^6 5" a t \ ENCTCLOPjEDIA B RITANNICA; O R, A DICTIONARY o r ARTS, SCIENCES, AND MISCELLANEOUS LITERATURE; Conflrufled on a Plan, BY WHICH THE DIFFERENT SCIENCES AND ARTS Are digefted into the Form of Diflindl TREATISES or SYSTEMS, COMPREHENDING The History, Theory, and Practice, of each, according to the l.ateft Difcoveries and Improvements; A XT> FUL L EXPLANATIONS given of the VARIOUS DETACHED PARTS OF KNOWLEDGE, WHETHER RELATING TO Natural end Artificial Objects, or to Matters Ecclesiastical, Civil, Military, Commercial, &c. Including Elucidations or the moft important Topics relative to Religion, Morals. Manners, and the Oeconomy of Life : TOGETHER WITH A Description of all the Countries, Cities, principal Mountains, Seas, Rivers, 6c. throughout the W o r l d ; A General History, Ancient and Modern, of the different Empires, Kingdoms, and States** A N D An Account cf the Lives of the moft Eminent Perfons in every Nation, from the earlieft ages down to the prefent times. ' mii riim rs of the bfft Authors, in few al lancet; the m*ft approved DiShnariee, as well of general fueme as of its parti L ^ 'cuir bran bes ■ the Franlattions, Journals, and Memoirs, of learned Sock-ties, Loth at home and abroaa the MS. Lefiurej of Eminent V rofefor sol different fiances ; a,id a variety of Original Mater isle, fttrnijheJ by an Extenfive Correfpondetsce. 2^5 THIRD EDITION, IN EIGHTEEN VOLUMES, GREATLY IMF ROVED. ILLUSTRATED WITH FIVE HUNDRED AND FORTY-TWO COPPERPLATES. VOL. XILI. ' TnZoCI r DISCANT, ET AMENT MEMINISSE PERITI. EDINBURGH. PRINTED FOR A. BELL AND C. MACFARQUHAA* mdccxcvil ®ntereO (n ®tatfonew ®)alt in Cernw of t6e aa of f artiamtnt. Encyclopedia B RITANNICA. N E H miih."K TEHEMTAK, or Nhemtas, fon of Hach?liah, J.^1 was born at Babylon during the captivity, (Neh. i. 1,2, &c.) He was, according to fome, of the race of the priefis, but, according to others, of the tribe of Judah and the royal family. Thofe who maintain the fir ft opinion, fupport it by a paffage in Ezra, (x. jo,) where he is called a prieft; but thofe who believe that he was of the race of the kings of Judah, fay, ift, That Nehemiah having governed the republic of the Jews for a confi lerable time, there is great probabili¬ ty he was of th"t tribe of which the kings always were. 2dly, Nehemiah mentions his brethren Hanani, and fome other jews, who coming to Babylon during the captivity, acquainted him with the fad condition of their country, jdly, The office of cup bearer to the king of Perfia, to which Nehemiah was promoted, is a further proof that he was of an illuftrious family. 4thly, He excufes himfelf from entering into the in¬ ner part of the temple, probably becaufe he was only a laic, (Neh. vi. 11.) “ Should fuch a man as I flee ? And who is there that, being as 1 am, would go into the temple to fave his life The fcripture (Ezra. ii. 62. Nehem. vii. qj.) calls him Nr.unn tirjhatha, that is to fay, “ cup-bearer for he had this employment at the court of Artaxerxes Longimanus. He had an exceeding great tendernefs for the country of his fathers, though he had ne¬ ver feen it ; and one day as fome Jews newly come from Jerufalera acquainted him with the mi- ferable eftate of that city, that its walls were beat down, its gates burnt, and the Jews were become a reproach among all nations; he was fenlibly affec- Hed with this relation ; he fafted, prayed, and hum¬ bled himfelf before the Lord, that he would be fa¬ vourable to the defign he had then conceived of afking the king’s permiffion to rebuild Jerufalem. The courfe of his attendance at court being come, he prefented the cup to the king according to cuftom ; but with a countenance fad and dejefted ; which the king obfer- ving, entertained fome fufpicion, as if he might have had fome bad defign ; but Nehemiah (ii.) difcovering the occalion of his difquiet, Artaxerxes gave him leave to go to Jerufalem, and repair its walls and gates: but, however, upon this condition, that he ffiould re¬ turn to Court at a time appointed. Letters were made out, diretted to the governors beyond the Euphrates, with orders to furnifh Nehemiah with timbers neceffhr A- for covering the towers and gates of the city, and the houfe defigned for Nehemiah himfelf, who was now ap¬ pointed governor of Judea, in the year of the world 335°. Vol.XIII. Part I» N E H Nehemiah being arrived at Jerufalem with the kintr’s Nehemlah, commiffion, went round the city ; and having viewed the condition of the walls, affembled the chief of the people, produced his commiffion, and exhorted them to undertake the reparation of the gates and walls of the city. He found every perfon ready to obey him ; whereupon he immediately began the work. The enemies of the Jews, obferving thefe works in fuch foi wardnefs, made ufe of all the means in their power to deter Nehemiah from this undertaking, and made feveral attempts to furprife him ; but finding.that their defigns were difeovered, and that the Jews kept upon their guard, they had recourfe to craft and ftratagem, endeavouring to draw him into an ambufeadeinthefidds, where they pretended they would finifh the difpute at an amicable conference : but Nehemiah gave them to underftand, that the work he had begun required his per fonal attendance ; and therefore he could not come to them. He lent the fame anfwer to four feveral melfages that they lent one after another on the fame fubjedi, (id. iv. and vi.) Sanballat, the chief of the enemies of the Jews, to¬ gether with his aflociates, wrote word, that a report was fpread that the Jews were building the walls of Jeru¬ falem only with a defign to make it a place of lirength, to fupport them in an intended revolt ; that it was faid alio that Nehemiah had fuborned falfe prophets to favour his defigns, and to encourage the people to choofe him king ; and to Hop the courfe of thefe ru¬ mours, he advifed him to come to him, that they might confer together, and take fuch refolutions as ffiould lie found convenient. Nehemiah gave himfelf no trouble on this account, but returned for anfwer, that, all thofe accufations were falfe and made at random. About the fame time he difeovered, that a falfe pro¬ phet, called Shemaiab, had been corrupted by his ene¬ mies, and that fome of the chief of the city were fe- cretly in confederacy with them. Yet all this did not difeourage him : he went on with his w'ork, and hap¬ pily completed it in two and fifty days after it had been begun. Then he made a dedication of the walls, of the towers, and of the gates of Jerufalem, with the folem- nity and magnificence that fuch a work required. He feparated the priefts, the Levites, and the princes of the people, into two companies, one of which walked , to the fouth and the other to the north, on the top of the walls. Thefe two companies wrere to meet at the temple. The proceffion was accompanied with mufic both vocal and inftrumental ; and when they were all come to the temple, they there read the law, A offered N E H JJefccrmah. offered facrlfices, and made great rejoicings C And as the feaft of the tabernacle happened" at the ^me time, it was celebrated with great folemnity, {id. viii.) Nehe- miah obferving that the compafs of the city was too large for its inhabitants, he ordered tnat the. chief of the nation fhould fix their dwelling in the city ; and caufed them to draw lots, by which a tenth part of the whole people of Judah were to dwell at Jerufalem, {id. xi.) i hen he applied himfelf to the reformation of fuch abufes as had crept into the adminiftration of the public affairs. He curbed the inhumanity of the great ones, wTho held in a flate of flavery the fons and daughters of thofe that were poor or unfortunate, keep* ing their lands in poffeffion, which thefe poor people had been obliged either to mortgage or to fell to the rich. Another abufe there was, which Ezra had in vain attempted to redrefs, that they had contrafted marriages wuth ftrange and idolatrous women. Nehc- miah undertook to diffolve thefe marriages, fucceeded in it, and fent away all fuch women as had been taken againft the exprefs command of the.law, {id. ix.) Ha¬ ving likewife obferved, that the priefts and Levites were obliged to take refuge wherever they could, and fo the miniftry of the temple was not attended or per¬ formed with that decency it ought, becaufe they did not receive the revenues that the law had appointed for their fubfiftence ; he obliged the people punihially to pay the minifters of the Lord what was due to them, and enjoined the pnefts and Levites duly to attend on their refpedlive duties, and to difeharge their func¬ tions, [id. xiii. to, ii. &c.) He enforced theobferva* tion of the fabbath, which had been much negle&ed at Jerufalem, and would not permit ftrangers to come in to buy and fell, but kept the gates of the city (hut all that day. And, to perpetuate as much as was pof- fible thefe good regulations which he had newly effa- blifiied, he engaged the chief men of the nation fo* lemnly to renew the covenant with the Lord. This ceremony was performed in the temple, and an in- ftrument was drawn up, which was figned by the prin¬ cipal men, both priefts and people, {id. ix. x.),in the year of the world 3551. We read in the books of Maccabees, (2 Macc. i. 19, 20, 21, &c.) that Nehemiah fent to fearch for the holy fire, which before the captivity of Babylon the priefts had hid in a dry and deep pit; but not finding any fire there, but inftead thereof a thick and muddy water, he fprinkled this upon the altar ; whereupon the wood which had been fprinkled with this water took fire prefently as foon as the fun began to appear. Which miracle coming to the knowledge of the king of Perfia, he caufed the place to be encompaffcd with walls where the fire had been hid, and granted great favours and privileges to the priefts. It is recorded in the fame books, (2 Macc. ii. 13, 14 ) that Nehe- miah erefted a library, wherein he placed whatever he could find, either of the books of the prophets, of David, and of fuch princes as had made prefents to the temple. Laftly, be returned to Babylon {id. v 14. and xiii. 6,) according to the promife be had made to king Arta- xerxes, about the thirty fecond year of this prince, in the year 3563. From thence he returned again to Je- infalem, where he died in peace, about the year 3580, having governed the people of Judah for about thirty years. Neius. ] NET The book which in the Englifh bible, as alfo in the Nehemiah Hebrew, has the name of Nehemiah, in the Latin bible is called the book of Efdras ; and it muft be confeffed, that though this author fpeaks in the firft perfon, and though at firft reading one would think that he had writ it day by day as the tranfa&ions occurred, yet there are fome things in this book which could not have been written by Nehemiah himfelf; for example, memorials are quoted wherein were regiftered the names of the priefts in the time of Jonathan the fon of Elia- fhib, and even to the times of the high pried Jaddus, who met Alexander the Great. Thefe therefore mull have been added afterwards. It may well be queftioned, whether this Nebemiah be the fame that is mentioned in Ezra, (ii. 2. and Neh. vii. 7.) as one that returned from the Baby lonifh captivity under Zerubbabel; fince from the firfl year of Cyrus to the twentieth of Artaxerxes Longi- manus, there are no lefs than ninety-two years inter¬ vening ; fo that Nehemiah muft at this time have been a very old man, upon the lowed computation an bun* dred, confequently utterly incapable of being the king’s cup bearer, of taking a journey from Suftian to Jeru¬ falem, and of behaving there with all the courage and aftivity that is recorded of him. Upon this prefump- tion, therefore, wc may conclude that this was a dif¬ ferent perfon, though of the fame name, and that Tir- fhatha (the other name by which he is called, Ezra ii* 63, and Neh. vii. 65.) denotes the title of his office, and both in the Perfian and Chaldean tongues was the general name given to the king’s deputies and gover* nors. NEHOW, one of the Sandwich Iflands, difeovered by Captain Cook in his laft voyage to the Pacific Ocean : they are eleven in number, and are fituated from 18° 4/ to 22° 15' N. Lat. and from 1540 56' to 16o° 24' W. Long. They are not very particularly deferibed in any account that has hitherto appeared. NEIGHBOUR, i.One who dwells or is feated near to another (2 Kings iv. 3.) 2. Every man to whom, we have an opportunity of doing good (Matt. xxii. 39.) 3. A fellow-labourer of one and the fame people (Aft. vii. 27.) 4. A friend (Job. xvi. 21.) At the time of our Saviour, the Pharifees had reftrained the word neighbour to fignify thofe of their own nation only, or their own friends; being of opinion that to hate their enemy was not forbidden by their law. But our Saviour informed them, that the whole world were their neighbours; that they ought not to do to ano¬ ther what they would not have done to themfelves; and that this charity ought to be extended even to their enemies (Matt. v. 43. Luke x. 29, &c.) NEISSE, a handfome town of Sileiia in Germany* and the refidence of the biftiop oi Breflaw, who has a magnificent palace here. The air is very wholefome, and provifions are cheap.; the inhabitants carry on a great trade in wine and linen. This place fuffered greatly by an inundation and fire in 1729. It was taken by the Pruffians in 1741, who augmented the fortifica>. tions after the peace in 1742, and built a citadel to which they gave the name of PruJJia. It is feated on a ri¬ ver of the fame name, in E Long. 17.35. N.Lat.50.32. NEIUS mojjs (anc. geog.), at the foot of which flood Ithaca, a town of the iilaad of that name, (Homer). 8, - NELSON; N E L [ Kclfon. NELSON (Robert), a learned and pious Engliflr gentleman, was the fon of Mr John Nelfon a conhder- able Turkey merchant, and was born in June 1656. He had the firft part of his education at St Paul’s fchool, London ; but the principal part was under a private tutor in his mother’s houfe, after which he ftudied at Trinity College, Cambridge. In 1680 he was chofen a fellow of the Royal Society ; being pro¬ bably inclined to receive that honour out of refpeft to bis friend 3nd fchool-fellow Dr Edmund Halley, for whom he had a particular regard, and in whofe com¬ pany he fct out in his travels abroad the December following. In the road to Paris, they faw the re¬ markable comet which gave rife to the cometical allro- romy by Sir Ifaac Newton ; and our author, appa¬ rently by the advantage of his fellow-traveller’s in- Itruftions, fent a defcription of it to Dr, afterwards Archbifhop, Tillotfon, by whom he was very much efteemed. Before he left Paris, he received a letter from a friend in the Englifh court, inviting him to purchafe a place there, by the promife of his affiltance in it. This propofal was made by Mr Henry Saville, brother to Lord Halifax : he had been fworn vice- chamberlain of the king’s houfehold in December 1680, and was at this time envoy from Charles II. to the court of France ; though now at London, whence he fent this offer in a letter to Mr Nelfon ; who being but young, and having a great affeftion for King Charles and the duke of York, was pltafed with the thoughts of figuring it near their perfons . but as he could not refolve upon an affair of fuch confe- quence without the approbation of his mother and uncle, he firft applied to Tillotfon to found them, with sffurances of determining himfelf by their judgment and advice, including alfo that of the Dean ; who finding them both averte to it, he thereupon dropped the mat ter, and purfued his journey with his fellow-traveller to Rome. Here he fell into the acquaintance of Lady Theophila Lucy, widow of Sir Kingfmill Lucy of Broxburne in Hertfordfhire, bart. and fecond daugh¬ ter of George earl of Berkeley, who foon difeovered a ftrong paflion for him : this concluded in marriage, after his arrival in England in 1682. But it was fome time before Ihe confeffed to Mr Nelfon the change of her rejigion ; which was owing to her acquaintance with Boffuet and converfations at Rome with Cardinal Philip Howard, who was grandion of the earl of Arundel, the colledlor of the Arundelian marbles, &c. and had been raifed to the purple by Pope Cle¬ ment X. in May 1 675. Nor was this important al¬ teration of her religious fentiments confined to her Own mind, but involved in it her daughter by her firft hufband, whom ftie drew over to her new religion ; and her zeal for it prompted her even to engage in the public controverfy then depending. She is the fup- poled authorefs of apiece written in <686, qto, un iter the title of, “ A difeourfe concerning a judge of eontroverfy in matters of religion, Ihowing the necef- fity of fuch a judge.” This misfortune touched her hufband very nearly. He employed not only his own pen, but thole of his friends Dr Tillotfon and Dr Hickes, to recover her: but all proved ineffe&ual; and fhe continued in the tommuiiiun of the church of Rome till her death. She was a perfon of fine fenfe and^underftanding. Dr 3 1 N E L Tillotfon particularly laments her cafe on that ac¬ count ; and even feems not to be entirely free from all apprehenfions of the influence (he might have upon her hufband in this important affair. But Mr Nelfon’s re¬ ligion was too much the refult of his learning and rea- fon to be fhaken by his love, which was equally fteady and inviolable. Her change of religion made no change in his affedtions for her; and when fhe relap- fed into fuch a bad ftate of health as obliged her to go and drink the waters at Aix, he attended her thi¬ ther in 1688 : and not liking the profpedt of the public affairs at home, he proceeded to make a fecond trip to Italy, taking his lady, together with her fon and daughter by her former hufband, along with him. He returned through Germany to the Hague, where he (laid fome time with Lord Durfley, who was married to his wife’s fifter. From the Hague he arrived in England, in the lat¬ ter end of i6y* ; where being averfe to the Revolu¬ tion, he declared himfelf a nonjuror, and left the com¬ munion of the church of England, in this laft point he had confulted Dr Tillotfon, and followed his opi¬ nion, who thought it no better than a' trick, (de- teftable in any thing, and efpecially in religion), to join in prayers where there was any petition which was held to be finful. Thus, notwithftand- ing their difference of opinion refpedting the lawTul- nefs of the revolution, the friendfhip between them remained the fame ; and the good archbifhop expired in his friend’s arms in 1694. Nor did Mr Nelfon’s friendfliip end there: he continued it to his grace’s widow, and was very inftrumental in procuring her penfion from the crown to be augmented from 400 1. to 600\. per annum. It is very remarkable, that the great regard he had always fhown to Tiilotfon, added to his own reputation for learning, judgment, and candour, induced Dr Barker, who publifhed the arch- bifhop’s pofthumous fermons, to coufult our author on that occaiion. Among the manuferipts, there was found one difeourfe wherein the archbifhop took an occafion to complain of the ufage which he had re¬ ceived from the nonjuring party, and to expofe, in re¬ turn, the inconfifteney of their own condudt; re¬ marking particularly, that, upon a juft comparifon of their principle of non-refiftance with their ;. (Infeription). In it {lands a Roman amphitheatre, which is iliil al- moft entire. Now N'ijmes in Languedoc. NEMEA (Strabo, Livy) j a river of Achaia, run¬ ning between Sicyon and Corinth, the common boun¬ dary of both territories, and falling into the Coriii* thian bay. Nemea (anc. geog ), fituated between Cleonae and Philus in Argolis; whether town, diftrict, or other thing, uncertain: there a grove flood in which the Argives celebrated the Nemean games, and there hap¬ pened all the fabulous circumltances of the Nerneau lion. The diftridl Nemea is called Bemlmadia, (Pli¬ ny) ; a village, Bembina, Handing near Nemea, (Stra¬ bo). Stephanus places Nemea in Elis ; though not in Elis, but on its borders ; Pliny, erroneoufly, in Ar¬ cadia, In the adjoining mountain is frill ihown the den of the lion, diilant 15 ftadia from the place Ne¬ mea, (Paufanias) ; in which Hands a confiderable temple of Jupiter Nemieus and Cieomeus, from the vi¬ cinity of thefe two places. This place gave name to the Nemasan games, celebrated every third year. NEMEAN GAMES, fo called from Nemea, a vil¬ lage between the cities of Cieonse and Philus, where they were celebrated every third year. 1 he exerciiea were chariot-races, and all the parts of the Pentathlum. Thefe games were inilituted in memory of Ophdtes or Archemorus, the fon of Euphetes and Creufa, and who was nurfed by Hypfipele; who leaving him in a mea¬ dow while Ihe went to (how the beliegers of Thebes a fountain, at her return found him dead, and a ferpent twined about his neck : whence the fountain, before called Langia, was named Archemorus ; and the cap- tains, to comfort Hyplipele, inftituted thefe games.— Others aferibe their inftitution to Hercules, after hia victory over the Nemean lion. Others allow, that they were inftituted firft in honour of Archemorus 5 but intermitted, and revived again by Hercules. The viftors were crowned with parfiey, an herb ufed at funerals, and feigned to have fprung from Archcmo- rus’s blood. The Argives prefided at thefe games. NEMES1ANUS (Aurelius Olympius), a Latin poet who was born at Carthage, and fiourilhed about the year 281, under the emperor Cams, and his fons Carinus and Numerian: the laft of which emperors was fond of poetry that he cootefted the glory with 7 Nemefianusj N E N [5 NemeCs Nemefianus, who had written a poem upon fifiling and II maritime affairs. We have ftiil remaining a poem of Nenagh. our aut]lor called Cyr.egeticon, and four eclogues : they w ere publifhed by Paulus Manutius in 1538 ; by Bar- thelet in 1613; at Leyden in 1653, with the notes of Janus Vliths. Giraldi hath preferved a fragment cf Nemefianus, w'hich was communicated to him by Sannazarius, to whom we are obliged for our poet’s works : for having found them written in Gothic cha- radters, he procured them to be put into the Ro¬ man, and then fent them to Paulus Manutius. Al¬ though this poem hath acquired fome reputation, it is greatly inferior to thofe of Oppian and Gratian upon the fame fubjedt; yet Nemefianus’s iiyie is' natural enough, and has fome degree of elegance. The world was fo much pofleffed with an opinion of his poem in the eighth century, that it was read among the daffies in the public fchools, particularly in the time of Char¬ lemagne, as appears from a letter of the celebrated Hincmar bifhop of Rheims to his nephew Piincmar of Laon. NEMESIS, in Pagan wovfhip, the daughter of Jupiter and Neceffity, or, according to others, of O- ceanus and Nox, had the care of revenging the crimes which human juftice left unpunifhed. She was alio called Adrajicea, becaufe Adrailus king of Argos firit raifed an altar to her j and Rhamnujia, from her ha¬ ving a magnificent temple at Rhamnus in Attica.— She had likewife a temple at Rome in the Capitol. She is reprefented with a Hern countenance, holding a whip in one hand and a pair of fcales in the other. NEMESIUS, a Greek philofopher who embraced Chriilianity, and was made biihop of Emefa in Phoe¬ nicia, where he had his birth : he flourifhed in the be¬ ginning of the fifth century. We have a piece by him, intitled De nalura hommis, in which he refutes the fatality of the Stoics and the errors of the Ma* nichces, the Apollianarills, and the Eunomiaus but he efpoufes the opinion of Origen concerning the pre- < xiftence of fouls (a). This treatife was tranflated by Valla, and printed in 1535. Another verfion was af¬ terwards made of it by Eilebodius, and printed in 1665 ; it is alfo inferted in the Bibli.theca patrutn> in Greek and Latin. Laftly, another edition was publiih- ed at Oxford in 1671, folio, with a learned preface, wherein the editor endeavours to prove, from a paffage in this book, that the circulation of the blood was known tp Nemefrus j which, however, was fince fhown to be a mi Hake by Dr Freind, in his Hi/lory of Phyjic. NEM1NE contradicente, “ none contradicting it a term chiefly ufed in parliament when any thing is carried without oppofition. NEMOURS, a town of the Me of France in the Gatinois, with the title of a duchy. It is feated on - the river Loing, in E. long. 2. 45. N. lat. 48. 15. NENAGH. a poll; and fair town of Ireland, in the county of Tipperary, and province of Muntier, 75 miles irom Dublin. It is fituated on a branch of the river Shannon which runs into Lough-Derg. Here 1 N E o hands the ruins of an old caflle called Nenagh-round. Nenia Alfo thofe of an hofpital founded in the year 1 200, ii for canons following the rule of St Auguftin. It was Neorneuia. dedicated to St John the Baptiif, and was ufually v called Teachon, or St John’s houfe. In the reign of Henry III. a friary for conventual Francifcans was alfo founded here, and efteemed the richelt foundation of that order in the kingdom. Here is a barrack for two troops of horfe. This town was burnt 011 St Stephen’s day 1348, by the Irifh. The fairs held here are four. NENIA, or N^nia, in the ancient poetry, a kind of funeral fong fung to the mulic of flutes at the ob- fequies of the dead. Authors reprefent them as- forry compofitions, fung by hired women-mourners called Prccjictf. The firit rife of thefe Nenia is aferibed to the phyficians. In the heathen antiquity, the goddefs of tears and funerals was called Nenia ; whom fome fuppofe to have given that name to the funeral fong3 and others to have taken her name from it. NEOCESARIA, (Pliny), a town of Pontus on the fouth or the left fide of the Lycus. About the year 342, when Leontius and Salluitius were confuls, it was entirely ruined by a dreadful eauhquake, no edifice having withftood the violence of the fhock, ex¬ cept the church and the bifhop’s habitation, who was faved, with the clergy and fome other pious perfonss while the red of the inhabitants were buried in its ruins. NEOMAGUS, (Ptolemy) ; Noviomacjus, (An- tonine) ; a town of the Regni in Britain : now- thought to be Guildford in Surry, (Lhuydj; or Croy¬ don, (Talbot). But Camben takes it to be Wood- cote, two miles to the fouth of Croydon, where traces of an ancient town are ftiil to be ieen. Neomagus, (Ptolemy;) Noviomagus, (Antonine a town ol the 1 riviri on the Mofelle, Now Numagent 14 miles eaft, below Triers. Neomagus, (Ptolemy;) Novicnnagus Lexovionitn9 (Antonine;) a town of Gallia Celtica. Now Lijeux, in Normandy. Neomagus, (Ptolemy), Noviomagus Nemetum, (An¬ tonine). Now Spire, a city of the Palatinate, on the left or weft fide of the Rhine. Neomagus, ('Ptolemy); a town of Gallia Narbo- nenfis, on the confines of the Tricaftini. Now Nysns in Dauphine. _ NEOMENIA, or Noumenia, a feftival of the an¬ cient Greeks, at the beginning of every lunar month* which, as the name imports, was obferved upon the day of the new moon, in honour of all the gods, but efpecially, Apollo, who was called Neomenm, be- caufc the fun is the fountain of light ; and whatever diftintdion of times and leafons may- be taken from other planets, yet they are ail owing to him as the original of thofe borrowed rays by which they fhine. Ihe games and public entertainments at thefe fe-> ftivals were made by the rich, to whofe tables the poor flocked in great numbers. The Athenians at. thefe. m0rf Prol)ablert}!3t he and Origen both brought their opinion with them from the fchoola of phikuopby, than that either of them borrowed it from the other. See Metaphysics, Part 3d. chap, a, “ N E P [ Neophytes thcfe times offered folemn prayers and facrinces for the profperity of their country during the enfuing ^Ncpeta. mpnt.|u gee Games. v t,. rp|ie jews jia(j aif0 their neomenia, or feaft of the new moon, on which peculiar facrifices were appoint¬ ed ; and on this day they had a fort of family enter¬ tainment and rejoicing. The moft celebrated neome- r.ia of all others was that at the beginning of the civil year, or firft day of the month Tifri, on which no fervile labour was performed : they then offered par¬ ticular burnt-facrifices, and founded the trumpets of the temple. The modern Jews keep the neomenia on¬ ly as a feaft of devotion, which any one may obferve or not as he pleafes. NEOPHYTES, “ new plants a name given by the ancient Chriftians to thofe heathens who had newly embraced the faith; fuch perfons being confidered as regenerated, or born a-new by baptifm. The term neophytes has been alfo ufed for new priefts, or thofe juft admitted into orders, and fometimes for the no¬ vices in monafteries. It is ftiil applied to the converts made by the miffionaries among the infidels. NEPA, in zoology, a genus of inftdts belonging to the order of hemiptera. The roftrum is infledted ; the antennae are fhorter than the thorax ; and the hind- feet are hairy, and fitted for fwimming. There are fe- ven fpecies. The four wings are folded together crofs- wife, with the anterior part coriaceous. The two fore feet are cheliform, or refemble the claws of a crab ; the other four are formed for walking. We have but three fpecies of this genus, all three of which are found in the water, where they dwell, as do their larvae and chryfalids. It is likewife in the water that wc find the eggs of the water-fcorpion. Thofe eggs, of an oblong fhape, have at one of their extremities two or more briftles or hairs. The infedt finks its egg into the ftalk of a bull-rufh or fome other water- plant, fo that the egg lies 'concealed, and only the hairs or briftles ftick out, and are to be feen. One may eafily preferve in water thofe ftalks loaded with eggs, and fee the young water-fcorpions hatched under one's own roof, or at lead their larvas. Thefe infedts are voracious, and feed on other aquatic animals, which they pierce and tear with their fharp roftrnm, while they hold them with the forceps of their fore-feet.— They fly well, efpecially in the evening and night, and they convey themfelves from one pool to another, efpecially when that ihey are in begins to dry up. Mr Geoffroy aflerts, that the pedes cheliformes, or fore¬ feet of the nepa, are the antennas of the infeft, which, according to him, has but four feet. NEPEN PHES, in botany : A genus of the tetran- dria order, belonging to the gynandria clafs of plants; and in the natural method ranking among thofe of which the order is doubtful. The calyx is quadripar¬ tite ; there is no corolla ; the capfule is quadrilocular. NEPETA, Catmint, or Nep, in botany ; A ge¬ nus of the gymnofpermia order, belonging to the di- dynamia clafs of plants; and in the natural method ranking under the 42d order, Verticil lata:. The under lip of the corolla has a fmall middle fegment crenated ; the margin of the throat is reflexed ; the ftamina ap¬ proach one another There are 14 fpecies ; the moft re¬ markable is the cataria, common nep, or catmint. This is a native of many parts of Britain, growing about 6 1 NEP hedges and In wafte places. The ftalk is a yard high,and branched; the leaves are hoary ; the flowers flefh-co* ft . loured, growing verticillate in fpikes at the tops of the ^ ' branches : the middle fegment of the lower lip is fpot- ted with red. The plant has a bitter tafte, and ftrong fmell, not unlike pennyroyal. An infufion of this plant is reckoned a good cephalic and emmenagogue ; being found very efficacious in chlorotic cafes. Two ounces of the expreffed juice may be given for a dofe. It is called catmint, becaufe cats are very fond of it, efpe cially when it is withered ; for then they will roll them- felves on it, and tear it to pieces, chewing it in their mouths with great pleafure. Mr Ray mentions his having tranfplanted fome of the plants of this fort from the fields into his garden, which were foon de« ftroyed by the cats ; but the plants which came up from feeds in his garden efcaped : this verifies an old proverb, viz. “ If you fet it, the cats will eat it; if you fow it, the cats will not know it.” Mr Wither¬ ing is of opinion, that where there is a quantity of plants growing together, the cats will not meddle with them; but Mr Millar affures us, tha the has frequently tranfplanted one of thefe plants from another part of the garden, within two feet of which fome came up from feeds ; in which cafe the latter have remained unhurt, when the former have been torn to pieces and deftroyed : he acknowledges, however, that, where there is a large quantity of the herb growing toge¬ ther, they will not meddle with it. This plant is very hardy, and is eafily propagated by feeds. If iown upon a poor dry foil, the plants will not grow too rank, but will continue longer, and appear much handfomer, than in rich ground, where they grow too luxuriant, and have not fo ftrong a icent. NEPHELIUM, in botany : A genus of the pen- tandria order, belonging to the monoecia clafs of plants. The male calyx is quinquidentate ; there is no corolla; the female calyx is quadrifid ; there is no corolla.—> There are two germens and two ftyles 0:1 each ; the fruit are two dry plumbs, muricated,and monofpermous. NEPHEW, a term relative to uncle and aunt, fig- nifying a brother’s or filler’s fon ; who, according to the civil law, is in the third degree of confanguinity, but according to the canon in the fecond. NEPHRITIC, fomething that relates to the kid¬ neys. See Kidney. Nephritic Wood, (lignum nephriticum), a wood of a very denfe and compadt texture, and of a fine grain, brought to us from New Spain in fmall blocks, in its natural ftate, and covered with its bark. It is to be chofen of a pale colour, found and firm, and fuch as has not loft its acrid tafte ; for the fureft tell of it is the infufing it in water ; for a piece of it infufed only half an hour in cold water, gives it a changeable co¬ lour, which is blue or yellow as varioufly held to the light. If the vial it is in be held beeween the eye and the light, the tindlure appears yellow ; but if the eye be placed between the light and the vial, it appears blue. We often meet with this wood adulterated with others of the fame pale colour; but the dulkiffi black hue of the bark is a ftriking character of this. The tiee is the coatli of Hernandez. It grows to the height of our pear-tree, and its wood while freffi is much of the fame texture and colour ; the leaves are fmall and oblong, not exceeding half an inch in the N E P [ Nephritic length, or a third of an inch in breadth ; the flowers N II are fmall, of a pale-yellow colour, and oblong fhape, ' ^ {landing in fpikes : the cups they Hand in are divided into five fegments at the edge, and are covered with a reddifh down. This is the bell defeription of the tree that can be collected from what has been hitherto written of it; nobody having yet had an opportunity of taking its true charadters. This wood is faid to be a very good diuretic, and we are told it is ufed among the Indians in all difeafes of the kidneys and bladder, and in fuppreffion of urine, from whatever caufe. It is alfo recommended in fevers, and in obltrudtions of the vifeera. The way of taking it among the Indians is only an infufion in cold water. Thefe ufes are not however properly afeertained. See Guilandina. Nephritic Stone. Set 'Jade Stone. NEPHRITICS, in pharmacy, medicines proper for difeafes of the kidneys, efpecially the ftone.— Such particularly are the roots of althaea, dog’s grafs, afparagus, fago, pellitory of the wall, mallows, pimpinelia, red chick-peafe, peach-kernels, turpen¬ tine, &c. NEPHRITIS, or inflammation of the kidneys. See Medicine, n: 200. NEPOS (Cornelius), a celebrated Latin biogra¬ pher, who flourifhed in the time of Julius Caefar, and lived, according to St Jerome, to the fixth year of Auguflus. He was an Italian, if we may credit Ca¬ tullus, and born at Hoftilia, a fmall town in the ter¬ ritory of Verona, in Cifdpine Gaul. Aufonius, how¬ ever, will have it that he was born in the Gauls: and in that they may both be in the right, provided that under the name of Gaul is comprehended Gallia Cifal- pina, which is in Italy. Leander Alberti thinks Ne- pos’s country was Verona; and he is fure that he was either born in that city or neighbourhood. For the reft, Cicero and Atticus were friends of our au¬ thor ; who wrote the lives of the Greek hiftorians, as he himfelf attefls in that of Dion, {peaking of Phi- liftus. What he fays, alfo, in the lives of Cato and Han¬ nibal, proves that he had alf© written the lives of the Latin captains and hillorians. He wrote feme other excellent works which are loft. All that we have left-of his at prefent is, “ The Lives of the illuftrious Greek and Roman Captains}” which were a long time aferibed to iEmilius Probus, who publiihed them, as it is laid, under his own name, to infinuate himfelf thereby into the favour of the em¬ peror Theodofius ; but, in the courfe of time, the fraud has been difeovered, although feveral learned perfons have confounded the two authors. This piece has been tranfiated into French by the Sieur de Cla- veret, with a dedication to the duke of Longueville, in 1663 ; and again by M le Gras, then of the con¬ gregation of the oratory at Paris 1729, i2mo. We have an excellent tranflation of it in Engliflj, by feve¬ ral hands at Oxford, which has gone through feveral editions. NEP TUNE, in Pagan worflirp, the god of the fea, w^as the fon of Saturn and Vefta, or Ops, and the brother of Jupiter and Pluto. He aflifted Jupiter in his expeditions; on which that god, when he arrived at the.fupreme power, afligned him the fea and the iilands for his empire. Ke was, however, expelled X 7 1 NEP from heaven with Apollo for confpiring againft Ju* Neptune, piter, when they were both employed by Laomedon king of Phrygia in building the walls of Troy ; but that prince difmiffing Neptune without a reward, he fent a fea-monfter to lay wafte the country, on which he was obliged to expofe his daughter Hefione. He is faid to have been the firft inventor of horfemanfhip and chariot racing ; on which account Mithridates king of Pontus threw chariots drawn by four horfea into the fea in honour of this god; and the Romans inftituted horfe-races in the circus at his feftival, during which all other horfes left working, and the mules were adorned with wreaths of flowers. In a conteft with Minerva he produced a horfe by linking the earth with his trident; and on another occafion, in a trial of Ikill with Minerva and Vulcan, produced a bull, whence that animal was facrificed to him. His favourite wife was Amphytrite, whom he long courted in vain, till fending the d®lphin to inter* cede for him- he met with fuccefs ; on which he re¬ warded the dolphin by placing him amorfg the ftars: He had alfo two other wives, one of whom was called Salajia from the fait-water; the other Venilia fronr- the ebbing and flowing of the tides. He had like- wife many concubines, by whom he had a great num¬ ber of chiHren. He is reprefented with black hair, with a garment of an azure or fea-green, holding his trident in his hand, and feated in a large fhell dravvn by fea-horfes, attended by the fea-gods Palemon, Glaucus, and Phorcys, and the fea-goddefies Thetis, Melita, and Panopjea, and a long train of tritons and fea-nymphs. This deity was in Egypt known by the name of Ceno* lus ox Canopus, was worfhipped as the numen aquarum * or fpirit of the Nile. His emblem was the figure of certain vafes or pitchers, with which the Egyptians filtrated the water of their facred river, in order to purify it and render it fit for ufe. From the mouth of each of thefe vafes, which were charged with hie- roglyphics, arofe the head, and fometimes the head and hands, of a man or woman. Such are the em¬ blems which ftill remain of the Egyptian Neptune or Canobus ; and it v/as by this emblem that the tute¬ lar god of Egypt vanquished the god of Chaldea in the ridiculous manner mentioned by Ruffin us in his ecclefiaftrcal hiftory*. “ The Chaldaeans (fays he) who adored the fire,cap^l'‘ carried their god into various countries that he might • try his ftrength in contefts with other gods. He vanquifhed, as we may eafily conceive, the images made of gold, filver, brafs, and wood, &c. by reducing them to allies ; and thus the worfhip of fire was every where eftabliflied. The prieft of Canobus, unwilling, as became him, to admit the fuperiority of ftrange gods, contrived to make his god vanquifti the god ofChaldaca in a pitched battle. The vafes which were worlhipped as the emblems of Canobus being ufed for filtering the waters of the Nile, were of courfe per* forated on all fides with very fmall holes. This faithful prieft having flopped all the holes in one of thefe with wax, and painted the vafe of different co¬ lours for a reafon which the reader will admit to be a good one, filled it up with water, and fitted to its mouth the head of an idol. This emblem of Cano¬ bus was.then placed in a fmall .fire brought by the. Chair- / N E R T 8 1 N E R !FTereHs, Chaldnsans as the emblem of their god ; and thus the Keren. ^ g.0ds 0f Ejrypt and Chaldtea were forced iiito battle. The conteif, however, was of fhort duration. The heat melting the wax made way for the water to run out, which quickly extinguifhed the fire ; and thus Canobus vanquifhed the god of the Chaldasans.” Ridiculous as this ftory is, it is perfectly fuitable to the genius of paganifm and the mean artifices of the pagan priefihood ; but we fuipedf that the hillorian laboured under one mi (lake, and fubflitute l the Chai- daeans infiead of the Perfians. See Polytheism. NEREIDS, in the Pagan theology, fea nymphs, daughters of Nereus and Doris.—The Nereids were efteemed very handfome; infomuch that Caffiope, the •wife of Cepheus king of Ethiopia, having triumphed over all the beauties of the age, and daring to vie with the Nereids, they were fo enraged that they fent a prodigious fea-monfter into the country ; and, to appeafe them, fhe was commanded by the oracle to expofe her daughter Andromeda, bound to a rock, to be devoured by the monfier. in ancient monuments, the Nereids are reprefented riding upon fea-horfes ; fometimes with an entire human form, and at other times with the tail of a fifh. NEREIS, in zoology, a genus of animals belong¬ ing to the order of vermes mollufca. The body is ob¬ long, linear, and fitted for creeping ; it is furnifhed with lateral pencilled tentacula. rl here are 11 fpe- cies ; of which the mod remarkable are the five fol- SPTate lowing: t. The NoQiluca, or no&ilucous nefeis, which CC yXI.V inhabits almoft every fea, and is one of the caufes of 1‘ the luminoufnefs of the water. Thefe creatures firine like glow-worms, but with a brighter fplendour, fo as at night to make the element appear as if on fire all around. Their bodies are fo minute as to elude exa¬ mination by the naked eye. It is fometimes called nereis phofporans; and is thus defcribed by Grifilin : The head is roundifh and fiat, and the- mouth acuminated The two horns or feelers are firort and Tubulated. The eyes are prominent, and placed on each fide the head. The body is compofed of about 23 fegments or joints, which are much lefs nearer the tail than at* the head. Thefe fegments on both fides the animal all end in a firort conical apex, out of which proceeds a little bundle of hairs: from under thefe bundles the feet grow in the form of fmall flexile Tubulated figments rieftitute of any thing like claws. It is fcarcely two lines long, and is quite pellucid, and its colour is that of water green. They are found upon all kinds of marine plants; but they often leave them and are found upon the furface of the water : they are fre¬ quent at all feafons, but efpecially in fummer before ftormy weather, when they are more agitated and more luminous. Their numbers, and wonderful agility, added to their pellucid and finning quality, do not a little contribute to their illuminating the fea, for my¬ riads of tliofe animalculse may be contained in the portion of a fmall cup of fea-water. Innumerable quantities of them lodge in the cavities of the feales of fifhes, and to them probably do the fiflies owe their noftilucous quality. “ I have obferved with great attention (fays Barbut), a fifh juft caught out ©f the fea, whofe body was almoft covered with them; \ and have examined them in the dark : thev twift and I'D 241. curl themfelves with amazing agility, but foon retire - Nereis out of our contra&ed fight; probably their glittering II numbers dazzling the eye, and their extreme minute- Neri. nefs eluding our refearches. It is to he obferved, ^ 'r~~' that when the unftuous moifture which covers the feales of fifhes is exhaufted by the air, thefe animuR are not to he feen ; nor are the fiflies then no&ilucous, that matter being perhaps their nourifliment when living, as they themfijves afford food to many marine animals. They do not fhine in the day-time, becaufe the iolar rays are too powerful for their light; how¬ ever aggregate or immenfe their number.’* Their appearance is particularly brilliant when the wind is in the eaft and fouth-eaft points, and in winter-nights preceded by a warm day. If water containing thefe animalcules be kept warm, they retain their light two whole days after they are dead ; but in cold water lofe it in eight hours : motion and warmth, which increafe their vivacity and ftrength, increafe their light alfo. 2. Nereis lacujiris, or bog nereis. The body of the fize of a hog’s fliort briftle, tranfparent, as it were arti- ’ dilated, and on either fide at every articulation pro¬ vided with a fiiort fetaceous foot ; interiorly it feems to confift in a manner of oval fhaped articulations, and a back formed by two lines bent backwards. It inhabits marfhes abounding in clay, where it remains under ground, pufhing out its other extremity by reafon of its continual motion. When taken out it twifts itfelf up. Is frequent in Sweden. 3. Nereis cirrofa, or waving nereis. The body is pjg red, lumbriciform, with 65 notches, furnifhed on both fides with two rows of briftles. At each fide of the head ten filaments, at the fides of the mouth many, twice as long as the foomer. It dwells in Norway, on rocks at the bottom of the fea. It vomits a red liquor with which it tinges the water. 4. Nereis ceerulea, or blue nereis. It inhabits the Fig. 4, ocean ; where it deftroys the ferpuke and teredines. 5. Nereis giganttea, or giant nereis. This is ape- pg, culiar fpecies of thofe large worms that make their way into decayed piles driven down into the fen, which they bore through and feed upon, whence they are calledyia worms or nereis. From head to tail they are befet on either fide with fmall tufts terminating in three points ; which are like the fine hair pencils ufed by painters, and compofed of fhining briftles of various colours. The upper part of the body in this woim is all over covered with fmall hairs. The rings of which it is formed are clofely preffecl together, and yield to the touch. The three rows of fmall tufts we have been deferibing, ferve this nereis in- ftead of feet, which it ufes to go forwards as fifhes do their fins. NEREUS, (fab. hift.), a marine deity, was the fon of Oceanus and Thetis. He fettled in the iEgean Sea, was coniidered as a prophet, and had the power of afluming what form he pleafed. He married his fifter Doris, by whom he had 50 daughters called the Nereids, who eonftantly attended on Neptune, and when he went abroad furrounded his chariot. NERI (S. Philippe de), founder of the congrega¬ tion of the Oratory in Italy, was born of a noble fa, mily at Florence, on the 25th of July 1515. Edu¬ cated in the principles of piety and learning, he foon . became Veri n ■Kero. N E R [ became dlftinguifhed for his knowledge and virtue. At the age of 19 he went to Rome, where he im- , proved his mind, afiiiled the fick,and gave many proofs of felf-denial and humility. Philippe, being raifcd to the priefthood at the age of 36, infiituted, in 1550, a celebrated fellowlhip in the church of St Saviour del Campo, for the relief of poor foreigners, of pilgrims, and of convalefcents, who had no place whither they could retire. This fociety was the ciadle, if we may fay fo, of the congregation of the Oratory. The holy founder having gained "over to God Salviati brother to the cardinal of the fame name, Tarugio afterwards cardinal, the celebrated Baronius, and feveral others, they began to form themfelves into a fociety in 1564. The fpiritual exercifes had been transferred in 1558 to the church of Saint Jerom de la Charite, which Philippe did not leave till 1574, when he went to flay at Saint John of the Florentines. Pope Gre¬ gory XIII. gave his approbation of the congregation in the following year. The father of this new warfare fcnt out fome of his children, by whom his order was fpread throughout Italy. Nor is there any reafon to be furprifed at its rapid fuccefs. No vow is taken in this congregation ; charity is the only bond of connexion. The general continues only three years in office, and his orders are not thofe of a ty¬ rant or a defpot. The founder died at Rome on the tiight between the 25th and 26th of May 1595, aged 80. He had refigned the generahhip three years be¬ fore in favour of Baronius, who, by his advice, was engaged in the ecclefiallical annals. The conftitu- tions which he left for his congregation were not printed till 1612. The principal employment which he allots to the prielfs of his order, is to give, every day, in their oratory or church, inflruftions fuited to the underlfandings of their hearers : an office truly apoftolical, and which the followers of Neri difeharge with fuccefs. They humble themfelves, that they may exalt to God the foul of the fimple. Philippe was canonifed in 1622 by Gregory XV. There was a learned man of the name of Neri (An¬ thony), from whom we have a curious book printed at Florence 1612, in 4to, with this title Del?Arte verraria libri VII. ; and a Dominican named Thomas Neri, who employed his pen in defence of his fellow monk, the famous Savonarole. NERIUM, in botany : A genus of the monogynia order, belonging to the pentandria clafs of plants ; and in the natural method ranking under the 30th order, ^ Contort#. There are two eredb follicles ; the feeds plu¬ my ; the tube of the corolla terminated by a lacerated crown. There are five fpecies, all of them na¬ tives of the warmer climates : the moll remarkable of which are, r. The oleander, South-Sea rofe : this is a beautiful flirub, cultivated in gardens on account of its flowers, which are of a tine purple, and in clufters, but of an indifferent fmell: the whole plant is poifonous, and efpecially the bark of the roots. 2. The antidyfin- tericum, a native of Ceylon : the bark of which is an article of materia medica, under the name of Conejfi. 3. The tinfforium, a new fpecies with beautiful blue flowers lately difeovered b; Dr Roxburgh at Madras. A decoftion of the leaves, with an addition of lime- . water, makes an indigo of fine quality. NERO (Claudius Dcmitius Cxfar), a celebrated Vot. XIII. Parti. 9 I N E R Roman emperor, fon of Caius Domitius Ahenoharhus and Agrippina the daughter of Germanicus. He was adopted by the emperor Claudius, A. D. 50, and four years after he fucceeded to him on the throne. In the beginning of his reign he fhowed feveral marks of the greateft kindnefs and condefcenfion, affability, com- plaifance, and popularity. The objedl of his admini- ftration feemedto be the good of his people ; and when he was defired to fign his name to a lift of maleftc* tors that were to be executed, he exclaimed. Would to heaven I could not write ! He hated flattery ; and when the fenate had liberally commended the wifdom of his government,. he defired them to keep their praifes till he deferved them. Thefe promifing virtues foon, however, proved to be artificial: Nero foon dif- played the real propenfities of his nature. He deliver¬ ed himfelf from the fway of his mother, and at laft ordered her to he murdered. This unnatural aft of bar¬ barity might aftonifh fome, hut Nero had his devoted adherents; and when he declared that he had taken away his mother’s life to fave himfelf from ruin, the fenate applauded his meafures, and the people fignified their approbation. Many of his courtiers fhared her unhappy fate ; and Nero facrificed to his fury or ca¬ price all fueh as obftrufted his pleafure or diverted his inclination. In the night he generally went from his palace to vifit the meaneil taverns, and all the feenes of debauchery which Rome contained. In this noc¬ turnal riot he was fond of infulting the people in the ftreets; and his attempts to offer violence to the wife of a Roman fenator nearly coft him his life. Fie alfo turned aftor, and openly appeared on the Roman ftage in the meaneft charafters. In his attempts to excel in mufic, and to conquer the difadvantages of a hoarle difagreeable voice, he moderated his meals, and often puffed the day without eating. The Olympian games attrafted his notice: he went into Greece, and pre¬ fenced himfelf a candidate for the public honour. He was defeated in wreftling; but the flattery of the fpeftators adjudged him the viftory, and he returned to Rome with all the pomp and fplendor of an eaftern conqueror, drawn in the chariot of Auguftus, and at¬ tended by a band of muficians, aftors, and ftage-dan- cers from every part of the empire. Thefe private and public amufements of the emperor were indeed innocent; his charafter only was injured, and not the lives of the people. His conduft, however, foon be¬ came more abominable : he difguifed himfdf in the habit of a woman, and was publicly married to one of his eunuchs. This violence to nature and decency was foon exchanged for another: Nero refumed his fex, and celebrated his nuptials with one of his mean- eft catamites : and it was on this occafion that one of the Romans obferved that the world would have been happy if Nero’sjfather had had fuch a wife. But his cruelty was now difplayed in a ftill higher degree, for he facrificed to his wantonnefs his wife Oftavia Poppoea, and the celebrated writers, Seneca, Lucan, Petronius, &c. Nor did the Chriftians efcape his barbarity. He had heard of the burning of Troy; and as he wifhed to renew that difmal feene, he caufed Rome to be fet on fire in different places. The con¬ flagration became foon univerfal, and during nine fuc- ctffive days the fire continued. All was defolaticn ; nothing was heard but the lamentations of mothers ^ whofc Ncro< M E R [ io ] N E S Nero, whofe children had perifhed in the flames, the groans ■“■"■v '’mmJ of the dying, and tire continual fall of palaces and buildings. Nero was the only one who enjoyed the general confternation. He placed himfelf on the top of a high tower, and he fung on his lyre the dcilruc- tion of Troy, a dreadful fccne which his barbarity had realifed before his eyes. He attempted to avert the public odium from his head by a pretended commifera- tion of the miferies of his fubjefts. He began to re¬ pair the ilreets and the public buildings at his own ex¬ pence. Hebuilt himfelf a celebrated palace, whichhecall- ed his golden houfe. It was liberally adorned with gold, withpreciousftones,and with every thing rareandexqui- iite. It contained fpacious fields, artificial lakes, woods, gardens, orchards, and whatever exhibited a beautiful fcene. The entrance of this edifice could admit a large coloflus of the emperor 120 feet high ; the galleries were each a mile long, and the whole was covered with gold. The roofs of the dining halls reprefented the firmament, in motion as well as in figure ; and conti¬ nually turned round night and day, fhowering down all forts ©f perfumes and fweet waters. When this grand edifice, which, according to Pliny, extended all round the city, was finifhed, Nero faid, that now he could lodge like a man. His profufion was not lefs remarkable in all his other actions. When he went a fifiling, his nets were of gold and filk. He never ap¬ peared twice in the fame garment; and when he took a voyage, there were thoufands of fervants to take care of his wardrobe. This continuation of debauchery and extravagance at laft roufed the people. Many eonfpiracies were formed againft him ; but they were generally difcovered, and fuch as were acceffory fuf- fered the fevereft punifhments. The moll dangerous confplracy againft; Nero’s life wras that of Pifo, from which he was faved by the confeffion of a Have. The confpiracy of Galba proved more fuccefsful, who, when he was informed that his plot was known to Nero, de¬ clared himfelf emperor. The unpopularity of Nero fa¬ voured his caufe ; he was acknowledged by all the Roman empire, and the fenate condemned the tyrant to be dragged naked through the ftreets of Rome, and whipped to death, and afterwards to be thrown down from the Tarpeian rock like the meaneft malefa&or. This, however, was not executed; for Nero pre¬ vented it by a voluntary death. He killed himfelf, A. D. 68, in-the 3id year of his ag?, after a reign ©f 13 years and eight months. Rome was filled ■with acclamations at it ; and the citizens, more ftrongly to indicate their joy, wore caps, fuch as were generally ufed by flaves who had received their freedom. Their vengeance was not only exercifed againft the ftatues of the deceafed monfter, but many of his friends were the objtdf of the public refentment; and many were crufhtd to pieces in fuch a violent manner, that one of the fenatois, amid the univerfal joy, faid that he was afraid they ftiould foon have caufe to wifii for Nero. The tyrant, as he expired, requefted that his head might not be cut off from his body, and expofed to the infolence of the popu¬ lace, but that the whole might be burned on the funeral pile. His requeft was granted by one of Galba’s freed'men, and his obfequies were performed with the ufual ceremonies. Though his death feemed to be the fource of general gladnefs, yet many of his favouritee lamented his fall, and were grieved to fee that their ^erva* pleafures and amufements were flopped by the death , tt'ves‘ of this patron of debauchery and extravagance. Even the king of Parthia fent ambafiadors to Rome, to con¬ dole with the Romans, and to beg that they would honour and revere the memory of Nero. His ftatues were alfo crowned with garlands of flowers ; and. many imagined that he was not dead, but that he would foon make his appearance and take vengeance on his enemies. It will be fuffieient to obferve, ia fini/hing the charafter of this tyrannical monfter, that the name of Nero is even now ufed emphatically to ex- prefs a barbarous and unfeeling oppreffor. Pliny calls him the common enemy and fury of mankind ; and fo indeed he has been called by all writers, who exhibit Nero as a pattern of the moft execrable barbarity and unpardonable wantonnefs. The fame Pliny furnifhes us with this fingular anecdote of him : “ Nero had or¬ dered himfelf to be painted under the figure of a co- loflus, upon cloth or canvas, 1 20 feet in height.” He adds, “ that this prepofttrous picture, when it was fi¬ nifhed, met with its fate from lightning, which con- fumed it, and involved likewife the moft beautiful part of the gardens where it was placed in the conflagra¬ tion.” NERVA (Cocceius), a Roman emperor after Do- mitian, who was the laft of the 12 Csefars. He was a native of Narnia in Umbria ; his family .how'ever was originally of Crete. Dio Cafiius fays he was born on the 17th of March, in the 18th year of Tiberius’s reign, and of the Chriftian sera the 3 2d. Nero in the 12th year of his reign made him praetor, and eredled a ftatue for- him in the palace on account of his poems (for he was one of the beft poets of his age), fome of which were inferibed to him. He was conful in 71 with Vefpafian,. and in 90 with Domitian. Ancient authors uniformly celebrate him as a prince of a moft mild and humane temper, of great modera¬ tion and generofity, who looked on his office as em+ peror, not as if it was for his own advantage, but for that of his people ; and whilft he reigned, which was however but for a ftiort time, he made the happinefs of his fubjefts his only end and purfuit. He narrowly efcaped death under Domitian ; was naturally of a weak and timorous difpofition ^ and, as fome fay, addicted to exceffive drinking. The Romans unani- moufly chofe him emperor; and^they had no caufe to repent of their choice, for he was conftantly attentive to what could make them happy ; he was generous, merciful, and difinterefted An in 'lance of his great lenity appears in his pardoning Calpurnius Craffus who confpired againft him. In fhort, he omitted nothing that might contribute to the reftoiing of the empire to its former luftre ; recalling thofe who had been ba- nifhed for religion, and redreffing ail grievances that came to his knowledge. He however found his ftrength failing, and that it would be impoffible for him to fi- ni(h his defigns, in confequence of which he adopted Trajan. After his death, which happened in the year 98, he was ranked among the gods. He was the firft Roman emperor of foreign extraftion. NERVES, in anatomy, certain white gliftening cords, proceeding from the brain and fpinal marrow, and dividing into very fmall branches, which are fent off throughout all parts of the body j and which are found Nervou* II Ndior. N E S [n found to be tne organs of fenfation and motion. See Anatomy, n° 136. j NERVOUS fluid. See Anatomy, n° 136. NESSUS (fab. hilt.), a celebrated centaur, fon of Ixion and the Cloud, He offered violence to Deja- nira whom Hercules had entrufted to his care, with orders to carry her acrofs the river Evenus. Hercules faw the diftrefs of his wife from the oppofite fliore of the river, and immediately he let fly one of his poi- foned arrows, which (truck the centaur to the heart. Neflus, as he expired, gave the tunic he then wore to Dejanira, afluring her that from the poifoned blood which had flowed from his wounds, it had received the power of calling a hufband away from unlawful loves. .Dejanira received it with pleafure, and this mournful prefent caufed the death of Hercules. A river which feparates Thrace from Macedonia. It is alfo Called Nefus, Nejlos, and Neflus. NEST. See Nidus. Eatable Birds Nests. See Birds Nejls. NESTOR (fab. hift.), a fon of Neleus and Chloris. nephew to Pelias and grandfon to Neptune, hie had eleven brothers, who were all killed with his father by Hercules. His tender age detained him at home, and was the caufe of his prefervation. The conqueror fpared his life and placed him upon the throne of Pylos. He married Eurydice the daughter of Clymenus ; or, according to others, Anaxibia the daughter of Atreus. He foon diftinguifned himfelf in the field of battle ; and was prefent at the nuptials of Perithous, when a bloody engagement took place between the Lapithas and centaurs. As king of Pylos and Meflenia he led his fubjefts to the Trojan war, where he diftinguifhed himfelf among the reft of the Grecian chiefs, by elo¬ quence, addrefs, wifdom, juftice, and uncommon pru¬ dence. Homer difplays his chara&er as the moft per- feft of all his heroes ; and Agamemnon exclaims, that if he had 20 generals like Neftor, he fliould foon fee the walls of Troy reduced to afhes. After th^ Trojan war Neftor retired to Greece, where he enjoyed in the bofom of his family the peace and tranquillity which were due to his wifdom and to his age. The manner and the time of his death are un3'‘“g »u her warbke and diplomatic tranfacUons with N E U T 1 Never*, counts. There is a ftone-bridge on the Lorre, with Neuchattel. twenty archcs, a draw-bridge on each fide, and towers — to defend them. The cathedral is dedicated to St Cvr There are eleven parifhes in the town, and a great many religious houfes The Jefuits college near the gate des Ardehers is a handfome ftruAure. Th palace of the dukes ft as tenderly and as fecurely proteded by the laws of this country as by thofe of our own invaluable con- ftitution. Thus the liberties of the people are as well and perhaps better fecured, than even in the demoerati- cal cantons ; for although the moft defpotic prince in Germany is fovereign, his power is exceedingly li¬ mited. Among the ftriking circumftances which cha- raderife this government, muft be mentioned the very liberal encouragement given to ftrangers who fettle N E U They enjoy every privilege of trade Neufchat. and commerce ; and in no ftate are fewer eflential di- ftindions made between ftrangers and natives.” NEUFCH ATTEAU, a town of France, in Lor- rain, and capital of the chateilenie of Chatenoi. It is an handfome, populous, trading town ; having an abbey of the nuns of St Clair, a commandery of Malta, and feveral convents of monks and nuns. It is feated in a bottom, in a foil fertile in corn, wine, and all the neceftaries of life, on the river Mouzon. E. Long.. 5. 45 N. Lat 48. 20. NEVIS, one of the Caribbee iflands, lying about feven leagues north of Montferrat, and feparated from St Chriftopher’s by a narrow channel It makes a beautiful appearance from the fea, being a large coni¬ cal mountain covered with fine trees, of an eafyafeent on every fide, and entirely cultivated. The circumfe¬ rence is about 21 miles, with a confiderable trad of level ground dl around. The climate in the lower __ part is reckoned to be warmer than BarbaJoes, but it is more temperate towards the fummit. The foil is very fine in the lower part, but grows coarfer as we afeen l. The produdions are nearly the fame with thofe of St Chriftopher. There are three pretty good roads or bays, with fmall towns in their vicinity ; Charles-town, Moreton-Bay, and Newcastle This pleafant iftand was fettled under the aufpices of Sir Thomas Warner from St Chriftopher’s. His fuccef- for, Governor Lake, was conlidered as the Solon of this little country, in which he difpofed of every thing with fuch prudence, wifdom, and juftice, as procured him an high reputation wich the French as well as Englilh. In the Dutch war they met with fome di- fturbance from the French ; but by being covered by an Englifh fquadron, the enemy were obliged to defiii from their intended invalion, after a fmart engage¬ ment in fight of the ifland. Sir William Stapleton fometimes refided here, and Sir Nathaniel Johnfon conftantly, at which time the inhabitants of Nevis were computed at 30,000. In the war immediately after the revolution, they exerted themfelves gallantly, and had two regiments of 300 men each. In that of Queen Anne they behaved equally well, though they were lefs fortunate ; for the French landing with a fuperior force, and having inveigled moll of their flaves, they were forced to capitulate. A bout 4000 of thefe fiaves the French carried away and fold to the Spaniards, to work in their mines. The parlia¬ ment, after making due inquiry into the Ioffes they had fuftained. voted them about a third part of the fum in which they had fuffered. 1 hefe Ioffes by war, an epidemic difeafe, and repeated humcanes, exceed¬ ingly diminifhed the number of the people. They are now thought not to exceed 2000 or 3000 whites, and 6000 blacks. There is here a lieutenant-governor, with a council, and an affembly, which is compofed of three members from each of the five parilhes into which the ifland is divided. The commodities are cotton and fugar; and about 20 fail of (hips are an¬ nually employed in this trade. NEUR ADA, in botany: A genus of the decagy- nia order, belonging to the decandria clafs of plants j and in the natural method ranking under the 13th or¬ der, Succulent#. The calyx is quinquepartite ; there are five petals; the capfuie inferior, decemlocular, decafper- 6 mo us, N E U [2 ' JJeurit'rs mous, and acxileated There is only one fpeeies, f! the Procumbent. The whole pl .nt ia white and woolly : ^Ntutc-r. .t numerous ftalks in every di.eftion, which lit flat on the ground : the leaves (land on fhort foot- flalks ; they are of an oval fhape, and plaited likethofe of the ladies mantle. It is a native of the warm climates, and found on dry parched'grounds. NEUR1T1CS, in pharmacy, medicines ufeful in diforders of the nerves NEUROGRAPHY, fl unifies a defeription of the nerves. See Anatomy, n0 136. ' NEUROPTERA. Set Zoology NEQ TER, a pex-fon indifferent, v\Tho has efpoufed neither p '.rty, and is neither friend nor foe. A judge ought to be neuter in the caufes he judges ; in queftions, where reafon appears neuter, a man fliould ever incline to the fide of the unhappy. NeuTf r, in grammar, denotes a fort of gender of nouns, which are neither mafeuline nor feminine. See Gender. The Latins have three kinds of genders, mafeuline, feminine, and neuter In Englifh, and other modern tongues, there is no fuch thing as neuter nouns. See Noun. Verbs-Newtv.r, by feme grammarians called intran¬ et he verbs, are thofe which govern nothing, and that are neither adlive nor pofitive See Verb. When the adlion exprefled by the verb has no ob- je£t to fall upon, but the verb alone fupplies the whole idea of the a&ion ; the verb is faid to be neu¬ ter : as, I fleep, thou yawrieft, he fneezes, we walk, ye run, they ftand ftill. Some divide verbs neuter into, 1. Such as do not fignify any adion, but a quality ; as a/bet, “ it is white;” or a fituatien, as Jedet, “ he fitsor have fome relation to place ; as adejl, “ he is prefentor to fome other ftate or attribute, as regnat, ‘ he rules,” &c. And. 2. Thofe that do fignify addons, though thofe fuch as do not pafs into any fubjed different from the ador, as to dine, to fup, to play, &c. But this latter kind fometimes ceafe to be neuter, and commence adive ; efpecially in Greek and Latin, when a fubjed is given them : as, vhere vitam. ambu- lare viam, pugnare pugnam. Thus the old French poets fay, Soupirer fan tourment; the Englifh, to Jigb his vjoes Itc. But thiV is obferved only to obtain where fome- thing particular is to be exprefled, not contained, in the verb : as, vhere vitam beatam, to live a hap* py life ; pugnare bonam pugnam, to fight a good fight, &c. According to the abbot de Dangeau, verbs neuter may be divided into aShe and pajjtve; the firft, thofe that form their tenfes in Englifh, by the auxiliary verb to have; in French, by avoir. The fecond, thofe that form them in Englifh with the verb to be; in French pre.—Thus, to fleep, to yawn, dorrnir and eternuer, are neuters abtive.—To come, and to arrive, are neuters pafjive. NF.vTRAL-Sa/ts, among chemifls, thofe compounded of an acid with any other fubftance capable of uniting •with it and deftroying its acidity. Thofe in which the acid is faturated with an earth or a metal are call¬ ed imperfed, but thofe in which a pure alkali is em¬ ployed are called perfect, neutrals, 1 1 NEW NEUTRALITY, the ftate of a perfon or thing Neutrality that is neuter, or that takes part with neither fide. !l NEW-ab-sey, fituated near Kilcullen-bridge, in the county of Kildare, and province of Leinfter,in Ireland. roU'U:h' , It was founded by Rowland Euftace, of a great and an- cient family in this county ; the tower is ftiil ftanding, and fome part of the abbey ; the ruins of the reft have contributed to build feveral dwellings near it. In the infide Rowland Euitaee and his lady lie buried ; their figures, clothed in armour, are to be feen there Near this is a handfome feat of the Carter family, on the oppofice fide of the river Liffey. NEWARK, in the county of Nottingham, isa great thoroughfare in the ffork-road, 1 24 milesfrom London, it has bridges over the Trent, which forms an ifland here, by dividing itfelf into two ftreams two miles above the to n, which meet again two miles below it A magnificent caftie was bunt here in the reign of King Stephen, which held out ftoutiy in the barons wars for King John, who died here, O&ober 19th 1216 ; and it ado flood out for king Charles I. to the laid ; but after he had put himfelf into the hands of the Scots army then before it, the governor by his order furrendered it, after which it was demolilhed.— it was fituated near the river; the walls of the towers are very thick, and of a very great height; and were there no hiitorical teftimony, thefe remains are fuffi- cient evidence that it was formerly of great impor¬ tance In the court before thefe ruins is a very fine bowling-green, and near it a manufadlory of facking. The town being fubjedb to inundations from the river I rent, and often from that circumllance made impaf- fable, a turnpike-road, at the inftigation of a publi¬ can, was made about 20 years ago, fo high as to be puffed with fafety in the greateft floods by arches of brick being ma le in feveral places to carry off the wa¬ ter, conftru&ed by Mr Smeaton, at the ex pence of E. 12,000. Near the town there is a bridge con- ilruded for the fame purpofe, made moftly upon dry land, confiding of nine arches. It has a neat though finall new ffreet, and a market-place that is hapdfome, thougn not very ipacious. Its church, which is rec¬ koned one of tne fineit in the kingdom, was built by Henry VI. and has a lofty fpire. It was incorporated by king Charles II. with a mayor and 12 aldermen. - The fame king, in gratitude to the town for its loyalty to ids father, gave it the privilege of fending members to parliament it has a good trade in corn, cattle, wool, &c. and has a chari y-fehool for 36 boys. Its market is on Wednefday , fairs on the Friday before Paffion- Bunday, May 14th, Whit-Tuefday, Auguft 12th, Nov. iff, and Monday before December 1 ith. Here was an abbey of Augultine friars. H free-febool was found¬ ed here, endowed with the lordfhip of Everton in this county ; and the vicar of Newark, and the brethrui of the ; rinity-guild for the time being, who were then the chief governors of tins town, were made perpetual truilees for this foundation. Many Roman urns and other antiquities have been found about this town, from whence it has been fuppofed that they had fome town in the neighbourhood. NEWBOROUGH, or Newburgh, in the Ifle of Angle fey, North Wales, diftant from London 254 miles, though but a fmall town, fituated over againil Caernarvon in North Wales, about 17 miles fouth- weft 1 •» NEW [ Ktiv.Virg weft from Beaumaris ; is governed by a mayor 11 \ 'ii*!,r o *-i>/- two old men were fubpoenaed hither as witneffes from a neighbouring village, viz. one ’ 37 years of age, and his fon 05, both hearty, and having their fight and . hearing ; and that in 1744, one Adam 1 urnbtill died in this town aged 112, who had had four wives, the laft of whom he had married when he was near 100 years old. The annual affionnt of the revenue of cuftoms at this port, which Mr Brand in his hiftory of New- caftle Hates at 41,000!. is now very confiderably up¬ wards of 70,000 1. The coals carried out of it annually (on an ave¬ rage from 1785 to 1791) were nearly 448.000 New- callle chaldrons ; the weight of which is 1,187,200 tons. The manufacture of earthen-ware is greatly in- creafed, and carried on to great perfection in its neigh¬ bourhood, in feven potteries ; and their produce ex¬ ported hence to foreign parts, as well as to the diffe¬ rent ports of this kingdom ; fome of which potteries conftantly employ upwards of 100 perfons, men, wo¬ men and children. New works of confiderable extent for the manu¬ facture of iron have been eftablifhed; as alfo a very capital manufactory for white lead, milled lead, &c. The trade with the Well India tflands is inerea- fing, and may in time become very confiderable ; as the port has great advantages, in being able to fupply on the cheapeft terms many articles wanted in thofe illands ; fuch as coals, grindftones, lime, bricks, tiles, iron-wares, &c ; and is moll advantageoufiy fituated for the re exportation of the Weft India produce to the ports on the Baltic, to Germany, the United Pro¬ vinces, Flanders, and part of France ; and moreover, the rifle of navigation, and the rate of infurance, not being greater than between thofe iflands and Liver¬ pool, and fome other ports on the weftern coaft of this kingdom. The town of Newcaftle is daily increafing in its population and opulence ; and it would be well if it could not be added, in luxury, the almoft neceffary confequence of riches : but it fhould not be omitted, that it is noted for hofpitality and good living. Great improvements have been made in the town, by opening new ftreets, and paving the principal ones, in the fame manner as in London. It cannot be faid that it is well lighted, the few lamps fcattered here and there ferving but to make darknefs vifible ; nor have the orders repeatedly given by the magiftrates for cleaning the ftreets been attended with the fullde- fired effed. 1 o the lift of public edtfices of modern ereClion, and mentioned abovej viz. the grand aflembly rooms, and the elegant theatre, which were built by fubferiu- N° 241, ^ tion, and the fuperb parifh-church of All Saints, Niwcaftle built at a very great expence by the pariffiioners, may ^ be added a commodious riding-houfe, built alfo by fubfeription. Newcastle, a borough town of Ireland, in the county of Dublin, and province of Leinfter, which returns two members to parliament, and holds two fairs, gth of May and 8th of OClober. Newcastle is alfo the name of a handfome town in the county of Limerick and province of Munfter, on the high road to Kerry, 114 miles from Dublin. Here was a religious houfe poffeffed by the knights templars. It is faid, they ufed fome barbarous cuftoms which greatly difgufted the Irifti, who, watching a fa¬ vourable opportunity, attacked a number of the knights riding out together and put them to death ; the place is ftill remembered where their remains were interred This order was fuppreffed in the famous council of Vienna, 2 2d of March 1312. Newcaftle confifts of a large fquare where markets and fairs are held ; on the northern fide Hands a market-houfe, with an affembly^room; on the fouth fide is the church, which is. the neateft in the county, and it was finifhed in 1777 at the foie expence of Lord Courtenay. It Hands clofe to the walls and fortifications of the knights templars, of which one of the caftles is fitted up for Lord Courtenay’s agent. Newcastle, a fmall town in America, 35 miles below Philadelphia, on the weft bank of Delaware ri¬ ver. It was firft fettled by the Swedes about the year 1627, and called Stockholm. It was afterwards taken by the Dutch, and called New Amjlerdam. When it fell into the hands of the Englifh, it was called by its prefent name. It contains about 60 houfes, which have the afpedl of decay, and was formerly the feat of government This is the firft town that was fettled on Delaware river. Newcastle (Duke of). See Cavendish. New England. See England ( New. ) Npar-Forejl of Hampfhire in England, is a tradl of at leall 40 miles in compafs, which had aiany populous towns and villages, and 36 mother-churches, till it was deftroyed and turned into a foreft by William the Conqueror. There are nine walks in it; and to every one a keeper, under a lord-warden, befides two ran¬ gers, and a bow-bearer. As this large traft lay many ages open and expofed to invafions from foreigners. King Henry VIII. built fome caftles in it; and it has now feveral pretty towns and villages. It is fituated in that part of Hampfhire which is bounded on the eaft by Southampton river, and on the fouth by the Britifh Channel. It poflefles advantages of fituation, with refpedl to the convenience of water-carriage and nearnefs to the dock-yards, fuperior to every other foreft, having in its neighbourhood feveral ports and places of fhelter for (hipping timber, among which Lymington is at the diftance of only two miles, Bew- ley about half a mile, and Redbridge three or four miles from the Foreft ; and the navigation to Portf- mouth, the molt confiderable dock yard in this king¬ dom, is only about 30 miles from the neareft of thofe places. This is the only foreil belonging to the crown of which the origin is known. Domefday- book contains the moft diftinbl account of its affore- ftation by William the Conqueror; the contents of every NEW [ '25 New Fo* every field, farm, or eltate afforefted, in Kides, caru- rt^' cates, or virgates, by which the extent of land was then computed, together with the names of the hun¬ dreds and villages, and of the former proprietors (which are for the moft part Saxon), the rent or yearly- value of each polfefiion, and the tax which had been paid for it to the crown during the reign of Edward the Confeffor, before the inhabitants were expelled, and that part of the country laid wafte, are all to be found in that moil curious and venerable record. Wifhing to difeover the original extent of the foreft, we extrafted, for onr own information, all that relates to it hi that ancieiTt f'urvey. The extrad is far too voluminous for infertion. The names of many of the places having been changed fince that time, it is difficult to afeertain with precifion what were then the limits of the foreil. The oldeft perambulation we have met with is among the Pleas of the Foreft, in the eighth year of King Edward I. preferved in the Chapter-houfe at Weilrainfter. The boundaries there deferibed include all the country from Southamp¬ ton river on the call to the Avon on the weft, follow¬ ing the fea-coaft as far as the fouthern boundary be¬ tween thofe rivers, and extending northwards as far as North Chadeford, or North Charford, on the weft, and to Wade and Orebrugg, or Owerbridge, on the eaft; and the greateft part, if not the whole, of that ex- tenfive diftii£t, is mentioned in Domefday-book to be the foreft belonging to the crown. Another perambula¬ tion was however made in the 29th of the fame king, which leaves out a great part of the country contain¬ ed within the former. This perambulation, which Is preferved in the tower of London, confines the foreft to limits which, as far as we can trace them, appear to have been followed in the 2ad year of Charles II. when the foieft was again perambulated. By the Charta cle Forejla, all lands not belonging to the crown which had been afforefted by Elenry <1, Richard I. or King John, were to be difafforefted; but as no provifion was made for the reduction of the more an- ^ cient alforeftations, it is eafy to account for the great diminution of this foreft in the reign of Edward I. who was not a prince likely to fubmit to any encroach¬ ment on his rights. The perambulation of the 2 2d of Charles II. is the lait which we find on record : it contains the prefent legal bounds of the forelt, and was given to the furveyors as their guide, in taking the plan which they have made lately by direction. From that plan, with the approbation of the lords commif- fioners of his majefty’stieafury$an engraving was made. According to the lait mentioned perambulation and the plan, the foreft extends from Godftiill on the north- . weft to the fea on the fouth-eaft, about 20 miles ; and from Hardley on the call to Ringwood on the weft, about 15 miles; and contains within thofe limits about 92,365 acres ftatute meafure. The whole of that quantity, however, is not foreft-land, or now the property of the crown : there are feveral manors and other coniiderable freehold eftates wu’thin the perambu¬ lation, belonging to individuals, to the amount of about 24>797 ac,cs 5 about 625 acres are copyhold or cullo- mary lands belonging to his majefty’s manor of Lynd- jiuift; about 1003. acres are leafe-hold under the crown, granted for certain terms of years, and formintr Vol. XIII. Part I. • 6 ] N E \V part of the demifed land-revenue, under the manage- New Hoi* ment of the furvtyor-general of crown lands; about End 901 acres are purpreftures or encroachments on the H foreft ; about 1 193 acres more are isclofed lands held Ne1^uni*~ by the mafter-keepers and groom-keepers, with their ^ refpedlive lodges; and the remainder, being about 63,845 acres, are woods and wafte lands of the foreft. To perpetuate the fpot where William Rufus was killed by the glance of an arrow fhot at a flag, a tri¬ angular ftone was eredled in 1745. George III. vi- fited this fpot in 1789. In Auguft 1782, a curious ancient golden crofs was found here by a labouring man digging turf. It weighed above an ounce of gold, and had on one fide an engraving of our Saviour, and on the other, the ladder, fpear, nails, and other emblems of his fufferings. New.Holland. See Holland (New.) Ntw-York. See Yoke (New). N Etr-Zealand. Sea Zealand (New.) New Years-Gifts. Prefents made on the firft day of the new year. Nonius Marcellus refers the origin of this cuitom among the Romans to Tatius king of the Sabines, who reigned at Rome conjointly with Romulus, and who having coniidered as a good omen a prefent of fome branches cut in a wood confecrated to Strenia, the goddefs of ftrength, which he received on the fir 11 day of the new year, authorifed this cu- llom afterwards, and gave to thefe perfons the name oijlrena. However this may be, the Romans on that day celebrated a feftival in honour of Janus, and paid their refpecls at the fame time to Juno ; but they did not pafs it in idlenefs, left they fhould become indo¬ lent during the reft of the year. They fent prefenta to one another of figs, dates, honey, &c. to fhow their friends that they wiftied for a happy and agreeable life. Clients, that is to fay, thofe who were under the prote&ion of the great, carried prefents of this kind to their patrons, adding to them a fmall piece of filver. Under Auguftus, the ferfate, the knights, and the people, prefented fuch gifts to him, and in his abfence depofited them in the capitol. Of the fucceeding princes iome adopted this cuftom and others abolilhed it; but it always continued among the people. The early Chriftians condemned it, be- caule it appeared to be a relique ©f Paganifm and a fpecies of fuperftition ; but when it began to have no other obje& than that of being a mark of veneration and efteem, the church ceafed to difapprove of it. NEWEL, in architedture, is the upright poft which a pair of winding flairs turn about; this is properly a cylinder of ftone, which bears on the ground, and is formed by the end of the fteps of the winding flairs. NEWFIDLER- sea, a lake in Hungary, 17 miles in length and 6 in breadth. NEWFOUNDLAND, a large ifland of North America, belonging to Great Britain, lying between 46 50. and 51. 30. N. Eat. and between 53. 30. and 58. 20. W. Long, from London. The form is that of an irregular triangle, the bafe or fouth fide be¬ ing 80 leagues in extent; the call fide is the longeil; and the whole circumference about 150 leagues. It is bounded on the north by the Straits of Beileifie, which feparate it from Labrador; on the eafl and D Rmth w r N E Newfound-fouth it hath the Atlantic Ocean, and on the weft larid- the Gulph of St Laurence. The climate 19 rather * fevere; and the foil, at leaft on the fea-coaft, wh1Ch is all that we know of it, is poor and banen. A few kitchen vegetables with ftrawbernes and ralpber- ries are all its produce. The country within land is mountainous, and abounds with timbei ; there are feveral rivers which are plentifully ftored with various forts of fdh, abundance of deep bays, and many good ports. St John’s and Placentia are the two principal fettlements, and at each of thefe there is a fort ; the number of people who remain here in the winter hath been computed at 4000. Ihe French, by^the tieaty of Utrecht, were permitted to fifh from Cape Bona- vifta on the eaft fide round the north of the ifland to Point Rich on the weft; and by the treaty of Paris, they are allowed the ifles of St Pierre and Miquelon, upon which they are to dry their fi(h, but not to cred fortifications of any kind. _ . The great importance of this place anfes from its fifhery, which is 111 part carried on by the inhabitants at the feveral harbouis, which are about 20 in number, who take vaft quantities of cod near the coaft, which they bring in and cure at their leifure, in order to have it ready for the (hips when they arrive. But the great and extenhve fifticry is on the banks at fome di- ftance from the ifland. The great bank lies 20 leagues from the neareft point of land from the latitude 410 to 490, ftretchtng 300 miles in length and 7 5 in breadth. To'the eaft of this lies the Falfe Bank; the next is ftyled Vert or ihe Green Bank, about 240 miles long, and 120 over; then Banquero, about the fame fize ; the fhoals of Sand Ifland, Whale Bank, and the Bank of St Peter’s, with feveral others of lefs note, all abound¬ ing with fifh. The cod are caught only by a hook ; and an expert fifher will take from 15® to 300 and upwards in a day; for the lifli never bite in the night, and the labour is very great. The feafon is from May to O&ober, in the height of which there are from 500 to 700 fail up¬ on the banks at a time. The fifh caught in the fpring- months are beft; they are cured in very different ways. Some are ftyled white fijh, others mud fijh, which are flowed and falted in the hold, and will not keep long ; but the beft and moft valuable are the dried cod. The quantity taken is prodigious ; yet in fome feafons and in different places varies confidcrably, as the fifh fre¬ quently change their ftations. The jijhing-foips, as they are called, lie upon the banks, with the help of their boats take and cure their own ffh, and as foon as they are full fail for a market. The fack-fhips proceed dire&ly to the ifland, where they purchafe fifh from the inhabitants either by barter or bills of exchange. The principal markets for cod are Spain, Portugal, Italy, and the Weft Indies. The value of this fifhery is computed at fome hundred thoufand pounds annual¬ ly ; employing, befides feveral hundred fhips, fome thoufands of feamen, and affording a maintenance to a number of tradefmen of different occupations, by which many large towps on the weft fide of England accu¬ mulate much wealth, and at the fame time contribute in many refpedf s to the benefit of the public. The great utility of this fifhery was very early feen, and very vigoroufiy purfued ; for in the begin¬ ning of the reign of king James 1. -we had two bun- 26 1 NEW dred and fifty fail employed therein. It is computed, Newfound, that three quintals of wet fifh make one quintal of la“d- t dried cod. Befides, the livers of every hundred quin- ■’Y-—' tals make a hogfhead of oil; and exclufive of thefe, there are many leffer advantages that go in diminution of the expence. The fifhery, as we have faid above, produces differently in different feafons; but it is judged to be a very good one when it produces 300,000 quin¬ tals of fifh and 3000 barrels of oil, both equally fale- able and valuable commodities. As every fhip carries twelve, and each of their boats eight men, and as thefe return home in fix months, there cannot be a more noble nurfery for feamen. The artificers and traders employed in building, vi&ualling, and repairing thefe veffels, are very numerous in the refpe&ive ports from which they fail. Thefe circumftances juftify the par¬ ticular attention paid by government to this branch of the public fervice ; in refpeft to which, that they may be well informed, an annual and very diftinft account, by which the whole is feen at one view, is delivered by the proper officer to the governor of Newfound¬ land, that is, to the commodore of his majefty’s fqua- dron. Mr Pennant, in the appendix to his Ardlic Zoology, gives us, from what appears to be very good authority, the following account of this ifland. “ Within the circuit of 60 miles of the fouthern part, the country is hilly, but not mountainous. The hills increafe in height as they recede from the fea ; their courfe is irregular, not forming a chain of hills, but rife and fall abruptly. The coafts are high, and the fhores moft remarkably bold. The fame may be faid of almoft every part of this vaft ifland. The country is much wooded, and the hills (fuch which have not flat tops to admit the rain to ftagnate on them) are clothed with birch, with hazel, fpruce, fir, and pine, all fmall; which is chiefly owing to the in¬ habitants taking off the bark to cover the fifh ftages. This peninfula is fo indented by the fine and deep bays of Placentia, St Mary, Conception, and Trinity, that it may be eafily penetrated in all parts, which is done for the fake of fowling, or the procuring of fpais for mafts, oars, &c. The ifland is on all fides more or lefs pierced with deep bays, which peninfulate it in many places by ifthmufes moft remarkably narrow.— The mountains on the fouth-weft fide, near the fea, are very high, and terminate in lofty headlands Such are Chapeau rouge, a moft remarkably high promon¬ tory, Cape St Mary’s, and Cape le Hune. Such in general is the formation of the ifland ; on the north- eaft, moft of the hilh is the interior part of the coun¬ try terminate pyramidally, but form no chain. The interior parts of the country confift chiefly of moraf- fes, or diy barren hammocks, or level land, with fre¬ quent lakes or ponds, and in fome places covered with ftunted black fpruce. The rivers of Newfoundland are unfit for navigation, but they are of ufe in float¬ ing down the wood with the fummer floods. Still the rivers and the brooks are excellent guides for the hunters of beavers and other animals, to penetrate up the country, which as yet has never been done deeper than 30 miles. Near the brooks it is that timber is - commonly met with, but feldom above three or four miles inland, and in valleys ; the hills in.the noithera dtftrifft being naked and barren. ,l In fonae parts of Newfoundland there is timber fuf- ficientlv NEW f 27 ] NEW "Newfound-fidently large, for the building ©f merchant fhips: the knd- Js made of juniper, and the pine furnilhes mafts and yards ; but as yet none has been found large enough for a mart for a large cutter. The filhery is divided into two feafons ; that on the fhore, or the fhore feafon, commences about the 20th of April, and ends about the loth of OiSlober ; the boats fifh in from four to 20 fathoms water. The moft important, the bank'fifhing feafon, begins the icth of May, and con¬ tinues till the lad of September, and carried on in 30 to 45 fathoms depth of water. Banking veffels have fail¬ ed from St John’s to the bank as early as the 12th of April. At fil'd they ufe pork or birds for a bait ; but as they catch fifh, they fupply themfelves with a fhell fifh called clams, which is found in the belly of the cod. The next bait is the lobfter ;• after that the her¬ ring and the launce, which laft till June, when the ca- pelan comes on the coaft, and is another bait. In Au- guft the fquid comes into ufe, and finally the herring again. The greateft number of cod-fifh taken by a fingle fifherman in the feafon has been 12,000, but the average is 7000 The largeft fifh which has been ta¬ ken was four feet three inches long, and weighed 46 pounds. A banking veffel of 10,000 fifh ought to be filled in three weeks, and fo in proportion ; and 80 quintals (112 lb. each) for a boat in the fame time. “ In 1785,541 Englifh veflels fifhed on the bank, a number exceeding that of the French. A heap of dried fifh, 20 feet long and ten wide, and four deep, contains 300 quintals Such an heap fettles, in the courfe of 48 hours after it is made, about An ex¬ traordinary fplitter will fplit five quintals of fifh in an hour. The average in that time is two. There is no fifhing during winter, on account of the inclemency of the feafon It is fuppofed that the fifh in a great meafure quit the banks before that time, as in general they are very fcarce when the fifhing vefl’els go upon the banks early in the fpring. “ There are a few firml! towns on the coafls, which have gardens fown with Englifh pulfe ; but many of the inhabitants quit the country in winter. “An admiral or ibme fea officer is governor of New¬ foundland. He fails from England in May, and re¬ turns by the 30th of November.” NEWMARKET, in Cambridgefhire, 13 miles from Cambridge, 13 from St Edmundfbury, and 60 from London, is a town with one long ftreet, the north fide in Suffolk, the fouth fide in Cambridge¬ fhire. It is a healthy place, and a great thorough¬ fare in the road from London to Norfolk; but Hands moftly by the horfe-races every year in April and Oc¬ tober, here being the fineft courfe in England ; on which there is a houfe for the king when he comes to the races, wffiich was built by Charles II. The king gives a plate or two every year, befides thofe given by the nobility ; and wagers are laid upon the horfes, which are feldom under 500 1. and often above icool, Here are two coffeehoufes, at which, every night and morning during the races, thc.e is gaming, as there is alfo at the houfes of the nobility and gentry. Here are alfo cock-matches Here is a little chapel, which is a chapel of eafe to the mother-church at cDifton ; and another in the Suffolk fide, which is pa- j-odual. The town was burnt in 1683, but foon re¬ built. Here are two charity-fchools, one for 20 boys, another for 20 girls, fupported by 501. a-year, firfl fettled by Queen Anne. Here is a market on Tuef- days and Thurfdays, and fairs on October 28. and W h i t fu n-T ue fday. NEWROSS, a borough town in the county of Wexford, and province of Leinfler, in Ireland, 67 miles from Dublin. It returns two members to par¬ liament ; the patronage is in the families of Totten¬ ham and Leigh. This town was formerly walled, and fome of the gates ftili remain. It lies on the river Barrow, which is here very deep, and fhips of burden can come up to the quay even when the tide is out. The church is large, but the cutlom-houfe and quay are both fmall, and fometimes overflooded many feet. It is one of the ilaple ports for exporting wool, yet its trade is but inconfiderable ; beef and butter are the principal articles exported. Here is a barrack for a troop of horfe, and a good ferry into the county of Kilkenny. Near this town is a charter-fchool. It is alfo a poll town, and gives title of earl to the fa¬ mily of Gore. It was formerly fortified, and adorn¬ ed with many religious houfes, am@ng which was a crouched friary, built on the fummit of a hill in the town ; bnt one of the friars having killed a principal inhabitant, the whole body of the people arofe, put the friars to death, and totally deftroyed the friary ; on the fite of which the monaftery of St Saviour, for conventual Francifcans, was afterwards erefted by Sir John Devereux ; and the call end of this laft building is now the pariih-church. A friary for Eremites, fol¬ lowing the rule of St Auguftine, was alfo founded here in the reign of Edward III. NEWS-papers, periodical publications, daily, weekly, &c. for the purpofe of communicating to the world every thing of importance, whether political or literary, &c. which is going on. They have tended much to the diffemination of learning, and have fer- ved many other valuable purpofes ; and while they are carried on with candour, impartiality, and ability, they are unqueftionably a great national benefit. When this, however, is not the cafe, and it often happens, they difgrace their authors, and are highly injurious to the public. They were firft publiftied in England, Auguft 22. 1642. journaldes Savans, a French paper, was rirft publiffiedin 1665, though one was printed in England, under the title of the Public Intelligencer, by Sir Roger L’Eftrange, 1663, which he dropped, on the publication of the firft London Gazette Newf- papers and pamphlets were prohibited by royal pro¬ clamation 1680. Though at the revolution prohibi¬ tions of this kind were done away, and the prefs fet at liberty, yet newfpapers were afterwards made ob« jefts of taxation, and for this purpofe were tirft ftamp- ed 1713. The number of them, however, gradually increafed; and there were printed in the whole king¬ dom during the years 1775, 12,680,000.; 1776, 12,830,000; *777> 13»I5°>642 ? 1778, 13,240,059; 1779, 14,106,842; 1780, 14,217,371; 1781, 14,397,620; 7782, 15,272,519. They are now ftill more numerous. NEW-style, firft ufed in England in 1753, was *n", troduced into the weftern world by Pope Gregory XIIL See Chronology, n« 24. D 2 Newrofs II New- flyle. NEWT. NEW [ 28 ] N E W NEWT, or Eft, in Zoology, the common li¬ zard. See Lace^ta. NEWTON (Sir Ifaac), one of the greateft philofo- phers and mathematicians the world has ever produced, was the only child of Mr John Newton of Colefworth, not far from Grantham in Lincolnfhire, who had an eilate of about \2o\. per annum, which he kept in his own hands. He was born at that place on Chrift- mas day 1642. His father dying when he was young, his mother’s brother, a clergyman of the name of Ay- /cough, or AJkeiu, who lived near her, and direfted all her affairs after the death of Mr Newton, put her fon to fchpol at Grantham. When he had linifhed his fchool -learning, his mother took him home, intending, as fire had no other child, to have the plea-fure of his company ; and that he, as his father had done, fhould occupy his own eftate. But his uncle happening to find him in a hay-loft at Grantham working a mathe¬ matical problem, and having otherwife obferved the boy’s mind to be uncommonly bent upon learning, he prevailed upon her to part with him ; and fire fent him to Trinity College in Cambridge, where her brother, having himfelf been a member of it, had ftill many friends. Ifaac was foon taken notice of by Dr Ifaac Barrow ; who, obferving his bright genius, contract¬ ed a great friendfhip for him. M. de Fontenelle tells us, “ That in learning mathematics he did not ftudy Euclid, who feemed to him too plain and fimple, and unworthy of taking up his time. He underftood him almoll: before he read him ; and a caff of his eye upon the contents of his theorems was fufficient to make him mailer of them. He advanced at once to the geometry of Des Cartes, Kepler’s optics, &c. It is certain, that he had made his great difeoveries in geometry, and laid the foundation of his two famous works the Princip'ia and the Optics, by the time he was 24 years of age.” In 1664, he took the degree of bachelor of arts; and in 1668 that of mailer, being eleefed the year before, fellow of his college. Tie had before this time difeo- vered the method of fluxions ; and in 1669 he was chofen profeffor of mathematics in the univerfity of Cambridge, upon the refignation of Dr Barrow. The fame year, and the two following, he read a courfe of optical le&ures in Latin, in the public fchools of the univerlity ; an Englifh tranflation of which was print¬ ed at London in 1728, in 8vo, as was the Latin ori¬ ginal the next year in 410. From the year 167 c to 1679, he held a correfpondence by letters with Mr Henry Oldenburg fecretary of the royal focicty, and Mr John Collins fellow of that fociety ; which letters contain a variety of curious obfervations. Concerning the origin of his difeoveries, we are told, that as he fat alone in a garden, the falling of feme apples from a tree led him into a fpeculation on the power of gravity ; that as this power is not diminifhed at the remote!! diftahee from the centre of the earth to which we can rife, it appeared to him reafonable to con¬ clude, that it muff extend much farther than was ufually thought; and purfuing this fpeculation, by comparing the periods of the feveral planets with their diftances from the fun, he found, that if any power like gravity held them in their courfes, its ftrength mull decreafe in the duplicate proportion of the in- creafe of diftance. This inquiry was dropped ; but re¬ fumed again, and gave rife to his writing the treatife Ne which he publilhed in 1687, under the name of Ma- thematical Principles of Natural Philofophy ; a work looked upon as the produ&ion of a celeftial intelligence rather than of a man. The very fame year in which this great work was publilhed, the univerfity of Cam¬ bridge wa« attacked by king JamesII. whenMrNewton was one of its molt zealous defenders, and was accord¬ ingly nominated one ol the delegates of that univerfity to the high-commifiion court; and the next year he was chofen one of their members for the convention-pailia- ment, in which he fat till it was diffolved. In 1696, Mr Montague, then chancellor of the exchequer, and afterwards earl of Halifax, obtained for him of the. king the office of warden of the mint ; in which em¬ ployment he was of fignal fervice, when the money was called in to be recoined. Three years after, he was appointed mailer of the mint ; a place of very con- fiderable profit, which he held till his death. In 1699, he was eledled one of the members of the r^yal aca¬ demy of fciences at Paris. In 1701, he was a fecond time chofen member of parliament for the univerfity oi . Cambridge. In 1704, he publilhed his Optics ; which is a piece of philofophy fo new, that the fcience may be conlidered as entirely indebted to our author. In 1 705, he was knighted by queen Anne. In 1707, he pub¬ lilhed his Arithmetic a CJniver/alis. In 1711, his Ana- lyjis per Sfucmtitatum Series, Fiuxiones et Di/erentias, &c. was publifhed by William Jones, Efq. In 1712, feveral letters of his were publilhed in the Commercium Epifiolicum. In the reign of George I. he was bet¬ ter known at court than before. The princefs of Wales, aftwerwards queen-confort of England, ufed frequently to propofe queftious to him, and to declare that Ihe thought herfelf happy to live at the fame time with him, and have the pleafure and advantage of his converfation. He had written a treatife of ancient chronology, which he did not think of publilhing ; but the princefs defired an abftraft, which ffie would never part with. However, a copy of it Hole abroad, and was carried into France ; wffiere it was tranflated and printed, with fome obfervations, which were af¬ terwards anfwered by Sir Ifaac. But, in 1728, the Chronology itfelf was publiflied at London in quar¬ to ; and was attacked by feveral perfons, and as zea- loufly defended by Sir Ifaac’s friends. The main defign of it was to find out, from fome tra&s of the molt ancient Greek attronomy, what was the pofi- tion of the colures with refpe& to the fixed liars, in the time of Chiron the centaur. As it is now known that thefe flars have a motion in longitude of one degree in 72 years, if it is once known thro’ what fixed liars the colure paffed in Chiron’s time, by taking the diltance of thefe flars from thofe through which it now paffes, we might determine what num¬ ber of years is elapfed fince Chiron’s time. As Chi¬ ron was one of the Argonauts, this would fix the time of that famous expedition, and confequently that of the Trojan war ; the two great events upon which all the ancient chronology depends. Sir Ifaac places them 500 years nearer the birth of Chrift than other chro- nologers generally do. This great man had all along enjoyed a fettled and equal Hate of health to the age of 80, when he began to be afflided with an incontinence of urme. NiWtnr* NEW f 29 1 NEW urine. However, for the five following years, he h?d great intervals of cafe, which he procured by the ob- fervance of a Uriel regimen, it was then believed that he certainly had .the ftoae ; and when the pa- roxyfms were fo violent, that large drops of fweat ran down his face, he never uttered the lead complaint, or fcxpreffed the fmalleft degree of impatience ; but, as foon as he had a moment’s cafe, would fmile and talk with his ufual cheerfulnefs. Till then he always read and wrote feveral hours in a day. He had the pexfedl ufe of all his fenfcs and underftanding till the day be¬ fore he died, which was on the 20th ofMarch 1726-7, in the 85th year of his -age.—He lay in date in the Jerufaiem chamber at Well minder, and on the 28th of March his body was conveyed into Weilminder ab¬ bey ; the pall being fupported by the lord chancellor, the dukes of Montrofe and Roxburgh, and the earls of Pembroke, Sudcx, and Macclesfield. The bifhop of Rocheder read .the funeral office, being attended by all the clergy of the church. The corpfe was interred iud at the entrance into the choir, where a noble mo¬ nument is ere&ed to his memory. Sir li’aac was of a middling dature, and in the latter part of his life fume what inclined to be fat. His coun¬ tenance Wc6 pkafing, and at the fame time venerable. Pie never made ufe of fpedlacles, and loft but one tooth during his whole life. His temper is faid to have been fo equal and mild, that no accident could difturb it. Of this the follow- , ing*remarkable indance is related. Sir Ifaac had a favourite littje dog, which he called Diamond; and being one day called out of his dudy into the next room,'Diamond was left behind. When Sir Ifaac re¬ turned, having been abfent but*a few minutes, he had the mortification to find, that Diamond having thrown down a lighted candle among fome papers, the nearly finifhed labour of many years was in flames, and almod confirmed to allies. This lofs, as Sir Ifaac was then very far advanced in years, was irretrievable ; yet, without once linking the dog, he only rebuked him with this exclamation, “ Oh ! Diamond ! Diamond 1 thou little knoweft the mifehief thou had done !” He was a great lover of peace ; and would rather have chofen to remain in obfeurity than to have the calm of life ruffled by thofe dorms and difputes which genius and learning always draw upon thofe that are peculiarly eminent for them. In contemplating hi^ ge¬ nius it prefently becomes a doubt, which of thefe en¬ dowments had the greated (hare, fagacity, penetration, firength, or diligence : and, after all, the mark that fe6ms mod to didinguilh it is, that he himfelf made the jufted ellimation of it, declaring, that, if he had done the world any fcrvice, it was due to nothing but indudry and patient thought; that he kept the fub- je& under confideration condantly before him, and waited till the firft dawning opened gradually, by little and little, into a full and clear light. It is faid, that when he had any mathematical problems or fo- lutions in his mind, he would pever quit the fubjedl on any account. Dinner has been often three hours ready for him before he could be brought to table : and his man often faid, when he has been getting up in a morning, he has fometimes begun to drefs, and with one leg in his breeches fat down again on the bed, where he has remained for hours before he got his cloaths on. From his love of peace, no doubt, arofe Newton, that unufual kind of horror which he had for all dif- putes ; a fteady unbroken attention, free from thofe frequent recoilings infeparably incident to others, was his peculiar felicity ; he knew it, and he knew the value of it. No wonder then that controverfy was looked on as his bane. When fome objedtions, haftily made to his difeoveries concerning light and colours, induced him today alide the delign he had of publiffling pis optic lectures, we find him reflecting on that difpute, inco which he was unavoidably drawn thereby, in thefe terms : “ I blamed my own imprudence for parting with fo real a bleffing as my quiet, to run after a fna- dow.” It is true, this fhadow (as Mr Fontenelie ob- ferves). did not efcape him afterwards, nor did it coil him that quiet whi2h he .fo much valued, but proved as much a real happiaefs to him as his quiet itfelf; yet- this was a happinefs of his own making : he took a ■ refolution, from thefe difputes, not to publilh any more abijut that theory till he had put it above the reach of controverfy, by the exa&eit experiments and the ftridteft demonilrations ; and accordingly it has never been called in queflion finc£. In the fame temper, af¬ ter he had fent the manufeript of his Principia to the Royal Society, with his confent to the printing of it by them, upon Mr Hook’s injurioufly infilling that himfelf had demonflrated Kepler’s problem before our author, he determined, rather than be involved again in a controverfy, to fupprefs the third book, and was very hardly prevailed upon to alter that refolntiofl. It is true, the public was thereby a gainer ; that book, which is indeed no more than a corollary of fome pro- pofitions in the firft,- being originally drawn up in the popular way, with a delign to publilh it in that form ; whereas he was now convinced that it would be bell not to let it go abroad without a ftrid demonflration. After all, notwithftanding his anxious care to avoid evety occafion of breaking his intenfe application to ftudy, he was at a great diftance from bring fteeped. in philofophy : on the contrary, he could lay afide his thoughts, though engaged in the molt intricate re- fearches, when his other affairs required his attend¬ ance ; and, as foon as he had leifure, refume the fub- je£t at the point where he had left off. This he feems to have done not fo much by any extraordinary ftrength - of memory, as by the force of his inventive faculty, to which every thing opened itfelf again with eafe, if no¬ thing intervened to ruffle him. The readinefs of his invention made him not think of putting his memory ' much feo the trial : but this was the offsprina: of a vi¬ gorous intenfenefs of thought, out of which he was but a common man. He fpent, therefore, the prime of his age in thofe abftrufe refearches, when his fituation in a college gave him leifure, and even while ftudy was his proper jprofeffion. But as foon as he was removed to the mint, he applied hirafelf chiefly to the bufinefs of that office ; and fo far quitted mathematics and philo¬ fophy, as not to engage in any purfuits of either kind afterwards. 'The amiable quality of modefly is reprefented as Handing foremoft in the charadler of this great man’s mind and manners. It was in reality greater than can be eafily imagined, orfwiIl be readily believed : yet it always continued fo without any alteration, though the whole world, fays Fontendle, confpired againft it j and t NEW [ 30 ] N E W Newson. and let us add, though he was thereby robbed of his dent ceconomy, put it in his power. Nicholas Mercator publiihing his invention of fluxions. Logarithmotechnia in 1668, where he gave the qua¬ drature of the hyperbola by an infinite feries, which was the firft appearance in the learned world of a feries of this fort drawn from the particular nature of the curve, and that in a manner very new and abftra&ed ; Dr Bar- row, then at Cambridge, where Mr Newton, at that time about 26 years of age, refided, recollected that he had met with the fame thing in the writings of that young gentleman; and there not confined to the hyperbola only, but extended, by general forms, to all forts of curves, even fuch as are mechanical ; to their quadra¬ tures, their rectifications, and their centres of gravity ; to the folids formed by their relations, and to the fu- perficies of thofe folids ; fo that, when their determi¬ nations were poffible, the feries flopped at a certain point, or at leaft their fums were given by ftated rules : and, if the abfolute determinations were impofiible, they could yet be infinitely approximated ; which is the happieft and moft refined method, fays Mr Fonte- nelle, of fupplying the defeCfs of human knowledge that man’s imagination could pofiibly invent. To be tnaftcr of fo fruitful and general a theory was a mine of gold to a geometrician ; but it was a greater glory to have been the difeoverer of fo furprifing and ingenious a fyftem. So that Mr Newton, finding by Merca¬ tor’s book, that he was in the way to it, and that others might follow in his traCf, fhould naturally have been forward to open his treafures, and fecure the pro¬ perty, which confifted in making the difeovery ; but he contented himfelf with his treafure which he had found, without regarding the glory. What an idea does it give us of his unparalleled modefty, when we fee him declaring, that he thought Mercator had en¬ tirely difeovered his fecret, or that others would, be¬ fore he was of a proper age for writing ? His MS. up¬ on infinite feries was communicated to none but Mr John Collins and the lord Brounker; and even that had not been complied with, but for Dr Barrow, who would not fuffer him to indulge his medefty fo much and the ancient Corpufcular. We have twoN ,'w«>nisl remarkable inftances of his bounty and generofity j Pbdofojhy, one to Mr M'Laurin, profefTor of mathematics at * ^ Edinburgh, to whom he offered 20 1. per annum ; and the other to his niece Barton, who had an an- nuity of 100 1. per annum fettled upon her by him. When decency upon any occafion required expence and (hew, he was magnificent without grudging it, and with a very good grace ; at all other times, that pomp which feems great to low minds only, was utterly retrenched, and the expence referved for better ufes. He never married, and perhaps he never had leifure to think of it. Being immerfed in profound ftudies during the prime of his age, and afterwards en¬ gaged in an employment of great importance, and even quite taken up with the company which his me¬ rit drew to him, he was not fenfible of any vacancy in life, nor of the want of a companion at home; He left 32,000!. at his death ; but made no will, which Mr Fontenelle tells us was becaufe he thought a le¬ gacy was no gift. As to his works, befides what were publifhed in his life-time, there were found after his death, among his papers, feveral difeourfes upon the fubjefts of antiquity, hiftory, divinity, chemifiry, and mathematics, feveral of which were publilhed at dif¬ ferent times. Nkivtonun Philofophy, the doftrine of the univerfe, and particularly of the heavenly bodies, their laws, af-' fe&ions, &c, as delivered by Sir Ifaac Newton. 