart , &c. imprest upon the Vestigia or Footsteps , and being not in the least moved by the scent of the traces of any other Body , no wonder if he take that way by which his Master or the Hare went. Nor is it to be objected that the Dog doth not this by his Scent , but only induc'd by this sort of reasoning , The Hare hath made his escape by one of these three ways , but he is not gone this way nor that way , therefore it must needs be that he hath made his escape by the third way . Forasmuch as this is but a meer fiction , and not the reasoning of a Dog , but of a Man : For the Dog is no other ways but by the scent led into that Path to which he is induc'd by his quick scented Nose ; for when he finds it , he pricks up his Ears , and with great speed pursues his Prey , because the vapour of the scent filling his Nose , he hath no more to do , but to give himself the loose and follow the tract of it . Whereby it evidently appears , how different this way of Operation is from Discourse or Ratiocination ; since the Dog advances not from one Cognition to another , nor discovers any unknown Verity by the help of another known . For such a power is capable of Intellect , because of its Perception ; and of Will , because it applies the Intellect to Inquisition , and Consideration of its Object . Which Faculty seems to be instead of a consequence of a Created Mind . For Brute Animals , as LUDOVICUS VIVES observes in his Second Book De Anima , begin not from A and so pass on to B to know C , nor from B as conjunct and proceeding from A , but because A pleaseth not , they seek another thing , and so fall upon B ; as when a Dog follows his Master hunting after a Wild Beast , he both by scent and sight discerns him to be a Man : If it be correspondent with the scent and aspect of his Master , he rests satisfied , tho' it be not the very same person ; but if otherwise , leaving him , he betakes him to another , thence to another , tho' having no coherence with the former , till he lights upon him whom he seeks . XXXIII . How it is that the Torpedo catches other Fishes . Among the subtile Wiles of Brute Animals , the Craft of the Torpedo or Cramp-fish uses to be made mention of . This Creature is skulking in muddy places , the better to lie in wait for small Fishes which it feeds upon , casting such a numness upon them , that as soon as ever they rise above water it easily catches them , and devours them . Moreover , the Writers of the Wonders of Art and Nature , deliver of this Fish , that by touching only the Line of an Angle Rod , let down into the Water , it conveys quite up to the very Hand of him that holds the Rod , such a benumming quality , that be he never so strong a Man , he finds all the Joints and Sinews of his Hands and Arms so enfeebled , as not to be able to hold any thing in his Hand , and so likewise in his Legs and Feet , as not to go at least with any speed or swiftness of pace . The Cause of all which it will not be very difficult to demonstrate , if we consider that it is Natural to this and other sorts of Fish of a cold Nature , so to cover and as it were arm themselves with Mud , that the Fishes when they approach , are upon the emission of this Venenous quality , immediately seiz'd with such a Numness as if they were all frozen and bound in Ice . Forasmuch as such sort of Spirits are emitted from the Body of the Torpedo , as penetrating the substance of the Fish , or reaching the Hands , Feet , or other Members of those that touch , benum their Spirits coming forth to meet them , and consequently stupifying those parts of the Body , render them feeble , tremulous , and unapt for motion , and that so throughly , that the business is effected before the Fish are taken either by Net or Angling-Rod . The same may be said of the Sepia or Cuttle-Fish , who finding danger approaching from the hands of the Fisherman , sends forth a certain black Liquor , by which the Water being all ting'd , and putting on a black or sable Hue , he dexterously failing all the Arts of the Fishermen gets away safe and secure . But neither doth this Stratagem any more , than any of the rest , proceed from any Discoursive Faculty or act of Reason , but from a laxation or loosning of the Nerves caused by Fear ; as hath been already discourst concerning the Fox , who for fear voids his Urine ; so the Cuitle-Fish vomits out a Liquor much like Ink , from the diffusion whereof through the Waters proceeds the fore-mentioned Effect . XXXIV . How comes it to pass that Brute Beasts fear Men , and fly the sight of them . Neither doth it argue more of Reason , that Beasts stand in fear of Men , and usually fly and decline the sight of them as Enemies , since that fear proceeds from the remembrance of some damage which at some time or other they have received . For the Cause of Passions , as well in Brute Animals as in us , is nothing else but the Agitation by which the Spirits stir up the Glandula which is placed in the midst of the Brain , from the inequality of whose agitation , and the variety of parts whereof they consist , the Spirits themselves are diversly deduc'd into the Muscles , and create different Affections . Whereupon , when the Spirits , which constitute the Idea of any thing , have once form'd a way to themselves , and intruded themselves among the filaments , of which the substance of the Brain is composed , there is not requir'd so great a force by which they are obliged a second time to repeat that way , as was needful at first to prepare the said way for them ; whence it comes to pass , that when the like Species shall be form'd upon the