1 The term Newtonian Philofophy is applied very dif- Different ferently ; whence divers confufed notions relating<’piulons thereto - Some authors under this philofophy in-thi's'^hilu- elude all the corpufcular philofophy, confidered as itfophy. now ftands corrected and reformed by the difeoveries and improvements made in feveral parts thereof by Sir Ifaac Newton. In which fenfe it is that Grave- fande calls his elements of phyfics, Introdudio ad Phi- lofophiam Newlonianam. And in this fenfe the New¬ tonian is the fame with the new philofophy ; and ftands contradiftinguiftied from the Cartefian, the Peripatetic, as he defired. It is further obferved, concerning this part of his charafter, that he never talked either of himfelf or others, nor ever behaved in fuch a manner as to give the moft malicious cenfurers the leaft occafion even to fufpeft him of vanity. He was candid and affable, and always put himfelf upon a level with his company He never thought either his merit or his reputation fuffi- cient to excufe him from any of the common offices of focbl life ; no Angularities, either natural or atle&ed, diftinguififed him from other men. Though he was firmly attached to the church of England, he was averfe to the perfecution of the non-conformifts. He judged of men by their manners ; and the true fchif- matics, in his opinion, were the vicious and the wicked. Not that he confiped his principles to natural religion, for he was thoroughly perfuaded of the truth of reve- ^ .atioi* 5 and amidft the great variety of books winch he had conftantly before him, that which he ftudied with the greateft application was the Bible : and he under flood the nature and force of moral certainty as well as he did that of a ftri£t demonftration. Sir Ifaac did not negleft the opportunities of domg good, when the revenues of his patrimony, a profitable employment, improved by a pru- Others, by Newtonian Philofophy, mean the method or order which Sir Ifaac Newton obferves in philofo- phifing ; vi%. the reafoniag and drawing of conclu- lions directly from phenomena, exclufive of all previous hypothefes ; the beginning from Ample principles ; de¬ ducing the firft powers and laws of nature from a few feleft phenomena, and then applying thofe laws, &c. to account for other things. And in this fenfe the Newtonian philofophy is the fame with the experimen¬ tal philofophy, and ftands oppofed to the ancient Cor~ pnftular. Others, by Newtonian philofophy, mean that where¬ in phyfical bodies are coniidered mathematically, and where geometry and mechanics are applied to the fo- lution of the appearances of nature. In which fenfe the Newtonian is the Tame with the mechanical and mathe¬ matical philofophy. i., Others again, by Newtonian philofophy, underftand that part of phyfical knowledge which Sir Ifaac New¬ ton has handled, improved, and demonftrated, in his Principia. Others, laftly, by Newtonian philofophy, mean the new principles which Sir Ifaac Newton has brought into philofophy ; the new fyftem founded thereon; and the new lolutions of phenomena thence deduced ; or definitions on which the philo- fophy is founded. .3 in fit a N E W [ lofc ^i:wton'an or that which characterizes and diftinguilhes his phi- ^ yhdofi’pfiy.lofophy from all others.—Which is the fenfe wherein we fhall chiefly confider it. As to the hiftory of this philofophy, we have no. thing to add to what has been given in the preceding article. It was firft made public in the year 1687, by the author, then a fellow of Trinity-college, Cam¬ bridge ; and in the year 1713, republilhed with confi- derable improvements.—Several authors have fince at¬ tempted to make it plainer ; by fetting afide many of the more fublime mathematical refearches, and fubfti- tuting either more obvious reafonings or experiments in lieu thereof; particularly Whifton in his Praleft. Phyf Mathemat. Gravefande in Element. & Jnjlit. and Dr Pemberton in his View. The whole of the Newtonian Philofophy, as delivered by the author, is contained in his Principia, or Ma¬ thematical Principles of Natural Philofophy. He founds his fyftem on the following definitions. 1. The quantity of matter is the meafure of the fame, arifing from its denfity and bulk conjunftly.— Thus air of a double denfity, in a double fpace, is quadruple in quantity ; in a triple fpace, fextuple in. quantity, &c. 2. The quantity of motion is the meafure of the fame, arifing from the velocity and quantity of mat¬ ter conjun&ly. This is evident, becaufe the motion of the whole is the motion of all its parts; and there¬ fore in a body double in quantity, with equal velocity, the motion is double, &c. 3. The vis injlta, or innate force of matter, is a defined and pOWer of refilling, by which every body, as much as objected to»’n jjeSj endeavours to perfevere in its prefent ftate, whether it be of reft, or moving uniformly forward in a right line.—This definition is proved to be juft, only by the difficulty we find in moving any thing out of its place ; and this difficulty is by fome reckoned to proceed only from gravity. They contend, that in thofe cafes where we can prevent the force of gravity from adting upon bodies, this power of refiftance be¬ comes infenfible, and the greateft quantities of matter may be put in motion by the very leaft force. Thus there have been balances, formed fo exact, that when loaded with 200 weight in each fcale, they would turn by the addition of a fingle drachm. In this cafe 400 lb. of matter was put in motion by a fingle drachm, i. e. by Ttt-5-o parts of its own quantity : and even this fmall weight, they fay, is only needfary on account of the inaccuracy of the machine ; fo that we have no reafon to fuppol'e, that, if the fridtion could be entirely removed, it would take more force to move a tun weight than a grain of fand. This objedtion, however, is not taken notice of by Sir Ifaac ; and he beftows on the refilling power above-mentioned the name of vis inertia ; a phrafe which is perhaps not well chofen,and with which inferior writers have endeavour¬ ed to make their readers merry at the cxpence of New¬ ton. A force of inactivity, it has been faid, is a forcelefs farce ; and analogous to a. black white, a cold heat, and a tempeftuous calm. But objedtions of more importance have been made to the whole of this dodlrise than thofe which merely \f°vtb Def‘- refpedt the term vis inertiee. “ An endeavour to re- r/ma*n at relt (we are told*) is unneceffary, whilft no- tbt Prin:i- thing attempts to disturb the reft. It is likevvjfe im- pa, &C. * Vtunfs Examina¬ tion ■] the thir.t and 31 ] NEW pofiible t© be conceived, as it implies a contradiction. Newtonian A man, by oppofing force to force, may endeavour ofophy. not to be moved ; but this oppofition is an endeavour ^ to move, not with a defign to move, but by counter- adting another force to prevent being moved. An endeavour not to move therefore cannot exift in bo¬ dies, becauie it is abfurd ; and if we appeal to fadt, we ftiall find every body in an adlual and conftant en¬ deavour to move.” It has been likewife obferved, and we think juftly, that “ if bodies could continue to move by any innate force, they might alfo begin to move by that force. For the fame caufe which can move a body with a given velocity at one time, could do it, if prefent, at any other time; and therefore if the force by which bodies continue in motion were innate and eflential to them, they would begin to move of themfelves, which is not true.” Newton indeed fays that this innate force is the caufe of motion under certain circumftances only, or when the body is adted upon by a force impreffed ab extra. But if this impreffed force do not continue as well as begin the motion, if it ceafe the inftant that the impreffion is over, and the body continue to move by its vis inertia, why is the body ever flopped? “ If in the beginning of the motion the body, by its innate force, overcomes a certain refiftance of fric¬ tion and air, in any following times, the force being undiminifhed, it will overcame the fame refiftance for ever. Thefe refiftances, therefore, could never change the ftate of a moving body, becaui'e they cannot change the quantity of its motive force. But this is~ contrary to univerfal experience.” For thefe reafons we are inclined to think that bodies are wholly paf° } five; that they endeavour nothing; and that they con¬ tinue in motion not by any innate force or vis injitafbxiX. by that force, whatever it be, which begins the motion, and which, whilll it remains with the moving body, is gradually diminifhed, and at laft overcome by op- pofite forces, when the body of courfe ceafes to move. 4. An impreffed force is an adtion exerted upon a body, in order to change its ilate, either of reft, or of moving uniformly forward in a right line.— i'his force confifts in the adtion only; and remains no longer in the body when the adtion is over. For a body maintains every new ftate it acquires by its vis inertia only. It is here implied, and indeed fully expreffed, that motion is not continued by the fame power that pro¬ duced it. Now there are two grounds on which the truth of this dodtrine may be fuppofed to reft. “ Firjl, On a direct proof that the impreffed force does not remain in the body, either by ihowing the nature of the force to be tranfitory and incapable ef more than its firft adtion ; or that it adts only on the furface, and that the body efcapes from it; or that the force is fomewhere elfe, and not remaining in the body. But none of thefe diredt proofs are offered “ Secondly, It may reft on an indirect proof, that there is in the nature of body a fuffieient caufe for the continuance of every- new ftate acquired ; and that therefore any adventitious force to continue mo¬ tion, though neceffary for its produdtion, is fuper* ffuous and inadmiffible. As this is the very ground on which the fuppofition Hands, it ought to have been indubitably certain that the innate force of the body 3 isiC Newtonian Phiiofophy, & 'h'oung i Examina¬ tion, &.C. 4 Of time. 5 Space. 6 •Place de¬ fine J. N E W [ -32 5s fufixcient to perpetuate the motion it has once ac¬ quired, before the other agent, by which the motion was communicated, had been difmiffed trom the oflice. Rut the innate force of body has been fhovvn not to be that which continues its motion ; and there¬ fore the proof, that, the impreffed force does not re¬ main in the body, fails. Nor indeed is it in this cafe defirable to fupport the proof, becaufe we fhould then be left without any reafon for the continuance of motion*.” When we mention an impreffed force, we mean fuch a force as is'communicated either at the furface of the body or by being diflufed through the mafs. 5. A centripetal force is that by which bodies are drawn, impelled, or any way tend towards a point, as to a centre.—The quantity of any centripetal force may be confidered as of three kinds, abfolute, accele¬ rative, and motive. 6. The ah folate quantity of a pentrifygal force is ■the meafure of the fame, proportional to the efficacy of the caufe that propagates it from the centre, through the fpaces round about. * 7. The accelerative quantity of a centripetal force is the meafure of the fame, proportional to the velo¬ city which it generates in a given time. 8. The motive quantity of a centripetal'force is a meafure of the fame, proportional to the motion which it generates in a given time.—This is always known by the quantity of a force equal and contrary to it, that is jult fufficient to hinder the defeent of the body. Sch OLIA. I. Abfolute, true, and mathematical time, of itfelf, and from its own nature, flows equably, without re¬ gard to any thing external, and, by another name, is called duration. Relative, apparent, and common time, is fome fenfrble and external meafure of dura¬ tion, whether accurate or not, which is commonly ufed inftead of true time ; fuch as an hour, a day, a month, a year, &c. II. Abfolute fpace, in its own nature, without re¬ gard to any thing external, remains always frmilar and immoveable. Relative fpace is fome moveable dimenlion or meafure of the abfelute fpaces; and which is vulgarly taken for immoveable fpace. Such is the dimenlion of a fubterraneous, an aerial, or celeftial fpace, determined by its polition to bodies, and which is vulgarly taken for immoveable fpace ; as the di¬ dance of a fubterraneous, an Eerial, or celettial fpace, determined by its pofition in refpett of the earth. Abfolute and relative fpace are the fame in figure and magnitude ; but they do not remain always nu- N merically the fame. For if the earth, for inftance, moves, a fpace of our air which, relatively and in refpeft of the earth, remains always the fame, will at one time be one part of the abfolute fpace into which the earth pafles; at another time it will be another part of the fame ; and fo, abfolutely underitood, it will be perpetually mutable. III. Place is a part of fpace which a body takes up ; and is, according to the fpace, either abfolute or relative. Our author fays it is part of fpace ; not the fituation, nor the external furface of the body. For the places of equal folids are always equal; but their fuperficies, by reafoa of their dilfimilar figures, ?r 241.. ] ■N E W are often unequal. Pofitions properly have no quam Newtoni'a- tity, nor are they fo much the places themfelves as the properties of places. The motion of the whole is the fame thing with the fum of the motions of the parts; that is, the tranflation of the whole out ef its place is the f$me thing with the fum of the tranflations of the parts out-of their places : and therefore the place of the whole is the fame thing with the fum of the pjaces of the parts ; and for that reafon it is internal, and in the whole body. IV. Abfolute motion is the tranflation of a body of motiot from one abfolute place into another, and relative mo¬ tion the tranflation from one relative place into ano¬ ther. Thus, in a flrip under fail, the relative place of a body is that part of the flrip which the body pof- fefles, or that part of its cavity which the body fills, and which therefore moves together with the flrip ; and relative reft is the continuant e of the body in the fame, part of the fl ip, or of its cavity. But real abfolute reft is the continuance of the body in the fame part of that immoveable fpace in which the fhip itfelf, its cavity, and all that it contains, is moved. Wherefore, if the earth is really at reft, the body which relatively refts in the ftiip will really and ab¬ folutely move with the fame velocity which the flrip has on the earth. But it the earth alfo moves, the true and abfolute motion of the body will arife, partly from the true motion of the earth in immoveable fpace ; partly from the relative motion of the fhip on the earth : and if the body moves alfo relatively in the ftiip, its true motion will arife partly from the true motion of the earth in immoveable fpace, and partly from the relative motions as well of the ftrip on the earth as of the body in the ftiip ; and from thefe •elative motions will arife the relative motion of the body on the earth. As if that part of the earth where the flrip is, was truly moved towards the eaft, with a velocity of 10010 parts ; while the flrip itfclf with a freflr gale is carried towards the weft, with a ve¬ locity exprefled by 10 of thefe parts; but a failor walks in the ftiip towards the eaft with one part of the faid velocity : then the failor will be moved truly and ab¬ folutely in immoveable fpace towards the eaft with a velocity of 1001 parts; and relatively on the earth towards the weft, with a velocity of 9 of thofe parts. Abfolute time, in aftronomy, is diftinguifhed from relative, by the equation or correction of the vulgar time. For the natural days are truly unequal, though they are commonly confidered as equal, and ufed fora meafure of time : aftronomers correct this inequality for their more accurate deducing of the celeftial mo¬ tions. It may be that there is no fuch thing as an ' equable motion whereby time may be accurately mea- fured. All motions may be accelerated or retarded ; but the true or equable progrefs of abfolute time is liable to no change. The duration or perfevcrance of the exiftence of things remains the fame, whether the morons are fwift or flow, or none at all; and there¬ fore ought to be diftinguiftied from what are only fenfible meafures thereof, and out of which we collect it by means of the aftronomical equation. The ne- ceftity of which equation for determining the times of a phenomenon is evinced, as well from the experiments of the pendulum-clock as by eclipfes of the fatellites of Jupiter. 7' As 0 NEW Newtonian Philo fophy 8 Immutabi¬ lity of time 9n &C* I ^ 1 flr * * * * 1 1 i 1 1 1 0, _ r ’ TT rz zz Tg-T TTT ITT(5 ToTTj &C. 1 hus we fee, that though the difference is conti¬ nually diminilhing, and that in a very large proportion, there is no hope of its vanifhmg, or the quantities be¬ coming tqilal. in like manner, let us take the pro¬ portions or ratios of quantities,, and wefhall be equally unfucceisful. Suppofe two quantities of matter, one containing 8 and the other 10 pounds ; thefe quan¬ tities already have to each other the ratio of 8 to 10, or ol 4 to 5 ; but let us add 2 continually to each of them, and though the ratios continually come nearer to that of equality, it is in vain to hope for a perfeCt coincidence. Thus, 8 10 Ratio -i 10 1 2 x 2 16 18 18 20 20 22 22 24> 26, &c. See. &c. »4 S 6 t 8 9 xorxix . - Xf , T T 7 T5- TT TT TT» tj For this and his other lemmas Sir Ifaac makes theanfwaerf. following apology. “ Thefe lemmas are premifed, to avoid the ledioufnefs of deducing perplexed demon- itrations ad abfurdumy according to the method of ancient geometers. For demonffrations are more con¬ tracted by the method of indivilibles : but becaufe the hypothefis of indivilibles feems fomewhat harlh, and therefore that method is reckoned lefs geometrical, I chofe rather to reduce the demonffrations of the following propofitions to the firft and laft fums and ratios of nafeent and evanefeent quantities, that is, to the limits of thofe fums and ratios ; and fo to premife, as Ihort as I could, the demonftrations of thofe limits. For bodies poffeffcd of equal momenta can exert different actions, it being admitted that bodies refill proportional to their maffes, and that .their power of overcoming reiiitance is proportional to their momenta ? It is incumbent on thofe who maintain the doctrine of univeilal re-aCtion, to free it from thefe difficulties and apparent contradiction*. NEW [ liirNewtMuan For hereby the fame thing is performed as by the me- jfkrfhilolophy.^od ot indivifibles ; and now thofe principles being demonftrated, we may ufe them with more fafety. Therefore, if hereafer I fhould happen to conlider quantities as made up of particles, or (hould ufe little curve lines for right ones; I would not be underftood to mean indivifibles, but evanefeent diviiihle quantities; ; net the fu,ms and ratios of determinate parts, but al¬ loc ways the limits of fums and ratios ; and that the force f*11 of fuch d emontlrations always depends on the method 11 laid down in the foregoing lemmas. “ Perhaps it may be obje&ed, that there is no ul¬ timate proportion of evanefeent quantities, becaufe the proportion, before the quantities have vanifhed, is not the ultimate, and, when they are vanifhed, is none. But by the fame argument it may be alleged, that a body arriving at a certain place, and there Hopping, has no ultimate velocity ; becaufe the velocity before the body comes to the place is not its ultimate velo¬ city ; when it is arrived, it has none. But the an- fwer is ealy : for by the ultimate velocity is meant that with which the body is moved, neither before it arrives at its place and the motion ceafes, nor after ; but at the very inflant it arrives ; that is, that velocity with which the body arrives at its laft place, and with which the motion ceafes. And in like manner, by the ultimate ratio of evanefeent quantities is to be underftoood the ratio of the quantities, not before they vanilh, m r afterwards, but with which they Vanifh. In like manner, the firil ratio of nafeent quantities is that with which they begin to be. And the iirlt or laft fum is that with which they begin and ceafe to be (or to be augmented and diminiftied). There is a limit which the velocity at the end of the motion may attain, but not exceed ; and this is the ultimate velo¬ city. And there is the like limit in all quantities and proportions that begin and ceafe to be. And, fmee fuch limits are certain and definite, to determine the fame is a problem ftridly geometrical. But whatever is geometrical yve may be allowed to make ufe of in determining and demonftrating any other thing that is likewife geometrical. “ It may be alfo ohje&ed, that if the ultimate ratios of evanefeent quantities are given, their ulti¬ mate magnitudes will be alfo given ; and fo all quan¬ tities will confift of indivifibles, which is contrary to what Euclid has demonftrated concerning incommen- furables, in the 10th book of his elements. But this objeftion is founded on a falle fuppofition. For thofe ultimate ratios with which quantities vanifh are not truly the ratios of ultimate quantities, but limits towards which the ratios of quantities decrealing con¬ tinually approach.” Lem. II. If inanyfigure AtfcE(Pl.CCCXLV.n° i.) terminated by the right line Aa, AE, and the curve a c E, there be inferibed any number of parallelograms A£, Be, Ce/, See. comprehended under equal bafes AB, BC, CD, &c. and the fides B£, Ce, De/, &c. parallel to one fide Art of the figure ; and the pa¬ rallelograms aYLbly blLcmt c M f matter than others, the motions of the fatellites would be difturbed by that inequality of attra&ion. If, at 3? equal NEW [ 42 1 N E W Newtonian CqUsl diftanccs from the fun, any-fatellite, in propor- FhiU:|oF;h)-,t;otl tQ the qUantjty 0f Jtg matter, did gravitate to* i wards the fun, with a force greater than Jupiter in pro¬ portion to his, according to any given proportion, fuppofe of dtoe-, then the diftance between the centres of the fun and of the fatellite’s orbit would be always greater than the diftance between the centres of the fun and of Jupiter nearly in the fubduplicate of that proportion. And if the fatellite gravitated towards the fun with a force lefs in the proportion of e to d, the diftance of the centre of the fatellite’s orb from the fun would be lefs than the diftance of the centre ot Jupiter’s from the fun in the fubduplicate of the fame proportion. Therefore, if, at equal diftances from the fun, the accelerative gravity of any fatellite towards the fun were greater or lefs than the accelerating gra¬ vity of Jupiter towards the fun but by rdoo Part of the whole gravity ; the diilance of the centre of the fatellite’s orbit from the fun would be greater or lefs than the diftance of Jupiter from the fun by ToVo Part of the whole diftance; that is, by a fifth part of the di- flance of the utmoft fatellite from the centre of Jupiter; an eccentricity of the orbit which would be very fen- frble. But the orbits of the fatellites are concentric to Jupiter ; therefore the accelerative gravities of Jupiter, and of all its fatellites, towards the fun, are equal among themfelves. And by the fame argument, the weight of Saturn and of his fatellites towards the fun, at equal diftances from the fun, are as their feveral quantities of matter; and the weights of the moon and of the earth towards the fun, are either none, or accurately proportional to the maftes of matter which they contain. But further, the weights of all the parts of every planet towards any other planet are one to another as the matter in the feveral parts. For if fome parts gra¬ vitated move, others lefs, than in proportion to the quan¬ tity of their matter; then the whole planet, according to the fort of parts w ith which it moft abounds, would gravitate more or lefs than in proportion to the quantity cf matter in the whole. Nor'is it of any moment whe¬ ther thefe parts are external or internal. For if, as an inftance, we ftiould imagine the terreftrial bodies with us to be raifed up to the orb of the moon, to be there compared with its body ; if the w eights of fuch bodies were to the weights of the external parts of the moon as the quantities of matter in the one and in the other refpe&iveiy, but to the weights of the internal parts in a greater or lefs proportion ; then likewife the weights of thofe bodies would be to the weight of the whole moon in a greater or lefs proportion ; againil what w'e have Ihewed above Cor. 1. Hence the weights of bodies do not de¬ pend upon their forms and textures. For if the weights could be altered with the forms, they would be great¬ er or lefs, according to the variety of forms in equal matter ; altogether agaiiift experience. Cor. 2. Univerfally, all bodies about the earth gra¬ vitate tov. ards the earth ; and the eights of all, at equal diftances from the earth’s centre, are as the quan tities of matter hich they feveraily contain This is the quality of all bodies within the reach of our expe¬ riments; and therefore (by rule 3.) to be affirmed of all bodies whatfoever. If ether., or any other body, were either altogether void of gravity, or were to gra¬ vitate lefs in proportioii to its quantity of mg.tterj then, becaufe (according to Ariftotle, Des Cartes, and Newtonian others) there is «o difference betwixt that and other bodies, but in mere form of matter, by a fucceffive J'j change from form to form, it might be changed at laft: into a body of the fame condition with thofe which gravitate moft in proportion to their quantity of mat¬ ter ; and, on the other hand, the heavieft bodies, ac¬ quiring the firfl form of that body, might by degrees quite lofe their gravity. And therefore the weights would depend upon the forms of bodies, and with thofe forms might be changed, contrary to what was proved in the preceding corollary. Cor. 3. All fpaces are not equally full. For if all fpaces were equally full, then the fpecific gravity of the fluid which fills the region of the air, on account of the extreme denfity of the matter, would fall nothing fnort of the fpecifio gravity of quick-filver or gold, , or any other the moft denfe body ; and therefore, nei¬ ther gold, nor any other body, could defeend in air. For bodies do not defeend in fluids, unlefs they are fptcificaliy heavier than the fluids. And if the quan¬ tity of matter in a given fpace can by any rarefaction be diminifhed, what fhould hinder ^a diminution to in¬ finity ? Cor. 4. If all the folid particles of all bodies are of the fame denfity, nor can be rarefied without pores, a void fpaee or vacuum muft be granted. [(By bodies of the fame denfity, our author means thofe whofe vires inertia are in the proportion of their bulks.] Prop. VI. That there is a power of gravity tend¬ ing to all bodies, proportional to the feveral quantities of matter which they contain. That all the planets mutually gravitate one towards another, we have proved before ; as well as that the force of gravity towards every one of them, confidered apart, is reciprocally as the fquare of the diftance of places from the centre of the planet. And thence it follows, that the gravity tending towards all the pla¬ nets is proportional to the matter which they contain. Moreover, fince all the parts of any planet A gra¬ vitate towards any other planet B, and the gravity of every part is to the gravity of the whole as the matter- of the part to the matter of the whole ; and (by law 3.) to every adlion correfponds an equal re-aftion : there¬ fore the planet B will, on the other hand, gravitate to¬ wards all the parts of the planet A ; and its gravity towards any one part will he to the gravity towards the whole, as the matter of the part to the matter of the whole, B. D- Cor. t. Therefore the force of gravity towards any whole planet, arifes from, and is compounded of, that forces of gravity towards all its parts. Magnetic and electric attractions afford us examples of this. For all attradlion towards the whole arifes from the attractions towards the feveral parts. The thing may be eafily un< derftood in gravity, if we confider a greater planet as formed of a number of lefter planets, meeting together in one globe. For hence it would appear that the force ot the whole muft arife from the forces cf the component parts. If it be o,Jetted, that, according to this law. all bodies with us muft mutually gravitate one towards another, whereas no fueh gravitation any where appears : it is anfwered, that, lince the gravita¬ tion towards thefe bodies is to the gravitation towards the whole earth, as theie bodies are to the whole earth, the gravitation towards them mult be far lefs than to 3 fall • 'jVIan ;i! ii'ofof'hy. N E W fall unJer the obfervation of our fenfcs. [Th •riments with regard to the attraftion of mountains, however, have now further elucidated this point.] Cor. 2. The force of gravity towards the feveral equal particles of any body, is reciprocally as the fquare of the diftanee of places from the particles. Prop. VII. In two fpheres mutually gravitating each towards the other, if the matter, in places on all tides round about and equidilfant from the centres, is limilar ; the weight of either fphere towards the other will be reciprocally as the fquare of the diftance be¬ tween their centres. For the demonllration of this, fee the Principia, book i. prop. 75. and 76. Cok. i. Hence we may find and compare together the weights of bodies towards different planets. For Newton. [ 43 1 N F. W expe* of the fun, but is determined by the parallax of the Newtonian moon, and therefore is here truly defined. The fun Ph‘!°fophy, therefore is a little denfer than Jupiter, and Jupiter than Saturn, and the earth four times denfer than the fun ; for the fun, by its great heat, is kept in a fort of a rarefied ftate. The moon alfo is denfer than the earth. Cor. 4. The fmaller the planets are, they are, ce¬ teris paribus, of fo much the greater denfity. For fo the powers of gravity on their feveral furfaces come neater to equality. Fhey are likewife, c ceteris paribus, of the greater denfity as they are nearer to the fun. So Jupiter is more denfe than Saturn, and the earth than Jupiter. For the planets were to be placed at different difiances from the fun, that, according to their degrees of denfity, they might enjoy a greater or lefs ", .... f , ' , —s.vw ^ ucmiLy, nicy miguc enjoy a greater c the weights of bodies revolving in circles about pla- proportion of the fun’s heat. Our water, if it nets are ns (lie diameters nf tlie rirrles direAli. ~nA , i- n ... nets are as the diameters of the circles diredtly, and the fquares of their periodic times reciprocally ; and their weights at the furfaces of the planets, or at any other diltances from their centres, are (by this prop.) greater or lefs, in the itciprocal duplicate proportion of the dillances. Thus from the periodic times of Ve¬ nus, revolving about the fun, in 2 2qd. i6jh; of the - " ' , . ^ -‘V’ win maKe water non. i\or are we utmoft mrcumjovial fatelhte revolving about Jupiter, in doubt, that the matter of Mercury is adapted to loti. 1 o, Th. ; of the rluYtrenian fa-telhte about Sritm-n 1 1 r b 1 , were removed as far as the orb of Saturn, would be con¬ verted into ice, and in the orb of Mercury would quickly fly away in vapour. For the light of the fun, to which its heat is proportional, is feven times denier in the orb of Mercury than with us: and by the ther¬ mometer Sir Ifaac found, that a fevenfold heat of our fimmer-fun will make water boil. Nor are we to . y its heat, and is therefore more denfe than the matter of 0111 eai Ji; fince, in a denfer matter, the operations of nature require a ftronger heat. It is fiiown in the fcholium of prop. 22. book 2. of the / rincipia, that, at the height of 200 miles above the earth, the air is more rare than it is at the fuperficies of the earth, in the ratio of 30 to 0,0000000000003998, or as 75000000000000 to 1 nearly. And hence the planet Jupiter, revolving in a medium of the fame den¬ fity with that fuperior air, would not lofe by the re- fiftance of the medium the 1 ooooooth part of its mo¬ tion in 1000000 years. In the fpaces near the earth-, the refinance is produced only by the air, exhalations, and vapours. When thefe are carefully exhaufted by the air-pump from under the receiver, heavy bodies fall within the receiver with perfect freedom, and with¬ out the leaft fenfible refinance ; gold itfelf, and the lighten do wn, let fall together, will defeend with equal velocity : and though they fall through a fpace of four, fix, and eight feet, they will come to the bottom at 1 6 ,8?h. ; of the Huygenian fa-tellite about Saturn in 1 jd. 22Jh ; and of the moon about the earth in 2;d. 7h. 43'; compared with the mean difiance of Ve¬ nus from the fun, and with the greatefi heliocentric elongations of the outmofi circumjovial fatellite from Jupiter’s centre, 8 i6" ; of the Huygenian fatellite from the centre of Saturn, 3' 4" ; and of the ffcoon from the earth, icy 33''; by computation our author found, that the weight of equal bodies, at equal difiances from the centres of the fun, of Jupiter, of Saturn, and of the earth, towards the fun, Jupiter, Saturn, and the earth, were one to another as andrc- fpedtively. Then, becaufc as the difiances are increafed or diminifhed, the weights are diminifhed or increafed in a duplicate ratio ; the weights of equal bodies to¬ wards the fun, Jypiter, Saturn, and the earth, at the difiances 10000, 997, 791, and 109, from their cen¬ tres, that is, at their very fuperficies, will be as ioodo, 943> 579> an^ 435 refpedively. Cor. 2. Hence likewife we difeover the quantity of and d e'earth a^; ' ^ fim’JUP‘Jer’ Saturn’ h™S P^fedly void of air and exhalations, the planets tivey ,f th; parallax^if the Tun bf.aS gT~r' th?fC rp— irfs than ,o» jo'", the quantity of matter in the earth menfe fpace of time ‘ ° "Ug l hem f°r IIU' Z pmponr'* r d'min"he‘1 ‘"Ih£ triPlicateof r Nbwtou (Richard) D D. the founder of Hert. Coa. 3. Hence alfo we find the deufities of the gTv) tat a^rfiekranl Tatrr a"'^ ^ enjoyed at Lavendon Grange in Bucks a moderate eftate, which is i ill in the family, though he lived in a houfe of Lord Northampton’s in Yardley-Chace where in 1675 our dodor was born. AH agree that locoo, 997, 791, and 109 ; and the weight^'towards fnedableYthouf ^ fpri!n? uad l0ng been re' the fame, as 10000, 945, 5*9, and 4.35 refpedively ; durfng !he greaf rebelhon111168 ‘ ^ 4CO. rtlX c9otes^taby Tfie rUhj1 °f ,thfiS a;ticle was ed^ted at Weft- ,h,) “"■» ^ P-alli -p oXlt03Af s r. F- 0 2 he equal and fimilar todies towards fimilar fpheres, are, «u the iurtaces ol thofe fpheres, as the diameters of the fpheres. And therefore the denfities of diffimilar fpheres are as thofe weights applied to the diameters of the fpheres. But the true diameters of the fun, Ju¬ piter, Saturn, and the earth, were one to another as new [ 44 ] NEW K^wton. he was admitted into the univerfity we have no certain ' information ; but in the lift of graduates he is thus diiWuifhed: “Newton (Richard,) Chnfbchurch, M. A- April 12th 1701 ; B. D. March 18th 1707 ; Hart-hall, D. D. December 7th 1^0. He was appointed a tutor in Chrift-church as foon as he was o the requifite ftanding in his college, and aifcharged the duties of that important office with honour to him- felf and advantage to the fociety of which he was a member. From Oxford he was called (we know not at what precife period) into Lord Pelham’s family to fuperintend the education of the late duke of New- caftle and his brother Mr Pelham ; and by both thefe illuftrious perfons he was ever remembered with the moft affe£tionate regard. In 1710 he was by ddr Aldrich, the celebrated dean ofChnft-church, indudted principal of Hart-hall, which was then an appendage to Exeter college. From this ftate of dependance Dr Newton wrefted it againft much oppofition, elpe- cially from the learned Dr Conybeare, afterwards dean of Chrift-church and bilhop of Briltol. In no conteft, it has been obferved, w^ere ever tw'o men more equally matched ; and the papers that palled be¬ tween them, like Junius’s letters, deferved to be col- kdted for the energetic beauty of their uyle and the ingenuity of their arguments. Dr Newton, however, proved fuccefsful; and in l74=> obtamed a charter, converting Hart-hall into Hertford college; of which, at a confiderable expence to himfelf, and with great aid from his numerous friends, he was thus the founder and tirft head. . Though this excellent man w-as Mr Pelham s tutor, and, if report be true, had by him been more than once employed to furniffi king's fpeeches, he never re¬ ceived the fmalleft preferment from his pupil when firft minifter: and when that ftatefman was afked, why he did not place in a proper ftation the able and meritorious Dr Newton? his reply was, “ How could I do it? he never alked me.” He was not, however, neplecfted by all the great. Dr Compton, bilhop of London, who had a juft fenfe of his merits, had, at an early period of his life, collated him to the re&ory of Sudbury in the county of Northampton, which he held together with the headlhip of Hart-hall. He refided for fome years on that living, and difeharged all the parts of his office with exemplary care and fidelity. Amongft other particulars he read the prayers of the liturgy in his church at feven o clock in the evening of every week-day (hay-time and harveft excepted), for the benefit of fuch of hisjiarilhioners as could then affemble for public devotion. When he left the place, returning again to Oxford about 17241 he enjoined his curates to obferve the fame pious praftice ; and was fortunate enough^to have three fuc- ceffively w'ho trode in the fteps of their worthy principal. Being always an enemy to pluralities with cure of fouls, he exerted his utmoft endeavours from time to time with Dr Gibfon, Biffiop Compton’s.fuceeffor in the fee of London, for leave to refign his reftory in favour of his curate. To the refignation his lordihip could have no obje&ion ; but being under fome kind of engagement to confer the living on another, Dr Newton retained it himfelf, but bellowed all the emo¬ luments upon works of charity in the pariffi, and cu¬ rates who fo faithfully difeharged their duty. Dr Sherlpck, who fuccceded Biffiop Gibfon, being under no engagement of a like nature, very readily granted Dr Newton’s requeft, by accepting his refignation, and colkiting to the re£lory Mt Saunders, who was the laft of his curates. Upon a vacancy of the public ora¬ tor’s place at Oxford, the head of Hertford college of¬ fered himfelf a candidate ; but as the race is nor al¬ ways to the fvvift nor the battle to the ftrong, Dr Digby Coates carried the point againft him. He was afterwards promoted to a canonry of Chrift-church, but did not long enjoy it; for in April. 1753 death deprived the world of this excellent man in the 78th year of his age. He was allowed to be as polite a fcholar, and as ac« complifhtd a gentleman, as almoft any of the age in which he lived. In clofenefs of argument, and peifpi- cuity of ftyle, he had no fuperior. Never was any private perfon employed in more trufts, nor were trufts ever difeharged with greater integrity. He was a zeal¬ ous friend to religion, the univerfity, the clergy, and the poor; and fuch was his liberality offentiment, that he admitted to his friendfhip every man, whatever might be his religious creed, who was earneftly em¬ ployed in the fame good works with himfclt the promotion of virtue and unaffefted piety. .Of his works we have feen only his cTbeophrciJlusi which was pub- liffied after his death ; and his Pluralities Indefenfible; but he publiffied feveral other things during his life, and left a volume of fermons prepared for the prefs at his death. r t> -n. 1 Newton (Thomas), late lord biffiop of Briftol and dean of St Paul’s, London, was born on the firft of January 1704. His father, John Newton, was a confiderable brandy and cyder merchant, who, by his induftryand integrity, having acquired what he thought a competent fortune, left off trade feveral years before he died. . . f He received the firft part of his education in the free fchool of Litchfield ; a fchool which, the biihop ob- ferves with fome kind of exultation, had at all times fent forth feveral perfons of note and eminence ; from Bifhop Smaldridge and Mr Wollafton, to Dr Johnfon and Mr Garrick. . From Litchfield he was removed to Weftmmiter fchool, in 17171 un^er care -^r Ir if the wind blows it on you, it is fo penetrating, that in a few moments you will be as wet as if you had been under water. Some are of opinion that when birds come flying into this fog or fmoke of the hill, they drop down and perifh in the water ; either becaufe their wings are become wet, or that the noife of the fall aftonifhes them, and th -y knoa not where to go in the darkneis : but others think that feldom or never any bird perifhes there in that manner ; be¬ caufe among the abundance of birds found dead be low the fall, there are no other forts than fuch as live and fwim frequently in the water ; as fwans, geefe, ducks, water-hens, teal, and the like. And very often great flocks of them are feen going to deftruc- tion in this manner: they fwim in the river above the .iul, and fo are earned down lower and lower by the water ; and as water-fowl commonly take great delipht * in being carried with the ft ream, they indulge them- felves in enjoying this pleafure fo long, till the fwift- nefs of the water becomes fo great, that it is no longer poflible for them to rife, but they are driven down the precipice and perifh. They are obferved, when they draw nigh the fall, to endeavour with all their might to take wing and leave the water ; but they cannot. In the months of September and Odober fuch abun¬ dant quantities of dead water-fowl are found every morning below the fall, on the fhore, that thegarrifon of the fort for a long time live chiefly upon them. Belides the fowl they find alfo feveral forts of dead fifh, alio deer, bears, and other animals which have tried to crofs the water above the fall: the larger animals aie generally found broken to pieces. Juft below, a little way from the fall, the water is not ra¬ pid, but goes all in circles, and whirls like a boiling pot ; which however does not hinder the Indians gor¬ ing upon it in fmall canoes a-fifliing ; but a little fur¬ ther, and lower, the other fmaller falls begin. When you are above the fall, and look down, your head be g’.4is to turn ; even fuch as have been here numberlefs tunes, will feldom venture to look down, without at the fime time keeping faft hold of fome tree with one hand. It was formerly thought impoffible for any body hvm, ■; to come at the if land that is in the middle of th. fad : but an accident that happened about co years ago made it appear otherwife.' The hiftory is this: I wo Indians of the Six Nations went out from Niagara fort to hunt upon an ifland that is in the middle of the river, or ftrait, above the great fall, on which there ufed to be abundance of deer. They took fome French brandy with them from the fort, w iich they tailed feveral times as they were going over the carrying-placc; and when they were in their canoe, they took now and then a dram, and fo went alornr- up the ftrait towards the Hand where they pronofed. to hunt; but growing fteepy, they laid themfelvcs down in the canoe, which getting look drove back with the ft ream, farther and farther down, till it came nigh that ifhnd that is in the middle of the fall. Here one of them, awakened by the noife of the fall cries out to the other, tint they were gone : Yet they tried if poffible to five life. This ifland was nigheft, and with much working they got on fhore there. At firft they were glad; but when they had confidered- every thing, they thought themfelves hardly in a bet¬ ter ftate than if they had gone down the fall, fince they had now no other choice, than either to throw themfelves down the fame, or perifh with hunger. But hard neceflity put them on invention. At the lower end of the ifland the rock is perpendicular, and no water is running there. The ifland has plenty of wood; they went to work then, and made a ladder or fhrouds of the bark of the lin 1-tree (which is very tough and ftrong) fo long till they could with it reach the water below ; one end of this bark-ladder they tied fa ft to a great tree that grew at the fide of the rock atxjve the fall, and let the other end down to the watei. So they went down along their new-invented ftairs, and when they came to the bottom in the mid¬ dle of the fall they refted a little ; and as the water next, below the fall is not rapid, as before-mention¬ ed, they threw themfelves out into it, thinking to fwim on fhore. We have faid before, that one part of the full is on one fids of the ifland, the other on the otner tide. Hence it is, that the waters of the two catara&s running againft each other, turn back again ft the rock that is juft under the ifland. There- foie, har.ily had the Indians begun to fwim, before the waves of the eddy threw them down with violence againft the rock from whence they came. They tried it feveral times, but at hft grew weary; and by- being often thrown againft the rock they were much bruifed, and the flcin torn off their bodies in miny places.. So they were obliged to climb up flairs again to the iflanj, not knowing what to do. After fome time they perceived Indians on the fhore, to whom they cned out. Thefe fiw and pitied them, but gave them little hope or help : yet they made ha te down to the fort, and told the commandant where two of their brothers were. He perfuided them to try all poflible means of relieving the two poor Indians; and it was done in the following manner : The water that runs on the eaft fide of this ifland is mallow, tfpeciaUy a little above the ifland towards the eaftern fhore. The commandant caufed poles to be made and pointed with iron ; two Indians took upon them to walk to this iflaryi by the help of thefe poles, to fave the other poor creatures, or perifh themfelves! 1 hey took leave of all their friends, as if they were gciig to death. Each had two fuch poles in his hands,^ to fet to the bottom of the ftream, to keep them fteady ; and m this manner reached the ifland: and having given poles to the two poor negroes there, they - all Niagara. N I A _ t. 48 . ^ iJlagara. 'all returned fafely to the main land. Thefe two Indians him. "w (who in the abovementioned manner were firft brought to this iiland) were nine days on the ifland, and almol ready to ftarve to death. ISiow fince the road to this ifland has been found, the Indians go there often to kill deer, which have tried to crofs the river above the fall, and are driven upon it by the ftream. On the weft fide of this ifland are feme fmall iflands or rocks, of no confequence. The eaft fide of the liver is almoft perpendicular, the weft fide more floping. _ In ‘former times, U part of the rock at the fall which is oh the weft fide of the ifland, hung over in fuch a man¬ ner, that the water which fell perpendicularly from it left a vacancy below, fo that people could go under between the rock and the water; but the prominent part fome years fince broke off and fell down. . 1 he breadth of the fall, as it runs in a femicircle, js rec¬ koned to be about 300 feet. The ifland is in the middle of the fall, and from it the writer on each fide is almoft the fame breadth ; the breadth of the ifland at its lower end is about 100 feet. Below the fall, in the holes of the rocks, are great plenty of Cels, which the Indians and French catch with their hands without any other means. Every day when the fun Ihines, you fee here from ten o’clock in the morning to two in the afternoon, below the fall, and under you, where you ftand at the fide of the fall, a glo¬ rious rainbow, and fometimes two, one within the other. The more vapours, the brighter and clearer is the rainbow. When the wind carries the vapours from that place, the rainbow is gone, but appears again as foon as new vapours come. From the fall to the landing above it, where the canoes from Lake Erie put a flume (or from the fall to the upper end of the carrying-place), is half a mile. Lower the ca¬ noes dare not come, left they ftiotild be obliged to try the fate of the two Indians, and perhaps with lefs fuccefs. They have often found below the fall pieces of human bodies, perhaps drunken Indians, that have unhappily come down to the fall. The French fay, tha*t they have often thrown whole great trees into the water above, to fee them tumble down the fall : they went down with furprifing fwift- iiefs, but could never be feen afterwards ; whence it was thought there was a bottomlefs deep or abyfs juft Under the’fall. The rock of the fall confifts of a grey limeftone. Having mentioned the Six Nations which live on the banks of the Niagara, we {hall here, in addition to what we have faid elfewhere (fee America, n0 17.), fubjoin a few particulars relative to thofe nations, which, as they feem not to be well underftood even in America, are probably ftill lefs known in Europe. The information which we have to give was com¬ municated to the Royal Society of London by Mr Richard M’Caufland furgeon to the 8th regiment of foot, who, writing from the beft authority, informs us, that each nation is divided into three tribes, of which the principal are called the turtle-tribe, the wolf- tribe, and the betir-trile. Each tribe has two, three, or more chiefs, called fachems ; and this diftinftion is always hereditary in the family, but defeends along the female line : for Inftance, if a chief dies, one of his fift-. r's Ions; or one of his own brothers, will be appointed to fucceed N0 242, N I A Among thefe no preference is givert to proJu- Niagara, mity or primogeniture ; but the fachem, during his lifetime, pitches upon one whom he fuppofes to have more abilities than the reft ; and in this choice he frequently, though not always, confults the princi¬ pal men of the tribe. If the fucceffor happens to be a child, the offices of the poll are performed by fome of his friends until he is of fufficient age to ait him- fdf. Each of thefe ports of fachem has a name which is peculiar to it, and which never changes, as it is always adopted by the fucceflbr ; nor does the order of precedency of each of thefe names or titles ever vary. Neverthelefs, any fachem, by abilities and acti¬ vity, may acquire greater power and influence in the nation than thofe who rank before him in point of precedency ; but this is merely temporary, and dies with him. Each tribe has one or two chief warriors ; which dignity is alfo hereditary, and has a peculiar name attached to it. Thefe are the only titles of diftindtion which are fixed and permanent in the nation ; for although any Indian may by fuperior talents, either as a counfel- lor or as a warrior, acquire influence in the nation, yet it is not in his power to tranfmit this to his fa¬ mily. The Indians have alfo their great women as well as their great men, to whofe opinions they pay great deference ; and this diftindlion is alfo hereditary in fa¬ milies. They do not fit in council with the fachems, but have feparate ones of their own.—When war is declared, the fachems and great women generally give up the management of public affairs into the hands of the warriors. It may however fo happen, that a fachem may at the fame time be alfo a chief warrior. Friendfhips feem to have been inftituted with a view towards {Lengthening the union between the fe- veral nations of the confederacy ; and hence friends are called the Jinews of the Six Nations. An Indiart has therefore generally one or more friends in each nrtion. Befides the attachment which fubfifts during the lifetime of the two friends, whenever one of them happens to be killed, it is incumbent on the furvivor to replace hirn, by prefenting to his family either a fcalp, a prifoner, or a belt confifting of fome thoufands of wampum ; and this ceremony is per¬ formed by every friend of the deceafed. Thepurpofe and foundation of war-parties, therefore, is in general to procure a prifoner or fcalp to replace the friend or relation of the Indian who is the head of the party. An Indian who wifttes to replace a friend or relation prefents a belt to his acquaintance} and as many as choofe to follow him accept this belt, and become his party* After this, it is of no con¬ fequence whether he goes on the expedition or re¬ mains at home (as it often happens that he is a child); he is ftill confidered as the head of the party The belt he preiented to his party is returned fixed to the fcalp or prifoner, and paffes along with them to the friends of the perfon he replaces. Hence it happens, that a war-party, returning with more fealps or pri- for.ers than the original intention of the party re¬ quired, will often give one of thefe fupernumerary fealps or prifoners to another war-party whom they 4 meet NIC t 49 1 NIC Nicata rneet going out; upon which this party, having ful- Jicander purpofc of their expedition, will fometimea return without going to war. NICiEA, (anc. geog.), the metropolis of Bithy- nia$ fituated on the lake Afcanius, in a large and fer¬ tile plain ; in compafs 16 ftadia : firft built by Anti- gonus, the fon of Philip, and thence called Antigo- nea ; afterwards completed by Lyfimachus, who call¬ ed \tNicaa, after his confort the daughter of Anti¬ pater. According to Stephanus, it was originally a colony of the Bottiszi, a people of Thrace, and called Ancore; and afterwards called Nicaa. Now Nice in See t^e Lets*. Famous for the firll general coun¬ cil.—A fecond Niccea, (Diodorus Siculus), of Cor- fica.—A third, of the Hither India, (Arrian) ; fi¬ tuated on the weft fide of the Hydafpes, oppofite to Buciphale, on the call fide.—A fourth Nicea, a town of Liguria, at the Maritime Alps, on the call fide of the river Paulon near its mouth, which runs between the Varus and Nicaea, (Mela). A colony of the Maffilians, (Stephanus) ; the laft town of Italy to the weft. Now N'vz.-za or Nice> capital of the county of that name, on the Mediterranean.— A fifth, of Locris, (Strabo) ; a town near Thermo¬ pylae; one of the keys of that pafs. It ftood on the Sinus Maliacus. NICAISE (Claude), a celebrated antiquary in the 17th century, was defcended of a good family at Di¬ jon, where his brother was proftor-general of the chamber of accounts. Being inclined to the church, he became an ecclefiaftic, and was made a canon in the holy chapel at Dijon ; but devoted himfelf wholly to the ftudy and knowledge of antique monuments. Having laid a proper foundation of learning at home, he refigned his canonry, and went to Rome, where he refided many years; and after his return to France, he held a correfpondence with almoft all the learned men in Europe. Perhaps there never was a man of letters who had fo frequent and extenfive a commerce with the learned men of his time as the Abbe Ni- caife. This correfpondence took up a great part of his time, and hindered him from enriching the public with any large works ; but the letters which he wrote himfelf, and thofe which he re¬ ceived from others, would make a fine and curious Commercium Epijlolicum. He publiftied a Latin diflerta- tionDe Nunitno P-.intheo; An Explication of an Antique Monument found at Guienne, in the diocefe of Aach ; and A Difcourfe upon the Form and Figure of the Syrens, which made a great noife. In this trad, following the opinion of Huet bilhop of Avranches, he undertook to prove, that they were in reality birds, and not fifties or fea-monfters. He tranfiated into French, from the Italian, a piece of Bellori, containing a defeription of the pidtures in the Vatican, to which he added, A Dillcrtation upon the Schools of Athens and Parnaflus, two of Raphael’s pictures. He wrote alfo a fmall tradt upon the ancient mufic ; and died while he was labouring to prefent the public with the explanation of that antique infeription, Minerva Ar- paiia, which was found in the village of Vclley, where he died in Odtober 1701, aged 78. N1CANDER of Colophon, a celebrated gram¬ marian, poet, and phyfician, who lived about the 160th Olympiad, 140 years before Chnft, in the remix of Vol. XIII. Parti. * Attalus king of Pergamus, who overcame the Gallo- Nicandra Greeks. He lived many years in Etolia, of which jl country he wrote a hiftory. He wrote alfo many. N‘ce’ , other works, of which only two ate now remaining. The one is intitled Theriaca, deferibing in verfe the accidents attending wounds made by venomous beafts, with the proper remedies ; the oth«r bearing the title of Alexipharmaca, wherein he treats poetically of poifons and their antidotes. This Nicander is not ta be confounded with Nicander of Thyatira. N1CANDRA, in botany: A genus of the mo- nogynia order, belonging to the decandria clafs of plants ; and in the natural method ranking under the 30th order, Contorta. The calyx is mono- phylious and quadripartite x the corolla is monope- talous, tubulated, and parted into 10 lacinia : the fruit is an oval berry, which is grooved longitudinally, and contains many fmall angular feeds. Of this there is only one fpecies, the amaray a native' of Guiana, The leaves and ftalks are bitter, and ufed by the na¬ tives as an emetic and purge. \ NICARAGUA, a large river of South America, in a province of the fame name, whofe weftern extremi¬ ty lies within five miles of the South Sea. It is full of dreadful catara&s, and falls at length into the North Sea. Nicaragua, a maritime province of South Ame¬ rica, in Mexico, bounded on the north by Honduras, on the eaft by the North fea, on the fouth-eaft by Cofta Rica, and on the fouth-weft by the South fea ; being 400 miles in length from eaft to weft, and 120 in breadth from north to fouth. It is ©ne of themoft fruitful and agreeable provinces in Mexico, and is well watered with lakes and rivers. The air is wholefome and temperate ; and the country produces plentv of fugar, cochineal, and fine chocolate. One of the lakes is 200 miles in circumference, has an ifland in the middle, and, as fome fay, has a tide. Leon de Nica¬ ragua is the capital town. NIC ARIA, an ifland of the Archipelago, between Samos and Pine, about jo miles in circumference. A chain of high mountains runs through the middle, co¬ vered with wood, and fupplies the country with fprings. The inhabitants are very poor, and of the Greek communion ; however, they have a little wheat, and a good deal of barley, figs, honey, and wax. NICASTRO, an epifcopal town of Italy, in the kingdom of Naples, and in the Farther Calabria ; 16 miles fouth of Cofenza. E. Long. 15. 59. N. Lat. 39. ry. NICE, an ancient, handfome, and confiderable town on the confines of France and Italy, and capital of a county of the fame name, with a itrong citadel, a bifhop’s fee, and a fenate, which is a kind of a de¬ mocracy. It has been leveral times taken by the French, and laft of all in 1744, but reftored af¬ ter the treaty of Aix-la-Chapelle. It is very agree¬ ably fituated, four miles from the mouth of the river Var. 83 miles S. by W. of Turin, and 83 call of Aix. E. Long. 6. 22. N. Lat. 43. 42. Nice, a county and province in the dominions of the duke of Savoy. The inhabitants fupply Genoa with a great deal of timber for building ftiips; and carry on a great trade in linen-cloth, paper, oil, wine, and honey.—“ Although the county of Nice be on a this Nice. Hiftoricj.1 and PI&U- rcfque de¬ scription of the County ef Nice. NIC [ 5° ] . N 1 S mountains, geographers have always below thejreezing pomt, and that only for two days; this fide of the , 0 „ . confidered it as a province of Italy, fince they have given to this beautiful part of Italy the river Yard for a weflern limit, which is alfo the boundary of the county, and flows into the fea at a league diftance from the capital. This province is partly covered by the maritime Alps; and is bordered on the eafl: by Piedmont, and the ftates of Genoa ; on the fouth by the Mediterranean ; on the weft by the \ ard ; and on the north by Dauphiny. Its length is about 20 leagues of the country, which make about 36 Eng- li(h miles; its breadth is 10 leagues ; audits popu¬ lation is about 120,000 fouls. « The city of Nice is the capital, and the feat of the fenate, the bifhopric, and government. It has become, within thefe few years, a delightful abode, by the number of ftrangers who aflemble there in the winter, either to re-eftablifti their health, or to en¬ joy the mildnefs of the climate, and the beauty of the country, where an unceafing verdure prefects eternal fpring. “ The town is fituated on the iea-lhore^and is back¬ ed by a rock entirely infulated, on which was for¬ merly a caftle, much efteemed for its pofition ; but it was deftroyed in the year 1706 by Marechal Ber¬ wick, the garrifon being too thin to defend the ex¬ tent of the works. There is a diftinftion between the old and the new town ; this laft is regular, the houfes are well built, and the ftreets. are wide. Its pofition is by the fide of the fea, and it is terminated, on one fide,'by a charming terrace, which ferves for a promenade. _ . . <« Any perfon may live peaceably m this province, without fear of being troubled on points of faith, provided he conduft himfelf with decorum. The town has three fuburbs. ift, That of St John, which ' condufts to Cimier, about three leagues north from Nice, See. The promenades this way are very^de- lightful, and may be enjoyed in a carriage. 2d, 1 hat of the Poudriere. 3d, That of the Croix de Marbre, or Marble Crofs. This fuburb is new; and the Eng- lifh almoft all lodge in it, being very near the town. The houfes are commodious, facing on one fide the great road which leads to France, and on the other a fine garden, with a profpeft of the fea. All the houfes are feparate from each other: the company hire them for the feafon, i. e. from Oftober till May. Apartments may be had from 15 to 250 louis. The proprietors commonly furnifli linen, plate, &c. There are alfo in the town very large and commodious houfes; as well as the new road, which is opened from the town to the port, by cutting that part of the rock which inclined toward the fea. The fituation is delightful, and warmeft in winter, being entirely co¬ vered from the north wind, and quite open to the fouth. „ , , “ The company is brilliant at Nice, and the amufements of the carnival are, in proportion to the lize of the town, as lively as in any of the great ones in France. There is always an Italian opera, a con¬ cert, and mafleed ball, alternately ; and the company play rather high. . << yt ;s impoffible to find a happier climate than Nice, both for fummer and winter. Reaumur’s ther¬ mometer, in 1781, never fell more than three degrees while at Geneva it fell ten: and in the courfe of the winter of 1 785 it fell only two degrees ; while at Ge- neva. it fell 15. The month of May is rarely fo fine in France as February at Nice. The fummer is not fohot as might be expefted. The thermometer never rifes more than 24 degrees above temperate in the (hade; and there is always an agreeable fea-breeze from ten in the morning till fun-fet, when the land-breeze comes on. There are three chains of graduated mountains, the laft of which confound their fummits with the Alps ; and to this triple rampart is owing the mild tempera¬ ture fo fenfibly different from the neighbouring parts. ‘s The cultivation of the ground is as rich as can be defired. There are alternately rows of corn and beans, feparated by vines attached to different fruit- trees, the almond and the fig ; fo that the_earth be¬ ing inceffantly cultivated, and covered with trees, olive, orange, cedar, pomegranate, laurel, and myrtle, caufes the conftant appearance of fpring, and forms a fine contrail with the fummits of the Alps, in the . back-ground, covered with fnow.” Nice, an ancient town of Afia, in Natolis, now called Ifnick, with a Greek archbifhop’s fee. It is fa¬ mous for the general council affembled here in 325, which endeavoured to'fupprefs the do&rines of Arius. It was formerly a large, populous, and well-built place, and even now is not inconiiderable. bee Isnic. Nicenr Creed, was compofed and eftabliihed, as a proper fummary of the Chriftian faith, by the coun¬ cil at Nice in 325, againft the Arians.—It is alfo called the Conjlantmopolitan creed, becaufe it was con¬ firmed, with fome few alterations, by the council of Conftantinople in 381. See Cp-eed. NICEPHGRUS (Gregoras), a Greek hiftorian, was born about the clofe of the 13th century, and flouriflied in the 14th, under the emperors Androni- cus, John Palaeologus, and John Cantacuzenus. He was a great favourite of the elder Andromcus, who made him librarian of the church of Conflantinople,.v and fent him ambaffador to the prince of Sei via. He accompanied this emperor in his misfortunes, and af- fifted at his death ; after which he repaired to the court of the younger Andronicus, where he leems to have been well received ; and it is certain that, by Ins influence over the Greeks, that church was prevailed on to refufe entering into any conference with the le¬ gates of pope John XXII. But in the difpute which - arofe between Barlaam and Pulamos, taking the part of the former, he maintained it zealoufly in the coun¬ cil that was held at Conftantinople in 1351, for which he was caft into pnion, and continued there till the re¬ turn of John Palseologus, who releafed him; after which he held a deputation with Palamos, in the pre¬ fence of that emperor. He compiled a hiftory, which in 11 books contains all that palled from 1 204, when Conltantinople was taken by the French, to the aeatn of Andronicus Palteologus the younger, in I34<-— The heft edition of this work is that of the Louvre, in Greek and Latin, in 1702. NiCt.PHOR.us (Califtus), a Greek hiilonan, who flourifhed in the 14th century under the emperor An- dronicus Pa'ceologus the elder, wrote an ecclefialiical hiftory in ?3 books ; i 8 of which are ftill extant, con¬ taining the tranfaftions of the church from the birth of ^ Chuff Nice, Nicepho. rus. '■Jlcejiho NIC Is CKrift to the death of the emperor Phocas in 610. We have nothing elfe but the arguments of the other five books from the commencement of the reign of the emperor Heraclius to the end of that of Leo the philofopher, who died in the year 911. Nicephorus dedicated his hiftory to Andronicus Palaeologus the elder. It was tranfiated into Latin by John Langius* and has gone through feveral editions, the bell of which is that of Paris, in 16^0. Nickphorus (Bltmmidas), a prieft and monk of Mount Athos, flouriihed in the 13th century. He refufed the patriarchate of Conftantinople, being fa¬ vourable to the Latin church, and more inclined to peace than any of the Greeks of his time. In this fpirit he compofed two treatifes concerning The Pro- cejjion of the Holy Ghojl: one addreffed to James patri¬ arch of Bulgaria, and the other to the emperor Theo- dore Lafcaris. In both thefe he refutes thofe who maintain, that one cannot fay the Holy Ghoft pro¬ ceeds from the Father and the Son. Thefe two tra&s are printed in Greek and Latin by Allatius, who has alfo given us a letter written by Blemmidas on his ex¬ pelling from the church of her convent Marchefinos, miftiefs of the emperor John Ducas. There are feve¬ ral other pieces of our author in the Vatican library. NICERON (John Francis), was born at Paris in 1613. Flaving finifhed his academical ftudies, with a fuccefs which railed the greateft hopes of him, he en¬ tered into the order of the Minims, and took the ha¬ bit in 1632 ; whereupon, as is ufual, he changed the name given him at his baptifm for that of Francis, the name of his paternal uncle, who was alfo a Minim, or Francifcan. 1 he inclination and tafte which he had for mathematics appeared early. He began to apply himielf to that fcience in his philofophical ftudies, and devoted thereto all the time he could fpare from his other employments, after he had completed his ftudies in theology. All the branches of the mathematics, however, did not equally engage his attention ; he confined himfelt particularly to optics, and only learn¬ ed of the reft as much as was neceftary for rendering him perfeft in this. There remain ftill, in feveral houfes wherein he dwelt, efpeeially at Paris, fome ex¬ cellent performances, which difeover his fkill in this way, and which make us regret that a longer life did not fuffer him to carry it to that perfection which he defired ; fince one cannot help being furprifed that he pioceeded fo far as he did, in the midft of thofe occupa¬ tions and travels by which he was forced from it, during the Ihort fpace of time which he lived. Fie hath himfelf o.iferved, in the prefacetohis Thaumaturgus Opticus, he went twice to Rome; and that, on his return home, he was appointed teacher of theology. Fie was after¬ wards chofen to accompany father Francis de la None, \icar-general of the order, in his vifitation of the con¬ vents throughout all France. But the eagernefs of nis paflion for ftudy put him upon making the beft of a t ie mon'‘ents he had to fpare for books ; and that I 3 NIC wife ceconomj? furmfhed him with as much as fatisfied Niceron. him. Being taken fick at Aix in Provence, he died ‘‘1 "■-v*-—" there Sept. 22. 1646, aged 33. He was an intimate acquaintance of Des Cartes. A lift of his writings is inferted below (a). s Niceron (John Peter), fo much celebrated on ac¬ count of his Memoirs of Men illujlrious in the Republic of Letters, was born at Paris March 11. 1685. He was of an ancient and noble family, who were in very high repute about 1540. He ftudied with fuccefs in the Mazarine college at Paris, and afterwards at the college Du Pleflis. In a fhort time, refolving to for- fake the world, he confulted one of his uncles, who belonged to the order of Bernabite Jefuits. This uncle examined him ; and, not diffident of his eledion, in¬ troduced him as a probationer to that fociety at Paris. He was received there in 1702, took the habit in ^7®3> an<^ made his vows in 1704, at the age of 19. After he had profefled himfelf, he was fent to Mont¬ arges, to go through a courfe of philofophy and theo¬ logy ; thence he went to Loches in Touraine to teach thofe fciences. He received the prieithood at Poitiers in 1708. As he was not arrived at the age to affiime this order, a difpenlation, which his uncommon piety had merited, was obtained in his favour. The college of Montarges having recalled him, he was their pro- fefibr of rhetoric two years, and of philofophy four. In fpite of all thefe avocations, he was humanely attentive to every call and work of charity, and to the inftrudtion of his fellow-creatures, many of whom heard him deliver out fit rules of conduft for them, not only from the pulpits of moft of the churches within the province, but even from thofe of Paris.—1 In 1716, his fuperiors invited him to that city, that he might have an opportunity of following, with the more convenience, thofe ftudies for which he always had expreffed the greateft inclination. He not only underftood the ancien ou po»r lien entendre & expliquer facilement toutes fortes des trique. Ikis 'is only an efiavtithe foE'’ ^ ^ merveilleux de I'optique, catopriquefA diop- ccs, & dioptrices, tan prima See He . Vin^^ork ; 3. Thaumaturgus opticus ; five, Admiranda optices, cat opri- , vo wptnees, pan pnmat &c. He intended to add two other parts, but was prevented by death! ^ N I G r 52 t N I C N'ceta* the Engllrtt; Pans 1729, 9vo. 4, Th* Natural Kijlory •I of the Earth, tranflited from the Englifh of Mr Wood- Kichok war4? by ivfonft Nogues, doctor in phyfic ; with an an{vver to the objeftions of Dr Carmerarius ; contain¬ ing alio feveral letters written on the fame fubjedt, and a methodical diftribution of foffils, tranflated from the Engliih by Niceron ; Paris 1735, 4t0- 5; Memoirs of Men illujlrious in the Republic of Letters^ witn a critical account of their works-; Paris, i2tno. The fir ft vo¬ lume of this great work appealed in 1727 ; the others were given to the public in fucceffion, as far as the 30th, which appeared in 1738. The 40th volume was publiihed after the death of the author, in 1739. NICETAS (David), a Greek hiftorian, a native, as fome relate, of Paphlagonia, who lived about the end of the gth century. He wrote Rhe Life of ht Igna¬ tius, patriarch of Conftantinople, which was tranflated ‘ into Latin by Frederic Mutius, biihop of Termoli he compofed alfo feveral panegyrics in honour of the apoftles and other-faints, which are inferted in the laft continuation of the Bibliotheca Patrum by Combefis. Nicetas (furnamed Serron), deacon of the church of Conftantinople, cotemporary with Theo- phylaft in the 1 ith century, and afterwards bifttop of Heraclea, wrote a Catena upon the book of Job, com¬ piled from paflages of feveral of the fathers, which was printed at London in folio, 1637. We have al- fo, by the fame writer, feveral catena upon the Pfalms and Canticles, Bafii 1552 ; together with a Commen¬ tary on the poems of Gregory Nazianzen. Nicetas (Arhominates), a Greek, hiftorian of the 13th century, called Coniates, as being born at Chone, or Coloflus, in Phrygia. He was employed in feveral confiderable affairs at the court of Conftanti¬ nople ; and when that city was taken by the blench in 1204, he withdrew, with a young girl taken from the enemy, to Nice in Bithynia, whereTe married his captive, and died in 1206. He wrote a Hiftory, or Annals, from the death of Alexius Comnenus in the year 11x8, to that of Badouin ih 1205 ; of which work we have a Latin tranflation by Jerome Wolfius, .printed at Bafii in 1557 ; and it has been inferted in the body of the Byzantine. Hiftorians, printed in France at the Louvre. NICHE, in archite&ure, a hollow funk into a wall, for the commodious and agreeable placing of a ftatue. The word comes from the Italian nechia, “ fca-fhell in regard the ftatue is here inclofed in a (hell, or per though he publifhed, in Latin and in Englifh, no NleMk fewer than 19 works in defence of Chriftianity, and the do&rines and worfhip of the church of England, he was fo totally overlooked, even by thofe who pro- feffed to be patrons of orthodoxy, that towards the clofe of bis life we find him complaining to Robert earl of Oxford, that he was forced on the drudgery of being editor of Mr Seldon’s books for a little money to buy other books, to enable him to carry on his liturgical labours. He died in the beginning of the year 1712. Of his numerous publications, thofe which are moft generally known arc, A Conference nvith a Theifl, in five parts, and A Comment on the Book of Common Prayer and Adminijlration of the. Sacraments, See- A volume of letters in Latin between him and Joblon* fid, Oftervald, and Wetftein, &c. was prefented, Oc¬ tober 28. 1712, by his widow to the archbilhop of Canterbury ; and they are now preferved among the valuable MSS. at Lambeth, nv 676. NICHOLLS (Dr Frank), was born in London iot the year 1699. His father was a barrifter at law f. and both his parents were of good families in Corn¬ wall. After receiving the firft rudiments of his edu¬ cation at a private fchool in the country, where his docility and fweetnefs of temper endeared him equally to his mafter and his fchool-fellows, Frank was in a few years removed to Weftminfter, and from thence to Oxford, where he was admitted a commoner (or fojournet) of Exeter college, under the tuition of Mr John Haviland, on March 4th 1714. There he ap¬ plied himfelf diligently to all the ufual academical ftudies, but particularly to natural phllofophy and po¬ lite literature, of which the fruits were moft confpi- cuous in his fubfequent le&ures on phyfiology. Af¬ ter reading a few books on anatomy, in order to per- feft himfelf in the nomenclature of the animal parts then adopted, he engaged in diffeftions, and then de¬ voted himfelf to the ftudy of nature, perfectly free and . unbiaffed by the opinions of others. On his being chofen reader of anatomy in that uni- verfity, he employed his utmoft attention to elevate, and illuffrate a fcience which had there been long de- preffed and negle&ed ; and by quitting the beaten track of former ledlurers, and minutely inveftigating the texture of every bowel, the nature and order of every veffel, &c. he gained a high and a juft reputa¬ tion. He did not then refide at Oxford ; but, when he had finifhed his ledtures, ufed to repair to London, haps on account of the ftiell wherewith the tops of the place of his abode, where he had determined to folne of them are adorned NICHOLS (William), fon of John Nichols of Donington, in Bucks, was bora in 1664. At .what fehool he vras educated we have not been informed; but in 1679 became a commoner of Magdalene fettle. He had once an intention of fixing in Corn¬ wall, and for a fhort time praftifed there with great reputation ; but being foon tired of the fatigues at¬ tendant on that profeffion in the country, he returned to London, bringing back with him a great infight, Hall, Oxford, whence he afterwards removed to Wad- acquired by diligent obfervation, into the nature of the ham College, and took the degree of bachelor of arts miliary fever, which was attended with the moft fa- Nov. 27. 1683.—In O&ober 1684, he was admitted prbbationer-fellow of Merton College. At the com- naencement of 1688 he took his mailer’s degree; and and about thejame time being admitted into orders, he became chaplain to Ralph earl of Montague, and was in September 1791 preferred to the redtory of Selfey; near Chichefter, in Suffex. He was admitted B.D. July 2. 1692 ; and ,D. D. Nov. 29. 1695.; Though his time was wholly devoted to piety and ftudy* and lutary effe&s in his fubfequent praftice at London. About this time he refolved to vifit the continent, partly wfith a view of acquiring the knowledge of men, manners, and languages ; but chiefly to acquaint him¬ felf with the opinions of foreign naturalifts on his fa¬ vourite ftudy. At Paris, by converfing freely with the learned, he foon recommended himfelf to their no¬ tice and efteem. Winflow’s was the only good fyftem of phyfiologv at that time known in Franoe* and Mor- 6 ^ gagni’3 NIC [ .#fch(ilT».’ ffapjni’sanc! Santorini’s of Venice in Ttaly, which Dr Ni- '•^-v ^ cholls likewife foon after vifited. On his return to ^ng'" land, he repeated his phyfiological lefturesin London, which were much frequented, not only by fludents from both the univerfities, but alfo by many furgeons, apothecaries, and others boon after, his new and fuccefoful treatment of the miliary fever, then very S3 1 NIC thing like the offer of a penfion, which he rejected with difdain. The caufes, &c. of the uncommon diforder of which the late king died, viz. a rupture of the right ventricle of the heart, our author explained in a letter to. the earl of Macclesfield, prefxdent of the Royal Society, which was published in the Philofophical 1 ranfactions N'ehulls II Nickel. ' , to a.fecond edition of his treatife De Anima Medica> he added a differtation De motu cordis et fanguinis in honiine nato et non nato, inferibed to his learned friend and coadjutor the late Dr Lawrence. prevalent in the fouthern parts of England, .added, vol. 1. much to his reputation. ’ In 172J, at a meeting of In ‘TT2* the Royal Society, he gave his opinion on the nature of aneurifms, in which he dififented from Dr Freind in ^U8A^ the beginning of the year 1728, he waschofen a Tired at length of London, and alfo defirous of fellow of the Royal Society, to which he afterwards fupenntendmg the education of his fon, he removed communicated the defeription of an uncommon difor- to Oxford where he had fpent moft agreeably fome der (publifhed in the Tranfadions), viz. a polypus, years in his youth. Lut when the ftudy of the *a lefembling a branch of the pulmonary vein (for which recalled Mr Nicholls to London, he too* a houfe at Tulpius has ftrangely miflaken it), coughed up by an LPfom, where he palled the remainder of his Me an a afthmatic perfon. He alfo made obfervations (in the literary retirement, not inattentive to natural philofo- fame volume of the Tranfadiona) on a treatife, by M. phy, efpecially the cultivation of gram, and the im- Hdvetius of Paris, on the Lungs. Towards the end provement of barren foils, and contemplating alfo with of the year 1729, he took the degree of dodor of admiration the.internal nature ot plants,,as taught by phyfic at Oxford. At his return to, London, he T underwent an examination by the prefident and cen- fors of the college of phyficians, previous to his being admitted a candidate, which every praditioner muft be a year before he can apply to be chofen a fellow. Dr Nicholls was chofen into the college on June 26* 1732 ; and two years after, being chofen Gulftonian reader of Pathology, he made the llrudure of the, heart, and the circulation of the blood, the fubjed of his ledures. In 1736, at the requeft of the prefident, he again read the Gulftonian ledure ; taking for his fubjed thofe parts of the human body which ferve for the fecretion and difeharge of the urine } and the caufes, fymptoms, and cure, of the difeafes occafioned by the ftone. In 1739, he delivered the anniverfary Harveian oration. Ih 1743, he married Elizabeth, youngeft daughter of the cefebrated Dr Mead, by whom he had five children, two of whom, died young. Two fons and a daughter furvived him! In 1748, Dr Nicholls undertook the office of chirurgical ledurer, beginning with a learned and elegant differtation on the Anima Medica. About this time, on the death of Dr John Cuningham, one of the eleds of the college, Dr Abraham Hall was chofen .to fucceed him, in pre¬ ference to our author, who was his fenior, without any apparent reafon. With a juft refentment, he im¬ mediately refigned the office of chirurgical ledurer, and never afterwards attended the meetings of the fel¬ lows, except when bufinefs of the utmoft importance was in agitation. In 1751, he took £bme revenge in an anonymous pamphlet, intitled “ The Petition of the Unborn Babes to the Cenfors of the Royal College of Phyficians of London;” in which Dr Ncfbit {Pocus')i Dr Maule {Maulm}, Dr Barrowby (Barebone'jy principally, and . Sir William Brown, Sir Edward Hulfe, and tlie Scots incidentally, a\e the objeds of his fatire- In 1753, on the death of Sir Hans Sloane, Bart, in his 94th year, Dr Nicholls was appointed to fuc¬ ceed him as one of the king’s phyficians, and held that office till the death of his royal mafter in 1760, when this moft Ikilful phyfician was fuperfeded with feme- Linnaeus. His conftitution never was rohuft. In his youth, at Oxford, he was with difficulty recovered from a dangerous fever by the Ikill of Dodors Frampton and Frewen ; and afterwards at London he had frequently- been affiided with a catarrh, and an inveterate afth¬ matic cough, which, returning with great violence at, the beginning of the year 1778, deprived the world of this valuable man on January 7th, in the 80th year of his age. Dr Lawrence, formerly prefident of the college of phyficians, who gratefully aferibed all his phyfiologi¬ cal and medical knowledge to his precepts, and who, while he lived, loved him as a brother* and revered him as a parent, two years after printed, and gave to his friends, a few copies of an elegant Latin Life of Dr Nicholls (with his head prefixed, a ftriking like^ nefs, engraved by Hall from a model of Goffet, 1779); from which, through the medium of the Gentle¬ man’s Magazine, the above particulars are chiefly ex- traced. NICIAS, a celebrated painter of Athens, fUmnffi'1 ed about 322 years before the Chriftian era; arid was univerfally extolled for the great variety and noble choice of his fubjedls, the force and relievo of his fi¬ gures, his Ikill in the diftribution of the lights and fliadows, and his dexterity in reprefenting all forts of four-footed animals, beyond any mafter of his time. His moft celebrated piece was that of Tartarus or Hell, . as it is deferibed by Homer, for which king Ptolemy the fon of Lagus offered him bo talents, or 11,250!. which he refufed, and generoufly prefented it to his : own country. He was much efteemed likewife by all-his cotemppraries for his excellent talent in fculp- - ture. NICKEL, in chemiftry and mineralogy, a fub-- ftance claffed among the femimetals, though feveral eminent chemifts are of opinion that it is a compound ; and Mr Beigman, who has made more experiments upon it than any other perfon, conje&ures that it is a modification of iron. It was firft obtained from an ore .called kupfer-nickel, , fometlmes- , . NIC [54 K'dtel. iooietimes grey coloured, but often of a reddifli-yel- ■ "r J 1°^ » though feveral others are now difeovered. “ It had its name (fays Mr Bergman), and probably dill -retains it, from this circumftance, that though it has the appearance of containing copper, not the fmallefl: particle of that metal can be extracted from it, even by fire.” It was firft mentioned by V. Hiema, in 1694, in a book written in the Swedifh language, concerning the difeovery of ores and other mineral Jubilances. It is fuppofed by Henckel to be a fpecies of cobalt, or arfenic alloyed with copper. Cramer claHes it with the arfenical or cupreous ores ; though both they and all other chemifts confefs that they were »never able to extradl one particle of copper from it. Mr Cronftedt, in the years 1751 and 1754, fliow'ed by many accurate experiments that it contained a new femimetal, or at lead that a regulus different from all others was obtainable from its ore. This ore, called hipftr-nickel, or falfe copper, as has already been ob- ferved, is of a coppery lead colour, and almod always covered with a greenilh-grey efflorefcence. “ It is (fays Mr Fourcroy) very common at Freyberg in Sax¬ ony, where it is often mixed with the grey ore of co¬ balt ; but it is diftinguiihed from it by its red colour.” Mr Bergman, however, complains greatly of thtfear- city of this mineral, fo that he could hardly procure a quantity fufficient to make experiments upon. Four¬ croy alfo tells us, that “ Mr Sage, having treated this ore with fal-ammoniac, obtained iron, copper, and cobalt, and thinks that it is compofed of thefe three metallic matters, together with arfenic. It likewife contains a fmall proportion of gold, according to this chemid. It is proper to obferve, that thefe refults do not agree with thofe of Mr Bergman ; he is laid to have operated on the kupfer-nickel of Biber, in Heffe, and of Allemont in Daufffuny. Mr Bergman himfelf, however, informs us, that he undertook his experi¬ ments exprefsly with a view to difeover whether the theory of Mr Sage was jud ; and that he operated modly on fome regulus made by Mr Crondedt, and found in the Suabian collection. “ Cronftedt (fays Mr Fourcroy) affures us, that the metallic matter, called fpeifs by the Germans, Avhich is rollefted in the crucibles ufed in the melting of fmalt, affords nickel. Mr Monnei thinks, that the fpeifs of the manufacture of Gengenback, 14 leagues Jrom Strafburg, is true nickel: and as the ore of co¬ balt made ufe of in that place to make fmalt is very pure, he concludes, that nickel is neceffarily a pro¬ duct of cobalt itfelf. But Mr Beaume has obtained nickel from almoft all the ores of cobalt by means of fulphur ; it therefore feems, that the ore of cobalt, which is wrought at Gengenback, contains nickel not diftinguiffiable by the eye, on account of the intimate union of thefe two metallic matters.” “ lo obtain the regulus of nickel (fays Mr Berg¬ man), the ore muft be firft fubjefted to reading ; du- jing which a quantity of fulphur and avfenic, greater or lefs according to the nature of the ore, is expelled; fo that it fometimes Iqfes above half its weight, but frequently not above c.3. I his ore, though long and completely calcined, does not always acquire the fame colour, but in general becomes greener in proportion as it is more rich. Sometimes (efpecially if fuffered to rhe at reft) its up>per furface is covered with green ve- ] NIC gelations, formewhat of the form of coral, which are Nickel, hard and fonorous. A double or triple quantity of —■ black flux is to be added to the roafted powder, and the mixture well fufed in a forge in an open crucible covered with common fait, in the ufual method. The veffel being broken, a metallic globule is found at the bottom, the weight of which amounts to 0.1, 0.2, or at the moil to 0.5 of the crude ore. The regulus thus obtained, however, is far from being pure; for although the roafting be ever fo violent and long continued, yet a confiderable quantity of fulphur, but efpecially ar¬ fenic, ftill remains concealed, exclufive of cobalt, and a great proportion of iron ; which laft is fo generally prevalent, as to make the regulus magnetic : and this variety of heterogeneous matter is the caufe why the regulus varies much, not only in refpedl toils fradlure, the poliftied furface of which is either fmooth or lamel- lated, but alfo in regard to its white colour, which is more or lefs yellow or red.” He has not been able to determine the properties of nickel when perfedlly pure, as the continual prefence of iron in fome refpedl obfeures them : From the cal¬ culations which he makes, however, Mr Bergman con- eludes, that the fpecific gravity of nickel is not lefs than 9.000 at the leaft. If a fmall portion of gold enter the compofition, the greatnefs of the weight might thence be explained ; but though this metal is almoft always abfent, yet 36 parts of it, 48 of iron, and one of copper, were formed by fufion into a glo¬ bule, the fpecific gravity of which was 8.8571, but was little foluble in nitrous acid ; yet after lying about two hours in the acid, the gold was plainly t® be feen, and with volatile alkali the menftruum yielded nothing but a ferruginous brown precipitate, which in the fire put on the appearance of calcined iron. 1 he folutions of nickel in all the acids are green. The vitriolic fcarcely attacks the regulus unlefs by evaporation to drynefs. The nitrous acid, by the affiltance of heat, aiffolves both the calx and the re¬ gulus ; as does likewife the marine acid, but flowly, and not without the affiftance of heat. Acid of arfe¬ nic unites with the calx into a green faline mafs ; but with the regulus it feparates a faline powder difficult of fnfion. Fluor acid diffolves the calx with difficulty, and forms cryftals of a diluted green colour. Acid of bo¬ rax fcarce diffolves nickel direftly, but takes it up by a double elective attra&ion. Vinegar forms with the calx fpathofe cryftals of an intenfe green colour, which can Icarce be decompofed by acid of tartar. The laccharine acid converts both regulus and calx into a white powder, not eaiily foluble in water. Acid of phofphorus attracts it but little. The acid of ants, by decobtion or long digeftion, attacks the newly precipitated calx ; for the folution is green, and up¬ on evaporation yields cryftals of a deep green colour, hemifpherical, formed of filaments diverging from a centre, and pellucid. They are not foiublc in fpirit of wine, and fcarcely in water, unlefs it he acidulated. Lemon-juice feema not to a£l at all upon nickel. All the acids are deeply tinged by diffolving nickel; and this property belongs to the firft regulus as well as that which is moil highly depurated. Volatile alkali difiolves it, and the folution is of a blue colour: the fixed alkali diffolves it very fparingly, and forms a yellow folution. Nickel NIC [ Nickel becomes the more difficult of fnfion, in pro¬ portion to its purity, fo that at lad it re tires nearly as jrreat a heat for this purpofe as malleable iron. It is eafily melted with other metals, but its great fcr.rcity has prevented this matter from being thoroughly in- veftigated. It may, however, be obferved, that the impure regains cannot be united with filver, which muft be attributed to the cobalt it contains ; for when well freed from that metal, it eafily unites in equal propor¬ tions with filver, and that without any remarkable dimi¬ nution of the whitenefs or du&ility of the latter. 'I his mixture, fufed with borax, tinges it of an hyacinthine colour. Copper unites more flowly with depurated nickel, yielding a red and duftile metallic mafs, which tinges borax of areddifh hyacinthine colour. It pro¬ duces only a brittle mafs with tin ; in which refpeft it differs from cobalt. It could not be amalgamated with mercury by trituration. Nickel, when well depurated, does not eafily part with its phlogifton, or, in the language of the new'nomen- elature, receive an acceffion of Carbonne ; for it only af- fumes a brown colour, and that with great difficulty in the ordinary way of calcination in the affay furnace. By means of nitre, however, it is more completely dephlo- giftica.tcd, and becomes green. The metallic calx, vitrified with borax, produces an hyacinthine tinge ; which yet, if occafioned by a regulus not well depu¬ rated, vaniffies on continuing the fire, a flight blue tinge being produced by the addition of nitre ; but a calx of well depurated regulus of nickel forms a per¬ manent colour. The calx of. nickel communicates alfo an hyacinthine colour to microcofmie fait ; which, by long-continued fufion on charcoal, may indeed be weakened, but can hardly be quite difebarged. On the addition of nitre it changes to a violet, but be¬ comes again hyacinthine on augmenting the quantity of microecdmic fait. If the calx of nickel be added to fatuiation, the fufed glafs affumes a blood-colour; but on being fufed, becomes more and more yellow. Under the articleCHEMisTRY,n° 1316, andinthepre- fent article, we have obferved, that Mr Bergman conjec¬ tures nickel to he only a modification of iron. He exa¬ mines, however, with gieat care,the opinion of other au¬ thors, who fuppofe it to be compofed of arfenic, copper, col alt, and iron.—“With refpett to arfenic (fays he) we may very fafely exclude it from the number ; as experi¬ ments fhow that it may be entirely expelled. It can- net be doubted but that copper is prefent in feme ores of nickel, and therefore may eafily be mixed with the regulus ; but the greater number are entirely with¬ out it. It is true, that nickel is totally foluble in vo¬ latile alkali, and that this folution is of a blue colour ; but if this argument held good, there would be no¬ thing found here but copper ; in which cafe very dif¬ ferent phenomena would take place from thofe which are produced by nickel. The blue colour, produced both by copper and nickel, can no more prove their identity than the yellow colour produced both by gold and iron, when diffolved in aqua regia, can-prove the re.entity of thefe two metals. Nickel and copper agree alfo in this property, that they are both precipitated from acids and from volatile alkali by iron ; but a confiderable difference appears in the manner in which this precipitation is ace on pliihed. When a pelifhed piece of iron is put into a folution of nickel, a yellow pellicle of the latter will by degrees adhere-to it; but 55 1 • NIC this foon difappears on touching, and grows black, un- lefs the acid he well faturated, or- fufficiently diluted with water. A fimilar precipitation is obferved if zinc be made ufe of inftead of iron; but in folution of cop¬ per fo much diluted, that the precipitation on iron may be nearly fimilar to that of nickel, zinc is immediate¬ ly covered with a cruft of the colour of mountain brafs.,, An invincible argument that cobalt is no effentia! ingredient in nickel is, that a folution of the latter in hepar fulphuris is precipitated by the former. In the fame way nickel tinging borax, or the microcofmic fait, in the dry way, is thrown down by the addition of a proper quantity of copper ; but this is not ,the cafe with cobalt. A remarkable difference likewife occurs with all the acids. 1. Cobalt tinges all thefe menitrua of a red colour,yielding cryftals either of a yel¬ low or bluiffi red. But nickel produces folutions and concretions of a fine green : it fometimes happens, in¬ deed, that the red folutions yield greenifh cryftals; but this is to be attributed to nickel in fmall proportion mixed with the cobalt. 2. Cobalt united with the ma¬ rine acid yields fympatbetic ink, but depurated nickel does not. 3. Cobalt, diffolved in volatile alkali, affords a red folution, but nickel diffolved in'the fame alkali is blue. 4. Cobalt does not, like nickel, feparate, on the addition of arfenial acid-, a powder difficult of fo¬ lution. Iron therefore only remains; and indeed, fays Mr Bergman, there are many and weighty reafons, which induce us to think that nickel, cobalt, and man- ganefe, are perhaps to be confidered in no other light than modifications of iron. 1. Unequal portions of phlogifton, united to the fame iron, or, according to the new nomenclature, iron containing different proportions of carbone, changes its qualities in a remarkable manner: for inftance, how verymuchdo the different kinds of iron and fteel differ? It is then to be obferved, that nickel, cobalt, and manganefe, whatever operations they may be fubjeft- ed to, are fo far from being deprived of iron, that, on the contrary, they thereby become more dudtile, mag¬ netic, and refradlory. Again, the various colours which nickel, cobalt, and manganefe exhibit, both by folution and by fire, are alfo exhibited by iron. Co¬ balt and manganefe occafion a red colour in acids, and the latter in glafs ; nickel and manganefe occafion an hyacinthine colour when fufed with borax ; a green is produced in acids by nickel, as alfo by its calx, and by manganefe when long and ftrongly calcined ; and it often leaves behind a ft oria of the fame colour, if the rediftlion be performed with a faline flux. Laftly, Col.alt occafions a blue or rather violet colour in glafs; and the fame is true of manganefe diffolved in fixed, and of nickel in volatile, alkali. Iron exhibits all thefe varieties ; for the acids form with this metal folutions of a green colour as long as it contains a certain quan¬ tity of phlogifton; but in proportion to the diminu¬ tion of this principle, a yellow, red, or brownifh red, colour is produced. It tinges glafs in the fame man¬ ner, green, yellow, black, or red. Expofed to the five - for many hours together with nitre, blue, greenifh blue, or greenifli purple flowers, indeed are tranfmitted through the crucible ; but an efflorefcence of the fame kind is produced by nitre alone, which, by long con¬ tinued fire, penetrates the veffels, and is deeompoiVd by the ccntad of the burning fuel, the alkaline efflo- refeenea. & Nickel. NIC [ 56 1 NIC ’Mickel, refeences beln^ made blue by the manganefe, which is which is called Carnieobar, we have indeed, in the fe* NicoW. .Nicobar. a}w3y8 prefent in the circumjacent afhes ; and thefe cond volunv of the Afiatic Refearches, fome interelt- verge more to a green in proportion as the crocus mar- ing information refpeding both the produce and na- tis is more copious; befides, iron itfelf is often found mix- tural hiftory of the country, and the manners of its edvvith manganefe. Hence therefore it appears, that the inhabitants. The author of the memoir is Mr G. Ha- blue flowers which are expelled from nickel by means of milton, who, in hia account of this ifland, fays, “It nitre are the produce of manganefe, as thefe impart to is low, of a round figure, about 40 miles in circum- glafs nothing of the cobalt colour ; befides, in the mi- ference, and appears at a diftance as if entirely cover- neral kingdom,we find the nephritic ftones, and many ed with trees : however, there are feveral well cleared others of blue, yellow, red, and g^een colours, all pro- and delightful fpots upon it. The foil is a black kind ceeding from iron alone. of clay, and m-arfhy. It produces in great abundance. The ores already mentioned, from which nickel has and with little care, moll of the tropical fruits, fuch been obtained, are as follow : as pine-apples, plantains, papayas, cocoa-nuts, and 1. Mr Rinman afferts, that it has been found native areca-nuts ; alfo excellent yams, and a root called in a mine of cobalt in Hefle. It is very heavy, and of a liver colour or dark red When pulverifed, and roaft ed under a muffle, it forms green excrefcences, and fmokes; but its fmoke has no particular fmcll, nor can any fublimate, either fulphureous or arfenical,becaught. It is foluble in acids, and the folution is green, but a polifhed iron plate difcovers no copper. 2. Aerated nickel is found in form of a calx, and is commonly mixed with the calx of iron ; in which cafe it has the name of nickel-ochre. This is green, and is found in form of flowers on kupfer-nickel. It has been found inJSweden, without any vilible quantity of nickel in its compofition, in clay which contained much filver. 3. Kupfer-nickel is of a reddifh yellow bright colour, as has already been mentioned, and its texture is either uniform, granular, or fcaly. It is bright when bro¬ ken, very heavy, and generally covered with a green- ifh efflorefcence. By calcination it lofes much of its fulphur, and becomes green, forming fungous ramifi¬ cations. Mr Rafpe informed M. Magellan, that nickel was found mineralized with fulphurated iron and cop* per in a mine near Nelftone in Cornwall. The fine grained and fcaly kinds are found in loofe cobalt mines in the province of Helfingeland in Sweden, where they are of a lighter colour than in other countries, and have often been confounded with the liver-coloured marcafite. 4. Nickel mineralized with the acid of vitriol is of a beautiful green colour, and may be extracted from the nickel-ochre, or green efflorefcences of kupfer-nick¬ el already mentioned. To the properties of nickel already mentioned, we may add that of its being conftantly attracted by the magnet, and that not at ail in proportion to the quan¬ tity of iron it contains ; for the more it is purified from this metal, the more magnetical it becomes ; and even acquires what iron does not, viz. the properties of a true loadllone. NICOBAR islands, the name of feveral iflands in Afia, lying at the entrance of the gulph of Ben¬ gal. I he largell of thefe iflands is about 40 miles long and 15 broad, and the inhabitants are faid to be a harmlefs foi t-of people, ready to fupply the fhips that flop there with provifious. rIhe fouth end of the great Nicobar is by Captain Ritchie placed in eaft longi¬ tude 940 23' 30" ; and we colledf from Mr Rannel’s Memoir, that it is within the 12th degree of north la¬ titude. Of thefe iflands very little that can be depended upon is known in Europe. Of the northernmoft, .N° 242. cachu. The only four-footed animals upon the ifland are, hogs, dogs, large rats, and an animal of the li¬ zard kind, but large, called by the natives tolonqui; thefe frequently carry oft fowls and chickens. The only kiad of poultry are hens, and thofe not in great plenty. There are abundance of fnakes of many dif¬ ferent kinds, and the inhabitants frequently die of their bites. The timber upon the ifland is of many forts, in great plenty, and fome of it remarkably large, affording excellent materials for building or re¬ pairing fhips. “ The natives are low in ftaturebut very well made, and furpriiingly adtive and flrong; they are copper- coloured, and their features have a call of the Malay { quite the reverfe of elegant. The women in particu¬ lar are extremely ugly. The men cut their hair fhort, and the women have their heads fhaved quite bare, and wear no covering but a fhort petticoat, made of a fort of rufti or dry grafs, which reaches half way down the thigh. This grafs is not interwoven, but hangs round the perfon fomething like the thatching of a houfe. Such of them as have received prefents of cloth-petticoats from the fhips, commonly tie them round immediately under the arms. The men wear nothing but a narrow ftrip of cloth about the middle, in which they wrap up their privities fo tight that there hardly is any appearance of them. The ears of both fexes are pierced when young; and by fqueezing into the holes large plugs of wood, or hang¬ ing heavy weights of (hells, they contrive to render them wide, and di(agreeable to look at. They are naturally difpofed to be good humoured and gay, and are very fond of fitting at table with Eu¬ ropeans, where they eat every thing that is let be¬ fore them ; and they eat moll enormoufly. They do not care much for wine, but will drink bumpers of arak as long as they can fee. A great part of their time is fpent in feafting and dancing. When a feall is held at any village, every one that choofes goes uninvited, for they are utter flrangers to ceremony. At thofe feafts they eat immenfe quantities of pork, which is their favourite food. Their hogs are re¬ markably fat, being fed upon the cocoa-nut kernel and fea-water ; indeed all their domeftic animals, fowls, dogs, &c. are fed upon the fame. They have like- wnfe plenty of fmall fea-fifh, which they ftrike very dex- teroufly with lances, wading into the fea about knee deep. They are fure of killing a very fmall fifli at 10 or 12 yards diftance. They eat the pork almoft: raw, giving it only a hafty grill over a quick fire. They xoafl a fowl, by running a piece of wood thro* it, nic r 5' Nicr^ar. it, by vny of fplt, and holding it over a brilk (ire ~^"v " until the feathers are burnt off, when it is ready for eating, in their tafte. They never drink water ; only cocoa-nut milk and a liquor called/earn, which oozes from the cocoa-nut tree after cutting oft the young fprouts or flowers. This they fufiti to fei men't before it is ufed, and then it is intoxicating; to which quality they add much by their method of drinking it, by fucking it flowly through a finall flraw. After eating, the young men and women, who are fancifully dreffed with leaves, go to dancing, and the old people furround them fmoking tobacco and drinkingyiwrtf. The dancers, while performing, fing fome of their tunes, which are far from wanting har¬ mony, and to which they keep exaft time. Of mufical inftruments they have only one kind, and that the fur pled. It is a hollow bamboo about feet long and three inches in diameter, along the outfide of which there is ftretched from end to end a fingle firing made of the threads of a fplit cane, and the place under the firing is hollowed a little to prevent it from, touching. This inftrument is played upon in the fame manner as a guitar. It is capable of pro¬ ducing hut few notes ; the performer however makes it fpcak harmonioufly, and generally accompanies it with the voice. <4 Their houfes are generally built upon the beach in villages of 15 or 20 houfes each ; and each houfe contains a family of 20 perfons and upwards. 1 hefe habitations are raifed upon wooden pillars about 10 feet from the ground ; they are round, and, having no windows, are like bee-hives, covered with thatch. The entry is through a trap-door below, where the /nmily mount by a ladder, which is drawn up at night. This manner of building is intended to fecure the houfes from being infefted with fnakes and rats; and for that purpofe the pillars are bound round with a fmooth kind of leaf, which prevents animals from be¬ ing able to mount ; befides which, each pillar has a broad round flat piece of wood near the top of it, the proje&ing of which effedtually prevents the fur¬ ther progrefs of fuch vermin as may have pafled the leaf. The flooring is made with thin ftrips of bam- ifcoos, laid at fuch diftances from one another as to leave free admiffion for light and air ; and the infule is neatly finifhed and decorated with fifhing lances, nets, &c. “ The art of making cloth of any kind is quite un¬ known to the inhabitants of this ifland ; what they have is got from the fhips that come to trade in co¬ coa nuts. “ They purchafe a much larger quantity of cloth than ‘is confumed upon their own ifland. This is intended for the Choury market. Choury is a fmall ifland to the fouthward of theirs, to which a large fleet of their boats fails every year about the month of November, to exchange doth for canoes ; for they cannot make thefe themfelves. This voyage they perform by the help of the fun and ftars, for they know nothing of the compafs. “ In their difpofition there are two remarkable qua¬ lities. One is their entire negleft of compliment and ceremony ; and the other, their averfion to diflionefty. A Carnicobarian travelling to a diftant village, upon bufinefs or amufement, paflea through many towns in YouXIII. Parti. 7 ] NIC his way without fpeaking to any one ; if he is hungry Nicobar, or tired, he goes into the neareft houfe, and helps ^ '* himfelf to what he wants, and fits till he is refted, without taking the fmallelt notice of any of the fa¬ mily unlefs he has bufinefs or news to communicate. Theft or robbery is fo very rare amongft them, that, a man going out of his houfe never takes away his ladder or (huts his door, but leaves it open for any body to enter that pleafes, without the lead appre* henfion of having any thing ftolen from him. “Their intercourfe with firangers is fo frequent, that they have acquired in general the barbarous Portu- guefe fo common over India ; their own language has a found quite different from moft others, their words being pronounced wnh a kind of dop, or eaten m the throat, at every fyllable. “ They have no notion of a Ood, but they believe firmly in the devil, and worfhip him from fear. In every village there is a high pole eretled with long firings of ground-rattans hanging from it, which, it is faid, has the virtue to keep him at a diftance. When they fee any ligns of an approaching dorm, they imagine that the devil intends them a vifit, upon which many fuperfiitious ceremonies are performed. The people of every village march round their own boun¬ daries, and fix up at different diftances fmall (licks fplit at the top, into which fplit they put a piece of cocoa-nut, a wifp of tobacco, and the leaf of a cer¬ tain plant : whether this is meant as a peace offering to the devil, or a fcarecrow to frighten him away, does not appear. “ When a man dies, all his live flock, cloth, hatchets, fifhing-lances, and in fhort every moveable thing he pofleffed, is buried with him, and his death is mourn* ed by the whole village. In one view this is an ex¬ cellent cudom, feeing it prevents all difputes about the property of the deceafed amongd his relations. His wife mud conform to cudom by having a joint cut off from one of her fingers ; and if flic refutes this, (he muft fubmit to have a deep notch cut in one of the pillars of her houfe. “ I was once prefent at the funeral of an old woman. When we went into the houfe which had belonged to the deceafed, we found it full of her female rela¬ tions ; fome of them were employed in wrapping up the corpfe in leaves and cloth, and others tearing to pieces all the cloth which had belonged to her. In another houfe hard by, the men of the village, with a great many others from the neighbouring towns, were fitting drinkingToanS and fmoking tobacco. In the mean time two flout young fellows were btify digging a grave in the fand near the houfe. When the women had done with the corpfe, they fet up a ^ moft hideous howl, upon which the people began to affemble round the grave, and four men went up into the houfe to bring down the body; in doing this they were much interrupted by a young man,.fon to the deceafed, who endeavoured with all his might to prevent them, but finding it in vain, he clung round the body, and was carried to the grave along with it: there, after a violent druggie, he was turned away and condu&ed hack to the houfe. The corpfe being now put into the grave, and the lafhings which hound the legs and arms cut, all the live-dock which had been the property of the deceafed, confiding of H about N I C Niroka-, about half a dozen hogs, and as many fowls, was ^'e'^emu-killed, and flung in above it; a man then approached with a bunch of leaves ftuck upon the end of a pole, which he fwept two or three times gently along the corpfe, and then the grave was filled up. During the ceremony, the women continued to make the moft horrible vocal concert imaginable : the men faid nothing. A few days afterwards, a kind of monu¬ ment was erefted over the grave, with a pole upon it, to which long {trips of cloth of diifercnt colours were hung. “ Polygamy is not known among them ; and their punifhment of adultery is not lefs fevere than eflfe&ual. They cut, from the man’s offending member, a piece of the forelkin proportioned to the frequent com- miflion or enormity of the crime. “ There feems to fubfift among them a perfect equa¬ lity. A few perfons, from their age, have a little more refpetS; paid to them ; but there is no appear¬ ance of authority one over another. Their fociety feems bound rather by mutual obligations continually conferred and received } the fimpleit and belt of ail ties.” It is our wifh to take all opportunities of laying before our readers every authentic fad which can throw light upon the philofophy of the human mind. In this narrative of Mr Hamilton’s refpeding the na¬ tives of Carnicobar, there is however one circumftance at which we flu ruble. It is known to the learned, that the philofophers of Greece and Rome, as well as the magi of Perfia, admitted two felf-exiftent be- ings, a good and an evil (fee Polytheism) ; but we never before read of any people who had no notion of a God, and yet firmly believed in the devil. We could give inftances of men worfhipping the evil prin¬ ciple from fear, and negleding the worfhip of the benevolent principle, from a perfuafion that he would do them all the good in his power without being bribed by facrifices and oblations ; but this is the only inifance of *hich we have ever heard, of a people, under the influence of religion, who had no notion of a God! As good is at leafl as apparent in the world as evil, it Appears to us lo very unnatural to admit an evi/ a?d deny a good principle, that we cannot help thinking that Mr Hamilton, from his ignorance of *.he language of Carnicobar, (which he acknowledges to be different from moff others), has not a perfeft acquaintance with the religious creed of the natives ; and that they believe in a good as well as in an evil principle, though they worfhip only the latter, from a perfuafion, that to adore the former could be of no advantage either to him or to themfelves. NICODEMUS, a difciple of Jefus Chrift, a Tew by nation, and by fed a Pharifee (John iii. i. &c.) 1 he icnpture calls him a ruler of the Jews,, and our baviour gives him the name of a mailer of Ifrael. When our baviour began to manifeft himfelf by his miracles at Jerufalem, at the firft paffover that he ce- lebrateo there after his baptifm, Nicodemus made no doubt but that he was the Meffiah, and came to him by mght, that he might learn of him the way of fal- vation. Jefus told him that no one could fee the kingdom of heaven except he fliould be born again. Nicodemus taking this in the literal fenfe, made an- *wer> JrIow can » roan that is old be born again i Can [ 58 1 N I C he enter a fecond time into his mother's womb ?” To Nitodenim, which Jefus replied, “ If a man be not born of water NlColai:a!1k and ef the fpirit, he cannot enter into the kingdom of 'rmmJ God. That which is born of the fltfh is flefh, and that which is born of the fpirit is fpirit.” Nicodemus afks him, “ How can thefe things be ?” Jefus an- fwered, “ Are you a mafter of Ifrael, and are you ig¬ norant of thefe things ? We tell you what we know, and you receive not our teftimony. If you believe not common things, and which may be called earthly, how will you believe me if I fpeak to you of heavenly things ? Nobody has afeended into heaven but the fon of God, who came down from thence. And juft as Mofes lifted up the brazen ferpent in the wilder- nefs, fo muft the Son of Man be lifted up on high. For God fo loved the world that he has given his only fon, fo that no man who believes in him fhall perifh, but fhall have eternal life.” After this converfation Nicodemus became a dif¬ ciple or Jefus Chrift; and there is no doubt to be made, but he came to hear him as often as our Saviour came to Jerufalem. It happened on a time, that the priefts and Pharifees had fent officers to feize Jefus (John vii. 45, &c.), who returning to them, made their report, that never man fpoke as he did ; to which tire Phari¬ fees replied, “ Are you alfo of his difciples ? Is there any one of the elders or Pharifees that have believed in him ?” Then Nicodemus thought himfelf obliged to make anfwer, faying, ‘c Does the law permit us to condemn any one before he is heard ?” To which they replied, “ Are you alfo a Gallilean ? Read the ic riptures, and you will find that never any prophet came out of Gallilee.” After this the council was dif- miffed. At laft Nicodemus declared himfelf openly a> difciple of Jefus Chrift (id. xix. 39* 40.), when he came with Jofeph of Arimathea to pay the laft duties to the body of Chrift, which they took down from the crofs, embalmed, and laid in a fepulchre. We are told, that Nicodemus received baptifm from the difciples of Chrift; but it is not mentioned whe¬ ther before or after the paffion of our Lord. It is added, that the Jews being informed of this, depofed him from his dignity of fenator, excommunicated him, and drove him from Jerufalem ; but that Gamaliel, who was his coufin-german, took him to his country houfe, and maintained him there till hiVdeath, when he had him buried honourably near St Stephen. There is ftill extant an apocryphal gofpel under the name of Nicodemus, which in fome manuferipts bears the title of the si8s of Pilate^ NICOLAITANS, in church-hiftory, Chriftian heretics who affumed this name from Nicholas of Antioch ; who, being a Gentile by birth, firft emi braced Judaifm and then Chriftianity ; when his zeal and devotion recommended’ him to the church of Je¬ rufalem, by whom he was chofen one of the firft dea¬ cons. Many of the primitive writers believe that Ni¬ cholas was rather the occafion than the author of the infamous pra&ices of thofe who affumed his name, who were exprtfsly condemned by the Spirit of God- And indeed their opinions and actions were highly extravagant and criminal. They allowed a community of wives, and made no diftiirc- tion between ordinary me ats and thofe offered to idols. According to Lufebius, they fubfifled but a fhort time 1 NIG [ 59 1 NIG NicoUs time j tut TertulUan fays, that they only changed il their name, and that their hercfies pafled into the fe£t .comedgs. Ca;n[tes. NICOLAS (St), an ifland of the Atlantic Ocean, and one of the moil coniiderable of thofe of Cape Verde, lying between Santa Lucia and St Jago It is of a triangular figure, and about 75 miles in length. The land is ilony, mountainous, and bar¬ ren ; but there are a great many goats in a valley inhabited by the Portuguefe. W. Long. 33. 35. N. Lat. 17.0. NICOLE (Peter), one of the fineft writers in Europe, was born at Chartres in 1625, of a confpi- cuous family. He adhered to the Janfenifts ; and joined in the compofition of feveral works with Mr Arnauld, whofe faithful companion he was during the to or f 2 years of his retirement. He gave a Latin tranflation of Pafcal’s Provinciates) and added a com¬ mentary to them. One of his fineft works is his Effais de Morale. He wrote very iubtilely againft the Pro- teftants. His treatife on the unity of the church is efteemed a maftcrly piece. He died at Paris in 1695, a few days after the publication of his treatife concerning the Quietifts. He was well /killed in polite literature. To him is afcribed a colle&ion of Latin epigrams, and of Greek, Spaniih, and Italian fentences, which has borne feveral impreffions, and has a learned preface to it. NICOLO (St), the moft confiderable, ilrongeft, and beft peopled of the ifles of Tremeti in the gulf of Venice, to the eaft of St Domino, and to the fouth of Caoparata It has a harbour defended by feveral towers ; and a fortrefs, in which is an abbey, with a veryhandfome church. E.Long. 15. 37. N. Lat.42 7. NICOMEDES, the name of ieveral kings of the ancient Bithynia. See Bithynia. 4 Nicomedes I. had no fooner taken pofiefiion of his father’s throne, before Chrift 27c, than, according to the cuftom which has in all ages been too prevalent among the defpocs of the eaft, he caufed two of his brothers to be put to death. The youngeft, Ziboeas, having faved himfelf by timely flight, feized on the coaft of Bithynia, which was then known by the names of Tbracia, Thyniccia, and Thracia Afiatica> and there maintained a long war with his brother. Nicomedes being informed that Antiochus Soter, king of Syria, was making great preparations to attack him at the fame time, called in the Gauls to his afiillance ; and on this occafion that people firit paffed into Alia.— Nicomedes having with their afiiftance repuifed Anti¬ ochus, overcome his brother, and acquired the poflef- fion of all his father’s dominions, bellowed upon them that part of Alia Minor which from them was called Gallo-C rtfcia, and Gallatia. Having now no enemies to contend with, he applied himfelf to the enlarging and adorning of the city of Aftacus, which he called after his own name Nuomed/a. He had two wives, and by one oi them he was perfuaded to leave his kingdom to her fon, in preference to his elder bro¬ thers; but when or how he died is not certainly known. _ Nicomedes II. the grandfon of the former, began his reign like him, by facrificing his brothers to his jealoufy, after having waded to the throne in the blood of Prufias his father. He afTumed the name of Epl- Nkoms'cs, pbanes, or “ the Illuftrious,” though he performed no- Nicomtdia. thing worthy of this title, or even of notice, during -Y""*** the whole time of his long reign. He was fucceeded by his fon. Nicomeses III. furnamed by Antiphrafis, Philopa-- ter, becaufe he had murdered his father to get poflef- fion of his crown. This monarch having entered into alliance with Mithridates the Great king of Pontus, invaded Paphlagonia ; and having feized on that coun¬ try, he attempted likewife to make himfelf mailer of Cappadocia. This country, however, was at that time fubjedl to his powerful ally ; who thereupon marching into Bithynia at the head of an army, drove Nico¬ medes from the throne, and raifed his brother Socrates to it in his room. The dethroned prince had recourfc to the Romans, who expelled the ufurper, and refto- red him to his hereditary dominions. For this favour they preffed him, and at length prevailed upon him, contrary to his own inclination, and the opinion of his friends, to make inroads into the territories of Mithri¬ dates, with whom Rome wanted a fubjeft of difpute. The king of Pontus bore for fome time the devafta* tions committed by Nicomedes with great patience, that he might not feem to be the aggreflbr; but at laft he routed his army on the banks of the Am- nius, drove him a fecond time from his dominions, and obliged him to feek for flielter in Paphlagonia, where he led a private life till the time of Sylla, who replaced him on the throne. He was fucceeded by his fon. Nicomedes IV. who performed nothing which the many writers who flourifhed in his time have thought worth tranfmitting to poilerity. As he died without iifue male, he left his kingdom by his laft will to the Romans, who reduced it to the form of a province. Salluft. difagreeing with the ancients, tells us, that Nicomedes left a fon named Mufa or My fa ; and introduces Mithridates as complaining of the Romans to At faces king of Parthia, for feizing on the kingdom of Bithynia, and excluding the fon of a prince who had on all occaiions fhown himfelf a fteady friend to their republic. But this Mufa was the daughter and not the fon of Nicornedes, as we are told in exprefs terms by Suetonius, Velleius Patercu¬ lus, and Appian. All we know of her is, that upon the death of her father ihe claimed the kingdom of Bithynia for her fon, as the next male heir to the crown ; but without fuccefs, no motives of juftice be¬ ing of fuch weight with the ambitious Romans as to make them part with a kingdom. NICOMEDIA (anc. geog.), metropolis of Bi¬ thynia, built by Nicomedes the grandfather of Piu- fias. Situated on a point of the Sinus Aftacenus, (Pliny).; furnamed the Beautiful, (Athemeus) : the largeft city of Bithynia, (Paufonias), who fays it was formerly called AJlacus ; though Pliny diftinguifhes Aft acum and Nicomedia as difierent cities. Nicome- dia was very famous, not only under its own kings, but under the Romans : it was the royal refidence of Dio- clefian, and of Conftantine while Conilantinople was building, if we may credit Nicephorus. It is ftiil called Nicomedia, at the bottom of a bay of the Propontis in .the Hither Afia. E. Long. 30. o. N. Lat. 41. 20, Ji ^ it N I C . [ 60 1 NIC trade in filk, the difchurge of the office of patriarch, to which dig-^ nity he was appointed in 1652, in the 39th year of his age. N-or was he only diftinguifhed in his own profeffion, for he (hone even as a ftatefman. At length, however, he fellavidtim to popular difcontents; which misfortune, Hicomedui, It is a place of confequence ; carries on Nicer. Cotton,glafs; and earthen-ware, and is the fee of a Greek NICOMEDUS, a geometrician, famous on ac¬ count of the invention of the curve called conchoid, which is equally ufeful in refolving the two problems . . . . . of doubling the cube and trifefting the angle. It though he was far from adervmg it, was certainly the he lived foon after Eratofhenes, for he Nicott 11 Ntcotiana. appears that , raliied that philofpher on the mechanifm ot his mefo- labe. Geminus, who lived in the fecond century before Jefus Chriil, has written on the conchoid, though Nicomedus was always efteemed the inventor of it. Thofe who place him four or five centuries af¬ ter Jefus Chriil mutt be ignorant of thefe fails, by which we are enabled to afeertain pretty nearly the time in which he lived. NICON, a native of Ruffia, was born in 1613, in a village of the government of Niffinei Novogotod, of fuch obfeure parents, that their names and llation are not tranfmitted to pofterity. hie received at the bap- tifmal font the name of Nikita, which afterwards, when he became monk, he changed to Nicon, the appella¬ tion by which he is more generally known. He was educated in the convent of St Macarius, under the care of a monk. From the courfe of his iludies, which were almoft folely dire&ed to the Holy Scrip¬ tures, and the exhortations of his preceptor, he im¬ bibed at a very early period the ilrongeft attachment to a rnonafiic life ; and was only prevented from fol¬ lowing the bent of his mind by the perfuafions and authority of his father. In conformity, however, to the wiflres of his family, though contrary to his own inclination, he entered into matrimony ; and, as that {late precluded him from being admitted into a con¬ vent, he was ordained a fecular prieft. With his wife he continued 10 years, partly in the country and partly at Mofcow, officiating as a parifh-priell. The lofs of three children, however, gave him a total dif- guft to the world ; in confequence of which, his wife Avas perfuaded to take the veil, and he became a monk; his re'treat was in an ifiand of the White Sea, and a Find of ccclefiaftical efiablifhment was formed, as re¬ markable for the aufterities of its rules as the iituation was for its folitude. There were about 1 2 monks, but they all lived in different cells. Such a fyftem, com¬ bined with the molt gloomy ideas, occationed fo much cloiftered pride as tarnifhed his chara&er, when he was afterwards called up to fulfil the duties of a pub¬ lic and exalted ftation. Our limits do not permit us to be minute in our account of his life; we muft therefore be contented with barely reciting general fails. Within lefs than the fpace of five years, Nicon was fucceffively created archimandrite, or abbot of the Novofpatfkoi convent, archbifhop of Novogorod, and patriarch of Ruffia. That he was worthy of thefe rapid promo¬ tions, few will doubt who are acquainted with his chara&er ; for he was poffeffed of very extraordinary qualities,fuch as even his enemies allow and admire. His courage was undaunted, his morals irreproachable, his charity extenfive and exalted, his learning deep and comprehenfive, and his eloquence commanding.— Wiien archbifhop, he obtained the refpeft of the in¬ habitants by his unwearied affiduity in the difeharge of his trull; and conciliated their alfedlions by ads of unbounded charity : Nor was he lefs confpicuous in effeci of imprudence. He abdicated the office ol pa¬ triarch, which would otherwii'e have been taken from him, in July 1658, and bore his i-everfe of fortune with htroic magnanimity : he returned to a cel!, and commenced his former aufterities. His innocence, however, could not prated him from further malicehis enemies obtained him to be formally depofed in 1 666. This degradation was followed by imprifonment, which was for fome time very rigorous, becaufe he, con- feious of his own innocence, relufed to accept pardon for crimes of which he was not guilty. In 1676, however, he vyas removed to the convent of St Cyril, and enjoyed perfed liberty. Nicon furvived his depofition 15 years. In 1681, he requefted and obtained permiffion to return to the convent of Jerufalem, that he might end his days in that favourite fpot ; but he expired upon the road near Yarollaf, in the 66th year of his age. His re¬ mains were, tranfported to that convent, and buried with all the ceremonies ufed at the interment of pa¬ triarchs. NICOPOLI, a town of Turkey in Europe, and in Bulgaria, famous for being the place where the firil batde was fought between the Turks and Chriftians in 1396; and where the latter were defeated with the lofs of 20,000 men. E. Long. 25. 33. N. I^at. 43- 46. . NICOSIA, the capital of the ifland of Cyprus, where a Turkifh bafhaw refidcs. It is delightfully fituated between the mountains of Olympus and a chain of others; and was formerly well fortified by the Venetians ; but the works are now in ruins. It is about 31 miles in circumference ; and there are plan¬ tations of olives, almonds, lemons, oranges, mulber¬ ries, and cyprefs-trees, interfperfed among the houfes, which give the town a delightful appearance. The church of Sanfta Sophia is an old Gothic ftrufture, which the Turks have turned into a mofque, and de- ftroyed the ornaments. It is too miles weft of Tri¬ poli, and 160 fouth-weft of Aleppo. E. Long. 34* 45. N. Eat. 34. 54. NICOT ( John), lord of Villemain, and mafter of requelts of the French king’s houfehold, was born at Nifmes, and was fent ambafl'ador to Portugal in 1559 ; whence he brought the plant which, from his name, was called but is now more generally known by the name of Tobacco. He died atParis in 1603. Fie wrote a French and Latin di&ionary in folio; a treatife on na¬ vigation ; and other works. NICO FIANA,tobacco,in botany: Agenusof the monogynia order, belonging to the pentandria clafs of plants; and in the natural method ranking under the 28th order, Lurida. The corolla is funnel-lhaped, with a plaited limb ; the ftamina inclined; the capfule bivalved and bilocular. There are feven fpecies, of which the moft remarkable is the tabacwv, or common tobacco-plant. This was firft difeovered in America by the Spaniards about the year 1560, and 7 by NIC [ by them imported into Europe. It had linen ufed hy the inhabitants of America long before; and was called by thofe of the iflands _yo/i, and p NIL [ 7 'k* go, the one half north and the other half fouth ; but '' as the ground from north declines all fouthward, it follows, that the rivers which run to the fouthward mud be equal to thofe that run northward, plus the rain that falls in the 5° north latitude, where the ground begins to dope to the fouthward * and there can be little doubt that this is at lead one of the reafons why there are in the fouthern continent fo many rivers larger than the Nile, that run both into fhe Indian and Atlantic Oceans.” From this account given to Herodotus, it has been fuppofed, by fome writers on geography» that the Nile divides itfelf into two branches, one of which runs northward into Egypt, and one through the country of the negroes wedward into the Atlantic ocean. This opinion was fird broached by Pliny. It has been adopted by the Nubian geographer, who urges in fupport of it, that if the Nile carried down ail the rains which fall into it from Abyffinia, the people of Egypt would not be fafe in their houfes. But to this Mr Bruce anfwers, that the wade of wa¬ ter in the burning defarts through which the Nile pafles is fo great, that uhlefs it was fupplied by ano¬ ther dream, the White river, equal in magnitude to itfelf, and which, rifing in a country of perpetual rains, is thus always kept full, it never could reach Egypt at all, but would be lod in the fands, as is the cafe wdth many other very confiderable rivers in Afri¬ ca. “ The rains (fays he) are colle&ed by the four great^rivers in AbylTinia ; the Mareb, the Bowiha, the I acazze, and the Nile. All thefe principal, and their tributary dreams, would, however, be abforbed, nor be able to pafs the burning defarts, or find their way into Egypt, were it not for the White river, which having its fource in a country of almod per¬ petual rains, joins to it a never-failing dream equal to the Nile itfelf.” We diall conclude this article with fome account of the Agows who inhabit the country about the fources of the Nile. Thefe, according to Mr Bruce, are one of the mod confiderable nations in Abyffinia, and can bring into the field about 4000 horfe and a great number of foot ; but were once much more powerful than they are now, having been greatly re¬ duced by the invafions of the Oalla. Their province is nowhere more than 60 miles in length, or than 30 in breadth ; nothwithdanding which they fupply the capital and all the neighbouring country with cattle, honey, butter, wax, hides, and a number of other necefiary articles ; whence it has been cudomary for the Abyffinian princes to exadt a tribute rather than military fervice from them. The butter is kept from putrefaction during the long carriage, by mixing it with a fmall quantity of a root fomewhat like a car¬ rot, which they call mormoco. It is ef a yellow co¬ lour, and anfwers the purpofe perfectly well; which in that climate it is very doubtful if fait could do. The latter is befides ufed as money ; being circulated indead of diver coin, and ufed as change for gold. Brides paint their feet, hands, and nails, with this root. A large quantity of the feed of the plant was btought into Europe by Mr Bruce. The Agows carry on a confiderable trade with the ohangalla and other black favages in the neighbour- hood; exchanging the produce of their country for S 1 NIL gold, ivory, horns of the rhinoceros, and fome fine Nile cotton. The barbarity and thieviffi difpofition of^'Wer. both nationsj however, render this trade much infe- rior to what it might be. In their religion the Agows are grofs idolaters paying divine honours to the Nile, as has already been obferved. Mr Bruce, who lodged in the houfe of the pried of the river, had an opportunity of be¬ coming acquainted with many particulars of their de- votion. He heard him addrefs a prayer to the Nile, in which he dyled it the 44 Mod High God, the Sa¬ viour of the world.” in this prayer he petitioned for feafonable rain, plenty of grafs, and the prefer- vation of a kind of ferpents; deprecating thunder alfo very pathetically. The mod fublime and lofty titles are given by them to the fpirit which they fuppofc to reiide in the river Nile; calling it everlading God, Light of the world, Eye of the World, God of Peace, their Saviour, and Father of the Univerfe. The Agows are all clothed in hides, which they manufa&ure in a manner peculiar to themfelves. Thefe hides are made in the foim of a Ihirt reaching down to their feet, and tied about the middle with a kind of faffi or girdle. The lower part of it refembles a large double petticoat ; one fold of which they turn back over their (boulders, fattening it with a broach or fkewer acrofs their breatt before, and the married women carry their children in ic behind. The younger fort generally go naked. The women are marriageable at nine years of age, though they commonly do not marry till eleven ; and they continue to bear children till 30, and fometimes longer. They are generally thin, and below the middle fize, as well as the men. Barrennefs is quite, unknown among them. The country of the Agows has a very elevated fituation, and is of courfe fo temperate that the heat may eafily be borne, though little more than io° from the equator. The people, however, are but fliort- lived ; which may in part be owing to the oppreffion they labour under. I ms, accoruing to Mir Bruce, is exceffive. “ Though their country (fays he) abounds with all the neceflaries of life, their taxes, tributes, and fervices, efpecially at prefent, are fo multiplied upon them, whiltt their dittreffes of late have been fo great and frequent, that they are only the manufafturers of the commodities they fell, to fatisfy thefe conftant exorbitant demands, and can¬ not enjoy any part of their own produce themfelves, but live in penury and mifery fcarce to be conceived. We law a number of women wrinkled and fun-burnt fo as xcarce to appear human, wandering about under a burning fun, with one and fometimes two children upon their backs; gathering the feeds of bent grafs to make a kind of bread.” MLOlviE 1 ER, or Niloscope, an inftrument ufed among the ancients to meafure the height of the water of the river Nile in its overflowings. Ihe word comes from Niie (an(j ,4^ from y(a “newmud,”or,asfbme others will have it, from ‘‘ I flow,” and «a.k, “ mud”,) and ^rp0», « mea. fure.” I he Greeks more ordinarily call it NnAotrxo- 1 he nilometer is faid, by feveral Arabian writers, to have been firft fet up, for this purpoft, by Jofeph during his regency in Egypt; the meaiure of it was NIL C 79 1 N I M , he;„„ the height of the increafe chief is the principal ufe of the n.lometer, though 16 cubits, this being tne^ g ^ r .ir ^ Xurkifh goverment makes it an engine of taxa¬ tion. From time immemorial the Egyptians paid, as tribute to the king, a certain proportion of the fruit of the ground ; and this was anciently afcertained by pNdcmeter. was^iu ^neCefl\iry to the fxuitfulnefs + Scripture From the meafure of this column, Dr Cumb^rJand t -weights and deduces an argument, in order to prove that t ic Jewi nscufurcs, p. 18. Nimbus il Nimrod.1 * 'Bruce's ‘Travels, vol. 3. and Egyptian cubit were of the fame length. In the French king’s library is an Arabic treatife on nilometers, intitled Neitji alnal al Nil;, wherein are defcribed all the overflowings of the Nile, from the firft year of the Hegira to the 875th. Herodotus mentions a column ere&ed in a point of the ifland Delta, to ferve as a nilorneter; and there is {fill one of the fame kind in a mofque of the lame P As all the riches of Egypt arife from the inunda¬ tions of the Nile, the Inhabitants^ ufed to fupplicate them at the hands of their Serapis ; and committed the moft execrable crimes, as aftions, torfooth, of re¬ ligion, to obtain the favour. T. his occalioned Con flantine exprefsly to prohibit thefe facnfices, &c. and to order the nilometer to be removed into the church; whereas, till that time, it had been in the temple of Serapis. Julian the apoflatc had it icplaced 111 the temple, where it continued till the tune of the great Theodofius. The only rational and confident account, however, which we have of the nilometer is given by the cele¬ brated traveller Mr Bruce. “ On the point * of the ifland Rhode, between Geeza and Cairo, near the middle of the river, is a round tower inclofing a neat well or ciftern lined with marble. The bottom of this well is on the fame level with the bottom of the Nile, which has free accefs to it through a large opening like an embrafure. In the middle of the well rifes a thin column of eight faces of blue and white marble; of which the foot is on the fame plane with the bottom of the river. This pillar is divided into 20 pecks, of 22 inches each. Of thefe pecks the two lowermoft are left, without any divifion, to hand for the quan¬ tity of fludge which the water depofits there. Two pecks are then divided, on the right-hand, into 24 digits each ; then on the left, four pecks are divided into 24 digits ; then on the right, four ; and on the left another four: again, four on the right, which com¬ pletes the number of 18 pecks from the firft divifion marked on the pillar, each peck being 22 inches. Thus the whole marked and unmarked amounts to fome- thing more than 36 feet Englifh. On the night of St John, when, by the falling of the dew, they perceive the rain-water from Ethiopia mixed with the Nile at Cairo, they begin to announce the elevation of the river, having then five pecks of water marked on the nilometer, and twp unmarked for the fiudge, of which they take no notice. Their firft proclamation, fuppofing the Nile to have rifen 12 digits, is 12 from 6, or it wants 12 digits to be fix pecks When it has rifen three more, it is nine from fix; and fo on, till the whole 18 be filled, when all the land of Egypt is fit for cultivation. Several canals are then opened, which convey the water into the defart, and hinder any further ftagnation on the fields. There is indeed a great deal of more water to come from Ethiopia ; but were the innundation fuffered to go on, it would not drain foon enough to fit the land for tillage ; and to guard againft this mif- 4 : the elevation of the water on the nilometer, and by the menfuration of the land actually overflowed. But the. Saracen goverment, and afterwards the Turkifh, has taxed the people by the elevation alone of the wa¬ ter, without attending to its courfe over the country, or the extent of the land aftually overflowed ; and this tax is fometimes cruelly oppreflive. NIMBUS, in antiquity, a circle obferved on cer¬ tain medals, or round the heads of fome emperors ; anfwering to the circles of light drawn round the images of faints. NIMEGUEN, a large, handfome, and ftrong town of the Netherlands, and capital of Dutch Guelder- land, with a citadel, an ancient palace, and feveral forts. It is noted for the peace concluded there in 1679. It has a magnificent town-houfe, and the in¬ habitants are greatly given to trade. It is feated on the Vahal or Wahal, between the RFine and the Maefe. It is the utmoll eaftern boundary of the Ne¬ therlands. It contains two Dutch churches, a French Calvinift and a Lutheran church, five Popifh, an I feveral hofpitals. It was once a Hans-town and an imperial city. It is now the feat of government, has a canal to Arnheim, and confiderable trade to fome parts of Germany: it trades alfo in fine beer-brewing, fattening of cattle, and exporting of its butter, which is extremely good, into all the other provinces. It is in E. Long. 5. 50. N. Lat. 51..55. NIMETULAHITES, a kind of Turkifh monks, fo called from their founder Nimetulahi, famous for his doctrines and the aullerity of his life. NIMPO, a city and fea-pert town of China, in the province of Chekiang. It is feated on the eaftern fea of China, over-againft Japan. It is a city of the firfi: rank, and ftands at the confluence of two fmall rivers, which, after their union, form a channel that reaches to the fea, and is deep enough to bear veflels of 200 tons burden. The walls of Nimpo are 5000 paces in circumference, and are built with free-ftone. There are five gates, befides two water-gates for the paffage of barks into the city ; a tower feveral ftories high, built of bricks ; and a long bridge of boats, fattened together with iron chains, over a very broad canal. This city is commanded by a citadel built on a very high rock, by the foot of which all veflels mufl: ne- ceflarily pafs. The Chinefe mefchants of Siam and Batavia go to this place yearly to buy filks, which are the find! in the empire. They have alfo a great trade with Japan, it being but two days fail from hence : thither they carry filks, fluffs, fugar, drugs, and wine ; and bring back copper, gold, and filver. E. Long. 1 22. o. N. Lat. 30. o. NIMROD, the fixth fon of Cufh, and in all ap¬ pearance much younger than any of his brothers : for Mofes mentions the fons of Raamah, his fourth bro¬ ther, before he fpsaks of him. What the facred hi- ftorian fays of him is fhort; and yet he fays more of. him than of any other of the pofterity of Noah, till he comes to Abraham. He tells us, that “ Nimrod began to be a mighty one in the earth $” that he was. a .; N I M [ 80 ] HIM Nunrot’. a mighty hunter before the Lord,” even to a pro- —"v " verb ; and that “ the beginning of his kingdom was Babel, and Erech, and Accad, and Calneh, in the land of Shinaar.” From this account he is fuppofed to have been a man of extraordinary ftrength and valour. Some re- prefent him as a giant; all confider him as a great warrior. It is generally thought, that by the words a mighty hunter, is to be undcrftood, that he was a great tyrant ; but fome of the rabbins interpret thofe words favourably, faying, that Nimrod was qualified by a peculiar dexterity and ftrength for the chace, and that he offered to God the game which he took; and feveral of the moderns are of opinion, that this paffage is not to be underftood of his tyrannical op- prefiions, or of hunting of men, but of beafts. It muft be owned, that the phrafe before the Lord may be taken in a favourable fenfe, and as a commendation of a per- fon’s good qualities; but in this place the generality of expofitors underftand it otherwife. Hunting muft have been one of the moft ufeful em¬ ployments in the times juft after the difperfion, when all countries were over run with wild beafts, of which it was neceflary they fhould be cleared, in order to make them habitable; and therefore nothing feemed more proper to procure a man efteem and honour in thofe ages, than his being an expert hunter. By that exercife, we are told, the ancient Perlians fitted their kings for war and government ; and hunting is (till, in many countries, confidered as one part of a royal education. There is nothing in the fhort hiftory of Nimrod which carries the leaft air of reproach, except his name, which fignilies a rebel; and that is the circum- ftanee which feems to have occafioned the injurious opinions which have been entertained of him in all ages. Commentators, being prepofiefled in general, that the curfe of Noah fell upon the pofterity of Ham, and finding this prince ftigmatized by his name, have in¬ terpreted every paffage relating to him to his difadvan- tage- They reprefent him as a rebel againft God, in perfuading the defcendants of Noah to difobey the divine command to difperfe, and in fetting them to build the tower of Babel, with an impious defign of feeing heaven. They brand him as an ambitious ufurper, and an infolent oppreffbr; and make him the author of the adoration of fire, of idolatrous worfhip given to men, and the firft perfecutor on the fcore of religion. On the other hand, fome account him a virtuous prince, who, far from advifing the building of Babel, left the country, and went into Aflyria, be- caufe he would not give his confent to that projedl. Nimrod is generally thought to have been the firft king after the flood; though fome authors, fuppofing a plantation or difperfion prior to that of Babel, have made kings in feveral countries before his time. Miz- raim is thought by many who contend for the anti¬ quity of the Egyptian monarchy, to have begun his reign much earlier than Nimrod; and others, from the uniformity of the languages fpoken in Aflyria, Babylo¬ nia, byna, and Canaan, affirm thofe countries to have been peopled before the confufion of tongues. The four cities Mpfes gives to Nimrod conftituted a large kingdom in thofe early times, when few kings had more than one; only it muft be obferved, that N° 242. pofleffions might at firft. have been large, and after- wards divided into feveral parcels ; and Nimrod being Nine the leader of a nation, we may fuppofe his fubjefta'““V'* fettled within thofe limits: whether he became pef. felled of thofe cities by eonqueft or otherwife, does not appear; it is moft probable he did not build Ba¬ bel, all the pofterity of Noah feeming to have been equally concerned in that affair ; nor does it appear that he built the other three, though the founding of them, and many more, with other works, are attribu- ted to him by fome authors. It may feem alfo a little ftrange, that Nimrod fhould be preferred to the regal dignity, and enjoy the moft cultivated part of the e'^rth then known, rather than any other of the elder chiefs or heads of nations, even of the branch of Ham. Perhaps it was conferred on him for his dexterity in hunting ; or, it may be, he did not aflume the title of king till after his father Cufli’s death, who might have been fettled there before him, and left him the fovereignty ; but we incline to think, that he feized Shinaar from the defcendants of Shem, driving out Afhur, who from thence went and founded Nineveh and other cities in Aflyria. The feripture does not inform us when Nimrod be* gan his reign : Some date it before the difperfion ; but fuch a conjecture does not feem to full with the Mofaical hiftory : for before the difperfion we read of no city but Babel; nor could there well be more, while all mankind were yet in a body together; but when Nimrod aflumed the regal title, there feem to have been other cities ; a circumtlance which fhows it was a good while after the difperfion. The learned writers of the Univerfal Hiftory place the beginning of his reign 30 years from that event, and in all like¬ lihood it fhould be placed rather later than earlier. Authors have taken a great deal of pains to find Nimrod in profane hiftory : fome have imagined him to be the fame with Belus, the founder of the Baby- lonifh empire ; others take him to be Ninus, the firll AfTyrian monarch. Some believe him to have been Evechous, the firft Chaldean king after the deluge; and others perceive a great refemblance between him and Bacchus, both in aCtions and name. Some of the Mohammedan writers fuppofe Nimrod to have been Zohak, a Perfian king of the firft dynafty ; others contend for his being Cay Cans, the fecond king of the fecond race ; and fome of the Jews fay he is the fame with Amraphel, the king of Shinaar, mentioned by Mofes. But there is no certainty in thefe con¬ jectures, nor have we any knowledge of his immediate fuccefl’ors. The feripture mentions nothing as to the death of Nimrod; but authors have taken care that fuch an ef- fential circumftance in his hiftory fhould not be want¬ ing. Some of the rabbins pretend he was flain by Efau, whom they make hts contemporary. There is a tradition that he was killed by the fall of* the tower of Babel, which was overthrown by tempeftuous winds. Others fay, that as he led an army againft Abraham, God fent a fquadron of gnats, which deftroyed moft of them ; and particularly Nimrod, whole brain was pierced by one of thofe infeCts. NINE, the laft of the radical numbers or charac¬ ters ; from the combination of which any definite number, hewever large, may be produced. “ It is obferved I' rNitteve'b. N I N [ 81 j obferved by hrithmeticians (fays Hume), that the nrodufts of 9 compofe always either 9 or fome leiiet* moduas of 9, if you add together all the charadera of which any of the former promifts is compoled: thus of 18, 27, s6* which are Produfts of 9’ y°u make 9, by adding r to 8, 2 to 7, 3 to 6. Thus ?6q is a produa alfo of 9; and if you add 3, 6, and o, you make 18, a Idler produa of 9.” See Hume s Dialog on Nat. Reiig. p. 167, 168, &C. 2d edit. NINEVEH (anc. geog.), the capital city of Atly- ria, founded by Afhur the fon of Shem (Gen.x. 11.); or, as others read the text, by Nimrod the fon of Cnfh. However this be, yet it muft be owned, that Nine¬ veh was one of the rooft ancient, the moft. famous, the molt potent, and largeft cities of the world. It is very difficult exaaiy to affign the time of its founda¬ tion ; but it cannot be long after the building of Babel. It was fituated upon the banks of the Tigris; and in the time of the prophet Jonas, who was fent thither under Jeroboam IT. king of Ifrael, and, as Calmet thinks, under the reign of Pul, father of Sar- danapalus, king of Aflyria, Nineveh was a very great city, its circuit being three days journey (Jonah rii. 3.) Iviodorus Siculus, who has given us the dimenfions ef it, fays it was 48oftadesrn rircumference, or 47 miles; and that it was furrounded with lofty walls and towers; the former being 200 feet in height, and fo very broad that three chariots might drive on them abreaft ; and the latter 200 feet in height, and J50O in number; and Strabo allows it to have been much greater than Babylon. Diodorus Siculus was, however, certainly miftaken, or rather his tranferihers, as the authors of the Univerfal Hiflory think, in placing Nineveh on the Euphrates, fince all hiftorians as well as geogra¬ phers who fpeak of that city, tell us in exprefs terms that it flood on the Tigris. At the time of Jonah’s million thither, it was fo populous, that it was reck¬ oned to contain more than fix fcore thoufand perfons, who could not diftinguifh their right hand from their left (Jon. iv. n.), which is generally explained of young children that had not yet attained to the ufe of reafon ; fo that upon this principle it is computed that the inhabitants of Nineveh were then above 60c,000 perfons. Nineveh was taken by Arbnces and Belefis, in the year of the world 3257, under the reign of Sardana- palus, in the time of Ahas king of Judah, and about the time of the foundation of Rome. It was taken a fecond time by Aftyages and Nabopolaflar from Chy- naladanus king of Affyria in the year 3378. After Vol. XIII. Parti. N I N this time, Nineveh no more recovered its fcfrmer ipien-' dor. It was fo entirely ruined in the time of Lucia- nus Samofatenlis, who lived under the emper or Adi ian> that no footfteps of it colild be found, nor fo much as the place where it flood. However, it was. rebuilt under the Perfians, and deflroyed again by the Saia- cens about the feventh age. Modern travellers fay (a), that the ruins of ancient Nineveh may flill he feen oh the eaflern banks 01 tud Tigris, oppofit# to the city Moful or Mouftil: (Sec MoUsul). Profane hiilorrans tell us, that Ninus firft founded Nineveh ; but the (cripture allures us, that it was Afhur or Nimrod. The facred authors make frequent mention of this city ; and Nahum and Zephaniah foretold its ruin in a very particular and pathetic manner, NINIA, or Ninian, commonly called St Ninian, a holy man among the ancient Britons. He refided at or near a place called by Ptolemy Luecopibia, and by Bede Candida Rafa ; but the Enghfh and Scotch called it Whitherne. We mention him, becaufe he is faid to have been the fir ft who converted’ the Scots and Pi£t» to the Chriftian faith ; which he did during the reigif of Theodofius the Younger. Bede informs us, that he built a church dedicated to St Martin, in a ftyle unknown to the Britons of that time ; and a'dds, that during his time the Saxons held this province (Gallo-^ v'tdia now Galloway), and that, as in cotifequence ot the labours of this faint the converts to Chriftianity increafed, an Epifcopal fee was eftablifhed there. Dr Henry, confidertng that “ few or none of the writings of the moft ancient fathers of the Britifh church are now extant, and fince little being faid of them by their cotemporaries, we can know little of their per- fonal hiftory and of the extent of their erudition,” gives a fhort account of fome of them. Of St Ninian he fays, “ he was a Briton of noble birth and excel¬ lent genius. After he had received as good an edu¬ cation at home as his own country could afford, he travelled for his further improvement, and fpent feve- ral years at Rome, which was then the chief feat of learning as well as of empire. From thence he re¬ turned into Britain, and fpent his life in preaching the gofpel in the moft uncultivated parts of it, with equal zeal and fuccefs.” There is a fmall town called St Ninian about a mile fouth of Stirling. Its church had been occupied by thd rebels in 1745 as a powder-magazine ; who on their re¬ turn blew it up in fuch haite, as to deftroy fome of theiif own people and about fifteen fpeftators. NING-po-fou, called by the European# i3 ir1 e 1 \V 1C 1 aik ic w : ra’1 nit tm (A) Th is affertion, however, is far from feeming probable ; for every trace of it feems to have fo totally difappeared, even fo early as A, D. 627, that the vacant fpace afforded a fpacious field for the celebrated battle between the Emperor Heraclius and the Perfians. There are few things in ancient hiflory which have more puzzled the learned world, than to determine the fpot where this city flood. Mr Ives informs Us, that fome have imagined it flood near Jonah’s tomb; others, however, place it at another place, fome hours journey up the Tigris. Thefe different opinions, however, feem perfedlly reconcileable ; for it appears at leaft probable, that ancient Nineveh took in the whole of the ground which lies between thefe two ruined places. Mr Ives adds, that “ what confirms this conjedlurc is, that much of this ground is now hilly, owing no doubt to the rubbifh of the ancient buildings. There is one mount of 200 or 300 yards fquare, which ftands fome yards r.orth-eaft of Jonah’s tomb, whereon it is likely a fortification once flood. It feems to bare been made by nature, or perhaps both by nature and art, for fuch an ufe.” Ninon II Ni>. N I N [ an excellent port, on the eaftern coafl: of China, op- pofite to Japan- Eighteen or twenty leagues from _ this place is an ifland called Tcheou-chan, where the Engli/h iirfl; landed on their arrival at China. The lilks manufadtured at Ning-po are much edeem- ed in foreign countries, efpecially in Japan, where the Chinefe exchange them for copper, gold, and filver. This city has four others under its jurifdidlion, belides a great number of fortreffes. NINON lenclos, a celebrated lady in the court ©f France, was of a noble family, and born at Paris in the year 1615; but rendered herfelf famous by her wit and gallantries. Her mother was a lady of exem¬ plary piety; but her father early infpired her with the love of pleafure. Having loft her parents at 14 years of age, and finding herfelf miftrefs of her own actions, fhe refolved never to marry: fhe had an in¬ come of 10,000 livres a year ; and, according to the leffbns flie had received from her father, drew up a plan of life and gallantry, which fhe purfued till her death. Never delicate with refpeft to the number, but always in the choice, of her pleafures, fhe facrificed nothing to intereft ; but loved only while her taftefor it continued; and had among her admirers the greateft lords of the court. But though Hie was light in her amours, fhe had many virtues.— She was conftant in her friendfhips, faithful to what are called the laws of honour, of ftridl veracity, difinterefted, and more par¬ ticularly remarkable for the exa&eft probity. Women of the moft refpe£tahle characters were proud of the honour of having her for their friend ; at her houfe was an aftemblage of every thing moft agreeable in the city and the court ; and mothers were extremely de- firous of fending their fons to that fchool of polite- nefs and good tafte, that they might learn fentiments of honour and probity, and thofe other virtues that tender men amiable in fociety. But the illuftrious Madame de Sevignewith great juftnefs remarks in her letters, that this fchool was dangerous to religion and the Chriftian virtues ; becaufe Ninon Lenclos made life of feducing maxims, capable of depriving the mind of thofe invaluable treafures. Ninon was efteemed beautiful even in old age ; and is faid to have infpired violent pafilons at 80. She died at Paris in 1705. This lady had feveral children ; one of whom, named Chevalier de Villiers, oocafioned much difeourfe by the tragical manner in which he ended his life. He became in love with Ninon, without knowing that fhe was his mother; and when he difcovered the fecret of his birth, ftabbed himfelf in a fit of defpair. There have been publifhed the pretended Letters of Ninon Lenclos to the marquis de Sevigne. NINTH, in mufic. See Interval. NINUS, the firft king of the AfTyrians, was, it is faid, the fon of Belus. It is added, that he enlarged Nineveh and Babylon ; conquered Zoroafter king of tbe Baftrians ; married Semiramis of Afcalon ; fub- dued almoft all Afia; and died after a glorious reign of 52 years, about 1150 B. C.? but all thefe fa&s are uncertain. See Semiramis. NIO, an ifland of the Archipelago, between Naxi 82 ] N I O to the north, Armago to the eaft, Santerino to the fouth, and Sikino to the weft, and is about 35 miles in circumference. It is remarkable for nothing but Homer’s tomb, which they pretend is in this ifland ; for they affirm that he died here in his paffage from Samos to Athens. The ifland is well cultivated, and not fo fteep as the other iflands, and the wheat which it produces is excellent; but oil and wood are fcarce. It is fubjeft to the Turks. E. Long. 25. 53. N. Lat. 35* NIOBE, (fab. hift ) according to the fi&ions of the poets was the daughter of Tanta'us, and wife of Ampht- on king of Thebes ; by whom fhe had feven fons and as many daughters. Having become fo proud of her fer¬ tility and high birth, as to prefer herfelf before La- tona, and to flight the facrifices offered up by the Theban matrons to that goddefs, Apollo and Diana the children of Latona, refented this contempt. The ormer flew the male children and the latter the fe¬ male ; upon which Niobe was ftruck dumb with grief, and remained without fenfation. Cicero is of opinion,, that on this account the poets feigned her to be turned into ftone. The ftory of Niobe is beautifully related in the fixth book of the Metamorphofes of Ovid. That poet thus defcribeslier transfoimation into ftone. Widow’d and childlefs, lamentable ftate ! A doleful fight, among the dead fhe fat ; Harden’d with woes, a ftatue of defpair, To ev’ry breath of wind unmov’d her hair ; Her cheek ftill redd’ning, but its colour dead. Faded her eyes, and fet within her head. No more her pliant tongue its motion keeps. But Hands congeal’d within her frozen lips. Stagnate and dull, within her purple veins, Its current flopp’d, the lifelefs blood remains. Her feet their ufual offices refufes, Her arms and neck their graceful geftures lofe : Adlion and life from every part are gone, And ev’n her entrails turn to folid ftone. Yet ftill fhe weeps; and whirl’d by ftormy winds, Borne thro’ the air, her native country finds ; There fix’d, fhe Hands upon a bleaky hill; There yet her marble cheeks eternal tears diftil. Niobe in this ftatue is reprefented as in an ecftacy of grief for the lofs of her offspring, and about to be converted into ftone herfelf. She appears as if de¬ prived of all fenfation by the excefs of her forrow, and incapable either of fhedding tears or of uttering any lameetations, as has been remarked by Cicero in the third hook of his Tufculan Queflions. With her right hand fhe clafps one of her little daughters, who throws herfelf into her bofom ; which attitude equally fhows the ardent affe&ion of the mother, and expreffes that natural confidence which children have in the pro- teftion of a parent. The whole is executed in fuch a wonderful manner, that this, with the other ftatues of her children, is reckoned by Pliny among the moft beautiful works of antiquity : but he doubts to whom of the Grecian artifts he ought to aferibe the honour ofthem(A). We have nocertain inforraatfon at what pe¬ riod Niobe. (a) Pat hxfitatio in templo Apollmis fofianx, Niobem cum libcris morientem, Scopas an Praxiteles fecerit. N I S [ S Niobc. riod this celebrated work was tranfported from G'I^ece II to Rome, nor do we know where it was firft eredted. Nifan* Flaminius Vacca only fays, that all thefe rtatues were found in his time not far from the gate of St John, and that they were afterwards placed by the Grand Duke Ferdinand in the gardens of the Villa de Medici near Roire.—An ingenious and entertaining traveller (Dr Moore), fpeaking of the ftatue of Niobe, fays, “ The author of Niobe has had the judgment not to exhibit all the diitrefs which he might have placed in her countenance. I his confummate artift was afraid of difturbing her features too much, knowing full well that the point where he was to expert moft fympathy was there, where diflrefs co-operated with beauty, and where our pity met our love- Had he fought it one ftep farther in expreflion, he had loit it. In the following epigram this ftatue is afcribed to -Praxiteles: Ex fcuf P ©£0< 8‘U 3-a.Xi?oy. Ex (hxifloM Zaxv IIpa^fTsXrK t/j.Tra.K 'v fipyae-aro. While for my childrens fate I vainly mourn’d, The angry gods to maffy ftone me turn d ; Praxiteles a nobler feat has done, He made me live again from being ftone. The author of this epigram, which is to be found in the 4th book of the Anthologia, is unknown. Sca- liger the father, in his Farrago Epigrammatum, p. 172. afcribes it to Callimachus, but this appears to be only conjedure. Coelius Calcagninus has made a happy tranflation of it into Latin. Vlvam olim in lapidem vertemnt numina ; fed me Praxiteles vivam reddidit ex lapide. And perhaps the following French verfion of it will appear no lefs happy ; T)e •vine que fetois^ les Dieux M’ont changee en pierre majfive : Praxitele a fait beaucoup mieux, De pierre il ml a fed rendre vive. NIPHON, the largeft of the Japan iflands, being €00 miles long and 100 broad. See Japan. NIPPERS, in the manege, are four teeth in the fore-part of a horfe’s mouth, two in the upper, and two in the lower jaw. A horfe puts them forth be¬ tween the fecond and third year. NIPPLES, in anatomy. See there, n° 112. NIPPLE-wort, in botany. See Lapsana. NISAN, a month of the Hebrews, anfwering to our March, and which fometimes takes from February or April, according to the courfe of the moon. It was the firft month of the facred year, at the coming out of Egypt (Exod. xii. 2 and it was the feventh month of the civil year. By Mofes it is called Abib. The name Nifan is only fince the time of Ezra, and the return from the captivity of Babylon. On the firft day of this month the Jews fafted for the death of the children of Aaron (Lev x. 1, 2, 3.} On the tenth day was celebrated a faft for the death of Miriam the fifter ol Mofes; and every one pro¬ vided himfelf with a lamb for the paffover. On this day the Iftaelites pafled over Jordan under the eondud of Jolhua (iv. 19.) On the fourteenth day in the evening they facrificed the pafchal lamb; and 3 1 N I S the day following, being the fifteenth, was held the Nift folemn palfover (Exod. xii. 18. &c.) I he fix- teenth they offered the fheaf of the ears ol barley as the firft-fruits of the harveft of that year (Levit* xxiii. 9. &c.) The twenty-firft was the odave of the paffover, which was foiemnized with particular cere¬ monies. The twenty-fixth the Jews fafted in memory of the death of Joihua. On tins day they began their prayers to obtain the rains of the fpring. On the twenty-ninth they called to mind the lall 01 the walls of Jericho. # . . NISI prius, inlaw, ajudicial writ which lies in cafes where the jury being impannelled and returned before the juftices of the bank, one of the parties re- quefts to have fuch a writ for the eafe of the country, in order that the trial may come belore the juftices in the fame county on their coming thither. The pur¬ port of a writ of tif prius is, that the fheriff is thereuy commanded to bring to Weilminfter the men impan- nelled, at a certain day, before the juitices, “ ni/i prius jvfiiciarii domini regis ad qjffas cap'tendas ver/e- rintP NISIBiS (ane. geog.), a city both very ancient, very noble, and of very confiderable ftrength, fituated in a diftrid called Mygdama, in the north of Mefo- potomia, towards the Tigris, from which it is diilant two days journey. Some aferibe its origin to Nimrod, and fuppoie it to be the jicbad of Mofes. Phe Mace¬ donians called \t xlntwchia of Mygdonia (Plutarch) j fituated at the foot of mount Mafius (Strabo). It was the Roman bulwark againft the Parthians and Perfians. It fuftained three memorable fieges againft the power of Sapor, A. D. 338> an<^ 35° > emPe* ror Jovianus, by an ignominious peace, delivered it up to the Perfians, A. D. 363. - A colony called Sep- timia Nefibitana. Another hiifibiiy of Aria, (Ptole¬ my), near the lake Arias. Mr Ives, who paffed through this place in 1758* tells us, that “ it looked pretty at a diftance, being feated on a confiderable eminence, at the foot of which, runs a river, formerly called the Mygdoniusy with a ftone bridge of eleven arches built over it. Juft by the ri¬ ver, at the foot of the hill, or hills (for the town is feated on two), begins the ruins of a once more flou- rilhing place, which reach quite up to the preknt town. From every part of this place the molt delightful pro- fpeds would appear, were the foil but properly culti¬ vated and planted ; but initead of thofe extentive woods of fruit trees, which Rawolf fpeaks of as growing near the town, not above thirty or forty draggling trees of any kind can be perceived ; and initead ot that great extent of arable land on which he dwells io much, a very iaconfiderable number of acres are now remain¬ ing. The town itfelf is defpicable, the Itreets extreme¬ ly narrow, and the houfes, even thofe which are of it one, are mean. It fuffered grievoully by the famine of 1757, lofing almoft all its inhabitants either by death or defertion. The ftreets prefented many miferable objefts, who greedily devoured rinds of cucumbers, and every other refufe article of food thrown out into the highway. Here the price of bread had rifen near 4000 per cent, within the laft 14 years. NISMES, an ancient, large, and flouriftiing town of France, in Languedoc, with a bithop’s fee, and an academy, it has fuch a number of manuta&ures of L 2 doth NIT { f Nifmfs cloth of gold and filk, and of fluffs formerly known Nithll'ale. ^ name ftrge of Nlfmes, as exceeds that of all the reft of the province. There are feveral monuments of antiquity, of which the amphitheatre is the principal, built by the Romans. The mat/in quanee^ox the fquare- houfe, is a piece of architefture of the Corinthian or¬ der, and one of the finelt in the world. The temple of Diana is in part gone to ruin. It was taken by the Englifti in 1417. the inhabitants were all Cal- vinifts ; hut Louis XIV. demoliihed their church in 1( 85, and built a cable to keep them in awe. It is feated in a delightful plain, abounding in wine, oil, game, and cattle It contains a great number of ve¬ nerable relicks of R<*nan antiquity and grandeur, 'which it is not our bufinefs to defcribe, though it is chiefly remarkable for thefe and its delightful fituation. It owed much to Vl.de Becdelievre, ?. late bifhop there: A prelate (fays MrTownfend) equally diftinguifh- ed for wifdom, benevolence, and piety ; who, by his wifdom and beneficence, in the fpaee of 45 years much more than doubled the number of inhabitants of Nifines ; for, having found only 20,000, he had the happinefs before his death of feeing 50,000 rife up to call him blefled.” Mr Wraxal fays, “it is an ill-built place, containing in itfelf nothing extraordinary or re¬ markable.*’ A hundred fables are related concerning its origin, which is carried into times anterior by ma¬ ny centuries to the Roman conquefb. It probably does not occupy at prefent the fourth part of the ground on which it formerly flood. E. Long. 4. 26. N. Lat. 43/ i°; N1SROCH, a god of the Aflyrfans. Sennache¬ rib was killed by two of his fons while he was psy'ng his adoration to his god Nifroch in his temple (2 Kings xix. 37.) It is not known who this god Nif¬ roch was. The feptuagint calls him Mefrach, Jofe- phus calls him Arafkes. T he Hebrew of Tobit-pub- liftied by Munfter calls him Dagon. The Jews have a ft range notion concerning this deity, and fancy him to have been a plank of Noah’s ark. Some think the word fignifies a dove ; and others underftand by it an eagle, which has given occafion to an opinion, that Jupiter Bellis, from whom the Aflyrian kings pretend¬ ed to be derived, was worfhipped by them under the form of an eagle, and called Nifroch. Our poet Milton gives this name to one of the rebel angels In the aftembly next up flood Nifroch, of principalities the prince. Par. LvJ, B. VI. v. 447. NISSOLIA, in botany : A genus of thedecandria order, belonging to the diadelphia clafs of plants* and in the natural method ranking under the 32d or¬ der, Papilwnacea. The calyx is quinquedentate ; the capfule monofpermous, and terminated by a ligulated wing. e NITHSDALE^Nijhisdale, or Nnldifdale, a di- wfion of Dumfriesfhire in Scotland, lying to the well- ward of Annandale. It is a large and mountainous traft, deriving its name from the river Nid, which iHues from a lake called Loch-cure, runs by the towns of Sanquhar, Morton, and Drumlanrig, and difcliarges itfelf into the Solway Frith. This country was formerly lhaded with noble forefts, which are now almoft deftroyed ; ©i that, at prefent, nothing can be more naked, wild, 1-1 N I V and favage. _ Yet the bowels of the earth yields leai?, Nitecri, and, as is faid, filver and gold : the mountains arc co- 1! vered with Iheep and black cattle ; and here are ftill Nlvdl«< fome confider,:b!e remains of the ancient woods, parti- ~ cularly tliat of HolywootJ, three miles from Dumfries, noted lor an handfome church, built out of the mins of" an ancient abbey ; and a!fo for being the birth-place of the famous afirologer, hence called Joannes de dacro Pojco. Mr Pennant calls it a beautiful vale, improved m appearance by the hold curvatures o» the meandting ft ream, and for fome fpace, he fays, it is adorned with groves and gentlemens feats Ni 1 OCR IS, the mother of Bellhazxar (vvhofe fa¬ ther was Evil Merodaeh aad his grandfather Nebu- chadnez/.ar), was a woman of extraordinary abilities 1 Hie took the burden of all public affairs upon herfelf; . and, while her ion followed his pleafures, did all that: could he done by human prudence t» fuftain the totX tering empire. She perfs&ed the works which Ne- bucaadnezzar had begun for the defence of Babylon * railed ftrong fortifications on tire file of the river, and caufed a wonderful vault to be made under it, lead¬ ing from the old palace to the new, 12 feet high and 15 wide. She likewife built a bridge acrofs the Eu¬ phrates, and acc.ompliihed fevera! other works, which were afterwards nferibed to Nebuchadnezzar. Philo- ttrates, in deferibing this bridge, tells us, that it was built by a. queen, who was a native of Media ; whence we may conclude this illuilrious queen to have been by birth a riede. Nitocris is faid te have placed her tomb over one of the moft remarkable gates of the ci¬ ty, with an infeription to the following effedl : //' any king of Babylon after me Jhall be in diftrefs for money, he may open this fepulchre, and tale out as. much as may ferve him; but if he be in no real neccffity,. let him forbear, or he Jhall have caufe to repent of his pre» fumption. Phis monument and infeription are faid to have re¬ mained untouched till the reign of Darius, who, coufidering the gate was ufelefs, no man caring" to,- pafs under a dead body, aid being invited by the hopes of an immenfe treafure, broke it open : but, in- ftead of what he fought, is laid to have found nothing but a corpfe ; and another infeription. to the follow¬ ing effefk Hadji thou not been moJlinfaUably avaricious and greedy o f the mojh fordid gain, thou wouldji never have violated? the abode, of the dead. NITRARIA, in botany: A genus of the mono- gynia order, belonging to the dodecandria elafs of plants; and in the natural method ranking with thofe of which the order is doubtful. The corolla is- pen- tapetalous, with the petals arched at the top ; the ca¬ lyx quinquefid; the Hamina 15 ; the fruit a mono- fpermous plum. NITRE, or Saltpetre. See ChemistrYj, n° 740. Calcareous Nitre. Ibid. n° 74.7. Cubic Nitrk, Ibid n° 741. Nil ROUS, any thing impregnated with nitre. AtTRous Air. See Aerology and Eudiometer, . NIVELLE, a town of the Auftrian Netherlands,, m the province of Brabant, remarkable for its abbey of Canoneffes. Here is a manufadure of cambrics, and the town enjoys great privileges. The abbey juft mentioned jjiv.’l'e No. N I Z T 85 mentioned is inhabited by young ladies of the firft quality, who are not confer* therein as in nunneries, but may go out and marry whenever they fee conve¬ nient, or'a proper match offers. E. Long. 4. 20. N. Lat. 50. 4^* . Nirtil* de la Chavfcc (Peter Claude), a comic poet, born in Paris; acquired great reputation by m- vcntinr a new kind of entertainment, which was call- td the IVeeptng Comedy. Inhead of imitating Anito- phanes, '< erence, Moliere, and the other celebrated comic poets who had preceded him ; and intfead of exciting laughter by painting the different ridiculous chap’£iers, giving ftrokes of humour and'-abfurchties in ootiduft ; he applied himfelf to reprcfentthe weak- nefles of the heart, and to touch and {often it. In this manner he wrote five comedies : \ ■ La jautfe Arti- ■pothte. l. Le Pr'jug': a la Mods ; thispiece met with great fuccefs. 3. Mclmidc. 4. Amour pour Amour ; and, 5. L'Ecole des Meres. He was received into the French academy in 1736 ; and died at Pans in 1754. at 6' years of age. He alfo wrote a tragedy, intitlcd, "Maxhnatms ; and an Epiflle to Clio, an ingenious di- daftic poem N1VERNOIS, an inland province or France, with the title of a duchy, lying on the weft fide ot. Burgundy, and between it Bourbonnois and Barri. It is pretty fer¬ tile in wine, fruit, and corn ; except the part called Morvunt, which is a mountainous country, and bar ren. There is a great deal of wood, and feveral iron-mines ; as alio mines of pit-coal, which ferves to work their forges. This province is watered by a great number of rivers; of which the Allicr, tne Loire, and the Yonne, are navigable. Nevers is the capital city. NIWEGAL, in Pembrokeftiire, South Wales, a fmall village and beach on the coaft, remarkable only for the difcoveiy of an immenfe quantity of the flumps of trees appearing be'ow low-water-mark, after and during a ftorm in the year 1590, notwithftandmg the country all round it is entirely barren of wood, NIXAPA, a lich and confiderable town in New -Spain, with a rich convent of Dominicans. i he country about it abounds in cochineal, indigo, and fu- gar. E. Long. 97. 23. N. Lat. 15. 20. NIZAM (fays Gibbons), one of the moll illuftrious winifters of the eaft, was honoured by the caliph 4s an oracle of religion and fcience ; he was trufted by the fultan as the faithful vicegerent of his power and jufttce. After an adminiftration of 30 years, the fame of the vizir, his wealth, and even his fervices, were transformed into crimes. He was overthiown by the infidious arts of a woman and a rival; and his fail was haftened by a rafli declaration, that his cap and ink-horn, the badges of his office, were cpnnefted by the divine decree with the throne and diadem of the fultan. At the age of 93 years, the venerable fiatefman was dimiffed by his matter, accufed by his enemies, and murdered by a fanatic : the laft ''•crds of Nizam attefted his innocence, and the remainder of Malek’s life was ftiort and inglorious. NO, (Jeremiah, Ezekiel), No-Ammon, (Nahum) ; a corifiderable city of Egypt, thought to be the name of an idol which agrees with Jupiter-Ammon. The Septuagint tranflate the name in Ezekiel, Dlofpolu, the city of JupiterW Bcchait takes it to be Thebes of 1 N O A which, according to Strabo and Ptoiemy, * Egypt; winen, according tu "Ad L ^ Land, was called Dhjpolis. Jerome, after the Chaldee para- Noah, phralt Jonathan, fuppofes it to be Alexandria, named v by way of anticipation ; or an ancient city of that name is fuppofed to have ftood on the fpot where Alexandria was built. . No. Man’s‘Land, a fpace between tae after part of the belfrey and the fore-part of a fmp s boat, when thefaid boat is {lowed upon the booms, as in a deep- waifted veffel. Thefe booms are laid from the tore- ca(lie nearly to the quarter-deck, where their after¬ ends are ufually fuftained by a frame called the gal- lows, which coniifts of two ftrong polls, about fix teet- hi Hi, with a crofs piece reaching from one to tie other, athwart {hips, and ferving to fupport the enda of thofe booms, mails, and yards, winch he m iefer e to fun ply the place of others carried away, &c. i he fpace called No-Man’s land is ufed to contain any blocks, ropes, tackles, ftc. which may be necefiary on - the forecaille. It probably derives tins name horn its fituation, as being neither on the {larboard nor lar¬ board fide of the (hip, nor on the waift or forecaitle but, being fituated in the middle, partakes equally o£ all thofe places. , NOAH, or Noe, the fon of Lamech, was born in the year of the world 1056. Amidft the general cor¬ ruption into which all mankind were fallen at this time, Noah alone was found to be juft am, peiiea m his generation, walking with God. (Gem vl* ^ T'his extroardmary perion having therefore found a- vour in the eyes of the Lord, and God teeing that all flefh had corrupted their ways, told Noah, that he was refolved to deilroy mankind trom the face of tne earth, by a Hood of waters; and not them alone, but all the beafts of the earth, and every creeping thing, as wfti as the fowls of the air. (Id. ib. 7.) 1 he Lord therefore direfted Noah, as a means of prtferving him and his family (for he had three Ions, bhem, Ham, and Japheth, who were all married before the flood),to build an ark or veffek of a certain form and lize luted to that end, and which might betides accommodate fuch numbers of animals ot all forts, that.were liable to perifh in the flood, as would be fuihcient to piciei ve the feveral fpecies, and again replemfh the eaiin ; to- eether with aft neceffary provifions for them;_dU which Noah performed, as may be ieen more particu¬ larly under the article Ark. , . , , In the year of the world 1656, and nithefiooth year of his age, Noah, by God’s appointment, entered the ark, together with his wife, hk three funs, their Wives,, and alb the animals which God caufed to come to Noah ; and being, all entered, and the door of the ark being fhut upon the outfide, the waters ol the deluge began to fall upon the earth, and increafcd m fuch a manner, that they were fifteen cubits above the tops of the higheft mountains, and continued thus upon the earth for 150 days; fo that whatever had life upon the earth, or in the air, was deftroyed, except inch as were.with Noah in the ark. But the Lord remem¬ bering Noah, fent a wind upon the earth, which cauied the waters to fubfide ; fo that upon the leventeenth day- o£.the feventh month the ark relied on the mountains of Ararat: and Noah having uncovered the roof ot the ark, and obferving the earth was dry, he received or¬ ders from the Lord to come out of it, with all the am- Noah. N O A [ mals that wete therein ; and this he did in the fix hun¬ dred and firft year of his age, on the 27th day of the fecond month. But the hidory of the deluge is morecir- cumftantially related already under the article Deluge. Then he offered as a burnt facrificc to the Lord one of all the pure animals that were in the ark ; and the Lord accepted his facrifice, and faid to him, that he would no more pour out his curfe upon the whole earth, nor any more dellroy all the animals as he had now done. He gave Noah power over all the brute creation, and permitted him to eat of them, as of the herbs and fruits of the earth ; except only the blood, the ufe of which God did not allow him. He bid him increafe and multiply, made a covenant with him, and God engaged himfelf to fend no more an univer- ial deluge upon the earth ; and as a memorial of his promife, he fet his bow in the clouds, to be as a pie !ge of the covenant he made with Noah. ^Gen. ix.) Noah being an hufbandman, began now to cultivate the vine ; and having made wine and drank thereof, he unwarily made himfclf drunk, and fell afleep in his tent, and happened to uncover himfelf in an indecent poiture. Ham, the father of Canaan, having obferved him in this condition, made himfelf fport with him and acquainted his two brothers with it, who were without. But they, inffead of making it a matter of Jport, turned away from it, and going backwards they covered their father’s nakednefs,by throwing a mantle over him. N°ah awaking, and knowing what Ham hac. done, faid, that Canaan the fon of Ham fiiould be accurled, that he fhould be a Have of flaves in refpea of his brethren. It is thought he had a mind to fpare the perfonof his fon Ham, for fear the curfe might light iipon the other children of Ham, who bad no pan in ns adtion. He cur fed Canaan by a fpirit of prophe¬ cy, becaufe the Canaanites his defeendants were after tins to be rooted out by the Tfraelites. Noah added, Let the Lord, the God of Shem, be bleffed, and let Canaan be the fervant of Shem. And he was fo in ettett, in the perfon of the Canaanites fubdued by the Hebrews. Laftly, Noah faid, Let God extend the pofftffion °f Japheth ; let Japheth dwell in the tents of Sh^ let Canaan be hfs fervant ts phecy had its accomphfiiment, when the Grecians, and afterwards the Romans, being defeended from Japheth, Shem3 COri<1Ue* Afa, which was the portion of lived yeVafter the dcI,1ge ^ree hundred and fifty y ears ; and the whole time of his life having been nine hundred and fifty years, he died in the yeaf of the world 2006 He left three Ions, Shem, Ham anc. Japheth, of which mention is made under their fevera! names; and according to the common opinion, ?t T C*! T d am0n!;ft them> iD to repeopk it. To Shem he gave Aha, to Ham Africa fides S't'l? JaPr th', S?mc wiU have that be tides thefe three fona, he had feveral othets. The thcTame oftl “ g‘vet,hi” !hir'y. oaUed Titans, from ihe Tewola nr rm° O'13' Tht>r Pr«c“d 'hat Noah caUed ThnS."” Jonithua orJoI-l^Z^ (zplJrlr/fh N°ah ,a Proacher of righteoufnefs 12 i eter u. 5.), becaufe before the deluge he was in- GO J preaching and declaring to men, fiot only by his difcourfes, but by his unblameable life, and by the building of the ark, in which he was employed fix fcore years, that the wrath of God was ready to pour upon them. But his preaching had no effeft, fince, when the deluge came, it found mankind plunged in their former enormities* (Mat. xxiv. 37 ) Several learned men have obferved, that the Hea* then confounded Saturn, Deucalion, Ogvges, the god Codus or O s, Janus, Protheus, Prometheus^ &c. with Noah. The wife of Noah is called Noriah by the Gnofhcs ; and the fable of Deucalion and his wife Pyrrha is mamfefily invented from the Uiftory of Noah. 1 The Rabbins pretend, that God gave Noah and his Ions (all who are not of the chofen race of Abra¬ ham ^ they call Noachidae) certain general precepts, which contain, according to them, the natural right which is common to all men indifferently, and the older vat ion of which alone will be fufficient to fave them. After the law of Mofes, the Hebrews would not fuffer any ftranger to dwell in their country, un- lefs he would conform to the precepts of the Noachida:. In war they put to death, without quarter, all that were ignorant of them. Thefe precepts are feven in number. The frjl direds, that obedience be paid to judges, naagutrates, and princes. 6 By the/rW, the worfhip of falfe gods, fuperftition and facnlege, are abfolutely forbidden. The third forbids curling the name of God blaf- phemies, and falfe oaths. . '‘ he fourth forbids all inceffuous and unlawful eon- jundfions, as fodomy, befliality, and crimes againff na¬ ture. ° fifth forbids the effufion of blood of all forts of animals, murder, wounds, and mutilations. 'Yhtfixth forbids thefts, cheats, lying, &c. y^Jeventh forbids to eat the parts of an animal flill alive, as was pra£tifed by fome pagans. To thefe the Rabbins have added fome others: but what inclines us to doubt the antiquity of thefe" pre¬ cepts is, that no mention is made of them in ferip. ture, or in the writings of Jofephus or Philo; and that none of the ancient fathers knew any thing of them NOB, a facerdotal city of the tribe of Benjamin or Tphraim. St Jerom fays, that in his time it was en¬ tirely deftroyed, and that the ruins of it might be feeu not far from Diofpolis. When David was drove away by Saul, he went to Nob, and afking the high-prielt Abimelech for fome provihons and arms, the prieff gave him the ihew-bread which had been lately taken off the holy table, and the fword of Goliah. Saul be- ing mfotmed ofthis by Doeg, caufed all the prielts of Nob to be flam, and the city to be deftroyed. i Sam. XXI. xxn. nf 3 CltyT!?e>’ond Jordan‘ It took the name of Nobah from an Ifraehte of this name who had made thf°ivr!r v (Numb, xxxii. 42.) Gideon purfued e Midranites as far as this city, (Jndg viii. 2.1 Eufe- abolt^G3' -ihere 18 3 r ef°Iate Pls^ of th>s about eight mdes from Hefirbon towards the fouth. 1 *_ ‘is could not be the Nobah now mentioned, bc- CaU^rTa&,rch tarther t0 the north. NOBILIARY, in literary hiftorjq a book con. ^ taining —v or province : fuch are Chonere 8 JNobmary or i^au F „ ,t m r(fadil be allowed that this rea- c'ermanr'are^fald^o bi^particu^ar^y^careful of their foniog is concluflve; hot the great queilion return, Sbiliarie., in orjer to keep up tire dignity of their “^^3^ U "ffL't [oinedwith rLhes : in the S^ accepta! ing on the rights and equality of men; and the an- ^ o/ythJe wordT U mean, that quality or dignity freer, which have fometrmes been green to thetnfup. L1UU Ui t-aav. ervr.v^, -- a a . “ - which raifes a man above the rank of a peaiant or a At a time when the public mhul is fo much agita¬ ted on this fubjeft, ®r fubjefts nearly allied to it, per¬ haps the lefs that is faid on it the better. We mould therefore (as far as concerns the queftion about its ex- pofe a degree of perfection in human nature, which, if it were real, would make all civil in ftitutions ufelefs, as well as the reveriesof thofe reformers. The conduct of the democratic dates of Pagan antiquity, together with the opprefiive anarchy and fhameful violences which we have feen and {till fee in a neighbouring kingdom, will be therefore (as as conce s n ^ ^ ‘0„fldered by many as a full and fatisfadory anfwer, de itTIZ it oh„r dut duced from /xperijnce. to aU the fchemes of .he erfrona- « uiee our reade" ai lead fome Idea of It, and were ry theorift : fuch fads at lead render the abolmon of it not our hufmefs to lay before them a few of thofe the order of nobility a matter of more importance. arguments which of late have been focoplo,,(ly retail- and of infinitely greater difficulty, than thofe who. eel both for and againft this illullnous older of civil plead for it are dlfpofed to allow. fociety : leaving them, however, that liberty which every man unqueftionably ought to be allowed, of jud¬ ging for themfdves as they (hall fee moft proper. Whether that equality of rank and condition which has of late been fo loudly contended for would be more agreeable to the order of nature, or more conducive to the happinefs and profperity of mankind, may in¬ deed be made a queftion ; but it is a queftion, we ap¬ prehend, which cannot receive different anfwers from men capable of reflefting without prejudice and par¬ tiality. A ftate of perfect equality can fubfift only among beings poffefiing equal talents and equal vir¬ tues ; but fuch beings are not men. Were all man¬ kind under the conftant influence of the laws of vir¬ tue, a diftinftion of ranks would be unneceffary ;^but It is an opinion not uncommon, and at lead plaufi- ble, that the nobility of a well regulated ftate is the heft fecurity againft monarchial defpotifm or lawlefs ufurpation on the one hand, and the confuflon of de¬ mocratic infolence on the other. Self-intereft is the moft powerful principle in the human breaft ; and it is obvioufly the intereft of fuch men to prefer ve that balance of power in fociety upon which the very ex- iftence of their order depends. Corrupted as the pre- fent age confefledly is, a very recent inftance could be given, in which the Britifti Houfe of Peers refcued at once the fovereign and the people from the threaten¬ ed tyranny of a factious junto. As it is our bufxnefs,. however, to exhibit all opinions of any celebrity, we {hall lay before our readers a fhort extract from Du- government itfelf would likeieife be lame's Critical Hiftory of the French Nobility which, unneceffary, becaufe men would have attained all that contains, in few but forcible words, fome of the com.- uerfe&ion^to which it is the object of civil govern- mon arguments againft; this diftmdtion of ranks. _ merit as well as of religion to guide them : every man “ Nobility (fays he), a diftinflion equally impo- then would he a law unto himfelf. But whilft, in fo litic and immoral, and worthy of the times of igno- many breafts, the felfilh paflions predominate over ranee and of rapine, whtch gave it birth, is a violation thofe which are fecial, violence muff be reftrained by of the rights of that part of the nation that is depn- authority ; and there can be no autboiity without a diftin&ion of ranks, fuch as may influence the public opinion. It is well obferved by Hume, that government is ved of it; and as equality becomes a Jlhnulus towards diftinftion, fo on the other hand this is the radical vice of a government and the fource of a variety or evils. It is almoil impoffible that there fljould be any. founded"only on opinion ; and that this opinion is of uncommon inftances of virtue in a ftate, when recom , * • • -r a n vlerVii- nenres belonff excluhvelv to a certain clafs or fociety two kinds, opinion of intereft, and opinion of right When a people are perfuaded that it is their inteieft to fupport the government under which they live, that government muft he very {fable. But among the ■worthlefs and unthinking part of.the community, this perfuafion has feldom place. All men, however, have pences belong exclufively to a certain clafs of feeiety,, and when it cofts them no more to obtain thefe than the trouble of being born. Amongft. this lift of privi¬ leged perfens, virtues, talents, and genius, muft of courfe be much lefs frequent than in the other claffes, fince, without the poffeflion of any of thefe qualities, n place. .mi men, nuwever, uavt mivv, - r _ ^ , j ij a action of right.- of a right to property and a right they who belong to ,t are (1,1 honoured and rewarded, to power: and when the majoriiy of a nation conft- Thofe who profit by th,> abfurd fubverfion of pnne,- ders a certain order of men as haring a right to that pies, and thofe who lofe by th.s unjuft d.ftnbut,on of eminence in which they are placed, this opinion, caU favours, wh.ch feem to have grown into a nght can- it prejudice or what we will, contributes much to the not have any other than falfe, immoral, and pernic.oua peaf e and happinefs of civil feciety. There are many, ideas concerning merit. # . , f however,whothinkotherwife,and imagine that« thefe- A perfed equality, however, in rank ^Jortunt eiety in whic'1 the greateft equality prevails muft always has feldom been contended for, except by the mo t fce the moll fecure. Thefe men conceive it to be the ignorant enthufiAfts, It is indeed doubtful whether Hohr'ity it/lac ip. N 0 B [ 88 I it could pcfllbly exiH:. The more moderate and ra- dignity, which tional reformers have acknowleged, that as thefe diffe¬ rences have always exifted in fome way or other, fo, from the infinite variety of talents and attainments in the world, we have reafon to expeft they will exift in every form of government and among every people. The qtreftion, therefore is reduced to this : Whether 'the prefent mode of diftinftion, or any other which could be inftftuted in its Head, be upon the whole the bell ? That the prefent is not perfeft, or wholly with¬ out faults, few will-be fanguine enough to contradict : and a wife man in the fober hour of philofophical reflection will fcarce prefume to affert, that any other fcheme which human ingenuity can plan would be wholly without imperfection, or altogether free from error. JThe cafe is, the errors of our own fyftem are prefent, and on this account we fee and feel them with peculiar force: the other plan we look forward to, perhaps in too fanguine a manner, and we probably forget, in the delufive heat of imagination, that if di- 'ftinCtion depended entirely on merit, we fhouid fcarce find a fociety of men fo honeft, or fo able, as alwavs to reward it according to its deferts ; or if this were pofuble, as perhaps in the nature of things it is not, fuch is the felf partiality of the generality of men, that few would think he were dealt juftly by if he were not promote 1 as well as his neighbour; and it rs clearly impoffible to promote every one. For fuch reafons then, and many more which our limits oblige us to omit, many think (and we are inclined to think with them), that it is fafer to remain as we are, as we know the evils that attend our fituation, and are ftiil able to bear them, rather than to hazard a change, which, with fome benefits, might alfo perhaps fncreafe the troubles, and deftroy many of the plea- fures, of focial life. Perhaps it may not be amifs to lay before our readers the following obfervatlons from that molt ju¬ dicious commentator on the laws of England, Mr Ju- ftice Blackftone, on this important fubjeCf. “ The diftmCHon of rank and honours (fays he) is neceflary in every well-governed {late, in order to reward fuch as are eminent for their fervices to the public, in. a manner the moll defirable to individuals, and yet without burden to the community ; exciting thereby an ambitious, yet laudable ardour, and gene¬ rous emulation, in others. And emulation, or vir¬ tuous ambition, is a fpring of adion which, however dangerous or invidious in a mere republic or under a d*fpotic fway, will certainly be attended with good effeds under a free monarchy ; where, without deftroy- rng its exigence, its excefies may be continually re- flrained by that fuperior power from which all ho¬ nour is derived. Such a fpirit, when nationally dif- fufed, gives life and vigour to the jeommtmfty ; it fets ail the wheels of government in motion,'which, under a wife regulator, mny be direded to any beneficial purpofe ; and thereby every individual rnay be made fubfervient to the public good, while he principally means to promote his own particular view's. A body of nobility is alfo mare peculiarly necefibry in our mixed and compounded conflitution, in order to fup- port the rights of both the crown and tire people, by forming a barrier to withftand the encroachments of *oth. it creates and preferves that gradual fcale of 243. . Na NOB v - proceeds from the peafant to the fMilfw prince; rifing jike a pyramid from a broad foundation “y*"*** and dimmifhtng to a point as it rifes. It is this afcendtng and contrading proportion that adds ft*- r j / torany government; for when the depaiture is fudden from one extreme to another, we may pro¬ nounce that. Hate to be precarious. The nobility therefore, are the pillars, which are reared from among the people, more immediately to fupport the throne-* and, if th ft falls, they muft alfo be buried under its ruins. Accordingly, when in the laft century the commons had determined to extirpate monarchy, they alfo voted the houfe of lords to. be ufelefe and dan- gerous. rtnd fince titles of nobility are thus expe¬ dient m the ftate, it is alfo expedient that their own- ers ftiould form an independent and feparate branch- ol the legiflature. If they were confounded with the mafs of the people, and like them had only a vote .in eleding representatives, their privileges would foou ' be borne.down and overwhelmed by the popular tor¬ rent, which would effe&ualiy level all diftin&ions. It is therefore highly necefl'ary that the body of nobles {houlu harea diftmtt aftembly, diftintt deliberations, and diltinct pow'ers from the commons.”—Thefe re¬ marks, at a time like the prefent, deferve our ferious attention ; nor do we fuppofe our readers will be dif- Fu-iir WC io^°'v'iig obfervations on the iubject rrom a periodical publication of long {landing and very confiderable merit. ^ “ Birth and nobility are a ftronger obligation to vir- Gent. Mar. tuethan is laid upon meaner perfons. A vicious or Vd. xti. “"honourable nobleman is in etfedt perjured ; for his honour is his oath. . w Under the patriarchal fcheme, and at the firft fet- tmg.out of the tribes, the heads of families had their particular efcutcheons, and their genealogies record¬ ed with the utmoft exaftnefs : Even the Ancient of Days confirmed this; he often.put his people in mind of the glory and virtues of their forefathers ; and hath fet a precedent for attainders, by vTfiting the third and fourth generation. 6 “It is a_ vulgar error to fuppofe, that his blefted Se» chofe his followers out of the meaneit of the people, b.ecaufe mehnnics ; for this was part of the educa¬ tion of every Jewifti nobleman r Two of the number, being his kinlmen, were of the royal houfe of David; one was a Roman gentleman, and another of the royal tamily of Syria ; and for the reft, he had the fame right of creation as his father and his vicegerents, of advancing the poor to honour, and of exalting the lowly and meek. ° d he ancient Clreeks and Romans paid great regard to nobility; but when the levelling principle obtained, and the people ftiared power and honour, thofe ftate* foon dwindled and came to ruin. And in prefent * Rome, great refpe& is paid to the renowned fami¬ nes of Colonna and Ctefarini. In Venice, the notion' of nobility is carried fo high as to become inconfiftent witn a republican fcheme. The Spaniards pay more regard to their old nobles than to their old Chriftians; and the French are but little behind them. What was faid ©t the duke of Montmorency by Henry IV. I hat he was a better gentleman than himfelf,** was, perhaps, the reafon why the laft heir of fo il~ lullnous a lamily was cut off, to make the houfe of 3 Bourbon nob r Sg. ] NOB JIoHHty. Bourbon the fir(l in France.—The Welfli, Irifh, and Polanders, are remarkable for their attachments to blood and pedigree. “ It is for the fake of the meaneft of our people, that the high value and regard for quality fhould be kept up ; for they are beft governed by thofe who feem formed for power : the robe of authority fits eafy upon them, and fubmiflion is as much our choice as our duty ; but upftarts prove the won't of tyrants. “ The ancient legifiators, who ftudied human nature, thought it advifeable, for the better government of itates, that the people fhould be divided into the noble and the common. They judged it for the'uni- verfal good of mankind, that the valiant and the wife fhould be feparated from the reft, and appointed for council and command. “ To this I take it that the inftitution of nobility is owing in all countries; even thofe nations which we are pleafed to call favage, diilinguifh the wife and the valiant, obey them as counfellors, and commanders which is placing them in the rank of nobles. “ Some, I know, look upon the inftitution of nobi¬ lity to be one of the grofteft impofirions upon the com¬ mon fenfe of mankind ; they confine it indeed to he¬ reditary nobility ; they allow, that, thofe who have done the commonwealth any fignal fervice fhould be diftinguifhed with honours, but it feems an abfurdity to them that a man fhould be born a legiflator, as if wifdom or a knowledge of government run in the blood. But it they would confider how ftrong the love of po- llerity is planted in human nature, they muft allow that nothing can be a ftronger motive to great and worthy aftions, than the notion that a man*s pofte- nty will reap the honour and profit of his labours. Befides, we are to fuppofe that men born to honours and a high fortune may be bred up in generous fenti- ments, and formed for the ftation they are to fill; that they muft be ftrangers to thofe vicious falfehoods qnd corruptions which neeeflity firft, and then habit, puts men upon praftiling, whofe lives are fpent in purfuit of their fortunes. I will own, notwithlfand- ing all thefe advantages, that many of them are like rocks whofe heads are in the clouds, but are fo barren that they are quite incapable of producing any thing ; but in general, were their minds only upon a level with thofe of other men, we fhould expeft better fiuit from them. “ As authority is founded in opinion, all wife com¬ monwealths have been extremely jealous in keeping up the honour of their nobility. Wherever they be¬ come bafe, effeminate, cowardly, or fervile, their au¬ thority finks, they fall into contempt; then the people begin to confider them as ufelefs to government, and is well calculated to fupply a confiderable quantity of fifh, efpecially eels. The government generoufly grant¬ ed the inveftiture to private perfons, who already draw no inconfiderable advantage from the fifhing; and did they but adopt better methods, they might every year ■ fait many thoufands of eels, which would greatly an- fwer our internal commerce, and fave at leaft a part of the money that goes out of the country for foreign fait fiffi. To the left of the city of Nona, the walls of fome ancient ruinous buildings appear ; which pro¬ bably in ancient times were fituated on the main land,- though now furrounded by water. The fea forms a narrow channel in this place, which is eafily fordable, and, at low water, the fmalleft boat can fcarcely pafs.” NONAGE, in law, generally fignifies all the time a perfon continues under the age of 2 1 ; but, in a fpecial fenfe, it is all the time that a perfon is under the age of 14. NON-cape, a promontory on the weft coaft ®f Africa, oppofite to the Canary iflands. W. Long. 12. o. N. Lat. 44. 28. NONCONFORMISTS, thofe who refufe to join the eftabliftied worfhip. Nonconformifts, in England, are of two forts. Firft, fuch as abfent themfelves from divine worfhip in the efta- blifhed church through total irreligion, and attend the fervice of no other perfuafion. Thefe, by the ftat. 1 Eliz.- c. 2. 23 Eliz. c. 1. and 3 Jac. I.. c. 4. forfeit one (hilling to the poor every Lord’s-day they fo abfent themfelves, and 20I. to the king if they continue fuch default for a month together. And if they keep any inmate thus irreligioufly difpofed in their houfes,. they forfeit 1 ol. per month. The fecond fpecies of nonconformifts are thofe who offend through a miftaken or perverfe zeal. Such. were Nona 11 Noncon- fomnifK B lad ft* Cummer,t* Tvisncon* formiftg. Blcehjl. Comment. NON I 96 ] NON were efteemed, by the Englifh laws enabled fince the time of the Reformation, to be Papifts and Proteftant diffenters : both ©f which were fuppofed to be equally fchifmatics, in not communicating with the national church ; with this difference, that the Papifts divided from it upon material, though erroneous, reafons ; but many of the diflenters upon matters of indifference, or, in other words, for no reafon at ail. “ Yet cer¬ tainly (fays Sir William Blackftone) our anceftors were miftaken in their plans of compulfion and intole¬ rance. The fin of fchifm, as fuch, is by no means the objetd of temporal coercion and punifhment. If, through weaknefs of intelleft, through mifdiredled piety, through perverfenefe and acerbity of temper, or (which is often the cafe) through a profpedt of fecular advantage in herding with a party, men quarrel with the ecclefiaftical eftabliftiment, the civil magiftrate has nothing to do with it; unlefs their tenets and practice are fuch as threaten ruin or difturbance to the ftate. He is bound indeed to pioteft the eftablifhed church : and if this can be better eft'e&ed by admitting none but its genuine members to offices of truft and emolu¬ ment, he is certainly at liberty fo to do ; the difpofal of offices being matter of favour and diferetion. But this point being once fecured, all perfecution for di- verfity of opinions, however ridiculous or abfurd they may be, is contrary to every principle of found policy and civil freedom. The names and fubordination of the clergy, the pofture of devotion, the materials and colour of the minifter’s garment, the joining in a known or unknown form of prayer, and other matters of the fame kind, mud be left to the option of every man’s private judgment. “ With regard therefore to Protejlant (UJJmters, although the experience of their turbulent difpofition in former times occafioned feveral difabilities and re- ftriftions (which I ftiall not undertake tojuftify) to be laid upon them by abundance of ftatutes; yet at length the legiflature, with a true fpirit of magnanimity, ex¬ tended that indulgence to thefe fe&aries, which they themftlves, when in power, had held to be counte¬ nancing fchifm, and denied to the church of Eng¬ land. The penalties are conditionally fufpended by the ftatute 1 W. & M. ft. 1. c. 18. “ for exempting their Majefties Proteftant fubje&s, diffenting from the church of England, from the penalties of certain laws,” commonly called the toleration ad; which declares, that neither the laws above-mentioned, nor the ftatutes 1 Eliz. c. 2. § ‘4-3 Jac. I. c. 4. & 5. nor any other penal laws made againft P©pifh recufants (except the teft afts) ffiall extend to any diffenters, other than Pa¬ pifts and fuch as deny the Trinity: provided, 1. That they take the oaths of allegiance and fupremacy, (or make a fimilar affirmation, being Quakers), and fub- i'eribe the declaration againft Popery. 2. That they repair to tome congregation certified to and regifter- ed in the court of the bilhop or archdeacon, or at the county-feffions. 3. That the doors of fuch meet- ing-houfe fhall be unlocked, unbarred, and unbolted; in default of which, the perfons meeting there are (fill liable to all the penalties of the former afts. Diffent¬ ing teachers, in order to be exempted from the penal¬ ties of the ftatutes 1 3 & 14 Car. II. c. 4. 17 Car. II. c. 2. and 22 Car. II. c. 1. are alfo to fnbfcribe the ^articles of religion mentioned in the ftatute 13 Eliz. N° 243. c. 12. (viz. thofe which only concern the confeffion Nr.nem*. of the true Chriftian faith, and the do&rine of the fa- craments), with an exprefs exception of thofe relating 'r^ to the government and powers of the church, and to infant-baptifm. And by ftatute 10 Ann. c. 2. this toleration is ratified and confirmed ; and it is declared, that the faid aft fhall at all times be inviolably obfer- ved for the exempting fuch Proteftant diffenters as are thereby intended from the pains and penalties there¬ in mentioned. Thus, though the offence of noncon- v - formity is by no means ainiverfally abrogated, it is fufpended, and ceafes to exift: with regard to thefe Proteftant diffenters, during their compliance with the conditions impofed by the aft of toleration : and, under thefe conditions, all perfons, who will approve themfelves no Papifts or oppugners of the Trinity, are left at full liberty to aft as their confciences fhall di- reft them in the matter of religious worfhip. And if any perfon fhall wilfully, maliciouOy, or contemp- tuoufly difturb any congregation, affembled in any church or permitted meeting-houfe, or fhall mifufe any preacher or teacher there, he ffiall (by virtue of the fame ftatute) be bound over to the feffions of the peace, and forfeit 201. But by ftatute 5 Geo. I. c. 4. no mayor or principal rnagiftrate muft appear at any dif¬ fenting meeting with the enfigns of his office, on pain of difability to hold that or any other office : the le¬ giflature judging it a matter of propriety, that a mode of worffiip, fet up in oppofition to the national, when allovced to be exerciftd in peace, ffiould be exercifed alfo with decency, gratitude, and humility. Neither doth the aft of toleration extend to enervate thofe claufes of the ftatutes 13 & \a Car. II. c. 4. & 17 Car. II. c. 2. which prohibit (upon pain of fine and imprifonment) all perfons from teaching fchool, unlefs they be licenfed by the ordinary, and fubferibe a de¬ claration of conformity to the liturgy of the church, and reverently frequent divine fervice eJlabHJhed by the laws of this kingdom. “ As to Papijls, what has been faid of the Proteftant diffenters would hold equally ftrong for a general tole¬ ration of them ; provided thejr feparation was found¬ ed only upon difference of opinion in religion, and their principles did not alfo extend to a fubverflon of the civil government. If once they could be brought to renounce the fupremacy of the Pope, they might quietly enjoy their feven facraments ; their purgatory, and auricular confeffion ; their worfliip of relics- and images; nay, even theirtranfubftantiation. But while they acknowledge a foreign power, fuperior to the fo* •vereignty of the kingdom, they cannot complain if the laws of that kingdom will not tieat them upon the foot¬ ing of good fubjefts. * “ The following are the laws that have been crafted againft the Papifts; who may be divided into three claffes, perfons profeffing Popery, Popiffi recufants convift, and Popiffi priefts. 1. Perfons profeffing the Popiffi religion, betides the former penalties For not frequenting their pariffi-church, are di fable ft from taking any lands either by defeent or purchafe, after 18 years of age, until they renounce their errors; they muft at the age of 21 regifter their eftates before acquired, and all future conveyances and wills relating to them ; they are incapable of prefenting to any ad- vowfon, pr granting to any other perfon any avoid- “ ance NON [ 97 ] NON Noncon. a;,ce of the fame! they may not keep or teach any the dominions of the crown of England, who (hall Noncon- formift*. fchool, under pain of perpetual imprifonment; and, if come over hither from beyond fea (unlefs driven by. or ^1 ~7?r7rJ they willingly fay or hear mafa, they forfeit the one ftrefs of weather and tarrying only a reafonable time), Cmmnt. 200, the other i oo merka, and each ihall fuffer a year’s or (hall be in England three days without conforming imprifonment. Thus much for perfcxis who, from the and taking the oaths, is guilty of high treafon : and misfortune of family-prejudices, or otherwife, have all perfons harbouring him are guilty of felony without conceived an unhappy attachment to the Romilh the benefit of clergy. church from their infancy, and publicly profefs its This is a fhort fummary of the laws agarnft the Pa- errors. But if any evil induftry is ufed to rivet thefe pifts; of which the prefident Montefquieu obferves, errors upon them; if any perfon fends another abroad that they are fo rigorous, though not profeffedly of to be educated in the Popifh religion, or to refide in any the fanguinary kind, that they do all the hurt that religious houfe abroad for that purpofe, or contributes can poflibly be done in cold blood. But in anfwer to to their maintenance when there; both the fender, the this, it may be obferved (what foreigners who only fent, and the contributor, are difabled to fue in law or judge from our ftatute-book are not fully apprized of), equity, to be executor or adminiftrator to any perfon, that thefe laws are ftldom exerted to their utmofl: ri- to take any legacy or deed of gift, and to bear any gour: and indeed, if they were, it wmuld be very dif- office in the realm ; and fhall forfeit all their goods ficult to excufe them, her they are rather to be ac- and chattels, and likewife all their real eftate for life, counted for from their hiftory, and the urgency of And where thefe errors are alfo aggravated by apo- / the times which produced them, than to be approved ftacy or perverlion ; where a perfon is reconciled to (upon a cool revjewr) as a {landing fyftem of law. The the fee of Rome, or procures others to be reconciled, reftlefs machinations of the Jefuits during the reign of the offence amounts to high treafon. 2. Popifh re- Elizabeth, the turbulence and uneafinels of the Pa- cufants, convifted in a court of law of not attending pifts under the new religious eftablifhmeut, and the the fervice of the church of England, are fubjeft to boldnefs of their hopes and wiflres for the fucceffion of the followung difabilities, penalties, and forfeitures, the queen of Scots, obliged the parliament to coun- over and above thofe before-mentioned. They are con- teradl fo dangerous a fpirit. by laws of a great, and fidered as perfons excommunicated ; they can hold no then perhaps neceffary, feverity. The powder-treafon, office or employment; they muff not keep arms in in the fucceeding reign, ftruck a panic into James I. their houfes, but the fame may be feized by the juf- which operated in different ways : it occafioned the tices of the peace ; they may not come within io miles enading of new laws againft the Papifts ; but deter- of London, on pain of iool.; they can bring no ac- red him from putting them in execution. The in- tion at law or fuit in equity ; they are not permitted trigues of queen Henrietta in the reign of Charles I. to travel above five miles from home, unlefs by li- the profped of a Popifh fucceffor in that of Char. II. cence, upon pain of forfeiting all their goods ; and the affaffination-plot in the reign of king William, and they may not come to court, under pain of rool. No the avowed claim of a Popifh pretender to the crown marriage ©r burial of fuch recufant, or baptifm of his in fub'fequent reigns, will account for the exteniion of child, fhall be had otherwife than by the minifters of thefe penalties at thofe feveral periods of our hiftory.,, the church of England, under other fevere penalties. But now that all juft fears of a pretender may be faid A married woman, wdien recufant, fhall forfeit two fo have vanifhed, and the power and influence of the thirds of her dower or jointure, may not be executrix pope has become feeble, ridiculous, and defpicable, or adminiflratrix to her hufband, nor have any part of not only in Britain, but in almoft every kingdom of his goods ; and during the coverture may be kept in Europe ; and as in faft the Britifh Catholics folemnly prifon, unlefs her hufband redeems her, at the rate of difclaim the dangerous principles aferibed to them f ; | see their lol. a-month, or the third part of all his lands. And the Britifh legiflature, giving way to that liberality ofl >y&l Ad- laflly, as a feme-couvert recufant may be imprifoned, fo fentiment becoming Proteftants, have lately repealed to ^ all others muft, within three months after convi6lion, the moft rigorous of the above ediefs, viz. The pu-‘Tc’ either fubmit and renounce their errors, or, if requi- nifhment of Popifh priefts or Jefuits who fhould be, -8,asin- red fo to do by four juftices, muft abjure and renounce found to teach or officiate in the fervices of that church; ferted in the the realm : and if they do not depart, or if they re- which a£ls were felony in foreigners, and high treafon lVla^azl' es turn without the king’s licence, they fhall be guilty of in the natives of this kingdom :—The forfeitures °f felony, and fuffer death as felons without benefit of Popiflr heirs, who had received their education abroad; ^at year. clergy. There is alfo an inferior fpecies of recufaucy, and whofe eftates went to the next Proteftant heir-—. (refufing to make the declaration againft Poperv en- The power given to the fon, or other relation, being joined by ftatute , 30 Car. II. ft. 2. when tendered by a Proteftant, to take poffeffioh of the father’s or other the proper magiftrate);. which, if the party refides relation’s eflate, during the life of the real proprietor: within ten miles of London, makes him an abfolute —And the debarring Papifts from the power of ac- recufant convift ; 0r, if at a greater diflance, fufpends quiring any legal property by purchafe.— In propo- hun from having any feat in parliament, keeping arms fing the repeal of thefe penalties, it was obferved,That, in his houfe, or any horfe above the value of 5I, 3 Po- befides that fome of them had new ceafed to be nccef- pifii pnefts are in a ftdl more dangerous condition. By faiy, others were at all times a difgrace to humanity, flatuie I 1 & 12 W. III. c. 4. Popifh priefts, or hi- The imprifonment of a Popifh prieft for life, only for ffiops, celebrating mafs or exercifing any part of their officiating in the fervices of his religion, was horrible fundions in England, except in the houfes of ambaf- in its nature : And although the mildnefs of govern- fadors, are liable to perpetual imprifonment. And by menthad hitherto foftened the rigour of the law in the the ftatute 27 Lliz. c. 2. any Popifh prieft, born in pradlice, it was to be remembered that the Roman Ca- Vot. XIII. Part L. . N tholic NON [ 98 J NON Noncon- tholic priefts conftantly lay at the mercy of the bafeft formifts an(j mo{j- abandoned of mankind—of common xnform- I4on-Suit. crs > ^or on the evidence of any of thefe wretches, the ■ - magillerial and judicial powers were of neceffity bound to enforce all the fliameful penalties of the aft. Others of thefe penalties held out the moft powerful tempta¬ tions for the commiflion of afts of depravity, at the very thought of which our nature recoils witli horror: They feemed calculated to loofen all the bands of fo- ciety ; to diffolve all civil, moral, and religious obliga¬ tions and duties, to poifon the fources of domeftic fe¬ licity, and to annihilate every principle of honour. The encouragement given to children to lay their hands upon the ellates of their parents, and the re- itriftion which debars any man from the honeft acqui- fition of property, need only to be mentioned to ex¬ cite indignation in an enlightened age. In order the better to fecure the Englilh eflablifhed church againil perils from non-conformilts of all deno¬ minations, infidels, Turks, Jews, heretics, Papifts, and feftaries, there are, however, two bulwarks erefted ; called the corporation and tcj} aBs : By the former of which, no perfon can be legally tlefted to any office relating to the government of any city or corporation, tmlefs, within a twelvemonth before, he has received the facrament of the Lord’s fupper according to the rites of the church of England ; and he is alfo en¬ joined to take the oaths of allegiance and fupremacy at the fame time that he takes the oath of office : or, in default of either of thefe requifites, fuch eleftion ftall be void. The other, called the tejl utf, direfts all officers civil and military to take the oaths and make the declaration again!! tranfubftantiation, in any of the king’s courts at Weftminfter, or at the quarter- feffions, within fix kalendar months after their admif- jion ; and alfo within the fame time to receive the fa¬ crament of the Lord’s Supper, according to the ufage of the church of England, in fome public church im¬ mediately after divine fervice and fermon, and to deli¬ ver into court a certificate thereof figned by the mi- nifter and church-warden, and alfo to prove the fame by two credible witnefles ; upon forfeiture of 500I. and difability to hold the faid office. And of much the fame nature with thefe is the llatute 7 Jac. I c. 2* which permits no perfons to be naturalifed or reftored in blood, but fuch as undergo a like tell : which teft having been removed in 1753, ’n favour °f the Jews, was the next feffion of parliament reitored again with Jome precipitation. NoN-Natura/s, in medicine, fo called, becaufe by their abufe they become the caufcs of difeafes. Phyficians have divided the non-naturals into fix clafles, viz. the air, meats and drinks, deep and watching, motion and reft, the paffions of the mind, the retentions and excretions. Sec Medicine, pajjlm. Non Oljlante, (notivithjlanding,) a claufe frequent in ftatutes and letters patent, importing a licence from the king to do a thing, which at common law might be lawfully done, but being reftrained by aft of par¬ liament cannot be done without fuch licence. Non Pros. See Nolle Profequi. NoN-Suit, fignifies the dropping of a fuit or aftion, or a renouncing thereof by the plaintiff or defendant; which happens moft commonly upon the difeovery of fome error in the plaintiff’s proceedings when the None* caufe is fo far proceeded in, that the jury is ready at N M. the bar to deliver in their verdift. °^lttil NONES, (non;e,) in the Roman kalendar, the fifth day of the months January, February, April, June, Auguft, September, November, and December; and the feventh of March, May, July, and Oftober. March, May, July, and Oftober, had lix days in their nones; becaufe thefe alone, in the ancient conftitution of the year by Numa, had 3 i days a-piece, the reft having only 29, and February 30: but when Csefar reformed the year, and made other months contain 3 I days, he did not allot them fix days of nones. NONJURORS, thofe who refufed to take the oaths to government, and who were in confequence nnder certain incapacities, and liable to certain fevere penalties. It can fcarcely be faid that there are any nonjurors now in the kingdom ; and it is well known that all penalties have been removed both from Papifts and Proteftants, formerly of that denomina¬ tion, as well in Scotland as in England. The mem¬ bers of the Epifcopal church of Scotland have long been denominated Nonjurors ; but perhaps they are n.ow called fo improperly, as the ground of their dif¬ ference from the eftablifhment is more on account of ecclefiaftical than political principles. NONIUS (Peter), in Spanifh Nunez, a learned Portuguefe, and one of the ableft mathematicians of the 16th century, was born at Alcacer. He was pre¬ ceptor to Don Henry, king Emmanuel’s fon, and taught the mathematics in the univerlity of Coimbra. He publiffied the following works, by which he gain¬ ed great reputation: 1. Dc arte navigandi. 2. Anno~ tationes in theonas planetarum Purbachii ; which arc greatly efteemed. 3. A treatife De Crepufculis. 