Glandula , that facility alone which they find of advancing through their first path , will suffice for them again to enter it . Wherefore , no wonder if Brute Animals for damages offer'd them by Men , or Terrors thereby incurr'd , are not able for the future to look upon them , but that the Idea of the harm must presently occur , and they thereby be stirr'd up to flight ; as we see in some Men , who having drunk a Medicin with great aversion , cannot after that eat or drink any thing that hath the like kind of taste or savour , but with great abhorrence and aversion ; nor can in like manner so much as think of the aversion usual in taking of such Medicins , but that the same must return again into their Minds . And that this is the true and genuine Cause why Beasts fly the sight of Men , may hence be confirm'd , viz. because there are many Regions discover'd ( especially in the New ▪ World ) where it is found by Experience , that neither Birds nor Beasts do in the same manner fear or fly the sight of Men as among us , who treat them more inhumanly , and suffer no place where such Creatures harbour to be at rest from our Fowling-Pieces , and our Venatory Instruments . Moreover , it is observ'd in the Island of Chio and other places , that Partridges never fly away , but are kept tame in great Covies , and oftentimes betake themselves in great numbers into thick inhabited and frequented Towns and Villages , no otherwise than as Sheep are fed and kept in Folds among us . XXXV . How it comes to pass that young Animals , who never saw Men before , should fly them at first sight . But there remains yet one Difficulty to be solv'd ; for tho' Beasts , who have suffer'd injury from Men , may by the benefit of their Corporeal Memory be affrighted at the sight of Men , and upon discovery thereof betake themselves to flight ; yet how comes it , that young Animals who have not seen the Face of Man before , should shrink back and be shy at the sight of what they have not yet seen ? For the solution of this Difficulty , it will be sufficient to mind what hath been discoursed in my Philosophical Institution and History of Nature , concerning some Sympathies and Antipathies of Men , namely , that the Image of a thing seen being depainted in the Brain , is by the help of the Animal Spirits convey'd into the common Sensorium , or Seat of the Sensus Communis , and from thence by the mediation of the Blood and Spirits , to the Uterus or Womb , and through the Umbilical Vein to the Birth it self , in which the Image of the thing seen , because of its softness is strongly imprinted , which tho' in the beginning it be but small , yet by little and little the substance of the Birth being enlarg'd , it increaseth just as a Letter engraven with a Penknife in a Pompion , or the Barks of Trees , is dilated , and by degrees receives Increment through the Bark . For it cannot be doubted , but that Brute Animals having receiv'd damage from Men , or an impression of Fear , transmit the Species thereof into the Birth , forasmuch as by those motions their Temperament is alter'd , and the disposition of Parts inverted , which afterwards being communicated to the Birth , by the Seed , generate the same propension therein . For we see it happens very often in the Sons of Mathematicians , that they are more delighted than any other sort of Men in the Drawing of Figures , and designing of Proportions , and that they are led as it were by a certain Instinct of Nature to the learning of those kind of Arts , which undoubtedly from their Nativity they are addicted to , and that upon no other ground but from the Imagination of the Parents , which altering the Nature of the Seed , and inverting the Temperament of the whole Body , imbues the Birth thence springing with the same propensities . XXXVI . How some Beasts come to be so Capable by Instruction and Discipline . The time now requires , that we should pass on to the third Classis of Actions , that is , of such as Animals attain to by Exercise and Discipline , and which seem so wonderful to those that observe and consider them , that they can hardly be otherwise persuaded , but there is Cogitation in these Creatures . The Hawk is taught by his Instructor how to hunt after Partridges , and other sorts of Birds , and with erected Ears receives his Instructors words , andwhen he is let fly to catch the Prey , upon the Falconers hortatory Outcries , encouraging him still to a stouter prosecution of his work , he grows fiercer and fiercer , and follows the Enemy with an extraordinary ardour of Spirit . The Famous Jastus Lipsius , in his first Century of Epistles to the Hollanders , makes mention of a Dog of a British Race , who was taught to go to Market , to carry the Mony , and to bring home the Meat . It was thus perform'd : They hung a Handbasket about his Neck , with Mony in it for so many Joints of Meat as there was occasion for ; with this the Dog goes directly without stop or stay into the Market , to a known Butchers-Stall , there receives the Meat , and away comes the Dog with his Marketting home . Setting-Dogs , who have an innate Inclination to set upon Partridges , are so taught by Art , that upon the sight of them they are to stand unmov'd , and never till the Sign be given , to rise or move a Foot. ARRIAN US is Cited by CARDAN , as relating that he saw an Elephant , who having two Cymbals in his Ears , toucht them alternately with his Snout or Trunk , to a certain Tune that was set for that purpose , and danc'd to the Measure of the said Tune in Consort with others that were engaged and had a part in the said Dance . XXXVII . The Cause of the diversity of Motions in Animals . These Operations in Animals will be more clearly made out , if it be granted that the double Nature of Brutes proceeds from the different texture of the Fibres and quality of the Humors ; whereby it comes to pass that some are more propense to one Motion of Passion , others to another , to which the unequal commotion of the Spirits in them doth not a little conduce . For since some of those parts of which the Spirits consist are more gross than others , and rais'd to a quicker Motion , the said Spirits pass on by a direct Line into the Cavities of the Brain , and from thence are led into other Muscles , into which they had not been led had they been endued with less force . XXXVIII . How a Hawk is to be brought up for the better catching of its Prey . The Hawk therefore being a Creature Voracious by Nature , and adapted by Kind to follow Prey , is without any difficulty taught to bring it to us , if we contribute to the improving its Nature , and accommodate our selves to its Inclination , since this whole business chiefly consists in this , namely , to keep the Hawk as much as may be from Sleep , and almost continually to be stroaking it , so to make it to become Tame to that degree , as scarcely to take any Meat , but from the Fist ; which familiarity being for some days used , it becomes accustomed in time to fly after its Food , thrown at some distance from it : In the next place , to hunt after a blind Pigeon let loose before it , which if it catch , that being snactht out of its Talons , another piece of Flesh is cast before it , to feed upon , as given for a reward of its Labour ; which Exercise being for some time repeated , the Hawk accustoms himself by degrees to fly after all Birds whatsoever , and when taken leaves them for the Master , being himself contented with a small Reward . Whence it is to be concluded , that all this work consists chiefly in this , That the Hawk , as is inbred in him by Nature to do , accommodates himself to the Art , and follows that Rule of feeding which Nature hath prescribed potentially , but which is improv'd by the Instruction by us given for our advantage and pleasure , in which obsequiousness of the Hawk nothing of Reason is to be discern'd , but only the Industry of the Instructor appears . XXXIX . How Animals are capable of Discipline . As to those Animals that are capable of Discipline , as are Dogs , Elephants , &c. it must be consider'd , that the Discipline whereof they are capable depends principally on the 7 th pair of Nerves , for from thence it is that the Nerve Auditive hath communication by its Envelopement , and , it may be , likewise by its Fibres with the Branches , which advance some to the Exteriour Ear , others to the Muscles of the Larinx , others to other parts of the Body ; and hence it is that Animals , when they hear any Noise , cannot but erect their Ears , utter their Cries , and move themselves after their several ways ; the Reason is , because when the Nerve Auditive is touch'd and excited , the other Nerves with which it hath communication are mov'd in such sort , that the Animal Spirits are disposed to flow into the Muscles , which serve for the Moving of the Ears and other Members . XL. How we are to conceive of a Dogs Catchinghold of a thing . This Communication of the Nerves of the Hearing with that of the Voice , and other parts being granted : It is evident that when we see a Dog ready , for Example , to catch hold of any thing , there needs no more to be done , but to shew him a piece of Bread , and to cry at the same time that he is in this posture , Hold fast , for the Noise of that Saying will not fail to cause the Animal Spirits to flow across from the Brain at that very time that the presence of the Object causeth others to flow into the Muscles , which serve to make the Dog catch hold , which being reiterated several times , the habit thereof may in such sort joyn the two Courses of the Animal Spirits , that at last the only uttering these words , Hold-fast , will be capable not only to excite the Courses of the Animal Spirits , which are answerable to one another , but also that which serves to cause the Dog to Catch hold without any necessity of the Bread being there . XLI . By what Art the Dog at Brussels was taught to go to the Butchers and bring home Meat . By the like Care and Art Dogs are taught to carry Letters and other things to any certain place , as LIPSIUS reports of the Dog at Brussels , who doubtless was brought to it by continual Use and Custom . There is no question , but a Master or Servant taking a Dog along with him to the Shambles , gave him Meat for a reward of his Labour , and afterwards hanging a Hand-basket about his Neck return'd with him to the same place , and renew'd the Reward ; to which Service the Dog was so accustom'd , that whenever the said Basket was hung about his Neck , he made to the Shambles of his own accord , and having received his Burthen , return'd home . But no Man I think will attribute this action to Judgment or Reason , but only to Assuefaction or Custom gain'd by long use , which may be easily evinc'd from the Event : For if it hapned , as the same LIPSIUS observes , that in his way home other Dogs invited by the scent should come smelling a bout him , and set upon him to take it away , then must he be driven either to defend the Basket and put the Invaders to flight ; or if overcome by number or strength , to fall in with the rest and take his share of the Prey ; by which it is evidently demonstrated , that the Image imprest in his Brain , of