4. A treatife on algebra. It is obferved in Furetiere’s dic¬ tionary, that Peter Nonius, in 1530, firft invented the angles of 45 degrees made in every meridian, and that he called them rhumbs in his language, and calculated them by fphcrical triangles. Nonius died in 1577* aged 80. Nonius, the name which was not many years ago given to the common device for fubdividing the arcs of quadrants and other aftronomical inftruments, from the perfuafion that it was invented by Nonius or Nunezt, of whom fome account has been given in the preced¬ ing article. The generality of aftronomers of the piefent age, transferring the honour of the invention from Nunez to Peter Vernier, a native of Tranche Comte, have called this method of divifion by his name. (See Vernier). Mr Adams, however, in his Geometrical and Geographical Effays, has lately ffiowrt that Clevius the Jefuit may difpute the invention with them both. The truth fet ms to be, that Nunez ttart- ed the idea, Clevius improved it, and Vernier carried it to its prefent ftate of perfeftion. The method of Nu¬ nez, deferibed in his treatife De Crepufculis, printed at Liffion 1542, confifts in deferibing within the fame quadrant 45 concentric circles, dividing the outermoft into 90 equal parts, the next within into 89, the next into 88, &c. till the innermoft was divided into 46 only. On a quadrant thus divided the plumb line or index muft crofs one or other of the circles very- near a point of divilion } whence, by computation, the I degrees NOO [99] NOO Ifaniu* degree# and minute* of the arch might be eafily afeer- II tained. This method is alfo deferibed by Nunez in Sound his treatife De arte atque ration* navigmdi, where he —V—'would fain perfuade himfelf, that it was not unknown to Ptolemy. But as the degrees are thus divided very unequally, and as it is very difficult to attain ex* a T of having himfelf gone into the errors of the bifhop of Ypres. His anfwers to r.ll thefe aecufations were fo much to the fatisfadlion of the Pope, that at length his ho- linefs honoured him with the purple in 1695. After this, he vvns in all the congregations, and employed in the molt important affairs ; fo that he had little time to fpend in his fludy, a thing of which he frequently complained to his friends. Upon the death of cardi¬ nal Cafanati, he was made chief library-keeper of the Vatican in 1700; and two years afterwards nomina¬ ted, among others, to reform the calendar : but he died at Rome in 1704 of a dropfy. He was one of the mod learned men in the laft century: his writings abound with erudition, and are very elegantly tinifhed. He was a member of the academy ; whence he affumei the name of Eucrates Agoretico. His works are nu¬ merous, and were publifhed at Verona, in 1729 and 1730, in five volumes folio. NORKOPING, a town of Sweden, in the pro¬ vince of Eaft Gothland, in eafl longitude 15O 30', la¬ titude 58° 20'. Its name fignifies “ the northern mar¬ ket” in the Swedifh language. It hands on the banks of a large river called Motala, which coming from the lake Vetter, falls a little lower into a gulf called Bra- nvtken. It is the largeit and molt populous town in Sweden, next to Stockholm, conveniently fituated near the fen on a navigable river, which brings large veffels up to the middle of the town. There are fome bandfome ftreets, and the houfes in general are neatly built. Some of the churches are worth feeing ; but the greateft curiofity are the famous copper mines, where there is a vaft number of people conftantiy at work. In this article the town carries on a very good trade ; as alfo in feveral other manufaftures, as lea¬ ther, heel, and guns, which they make the bed in Sweden. It covers a large (pace of ground, being ten miles in circumference ; but the houfes are fmall and feat- tered, and the inhabitants do not exceed 10,000. The river Mctala flows through the town, forms a feries of catarafts, and is divided into four principal ftreams, which encircle feveral rocky iflands, covered with houfes and manufa&ories. At the extremity of the town it-is navigable for fmall veflels. Several manufa&ories are eftabhfhed in the town ; 55 fabrics of cloth, which employ 1500 men; 3 fugar-houfes ; 1 of fnuff; 50 mills for giinding corn, which is exported in large quantities ; and a brafs fousdery. A fahnon-fifhery gives employment and riches to many of the inhabi¬ tants. NORMANDY, a province of France, bounded on the north by the Englifh channel; on the eafl by Picardy and the ifle of France ; on the fouth by Perche and Maine, and one part of Bretagne; and en the wed by the ocean. It is about i?5 miles in length, 85 in breadth, and 600 in circumference. It is one of the mod fertile, and brings in the larged revenue of the kingdom. It abounds in all things except wine, but they fupply that defe& by cyder and perry. There are vafl meadows, fat paftures, and the fea yields plenty of fifh. It contains iron, copper, and a great number of rivers and harbours. It carries Vol. XIII. Part I. t 105 1 NOR Norris. on a great trade, is very populous, and comprehends Normans a vab number of towns and villages. It is divided ^ into the Upper and Lower ; the Upper borders upon Picardy, and the Lower upon Bretagne. It contains feve-n dfocefes or bifhoprics, Rouen, Bayeux, Avran- ches, Evreux, Sees, Liiieux, and Coutances, in which they compute 4189 pariihes, and 80 abbeys. The in¬ habitants are ingenious, and capable of underbanding any arts and fciences, but they are chiefly fond of law. The Normans, a people of Denmark and Norway, having entered France under-Rollo, Charles the Sim¬ ple ceded this country to them in 912, which from that time was called Normandy, and contains about 8200 fquare miles. Its chief city is Rouen. Rolio was the fird duke, and held it as a fief of the crown of France, and feveral of his fucceflbrs after him, till William, the feventh duke, conquered England in 1066 : from which time it became a province of Eng¬ land, till it-was loft in the reign of king John, and re¬ united to the crown of France ; but the Englifti ftill keep the iflands on the coafts of Normandy. The principal rivers are the Seine, the Eure, the Aure, the Iton, the Dive, the Andelle, the Rille, the Touque, the Dr6mee, and the Orne : among the. fl aports, the principal are thofe of Dieppe, Havre, Honfleur, Cherbutg, and Granville. Rouen is the principal city. NORMANS, a fierce warlike people of Norway, Denmark, and other parts of Scandinavia. They at different times over-ran and ravaged moft countries in Europe 1 to the refpe&ive hiftories of thofe countries we therefore refer for a fuller account of them, as it is impoffible to enlarge upon particulars in this place without repeating what has been already faid, or may be faid, in different parts of the work. Norman Charatters, a fpecies of writing introduced into England by William I. From fome old manu- feripts the Ncrman writing appears to have been com- pofed of letteis nearly Lombardic. In regal grants, charters, public inftruments, and law proceedings, this charatter was ufed with very little variation from the reign of the Conqueror to that of Edward III. See Wr 1 t i n g . NORRIS, or Noris. See Noris. NORRIS (John), a learned Englifh divine and Pla¬ tonic phllofopher, was born in 161;7 at Collingborne- Kingfton, in Wiltfhire, of which place his father Mr John Norris was then minifter. He bred his fan firil at Winchefter fchool, and afterwards fent him to Ex¬ eter college in Oxford, where he was admitted in 1676 ; but was elefted fellow of All Souls in 1680, foon after he had taken his degree of bachelor of arts. From his firft application to philofophy, Plato became his favourite author ; by degrees he grew deeply ena¬ moured with the beauties of that divine writer, as he thought him; and took an early occafion to communi¬ cate his ideal happinefs to the public, by printing an Englifh tranflation of a rhapfody, under the title of The Pifture of Love unveiled, in 1682. He com¬ menced mafter of arts in 1684, and the fame year opened a correfpondence with that learned myftic di¬ vine Dr Henry More of Chrift’s college in Cambridge. He had alfo a correfpondence with the learned lady Mafham, Dr Cudworth’s daughter, and the ingenious Mrs Aftell. He refided at his college, and had been O ij% N O Norris, North. TX [ 106 ] NOR when he was prefented to lating to the long parliament; The hillory of the * ' ‘ "■ life of Lord Edward North, the firft Baton of the in holy orders five years, the re£ory of Newton StLoe, in Sotnerfetihire, 1689 ; ' upon which occafion he married and refigned his fel- lowfhip. In 1691, his diftinguilhed^ merit procured him the reftory of Bemerton, near Sarum. This li¬ ving, upwards of 2001. a-year, came very feafonably to his growing family ; and was the more acceptable, for the eafinefs of the parochial duty, which gave him leifure to make an addition to his revenues by the h ints of his genius ; the activity of which produced^ large harveft, that continued increafing till 1710. But this activity feems to have become fatal to him ; for^ to¬ wards the latter end of his life, he grew very infirm, and died in 1711, in his 55th year, at Bemerton. Lie was interred in the chancel of that church, where there is a handfome marble monument credited to his memo¬ ry, with this infcription : “ H. S. E. Johannes Norris, pirochise hujus re&or, ubi annos viginti bene Irtuit euros paftorali et hteris vacans, quo in recefiti iibi pofuit late per orbem fparfa ingenii paris ac pietatis monumenta. O.biit an. Dorn. 1711, gratis 54.” _ As to his char after, he had a tinfiure of enthufiafm in his compofiticn, which led him to imbibe the piinciples of the idealifts in philofophy, and the mytlics in theo- logy ; and the whole turn of his poetry fhows, that this enthufiafm alone made him a poet. As an ideal;fi, he oppofed Locke, and adorned Malebranche’s opinion, of feeing all things in God, with all the advantages of flyle and perfpicuity of expreflion. In fhort, his errors, which are harmlefs enough of themfelves, ought to be eafily pardoned, on account of the g '.eral ex¬ cellence of his writings, efpecially upon fubjefts of pra&ieal divinity, wLich are univerfally efteemed. NORTH, one of the four cardinal points of the world ; being that point of the horizon udiich is di- retlly oppofite to the fun in meridian. The north wind is generally accompanied with a confiderabie de¬ gree of cold. It fometimes blows with almoft irrefift- ible fury. It is often mentioned by the claffic authors under the name of Boreasy. which is of GreeK original. See Boreas. North Pole. See Pole. North (Dudley, lord), the third baron of that accomplilhed family, was one of the fined gentlemen in the court of king James ; but in fupporting that chara&er, difupated and gamed away the greateft part of his fortune. In 1645, he appears to have a£ed with the parliament; and was nominated by them to be adminidrator of the admiralty, in conjun&ion with the great earls of Northumberland, Efiex, Warwick, and otheis He lived to the age of 85, the latter part of which he pafied in retirement ; and wrote a fmall folio of mifcelianies, in profe and verfe, under this title, A Fored promifeueus of feveral Seafons Prcdu&ions, in four parts, 1659. North (Dudley, lord), fon of the former, was made knight of the bath in 1616, at the creation of Charles prince of Wales ; and fat in many parliaments, till excluded by the prevailing party in thaf which condemned the king. From that period lord North lived privately in the country, and towards the end of his life entertained himfelf with books, and, as his numerous ifiue required, with economy ; on which he wrote a little traft, called Obfervations and advices economicaly 12mo. His other works are, Paffages re¬ North. family, addreiTed to his tided fon ; and a volume of Effays. North (Francis lord Guildford, lord-keeper of the great feal in the reigns of Charles II. and James II.) was a third fon of the fccond Dudley lord North, baron of Kertling ; and dudied at St John’s college in Cambridge, from whence he removed to the Middle Temple. He acquired French, Italian, Spaniih, and Dutch ; and became not only a good lawyer, but was well verfed in hidoty, mathematics, philofophy, and mufic. He was afterwards made the king’s folicitor- general, and was chofen to reprefent the borough of Lynn in parliament. Fie fucceeded Sir Heneage Finch in the pod of attorney-general ; and lord chief- juftice Vaughan, in the place of lord chief-judice of the common pleas. He was afterwards made keeper of the great feal; and in 16S3 was created a baron, by the title of Lord Gnddford. He died at his houfe at Wroxton in 1685. He wrote a philofophical eflay on mufic ; a paper on the gravitation of fluids, con- fidered in the bladders of iiflies, printed in I.owthorp’s abridgement of the Philofophical TranfaHions; and fome other pieces. North ( Right Hon. Frederick), earl of Guild¬ ford, lord North, lord warden and admiral of the Cinque Ports, governor of Dover cadle, lord lieute¬ nant and cuflos roculorum of Somerfetdiire, chancellor of the univerfity of Oxford, recorder of Gloucefttr and Taunton, an elder brother of the Trinity-houfe* prefident of the Foundling hofpital and of the Afylurtv,. a governor of the Turkey Company atid of the Char¬ ter houfe, K. G. and LL. D. was born April 13. 1732; and married, May 20. 1756, Mifs Ann Speke, an heirefs of the ancient family of Dillington in So~ merfetfnire, by whom he has left two fons and three daughters: the eldeft fon George-Auguftus, born Sept. 11. 1757, and married, Sept. 30. 1785, to Mif» Hobart, fucceeds to the earldom and edates. The late earl fucceeded his father Auguff 4. 1790. Hia-, lordfhip fuccceded the celebrated Mr Charles Townf- end as manager of the houfe of commons and chan-, cellor of the exchequer; and in 1770, on the refig- nation of the duke of Grafton, was made firft lord of the treafury ; in which office he continued until the clofe of the American war, or rather unt/1 the forma¬ tion of the Rockingham miniftry, which began the bufkiefs of peace with the colonies. He was a man- of ftrong mental faculties ; and as an orator, at once commanded attention and enforced conviction : but taking the helm at a time when the king’s party were unpopular, and when it was fuppofed that the late earl of Bute was the great machine by which the ca¬ binet was moved, fo he continued in that Hate of un» popularity until he refigned the feals. During the whole of his premierfhip (and to conduft the helm at that time required uncommonly great abilities) he ftu- dioufly avoided impofing any taxes that fliould mate¬ rially affedl the lower c’afs of people. The luxuries, and not the necefLries, of life were repeated objects of his budget. As a financier, he flood high, even in the opinion of oppofition ; and they were a combi¬ nation of all the great talents in the kingdom : but, fatally wedded to the definitive plan of fubduing the republican NOR [ i North republican fpirit of the Americans, his adminiilratioH 'I ^ will not only Hand marked in the page of hiltory with IMTaec* an wafteof public treafure, but it will appear —- befprinkled with the kindred blood of thoufands of Britifh fubje&s. To the very laft moment he fpoke in the fenate, however, he defended that war; and faid, he was then, as he was formerly, prepared to meet the minuteft inveftigation as to his conduil in that bufi- nefs; which nothing but the unforefeen intervention of France could have prevented from being crowned with faccefs. His lordlhip was one of the firmed and mofl flrenuous fupporters of the conliitution in church and date. He died on the yth of Augud 1792. His recollection he retained to his lad moments : his fa¬ mily, except lord North, who came within a few mi¬ nutes afterwards, were affembled round his bed, and he took leave of them individually. Their grief did not fuffer them to leave the room for feme time after the event; and Lady Caroline Douglas was at lad forced from it. Even Dr Warren, who mud be itrengthened as far as habit can operate againd nature to endure fuch feenes, ran from this, convulfed with forrow. If any extent of fympathy can leffen affliction, this fa¬ mily may find fuch relief; for perhaps no man was ever more generally beloved by all who had accefs to him than the earl of Guildford. We may form an opinion of the edimation the cele¬ brated univerfity of Oxford entertained of their chan¬ cellor while living, by the very great honour they ■paid to his remains. About five o’clock in the after¬ noon of the 15th, the great bell at St Mary’s church at Oxford rang out, which was a iignal that the fune¬ ral procellxon had arrived in the environs of that city. The officers of the univerfity, and the whole body of refident dudents, were previoufly adembled in Mag¬ dalen College, in order to pay fome tribute to the memory of their deceafed chancellor. They joined the proceffion at Magdalen Bridge, and paraded on foot before the hearfe up the high-dreet to Carfax ; from thence down the corn market to St Giles’s church at the town’s end, in a mod folemn manner. Here they halted, and opening to the right and left, the hearfe and other carriages paffed through, the whole univerfity being uncovered. The hearfe and attend¬ ants then proceeded to Banbury, where his Lord- - fhip’s remains were depofited in the family vault. NoRTH-Cape, the mod northerly promontory in Europe, on the coad of Norway. E. Long. 21. o. N. Lat. 78.0. NokTR-Ferry, a fmall village, on the north fide of the Firth of Forth, at the Chieen’s-Ferry paffage. There was here formerly a chapel, ferved by the monks of Dunfermline, and endowed by Robert I. Near it are large granite quarries, which partly fupply London ■with paving dones, and employ many vedels for the conveyance. “ The granite (Mr Pennant fays) lies in perpendicular drata, and above is a reddifh earth, filled with micaceous friable nodules.” NoRiH-Fore/aiid) a cape or promontory of Kent, in the ille of Thanet, four miles ead of Margate. Be¬ tween this and the South-Foreland arc the Downs, through which nil diips pafs that are bound to or from the wed. E. Long. x. 25. N. Lat. 51. 25. North-JVeJi Paffage, a paffage to the Pacific Ocean through Hudfon’s Bay or Davis’s Straits, and which bath been frequently attempted without fuccefs; not- 07 ] N O It withdanding which, many people are dill of opinion North-wed that it is prafticable. Paflage. ^ The idea of a paffage to the Eaft Indies by the "“v - north pole, or through fome opening nearto it, was fuggeded as early as the year 1527. The perfon who had the honour to conceive this idea was Robert Thorne, a merchant of Bridol, who addreffed two pa¬ pers on the fubjeft, the one to king Henry VIII. the other to Dr Ley, ambaffador from that monarch to the emperor Charles V. To remove any objection to the undertaking, which might be drawn from the fuppofed danger, he infills, in his addrefs to the king, upon the great advantages of condant day-light in the polar feas, and the probability of the climate being in thofe regions temperate during the dimmer months. In the paper addrefied to Dr Ley, he obferves that cofmographers may as probably be miilaken in the opinion which they entertain of the polar regions be¬ ing impaffable from extreme cold, as it lias been found they were in fuppofing the countries under the line to be uninhabitable from exceffive heat. “ The poffibility of the paffage was, in confequence of thefe addreffes, very generally fuppofed ; and hi I $57, Sir Martin Forbifher failed to 62° north lati- titude, where he difeovered the draits which have fince bore his name. In 1577, Barne; in a book intit- led the Regiment of the Sea, mentions a north-wed pad fage as one of the five ways to Cathay; and dwells on the mildnefs of the climate, which, from the condant prefence of the fun during dimmer, he imagines mud be found near the pole. In 1578, George Bed, a gentleman who had been with Sir Martin Forbifher in his voyages of difeovery, wrote a very ingenious difeourfe to prove all parts of the world habitable. It does not, however, appear that any voyage was un¬ dertaken, for the exprefs purpofe of attempting to fail to India in a north-weft diredion, till the year 1607, when Henry Hudfon' was fent, at the expence of fome merchants in London, to difeover a paffage by the north pole to Japan and China. He faiKl from Gravefend on the iff of May, and on the 21ft of June fell in with the land to the weftward, in latitude 730, which he named Hold-with-hope. On the 27th he dif¬ eovered Spitfbergen, and met with much ice. The higheft latitude in which he made an obfervation was So® 27'. See Hudson. In March 1609, Jones Poole was fent by Sir Tho¬ mas Smith, and the reft of the MufcOvy company, to make further difeoveries towards the north pole. Af¬ ter great feverity of weather, and much difficulty from ice, lie made the fouth part of Spitfbergen on the 16th of May? and failing along and founding the coad, he made many accurate difeoveries ; but was not in that voyage able to proceed beyond 790 50'. He was again employed (i6ii), in a fmall veffel called the Elifahelh, to attempt the north-weft paffage; but af¬ ter furmounting numberlefs difficulties, and penetra¬ ting to 809 of latitude, he loft his fhip at Spitfber¬ gen. Two voyages, equally unfuccefsful, were made in 1614 and 1615, by Baffin and Fotherby; the latter of whom concludes the account of his difeoveries and dangers, with exhorting the company which employed him not to adventure more than 150 or 200 pounds at moft on yearly voyages to thefe feas. Hitherto nothing h^d been done in this great un¬ dertaking but by private adventurers, fitted out for O 2 the NOR f 10S ] NOR North-weft tne double purpofe of difcovery and prefent advantage; , <>a^a>?e' and the polar regions were fuffered to remain untx- * plored in that dire&ion, from the year 1615 till I773> when the earl of Sandwich, in confequtnce ol an ap¬ plication which had been made to him by the Roy. 1 Society, laid before his majefty a propofal for an ex¬ pedition to try how far navigation is practicable to¬ wards the north pole. Upon receiving this propofal, his majefty was pleafed to direCt that the voyage ihouid he immediately undertaken, with every affiftance that could contribute to its fuccefs. Accordingly, the Race- horfe and Carcafs bombs were fitted out for the pur pofe, and the command of the expedition given to Captain Phipps, now Lord Mulgrave. His Lord fhip’s inllrudtions were to proceed up to the pole, or as far towards it as pofhble, and as nearly upon a me ridian as the ice or other obifruCtions fhould admit; and during the courfe of the voyage, to make fuch obfervations of every kind as might be ufeful to navi¬ gation, or tend to the promotion of natural know¬ ledge. A. very accurate account of this voyage was publifhed by his Lordlhip in 1774. He had, by ex¬ erting all the powers of a Ikilful and intrepid featnan, forced his way, on the ill of Augult, to 8o° 37' ; but could proceed no farther, as he was there oppofed by one continued plain of fmooth unbroken ice, bounded only by the horizon. Many other attempts have been made to difeover this paflage, by failing along the weftem coaft of Ame¬ rica ; but hitherto none of them has been crowned with fuecefs. So early as 1579, Sir Francis Drake allured queen Elifabeth that he had failed feme leagues up the {traits of Anian (feeAMAN), and difeovered New Albion, to the north of Calefornia; but the llrait is now known to have no exigence ; and Drake’s real difeoveries were not improved. In 1630, king Cha. I. fent captain Luke Fox in one of his pinnaces to at¬ tempt the paffage ; but of his proceedings we know nothing, but that he reached port Nelfon in Hudfon’s bay, \w.iere he found fome remains of former naviga¬ tors. Next year captain James was fitted out by the merchants of Briftol for the fame purpofe. James was one of the ableft navigators that ever failed from England or any other country ; and his voyages to the north were printed ia 1633. After all the expe¬ riments he had made, he concluded that there was no fuch paflage ; or if there be, he affirmed that the difco¬ very of it would not be attended with chofe advantages which are commonly expedled. His reafons, how¬ ever, for thefe opinions have been anfwered, and ma¬ ny fubfequent attempts have been made to perform what he thought impeffibie. The arguments for a north-well palfage were fo plaufible, that, in 1744, an aft of parliament was palled to encourage the difcove¬ ry of it. Among many others, captain Cook attempted the difcovery in vain, and thence adopted James’s opi¬ nion. (See Cook's Difcoverits, h 103.) This cele¬ brated navigator, after having proceeded northwards to the we Hern extremity of America, and afeertained the proximity ol the two great continents of Alia and America, returned to the Sandwich ifiands, firmly perfuaded of the impracticability of a paflage in that hemifphere from the Atlantic into the Pacific Ocean, fithe? by an eallern or a wellern courfe. Later voyagers, however, have pretended to deted fome errors in Cook’s difeoveries *, and the author of No th-eaft a fmall traCt, intitled /In authentic htatement of all the Fads relative to Nootka-Souncl, goes a great way to ” » J make the difcovery not yet hopelefs. in nis account cf the expedition under the direction of Meflrs Etches, he fays, that “ one of the firlt difeoveries made by thefe Ihips *as, that what was by the immortal Cook laid down as a continuation of the north-weft continent of America, and lying between the northern latitudes of 48 and 57, is on the contrary an extenfive duller of unexplored Hands inhabited by numerous tribes of friendly Indians, with whom a regular connection was formed.” Thefe Hands they difeovered, contrary to the af- fertion of captain Cook, to conceal the opening of a vail inland fca, or archipelago, in all probability equal to the Mediterranean or Baltic feas, and divid¬ ing tire great northern continent of America. The Princefs Royal penetrated fome hundred leagues among them, in a north-eaft courfe, to within 200 leagues of Hudfon’s houfe, but had not then an opportunity to explore the extreme termination of that archipelago, their commercial concerns obliging them to return to the China market ; but the commanders had the ftrongeft reafons to believe, had time favoured their furvey, that they Ihouid have been able to difeover the long-wilhed for palfage between the Atlantic and South Sea. They conceived, that Ihould neither the inland aim of the fea through which the Princels Royal penetrated, nor a large ftrait named Sir Charles Middleton’s, about three degrees to the fquthward, be found to reach acrofs the continent, yet that the land barrier mull be very inconfiderable ; and that at the extremity of this bay a pradlicable paflage, either by rivers or lakes, will, by perftverance, be found ter¬ minating towards Hudfon’s bay. Upon the whole, however, it appears to us extremely doubtful whether there be fuch a pallage ; but it is much more likely to be difeovered, if difeovered at all, by the progreffive advances of mercantile enterprife than by any immediate expedition undertaken for that purpofe. North-EoJI Paffage, a paflage to the Eaft Indies along the northern coafts of Afia, which, like the former, hath frequently been attempted, but hitherto without fuccefs. The firft attempt was made in 1 i 53 by Sir Hugh Willoughby, who commanded three (hips. He departed from the 1 hames and failed to the North Cape, where one of his Ihips left him, and returned home. The other two ffiips being feparated. Sir Hugh proceeded farther northward, and difeover¬ ed that part of Greenland which the Dutch have finee called Spiazberg; but the feverity of the cold obliging him to return to the fouthward, he wras for¬ ced, by bad weather, into the river Arzina, in Mus¬ covite Lapland, where, not being able to come out, he was found the next fpring frozen to death, with all his (hip’s company ; having the notes of his voyage and his laft will lying before him, whereby it appear¬ ed that he lived till January. But Richard Chancel¬ lor, in the thira ffiip, with better fuccefs, in the mean¬ while entered Wardhuys, where he waited fome time for his companions to no purpofe ; uncertain whether they were loll, or driven farther by ftrefs of weather. He held a council on what he Ihouid do j whether to return NOR r ICO ] NOR |n rth-eafl return, or purfuc his voyage. Whatever danger might Paffage. jn Isft, every one agreed to it, that they miglrt r * not feem to have lefs courage tixan their captain. They therefore fet fail, and in a few days found them- felves in a fea where they could no longer perceive any night. This (hip, wandering a'.Out, entered foon af¬ ter into a large bay or gulf. Here they cad anchor, in fight of land ; and while they were examining the coaft, they difeovered a fifhing boat. Chancellor getting into his fioop, went towards it ; but the filher- men took to flight. He followed,and, overtaking them, (bowed them fuch civilities as conciliated their affec¬ tions to him ; and they carried him to the place where now is the famous port of St Michael the Archangel. Thefe people immediately fpread through all the cqafts an account of the arrival of tbofe fl rangers; and people came from feveral parts to fee them, and alk them queftions. 'They, in their turn, examined the others, arid found that the country they were in was Ruflia, governed by the mighty Emperor John Balllowitz. Chancellor from Archangel travelled on fledges to the Czar at Mofcow; from whom, overjoyed at the profpert of opening a maritime commerce with Eu¬ rope, he obtained privileges for the Englifh merchants, and letters to King Edward VI. who was not, how¬ ever, alive to receive them. In 1581;, Mr John Davis in two barks difeovered Cape Defolation, which is fuppofed to be part of Greenland ; and two years after advanced as far as Lat. 72°, where he difeovered the (trait which itiil bears his name To enumerate all the attempts which have been made to difeover a north-call paffage, would fwell the article to very little purpofe. The Englifh, Dutch, and Danes, have all attempted it without fuc- cefs. The lait voyage from England for this pur¬ pofe was made in 1676, under the patronage of the duke of York. That unfortunate prince, who v/as on all occafions earned for the promotion of com¬ merce, and the Lord Berkeley, See. fitted out a (hip, commanded by Captain Wood, for an att-mpt once more to find a Rorth-eafl paffage to India, accom¬ panied with a (hip of the king’s. They were en¬ couraged to this attempt, after it had been fo long dtfpaired of, by feveral new reports and reafonings : dome of which feem not to have been very well grounded — As, “ 1. On the coad of Corea, near Japan, whales had been found with Englifh and Dutch harpoons (tick¬ ing in them. This is no infallible proof that (hips could get thither by a north-ead pailage, although whales might. “ 2. That, 20 years before, fome Dutchmen had failed within one degree of the north pole, and found it temperate weather there : and that therefore Wil¬ liam Barents, the Dutch navigator who wintered at Nova Zembla in the year 1596, fhould have failed further to the north before turning eadward ; in which cafe, faid they, he would not have found fo much ob- ftrudtion from the ice. “ 3. That two Dutch (hips had lately failed 300 leagues to the eadward of Nova Zembla; but their Ead India company had llifled that defign, as againd their intereil:—and fuch like other airy reports. But this attempt proved very unfortunate. They doubled the North Cape, and came among much ice and drift wood, in 76’ of north latitude, deering to the coad Northamp- of Nova Zembla, where the king’s (hip Itruck upon ton J the rocks, and was foon beat to pieces ; and Captain ^ Wood returned home with an opinion, “ that fuch a paffage was utterly impracticable, and that Nova Zembla is a part of the continent of Greenland.” Thefe paffages, however, are not yet deemed im- pradticable by all. The Count de Buffon holds it for certain, that there is a paffage from Europe to China by the north fea. The reafon why it has been fo of¬ ten attempted in vain, he thinks, is, that fear pre¬ vented the undeitakt-rs from keeping at a fuificient diilance from land, and from approaching the pole, which they probably imagined to be an immenfe rock. Hence he affirms, that if any farther attempts be made to find a paffage to China and Japan by the north Teas, it will be neceffary to keep at a diffance from the land and the ice ; to deer directly towards the pole ; and to explore the mod open feas, where unqueffionably, fays he, there is little or no ice. This opinion has been lately revived by the Hon. Daines Barrington, who fays, that if the padage be attempted by the pole itfelf, he has very little doubt of its being accomplifhed. See North- Polf. NORTHAMPTON, a town in England, capital of a county of the fame name, (Ituated in W. Long, o. 55. N. Lat. 52. 15. According to Camden, it was formerly called North-afandon, from its (ituation to the north of the river Nen, called anciently Aufona, by which and another leffer river it is almoll inclofed. Dr Gibfon fays, that the ancient Saxon annals called both it and Southampton (imply Hamton ; and after¬ wards, to didinguifh them, called the one, from its fitu- ation, Southamton, and the other Northamton ; but never North-afandon. i hough it does not appear to be a place of very great antiquity, nor to have emerged from obfeurity till after the conqued, it has.fent mem¬ bers to parliament lince the reign of Edward I. and being in the heart of the kingdom, feveral parliaments have been held at it. There was alfo a caille, and a church dedicated to St Andrew, built by Simon dc Sanclo Licio, commonly called Senlez, the lird earl of Northampton of that name. It is faid to have been burnt down during the Danilh depredations,; but in the reign of St Edward it appears to have been a confiderable place. It was befieged by the barons in their war with King John ; at which time that mi¬ litary work called Hunjhill, is fuppofed to have been raifed. In the time of Henry HI. it lided with the barons, when it was btfieged and taken by the king. Here the bloody battle w*s fought in which Henry VI. was taken prifonef. It was entirely confumed by a moll dreadful fire in 1675 ; yet, by the help of liberal contributions from all parts of the country, it hath fo recovered itfelf, that it is now one of the neatefl: and bell-built towns of the kingdom. Among the pub¬ lic buikffngs, which are all lofty, the mod remarkable are the church called ,dll-hallows (which dands at the meeting of four fpacious ftreets), the feffions and aflize houfe, and the George-Inn, which belongs to the poor of the town. A county hofpital or infir¬ mary has been lately built here, after the manner of thofe of Bath, London, Bridol, &c. It has a con¬ fiderable manufadlure of (hoes and dockings; and its fairs are noted for horfes both for draught and faddle; befides,. NOR •NtWthanip ton, Wortham- tonfliite. t no ] NOR befides, it Is a great thoroughfare for the north and weft roads. It was formerly walled, and had feven churches within and two without. The horfe-market is reckoned to exceed all others in the kingdom, it being deemed the centre of all its horfe-markets and horfe-fairs, both for faddle and harnefs, and the chief rendezvous of the jockies both from York and Lon¬ don. Its principal manufacture is fhoes, of which great numbers are fent beyond fea ; and the next to that, ftockings and lace, as we have hinted at above. It is the richer and more populous, by being a tho¬ roughfare both in the north and weft roads ; but, be¬ ing 80 miles from the fea, it can have no commerce by navigation. The walls of this town were above two miles in compafs. It is fuppofed to contain about 1083 houfes, and 5200 inhabitants. It had formerly a nunnery in the neighbouring meadows, with feveral other monafteries ; and of its very old caftle on the weft fide of the town, a fmall part of the ruins are Hill to be feen. Some difeontented •fcholars came hither from Oxford and Cambridge, about the.end of the reign of Henry III. and, with the king’s leave, profecuted their ftudies here acade¬ mically for three years; during which there was the face of an univerlity, till it was put a ftop to by ex- prefs prohibition, becaufe it was a damage to both univerlities. The public horfe-races are on a neigh¬ bouring down, called Pye-Leys. In and about the town are abundance ef cherry-gardens. Within half a mile of the town is one of the croffes ere&ed by King Edward I. in memory of his Queen Eleanor, whofe corpfe was refted there in its way to Weftmin- fter. On the north fide of the river, near that crofs, ■many Roman coins have been ploughed up. At Guilefborough, north-weft of Northampton, arc to be feen the veih'ges-of a Roman camp, the fituation of which is the morfe remarkable, as lying between the Nen and the Avon, the only pafs from the north to the fouth parts of England not intercepted by any river. This camp was fecured orjy by a fingle intrenchment, which was, however, very broad and deep. NoRTHAMPTOvsHiaE, a county of England, is fitua- ted in the very heart of the kingdom : bounded on the eaft by the counties of Bedford and Huntingdon; .-on the fouth by thofc of Buckingham and Oxford ; en the weft by Warwick (hire ; and on the north by the counties of Leiceftcr, Rutland, and Lincoln, which are feparated from it by the Leffer Avon, and the Welland. Its greateft length is about £0 miles, its greateft breadth about 20, and its circumference about 130. It contains 33oparifhes. There are in it one city, 11 market-towns, 25,000 houfes, and 150,000 inhabitants. Nine members are returned to parlia¬ ment for this county, viz. two knights for the (hire, twd for the city of Peterborough, two for each of the towns of Northampton and Brockly, and one for Higham Ferrers. It lies in the Mid-land circuit, and in the dioeefe of Peterborough. As this county is -dry, well cultivated, free from mnrfhes, except the fens about Peterborough, in the centre of the kingdom, and of courfe at a rli fiance from the fea, it enjoys a very pure and wholefome air. In confequence of this it is very populous, and fo full of towns and churches, *hat 30 fpires or fteeples may be feen in many places at one view ; and even in the fens, the inhabitants Nonbamp. feem to enjoy a good ftate of health, and to be little ten affe&ed by the water which frequently overflows their II grounds, efpecrally in winter, but is never fuffered to Northern remain long upon it. Its foil is exceeding fertile both , , in corn and pafturagc; but it labours under a ' fcarcity of fuel, as it doth not produce much wood, and, by lying at a diftance from the fea, can¬ not be eafily fupplied with coal. Its commodities, befides corn, are (beep, wool, black cattle, and fait- petre ; and its manufactures are ferges, tammies, (bal¬ loons, boots, and (hoes. Befidcs many lefl'er brooks and ftreams, it is well watered by the rivers Nen, Wel¬ land, Oufe, and Learn ; the three firft of which are large, and for the mofi part navigable. NORTHAMPTON, a county of north America, in Virginia, forming the fouth part of the peninfula on the eaftern coatt of Virginia. NORTH rocks,(otherwife called St Patrick's rods, from a feat of Hone amongll them called St Patrick's chair, whence the rocks have taken this fecond name'; fituated in the harbour of Donaghadee, in the countv of Down, and province of Ulfier, in Ireland. From north to fouth they are about two thirds of a league, between which is clean good ground.- But care muft be taken of the fouth rock, on which many fliips have perifhed : for it is overflowed by every tide, and no crew can fave their lives if the wind blows high. This rock ftands a full mile from the fliore. NORTH SbA. See North Ska. NORTHERN lights, the fame with aurora borealis, under which article we have given a co- pidus account of this phenomenon, and of the fup¬ pofed caufes of it. Natural fcience, however, does not arrive at perfection at once, and it is well if it does h after trials repeated for years with care and accuracy. How far the caufes that have been affigned for this appearance will account for it, or whether they will be able to remove all difficulties, it is not for us to determine; but it is the part of philofophers to hear all fides, and to attend with patient affiduity to every hypothefis, rejecting or receiving as reafon, after tlie the ftriCleft inveftigation, (hall feem to favour the one fide or the other. Wifhing to lay before our readers every thing important either in fcience or in litera¬ ture, we cannot let pafs the opportunity which the prefent article affords us, of mentioning an hypothe¬ fis which DoCtor Stearns, an American, formed, about the year 1788, to account for the appearances called aurora borealis, and aurora aujlralis. For this laft, fee Aurora Borealis, 003. DoCtor Stearns fuppofes that thefe phenomena ori¬ ginate from aqueous, nitrous, fulphureous, bituminous, and other exhalations, from the fumes of various kinds of earths or other minerals, vegetables, animals, fires, volcanoes, 3cc. Thefe, he thinks, become rarefied, and being charged with eleCtrical fluid, become fpe- cifically lighter than the circumambient ah: hence, of couife, they afeend; and being elevated to the upper regions of the air and driven by the winds from warm¬ er to colder climates, the cold makes them combine and ftiffen. When they are afterwards agitated by different currents of air, they fparkle and crackle like the hairs of cats and other animals when ftiffened with cold. This corufcation in quite cold atmo- fpberca* Jortfinm- berland. NOR [ fplicres, and in thofe which are more temperate, ap¬ pears in ditFerent pofitions in the horizon, zenith, or otherwife, according to the fituation of the fpeaator, and the pofition of the elevated exhalations. 1 he difference of colours the Dodor fuppofes to anfe from the different qualities of the articles combined, thofe of the moll inflammable nature Ihining with the great- eft hiftre. ^ /. .• i The Doftor likewife tries to account for Wide lights not appearing, or but feldom appearing, in ancient times. The atmofphere, he thinks, was not impreg¬ nated with materials proper to produce_ them. He imagines that the increafed confumption of fuel, in America in particular, the burning of volcanoes, and the approach of Hazing liars, whofe atmofpheres have been fo expanded by the fun’s heat that part of them have fallen into the earth’s atmofphere, and commu¬ nicated to it new matter, have fo changed and pre¬ pared our air, that whenever its confidence is proper, then, if the light of the fun aqd moon is not too powerful, the aurora borealis will appear. 1 NORTHUMBERLAND, the moll northerly county of England, and formerly a diftinil kingdom, is hounded on the north and weft by the river Tweed, which divides it from Scotland, the Cheviot-hills, and part of Cumberland; wafhed on the call by the Ger¬ man Ocean ; and feparated from Durham on the fouth by the rivers Tyne and Derwent. This county, which gives the title of dule to a nobleman who mar¬ ried the daughter of Algernoon duke ol Somerfet, whofe mother was heirefs of the Piercy family, ex¬ tends about 66 miles in length from north to foutn, and about 47 in breadth from eaft to weft. It is remarkably populous, containing 12 market-towns, 280 Milages, and 460 parilhes. The face of the country, efpecially towards the well, is roughened with huge mountains, the moil remarkable of which are the Cheviot hills, and the liigh ridge called Ridefdale; but the lands are level towards the fea-fide and the borders or Durham. The climate, like that of every other mountainous country in the neighbourhood of the fca, is moift and difagreeable: the air, however, is pure and healthy, as being well ventilated by breezes and ftrong gales of wind; and in winter mitigated by the warm vapours from the two fcas, the Irilh and the German Ocean, between which it is fituated. 1 he foil varies in different parts of the county. Among the hills it is barren ; though it affords good pafture for fheep, which cover thofe mountains. The low country, when properly cultivated, produces plenty of wneat, and all forts of grain ; and great part of it is laid out in meadow-lands and rich enclofures. Northumber¬ land is well watered with many rivers, rivulets, and fountains : its greateft rivers are the Tweed and the Tyne. The Tyne is compofed of two ftreams called i-'bvth and North Tyre : the firfl rifes on the verge of Cumberland, near Alfton-Moor ; enters Northumber¬ land, running north to Haltwefel; then bends eafterly, and receiving the two fmall rivers Eaft and Weft Alon, tmites above Hexham with the other branch, taking its rife at a mountain called Fme-head in the weftern part of the county, thence called Tine-dale; is fwelled in its courfe by the little river Shele ; joins the Read near Billingham ; and running in a diredt line to the Jbuth-eaft, is united with the fouthern Tyne, forming in ] NOR a large river that waffles NewcafUe, and falls into the NurumKa- German Ocean near Tin mouth. , In all probability the mountains of Northumberland contain lead-ore and other mineralized metals in their bowels, as they in all refpedls refemble thofe parts of Wales and Scotland where lead mines have been found and profecuted. Perhaps the inhabitants are diverted from inquiries of this nature, by the certain profits and con if ant employment they enjoy in working the coal pits, with which this county abounds, 'i he city of London, and the greatetl part of England, are {applied with fuel from thefe ftcres of Northumber¬ land, which are inexhauflible, enrich the proprietors, and employ an incredible number of hands and flap¬ ping. About 658,858 chaldrons are annually fhipped for London. There are no natural w&ods of any confequence in this county ; but many plantations belonging to the feats of noblemen and gentlemen, of which here is a. great number. As for pot-herbs, roots, falading, and every article of the kitchen-garden and orchard,, they are here raifed in great plenty by the ufual means of cultivation ; as are alfo the fruits of more delicate flavour, fuch as the apricot, peach, and nec¬ tarine. The fpontaneous fruits it produces in com¬ mon with other parts of Great Britain, are the crab- apple, the floe or bullace, the hazel-nut, the acorn, hips, and haws, with the berries of the bramble, the juniper, wood-flrawberries, cranberries, and bil¬ berries. Northumberland raifes a good number of excellent horfes and black cattle, and affords pafture for nume¬ rous flocks of fheep ; both the cattle and flieep are of a large breed, but the wool is coarfer than that which- the more fouthern counties produce. The hills and mountains abound with a variety of game, fuch as red deer, foxes, hares, rabbits, heathcock, groufe, par- 'tridge, quail, plover, teal, and woodcock : indeed, this, is counted one of the heft fporting counties in Great Britain. The fea and rivers are well flocked with fifh; efpecially the Tweed, in which a vafl number of fal- mon is caught and carried to Tinmouth, where being pickled, they are conveyed by fea to London, and fold under the name of Ncnncajlle Salmon. The Northumbrians were anciently feigmatized as a favage, barbarous people, addidled to cruelty, and in¬ ured to rapine. The truth is, before the union of the two crowns of England and Scotland', the borderers on each fide were ext$emdy licentious and ungovernable., trained up to war from their infancy, and habituated' to plunder by the mutual incurfions made into each kingdom ; incurfions which neither truce nor treaty could totally prevent. People of 3 pacific difpefition, who propofed to earn their livlihood by agriculture, would not on any terms remain in a country expofed to the firfl violence of a bold and defperate enemy ; therefore the lands lay uncultivated, and in a great meafure deferted by every- body but lawlefs adventu¬ rers, who fubfifted by theft and rapine. There was ft trail. 50 miles in length and 6 in breadth, between Berwick and Carlifle, known‘by the name of the Z)e- batealk Land, to which both nations laid claim, though it belonged to neither; and this was occupied by a fet of banditti who plundered on each fide, and what they ftcle in one kingdom, they fold openly in the other ; nay. NOR *b'rt^Ud'* na^’ they WerC ^exterous ,n t^e'r occupation, that Northwick ^ of hot bread applied to the horns of the ■ t— cattle which they ftole, they twilled them in fiich a manner, that, when the right owners faw them in the market, they did not know their own property. Wardens were appointed to guard the marches or borders in each kingdom ; and thefe offices were al¬ ways conferred on noblemen of the firft character for influence, valour, and integrity. The Englifh border was divided into three marches, called the ei/?, we/?, and middle marches ; the gentlemen of the country were conflituted deputy-wardens, who held march courts, regulated the watches, difeiplined the militia, and took meafures for affiembling them in arms at the firft alarm : but in the time of peace between the two nations, they were chiefly employed in fuppreffing the infolence and rapine of the borderers. Since the union of the crowns, however, Northumberland its to¬ tally changed, both with refpeft to the improvement of the lands, and the reformation of the inhabitants. The grounds, being now fecure from incurfion and infult, are fettled bv creditable farmers, and cultivated like other parts of the kingdom. As hoftilities have Jong ceafed, the people have forgot the ufe of arms, and exercifed themfelves in the more eligible avoca¬ tions of peace; in breeding fheep and cattle, manuring the grounds, working at the coal-pits, and in different branches of commerce and manufaflure. In their perfons they are generally tall, ftrong, bold, hardy, and freffi-coloured ; and though lefs unpoliffied than their anceftors, not quite fo civilifed as their fouthern neighbours. The commonalty are well fed, lodgred, and cloathed; and all of them remarkably diftinguiffied by a kind of Jhiblokth or auhurle, being a particular way of pronouncing the letter R, as if they hawked it up from the wind-pipe, like the cawing of rooks, in other refpedls, the language they fpeak is an uncouth mixture of the Englifh and Scottifh dialeffs. There is no material diftin&ion between the fafhionable people of Northumberland and thofe of the fame rank in other pens of the kingdom : the fame form of education will produce the fame effetts in oil coun¬ tries. The gentlemen of Northumberland, however, are remarkable for their courage, hofpitality, and hard drinking. The number of inhabitants are reckoned 126,400, of houfes 22,740. A great number of Roman monuments have been found in this county ; but the nsoft remarkable curio- frty of that kind confifts in the remains of Hadrian’s valium and the wall of Severus. See Adrian now (a), and Sr nerds ’s Wall. The mod noted towns in Nothumberland, areNew- caftle, Morpeth, Alnwick, Berwick, Hexham, and North Shields. It fends two members to parlia¬ ment. NORTHWICK, a fmall town of Chefnire, long celebrated for its rock-falt and brine pits. The ftra- tum of fait lies about 40 yards deep ; and iome of them are hollowed into the form of a temple. The defeent is through a dome, the roof fupported by rows of pillars about two yards thick, and feveral in height ; and when illuminated with a fuffieient num¬ ber of candles, they make a moll‘magnificent appear¬ ance. Above the fait is a bed of whitilh clay (Argil- la caru/a-cinerea), ufed in making the Liverpool earth* N9 243. NOR en-ware ; and in the fame place is alfo dug a good Norton, deal of the gypfum, or plafter-ftonc. The feffil fait is I! generally yellow, and femipellucid, fometimes debafed ^0:way. with a dull greenilh earth, and is often found, but in fmall quantities, quite clear, and colourlefs. The town is fituated near the river Dane, and is tolerably handfome : it has a market on Fridays. It is #0 miles nortb-eaft of Chefter, and 173 north-well of London. W. Long. 2. 36. N. Lat. 5 3. 16 NORTON, in Chelhire, a good modern alms-houfe, founded by P—y Brook, Efq; on the file of a priory of canons regular of St Augulline, founded by Wil¬ liam, fon of Nigellus, A. D. 113 >, who did not live to complete his defign ; for Eullace de Burgavillc granted to Hugh De Catherine piftures for too Iheep, in cafe he finilhed the church in all refpefls con¬ formable to the intent of the founders. It was*granted- afterwards to R. Brooke, Efq. NORTON’S sound, was difeovered in capt. Cook’s lall voyage, and was fo named in honour of Sir Fletcher Norton (Lord Grantley), a near relation of Mr, after¬ wards Dr, King. It extends as far as N. Lat. 64° 5 There is no good Ration for fhips, nor even a tolerable harbour in all the found. Mr King, on his landing here, difeerned many fpacious valleys, with rivers flowing through them, well wooded, and bounded with hills of a moderate height. One of the rivers towards the north-well feemed to be confiderable ; and he was inclined to fuppofe, from its direflion, that it dif- charged itfelf into the fea from the head of the bay. Some of his people, penetrating beyond this into the country, found the trees to be of a larger fixe the further they proceeded. E. Lon. 197. 13. N. Lat. 64.31. NORWAY, a country of Europe (for the map fee Denmark), lying between the 57th and yzd degrees of north latitude, and between the 5th and 3111 degrees of longitude call from London ; ex¬ tending in length about 1000 miles, in a direft line from Lindefnaes, in the diocefe-of Chrillianfand, to the North Cape, at the extremity of Finmark. Its breadth, from the frontiers of Sweden wellward to Cape Statt, may amount to about 300 miles ; but from thence the country becomes gradually narrower towards the north. On the fouth it is bounded by the Schagen rock, or Categate, the entrance into the Baltic ; on the call it is divided from Sweden by a long ridge of high mountains ; and on the well and north it is waflied by the northern ocean. In the fouthern part of Norway, the country is craggy, ab¬ rupt, and mountainous, diverfified fometimes with fer¬ tile and even delightful fpots. In thefe refpefb it re- fembles Switzerland : the profpe&s and the meteoro¬ logical phenomena feem to be very fimilar. The range of the thermometer is of great extent; in the fum- mer having rifen to 88°, and in the winter fallen to —40°: in general it is between So^and —220. Refpecling the population of Norway it is difficult to attain to certainty. An author of fome note (Coxe) feema to think they amount to 7 50,000; but he appears to have over-rated them confiderably. The Norwegian peafants are free, well-clothed, well- lodged, Ipirited, active, frank, open, and undaunted. They are faid to have a very confiderable refemblance to the pe&fants of Switzerland. The foil is too thin 4 for [ 1 Norway. oxe s :U* Tra. NOR [ > i for the plough: corn is therefore obtained from the neighbouring ftates ; and the chief employment of the peafants of Norway is grazing. The following e,x- traft from Mr Coxe, being a defcription of the fcene near Chriftiana, is not betide our purpofe, and may not perhaps be difagreeable to our readers. “ As we approached Chriftiana, the country was more wild and hilly, but ft ill very fertile and agree¬ able ; and about two miles from the town we came to the top of a mountain, and burft upon as fine a view as ever I beheld. From the point on which we flood in raptures, the grounds laid out in rich enclofures, gradually floped to the fea ; below us appeared Chriftiana, fituated at the extremity of an extenfive and fertile valley, forming a femicircular bend along the ftiore of a moil beautiful bay, which, being inclo- fed by hills, uplands, and forefts, had the appearance of a large lake. Behind, before, and around, the in¬ land mountains of Norway rofe on mountains covered with dark forefts of pines and fir, the inexhauftible riches of the north. The moft diftant fummits were caped with eternal fnow. From the glow of the at- mofpherc, the warmth of the weather, the variety of the produdtions, and the mild beauties of the adjacent fi enery, I could fcarcely believe that I was nearly in the 6oth degree of northern latitude.” The coaft of Norway, extending above 300 leagues, js ftudded with a multitude of fmall ifhnds, affording habitation to fiftiermen and pilots, and pafture to a few cattle. They form an infinite number of narrow channels, and a natural barrier of rocks, which ren¬ ders Norway inacc.rffxble to the naval power of its ene¬ mies. Attempts of this kind are the more dangerous, as the fhore is generally bold, fteep, and impending ; fo that clofetothe rocks the depth of the fea amounts to 100, zoo, or 300 fathoms. The perils of the north fea are moreover increafed by fudden ftorms, funk rocks, violent currents, and dreadful whirlpools. The moft remarkable vortex on this coaft is called Mijhoe- Jlrom, from the fmall ifland Mofkoe, belonging to the diftridt of Lofoden in the province of Nordland. In time of flood, the ftream runs up between Lofoden and Moflcoe with the moft boifterous rapidity; but in its ebb to the fca, it roars like a thoufand cataradts, fo as to be heard at the diftance of many leagues. The furface exhibits different vortices ; and if in one of thefe any (hip or veffel is abforbed, it is whirled down to the bottom, and dallied in pieces againft the rocks. *j hefe violent whirlpools continue without intervals, except for a quarter of an hour, at high and low wa¬ ter, in calm weather; for tlie boiling gradually returns as the flood or ebb advances. When its fury is height¬ ened by a ftorm, no veffel ought to venture within a leasme of it. W hales have been frequently abforbed within the vortex, and howled and bellowed hideoufly in their fruitlefs endeavours to difengage themfelvcs. A bear, in attempting to fwim from Lofoden to Mof¬ koe, was once hutried into this whirlpool, from whence he ftruggled in vain for deliverance, roaring fo loud as to be heard on fliore; but, notwithftanding all his efforts, he was borne down and deftroyed. Large trees being abforbed by the current, are fucked down, and rife again all fliattcred into fplinters. I here are three vortices of the fame kind near the iilands of Ferroe. Von. XIII. Part I. 3 1 NOR Norway is divided into the four governments of Xo-vr±Y. Aggerhus, Bergen, Drontheim, and Wardhus, be- ~Jr~y " fides that of Bahus, which is now fubjedt to Sweden, The province ©f Aggerhus comprehends the fouth-eaft part of Norway, extending in length about 300 miles. Its chief towns are Chriftiana, the fee of a bifliop, fuffragan to the metropolitan fee of Drontheim, where the fovereign court of juftice is held, in prefence of the viceroy and the governor of the province ; A g¬ gerhus, about 15 miles to the fouth-weft of Chriftia- nia; Frederickfhall or Frederickftadt, in the fiege of which Charles XII. of Sweden loft his life ; Saltz- berg, Tonfberg, Allcen, Hammar, and Hollen. The government of Bergen lies in the moft fouther- ly and wefterly part of Norway, including the city of the fame name, which is an epifcopal fee, and a place of confiderable trade; and Staff-hanger, fituated in the bay of Buckenfior, about 80 miles to the fouth- ward of Bergen. The third province, called Dron- thcim or Tronthelm^ extends about $co miles along the coaft ; and is but thinly peopled. The chief town Drontheim, feated on a little gulph at the mouth of the river Nider, Is the only metropolitan fee in Nor¬ way ; and carries on a confiderable trade in mads, deals, tar, copper, and iron. Leetftrand, Stronden, Scoerdale, Opdal, Romfdael, and Solendael, are like- wife places of feme traffic. The northern divifion of Drontheim, called the , ub-government of Solten, com¬ prehends the towns Melanger and Scheen. The province of Wardhus, extending to the North Cape, and including the ifiands, is divided into two parts ; namely, Finmark and Norwegian Lapland. The chief town, which is very inconfiderable, ftands upon an ifland called IVard, from whence the place and the government derive their name. The province of Ba¬ hus, though now yielded to the Swedes, is reckoned part of Norway, being a narrow track of land, about 90 miles in length, lying on the coaft of the Categate. The great chain of Norway mountains, running from north to fouth, called indifferently Rudfield, Sude- fe/d, Sharsfield, and Scoreberg, is known in different parts by other appellations; fuch as Dofrefield, Lams- feld, Sagnefcld, Fdefcld, Halnefield, liar dangerfiddy Joklfield. Byglfield, Hicklefeld, and Hangfdd. The height and breadth of this extenfive chain likewife vary in different parts. To pals the mountain Har- danger, a man mull travel about 70 Englilh miles, whereas Filefield may be about 50 over. This laft rifes about two miles and a half in perpendicular height ; but Dofrefitkl is counted the higheft moun¬ tain of Norway, if not of Europe. The river Drivane winds along the fide of it: in a ferpentine courfe, fo as to be met nine times by thofe who travel the winter- road to the other fide of the chain. The bridges are thrown over roaring cataradls, and but indifferently faftened to the fteep rocks on either fide ; fo that the whole exhibits a very dreadful appearance, fufficient to deter the traveller from hazarding fuch a dangerous paffage ; for which reafon, people generally choofe the road over Filefield, which is much more tedious. This, however, is the poft-road ufed by the king’s carriages. The way is dillinguilhed by polls fixed at the diftance of 200 paces from each other, that, in fnowy or dark weather, the traveller may not be be- I1 wildered. NOR Norway, wildered. For the convenience of reding and refrefh* ““’■’■v'""""' ing, there are two mountain-ftoves or houfes maintain¬ ed on Fihifield,as well ns upon other mountains, at the expence o*f the public, and furnifhed with fire, light, and kitchen-utenfils. Nothing can be more difinal and dreary than thefe mountains covered with eternal fnow, where neither houfe, tree, nor living creature is to be feen, but here and there a folitary rein-deer, and perchance a few wandering Laplanders. In travelling from Sweden to Nordenfields, there is only one way of avoiding this chain of mountains ; and that is, where it is interrupted by a long deep val¬ ley, extending Irom Romfdale to Gnldbrandfdale. In the year 1612, a body of 1000 Scots, commanded by Sinclair, and fent over as auxiliaries to the Swedes, were pyt to the fword in this defile, by the peafants of Guldbrand, who never give quarter. Befides this chain, there is a great number of de¬ tached mountains over all the country, that form val¬ leys and ridges, inhabited by the peafants. Some of thefe are of incredible height, and others exhibit very remarkable appearances. In failing up Joering Creek on the left hand, the fight is aftonifhed with a groupe of mountains, refembling the profpeft of a city, with old Gothic towers and edifices. In the parilh of Oer- jkong is the high mountain Skopfhorn, the top of which reprefents the figure of a fortification, with re¬ gular walls and baftions. In the diftrift of Hilgeland appears a very high range of mountains, with feven pinnacles or crefts, known by the appellation of the Seven Sifterdifcernible a great way off at fea. To the fouthward of this range, though in the fame di- ftridf, rifes the famous mountain Torghntten, fo called becaufe the fummit refembles a man’s head with a hat on, under which appears a fingle eye, formed by an aperture through the mountain, 1 ;;oells high, and 3000 eils in length. The fun may be feen through this finprifing cavity, which is paffable by the foot of tfa- vellers. On the top of the mountain we find a refer- voir of water, as large as a moderate fifh-pond: in the lower part is a cavern, through which a line 400 fa¬ thoms in length, being let down, did not reach the bottom. At Herroe in Sundmoer is another cavern called Doljleen, fuppofed to reach under the fea to Scotland ; which, however, is no more than an idle tradition. In the year 1750, two clergymen entered this fubterranean cavity, and proceeded a confiderable way, until they heard the fea dafhing over their heads: the paffage was as wide and high as an ordinary church, the Tides perpendicular, and the roof vaulted. They defeended one flight of natural flairs ; but arri¬ ving at another, they were afraid to penetrate farther: they had gone fo far, however, that two candles were confumed in their pvogrefs and return. A cavern of a very curious nature, ferving as a conduit to a ftream cf water, penetrates through the fides of the moun¬ tain Limur. In the diflridfof Rake, in the neighbour¬ hood of Frederickfhall, are three cavities in a rock ; one of which is fo deep, that a fmall ftone dropped down, does not reach the bottom in lefs than two mi¬ nutes; and then the found it produtes is pleafant and melodious, not unlike the found of a bell. The vaft mountains and rugged rocks that deform tiie face of this country are produiflive of numberlefs NOR inconveniences. They admit oflittle arable ground: N they render the country in fome parts impaffable, and every where difficult to travellers: they afford fheltcr to wild beads, which come from their lurking holes, and make terrible havock among the flocks of cattle: they expofe the fhcep and goats, as well as the pea- fant, to daily accidents of falling over precipices : they occafion Bidden torrents, and falls of-fnovv, which de- feend with incredible impetuoiity, and often fweep away the labours of the hufbandman; and they are fub- jed to dreadful difruptions, by which huge rocks are rent from their fides, and, hurling down, overwhelm the plains below with inevitable ruin. The peafants frequently build their houfes on the edge of a fieep precipice, to which they mufl climb by ladders, at the hazard of their lives ; and when a perfon dies, the corpfe muft be let down with ropes, before it can be laid in the coffin. In winter the mail is often drawn up the fides of fleep mountains. Fven in the king’s road, travellers are expofed to the frequent rifles of ffilling over thofe dreadful rocks ; for they are obliged to pais over narrow pathways, without rails or rifing on the fides, either fhored up with rotten pofts, or fufpended by iron bolts faftened in the mountains. In the narrow pafs of Naeroe is a remarkable way of this kind, which, above 600 years ago, the famous king Surre caufed to be made for the paffagt of his cavalry ; and even this would have been found impaf- fable by any other horfes than thofe of Norway, which are ufed to climb the rocks like goats. Another very difficult and dangerous road is that between Shogtfadt and Vang in Volders, along the fide of a fteep moun¬ tain, in fome places fo narrow, that if two travellers on horfeback fhould meet in the night, they would find if impraffiicable either to pafs each other, or turn back. In fuch a cafe their lives could not be faved, unlefs one of them Ihould alight, and throw his horfe headlong into the lake below, and then cling to the rock, until the other could pafs. When a fheep or goat makes a falfe ftep to the projedlion of a rock, from whence it can neither afeend nor defeend, the owner hazards his own life to preferve that of the ani¬ mal. He diredts himfelf to be lowered down from the top of the mountain, fitting on a crofs flick, tied to the end of a long rope; and when he arrives at the place where the creature ftands, he faftens it to the fame cord, and it is drawn up with himfelf. Perhaps the other end of the rope is held by one perfon only ; and there are fome inflances in which the affiftant has been dragged down by the weight of his friend, fo that both have perifhed. When either man or beafl has had the misfortune to fall over very high precipices, they have not only been fuffocated by the repercuffionof the air, but their bodies have been always burft before they reached the ground. Sometimes entire crefts of rocks, many fathoms in length and breadth, have fallen dow-n at once, creating fuch a violent agitation of the air, as feemed a prelude to the world’s diflblu- tion. At Steenbroe in Laerdale, a ftupendous mafs^ larger than any caftle in the univerfe, appears to have been fevered and tumbled from the mountain in large, Iharp, and ragged fragments, through which the river roars with hideous bellowing. In the year 1731, a promontory on Sundmoer, called Rammersjield, that hung I 114 1 N O hung ov*r Nordal Creek, plunt red into the water; which fwelled to fuch a de¬ gree," that the church of Strand, tho’ half a league on the other fide of the bank, was overflowed: the creek, however, was not filled up; on the contrary, the fifher- men declare they find no difference in the depth, which is fatd to exceed 900 fathoms. The remarkable rivers of Norway are thefe : The Nied, iffuing from Tydalen, on the borders of Swe¬ den, runs weftward into the lake Selbo'e ; and after¬ wards, turning to the northward, paffes by the city of Drontheim, to which it anciently gave the name of Nideros and Nidrqfia : Sule Ely, that defcending from Sulefield, runs with a rapid courfe thro’ Nordale into the fea : Gulen, which rifes near Sffarsfield in the north ; and running 20 leagues weflward, thro’ Aalen, Hlotaalen, Storen, and Melhuus, difcharges icfelf in¬ to the lea, about a league to the well of Drontheim. In the year 1344* this river buried itfelf under ground : from whence it again burft forth with fueh violence, that the earth and ftones thrown up by the eruption filled the valley, and formed a dam ; which, however, was foon broken and waflied away by the force of the water. Divers churches, 48 farm-houfes, with 2 5c perfons, were deffroyed on this occafion. Ot- teroen, a large river, taking its rife from the moun¬ tain Agde, runs about 30 leagues through Seeterdale and Efie, and difembogues icfelf into the cataract of Wiland. The river Syre rifes near the mountain Lang, and winds its courfe thro’ the vale of Syre into the lake of Lunde in the diocefe of Chriftianfand ; thence it continues its way to the fea, into which it difcharges itfelf through a narrow ftrait formed by two rocks. This contraftion augments its impetuo- fity, fo that it fhoots like an arrow into the fea, in which it produces a very great agitation. Nid and Sheen are two confiderable rivers, ilfuing out of Tille- mark. Their water-falls have been diverted, with in¬ finite labour, by canals and paffages cut through the rocks, for the convenience of floating down the tim¬ ber. Tyrefiord, or Dramme, is in the neighbour¬ hood of Honifoffe, joined by two rivers from Oedale and Hadeland, and difembogues itfelf into the fea near Bragnefs. Loven rifes in the higheft part of Numme- dal, and runs through Konfberg to the fea near Laur- wig. Glaamen is the largefl: river of Norway, didin- guiflied by the name of Stor Elvin, or the great river. It derives its origin from the mountain Dofre, from whence it winds all along the plains of Oefterdale and Soloe ; then joins the Vorme, another confiderable ri¬ ver riling out of Mioes and Guldbrandfdale. Thefe being joined, traverfe the lake Oeycren ; and thence iffuing, run on to Sarp near Frederickftadt. Norway abounds with frefh-water lakes; the prin¬ cipal of which are, Ryfvand in Nordland, Snaafen, Selboe, the Greater and Leffer Mioes, Slirevand, Sperddle, Rand, Velln, Saren, Modi-un, Lund, Nor- loe, Huidfoe, Farifvand, and Oeyevand : all thefe are well Rocked with filh, and navigable for large reflels. Vv ars have been formerly carried on upon thefe inland leas ; in fome of which are fmall floating iflands, or parcels of earth, with trees on them, fepa- rated from the main land, and probably preferved in compad maffes by the roots of trees, fhrubs, and grafs, interwoven in the foil. In the year 1702, the family- R [ 1 r£ ] NOR fuddenly gave way, and feat of Barge, near Frederickftadt, being a noble Nftrwiy. edifice, with lofty towers and battlements, fuddenly funk into an abyfs 100 fathoms deep, which was in- ftantaneoully filled by a piece of water 300 ells in length and about half as broad. Fourteen perfons, wi,th 200 head of cattle, periflied in this cataftrophe, which was occafioned by the river Glaamen precipita¬ ting itfelf down a water-fall near Sarp, and under* mining the foundation. Of all the water-falls in Norway this of Sarp is thy fome unfavourable years, in which the fun feems to have loll his genial power; the vegetables are llunted ; the trees bud and bloom, yet bear no fruit ; and the grain, though it rifes, will^yet pro¬ duce nothing but empty ears and llraw. I his cala¬ mity, however, rarely occurs ; and in general the cul¬ tivated parts of Norway yield plentiful crops of ex¬ cellent rye, barley, and oats '1 he moft fruitful pro¬ vinces are Nordland, Inderbarre, and Numedale, in the diocefe of Drontheim ; Sognifiord and Vaas, in that of Bergen; Jedderen, Ryefyllk, Raabygdelag, and the lordlhip ol Nedenes, in the diocefe of Chrilli- anfand ; Hedemark in the diocefe of Aggerhuis ; Ha- deland, Toten, Romerige, Kingerige, and Guld- brandfdale : thefe territories not only produce grain enough for their own confumption, but likewife fupport their neighbours, and even fupply part of Sweden. Peafe are hkewife propagated in this coun¬ try, together with wheat, buck-wheat, hops, hemp and flax, but not to any confiderable advantage. The meadows are well llored with pafturage for Iheep and cattle, and the fields are produftive of thofe vegetables which are common in other northern countries. Within thefe 50 years the people of Norway have bellowed fome attention on the culture of gardens, which in former times was fo negledled, that the cities and towns wrere fupplied with leeks, cabbage, and roots, from England and Holland. At prefent, however, the Norwegians raife their own culinary and garden roots and vegetables, which thrive there as well as in any other country. The feurvy being a difeafe that prevails along the fea-coaft, Nature has Pattered upon it a variety of herbs efficacious in the cure of that dif- temper ; fuch as angelica,, rofe-wort, gentian, creffes, trefoil, forrel, fcurvy-grals, and a plant called erieb’s graftt that grows in great plenty on the iflands of Northland : from whence the people of the continent fetch away boat loads of it, to be preferved in barrels as a fuccedaneum for. cabbage. There are alfo a few noxious vegetables little known in any country but Norway. In Guldbraadfdale is a fpccies of grafs called ft If nape;, the root of which is fo poifonous, that any bcafl which eats of it dies immediately, the belly buriling ; nay, the carnivorous fowls that prey upon the carcafe of the bead meet with the fame fate : chil¬ dren have been more than once poifoned by this root, which nev'erthelefs is fometimes ufed externally as an amulet lor arthritic diforders. Another vegetable per¬ nicious to tire cattle is the Gramen ojjifragum Nor~ rwegitnfe) which is faid to mollify the bones of the cattle which feed upon it. Among the noxious plants of Norway we may alfo reckon the igle-grafs, fatal to ffieep and goats; the tour-grafs, which affedls horfes and cows w'ith a fort of lethargy ; and the plant 17 ] NOR torboe, or hifle-fpring, which produces nearly the Norway, fame elFedt ou horfes, but is not at all prejudicial to ■ * —v-~—- cows, Iheep, or any ruminating animals. The herb turte, not unlike angelica, operates nearly in the fame manner: yet the bears are faid to feed upon it with peculiar reliih ; and w hen their hair begms to fail off by feeding upon this plant, they cure^fnemfelves by eating the flelh of animals. The common fruit-trees thrive tolerably well in Norway, the inhabitants of which have plenty of cherries, apples, and pears. Some kinds of plums at¬ tain maturity ; which is feldom the cafe with grapes, apricots, and peaches. But even the apples and pears that ripen here are fummer-fruit ; that which grows till the winter feldom coming to perfe£lion. Great variety of agreeable berries are produced in different parts of this kingdom ; fuch as the hagebar, a kind of floes ; an infuiion of which in wine makes a pleafant cooling liquor; juniper berries, corinths red and white,- foelbar or fun-berries, rafpberries, goofeberries, black¬ berries, ftravvberries, &c. with many other fpeeies that feem to be natives of Norway and Swreden. Among thofe are the tranasbar, the produce of the myrtillus repens, red and auftere, found in the fpring- in perfe&ion under the fnow, and much reliflieefc by the reindeer; crakebeer, rcfembling bilberries,, deemed a powerful antifcorbutic ; agerbeer, larger and blacker than bilberries, of a pleafant acid, ripened by cold, and ufed as cherries for an infufion in wine ; and finally tylte-beer, a red pleafant berry growing o» a fhort ftem, with leaves like thofe of box : they are plucked off by handfuls, and fent to Denmark to be preferved for the table, wdiere they are eaten by way of defert. Of the trees that grow wild in Norway, the prin¬ cipal are the Hr and the pine. The firll yield an an¬ nual revenue of 1,000,coo of rix-dollars, if we include the advantages refulting from the iaw-mills and the mails ; one of which latl has been known to fell for 200 rix-dollars. The red fir-tree, which grows on the moun¬ tains, is fo rich in turpentine as tobealmoll incorruptible. Some of the houfes belonging to the Norway peafants, built of this timber, are fuppofed to be above 400 years Handing. In Guldbranfdale the houfe is fiill to Be feen Handing in which king Olaf lodged five nights, above 700 years ago, when he travelled round the kingdom to convert the people to the Chriftian faith. Even 100 years after the trunk of the fir-tree has been cut down, the peafants burn the roots for tar, which is a very profitable commodity. In the fens, the refin of the fir-tree is by nature transformed into a fubilance wdiich may be called Norway frankincenfe. The buds or pine-apples of this tree, boiled in ftale beer, make an excellent medicine for the leurvy ; lefs unpleafant to the tafte, though as efficacious, as tar- water. The pine-tree is more tall and beautiful than the fir, though inferior to it in ftrength and quality : for wdiich reafon the planks of it are fold at an infe¬ rior price, and the peafants w-afte it without temorfe. Norway likewife produces fome forells of oak, which is found to be excellent for {hip-building. Here alfo grow plenty of elm-trees ; the bark of which, being powdered, is boiled up with other food to fatten hogs, and even mixed by the poor among their meal: alfo - the afn‘, from which the peafants diltil a baifam ufed in NOH Norway, certain duorders, 2nd which is ufed both externally Y-—' an(l internally. Many other trees flourifh in this country, an enumeration of which would prove too tedious. Hazels grow here in fuch abundance, that T 00 tons of the nuts are annually exported from Bergen alone. A great diverfity of Hones is found in Norway, fome of which are of a furprifing figure Several mountains confift chiefly of a brown pebble, which decoys with age ; nay, it fometimes diflblves, and drops into the fea, and the cement being thus loofen- td, a terrible diiruption enfues. In fome places the grey and black pebbles are intermixed with iron, cop- * per, lead, filver, and gold. The ground in certain di- iiritts is covered with the fragments of rocks that have been precipitated from the fummits of mountains, and broken by their fall into innumerable fhivers. Be¬ tween io and 30 years ago, in the neighbourhood of Bergen, a man was fuddenly overwhelmed with fuch a mafs, which farmed a kind of vault around him. In ' this dreadful tomb he remained alive for feveral weeks. By his loud cries the place of his confinement was difcovered: but it was found impoffible to remove the huge ftones by which he was inclofed. All that his friends could do for him was, to lower down meat and drink through fome crevices; but at length the Hones fell in, and crufued him to death. In Norway are inexhauftible quarries of excellent marble, black, white, blue, grey, and variegated ; to¬ gether with fome detached pieces of alabafler, feveral kinds of fpar, chalk-ftone, cement-flone, fand*ftone, mill-ftone, baking-ftone, (late, talc, magnets; andfwine- ilotie, a produ&ion natural to Norway and Sweden, of a brown colour, fetid fmell, in texture refembling cryftal, and deriving its name from a fuppofed efficacy in curing a diftemper incident to fwine. Here alio is found the amianthus or ilone-flaX, of which incom- buftible cloth may be made. Norway, however, af¬ fords no flints, but plenty of pyrites or quartz, beau¬ tiful cryftals, granites, amethyfts, agate, thunder- iloncs, and eagle-ftones. Gold has formerly been found in a fmsil quantity in the diocefe of Chriftian- fand, and coined into ducats. There is at prefent a very confiderable filver mine wrought at Kongfberg on the account and at the rilk of his Danifh majelly: the ore is furprifingly rich, but interrupted in fuch a man¬ ner, that the vein is often loft. Many mafles of pure filver have been found ; and, among the reft, one piece weighing 560 pounds, preferved in the royal mufeum at Copenhagen. Such is the richnefs of thefe mines, that the annual produce amounts in value to a ton and an half in gold. About 5000 people are daily em¬ ployed, and earn their fubfiftence, in thofe ftupendous work's ’ a). Other River-mines are profecuted at jarlfberg, but not to the fame advantage ; and here the ore is mixed with lead and copper. In many parts of this NOR country copper-mines have been difcoveved ; but the Norway, ptincipal, and perhaps the richeft in all Europe, is at Roraas, about 100 Engliffi miles from Drontheim. This work yields annually about I 100 ffiip pounds of pure copper : the founderies belonging to it confume yearly about 14,000 lafts of coal, and 500 fathoms «f wood. The next in importance is the copper work at Lykken, about 20 miles from Drontheim. A third mine is carried on at Indfet, or Quickne, at the di- ftance of 30 miles from the fame place; and here they precipitate the copper from its menftruum, by means of iron. There is a fourth copper-work at Silboe, about 30 miles diftant from Drontheim, though the leaft confiderable of the four. Other copper-mines of lefs note are worked in different parts of the king¬ dom. Iron is ftillin greater plenty, and was the firft: metal wrought in this country. Many hundred thou- fand quintals are annually exported, chiefly in bars, and part of it in ftoves, pots, kettles, and cannon ; the national profit arifing from this metal is eftimated at 300,000 rix dollars. There is a fpecies called woor- iron, found in large lumps among the m ora fie s: of this the peafants make their own domeftic tools and utenfils, fuch as knives, fcythes, and axes. The lead found mixed in the filver-ore is an article of fmall im¬ portance in Norway ; yet fome mines of this metal have been lately opened in the diftrift of Soloer by the proprietors of the copper-work at Oudal. A vi¬ triol-work has been begun near Kongfberg: the mines yield great plenty of fulphur ; which, however, the Norwegians will not take the trouble to melt and de¬ purate, becaufe immenfe quantities are found at a cheaper rate in the ifland of Iceland. Alum is found between the flate flakes near Chriftiana in fuch plenty, that works have been fct up for refining this mineral, though they have not yet brought it to any degree of tranfparency. His Danilh majefty has eftablifhed falt- works in the peninfula of Valoe, about fix Engiifh miles from Tonfberg, where this mineral is extracted in large quantities from the fea-water. Befides the animals common to other countries, Norway is faid to contain many of the uncommon and dubious kind ; fuch as the kraken, mermaid, fea-fer- pent, &c. See thefe articles. Many Danifh, Englhh, Scotch, Dutch, and Ger¬ man, families have now fettled in Norway; and indeed form no inconfiderable part of the trading people : but the original inhabitants are the defcendants of thofe ferocious Normanni, who haraffed almoft all the coafls of Europe with piratical armaments in the 8th, 9th, and 10th centuries. “ Our firft certain knowledge of the inhabitants of this country (fays Pennantf; was from the defola- tion they brought on the fouthern nations by their piratical invafions. Their country had before that period the name of Nortmannaland^ and the inhabi¬ tants r ns ] (a) Mr Coxe tells up, that he vifite-d thofe mines. They formerly, he fays,' produced annually L. 70,000, but at prefent yield little more than JL. yOjOCO. I he expences generally exceed the profits ; and government gains only by the number of miners employed. The mines of cobalt, and the preparation of Pruffian blue, are much more produdlive. I he latter goes through 270 hands, and the number of men employed are 356. xt is fuppofed, that, at this period (t793)* ^ rr*ay produce to government a profit of E. 16,00© rr-ye?.r. ' NOR [ ! i Norway. t*nts Nortmans; a title which included other adjacent — people Great Britain and Ireland were ravaged by them in 84.<; ; and they continued their invaiion till they effe&ed the conquell of England, under their leader Canute the Great. They went up the Seine as far as Paris, burnt the town, and forced its weak monarch to purchafe their abfence at the price of four¬ teen thoufand marks. They plundered Spain, and at length carried their excurfions through the Mediter¬ ranean to Italy, and even into Sicily. They ufed nar¬ row veffels, like their anceftors the Sitones; and, beiides oars, added the improvement of two fails; and victualled them with faked provilions, blfcuit, cheefe, and beer. Their Ihips were at firit fmall ; but in after times they were large enongh to hold 100 or 120 men. But the multitude of veflels was ama¬ zing. The fleet of Harold Blaatand confided of 7co. A hundred thoufand of thefe favages have at once failed from Scandinavia, fo juftly ityled Ojjicina gentium^ aut certe velut vagina nationum. Probably ne- ceflity, more than ambition, caufed them to difcharge their country of its exuberant numbers. Multitudes were deftroyed ; but multitudes remained, and peopled more favourable climates. “ Their king, Olaus, was a convert to Chridianity in 994 ; Bernard an Englifhman had the honour of bap¬ tizing him, when Olaus happened to touch at one of the Scilly iflands. He plundered with great fpirit du¬ ring feveral years ; and in 1006 received the crown of martyrdom from his pagan fubjefts. But religious zeal fird gave the red of Europe a knowledge of their country and the fweets cf its commerce. The Planfe towns poured in their miflionaries, and reaped a tem¬ poral harveft. By the year 1204, the merchants ob¬ tained from the wife prince Suer every encouragement to commerce ; and by that means introduced wealth and civilization into Idr. barren kingdom. England by every method cheriflred the advantages refulting from an intercourfe with Norway, and Bergen was the emporium. Henry III. in 1 217, entered into a league with its monarch Haquin; by which both princes fti- pulated for free accefs for their fubjefts into their re- fpeftive kingdoms, free trade, and fecurity to their perfons. In 1269, Henry entered into another treaty with Magnus; in which it was agreed, that no goods Ihould be exported from either kingdom except they had been paid for ; and there is, befides, a humane provifion on both Tides, for the fecurity of the per¬ fons and effeCfs of the fubjeds who Ihould fuft’er Ihip- wreck on their feveral coafts.” The inhabitants now fpeak the fame language that is ufed in Denmark, though their original tongue is the dialed now fpoken in Iceland. They profefs the Lutheian religion, under an archbifliop eftablifh- ed at Drontheim, with four fuflragans ; namely, cf Bergen, Staffanger, Hammer, and Chrifliana. By the union of Calmar, the two kingdoms of Norway and Denmark were united under one monarch ; and then the people of both nations enjoyed conliderable privileges: hut the Danifn government foon became abfolute; and Norway was ruled defpotically by a vice¬ roy, who refided in the capital, andprefided in the fu- preme court, to which appeals were made from the fub- ordinate courts of judicature. A great change Iiae, 6 9 ] NOR however, taken place fince the prefent amiable and Norway- ^ accompliihed prince of Denmark had part of the go- vernment, and more may be expected from his virtue and affiduity when the power lhall come wholly into his own hands. The Norwegians are generally well-formed, tall, fturdy, and robuft, brave, hardy, honeft, hofpitable, and ingenious ; yet favage, ralli, quarrelfome, and liti* gious. The fame charadler will nearly fuit the inha¬ bitants of every mountainous country in the northern climates. Their women are well-fhaped, tall, comely, remarkably fair, and obliging. The nobility of Nor¬ way have been chiefly removed by the kings of Den¬ mark, in order to prevent faftion and oppoiition to the court; or are long ago degenerated into the rank of peafetnts: fome families, however, have been lately raifed to that dignity. Every freeholder in Norway enjoys the right of primogeniture and power of re¬ demption ; and it is very ufual to fee a peafant inha¬ biting the fame houfe which has been poflefled 400 years by his anceftors. The odds gads, or freehold, cannot be alienated by fale or otherwife from the right heir, called odeh-mand: if he is not able to re¬ deem the eftate, he declares his incapacity every 10th year at the fefiions ; and if he, or his heirs to the third generation, Ihould acquire wealth enough for that purpofe, the poflefibr tempore muR. refign his pof- leflion. The mountaineers acquire furprifing ftrength andf dexterity by hard living, cold, laborious exercife, climbing rocks,Heating on thefnow,and handling arms, which they carry from their youth, to defend them- felves againll the wild beafts of the foreft. Thofe who dwell in the maritime parts of Norway exercife the employments of hilling and navigation, and become very expert mariners. The peafants of Norway never employ any han- dicrafcfmen for neceffaiies to themfelves and fami¬ lies : they are their own hatters, fhoemakers, tay- lors, tanners, weavers, carpenters, fmiths, and join¬ ers: they are even expert at Ihip-building; and fome of them make excellent violins. But their general turn is for carving in wood, which they execute in a furpriling manner with a common knife of their own forging. They are taught in their youth to wreftle, ride, fwim, Ikate, climb, Ihoot, and forge iron. Their amufements confift in making verfes, blowing the horn, or playing upon a kind of guitar, and the vio¬ lin : this laft kind of mulic they perform even at fu¬ nerals. The Norwegians have evinced their valour and fidelity in a thoufand dift'erent inlbances. The' country was always diftrafted by inteftine quarrels, which raged from generation to generation. Even- the- farmers Hand upon their punflilio, and challenge one another to lingle combat with their knives. On fuch occafions they hook themfdves together by their belts, and fight until one cf them if. killed or mortally wounded. At weddings and public feafts they drink to intoxication, quarrel, fight, and murder generally enfues. The very common people are like wife paf- fionate, ambitious of glory and independence, and vain of their pedigree. The nobility and merchants of Norway fare fumptuoufly ; but the peafant lives with the utmolt temperance and frugality, except at. feiiivah - NOR l 12 Norway, ft Rivals : Lis common bread is tnaue of oatmeal, roll- ““"v ' ed into broad thin cakes, like thofe uied in Scotland. Jn time of fcarcity, they boil, dry, and grind the hark of the fir-tree into a k[nd of flour which they mix with oat-meal: the bark of the elm-tree is ufed in the fame manner. In thofe parts where a fifinery is carried on, they krcead the roes of cod with their oat¬ meal. Of thefe Lift, mixed with barley-meal, they make hallv-pudding and foup, enriched with a pickled herring or faked mackarel. Frefh iifh they have in plenty on the fea-coaft. They hunt and eat grcufe, partridge, hare, red deer, and rein-deer. They kill cow's, fheep, and goats, for their winter flock : thefe they pickle, or fmoke, or dry for ufe. They make cheefe of their milk, and a liquor called fyre of their four whey: this they commonly drink mixed w'ith win¬ ter ; but they provide a flore of flrong ale for Chrift- mas, weddings, chriflenings, and other entertain¬ ments. From their temperance and cxercife, joined to the purity and elafticity of their air, they enjoy good health, and often attain to a furprifing degree of lon¬ gevity. Nothing is more common than to fee a hearty Norwegian turned of i cc. In the year 1733, four couples danced before his Danifli majefly at Fredericks- kall: their ages, when joined, exceeded 800 years. Neverthelefs,. the Nonveigans are fubjeft to various difeafes; fuch as the fcab, the leprofy, the feurvy, the catarrh, the rheumatifm, gout, and epilepsy. The drefs of the Norway peafants confift? of a wide loofe jacket made of coarfecloath,withwaiftcoat andbreeches of the fame. Their heads are covered with flapped hats, or caps ornamented with ribbons. They wear fhoes without outer foies, and in the winter leathern bufleins. They have likewife fnow-flroes and long fleates, with which they travel at a great pace, either on the land or ice. There is a corps of foldiers thus accoutred, who can out-march the fw'ifteft horfes. ‘The Norwe¬ gian peafant never wears a neckcloth, except on ex¬ traordinary occafions : he opens his neck and breaft to the weather, and lets the fnow beat into his bofom. His body is girt round with a broad leathern belt, adorned w'ith brafs plates, from which depends a brafs chain that fuftains a large knife, gimlet, and other tackle. The women are drefled in clofe-laced jackets, having leathern girdles decorated with ornaments of fiber. They likewife wear filver chains round their necks, to tire ends of which are fixed gilt medals. Their r ps and handkerchiefs are aimed covered with fmall plates of filver, brafs, and tin, large rings, and buttons. A maiden bride appears with her hair plait¬ ed, and, together with her cloaths, hung full of fuch jingling trinkets. The churches, public edifices, and many private houfes in Norway, are built of ftone : but the people in general live in wooden houfes, made of the trunks -of fir and pine-tree laid upon each other, and joined by mortifes at the corners. Thefe are counted more dry, warm, and healthy, than done or brick build¬ ings. In the whole diocefe of Bergen, one hardly fees a farm-houfe with a chimney or window : they .are generally lighted by a fquare hole in the top of the horde, which lets in the light, and lets out the broke. In fummer this hole is left quite open : in the winter, it is covered with what they call a fi.au; that is, ^243. ^ 5 0 ] NOR the membrane of feme animal, rtretched upon a wooden Norway frame that fits the hole, and tranfmitsthe rays of light. II It is fixed or removed with a long pole occafionally. No, with. Every perfon that enters the houfe, upon bufinefs or court (hip, takes hold of this pole, according to an¬ cient cuflorn. The ceiling is about eight feet high in the middle; and, being arched like a cupola, the fmoke of the fire underneath rolls about, until it finds a vent at the hole, which is called /iur. Under this opening ftands a thick table with benches, and an high feat at "the upper end for the mafter of the family : he has likewife a fmall cupboard for his own ufe, in which he locks up his moft valuable effedfs. The boards of the roof are coated with the bark of birch-trees, which is counted incorruptible : this again is covered with turf, which yields a good crop of grafs for goats and fheep, and is often mowed as hay by the farmer. The Norwegians cany on a confiderable trade with foreign nations. The duty on the produce of their own country exported, amounts annually to 100,000 rix-dollars. Thefe commodities are, copper wrought and unwrought; iron call into cannon, ftoves, and pots, or forged into bars ; lead, in fmall quantity ; mails, timber, deal-boards, planks, marble, mill- ftones, herring, cod, ling, falmon, lobflers, floun¬ ders, cow-hides, goat ikins, ftal;ikins, the furs of bears, wolves, foxes, beavers, ermines, martens, &c. down, feathers, butter, tallow, train-oil, tar, juni¬ per and other forts of berries, and nuts; fait, alum, glafs, vitriol, and pot-afhes. All other commodities and articles of luxury the Norwegians import from different nations. The nature of the ground does not admit of much improvement in agriculture : neverthe¬ lefs, the farmers are not deficient in induftry and fkill to drain marihes, and render the ground arable and fit for pafture. Many are employed in grazing and breeding cattle : but a much greater number is engaged in felling wood, floating timber, burning charcoal, and extrading tar from the roots of the trees which have been cut down; in the filver, copper, and iron-mines; in the navigation and fifhery. A confiderable number of people earn a comfortable livelihood by hunting, (hooting, and bird-catching. Every individual is at liberty to purfue the game, efpecialiy in the mountains and commons: therefore every peafant is expert in the ufe of fire-arms ; and there are excellent markfmen among the mountains, who make ufe of the bow to kill thofe animals, whofe (kins, being valuable, would be damaged by the (hot of fire-arms. Norway can produce above 14,000 excellent fea- men. The aimy of this country amounts to 30,000 effedive men ; and the annual revenue exceeds 800,000 rix-dollars. NoRirAr-Rat, in zoology. See Mus. NORWICH, the capital of the county of Nor¬ folk in England, fituated in E. Long. 1. 26. N. Lat. ^2.40. It is fuppofed to have had its name, which fignlfies “ a cattle to the north,” from its fituation in refpeft of Caftor, the ancient Venta Icenorum, three or four miles to the fouth of it, out of whofe ruins it fetms to have rlfen. In its infancy, in the reign of Etheklred, it was plundered and burnt by Sueno the Dane, when he invaded England with a grert army. Afterwards it recovered ; and in the reign of Edward v the NOR Kerwlch. the Confeffor was a confiderahle place, having 1320 burghers. But it fufFered again much in the reign of William I. by being the feat of a civih war, which Ralph earl of the Eaft Angles raifed againft that king. So much was it impaired by the fiege it then underwent, that there were fcnrce 560 burghers left in it, as appears from Doomfday-book. From that time forward it began by little and little to recover, efpecially after Bifhop Herbert tranflated the epifco- pal fee hither from Thetford in the reign of William Rufus in 1096? and built a beautiful cathedral, of which he himfelf laid the firft ftone, with this infcrip- tion, Dominus Herlertus pnfuit primum lapidem, in nomine Patris, Ft lit ^ iff Spiritus Sanffii, Amen, i- e. “ Lord (Bifhop) Herbert laid the firfl: flone, in the name of the Father, Son, and Holy Ghoft ;5’ and by a licence from Pope Pafchal, declared it the mother- church of Norfold and Suffolk. After this, as Malmf- bury has it, it became a town famous for merchan¬ dize and the number of inhabitants. Yet it was mi- ferably haraffed in the reign of Henry II. by Hugh Bigod earl of Norfolk, who was an adherent of Henry’s fon, called the junior king. In the time of Edward I. it was walled round by the citizens, who had prefented a petition to parliament for liberty to do it. Henry IV. allowed them, inftead of bailiffs, which they had before, to deft a mayor yearly, and made the city a county of itfelf In the year 1348, near 58,000 perfons were carried off by the plague; and in 1505, the city was almoff ccnfumed by fire. For the flour!filing ftate to which the city is now arrived, they are much indebted to the Flemings, who fled hi¬ ther from the tyranny of the duke of Alva and the inquilition, and taught them the manufa&ure of thofe ftriped and flowered damalks, camblets, druggets, black and white crape * for which the place is now fo noted, and which have been computed to yield fome- times 200,000b a-year. In the year 1583, the citi¬ zens, by the help of an engine, conveyed water through pipes to the higheft parts of the city, which is plea- fantly feated along the fide of a hill, extending a mile and a half in length from north to fouth ; but the breadth is much lefs, and it contracts itfelf by de¬ grees towards the fouth. It is now one of the mofl confiderable cities in Britain for wealth, populoufnefs, neat buildings, beautiful churches (of which it had once 58, but now only 36), and the induftry and ci¬ vility of the inhabitants. The cathedral is a very ve¬ nerable ftrufture, with a curious roof, adorned with the hiftory of the Bible in little images, carved to the life, and a lofty fteeple 105 yards high. The wall of flint ftone, beautified with 40 towers and 12 gates, finiftred in 1309, is now much decayed. The city, though there is. a great deal of watte ground within the walls, was computed, about 60 years ago, to contain 8000 houfes and 50,000 inhabitants. Be- fides the cathedral already mentioned, the moft re¬ markable buildings are, the duke of Norfolk’s houfe, one of the largeil in England ; the cattle, which is now the county-gaol, and Hands in the heart of the city, with a deep moat round it, over which is a bridge of one very large arch; the Town-hall; the Guild-hall, formerly the church belonging to the mo- Tialtery of Bhck-Friars; the houfe of corredtion ; the ihire-houfe, where the affues are held; a lofty mar- Vox.. XIII. Parti. NOR ket-crofs, built after the manner of a piazza ; tbe bi- Norwich, {hop’s palace; the king’s fchool,founded by Edward VI. r"* the boys of which are nominated by the mayor for the time being, with the confent of the majority of aldermen. There having been formerly many thatched houfes, an order w'as made, that all houfes that fhould hereafter be built ftrould be covered with tiles. The city is interfperfed with gardens, orchards, and trees, which make it both pleafanr and healthful. It has four hofpitals, in which a great number of old men and women, boys and girls, are maintained ; and a dozen charity-fchools. Here are two churches for the Dutch and French Flemings ; who have particular pri¬ vileges, and are very numerous. Some of the churches are thatched, and all of them crufted with flint ftone curioufiy cut; which is the more wonderful, as Nor¬ wich Hands in a clay country, and has no flint within 20 miles of it. It is now governed by a mayor, re¬ corder, fteward, two ftreriffs, 24 aldermen, 60 com¬ mon-council, with a town-clerk, fword-bearer, and other inferior officers. The mayor is chofen on May- day by the freemen, and fworn in on the Tuefday be¬ fore Midfummer-eve The ffieriffs are alfo chofen an¬ nually, on the firft Tuefday in Auguft, one by the freemen, the other by-the aldermen, and fworn in on Michaelmas-day. The freemen of the feveral wards choofe each their alderman. The common-council is chofen in Midlent. The mayor is a juftice of the peace and quorum, during his year (as are alfo the re¬ corder and fteward) within the city and liberties; and after his mayoralty, he is a juliice during life The trade and manufactures of the city are very confider¬ able. At Yarmouth they export large quantities of their maunfaCtures, moft of which are fent to Lon¬ don, and import a great deal of wine, coal, lifh, oil, &c. All the city and country round are employed in the worfted manufacture, brought hither, as already obferved, by the Flemings, in which they not only confume the wool of their own county, in {pinning, weaving, &c. but ufe many thoufand packs of yarn, which they receive from other parts of England, as far as Yorkfhire and Weftmoreland. There are eight wardens of the weavers chofen annually, and fworn to take care that there be no frauds committed in fpin- ning, weaving, or dying the fluffs. It is computed that there are not lefs than 120,coo people employed in and about the city in the lilk and woollen manufac¬ tures. Their markets are thought to be the greateft in England, and furnifhed with a furprifing plenty and variety of goods and proviftons At a ffnall village to the north of the city, called St Faith's, not lefs than 40,000 head of Scotch cattle are faid to be yearly bought up by the Norfolk graziers, and fattened in their meadows and marihes. Its markets are on Wednefday, Friday, and Saturday. It has a great number of fairs, fends two members to parliament, and gives the title of earl to the duke of Gxrrdon. Fewcitiesortownsfeemtohavefuffered more than Nor¬ wich has done at various periods, and few feem to have felt it lefs; for tho’ quite burnt down by Sueno as above, it was of confiderable confequenee in Edward the Con- feffor's time:; nor did it long feel the evils of the in- furredion and fiege in William the Conqueror’s time, for it was rebuilt in Stephen’s reign, and made a cor¬ poration ; betides other devaftations already mentioned. CL Ths [ 121 i NOS Ko^'ich, The city of Norwich has loner been famous for its manufa£fures; which are not, in the opinion of fome, * ’ ' v """ at prefent in fo flourifliing a Hate as formerly. In addition ro the manufacture of camblets, druggets, and crapes, it is alio remarkable for baize, ferges, dial- loons, Hackings, and woollen cloths. The inhabitants of Norwich are generally fo em¬ ployed in their manufactures within doors, that the city has the appearance of being deferted, except on Sundays and holidays, when the iireets fwarm with people. Caitor, near Norwich, was the Venta Icenorum, or capital city of the Iceni, the broken wails of which contain a fquare of about 30 acres. In thofe walls may ftill be perceived the remains of four gates and a tower. Several Roman urns, coins, and other relics of antiquity, have been found at this place. NOSE, the organ of fmell. See Anatomy, n<> 140. The ufes of the nofe are, its giving us the fenfe of fmelling ; its ferving in the great office of refpiration, and in modelling the voice; in receiving the abundant humours from the eyes, and in adding to the beauty of the face. The nofe was by the Augurs particularly attended to in forming conjeftures concerning future good or ill fuccefs. The tingling of the right or left fide of it, for in fiance, was thought to have different fignifica- tions as it happened to different fexes, or perfons in different conditions. In Tartary, the greateft beauties are thofe who have the lead nofes. Ruybrock mentions the wife of the great Jenghiz Khan as a celebrated beauty, be- caufe fhe had only two holes for a nofe. The Crim- Tartars break the nofes of their children while young, as thinking it a great piece of folly to have their nofes Hand before their eyes. la moil other countries, China excepted, great nofes are an honour. In what the beauty of the nofe confifts, different nations have different opinions: and the following re¬ flexions of Sir Joffiua Reynolds on this fuhjeft, are perhaps the molt philofophical account of the beauty Idler, of form that is to be found in any language. “ I voi. ii. fuppofe (fays Sir Jofhua) it will be eafily granted, that no man can judge whether any animal be beauti¬ ful in its kind, or deformed, who has feen only one of that fpecies; that is as conclufive in regard to the hu¬ man figure : fo that if a man born blind was to reco¬ ver his fight, and the moil beautiful woman was brought before him, he could not determine whether fire was handfome or not ; nor, if the moll beautiful and moll deformed were produced, could he any better deter¬ mine to which he Ihould give the preference, having feen only thofe two. To diflinguiffi beauty, then, im¬ plies the having feen many individuals of that fpecies. If it is alked, how is more Ikill acquired by the obfer- vation of greater numbers ? I anfwer, that, in confe- quence of having feen many, the power is acquired even without feeking after it, of dillinguilhing between accidental blemilhes and excrefcences, which are conti¬ nually varying the furface of Nature’s works, and the invariable general form which Nature moll frequently produces, and always feems to intend in her produc¬ tions. “ Thus amongll the blades of grafs or leaves of the fame tree, though no two can be found exadly alike. NOS yet the general form is invariable : a naturalift, before Nafe. he chofe one as a fample, would examine many, fince, if he took the firft that occurred, it might have, by accident or otherwife, fuch a form as that it would fcarce be known to belong to that fpecies ; he feleXs, as the painter does, the moll beautiful, that is, the mod general form of nature. “ Every fpecies of the animal as well as the vegetable creation may be faid to have a fixed or determinate form, towards which nature is continually inclining, like various lines terminating in the centre ; or it may be compared to pendulums vibrating in different d*- reXions over one central point ; and as they all ciois the centre, though only one paffes through any other point, fo it will be found that perfeX beauty is of- tener produced by nature than deformity ; I do not mean than deformity in general, but than any one kind of deformity. To inilance in a particular part of a feature ; the line that forms the ridge of the nofe is beautiful when it is ftraight; this then is the central form, which is oftener found than either con¬ cave, convex, or any other irregular form that (hall be propofid. As we are then more accuftomed to beauty than deformity, we may conclude that to be the reafon why we approve and admire it, as we approve and admire cuftoms and fafhions of drefs for no other reafon than that we are ufed to them ; fa that though habit and cullom cannot be faid to be the caufe of beauty, it is certainly the caufe of our liking it : and I have no doubt, but that if we were more uied to deformity than beauty, deformity would then lofe the idea now annexed to it, and take that of beauty ; as if the whole world fhould agree that yes and no ffiould change their meanings, yes would then deny, and no would affirm. “ Whoever undertakes to proceed further in this argument, and endeavours to fix a general criterion of beauty refpeXing different fpecies, or to fhow why one fpecies is more beautiful than another, it will be required from him firll to prove that one fpecies is really more beautiful than another. That we prefer one to the other, and with very good reafon, will be readily granted ; but it does not follow from thence that we think it a more-beautiful form; for we have no criterion of form by which to determine our judgment. He who fays a fwan is more beautiful than a dove, means little more than that he has more pleafure in feeing a fwan than a dove, either from the ftatelinefs of its mo¬ tions, or its being a more rare bird ; and he who gives, the preference to the dove, does it from feme affociation of ideas of innocence that he always annexes to the dove: but if he pretends to defend the preference he gives to one or the other, by endeavouring to prove that this more beautiful form proceeds from a particular gradation of magnitude, undulation of a curve, or direXion of a line, or whatever other conceit of his. imagination he fhall fix on as a criterion of form, he will be continually contradiXing himftlf, and find at laft that the great mother of nature will not be fub- jeXed to fuch narrow rules. Among the various rea- fons why we prefer ©ne part of her works to another, the molt general, I believe, is habit and cuflom : cu- ilom makes, in a certain fenfe, white black, and black white; it is cultom alone determines our pre¬ ference of the colour of the Europeans to the -‘Ethio¬ pians jt r 122 1 — ■ nos r u pians; anc^ they, for the fame reafon, prefer their own Nofology. coionr ty our8. I fuppofe nobody will doubt, if one ~^of their painters was to paint the godoeis of beauty, but that he would reprefent her black, with thick lips, flat nofe, and woolly hair i and it fcems cO me be would act very unnaturally if he did not; for by what criterion will any one difpute the propiiety of Ids idea : We indeed fay, that the form and colour of the European is preferable to that of the Etmopian ; but 1 know of no other reafon we have for it, but that we are more accuftomed to it. It is abiurd to fay, that beauty is pofieffed of attrafbive poweis, which jrrcfiflibly Jeize the correfponding mind with iov-e and admiration, fince that argument is equally conclufive in favour of the white and the black philofopher. “ 'L’he black and white nations mull, in refpect of beauty, be conhdered as of different kinds, at leaf- a different fpecies of the fame kind ; from one of which to the other, as I obferved, no inference can be drawn. “ Novelty is faid to be one of the caufes of beau¬ ty : that novelty is a very fufHcient reafon vvhy we fhould admire, is not denied ; but becaufe it under the name of Linkia ter- '■ rejlris gelatinofa^ membranacea, vulgahjfma,^ p. 126. t. 67. f. t. He defcribes the feeds as lyiijg in the form of little firings of beads, coiled up within the plant, or rather in the folds thereof, and only to be difcovered by the microfcope. Linnaeus mentions it, firft under the name of ByjJ'us gelatinofa fugax terrtjlru, in his Flo¬ ra Lapponica, n° 530; but he afterwards adopted Dillenius’s term, though he does not make it a laver. Linnaeus has called it, in all his fubfequent works, to?- mella (nofioc) plicata, undulata, under which name it fiands in his Specks Plantarum, p. U57> an<^ in Hud- fon’s Flora dnglica, p. 463, as alfo in a numerous fet of other authors who follow his fyftem.” Another writer in the fame work gives this account of it. “ This fubftance is very rarely feen between the middle of April and the month of O&ober. It is moft frequently to be found on the high pafture lands, where the ground is inclined to wet, and on the moors and commons in the north of England. The time we always meet with it is after a very wet night, when the air in the morning fuddenly clears up, and a fharp frofi enfues. The "frogs that then happen to be out are immediately feized by the froft, and turned into this jelly-like fubftance. For as I have had occalion fometimes to go out very early, I have found feveral parts of the frog not yet diflblved among the jelly, fuch as feet, legs, and thighs, yet in a little time afterwards the change was fully com¬ pleted. The quantity of jelly produced from one fingle frog is almoft beyond belief, even to five or fix times its bulk when in its natural ftate. ii 1 communicated this difcovery to an acquaintance, who has fince had frequent opportunities of obferving and examining this produ&ion; and we are fully af- fured, that, whatever opinion the learned may have of it, it certainly proceeds from the above-mentioned caufe wherever found. “ Moft people that I have converfed with on the fubjeft, are of opinion that this jelly falls from the ftars, or out of the higher regions of the air ; which notion, however abfurd, many are credulous enough to believe.’* Naturalifts had for fome years begun to doubt whe¬ ther thefe gelatinous fubftances were of a vegetable or animal nature, when at length Mr J. Platt of Oxford, in his letter printed in the Gentleman’s Magazine for 1776, page 402, threw fuch light on the fubjedt as to us, at leaft, is perfectly fatisfadftory. “ Fiom a child I remember feeing the meteors /footing in the air, which appearance, by my com¬ rades, was called Jlar-Jhooting, believing the ftars no larger than their apparent magnitude. This jelly-like fubftance, mentioned in your magazine, was believed to be the drofs of thefe meteors, and took the name jlar-Jhot, which pafled for certain with me till I had arrived at the age of 24, when I was engaged in bufi- nefs that required my frequently palling over both meadows and pafture-grounds, where in fpiing and autumn I faw many portions of this fuppofed alga or noftoch, but never more than one or two contiguous, moftly near the water, when the meadows were or had been juft before flooded. My conjectures were various until I faw a crow pecking of fomething in a field, which I heard to cry ; when turning my horfe to the place, I found a frog of the common fize, which the crow (of the'carrion kind) would foon have killed and gorged, had I not difturbed her, and chafed her away. - , “ About this time I found in a meadow the bowels of a frog indigefted, and compadt as the chitterlings of a calf or pig ; but white as the paper I write upon, though not tranflucid. I took it up, and placed it in a paper expofed to the air; leaving it in fome grafa where I found it, till my return that way in three days time, when I faw it changed to that tremulous jelly- like fubftance, the alga or ftar-lhot. I was much pleafed with this difcovery, and took it home in my pocket wrapped in paper, where I fhowed it to a fo- ciety of young perfons of which I was a member, who agreed with my fentiments of its being the indigeftible part of a frog difgorged by fome bird of prey. “ To corroborate my fentiments of this alga being the bowels of a frog, I luckily law fome of it lying by the fide of a brook, where I lighted and took it up, and to my great furprife found attached to the jelly the head, heart, liver, and one leg of the frog, which had been (I prefume) difgorged by fome car¬ rion crow, who frequented the flooded grounds t® pick up worms and other vermin. There was alfo fome of it found in an apple-tree at Wyfton Magna, near Leicefter, where 1 then lived, which, no doubt, was difgorged by fome owl.” Dr Darwin, in his Poem on the Loves of the Plants, is of the fame opinion with Mr Platt, that thefe gelati¬ nous fubftances are of an animal nature, and that the dif¬ ferent appearances they put on are owing to various circumftances, viz. the different birds who feed on frogs, the quantity they devour at a time, and the ftate of digeftion before they arc voided. NOSTRADAMUS (Michel), an able phyficiaa and a celebrated aftrologer, was a Provencial, and de- feended of a noble family, and born Dec. 14. 1503, at St Remy, in the diocefe of Avignon. By his grandfather he was initiated in the ftudy of the ma¬ thematics. He afterwards completed his courfes of humanity and philofophy at Avignon ; and, going thence to Montpelier, he there applied himfelf to phy- fic, till being forced away by the plague in 1525, he took his route towards Thouloufe, and paffed on till he came to Bourdeaux. This courfe held him five years; during which he undertook the cure of all fuch patients as were willing to put themfelves under his care. After this he returned to Montpelier, and was created do&or of his faculty in 1529, and then revifited the fame places where he had praaifed phyfie before. At Agen he contra&ed an aquaintance with Julius Caefar Scaliger, which induced him to make fome ftay in that town, and there he entered into matrimony ; but having buried his wife, and two children which fire brought him, he quitted Agen after a refidence of about four years. He return*- Noftoch, Noftro. damus. ed into Provence, and fixed himfelf firft at Mar- feilles; but his friends having provided an advantageous match for him at Salon, he tranfported himfelf thi¬ ther in 1544. In 1546, Aix being afthdted with the plague, he went thither at the felicitation of the inha¬ bitants, and was of great fervice ; particularly by a powder of his own invention : fo that the town in gratitude gave him a confiderable penfion for feveral years after the contagion ceafed. Returning afto wards to Salon, he became a reclufe, and made ufe of 8 ^ : his Noftro* damus. NOS his leifure to apply himfelf to his ftudies. long time followed the trade of a conjurer occafionally; and now he began to think himfelf infpired, andmira- culoufly illuminated with a profpeft into futurity. As fall as thefe illuminations had difcovered to him any future event, he entered it in writing, in fimple profe, but by enigmatical fentences, as he declared himfelf; but reviling them afterwards, he thought the fentences would appear more refpedtable, and would favour more of a prophetic fpirit if they were exprefled in verfe. This opinion determined him to throw them all into quatrains, and he afterward ranged them into centu¬ ries. When this was done, he hefitated about ma¬ king them public, till refle&ing that the time of many events which he had foretold wes very near at hand, he determined to print them. This he did with a de¬ dication addrefled to his fon Caefar, an infant only fome months old, in the form of a letter or preface, dated March i. 1555. This firft edition, which is in¬ cluded in feven centuries, was printed by Rigault at Lyons. He prefixed his name in Latin, but gave to his fon Caefar the name as it is pronounced, Notra- dame. The public were divided in their fentiments of this work : many looked upon the author as a fimple vi- fionary or a fool; while he was accufed of the black art, or black magic, by others, and treated as an im¬ pious perfon, who held a commerce with the devil: at the fame time there were not wanting fuch, and thofe in great numbers, who believed him to be real¬ ly and truly endued with the fupernatural gift of pro¬ phecy. Laftly, fome were found who remained in fufpenfe, and refrained from giving any judgment at fill upon the point. However, Henry II. and queen Catharine of Medicis his mother, were refolved to fee ©ur prophet; and, receiving orders to that effeft, he prefently repaired to Paris. He was very gracioufly received at court; and, befxdes the extraordinary re- fpeft that was paid to him, received a prefent of 200 crowns. He was fent afterwards to Blois, to make a vifit to his majefty’s children there, and report what he fhould be able to difeover concerning their defti- nies. No doubt he exerted himfelf to the utmoft on the occafion ; but what his fentence was is not known: however, it is certain, he returned to Salon loaded with honour and prefents. Animated with this fuc- cefs, he augmented his work from 300 quatrains to the number of a complete milliade, and publifhed it with a dedication to the king in 1558. That prince dying the next year of a wound which he received, as is well known, at a tournament, the book of our pro¬ phet was immediately confulted; and in the 35th quatrain of the firft century this unfortunate event was found predicted in the following verfe: Le lion jetme le vieux furmontera, En champ bellique par Jlngulier duely Dam cage dor les yeux lui crevera. Deux clqffes une puis mourir, mart cruelle. So remarkable a prediction added new wings to his fame; and he was honouredfhortly after withavifit from Emanuel duke of Savoy and the princels Margaret of France his conlort. From this time Noftradamus found himfelf even over-burdened w ith vifitors, and his fame made every day new acquifitions^ Ch. IX [ 125 ] NOS He had a coming to Salon, was eager above all things to have a fight of him. Noftradamtfs, who then was in waiting as one of the retinue of the magiftrates, being inftantly prefented to his majefty, complained of the little efteem his countrymen had for him ; whereupon the monarch publicly declared, that he ftrould hold the enemies of Noftradamus to be his enemies, and de- fired to fee his children. Nor did that prince’s favour flop here ; in palling, not long after, through the city of Arles, he fent for Noftradamus, prefented him with a purfe of 200 crowns, together with a brevet, confti- tuting him his phylician in ordinary, with the fame appointment as the reft. But our prophet enjoyed thefe honours only for the fpace of fixteen months, for he died July 2. 