carrying the Basket to his Master , was disturb'd by another stronger Image , namely of repelling the Invaders , which latter Image a third yet follow'd in order , to wit , of taking share of that Flesh , for the preservation whereof he had a little enter'd Combat , that is to say , this last Image conducting the Spirits , which are inservient to the Motion of the Body into the Muscles , another conformable Action objected , was produc'd , which was at the same time delineated in the Brain , and this could be no other , than that of partaking of the Flesh , which as the case then stood was represented as the most convenient and profitable for him . And not much unlike this last , was the Education of another Dog mention'd by PLUTARCH , who was so well Instructed , to represent Arguments and Persons in a Scene , that no Stage-Player could do it more neatly and exquisitly , and particularly he took upon him the person of a Man that took Poyson in a piece of Bread , that is to say , a Morsel of Bread dipt in a Liquor which was feign'd to be Poyson , upon which he counterfeited to tremble , to totter in his gate , to be taken with a deadness and heaviness , and in the end he fell , and with his Limbs stretch'd out lay for dead , then was removed and laid out as for Burial , as the Argument requir'd ; yet after all this , when nothing less was expected , in the twinkling of an Eye , he first came to himself as it were out of a Dream , began to move his Head and Members , to open and roll his Eyes about , and lastly arose and went joyful and brisk , to shew himself to him for whom he had done all this . XLII . How a Dog is taught to Set for Partridges . But to proceed farther , That some Animals are taught to act contrary to their own proper Instinct , and omit that which they seem to be impell'd to by a certain force of Nature , doth no more than the rest evince , that they are any way endued with Reason ; since we see in Men , that divers Motions of Fibres or Spirits which represent Objects to the Mind , or excite certain Affections , do by long use , and sometimes also by accident , excite other successive Motions . For although the Motions , as CARTESIUS excellently , after his manner , affirms in his Treatise of the Passions , both of the Glandule , Spirits and Brain , which represent some certain Objects to the Soul , be naturally joyn'd with those which excite therein certain Passions ; nevertheless they may by Habit be thence separated , and be joyn'd with others of a very different Nature ; nay , this Habit may be acquir'd by one only Action , and that without long use . As for Example , when on a sudden and beyond Expectation some very loathsom thing shall be found in Meat that is eaten with a very greedy Appetite , this sudden chance may so alter the disposition of the Brain , that thenceforth the very sight of that Meat may possibly not be endur'd , which formerly was eaten with great delight , which very thing is also observ'd in Beasts : For tho' they are void of Reason , and all manner of Cogitation ; yet all Motions of the Spirits and of the Glandule , which excite Passions in us , are also in them , and serve for the preserving and confirming , not as in us of the Affections , but of the Motions of the Nerves and Muscles , which use to accompany them . So when a Dog sees a Partridge , he is Naturally inclined to run after it , and when he hears the sound of a Musquet shot off , that Sound naturally disposes to flight ; yet it is an ordinary thing for a Setting-Dog to be so Instructed , as to stop at the sight of a Partridge , and on the other side , to run after any thing shot out of a Gun upon hearing the Report thereof ; to do which they are not led by Judgment , as I said before , but by the fear of Stripes , or some kind of Discipline , by which the Motions of the Spirits and Nerves , joyn'd by Nature with certain impressions of Objects , are totally diverted and remove into other parts . XLIII . How an Elephant is taught to beat upon Cimbals . But that an Elephant should beat upon Cimbals tied to his Ears , is no great matter of Admiration , since by a small deal of Industry and Discipline he might easily be brought to it ; in regard this Animal is of a very capacious and hot Brain , and consequently easily imitates those things which are proposed to it . Add hereunto , that he hath a prompt and ready Proboscis , capable of touching the Cimbals alternately , and thereby producing a certain rude , if we may so call it , Harmony , by which all those who were present were induced to a Dance , according to the Laws or Rules aforehand prescribed . XLIV . The Cause of these Operations in Brutes is only Memory , and the disposition of the Parts of the Body . From these few examples it plainly appears , that Cognition is not required to the performances which we behold in Brute Animals ; but that Memory , the hability of the Members of the Body and Custom suffices : Or if any one will needs call them the works of Reason or Intelligence , they may indeed be so allowed , but not of the Reason of the Animals , but of those who have instructed and taught them . Now if any one will have it , that Beasts are taught some actions by example and the imitation of others of the same Kind , and by institution ; VIVES answers them in the above cited place . Brutes , saith he , teach their Young Ones to do that sooner , which nevertheless they would do of themselves ; as a Bird teacheth her Young Ones to fly , a Cat her Kittens to hunt after Mice , that they may have the benefit of seeing them like themselves as soon as may be , that is to say , perfect in their Kind ; but we teach them to do what we would have them do , which they else would either never do , or at least in another manner than we design . Nor is our Doctrin any other thing in them than meer Assuefaction or accustoming themselves , and that to nothing else but to some Corporeal Exercise , as to Speak , to Run , or in some manner or other to move their Body , or some part of their Body . XLV . By some Examples it is shewn , that Beasts discourse one another , and understand Human Speech . As to that manner of Speech or Discourse by which some Animals seem to speak to one another , and to discover thereby what their thoughts or designs are ; this appears most clearly in the Hen , who according to pleasure varies , and by divers Tones makes manifest the several Affections wherewith she is impelled ; for if she calls out her Chickens , she feigns the Tone of a Raven ; if the Kite be hovering over her , she drawls out , and somewhat elevates her Voice ; if the Chicken chances to be catcht , she as it were groans and repeats that Tone with a kind of a Sob , &c. Hence PORPHYRIUS imagined , that Animals had converse with each other by Speech , and that Thales , Melampus , Tiresias and Apollonius Thyaneus understood their Language , as Virgil relates of Helenus , in the Third Book of his Aeneids , — Who knowst the Stars , And Speech of Birds . A Parrot falling out of a Window , in Whitehall , in the time of King Henry VIII . into the River Thames , flowing by the said Palace , began to cry out a Boat , a Boat , 20 l. for a Boat ; whereupon being taken up all wet by a Waterman , he was brought to the King in expectation of the promised hire , but the Parrot , then altering his Tone , cried out , Give the Knave a Shilling . A Magpie sometimes so exactly imitates the Voice of the Fowler , as thereby to impose upon the Dogs , and draw them on , while they take it to be the Voice of the Master . The same thing PLINY relates of the Hyaena , who counterfeiting Human Voice among the Shepherds Cottages , and having learnt the Name of some particular Person , calls him out by the said Name , whom coming forth by Night , he sets upon and tears to pieces . Horses , Dogs and Apes we find understand very well the speech of Man ; forasmuch as they receive all their Dictates and Commands , and accordingly execute them . An Example hereof JUSTUS LIPSIUS gives us in a Dog at Lovain , who having letters sowed up in his Collar , and understanding by the words spoken to him , whither they were to be carried , went directly to Brussels with them , to a certain House well known to him , and there left them . XLVI . How a Hen varies her Voice . That certain Animals do as it were attemper and manage their Voices , and seem after a sort to utter various sounds at pleasure , is not to be supposed to proceed from Reason , and as if there were a certain Mind latent in them , by which their sounds were directed , but only from the Passions by which they are agitated : Which Passions inducing a various disposition in the Organs , are the cause that the Spirits are diversly emitted through the Aspera Arteria , and accordingly Beasts utter their various Tones , even as we experiment in our selves , who inflamed with Love , speak after one manner ; affected with Hatred or Anger , after another . And altho' Cogitation may accompany the Motions of our Passion , that is to say , in regard we are indued with a faculty of thinking , yet it is most evident , that those Motions do no way depend upon this Cogitation , in regard they oftentimes arise against our Will , and consequently the said Motions may very well be in Brutes , nay , and possibly more vehement than in Man. Yet can it not be from thence concluded , that they are indued with Cogitation . Different is the Pipation of a Hen , in regard she is affected with one Passion when she falls upon her Food , with another when she sees the Kite , with another when she is taken , with another when she calls away her Chickens , with another when she goes to Roost : So that we can never enough condemn those Persons of Vanity , who in Antient Times have taken upon them to understand the Languages of Beasts , and pretended to know by their manner of Speech what they designed or acted . XLVII . Parrots do not properly speak . Parrots indeed are taught to form articulate sounds , and by Custom are brought to pronounce many words , and yet they cannot properly be said to speak . For to Loquution or Speaking , two things are chiefly required , Motion of a Corporeal Organ , and Perception of Mind . For as in Sensibility there are three Degrees to be distinguished , as I have already hinted , viz. Motion of a Corporeal Organ , Cogitation of Mind , and determination of Will to judge ; so in speaking , the first Degree is Perception of Mind ; the second , Judgment and Will to discover to another that which we conceive ; the third , the Motion of the Corporeal Organ . Now in some Animals there is the third Degree of Speaking , but not the second or third : Because whereas Beasts are void of Mind , they design not by those words which they utter , to discover their internal Conceptions , but only declare those things , which by long labour they have learnt of Men , and whose signification , in time , utterly slips from them : For if some Birds have been so instructed , as to give some things their right Names , and promptly to answer to Questions ask'd them , this is only to be attributed to their Memory , no to their Understanding or Reason ; as particularly in that Parrot , who , falling out of a Window of the