1566, at Salon. Befides his “ Centuries,” we have the following compolitions of his: si Treatife de far demens & de fenteurs, 1552.— A Booh of fingular Receipts, pour entreienir la fante du corps, 1556—A Piece des confitures, 1557*—si French Franjlation of the Latin of Galen’s Paraphrafe, exhorting Menedolus to Jludy, efpecia'ly to that of phy- fic, 1552. Some years before his death, he pub- liihed a fmall inftruAion for hufbandmen, Ihowing the beft feafons for their feveral labours, which he intitled, ‘Ihe Almanac of Ncjiradamus. Laftly, after his death there came out The eleventh and twelfth Centuries of his Quatrains, added to the former ten, which had been printed three times in two feparate parts. It is only in thefe firft editions that ©ur author’s Centuries are found without alterations, additions, &c. It is to this work that the following diftich of Stephen Jodelle alludes. Ncflra damus cum falfa damus, nam fallere noflrum ejl, Et cum falfa damus, nil niji Nojira damus. NOSTRE (Andrew le), comptroller of the build¬ ings of the French king, and defigner of his gardens, , diftinguilhed himfelf by carrying the art of laying out gardens to great perfedtion. He was born at Paris in 1631 ; and was near 40 years of age when M. Fouquet, fuperintendant of the finances, gave him an opportunity of becoming known by the fine gar¬ dens of Vaux-le-Vicomte. He was afterwards em¬ ployed by Louis XIV. at Verfaillts* Triannon, St Germains, &c. and difcovered an admirable tafte in all his works. In 1678 he went to Rome, with the permiffion of the French king, to improve his Ikill ; but he found nothing there comparable to what he himfelf had done. Pope Innocent XI. refolved to fee Le Noftre, and gave him a pretty long audience ; at the conclufion of which Le Noftre faid, “ I have feen the two greateft men in the world, your holinefs, and the king my matter.” There is a great difference, an- fwered the pope : “ The king is a great victorious prince ; and lama poor prieft, the fervant of the fer- vants of God.” Le Noftre, charmed with this anfwer, and forgetting who he was with, clapped the pope on the ftroulder, faying, “ Reverend father, you look ex¬ tremely well, and will live to bury all the facred col¬ lege.” The pope laughed at his prediction. Le Noftre, charmed more and more at the goodnefs of the fovereign pontiff and the fingular efteem he ftiowed for the king, threw his arms about the pope’s neck and kitted him. It was his cuftom to behave in the fame manner to all who fpoke in praife of Louis XiV. and b:2. NoftraJ damns, Noftre. not [ US J NOT Nor*, he even embraced the king fiimfelf whenever that i—-y—^ pr;nce ^turned from the country. I-e Noflrehad alfo a talent for painting. He preferred hia good fenfe and vivacity of mind to the end ot kts ufe } and cued at Paris in 1700, aged 87. NOTiE, fig ns ufed in writing, which have the force of many letters. This contrivance for expedi¬ tion is of great antiquity. It was known 10 the Greeks, and from them derived to the Romans. By whom the invention was brought into Rome is. not pre- f cifely ascertained ; but the moft general opinion f is, 0p’rfnr™d(f that in matters of importance Tully hill made ufe of IVritb"! notes or ihort-hand writing, when Cato made an ora¬ tion in order to oppofe Julius Crefar relative to the confpiracy of Catiline. Cicero, who was at that time conful, placed not aril, or expert fhort-hand wri¬ ters, in different parts of the fenate-houfe, to take down the fpeech ; and this was the hrit public occa- iion which we find recorded of employing fhort-hand writers among the Romans. It is nnneceilary to ob- i'erve, that hence proceeded the name of notary ffill in ■ life. There were three kinds of notes for fhort-hand writing ufed by the ancients, either for difpatch. or fecrecy. The firft and moff ancient was that of hiero¬ glyphics, which are rather images or reprefentations of things than of words. (See Hieroglyphics.) The Chinefe chavafters are of this kind, and may until greater propriety he called nota: than lit ter a, as ap¬ pears from what hath been already advanced. The fecond fpecies of note? were, called Jingularice, from their expreffing words by fingle letters. Serto- rius Urfatus has compiled a very copious colle&ion of fuch abbreviations, of which work there are feyeral editions. The third kind of notes were called ml a Tironianx, from Tiro the freed man of Cicero, who was excel¬ lently Ikilied in this art; and ic is to him that we are indebted for the prefervation of Cicero’s letters, ot which a great part ftill remain, and one entire book of them written to Tiro himfelf. From books it appears, that notes were very frequent among the Romans, and continued in uie to the 10th and 11th centuries. We have indeed but few books remaining that are written in fliort-hand ; but this is not furprifmg, when fuch was the unhappy fituation of early ages, that either fuperftition condemned them to the flames as the works of impious magicians or necromancers, or they were left to be devoured by vermin, through ignorance and ilupidity, which was fo very great, that fome people, as Trithemius affirms, looked upon notes inthofe days as the elements of the Armenian language. It is probable, however, that there are writings of this fort dill extant, which might contribute to enrich the republic of letters. There are feveral MSS. and inftruments written in thefe kmd of notae, in the royal library at Paris. In the year 1747, t^e learned and ingenious Monf. Car- pentier, engraved and publifhed at Paris a capitulary, and charters of Louis the Pious, emperor and king of France, written in thefe notse Tironiance. To this work the learned editor hath prefixed an Alphabetum Tironianum, together with a great number and variety of notes or marks for the different parts of fpeech, and rules for acquiring the art of writing in thefe kind *f flotes. Valerius Prohus, in his book De JJteris antiquis, explains tmny of the chara&era nftd by the Nor?.rit fhort-hand writers: and there is a didfionaiy of them .. i! ^ fet forth by Janus Gruterus. See Stenography. 1 . NOTAR il, perfons employed by the Romans to take, by mtte, trials and pleadings in their courts of judicature, or to write as amanuenfes from the mouth of an author. Thele notarii were of fervile condition. Under the reign of Juftinian, they Were formed into a college or corporate body. Notarii were alfo ap¬ pointed to attend the prefcSts, to tianfcribe for them. There were likewife mtqrii dome/tid, who were employ¬ ed in keeping the accounts of the Roman nobility ; and when the empire became Chriflian, there were notaries for cede had ical affairs, who attefted the a£ts of arthbithops, bifhops, and other fpiritual dignitaries. We find eceleliatlical notaries at Rome, under Pope Julius IV. and in the church of Antioch, about the year 37a. From thefe notaries are derived the office of chancellor to the bifhops; afterwards almoft every advocate was admitted a notary. NOTARY (notarius), lignilles a perfon, ufually fome ferivener, who takes notes, or frames ffiort draughts, of contracts, obligations, charter-parties, or other writings. At prefent we call him a notary- public, who publicly attefls deeds or writings, in or¬ der to make them authentic in another nation : but he is principally employed in bufmefs concerning mer¬ chants ; as making protefts of bills of exchange, &e. And noting a bjll, is where he goes to take notice of a merchant’s refufal to accept or pay the fame. NOTATION, in arithmetic and algebra, the me¬ thod of expreffing numbers or quantities by ffgns or chara&ers appropriated for that purpofe. See Arith¬ metic and Algebra. NOTES, in mufic, chara&ers which mark the founds, i. e. the elevations and fallings of the voice, and the fvviftnefs and flownefs of its motions. Note is likewife ufed fora mark made in a book or writing, where there occurs fomething remarkable and worthy of particular notice : as alfo tor an obfervation or explication of fome paffage in an author added in the margin, at the bottom ot the page, or ellewhere; in which fenfe it ilands contradittinguifhed to text. Note, is alfo a minute, or fliort writing, containing fome article of bulintfs ; in which fenfe w>e fay, pro- miffory note, note of hand, bank-note, &c. NOTH US, fignifies fpurious, or bajlard; whence it is figuratively applied by phyficians to fuch difeafes as, though in refpeft of a limilitude of fymptoins, &c. they have the fame denomination as fome others, yet are of a different origin, feat, or the like, from the fame. NoTHus,a Perfinn prince, and grandfather to Darius Codomannus. He is worthy of being mentioned only as he was progenitor to that fovereign vffiofe over¬ throw conferred upon Alexander the title of Great. NOTION, a word which in common language is confidered as of the fame import with idea. This, however, is improper. Notion comprehends the mean¬ ing of idea, but it denotes much more. We have a notion of fpirit, of power, of folidity ; but of thefe things we can have no ideas. Ideas are relidls of fen- fation ; but there are objedfs of knowledge which fall under the cognizance of no fenfe ; of thefe obje&s, however, we may have very diftinA notions either di¬ rect or relative. See Metaphysics, n° ir. NOTITIA, NOT [ ) NotitU NOTITIA, in literary hiftory, a book that gives I! an account of a particular country, city, or other otonetfa. ^ace. puc|i js the Not ilia Imperii Romani, Notitia Roma /wtiqua, &c. NO L'O, an ancient, large, and handfome town ot Sicily, and capital of the Val-di-Noto. It was entirely ruined by an earthquake in 1693 > ^ut t^e ‘n^a^* tants built another town at fome diftance from it, which they call Nolo Nuovo. E. Long. 14. c. N. Eat. 36. 50. Noto ( Vcil-di), one of the three valleys or provinces into which Sicily is divided ; and it lies between the fea, Val di-Demona, and Val dbMazara. Noto is the capital town. NOTONECTA, the boat-fly t a genus of infedls Plate belonging to the order of hemyptera. Barbut gives cccxlvi. the following charadler of this genus. “ i he rodrum is infledfed ; the antennae are flrorter than the thorax ; the four wings, which are coriaceous from their bafe to their middle, are folded together crofs-wife ; the hind feet are hairy, and formed for fwimming. io which may be added, that the tarfi are compofed of two articulations, and all the iix feet are equally formed for fwimming. The abdomen terminated by four little horns or appendices.” He alfo defcnbes the notonec- ta glauca, Linn. n“ 1. in thefe words. “ This inledt has a head fomewhat round, of which the eyes feem to take up the greateft part. Thofe eyes are brown and veiy large, the reft of the head being yellow. In the fore part it has a {harp trunk that projects, and is in- fkdtcd between the fore feet. On the fides are feen the antennas, very fmall, yellowdh, and that fpring from under the head. The thorax, which is broad, fhort, and fmooth, is yellow on the fore and black on the back part. The efcutcheon is large, of a rough black, and as it were nappy. The elytra, rather large, and crofted over each other, are a mixture of brown and yellow, not unlike the colour of ruft, which makes it look cloudy. The under part of the body is brown ; and at the extremity of the abdomen are to he feen a few hairs. The feet, fix in number, are of a light brown, the two hindermoft having on the leg and tarfus hairs that give them the fliape of fins, nor are they terminated by nails. The four anterior ones ate fomewhat flat, and ferve the animal to fwim with ; but at their extremity they have nails and no hairs. This infedl is feen in ftagnating waters, where it fwims on its back, and prefents its abdomen upwards; for which reafon it has been called by the Greek name of notoneBa. The hinder feet, longer than the reft, ferve it as paddles. It is very nimble, and dives down when you go to take hold of it; after which, it rifts again to the furface of the water. It mult be cautioufly handled if one would avoid being pricked by it, for the point of its roftrum is exceeding fharp and in¬ tolerably painful, but it goes off in a few minutes. The larva very much refemhks the perfedt infett.” Such is the account that. Mr Barbut gives of this beautiful nimble little creature, which we thought it our duty today before our readers, as this gentleman feerns to have been particularly attentive to the fubjedt. To this account, however, we fhali add the following. Its legs are long ; when taken out of the water it hops : it is very common in the ponds of water in Hyde-park, end in feveral other places aboutLondon. It is of a very 27 ] NOT particular form, being flattifh at the belly, and rifing to Notonedla a ridge on the middle of the back ; fo that when it !! fwims, which is almoft always on the back, its body has much the refemblanceof a boat in figure,and whence . ^ jE—E its vulgar name. It is eight lines long, three broad, and two and a half thick. T he belly is jointed, llriated, and, as Barbut obferves, hairy. Nature has provided it with an ofFenfive weapon refembling a fling, which it thrufts out when hurt from a large opening at the tail. The head is large and hard. The eyes of nearly a triangular form. The nofe is a long, green, hollow probofeis, ending in a hard and fharp point, which in its natural pofture remains under the belly, and reaches to the middle pair of legs. The outer pair of its wings are of a pale flefh-colour, with fpots of a dead white ; thefe are long, narrow, and fomewhat tranfparent *. they terminate in a roundifti point, and perfedly co¬ ver the whole body. The triangular piece which ftands between the top of the wings is hard, and perfectly black ; the inner wings are broader and fliorter than the ok ter ones ; they are thin and perfeftly tranfparent, and are of a pale pearl colour. The hinder pair being greatly longer than all the reft, they ferve as oars ; and nature has "tufted them with hair at the end for that purpofe. This creature moftly lives in the water, where it preys on fmall infe&s, killing them and fuck¬ ing their juices with its probofeis, in the manner of the water fcorpion and many other aquatic infe&s ; and it feizes its prey violently, and darts with incre¬ dible fwiftnefs to a confiderable diftance after it. Though it generally lives in the water, it fome- times, however, crawls out in good weather ; and dry¬ ing its wings by expanding them in the fun, takes flight, and becomes an inhabitant of the air, not to be known for the fame creature, unlefs to thofe who had accurately obferved it before ; when tired of flying, or in danger of an enemy, it immediately plunges into the water. We are told that there are 14 fpecies of it, leven of which are common in Europe in waters, &c. NOTTEBUKG, a town of Ruifu, in the pro¬ vince of Ingria, feated on an.ifland in the lake Ladoga, , at the place where the river Nieva proceeds from this lake. It is ftrong, has a good citadel, and was capi¬ tal of the province before Peterfourg was built. E. Long. 3 1. 40. N- Lat. 60. o. NOTTINGHAMSHIRE, a county of England, bounded on the call by Lincolnfhire, on the foutheaft and fouth by Leicefterfhire* on the weft by Derby- fliire, and on the north and north-weft by Yorkfhire. It extends in length 48 miles, 25 in breadth, and 110 in compafs ; containing 560,000 acres, 8 hundreds, 9 market-towns, 168 panfhes, 450 villages, about 17460 houfes, and 95000 inhabitants. No county in England enjoys a pleafanter and healthier air. As for the foil, it differs widely in different parts of the county. Towards the weft, where lies the fore ft of Sherwood, it is fandy ; and therefore that part of the county is called by the inhabitants the Sand: but the fouth and eaft parts, watered by the Trent and the rivulets that fall into it, are clayey ; and for that reafon are called by the inhabitants the Clay- The latter is fruitful both in corn and pa- fture; but the former produces little befides wood, coal, and fome lead. The county has a variety of commodities and manufa&ures, as wool, leather, tal- Itw, Kottlnsy- hamfoire, Notting¬ ham. NOT [ iJ low, butter, cheefe, coal, marl, cattle, malt, liquo¬ rice, (lockings, glafs, earthen-wares, and ftrong aie. The principal rivers are the 1 rent and Idle. ^ he 1 Trent, whole name is fuppofed to be derived from the French or Latin word (ignifying thirty, either _be- caufe it receives thirty fmaller rivers, or has thirty different forts of fifh in it, is inferior to no river in England, but the Severn, Thames, and Humber. It enters the county on the fouth-weft, and paffes through it to the north-eaft, where it enters Lincolnftrire, and after a long courfe falls at laft into the Humber. The Idle rifes in Sherwood-foreft ; and after tra¬ veling the northern part of the county, falls into the Trent upon the borders of Yorkfiiire and Lincolnfliire. The fpacious foreft of Sherwood lies in the wed part of the county, and indeed takes up the greateti part of it. It was formerly fo thick, that it was hardly payable ; but now it is much thinner. It feeds an infinite number of deer and dags; and has feme towns in it, of which Mansfield is the chief. It abounds in coal, and a road lies through it for thirty miles together. Since the reign of King Edward I. the nobility and gentry have had grants of it. ft was governed by a great number of officers under the late earl of Chederfield, chief foreder ; whofe ancedor, Sir John Stanhope, had a grant of it, with liberty to de- droy and kill at pleafure, referving only an hundred deer in the whole walk. The duke of Newcadle is now deward and keeper. The principal town is Nottingham, which gives name to the county. It is a handfome town, and a county of itfelf by charter. The name is derived from the Saxon word Snottengham, which figniiies caws, from the caves and apartments anciently dug in the rocks on which the town dands. Thefe, being foft, eafily yield to the fpade and pick¬ axe ; whence the townfmen have excellent cellars for the vad quantities of malt liquors made here, and fent, as well as their malt, to mod parts of England. The fituation of the town is very pleafant, having meadows on one hand, and hills of a gentle, eafy afeent, on the other. It is well fupplied with fuel, both wood and coal, from the fored ; and with fifh by the Trent, which runs about a mile to the fouth of it, and has been made navigable for barges : fo that they receive by it not only great quantities of cheefe from Warwickfhire and Staffordfhire ; but all their heavy goods from the Humber, and even from HulJ Over the Trent is a dately done-bridge of 19 arches, where the river is very large and deep, having received the addition of the Dove, the Derwent, the Irwaih, and the Soar, three of them great rivers of themfelves, which fall into it after its palling by Burton in Staf¬ fordfhire. The town is of great antiquity, and it had formerly a drong cadle, in which the Danes, in the time of the heptarchy, held out a fiege againd- Buthred king of Mercia, Alfred, and Ethelred his brother, king of the Wed Saxons. Soon after the conqued, William either repaired this fortrefs or built a new one on the fame fpot, in the fecond year of his reign, probably to fecure a re¬ treat on his expedition againd Edwin Earl of Cheder and Morcar Earl of Northumberland, who had revolt¬ ed. He committed the cuflody of it to William Pe- *erell, his natural fon, who has by fome been confi- N° 244. ? 1 NOT dered as the founder. It dands ©n a deep rock, at Nntting. the foot of which runs the river Leen ^ham. Deering, in his hidory of Nottingham, feems very judly to explode the dory of the place called Morti- mer’s-hole, having been made as a hiding-place for him ; and from his defeription of it, fhowst hat it was meant as a private paflage to the cadle, to relieve it with men or provifions in a fiege. He fays that it is one continued dair-cafe, without any room, or even a place to fit down on. It was by this paffage that Ed¬ ward III. got into the cadle and furprized Mortimer and the queen; and from hence, and his being carried away through it, it has its name. Edward IV. greatly enlarged the cadle, but did not live to complete the buildings he begun. Richard III. finilhed them. It was granted by James I. to Francis Earl of Rut¬ land. who pulled down many of the buildings j but it was dill of fo much drength, that Charles I in 1642, pitched on it as the place for beginning his operations of war. He fet up his dandard, lird on the walls of the cadle, but in two or three days re¬ moved it to a clofe on the north-fide of the cadle, without the wall, on a round fpot; after which it was for many years called Standard-clofe, and fince, from the name of one who rented it, NeviPs clofe. Where the dandard was fixed, there dood a pod for a confi- deiable time. It is a common error that it was erect¬ ed on a place called Derry-mount, a little further north than the clofe jud mentioned ; this is an artificial hill raifed on purpofd for a wind-mill, which formerly was there. The cadle was afterwards fequedered by the parliament, and the trees in the park cut down. This cadle was fo drong that it was never taken by dorm. After the civil war, Cromwell ordered it to be i'emolifhed. On the redoration, the duke of Buck- ingham, whofe mother was daughter and heir of this Francis Earl of Rutland, had it redored to him, and fold it to William Cavendifh, marquis and afterwards duke of Newcadle In 167 •, he began the prefent building, but died in 16-76, when the work was not far advanced. However, he had the building of it fo much at heart that he left the revenue of a coniider- able edate to be applied to that purpofe, and it was finiffied by Henry his fon. The expence was about 14,000!. It is one of the feats of the prefent duke of Newcadle. In the park, wed of the cadle, and facing the river Leen, are fome remains of an ancient building (if it may be fo called) cut and framed in the rock. Dr Stukeley gives it, as he does mod things, to the Bri¬ tons. Many other ancient excavations have been found in other parts of the rocks The frames for knitting dockings were invented by one William.Lea of this county, about the beginning of the lad century ; but he not meeting with the en¬ couragement he expe£ted (a cafe too common with the fird inventors of the mod ufeful arts), went with feveral of his workmen to France, on the invitation of Henry IV. The death of that king, and the troubles which enfued, prevented attention being given to the work. Lea died there, and mod of his men returned to England. Other attempts were made to deal the trade, without better fuccefa, and it has flourifhed here ever fince, and is now carried on to a very confiderable extent- NOV [ Krtft'ng* exteTit. It is noted for its horfe^races on a fine ^a”1 courfe on the north fide of the town. The corpora- Novitian. tlon *s governed by a mayor, recorder, fix aldermen, u-»v—— tv'° coroners, two iheiifFs, two chamberlains, and twenty-four common-council men, eighteen of the fcnior-council, and fix of the junior, a bell-bearer, and twi; pinders, one for the fields and the other for the meadows/ The town being within the jurifdiftion of the foreft, the former of thefe pinders is town- woodward, and attends the foreft courts. It has three neat churches, the chief of which is St Mary’s ; and an alms-houfe, endowed with tool, a-year, for twelve poor people; with a noble town houle, furrounded with piazzas. A confideral le trade is carried on in glafs and earthen wares, and frame-ftockings, befides the malt, and malt-liquors, mentioned above. Mar- fhal Tailard, when a prifoner in England, was con¬ fined to this town and county. In the duke of New- caftle’s park there is a ledge of rocks hewn into a church, houfcs, chambers, dove-houfes, See. The altar of the church is natural rock; and between that and the caftle there is an hermitage of the like work- manfhip. Upon the fide of a hill there is a very ex¬ traordinary fort of a houfe, where you enter at the garret, and afeend to the cellar, which is at the top of the houfe. Here is a noted hofpital founded by John Plumtree, Efq; in the reign of PJchard II. for thirteen poor old widows. There are four handfome bridges over the TVent and Lind. To keep thefe in re¬ pair, and for other public purpofes, the corporation fas good eftates. This town and Winch el fea both give title of eail to the noble family of Finch. Here David king of Scots, when a prifoner in England, rtfided ; and under-ground is a vault, called Mortimer's hole, becaufe Roger Mortimer earl of March is faid to have ahfeonded in it, when he was taken and hanged by orderof Edward III. W. Long. T. 5. N. Lat.53.0. NOVA-scotia. Nonsa-ScoriA. Nova Zemblct. See fVo'ua Zembla. NOVALLE, a fmali, rich, and populous town of Italy, between Padus and Trpifo. E. Long. 12. c. N. Eat. 4^.3 i- NOVARA, an ancient and firong city of Italy, in the duchy of Milan, and capital of the Novarefe. Some pretend that this city was built by the Tro¬ jans, and fo called quaji Nova Sira, becaufe they had eredled there a temple to Venus. Tacitus mentions its being made a municipal city by the Romans ; and there are many inferiptions ftill extant, which fufficiently prove its ancient fplendor. It is now a fn all hut well-built town, fituated on a little emi¬ nence, in a fine country, betwixt two rivers very well fortified, and is the lee of a bilhop fuffragan of Mi¬ lan. It is remarkable for the feveral fieges fuftained in paft times, and for being the biith-p'ace of Peter Lombard, mailer of the fentences. E. Loner, g 2 r E.Lat. 4c. 25 0 ROYAL IAN, who made fo much noife and fo gieatly dilforbed the peace ot the church, was, we are told, fii ft a I agan philofophtr. He was baptized in bed when dangeroufiy ill; recovering, however, he was after/Shis ordamed prieft <.f the church of Rome his bilhop having obtained this favour for him, which the clergy and people were far from being difoof-d to Vol. XIII. Pa it I. 6 ‘ 129 ] * - NOV grant. He does not appear to have had the good ot No vat Ian, the church much at heart; for with his wit, know- ,N,uvatlin~- ledge, and eloquence, he might have been peculiarly ferviceal le to her, had he not with cowardice fhrunk from his duty when he dreaded perfecution. His ambition to be made a bifhop likewife milled him ; and what occafioned the apoftacy of moft of the firit herefiarchp, alfo occafioned his. On the death of Fa¬ bian biftiop of Rome, after writing a letter to St Cy¬ prian, be remained quiet whilft the fee was vacant; but the promotion of Cornelius to that dignity ex¬ cited his envy and jealoufy to no common pitch. The confequtnce was a ft para t ion from the new biftiop, and from thofe who profefftd to believe, what Nova- tian ftrenuoufiy denied, that the church could receive thofe again who had 1 ten guilty of idolatry. He foon got a number of followers among the laity, and fome even among the clergy. Novatus, a prieft of Cartilage, was one of his party, and having been a party-man himfell againft St O, priati, brought his ad¬ herents with him. lie got Kimftif conftcrated Biftiop of Rome in a moft infamous arid clandtftine manner, by three weak men whom he bad moft grofsly impo- ftd upon, and one of whom did penance for having been concerned in what was fo contrary to order, de¬ cency, and the rules of the church. His defigns, however, in this d I {graceful affair did not fucceed, for he was riot acknowledged as biftiop of that diocefe ; Cornelius being confirmed in it, whilft be was condemned and excommunicated. He ftill, however, taught his doftrine, and at length became the head of the party which bears his name. Befides the letter mentioned above, St Jerome fays he wrote on the Ptjpjver, on the Sc,lb ’th, on Circumcijion, oil the Hish Friejls, on Prayer, on Jevajh meals, and on Firmnefs of mind, &c. with a large m-atife on the Tri¬ nity. None of them appear under his own name, and fome are thought not to be his. NOVATI ANS, Novatiani, a fe3° Novation derated the rigour of their mailer’s doctrine, and on.y H refufed abfolution to very great Tinners. , Novel. two jea(jer8 were proferibed, and declared he- “' - ^reties, not for excluding penitents from communion, but for denying that the church had a power of re¬ mitting fins. SeeNovATUS. NOVATION, or Innovation, in the civil law, denotes the change of one kind of obligation for-ano¬ ther ; as when a promife is accepted inftead of a writ¬ ten obligation. NOVATUS, a pried of Carthage, in the third century, who, to avoid being punifhed for a crime, joined with the deacon, named Felicifimus, againft St Cyprian. He went to Rome in 251 ; and there found Novatian, who had acquired great reputation by his eloquence, but who murmured at his not being raifed to the fee of Rome in preference to Cornelius No- vatus contracted a fnendfhip with him ; and afterwards promoted the deteftable confecration of Novatian to the fee of Rome. This irregular confecration produced a very great fehifm: Novatus alfo maintained, that the church had not the power to receive thofe to commu¬ nion who were fallen into idolatry. NOVEL, a fictitious narrative in profe, which pro- fefies to exhibit the natural workings of the human heart, the happinefs and mifery of private life, and, above all, the nature cf the affection called Love, and the confequencc of indulging it in certain circum- Rances. The novel fprung out of the old romance, and has been cenfured for infipidity, as its parent was for ex¬ travagance. (See Romance.) I hat the greater part of thofe abfurd things, which, under this title, are daily ifluing from the prefs, deferve all the con¬ tempt with which they can be treatea, is a pofition which we feel not ourfelves inclined to controvert ; but we cannot admit that any fpecies of writing is in itfelf infipid, merely becaufe numbers have attempted it without fuccefs. The heroic poems of Blackmore are univerfally known to be contemptible peiform- ances g-and if we had before us all the heroic poetry that has ever been written, how many thou funds of volumes fhould we have as mean as either Prince Ar¬ thur, King Arthur, Ehze, or nlfrcd? b et no critic has hitherto dared to maintain, that heroic poetry is an infipid fpecies of writing. But to the novel objections have been urged of more importance than its infipidity. It has been often affirmed with learned folemnity, that the perufal of novels tends to corrupt the youth of both fexes ; to produce effeminacy in men and extravagant notions of the happinefs of love in women ; that it diverts the minds of the former from more ferious and ufeful {In¬ dies, and expofes the latter to the arts of fedjuttion. That there are too many novels to which this objec¬ tion is applicable in its full force, is a fa£t which we are afraid cannot be denied : but when it is admitted, let not thefe performances be again nccufed ef infipi¬ dity ; for were they infipid, they could have no fuch confequenccs. It is by laying faff hold of the heart that they lead it affray. That a novel might be writ¬ ten fo as to intereft the heart in behalf of virtue, as much as any one has ever warped it to the fide of vice, is a truth which no man will ever venture to call in queftion \vh© has any knowledge of human na- ] NOV ture 5 and therefore we are decidedly cf opinion, that Novel, there may be novels worthy at once of the perufal of v~—' inexperienced youth and hoary wifdom. A critic *, * Jobnfcn. by no means too indulgent to works of fancy, and among whofe failings laxity of morals has never been numbered, thus expreffes himfelf on the fubjeft of novel writing :—“ Thefe familiar hiftories may per¬ haps be made of greater tife than the folemnkies of profeffed morality, and convey the knowledge of vice and virtue with more efficacy than axioms and defini¬ tions. But if the power of example is fo great, as to take poffeffion of the memory by a kind of violence, and produce effeds almoft without the intervention of the will, care ought to be taken, that, when the choice is unreitrained, the heft examples only fhould be ex¬ hibited ; and that what is likely to operate fo flrong- Iv, fhould not be mifehievous or uncertain in its ef- feds.” We have faid, that the novel profeffes above all things to exhibit the nature of love and its confequen- ces. Whether this be effential to fuch performances may perhaps be reafonably queftioned ; but it has been made an important part of the drama in molt novels, and, we think, with great propriety. It is the object of the novelift to give a true picture of life, di- verfified only by accidents that daily happen in the world, and influenced by paffions and qualities which are really to be found in converfing with mankind. To accomplifh this obje£t, he conceives a hero or he¬ roine, whom he places in a certain rank of life, en¬ dues with certain qualities of body and mind, amt condufts, through many viciffitudes of fortune, cither to the fummit of happinefs or to the abyfs of mifery, according to the paffion which he whflies to excite in his readers. In the modern novel, this hero or he¬ roine is never placed on a throne, or buried in a cot¬ tage ; beeaufe to the monarch and the cottager no dif ficulties occur which can deeply intereit the majority of readers. But among the virtuous part of the in¬ termediate orders of fociety, that affection which we call love feldom fails,at fome period of life, to take pof- - feffion of the hearts of both fexes ; and wherever it ha? place, it muff be productive of happinefs or of mifery. In the proper management of this paffion coufiffs much of the difficulty of the novel-writer. He muff exhi¬ bit his hero as feeling all the- pangs and pleafures of love, as fometimes animated with hope, and fome- times ready to fink into defpair, but slways exerting himfelf to obtain the gratification of his wifhes. In doing this, care fhould be taken, either that he never tranfgrefs the laws of virtue, or at leaf! that he never tranfgrefs them with impunity. “ It is juftly confidered as the grenteff excellency of art to imitate nature ; but it is neceflary to diftin- guifh thofe parts of nature which are mod proper for imitation : greater care is ffill required in reprefenting life, which is fo often difcoloured by paffion or de¬ formed by wickednefs. If the world be promifcuoufly deferibed, I cannot perceive (fays the great critic al-. ready quoted) of what ufe it can be to read the ac¬ count ; or why it may not be as fafe to turn the eye immediately upon mankind, as upon a mirror which fhows all that prefents itfelf without ditcrimination. 11 is therefore not a fufiicient vindication of a cha-. ra£lcr, that it ia drawn as it appears ; for many cha- vafters N O V r rafters ought never to be drawn : nor of a narrative, that the train of events is agreeable to obfervation ; for that obferva'tion which is called knowledge of the world will be found much more frequently to ‘make men cunning than good. The purpofe of thefe wri¬ tings is furely not only to Ihow mankind, but to pro- vide that they may be feen hereafter with lefs hazard ; to teach the means of avoiding the fnares which are laid by treachery for innocence, without infurmg any wi(h for that fuperiority with which the betrayer flatters his vanity ; to give the power of counterafting fraud, without the temptation to praftife it; toinr. tiate youth by meek encounters in the art of neceflary defence ; and to incieafe prudence without impairing vi rtue. » ' “ Many writers, for the fake of following nature, fo mingle good and bad qualities in their principal perfonages, that they are both equally confpicuous ; and as we accompany them through their adventures with delight, and are led by degrees to intereft our- felves in their favour, we lofe the abhorrence of their faults, becaufe they do not hinder our pleafures, or per- haps regard them with fome kindnefs for being united with fcTmuch merit.—There have been men indeed iplendidly wicked, whofe endowments threw a bright- nefs on their crimes, and whom fcarce any villany made perfeftly deteftable, becaufe they never could be wholly divefted of their excellencies: but fuch have been in all ages the great corrupters of the world; and their refemblance ought no more to be preferved than the art of murdering without pain. “ In narratives, where hiftorical veracity has no place, there fhould be exhibited the moft perfeft idea of virtue; of virtue not angelical, nor above proba¬ bility (for what we cannot credit we fhall never mu¬ tate), but the higheft and pureft that humanity can reach, which, exercifed in fuch trials as the various revolutions of things fhail bring upon it, may, by conquering fome calamities and enduring others, teach us what we may hope, and what we can perform. Vice (for vice is neceflary to be fliovvn) fhould always difguft ; nor fliould the graces of gaiety, or the dig¬ nity of courage, be fo united with it, as to reconcile it to the mind. Wherever it appears, it fhould raife hatred by the malignity of its praftices, and contempt by the meannefs of its itratagems ; for while it is fupported by cither parts or fpirit, it will feldom be heartily abhorred.” If thefe obfervations be juft, and to us they ap¬ pear unanfwerable, Richardfon’s Lovelace is a cha¬ racter which ought never to have been drawn. In the graces of gaiety and the dignity of courage, in libe¬ rality without profuflon, in perfeverance and addrefs, he every where appears as the firft of men ; and that honour with which he protefts the virtue of his Rofe- lud) if any inllruftion is to be drawn from it, can only lead the admirers of Richardfon to believe that another Clarifla might be in perfeft fafety were fhe to throw herfelf upon the honour of another Love¬ lace. Yet in the cotnpofition of this fplendid charac¬ ter there is not one principle upon which confidence can fecurely reft ; and Lovelace, whilft he is admired by the youth of both fexes, and efcapes the contempt of all mankind, muft excite in the breaft of the cool raoralift fentiments of abhorrence and deteftation. Novel, 131 ] N O A French critic f> freaking of this charafter, fays, “ By turns I could embrace and fight with Lovelace. The au_ His pride, his gaiety, his drollery, charm and amiue^Qj. Gf his genius confounds me and makes me fmile ijdieft me 11JV, • * J J his wickednefs aftonifhes and enrages me ; but at the«r fame time 1 admire as much as I deleft him.” Surely/" “ this is not the charafter which ought to be prefeuted; to the inexperienced and ardent mind. The moft perfeft charafters which we at prefent re- colleft in any novel are Richardfon’s Graridifon and Fielding’s Allworthy. The virtues of the former are perhaps tinftured with moral pedantry, if we may ufe the expreflion; and the latter fuffered himfelf to be long impofed upon by the arts of the hypocrite and the philofophical coxcomb ; but without fome defects they would not be human virtues, and therefore no objefts of human imitation. Clariifa is an excellent charafter: fhe has as much perfeftion as can he ex- pefted in woman, whilft fhe exhibits, at the fame time, fome obvious defefts. As it is the objeft 6f the novelift to intereft the heart, and to communicate inftruftion through the medium of pleafure, his work, like a tragedy or comedy, fhould be one, exhibiting a hero or heroine, whofe fuccefs every incident fhouln contribute to for¬ ward or to retard. In this refpeft no work of fancy has ever furpafied the Tom Jones of Fielding. It is conftrufted upon principles of the foundeft criticifm, and contains not a fingle event which does not in fome way contribute towards the winding up of the piece. A living author, deeply read in Grecian lite¬ rature, and far from being prejudiced in behalf of any modern, has been heard to fay, that had Ariftotle feen Tom Jones, he would have pronounced it a poem perfeft in its kind. Againft this fentence another critic of name has entered his proteft, and ftrenuoufly maintained that nothing can be a poem which is not written in verfe. We fliall judge of the truth of this conclufion by comparing it with the principles from which it is de¬ duced. Having laid down as a maxim incontro¬ vertible, that “ the end of poetry is pleafure, to which ufe itfelf muft be fubfervient,” he very juftly infers from this idea, that “ poetry fnould negleft no ad¬ vantage that fairly offers itfelf, of appearing in fuch a drefs or mode of language as is moft taking and agreeable to us. It follows (be fays), irom the fame idea of the end which poetry would accomphih, that not only rhythm, but numbers properly fo_called, is effential to it, and that it cannot obtain its own purpofe unlefs it be cloatheu in verse. He then proceeds to afk, “ What, from this conclufion, are we to think of thofe novels or romances as they are call¬ ed, which have been fo current of late through all Eu¬ rope ? As they propofe pleafure for their end, and profecute it, befides, in the way of fidion, though without metrical numbers, and generally indeed in harfh and rugged profe, one eaiily fees what their pretenfions are, and under what idea they are ambi¬ tious te be received. Yet as they are wholly defti- tute of meafured founds (to fay nothing of their other numberlefs defefts), they can at moft be couudeied but as hafty, imperfeft, and abortive poems : whether fpawned from the dramatic or narrative Ipecies, it may be hard to fay. R 2 Ua- * Novel- NOV [ >32 1 NOV Unfinlfhed things, one knows not what to call, Their generation's fo equivocal. However, fuch as they are. thole novelties have been generally well received : Some for the real merit of their execution ; others, for their arnufing fuhjecfs ; ail of them, for tire gratification they aiiord, or at lead; promife, to a vitiated, pallid, and fickly imagination, that laft difeafe of learned minds, and fare progno- ftic of expiring letters. But whatever may be the temporary fuccefs of thefe things (for they vanifh as fail as they are produced), good lenfe will acknow¬ ledge no work of art but fuch as is compofed accord¬ ing to the laws of its kind.” Of this fevere criticilm the author himfelf has given us what amounts to a complete confutation. He tells ns, that the ancients looked for fo much force and fpirit of expreflion in whatever they dignified with the name ol poem, as iometimes to make a que- ilion “ whether comedy were rightly referred to this clafs, becaufe it differed only in meafure from mere profe ? Their doubt (he juilly adds) might have been fpared or at lead vcfolved, if they had coniidered that comedy adopts as much of this force and fpirit of words as is confident with the nature and dignity of that plea fare which it pretends to give : For the name of poem will belong to every compolition whofe primary end is to pi cafe, provided it be fo conftnuvt- cd as to afford all the pleafure which its kind or fort will permit.” If this decifion be jud, and we readily admit it, Z well compofed novel is intitled to the appellation pf a poem, though it be written in profe and in a flyle not remarkable for elevation. The hufinefs of the novelift is to interefl the heart by a difplay of the incidents of common life. In doing this, he muft. ex¬ hibit fcenes that are probable, and record fpeeches that are natural. He is not at liberty to invest, but only to feledl, obje&s, and to call from the mafs of mankind thofe individuals upon which the attention ought moll to be employed. The more clofely he adheres to this rule, the more deeply does he interefl us in his narrative ; becaufe every reader fees at once that it is poffible he may at fome time or other be in circumflances nearly refembling thofe of the hero of the tale. But the bufinefs of life is not tranfafted in pompous language, nor the fpeeches of real lovers made in verfe either rhimed or blank. Were Tom Jones or Clar'ijfa Harhxve to be tranflated into verfe, we {hall venture to ’■ffc-rt that they would quickly lofe their hold of the public mind ; becaufe the hero and heroine would then appear in a light which every heart muft feel to be unnatural. It is well obferved by Johnfon, that the tafk of the novel writer “ requires, together with that learning which is to be gained from books, that experience which can never be attained by folitary diligence, but muft arife from general convene and accurate obfer- vation of the living world. Their performances have, ,33 Horace expreffes it, plus oneris quantum varise minus, little indulgence, and therefore more difficulty. They are engaged in portraits of which every one knows the original, and can detedl any deviation from exa6l- nefs of refemblance.. Other writings are fafe, except from the malice of learning, but thefe are in danger from every common reader j as the flipper ill executed was cenfured by a ftioemaker who happened to flop Novi, in his way at the Venus of Apelles.” It is in thus 'N'0vtiry»[ faithfully copying nature that the excellence of Field- ing confifts. No man was ever better acquainted with the fnades which diverfifies charadters, anil none ever made his perfonagts alt and fpeak more like real men and women in the particular circumftances which lie deferibes. “ But the fear of not being approved as a juft copier of human manners, is not the moft important concern that an author of this clafs ought to have before kith. Novels are written chiefly to the young, the ignorant, and the idle, to whom they ferve as lectures of conduct and introdudlion into life. In every fuch work, it fhould therefore be carefully in¬ culcated, that virtue is the higheft proof of under- Handing, and the only folid bafis of greatnefs ; and that vice is the natural confequence of narrow thoughts ; that it begins in mi flake, and ends in ig¬ nominy : and fince love muft be introduced, it fhouil be reprefented as leading to wretchednefs, whenever it is feparated from duty or from prudence.” Novel, in the civil law, a term ufed for the conftitutions of feveral emperors, more particularly thofe of Julltnian. They were called novels, either from their producing a great alteration in the face of the ancient law, or becaufe they were made on new cafes, and after the revifal of the ancient code. NOVELTY, or Newness. Of all the circum¬ ftances that raife emotions, not excepting beauty, nor even greatnefs, fays Lord Karnes*, novelty hath the * FJem^r moft powerful influence. A new object produces in - »f ftantaneoufly an emotion termed voonder, which totally occupies the mind, and for a time excludes all other objefts. Converfation among the vulgar never is more interefting than when it turns upon ftrange objedts and extraordinary events. Men tear themfelves from their native country in fearch of things rare and new ; and novelty converts into a pleafure the fatigues and even perils of travelling. To what eaufe (hall we aferibe thefe Angular appearances? To curiofity undoubtedly; a principle implanted in human nature for a purpofc extremely beneficial, that of acquiring knowledge ; and the emotion of wonder raifed by new and jtrange objedts, inflames our cunofity to know more of fuch ohjedts. This emotion is different from admiration r novelty, wherever found, whether in a quality or ac¬ tion, is the caufe of wonder ; admiration is diredted to the perfon who performs any thing wonderful. During infancy, every new objedt is probably the occafion of wonder, in fome degree ; becaufe, during infancy, every objedt at firft fight is ftrange as well as new : but as objedts are rendered familiar by cuftom, we ceafe by degrees to wonder at new appearances, if they have any refemblance to what we are acquainted with ; for a thing muft he lingular as well as new, to raife our wonder. To fave multiplying words, we would be underftood to comprehend both circumftances when we hereafter talk of novelty. In an ordinary train of perceptions where one thing introduces another, not a tingle objedt makes its ap¬ pearance unexpectedly : the mind thus prepared for the reception cf its objedts, admits them one after an¬ other without p^rturlation. But when a thing breaks ia uaexpedtediy, and without the preparation of any 1 CO*" NOV [ i. connexion, k rakes an errwt'on, known ky the name —y > of furpnfe. That emotion may be produced by the mod familiar objea, as when one unexpectedly meets a friend who was reported to i-e dead ; or a man in high life, lately a beggar. On the other hand, a new objeCt, however ftraiigt, will not produce the emotion, if the fpeCtator be prepared for the fight: an elephant in India will not furprife a traveller who goes to fee one ; and yet its novelty will raife his wonder : an In¬ dian in Britain would be much furprifed to Humble up¬ on an elephant feeding at large in the open fields; but the creature itfclf, to which he was accultomed, would not laife his wonde Surprife thus in feveral refpeCts differs from wonder: tinexpeClednefs is the caufe of the former emotion; no¬ velty is the caufe of the latter. Nor differ they lefs in their nature and circumftancef, as will be explained by and by. With relation to one circumftance they per- feaiy agree; which is, the (hortnefs of their duration: the inftantaneous produAion of thefe emotions in per- feCtion, may contribute to that cffeCt, in conformity , to a general law, I hat things foon decay which foon come to perfection : the violence of the emotions may alfo contribute ; for an ardent emotion, which is not fufceptible of increafe, cannot have a long courfe. But their (hort duration ts occafioned chiefly by that of their caufes : we are foon reconciled to an objeCt, how¬ ever unexpected ; and novelty foon degenerates into familiarity. Whether thefe emotions be pleafant or painful, is not a clear point. It may appear ffrange, that om own feelings and their capital qualities ihonld afford any matter for a doubt: but when we are engroffed by any emotion, there is no place for fpeculation ; and when fufficiently calm for fpeculation, it is not eafy to recal the emotion with accuracy. New obje&s are fometimes terrible, fometinus delightful: the tenor which a tyger infpires is greateft at firff, and wears off gradually by familial ity : on the other hand, even wo¬ men will acknowledge that it is novelty which pleafes the molt in a new falhion. It would be ralh however to conclude, that wonder is in itfelf neither pleafant nor painful, but that it affumes either quality according to circumltances. An objeCt, it is true, that hath a threatening appearance, adds to our terror by its no¬ velty : but from that experiment it doth not follow, that novelty is in itfelf difagreeal le; lor it ispereCtly confident, that we be delighted with an object in one view, and terrified w ith it in another. A river in flood fwelling over its banks, is a grand and delightful ob- jeCt ; and yet it may produce no finall degree of fear when we attempt to crofs it: coinage and magnani¬ mity are agreeable; and yet, when we view thefe qua¬ lities in an enemy, they ferve to increafe our terror. In the fame manner, novelty may produce two effeCis clearly diftinguifhable from each other: it may, di- reCtly and in itfelf, be agieeable ; and it may have an oppofite effeCt indireftly, which is, to infpire terror ; for when a new objeCt appears in any degree danger¬ ous, our ignorance of its powers and faculties affords ample fcope for the imagination to drefs it in the molt frightful colours The firft fight of a lion, for ex¬ ample, may at the fame inftant produce two oppofite feelings, the pleaiant emotion of wonder, and the pain¬ ful pafiion of terror: the novelty of the objeCt pro- ; 1 NOV duces the former direCtly, and contributes to the lat¬ ter indireCtly. Bhus, when the fuojeCt is an^lifcd, we find that the power which novelty hath indi- re&ly to inflame terror, is perfcCtly confiftent with its beinz in every circanltance agreeable. The mat¬ ter may be put in the clearest light, hy ad mg the following circumftance. If a lion be firft feen from a place of fafety, the fpeAacle is altogether agreeable without the leaft mixture of terror. If, again, the fait fight puts us within reach of that dangerous ani¬ mal, our terror may be fo great as quite to exclude any fenfe of novelty. But this fad proves not that wonder is painful: it proves only, that wonder may be excluded by a more powerful paifion. Eveiy man may be made certain from his own experience, that won¬ der raifed by a new objeft that is inoffenfive, is al- ways pleafant; and with refped to offenfive objefts, it appears, from 1e : foregoing deduction, that the fame muff hold as long as the fpeftator can attend to the novelty. Whether furprife be in itfclf pleafant or painful, is a queftion not lefs intricate than the former. It is cer¬ tain that furprife inflames our joy when unexpectedly we meet with an old friend ; and not lefs our terror when we ffumhle upon any thing noxious. To clear that queftion, the firft thing to be remarked is, that in feme inftances an unexpected obje& overpowers the mind, fo as to produce a momentary ftupefaCtion : where the objeCt is dangerous, or appears fo, the hid¬ den alarm it gives, without preparation, is apt totally to unhinge the mind, and for a moment to Impend ail its faculties, even thought itfelf; in which Rate a man is quite helplefs ; and if he move at all, js as like to run upon the danger as from it. Surprife carried to fuch a height, cannot be either pleafant or painful; be- eatife the mind, during fuch momentary ftupefaCtion,■ is in a good meafure, if not totally, infeyrfible. If we then inquire for the character of this emotion, it muft be where the unexpected object or event pro- duceth lefs violent effeCts. Amd'while the mind re^ mains fenfibie of pdeafure and pain, is it not nucui al to fnppofe, that furprife, like wonder, fltould have an in¬ variable character ? It would appear, however, that furprife has no invariable charaCter, but affumes that of the object which raifes it. Wonder being an emo¬ tion invariably raifed by novelty, and being diftinguiih- able from all other emotions, ought naturally to pot- ftfs one conftant charaCter. The unexpected appear¬ ance of an objeCt, feems not equally intitled to pro¬ duce an emotion diftinguifliable from the emotion, plea¬ fant or painful, that is produced by the objeCt in its ordinary appearance: the effect it ought naturally to have, is only to fwell that emotion, by making it mere pleafant or more painful than it commonly is. And that conjecture is confirmed by experience, as well as by language which is built upon experience : when a man metts a friend unexpectedly, he is faid to be agreeably furprifed ; and when he meets an enemy unexpectedly, he is faid to be difagreeably furprifed. It appears, then, that the foie effeCt of furprife is to fwell the emo¬ tion raifed by the objeCt. And that effeCt can be clear¬ ly explained : a tide of conneCted perceptions glide gently into the mind, and produce no perturbation but an objeCt breaking in unexpectedly, founds anr alarm, roules the miad out of its cahti ftate, and dirsCia its N .ve’ty. V NOV C *34 1 NOV Novelty. ,°ts whole attention to the obje&, which, if agreeable, ' ”v becomes doubly fo. Several circumilances concur to produce that effedt: on the one hand, the agitation of the mind and its keen attention prepare it in the moft effedtual manner for receiving a deep impreffion : on the other hand, the objeft, by its fudden and unfore- feen appearance, makes an impreffion, not gradually as expe&ed objefts do, but as at one ftroke with its whole force. The circumftances are precifely hmilar where the objedl is in itfelf difagreeable (a). The pleafure of novelty is eafily dittinguiffied from that of variety : to produce the latter, a plurality of objefts is neceffary ; the former arifes from a circum- itance found in a fingle objeft. Again, where obje&s, whether coexiftent or in fucceffion, are Efficiently di- verfified, the pleafure of variety is complete, though every angle objedl of the train be familiar ; but the pleafure of novelty, dire&ly oppoffie to familiarity, re¬ quires no diverfification. There are different degrees of novelty, and its ef¬ fects are in proportion. The lowefl degree is found in objedts fnrveyed a fecond time after a long interval; and that in this cafe an objeit takes on fome appear¬ ance of novelty, is certain from experience: a large building of many parts varioufly adorned, or an exten¬ sive field etnbelliffied with trees, lakes, temples, ftatues, and other ornaments, will appear new oftener than once : the memory of an object fo complex is foon loft, of its parts at leaft, or of their arrangement. But ex¬ perience teaches, that, even without any decay of re¬ membrance, abfence alone will give an air of novelty to a once familiar objedb ; which is not furpriling, be- caufe familiarity wears off gradually by abfence : thus a perfon with whom we have been intimate, return¬ ing after a long interval, appears like a new acquaint¬ ance. And diftance of place contributes to this ap¬ pearance, not lefs than diftance of time : a friend, for example, after a fhort abfence in a remote coun¬ try, has the fame air of novelty as if he had return¬ ed after a longer interval from a place nearer home : the mind forms a connexion between him and the re¬ mote country, and bellows upon him the fingularity ' of the objects he has feen. For the fame reafon, when two things equally new and fingular are prefented, the fpeftator balances between them ; but when told that one of them is the produdl of a diftant quarter of the world, he no longer hefitates, but clings to it as the more fingular: hence the preference given to foreign luxuries, and to foreign curiofities, which appear rare in proportion to their original diftance. The next degree of novelty, mounting upward, is found in objedls of which we have fome information at fecond hand ; for defeription, though it contribute to familiarity, cannot altogether remove the appearance of novelty when the object itfelf is prefented : the firll fight of a lion occafions fome wonder, after a thorough acquaintance with the corre6ieft pidlures and flatties of that animal. A new objeft that bears fome diftant refemblance to a known fpecies, is an inftance of a third degree of novelty : a flrong refemblance among individuals of the fame fpecies, prevents almoft entirely the effect of novelty, unlefs diftance of place or fome other circum- flance concur ; but wdiere the refemblance is faint, fome degree of wonder is felt, and the emotion rifes in pro¬ portion to the faintnefs of the refemblance. The highefl degree of wonder arifeth from unknown obje&sthat have no analogy to any fpecies we are ac¬ quainted with. Shakefpeare in a fimile introduces that fpecies of novelty : As glorious to the fight As is a winged meffenger from heaven Unto the white up-turned wond’ring eye Of mortals, that fall back to gaze on him When he beflrides the lazy-pacing clouds And fails upon the bofom of the air. Romeo and Juliet. One example of that fpecies of novelty deferves pe¬ culiar attention ; and that is, when an object altoge¬ ther new is feen by one perfon only, and but once. 2 Thefe Novelty. (a) \^hat the Marefchal Saxe terms le cceur huma'in^ is no other than fear cccafioned by furprife. It is owing to that caufe that an ambufh is generally fo dcflrudtive : intelligence of it beforehand renders it perfeft- ly harmlefs. I he Marefchal gives from Casfar’s Commentaries two examples of what he calls le cceur humdin. At the fiege of Amiens by the Gauls, Caefar came up with his army, wrhich did not exceed 7000 men ; and began to entrench himfelf in fuch hurry, that the barbarians, judging him to be afraid, attacked his entrench¬ ments with great fpirit. During the time they were filling up the ditch, he iffued out with his cohorts, and by attacking them unexpectedly ftruck a panic that made them fly with precipitation, not a fingle man of¬ fering to make a iland. At the fiege of Alefia, the Gauls infinitely fuperior in number attacked the Roman lines of circumvailation, in order to raife the fiege. Crefar ordered a body of his men to march out filently, and to attack them on the one flank, while he with another body did the fame on the other flank. The fur¬ prife of being attacked when they expeClcd a defence only, put the Gauls into diforder, and gave an eafy vic¬ tory to Caefar, . third may be added not lefs memorable. In the year 846, an obllinate battle wras fought between Xamire king of Leon and Abdoulrahman the Moorifh king of Spain. After a very long conflict, the night only pre¬ vented the Arabians from obtaining a complete victory. The king of Leon, taking advantage of the darknefs, retreated to a neighbouring hill, leaving the Arabians mailers of the field of battle. Next morning, perceiving that he could not maintain his place for want of provifions, nor be able to draw off his men in the face of a vic¬ torious army, he ranged his men in order of battle, and, without lofiug a moment, inarched to attack the enemy, rcfolving to conquer or die. TLhe Arabians, aftonilhed to be attacked by thofc who were conquered the night before, loft all heart: fear xucceeded to aftonilhment, the panic was univerfal, and they all turned their backs without almoft drawing a fvvord. Novelty. NOV [ '35 i NOV Thefe clrcumftances heighten remarkably the emotion : the fingnlarity of the fpeftator concurs with the iin- gularity of the object, to inflame wonder to its higheft pitch. In explaining the effetts of novelty, the place a be¬ ing occupies in the feale of exigence, is a circumftance that mult not be omitted. Novelty in the individuals of a low clnfs is perceived with indifference, or with a very flight emotion : thus a pebble, however lingular in its appearance, fcarce moves our wonder. The emo¬ tion rifes with the rank of the objeft ; and, other cir- cumflances being equal, is ftrongef! in the higheft or¬ der of exiftence ; a flrange infedt affedts Us more than a ftrange vegetable ; and a flrange quadruped more than a Hrange infedt. However natural novelty may be, it is a matter of experience, that thofe who relifh it the moft are care¬ ful to conceal its influence. Love of novelty, it is true, prevails in children, in idlers, and in men of fhallow underftanding : and yet, after all, why fhould one be afhamed of indulging a natural propenfity ? A diflinc- tion will afford a fatisfadlory anfwer. No man is afha¬ med of curiofity when it is indulged to acquire know¬ ledge. But to prefer any thing merely becaufe it is new, fhows a mean tafie which one ought to be afha¬ med of: vanity is commonly at the bottom, which leads thofe who are deficient in tafie to prefer things odd, rare, or Angular, in order to ciflinguifh them- felves from others. And in fadl, that appetite, as above-mentioned, reigns chiefly among perfons of a mean tafie, who are ignorant of leflned and elegant pleafures. Of this tafie we have feme memorable inflances in men of the higheft and the befl education. Lucian tells the following flory of Ptolemy I. which is as dif- graceful to him, as honourable to his fubjedts. This prince h: d ranfacked the world for two curiofities : one was a camel from Badtria all over black ; the other a man, half black half white. Thefe he prefented to the people in a public theatre, thinking they would give them as much fatisfaclion as they did him ; but the black monfler, inftead of delighting them, affright¬ ed them ; and the party-coloured man raifed the con¬ tempt of feme and the abhorrence of others. Ptolemy, finding the Egyptians preferred fymmetry and beauty to the moll allonifhing produdtions of art or nature wdthout them, wifely removed his two enormous trifles out of fight; the negledted camel died in a little time, and the man he gave for a fong to the mufleian Thcfpis. One final caufe of wonder, hinted above, is, that this emotion is intended to flimulate our curiofity. Another, fomewhat different, is, to prepare the mind for receiving deep imprefhons of new objedls. An ac¬ quaintance with the various things that may affedl us, and with their properties, is effential to our w^ell-being: wor will a flight or fuperficial acquaintance be fuffi- cient; they ought to be fo deeply engraved on the mind, as to be ready for ufe upon every occafion. Now, in order to a deep impreffion, it is wifely con¬ trived, that things fnould be introduced to our ac¬ quaintance with a certain pomp and folemnity produc¬ tive of a vivid emotion. When the impreffion is once fairly made, the emotion of novelty being no longer neccflary, vanifheth alrnofl iuftantaneoufly; never to Noviciate. return, unlefs where the impreffion happens to be ob- Novellara literated by length of time or other means ; in which cafe the fecond introduction hath nearly the fame fo- lemnity with the firft. Defigning wifdom is nowhere more eligible than in this part of the human frame. If new objeCts did not affeft us in a very peculiar manner, their impreffions would be fo flight as fcaice to be of any ufe in life: on the other hand, did objedls continue to affeCl us as deeply as at firfl, the mind would be totally en- groflfed with them, and have no room left either for adtion or reflection. The final caufe of furprife is ftill more evident than of novelty. Self-love makes us vigilantly attentive to felf-prefervation ; but felf love, which operates bv means of reafon and reflection, and impels not the mind to any particular objeCt or from it, is a principle too cool for a fudden emergency; an objeCl breaking in unexpectedly, affords no time for deliberation ; and in that cafe, the agitation of furprife Comes in feafon- ably to roufe felf-love into action : furprife gives the alarm ; and if there be any appearance of danger, our whole force is inflantly fumrnoned to fhun or to pre¬ vent it. NOVELLARA, a handfome towm of Italy, and capital of a fmall diftrict of the fame name, with a handfome caflle, where their fovereign refides. E Lon. 10. 37. N. Lat. 45. 50. NOVEMVIRI, nine magiflrates of Athens, whofe government lafled but for one year. The firit of whom was called arcbon, or prince ; the fecond ba- fiiius, or king ; the third polemarchus, or general of the army : the other fix were called thcfimtbeta, or lawgivers. They took an oath to obferve the laws ; - and in cafe of failure, obliged themfelves to bellow upon the commonwealth a flatue of gold as big as themfelves. Thofe who difeharged their office with honour, were received into the number of the fenators of Areopagus. NOVI, a town of Italy, in the territory of Genoa, on the confines of the Milanefe. It was taken by the Piedmontefe in 1746. E. Long. 8. 48. N. Lat. 44- Lv Novi Bazar, a confiderable town of Turkey in Europe, and in Servia, near the river Orefco. E.Long. 20. 24. N. Lat. 43. 25. NOVICE, a perfon not yet fkilled or experienced in an art or proftffion. In the ancient Roman militia, novicii, or noviili, were the young raw fiddlers, diflinguifhed by this ap¬ pellation from the veterans. . In the ancient orders of knighthood, there were novices, or clerks in arms, who went through a kind of apprenticefhip ere they were admitted knights.— tee Knight. Novice is more particularly ufed in monalleries for a religious yet in his, or her, year of probation, and who has not made the vows. In feme convents, the fab-prior has the diredti-on of the novices. In nunneries, the novices wear a white veil; the reft a black one. NOVICIATE, a year of probation appointed for the trial of religious, whether or no they have a voca¬ tion, and the neceffary qualities for living up to the rule,; the cfcfervation whereof they are to bind them- 2.. fekc4 NOV [ 136 ] NOV Kov:grad felves to by vow. The noviciate bails 3 year at lead ; li in fome houfea more. It is eileemed the bed of the rodg°" ^eat^ a novice> who expires to the world by -- -— 1 profeffion. NOVIGRAD, a ftnall but ftrong town of Upper Hungary, capital of a county of the lame name, with % good caftle, feated on a mountain near the Danube, E. Long. 18. 10. N. Lat. 40. 50. Novigrad, a fmall but ftrong town of Dalmatia, with a caftle, and fubjeft to the Turks ; feated on a lake of the fame name, near the gulph of Venice. E. Long. 16. 45. N. Lat. 44. 30. Novjgrad, a very ftrong place of Servin, fubjcCt to the Turks ; feated near the Danube. E. Long. 26. 5. N. Lat. 45. 5. NOVIODUNUM (Caefar), a town of the jEdui, commodioufly feated on the Liguris: the Nine-mum of Antonine. Now Nevers in the Orleannois, on the Loire.—A fecond Nomodunum of the Aulerci Dia- Llintes, in Gallia Celtica, (Antonine) ; called Novio- dunum (Ptolemy), and Noningenium Rotrudum by the moderns : Nogente le Rotrou, capital of the duchy of Perche.—-A third of the Bituriges, (Ctefar) : Now Nuene fur Baranion 5 a village J 5 miles to the north of Bour.ges, towards Orleans.—A fourth, of Moelia Inferior, (Ptolemy), frtuated on the Ifter: now ATuorz., in Beffarabia—A fifth, of Pannonia Superior, (An¬ tonine ; now Gurhfeld in Cmnthia.—A iixth, Nonio- dunum Sufi on urn, the fame with Augujla Suejfionum. —A feyenth, JVeavWwMz/m of the Veromandui in Gallia Belgica, (Caefar) : now Noyau in the Lie of Prance, on the borders of Picardy. NOUN, fee Grammar, nw 7. ; and chapter ift in toto. NOVOGOROD tVEMCK 1, or Great NavogOrod, according to Mr Coxe, is one of the moft ancient ci¬ ties in Ruffia. It was formerly called Great Novcgorod, to diftinguilh it from other Ruffian towns of a fimilar appellation ; and now prefents to the attentive and in¬ telligent traveller a linking inftance of fallen grandeim. According to Neftor, the earlieft of the Ruffian hi- ftorians, it was built at the fame time with Kiof, namely, in the middle of the 5th century, by a Scla- vonian horde, who, according to Procopius, iffued from the banks of the Volga. Its antiquity is clearly proved by a pafiage in the Gothic hiltorian Jornandes, in which it is called Civitas Nova, or new town. We have little infight into its hiilory before the ninth cen¬ tury, when Ruric the firft great-duke of Ruffia redu¬ ced it, and made it the metropolis of his vail domi¬ nion. The year fubfequent to his death, which hap¬ pened in 879, the feat of government was removed, under his fon Igor, then an infant, to Kiof; and No- vogorod continued, for above a century, under the jurifdibtion of governors nominated by %’ie great dukes, until in 970, when Svatoflaf, the fon of !gor, created his third fon Vladimir duke of Novogorod : the latter, fucceeding his father in the throne of Ruffia, ceded the town to his fon Yarofiaf, who in 10^6 granted to the inhabitants very confideralle privileges, that laid the foundation of that extraordinary degree of iibeity which they afterwards gradually obtained. From this period Novogorod was for a long time governed by its own dukes : thefe fovereigns were at firft fubordinate N" 244. to the great-dukes, who refided at Kiof and Volodl- Novnwo, mir ; but afterwards, as the town increafed in popula- ri,» not diftruft a people who had compelled him to reign over them. He was not, like Romulus, fond of war and military expeditions, but he applied himfelf to tame the ferocity of his fubjedfs, to inculcate in their minds a reverence for the Deity, and to quell their dif- fenAons by dividing all the citizens into different claf- fes. He eftablifhed different orders of priefts, and taught the Romans not to worfhip the Deity by images; and from his example no graven or painted flatues ap¬ peared in the temples or fandtuaries of Rome for the fpace of 160 years. He encouraged the report that was fpread of his paying regular vilits to the nymph Egeria, and made ufe of her name to give fandfion to the laws and inftitutions which he had introduced. He eftablifh- ed the college of the vellais, and told the Romans that the fafety of the empire depended, upon the prefervation of the facred ancyle or fliitld, which, as was generally be¬ lieved, had dropped from heaven. He dedicated a temple to Janus, which, during his whole reign, remained (hut as a mark of peace and tranquillity at Rome. After a reign of 42 years, in which he had given every pof- Able encouragement to the ufeful arts, and in which he had cultivated peace, Numa died in the year of Rome 82. Not only the Romans, but alfo the neigh- bouring nations, were eager to pay their laft offices to a monarch whom they revered for his abilities, mode¬ ration, and humanity. He forbad his body to be burnt according to the cuftom of the Romans ; but he ordered it to be buried near mount Janiculum, with many of the books which he had written. Thefe books were accidentally found by one of the Romans, about 40a years after his death ; and as they contained nothing new or interefting, but merely the reafons why he had made innovations in the form of worfhip and in the re¬ ligion of the Romans, they were burnt by order of the fenate. He left behind him one daughter called Pompilia, who married Numa Marcius, and became the mother of Ancus Marcius the fourth king of Rome. Some fay that he had alfo four fons ; but this opinion is ill- founded. The principal laws of king Numa, mentioned by different authors, are, t. That the gods fhould be worfhipped with corn and a faked cake. 2. That whoever knowingly killed a free man, fhould be held as a parricide. 3. That no harlot fhould touch the altar of Juno; and if fhe did, that fhe fhould facriAce an ewe-lamb to that goddefs, with dilhevelled hair. 4. That whoever removed a land-mark fhould be put to death. 5. That wine fhould not be poured on a funeral pile, &c. NUMANTIA, a very noble city, the ornament of the Hither Spain, (Florus) ; celebrated for the long' war of 20 years which it maintained againft the Ro¬ mans. The bafenefs and injuflice of the Romans during this war was truly difgraceful to them, and altogether unworthy of a great and powerful people. The inha¬ bitants obtained fome advantages over the Roman forces, till Scipio Africanus was empowered to Aniflt the war and to fee the deftru&ion of Numantia. He began the Aege with an army of 60,000 men, and was bravely oppofed by the beAeged, who were no more than 4000 men able to bear arms. Both armies be¬ haved with uncommon valour, and the courage of the Nuraantines was foon changed into defpair and fury. 3 Their which is fo near the Gothic that it foon deviated into that letter ; fo u having the corner made round, it ftood thus I0> and then eafily deviated into D. C alfo became a plain C by the fame means ; the fingle reftangle which denoted 50, \vas, without alte¬ ration, a capital L ; the double acute angle was an X ; the fingle acute angle a V confonant ; and a plain fingle ftroke, the letter I. ; and thus thefe feveu let¬ ters, M, D, C, L, X, V, I, became numerals. Numeral Chat otters of the Arabs, are thofe figures which are now ufed in all the operations of arithmetic in every nation of Europe We have elfewhere drown that the Arabs derived the ufe of them mod probably from India, (See Arith metic, N° 5 ) t his opi¬ nion, however, though very generally received, has been controverted with fome ingenuity A writer in the Gentleman s Magazine, at a period when that mil. cellany was in its higheft reputation, thus endeavours to prove that the Arabs derived their notations from the Greeks “I maintain (fays he) that the Indians received their numeral charafters from the Arabians, and the Arabians from the Greeks, as from them they derived all their learning, which in fome things they improved, but for the moft part have altered. The nu¬ merical figures which they received from the Greeks are proofs of this alteration ; which, is fo great, that without particular attention one can fcarce difeover in them the veftiges of their origin. But when we com¬ pare them carefully, and without prejudice, we find in them manifeft traces of the Greek figures. The Greek numerical figures were no other chan the letters of their alphabet. A fmall ftroke was the mark of unity. Ths B,being abridged of its two extremities, produced the 2. If you incline the 7 a little on its left fide, and cut off its foot, and make the left horn round towards the left fide, you will produce a 3 ; the 4 makes the 4, by 4 jailing; N U M [ 144 ] 'Hamenl rafing tlie tight leg perpendicularly, and lengthening very well with us. -CharaiSers a belew the bafe, and lengthening the bafeon 'Numicia t^ie £ f°rrn8 t^ie 5’ turning the low- ■ eft ferrwcircle towards the right, which before was turned towards the left fide. The number 5 forms the 6 by having its head taken off, and its body rounded. Z, by taking away the bafe, makes the 7. If we make the top and bottom of H round, we fhall form r.n 8. The e is the 9 with very little alteration. The cypher o was only a point, to which one of the figures was added to make it ftand for ten times as much. It was neceffary to mark this point very ftrongly; and in order to form it better, a circle was made, which was . filled up in the middle ; but that circumftance was afterwards negledfed. Theophanes, an hiftovian of Conf^mtinople, who lived in the ninth century, fays exprefsly, that the Arabians retained the Greek tigures, having no chara&ers in their language to reprefent r.ll the numbers. The Greeks obferved In their numbers the decuple progreffion, which the Arabians have retained. Certain chara&ers are found in the Greek alphabet, which are not ufed in reading, but only in calculation, and for this reafon they are ftyled x Jt’mes, that is to fay, notes, marks, in order to diftinguifh them from letters. The number 6 derives its form from one of thefe- epifemes, which was called isnvnfjuai This epifeme forms the letter F among the iEo- lians and among the Latins. This was called the Digamma, fo ftyled from its figure, which feems to have been one r placed upon another. That this reafoning is plaufible will hardly be que- ftioned ; but whether it be conclufive our readers muft determine. Tt has not convinced ourfelves ; but through the whole of this work we wifh to ftate can¬ didly the different opinions held on every fubjeft @f curiofrty and ufefulnefs. NUMERATION, orNoTArroN,in arithmetic, the art of exprefilng in characters any number propofed in words, or of txpreffing in words, any number propofed in chambers. See Arithmetic, n* 7. NUMERICAL, Numerous, or Numeral, fome- thing belonging to numbers ; as numerical algebra is that which makes ufe of numbers, inftead of letters of the alphabet.—Alfo numerical difference is that by which one man is dirtinguifhed from another. Hence a thing is faid to be numerically the fame, when it is fo in the ftrhfteft fenfe of the word. NUMIDA, in ornithology, a genus belonging to the order of gallime. On each fide of the head there is a kind of coloured flefhy horn ; and the beak is furnifhed with cere near the noftrils. The fpeciescail ed mcleagris, err Guinea hen, is a native of Africa. It is larger than a common hen Its body is floped like that of a partridge, and its colour is all over a dark grey, very beautifully fpotted with fmall white fpecks ; there is a black ring round the neck ; its head is red- difti, and it is blue under the eyes. They naturally herd together in large numbers, and breed up their young in common ; the females taking care of the broods of others, as well as of their own. Barbuf in¬ forms us, that in Guinea they go in flocks of 200 or 300, perch on trees, and teed on warms and graftoppers ; that they are run down and taken by dogs; and that their fleft is tender and tweet, gene rally white, though fometimes black. They breed N0 244. Numidj, Nj nndia. N U M Mr Latham -obferves, “ that the native place of this bird is, without doubt, Africa,and that it is the meleagris of old authors. It is fuppofed originally to have come from Nubia, and was efteem- ed in the Roman banquets. It ha's been met with wild in flocks of two or three hundred by various tra¬ vellers. Dampier'found them in numbers in the ifiand cf Mayo ; and Forfter fpeaks of them as numerous at jag0? but they have been tranfported into the Weft Indies and America, and are now in a wild ftate in thofe places, as well as domefticated.” The white-breafted one is a mere variety, of which thep; are many : it is mo fly found in Jamaica. The mitred, or numida mitrata, is a different and not a common fpecies : it inhabits Madagafear and Gui¬ nea. . Pallas feems to think that it "may be the bird mentioned by Columella, as differing from the com¬ mon one; and will account for Pliny’s havinT thought the numida and meleagris to be different birds. The third fpecies which Mr Latham mentions is the crefted, or numida criftata. This fpecies like- wife inhabits Africa. Perhaps it may have fome re- htion to the crefted fort which Marcgrave mentions to have feen, and which came from Sierra Leon. This had a kind of membranous collar about the neck, was of a bluift aft-colour, and had a large roundift black ere ft. Buffon, who deferibes it at great length, calls it lapein- fade. Linnaeus and Gmel. call it Numida meleagris, &c. Ray and Will, call it gallus and gallina Guineenjts, &c. Mr Pennant contends, and feems to prove, that the pintados had been early introduced into Britain, at leaft prior to the year 1277. ^ut they feem to have been much negle&ed on account of the difficulty of rearing them ; for they occur not in our ancient bills of fare. They have a double caruncle at the chaps* and no fold at the throat. NUMLD1A, an ancient kingdom of Africa, bound¬ ed on the north by the Mediterranean Sea ; on the fouth by Gaetulia, or part of Libya Interior; on the weft by the Mulucha, a river which feparated it from Mauritania ; and on the eaft by the Tufca, another river which bounded it in common with Africa Pro¬ pria. Dr Shaw has rendered it probable, that the ri¬ ver which formerly went under the denominations of Malva, Malvana, Mulucha, and Molochath, is the fame with that now called Mullooiah by the Al¬ gerines ; in which c.fe, the kingdom of Numidiamuft have extended upwards of 500 miles in length ; its breadth, however, canrot be fo well afeertained ; but fuppofing it to have been the fame with that of the prefent kingdom of Algiers, in the narrowed: part it muft have been at leaft 40 miles broad, and in the wi- deft upwards of 100. r This country included two diftridls; one inhabited Ancient dr by the Majfyh, and the other by the Mafcefyli; the lat- vifion. ter being alfo called in after times Mauritania Cafarien- fis, and the former Numidia Propria. The country of the Maffyli, or, as fome call it, Terra Metagonitis, was feparated from the proper territory of Carthage by its eaftern boundary the river Tufca, and from the kingdom of the Mafaefyli, or Mauritania Caefarienfis, by the river Ampfaga. It feems to correfpond with that part of the province of Conftantina lying between the Zaine and the Wed al Kibeer, which is above 130 miles long, and more than xco broad. The fea-coalt MUM [ H5 1 N U M of this province is f *r the mod psrt mountainous and rocky, anfvvering to the appellation given to it by A* bulfeda, viz. El Eclwaa^ the high or lofty. It is far from being equal in extent to the ancient country of the Mafaefyli, which, Strabo informs us, was yet in¬ ferior to the country of the Mailyli. Its capital was Cirta, a place of very conllderable note among the an¬ cients. ts of ,’hut. 3 Great part ot the ni- ft Ty un- known. eop'.edhy The mod celebrated antiquarians agree, that the hed;fcend-£ra(c^ txtending from the ifthmus of Suez to the lake Tritonis, was chiefly peopled by the defeendants of Mizraim, and that the pofterity of his brother Put, or Phut, fpread themfelves all over the country be¬ tween that lake and the Atlantic ocean. To this no¬ tion Plerodotus gives great countenance : for he tells us, that the Libyan Nomades, whofe territories to the weft were bounded by the Triton, agreed in their cuftoms and manners with the Egyptians; but that the African, from that river to the Atlantic ocean, differed in almoft all points from them. Ptolemy men¬ tions a city called Putea near Adrametum ; and Pliny, a river of Mauritania Tingitana, known by the name of Fut> or Phut ; and the diftrift adjacent to this ri¬ ver was called Regio Phutevjis, which plainly alludes to the name of Phut. That word figniftes falter¬ ed, or dipper fed, which very well agrees with what Mela and Strabo relate of the ancient Numidians; fo that we may, without any feruple, admit the abori¬ gines of this country to have been the defeendants of Phut. The hiftory of Numidia, during many of the early ages, is buried in oblivion. It is probable, however, that as the Phoenicians were mafters of a great part of the country, thefe tranfaftions had been recorded, and generally known to the Carthaginians. King Jarbas probably reigned here as well as in Africa Propria, if not in Mauritania, and other parts of Lybia, when Di¬ do began to build Byrfa. It appears from Juftin, that about the age of Hero lotus, the people of this coun¬ try were called both JlfricarfS or Libyans and Numi¬ dians. Juftin likewife intimates, that about this time the Carthaginians vanquiftred both the Moors or Mau¬ ritanians and Numidians; in confequence of which they were excufed from paying the tribute which had hitherto been demanded of them. After the conclufron of the firft Punic war, the A- frican troops carried on a bloody conteft: againft their mafters the Carthaginians ; and the moft: arrive in this rebellion, according to Diodorus Siculus, were a part of the Numidian nation named Micatanians. This fo incenfed the Carthaginians, that after Hamilcar had cither killed or taken prikmers all the mercenaries, he font a large detachment to ravage the country of thofe Numidians. The commandant of that detachment ex¬ ecuted his orders with the utmoft cruelty, plundering the diftridt in a terrible manner, and crucifying all the prifoners without diftindlion that fell into his hands. This filled the reft with fuch indignation and refent- ment, that both they and their pofterity ever after¬ wards bore an implacable hatred to the Carthagi¬ nians. Hlft\)' of t^,e t^me t^e feCond Pun,c war, Syphax king »Syt hax aniicf the Mafx'fyli entered into an alliance with the Ro- M«lni.U’a. mans, and gave the Carthaginians a confi ’erable de¬ feat. This induced Gala, king of th? Maffyli, to Vol. XIII. Parti. conclude a treaty with the Carthaginians, in eonfe* quence of which his fon MafinilTa marched at the head of a powerful army to give Syphax battle. The con¬ teft ended in favour of Maftniffa ; 30,000 of the Maf- fofyli were put to the fword, and Syphax driven into Mauritania ; and the like bad fuccefs attended Syphax in another engagement, where his troops were entirely defeated and difpei'ed. Gala dying whilft his fon Mafmifta was acting at the head of the Numidian troops fent to the afllftance of the Carthaginians in Spain, his brother Defalces, according to the eftablilhed rules of fucceffion in'Nu¬ midia, took pofteffion of the Maflylian throne. Thai prince dying foon after his acceffion, Capufa his eldeft fon fucceeded him. But he did not long enjoy his high dignity ; for one Mezetulus, a perfon of the royal blood, but an enemy to the family of Gala, found means to excite a great part of his fubjefts to revolt. A battle foon took place between him and Capufa; in which the latter was flain with many of the nobility, and his army entirely defeated. But though Mezetulus thus became pofteffed of the fovereignty, he did not think proper to affume the title of king, but ftyled himfelf guardian to Lacumaces, the furvi- ving fon of Defalces, wPom he graced with the royal title. To fupport himfelf in his ufurpation, he mar¬ ried the dowager of Defalces, who was Hannibal’s niece, and confequently of the moft powerful family in Carthage. In order to attain the fame end, he lent ambaffadors to Syphax, to conclude a treaty of al¬ liance with him. In the mean time Mafiniflh, recei¬ ving advice of his uncle’s death, of his coufin’s ftaugh- ter, and of Mezetulus’s ufurpation, immediately paf- fed over to Africa, and went to the court of Bocchar king of Mauritania, to folicit fliccours. Bocchar, fenfible of the great injuftice done Mafmiffa, gave him a body of 400c Moors to efcort him to his do¬ minions. His fubje&s, having been apprifed of his approach, joined him upon the frontiers with a party of 500 men. The Moors, in purfuance of their orders, returned home, as foon as Mafinifta reached the con¬ fines of his kingdom. Notwithftanding which, and the fmall body that declared for him having acciden¬ tally met Lacumaces at Thapfus with an efcort going to implore Syphax’s affiftance, he drove him iiuo the town, which he carried by aftault, after a faint reft it*. However, Lacumaces, with many of his men, Nunufti*. found means to efcape to Syphax. The fame of this exploit gained Maiinifla great credit, infomuch that the Numidians flocked to him from all parts, and, amongft the reft, many of his father Gala’s veterans, who prefied him to make a fpeedy and vigorous pufti for his hereditary dominions. Lacumaces having join¬ ed Mezctulus with a reinforcement of Maflhefylians, which he had prevailed upon Syphax to fend to the af~ fiftance of his ally, the ufurper advanced at the head of a numerous army to offer Mafiniffa battle; which that prince, though much inferior in numbers, did not decline. Hereupon an engagement enfued ; which, notwithftanding the inequality of numbers, ended in the defeat of La’cumaces. The immediate confequence of this viftory of Mafiniffa was a quiet and peaceable poffeffion of his kingdom ; Mezetulus and Lacumaces, with a few that attended them, flying into the territo¬ ries ©f Carthage. However, being apprehenfive that T he N U M [ Nutnidia. he (hould be obliged to fuftam a war agalnft Syphax, —v " J^e offered to treat Lacumaces with as many marks of diftinftion as his father Gala had Defalces, provided that prince would put himfelf under his protection. He alfo promifed Mezetulus pardon, and a reftitution of all the effefts forfeited by his treafonahle conduct, if he would make his fubmiffion to him. L>otli of them readily complied with the propofal, and immediately returned home; fo that the tranquillity and repofe of Numidia would have been fettled upon a folid and lalt- ing foundation, had not this been prevented by _Af- drubai, who was then at Syphax’s court. He infi- nuated to that prince, who was difpofed to live ami¬ cably with his neighbours, “That he was greatly miftaken, if he imagined Mafiniffa would be fatisfied with his hereditary dominions. I hat he was a prince of much greater capacity and ambition, than either his father Gala, his uncle Defalces, or any of his fa¬ mily. That he had difcovered in Spain marks of a moft rare and uncommon merit. And that, in fine, tinlefs his rifing flame was extinguiflied before it came to too great a head, both the Maffcefylian and Cartha¬ ginian Hates would be infallibily confirmed by it.^ Sy¬ phax, alarmed by thefe fuggeftions, advanced with a numerous body of forces into a diftrift, which had long been in difpute between him and Gala, but was then in poffeffion of Mafiniffa. This brought on a general adlion between thefe two princes; wherein the latter was totally defeated, his army difperfed, and he himfelf obliged to fly to the top of mount Balbns, at¬ tended only by a few of his horfe. Such a decifive battle at the prefent jun&ure, before Mafiniffa was fixed in his throne, could not but put Syphax in¬ to poffeffion of the kingdom of the Maffyli. Mafi¬ niffa in the mean time made nodturnal incurfions from his poll; upon mount Balbus, and plundered all the adjacent country, particularly that part of the Car¬ thaginian territory contiguous to Numidia. This di- iiridt he not only thoroughly pillaged, but likewife kid wafte with fire and fword, carrying off from thence an immenfe booty, which was brought by fome merchants, who had put into one of the Carthaginian ports for that purpofe. In fine, he did the Carthagi¬ nians more damage, not only by committing fuch dreadful devaftations, but by maffacring and carrying into captivity vail numbers of their fubjedts on this occafion, than they could have fuftained in a pitched battle, or one campaign of a regular war. Syphax, at the preffing and reiterated inftances of the Cartha¬ ginians, fent Bocchar, one of his moft active com¬ manders, with a detachment of 4000 foot, and 2000 horfe, to reduce this peftilent gang of robbers, pro- mifing him a great reward if he could bring Mafinifla either alive or dead. Bocchar, watching an oppor¬ tunity, furprifed the Maffylians, as they were ftrag- gling about the country without any order or difci- pline ; fo that he took many prifoners, difperfed the reft, and purfued Mafiniffa himfelf, with a few of his men, to the top of the mountain where he had before taken poll. Confidering the expedition as ended, he not only fent many head of cattle, and the other booty that had fallen into his hands, to Syphax, but like¬ wife all the force, except 500 foot and 200 horfe. With this detachment he drove Mafiniffa from the furamit of the hill, and purfued him through feveral 146 ] N U M narrow paffes and defiles, as far as the plains of Clu. Numidia. pea. Here he fo furrounded him, that all the Maf- r— fylians, except four, were put to the fword, and Ma¬ finiffa himfelf, after having received a dangerous wound, efcaped with the utmoft difficulty. As this was effected by oroffing a rapid river, in which attempt two-of his four attendants perilhed in the fight of the detachment that purfued him, it was rumoured all over Africa, that Mafiniffa alfo was drowned ; which gave inexpreffible pleafure to Syphax and the Cartha- ginians. For fome time he lived undifcovered in a cave, where he was fupported by the robberies of the two horfemen that had made their efcape with him. But having cured his wound by the application of fome medicinal herbs, he boldly began to advance to¬ wards bis own frontiers, giving out publicly that he intended once more to take poffeffion of his kingdom. In his march he was joined by about 40 horfe, and, foon after his arrival amgngft the Maflyli, fo many people flocked to him from all parts, that out of them he formed an army of 6000 foot and 4coohorfe. With thefe forces, he not only reinftated himfelf in the pof¬ feffion of his dominions, but likewife laid waffe the borders of the Maffaefyli. This fo irritated Syphax, that he immediately affembled a body of troops, and encamped very commodioufly upon a ridge of moun¬ tains between Cirta and Hippo. His army he com¬ manded in perfon ; and detached his fon Vermina, with a confiderable force, to take a compafs, and attack the enemy in the rear. In purfuance of his orders, Ver¬ mina fet out in the beginning of the night, and took poll in the place appointed him, without being difco¬ vered by the enemy. In the mean time Syphax de¬ camped, and advanced towards the Maflyli, in order to give them battle. When he had poflefled himfelf of a rifing ground that led to their camp, and con¬ cluded that his fon Vermina mufthave formed the am- bufcade behind them, he began the fight. Mafiniffa being advantageouffy polled, and his foldiers djftin- guifhing themfelves in i,*'. extraordinary manner, the difpute was long and bloody. But Vermina unex- peftedly falling upon their rear, and by this means obliging them to divide their forces, which were fcarce able before to oppofe the main body under Sy¬ phax, they were foon thrown inta confufion, and for¬ ced to betake themfelves to a precipitate flight. All the avenues being blocked up, partly by S^phax and partly by his fon, fuch a dreadful flaughter was made of the unhappy Maffyli, that only Mafiniffa himfelf,. with 60 horfe, efcaped to the Leffer Syrtis. Here he remained, betwixt the confines of the Carthaginians and Garamantes, till the arrival of Laelius and the Ro¬ man fleet on the coaft of Africa. What happened immediately after this jun&km with the Romans, be¬ longs to the article Rome. ' It will be fufficient therefore in this place to ob- ferve, that, by the affiftance of Laelius, Mafiniffa at laft reduced Syphax’s kingdom. According to Zonaras, Mafiniffa and Scipio, before the memorable battle of Zama, by a ftratagem deprived Hannibal of fome ad¬ vantageous pofts ; which, with a folar eclipfe happening during the heat of thea&ion, and not a little intimida¬ ting the Carthaginian troops, greatly contributed to the vi&ory the Romans obtained. At the conclufion therefore of the fecond Punic war, he was amply re¬ warded / N U M [ 147 ] ' N U M wattled by the Romans for the important fervices he MafinilTa their defign. This not a little chagiined himj Num.tha had done them. As for Syphax, after the lofs of his as it was contrary to the former praihee or the o- ^ dominions, he was kept in confinement for fome time mans ; who in the preceding war had communicate Mafinifia at Alba; from whence being removed in order to their intentions to him, and confulted him ,on all oc-dfpleafed grace Scipio’s triumph, he died at Tibur in his way calions. When, therefore, the confuls app ic to 11m to Rome. Zonaras adds, that his corpfe was decent- a body of his troops to aft in conceit wit 1 t eir orces, ly interred ; that all the Numidian prifoners were re- he made anfwer, “ That they fhould have a reinforce Leafed ; and that Vermina, by the affiftance of the Ro- ment from him when they Rood in need o it. t mans, took peaceable poffefiion of his father’s throne, could not but be provoking to him to con 1 ei , t ia_ However, part of the Mafisefylian kingdom had been after he had extremely weakened the Cart aginians, before annexed to Mafiniffa’s dominions, in order to and even brought them to the brink of rum, is pre- reward that prince for his fingular fidelity and clofe tended imperious friends fhould come to reap t le ruitj attachment to the Romans. of his vidory, without giving him the leail intelligence This feems to be countenanced by the epitomizer of of it. _ . . L,ivy, who gives us fufficiently to underftand, that Sy- However, his mind foon returned to Us nature ias, phax’s family, for a confiderable time after the con- which was in favour of the Romans. Finding ioen clufion of the fecond Punic war, reigned in one part approaching, he fent to Aimilianus, then a tri une in of Numidia. For he intimates, that Archobarzanes, the Roman army, to defire a vifit from him. , at,- Syphax’s grandfon, and probably Vermina’s fon, ho- propofed by this vifit, was to invelt him wit u vered with a powerful army of Numidians upon the powers to dilpofe of his kingdom and eftate as e ou Carthaginian frontiers a few years before the begin- think proper, for the benefit of his children. ^ e ning of the third Punic war. This he feems to have high idea lie had entertained of that young hero s a 1- done, either in order to cover them, or to enable the lities and integrity, together with his gratituue an ai- Carthaginiaris to make an irruption into Mafinifla’s fedion for the family into which he was aoopte , in- territories. Cato, howrever, pretended that thefe for- duced him to take this ftep. But, believing that eat gut jeavefl ces, in conjundion with thofe of Carthage, had a de- would not permit him to have a perfonal conferenceevery fign to invade the Roman dominions, which he urged with ./Emilianus upon this fubjed, he informed his wi Ctothechl- as a reafon to induce the confcript fathers to defiroy and children in his lait moments, that he had impower F0^1 ” the African republic. him to difpofe in an abfolute manner of all lus poi Nothing is further requifite, in order to complete fefiions, and to divide his kingdom ainongft nis fons. the hiflory of this famous prince, than to exhibit to To which he fubjoined, “ 1 require, tuat whatever our readers view fome points of his condud towards ^Emilianus may decree, fhall be executed as pundua the decline, and at the clofe, of life ; the wife difpo- ly as if I myfelf had appointed it by my will. Pla- fitions made after his death by iEmelianus, in order ving uttered thefe words, he expired, at about 90 yeais to the regulation of his domeftic affairs ; and fome of age. _ particulars relating to his charader, genius, and habit rlhis prince, during his youth, had met with urange of body, drawn from the moll celebrated Greek and reverfes of fortune. However, fays Appian, being Roman authors. fupported by the Divine protedion, he enjoyed an un- By drawing a line of circumvallation around the Car- interrupted courfe of profperity for a long feries of thaginian army under Afdrubal, polled upon an emi- years. His kingdom extend d from Mauritania to nence, MafinilTa cut off all manner of fupplies from the weftern confines of Cyrenaica ; from whence it an¬ them ; which introduced both the plague and famine pears, that he was one of the moil powerful princes of into their camp. As the body of Numidian troops Africa. Many of the inhabitants ©f this vail trad he employed in this blockade was not near fo numerous as civilized in a wonderful manner, teaching them to cul- the Carthaginian forces, it is evident, that the line tivate their foil, and to reap thofe natural advantages here mentiened mull have been extremely ftrong, and which the fertility of fome parts of their country of- consequently the effed of great labour and art. The fered them. He was of a more robuft habit of body Carthaginian*, finding themfelves reduced to the laft than any of his cotemporaries, being blefled vyitu the extremity, concluded a piece upon the following greatefl health and vigour ; which was doubtlefs owing terms, which Mafiniffa didated to them : 1. That to his extreme temperance, and the toils he incei- they fliould deliver up all deferters. 2. That they fantly fuftained. We are informed by Polybius, that fhould recal their exiles, who had taken refuge in his fometimes he flood upon the fame Ipot of ground from dominions. 3. That they fhould pay him 5000 talents morning till evening, without the leaf! motion, and at of filver within the fpace of 50 years. 4. That their others continued as long in a fitting pofture. . He foldiers fhould pals under the jugum, each of them would remain on horfeback for feveral days and nights carrying off only a fingle garment. As Mafiniffa him- together, without being feniible of the lealt fatigue, felf, though between 80 and 90 years of age, con- Nothing can better evince the ilrength of iiis conflitu- duded the whole enterprife, he mull have been ex- tion, than his youngefl fon, named St embalm Sihcmbciy tiemely well verfed in fortification, and other branches or Stembanusy who was but four years old at his de- of the military art. His underflanding likewife he ceafe. Though 90 years of age, he performed all the muff have retained to the lafl. This happened a fhort exercifes ufed by young men, and always rode without time before the beginning of the third Punic war. See a faddle. Pliny tells us, that he reigned above 60 Carthage. years. He was an able commander, and much facili- Soon after, the confuls landed an army in Africa, in tated the redudion of Carthage. Plutarch from Po* order to lay liege to Carthag-e, without imparting to lybius obferves, that the day after a great vidory won T 2 over N U M [ 148 ] Numidia. over the Carthaginians, MufinifTa was feon fitting at ury and pleafure. l| "”'v " the door of his tent, eating a piece of brown bread. Suidas relates, that to the laft he could mount his horfe without any afliilance. According to Appian, he left a numerous well dilciphned army, and an inv menfe quantity of wealth, behind him. Mafiniffa, before his death, gave his ring to his el- deft fon Micipfa ; but left the diftribution of all his other effefis and pofieftions amongft his children en¬ tirely to JEmilianus. Of 54 fons that furvived him, only three were legitimate, to wit, Micipfa, Gulufla* and Maftanabai. jiEmilianus, arriving at Cirta after he had expired, divided his kingdom, or rather the government of it, amongft thefe three, though to the others he gave confiderable polTefiions. To Micipfa, who was a prince of a pacific difpofition, and the eldeft fon, he afiigned Cirta, the metropolis, for the place of his refidence, in exclufion of the others. Gulufia, the next to him, being a prince of a military genius, had the command of the army, and the Iran failing of all affairs relating to peace or war committed to his care. And Manaftabal, the youngeft, had the admi- piftration of juttice, an employment fuitable to his education, allotted him. They enjoyed in common the immenfe treafures Mafiniffa had amaffed, and were all of them dignified by iEmilianus with the royal title. After he had made thefe wife difpolitions, that young nobleman departed from Cirta, taking with him a body of Numidian troops, under the conduct of Gu- luffa, to reinforce the Roman army that was then ac- ting againft the Carthaginians. Maftanabai and Guluffa died foon after their father, as appears from the exprefs teftimony of Salluft. We find nothing more remarkable of thefe princes, befides what has been already related, than that the latter con¬ tinued to affift the Romans in the thhd Punic war, and that the former was pretty well verfed in the Greek language. Micipfa therefore became foie poffeffor of the kingdom of Nmnidia. In his reign, and under the con- fuiate of M. Plautius Hypfasus and M. Fulvius Flaccus, according to Orofius, a great part of Africa was co¬ vered with locutts, which deftroyed all the produce of the earth, and even devoured dry wood. But at laft they were all carried by the wind into the African fea, out of which being thrown in vail neaps upon the ftiore, a plague enfued, which Fvept away an infinite number of animals of all kinds. In Numidia only 800,000 men perifhed, and in Africa Propria 200,000; amongft the red, 30,000 Roman foldiers quartered in and about Utica for the defence of the laft province. At Utica, in particular, the mortality raged to fuch a degree, that 1500 dead bodies were carried out of one gate in a day. Micipfa had two fons, Adherbal and Hiempfal, whom he educated in his palace, to¬ gether with his nephew Jugurtha. That young prince was the fon of Maftanabai; but his mother having been only a concubine, Mafiniffa had taken no great notice of him. However, Micipfa confidering him as a prince of the blood, took as much care of him as he did of his own children. ^ Jugurtha poffeffed feveral eminent qualities, which Hiftory ef gained him univerfal efteem. He was very handfome, Jugunha. endued with great ftrength of body, and adorned with the fineft intelledlual endowments. He did not devote himfelf, as young men commonly do, to a life of lux • N U M He ufed to exercife himfelf, with Numidia. perions of his age, in running, riding, hurling the ~—v— javelin, and other manly exercifes, fuited to the mar¬ tial genius of the Numidians ; and though he furpaffed all his fellow fportfmen, there was not one of them but loved him. The chace was his only delight ; but it was that of lions and other lavage beads. Salluft, to linilh his charadler, tells us, that he excelled in all things, and fpoke very little of himfelf. So confpicuous an affemblage of fine talents and per- fe&ions, at firft charmed Micipfa, who thought them an ornament to his kingdom. However, he foon be¬ gan to reflect, that he was confiderably advanced in years, and his children in their infancy ; that mankind naturally thirfted after power, and that nothing was capable of making men run greater lengths than a vi¬ cious and unlimited ambition. Thefe reflections foon excited his jealoufy, and determined him to expofe Ju¬ gurtha to a variety of dangers, fome of which, he en¬ tertained hopes, might prove fatal to him. In order to this, he gave him the command of a body of forces which he fent to affift the Romans, who were at that time befieging Numantia in Spain. But Jugurtha, by his admirable conduCt, not only efcaped all thofe dan¬ gers, but likewife won the efteem of the whole army, and the friendfhip of Scipio, who fent a high charac¬ ter of him to his uncle Micipfa. However, that ge¬ neral gave him fome prudent advice in relation to his future conduCt ; obferving, no doubt, in him certain fparks of ambition, which, if lighted into a flame, he apprehended might one day be productive of the moll fatal confequences. g Before this Inft expedition, Micipfa had endeavour- dreaded ed to find out fome method of taking him oft' private-hy ly ; but his popularity amongft the Numidians obliged Mafiaiffa. that prince to lay abide all thoughts of this nature. After his return from Spain the whole nation almoft adored him. The heroic bravery he had (hown there, his undaunted courage, joined to the utmoft calmnefs of mind, which enabled him to preferve a juft medium between a timorous forefight and an impetuous ra!h- nefs, a circumftance rarely to be met with in perfons of his age, and above all the advantageous teftimo- nials of his conduct given by Scipio, attracted an uni¬ verfal efteem. Nay, Micipfa himfelf, charmed with the high idea the Roman general had entertained of his merit, changed his behaviour towards him ; refol- ving, if poffible, to win his affeCtion by kindnefs. Fie therefore adopted him, and declared him joint heir with his two fons to the crown. Finding, fome few years afterwards, that his end approached,'he fent for all three to his bed-fide ; where, in the prefence of the whole court, he defired Jugurtha to recoiled with what extieme tendernefs he had treated him, and confequent* ly to confider how well he had deferved at his hands. He then intreated him to proteCf his children on all 9 occafibns ; who, being before related to him by the^^n^ ties of blood, were now by their father’s bounty be- encrufUhim come his brethren. In order to fix him the more firmly with thj in their intereft, he likewife complimented him upon Cire of his his bravery, acldrefs, and confummate prudence. Heclu^ieI1‘ further inlinuated, that neither arms nor treafures con. ftitute the ftrength of a kingdom ; but friends, who are neither won by arms nor gold, but by real fervices, and an inviolable fidelity. “ Now where (continued 5 N U M [ >49 1 N U M 10 Ohe of whom he murders, and drives out the other. Momidia. he) can we find better friends than in brothers ? And —■ v how can that man who becomes an enemy to his rela¬ tions, repofe any confidence in, or depend upon ilran- n-ers ?” Then addreffmg himfelf to Adherbal and tii- empfal, “ And you (laid he) 1 enjoin always to pay the higheft reverence to Jugurtha. Endeavour to imi¬ tate, and if poffible furpafs, his exalted merit, that the world may not hereafter obferve Micipfa’s adopted fon to have refie&ed greater glory upon his memory than his own children.” Soon after, Micipfa, who, accord¬ ing to Diodorus, was a prince of an amiable chai after, expired. Though Jugurtha did not believe the king to fpeak his real fentiments with regard to him, yet he feemed extremely pkafed with fo gracious a fpeech, and made him an anfwer fuitable to the occafion. However, rhat prince at the fame time was determined within himfelf to put in execution the fcheme he had formed at the liege of Numantia, which was fuggeded to him by fome faftious and abandoned Roman offi¬ cers, with whom he there contrafted an acquaintance. The purport of this fcheme was, that he fnould extort the crown by force irom his two coufins, as foon as their father’s eyes were clofed ; which they infinuated might eaiily be effefted by his own valour, and the venality of the Romans. Accordingly, a fhort time after the old king’s death, he found means to afiaffi- nate Hitmpfal in the city of Thirmida where his trea- iures were depolited, and drive Adherbal out of his dominions. That unhappy prince found himfelf obli¬ ged to fly to Rome, where he endeavoured to engage the confcript fathers to efpoufe his quarrel; but, not- withfianding the juftice of his caufe, they had not vir¬ tue enough effectually to fupport him. Jugurtha’s am- baffadors, by diflributing vail fums of money amongft the fenators, brought them fo far over, that a majority palliated his inhuman proceedings. This encouraged thole m’unlters to declare, that Hiempfal. had been killed by the Numidians on account of his exceffive cruelty ; that Adherbal was the aggi-eifdr in the late troubles ; and that he was only chagrined becaufe he could not make that havoc among his countrymen he would willingly have done. 1 hey therefore intreated the fenate to form a judgment of jugurtha’s behaviour in Africa from his conduft at Numantia, rather than from the iuggeflions of his enemies. Upon which, by far the greateft part of the fenate difeovered themfelves .prejudiced in his favour. A few, however, that were not loll to honour, nor abandoned to corruption, in¬ filled upon bringing him to condign punifhment. But as they could not prevail, he had the bell part of Nu- ir.idia allotted him, and Adherbal. was forced to reft fatisfied with the other. ii Jugurtha finding now by experience that every thing Vtnality of was venai at Rome, as his friends at_ Numantia had thc Ro* before informed him, thought he might purfue his towering piojefts without any obftruftion fiom that quarter. He therefore, immediately after tne laft di- vilioti of Micipfa’s dominions, threw off the mafic, and attacked his coufin by open force. As Adherbal was a prince of a pacific difpofition, and almofl in all re- fpefts the leverfe of Jugurtha, he was by no means a match for him. The latter therefore pillaged the for¬ mer’s territories, ftormed feveral of his tortieffes, and over-ran a good part of his kingdom without oppofi- tioa. Adherbal, depending, on the friendfnip. of the aiaus Romans, which his father in his laft moments allured N^nh3-, hini would be a llronger fupport to him tnan ad th.. troops and treafures in the univerfe, difpatched depu¬ ties to Rome to complain of thefe hoflilities. But whilft he loft his time in fending thither fruitlefs depu¬ tations, Jugurtha overthievv him in a picched battle, broiling himfelf with other ftates, when he could eafi-. ly avoid this ; that it was .much eafier to begin a war than to end it, which it was in the power of the vidfor alone to do; that, in fine, he would by no means con- fult the intereft of his fubjefls if he followed the defpe- rate fortunes of Jugurtha.” To which Bocchus re¬ plied, “ That for his part there was nothing he wifil¬ ed for more than peace ; but that he could not help pi¬ tying the deplorable condition of Jugurtha; thqt if the Romans, therefore, would grant that unfortunate prince the fame terms they had offered him, he would bring about an accommodation.” Metellus let the Mauritanian monarch know, that it was not in his power to comply with what he defired. However, he took care to keep up a private negociation with him till the new conful Marius’s arrival. By this conduct he ferved two wife ends. Firft, he prevented thereby Bocchus from coming, to a general a&ion with hiu 6 troops; N U M [ ijj 1 N U M 'KuniMia. troops* which was the very thins? {ugurtha defired, on this occafion fcems here to be afitgned 5 though we Numkli^ i as hoping that this, whatever tlie‘event might be, are told by Salluft, in conformity to the Roman ge- * would render a reconciliation betwixt him and the nius, that neither avarice nor refentment prompted Romans impracticable. Secondly, this inaaion en- *him to fo barbarous an adion, but only a defire to abled him to difcover fomething of the genius and ftrike a terror mto the Numidians. difpofition of the Moors; a nation of whom the Ro- The Numidians, ever after this exploit, dreaded the mans* till then, had fcarce formed any idea ; which, very name of Marius ; who now, in his own opinion, he imagined, might be of no fmall fervice, either to had eclipfed the glory of all his predeceffor’s great at- himfelfor his fuccefibrs, in the future profecution of chievements, particularly the reduaion of J hala, a the war. c‘ty> 'n ftrength and fituation, nearly refembling Cap* Jugiirtha, being informed that Marius, with A fa. Following his blow, he gradually prefented him- numerous army, was landed at Utica, advifed Bocchus felf before moft of the places of ilrength in trie enemy 3 to retire, with part of the troops, to fome place of country ; many of which either opened their gates, or difficult accefs, whilft he himfelf took poll upon ano- were abandoned, at his approach, being terrified with ther iaacceffible fpot with the remaining corps. By what had happened to the unfortunate citizens of Cap- ^ this meafure, he hoped the Romans would be obliged fa. Others taken by force, he lajd in afhes ; and in • to divide their forces, and confequentiy be more ex- ffiort, filled the greateft part of Numidia with blood, pofed to his efforts and attacks. He likewife ima- horror, and confufion. I nen, after an obifinate de- gined, that feeing no formidable body appear, they fence, he reduced a cable that feemed impregnable, would believe the enemy in no condition to make head feated not far from Mulucha, where Jugurtha kept part again ft them ; which might occafion a relaxation of of his treafures. In the mean time, Jugurtha not be- difcipline, the ufual attendant of a too great fecurity, irtg able to prevail upon Bocchus, by his repeated and confequentiy produce fome good effedf. How- lolicitations, to advance into Numidia, where he found ever, he was difappointed in both thefe views. For himfelf greatly preffefi, was obliged to have re- Marius, far from fuffering a relaxation of rlifcipline to courfe to his ufiial method of bribing the Mauritanian take place, trained up his troops, which confifted minifters, in order to put that prince in motion. He chiefly of new levies, in fo perfeft a manner, that alfo promifed him a third part of his kingdom, pro- they were foon equal in goodnefs to any confular army vided they could either drive the Romans out of Afri* that ever appeared in the field. He alfo cut off great ca, or get all the Numidian dominions confirmed to numbers of the Gfletulian marauders, defeated many of him by treaty. Jugurtha’s parties, and had like to have taken that So confiderable a ceffion could not fail of engaging ‘He gains prince himfelf near the city of Cirta. Thefe advart- Bocchus to fupport Juguftha with his whole power, a great ad- tages, though not of any gieat importance, intimidated The two African monarchs therefore, having joined vantage Bocchus, who now made overtures for an accommoda- their forces, furprifed Marius near Cirta as he wasgo- over Jugur-tjon , tjie Rofrian3> not being fufficiently fatisfied ing into winter-quarters. The Roman general was lo of his fincerity, paid no great attention to them. In puflred on this occafion, that the barbarians thought .the mean time Marius pufhed on his conquefts, redn- themfelves certain of victory, and doubted not but they cing feveral places of lefs note, and at lail refolved to fhould be able to extinguifh the Roman name in Nu- jg befiege Capfa. That this enterprife might be con- midia. But their incaution and too great fecurity Ju«urth3 dufled with the greater fecrecv, he fuffered not the enabled Marius to give them a total defeat; which entirely de* lead hint of his defign to tranfpire, even amongft any was followed four days after by fo complete an over*teal:c of his officers. On the contrary, in order to blind them, throw, that their numerous army, conlifting of 90,000 he detached A. Manlius, one of his lieutenants, with men, by the acceffion of a powerful corps of Moors, fome light-armed cohorts, to the city of Lares, where commanded by Bacchus’s fon Volux, was entirely ruin- he had fixed his principal magazine, and depofited the ed. SyUa,Marius,slieiitenant,mo{teminently diftinguilh- miiitary chelt. Before Manlius left the camp, that ed himfelf in the laft action, which laid the foundation he might the more effeffeially amufe him, he inti- of his future greatnefs. Bocchus, now looking upon mated, that himfelf with the army fliould take the Jugurtha’s condition as defperate, and not being will- fame route in a few days: but inftead of that, he ing to run the riffi of lofing his dominions, fhovved a bent his march towards the Tanais, and in fix days difpofition to clap up a peace with Rome. However, time arrived upon the banks of that river. Here the republic gave him to underhand, that he muft not lie pitched his tents for a (hort time, in order to re- expedl to he ranked amongft its friends, till he had frelh his troops; which having done, he advanced delivered up into the conful’s hands Jugurtha, ^the in¬ to Capfa, and made himfelf inafter of it. As the veterate enemy of the Roman name. i he Maurita- fituation of this city rendered it extremely commo- nian monarch, having entertained an high idea of an clious to Jugurtha, whofe plan of operations, ever alliance with that ftate, refolved to fatisfy it in this fince the commencement of the war, it had exceed- particular; and was confirmed in his refolution by one jngiy favoured, he levelled it with the ground after Dabar, a Numidian prince, the fon of Maffugrada, it had been delivered up to the foldieis to be plunder- and defeended by his mother’s fide from Mafinifta. Fe¬ ed. The citizens likewife, being more ftrongly at- ing clolely attached to the Romans, and extremely tached to that prince than any of the other Numidians, agreeable to Bocchus on account of his noble diipofi- on account of the extraordinary privileges he indulged tion, he defeated all the intrigues of Afpar, Jugurtha’s them with, and of courfe bearing a more implacable minifter. Upon Sylla’s arrival at the Mauritanian hatred to the Romans, he put to the fword or fold court, the affair there feemed to he entirely fettled, for (laves. The true motive of the conful’s conduit However, Bocchus, who was for ever projecting new NJ 244. defign s, N U M f i,'3 1 N U M fugurtha. Kuttidia. defigns, and, like the reft of his countrymen, in the —-v higheft degree perfidious, debated within himfelf, whe¬ ther he fhould facrifice Sylla or Jugurtha, who were both then in his power. He was a long tisnc fluftua- ting with uncertainty, and combated by a contrariety of fentiments. The bidden changes which difplay- ed themfelves in his countenance, his air, and his whole perfon, evidently (bowed how ftrongly his mind was agitated. But at laft he returned to his firft de- fign, to which the bias of his mind feemed naturally to lead him. He therefore delivered up Jugurtha in¬ to the hands of Sylla, to be conduced to Marius ; who, by that fuccefsful event, happily terminated this dangerous war. The kingdom of Numidia was now reduced to a new form : Bocchus. for his important fervices, had the country of the Malftcfyli, contiguous to Mauritania, afligned him ; which, from this time, took the name of New Mauritania. Numidia Pro¬ pria, or the country of the Maffyli, was divided into • three parts; one of which was given to Hiempfal, an¬ other to Mandreftal, both defcendants of Mafiniffa ; and the third the Romans annexed to Africa Propria, or the Roman province adjacent to it. What became of Jugurtha after he had graced Marius’s triumph, at which ceremony he was led in chains, together with his two fons, through the ftreets of Rome, v/e have already laid before our readers. See Jugur.- *o THA' Trf.nfac Jugurtha’s two fons fbrvived him, but fpent their ions after lives in captivity at Venufia. However, one of them, he death of namej Qxyntas. was, for a (hort time, releafed from his confinement by Aponius, who befieged Acerrne in the war between the Romans and the Italian allies. That general brought this prince to his army, where he treated him as king, in order to draw the NumicKan forces off from the Roman fervice. Accordingly thofe Numidians no fooner heard that the ion of their old king was fighting for the allies, than they began to defert by companies ; which obliged Julius Csefar the conful to part with all his Numidian cavalry, and fend them back into Africa. Some few years after this event, Pompey defeated Cneius Domitius Ahenobar- bus, and Hiarbas one of the kings of Numidia, kill¬ ing 17,000 of their men upon the fpot. Not fatisfied with this vi&ory, that general purfued the fugitives to their camp, which he foon forced, put Domitius to the fword, and took Hiarbas prifoner. He then reduced that part of Numidia which belonged to Hiar¬ bas, who feems to have fucceeded Mandreftal above- mentioned ; and gave it to Hiempfal, a neighbouring Numidian prince, defeended from Mafiniffa, who had always oppofed the Marian fa&ion. Suetonius informs us, that a difpute happened be¬ tween Hiempfal and one Mafintha, a noble Numidian, whom, it is probable, he had in fome refpedt injured when Julius Caefar firft began to make a figure in the world. The fame author ^adds, that Caefar warmly efpoufed the caufe of Mafintha, and even grofsly in- fulted Juba, Hiempfal’s fon, when he attempted to vindicate his father’s conduct on this occafion. He pulled him by the beard, than which a more unpar¬ donable alliont could not be offered to an African. In firort, he fereened Mafintha from the infults and vio lence of his enemies; from whence a reafon may be af- Voe.XIH. Parti. C*far in¬ fults Juba. fiarned for Julia’s adhering fo clofely afterwards to the Numidia. Pompeian faftion. In confequence of the indignity Caefar had offered Juba and the difpofition it had occafioned, that prince feats one of did Ctefar great damacre in the civil wars betwixt him ' »fir’s and Pompey. By a ft rat agent he drew Curio, one Gf •ieuteu“Ilts* his lieutenants, into a general adtion, wh:eh it was his intered at that time to have avoided. He caufed it to be given out all over Africa Propria and Numidia, that he was retired into fome remote country at a great di- ftance from the Roman territories. This coming to Curio’s ears, who was then befieging Utica, it hin¬ dered him from taking the neceffary precautions * againft a furprife. Soon after, the Roman gene’-al re¬ ceiving intelligence that a fmall body of Numidians was approaching his camp, he put himfelf at the head of his forces in order to attack them, and, for fear they fhould efcape, began his march in the night, looking upon himfelf as lure of victory. Some of their advanced polls he furprifed afieep, and cut them to pieces ; which ftill farther animated him In fhort, about day-break he came up with the Numidians, whom he attacked with great bravery, though his men were then falling, and vaftly fatigued by their forced and precipitate march. In the mean time, Juba, who, immediately after the propagation of the rumour above-mentioned, bad taken care to march privately, with the main body of the Numidian army, to fupport the detachment fent before to decoy Curio, advanced to the relief of his men. The Romans had met with a great refillance before he appeared ; fo that he eafily broke them, killed Curio, with a great part of his troops, upon the fpot, purfued the reft to their camp, which he plundered, and took many of them prifoners. Moll of the fugitives, who endeavoured to make their efcape on board the fliips in the port of Utica, were either flain by the purfuers, or drowned. The re¬ mainder fell into the hands of Varus, who would have faved them ; but Juba, who arrogated to himfel? the honour of this vidlory, ordered moll of them to be put to the fword. This visftory infufed new life and vigour into the Juba over- Pompeian fa&ion, who thereupon conferred great ho- '•brown by nours upon Juba, and gave him the title of king of <*//’'a' ar‘ Numidia. But Caefar and his adherents declared him an enemy to the Hate of Rome, adjudging to Bocchus and Bogud, two African princes entirely in their in- tereft, the fovereignty of his dominions. Juba after¬ wards, unitin his for es with thofe of Scipio, reduced Caefar to great extremities, and would in all probabi¬ lity have totally ruined him, had he not been relieved by Publius Sittius. That general, having formed a confiderable corps, confifting of Roman exiles, and Mauritanian troops fent him by Bocchus, according to Dio, or, as Caefar will have it Bognd, made an irruption into Gaetulia and Numidia whillt Juba was employed in frica Propria. As he ravaged thefe countries in a dreadful manner, Juba immediately re¬ turned with the bell part of his army, to prefetve them from utter deftrudlion. However, Cajfar knowing his horfe to be afraid of the enemy’s elephants, did not think proper to attack Scipio in the abfence of the Numidian, till his own elephants, and a frelh rein¬ forcement of troops, hourly expe&ed, arrived from U Italy. * N U M [ >5 Numidra Italy. With this accellion of ftrengtll, he inugitu.. * hltnfelf able to give a good account, both 01 the Ro¬ man forces with which he was to cope, and the bar¬ barians. In the mean time Scipio difpatched reitera¬ ted expreffes to Juba to haften to his affiftance ; but could not prevail upon him to move out of Numidia, till he had promifed him the poffeffion of all the Ro¬ man dominions in Africa, if they could from thence expel Caefar. This immediately put him in motion ; fo that, having fent a large detachment to make head againft Sittius, he marched with the reft of his troops to affift Scipio. However, Caftar at laft overthrew Scipio, Juba, and Labienus, near the town of Tbap- fus,r and forced all their camps. As Scipio was the fir ft furprifed and defeated, Juba fled into Numid.a, without waiting for Cafar’s approach ; but the bo<.,y of the Numidians detached againft Sittius, having laen broken and diiperfed by that general, none of his fubjedls there would receive him. Abandoned there¬ fore to defpair, he fought death in a Angle combat with Petreius, and, having killed him, caufed himfelt to he difpatched by one of his Haves. Nurmdia After this decifive aftion, and the reduftion of A- reducedto frica Propria, Caefar made himfclf mafter of Numidia, the form ofvvhich he reduced to a Roman province, appointing province. Cr;fp,,s Salluftius to govern it in quality of proconful, with private inftruaions to pillage and plunder the in¬ habitants, and, by that means, put it out of their power ever to (hake off the Roman yoke. However, Bocchus and Bogud ftill preferved a fort of fovereign- ty in the country of the Maffsefyli and Mauritania, hnce the former of thofe princes, having deferted Cae¬ far, fent an army into Spam to affift the Pompeians ; and the latter, with his forces, determined vi&ory to declare for Caffar at the ever memorable battle of Munda. Bogud, afterwards Tiding with Antony againft OaavTus, fent a body of forces to affift him m Spain ; at which time the Tingitanians revolting from him, Bocchus, with an army compofed of Romans in the intereft of Oftavius, who pafled over from Spain into Africa,- and his own fubje&s, poffeffed himfelf of Mauritania Tingitana. Bogud fled to Antony ; and O&avius, after the conclufion of the war, honoured the inhabitants of Tingi with all the privileges of Ro¬ man citizens. Pie likewife confirmed Bocchus king of Mauritania Csefarienlis, or the country of the Maf- faffyli, in the poffeffion of Tingitania, which he had conquered, as a reward for his important fervices. In this he imitated the example of his great predeceffor Julius Caffar, who divided feme of the fruitful plains of Numidia among the foldiers of P. Sittius, who had conquered great part of that country, and appointed Sittius himfelf fovereign of that diftrief. Sittius, as has been intimated above, having taken Cirta, kihed Sabura, Juba’s gCneial, entirely difperfed his forces, and either cut off or taken prifoners moft of the Pom¬ peian fugitives that efcaped from the battle of hap- fus, highly deferved to be diftinguifhed in fo eminent a manner. After Bocchus’s death, Mauritania and the Maffaefylian Numidia were in all refpedts confider- cd as Roman provinces. NUM1SMATOGRAPH1A, a term ufed for the defeription and knowledge of ancient coins and medals, whether of gold, filver, or brafs. See Coins and Me¬ dals* 4 ] NUN NUMITOR, the fon of Procas king of Alba, and Numitor the brother of Amulius. Procas before his death made him and Amulius joint heirs to the crown, on condition of their reigning annually by turns : but Amulius, on getting poffeffion of the throne, excluded Numitor, whofe fon Laufus he ordered to be put to death, and obliged Rhea Sylvia, Nurnitor’s only daughter, to be¬ come a veftal. This princefs becoming pregnant, de¬ clared that fhe was with child by the goi Mars; and afterwards brought forth Ivhemus and Romulus, who at length killed Amulius, and reftored Numitor to the throne, 754 B. C. See Rhemus and Romulus. NUMMUS, a piece of money otherwife called fejlertlus. NUN, the fon of Elifhamah, and father of Jolhua, of the tribe of Ephraim. The Greeks gave him the name of None inftead of Nun. This man is known in facred hiftmy only by being the father of Jofhua. Nun, a woman, in feveral Chriftian countries, who devotes herfelf, in a cloifter or nunnery, to a religious life. See the article Monk. There were women, in the ancient Chriftian church, who made public profefiion of virginity, before thv, monaftic life was known in the world, as appears from the writings of Cyprian and Tertullian. I hefe, for diftin&ion’s fake, are fometimes called eulejtajhcal virgins and were commonly enrolled in the canon or matncula of the church. I hey differed from tne monaftic virgin chiefly in this, that they lived private¬ ly in their fathers houfes, whereas the others lived in communities : hut their profeffion of virginity was not fo ftria as to make it criminal in them to marry after¬ wards, if they thought fit. As to the confecration of virgins, it had fome things peculiar in it: it was ufually performed publicly in the church by the bifliop. The virgin made a public profeffion of her refohition* and then the bifnop put upon her the accuftomed ha¬ bit of facred virgins. One part of this habit was a veil, called the facrum velamen ; another was a kind of mitre or coronet worn upon the head. At prefent, when a woman is to be made a nun, the hanit, veil, and ring of the candidate are carried to the altar; and fhe herfelf, accompanied by her neareft relations, is con- dudlei to the bilhop, who, after mafs and an anthem, (the fubje£t of which is, “that fhe ought to have her lamp lighted, becaufe the bridegroom is coming to meet her),” pronounces the benedi&ion : then fhe riles up, and the bifhop confecrates the new habit, fprinkr ling it with holy water. When the candidatehas put on her religious habit, fhe prefents herfelf before the bifhop, and fings, on her knees, Ancilla Chrifti fum, See.; then fhe receives the veil, and afterwards the ring, by which fhe is married to Chrift ; and laflly, the crown of virginity. When fhe is crowned, an ana¬ thema is denounced againft all who fhall attempt to make her break her vows. In fome few inftances, per¬ haps, it may have happened that nunneries, monafte- ries, See. may have been ufeful as well to morality and religion as to literature : in the grofs, however, they have been highly prejudicial; and however well they might be fuppofed to do when viewed in theory, in fadl they are unnatural and impious. It wasfureiy far from the intention of Providence to feelude youth and beauty in a cloiftered ruin, or to deny them the innocent enjoyment of their years and fex. ^ J ^ NUNCIO, Nwnci') NUN [ 15 NUNCIO, or Nuntio, an ambafiador from the pope to fome Catholic prince or Hate, or a perfon who attends on the pope’s behalf at a congrefa, or an ai- fembly of feveral ambaffadors. NUNCUPATIVE, in the fchools, fomething tliat is only nominal, or has no exiftence but in name. Nuncupati t'E Wi!l or "Teft ament, a will made ver¬ bally, and not put in writing. See the articles Will and Testament. NUNDIN’A, a goddefs among the ancient hea¬ thens, fuppofed to have the care of the purification of infants. And hecaufe male infants were purified nine days after their birth, her name is derived from nonus, or the ninth, though female-infants were purified the eighth day ; which purification was called lujiratio^hy the Romans. NUNDINAL, Nunclinalh, a name which the Ro¬ mans gave to the eight firlt letters of the alphabet uled in their kalendar. This feries of letters, A, B, C, 1), E, F, G, H, is placed and repeated fucceflivcly from the firft to the la ft day of the year : one of thefe always expreffed the market days, or the afiemblies called nundina, quaji novendirue, becaufe they returned every nine days. The country people, after working eight days fuc- ceffively, came to town the ninth, to fell their feveral commodities, and to inform themfelves of what related to religion and government. 'Thus the nundinal day being under A on the firft, ninth, feventeeth, and twenty-fifth days of January, &c. the letter D will be the nundinal letter of the year following. Thefe nundinals bear a very great relemblance to the domi¬ nical letters, which return every eight days, as the nun finals did every nine. NUNDOCOMAR, a R-ajah in Bengal, and head of the Bramins, who, in 1775, was condemned to an Ignominious death by Englifh laws newly introduced, in an Englilh court of juft ice newly eftablifhed, for a forgery charged to have been committed by him many years before. That he was guilty of the deed can¬ not be queftioned ; but there was furely fomething hard in condemning a man by an c.v pojl facto law. He bore his fate with the utmoft fortitude, in the full confidence that his foul would foon be reunited to the univerfal fpirit whence it had fprung. See Metaphy¬ sics, Part III. Ch. iv. Of the Immortality of the Soul. Monte Nuovo, in the environs of Naples, blocks up the valley of Averno. “ This mountain (Mr Swin¬ burne tells us) arofe in the year 1538, for after re¬ peated quakings the earth burft afunder, and made way for a deluge of hot afhes and flames, which rifing extremely high, and darkening the atmofphere, fell down again anil formed a circular mound four miles in circumference, and 1000 feet high, with a large cup in the middle. The wind rifing afterwards, waft¬ ed the lighter particles over the country, blailed ve¬ getation, and killed the animals who grazed ; the con- ; I N U R fequence was, tliat the place was deferted, till Don Pedio de Toledo, viceroy of Naples, encouraged the inhabitants by example and otherwife to return. “ Part of Monte Nuovo is cultivated, but the larger portion of its declivity is wddly overgrown with prickly-broom, and rank weeds that emit a very fe¬ tid fulphureous fmell. The water is (hallow, its in* fide clad with flirubs, and the little area«t tne bot¬ tom planted with fig and mulberry trees ; a moft ilriking fpecimen of the amazing vicilfitudes that take place in this extraordinary country. I faw no traces of lava or melted matter, and few ftones within. “ Near the foot of this mountain the fubterraneous fires ad with fuch immediate power, that even the fand at the bottom ot the fea is heated to an intole¬ rable degree.” NUPTIAL rites, the ceremonies attending the folemnization of marriage, which arc different m dif¬ ferent ages and countries. We cannot omit here a cuftom which was pradifed by the Romans on thefe oecaiions; which was this : Immediately after the chief ceremonies were over, the new-married man threw nuts about the room for the boys to ferambie for. Va¬ rious re .Tons have been afligned for it; but that which moft generally prevails, and leems to be the moft juft, is, that by this ad the bridegroom fignified his reiblu- tion to abandon trifles, and commence a ferious courfe of life ; whence nucibus relitlis in this fenfe became a proverb. They might alfo be an emblem of fertility. The ancient Greeks had a peifon to condud the bride from her own to the bridegroom’s houfe ; and hence he was called by the Greeks Nymphagofi, which term was afterwards ufed both by the Romans and the Jews. NUREMBERG, an imperial city of Germany, capital of a tetritory of the fame name, (ituated in E. Long. 11°, N. Lat. 47.30. It (lands on the Reg- nitz, over which it has feveral bridges, both of wood and Hone, at the bottom of a hill, 60 miles from Augfburg, 87 from Munich, 46 from Wurtzburg, and^ 150 from Ratifbon ; and is thought by fome to be the Segodunum, and by others the Caftrum Noricum, of the ancients. The city has derived its name from the hill, upon which (lands this caftle, called, in Latin, Caftrum No¬ ricum, round which the city was begun to be built, and where the emperors formerly lodged ; and here they lodge dill, when they pafs by that city. They there preferve, as precious relics, the crown, feeptre, cloaths, bufkins, and other ornaments of Charlemagne (a), which ferved alfo the emperor Leopold, when he went thither after his eledlion, to receive the ho¬ mage of the city. The fmall river Regnitz, whicli runs through it, and thofe of Rednitz and Schwar- zack, which pafs by its walls, furnifh the inhabitants, befides other advantages, with the means of making all forts of (luffs, dyes, and other manufactures (n), U 2 and Nuptial, Nurent- Itr . (a) Thefe ornaments are, a mitred crown, enriched with rubies, emeralds, and pearls ; the dalmatic of Charlemagne, richly embroidered ; the imperial mantle powdered, with embroidered eagles, and its border thick fet with large emeralds, fapphnes, and topazes ; the huikins covered with plates of gold ; the gloves em¬ broidered ; the apple, the golden fceptie, and (word. The ancient cuftom of the empire is, that the emperof is bound to affemlle in this city the firft diet that he holds after his eleftion and coronation. (n) There is in Nuremberg, and in the neighbouring villages depending upon it, an infinite number of workmeR Nurem¬ berg N U R r 156 1 N U R and toys, which are carried and fold even in the In¬ dies. It is a large and well-built town, but not very po¬ pulous. Its fortifications are a double wall, flank¬ ed with towers mounting cannon, and a deep ditch. The magiitrates, and moft of the inhabitants, are Lutherans. There are a great many churches and chnpels in it. Invthat of St Sebald is a brafs mo¬ nument of the faint ; and a pi&ure, reprefenting the creation of the world, by the celebrated Albert Durer, who was a native of the town ; but the fined church in the town is that of St Giles. In that of the Holy Ghoft are kept moft of the jewels of the empire, together with the pretended fpear with which our Saviour’s fide was pierced, a thorn of his crown, and a piece of the manger wherein he was laid. Here are alfo a great many hofpitals, one in particu¬ lar for foundlings, and another for pilgrims ; with a gymnafium, an anatomical theatre, a granary, a fine public library, the old imperial fortrefs or caftle, fome remains of the old citadel of the burgraves of Nuremberg, feveral Latin fchools, an academy of painting, a well furnifhed arfenal, a Teutonic houfe in which the Roman-catholic fcrvice is tolerated, and a mint. Mr Keyfler fays there are upwards of 500 ftreets in it, about 140 fountains, 16 churches, 44 religious houfes, 12 bridges, .10 market-places, and 25,000 inhabitants ; and that its territories, befides the capital and four other towns, contains above 500 villages, and about 160 mills on the Regnitz. The trade of this city, though upon the decline, is ftill very great, many of its manufa&ures being ftill exported to all parts of the world ; among which may be reckon¬ ed a great variety of curious toys in ivory, wood, and metal, already mentioned. The city has alfo diftinguifti- ed itfelf in the arts of painting and engraving. When the emperor Henry VI. aflifted at a tournament in Nuremberg, he raifed 38 burghers to the degree of nobility, the defendants of whom are called pa- triciam, and have the government of the city entire¬ ly in their hands; the whole council, except eight mafters of companies, who are fummoned only on extraordinary occafions, confifting of them. Among the fine brafs cannon in the arfenal, is one that is charged at the breech, and may be fired eight times in a minute ; and two that carry balls of eighty pounds. The city keeps, in conftant pay, feven companies, confifting each, in time of peace, of 100 men, but, in time of war, of 185; two troops of cuiraffiers, each confifting of 85 men ; and two companies of in- vaiids. There are alfo 24 companies of burghers, well-armed and difeiplined. On the new bridge, which is faid to have coft 100,000 guilders, are two pyramids, on the top of one of which is a dove with an olive branch in her bill, and on the other an impe- Nurcn- rial black eagle. Mufic alfe flourifhes greatly in Mu- , remberg ; and thofe who delight in mechanic arts and Nuriing, manufaftures cannot any where better gratify their ——y—j curiofity. As an imperial city, it has a feat and voice at the diets of the empire and circle, paying to the chamber of Wetzlar 812 rix-dollars each term. The territory belonging to the city is pretty large, containing, befides two confiderable forefts of pine, called the Sibald and Laurence fcrejts, feveral towns and villages. We have mentioned already that certain families called patricians, to the excluiion of the reft, poflefs the offices of the fenate They are compofed of 42 perCons (c), over which two caftellans, or perpetual fe- nefchals, prefide, the firft of whom has his refidence in the caftle. fhefe cafteilans affemble fometimes in the caftle, with five or fix of the chief members, to hold a fecret council (0). And, as this city glories in being one of the firft which embraced Lutheraniftn, it preferves the privileg-e of that in civ l matters, not admitting any catholics to the magiftracy or freedom of the town ; the catholics there having the liberty only of remaining under the prote&ion of the reft, and performing their religious worfhip in a commandery of Malta, and this but at certain hours, not to difturb the Lutherans, who likewife aflemble there, although in pofteflion of all the other churches. This city is particulary noted for its antiquity, grandeur, fortifications, its triple walls of hewn ftone, its large and deep moat, its fine houfes, large churches, its wide ftreets, always clean, and for its curious and large library, and its magazine ftored with every thing proper for its defence. NURSERY, in gardening, is a piece of land fet apart for raifing and propagating all f»rts of trees and plants to fupply the garden and other plantations. NURSING of children. See Lactatio. The following obfervations are faid to be the refult of long experience f. A child, when it comes into the world, is almoft a round ball ; it is the nurfe’s part to ^o.™' affift nature, in bringing it to a proper fliape. The child fhould be laid (the firft month) upon a thin ma- trafs, rather longer than itfelf, which the nurfe will keep upon her lap, that the child may always lie ftraight, and only fit up as the nurfe flants the matrafs. To fet a child quite upright before the end of the firft month, hurts the eyes, by making the white part o£ the eye appear below the upper eye-lid. Afterwards the nurfe will begin to fet it up and dance it by de¬ grees. The child muft be kept as dry as poffible. The cloathing fhould be very light, and not much longer than the child, that the legs may be got at with eafe, in order to have them often rubbed in the day workmen, very ingenious in making feveral kinds of toys of wood, which are carried through all the fairs of Germany, and from thence through all Europe. Thefe toys are called Nurembergs; and they have fo great a fale, that it even exceeds defeription. This employment affords a livelihood to the greateft part of the inha¬ bitants of the city ; and they make a very confiderable profit from this,traffic. r (c) O" thefe 42 members, there are only 34 chofen from the.patrician families ; the other eight are taken from among the burghers, and make in a manner a fmall feparate body. (d) Ibis fecret council is compofed of feven principal chiefs of the republic, and for that reafon is called Jeptemvirate. It determines the moft important affairs ; and it is the depofitory of the precious ftones of the ■ empire, of the imperial crown, the enfigns, feals, and keys of the city. Nurfmg- N U R [ • i day with a warm hand or flannel, and in particular the inflde of them. Rubbing a child all over tekes off feuvf, and makes the blood circulate. The erne breaft fhould be rubbed with the hands one way, and the other the other way, night and morning at leaft. The ankle-bones and infide of the knees (hould be rubbed twice a day ; this will ftrengthen thofe parts, and make the child ftretch its knees and keep them flat, which is the foundation of an ereft and graceful perfon. . • i A nurfe ought to keep a child as little m her aims as poflible, left the legs fhoul.i be cramped, and the toes turned inwards. Let her always keep the child s legs loofe. The oftener the pofture is changed, the better. Toffing a child about, ’and exerciflng it in the open air in fine weather, is of the greateft fervice. In ci¬ ties, children are not to be kept in hot rooms, but to have as much air as poflible. Want of exercife is the caufe of large heads, weak and knotted joints, a contrafted breaft, which occa- lions coughs and ftufted lungs, an ill-fhaped perfon, and waddling g^h, befides a numerous train of other ills. The child’s flefh is to be kept perfeaiy clean, by conftantly wafhing its limbs, and likewile its neck and ears ; beginning with warm water, till by de¬ grees it will not only bear, but like to be wafhed with cold. Riling early in the morning- is good for all chudien, provided they awake of themfelves, which they gene¬ rally d© ; but they are never to be waked out of their fleep, and as foon as poflible to be brought to regular fleeps in the day. When laid in bed or cradle, their legs are always to be laid ftraight. Children, till they are two or three years dd, muft never be fufftred to walk long enough at a time to be weary~ Gills might be trained to the proper management of children, if a premium were given in free-fchools, workhoufes, &c. to thofe that brought up the fineft child to one year old. If the mother cannot fuckle the child, get a whole- fome cheerful woman, with young milk, who has been ufed to tend young children. After the firft fix months, fmall broths, and innocent foods of any kind, may do as well as living wholly upon milk A principal thing to be always attended to is, to give young children conftant exercife, and to keep them in a proper pofture. . . With regard to the child’s drefs in the day, let it be a fhirt ; a petticoat of fine flannel, two or three inches longer than tha child’s feet, with a dimity top (commonly called a bodice-coat), to tie behind ; over that a furcingle. made of fine buckram, two inches broad, covered over with fattin 01 fine ticken, with a ribbon fattened to it to tie it on, which anfwers every purpofe of ft ays, and has none of their inconveniences. Gver this put a robe, or a flip and frock, or whatever you like beft ; provided it is fattened behind, and not much longer than the child’s feet, that their motions may he ftridly obferved. 8 Nu/Unce 57 ] N U T Two caps are to be put on the head, till the child has got moft of its teeth. The child’s drefs for the night may be a flurt, a blanket to tie on, and a thin gown to tie over the blanket NUSANCE, or Nuisance, in law, a thing dene to the annoyance of another. # 1 Nuifances are either public or private.—A public nuifance is an offence againft the public in general, either by doing what tends to the annoyance of all the king’s fubjeds, or by negleding to do what the common good requires : in which cafe, all annoyances and injuries to ftreets, highways, bridges, and large rivers, as alfo dilorderly alehoufes, bavvdy-houfes, gaming-houfes, ftages for rope-dancers, &c. are held to be common nuifances.—A private nuifance is, when only one perfon or family is annoyed by the doing of any thing ; as where a perfon flops up the light of another’s houfe, or builds in fuch a manner that the rain falls from his houfe upon his neighbour’s. NUT, among botanifts, denotes a pericarpium of an extraordinary hardnefs, inclofing a kernel or ^NUTATION, in aftronomy, a kind of tremulous motion of the axis of the earth, whereby, in each an¬ nual revolution, it is twice inclined to the ecliptic, and as often returns to its former pofition. NUTCRACKER. See Corvus, n° 8. “ This bird (fays Buffon) is diftinguifhed from the PIatc ^ jays and magpies by the fhape of its bill, which is CCCxuvs* ftraighter, blunter, and compofed of two unequal pieces. Its inftind is alfq different; for k prefers the refidence of high mountains, and its difpofition is not fo much tindured with cunning and fufpicion ” They live upon hazel-nuts, acorns, wild berries, the kernels of pine-tops, and even on infeds. “ Befides the brilliancy of the plumage, the nut¬ cracker is remarkable for the triangular white fpots which are fpread over its whole body, except the head. Thefe fpots are fmaller on the upper part, and broad¬ er on the breaft ; their effed is the greater, as they are contrafted with the brown ground. “ Thefe birds are moft attached, as I have obferved above, to mountainous fftuations. They are common A.uvergne, Savoy, Lorraine, ranche-Compte, 1R A X W J — ~ J > ' , , . - Switzerland, the Bergamafque, in Auftna, in the moun¬ tains which are covered with forefts of pines. They alfo occur in Sweden, though only.in the fouthern parts of that country. The people in Germany call them Turkey birds, Italian birds, African birds 5 ■which language means no more than that they are foreign. - 4. Though the nutcrackers are not birds or pal- fage, they fly fometimes from the mountains to the plains. Frifch fays, that flocks of them are often ob¬ ferved to accompany other birds into different parts of Germany efpecially where there are pine forefts. Butin 175+. great flights of them entered France, particularly Burgundy, where there are few pines; they were To fatigued on their arrival, that they fuf- fered themfelves to be caught by the hand. “ We cannot find in writers of natural hiftory any details with regard to their laying, their incubation, the training of their young, the duration of their life, NUT [ t 'N- rhr.tch, Sic. for they haunt inaccefilhle fpots, where they en- ■^sutni'.-f. j0y undifturbed fafety and felicity,” NUTHATCH, in ornithology. See Sitta, its generic name. In th‘s place we (hall only extra irom Buffon an account of two fpecies of foreign birds related to the nuthatch, i. Th? great hook-billed nuthatch.—“ It is the lar¬ ged of the known nuthatches: its bill, though pret¬ ty ftraight, is inflated at the middle, and a little hook¬ ed at the end ; the noftrlls are round ; the quills of the tail and of the wings edged with orange on a brown ground ; the throat white ; the head and back gray ; the under fide of the body whitifh. Such are the principal properties of the bird. It was obferved by Sloane in Jamaica. “ Its total length is about feven inches and a half; the bill, is eight lines and one third; the upper mandible a little protuberant near the middle; the mid toe, eight lines and one third ; the adar extent, eleven inches and a quarter ; the tail about twenty-three lines.” Plate 2. Ihe'fpotted or Surinam nuthatch.—“ This is ano- C£cxlv11 ther American nuthatch, with a hooked bill ; but dif¬ fers from the preceding in iize, plumage, and climate : it inhabits Dutch Guiana. “ The upper fide of the head and of the body is of a dull afh colour ; the fuperior coverts of the wings of the fame colour, but terminated with white; the throat white; the bread and ail the under fide of the body cinereous, and more dilute than the upper fide, with white ftreaks fcattered on the bread and fides, which forms a fort of fpeckling ; the bill and legs brown. “ Total length, about fix inches; the bill, an inch ; the tar Jus, feven lines and a half; the mid toe, eight or nine lines, and longer than the hind toe, whofe nail is the dronged ; the tail, about eighteen lines, confiding of twelve nearly equal quills, and exceeds the wings thirteen or fourteen lines.” ccwx'xiuv hiU I MEG. See Myristica, its generic name. a; d ^ he tree which produces this fruit was formerly cccxxxv. thought to grow only in the Banda Ifiands. It is now pad a doubt, however, that it grows in the Ele of Fiance and in all or mod of the ifles of the fouth feas. It feemsa little remarkable that this trade, which js certainlya lucrative one, fhould have been fo long mo nopolized by the Dutch. 1 heir cunning and defire to retain it in their own hands feems to account for the idea that fo generally prevailed formerly that it grew only in their fettlements. It was reported as early as the year 1751, upon what appeared at that time to be good grounds, that it was likely to be produced in the Wed Indies.^ An Englidi failor faid he had feen fome tieesin Jamaica, and the governor on inquiry found it fo, and that they ayrreed exaftly with the deferip- uon given of thofein the Spice Iflands in the Ead In- dits.^ 1 his account, which was given in the Gentle¬ man’s Magazine for January 1751, we have never feen contumed ; and therefore we ftippofe that the expecta¬ tions formed were either frullrated or premature: owever, it is certain, as we have obferved under the generic name, that a wild fpecies of it grows at To- >ago. I o avoid repetition, or the appearance of pro- x.ty, we mud re;er thole who wifh for farther infor¬ mation refpeCling the trade in this article to M. P. joonnerat’s account of a voyage to the Spice Ifiands 58 1 NUT and New-Guines, which was printed at Paris in 1777, Nutmeg, and tranfiated into Englifh and printed at Bury St —-v-—^ Edmund’s in 1781, &c. and to Bougainville’s voyage, and Dr Hawkefworth’s compilation of Englifh voy¬ ages. It will not, however, we trud, he deemed improper nor befide our purpofe, if we lay before our readers the following account of the dangerous confeqnenceji of ufing this article to excels. It was given by Dr Jacob Schmidius, pubhfhed in the Gentleman’s Maga¬ zine for 1 767. “ A gentleman of Lower Silefia, about thirty-fix years old, of a good conilitution, and wdio enjoyed a ,♦ good Hate of health, having felt, during fome day;:, fome cholic pains, took it in his head, lay way of ic- medy, to eat four nutmegs, wdrich weighed all toge¬ ther two ounces, and he drank, in eating them, fome glaflesof beer; which he had ndfooner done, but lie »v a fei/.ed with a great heat, a violent pain in the head, a vertigo and delirium, and was inftantly deprived of the ufe of light, fpeech, and of all his fenfes. He was put to bed, where he remained two days and two nights ; his body was opprefied with laflitude, always drowly, yet without being able to fleep. The third day he was in that lethargic flate, which is called a coma vigi/, with a weak and intermitting pulfe. Cephalic reme¬ dies, cordials, and among others the fpirit of cephalic vitriol, and the efience of cafloreum, wrere adminiiter- ed in good fpirit of fal ammoniac. The fourth day he recovered a little, but had abfolutely loft his me¬ mory, fo as not to remember the lead thing he had done in his life. A continued fever then came on, accompanied by an obftinate watchfulnefs ; a palpi¬ tation of the heart feemed to be the fore-runner of other fymptoms, and he was finally itruck with a pal- fy in all his limbs. “At the expiration of eight days, he recovered the ufe of reafon, and faid, that during the firft four days of his illnefs, he feemed to himfelf to have confiantly a thick veil before his eyes, and that a great number of fparks and fiafhes continually ifl'ued from it. All the bad fymptoms of this malady yielded at lall fuc- cefiively to the continued ufe of remedies fuiced to his condition ; and in three months time he was perfedf- ly recovered, but he was particularly indebted for his cure to mercurial and ammoniacal remedies. “ According to chemical principles, it might perhaps be faid, that the aromatic and oily fait con¬ tained in nutmeg, of which this patient had taken too large a dole, had immediately excited fo great an agi¬ tation in the humours, and fo rapid a motion in the animal fpirits, as in fome meafure to partake of the natu^ of fire, snd that a vifeid and narcotic fulphur, which refides likewife in the nutmeg, though in a lefs fenfible manner, being carried' at the fame time into the mafs of blood, by iuddenly fixing the animal fpi¬ rits, and intercepting their courfe in the nerves, had afterwards caufed the fttipor in the limbs, the aphony, and the palfy. But I leave others to explain theie phenomena; my only view, by communicating this ob- fervation, being to ihow that the immoderate ufe of nutmeg may be attended with very great danger.” NU I RIFION, in the animal-occonomy, is the re¬ pairing the continual lofs which the different parts of the body undergo. The motion of the parts of the body} NUT Js’utntg, hody, t!ie friclion of thefe parts with each other, and , elpecially the action of the air, would deftroy the body entirely, if the lofs was not repaired by a proper diet, containing nutritive juices ; which being digefted in the llomach, and afterwards converted into chyle, mix with the blood, and are distributed through the whole body for its nutrition. In young perfons, the nutritive juices not only ferve to repair the parts that are damaged, but alfo to in- creafe them, which is called growth. In grown perfons, the cuticle is every-where con- ilantly defquamating, and again renewing ; and in the fame manner the parts rubbed off, or otherwife ft pa- rated from the flefhy parts of the body, are foon fup- plied with new fleih ; a wound heals, and an emaciated perfon grows plump and fat. Buffon, in order to account for nutrition, fuppofes the body of an animal or vegetable to be a kind of mould, in which the matter neceifary to its nutrition is modelled and aflimilated to the whole. But (con¬ tinues he) of what nature is this matter which an animal or vegetable affimilates to its own fubfiancei What power is it that communicates to this matter the adlivity and motion ncceflary to penetrate this mould ? and, if fuch a force exift, would it not be by a fimilar force that the internal mould itfelf might be reproduced ? As to the firft queflion, he fuppofes that there ex- ills in nature an infinite number of living organical parts, and that all organized bodies confift of fuch or¬ ganical parts; that their produdlion cofts nature no¬ thing, fince their exiftence is conltant and invariable ; fo that the matter which the animal or vegetable af- fimilates to its fubftance, is an organical matter of the fame nature with that of the animal or vegetable, which confequently may augment its volume without changing its form or altering the quality of the fuh- Ilance in the mould. As to the fecond queflion : There exid (fays he) in nature certain powers, as that of gravity, that have no affinity with the external qualities of the body, but add upon the molt intimate parts, and penetrate them throughout, and which can never fall under the obfer- vation of our fenfts. And as to the third quellicn, he anfwers, that the internal mould itfelf is reproduced, not only by a fi¬ milar power, but it is plain that it is the very fame power that caufes the unfolding and reprodu&ion there¬ of: for it is fufficient (proceeds he), that in an orga¬ nized body that unfolds itfelf, there be fome part fimi¬ lar to the whole, in order that this part may one day become itfelf an organized body, altogether like that of which it is actually a part. NUX moschata. See Myristica and Nutmeg. Nvx Piftadna. See Pistachia. Nux Vomica, a flat, comprefled, round fruit, about the breadth of a ffiilling, brought from the Eaft Indies It is found to be a certain poifon for dogs, cats, &c. and it is not to be doubted that it \ « aid alfo prove fatal to mankind. Its furface is not much corrugat¬ ed ; and its texture is firm like horn, and of a pale greyifh-brown colour. It is fajd to be ufed as a fpe- cific againft the bite of a fpecies of water-fnake. It is confiderably bitter and deleterious ; but has been ufed in dofes from five to ten grains twice a-day or fo, N U Y in intenriittents, particularly obi'linate quartans, and Nuy in contagious dyfentery. The Jlrychnus Ignatii is a ''“"‘-v tree of the fame kind producing goutd-like fruit, the feeds of which are improperly called St Ignatius’s beans. Thefe, as alio the woods or roots of fome fuch trees, called lignum colubnttum or fnaheivood, are very narco¬ tic bitters like the nux vomica. NUY TS (Peter), a native of Holland, and a lead¬ ing character in that extraordinary iranfadtion which happened between the Japanefe and the Dutch about the year i6/8. In 1627 Nuyts arrived in Batavia from Holland, and was in the fame year appointed ambaffador to the Emperor of Japan by the governor and council of Batavia. He repaired to that empire in 1628 ; and being a man of a haughty difpofition, and extremely vain, he believed it practicable to pafs upon the natives for an ambaffador from the king of Holland, Upon his affuming this title he was much more honourably received, careffed, and refpeCled, than former mini- ffers had been. But he was foon dete&ed, repri¬ manded, and reproached in the fevereft manner, fent back to the port, and ordered to return to Batavia with all the circumfiances of difgraee imaginable; notwithftanding which, his in ter eft was fo gieat, that, in lie ad of being punifhed as he deferved, he was im¬ mediately afterwards promoted to the government of the ifland of Formofa, of which he took poffeffion the year following. He entered upon the adminiftration of affairs in that ifland with the fame difpofition that he had fhown while ambaffador, and with the moft implacable re- fentment againft the Japanefe ; neither was it long before an opportunity offered, as he thought, of re¬ venging himfelf to the full. Two large Japanefe firips, with upwards of five hundred men on board, came in¬ to the port; upon which he took it into his head to difarm and unrig them, in the fame manner as the Dutch vefiels are treated at Japan. The Japanefe did' all they could to defend themfelves from this ill ufage; but at laft, for want of water, they were forced to fub- mit. Governor Nuyts went fti’l farther. When they had finiffied their affairs at Formofa, and were defirous of proceeding, according'to their inftruaions, t® Chi¬ na, he put them off with fair words and fine pro- mifes till the monfoon was over. They began then to be very impatient, and defired to have their can¬ non and fails reftored, that they might return home ; but the governor had recourfe to new artifices, and, by a feries of falfe promifes, endeavoured to hinder them from making ufe of the feafon proper for that voyage. The Japanefe, however, foon perceived his defign ; and at length, by a bold attempt, accomplifhed what by fair means and humble entreaty they could not obtain ; for, by a daring and well concerted ef¬ fort, they took him prifoner, and made him and one of the council fign a treaty for fecuring their li¬ berty, free departure, and indemnity which was af¬ terwards ratified by the whole., council. Nuyts was firft confined in Batavia, and afterwards delivered up to the Japanefe, notwithftanding the moft earned intreaties on his part t© be tried, and even to fuffer any kind of death where he was, rather than to be fent to Japan. He was fent there, however, in 1654. He was fubmitted [ 159 1 ! NYC [ 160 1 N Y E N'izzer . t* - Nydan- thee. fubmltted to the mercy or difcretion of the emperor ; and the confequencewas,that,though imprifoned,hewas well ufed, and could go any where, provided his guards Avere with him, which was more than he could pof- fibly have expected. He now looked for nothing but the continuance of his confinement for life. On a particular occafion, however, i. e. at the funeral of the emperor’s father, at the requeft of the Dutch he was fet free, and returned again to Batavia, to the furprife of that people, who, however, adopted ever after a very different condudt with refpedt to the Japanefe. NUZZER, or nuzzeranah ; a prefrnt or offer¬ ing from an inferior to a fuperior In Hindoftan no man ever approaches his fuperior for the firft time on bufinefs without an offering of at leaft a gold or filver rupee in his right hand ; which if not taken, it is a mark of disfavour. Nuzzeranah is alfo ufed for the fum paid to the government as an acknowledge¬ ment for a grant of lands or any public office. NYCHTHEMERON, among the ancients, fig- nified the whole natural day, or day and night, eon- fifting of 24 hours, or 24 equal parts. This way of confidering the day was particularly adopted by the Jews, and feems to owe its origin to that cxpreffion of Mofes, in the firft chapter of Genefis, “ the even¬ ing and the morning were the firft day.”—Before the Jews had introduced the Greek language into their difcourfe, they ufed to fignify this fpace of time by the fimple expreffion of a night and a day. It is proper here to obferve, that all the eaftern countries reckoned any part of a day of 24 hours for a whole day ; and fay a thing that was done on the third or feventh day, &c. from that laft mentioned, was one after three or feven days. And the He¬ brews, having no word which exaftly anfwers to the Greek fignifying “ a natural day of 24 hours,” ufe nig/it and day-, or day and night, for it. So that to fay a thing happened after three days and three nights, was, with them, the fame as to fay it happened after three days, or on the third day. This, being remembered, will explain what is meant by “ the Son of Man’s being three days and three nights in the heart of the earth.” NYCTALOPIA. See Medicine, n° 361. NYCTANTHES, Arabian Jasmine : A genus of the monogynia order, belonging to the diandria clafs of plants ; and in the natural method ranking with the 44th order, Sapiaria. I he corolla and calyx are oftofid ; the perianthium dicoccous. There are fi e fpecies; the moft remarkable of which are, 1. The arbor triflis, or forrovvful tree. This me, or ftlrub, thepariatacu of the Bramins, grows natuially in fandy places in India, particularly in the ifiands of Ceylon and Java, where it is produced in great abundance, and attains the height of iS or 20 feet. It rifes with a four-cornered Item, bearing leaves that are ov^il, and taper to a point They {land oppofite, on fhort foot- ftalks ; are of a fiiining brownifh-green on the upper fide, a more vivid green on the under, and of a tafte that is aftringent and fomewhat bitter. From the middle-rib, on the under furface of the leaves, proceed •on both fides a number of coftulse, or fmaller ribs, which run nearly to the margin, and mark the furface with the impreflion of their arched furrows. 11 he powers, which are white and highly odoriferous, ha* -N° 244. ving a fweet delectable fmell emulating the heft honey, confift of one petal deeply divided into eight parts, which are narrower towards the (talk, and dilated to¬ wards the fummit. They ft nd upon foot ftalks, „ which emerge from the origin of the leaves; are ri¬ gid, obliquely raifed towards the top, grow oppofite in pairs, and are divided into three fhort leffer branches, which each fupports five flowers placed clofe together, without partial foot ftaiks. The fruit is dry, capfu- lar, membranaceous, and compreffed. It is generally aflerted of this plant, that the flowers open in the evening, and fall off the fucceeding day. Fabricivis and Paludanus. however, reftrift the affer- tion, by affirming, from a&ual obfervation, that this effe£l is found to take place only in fuch flowers as are immediately under the influence of the folarrays. Grim- mius remarks in his Lahotatorium Ceylonicum, that the flowers of this ’tree afford a fragrant water, which is cordi :1 refrefhing, and frequently employed with fuc- cefs in inflammations of the eyes. The tube of the flower, when dried, has the fmell of faffron ; and, being pounded and mixed with fanders-wood, is ufed by the natives of the Malabar coaft for imparting a grateful fragrancy to their bodies, which they rub or anoint with the mixture 2. The fambac, noted, like the other fpecies, for the fragrancy of its flowers, is a native likewife of India ; and is cultivated in our ftoves, where it gene¬ rally rifes with a twining item to the height of 18 or 20 feet. The leaves are oppofite, fimple, and entire } but in different parts of the plant affume different forms : the lower leaves being heart-fhaped and blunt; the upper, oval and fharp. The flowers are white, inexpreffibly fragrant, and generally appear with us its the warm fummer-months. Strong loam is its proper foil. ( here is a variety of this fpecies with a double flower, which is much larger and more fragrant than the former NYCTASTRATEGI, among the ancients, were officers appointed to prevent fires in the night, or to give alarm and call afiiftance when a fire broke out. At Rome they bad the command of the watch, and were called noSurn'i triumviri, from their office and number. NYCTICORAX in ornithology the night-raven; a fpecies of Ardea. NYE (Philip), an Englifh nonconformift, a native of Suffex, defeended of a genteel family there, was born about ' 5’96. After a proper foundation at the grammar fchool, he was fent to Oxford and entered a commoner of Brazen Nofe college in 1615, whence he removed in a little time to Magdalen-hall, under a puritanical tutor. He took the degrees in arts in 1619 and 1622, about which time he entered into holy or¬ ders, and was, fome time in 1620, curate of St Mi¬ chael s church in vornhill, London. Refolving, how¬ ever. to rejeft the conftitution of the church of Eng¬ land, he became o ttox ous to all the cenfures of the epifcopal court; to avoO which he vent, with others of his perfuafuto Holland, in 1633. He co,.tinned for the moft part at Arnheim. in Gutlderland, till 1640 ; when, the power of the parliament beginning to prevail over the king, he returned home, and was foon after made miniiter of Kimholton in Hunting- donfhire, by Edward Lord Kimbolton then earl of Manchdber, In 1643, was appointed one l^c affembly Nygel' linus in the command of the praetorian guards. About the time, however, that the German legions revolted from this defpicable prince, he was alfo betrayed by Nymphidius and abandoned by his guards. Nymphidius began now to entertain thoughts of feizing the fovereignty himfelf. However, he did not immediately declare his ambitious views ; but pre¬ tending to efpoufe the caufe of Galba, aflured the guards that Kero w^as fled, and promifed them fuch Aims as neither Gaiba nor any other was able to dii- eharge. This promife fecured for the prefent the em¬ pire to Galba, occalioned afterwards the lofs of it, and, finally, produced the deftruftion of Nymphidius and the guards thtmfelves. After Nero’s death, how¬ ever, and on the acknowledgment of Galba as em¬ peror. he renewed his ambition ; and having, by his immenfe largefles, gained the affeftions of the prx- tonan guards, and perfuading himfelf that Galba, by reafon of his infirmities and old age, would never reach Nyon the capital, ufurped ail the authority at Rome. Pre* ^ ^ fuming upon his interefl, he obliged Tigellinus, who • \ commanded, jointly with him, the praetorian guards, to refign his commiffion. He made feveral magnin- cent and expenfive entertainments, inviting fuch a* had been eonfuta or had commanded armies, diftri- buted large fums amon r the people, and with fhowa and other diverfions, which he daily exhibited, gained fo great an interell with all ranks, that he already looked upon himfelf as fovereign. The fenate, dread¬ ing his power, conferred extraordinary honours upon him, ftyled him their ProtcBor, attended him when he appeared in public, and had recourfe to him for the . confirmation of their decrees* as if he had been already •inverted with the fovereign power. This Uife com¬ pliance elated him to fuch a degree, that he ufiupedr not leifurely and by degrees, but all at once, an ab- folute authority. He adfed as- fovereign indeed, but he had not as yet openly declared his defign of fuzing the empire : his power, however, was great, and he ufed it in undermining Galba’s power ; he was, how¬ ever, imfuocefsful. and the difrlofure of his deiigna was much again if: him. Galba was again acknow¬ ledged and proclaimed, and he, notwithllanding hia artifices, dete&ed and flain by the foldiers who were procl liming Galba. See Nero. NYON, a confiderable town of Switzerland, in the canton of Bern, and capital of a bailiwick of the fame name, with a caftle. It Hands delightfully upon the edge of the lake of Geneva, in the very point where it begins to widen- and in a moll charming country commonly called Pays de Vand. It was formeiiy call¬ ed Colania Eq'iejlns Noiodunum ; and, as a proof of its antiquity, feveral Roman inferiptions. and other an¬ cient remains, have been frequently difeoveredin the out- flcirts of the town. E I.ong. 5. 10. N Eat. 46. 24. NYSA, or Nyssa (anc. geog.), a,town of Ethiopia, at the fouth of Egypt. Some place it in Arabia. This city, with another of tfie famt^ name in India, was facred to die god Bacchus, who was educated there by the nymphs of the plaqe, and who re¬ ceived the name of Dionyftus, which fccros to be compounded of and Nu73 1 Obferv-i- tory. O B S [ i Obolus penny-farthing Sterling.—-The word comes from the Greek ofo*®*, or “ fpit, or broach j” either be- caufe it bore fucli an imprefiion ; or becaufe, accord¬ ing to Euftathius, it was in form thereof. But thofe new in the cabinets of the antiquaries are round. Obolus, in medicine, is ufed for a weight of ten ^grains, or half a fcruple. OBOTH, an encampment of the Hebrews in the wildernefs. From Punon they went to Oboth, and from Oboth to Je-abarim, (Numb. xxi. jo. xxxiii. 43.) Ptolemy fpeaks of a city called Oboda, or Ebo- da, in Arabia Petrsea, which is the fame as Oboth. Pliny and the geographer -Stephanus mention it alfo. Stephanus makes it belong to the Nabathseans, and Plitry to the Helmodeans, a people of Arabia, ft was at Obeth that they wwfhipped the god Obodos, which Tertullian joins with Dufares, another god or king of this country. OBRECHT (Ulric), a learned German, born of a noble family at Stralburg in 1646, where he filled the chairs of civil law and hiftory with great diftinftion. He was of the Proteftant religion ; but when Louis XIV. made himfelf mafter of Strafburg, and went there with his court, he was prevailed on to change; and accordingly abjured in 1684, and put his inftru- ment into the hands of Bofluet bifhop of Meaux. The next year the king nominated him to prefide in his name in the fenate of Strafburg, with the title of prae¬ tor royal, in imitation of the ancient Romans; from which time Mr Obrecht applied himfelf entirely to public affairs. He was the editor, tranflator, and wri¬ ter, of feveral learned works ; and died in 1701. OBREPTITfOUS, an appellation given to letters patent, or other inlliuments, obtained of a fuperior by furprife, or by concealing from him the truth. OBSCURE, fomething that is dark and refle&s little light in material objedts, or that is not clear and intelligible in the obje&s of the intelledl. OBSECRATION, in rhetoric, a figure whereby the orator implores the alfiftance of God or man. OBSEQU ENS (Julius), a Latin writer, conjec¬ tured to have lived before the emperor Plonorius’s reign. He made a collection of the prodigies which Livy related in his hiilory. There are feveral editions of thofe remains. Lycofthenes endeavoured to fupply what was wanting in the original. OBSEQUIES, the fame with funeral folemnities. See Funeral. OBSERVATION, among navigators, fignifies the taking the fun’s or the ftars meridian altitude, in or¬ der thereby to find the latitude. OBSERVATORY, a place deflined for obferving the heavenly bodies; being generally a building erefted on fome eminence, coveted with a terrace for making aflronomical obfervations. The more celebrated obfervatorics are, 1. The Greenwich obfervatory, built in 1676, by order of Charles II. at the felicitation of Sir Jonas Moore and Sir Chriftopher Wren ; and furniihed with the moft accurate iaftruments ; particularly a noble fextant of feven feet radius, with telefcopic fights. 2. The Paris obfervatory, built by the ordet of Louis XIV. in the Fauxbourg St Jacques. It is a very Angular, but withal a very magnificent 3 74 1 O B S building, the defign of Monfieur Perault: it is 80 feet Ohfervj, high ; and at top is a terrace. t0t7* The difference in longitude between this and the Greenwich obfervatory is 20 20'. In it is a cave or cellar, of 170 feet defeent, for ex* periments that are to be made far from the fun, &c. particularly fuch as relate to congelations, refrigera¬ tions, indurations, confervations, See. 3. Tycho Brahe’s obfervatory, which was in the little illand Ween, or Scarlet Ifiand, between the coafts of Schonen and Zealand in the Baltic. It was ere&ed and fumifhed with inftruments at his own ex¬ pence, and called by him Uraniburg. Here he fpent twenty years in obferving the ftars; the refult is hi£ catalogue. 4. Pekin obfervatory. Father Le Compte deferihee a very magnificent obfervatory, erected and furnifhed by the late emperor of China, in his capital, at the interceflion of fome Jefuit mifiionaries, principally Father Verbeift, whom he made his chief obferver.— The inftruments are exceedingly large ; but the divi- fion lefs accurate, and the contrivance in fome refpe&s lefs commodious, than that of the Europeans. The chief are. An armillary zodiacal fphere of fix feet dia¬ meter ; an equinoctial fphere of fix feet diameter ; an. azimuthal horizon of fix feet diameter; a large qua¬ drant fix feet radius ; a fextant eight feet radius ; and a celeftial globe fix feet diameter. Obfervatories, as they are very ufeful, aild indeed abfolutely neceffary for ailronoraers, fo they have be¬ come far more common than they were. There is a very excellent one now at Oxford, built by the truftees of Dr Radcliffe, at the expence of nearly 30,000 L At Cambridge there is as yet no public obfervatory. Over the great gate of Trinity college, indeed, there is one which is called Sir Ifaac Newton’s, becaufe this great philofopher had ufed it; but it is gone to decay. It were well if the univerfity would repair and preferve it in memory of that truly great man. In St John’s, too, there is a fmall one. The late ingenious Mr Cotes had ufed to give lectures in Sir Ifaac Newton's on experimental philofophy. There are feveral very good ones in the Scotch univerfities; and there is an excellent one lately ere&ed at Dublin. 5. Bramins obfervatory at Benares. Of this Sir Robert Barker gives the following account, (Phil. Tranf. Vol LXVII. p. 598.) “ Benares in the Eaft Indies, one of the principal feminaries of the Bramins or priefts of the original Gentoos of Hindoftan, con¬ tinues (till to be the place of refort of that fe75 3 O B Y [ 1/6 ] O C G Obferva* glaffes, had neverthelefs an advantage unexperienced tD.‘T by the obfervers of the more northern climates. The Ot>y. ferenity and clearncfs of the atmofphere in the night- ts—Y-—' time in the Eaft Indies, except at the feafons of changing the monfoons or periodical winds, is dif¬ ficult to exprefs to thofe who have not feen it, be- caufe we have nothing in comparifon to form our ideas upon : it is clear to perfection, a total quietude fubfifts, fcarcely a cloud to be feen, and the light of the heavens, by Jthe numerous appearance of the liars, affords a profpett both of wonder and contem¬ plation. “ This obfervatory at Benares is faid to have been built by the order of the emperor Ackbar : for as this wife prince endeavoured to improve the arts, fo he wifhed alfo to recover the fciences of Hindoflan, and therefore directed that three fuch places fhould be erected; one at Delhi, another at Agra, and the third at Benares.” Edinburgh Osservatort. See Edinburgh. OBSID1ANUS lapis, in the natural hiflory of the ancients, the name of a ftone which they have al¬ fo defcribed under the name of the Churn marble. It is a very fmooth and hard marble, extremely difficult to" cut, but capable of a fine polifh ; and was ufed among the ancient Greeks for the purpofe of making reflecting mirrors. The later writers have fuppofed the name objidianus to be derived from fomebody called Cljtdius, who was the inventor of this ule of it; but it feems only a falfe fpelling of the word opfanus, ktto ruf oyi&y from feeing the images of things in it. See Gallinacevs Lapis. OBS1DIONAL1S, an epithet applied by the Ro¬ mans to a fort of crown. See the article Crown. OBSTETRICS, or the Obstetric Art, the fame with Midwifery. OBSTRUCTION, in medicine, fueh an obtura¬ tion of the veffels as prevents the circulation of the fluids, whether of the found and vital, or of the mor¬ bid and peccant kind, through them. OBTURATOR, in anatomy. See Anatomy, Table of the Mufcles. OBTUSE, fignifies blunt, dull, &c. in oppofition to acute or fliarp. Thus we fay, obtufe angle, oh* tufe-angled triangle, &c. OBY, or Ob, a large and famous river of Afiatic Ruffia, which iflues from the Altin lake (called by the Ruffians Tehjhoi-Ofcro), in latitude 52 degrees, and longitude 103 degrees 30 minutes. Its name fig¬ nifies Great; and accordingly in Ruffia it is often ftyled the Great River. The Calmucks and Tartars call it Umar. Its ftream is very large and fmooth, its current being ufually flow ; and it is in general be¬ tween two and three hundred fathoms broad; though in Jome places it is much wider. It affords plenty of fifh, and is navigable almoft to the lake from which it fprings. After a long winding courfe through a vaft trad of land, in which it forms feveral iflands, it empties itfelf in latitude 67 degrees, and longitude 86 degrees, into a bay, which, extending near 400 miles farther, joins the Ice Sea in latitude 73. 30. and longitude 90. The fprings from which this ri- ver rifes, are not very copious ; but it receives in its ■courfe the waters of a great number of confiderable itreams. Of thefe, the Tom and the Irtis are the N°245. moft confiderable: the Tom falls into it in Lat. 58. Occident and the Irtis in Lat. 61. and Long. 86. The exsd 11 courfe of this river was unknown, till the country 0ccuPan(7< was furveyed by the Ruffians; who have given us * tolerable maps ©f it and of all Siberia. The Oby forms the boundary between Europe and Alia, and its courfe is upwards of 2000 miles in length. OCCIDENT, in geography, the weftward quar¬ ter of the horizon ; or that part of the horizon where the ecliptic, or the fun therein, defeends into the lower hemifphere; in contradiftinftion to orient. Hence we ufe the word occidental for any thing belonging to the weft ; as occidental bezoar, occidental pearl, &c. OCCIPITAL, in anatomy, a term applied to the parts of the occiput, or back part of the fliull. OCCULT, fomething hidden, fecret, or invifible. The occult fciences are magic, necromancy, cabbala, &c. Occult qualities, in philofophy, were thofe qua¬ lities of body or fpirit which baffled the inveftigation of philofophers, and for which they were unable to give any reafon : unwilling however to acknowledge their ignorance, they deceived themfelves and the vul¬ gar by an empty title, calling what they did not know occult. Occult, in geometry, is ufed for a line that is fcarce perceivable, drawn with the point of the com- paffes or adeaden pencil. Thefe lii.»s are ufed ia fe¬ veral operations, as the raifing of plans, defigns of building, pieces of perfpe&ive, &c. They are to be effaced when the work is finifhed. OCCULTATION, in aftronomy, the time a ftar or planet is hid from our fight, by the interpofition of the body of the moon or fome other planet. OCCUPANCY, in law, is the taking poffefiion of Bladfl. thofe things which before belonged to nobody. This CmmenU is the true ground and foundation of all Property, or of holding thofe things in feverahy, which by the law of nature, unqualified by that of fociety, were com¬ mon to all mankind. But, when once it was agreed that every thing capable of ownerfhip ftiould have an owner, natural reafon fuggefted, that he who could firft declare his intention of appropriating any thing to his own ufe, and, in confequence of fuch his inten¬ tion, aftually took it into poffeffion, fhould thereby gain the abfolute property of it; according to that rule of the law of nations, recognifed by the laws of Rome, Quod nullius ejl> id raiione naturali occupanti con" ceditur. * This right of occupancy, fo far as it concerns real property, hath been confined by the laws of England within a very narrow compafs; and was extended only to a fingle inftance ; namely, where a man was tenant pour autre vie, or had an eftate granted to himfelf only (without mentioning his heirs) for the life of another man, and died during the life of cefluy que vie, or him by whofe life it was holden : in this cafe, he that could firft enter on the land, might lawfully retain the poffeffion fo long as cefuj que vie lived, by right of occupancy. This feems to have been recurring to firft principles, and calling in the law of nature to afeertain the pro¬ perty of the land, when left without a legal owner. For it did not revert to the granter, who had parted with all his intereft, fo long as cefuy que vie lived ; it did Hate C CCXLVin . t / { y O C C [ T Ocrtir'a',ev. Ji(3 not cfcheat to the lord of the fee; for all efeheats v—tnnfl be of the abfolate entire fee, and not of any par¬ ticular eftate carved out of it, much lefs of fo minute a remnant as this : it ('id not belong to the grantee ; for he was dead : it did not defeend to his heirs ; for there were no words of inheritance in the grant : nor could it veil in his executors; for no executors could fucceed to a freehold. Belonging therefore to no¬ body, like the huereditas jacens of the Romans, the law left it open to be feized and appropriated by the fir It perfon that could enter upon it, during the life of cejiuy que "vie, under the name of an occupant. But there was no right of occupancy allowed, where the king had the reverfion of the lands : for the reverfioner hath an equal right with any other tnan to enter upon the vacant poffeffion; and where the king’s title and a fu! jedt’s interfere, the king’s (hall always be prefer¬ red. Againll the king therefore there could be no prior occupant, becaufe nullum tempus occurrit regi. And, even in the cafe of a fubjeft, had the eftate pour autre vie granted to a man and his heirs during the life of cefhiy qui vie, there the heir might, and ftill may, enter and hold poflefiion, and is called in law a /pedal occupant i a« having a fpecial exclufive right, by the terms of the priginal grant, to enter upon and occupy this hceredflas jacens, during the refn'ue of the eftate granted : though fome have thought him fo called with no very great propr ety ; and that fuch eftate is rather a delcendible freehold. But the title of common occupancy is now reduced almoft to nothing by two ftatutes ; the one, 29 Car. II. c. 3. which en- adls, that where there is no fpecial occupant, in whom the eftate may veil, the tenant tour autre vie may de vife it by will, or it (hall go to the executors, and be aftets in their hands for payment of debts: the other that of 14 Geo. I L. c. 40. which en its, that it ftiall vcft not only in the executors, but, in cafe the tenant dies inteftate, in the admin ill rators alfo ; and go in courfe of a iitribution like a chattel intereft. By thefe two ftatutes the title of common occupancy is utterly extinft and abolifhed : though that of fpecial occupancy, by the heir at law, continues to this day ; fuch heir being held to fucceed to the anceftor’s eftate, not by defeent, for then he mult take'an eftate of in¬ heritance, but as an occupant, fpecially marked out and appointed by the original-grant. The dottrine of common occupancy may, however, be ufetully re¬ membered on the following account, amongll others : That, as by the common law no occupancy could be of incorporeal hereditaments, as of rents, tithes, ad- vowfons, commons, or the like, (becaufe, with refpeft to them, there coul 1 be no aftual entry made, or corpo¬ ral feifrn had ; and therefore by the death of the gran tee pour autre •vie a grant of fuch hereditaments was entirely determined) : fo now, it is apprehended, not- vithftanding thofe ftatutes, fuch grant would be de¬ termined likewife ; and the hereditaments could not be devifeafcle, nor veil in the executors, nor go in a courfe of diftribution. For the ftatutes mull not i e con ftrued fo as to create any new ellate, or to keep that alive which by the common law was determined, and thereby to defeat the granter’s reverfion ; but merely to difpofe of an intereft in being, to which by law there was no owner, and which therefore was left open to the firtt occupant. When there is a re fid ur Vot. XIII. Fart I. 77 ] . 0 c c left, the ftatutes give it to the executors, A:c. inftead Occupancy, of the firft occupant *, but they will not create a re- fidue on purpofe to give it to the executors. They only mean to provide an appointed inftead of a cafual, a certain inftead of an uncertain, owner, of lands which before were nobody’s ; and thereby to fupply this cafus omiffus, and render the difpofition of the law in all refpe&s entirely uniform : this being the only inftance wherein a title to a real eftate could ever be acquired by occupancy. For there can be no other tale devifed, wherein there is not fome owner of the land appointed by the law. In the cafe of a foie corporation, as a pirfon of a church, when he dies or refigns, though there be no adual owner of the land till a fucceftbr be appointed, yet there is a legal, potential, ownerlhip. fublifting in contemplation of law ; and when the fucceffor is ap¬ pointed, his appointment fhall have a retrofpetl and relation backwards, fo as to entitle him to all the pro¬ fits from the inftant that the vacancy commenced. And, in all other inftances, when the tenant dies in- teftate, and no other owner of the lands is to be found in the common courfe of defeents, there the law veils an ownerfhip in the king, or in the fubordinate lord of the fee, by efeheat. So alfo, in fome cafes, where the laws of other na¬ tions give a right by occupancy, as in lands newly created, by the riling of an illand in a river, or by the alluvion or dereluftion of the fea ; in thefe inftan¬ ces, the law of England affigns them an immediate owner. For Bradlon tells us, that if an ifland arife in the middle of a river, it" belongs in common to thofe who have lands on each fide thereof; but if it be nearer to one bank than the other, it belongs only to him who is proprietor of the neareft ftrore : which is agreeable to, and probably copied from, the civil law. Yet this feems only to be reafonable, where the fo l of the river is equally divided between the owners of the oppofite fhores: for if the whole foil is the free¬ hold of any one man, as it mull be whenever a feveral filhery is claimed, there it feems juft (and fo is the ufual pradliee) that the illets, or I ttle iflands, arifing in any part of the river, (hall be the property of him who owneth the pifeary and the foil. However, in cafe a new illand rife in the fea, though the civil law gives it to the firft occnpant, yet our’s gives it to the king.* A.nd as to lands gained from the fea ; either by allu¬ vion, by the wafhing up of fand and earth, fo as in time to make terra/nna ; or by dereliction, as when the fea ihrinks back below the ufual water-mark ; in thefe cafes the law is held to be, that if this gain be by little and little, by fttudl and imperceptible de¬ grees, it ft all go to the owner of the land adjoining. For de minimis non cu at lex : and, betides, thefe own¬ ers being often lofers by the breaking in of the fea, or at charges to keep it out, this poffi de train is there¬ fore a reciprocal confideration for fuch pbffible charge or lofs. But it the alluvion or derelidlion be hidden and confiderable, in this cafe it belongs to the king: for, as the king is lord of the fea, and fo owner of the foil while it is covered with water, it is but reafonable he fhould have the foil when the water has left it dry. 80 that the quantity of ground gained, and the time during which it is gained, are what make it either the king’s or the fubjedt’s property. In the fame manner, Z if O C E [ 178 ] 0 C H Oceanides. Occupant Jf a river, running between two lord Hi Ip s, by degrees gains upon the one, and thereby leaves the other dry; the owner who lofes his ground thus imperceptibly has no remedy : but if the courfe of the river be changed bv a fudden and violent flood, or other hafty means, and thereby a man lofes his ground, he fhsll have what the river has left in any other place as a recompenfe for this fudden lofs. And this law of alluvions and de- reliftions, with regard to rivers, is nearly the fame in the imperial law; from whence indeed thofe our deter¬ minations feem to have been drawn and adopted : but we ourfelves, as iflanders, have applied them to ?na~ rine increafes ; and have given our fovereign the pre¬ rogative he enjoys, as well upon the particular rea- fons before-mentioned, as upon this other general ground of prerogative, which was formerly remarked, that whatever hath no other owner is veiled by law in the king. See Prerogative. OCCUPANT, in law, the perfou that firil fcizes or gets pofleffion of a thing. OCCUPATION, in a legal fenfe, is taken for ufe or tenure : as in deeds it is frequently faid, that fuch lands are, or were lately, in the tenure or occupation of fuch a perfon.—It is likewife ufed for a trade or myllcry. OCCUPIERS ©/"Walling, a term ufed in the falt- works for the perfons who are the fworn officers that allot in particular places what quantity of fait is to be made, that the markets may not be overftocked, and fee that all is carried fairly and equally between the lord and the tenant. OCEAN, that huge mafs of fait waters which encompaffies all parts of the globe, and by means of which, in the prefent improved Hate of navigation, an eafy intercourse fubfifts between places the moll diftant. The ocean is diltinguilhed into three grand divi- fions. 1. The Atlantic ocean, which divides Europe and Africa from America, which is generally about 3000 miles wide. 2. The Pacific ocean, or South- fea, which divides America from Afia, and is gene¬ rally about 10,000 miles over. And, 3. The Indian ocean, which feparates the Eaft Indies from Africa ; which is 3000 miles over. The other feas, which are called oceans, are only parts or branches of thefe, and ufually receive their names from the countries they border upon. For the faltnefs, tides, &c. of the ocean, fee the articles Sea, Tides, &c. OCE ANIDES(fab.hift.), fea-nymphs,daughters of Oceanus, from whom they received their name, and of the goddefsTethys orThetis. They were 3000 accord¬ ing to Apollodorus, who mentions the names of feven of them; Afia, Styx, Eleftra, Donis, Eurynome, Am- phitrite, and Metis. Hefiod fpeaks of the eldeft of them, which he reckons 41, Pitho, Admete, Prynno, lanthe, Rhodia, Hippo, Callirhoe, Urania, Clymene, Idyia, Pafithoe, Clythia, Zeuxo, Galuxaure, Plexaure, Perfeis, Pluto, Time, Polydora, Melobofis, Dione, Cerceis, Xanthe, Acafla, lanira, Teleftho, Europa, Meneflho, Petrea, Eudora, Calypfo, Tyche, Ocyroe, Crifia, Amphiro, with thofe mentioned by Apollodo¬ rus, except Amphitrite. Hyginus mentions 16 whofe names are almoil all different from thofe of Apollodo¬ rus and Hefiod ; which difference proceeds from the mutilation of the original text. The Oceanides, like Ochinin. the reft of the inferior deities, were honoured with li- Oceanus bations and facrifices. Prayers were offered to them, and they were entreated to p^oteft failors from ftotms and dangerous tempefts. The Argonauts, before they proceeded to their expedition, made an offering of flour, honey, and oil, on the fea-fliore, to all the dei¬ ties of the fea, and facrificed bulls to them, and in- treated their proteftion. When the facrifice was made on the fea-fhore, the blood of the vidlim was received in a veflel; but when it was in open fea, they permit¬ ted the blood to run down into the waters. When the fea w*as calm, they generally offered a lamb or a young pig ; but if it was agitated by the winds and rough, a black bull was deemed the moft. acceptable vidlim. OCEANUS, in Pagan mythology, the fon of Cce- lus and Terra, the hufband of Thetis, and the father of the rivers and fountains, called Oceanides. The an¬ cients called him the Father of all things, imagining that he was produced by Humidity, which, according to Thales, was the firft principle from which every thing was produced. Homer reprefents Juno vifiting him at the remateft limits of the earth, and acknovv^ ledging him and Thetis as the parents of the gods. He was reprefented with a bull’s head, as an emblem of the rage and bellowing of the ocean when agitated by a ftorm. According to Homer, he was the father even of all the gods, and on that account he received frequent vifits from them. He is often, indeed almoft always, re¬ prefented as an old man with a long flowing beard, and fitting upon the waves of the fea. He often holds a pike in his hand, while ffiips under fail appear at a diftance, or a fea monfter Hands near him. Oceanus prefided over every part of the fea, and even the rivers were fubje&ed to his power. The ancients were fu- perftitious in their woifln'p of him, and'revered with great folemnity a deity to whofe care they entrufted themfelves when going on any voyage. OCEIA, a woman who prefided over the facred rites of Vefta for 57 years with the greateft faixftity. She died in the reign of Tiberius, and the daughter of Domitius fucceeded her. OCELLUS Lucan IAN, an ancient Greek phi- lofopher of the fchool of Pythagoras, who lived before Plato. His work tw nccvhc, or “ The Univerfe," is the only piece of his which is come down entire to us; and was written originally in the Doric dialeft, but was tranflated by another hand into the Attic. William Chriftian, and after him Lewis Nogarola, tranflated this work into Latin; and we have feverai editions of it, both in Greek and Latin. OCELOT, the Mexican cat. See Felis. OCELOXOCHITL, or tyger-flower, in bo¬ tany: A large Mexican plant, compofed of three pointed petals, red, but towards the middle of a mixed white and yellow, reprefenting in fome degree tl^ fpots of that wild animal from which it takes its name. The plant has leaves alfo refembling thofe of the iris, and a bulbous root. See Plate CCCL. OCHINUS (Bernardin), a celebrated Italian, was born at Siene in 1487, and firft became a Cordelier ; but he quickly returned into the world, applied him- felf to the ftudy of phyfic, and acquired the efteem of cardinal Julius de Medicis, afterwards Pope Clement VII. At length, again changing his mind, he refu¬ med O C H r 170 ] o C *H Ochinr-s med hie monk’s kabit in a penitential mood ; and not ' content with this, kut aiming at higher perfection, he embraced in 1534 the reformed fe£t of the Capuchins. He praCtifed, with a moft rigorous exaCtnefs, all the rules of the order; which, being then in its infancy, ke contributed fo much to improve and enlarge, that fome writers have called him the founder of it. He was certainly made vicar-general of it, and became in the highcft degree eminent for his pulpit eloquence. He delivered his fermons with fo much gtace and pohte- nefs, and fpoke fo copioufly, that he ravifhed his au¬ dience wherever he was: never indeed was a man more fuccefsful or more applauded. His extraordinary me¬ rit procured him the favour of Pope Paul III. who, it is faid, made him his father confeffor and preacher. He was thus the darling both of prince and people} when,' falling into the company of one John Valde a Spaniard, who had imbibed Luther’s doftrine in Ger¬ many, he became a profelyte. He was then at Naples, and began to preach in favour of Protellantifm: which being obferved, he was fummoned to appear at Rome; and was inh is way thither when he met at Florence I Peter Martyr, with whom, it is probable, he had be¬ come acquainted at Naples. This friend perfuaded him not to put himfelf into the pope’s power ; and they both agreed to withdraw to fome place of fafety. Ochinus went firll to Ferrara, where he difguifed him¬ felf in the drefs of a foldier 5 and proceeding thence to Geneva, arrived there in 1542, and married a (woman of Lucca. He did not, however, fettle there, but went to Augfburg, where he publifhed fome fer- mons. In 1547 he was invited, together with Peter Mar¬ tyr, into England by Archbifliop Cranmer, that he might have their joint affiftance in carrying on the re¬ formation. They arrived in December ; and going .to Lambeth, were kindly received by Cranmer. They were entertained there for fome time ; and Ochinus, as well as Martyr, was made a prebendary of Canter¬ bury (a). He laboured heartily in the conduft of the reformation; and his dialogue upon the unjuft ufurped primacyof thebifhop of Rome, was tranflated into Latin by Ponet bilhop of Winchefter, and publiftied in 1549. Rut upon the death of EdwardVI. being forced as well as Martyr to leave England, they retired to Stiafhurg, where they arrived in 1553. From this city Ochinus went to Bafil, and was invited thence in 1555 to Zu¬ rich, to be minifter of an Italian church which was ga¬ thering there. This church confifted of fome refugees from Locarno, one of the four bailiwicks which the Switzers poflefs in Italy ; they being hindered from the public exercife of the reformed religion by the oppofition of the Popilli cantons. Ochinus had no difficulty to fubfcribe the articles of faith agreed upon by the church of Zurich, and met in that city with Bullinger, who proved a very good friend to him. He governed this Italian chuich till 1563, when he was banifhed thence by the magiftrates of the town for publilhing fome dialogues, wherein he defended the dottrine of polygamy. From Zurich he went to Balil; but not being fuffered to ftay there, he fled in great diftrefs into Moravia, where he fell in with the Ochmui Socinians, and joined them. Staniflaus Lubiemetlki, 0cht1J)ma> the great patron of this feft, gives the following ac* —1 count of his laft days in his Htft. Reformat. Polon. Ochi¬ nus, fays he, retired into Moravia, and into Poland, and even there he was not out of the reach of Calvin’s letters. He returned into Moravia after king bigif- mund’s edift ; who in 1564 puniftied with banilhment all thofe that were called Tritheifta, Atheifts, &c. Some gentlemen endeavoured to keep him in Poland ; but he anfwered, that men muft obey the magiftrates, and that he would obey them, even were he to die among the wolves in the woods. During his travels, he fell fick of the plague at Pinckfow, and received there all poffible bffices of kindnefs from one of the brethren, named Philippovius. His daughter and two fons, whom he carried along with him, died of the plague ; but he had buried his wife before he had left Zurich. As for himfelf, he continued his journey to Moravia, and within three weeks died at Slakow, in 1564, aged 77. His character is varioufly reprefented by different authors, as was to be expe&ed; for men like him have all manner of things, good and bad, faid and written of them, by fomebody or other. Bayle fays, that the confeflion he made publicly, on the change of his re¬ ligion, is remarkable. He acknowledged, in a preface, that if he could have continued, without danger of his life, to preach the truth, after the manner he had preached it for fome years, he would never have laid down the habit of his order; but as he did not find within himfelf that courage which is requifite to un¬ dergo martyrdom, he took fanduary in a Proteftant country. His writings are numerous, but not bulky. OCHLOCRACY, that form of government where¬ in the populace have the chief adminiftration of af¬ fairs. OCHNA, in botany: A genus of the monogynia order, belonging to the polyandria clafs of plants ; and in the natural method ranking with thofe of which the order is doubtful. The corolla is pentapetalous ; the calyx pentaphyllous; the berries monofpermous, and affixed to a large roundiffi receptacle. OCHRE, in natural hiftory, a genus of earths, {lightly coherent, and compofed of fine, fmooth, foft, argillaceous particles, rough to the touch, and readily diffufible in water. Ochres are of various colours, as red, blue, yellow, brown, green, &c. OCHROMA, in botany : A genus of the pentan- dria order, belonging to the monodelphia clafs ot plants ; and in the natural method ranking under the 37 th order, Columnifera. The corolla con lifts of fix petals, three of which are external, and the other three internal; the anther® unite and form a fpiral pillar round the ftyle; the capfule is long, and has five lo- culaments, and contain a number of black round feeds. Of this there is only one fpecies, v't%. the ochroma la- gopus, the downtree or corkwood. This tree is fre¬ quent in Jamaica, is of fpeedy growth, and rifes to about 25 or 30 feet. The flowers are large and yel¬ low. The capfules are about five inches long, round- Z 2 ed, (a) According to Wood, Athen. Oxon. but it refts folely on his authority, fo far as we know. o' C K [ 180 ] OCR Ocbus Ockbani. ed, and covered with a thin ikin ; which when dry- falls off in five longitudinal fegments, and leaves the fruit greatly refembling a hare’s foot. The down is fhort, foft, and filky : it is ufed fometimes to ftuff beds and pillows ; bat, like other vegetable downs, is apt to get into clots : an infipid clear gum exudes from the tree when wounded. The bark is tough, and its fibres are in a reticulated form : it might be made into ropes. The dried wood is fo very light and buoyant, as to be ufed by the fiihermen in Ja¬ maica for their nets inflead of pieces of cork. OCHUS, a king of Perfia, fon of Artaxerxes. Pie was cruel and avaricious; and in order to ftrengthen himlelf on his throne, he murdered all his brothers and lifters. His fubjedfs revolted ; but he reduced them to obedience, and added Egypt to his other do¬ minions. Bagoas his favourite eunuch poifoned him lor the infults he had offered to Apis the god of the Egyptians; and he gave his flefh to be eaten by cats, and made handles for knives with his bones. It feems to be not a little remarkable, that all thofe monfters who difgraced humanity by their crimes, and funk themfelves below the level of brutes, have met with condign punifhment; and this in general feems true, whether we refer to ancient or modern times.—A man of Cyzicus, who was killed by the Argonauts.—A prince of Perfia, who refufed to vifit his native coun¬ try for fear of giving ail the women each a piece of gold.—A river of India or of Baftriana.— A king of Perfia : He exchanged this name for that of Darius Nothus. See Persia.. OCKHAM, Occam, or Occham (William of), was a celebrated fcholaftic divine in the 14th century, »f the order of Cordeliers. He was a native of Eng¬ land, and difciple to the famous Duns Scotns. He was head of the Nominalifts; and acquired fo much celebrity, as to be denominated the Invincible Doc¬ tor. At the requeft @f Michael de Cefena, general of his order, he became a party-man with Lewis of Raviere, who was an avowed enemy of the church of Rome ; and he really wrote vigorouily againft pope John XXII. and his fucceffors. Trithemius informs us, that*he ufed to fay to Lewis, “ My Lord, let your fword de¬ fend me, and my pen fhall be always ready to fupport you.” He treated Charles and Clement in a book he wrote sgainll them with grofs fcurrility. This, however, was a bold, dangerous, and impru¬ dent ftep, and cannot well be defended on any proper principle. The effeft of it, as might be expefted, was an accufation againll him and Cefena. They were charged with maintaining, that neither Chrift: nor his apoftles had any peffefiions at all, either in common or as private property. This dodfrine gave rife to that pleafant queftion called the bread of the Cordeliers; and confifted in determining, whether the dominion of things confumcd in the ufe, fuch as bread and wine, belonged to them, or only the fimple ufe of them, without the dominion? Their rule not permitting them to have any thing as property, Pope Nicolas III. who had been of their order, devifed a method to enrich them, without breaking their rule. To this end he made an oidinance, that they fhould have only the uiufriKfr of the eftates which ftiould be given to them, and that the foil and fund of all fuch donations fhould belong to the Roman church at large. By this means he gave them the poffefiion of an almoft infinite number of eftates, in the name of the church of Rome : but on this account, Pope Nicolas’s bull was revoked by John XXII. who condemned the ufe without the dominion, by his Extravaganta ad Conditorem. Healfo condemned, by another Extravaganta cum inter, the do&rine about the pofieffion of eftates by Chrift and his apoftles. Ockham and Cefena were alfo excommu¬ nicated, becaufe they had departed from Avignon without the pope’s licence, and had written againft him. Ockham, however, was abfolved, as is faid, from this cenfure before he died, w-hich was about the year 1347. We have feveral pieces of his, which are written with eonfiderable wit and fubtilty. The reformed church fometimes makes ufe of his reafoning againft the church of Rome. Melchior Goidaft printed, in his treatife upon monarchy, 413 queftions of Ockham. His works are mentioned by many au¬ thors. OCKLEY (Simon), a learned orientalift. was born at Exeter in 1678, and educated at Queen’s college, Cambridge, where he diftinguifhed himfelf by his in- tenfe application to literature. At the ufual time he took the degrees in arts, and that of bachelor in di¬ vinity ; but marrying very young, was precluded from a fellowfhip in his college, and this oceafioned his be¬ ing afterwards involved in many difficulties. In 1705 he was prefented to the vicarage of Swavefey in Cam- bridgefhire ; and in 1711 he was chofen Arabic pro- feffor of the univerfity. He was perfect mailer of the Arabic and other oriental tongues: the learned Ro¬ land faid of him, “ Vir, fi quis alius harum literarum peritus.” Afterwards, however, he had the misfor¬ tune to be confined for fome time in Cambridge caftle for debt. The above preferments, notwithftanding, he enjoyed till his death, which happened on the 9th of Auguft 1720. He wrote, 1. IntroduSio ad Lmguas Orientales. 2. The hiftory of the prefent Jews through¬ out the world; tranflated from the Italian of Leo Mo¬ dena, a Venetian rabbi. 3. The improvement of hu¬ man reafon, exhibited in the lift of Hai Ebn Yokdhan, tranflated from the Arabic. 4. An account of South- well Barbary, containing what is moft remarkable in the kingdoms of Fez and Morocco ; written by a per- fon who had been a flave there a conliderable time, and tranflated from his manufeript. 5. The hiftory of the Saracens, collected from the molt authentic Arabic authors, in 2 vols 8vo. He was not only well fkiiled in the learned languages, but alfo in the modern, as French, Spanifh, Italian, &e. OCR A, a vifeous vegetable fubftance well knov/n. in the Weft Indies, where it is ufed to thicken foup,. and for other purpofes. OCRISIA (fab. hill.), the wife of Corniculus, was one of the attendants of Tanaquil the wife of Tarqui- nius Prifcus. As Ihe was throwing into the flames for offerings fome of the meats that were ferved on the table of Tarquin, fhe fuddenly faw, as is reported, in the fire what Ovid calls obfcceni forma virllis. She in¬ formed the queen of it ; and when by her command fhe had approached near it, Are conceived a fon who. was named Servius Tullius, and was educated in the king’s family. He afterwards fucceeded to the va- 5. cant OCT [ 18 cant throne. Some fuppofe that Vulcan had affumed that form which was prtfented to the eyes of Ociilia, and that this god was the father of the fixth king of Rome. . OCTAETERIS, a cycle or term of eight years, in the Grecian chronology, at the conclufion of which three entire lunar months were added. I his cy^le was in ufe till Melon’s invention of the golden num¬ ber or cycle of 19 years. OCTAGON, or Octogon, in geometry, is a figure of eight Tides and angles; and this, when all the fidec and angles are equal, is called a regular o£lagon, or one that may be infcribed in a circle. Octagon, in fortification, denotes a place that has eight baftions. See Fortification. OCTAHEDRON, or Octaedrqn, in geometry, one of the five regular bodies, confiding of eight equal and equilateral triangles. OCTANDRIA (1*™ “eight,” and a ♦‘man, or hufoand,”) the 8th clafs in Linnaeus’s fexual fyftem; confiding of plants with hermaphrodite flowers, which hr; fnrnifhed with eight itamina, or male organs of ge¬ neration. See Botany, p. 43°' OCTANT, or Octile, in aflronomy, that afpe& of two planets, wherein they are diilant an eighth part of a circle, or from each other. OCTAPLA, in matters of facred literature, de¬ notes a polyglot bible, confiding of eight columns, and as many different verfions of the facred text ; viz. the original Hebrew both in Hebrew and Greek cha- raefers, Greek verfions, &c. GCTATEUCH, an appellation given to the eight firft books of the Old Tedament. OCTAVE, in mufic. See intcrval. OCT A VI A, daughter of Cains O&avius and fider to Auguftus Caefar." See the following article. She was one of the mod illuftno.us latucs of ancient Rome t her virtues and her beauty were equally confpicuous. Prideaux fays die was much Irandfomer than Cleopa¬ tra. She married Claudius Marcellus, and after his death M. Antony. Her marriage with Antony was a political match, to reconcile her brother and him together. Antony proved for fome time attentive to her; but when he had feen Cleopatra, he neglefted and defpifed her; and when die attempted to with¬ draw him from this illegal amour by going to meet him at Athens, die was rebuked and totally banidied from his prefence. This affront was highly relented by her brother; and though Gddavia endeavoured to pacify him by palliating Antony’s behaviour, yet he. refolved to revenge her caufe by arms. After the battle of aiumand the death of Antony, Odfavia, forget¬ ful of her own injuries, took into her houfe all the children of her hufband, and.treated them with extra¬ ordinary tendernefs. Marcellus, her fon by her lirit hud)and, was married to a niece of Auguftus, and open¬ ly intended as a fucceffor to his uncle. His hidden death plunged all the family into the greateft grief. Virgil, whom Auguftus patronized, undertook of himftlf to pay a melancholy tribute to the memory of a young man whom Rome had looked upon as her future father and patron He was defired to repeat !us compofition in the prefence of the emperor and his filler. O&avia buril .into tears even when the i ] OCT poet began ; but when he mentioned Tu Marcellus 06hyia, erisy fhe fwooned away. This tender and pathetic encomium upon the merit and the virtues of young Marcellus fhe liberally rewarded, and Virgil received 10,000 feflerces, according to fome L.78 : 2 : 6, for every one of the verfes. Odtavia had two daughters by Antony, Antonia Major and Antonia Minor, d he elder married L. Domitius Ahenobarbus, by whom fhe had Cn. Domitius, who was the father of the Emperor Nero by Agrippina the daughter of Ger- manicus. Antonia Minor, who was as virtuous and as beautiful as her mother, married Drufus the fon of Tiberius, by whom fhe had Germanicus and Claudius, who reigned before Nero. The death of Marcellas conflantly preyed upon the mind of OAavia, who died of grief or melancholy, about 11 years before the Chriftian era. Her brother paid great regard to her memory, and pronounced her funeral oration himielf. The Roman people alfo fhowed their regard for her virtues, by wifliing to pay her divine honours.—A daughter of the Emperor Claudius by Meffalina. She was betrothed to Silanus, but by the intrigues of Agrippina, fhe was married to the Emperor Nero in the 16th year of her age. She was foon after di¬ vorced under pretence of barrennefs; and the emperor married Poppaea, who exercifed her enmity upon Ootavia by procuring her to be banifhed into Cam¬ pania. She was afterwards reca’led by the people ; but Poppaea, who was determined on her ruin, caufed her again to be banifhed to an ifland, where fhe tfras or¬ dered to kill herftlf by opening her veins. Her head was cut off and carried to Poppaea. OCTAVIANUS, or Octavius Ca’sar, was ne¬ phew of Julius Ciefar the dictator, being the fon of Accia his filter by Octavius a fenator, and afterwards became the feeond emperor of Rome. He was born in the year of the city 691, during the confulfhip of Cicero. His uncle Julius Cosfar adopted him, and left him the greateft part of his fortune. When he was but 20 years of age, he was raifed to the conful- flrip. His youth and inexperience were ridiculed by his enemies; notwithfianding which obftncle, his pru¬ dence and valour raifed his confequence. He made war againft his opponents on pretence of avenging the air.funatioa of his uncle. He engaged in five civil wars with great futcel's, viz. The wars of Mutina, Perufia, Philippi, Sicily, and Actium : the firft and laft of which were againft M. Antony ; the fecond againil L. Antony brother of the triumvir ; the third was againft Brutus and Caluus ; and the fourth againft Sext. Porapey,Ion of. Pompey the Great. He united his forces with Antony’s at the battle of Phi¬ lippi ; and had he not been fupported by the affivity and bravery of his colleague, he would ddubtlefs have . been totally ruined in that engagement. In his tri¬ umvirate with Antony and Lepidus,-he obtained the weftern parts of the Roman empire ; and, like his other colleagues, more firmly to eftaUftih his power, he pro- feribed his enemies and cut them off. The triumvirate laited for 10 years. He had given his lifter O&avia in marriage to Antony,to make their alliancemore failing; , but when Cleopatra had charmed this unfortunate man, , O&avia was repudiated. Auguftus immediately took up. - arms to avenge the wrongs of his fifter ; but perhaps • OCT [ 18 ■Oft3\’ianiis,morc eagerly to remove a man whofe power and ex- Oekoher. jpence kept him in continual fear and conftant de- ptndence. Both parties met at Aftium to decide the fate of Rome. Antony was fupported by all the power of the eaft, and Auguitus by Italy. Cleopa¬ tra lied from the battle with 60 (hips, and her flight ruined the intereft cf Antony, who followed her into Egpyt. The conqueror foon after went into Egypt, likevvife beflepred Alexandria, and honoured with a mag* ■nifleent funeral his unfortunate colleague and the cele¬ brated queen, whom the fear of being led in the vidor’s triumph at Rome had driven to commit filicide. Af¬ ter he had eflabliflied peace all over the world, he fhut the gates of the temple of Janus, A. U. C. 753. He was twice determined to lay down the fupreme pow'er immediately after the vidory obtained over Antony, and on account of his ill health ; but his two faithful friends Mecaenas and Agrippa diffuaded him, and contended, that if he did he Would leave it to be the prey of the moll powerful, and expofe himfelf to the greateft dangers. He died at Nola in the 76th year ot his age, after he had held the fovereign pow'er for 57 years.—He was an adive emperor, and confulted the good of the Romans with the greateft anxiety and care. He vilited all the provinces except Africa and Sardinia, and his confummate prudence and experi¬ ence occafioned many falutary laws. He is, however, aceukd of licentioufnefs and adultery ; but the good- nefs of his heart, the fidelity of his friendfhip, and the many good qualities which the poets whom he patro¬ nized have perhaps truly celebrated, made fome, though in the eye of ftrid religion and true morali¬ ty but little, amends for his natural foibles. He was ambitious of being efteemed handfome; and as he was publicly reported to be the fon of Apollo according to his mother’s declaration, he wifhed his flatterers to reprefenthim with the figure and attributes of that god. Like Apollo, his eyes were clear, and he af- fefted to have it thought that they pofieffed fome di¬ vine irradiation, and was well pleafed if, when he fix¬ ed his eyes upon any body, they held down their eyes as if overcome by the glaring brightnefs of the fun. He diftinguifhed himftlf by his learning; he wras a complete matter of the Greek language, and wwote fopie tragedies, befides memoirs of his life and other ■vtforks, which are now loft. He married four times ; but he was unhappy in all thefe connections ; and his only daughter Julia difgraced herfelf and her father by the debauchery and licentioufnefs of her manners. Tie recommended at his death his adopted fon Tibe¬ rius as his fucceflbr. He left his fortune partly to him and to Drufus, and made donations to the army and Roman people. The title of Auguftus was confeired upon him by the fenate after the battle of Adtium and the final deflruCtion of the Roman re¬ public. The title continued afterwards, being given to his fucceflbrs in the empire. Virgil is laid to have written his iEneid at the defire of Auguttus, whom lie reprefents under the amiable and perfedl chara&er of Aeneas. T he name of OCfavius was very com¬ mon at Rome; it was the name of a variety of men of very confiderable rank. OCTOBER, in chronology, the eighth month of Romulus’s year, which the name implies; but tenth 2 1 o c z in the kalendar of Numa, Julius Cxfar, &c. The O&ober fenate gave this month the name Faujiinus, in compli- tquus menttoFauftina, the wife of the Emperor Antoninus; w Commodus would have it called Invifius ; and Domi- ^ tian named it Domtianus ; but in fpite of all thefe at¬ tempts it ftill retains its original name. This month was facred to Mars, and under his proteClion. October Equus, a horfe annually facriliced to Mars in the month of Oftober, either becaufe the horfe is a warlike animal, or to punifh him for the taking of Troy. A race was run with chariots, drawn by two horfes, previous to the facrifices, and he that ran quick- eft wTas adjudged to be the victim. OCTOSTYLE, in the ancient architecture, is the face of an edifice adorned with eight columns. OCULUS, the eye, in anatomy. See there, n° 142, Oculvs Belt, in natural hiftory, one of the femi* pellucid gems, of a greyifh white colour, variegated with yellow and with a black central nucleus: it is of a roundifh form, and its variegations very beau¬ tifully reprefent the pupil and iris of the eye ; whence the name. Oculus Mundi, er Lapis Mutabilis. See Hydro* phanes. Oculus Catl. See Asteria. OCYMOPHY LLON, in botany : a name given by Buxbaum to a new genus of plants, the charafters of which are thefe: The flower is of the ftamineous kind, having no petals ; this Hands upon the embryo fruit, which afterwards becomes an oblong quadrangular feed- vefifcl, divided into four cells, and containing roundiih and very fmall feeds; its leaves are like thofe of the common ocymum or bafil, whence its name ; and its place of growth is in damp marfties. Boccone has de- feribed it under the improper name of giaux, calling it the great, green-Jlowercil, marjh giaux. OCYMUM, basil 5 a genus of the gymnofpermia order, belonging to the didy namia elafs of plants; and in the natural method ranking under the 42d order, Ver- ticillat/e- The upper lip of the calyx is orbiculated, the inferior one quadrifid ; the corolla is refupinated, with one lip quadrifid, the other undivided ; the ex¬ terior filament fends out a reflected procefs at the bafe. There are eight fpecies, all of them natives of warm climates, rifing from fix inches to two feet in height, and having a ftrong aromatic fmtll, refembling that of cloves. One of the fpecies is ufed in the kitchen, par¬ ticularly by the French cooks, who make great ufe of it in their foups and fauces. This rifes about ten inches high, fending out branches by pairs oppofite, from the bottom ; the ftalks and branches are four- cornered 5 the leaves are oval, fpear-fhaped, ending in acute points, and are indented on their edges ; the whole plant is haiiy, and has a ftrong feent of cloves too powerful for moft perfons, but to fome it is very agreeable. Thefe plants are propagated by feeds, and will thrive in this country in the open air,and will even ripen their feeds if placed in a ftove or airy glafs-cafe. OCZAKOW, or Oczakoff, a town of Turkey in Europe, and capital of a Sangiack of the fame name, inhabited by Tartars. During a late war, here was a Turkifti garrifon of 20,000 men. However, it was ta¬ ken by the Ruffians in 1737, and all thofe that refifted were put to the f.vord. The Ruffians themfelves loft 6 18,ooo Oczaltow U 11 V yh- Bach; O D A t S,00O men in the afiault. rlhe Turk f?.me year with 70,000 men to retake it ; hut were ob¬ liged to retire, after the lofs of 20,000. In )73^> tlie Ruffians withdrew their garrifon, and demohfhed the fortifications. It is feated on the river Bog, to the well of the Nieper, or rather where they both unite and fall into the Black Sea. It is 42 miles fouth-weft of Bialagrod, and 190 north by call of Conftantinople. It has been lately a fubjea of great conteft between the Ruffians and Turks. The affair is frelh in our readers memories ; but the following more particular account of the place, will not, we truft, be unaccep¬ table to our readers.—It is called by the Burks JDxain Crimenda, is feated at the mouth of the Nieper into the Black Sea, 120 miles from Bender, to the fouth- eaft. The river is here above a mile broad. Hi¬ ther the Turkiffi galleys retire which guard the mouth of the river, to prevent the Coffacks from pi¬ rating upon the Black Sea. Here is no port, but good anchorage. It is defended by a caftle, furround- ed with walls 25 feet high ; thofe of the town are much lower. There are about 2000 people at Oc- zakow. Below the caftle are two towns or fuburbs, fituated on the declivity of a hill, which on the other fide has nothing but precipices. To the fouth of thefe towns is another fmall caftle, where is fome artillery to prevent veffels from coming up the river. Here is alfo a tower, in which are always fome Turks upon the watch to difcover from afar any of the Coffacks at fea, and give notice of them to the galleys by a fig- nal. The city is inhabited by Tartars though garri- foned by Turks. E. Eong. 30. 