King's Palace into the River of Thames , called out for a Boat , since there is no doubt , but he had formerly learn'd to pronounce those words , whereby it came to pass , that the species of them being by very frequent repetition imprest in the Brain , the Spirits and Organs were determined to put forth ●he like sounds . As in that Magpie , which upon the sight or approach of his Mistress , used to utter the word 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 , i. e. God save you , in regard this Sound or Voice accompanied such an affection , namely the hope of some good thing for the Belly , in regard that upon the uttering of this word he had been always used to be presented by her with some or other more delicate Bit than ordinary . In like manner , all those things which Dogs , Horses , or Apes are taught , are no other than the Motions in them of Hope , Fear or Joy ; in so much that there is not in the least any need of Cogitation in them for the performance of these things . XLVIII . How the Hyaena counterfeits Human Speech for the devouring of Shepherds . As for the Magpie , Hyaena , and such like Creatures imitating Human Voice , it can be attributed to nothing else , but to the sensitive plexus or texture of the Fibres , and the disposition of their Organs . For their Bodies are so disposed , that when a human sound or accent smites their Ear , the Animal Spirits conduct it into the Muscles which are inservient to the formation of the Voice . And that the Hyaena should with a Voice , much resembling human , call forth Shepherds to make a Prey of them , arises from hence ; that his Stomach being empty , the species of those Animals on which he used to feed , causes the Glandule , inclining it self to impel the Spirits into that part of the Brain in which are the Vestigia or Tracts which the aspect of these Animals left ; and since the Image of the Object recurs not to the Brain , but when that also recurs which accompanied it : No wonder the Hyaena should feign or imitate Human Voice , being indued with a wonderful docility of Corporeal Organs , and able promptly to express what ever comes to the Ear. XLIX . How i● i● to be understood that some Animals have more Instinct than others . Th●s when they say that these Animals have more of Instinct than others ; nothing else ▪ i● to be understood , but that the interiour and secret disposition of the invisible parts of their Bodies , and principally of their Brai●● is such , that it receives more easily the different impressions of exteriour Objects , and causes the Members to move in more different manners than those of other Animals . L. How it comes that Dogs , Horses &c. obey our Words , and execute our Commands . Horses , Dogs and Baboons , upon certain words or signs given , obey us , and execute our Commands ; nor is it therefore just to conclude , that they are indowed with Reason and Intellect , because we find by experience , that if other signs be given them , which tho' in reality more faci●e , yet are not suited to their innate capacity ▪ they take no notice of the Commands there hinted ▪ For Examples sake , if we should command a Dog to seek out for a Handkerchief lost a Month ago in a Garden , Closet or such like place , as we usually command him to fetch a Stick , just now thrown into a Pond , the Dog , instead o● speeding to the Garden or Closet , where it i● signified that the Handkerchief was lost , will doubtless make directly to the Pond to look out for the Staff : Whence it plainly appears , that the Dog does not perform what he is commanded , as apprehending the Words spoken or Signs given him ; but because the whole Machin of his Body hath obtain'd that habit and disposition by Labour and oft repeated Instructions , so that as soon as the Sign is given him , the Animal Spirits are streight carried into the Nerves and Muscles , which dispose him to the doing of this or that thing ; and so no wonder if the Dog of Lovain , having the Letters made fast to his Collar , made streight for Brussels , went to the House assign'd , and having discharg'd himself of his Letters , return'd directly to his Master , since all things which we see done by Beasts , and which so much stir up Admiration in us , are the meer effects of their Passions and Motions , by which we teach them and have a curb upon them , through the long exercise , labour and use which we are at in the Instructing of them . LI. Certain Actions of Animals , wherein they even seem to exceed Men in Sagacity of Wit. There are now remaining to be Explained those Actions of Brutes which constitute the fifth Class , namely those Actions wherein they discover so much acuteness of Wit , that they seem even to exceed in that Rationality by which Men are commonly differenc'd and distinguished from them . In the first place it is admirable to see how delicately and ingenuously some Birds proceed in making of their Nests . For Example , when the Swallows begin to be sensible of that alteration of their Condition , which desire and eagerness of Propagation is likely to bring upon them , they design their Nests after this manner : The biggest Straws and strongest of the Chaff being first laid as a foundation , they afterwards lay the softer and the lesser over : To this Fabrick they use Mud for a Cement , and daub their Nest all over with it , as with Mortar , and when this Mud is wanting , they fly to the next Pond , and there wetting the end of their Wings gather up Dust , with which as with Mud , they plaister up the rough places , close up the gaping Holes , and in all their Architecture so accommodate the