50. N. Eat. 46. 50. ODA, in the Turkifh feraglio, fignifies a clafs, or¬ der, or chamber. The grand ngnior’s pages are di¬ vided into five claffes or chambers. The firft, which is the lowed in dignity, is called the great oda, from the greater number of psrfons that compofe it; thefe are the juniors, who are taught to read, write, and fpeak the languages. The fecond is called the little oda, where from the age of 14 or 15 years, till about 20, they are trained up to arms, and the ftudy of all the polite learning the Turks are acquainted with. The third chamber, called kilar oda, confifts of 200 pages, which, befidqs their other exercifes, are under the command of the kilardgi-bachi, and ferve in the pan¬ try and fruitery. The fourth confifts only of 24, who are under the command of the khazineda-bachi, and have charge of the treafure in the grand fignior’s apartment, which they never enter with cloaths that have pockets. The fifth is called has oda or privy- ehamler ; and is compofed of only 40 pages who attend in the prince’s chamber. Every night eight of thele pages keep guard in the grand iignior's bed-chamber while he fleeps : they take care that the light, which is conftantly kept in the room, does not glare in his eyes, left it fhould awake him : and if they find him difturbed with troublefome dreams, they caufe him to be awaked by one of their agas. Oda-Bachi, or OddalaJJi, an officer in the Turkifh foldiery, equivalent to a ferjeant or corporal among us. The common foldiers and janizaries, called oldachis, af¬ ter having ferved a certain term of years, are always preferred and made biquelairs ; and of biquelairs in time become odobaehis, i. e. corporals of companies, [ 183 ] ODE returned the or chiefs of certain divifions, whofe number is not fix¬ ed ; being fometimes ten, and fometimes twenty. Their pay is fix doubles per month ; and they are di- ftinguifhed by a large felt, a foot broad and above a foot long, hanging on the back, with two long oftrich feathers. ODE, in poetry, a fong, or compofition proper to be fung. See Poetry. ODED, a prophet of the Lord, who being at Sa¬ maria, when the Ifraelites of the ten tribes returned from the war, with their king Pekah, together with 200,000 of the people of Judah captives, he went out to meet them, and faid, “ You have feen that the Lord God of your fathers was in wrath againft Judah ; he has therefore delivered them into your hands, and you have flain them inhumanly, fo that your cruelty has afeended up into heaven ; and more than this, you would make flaves of the children of Judah, who are your brethren, and would add this fin to the many others you have committed : therefore, hear the coun- fel that I give you ; fend back thefe captives, left the Lord ftiould pour out his fury upon you.” Oded ha¬ ving done fpeaking, fome of the chiefs of Samaria fe- conded him, and by their remonftranccs prevailed with the Ifraelites to fet the captives at liberty (2 Chron. xxviii.) SeeAnAZ. The enlargement of the captives being obtained, the principal men of Samaria took care of them, gave them cloaths and food and other neceffary affiftances. After which they furniffied them with horfes, becaufe the greateft part of them were fo tired and exhaufted that they were not able to walk. Thus they conduced them to Jericho, which was in the confines of the land of Ju¬ dah. This is all that is come to our knowledge con¬ cerning the prophet Oded. ODENSEE, the capital of the ifle of Funen, a place of fuch high antiquity, that fome Danilh writers derive its foundation and name from Oden, the god and hero of the Gothic nations. “ Its- name certainly occurs (fays Mr Coxe) in the earlieft ages of the Danifh hiftory ; and it was a town of great note long before Copenhagen exifted. Odenfee ftands upon a fmall river, not navigable, and about tw?o miles from the bay of Stegeftrand. Many of the houfes are ancient, bearing dates about the middle of the 3 6th century ; but part is newly built : it con¬ tains about 5-2CO inhabitants, who carry on fome com¬ merce, exporting chiefly grain and leather; the lat¬ ter is much efteemed, and its goodnefs is fuppofed to arife from a. certain prop; y in the river water, in which it is foaked for tanning. The Danilh cavalry are fupplied from thence with the- greateft part of their leathern accoutrements. “ Odenfee is the feat of a bifliop, which was founded by H-arald Blaatand in 98c, and is the richeft in Den¬ mark next to Copenhagen. It has afehool, endowed by the celebrated Margaret of Valdemar, in which a certain number of fcholars, from fix to 16 years of age, are inftrudled gratis : they live and board in the town, and each receives a yearly penfion ; other fcho- larlhips have been alfo founded by private perfons. The whole number amounted to 70. There is alfo a gymnafium, inilituted by Chriftian IV. for the ad- miffion of ftudents at the age of 16. This, feminary was. Ode i! OdeiilrC. OJiii. odi r >84 i Oderntus was ft 111 further improved by the liberality of Heiberg the dialed of the the Danifh hiftorian, who proteded letters with the fame zeal with which he cultivated them. It is now greatly fallen from its former flourifhing Hate, con¬ taining, when I paffed through the town, only eight ftudents. The cathedral is a large old brick building, which has nothing remarkable except fome coftiy mo¬ numents of a private Danifh fam ly. The church, which formerly belonged to the convent of Reeulets, contains the fepulehre of John king of Denmark, and of his fon Chriftian II.” E. Long. 10. 27. N. Lat. 55. 28. ODENATUS, a celebrated prince of Palmyra. He very early inured himfelf to bear fatigues, artd by hunting leopards and wild beads, accuftomed himfelf to the labours of a military life. He was a faithful friend to the Romans ; and when Aure- lian had been taken prifoner by Sapor king of Per- fia, Odenatus warmly interefted himfelf in his caufe4 and folirited his releafe, by writing to the conqueror, and by fending him prefents. The king of Perfia was offended at this liberty of Odenatus, be tore the letter, and ordered the prefents that were offered to be thrown into a river; and in order to punifh Odenatus, who had the impudence, as he called it, to pay homage to fo great a monarch as himfelf, he commanded him to appear before him, on pain of being devoted to inftant deftruftion with all his family, if he dared to refufe. Odenatus defpifed this haughty fummors of .Sapor, and oppofed force by force. Pie obtained fome conflderable advantages over the troops of the Pei flan king and took his wife prifoner, with a great and rich booty. Thefe fervices were obferved with gratitude by the Romans; and Gallienus, the then emperor, named Odenatus as his colleague on the throne, and gave the title of Augujhis to his children and to his wife the celebrated Zenobia. Odenatua invefted with new power, refolved to fignalife himfelf more confpicuoufly by conquering the barbarians of the north : but bis exulting was oi fhort duration; he perifned by the dagger of one of his own relations, v'hom he had (lightly offended at a domeftic enter¬ tainment. He died at Emeffa about the 267th year of the Chriflian era. Zenobia i'ucceeded to his titles and honours. ODER, a river of Germany, which has its fource near a town of the fame name in Sileiia, and on the confines of Moravia. It runs north through that province, and then into the Marche of Brandenburg and Pomerania, where it »*-ms a large lake, afterwards falling into the Baltic Sea by three mouths ; between which lie the iflands Ufedom and Wolin. It paffes by feveral towns; as Ratibor, Oppelen, Bieflau, Glogan, and Croffen, in Sild'a ; Francfort, Lebus, and Cu- itrin, in Brandenburg ; and Gartz, Stetin, Cammin, Wallin, PTfedom, and Wolgafl, in Pomerania. ODEUM, in Grecian antiquity, a nvufic-theatre, built by Pericles ; the infide of which was filled with feats and ranges of pillars, and on the outfide the roof defeended (helving downwards from a point in the centre, with many bendings, in imitation of the king of Perfia’s pavilion. PIere the mufical prizes were con¬ tended for ; and here alfo, according to Ariftophanes, •was a tribunal. *Oc)lN (ice Frfa), in mythology, called alfo in N° 245. o D 1 Anglo-Saxons IVcdcn or JVodan, a Odin name given by the ancient Scythians to their fupreme —v— god, and affurned, about 70 years before the Chrill- ian era, by Sigge, a Scythian prince, who conquered the northern nations, made great changes in their go¬ vernment, manners,and religion enjoyed great honours, and had even divine honours paid him. According to the account given of this conqueror by Snorro, the ancient hi it or i an cf Norway, an 1 his commentator Torfaeus, Odin was a Scythian, who withdrew himfelf, with many others in his trairi, by flight, from the ven¬ geance of the Romans, under the con Juft of Pompeyj and having officiated a1 prielt in his own country, he affumed the direction of the religious worffiip, as well as the civil government, of the nations which he con¬ quered. Having fubdued Denmark Sweden, and Nor¬ way, he retired to Sweden, where he died. There ia nothing certain in this account ; hut it is probable, that the god, whofe prophet or prieit this Scythian pretend¬ ed to be, was named Odin, and that the ignorance of fucceeding ages confoun led the Deity with his prieff, compofing out of the attributes of the one, and the hi (lory of ttie other, the character of the northern conqueror. Fie deluded the people by his enchant¬ ments and (kill in magic : having cut oh the head of one Mimer, who in h'S lifetime was in great reputa¬ tion for wifdom, he caufed it to be embalmed, and perfuaded the Scandinavians that he had reftored it to the ufe ot fpeech ; and he caufed it to pronounce what¬ ever oracles he v anted. The Icelandic chronicles re- prefent Odin as the molt eloquent and perfuafive of men ; they aferibe to him the introduction of the art of poetry among the Scandinavians, and likewife the invention of the Runic charadters. Pic had alio the addrefs to pevfuade his followers, that ht could run over the world in the twinkling of an eye ; that he had the diredlion of the air and tempefts that he could transform himfelf into all forts of fhapes, could raife the dead, could foretel things to come, deprive his enemies, by enchantment, of health and vigour, and difeover all the treafures concealed in the earth. They add, that by his tender and melodious airs, he could make the plains and mountains open and expand with delight ; and that the gholls, thus at trailed, would leave their infernal caverns, and Hand motionlefs about him. Nor was he lefs dreadful and furious in battle ; changing himfelf into the (hape of a bear, a wild bull, or a lion, and amidft ranks of enemies committing the moll horrible devaftation, without receiving any wound himfelf. Dr Henry gives this account of him : “ Odin is be- lieved to have been the name of the one true God £il . 0 among the firlt colonies who came from the eat! and v peopled Germany and Scandinavia, and among their poilerity lor ieveral ages. But at length a mighty conqueror, the leader of anew army of adventurers from the eaft, over-run the north of Europe, ercdleJ a great empire, affutned the name of Odin, and claim¬ ed the honours which had been formerly paid to that deity. From thenceforward this deified mortal, un¬ der the name of Odin or IVodin, became the chief ob- jetl of the idolatrous worfhip of the Saxons and Danes in this ifland, as well as of many other nations. Ha. ving been a mighty and fuccefsful v/an ior, he was b lieved to be the god of war, who gave vidory, and revived o r> i C 185 1 o d y Oi'm revived courage in the confUft. Having civilized, in “Oclio tt^Gme meafure> countries which he conquered, and Atia. introduced arts formerly unknown, he was alfo wor- t—Y— fhipped as the god of arts and artifts. In a word, to this Odin his deluded worfhippers impioully aferibed all the attributes which belong only to the true God : to him they built magnificent temples, offered many facrifices, and confecrated the fourth day of the week, which is ft ill called by his name in England and in all the other countries where he wras formerly worlhip- ped. Notwithftanding all this, the founders of all the kingdoms of the Anglo-Saxon heptarchy pretended to be defeended from Wodin, and fome of them at the diftance only of a few generations.” Odin's Fire. We have this account of it in Gough’s Cambden. “In Evie parifti, in the Orkneys, near the fea, arc fome rocks, which frequently in the night appear on fire ; and the church of St Michael there was often feen full of lights, called fires fent by Odin to guard their tombs, but now ceafed. This may be a meteor, or fome inflammable matter on the cliffs, as at Char- mouth Dorfet.” OD1NUS, a celebrated hero of antiquity, who flourifhed about 70 years before the Chriftian era, in the northern parts of ancient Germany, or in the mo¬ dern kingdom of Denmark. He was at the fame time a prieft, a foldier, a poet, a monarch, and a viftor. He impofed upon the credulity of his fuperftitious countrymen, and made them believe that he could raile the dead, and that he was acquainted with futu¬ rity. When he had extended his pow’er, and increaftd his fame by conqueft and by artifice, he deter mined to die in a different way from other men. He afiembled 1 his friends, and with the (harp point of a lance he made in his body nine different wounds in the form of a circle; -and when expiring he declared that he was going to Scythia, where he ftrould become an immortal god. He added, that he would prepare blifs and felicity for thofe of his countrymen who lived a virtuous life, w! o fought with bravery, and who died like heroes in the field of battle. Thefe injun&ions had the wifhed-for effedl: his countrymen fuperilitioufly believed him, and conftantly recommended themfelves to his protec¬ tion when they engaged in battle ; and they entreated him to receive the fouls of fuch as fell in war. Be Odio et Alia. See Falfe Imprisonment. The writ de odio et atia was anciently ufed to be di- redled to the flieriff, commanding him to inquire whe¬ ther a prifoner charged with murder was committed •upon juft caufe of fufpicion, or merely propter odium et atiam, fur hatred and ill will ; and if upon the inqui- fition due caufe of fufpicion did not then appear, then there iffued another writ for the flier iff to admit him to bail. This writ, according to Bradlon, ought not to be denied to any man ; it being exprefsly ordered to be made out gratis, without any denial, by,magna charta, c. 26. and flatute Weftm. 2. 13 Edw. 1. c. 29; But the ftatute of Glocefttr, 6 Edw. 1. c. 9. reftrain- td it in the cafe of killing by mifadventure or felf-de- fence, and the ftatute 28 Edw. III. c. 9. abolifhed it in all cafes vvhatfoever: but as the flat. 42 Ed. III. c j. repealed all ftatntes then in being, contrary to the great charter, Sir Edward Coke is of opinion that the writ de odio et atia was thereby revived. See Habeas Corpus. Vol. XIII, Part I. ODO (St), fecond abbot of Clugni In France, was illuftrious for learning and piety in the xoth century. The fan ft icy of his life contributed greatly to enlafge the congregation of Clugni; and he was fo efteemed, that popes, bifhops, and fecular princes, ufually chofe him the arbiter of their difputes. He died about the year 942, and his works are printed in the Bibliotheq of Clugni. Odo Cantianus, fo called as being a native of Kent in England, was a Benediftine monk in the 12th een tury, in which order his learning and eloquence raifed him to the dignity of prior and abbot. Archbifhop Becket was his friend; and his panegyric was made by John of Salifbury. He compofed Commentaries on the Pentateuch, and the Second Book of Kings; Moral Refleftions on the Pfalms ; treatifes intitled, De cnere Philijlim ; Be moribus Ecclejiajlicis ; De vitiis et virtutibus Anima, &c. ODO ACER, according to Ennodius, was meanly born, and only a private man in the guards of the emperor Auguftulus, when (A. D. 476, under the con- fulfhip of Baiilicus and Armatus) the barbarians chofe him for their leader. The barbarians thought, as they often defended Italy, they had a rigS’t at leaft to part of it ; but upon demanding it they were refufed, and the confequence was a revolt. Odoacer is find to have been a man ?ff unccfmmon parts, capable alike of commanding an army or governing a ftate. Ha¬ ving left his own country when he was very young, to ferve in Italy, as he was of a ftature remarkably tall, he was admitted among the emperor’s guards, and continued in that ftation till the above year ; .when, putting "himfelf at the head of the barbarians in the Roman pay, who, though of different nations, hhd unanimoufly chofen him for their leader, he march¬ ed againft Oreftes, and his fon Auguftulus, who ftill refufed to fttare any of the lands in Italy. The Romans were inferior both in numbers and valour, and were eaftly conqueied : Oreftes was ordered to be fiain ; but the emperor Auguftulus was fpared, and, though ftripped of his dignity, was treated with hu¬ manity, and allowed a liberal firm for his own fup- port and for that of his relations. Odoacer was pro¬ claimed king of Italy; but affumed neither the purple nor any other mark of imperial confequence. He was afterwards defeated and fiain by Theodoric the Oftrogoth. See Ostrogoth. ODONTaLGIA, the toothach. See Medi¬ cine, n° 210 and 411. ODONTOIDE, in anatomy, an appellation given to the procefs of the fecond vertebra of the neck, from its refemblance to a tooth. ODOROUS, or Odoriferous, appellations given to whatever fmells Itrorigly, whether they he fetid or agreeable ; but chiefly to things whofe fmell is brifk and pleafant. ODYSoEY, the name of an epic poem compofed by Homer, which, when compared with the Iliad, exhibits its author as the fetting fun, whofe gran¬ deur remains without the heat of his meridian beams. The poet’s defign in the Odyffey was to paint the miferies of a kingdom in the abfcnce of its fupreme governor, and the evil confequences refulting from a difregard of law, and of that lubordination without which fociety cannot exift. With this view he fets A a before Ode Odyfleys. O E D [ 186 ] O E G before Ins countrymen the adventures of a prince who had been obliged to foifake hia native country, and to head*an ar - y of his. fuhjcfts in a foreign expedi¬ tion ; and he artfully contrives,- without interrupting the narrati to make the reader acquainted with the {late of the country in the abfence of its foverei^n. The chief h ng glorieufly finifiled the enterprife in which he was engaged, was’returning with his army; but in fpite of 'ill his eagernefs to be at home, lie was detained on the way by tempefts for ftveral years, and caft upon feveral countries differing from each ntfs and cold, yielding little rcfiflance, retaining the print of the finger when preffed with it, and accompa¬ nied with little or no pain. This tumour obtains no certain fituation in any par¬ ticular part of the body, fince the head, eye-lids, hand0, and fometimes part, fometimes the whole body, is afflicted with it. When the laft mentioned is the cafe, the patient is fiiid to he troubled with a cachexy, leucophlegmatia, or dropfy. But ir any particular part is more fubjedt to this difordcr than another, it is certainly the feet, which are at that time called Oedcr* O-gwa, other in mstnr eis and in government gers his companions, not itricily oh periflt through their the grandees of Ids oBeying his orders,' own fault. In the mean time ils country abufe the freedom which bfence gave them ; confume his eftate ; confpire In thefe dan- Jewelled or adematous feet. to de'lroy his fon ; endeavour to compel his queen to accept one of them for her hufband ; and indulge themf hes in every fpecies of violence, from a per- fuafion that he would never return. In this they were difappointed. He returns ; and difeovering himfelf only to his fon and feme others who had maintained who was ordered to put him to death, their allegiance, he is an eye-witnefs of the infolence prevent the misfortunes with which he vv: of his enemies, puniflies them according to their de- ferts, and reftorts to his iflaud that tranquillity and repofe to which it had been a ftranger during the many years of his abfence. 1 Such is the fable of the Odyffey, in which there is no opportunity of difplaying that vigour and fnb- lindty which charadterife the Iliad. “ It defeends OEDERA, in botany r A genus of the polyparnia fegregata order, belonging to the fyngenelia clais of plants. The cilyces are multiflorous ; tlie corollets- tubular, hermaphrodite, and one or two feminine ones ligulate; the receptacle is chaffy ; the pappus with nu¬ merous chaff. OEDIPUS, the unfortunate king of Thebes, whofe hiftory is partly labulous, fioiujilhed about 1266 B. C. It is laid he was given by his father to a ffiepherd, in order to was threatened by on oracle. But the fliepherd, being unwilling to kill him with his own hands, tied him by the feet to a tree, that he might he devoured by wild beads. The infant was however found in this fituation by another fnepherd named Phorbas, who carried him to Polybus king of Corinth ; where the queen, having no children, educated him with as much care as if he 4 Blair's IteSiurei. from the dignity of gods and heroes f, and warlike had been her own fon. When he was grown up, he wars informed that he was not the fon of Polybus : ou which, by order of the oracle, he went to feek for his father in Phocis ; but fearce was he arrived in that country, when he met his father on the road, and killed him without knowing him. A ffiort time after, having delivered the country from the monller called atchievements; but in recorrpence we have more piea- fing pi&ures of ancient manners. Inftead of that fe¬ rocity which reigns in the other poem, this prefents us with the mo ft amiable images of hofpitality and hu¬ manity ; entertains us with many a wonderful adven¬ ture ; and inltru&s us by fuch a conftant vein of mo¬ rality and virtue which runs through the poem,” the sphinx, he married Jocafta, without knowing that fometimes in precepts, and always in the eonduft of Ihe was his mother, and had four children by her; but the heto, that we ftiould not wonder if Greece, which afterwards, being informed of his inceft, he'quitted the gave the appellation of ’wife to men who uttered (ingle throne, and, thinking himfelf unworthy of the light, put out his eyes. Eteocles and Polynices, who were celebrated amongft the Greeks, were born of this in- ceftuous marriage. OEGWA, a town on the gold coaft of Africa, fentenqes of truth, had given to Homer the title of the father of virtue, for introducing into his work fuch a number of moral maxims. As a poem, however, the Odyffey has its faults. The laft twelve books are tedious and languid ; and we are difappointed by ihe calm behaviour of Penelope upon the difeovery of her long loft hufband. OECONOMICS, the art of managing the affairs Handing, according to Artus, on the brow of an eminence, raifing itfelf by a gentle afeent to a confi- derable height, and defended by rocks, againft which the waves beat with the utmoit violence, the noife of of a family or community; and hence the perfon who which is heard at a great diftance. Barbot affirms, that Oegwa contains above too honfes, disjoined by narrow crooked ftreets; and that from the fea it has the appearance of an amphitheatre. Des Marchais reduces the number of houfes to 200, in the centre of which Hands a large fquare building. takes care of the re venues and other affairs of churches, xnonafteries, and the like, is termed mconomus. OECONOhlY, denotes the prudent conduct, ordif- creet and frugal management; whether of a man's own eftate or that of another. minimal Osconomy, comprehends the various ope- the repofitory of their gold-duft and other commo- rations of nature in the generation, nutrition, and pre- dities. The houfes are built of earth and clay, but + See G hole fome air, and a fertile foil, with rifing head, though not lick, or in the kail difordered in hills, and feveral eaftles. It has no town of any great his ftomach. 'i he other eight, being bled and vo- IJOte< * mited immediately, were foon well. OENANTHE, water dropwob t : A genus of rl his vegetable is fo extremely like celery, and there- the digynia order, belonging to the pentandria clafs fore, as in the above caie, lo apt to be miftaken for it, of plants;-and in the natural method ranking under that it cannot be enough guarded againft by all who have t he 4vth order, Urriellata. The florets are ditform ; a proper regard for themfelves. In the plate (fee Plate thofe of the dife feffile and barren; the fruit crowned CCCXLVll.), X is the fhape of the root, a, 1 he with the calvx. There are live fpecies ; of which part cut oft from the ftalk. b, A branch taken from the moft remarkable is the crocata, or hemlock drop^ the bottom of the llalk, where the leaves are largefl. r, wort, growing frequently on the banks of ditches, ri- A top branch with the umbels of flowers, d. An vers, and lakes, in many parts of Britain. The root anterior view of the flower in its natural iize. e, A and leaves of this plant are a llrong poifon ; feveral pofteiior view of the fame, f, I he anterior appear* perfons have periftied by eating it through miftake, ance of the flower through a microicope. 1 he cither for water-parfnips or for celery, which lafl it pofterior view of the fame. A view of the rudi- refembles pretty much in its leaves. So exceedingly means of the fruit after the decay of the flower. /, deleterious is this plant, that Mr Lightfoot tells us ’I he fame magnified A ^ I he ihape of a leaf of re- he has heard the late Mr Chriflopher d’Eh ret, tire ^ry- B, A leaf of parfley. Thefe two are printed, celebrated botanic painter, fay, that while he was to prevent any unhappy miftake in eating the poifonous drawing it, the fmell or effluvia only rendered him fo plant inftead of either. We have added to the figures giddy, that he was feveral times obliged to quit the of this dangerous plant thefe leaves of celery and par- room, and walk out In the frefli air to recover himfdf; fley, which, as we have faid, it greatly refembles, in but recoiledling at laft what might be the probable order to (how our readers how careful they ought to caufe of his repeated illnefs, he opened the door and be in cafe of an accident becaufe of this fimilarity. windows of the room, and the free air then enabled OENKJE, in botany, a fpecies of iris. See Ik is. ^ him to finifh his work without anymore returns of OENOPIaE, in Grecian antiquity, a kind o£ the giddinefs. Mr Lightfoot informs us, that he cenfors at Athens, who regulated entertainments, has given a fpoonful of the juice of this plant to a and took care that none drank too much, nor too dog, but without any other efferil than that of making litt’e. him very flek and ftupid. In about an hour he re- OENOS, in ornithology, the name ufed by authors covered ; and our author has feen a goat eat it with for the flock dove, or wood-pigeon, called alfo by impunity. To fuch of the human fpecies as have un- fome vinago, fomewhat larger than the common pigeon, fortunately eat any part of this plant> a vomit is the but of the fame fhape and general colour. Its neck moft approved remedy. is of a fine changeable hue, as differently oppafed to Lobel calls this vegetable ananthe aquatica cicuta fa- the light; and its breaft, fhoulders, and wings, are of 7 A a 2 a O E N [ 1S8 Oeno^Vicr^. a fine purplifh hue, or red wine colour, from whence —r—1 it has its name imago. Its legs are red, and feathered a little below the joint. OENOTHERA, tree-primrose: A genus of the monogynia order, belonging to the oftandria clafs of plants ; and in the natural method ranking under the 17th order, Calycanthema. The calyx is quadri- ’ fid ; the petals four ; the capfule cylindric beneath ; the feeds naked. There are feven fpecies ; the moll remarkable of which are, 1. The biennis, or common biennial tree-primrofe. It hajh a long, thick, deeply-ftriking root; crowned with many large, oval, fpear-fhaped, plane, fpreading leaves ; upright, thick, firm, rough, hairy ftems, rifing three or four feet high ; garnifhed with long, narrow, lanceolate, clofe-fitting leaves, irregularly ; and at all the axillas, from the middle upwards, large bright- yellow flowers. 2. Oclovalvis, or o&ovalved, frnooth, biennial tree- primrofe, hath upright, firm, fomcwhat hairy ftems, rifing a yard high; oblong, fpear ihaped, pointed, plane, fmooth leaves; and at the axillas large bright- yellow flowers. 3. The fruticofa, or fhrubby, narrow-leaved, peren¬ nial tree primrofe, hath long thick roots; upright under-lhrubby like red ftems, two or three feet high ; fpear-fhaped,* lightly-indented leaves ; and at the axil¬ las pedunculated clufters of yellow flowers, fucceeded by pedicellated, acute-angled capfules. 4. The pumila, 01 low perennial tree-primrofe, hath fibrous roots, crowned with many oval, fpear-fhaped, elofe-fitting leaves; flender herbaceous ftems from 10 to 12 inches long; garnifhed with fpear-fhaped, blunt, fmooth leaves, having very fhort f6ot-ftalks ; and at the axillas fmallifh bright yellow flowers, fucceeded by a- cute-angled capfules. All thefe plants flower very profufely in June and July, coming out almoft half the length of the ftalks from the axillas ; and as the ftalk advances in ftature new flowers are produced, fucceeding thofe below ; in which order the plants continue flowering from about midfummer till Oftober : each flower is moderately large and confpicuous, confifting of four plane petals, which with the calyx forms a very long tube below, •and fpreading above, generally expand moft towards the evening; and are fucceeded by plenty of feed in autumn for propagation. Thefe plants are exotics from America ; but are all very hardy, profper in any common foil and fituation, and hava- been long in the Eqglifh gardens, efpecially the three firft forts; but the oenothera biennis is the moft commonly knowm The firft and fecond fpecies are biennial, and the third and fourth are perennial in root. They are proper to be employed as plants of orna¬ ment for embellififing the pleafure-garden ; they may be placed anywhere, and will effedl a very agreeable variety three or four months with their plentiful blow of flowers. The biennial kinds muft be raifed annually from feed, for they totally perifli after they have flowered. Tut the perennials, once raifed, continue for years by the root. The propagation of all the forts is by feed, and the perennial alfo by parting the roots. 8 Oeltruifc ] O E S OENOTRIA, an ancient name of Italy ; fo called Oenotrla from the Oenotri, (Virgil); inhabiting between Pse* ftum and Tarencum, (Ovid). Originally Arcadians, (Dionyfius Halicarnaffbeus), who came under the con- ' dud of Oenotrus fon of Lycaon, 17 generations be¬ fore the war of Troy, or 459 years, at 27 years each generation, and gave name to the people. Cato de¬ rives the name from Oenotrus, king of the Sabines and Etrufcans; but Varro from Oenotrus, king of the JLa- tins; and Servius from the Greek name for wine, for which Italy was famous ; of which opinion is Strabo. OENOTRIDES j Strabo, Pliny), two fmall ifiands in the Tufcan fea, over-againft Velia, a town of Lu- called Pontia and Ifcia ; now Penza and Ifcbta, on the coaft of the Principato Citra, or to the well of Naples. So called from the Oenotri, an ancient people of Italy. OESEL, an ifland of the Baltic fea, at the en¬ trance of the gulf of Livonia. It is about 70 miles in length, and in breadth, and contains loparifhes. It is defended by the fortrefles of Airenftmrg and Sonneburg. It lies between 220 and 24° of call longi-f tude, and between 58° and 590 of north latitude. OESOPHAGUS, in anatomy, the Gula, or Gi//- let, is a membranaceous canal, reaching from the fau¬ ces to the ftomach, and conveying into it the food ta¬ ken in at the mouth. See Anatomy, n° 92. OESTRUS, in zoology, a genus of infeds be- piatc longing to the order of diptera. It has no mouth ; CCCI*. but three pundures, without trunk or beak : Antenna: taper, proceeding from a lenticular joint. There are five fpecies. 1. Bovis, the breeze or gad-Jly.—Thorax yellow, with a black tranfverfe line between the wings: Ab- dopien tawny, with fine black tranfverfe lines; lafti fegment black : Wings white, with a brown tranf¬ verfe line, and three brown fpots. Size of the large blue fly. Depofits its eggs under the Ik in on the- backs of oxen, where the maggots are nourifhed the whole winter till the month of June ; and plague the cattle fo all the fummer, that they are obliged to fly for refuge into the water, and dare not quit it the whole day. » 2. The hamorrhoidalis.—Body long, black, covered with tawny hair; middle of the thorax lefs hairy; wings immaculate ; antennae very fhort: Length half an inch. Depofits its eggs in the redum of horfes, and occafions great torment. See botts. 3. Ovis, the grey jly.—Spotted with black ^ front pale-yellow ; legs brownifli ; wings with fhort black • veins: length half an inch. Breeds in the frontal finus of fheep ; where the maggots, hatched from the eggs, lodge the whole winter, vellicating the internal membranes, and often bringing on death. 5. The nafalis.— Body black; .but the head, thorax, and abdomen, covered with pale-red hair, except the firft fegment of the latter, which is covered with white hair; the wings immaculate. Breeds in th« fauces of horfes, entering by their nofe. 5. The tarandi.—Thorax yellow ; with a black line between the wings, which are immaculate : Abdomerr tawny, laft fegment black. Infeft the back of the rein-deer, fo ,as greatly to retard the breed The rein-deer of Lapland are obliged every year to fly to the Alpine mountains, to efcape the purluit of th efe infedff _ Plate CCCXLMi c_ r////// ias/. r//&, •//, ''A'r/ / f. /Ay/.i/''" foi -yv^v A. Plate C C CL . O E T r 189 infe&s: yet a fourth part of their number, peril'll by them at two years old ; the reft are emaciated, .and have their Ikins fpoiled. It is one of the moft curious genera of infedls. They are diftinguifhed into feveral fpecies, by reafon of the different places wherein they depofit their eggs. Some, in drafted by nature that their eggs cannot be hatched but under the fkins of hying creatures, fuch as bulls, cows, rein-deer, flags, and camels, fix upon them at the inftant of lay¬ ing’ their eggs. From the hinder part of their body fflues a whiruble of wonderful ftrufture . It is a fcaly cylinder, conipofed of four tubes, which draw out like the pieces of a fpy ing-glafs ; the laft is arme d with three hooks, and is the gimblet with which the ceftu bore through the tough hides of horned cattle. Fhe animal feems to experience no pain from the punfture,^ unlefs the infeft, plunging too deep, attacks fome nervous fibre ; in which cafe, the beaft runs about, and becomes furioas. The eggs being hatched, the grub feeds on the matter of the wound. The place of its abode forms upon the body of the quadrupeds a bunch fometimes above an inch high. When full- grown, the larva breaks through the tumor, and Aides down to the ground ; for doing which it taxes the cool of the morning, that it may neither be over¬ powered by the heat of the day, nor chilled by the cold of the night: it then digs itfelf a burrow, into which it retires. Its ikin grows hard, and turns to. a very folid fhell. There it is transformed to a chryfalis, and afterwards to a winged infeft. Nature has pro¬ vided for every exigence : the (hell wherein the oeftrus is inclofed, is of fo ftrong a texture that it could not make its way out, if at one of the ends there were not a fmall valve, faftened only by a very flight filament. The firft pufh the oeftrus makes, the door gives way and the prifon opens. The infeft wings its way to woods and places frequented by cattle. OETA (anc. geog.), a mountain of Theffaly, ex¬ tending from Thermopylae weftward to the Sinus Ambracius, and in fome meafure cutting at right angles the mountainous country ftretching out be¬ tween Parnaffus to the fouth, and Pindus to the north. At Thermopylae it is very rough and high, rifing and ending in fharp and fteep rocks, affording a narrow paffage between it and the fea from Theffaly to Lo- cris (Strabo), with two paths over it; the one above Trachis, very fteep and high ; the other through the country of the fEnianes, much eafier and readier for travellers; by this it was that Leonidas was attacked in rear by the Periians (Paufanias). Here Hercules laid himfelf on the funeral pile (Silius Italicus, Ovid) ; the fpot thence called Pyra (Livy), who fays, that the extreme mountains to the eaft are called Oeta; and hence the poets allege, that day, night, fun, and ftars, arofe from Oeta (Seneca, Statius, Silius Italicus, Catullus, Virgil’S CWtfxJ—circumftances which fliow the height of this mountain. OETING, a town of Germany, in Upper Bavaria, tinder the jurifdiftion of Burkhaufen. It is divided into the upper and the lower town, and feated on the river Inn, eight miles weft of Burkhaufen. E. Long. 12. 47. N. Lat. 4$. o. There is a greatrefort of pil¬ grims to the old chapel. Geting, or Oetingen, a town of Germany, in the circle of Suabia, and capital of a county of the fame ] . 0 . F F name, feated on the river Wirnizt. E. Long. 10. 45. N. Lat. 48.52. . , . . f Oeting, a county of Germany, in the. circle.ot Suabia, bounded on the north and eaft by Franconia; on the fouth by the duchy of Neuburg; and on the weft by that of Wirtemberg. It is about 40 miles from eaft to weft, and 20 from north to fouth. OFFA’s-dyke, an entrenchment call up by Offa, Oeting II OfTrings. a Saxon king, to defend England againft the incur- fions of the Welch. It runs through Hertfordfhire, Shroplhire, Montgomeryfhire, Denbighfhire, and Flint- Ihire. OFFANTO, a river of Italy, in the kingdom of Naples. It rifes in the Apennine mountains, in the Farther Principato ; and palling by Conza, and Monte Verde, it afterwards feparates the Capitanata from the Bafilicata and the Terra-di Barri, and then it falls into the gulf of Venice, near Salpe. OFFENCE, in law, an aft committed againft the law, or omitted where the law requires, it. OFFERINGS. The Hebrews had feveral kinds of offerings, which they prefented at the temple. Some were free-will offerings, and others were of obligation. The firft-fruits, the tenths, the lin-offerings,’ were of obligation; the peace-offerings, vows, offerings or wine, oil, bread, falc, and other things, which were made to the temple or to the miniiters of the Lord, were offerings of devotion. The Hebrews called all offerings in general corban. But the offerings of bread, fait,fruits, and liquors, as wine and oil, which were pre¬ fented to- the temple, they called mincha. The facrifices are not properly offerings, and are not commonly in¬ cluded under that name. See Corbin and Sacrifice. The offerings of grain, meal, bread, cakes, fruits, wine, fait, and oil, were common in the temple. Some¬ times theie offerings were alone, and fometimes they accompanied the facrifices. Honey was never offered with the facrifices; but it might be offered alone in the quality of firft fruits. Now thefe were the rules that were obferved in the prefenting of thofe offerings, called in Hebrew mincha, or kerbon mincha ; in the Septuagint, offerings of facrifice; and the fame by St Jerom, oblationem facrificii; but by our tranf- lators, meat offerings (Lev., ii. 1. &c.) There were five forts of thefe offerings: 1. Fine flour or meal. 2. Cakes of feveral forts, baked in an oven. 3. Cakes baked upon a plate. 4. Another fort of cakes, baked upon a gridiron, or plate with holes in it. 5. The. firft fruits of the new corn, which were offered either pure and without mixture, or roaited or parched in the ear, or out of the ear. The cakes were kneaded with oil-olive, or fried with oil in a pan, or only dipped in oil after they were baked. The bread offered to be prefented upon the altar, was to be without leaven ; for leaven was never offered upon the altar, nor with the facriiices. But they might make prefents of common bread to the priefts and minifters of the temple. See Cake, &c. The offerings now mentioned were appointed on ac¬ count of the poorer fort,who could not.go to the charge of facrificing animals. And even thofe that offered living viftims were not excufed from giving meal, wine, and fait, which was to go along with the great¬ er facrifices. And* alfo thofe that offered only ob¬ lations of bread or of meal, offered alfo oil, incenfe* fait,. OFF [ 190 ] fait, ?.nd wine, which were in a manner the feafoning oi it. The prielt in waiting received the offerings from th e hand of him that offered them ; laid a part of them npon the altar, and referved the reff for his own fub- hifcnce : that was his right as a minifter of the Lord. Nothing was burnt quite up hut the ineenfe, of which the pried kept back nothing for his own (hare. When an Ifraelite offered a loaf to the pried, or a Vvlude cake, the prieft broke the loaf or the cake into two parts, fetting that part aficle that he referved to him fell , and broke the other into crumbs ; poured oil tipun it, fait, wine, and incenfe; and fpread the whole upon the lire of the altar. If thefe offerings were ac¬ companied by an animal for a faerifice, it was all thrown upon the vibfim, to be confunaed along with it. If thefe offerings were the ears of new corn, either of wheat or barley, thefe ears were parched at the fire or in the flame, and nibbed in the hand, and then of¬ fered to the prieft in a veffel; over which he put oil, incenfe, wine, and fait, and then burnt it upon the altar, firft having taken as much of it as of right be¬ longed to himfelf. The greateft part of thefe offerings were voluntary, and of pure devotion. But when an animal was of¬ fered-in facrifice, they were not at liberty to omit thefe offerings. Every thing was to be fupplied that was to accompany the facrifice, and which ferved as a feafoning to the victim. There are feme cafes in which thelaw requires only offerings of corn, or bread : for example, when they offered the firft-fruits of their harveft, whether they were offered folemnly by the whole nation, or by the devotion of private perfons. As to the quantity of meal, oil, wane, or fait, which was to go along with the facrifices, we cannot eafily fee that the law had determined it. Generally the prieft threw an handful of meal or crumbs upon the fire of the altar, with wine, oil, and fait in proportion, and all the incenfe. All the reft belonged to him, the Quantity depended upon the liberality of the offerer. We obferve in more places than one, that Mofes ap¬ points an Affaron, or the tenth part of an ephah of meal, for thofe that had not wherewithal to offer the appointed fin-offerings (Lev. v. 11. xiv. zt.) >n the folemn offerings of the firft fruits for the whole nation, they offered an entire Iheaf ol corn, a lamb of a year oldj two tenths or two affarons of fine meal mixed with oil, and a quarter of an hin ot wine for the libation (Lev. xxiii !o. iJ. 12, See.) In the facrifice of jealoufy (Numb. v. ty-)? when a jealous hufband accufed his wife of infidelity, the hufband offered the tenth part of a fatum of barley- meal, without oil or incenle, hecaufe it was a facrifice of jealoufy,to difeover whether his wiie was guilty or not. 1 he offerings of the fruits of the earth, of bread, of wine, oil, and fait, are the moft ancient of any that have come to our knowledge. Cain offered to the Lord of the fruits of the earth, the firlt-fruits of his labour (Gen. iv. 3. 4.) Abel offered the firftlings of his flocks, and of their fat. The heathen have no¬ thing more ancient in their,religion, than thefe forts of offerings made to their gods. They oftered clean wheat, flour, and bread. OFFICE, a particular charge or trnft, or a dignity attended with a public fun&ion. See Honour.— The word is primarily ufed in fpeaking of the offices Ofg of judicature and policy ; as the office of fecretary of ^1! ftate, the office of a fheriff, of a juilice of peace, &c. , l'c Office alfo fignifies a place or apartment appmm" ed for officers to attend in, in order to difeharqe their refpedlive duties and employments ; as the fecretary’s office, ordnance office, excife-office, figmet-office, pa¬ per-office, pipe-office, fix clerks office, &c. Pffice, in architedture, denotes all the apart¬ ments appointed for the. neceflary occafions of a pa¬ lace or great houfe ; as kitchen, pantries, confeftiona- ries, &c. Office, in the canon-law, is ufed for a benefice that has no jurifdiftion annexed to it. Duty upon Offices and P&ifions, a branch of the king’s extraordinary perpetual revenue, confifting in a payment of 1 s. in the pound (over and above all other duties) out of all falaries, fees, and perquilites, of offices and penfions payable by the crown. Tin's highly-popular taxation was impofed by ftert-d1 Geo.lL c. 22. and is under the diredtion of the commiffiontrs of the land-tax. OFFICER, a perfon pofftffed of a poft or office. See the pi f eeding article. The great officers of the crown, or Rate, are, The lord high-lleward, the lord high-chancellor, the lord high-treafurer, the lord-prefident of the council, the lord privy-feal, the lord-chamberlain, the lord high- conftabie, and the earl-marfhal; each of which fee under its proper article. Non ■ commiffloned Officers, are ferjeant-majors, quar¬ ter-raafter ferjeants, ferjeants, corporals, drum and fife majors ; who are nominated by their refpe&ive cap¬ tains, and appointed by the commanding officers of regiments, and by them reduced without a court- martial. . . , -.> ,, Orderly non-commiffloned Officers, are thofe who are orderly, or on duty for that week ; who, on hearing the drum beat for orders, are to repair to the place appointed to receive them, and to take down in wri¬ ting, in the orderly book, what is diflated by the ad¬ jutant, or ferjeant major : they are then immediately to fliow thefe orders to the officers of the company, and afterwards warn the men for duty. N/ag Officers. See Flag Officers, and Admirals. Commijfwn Officers, are fuch as are appointed by the king s commiffion. Such are all from the general to the cornet and enfign inclufive. They are thus called in contradiftin&ion to non-commiffioned officers. See Non-CjOmmiffioned Officers. General Officers, are thofe vvhofe command is not limited to a Tingle company, tryop, or regiment ; but extends to a body of forces compofed of feveral regi¬ ments: fuch are the general, lieutenant-general, major- general, and brigadier. Officers cf the Houfehold. See the article Hoyst- HOLD. * StaffiOfficers, are fuch as, in the king’s prefence, bear a white llaff or wand ; and at other times, on their going abroad, have it carried before them by a footman bare-headed : fuch are the lord-fteward, lord- chamberlain, lord treafurer, &c. The white ftaff is taken for a commiffion ; and, at the king’s death, each of thefe officers breaks his llaft ovt'r the^hearfe made for the king’s body, and by this * means O G I r 191 ] O G Y 0 Peer 5 II U'illn'. means lays down his commiHion, and difeharges all his inferior officers. Subaltern Officers^ are all who adminifter juftice in the name of fubjedfs; as thofe who zA under the earl rnarfhal, admiral, &c. In the army, the fufealtern officers are the lieutenants, cornets, enfigns, ferjeants, and corporals. OFFICIAL, in the canon law, an ecdefiaftical judg^, appointed, by a bifhop, chapter, abbot, &c. with charge of the fpiritual jurifdidfion of the dio- Official, Is nlfo a deputy appointed by an arch* deacon as his affiftant, who fits as iudoe in the arch- deacon’s coiirt. ‘ OFFICINAL, in pharmaev, an appellation given to fuch medicines, whether fimple or compound, as arc required to be conflactly kept in the apothecaries (hops. The officinal Jtmples are appointed, among us, by the college of phylicians ; and the manner of ma¬ lting the compofitions diredfed in their difpenfatory. See Pharmacy. OFFING, or Gffin, in the fea language, that part of the fea a good diftance from ffiore, where there is deep water, and no need of a pilot to conduft the flip : thus, if a flip from fhore be feen failing out to feaward, they fay, Jhe Jlatuls for the offing; and if a flip, having the fliore near her, have another a good way without her, or towards the fea, they fay, that (hip i.f in the offing. OFF-SETS, in gardening, are the young fhoots that foring from the roots of plants; which being carefully feparated, and planted in a proper foil, ferve to propagate the fpecies. Off-sets, in furveying, are perpendiculars let fall, and meafuring from the ftationary lines to the hedge, fence, or extremity of an inelofure. OGEE, or O. G. in archite&ure, a moulding con- lifting of two members, the one concave and the other convex ; or of a round and hollow, like an S- See Architecture. OGH AMS, a particular kind of fteganography, or writing in cypher pradfife 1 by the Irifii ; of which there were three kinds: The firft was compofed of certain lines and marks, which derived their power from their filiation and pofition, as they ftand in re¬ lation to one principal line, over or under which they are placed, or through which they are draw-n ; the principal line is horizontal, and ferveth for a rule or guide, whofe upper part is called the left, and the un¬ der fide the right ; above, under, and through which line, the ch a rafters or marks are drawn, which (land in the place of vowels, confonants, diphthongs, and triphthongs. Some authors have doubted the exilt- ence of this fpecies of writing in cypher, called Ogham among the Irifi; but thefe doubts are perhaps ill-found¬ ed; for feveral MSS. in this charafter fill exilf, from which Mr Aftle has given a plate of them. OGILBY (John), an eminent writer, was born in or near Edinburgh, about the 17 th of November i6co. His father having fpent his eftate, and being prifoner in the King’s Bench for debt, could contribute but little to his education; however, he obtained fome knowledge in the Latin grammar, and afterwards fo much money as to procute his father’s difeharge from prifon, and to bind himfelf an apprentice to a dancing- mafter in London ; when, by his dexterity in his pro- feffion, an 1 his eomplaifaut behaviour to bis matter’s fcholars, he obtained money to buy out the remainder of his time, and to fet up for himfelf. But being af¬ terwards appointed to dance in the duke of Bucking¬ ham’s great made, he by a falfe ftep drained a vein in tiie: infide of his leg, which occafoned his being ever after fomewhat lame. When Thomas earl of Strafford was made lord lieutenant of Ireland, he was entertain¬ ed as a daneing-mafter in his family, and made one of the earl’s troop of guards ; at which time he compo¬ fed a hunao'rous piece called the CharaBer of a Tmo tier. He was foon aftsr appointed mailer of the revels in Ireland, and built a theatre at Dublin. About the time of the Conclulion of the war in England, he,left Ireland, and, being ffiipwtecked, came to London in a neceffitous condition ; but foon after walked to Cam¬ bridge, where, being affi led by feveral fcholars, he be¬ came fo complete a mailer of the Latin tongue, that in 1649 publilhed a trunfl ition of Virgil. ~ He foon after learned Greek; and in 1660 publilhed, in folio, a tranfl ition of Homer’s Iliad, with Annotations. A- bout two years after he went into Ireland, where he was made mailer of the revels by patent- He then built another theatre in Dublin, which coll him about loco 1. He publilhed at London, in folio, a tranflation of Llomer’s Odyffey, with Annotations ; and after¬ wards wrote two heroic poems, intitled the Ebhefian Matron, and the Roman Slave. He next compoftil the Carolics, an epic poem, in 12 books, in honour of king Charles I. but this was entirely loll in the fire of London; when Mr Ogilby’s houfe in White Friars was burnt down, and his whole fortune, except to the value of five pounds, dellroyed. He, however, foon procured his houfe to be rebuilt, fet up a printing- office within it, was appointed his majelty’s cofmo- grapher and geographic printer, and printed feveral great works, tranfiated or collefted by himfelf and his affitlants, particularly his Atlas. He died in 1676. OGIVE, in architefture, an arch <« branch of a Gothic vault; which, milead of being circular, paffes diagonally from one angle to another, and forms a crofs with the other arches. The middle, where the ogives crofs each other, is called the key; being cut in form of a tofe, or a cul de lamps. The members or mouldings of the ogives are called nerves, branches, or reins; and the arches which feparate the ogives, double arches. OGYGES, king of the Thebans, or, according to others, of Ogygia and Aftse, afterwards called Bceotia and Attica. He is recorded to have been the firlt founder of Thebes and Eleufin. The famous deluge happened in his time, in which fome fay he perilhed with all his fubjefts, 1796 B. C. OGYGIA (Homer), the ifiand of Calypfo ; placed by Pliny in the Sinus Scylaceus, in the Ionian Sea, oppolite to the promontory Lacinium; by Mela in the flrait of Sicily, calling it AAee; which others place at the promontory Circeiuna, and call it the illand of Circe Ogygia, the ancient name of Thebes in Boeotia ; fo called from Ogyges, an ancient king, under whom happened OIL t k liappened a great deluge, 1020 years before the firft , 'J. Olympiad. _ ■ OHIO, a river of North America, called by the French the Beautiful River, has its fource between the Allegany mountains and the lake Erie ; and running fouth-weft through a mod delightful country, and alfo receiving many fmaller rivers in its paffage, at length falls into the Miffiffippi, in about 37 degrees of lati¬ tude. The French had feveral forts on and near it; but the whole country through which it flows was ceded by the peace of 1763 to the Britifli. O HETEROA, one of the South Sea iflands late¬ ly difcovered, is fituated in W. Long. 150. 47. S. Lat. 22. 27. It is neither fertile nor populous ; nor has it an harbour or anchorage fit for (hipping, and the difpofition of the people is hoftile to fuch as vifit them. OIL, in natural hiftory, an un&uous inflammable fufeltance, drawn from feveral natural bodies, as animal and vegetable fubftances. Animal oils are their fats, which are originally ve^ getable oils : all animal fubftances yield them, toge¬ ther with their volatile falts, in diftillation. Vegetable oils are obtained by expreffion, infufion, and diftillation. The oils by expreflion are obtained from the feed, leaves, fruit, and bark of plants; thus, the feed of mu {lard, and of the fun-flower, almonds, nuts, beech- maft, See. a(Ford a copious oil by expreffion ; and the leaves of rofemary, mint, rue, wormwood, thyme, fage, &c. the berries of juniper, olives, Indian cloves, nutmeg, mace, &c. the barks of cinnamon, faffafras, and clove, yield a confiderable proportion of effential oil by diftillation. The method of procuring oils by expreffion is very Ample: thus, if either fweet or bitter almonds, that are frefh, be pounded in a mortar, the oil may be forced out with a prefs, not heated : and in the fame manner (hould the oil be prefled from linfeed and muftard. The avoiding the ufe of heat, in preparing thefe oils in¬ tended for internal medicinal ufe, is of great import¬ ance, as her4 gives them a very prejudicial rancid- nefs. This method holds of all thofe vegetable matters that contain a copious oil, in a loofe manner, or in cer¬ tain cavities or receptacles; the fides whereof being broken, or fqueezed, makes them let go the oil they contain : and thus the zeft or oil of lemon-peel,, orange- peel, citron-peel, &c. may be readily obtained by preflure, without the ufe of fire. But how far this me¬ thod of obtaining oils may be applied to advantage, feems not hitherto confidered. It has been common¬ ly applied to olives, almonds, linfeed, rape-feed, beech- maft, ben-nuts, walnuts, bay-berries, mace, nutmeg, &c. but not, that we know of, to juniper-berries, ca- (hew-nuts, Indian cloves, pine-apples, and many other fubftanccs that might be enumerated, both of foreign and domeftic growth. It has, however, been of late fuccefsfully applied to muftard-feed, fo as to extraft a curious gold-coloured oil, leaving a cake behind, fit for making the common table-muftard. Certain dry matters, as well as moift ones, may be made to afford oils by expreffion, by grinding them into a meal, which being fufpended to receive the va- N° 245. ,2 1- OIL pour of boiling water, will thus be rcoiftened fo as to 0 afford an oil in the fame manner as almonds; and thus an oil may be procured from linfeed, hemp-feed, let¬ tuce-feed, white-poppy feed, See. As to the treatment of oils obtained by expTeffion, they (hould be fuffered to depurate themfelves by (land¬ ing in a moderately cool place, to feparate from their water, and depofit their fasces ; from both which they ought to be carefully freed. And if they are not thus , rendered fufficiently pure, they may be waffied well with frefh water, then thoroughly feparated from it again by the feparating-glafs, whereby they will be rendered bright and clear. The next clafs of oils are thofe made by infufion, of decodlion, wherein the virtues of fome herb or flower are drawn out in the oil; as the oils of rofes, chamo¬ mile, hypericum, alder, Sec. However, thefe require to be dilfeiently treated: thus, for the feented flowers, particularly rofes, infolation does bed ; becaufe much boiling would exhale their more fragrant parts : but oils impregnated with green herbs, as thofe of chamo¬ mile and alder, require long boiling, before they re¬ ceive the green colour defired. And, in general, no oils will .bear to be boiled any longer than there remains fome aqueous humidity, without turning black. There are many compound oils prepared in the fame manner, viz. by boiling and mfolation, and then drain¬ ing off the-oil for ufe. The fame contrivance has likewife its life in making effences for the fervice of the perfumer ; not only where effential oils cannot be well obtained in fufficient quan¬ tities, but alfo where they are too dear. The effential oil of jeffamine flowers, honey-fuckles, fweet-briar, damalk-rofes, lilies of the valley, &c. are either, ex¬ tremely dear, or fcarcely obtainable by diftillation; and, in fome of them, the odorous matter is fo fub- tile, as almoft to be loft in the operation. But if thefe flowers be barely infufed in fine oil of nuts, or oil of ben, drawn without heat, and kept in a cool place, their fubtile odorous matter will thus pafs into the oil, and richly impregnate it with their flavour. And thefe effences may be rendered dill more perfect by draining off the oil at firft put on, and letting it (land again, without heat, upon freffi flowers ; repeating the ope¬ ration twice or thrice. Oils or fats may likewife be obtained, by boiling and expreffion, from certam artimal-fubftances; for the membranes which contain the fat, being chopped fmall, and fet in a pan over the fire, become fit for the canvas bag, and, by preffure, afford a large quantity of fat ; as we fee in the art of chandlery, which thus extra&ing the oily matter, leaves a cake-behnid, com¬ monly called graves. As to the effential oils of vegetables, they are ob¬ tained by diftillation with an alembic and a large re¬ frigeratory. Water mud be added to the materials, in fufficient quantity, to prevent their burning ; and they (hould be macerated or digefttd in that water, a little time before diftillation. The oil comes over with the water; and either fwims on tne top, or finks to the bottom, according as it is fpecifically heavier or lighter than water. This procefs is applicable to the diftilling of the ef¬ fential oils from flowers, leaves, barks, roots, woods, gums, OIL L 103 1 OLD gums, and balfams, with a flight alteration of circum- ftances, as by longer digeition, brifker diftillation, &c. according to the tenacity and hardnefs of the fubjedt, the ponderofity of the oil, &c. Eflential oils may be divided into two clafles, ac¬ cording to their different fpecific gravities ; fome float- ing upon water, and others readily finking to the bot¬ tom. Thus, the eflential oils of cloves, cinnamon, and faflafras, readily fink, whereas thofe of lavender, mar¬ joram, mint, &<;. fwim, in water : the lighteft of thefe eflential oils is, perhaps, that of citron-peel, which even floats in fpirit of wine ; and the heavieft ieems to be oil of faflafras. For obtaining the full quantity of the more ponder¬ ous oils from cinnamon, cloves, faflafras, &c. it is proper to reduce the fubje&s to powder; todigeftthis powder for fome days in a warm place, with thrice its quantity of foft river-water, made very faline by the addition of fea-falt, or fharp with oil of vitriol; to ufe the (trained decodtion, or liquor left behind in the ftill, inftead of common water, for frefli digeflion ; to ufe for the fame purpofe the water of the fecond running, after being cleared of its oil; not to dittil too large a quantity of thefe fubiedts at once ; to leave a confide- rable part of the ftill, or about one fourth, empty ; to ufe a brilk fire, or a ftrong boiling heat, at the firft, but to flacken it afterwards; to have a low ftill-head, with a proper internal ledge and current leading to the nofe of the worm ; and, finally, to cohobate the wa¬ ter, or pour back the liquor of the fecond running upon the matter in the ftill, repeating this once or twice. The directions here laid down for obtaining the pon¬ derous oils to advantage, are eafily transferred to the obtaining of the lighter ; fo that we need not dwell particularly upon them. Many of the eflential oils being dear, it is a ve¬ ry common praftice to adulterate or debafe them fe- veral ways, fo as to render them cheaper both to the feller and the buyer. Thefe feveral ways feem redu¬ cible to three general kinds, each of which has its proper method of dete&ion, viz. I. With exprefled oils. 2. With alcohol. And, 3. With cheaper eflen- tial oils. If an eflential oil be adulterated with an exprefled oil, it is eafy to difeover the fraud ; by adding a little fpirit of wine to a few drops of the fufpefted eflential oil, and fliaking them together; for the fpirit v/ill diflblve all the oil that is eflential, or procured by di¬ ftillation, and leave all the expreffed oil that was mix¬ ed with it, untouched. If an eflential oil be adulterated with alcohol, or rectified fpirit of wine, it may be done in any propor¬ tion, up to that of an equal quantity, without being eafily difcoverable either by the fmell or tafte: the way to difeover this fraud, is to put a few drops of the oil into a glafs of fair water; and if the oil be adulterated with fpirit, the water will immediately turn milky, and, by continuing to (hake the glafs, the whole quantity of fpirit will be abforbed by the water, and leave the oil pure at top. Finally, if an eflential oil be adulterated by a cheap¬ er eftential oil, this is commonly done very artfully ; the method is to put fir-vveod, turpentine, or oil of Vol. XIII. Part I. turpentine, into the ftill, along with the herbs to be diftilled for their oil, fuch as rofemary, lavender, ori¬ ganum, &c. and by this means the oil of turpentine diftilled from thefe ingredients comes over in great quantity, and intimately blended with the oil of the genuine ingredient. The oils thus adulterated always difeover themfelves in time, by their own flavour be¬ ing overpowered by the turpentine-fmell: but the read^way to deteft the fraud, is to drench a piece of rag, or paper, in the oil, and hold it before the fire ; for thus the grateful flavour of the plant will fly off, and leave the naked turpentine-feent behind. The virtues of oils, being the fame with thofe of the fubftances from whence they are obtained, may be learned under their feveral articles, to which we refer. We have this account of different oils in the ifland of Madagafcar in the Univerfal Hiftory. Oils are of different forts ; the moft common are thofe of menach-tanhetanhe, menach fignifying oil, menachil,menach-chouivau,menach-mafoutra, menach- vourave, menach-apocapouc, menach-vintang, and me¬ nach arame. Menach-tanhetanhe is drawn from a particular plant, called, in the language of the coun¬ try, tanhetanhey and known in Europe by the name of pa/ma Chrljliy or Ricinus. Menachil is an oil from the feed of fefame, which they call voancaze; a great quan¬ tity whereof is made in the valley of Amboule. Me¬ nach chouivau is drawn from a fruit of the fize of an almond, extremely good in liquors or meats. Menach- mafoutra is drawn from nuts, the fruit of the tree which produces dragon’s blood. Mcnach-vourave is drawn from a fruit named fontji. Menach-apocapouc is fqueezed from the fruit apocapouc, extremely poi- fonous. Menach-vintang is an oil from large acorns, or maft. Menach-arsme is drawn from nuts, the fruit of the tree from which the gum tacamahaca is pro* duced. Rock Oil. See Petroleum. EJJential Oil of Rofes. See Roses. Method of Purifying Rancid Oils. See Chemistry, n° 14-31. OINTMENT, in pharmacy. See Unguent. OKEHAM, the capital of Rutlandfhire, in Eng¬ land, feated in a rich and pleafant valley, called the vale of Catmus. It is pretty well built, has a good church, a free-fehool, and an hofpital. W. Long. o. 45. N. Lat. 52. 40. OKINGHAM, Ockingham, or IVoxingharriy a large town of Berkfhire, in England, noted for the manufacture of filk ftockings. W. Long. o. to. N- Lat. 51. 26. OLAUS magnus. See Magnus. OKRA. See Hibiscus. O LAX, in botany : A genus of the monogynia or¬ der, belonging to the triandria clafs of plants’; and in the natural method ranking with thofe of which the order is doubtful. The calyx is entire ; the corolla funnel-fhaped and trifid; the nettarium tetraphyi- lous. OLD age. See Longevity. Many methods have been propofed for lengthening life, and render¬ ing old age comfortable. Cornara’s Treatile on this fuhjeCt is known to every body, and needs not be quoted. To fome of our readers the following fet. Qf £ k refolutioiis O L D I 194 1 OLD refolntions will perhaps be new, and may certainly be ufeful. . r The old men fhould refolve, except the reafons for a change be invincible, to live and to uie in the puo- lic profefiion of the religion in which they were horn and bred. To avoid all profane talk and intricate de¬ bates on facred topics. To endeavour to get the bet- ter of the intrufions of Indolence of mind and body, thofe certain harbingers of enfeebling age. Rather to wear out, than to mil out. To rife early, and as often as poffible to go to bed before midnight. Not to nod in company, nor to indulge rtpofe too ne- quently on the couch in the day. To watte as little of life in deep as may be, for we Avail have enough in the grave. Not to give up walking ; nor to ride-on horfeback to fatigue. Experience, and a late medical opinion, determine to ride five miles every day. No¬ thing contributes more to the prefervation of appetite, and the prolongation of life. Cheyne's direction to the valetudinary, “ to make exercife a part of their religion,” to be religioufly obferved. To continue the praftice of reading, purfued for more than hfty venrs, in books on all fubje&s ; for variety is the fait of the mind as well as of life. Other people s thoughts, like the bed converfation of one’s companions, are ge¬ nerally better and more agreeable than one’s own. Frequently to think over the virtues of one’s acquain¬ tance, old and new. To admit every eheerful ray of fun-lhine on the imagination. To avoid retrofpe&ion on a part friendfhip, which had much of love in it ; for memory often comes when fhe is not invited. To try to think more of the living and lefs of the dead ; for the dead belong to a world of their own. To live within one’s income, be it large or little. Not to let paffion of any fort run away with the underltanding. Not to encourage romantic hopes nor fears. Not to drive away hope, the foveteign balm of life, though he is the greateib of all flatterers. Not to be under the dominion of fuperftition or enthufiafm. Not wil- fuilv to undeitake any thing for which the nerves of the'mind or the body are not ftrong enough. Not to run the race of competition, or to be in another’s way. To avoid being joflled too much in the ftreet, being overcome by the noife of the carriages, and not to be carried even bv curiofity itfelf into a large crowd. To ftrtve to embody that dignified fentiment, “ to^write injuries in duft, but kindneffes in marble.” Not to give the reins to conftitutional impatience,Xor it is apt to hurry on the firib expreffions into the indecen¬ cy of fwearing. To recoiled, that he who can keep his own temper may be mailer of another’s. If one cannot be a ttoic, in bearing and forbearing, on every trying occafion, yet it may not be impoffible to pull the check-flring againft the morofenefs of fpleen or the impetuofity of peevifhnefs. Anger is a fhort mad- nefs. Not to fall in love, now on the precipice of threefcore, nor expeft to be fallen in love with. A connexion between fummer and winter is an impro¬ per one. Love, like lire, is a good fervant, but a bad mailer. Love is death, when the animal fpirits are gone. To contrive to have as few vacant hours upon one’s hands as poffible, that idlenefs, the mo¬ ther of crimes and vices, may not pay its vifit. To be always doing of fomething, and to have fomething to do. To hll up erne’s time, and to have a good deal to fill up ; for time is the materials that life is made of. If one is not able by fituation, or through the ” ncceffity of railing the fupplies within the year, or by habit (for virtue itfelf is but habit),to do much ollenta- tious good, yet do as little harm as poffible. To make the heft and the mod of every thing. Not to in¬ duce too much in the luxury of the table, nor yet to underlive the conftitution. The gout, rheum.atifm, and dropfy, in the language of the Spectator, feetn to be hovering over the difhes. Wine, the great pur¬ veyor of pleafure, and the fecond in rank among the fenfes, offers his fervice, when love takes his leave. It is natural to catch hold of every help, when the fpirits begin to droop. Love and wine are good cor¬ dials, but are not proper for the leverage of common uie. Refolve not to go to bed on a full meal. A light fupper and a good confidence are the heft re¬ ceipts for a good night’s reft, and the parents of im- difturbing dreams. Not to be enervated by the flatu¬ lency of tea. Let the fecond or thiid morning’s thought be to confider of the employment for the day ; and one of the laft at night to inquire what has been done in the courfe of it. Not to let one's tongue run at the expence of truth. Not to be too commu¬ nicative nor unreferved. A clofe tongue, with an open countenance, are the fafeft paffports through the journey of the world. To correA the error of too much talking, and reftratn the narrativenefs of the ap¬ proaching clima&cric. To take the good-natured fide in converfation. However, not to praife every body, for that is to praife no body. Not to be inquifitive, and eager to know fecrets, nor be thought to have a head full of other people’s affairs. Not to make an enemy, nor to lofe a friend. To aim at the efteem of the public, and to leave a good name behind. Not to be lingular in drefs, in behaviour, in notions, or expreffions of one’s thoughts. Never to give bad ad¬ vice, and to {hive not to fet a bad example. Seldom to give advice till afked, for it appears like giving fomething that is fuperfluous to one’s felf. Not to like or diflike too much at firft fight. Not to won¬ der, for all wonder is ignorance that poffeffion falls ffiort of txpeftation. The longing of twenty years may be difappointed in the unanfvvered gratification of a tingle hour. Whilft we are wiping, we fee the teil fide ; after we have taken poffeffion, the worft. Refolved to attend to the arguments on both lides, and to hear every body againft. every body. The mind ought not to be made up, but upon the heft evidence. To be affe&ionate to relations, which is a kind of felf- love, in preference to all other acquaintance. But not to omit paying the commanding refpedt to meiit, which is fuperior to all the accidental chains of kindred. Not to debilitate the mind by new and future com- pofitions. Like the fpider, it may fpin itfelf to death. The mind, like the field, muft have its fallow feafon. The leifure of the pen has created honourable ac¬ quaintance, and pleafed all it has wifhed to pleafe. To refolve not to be too free of promifes, for per- foimanees are fometimes very difficult things. Not to be too much alone, nor to read, nor meditate, or talk too much on points that may awaken tender fenfa- tions, and be too pathetic for the foul. fo enjoy the prefent, not to be made too unhappy by refleaion on the paft, nor to be opprefled by invincible gloom on the OM. OLD r ' the future. To give and receive comfort, thofe ne- cefiary alms to a diftrelied mind. To be conftantly S thankful to Providence for the plenty hitherto poffef- fed, which has preferved one from the dependence on party, perfons, and opinions, and kept one out of debt. The appearance of a happy fituation, and opportuni¬ ties of tailing many worldly felicities (for content has feldom perverted itfelf into difeontent), has induced many to conclude, that one mull be pleafed with one’s lot in life ; and it occafions many to look with the eye of innocent envy. To refolve mere than ever to {him every public ftation and refponfibility of conduft. To be fatisfied with being mailer of one’s felf, one’s habits, now a fecond nature, and one’s time. Deter¬ mined not to folicit, unlefs trampled upon by fortune, to live and die in the batnefs of trade, or a proieffion. To take care that pity (humanity is not here meant ) does not find out one in the endurance of any calami¬ ty. When pity is within call, contempt is not far off. Not to wifh to have a greater hold of life, nor to quit that hold. The poffible tenure of exiilence is of too fhort poffeffxon for the long night that is to fucceed : therefore rot a moment to be loft. Not to lofe fight, « even for a fingle day, of thefe good a»,d proverbial dodlors —diet—merryrnan—and quiet. Refolved to remember and to recommend, towards tranquillity and longevity, tbe three oral maxims of bir Hans Sloane “ Never to quarrel with one’s felf—one’s wife — or one’s prince.” Daftly, not to put one’s felf too much in the power of tbe elements, thofe great ene¬ mies to the human frame ; namely, the fun—the wind — the rain —and the night air. O/.P-Man of tbe Mountain. See Assassins. OLDCASTLD (Sir John), called the Good Lord Colham, was born in the reign of Edward III. and was the firtl author as well as the firfl martyr among the Englifh nobility : he obtained his peerage by mar¬ rying the heirefs of that Lord Cobham who with fo much virtue and patriotifm oppofed the tyranny of Richard II. By his means the famous flatute againft provifors was revived, and guarded againft by feverer penalties ; he was one of the leaders of the reforming party ; was at great expence in procuring and difper- fing copies of Wickliffe’s writings among the people, as well as by maintaining a number of his difciples as itinerant preachers. In the reign of Henry V. he was accufed of herefy j the growth of which was attribu¬ ted to his influence. Being a domeftic in the king’s court, the king delayed his profecution that he might reafon with him himfelf; but not being able to re¬ claim him to the church of Rome, he in great difplea- fure refigned him to its cenfure. He was apprehended ■and condemned for herefy ; but efcaping from the tow¬ er, lay concealed for four years in Wales, until the ru¬ mour of a pretended confpiracy was raifed againft him, and a price fet upon his head : he was at laft feized, and executed in St Giles’s f ields ; being hung alive in chains upon a gallows, ami burned by a fire placed underneath. He wrote “ Twelve Conclufions, ad- dreffed to the Parliament of England.” OLDENBURG, a title of the royal houfe of Denmark. The origin of this illuitrious family, we are told, is this. On the death of Chriftopher king of Denmark, See. in 1448, without iffue, there was a great cor.teil about ?5 ] O I. D the fuceeflion ; ?ncl a variety of faftions were raifeJtf particularly in Sweden and Norway, for the promo¬ tion of different perfons, and various animolities and numerous difeords were excited by the feveral parties, in order each to obtain their own ends. As foon as thefe intrigues were known in Denmark, the fenate relblved to proceed to the ele&ion of a king ; for it did not appear expedient to commit the government of affairs to the queen-dowager, at a time when they had every thing to fear from the two neigh¬ bouring crowns. At this time a lord of great weight, property, and ambition, fought the queen in marriage, the more eafdy to pave his way to the throne. This is a fadl mentioned by Pontanus and Meurfius, though neither takes notice of his name. But as lor a great number of years there was no precedent for eiedling a king out of the body of nobility, though agreeable to law, the queen entered into the views of the fenate, and declared fine would give her hand to no prince who ftiould not be judged deferving of the crown by the fupreme council of the nation. The advantages which would have accrued from an¬ nexing the duchy of Slefwick and Kolftein to the crown, made the fenate rirft call their eyes on Adol¬ phus. This matter required no long deliberation ; all faw the conveniencies refulting from fuch an union, and gave their afient. Immediately an embaffy was difpatched with the offer to Adolphus; but that prince confulting the good of his fubjedls, whofe intereft would have been abforbed in the fuperior weight of Denmark, declined it, with a moderation and difin- tereilednefs altogether uncommon among princes. However, that he micht not be wanting in refpCdl to the fenate, he propofed to them his nephew Chriftian, fecond fon to Theodoric, count of Oldenburg, a prince bred up at the court of Adolphus from his infancyc The propofition was fo agreeable to the fenate, that, without lofs of time, the ambaffadors were fent to Theodoric, to demand either of his fons he fhould pitch upon for their king. Theodoric’s anfwer to the ambaffadors was remarkable : “ I have three fons, fays he, of very oppofite qualities. One ia pafiion- ately fond of pleafure and women ; another breathes nothing but war, without regarding the juftice of the caufe ; but the third is moderate in his difpofition, prefers peace to the din of arms, yet Hands unrivalled in valour, generofity, and magnanimity.” He faid he painted thefe charadlers for the fenate’s informa¬ tion, defiring they would choofe which of the young princes they believed weald render the kingdom hap- piell. It was a matter which would admit of no he- iitation : with one voice the fenate declared for that prince whofe panegyric the father had lo warmly drawn ; and under thefe happy a nip ices commenced the origin of the grandeur of the houfe of Oldenburg, at this day feated on the throne of Denmark. Oldenhurg (Henry', a learned German gen¬ tleman in the 17th century, was defeended from the noble family of his name, who were earls of the coun¬ ty of Oldenburg, in the north part of Weftphalia, for many generations. He was born in the duchy of Bremen in the Lower Saxony ; and during the long Englifh parliament in King Charles I.’s time, was ap¬ pointed conful for his countryim-n, at London, after the afurpation of Cromwell : but being difeharged of • £ b 2 that OLD [ Oldenburg that employ, he was made tutor to the lord Henry Oldham 0’Bryiin> an Trifh nobleman, whom he attended to the t . - J. unlverfity of Oxford, where he was admitted to fludy in the Bodieian library in the beginning of the year 1656. He was afterwards tutor to William lord Cavendifh, and was acquainted vvkh Milton the poet. During his reiidence at Oxford, he became alfo acquainted with the members of that body there which gave birth to the royal fociety ; and upon the foundation of this latter, he was eledted fellow ; and when the fociety found it neceflary to have two fecretaiies, he was chofen af- fiftant-fecretary to Dr Wilkins. He applied himfelf with extraordinary diligence to the bufinefs of his office, and began the publication of the Philofophical Tranfactions with N° 1. in L664. In order to dif- charge this talk with greater credit to himfelf and the fociety, he held a correfpondence with more than fe- venty learned perfons, and others, upon a valt variety of fubjedis, in different parts of the world. This fatigue would have teen intupportable, had not he, as he told Dr Lifter, managed it fo as to make one letter .anfwer another ; and that to be always frefh, he never read a letter before he had pen, ink, and paper, ready to anfwer it forthwith ; fo that the multitude of his letters cloyed him not, nor ever lay upon his hands. Among others, he was a conftant correfpondent of Mr Robert Boyle, with whom he had a very intimate friendfhip ; and he tranflated feveral of that ingenious gentleman’s works into Latin. Mr Oldenburg continued to publifh theTranfadfions, as before, to n° xxxvi. June 25. 1677. After which the publication was difcontinued till the January fol¬ lowing, when it was again refumed by his fucceffor in the fecretary’s office, Mr Nehemiah Grew, who car¬ ried it on till the end of February 1678. Our author dying at his houfe at Charleton, near Greenwich in Kent, in the month of Auguit that year, was interred there. OLDENLANDIA, in botany : A genus of the tetrandria monogynia clafs. Its charadlers are thefe : The empalement of the flower is permanent, fitting up¬ on the germen ; the flower has four oval petals, which fpread open, and four ftamina, terminated by fmali fummits; it hath a roundifh germen, fituated under the flower, crowned by an indented ftigma ; the ger¬ men afterwards turns to a globular capfule, with two cells filled with fmali feeds. We have but one fpeeies ol this plant in the Englilh gardens; but Linnasus enumerates fix. OLDHAM (John), an eminent Englifh poet in the 17th century, fon of a nonconformilt minifter, was educated under his father, and then fent to Ed- mund-hall in Oxford. He became ufher to the free- fchool at Croydon in Surry ; where he received a vi- fit from the earls of Rocbefter and Dorfet, Sir Charles Sedley, and other perlons of diftindlion, merely upon the reputation of fome verfes of his which they had feen in manufcript. He was tutor to feveral gentlemens fons fucceffively ; and having faved a Imall fum of money, came to London, and became a perfedt vo¬ tary to the bottle, being an agreeable companion. He was quickly found out here by the noblemen who had vifited him at Croydon, who brought him ac¬ quainted with Mr Dryden. Fie lived moftly with fiie earl of Kingfton at Holme-Pierpoint in Not- 196 ] OLE tinghamfhire, where he died of the fmallpox in 1683, OlffHead in the 30th year of his age. His acquaintance with 11 learned authors appears by his fatires againft the Je- fuits, in which there is as much learning as wit difco- ' vered. Mr Dryden efteemed him highly. His works are printed in 2 vols i2mo. They chiefly conlift of fatires, odes, tranflations, paraphrafes of Horace and other authors, elegiac verfes, imitations, parodies, fa¬ miliar epiftles, &c. OLD-HEAD, fituated in the county of Cork, and province of Munfter, four miles fouth of Kinfale, in the barony of Courcies, Ireland : it is a promontory, running far into the fea, on which is a light-houfe for the convenience of (hipping.—A mile from its extre¬ mity is an ancient caftle of the lords of Kinfale, built from one fide of the Ifthmus to the other, which de¬ fended all the lands towards the head : this place was formerly called Duncearma, and was the old feat of the Iriffi kings. The Ifthmus, by the working of the fea, was quite penetrated through, fo as to form a ttupen- dous arch, under which boats might pafs from one bay to the other. Among the rocks of this coaft there are aviaries of good hawks; alfo the fea-eagle or ofprey build their ntfts and breed in them. OLDMIXON (John), was defcended from an an¬ cient family in Somerfetffiire : he was a violent party- writer and malevolent critic, who would fcarcely have been remembered, if Pope, in refentment of his abufe, had not condemned him to immortality in his Dun- ciad. His party-wiitings procured him a place in the revenue at Liverpool, where he died at an advanced age in the year 1745- Befideshis fugitive temporary pieces, he wrote a Pliftory of the Stuarts in folio; a Critical Pliftory of England, 2 vols 8vo ; a volume of Poems, fome dramatic pieces, &c.; none of them wor¬ thy of notice, his principal talent being that of falfify. ing hiftory. Old-wife, or Wrajfe. See Laerus. Old-wife Fiji), See Balistes. Old-woman's island, a narrow flip of land, about two miles long, feparated from Bombay in the Ealt Indies by an arm of the fea, which, however, is paff- abie at low water. It terminates at one extremity in a fmali eminence, on which a look-out houfe is kept for veffels. Near the middle are three tombs kept con- ftantly white, as land-marks into the harbour. From the end of the ifland a dangerous ledge of rocks (hoots forth, which are not very eafily cleared. It produces only pafture for a few cattle. OLE A, in botany, the olive-tree'. A genus of the monogynia order, belonging to the diandria clafs of plants; and in the natural method ranking under the 44th order, Sapieria. The corolla is quadrifld, with the fegments nearly ovate. The fruit is a monofper- inous plum. There are three fpecies of the olea. 1. The Euro¬ pean or common olive-tree, rifes with upright folid' (terns, branching numeroufly on every fide, 20 or 30 feet high ; fpear-fliaped, (tiff, oppofite leaves, two or three inches long, and half an inch or more broad 5 and at the axiilas (mall clufters of white flowers, fuc- ceeded by oval fruit. This fpecies is the principal fort cultivated for its fruit; the varieties of which are numerous, varying in fize, colour, and quality. It OLE [ 197 ] OLE It is a native of the fouthern warm parts of Europe, and is cultivated in great quantities in the fouth of France, Italy, and Portugal, for the fruit to make the olive-oil, which is in fo great repute, and is tranf- ported to all parts, to the great advantage of thofe countries where the trees grow in the open ground i the green fruit is alfo in much tfteem for pickling, of which we may fee plenty in the Ihops. 2. The capenjisy or cape box-leaved olive, rifes with fhrubby ftems, branching numeroufly from the bottom, fix or feven feet high ; fmall, oval, thick, ftiff, Ihining leaves ; and at the axillas fmall clufters of whitilh flowers; fucceeded by fmall fruit of inferior value. 3. Olea odoratijjima (Indian name, quefa; Japanefe name,^/o Ran, it: SjuRun) is thus defcribed byThun- berg, bulbis JibroJis, folih enjbforrmbm, fejjililus, flori- luspendulis. (See Plate CCCXLIX.) The flower of the olea odoratiflima is by fome find to give the fine flavour to the green tea ; but Thunberg attributes the faid flavour to the Cemellie feftrque. Olive-trees are eafily propagated by (hoots ; which, when care has been taken to ingraft them properly, bear fruit in the fpace of eight or ten years. Thofe kinds of olive-trees which produce the pureft oil, and bear the greateft quantity of fruit, are ingrafted on the flocks of inferior kinds. Different names are affigned by the French to the different varieties of the olive-tree ; and of thefe they reckon 19, whilfl in Florence are cultivated no fewer than 32. Ohve (hoots are ingrafted when in flower. If the operation has been delayed, and the tree bears fruit, it is thought fufficient to take oft' a ring of bark, two fingers breadth in extent, above the higheft graft. In that cafe the branches do not decay the firft year ; they afford nourffhment to the fruit, and are not lopped off till the following fpring. Olive-trees are common¬ ly planted in the form of a quincunx, and in rows at a conliderable diftance from one another. Between the rows it is ufual to plant vines, or to fow fome kind ot grain. It is obferved, that olives, like many other fruit-trees, bear well only once in two years. The whole art of dreffing thefe trees conlifts in remo¬ ving the fuperfluous wood ; for it is remarked, that trees loaded with too much wood produce neither fo much fruit nor of fo good a quality. Their propagation in England is commonly by layers. The laying is performed on the young branches in fpring. Give plenty of water all fummer, and they will fometimes be rooted and fit for potting off in autumn; but fometimes they require two fummers to be rooted effeftually : when, however, they are properly rooted, take them off early in autumn, and pot them feparate- ly; give water, and place them in the fhade till they have taken freftr root ; and in O&ober remove them into the green houfe, &c. Thofe you intend to plant in the open ground, as. before fuggefted, (hould be kept in pots, in order to have occaiional (belter of a garden-frame two or three years, till they have acquired fome fize, and are hard¬ ened to the full air ; then transplant them into a warm border againft a wall : mulch their roots in winter, and mat their tops in frafty weather. Olives have an acrid, bitter, extremely difagreeable tafte : pickled (as we receive them from abroad) they prove lefs difagreeable. The Lucca olives, which are fmaller than the others, have the weakeft tafte ; the Spanilh, or larger, the ftrongeft ; the Provence, which are of a middling fize, are generally the molt efteemed. When olives are intended for prefervation, they are gathered before they are ripe. The art of preparing them conlifts in removing their bitternefs, in preferv- ing them green, and in impregnating them with a brine of aromatifed fea-falt, which gives them an a- greeable tafte. For this purpofe different methods are employed. Formerly they ufed a mixture of a~ pound of quicklime, with fix pounds of newly fifted wood-afhes ; but of late, inftead of the afhes, they employ nothing but a lye. This, it is alleged, foftens the olives, makes them more agreeable to the tafte, and lefs hurtful to the conftitution. In forne parts of Provence, after the olives have lain fome time in the brine, they remove them, take out the kernel, and put a caper in its place. Thefe olives they preferve iiv excellent oil; and when thus prepared, they ftrongly ftimulate the appetite in winter. Olives perfeftly ripe are foft and of a dark-red colour. They are then eaten without any preparation, excepting only a feafoning of pepper, fait, and oil; for they are extremely tart, bit¬ ter, and corroftve. The oil is undoubtedly that part of the produce of olive-trees which is of greateft value. The quality of it depends on the nature of the foil where the trees grow, on the kind of olive from which it is expreffed, on the care which is taken in the gathering and pr ef¬ fing of the fruit, and likewife on the feparation of the part to be extracted. Unripe olives give an into¬ lerable bitternefs to the oil ; when they are over ripe, the oil has an unguinous tafte : it is therefore of im¬ portance to choofe the true point of maturity. When the fituation is favourable, thofe fpecies of olives are cultivated which yield fine oils ; otherwife, they cul¬ tivate inch fpecies of trees as bear a great quantity of fruit, and they extract oil from it, for the ufe of foap- cries, and for lamps. They gather the olives about the months of No¬ vember or December. It is beft to put them as foon as poffible into balkets, or into bags made of wool or hair, and to prefs them immediately, in order to ex¬ tract a fine oil. Thofe who make oil only for foap- eries, let them remain in heaps for fome time in their ftorehoufes; when afterwards preffed, they yield a much greater quantity of oil. Thofe even who ex- traft oil to be ufed in food, fometimes allow them to ferment in heaps, that they may have more oil; but this is extremely hurtful to the quality of the oil, and is the reafon why fine oil is fo very rare. M. Duhamel recommends not to mix found olives with thofe in which a fermentation has already begun, and ftill lefs with fuch as are putrified : in both cafes, the oil which is extra&ed is of a bad quality, and unfit for preferva¬ tion. In order to have the oil in its purity, we muft allow it to depofit its fediment, and then pour it off into another veffel. The oil extradled from the pulp only of olives is the moft perfect which can be ob¬ tained, and. will keep for feveral years; but that which OLE [ 1 OLE is extracted from the kernel only, or from the nut, or from the whole olive ground in the common way in public mills, has always more or fewer defers, lofes its limpidity in a certain time, and is very apt to be¬ come rancid. Care muft be taken likewife to keep the oil in proper veffels well fhut. After all, in the courfe of time, olive-oil lofes its qualities, becomes difagreeable to the tafte and fmell, diminiihes in flui¬ dity, and at length thickens confiderably. The refufe of the firft prefling, when fqueezed a fecond time, yields an oil, but thicker and lefs pure than the former. What remains after the fecond prefiing, when mixed with a little water and placed in a pan over the fire, produces by preflure a third oil, but of a very inferior quality. What remains af¬ ter all the oil is exprefled, is termed grignon, and is of no farther ufe but as fuel. The fediment, or faces, of new oil, we name after the ancients, amurca : it is an excellent remedy in rheumatic affe&ions. In Paris the wax ufed for flioes is commonly made of the dregs of defecated oil and fmoke-black. Oil of olives i* an ingredient in the compofition of a great many balfams, ointments, plaflers, mollify¬ ing and relaxing liniments. It is of an emollient and folvent nature ; mitigates gripes of the colic, and the pains accompanying dyfentery ; and is one of the hell remedies when one has chanced to fwallow corrofive poifons ; but it by no means prevents the fatal acci¬ dents which enfue from the bite of a fnake, as has been pretended. It is an effectual cure, as M. Bour¬ geois tells us, for the fling of wafps, bees, and other infedls. A bandage foaked in the oil is immediately applied to the fling, and a cure is obtained without any inflammation or fwelling. Olive oil is of no ufe in painting, becaufe it never dries completely. The bell foap is made of it, mixed with Alicant falt-wort and quicklime. Great drought, as well as much rain, is extremely injurious to the crop of olives. This fruit is much expofed to the attacks of a worm peculiar to itfelf, and which injures it fo much, that afier the olives are gathered the produce of the oil extraifled from them is diminilhed one half. The wood of the olive tree is beautifully veined, and has a pretty agreeable fmell: it is in great efteem with cabinet-makers, on account of the fine polilh which it affumes. It is of a refinous nature, and con- lequently excellent for burning. As the laurel branch is the fymbol of glory, fo the olive-branch covered with leaves has fiom the molt ancient times been the emblem of concord, the fymbol of friendfhip and peace. The leaves of olive-trees have an aftringeht quality. Many people ufe them in making gargles for inflam¬ mations of the throat. Thefe plants in this country muft be kept princi¬ pally in pots for moving to the fhelter of a green-houfe in winter ; fot they are too tender to profper well in the open ground in this climate : though fometimes they are planted againft a warm fouth wall, and fheltered oc- cafionally ffom froft in winter, by mulching the roots, and matting their tops ; whereby they may be pre- ferved, and will fometimes produce fruit for.pickling : a very fevere winter, however, often kills or greatly injures their young branches ; therefore let the prin-Oleaginoas cipal part be potted in rich earth, and placed among II the green houfe Ihrubs, and managed as others of u eariu* that kind. w ^ Thefe trees are often fent over from Italy to the Italian warehoufes in London, along with orange- trees, &c. where pretty large plants may be purchafed reafonably, which fhould be managed as dire&ed for orange-trees that are imported from the fame country. See Citrus. OLEAGINOUS, fomething that partakes of the nature of oil, or out of which oil may be exprefled. OLEANDER, or rose bay, nerium : A genus of the peutandria monogynia clafs. Its charadlers are thefe : The empalement of the flower is permanent, and cut into flve acute fegments; the flower has one funnel-lhaped petal, cut into five broad obtufe feg¬ ments, which are oblique ; it hath a ne&arium, ter¬ minating the tnbe, which is torn into hairy fegments; it hath five fhort awl-fhaped ftamina within the tube ; it hath an oblong germen, which is bifid, with fcarce any ftyle, crowned by Angle ftigmas ; the germen af¬ terwards turns to two long, taper, acute-pointed pods, filled with oblong feeds lying over each other like the feales of a fiih, and crowned with down. There are four fpecies. Thefe plants are generally propagated by layers in this country ; for although they will take root from cuttings, yet that being an uncertain method, the other is generally preferred; and as the plants are very apt to produce fuckers or fhoots from their roots, thofe are belt adapted for laying; for the old branches will not put out roots: when thefe are laid down, they fliould be flit at a joint, in the fame manner as is pra&ifed in laying of carnations. There are few plants which are equal to them either to the fight or fmell, for their feent is very like that of the flower* of the white thorn ; and the bunches of flowers will be very large if the plants are ftrong. It is called nerium from “ humid/’ becaufe it grows in humid places. The plant itfelf has a force which is infuperable ; for its juice excites fo great and violent an inflammation, as immediately to put a flop to deglutition ; and if it be received into the ftomach, that part is rendered incapable of retaining any thing ; the pernicious drug exerting its force, and purging both upwards and downwards. Nerium in qualities refembles the apocynum. See Apocynum. But when handled and examined upon an empty ftomach, in a clofe chamber, it caufes a numb- nefs coming by degrees, with a pain in the head ; which ftrows that fomething poifonous belongs even to the fmeli, though there is no danger if it be received in the open air, as may be found upon trial. Antidotes againft itspoifon are vinegar and all acids. OLEARIUS (Adarn), minilter to the duke of Holftein, and feoretary to the embafl'y fent in 1633 to the great duke of Muicovy and to the king of Perfia. He fpent fix years in this employment; and, on hi* return, publiftred a relation of his journeys, with maps and figures, at Slefwic, i6if6, in folio. He wrote an Abridgement of the Chronicles of Ho/fein from 1448 to 1663 ; and was appointed librarian to the duke of _ Holftein, in which capacity he probably died. He has the character of an able mathematician, an adept ©f OLE [ IQ9 ] O L I Olearim of mnfic, and a good orientalift, efpcciaily in the Per- , II fian language. Cleum. Olearius (Godfrey), fon of Godfrey Oleanus, _ v D. D. fuperintendant of Halle in Saxony, was born there in 1639- He became profeffor of Greek at Leipfic ; and (howed his abilities in that language by 52 exercitations on the dominical epiftles, and upon thofe parts of the epiftles in the New Teilament which are read in the public exercilV.s, and which among the Lutherans are the fubjett of part of their fermons. He difcharged the molt important polls in the univerfity, and among other dignities was ten times reftor of it. His learning and induftry were difplayed in to6 theo¬ logical deputations, 61 in philofophy, fome program- mas upon difficult points, feveral fpeeches and theolo¬ gical counfels ; which make two thick volumes : be- fide his Moral Theology, his introduAion to Theology, which treats of cafes of confcienee, and his Herme- neutica Sacra. He lived to a good old age, dying in 1713. His eldeft fon of his own name was a man of genius and learning, a profefibr in the lame univerlity, who publilhed feveral works, but died young of a con- fumption before bis father. OLECRANUM, or Olecranon, in anatomy, the protuberance of the ulna, which prevents the joint of the elbow from being bent back beyond a certain length. See Anatom y, n° 51. OLENUS, a Greek poet, older than Orpheus,, came from Xanthe, a city of Lycia. He compofed feveral hymns, which were fang in the ifland of Delos upon fellival days. Olenus is faid to have been one «f the founders of the oracle at Delphi ; to have been the firft who filled at that place the office of prieft of Apollo; and to have given refponies in verfe : but the truth of thefe affertions is very doubtful. OLE RON, an ifland of France, on the coaft of Aunis and Saintonge, about five miles from the con¬ tinent. It is 12 miles in length, and five in breadth; and is very fertile, containing about x 2,000 inhai i- tants, who are excellent feamen. It is defended by a caftle, which is well fortified ; and there is a light- houfe placed there for the diredlion of (hips. It is 14 miles fouth-eaft of Rochelle. W. Long. 1. 26. N. Lat. 46. 10. Sea-Laws of Oleron, certain laws relative to ma¬ ritime aiTairs, made in the time of Richard I. when he was at the ifland of Oleron. Thefe laws, being ac¬ counted the moft excellent fea-laws in the world, are recorded in the black book of the admiralty. See &?/- den's Mare Claufum. OLEUM palm* ch risti, commonly called ca- Jlor oily is extra&ed from the kernel of the fruit pro¬ duced by the Ricinus Atnertcanus. (See Ricinus). This oil has been much ufed as a purgative in medi¬ cine. It a&s gently on the bowels, with little or no irritation. By many phyficians it has been deemed a fovereign remedy in bilious, calculous, and nephri¬ tic complaints ; but its tafte is extremely naufeous, and, when frequently ufed, it is apt to relax the tone of the bowels. It is recommended to be given in clyfters; and Dr Canvane of Bath affirms, that when children can¬ not be made to fwallow any medicine, if the navel and hypochondria be rubbed with this oil, it will produce one or two phyfxcal (tools. He adds, that I given in fmall draughts, or by clyfter, or by embro- Olf.uflory cation, it is an excellent and wonderful vermifuge. _ II OLFACTORY nerves. See Anatomy, n° 136 and 140. OLGA, queen of Igor the fecond monarch of Ruffia, who flouriftied about the year 880, having fuc- ceeded his father Ruric, who died in 878. Olga was born in Plefeow, and was of the belt family in that city. She bore him one fon, called Swdojlaw. Igor being murdered by the Drewenfes, orDrewliani, Olga revenged his death. She went afterwards, for what reafon wtc know not, to Conllantinople, where ftie was baptized, and received the name oi Helena. The emperor John Zimifces was her god-father, and fell in love with her as we are told : but (he, al¬ leging their fpiritual alliance, refufed to marry him. Her example made fome impreffion upon her fubjedls, a good number of whom became converts to Chri- ftianity ; but none upon her fon, who reigned for a long time after her death, which happened at Pereflaw, in the 80th year of her age, 14 years after her baptifm. The Ruffians to this day rank her among their faints, and commemorate her feilival on the I ith of July. OLIBANUM, in pharmacy, a gummy reiin, the pro ludl of the juntperus I'jCia (Lin.), brought from Turkey and the Eaft Indies, ufualiy in drops or tears like thofe of rnaftich, but larger; of a pale yellowifti, and fometinies reddifh, colour ; a moderately warm pungent tafte, and a ftrong, not very agreeable fmell. This drug has received many different appellations, according to its different appearances : the fingle tears are called Amply olibanum, or thus ; when two are join¬ ed together, they have been called thus mafculum, and when very large, thus jeemininum : fometimes four or five, about the bignefs of filbreds, are found adhering to a piece of the bark of the tree which they exuded from ; thefe have been named thus cortkofurn : the finer powder which rubs off from the tears in the carriage, mica thurts; and the coarfer powder, manna thuris. This drug is not however, in any of its ftates, what is now called thus or franklncenfe in the (hops. See the article Thus. Olibanum confifts of about equal parts of a gummy and refinous fubftance ; the firft foluble in water, the other in rectified fpirit. With regard to its virtues, abundance have been attributed to it, particularly in diforders of the head and bread, in hsemoptoas, and in alvine and uterine fluxes: but its real eff'efts in thefe cafes are far from anfwering the promifes of the re- commenders. Riverius is faid to have had large experi¬ ence of the good effects of this drug in pleurifies, efpe- cially epidemic ones : he diredls a fcooped apple to be filled with a dram of olibanum, then covered and roaft- ed under the afties; this is to be taken fora dofe, three ounces of carduus water after it, and the patient co¬ vered up warm in bed; in a (hort time, he fays, either a plentiful fweat, or a gentle diarrhoea, enfues, which carry off the difeafe. Geoffrey informs us, that he has frequently made ufe of this medicine after venefec- tion, with good fuccefs ; but acknowledges that it has fometimes failed. OLIG2EDRA, in natural hiftory, the name of a genus of cryftals compofed of very few planes, as the name expreffes. The word is compounded of “ a few,” O L I [ 200 1 O L I * Oligarchy few,5* and (t a plane.” The bodies of this clafs O 'varc arC cryftals t^ie *mPer^e<^ kind ; being compofed . of columns affixed irregularly to feme folid body at one end, and the other terminated by a pyramid: but the column and pyramid being both pentangular, the whole confifts only of ten planes, and not, as the com¬ mon kind, of 12. OLIGARCHY, a form of government where¬ in the adminiftration of affairs is confined to a few hands. OLIO, or Oglio, a favoury diffi, or food, com- ;pofed of a great variety of ingredients ; chiefly found at Spanifh tables. The forms of olios are various. To give a notion of the ftrange aflemblage, we fliall here add one from an approved author. Take rump of beef, neats tongues boiled and dried, and Bologna faufages; boil them together, and, after boiling two hours, add mutton, pork, venifon, and bacon, cut in bits ; as alfo turnips, carrots, onions, and cabbage, borage, endive, marigolds, forrel, and fpinach ; then fpices, as faffron, cloves, mace, nut¬ meg, &c. T his done, in another pot put a turkey or goofe, with capons, pheafants, wigeons, and ducks, partridges, teals, and flock-doves, fnipes, quails, and larks, and boil them in water and fait. In a third veflel, prepare a fauce of white wine, ftrong broth, butter, bottoms of artichokes, and chefnuts, with cauliflowers, bread, marrow, yolks of eggs, mace, and faffron. Laitly, difh the olio, by firft laying out the beef and veal, then the venifon, mutton, tongues, and faufages, and the roots over all ; then the largeft fov/ls, then the fmalleft, and laftly pour on the fauce. OLISIPO, (Pliny, Antonine, Infcriptions); a town of Lufitania, fituated on the north fide of the frith of the Tagus ; of fuch antiquity, that Solinus thought it was built by Ulyfles ; and Mela, probably to favour this opinion, writes, according to the common copies, Ulyjfipo ; both of them perhaps deceived by the fimi- larity of found. It was a municipium, with the fur- name Felicltas ’Julia.) a privilege granted by the mu¬ nificence of Auguftus, (Infcriptions, Pliny). Now Lifbon, capital of Portugal, fituated on the north bank of the Tagus, diffant about ten miles from its mouth. See Lisbon. OLIVAREZ (Count de), by name Z)on Gajparde Gtixmari) favourite and minifter to Don Philip IV. of Spain, about 1620 ; a man of great parts and bound- lefs ambition. Philip no fooner became king, than lie became the fubjeft of this his favourite. The king had abilities, it is true, but they lay dormant ; and whilft he fpent his time in liftlefs inadlivity, the whole government was under the direction of Oliva¬ rez. The count’s management, indeed, was fuffici- ently dexterous in accon a cubical piece of wood, called a block ; h, the peel, a circular board, to be put under the block. By turning the ferew, all the liquor is preffed out of the mafhed olives, and is called virgin-oil; after which, hot water being poured- upon the remainder in the prefs, a coarfer oilis obtain¬ ed. Olive-oil keeps only about a year, after which ft degenerates. OliI'M- Colour, a yellow mingled with black. Olive (Peter John), was born in France, and died in 1297, in the fiftieth year of his age. In his youth he wrote a book in praife of the Virgin Mary, which was condemned during the pontificate of Nicholas III. as containing fome things too extravagant. He after¬ wards was frequently accufed by the brothers of his or¬ der, whofe refentment he had drawn upon himfelf by his fevere reproofs ef their luxury, and his endeavours to recal them to the poverty and rigour of their firft in- ftitution. After his death his body was dug up, he was condemned as a heretic, and his writing? were burrit, and remained prohibited till the time of Sixtus IV. who having ordered them to be examined, decla¬ red they contained nothing .exprefsly contrary to the Catholic faith. The propofitions condemned by John are mentioned by Emmericus, in his Dire&ory of the Inquifition, under twenty-two heads. The chief of them are, “ That the Pope was the myftical antichrift ; that St Francis was the angel in the Revelations faid to have the mark of the living God, and that his rule was the true gofpel ; that the perfect ftate of the church began with St Francis; and that Chrift and his apoftles had no property either in common or in par¬ ticular, but only the ufu-fruft of what they enjoyed.” OLIVER (Ifaac), an excellent Englifh painter, born in 1556, eminent both for hiftory and portraits. Several fine miniatures of this mafter are to be feen in the collections of our nobility and gentry ; fome them portraits of himfelf. As he was a very good de- figner, his drawings are finiflied to an extraordinary degree of perfection ; many being copies after Parme- giano. Rubens and Vandyck painted James I. after a miniature of Oliver’s, which is a fufficient teftimony of his merit. He died in €617. Oliver (Peter), the fon and difciple of Ifaac Oli¬ ver, was born in 1601. He arrived at a degree of per¬ fection in miniature portraits confeffedly fuperior to his father, or any of his cotemporaries, as he did not con¬ fine his fubjeCts to a head Only. In the collections of Charles I. and James II. there were 13 hiftorical fub¬ jeCts painted by this Oliver; of which feven are ftill . C c .preferred Olive, Oliver. I Plate cccxLvir. / O L * [ »02 ] O L Y Olivet, Olivetan. prcferved In the clofet of queen Caroline at Kenfing- ton ; and a capital painting of his wife is in the pof« feffion of the duchefs of Portland. He died in 1660. OLIVET, or Mount of Olives (anc geog.), was fituated to the eaft of the city of Jerufalem, and part¬ ed from the city only by the brock Kidron, and by the valley of jehofhaphnt, which ftretches out from the north to the fouth. It was upon this mount that So¬ lomon built temples to the gods of the Ammonites (1 Kings xi. 7.) and of the Moabites, out of com- plaifance to his wives, who were natives of thefe na¬ tions. Hence it is that the Mount of Olives is called the mountain of corruption (2 Kings xxiii. 13.) Jo- fephus fays, that this mountain is at the dillance of jive ftadia, or furlongs, from Jerufalem, which make 62 J geometrical pace?, or the length of a Sab! ath- day’s journey, fays St Luke (A£ls i. 12.) Fhe Mount of Olives had three fummits, or was compofed of three feveral mountains, ranged one after another from north to fouth. The middle fummit is that from whence our Saviour afcended into heaven. It was upon chat towards the fouth that Solomon built temples to his idols. The fummit which is moft to the north is diflant two furlongs from the middlemoft. This is the high ell of the three, and is commonly called Galilee. In the time of King Uzziah, the Mount of Olives was fo (battered by an earthquake, that half of the earth that was on the weftern fide fell down, and soiled four furlongs or 50c paces from thence, towards the mountain which was oppofite to it on the eaft j fo that the earth blocked up the highways, and covered the king’s gardens. Mr Maundrell tells us, that he and his company going out of Jerufalem at St Stephen’s gate, and croi- jfmg the valley of Jchofhaphat, began immediately to afcend the mountain ; that being got above two-thirds of the way up, they came to certain grottoes cut with intricate windings and caverns under ground, which syere called the fepulchres of the prophets ; that a little kigher up were twelve arched vaults under ground, ftanding fide by fide, and built in memory of the apoftles, who are faid to have compiled their creed in this place j that fixty "paces higher they came to the place where Chrill is faid to have uttered his prophecy concerning the final deftruftion of Jerufalem ; and a lit'cle on the right hand, to another, where he is faid to have di&ated a fecond time the Lord’s prayer to his difciples ; that fomewhat higher is the cave of a faint called Pelagia ; a little above that a pillar, de¬ noting the place where an angel gave the Blefled Vir¬ gin three days warning of her death; and at the top, of all, the place of our Blefted Lord’s afeenfion. OLIVET AN (Robert), related to the famous Cal- sfin, printed at Neufchatel in 1535, in folio, a verlion of the Bible into French, the firft which had been ^ranflated from the original Hebrew and Greek. It is written in an uncouth and barbarous ftyle, and is far fijom being faithful. The charadlers in which it is printed are Gothic, and the language of it is no lefs fo. It is valued only becaufe it is rare to be found. Calvin is thought to have had a very confiderable (hare in this tranflation. Olivetan furvived his publication but a (hort time ; for he was poifoned at Rome the year after, of which his tranftation is alleged to have been the caufe. Qlivetan's Bible, revifed by John Cal¬ vin and N. Malinger, was reprinted at Geneva, in 1540, in quarto. This edition is ftill rarer than the former. It is called the : ible de I’Epec, becaufe the printer had a fword for his fign. OLIVIER (Claude Matthieu), advocate of the par- liament of Aix, was born at Marfeilles in 1701, and ap¬ peared at the bar with eclat. He had a chief hand in tne eftablifhment of the academy of Marfeilles, and was one of its original members. He poftefied a quick and lively genius. A few hours retirement from fociety and from his phafures were frequently fufficient to enable him to Leak and write, even on important cesufes ; but his works commonly bore marks of hafte. Given to excels in every thing, he would employ a fortnight in kudy- ing the Code and the Digeft, or in (ioriog 1m mind with the beauties of Demoilhenes, Homer, Cicero, or Bofiuet; and then abandon himfdf for another fort¬ night, frequently a whole month, to a life of frivolity and diffipation. He died in 1736? at t^ie aSe 35* He publifhed I. L’llijhire de Phillippe roi de Mace* doine, et pare d’Alexandre Id Grand, 2 vols. l2mo. No writer has fo ably handled the hiftory ot the age of Philip, the interefts of the diffeient nations of Greece, and their manners and cuftoms : but the conduct of the work is extremely defective, d he digreifions are too frequent, and often tedious. The ftyle is in no icfpett fuitable to a hiftory. It is in general dry, uncon- nedled, and like the ftyle of a differtation. Some¬ times, however, we find in it pafTagesi full of iiie and • beauty, and turns of exprefiicn truly original A dif- eafe of the brain,, with which he was attacked, and under which he laboured feveral years, prevented him from putting his laft hand to the work 2. Memoire fur les fecours donnes aux Romains par Us Marfeiilois pendant la 2de Guerre P unique. 