dimension of their Fabrick to the shape of their Body , that they may have room to turn round so as commodiously to hatch upon their Eg● ▪ and in such manner to plant themselves , that they may distribute an equal force of heat to all parts . And now their Nest being strewed wi●h Chaff , Moss and Feathers they lay ●heir Eggs , sit upon them , hatch their Chickens , and feed them . Another argument of Providence in Animals is , that upon the approach of Winter they remove into foreign Regions , the better to consult ▪ for their advantage and subsistence . Of this sort are the Cranes , who every year in Spring time fly from South to North , and in Autumn fly back from North to South . The third Argument is , that some Animals presage things to come , and by a certain Cognition foretel those Phaenomena in the Air which hang over us ; as the Heron , when she flies very high , and soars more than usually above the Clouds , predicts future Rain . The Kite , on the contrary , mounting up to the highest Region of the Air , and there hovering till the Evening , proclaims fair Weather . The same thing we find by experience of other Animals ; for Example , the Cat , the Mole , the Bull , the Ram , the Dolphin , the Duck , the Cock , &c. which either by Voice uttered , by Crowing , by Frisking about , or the like , presage various sorts of Weather . LII With what impulse Birds are carried in building their Nests . As to the Birds building their Nests at a certain season of the year , afterwards sitting upon their Eggs , hatching their Young Ones , nourishing defending and covering them , &c. this ariseth only from the mutation of the temperature of their Body ; by which the Fibres , and their Contextures , in those Organs , especially which serve to Propagation , are so dispos'd , that that affection is easily thence derived , which prompts them to build their Nests , brood upon their Chickens , feed them when hatcht , &c. For to close with the Sentiment of the most Noble DIGBY , I think there is no Man will deny but that the desire of Copulation in Birds , proceeds not from any impulsion or design of begetting their like , but from the temperament of the Blood and Spirits , produc'd by quality of the Food wherewith they are fed , together with the Season of the Year ; however , after Copulation it must of necessity follow , that the Eggs grow in the Belly of the Female , and still increasing create trouble to her , and stir up a desire in her of being at rest , and of freeing her self from the burthen she labours with . And as Dogs and Cats , when necessity urges , are wont to look about for some commodious place , not only for the bringing forth of their Young , but also for voiding their Excrements . So Birds when the weight of their Eggs burthens them , and renders them unapt for flight , begin to indulge themselves very much to their repose , and take much delight in soft and warm places , so that Chaff , Moss , and the like , please them with their softness , which they therefore carry to their Nest . But that this action is not guided by Reason , is evident even from the very manner by which it is performed : For when they light upon Chaff , or any other thing commodious for the Litter of their Nests , they do not , as I have often observ'd in several Birds , carry it directly to their Nests , but first make towards the Bough of some Tree , or the Top of some House , and there with this piece of Housholdstuff in their Bill , hop up and down for some time , then leaving this place , fly to another , where after a small time of some such like diversion , they at length betake themselves to their Nests ; wherein if the Straws or chaffy Stalks should lie in a confused heap , they would be subject to be prickt by the sharp ends of them ; whereupon they turn them up and down , till all the said sharp ends be laid smooth , and their decumbiture be softned and made easie . Which we only seeing done , and comparing the Production thereof with the Method which we our selves should use in an exercise of the like actions , may possibly allow this disposition of Chaff Stalk to be prudent and directed by Reason . But whereas it proceeds from Birds themselves , it is no other than a frequent turning this way and that , of Bodies which offend the Sense , till such time as they bring no further pain or trouble with them . As to the dawbing over their Nest with Mud , it may be ascribed to the vehement heat which predominates at that time of the Year ; for hence it comes to pass , that they delight to be conversant in Mud , Water and Sand , without which all Birds would quickly sicken and be deprived , first of sight and then of Life ; but the same Mud , which , because it refrigerates or cools , they carry to their Nest in their Bills and Feet ; the same , I say , when it begins to grow hard and troublesom , they wipe off , and making a hole through in the place where they rest , they fly out to get that which is fresh and cool . LIII . Those Birds are not led by prudence , which remove from one Region to another . As to those Birds , which upon the approach of Winter , remove from one Region to another . It is not to be ascribed to their Prudence or Providence , but to their Natural Inclination , by which they are easily impelled to remove from a colder to a warmer place , into which afterwards the same temperament succeeding anew , they return again , provided the said Regions be not very far distant from each other , and not uneasie in access ; otherwise I am apt to believe that the said Birds would betake themselves into certain hiding Holes like Dormice , Serpents and Insects , and there lie dormant all the Winter , which might be proved by many instances , but it will be sufficient to mention the Swallows , which in the congealed Lakes of Poland , lie all the Winter time unmoved , and as it were , dead ; but the returning heat dissipating the Frost , and the Ice dissolving into Water , they rise out of their Lakes , and betake themselves anew to their flight . Which when that Possevinus , who went Embassador into Russia , as Gassendus mentions , would not give credit to , a great flake of Ice was commanded to be brought into his Stove , in which a cluster of Swallows lay crouded together ; which when the Ice began to melt by the heat of the place , were observed by degrees to move Feet , Wings , Head , and then the whole Body ; lastly to fly out ; but after some rounds of flight about the Stove , they fell down dead upon the ground , as having undergone too hasty and unwonted a change of Air. Much of the same nature is what hath been observed of other Birds , particularly in Germany , in Oaks and other hollow Trees , when cut down , Kites and Cuckows are found to have hid themselves there all the Winter . Something like to this may be also thought of the Storks , since it is yet undiscovered whence they come , and whither they betake themselves . Whence PLINY in his First Book , Chap. 23. No Man discerns when they depart , tho' it is apparent that they do go ; nor knows when they come , tho' we find that they do come . Both doubtless , i. e. their coming and going is done in the Night time ; and tho' they are commonly seen to fly to and fro , yet they are thought never to make their first approach but by Night . From which words it plainly appears , that the Storks come not from any far Region , nor go from us into any very remote parts , but so keep their way along the Ponds and Lakes , that neither their ingress nor egress can well be observ'd by us . LIV. How some Animals seem to portend future things . Lastly , As to Beasts seeming to foreknow some things , we need not for this ascribe to them any thing of Divination , or acknowledge any latent Rationality in them , for the making out of these presages ; since they depend only upon those mutations which happen in exteriour Objects ; which when Animals have received into their Bodies , they are touch'd with certain affections , which dispose them to Crowing or shaking of their Wings . For there are always in the Air some forerunners of fair Weather , Tempests , Winds , &c. which when Animals foresee , it cannot be but that certain affections must arise in those Organs which dispose to the forenamed Motions : For in the vivacity of their Senses Brutes excel Men ; and as those who are depriv'd of sight , hear more quick than others ; so it seems that Animals being void of Mind , and destitute of all Perception , have this recompence , that they have their Senses more acute . FINIS . Notes, typically marginal, from the original text Notes for div A50014-e4390 ANAXIMINES . ANAXAGORAS . ARCHELAUS . HERACLITUS DEMOCRITUS Notes for div A50014-e56160 The first Mode . Bar-ba-ra . VIII . The first Figure . Ce-la-rent . Da-ri-i . Fe-ri-o . Ce-sa-re . X. The second Figure . Ca-me-stres . Fe-sti-no . Ba-ro-co . XI . The third Figure . Dar-ap-ti . Fel-ap-ton . Di-sa-mis . Da-ri-si . Bo-car-do . Fe-ri-son . Notes for div A50014-e184380 Figure 11. Figure 3. How it com●s to pass that liquor doth not run out of . XII . Figure 4. a Tasting Pipe. Figure 5. Figure 6. Figure 7. Figure 8 ▪ Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 14. Notes for div A50014-e254350 Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 20. Figure 21. Figure 20. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29 ▪ Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Notes for div A50014-e334650 Figure 35. Fig. 36. Figure 37. Figure 38. Figure 38. Figure 39. Fig. 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. Figure 47. Figure 48. Figure 49. Figure 50. Figure 51. Figure 52. Figure 53. Figure 54 Figure 55. Figure 56. Figure 57. Figure 58. Figure 59. Notes for div A50014-e425340 III. What kind of Heat it is wherein the Life of Animals doth consist Figure 60. Notes for div A50014-e491230 Figure 62. Figure 63. Figure 64. Figure 65. Figure 66. Figure 67. IV. The Tongue is the Organ of Tasting . Figure 68. Figure 69. Figure 69. Figure 72. Figure 73. Figure 74 Figure 75. Figure 76. Notes for div A50014-e629520 III. Ethicks ●●rts the Diseases of the Soul. III. What a Promise is . II. Of the three kinds or forms of Government . Notes for div A50014-e714460 Figure 1. Figure 2 Figure 3. Figure 50. in the Institution . Figure 4. Figure 5. Figure 6. Figure 7. Notes for div A50014-e743920 I. Why boiling water riseth up to the very bri● of the Vessel , when before it reached only half way . Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Notes for div A50014-e798120 Figure 14. Figure 29. in the Institutions . Figure 15. Figure 16. Figure 17. Figure 27. in the Institutions . Notes for div A50014-e840560 Figure 18. IV. Why Spring Water is fresh . III. The Red-Sea is not higher than the Mediterranean . Figure 46 ▪ in the Institution . Figure 19. Figure 20. Notes for div A50014-e886280 Figure 21. Figure 22. Figure 45. in the Institution . Notes for div A50014-e922120 Figure 23. Figure 25. Notes for div A50014-e958500 III. Why the Roots of some Plants are round , others long and slender . Figure 27. 〈…〉 ●nd other such like Trees , do only send forth Branches at their tops . Notes for div A50014-e1031060 Figure 28. VII . What the cause is of marks imprinted in Births .