3. Memoire fur les fe¬ cours donnes aux Romains peer les Marftillois durant la Guerre contre les Gaulois. OLMUTZ., a town in Germany, in Moravia, with a biftiop’s fee., and a famous univerfity. The public buildings are very haudfome, particularly the Jefuits college. It is a populous, tradiug, and very tlrong place ; and yet it was taken, with the whole garrifon, by the king of Pruffia in 1741. In July, 1 75 8 he be- fieged it again ; and when he had almoft taken the pl-ice he was obliged to raife the ftege, to go and meet the Ruffian army It is feated on the river Mo- rave. E. Long. 17 3 J. N Lat. 49. $P. OLOCENTROS, in natural hiftory, a name given by the old Greeks to a fmall animal of the fpider kind, whofe bite was accounted mortal. It is the fame with the folipuga, fo called from its Hinging, orbiting moft: violently, in places, or feafons, where the fun had the moft power, as Africa, Sec. The name folifvga was a corrupt way of writing that word; and this feems alfo a falfe way of writing the word heliocentrosy which fig- nifies the fame as folipuga. OLYMPIA (Mallachini Donna), a woman of a very uncommon charabter. She fkmrifhed about the middle of the laft century. She was fifter-in-law to Pope Innocent X and had the addrefs to acquire an unlimited power over this vain,- weak, and injudicious ecclefiaftie. Her fon Camillo was promoted to the cardinalate, under the title of Pamphilio ; but falling iu love with the PrincefsRo(fana,abeautiful young widow, he laid afide his hat, and married. The crime, if it was one, was efteemed by the Romans in general at leaft ve¬ nial, O L Y [ 203 ] O L Y Olympia- nial. The pope, however, was diTpleafed ; and Olym- v1"— pia procured their banifhment, being afraid leil her daughter-in-law fhould leffen her authority in the /acred court. This authority, equally unnatural and uncommon, rellefted neither honour on her who held it, nor oil the man who allowed her to hold it. Such elevated fituations, diowever, whether they are the reward of merit, the effedl of chance, or acquired by cunning, are fddom very fe- cure. Olympia, who had procured the difgrace of many who did not deferve it, and who had herfelf long merited fuch a fate, at length experienced both difgrace andbaniihment. This was obtained by means of cardinal Panzirollo, a great favourite of the pope’s. The im¬ mediate caufe of it was this: The pope had determined, in order to leffen his own trouble, to adopt a nephew, and to make him a Cardinal Patron, in order to give au¬ dience to ambafiadors and minifters, and in hisabfenceto prelide at the council. For this purpofe, at the recom¬ mendation of his favourite, his holinefs made choice of Allalli, brother of the Marquis Aftalli, who had mar¬ ried a niece of Olympia. Olympia indeed was {lightly confulted on the affair, and fhowed no difapprobation of the appointment. The pope, however, no fooner got him fixed in his new office, than he fhowed his own weaknefs by repenting of it. Olympia too was difpleafed, and by her felicitations procured the dif¬ grace of Aftalli, before he had enjoyed either the honours or emoluments of his office. Panzirollo, how¬ ever, foon managed matters fo as to turn the feales : he prevailed on the pope again to countenance and honour Aftalli; and, what was more, had influence fuf- ficient to perfuade him to difgrace Olympia, and to banifh her the court. She had indeed abufed her au¬ thority in a moft fcandalous manner, and had gained fuch an abfolute afeendant over the pope, that in every thing his will had been fubfervient to her didlates. Her avarice and ambition were unbounded : fhe difpofed of all benefices, which were kept vacant till fhe fully informed herfelf of their value : fhe rated an office of 1000 crowns for three years, at one year’s revenue, and if for life, at 12 years purchafe, one half of which fum fhe required to be paid in advance : fhe gave audienfce upon public affairs, ena&ed new laws, abrogated thofe of former popes, and fat in council with Innocent, with bundles of memorials in her hands. It was gene¬ rally faid that they lived together in a criminal corre- fpondence, and that fhe had charmed him by fome fecret incantation. In the Proteftant countries the loves and intrigues of Innocent and Donna Olympia were repre- fented upon the ftage; and fevere farcafms were daily put into the hands of Pafquin at Rome. As fhe had ufurped fuch an abfolute authority, the new cardinal nephew law the neceffity of ruining her credit; he therefore feconded the endeavours of Panzirollo. He infinuated to the pope, that his reputation had fuffered greatly among the Catholics by her fcandalous proceedings, and that his nuncios were treated with difrefpeft and contempt at the courts of the Emperof, France, and Spain. Upon thefe reprefentations, Innocent at length, but with great reluctance, banifhed Olympia, and was reconciled to Prince Camillo and the Princefs Roflana ; though fome authors affirm that her banifh- ment was no more than a political retreat, and that fhe flill in private dire&ed the affairs of the pope. A woman of Olympia’s charafter, however, with fuch un¬ bounded ambition, fuch an extravagant luft for pawer, Olyiryi*. and fuch an ambitious defire of wealth, and who had —— once pofiefled fo great an afcendency over fuch a man as Innocent, was not to be fo eafily put off. She was bafiifhed in 16 ^0; but in 1653, fhe aga>n afiumed the fupreme direftion of affairs juft as before her difgrace. She again accomplifhed the difgrace of Aftalli, and pro- cured the promotion of Azzolini to the office of fecre- tary of the briefs. In 1654, his holinefs refigned himfetf entirely into the hands of this afiuming woman; who, ob- ferving his infirmities daily increafing, redoubled her ra¬ pacity, difpofing of benefices to the higheft bidders in all parts of Italy. She was again, however, in hazard of be¬ ing difplaced by anew favourite, wz. the Cardinal de Retz: and had not the pope’s diffolution prevented it, it would in all probability quickly have taken place. Du - ring his laft illnefs he received nothing but from the hands of Donna Olympia, who was at great pains to prolong his life, watched continually at his bed-fide, and prevented the ambafladers or others from difturbjng him with difeourfes upon bufinefs. She is faid, du¬ ring the laft ten days of his life, when he continued without the ufe of reafon, to have atnafled about half a million of crowns. She did not find the fucceeding pope (Alexander \rII.) fo eafy to be played upon as his weak predeceflbr: a number of memorials were fent in againft her, and his holinefs was well difpofed to attend to them : he ordered her to retire from Rome, ami at the fame time began to examine witneffes re- fpedling her condudf. She was cut off, however, be¬ fore the trial was finifhed, by the plague, which, in 1636, afflidled Rome and its neighbourhood. Her eftate was not confifeated as was generally expe&ed ; and the prince Pamphilio was allowed to fucceed her. The pope only referved for his own relations about a million of crowns. Olympia (anc. geog.), with the furname Pi/atis (Strabo) ; fo called from the territory of Pifa in Elis; deferibed by Strabo, “ as the temple of Jupiter Olym- pius, before which ftands a grove of wild olive-trees, in which is the ftadium, or foot-courfe, fo called be- caufe the eighth part of a mile ; and by which the Alpheus, coming down from Arcadia, runs.” Olym¬ pia, however, was famous, not merely for the temple of Jupiter, but alfo for a temple of Juno, 63 feet long, with columns round it of the Doric order ; and a Metroum or temple of the mother of the gods, a large Doric edifice 5 with holy treafuries. Thefe, and the porticoes, a gymnafium, prytaneum, and many more buildings, chiefly in the enclofure, with the houfes of the priefts and other inhabitants, made Olympia no in- tonftderable place. The ftadium was in the grove of wild olive-trees, before the great temple ; and near it was the hippodrome or courfe for the races of horfes and chariots. The Alpheus flowed by from Arcadia with a copious and very pleafant ftream, which was re¬ ceived on the coaft by the Sicilian fea. The temple of Jupiter was of the Doric order, 68 feet high to the pediment, 95 wide, and 230 long ; the cell encompaffed with columns. It was erefted with the country-ftone; the roof, not of earth baked, but of Pentelic marble ; the flabs difpofed as tiles ; the way to it up a winding ftaircafe. The two pediments were enriched with fculpture; and one had over the centre a ftatue of Vi&ory gilded, and underneath a votive C c 2 buckler OltTirpia. O L Y [ 204 ] O L Y buckler of gold. At each corner was a gilded vatfe. Above the columns were fixed 2 t gilded bucklers, of¬ fered at the conclufion of the Achaean war by the Ro¬ man general Mummius. The gates in the two fronts 'were of brafs, and over them were carved the labours of Hercules. Within the cell were double colonnades, between which was the approach to the image. The Jupiter of Olympia was accounted alone fuffi- cient to immortalize its maker, Phidias. It was of ivoiy and gold, the head crowned with olive. In the right hand was a ilatue of Vidfory ; in the left a flowered fceptre, corr.pofed of various metals, on which was an eagle. The fandals were of gold, as alfo the veftment, which was curioufly embofled with lilies and animals. The throne was gold inlaid with ebony and ivory, and ftudded with jewels, intermixed with paint¬ ings and exquifite figures in relievo. The pillars be¬ tween the feet contributed to its fupport. Before it were walls, ferving as a fence, decorated principally with the exploits of Hercules; the portion oppofite to the door of a blue colour. It was the office of a fa¬ mily defcended from Phidias, called phtedrunta or the poltfhers, to keep the work bright- and clean. The veil or curtain was cloth rich with the purple dye of Phoenicia and with Affyriah embroidery, an offering of king Antiochus, and was let down from above by loofing the firings. The image impreffed on the fpec- tator an opinion that it was higher and wider than it meafured. Its magnitude was fuch, that though the temple was very large, the artifl feemed to have erred in the proportions. The god, fitting, nearly touched the ceiling with his head ; fuggefting an idea, that if he were to rife up, he would defiroy the roof. A part of the pavement before it was of black marble, en- clofed in a rim of Parian or white, where they poured oil to preferve the ivory. The altar of Jupiter Olympius was of great antiqui¬ ty, and compofed of affies from the thighs of the vic¬ tims, which were carried up and confumed on the top with wood of the white poplar-tree. The afhes alfo of the prytaneum, in which a perpetual fire was kept on a hearth, were removed annually on a fixed day, and fpread on it, being firft mingled with rvater from the Alpheus. The cement, it was affirmed, could be made with that fluid only ; and therefore this river wTas much refpefted, and efteemed the mofi; friendly of any to the god. On each fide of the altar were ftone-fteps. Itsheight was 22 feet. Girls and women, when allowed to be at Olympia, were fuffered to afcend the bafement, which was 125 feet in circumference. The people of Elis facrificed daily, and private perfons as often as they chofe. Religion flourifhed at Olympia, and many deities were worfliipped befides Jupiter. Paufanias has enu¬ merated above 60 altars of various fliapes and kinds. One of the unknown gods ftood by the great altar. The people of Elis offered on all thefe monthly ; lay¬ ing on them boughs of olive ; burning- incenfe, and wheat mixed with honey ; and pouring libations of fuch I’quors as the ritual prefcribed. At the latter ceremony fometimes a form of prayer was ufed, and they fung hymns compofed in the Doric dialed. Olympia was fituated on an eminence, between two mountains called OJfa and Olympus. Though its ancient jjplendor is gone, the place reminds the traveller of of what it once was. It is in the Marca, being now Olympiad, a fmall place called Longimco, 50 miles fouth of Le- t)mnpias. panto, in E. Long. 22. o. N. Lat- 37. 40. ""v" J OLYMPIAD, the fpace of four years, whereby the Greeks reckoned time.—The firft Olympiad fell, according to the accurate and learned computation of fome of the moderns, exactly 776 years before the firft; year of Chrift, or 775' before the year of his birth, in the year of the Julian period 393!^, and 22 years be¬ fore the budding of the city of Rome. The games were exhibited at the time of the full moon next after the fummer folft?ce ; therefore the Olympiads were of unequal length, becaufe the time of the full moon differs r 1 days every year, and for that reafon they fometimes began the next day after the folitice, and at other times four weeks after. The compu¬ tation by Olympiads ceafed, as fome fuppofe, after the 364th, in the year 440 of the Chriftian era. It was univerfally adopted not only by the Greeks, but by many of the neighbouring countries ; though ftill the Pythian games ferved as an epoch to the people of Delphi and to the Boeotians ; the Nemaean games to the Argives and Arcadians; and the Ifthmian to the Corinthians and the inhabitants of the Peloponnefiani ifthmus. To the Olympiads hiftory is much indebted. They have ferved to fix the time of many momen¬ tous events ; and indeed before this metho 1 of com¬ puting time was obferved, every page of hiftory is moftly fabulous, and filled with obfeurity and con- tradiftion, and no true chronological account can be properly eftablifhed and maintained with certainty. OLYMPIAS, a celebrated woman, who was daughter of a king of Epirus, and who married Philip king of Macedonia, by whom ffie had Alexander the Great. Pier haughtinefs, and more probably her infidelity, obliged Philip to repudiate her, and to marry Cleo¬ patra, the niece of King Attains. Olympias was fenfible of this injury, and Alexander ffiowed his dif- approbation of his father's meafures, by retiring from the court to his mother. The murder of Philip, which foon followed this difgrace, and which fome have attributed to the intrigues of Olympias, was produftive of the greateft extravagances. The queen paid the greateft honour to her hulband’s murderer. She gathered his mangled limbs, placed a crown of gold on his head, and laid his affies near thofe of Philip. The adminiftration of Alexander, who had fucceeded his father, was in fome inftances offenfive to, Olympias; but when the ambition of her fon was con¬ cerned, ffte did not fcruple to declare publicly that Alexander was not the fon of Philip, but that he was the offspring of an enormous ferpent who had fupeinaturally introduced himfelf into her bed. When Alexander was dead, Olympias feized the government of Macedonia ; and, to eftablifh her ufurpation, ffie cruelly put to death Aridseus, with his wife Eury- dice, as alfo Nicanor the brother of Caffander, witlr 100 leading men of Macedon,- who were inimical to her intereft. Such barbarities did not long remain unpuniffied: Caffander befieged her in Pydna, where ffie had retired w ith the remains of her family, and , fhe was obliged to furrender after an obftinate fiege. The conqueror ordered her to be accufed, and to be put to death. A body of 200 foldiers were ordered to put the bloody 'commands into execution, but the 4 fplen- o L Y [ 205 1 O L Y I * (lilies's 'Hi/lory of wircetf. Olympic, fplenc^or and majefty of the queen d!farmed their -courage; and fhe was at laft maffacred by thofe whom fhe had cruelly deprived of their children, about 316 years before the Chriftian era. OLYMPIC games, were folemn games among the ancient Greeks, fo called from Olympian Jupiter, to whom they were dedicated ; and by fome faid to he firft inftituted by him, after his viftory over the fons of Titan ; others afcribe their inflitation to Her¬ cules, not the fon of Alcmena, but one 6f much greater antiquity ; others to Pelops ; and others to Hercules the fon of Alcmena. By whomfoever they were inftituted, we know that, at a period rather early, they had fallen into difufe. The wars which prevail¬ ed among the Greeks, for a while, totally interrupted the religious ceremonies and exhibitions with which they had been accuftomed to honour the common gods and heroes; but the Olympic games were reftored on the following occafion. Amidft the calamities , which afHi&ed or threatened Peloponnefus, Iphitus, a defeendant of Oxylus, to whom the province of Eleia * had fallen in the general partition of the pe- ninfula, applied to the Delphic oracle. I he priefts of Apollo, ever difpofed to favour the views of kings and legiflators, anfwered agreeably to his wifh, that the feftivals anciently celebrated at Olympia, on the Alpheus, muft be renewed, and an armiftiee proclaim¬ ed for ail the ftates willing to partake of them, and dtfirous to avert the vengeance of heaven. Fortified by this authority, and aflifted by the advice of Lycur- gus, Iphitus took meafures, not only for reftoring the Olympic folemnity, but for rendering it perpetual. rl he injunction of the oracle was fpeedily diffufed through the remoteft parts of Greece by the nume¬ rous votaries who frequented the facred fhrine. I he armiftice was proclaimed in Pelopannefus, and prepa¬ rations were made in Eleia for exhibiting fhows and performing facrificts. In the heroic ages, feats of bodily ftrength and addrefs were deftined to the ho¬ nour of deceafed warriors ; hymns and facrifices were referved for the gods: but the fkxitle texture of Gre- cian fuperftition, eafily confounding the exprefiions of refpe&ful gratitude and pious veneration, enabled Iphitus to unite both in his new inftitution. The feftival, which lafted five days, began and ended with a facrifice to Olympian Jove. I he in¬ termediate time was chiefly filled up by the gymnaftic exercifes, in which all freemen of Grecian extraction were invited to contend, provided they had been born in lawful wedlock, and had lived untainted by any in¬ famous immoral flain. The preparation for this part of the entertainment was made in the gymnafium of Elis, a fpacious edifice, furrounded by a double range of pillars, with an open area in the middle. Ad¬ joining were various apartments, containing baths, and other conveniences for the combatants. I he neighbouring country was gradually adorned with por¬ ticoes, fliady walks and groves, interfperfed with feats and benches; the whole originally deftined to relieve the fatigues and anxiety of the candidates for Olym¬ pic fame ; and frequented, in later times, by fophifts and philofophefs, who were fond to contemplate wif- dom, and communicate knowledge, in thofe delight¬ ful retreats. The order of the athletic exercifes, or combats, was eftablilhed by Lycurgus, and corre- fponded almoft exacftly to that deferibed by Homer, in the 23d book of the Iliad, and eighth of the Odyffey. Iphitus,' we are told, appointed the other ceremonies and entertainments ; fettled the regular return of the feftival at the end of every fourth year, in the month of July ; and gave to the whole folemnity that form, and arrangement, which it prefervei with littie va¬ riation above a thoufand years ; a period exceeding the duration of the moft famous kingdoms and re¬ publics of antiquity. Among the benefadors of Oiy m - pia, at a much later period, was reckoned Herod, who was afterwards king of Judaea. Seeing, on his way to Rome, the games negleded or dwindling into infigniii- cance from the poverty of the Eleans, he difplayed vaft munificence as prefident, and provided an ample reve¬ nue for their future fupport and dignity. The care and management of the Olympics belong¬ ed for the moft part to the Eleans ; who on that ac¬ count enjoyed their poffellions without moleftation, or fear of war or violence. They appointed a certain number of judges, who were to take care that thofe who offered themfelves as competitors fhould perform their preparatory exercifes; and thefe judges, during the folemnity, fat naked, having before them a crown of vidory, formed of wild olive, which was prefented to whomfoever they adjudged it. Thofe who were conquerors wer'e called Olympionices, and were loaded with honours by their countrymen. At thefe games women were not allowed to be prefent; and if any wo¬ man was found, during the folemnity, to have palled the river Alpheus, fhe was to be thrown headlong from a rock. This, however, was fometimes neglect¬ ed ; for we find not only women prefent at the cele¬ bration, but alfo fome among the combatants, and fome rewarded with the crown. The preparations for thefe feftivals were great. No perfon was permit¬ ted to enter the lifts if he had not regularly exerciftd himftlf ten months before the celebration at the pu¬ blic gymnafium of Elis. No unfair dealings were al¬ lowed ; whoever attempted to bribe his adverfary was fubjeCted to a fevere fine ; and even the father and re¬ lations were obliged to fwear that they would have recourfe to no artifice which might decide the victory in favour of their friends. No criminals, nor fuch as were connected with impious and guilty perfons, were fuftered to prefent themfelves as combatants. The wrefilers were appointed by lot. Some little balls fu- perferibed with a letter were thrown into a filver urn, and fuch as drew the fame letter were obliged to contend one with the other. He who had an odd let¬ ter remained the laft; and he often had the advantage, as he was to encounter the laft who had obtained the fuperiority over his adverfary. In thefe games were exhibited running, leaping, wreftling, boxing, and the throwing of the quoit, which was called altogether *£.’toc3-xov, or quinquertium. Befides thefe, there wera horfe and chariot races, and alfo contentions in poetry, eloquence, and the fine arts. The only reward that the conqueror obtained was a crown of olive. This, as fome fuppofe, was in memory of the labours of Hercules; which were accompliihed for the univerfal good of mankind, and for which the hero claimed no other reward but the confcioufnefs of having been the friend of mankind. So fmall and trifling a reward ftimulated courage and virtue, and was the fource cf greater O L Y [ 206 T DMA prypatfr hoB(5?ur3 than the moft unhotmded treafures. ’“■’■"v The ftatues of the conquerors, called Oiympiomca, were ereded at Olympia in the fncred woo . [ 208 ] OMB Ombu ns one of the beft pofiible, and his temperance has al- of him who has fludied mankind, this animofity con- Ombre, —v ' Ways been highly extolled. tinned between the inhabitants of the two cities long v— OMB I, a city, of ancient Egypt, afterwards called after the crocodile and ichneumon had loft their di- Jrfinoe and Crocodilopolu, was the capital. of one of vinity. the nomes into which that country was divided, and The condu& of the Egyptian monarch was adon¬ is remarkable, in the annals of idolatry, for the ha- rably calculated for preventing the nation from com- tred of its inhabitants to the religion of their neigh- bining againft the government ; and it extended its hours the citizens of Tentyra. influence over the whole kingdom. Diodorus informs The genius of paganifm was fo complying with us, that he affigned to each nome an animal to won- refpect to the objects of religious worlhip, that al- ftnp, which was hated, killed, and fometimes fed up* though each nation, each city, and almoft every fa- on by the inhabitants of the neighbouring nome ; and mily, had its own tutelar god, we know not a Tingle we know upon higher authority than his, that the inftance, out of Egypt, of one tribe of pagans perfe- Ifraelites could not offer facrifices in Egypt, becaufe t cuting another for worftiipping gods different from the bullock was deemed facred over the whole coun- theirs. The Jews and Chriftians were indeed perfe- try. cuted by the Romans, not however for worfhipping OMBRE, a celebrated game at cards, borrowed the true Gofl, but becaufe, together with him, they from the Spaniards, ani played by two, by three, or would not worftiip Jupiter, Juno, and all the rabble by five perfons, but generally by three. When three of heathen divinities. play at this game, nine cards are dealt to each party ; The reafon of the almoft univerfal tolerance of ido- the whole ombre pack being only 40 ; becaufe the laters to one another, and of the intolerance of all to the Jews and Chriftians, is very obvious. Not a fingle .pagan, a very few pbilofophers perhaps excepted, ever thought of paying his adoration to the Supreme and felf-exiftent Being, but to inferior divinities, to whom it was fuppofed that the care of particular perfons, families, cities, and nations was configned by the God of the univerfe. The confequence was, that, as no perfon denied the divinity of his neighbour’s ob¬ ject of worfhip, an intercommunity of gods was every where admitted, and all joined occafionally in adoring the gods of the various nations. By the Jews and Chriftians this communion was rejedled as in the high- eft degree impious; and it could not well be mantain* ed between the citizens of Ombi and thofe of Ten¬ tyra. That brutes were Worfiupped in Egypt is univerfally known (See Polytheism) ; and Diodorus the Sici- * Prep. lliin informs us, in a paffage quoted by Eufebius*, Evang. that “ the cities and nomes of Egypt being at one P* 32- time prone to rebellion, and to enter into confpiracies Steph. ei. agajn{^ monarchical government, one of their moft politic kings contrived to introduce into the neigh¬ bouring nomes the worftiip of different animals; fo that while each reverenced the deity which itfelf held facred, and defpifed that which its neighbours had confecrated, they could hardly be brought to join cor¬ dially in one common defign to the diftmbance of the government.” In this diftributionof gods he conferred upon Ombi the crocodile, and uponTentyra the mortal enemy of that monfter, the ichneumon. The confequence of which was, that while the Ombites worfhipped the crocodile, the Tentyrites took every opportunity of flaughtering him, infomuch that, according to Strabo, the very voice of an inhabitant of Tentyra put the crocodile to flight. This, we confefs, is a very improbable faft; but it is certain that the mutual hatred of thofe cities, on account of their hoftile gods, rofe to fueh a height, that whenever the inhabitants of the one- were engaged in the more folemn rites of their reli¬ gion, thofe of the other were fure to embrace the opportunity of fetting fire to their houfes, and ren¬ dering them every injury in their power to inflift. And what may, to a fuperficial thinker, appear extra¬ ordinary, though it will excite no wonder in the bread N° 246, eights, nines, and tens are thrown out of the pack. There are two forts of counters for ftakes, the greater and the leffer; the laft having the fame proportion to the ether as a penny to a ihilling: of the greater coun¬ ters each man ftakes one for the game; and one of the leffer for paffmg for the hand, when eldeft, and for every card taken in. As to the order and value of the cards, the ace of fpades, called fpadillo, is always the higheft trump, in whatfoever fuit the trump be ; the manilk, or black duce, is the feeond ; and the hajlo, or ace of clubs, is always the third : the next in order is the king, the queen, the knave, the feven, the fix, the five, four, and three. Of the black there are 1 t x trumps ; of the red, 12. The leaft fmall cards of the red are always the beft, and the moft of the black ; except the duce and red feven, both of which are called the manilles, and are always fecond when the red is a trump. The red ace, when a trump, enters into the fourth place, and is called punto, otherwife it is only called an ace. The three principal cards arc called ma- tadores ; which have this privilege, that they are not obliged to attend an inferior trump when it leads; bat for want of a fmall trump, the perfon may renounce trumps, and play any other card ; and when thefe are all in the fame hand, the others pay three of the great¬ er counters a-piece ; and with thefe three for a foun¬ dation, he may count as many matadores as he has cards in an uninterrupted feries of trumps; for all which the others are to pay one counter a-piece. He who hath the firft hand is called ombre, and has his choice of playing the game, of naming the trump, and of ta¬ king in as many and as few cards as he pleafes ; and after him the fecond, &c. But if he does not name the trump before he looks on the cards he has taken in, any other may prevent him, by naming what trump he pleafes. He that has the firft hand fhould neither take in, nor play, unlefs he has at leaft three fare tricks in his hand : for, as he wins the game who wins moft; tricks, he that can win five of the nine has a fure game; which is alfo the cafe if he wins four, and can fo divide the tricks as that one perfon may win two, and the other three. If a perfon plays without difcarding or changing any cards, this is called playing fans prendre; and if another wins more tricks than he, he is faid to win co* dille. The over-fights in the courfe of the game arc called Ombre On elet. O M E f : cnlled beajls. And if tfie ombre wins all the nine tricks, it is called winning the vole. In ombre by five, which many-j on account of its not requiring fo clofe an attention, prefer to that by three, only eight cards a-piece are dealt ; and five tricks muft be won, otherwife the ombre is beafted. Here the perfon who undertakes the game, after naming the trump, calls a king to his affiftance; upon which the perfon in whofe hand the king is, without difcovering himfelf, is to affift him as a partner, and to fhare his fate. If, between both, they can make five tricks, the ombre wins two counters, and the auxi¬ liary king only one; but when the counters are even, they divide them equally. If the ombre venture the game without calling in any king, this too is called playing fans prendre; in which cafe the other four are all againft him, and he muft win five tricks alone, or be beafted. The reft is much the fame as by three. Ombre de foleit, “ Shadow of the fun,” in heral¬ dry, is when the fun is borne in armory, f® as that the eyes, nofe, and mouth, which at other times are re- prefented, do not appear; and the colouring is thin, fo that the field can appear through it. OMBRIA, the ancient name of a province of Italy, in the territory of the pope, now called Spoletto and Perugia. OMBRO, or Lombro, a town of Italy, in the duchy of Tufcany, and territory of the Siennois, fituated near the Tufcan fea, a little fouth of the lake of Caftiglione, 45 miles fouth-weft of Sienna. OMBROMETER, a machine to meafure the quantity of rain that falls. We have the defcription and fign of one in Phil. Tranf. n° p. 12. It confifts of a tin-funnel, whofe furface is an inch fquare, with a flat board, and a glafs-tube fet into the middle of it in a groove. The rife of the water in the tube, whofe capacity at different times muft be mea- fiired and marked, fhows the quantity of rain that has fallen. OMELET, or Amlet, a kind £>f pancake orfrl- caffee of egg?, with other ingredients, very ufual in Spain and France. It may be made as follows : The eggs being beaten, are to be feafoned with fait and pepper, and then fried in butter made boiling hot; this done, gravy is to be poured on, and the whole ftewed with chives and parfley fkred fmall : when ore fide is fried enough, it is to be turned on the other. Vol. XIII. Part i. 109 1 O M E OMEN, is a word which, in its proper fenfe, flgni- fies a fign or indication of fome future event taken' from the language of a perfon fpeaking without any intent to prophecy. Pleoce Tully fays, “ Pythago- rei non folum voces deorUm obfervarunt, fed etiam ho- minum, quse vocent omina“the Pythagoreans at¬ tend to the difeourfe not only of gods, but alfo of men, which they call omem.” This fort of omen was fuppofed to depend much upon the will of the perfon concerned in the event; whence the phrafes accepit omen, artipuit omen. Such were the original omens ; but they were afterwards derived1 from things as well as from words. Thus Paterculus, fpeaking of the head of Sulpicius on the roftrum, fays, it was vtlut omen im* minentis proferiptionis, “ the omen of an impending pro ] feription.” Suetonius fays of Auguftus, that he be¬ lieved implicitly in certain omens; and that,yf/wa/it? Jibi calceus perperam, ac finijler pro dextero induceretur, ut dirum, “ if his ftioes were improperly put on in the morning, efpecially if the left fhoe was put upon his right foot, he held it for a bad omen.,> Omen was ufed in a ftill larger fenfe, to fignify an augury ; as in the following line of Tully ; “ Sic aquike clarum fir- mavit Jupiter “thus Jove confirmed the bright omen of the eagle.” It was laftly ufed, in the moft generic fenfe of all, for a portent or prodigy ; as in the third book of the JEneid, where a myrtle torn up by Atneas dropped blood. Upon this appearance, fays the hero, Mihi frigidus horror Omen. Membra quatit, gelidufque cbit formidine fanguis. And the fame thing being repeated upon his breaking a branch from another tree, he prayed to the gods to avert the omen. Multa movens animo Nymphas venerabar agreftes, Gradivumque patrem, Geticis qui prafidet arvis. Rife fecundarent vifus, ome«que levarent (a). Thefe portentous or fupernatural omens Were either external or internal. Of the former fort were thofe ftiow- ers of blood fo frequently occurring in the Roman hif- tory, which were much of the fame nature with this adventure of iEneas, which he calls monstra drum. Of the fecond fort were thofe hidden confterna- tions, which, feizing upon men without any vifible caufe, were imputed to the agency of the god Pan, and hence called panic fears. But indeed there was D d (a) Inftead of tranfiating thefe Ihort quotations, we (hall here give Dry den’s verfion of the whole of this portentous adventure, as we are perfuaded that the mere Englilh reader, who alone can wilh for a tranfiation, will be glad to have the fulleft account of the bleeding myrtle, together with its effedls on the mind of the hero. It is as follows : Not far, a rifing hillock flood in view; Sharp myrtles on the fides and corners grew. There, while I went to crop the fylvan feenes, And (hade our altar with their leafy greens, I pull’d a plant (with horror I relate A prodigy fo ftrange, and full of fate): The rooted fibres rofe ; and from the wound Black bloody drops diftill’d upon the ground. Mute and amaz’d, my hair with terror flood-; Tear fhrunk my fiirews, and congeal’d my blood. Mann’d once again, another plant I try; That other gulh’d with the fame fanguine dye. Then, fearing guilt for fome offence unknown, With prayers and vows the Dryads I atone. With all the fitters of the woods, and moft ' The God of arms, who rules the Thracian coaft r' hat they, or he, thefe omens would avert, Releafe our fears, and better figns impart* Qmeu. O M E [21 har^iy^any tiling, however trivial, from which the an¬ cients did not draw omens. That it fhould have been thought a direful omen when any thing befel the tem¬ ples, altars, or ftatues of the gods, need excite no wonder ; but that the meeting of a eunuch, a negro, a bitch with whelps, or a fnake lying in the road, fhould have been looked upon as portending bad for¬ tune is a deplorable inftance of human weaknefs, and of the pernicious influence of fuperftition on the mind. • j It is more than probable that this pra&icc of king ordinary events ominous of good or bad for¬ tune took its rife in Egypt, the parent country of al- moft every fuperftition of paganifm ; but wherever it may have arifen, it fpreads itfelf over the whole inha¬ bited globe, and at this day prevails in a greater or lefs degree among the vulgar of ail nations. In England, it is reckoned a good omen, or a fign of future happinefs, if the fun ftiines on a couple co¬ ming out of the chuich after having been married. It is alfo efteemed a good fign if it rains whilit a oorpfe is burying: Ha^py is the bride that the fun ftrines on ‘r Happy is the corpfe that the rain rains on. To break a looking-glafs is extremely unlucky ; the party to whom it belongs will lofe his beft friend. If, going a journey on bufinefs, a fow crofs the roadr you will probaoly meet with a difappointment, if not a bodily accident, before you return home. To avert this, you muft endeavour to prevent her crofling you ; and if that cannot be done, you muft ride round on frefli ground. If the fow is attended with her lit¬ ter of" pigs, it is lucky, and denotes a fuccefeful jour¬ ney. It is unlucky to fee, firft one magpye, and then more ; but to fee two, denotes marriage or merriment; three, a fuccefsfu'rjourney ; four, an unexpe&ed piece of good news ; fve, you will fhortly be in a great com¬ pany. To kill a magpye, will certainly be puniflied withTome terrible misfortune. If, in a family, the youngeft daughter fhould be married before her elder Afters, they muft all dance at her wedding without ftioes : this will counteract their ill luck, and procure them hufbands. If you meet a funeral proceflion, or one palFes by you, always take off your hatthis keeps all evil fpi- rits attending the body in good humour. If, in eating, you mifs your mouth, and the victuals fall, it is very unlucky, and denotes approaching fick- nefs. It is lucky to put on a Hocking the wrong fide out¬ wards : changing it, alters the luck. When a perfon goes out to tranfaCt any important bufinefs, it is lucky to throw an old flioe after him. It is unlucky to prefent a knife, feiffars, razor, or any fharp or cutting inftrument, to one’s miftrefs or friend, as they are apt to cut love and friendlhip. To avoid the ill effeCts of this, a pin, a farthing, or feme trifling recompenfe, muft be taken. To find a knife or razor, denotes ill luck and difappointment to the party. In theHighlands of Scotland, it is thought unlucky if a perfon fetting out upon a journey ftumble over o 1 O M E the threfhold, or be obliged to return for any thing Omen, forgotten. 'H a fportfman fee any perfon ftepping » ' L*‘ over his gun or filhing-rod, he expeCts but little fuc- cefs in that day’s diverfion. Sneezing is alfo deemed ominous. If one fneeze when making a bed, a little of the ftraw or heath is taken out and thrown into the fire, that nothing may difturb the reft of the perfon who is to fleep in the bed. Among the fame people, fuccefs in any enterprize is believed to depend greatly upon the firft creature that prefents itfelf after the en¬ terprize is undertaken. Thus, upon going to Ihoot, it is reckoned lucky to meet a horfe, but very unfor¬ tunate to fee a hare, if file efcape ; and upon meeting any creature deemed unlucky, the beft means of avert¬ ing the omen is to.roll a ftone towards it. The Greeks attributed the fame efficacy to. the rolling of a ftone, though they greatly preferred killing the ominous ani¬ mal, that the evil portended might fall' on its own head *. * See Ptte The motions and appearances of the clouds weret!r * not long ago confidered as certain figns by which Ikilful Highlander might attain to the knowledge ofk* P’ futurity. On the evening before nenu-year’s-day^ if at black cloud appeared in any part qf the horizon, it was thought to prognofticate a plague, a famine, or the death of feme great man in that p?rt of the country over which it ftiould appear to fit; and in order to afeertain the place threatened by the omen, the mo¬ tions of this cloud were often watched through the whole night, if it happened to continue fo long vifible above the horizon. By the believers in this fuperftition there are days, as well as words-and events, which are deemed omin-- ous of good or bad fortune. The firft day of every quarter, midfummer, and new-year’s-day, are reckon¬ ed the moll fortunate days "in the year for accompliih- ing any defign. In the Ifle of Mull, ploughing, fow- ing, and reaping, are always begun on Tuefday, though the moft favourable weather for thefe purpofes be in,, this way frequently loft. That day of the week on which, the third of May falls, is deemed unlucky, throughout the whole year. In Morven, none will, upon any account dig peat or turf for fuel on Friday; and it is reckoned unlucky to number the people or. cattle belonging to any family, and doubly fo if the^ number be taken on Friday. The age of the moon is alf«, much attended to by the vulgar Highlanders. It is alleged, that during the increafe things have ^ tendency to grow and ftick together; and hence, in the Ifle of Sky, fences, which are there made of turf, are built only at that time; whilft turf or peats for- fuel are never, even in the moft favourable weather, either made or Hacked up but while the moon is in. its wane. An opinion, prevails in fome places, that if a houfe take fire during the increafe of the moon* the family to which, it belongs will profper in the world but that if the fire happen while the moon is in the decreafe, the family will from that time de¬ cline in its circumftances, and fink into poverty. In attributing fuch influence to the moon, the fuperftitious Highlanders have the honour to agree with the philofophic Virgil, who in his Georgies gives the following fage inftru&ious to the hufbaud- man: ''Omen. OME [211] OMO Ipfa dies alios alio dedit ordine"'Luna IJ Felices operum. Quint am fuve : Septima pojl decimam felix et ponerc vitem. Ft prenfos domitare bows, et licia tela; Addere: nona fugae melior, contraria furtis. The lucky days in each revolving moon For labour choofe : the fifth be fure to Ihun. * * * % The feventh is next the tenth, the heft to join Young oxen to the yoke, and plant the vine. Then weavers ftreteh your ftays upon the waft: The ninth is good for travel, bad for theft. Dryden. From this coincidence of the fuperftition of the Homan poet with that of the natives of Mull and Morven, we are ftrongly inclined to adopt the hypo- thefis of the gentleman who favoured us with this ac¬ curate account of Highland omens. He juftly obferves, that this fuperfiitious pradbee of auguring good or ill from trifling events, and from the particular phafes of the moon, has no connexion whatever with popifh prieftcraft: he fhows that the Romifh clergy, even in the darkeft age, were at pains to eradicate it as idle and impious ; and he therefore infers, that it muft be a relick of Hruidifm handed down by tradition from an era prior to the introduction of Chriftianity into the Highlands and ifles of Scotland. That the Druids were acquainted with the particular do&rines of Pythagoras has been fhown elfewhere (fee Druids); that Virgil was no flranger to the Pythagorean philo- fophy is known to every fcholar 5 that Pythagoras and his followers were addifted to the dotages of Magic has been made apparent in that article; and therefore it appears to us probable at lead, that the attention paid to pretended omens, not only in the highlands, but alfo in the low country of Scotland, and indeed among the vulgar in every country of Europe, is a rem¬ nant of one of the many fuperftitions which the Druids impofed upon their deluded followers. That it is con¬ trary to every principle of found philofophy, all philo- fophers will readily acknowledge ; and whoever has fludied the writings of St Paul muft be convinced that it is inconfiftent with the fpirit of genuine Chriftia- \ nity. OMENTUM, or Epiloon, the Ca^l, in anatomy, a membranaceous part, ufually furniihed with a large quantity of fat ; being placed under the peritonasum, and immediately above the inteftines. See Anatomy, 90. ’ OMER, in Jewifh antiquity. See Corus. St OMER’s, a ftiong, fortified, large, and popu¬ lous town of France, in Artois and capital of a con- iiderable bailiwick, with a caftle and a biihop’s fee. It is a fortrefs of confiderable importance, and furrounded on one fide with a large morals ; and about it there are many fluices, which ferve to carry the water off when it is overflowed; and in the midft of the morafs there is a fort of floating ifiands covered with verdure and trees. 'I’he cathedral is a handfome ftrutlure ; and there are other fine buildings, with a rich Benedi&ine abbey. The French became matters of this place in 1679. It is feated on the river Aa, and on the fide of a hill, eight miles north-weft of Aire, and 135 north of Paris. E. Omoa. Long. 2. 20. N. Lat. 54. 45. '—v'— OMOA, a Spaniih town and fortification on the fouth fide of the bay of F|pnduras, N. Lat. 15. 50. W. Long. 89. 50. from London. It is the key to the bay ; and fuch is the depth of the water, that imps of any burden may ride in the harbour with fafety. It is a place of the utmoft importance to Spain, as the regitter fhips to and from Guatimala are fent to it in the time of war. The town was firft eltablifhed in 1751, under the command of Don Jofeph Antonio de Palmo. At that period the inhabitants were about 20 white men, 60 mulattoes and free negroes, and 200 Haves to tne king of Spain ; and the military force con¬ fided of about 30 foldiers, befides officers. The fort was originally compofed of fand confined in boarded coffers, and faced with half-burnt bricks. It was de¬ fended by 12 fine brafs 24-pounders mounted, four or five iron guns of different bores, and fame field- pieces. The Spaniards, fenfible of the importance of the place, afterwards fortified it at an incredible ex¬ pence, the ftone of which the walls are built having been raifed from the fea, and brought from the di- ftance of 20 leagues. The outworks were not com- pletdy finifhed in the year 1779, though ioco men had then been employed upon them for 20 years. Towards the end of that year an expedition was un¬ dertaken againtt this fortrefs, in confequence of one formed try the Spaniards againft the Britiffi log-wood cutters in the bay of Honduras and on the Mofquito more. The latter, finding themfelves hard preffed by their enemies, applied to general Dulling governor of Jamaica far affiftance ; who accordingly fent a detach- ment to their relief under Captain Dalrymple, with neceffary fupphes of arms, ammunition, and artillery. t^ei^ 3rnvaU however, the Spaniards had taken poffeffion of St George’s Key the chief fettlement of the Bntiffi in thefe parts, which they plundered, and took a number of prifoners ; but thofe who efcaped* being joined by a body of their countrymen, retook it, and forced the enemy to retire. In the mean time Captam Dalrymple, who had been informed of the lo sof the place, was battening to the relief of the inhabitants, and in his way fell in with Admiral Par- ker, who was in queft of fome register fhips ; but which, retreating into the harbour of Omoa, were too itrongly protefted by the fort there to be attacked by lea. As the Spaniards, however, had now been com¬ pelled to abandon St George’s Key, it was propofed to unite the Bmifli forces by fea and land, and to at¬ tempt the con queft of this fortrefs. As the force un¬ der Captain Dalrymple was too inconfiderable to at¬ tempt thejort by land, it was augmented by the ma¬ rines of the fquadron and a ttrong party of the fettlers^ though, after all, it did not exceed the num¬ ber of the garrifon who oppofed them. The troops were landed at about nine miles diftance from the fort in the dufk of the evening, with a de- fign to march direaiy forward, in order to furprife and carry it by efealade in the night-time. No roads, however, being found, they were obliged to explore their way through narrow foot-paths, moraffes, and over mountains fo befet with precipices, that they were obliged, in order to avoid them, to make ufe of D d 2 lights O M O [2' Orroa. lights made of the cabbage-tree. In coafequence of thefe impediments they were yet at a confiderable didance from the fort, when the approach of day difeovered them to the enemy. An engagement enfued, in which the Spaniards were quietly routed and driven into the town ; from whence as they continued to fire upon the Britifh, it was fouud neceflary to fet fire to it, tho’ very much againft the inclination of the affanants. In the mean time the fquadron took the opportu¬ nity, while the town was m flames, to come into the bay, and approach the fort with an intention to batter it ; but the garrifon returned their tire fo brifidy, that no irnpreflion could be made by that of the fquadron, which was detained by want of wind from approach¬ ing fufficiently near. The troops then, being mafters of the ground adjacent to the fort, ere&ed feveral batteries in fueh fituations as were moll proper for an¬ noying it ; but though they carried on their opera¬ tions with great vigour, it was ftill found that heavier artillery than any they pofleffed would , be requifite, the walls being no lefs than 18 feet in thicknefs ; in confequence of which they refolved ilill to attempt the place by efcalade. „ , The attempt was made on the 2 f ft of October, early in the m@rmng. The troops entered the ditch, which foitunately for them happened to be dry, and fixed their fealing ladders .againft the walls, which were near 30 feet high. Two feamen mounted firft ; and, with admirable courage and prefence of mind, ftood by the ladder which they had mounted, to guaid it till others afeended ; and boldly prefented their pieces againft a large party drawn up to receive them, though they prudently retained their fire till their comrades came ^The fquadron, now drawing near, kept up a heavy and continual fire upon the fort, wdiile the Spaniards Were ftruck with fueh furprife at the exceffive celerity and boldnefs of the afiailants, that they remained mo- tionlefs and unable to oppofe their enemies, notwith- ftanding the exhortation and example of their officers, 'from this panic they never recovered ; and while the feamen and foldiers continued to fcale the walls with amazing quicknefs, the Spaniards never made any ef¬ fort to defend themfelves. About 100 of them efca- ped over the walls on the oppolite fide of the fort; the remainder furrendered at ditcretion. The whole of this tranfaeftion refie&ed the higheft luftre both on the conduft and courage of the Britifli; and an inftance of heroifm is related in a Britifli failor to which hiftory affords nothing fuperior. This man, having fcaled the walls, had armed himfelf with a cut- lafs in each hand. Thus armed, he met with a Spa- nilh officerunarmed, and juft roufed from fleep. The generous tar fcorned to take advantage of his condition, — and therefore prefented him with one of his own cut- laffes, faying, “ You are now on a footing with me l” The officer, however, was too much ftruck with ad¬ miration at his conduct to accept the offer, and took care to make the circumftance fufficiently known.— The value of the booty taken on this occafion amounted to three millions of dollars ; but the lofs moft fenfibly felt by the Spaniards was that of 250 quintals of quick- filver, a commodity indifpenfibly neceffary in extraft- ing the precious metals from their ores. They offered therefore to rar.fom it at any price ; but though the 2 ] O M O retention of it was far from affording a profic equa. to that offered by the Spaniards, the Britnh commanders abfolutely refufed to part with it, on account of the ad- ___ vantages the enemy would derive from having the metal in their poffeffion. For the fame reafon they refufed to accept of any ranfom for the fort, though the governor offered to lay down 300,000 dollars for it. The Spa- nifh military and the inhabitants were treated with the utmoft humanity ; their perfonal effeils remaining un¬ touched : and this generoftty muft have appeared to greater advantage, when contrafted with the behavi¬ our of their own countrymen at Honduras, where the Britifli were treated with remarkable feverity. The church-plate and ornaments were reftored, on condi¬ tion that the terms of capitulation fhould be faithruhy a fhort time, however, it appeared that it would have been better to have accepted of a ranfom for the fort, as from circumftances at that time it could not be retained in the .poffeffion of. Britain. A garriion was indeed left for its defence on the departure of the Britifli fquadron ; but as it was very inconflderable, on account of the fmall number of men that could be fea¬ red, the Spaniards quickly determined to maice an at¬ tempt to regain the fort. For this purpofe a body of 2000 men were collected, who invefted it on the 25th of November. The Britifli defended it with the ut¬ moft bravery; keeping up a conftant fire on the ene¬ my, and obliging them to retire for fhelter, and take up their quarters behind a hill. Here they made pi se¬ parations for an affault, in which their numbers left the fuccefs, as they fuppofed, by no means dubious. The garnfonwas therefore furomonedtofurrender, with, a ptomife of the honours of war and a fafe convey¬ ance to Great Britain, denouncing at the fame time the utmoft vengeance in.cale of a relufal ; which being refufed, the neceffary preparations were made for au efcalade. The condition of the garrifon was now luch as could afford very little hope oi being able to make any ef¬ fectual reliftance. They were but 85 in number, moft of whom were become incapable of duty either from illnefs or excefiive fatigue. They were now alfo ob¬ liged to make one centinel anfwer for five, by fhifting his place, and challenging as many times There was no furgeon to attend the fick and wounded ; nor had they even any water but what came from a floop of war that lay abreaft of the fort. In this defpe- rate fituation, they refolved, notwithftanding the me¬ naces of the Spanilh commander, to render the place as unferviceable as they could. For this purpofe they fpiked up all the guns ; deftroying the ftores and am¬ munition that could not be earned off: they even locked the gates of the fort, after which they embarked without the lofs of a fingle man. All this was per¬ formed in defiance of the large force that befieged them ; and the exploit, when duly confidered, muft appear not lefs a matter of aftonifliment than the ex¬ traordinary manner in which the fort had been taken. The officer who commanded in this remarkable rep eat was Captain Hulke of the navy. OMOPHAGIA, an ancient Greek feflival, in ho¬ nour of Bacchus, furnamed Omophagos, i. e. eater of raw-flefh. This feftival was obferved in the fame man. ner with the other feftivals of Bacchus, in which they caun- Omoa, Omoplu- Ompha- cine-oi' il Dciphalea. G M P [2 counterfeited madnefs. What was peculiar to it, was, that the worfhippers ufed to eat the entrails of goats, raw and bloody, in imitation of the god, who was fup- pofed to do the fame tiling. OMPIIACINE-'ml, a vifcous brown juice ex¬ tracted from green olives. With tnis oil the ancient Jtllets, when going to wreftle, anointed themfelves ; and when that gymnaftic exereife was over, they roll¬ ed themfelves in the fand, which, mixing with the oil and fweat on their bodies, conftituted \\xtfirigmtnta fo highly efteemed in the cure of feveral difeafes. This precious medicine was carefully feraped off the body of the Athlet w’ith a kind of inftrument fomething like a comb, which was called jlrigihs ; and inch was the demand for the ferapings, that they were a very lucrative article of trade. OMPHALE (fab.hiff.), a queen of Lydia, daughter of Jardanus. She married Tmolus, who at his death left her mi it refs of his kingdom. Omphale had Ijeen in¬ formed of the great exploits of Hercules, and wiihed to fee fo illuftrious a hero. Her wiflr w^as foon gra- t.fied. After the murder of Eurytus, Hercules fell lick, and was ordered to be fold as a Have, that he might recover his health and the right ufe of his fen- Mercury was commiffioned to fell him, and Om¬ phale bought him, and reftored him to liberty. The hero became enamoured of his mi ft refs, and the queen favoured his pafilon, and had a fon by him, whom fame call Agelaus, and others Lamon. From this fon were defeended Gyges and Crosfus ; but this opinion is dif¬ ferent from the account which makes thefe Lydian monarchs fpring from Alcaeus, a fon of Hercules, by one of the female fervants of Omphale. Hercules is reprefented by the poets as fo defperately enamoured of the queen, that, to conciliate her efteem,hefpins by her fide among her women, while Ihe covers herfelf with the lion’s fkin, and arms herfelf with the dub of the held, and often ftrikes him wjth her fandals, for the uncouih manner with which he holds the diftaff, &c. Their fondntfs was mutual. As they once tra¬ velled together, they came to a grotto on mount Tmo¬ lus, where the queen dreffed herfelf in the habit of her lover, and obliged him to appear in a female garment. After they had flipped, they both retired to reft in different rooms, as a facrifice on the morrow to Bac¬ chus required. In the night Faun us, or rather Pan, who was enamoured of Omphale, introduced himfelf into the cave. He went to the bed of the queen, bat the lion’s fkin perfuaded him that it was the drefs of Hercules ; and therefore he repaired to the bed of Hercules, in hopes to find there the objed of his af- fe&ions. The female drefs of Hercules deceived him, and he laid himfelf down by his fide. The hero was awakened, and kicked the intruder into the middle of the cave. The noife awoke Omphale, and Faunus was difeovered 'lying on the ground, greatly difappointed and afhamed. OMPHALE A, in botany: A genus of the trian- dria order, belonging to the monoecia clais ot plants ; and in the natural method ranking with thofe of which the order is doubtful. The male calyx is tetraphyl- lous ; there is no corolla ; the receptacle, into which the antherae are funk, is ovate. The female calyx and corolla are as in the male ; the ftigma trifid ; the cap- fule carnous and uilocular, with one feed- 13 1 O N A OMPHALO-mesenteric, in anatomy. All fee- Ompha:o- tufes are wrapped up in at leaft two coats or mem- “Enteric branes ; moft of them have a tnird, called allantoidest onania. or urinary, Some, as the dog, cat, hare, &c. have a fourth, which has two blood-veffels, viz. a vein and an ar¬ tery, called omphalo-mefenterics, becaufe paffing along the firing' to the navel, and terminating in the meien- tery. OMRAH, a man of the firft rank in the Mogul empire ; a nobleman. It is the plural of the Arabic ameer. ON, (anc. geog.), a city of Egypt facred to the fun, and by the Greeks, on 'that account, called Helio¬ polis. (See Heliopolis.) It was remarkable for the wifdom and learning of its priefthood, and for the fpacious buildings in which they cultivated the liu- dies of philofophy and aftronomy. i he priefts of On were efteemed more noble than all the other priefts of Egypt. They were always privy counfellors and mi- nifters of ftate ; and therefore, when Pharaoh refolved to make Jofeph prime minifter, he very wifely gave him in marriage a daughter of the prieft of Ov, there¬ by incorporating him into the moft venerable caff in Egypt. Bifhop Warburton thinks that the fuperior nobility of the priefts of Oh was chiefly owing to their high antiquity and great learning. Chat they were much, given to the ftudy of aftronomy, we know from the teftimany of Strabo ; and indeed nothing is more probable than that they fliould be attached to the ftu¬ dy of that fyftem over which their god, the Sun, pre- flded, not on!y in his moral but alfo in his natural ca¬ pacity. The learned prelate affirms, that “ whether they received the doflrine from original tradition, or invented it at hazard (which laft fuppofition he thinks more probable, though v/e are of a very different opi¬ nion), it is certain they taught that the Sun is in the centre of its fyftem, and that all the other bodies move round it in perpetual revolutions. This noble theory '(he continues) came with the reft of the Egyptian learn¬ ing into Greece (being brought thither by Pytha-_ goras,u'ho received it from Gdnuphis*, a prieft; of On); ^ ^ and after having given the molt diftinguifhed lull re j- to his fchool, it funk into obfeurity, and fuffered ap. (,32. total eclipfe throughout a long fucceffion of learned Steph. eosr “ Of the duty and virtues of the general of an army which has been tranftated into Latin, Italian, Spanifh, and French. The time when he lived is not precifely known : but is imagined to be in the reign of the emperor Clau¬ dius ONOSMA, in botany: A genus of the monogynta order, belonging to the pcntandria clafs of plants ; and in the natural method ranking under the 41ft order, sffperfo/ia. The corolla is campanulated, with the throat pervious : there are four feeds. GMT A RIO, a lake of North America, in the coun¬ try of the Iroquois, 1S0 miles in length and 60 in breadth. There are many rivers that run into it ; and from it the great river St Laurence proceeds. It communicates with lake Erie by a river 33 miles in length, in which is the remarkable cataraft of Nia¬ gara. ONTOLOGY. See Metaphysics, n° 3. ONUPHR1US panvinus a learned Italian, of the order of hermits of St Auguftine, was born of a noble family at Verona, in 1 ^29; and, being trained to lite¬ rature, became fo indefatigable in his ftudies, that he fpent whole days and nights in reading the ancients : which made Manutius ftyle himHelluoSlntiquitatis. His fhft performance was A Chronicle of Popes and Car¬ dinals, which was printed without his knowledge at Venice in l$57; and fome time after, more corre&ly by himfelf. He afterwards continued Platina’s Lives of the Popes, from Sextus IV to Pius V. and fubjoin- ed annotations to the lives Platina had written. He alfo wrote four pieces upon Roman Antiquities, which are printed in Grtevius’s Colledlion. He died in his 39th year, in 1 568. ONYCOMANCY, or, as fome write it, Onyman- cy; a kind of divination by means of the nails of the fingers. The word is formed from the Greek “ nail,” and “ divination.” The ancient praftice was to rub the nails of a youth with oil and foot, or wax ; and to hold up the nails thus fmeared againft the fun.—Upon them were fup- pofed to appear figures or charafters, which Ihowed the thing required. ONYX, in natural hiftory, one of the femipellucid gems, with varioufly coloured zones, but none red ; being compofed of cryftal, debafcd by a fmall admix¬ ture of earth ; and made up either of a number of fiat plates, or of a feries of coats furrounding a central nucleus, and fcparated from each other by veins of a different colour, refemhling zones or belts. We have four fpecies of this gem. 1. A bluifti- white one, with broad white zones. 2. A very pure onyx, with fnow-white veins 3. The jafponyx, or horny-onyx, with green zones. 4. The brown onyx, with bluifh white zones. The ancients attributed wonderful properties to the onyx, and imagined that if w orn on the finger it adfed as a cardiac ; they have alfo recommended it as an aftringent; but at prefent no regard is paid to it. Vol. XIII. Part I. Oo t. 17 I O O R The word in the Greek language fignifies nail; the O matafhka poets making this ftone to have been formed by the Parc® from a piece of Venus’s nails, cut off by Cupid with one of his arrows. OONALASHKA, one of the Hands of the Nor¬ thern Archipelago, vifited by Captain Cook in his laft voyage. The native inhabitants of this Hand are, to all appearances, a very peaceable people, having been much poliftied by the Ruffians, who now keep them in a ftate of fubjedion. As the Hand furnifhes them with fubfiftence", fo it does, in fome meafure, with clothing, which is chiefiy compofed of /kins. The upper garment, which is made like a waggoner’s frock, reaches down to the knees. Befides this, they wear a waiftcoat or two, a pair of breeches, a fur cap, and a pair of boots, the legs of which are formed of fome kind of ftrong gut; but the foies and upper-lea¬ thers are of Ruffia leather Fifit and other fea ani¬ mals, birds, roots, berries, and even fea-weed, compofe their food. They dry quantities of fifh during the fummer, which they lay up in fmall huts for their ufe in winter. They did not appear to be very defirous of iron, nor to want any other inftrument, except fewing needles, their own being formed of bone. With theft they few their canoes, and make their clothes, and alfo work very curious embroidery. They ufe, inftead of thread, the fibres of planes, which they fplit to the thicknefs required. All fewing is per- formedbythe females,who are (hoe-makers,tailors, and boat-builders. They manufacture mats and bafkets of grafs, which are both ftrong and beautiful. ( here is indeed a neatnefs and perfection in moil of their works, that (hows they are deficient neither in inge¬ nuity nor perfeverance. Though the climate is fometimes fevere, Captain Cook did not obferve a fire-place in any of their ha¬ bitations. They are lighted as well as heated by lamps ; which, though (imple, effectually anfwer the purpofe for which they are intended. They confift of a flat ftone, hollowed on one fide like a plate ; in the hollow part they put the oil, mixed with fome dry grafs, which ferves for a wick. Both fexes often warm themfelves over one of thefe lamps, by placing it between their legs, under their garments, and fit¬ ting thus over it for feveral minutes. E. Long. 139. 29. N. Lat 53. 5. OONELLA, OONEMAH, two Hands of the fame Archipelago with Oonalafhka ; the former of which lies to the nerth-eaft of that Hand, being fe- parated from it by a navigable ftrait ; the other is more to the weftward, being in E. Long. 192. 30. and N. Lat. 54. 30. The circumference of Oonella is about feven leagues, and the produce of both much the fame with that of Oonalalhka. OORT (Adam Van), born at Antwerp in 1 tyy, was the fon of LambertVanOort, a p -inter of confide- rable reputation for perfpeefive and architecture. Adam was inftruCled in the art by his father, and afforded fufficicnt proofs of his having an enlarged genius ; fo that he foon rofe into efteem, not only as a painter of hiftory, but as an able artift in landfcape and portrait. But the greateft honour of Van Oort proceeded from his having been the firft inftrudor of Rubens, whofe works have eternized his matter’s memory, along with his own. E e Naturally o o s r 21: Naturally he was of a rough and difagreeable tem¬ per, which occafioned him to lofe the love of his dif- ciplcs and his friends; and among the number, he to¬ tally forfeited the efleem of Rubens, his beft pupil. Jordaens was the only perfon who accommodated hun- felf to the favage humour of his matter; but it appears probable, that he only condefcended to endure his morofe behaviour, out of affedtion to the daughter of Van Oort, to whom Jordaens was afterwards mar¬ ried. In his ftyle of painting, however, he negledted na¬ ture, and was entirely a mannerift ; nor did he feem to have any regard to painting as a fine art, but merely as an art that might be the means of making him rich. In his beft time, his compofition was agree¬ able and his. defign corredl; but in his latter time, his woiks had nothing to recommend them, except the freedom of handling, and the goodnefs of their colouring; yet, with all his defedts, he was accounted a good painter. Rubens ufed to fay. that Van Oort would have furpafled all his contemporaries, if he had feen Rome, and formed his tafte by ftudying after the belt models. He painted a great number of defigns for the altars of churches in Flanders, which have much merit in feveral parts ; and they are ftill beheld with pleafure by good judges OOST,a kiln for drying hops after they are picked from the ftalks. Oosr (Jacques Vac), a painter of hiftory, land- fcape, and archite&ure, was born at Bruges about the year 1600, and learned the art in his native city, though it is not afcertained by what matter he was inftrudted ; but he travelled to Italy, to ftudy after the works of the great matters, and copied every thing that pleafed his own tafte, or that he thought might contribute to his improvement. However, among all the famous artifts, he attached himfelf particularly to the ftyle of Annibal Caracci, and imitated him in fuch a manner, as to furprife the moft able connoifleurs at Rome. He pofieffed many of the accompliihments of a great painter. His touch and his colouring were good ; he introduced but few figures in his defigns, to avoid incumbering his fuhjecl ; and he difpofed them with a great deal of fkill and elegance ; giving them fuch draperies as were fimple and natural. He defigned in a good tafte ; and though his ftyle of compofition re- lemh ed that of Annibal yet it was lefs charged than the defigns of that malter ufually are. In his carna¬ tions, his colouring was frefh and like nature ; but he is not fo commendable in the colour of his draperies, which is fometimes fo broken as to give the fluffs an appearance of hardnefs. He underflood perfpeciive and archite&ure extremely well; and as he wras not fond of painting landfcape (though occafionally he painted it well), in the Head of it he ornamented his back grounds moft frequently with buildings, co¬ lumns, arches, and different pieces of architecture, which gave his compofition a grand effeCt. The moil admired puflure of Van Ooft is in the ] O P A church at Bruges which belonged to the Jefuits : the Opacity fubjeft of it is, a Defcent from the Crofs ; in which °P*h< the defign, the difpofition, the expreffion, colour, and ■ chiaro-fcuro, are worthy of the higheft praifes. He had a fon of the fame name, who acquired confiderable fame in his profefiion. OPACITY, in philofophy, a quality of bodies which renders them impervious to the rays of light. OPAH, commonly called the kingfjh. See Zeus. J^LI The body is deep ; the feales exceedingly minute : it *' has fetaceous teeth on the tongue only, one long dor- fal fin, and a tail fomewhat lunated. The genus of which this is a fpecies is not numerous : This, howe¬ ver, is confiderably the largeft, and with refueCt to its colours the moft fplendid. It is confidered by many as the moft beautiful fifh that is found on the coaft of Europe. Mr Pennant in his Britifh Zoology gives the following account of this fifh, which is exceeding¬ ly rare on the Britifh coaft : “ We have only four inftances (fays he) of this fifh being taken in our feas, each of them in the north, viz. twice off Scotland, once off Northumberland, and once in Filey-Bay, Yorkfhire. This laft was caught about two years ago, and exhibited as a fhow at Scarborough. “ it is of that genus which Linnreus diftinguifhes by the name of Chatodon from its briftly teeth, and is faid to be very common on the coaft of Guinea; (See Ch/etodon). (a) “ It is well deferibed by an anonymous writer in tlje London Magazine for Oftober 1767, which we fhall borrow, as the account is confirmed to us by Mr Travis, who had an opportunity of examining one of the fame fpecies. “ Newcaftle, September 12. On Saturday laft was thrown upon the fands at Blyth, a very rare and beautiful fifh, weighing between 70 and 80 pounds, fhaped like the fea bream. The length was three feet and an half; the breadth from hack to belly al- moft two feet ; but the thicknefs from fide to fide not above fix inches. “ The mouth fmall for the fize of the fifh, form¬ ing a fquare opening, and without any teeth in the Jaws. The tongue thick, refembling that of a man, but rough and thick fet with beards or prickles, point¬ ing backwards, fo that any thing might eafily pafs down, but could not.eafily return back; therefore thefe might ferve inftead of teeth to retain its prey. The eyes remarkably large, covered with a membrane, and fhining with a glare of gold. The cover of the gills like the falmon. “ The body diminifhes very fmall to the tail, which is forked, and expands 12 inches: the gill fins are broad, about eight inches long, and play horizon¬ tally : a little behind their infertion the back fin takes its original, where it is about feven inches high, but flopcs away very ftxddenly, running down very near the tail, and at its termination becomes a little broader z the belly fins are very itrong, and placed near the middle of the body : a narrow fin alfo runs from the anus to the tail. 8 “ AU ( a ) Later writers feem with more already referred. propriety to have ranked it under the genus Zeus, to which we have o p a r 2 “ All the fins, and alfo the tail, are of a fine fcarlet; but the colours and beauty of the reft of the body, which is fmooth and covered with almoft imper¬ ceptible fcales, beggars all defcription; the upper part being a kind of bright green, variegated with vvhitifh fpots, and enriched with a fhining golden hue, much refembling the fplendour of the peacock’s fea¬ thers ; this by degrees vanifhes in a bright filver ; and near the belly the gold begins again to predominate in a lighter ground than on the back.” OPAL, in natural hiftory, a fpecies of the chroa- ftaces genus of gems.- This fpecies of precious ftone is generally efteemed the moll beautiful of all the flinty tribe, which appears to be owing to its changeable appearance when viewed by reflection —The form of the opal is that of a pebble, like the agate, with tvhich authors in general have clafled it, from a fup- pofed refemblance, of which there appears no fort of proof. On the contrary, Bergman’s analyfis points it out to be of a very different nature from the genus of flints, of which the agate is a fpecies ; magnefia conflituting a large part of its compofition, and not entering at all into that of the agate, if we are to judge from the analyfis of the parent fpecies or flint, there being none yet publifhed of agate The fpe- cific gravity of the opal is likewife extremely diffe¬ rent from that of the agate. Wallerius tells us that its fpecific gravity is upwards of 1900 It lofes its colour and tranfparency in the fire, and in other re fpefts is affefted by it in the very fame manner as quartz or flint would be. It may be melted with bo¬ rax, but not without great difficulty. The fpecies are, 1.'The opal of Nonnius. This appears olive-co¬ loured by reflection, and then opaque ; but when held between the eye and the light, it is found to be tranf- parent, and appears of a beautiful ruby colour. Boc- cede Boot, author of the Complete Jeweller^ confi- ders it as the molt precious fort of opal, and indeed the moft wonderful of this kind of nature’s works : he gives a lofty encomium upon it, chiefly from Pliny, wh6 called this opal paderos. This fpecies of opal is the fangemn of India, and nonnius of the ancients and mo¬ dern Europeans, from the Roman fenator Nonnius, pofleflbr of the famous opal of Rome, worth 20,000 fefterces, who preferred baniihment to parting wdth it to Anthony. An opal anfwering exaftly to Pliny’s defeription of the nonpius was difeovered about 30 or 3 $ years ago in the ruins of Alexandria, and purcha- fed for a trifle by the French conful Lironcourt, from his draguman Roboly. The duke de Nivernois, when ambaffador in London in 1763, was in pofleffion of the very ftone. The next in eftcem and value is the Iris opal, of a glafiy white colour, but when looked through it appears of a flame-colour, as the nonnius does of a ruby. Wallerius indeed is of opinion that the opal found in Alexandria was not that of Nonnius mentioned by Pliny ; and adds, that it was by many fuppofed to be only a counterfeit piece of glafs or pafte. There is another of the fame fpecies in Sweden, which by re- fk&ion appears of a brownifh colour, but by refrac¬ tion is red with violet veins. 2. ’ he white opal, having its ground of a white glafs-like complexion, from whence green,, yellow, 19 ] O P A bluifh, and. purple rays are thrown out; but when Opal, held againft the light it appears of a reddifh or rather "" V"" flame-colour. Wallerius, in his Mineralogy, fays, that this white opal anfwers the deferiution of it given by Pliny much better than the olive coloured one above deferibed. There are two varieties of it: 1. 1 he oriental opal, fhowing many colours.—Engenftroom informs us, that he had obtained a fmall piece of pfeudo agate from the Eait Indies, of a yellowsfli brown and pale blue, or rather milk colour, with a fhining brightnefs, exaCfly like that of the milky opals already mentioned ; alfo fome other fpecimens near Turin in Piedmont, where they are called ba- . Jlard-agates, a name which, in his opinion, is ex¬ tremely proper for them, as they agree with the agates in almoft every lefpeef except hardnefs : this, how¬ ever, has been controverted —Sometimes the opal is furrounded with a white cruft, like common flints in the ft rata of chalk ; which cruft has likewfife the lame properties as the flint when this la mentioned fub- ftance has been previoufly freed from the adherent chalk ; viz. 1 It dees not diflblve in nitrous acid. 2. It is not fufibleperfe. 3. It melts pretty eaiily with borax, but without any effervefeenee, contrary to what is obferved in calcareous fubftances; fo that borax will diflblve about three quarters of its own bulk of this fubftance, though with difficulty, efpecially to¬ wards the end of the operation; but the glafs becomes quite clear and colourlefs, inftead of becoming white and opaque, as is the cafe with calcareous fubftances. This oriental ftone is found in the ifiand of Ceylon, where it is called the elementary ftone. The inu ians put as high a value on it as on the diamond. There is another kind of oriental opal much valued, gene¬ rally called the jlaming opal, becaule it changes its co¬ lours, as if fparks of fire cfcapecf from it in p rallel lines. 3. The bluifh and femitranfpatent opal is lefs va¬ lued by thofe who are converfant in gems than the others, on account of its being fuppofed more eafily imitable by art. M. Magellan, however, informs us, that not only this, but feveral other kinds of opals are eafily imitable by art ; feveral compofiuions of glafs being met with whkh {how very diflerent co¬ lours by refleftion and by retradtion. curious an¬ cient one of this kind is to be feen in the royal abbey of St Denis near Paris, which is green on the outlide, but (hows a fine ruby colour when held between the eye and the light. Our author has alfo fetn fome glafs paftes made in London by Edward Delaval, Efq; and others by Mr More fecretary to the Society of Arts, which appeared of a yellow brown or other colour by refiedfion ; but when held againft the light tranfmitted a fine blue, purple, or red colour, like the fapphires, rubies, garnets, and other precious ftones.—WalleriuB gives directions for making thefe paftes ; and M. Magellan informs us, that he by chance difeovered that the red glafs of Kunckel, when ov^r-melted, or burnt in a common fire, produces a fimilar effect, tranimitting one colour by refraction and another by reflection. The fine imitations of the true white opals, which Pliny fays were made by the Indians, have, in our author’s opinion, hitherto baf¬ fled the art of the moderns. E e 2 The Opal, Ojal.a. O P A [210 •The fangenon or nonnius opal Js found in the Eafl Indies : the Iris in Ceylon ; the milky opal, at Eil- benftock and* Fry berg ; the bluifh or moil common and le:ft efteemed, in Hungary, Silefia, Saxony, &c.; the olive and bottle coloured cat’s eye, in Ceylon ; the inferior in different countries of Europe. Mr Born mentions what he calls an avantunne cat’s eye, of a flefh colour and tranfparent, poflefling the curious flrufture of the avanturine, viz. compofed of little plates like fcales, with a metallic fplendour, which reflect the rays of I'ght like the opal. This flone we fufpeft to be that which has led authors to clafs the avanturine with the ooal, although it is in fart a fine opaque quartz. R iffia produces the opal at the ri¬ vulet Katfcha, near the city of Krafnajark, in the Alta; mountains in Siberia. The cat’s eye is found in Mount Caucafus, and is often confounded with the opal, though improperly. See Asteria. The oculus munii ^fee Hydrophanes) has a very intimate con¬ nexion with opal, being generally found in beds over it, and being regarded by fume naturalifts as the fame done m a date of decompofition by the ac¬ tion of the air Raffia podeffes this flone in the Al¬ tai mountains, where the opals are found. No method of eflimating the opd is given by authors that we know of. But thofe of uncommon beauty and fize are fold for very large fums. The late Eeopald If. emperor of Germany, was in pofleffion of an oriental flone, fometimes defcribed as a cat’s-eye and fometimes as an opal, of one inch dia¬ meter, and which was valued at a great orice. Prince Potemkin, the Ruffian general, purchafed for 1000 ducats a flone ®f the fame kind, faid to have been taken by the famous Nadir Shah from the head of a Gentoo idol, of which it made one of the eyes. By what chcuitous road it found its way to Potemkin, we have not been informed ; but with many other gems it difappeared from the tent of the Perfian con¬ queror when he was afiaffinated. Opals are commonly found in detached pieces, in an envelope of a different kind of Hone, from the iize of a pin-head to that of a walnut. Beautiful opals of this lafl fize are extremely rare ; fo that it is difficult to find an opal fufficiently perfeX and large to be completely poffeffed of all its beauties: this renders it fo precious, and makes it almofl impoffible to determine its value. They have agreed, however, to value a beautiful oriental opal at double the price of a fapphire of the fame fize. It is very remarkable, that all the beautiful colours ] O P H OPERA, a dramatic comnofition fet to mafic, and fung on the ftage, accompanied with mufical inftru- ments, and enriched with magnificent dreffes, machines, and other decorations.—This fpecies of drama is of modern invention. In its prefent Hate it was cot known even in Italy before the beginning of the lail century ; and at its introduXion into England, a cen¬ tury afterwards, it divided the wits, literati, and mu- ficians of the age. By thofe who were elleemed the belt judges of the art, the Engliffi language was con- fidered as too rough and inharmonious for the mufic of the opera ; and, on the other hand, critics, whofe tafle was built on the bafis of common fenfe, looked upon a drama in a foreign and unknown tongue as the greatefi of all abfurdities. Many of them, however. pleaded for operas in the Englifh language ; and it is well known that Addifon, who was one of the oppo- fers of the Italian opera on the London flage, wrote in his native tongue the opera of Rofamond. This is confeffediy a beautiful poem; but, in the opinio., of Dr Burney, it adds nothing to Addifon’s fame, as it ffiows bis total ignorance of the firft principles of mufic, and of courfe his unfitnefs for the taflc he had undertaken. \ In queftions refpeXing the fine arts there is no ap¬ peal from the general tafle; and therefore, as the French opera, which is in the language of the coun¬ try where it is aXed, has always been admired by perfons of liberal education, it doubtlefs has merit confidered as a drama ; but how the dramas of this kind which are compofed in Italian fiiould find ad¬ mirers in England, among perfons who underfland not a word of the language, is to us a matter of ailonifh- ment. The mufic of them may deferve and command the admiration of every one who has an ear; and the aXion of the fingers may be perfeXly fuitable to the fubjeX reprefented ; but of this fuitablenefs the ma¬ jority of the audience can be no judges. Even when the language is thoroughly underftood, we fliould imagine, that, to make an opera agreeable to good fenfe, much would depend upon the choice of the fubjeX ; for it is fur el y abfurd to have perfons of all ranks, and on every occafion, perpetually ac¬ companied with the regular refponfes of fymphony. To hear Casfar, Scipio, or Macbeth, when forming plans to enfure viXory, or hatching plots of treafon and murder, talking in recitative and keeping time with fiddles, would furely difguft every perfon whofe fenfe had not all evaporated in found ; but when the fubjeX reprefented naturally admits of mufic in real of the opal may entirely change or difappear when the life, we can fuppofe an opera to afford to perfons of ffone is divided into pieces. This phenomenon, which tafle one of the moll exquifite and refined entertain- has been demonflrated more than once by experience, ments of which human nature is capable. For a fur- leads us to think that all the iparkling play of the opal is owing to the refraXion of the rays of the fun from the furface of the flone, which is naturally form¬ ed to produce this refraXion. OPALIA, in antiquity, feafts celebrated at Rome m honour of the god lefs Ops. Varro fays they were held on the tqth of December, which was one of the days of the faturnalia: thefe two feafls were celebrated in the fame month, becaufe Saturn and Ops were huf- 7 band and wife : the vows offered to the goddefs were the order of apodes. The principal charaXers of this made fitting on the ground. genus are the following. The head is fomewhat naked; the ther account of the opera, fee Music, n° 39, 42, 44, and Poetry, n° 133, &c. OPERATION, in general, the aX of exerting or exercifing fome power or faculty, upon which an effeX follows. Operation, in furgery and medicine, denotes a methodical aXion of the hand on the human body, in order to re-eftablifh health. OPHIDIUM, a genus of fifhes belonging to Plate CCCiA O P H [2 Opfc'i’iuw. the teeth are in the taws, palate, and fauces ; the bo* dy Ion^ ; the fins of the back, tail, and anus, con¬ founded in one ; no fin on the under part or tne bo¬ dy ; and the eyes covered by the common Ikin. Of this genus there are feveral fpecies, of which the moil curious is the ophidlum barbatu*n of Linnreus, thus de¬ fer!! ted by Dr Brouifonet in the 7iit volume of the Philofophical Tranfadtions. “ 1'he/cales of the ophidium (fays he) are irregularly placed and difperfed over the whole body. 1 heir form is fometimes round, fometimes nearly oval. 1 hey are larger near' the head, and in the lower part of the body ; but are 'hardly to be dillinguifhed near the tail. They adhere to the body by means of a par¬ ticular tranfparent flein, which is in general very thin, but fomewhat thicker near the neck, and extended loofely over the whole head : this fkin is very eafily de- flroyed, after which the feales falling, the body ap¬ pears fpotted (fig 1.) When you look at them with the naked eye (fig. 2.) they appear as covered with very fmall grains ; but viewed through a microfcope (fig. 3.) the middle of them appears more elevated than the margin ; and from the centre to the margin, clofe by each other, there are many lines or rays formed by fmall feales placed upon one another, like tiles upon a roof, the fuperior being always the nearer to rite centre. This fort of feales, which may be called vmhimaltKy are fattened to the body by very fmall veflels which are inferted in their middle ; they are to be feen on the body only, not on the head nor the fins.” The anatomy of this fifK comprehends fome very remarkable circumftances, which, our author thinks, were never obferved in any other fpecies. When the Ikin is drawn off, there appears a thin membrane of a filver colour, which covers the mufcles. The mufeles being removed, we find the peritoneum, which lines the abdominal cavity, and is adherent to the fwimming bladder by fome elongations. It is of a filver hue, with fome very fmall black points. The ventricle is not to be dittinguifiied from the inteftines by any other mark but by its fize ; its form is oblong ; it is extend¬ ed almoft to the anus, from whence the inteftinal du£t has a retrograde courfe, and then defeends again, ha¬ ving a little dilatation near the anns. On the ver¬ tebrae next the anus on the outfide of the peritoneum is a kind of cavity of an oblong form, containing a reddifh vifeus, which he takes to be the kidney. The fir it vertebra from the head has nothing very remarkable in its ttrudlure. The fecond has on each fide an elongated and {harp apophyfis, to the apex of which is annexed a fmall ligament The third is very flat, and has on each fide a kind of tri¬ angular and fliarp apophyfis, to which adheres a ligament as to the fecond. The fourth is remark¬ able in having a {harp apophyfis on each fide, arti¬ culated with the body of the veitebra ; and under each of them is another articulated apophyfis, flattifh, thick, rounditti at its extremities, and forked at its ba»ofaIa, when once underftood, were the very means of per¬ forming this voyage ftfely and expeditioufly. The veflel tra ing to bo:ala failed trom the bottom of the Arabian gulph in fummer, wrth the monloon at north, wirtch carried her to Mocha. There the rnon- foon failed her by the change of the direHion of the gulph. i he foutn-weft winds, which blow without cape Gardefan in the Indian ocean, forced themfelves round the cape fo as to be felt in the road of Mocha, and make it uneafy riding there. But thefe foon changed, the weather became moderate, and the vef- fel, wc fuppofe hi the month of Auguft, was fate at anchor Oph’f O P H anchor under cape Gardefan, where was which, many years aftewards, was called Pramonto- rium Aromatum. Here the fhip was obliged to ftay all November, becaufe all thefc fummer months the wind fouth of the cape was a flrong fouth-wefter, as hath been before faid, direftly in the teeth of the voyage to Sofala. But this time was not loft ; part of the goods bought to be ready for the return was ivory, frankincenfe, and myrrh ; and the (hip was then at the principal mart for thefe. Our author fuppofes, that in November the veflel failed with the wind at north-eaft, with which ftie would foon have made her voyage: but off the coaft of Melinda, in the beginning of December, fhe there met an anomalous monfoon at fouth-weft, in our days firft obferved by Dr Halley, which cut off her voyage to Sofala, and obliged her to put into the fmall har- 'bour of Mocha, near Melinda, but nearer ftill to Tarfhifh, which we find here by accident, and which we think a ftrong corroboration that we are right as to the reft of the voyage. In the annals of Abyf- finia, it is faid that Amda Sion, making war upon that coaft in the 14th century, in a lift of the rebellious Moorifti vaffals, mentions the chief of Tarlhiih as one of them, in the very fituation where we have now placed him. Solomon’s vefftl, then, was obliged to ftay at Tar- fhifli till the month of April of the fecond year. In May, the wind fet in at north-eaft, and probably car¬ ried her that fame month to Sofala. All the time fire fpent at Tarlhifti was not loft, for part of her car¬ go was to be brought from that place ; and fhe pro¬ bably bought, befpoke, or left it there. From May of the fecond year, to the end of that monfoon in O&ober the veffel could not ftir. the wind was north call. But this time, far from being loft, was necef- fary to the traders for getting in their cargo, which we (hall fuppofe was ready for them. * The fhip fails, on her return, in the month of No¬ vember of the fecond year, with the monfoon fouth- weft, which in a very few weeks would have carried her into the Arabian gulph. But off' Mocha, near Melinda and Tarihiih, fhe met the north-eaft mon¬ foon, and was obliged to go into that port and ftay there till the end of that monfoon ; after which a fouth-wefter came to her relief in May of the third year. With the May monfoon fhe ran to Mocha within the {trails, and was there confined by the fum¬ mer monfoon blowing up the Arabian gulph from Suez, and meeting her. Here fhe lay till that mon¬ foon, which in fummer blows northerly from Suez, changed to a fouth-eaft one in October or November, and that very eafily brought her up into the Elanitic gulph, the middle or end of December of the third year. She had no need of more time to complete her voyage, and it was not poffible fhe could do it in lefs. Such is a very fhort and imperfeft abftradt of our au¬ thor’s reafons for placing Ophir in Sofala. If it ex¬ cite the curiofity of our readers to confult his work, it will anfwer the purpofe for which we have made it. We are now to give another ingenious conje&ure Sypothdis, concerning the lituation of Ophir and 1 arfliifh, with Another [ 223 ] O P H the port which we have been favoured by Dr Doig, the learn* i Oph‘r- < ed author of Letters on the Savage State, addreffed v to Lord Kames. This refpectable writer holds that Ophir was fame* where on the weft coaft of Africa, and that Tar¬ fhifh was the ancient Bcetica in Spain. His effay is not yet publifhed ; but he authorifes us t© give the following ahftraii of it: “ The firft time that Ophir, or rather^M/fr, occurs in feripture, is in Gen. x. 29. where the facred hiftorian, enumerating the fons of Joktan, mentions Aufir as one of them.” According to his account, the defeendants of thofe 13 brothers fettled all in a contiguous fituation, from Mefha (the Mocha of the moderns) to Sepharah, a mountain of the eaft. Mofes, as every one knows, denominates countries, and the inhabitants of countries, from the patriarch of whom thofe inhabitants defeended. In deferibing the courfe of one of the branches of the river of paradife, the fame Mofes informs us that it encompaffed the whole land of Havilah, &c. which abounded with fine gold, bdellium, and the onyx ftone ; and this land had its name from Havilah the 12th fon of the patriarch Joktan. Ophir or Aiifir was Havilah’s immediate elder brother ; and of courfe the defeendants of the former, in all probability, fixed their habitation in the neigh¬ bourhood of thofe of the latter. If, then, the land of Ha¬ vilah abounded with gold and precious ftones,the land of Ophir undoubtedly produced the very fame articles. 5 Here then we have the original Ophir; here wasTheongZ- found the primary gold of Ophir; and here lay thenabOphir Ophir mentioned in Job xi. 24. But as navigation was then in its infant ftate, the native land of gold Solomon j mentioned by Job muft have been much nearer home ot which than that to which the fleets of Solomon and Hiram made their triennial voyages. That feveral countries on the fouth-eaft coaft of Africa abounded with gold long after the era of Job, is evident from the tefti- mony of Herodotus, Strabo, Diodorus Siculus, Pto¬ lemy, Pomponius Mela, &c.; but that in thefe coun¬ tries the Ophir of Solomon could not be-fituated, is plain, becaufe his {hips in the fame voyage touched at Tarfhifh, which lay in a very different quarter. The Abyffinian traveller has placed this regio auri- fera in Sofala on the eaftern coaft of Africa, nearly oppofite to the iftand of Madagafcar. This hypothefis was current an hundred years before he was born ; but l am perfuaded (fays our author) that it is not tenable. TheUphirof Solomon, in whatever part of Africa it lay, muft have been well known, prior to his reign, both to the Phoenicians and the Edomites. Thefe people na¬ vigated that monarch’s fleet, and therefore could be no ftrangers to the port whither they were bound. That it was in Africa is certain ; and that it was on the welt coaft of that immenfe peninfula, will appear more than probable, when we have afeertained the ^ fituation of Tarfhilh, and the ufual courfe of Phosni- . 0 cian navigation. 1 o thefe objects, therefore, we fhallbe afeer- now diredt our enquiries. tamed by “Javan, the fourth fon of the patriarch Japhet, c'‘,coverinS had four fons, Elilhah, Tarjln/h, Kittim, and Doda- nim or Rodanim ; among whofe ‘ defeendants were the ifles of the Gentiles divided.’ The city of Tarfus on the coaft of Cilicia, at once afeertains the region colonized by the defeendants of Tarfhifh. But as much depend* O P H [2 OpWr, depends upon determining thepofition of this country, W—y—j endeavour (fays the Doftor) to fix it with ail poffible precifion. “ !h the firft place, I muft beg leave to obferve, that there is not a fingle paifage in any ancient author, facred or profane, that fo much r.s alludes to any city, diliricl, canton, or country, of the name of Tarlhifh in the eaftern parts of the world. The defeendants of Javan, of whom Tarfhifh wras one, are agreed on all hands to have extended their fetdements towards the north-weft, i. e. into Afia Minor, Italy, and Spain. The inhabitants of Tarfhifh are every'where in ferip- ture iaid to be addicted to navigation apd commerce* in w'hicli they feem to have been connected with the # Pf xlviii. Tyrians and Phoenicians*, who were always faid by 7. kxn. 10 the Jew’s to inhabit the ifles of-the fea. Indeed, in Hebrew geography, all the countries toward the north and weft, which were divided from Judea by the fea, f Gen.ii.a6were called the ifles of the feaf. Thus-Ifaiah : ‘ T he burden of l yre. Howl ye fhips of Tarfhifh* for it is laid wafte, fo that there is no houfe, no en¬ tering in : from the land Chittim it is revealed unto them. Be ftill ye inhabitants of the Hie, thou wheffn the merchants of Zidon, that yafs over the fea, have replenifhed.’ The land of Chittim was Mace¬ donia, and often Greece, from which every one knows that the deftrudion of Tyre came ; and that Tarfhifh was not an unconcerned fpedator of that deftrudion, is obvious from the fame prophet, who proceeds to Hr xxlii- fay J : ‘ As at the report concerning Egypt, fo fhail they be forely pierced at the report concerning Tyre. Pafs over to Tarfhifh; howl ye inhabitants of the ifte. Is this your joyous city?’ It appears likewife from § xxvn. 12. Ezekiil that Taifhifh was the merchant with whom Tyre traded for filver, iron, tin, and had, and that ^ this trade was carried on in fairs. Theorist- From al thefe paftages, it feems to be evident, | a) 1 fli- that the defeendants of Tarfhifh fettled on the weftern ifh where co2ft 0f Aft a Minor ; that thefe people were addided to navigat.on and commerce ; that in the courfe of their traffic they were conneded with the Tyrians and Phoenicians; that tne commerce they carried on confifted of filver, iron, tin, and lead; that the people of Tarfhifh were connected with Kit- tim and the ifles of the Gentiles, which are confeffed- ly fituated toward the north and weft of Judea. “ But left, a! ter all a fad fo fully authenticated fhould .dill oe called in cjueftion, I fhall add one proof more, which will place the matter beyond the reach of doubt and controverfy. “W hen the prophet Jonah intended to flee from the prefence of the Lord, in order to avoid preaching at Nineveh, let us fee where the peevffh deferter embnrk- ed. (jonah i. 3.J ‘ And Jonah rofe up to flee un¬ to laifhifli, from the prefence of the Lord, and went down to Joppa; and he found a ffiip going to Tarfhifh, and he paid the fare thereof, and went down into it, to go with them into f arfhifh, from the prefence of Ewmy body knows that Joppa or Ja- pruh flood upon the fhore of the Mediterranean ; of eoune the fugitive prophet had determined to go to fome very diftant region weftward, and by that means to get as far from Nineveh as poffible ” Having thus proved to a demonltration, that the lihofSda. °n|pa 3arfcini was a reSiou on the weftern coaft of mon. ■ K . fuua^ed. 8 This not 24 ] OP H Alia Minor, where either the patriarch of that name* Oph'r. or fome of his immediate defeendants, planted a colo. — ny, it remains to determine whether this was actually the country from which Solomon imported the vafl quantities of filver mentioned by the facred hiftorian. That it was not, our author frankly acknowledges ; and therefore, fays he, we muft look out for Solomon’s Tarihiffi in fome other quarter of the globe. To pave the way for this difeovery, he very jnftly o! fervts, that it has at all times been a common prac¬ tice to transfer the name of one country to another, in coniequence of fome analogy or refembance between them. It has 1 kewife often happened, that when a commodity w-as brought from a very diftant country by a very diftant people, the people to whom it w-as imported have taken it for granted that it was pro¬ duced in the region from which it was immediately brought to them. Of the truth of this pofition no man acquainted with the Greek and Roman poets can for a moment entertain a doubt. Hence the /IJfynum amomum of Virgil, and tire Ajjyrium malabathrum of Horace, though thefe aitrcies were the produdl not of Aflyria but of India. The Jews, who were as little acquainted with foreign countries as the Greeks and Romans, had very probably the fame notions Hth them refpefting articles of commerce ; ami it fo, they would undoubtedly fuppofe, that the filver fold by the merchants of Tarfhiffi wms the produCt of that country When this miftake came to be difeovered, 9 they very naturally transferred the name Tarthijh ft o:n o!- the country of the merchants to that of the articlescou try which they imported. Let us now, fays our author, t,a, sferre(l try if we cannot find out where that country was. to another. It has been already ffiown, by quotations from Ifaiah and Ezekiel, that the merchants of Tarfhiffi traded in the markets of Tyre with filver, iron, lead, and tin. To thefe authorities, we fhall a id another from Jeremiah : “ Silver (fays that prophet) fpreatl into plates is brought from Tarfhifti ” “ But in Spain , continues our learned differ tator), all thofe com¬ modities were found in the greateft abundance. All the ancient authors who deferibe that region dwell with rapture on its filver mines. This fadt is too ge¬ nerally known to need to be fupported by authorities. Spain was then the region which furnifhed Solomon’s traders with the immenfe mafs of filver he is faid to have imported. This was, one might fay, the mo¬ dern Tarfhifh and indeed both Jofephus and Eufe- bius are pofitive that the pofterity of Tarfhifti adlual- ly peopled that country. If this was an early opinion, as it certainly was, the Jews would of courfe deno¬ minate Spain from the patriarch in queftion. “ I have ftrown above, that the inhabitants of Tar¬ fhifh were ftridtiy conneCled with the Kittim, or Gre¬ cians ; i fliall here produce an authority which will prove to a demonftration that the Kittim had extend¬ ed their commerce into that part of Africa now called Barbary. “The Prophet Ezekiel, (xxvii. 6.) deferibing the fplendor and magnificence of Tyre, tells us, ‘ that the company of the Afhurites made her benches of ivory, brought from the ifles of Kittim.’ In the (irft place, I muft obferve, that there is probably a fmall error in the orthography of the word A'fhunm. This term is every where in feripture tranflated Aflyrians, which Opfiir. OPH [2*5] OPH wWli tranflation is certainly iuft. But how the Af- cd fo powerfully on the learned Bochart, and on lome ' fyrians could export ivory frim the iflcs of Kittim, other moderns of no mean hgure that they have po- and fafhion it into benches for the Tyrian mariners, fitively affirmed, as Jofephus had done before them, f3 m m opiaion a prlto The that the patriarch Tarlhhhaaually fettled rn that fa’a is, Aihurim ihmSd be Anierim, that is, the com- country. This 1 Ihould think not altogether pro- Ophir. pany of the men of Affier. 1 he tribe of Affier ob tained its inheritance in the neighbourhood of lyre ; (fee Joffi. xix. 28.) ‘ And Hebron, and Rehob, and Hammon and Canah, unto Zidon the great. The companies of the tribe of the Affierites then, and not the Afhurim, were the people who manufadtured the benches in queftion. “ Be that as it may, the ivory of which thefe imple¬ ments were formed was imported from the ifles of Kittim, that is, from Greece and its neighbourhood. Thefe iflands, it is ceitain, never, produced ivory. They mull therefore have imported it from fome other country ; but no other country, to which the Greeks and their neighbours could have extended their com¬ merce, except the north of Africa,produced that modity. The conclufion then is, that the maritime ftales of Afia Minor, Greece, and probably the He- trufeans on the weft coaft of Italy, carried on a gain¬ ful commerce with Spain and Barbary at a very early * “ We have now feen that the original Tarffiilh on the coaft of Afia Minor did not produce the metals im¬ ported by Solomon’s fleet ; that no Tarffiiffi is to be found in the eaftern parts of the globe ; that the Tar- ftiifti we are in queft of veas undoubtedly fituated for. e- where towards the weft of Judea : we have fhown that the mercantile people of Afia Minor, Greece, and p:o- bably of Italy, adually imported fome of thofe articles from the coaft of Africa ; we have hazarded a con- je&ure, that Spain was the modern Tarffiilh, and that very country from which Solomon imported his fil- ver, and the Tyrians their filver, iron, tin, and lead. Let us now make a trial whether we cannot exhibit fome internal proofs in fupport of the hypothefis we have above adopted. “ The ancients divided Spain into three parts, Bce- tica, Lufitania, and Tarvaconenfis. Boetica is the modern Andalufia. It ftretched along the Fretum Herculeum, or Straits of Gibraltar, to the mouth of Guadalquiver. 1 his region is thought by fome. to have been the Elyfian fields of the poets. rI he river This I ffiould thirik hable but that his defendants who fettled on the coaft of Afia Minor colonized Bcetica, and carried on an uninterrupted commerce to that country, along with the Phoenicians, for many centuries after it was peopled, and that from the circumftances above nar¬ rated, it was denominated Tarjh'jh, are fafts too pal¬ pable to admit of contradiftion. “Let us now fee whether this Bcetica, where I have endeavoured to fix the fituation of the Tarfhiffi of the feriptures, was actually furnifhed with thofe articles of commerce which are faid to have been imported from that country. To enlarge on this topic would be al¬ together fuperfluous. Diodorus Siculus, Strabo, Po¬ lybius, Pliny, Solinus, and, in one word, all the Greek and Roman hiftorians who have mentioned that region, have unanimoufly exhibited it as the na¬ tive land of filver, iron, and tin : to thefe, contrary to the opinions of the celebrated modern traveller, they likewife add gold in very large quantities.” Our author having thus afeertained the fituation of Tarfhifh, proceeds to prove, by a mafs of evidence too large for our infertion, that the Edomites and Ty¬ rians had doubled the Cape, and almoft encompaffed Africa, long before the era of Solomon. Then refer¬ ring to 1 Kings, chap. ix. and x. 2 Chron. viii. ix. 2 Kings xxii. and 2 Chron. xx. he obferves, that from thefe authorities it appears indubitable, that the fleets of Solomon and Hiram failed from Eloth and Ezion- geber ; that the voyages to Ophir and Tarfhifh were exa&ly the fame, performed at one and the fame time, by the very fame fleet; which muft neceffarily have en- compafftd the peninfula of Africa before it could ar¬ rive at the country of Tarfhifh. This being the cafe* the traders might eafily enough colled the gold on the coaft of Guinea, or on what is now vulgarly called the Gold Coajl. The ivory they might readily enough procure on the Barbary coaft, oppofite to Tarfhifh. In Africa, too, they might hunt apes, monkies, baboons, &c ; and peacocks, or rather par¬ rots, and parroquets, they might furprife in the forefts which abounded on the coaft. In Spain, filver, iron. nave uccu me juiynau iivivio vji ^ — # * , Boetis, which divide, it, is called Tartr/us, by Ari- lead, and tin, were, one may fay, the native produce n .1 n* r t c. 1 D r—Joo Ctnr.Vi nf tVi** foil. Even at this earlv neriod. the Phoenician flotle, Stefichoms, Strabo, Paufanias, Steph. Byzant and Avianus Plere too we have a city and a lake of the fame name. But Tarteffus is pofitively the very fame with Tarfhifh. The Phoenicians, by changing/^iw into thau, made it Tartifh. The Greeks manufadured the reft, by changing Tartifh into Tartis, and in pro- ccfs of time into iccpTnccoc. That the Phoenicians adually changed fch'in into thau is certain ; for Pui- tarch tells us in the life of Sylla, that in their lan¬ guage an ox was called which is, no doubt, the fame with the Hebrew Jhor. “ From this dedudion,it appears highly probable at SpanifhBce-^ea^» t^at t^e SPan^ Bcetica was originally called tica 1 a* Tarfhifh. Indeed this fimilarity of names has operat- Vol. XIIL Part I. to Tarfhifh of the foil. Even at this early period, the Phoenician navigators had difeovered the Caffilerides, or Scilly iflands and Cornwall; and from that region, in com¬ pany with the merchants, may have fupplied them with that rare commodity. “ I have fuppofed that the navy of Solomon and Hi¬ ram colleded their gold in the courfe of their voyage fomewhere on the coaft of Africa, beyond the Cape, for the following reafons: Had they found the golden fleece at Sofala (a), or any part of the coaft of Afri¬ ca, they would have chofen to return and unlade at Eloth or Ezion geber, rather than purfue a long and dangerous courfe, quite round Africa, to Tarfhifh; to which laft country they might have fhaped their F f - courfe (a) That Sofala oppofite to the iGand of Madagafcar was Ophir, was an ancient conje&ure. See Bocchart. Chan. 1. 2. cap. 27- p* 160. 4to. o P H [ 226 ] O P H courfe much more commodioufly from ZJdon, Tyre, performed a voyage round Africa, in that age, in the Joppa, &c. But being obliged to double the Cape fame manner as that of Necho did two centuries af- in queft of fome of thefe articles which they were en- ter. Ophir, joined to import, they pufiied onward to Tarfhifli, and returned by the pillars of Hercules to Tyre, or perhaps to Joppa, &c. i heir next voyage commen¬ ced from one or other of thefe ports, from which they direfted their courfe to Tarfliifli ; and having taken in part of their lading there, they afterwards coaited round Africa, and fo arrived once more at Eloth or Ezion geber. “ Let us now attend to the fpace of time in which thefe voyages were performed. We are told exprefs- ly (2 Chron ix. 21 ) that once every three years came the fhips of iarfhifh, &c. This is exa£fly the time one would naturally imagine neceffary to per¬ form fuch a diftant voyage, at a period when naviga¬ tion was Hill in its infancy, and mariners feldom ad¬ ventured to lofe fight of the coaft. Of this we have an irrefragable proof in the hiitory of a voyage round the very fame continent, undertaken and accomplilhed in the very fame fpace of time, about two centuries after. “ We learn from Herodotus, 1. 2. cap. 149. that Ne- chus, one of the later kings of Egypt, whom the fciip- ture calls Pharaoh Mccho, built a great number of fhips, both on the Red Sea and the Mediterranean. The fame hiftorian, lib. iv. cap. 42. informs us, that this enterprifing monarch projefted a voyage round the continent of Africa, which was a&ually accom- plifhed in the fpace of three years. In the conduct of this enterprife, he employed Phoenician mariners, as Solomon had done before him. Thefe, we may fup- pofe, were afiifted in the courfe of this navigation by charts or journals, or at leaft by traditional accounts derived from their anceftors: 1 Thefe navigators (fays the hiftprian) took their departure from a port on the Red Sea, and failing from thence into the fouthern ocean, and, in the beginning of autumn, landing on the coaft of Africa, there they fowed fome grain which they had carried out with them on board their veffels, In this place they waited till the crop was ripened; and, having cut it down, they proceeded on their voyage. Having fpent two years in this navigation, in the third they returned to Egypt, by the pillars of Hercules. Thefe mariners, adds the author, reported a faft, which, for his part, he could by no means believe to be true ; namely, that in one part of their courfe their fhadows fell on their right; a circumftance which gives confi- derable weight to the truth of the relation.’ “ Let it now be obferved, that Phcenician mariners navigated the fleet of Solomon : the fame people con¬ ducted that of Necho : the fleet of Necho fpent three years in the courfe of its voyage ; that of Solomon did the fame in its courfe about two centuries before: the fleet of Necho failed from a port on the Red fea ; that of Solomon took its departure from Eloth or Ezion-geber, fituated on the fame fea; the fleet of the former returned by the pillars of Hercules; that of the latter, according to the hypothefis, purfued the very fame route. Such a coincidence of fimilar cir- ^umftances united with thofe adduced in the prece- ding part of this article, feem to prove almoit to a demonftration, that the navy of Hiram and Solomon “ Upon the whole, I conclude, that the original Ophir, which is really Aufir or Aufr, was fituated on the fouth of Arabia Felix, between Sheba and Havilah, which la ft was encompaffed by one of the branches of the river of Paradife: that the name Ophir, i.e. Aufr, was, in confequence of its refemblanee, in procefs of time transferred to a region on the coaft of Africa ; and that from it ftrft /!fer and then Africa was deno¬ minated : that the primitive Tarfhilh was Cilicia, and that tne Jews applied this name to all the commercial ftates on the coaft of Afia Minor, and perhaps of Ita¬ ly, there being ftrong prefumptions that the Tyrrhe¬ nians were colonifts from Tarlhifh ; that Bcetica, and perhaps fome other regions of Spain, being planted with colonies from Tarfhifh, likewife acquired the name of larftiiOi ; that the Tyrians were ftriiflly con¬ nected with the merchants of Tarfhifli in their com¬ mercial enterprizes; that Tarfliiih was certainly fitu¬ ated weft ward from Judea, Phoenicia, &c.; that no other country in the wellem quarters produced the commodities imported by the two kings, except Spain and the oppofite coafts; that this country, in thofe ages, produced not only fiiver, iron, tin, and lead, but likewife gold in great aoundance ; that the merchants of Kittim imported ivory, of which the Afherites made benches for the Tyrians; which commodity they muft have purchafed on the coaft of Barbary, where the Jews and Phoenicians would find the fame article ; that Tarfhifh being fituated in Spain, it was impoffible for a fleet failing from Eloth or Ezion-geber, to ar- Ir rive at that country without encompaffing Africa ; Ophir fitu- that, of courfe, the fleet in queftion did actually en-att'don the compafs that continent; that the Ophir of Solomon co.a? of' . muft have been fituated fomewhere on the coaft ofo/th^cIpeT Africa, to the weft of the Cape, becaufe from it the courfe to I arfhifh was more eligible than to return the fame way back to Ezion-geber.” Our author fupports this conclufion by manv other arguments and authorities, which the limits preferibed us will not permit us to detail ; but perhaps the arti¬ cle might be deemed incomplete, if we did not fhow how he obviates an obje&ion that will readily occur to his theory. “ If the original Ophir was i'eated on the coaft of Arabia Felix, and the modern region of the fame name on the weft coaft ®f Africa, it may be made a queftion, how the latter country came to be denominated from the former ? Nothing (fays our . author) can be more eafy than to anfwer this queftion. tion„ 0an!C" The practice of adapting the nameof an ancient country fwentd. to a newly difeovered one, refembling the other in ap- pearance,infituation,in figure,in diftance,in the nature of theclimate,produ&4ons,&e. has ever beenfoeommon, that to produce inllances would be altogether fuper- fiuous. The newly difeovered region on the coaft @f A fnca abounded with the fame fpecies of commodi¬ ties by which the original one was diftinguifned ; and, of courfe, the name of the latter was annexed to the former.” Whether Mr Bruce’s hypothefis or Dr Doig’s, re- fpefting the long difputed fituation of Solomon’s Ophir, be the true one, it is not for us to decide. Both are plaufible O P H [ 227 ] CPI OpWra plaufible, both are fupported by much ingenuity and II uncommon erudition ; but we do not think that the Op ryg. argUments 0f either writer furnifh a complete confu¬ tation of thofe adduced by the other. Sub judice Us eft. OPHTRA, in botany: A genus of themonogynia order, belonging to the odandria clafs of plants. The involucrum is bivalvular and triflorous ; the corolla te- trapetalous above; the berry unilocular. OPHI TES, in natural hiftory, a fort of variegated marble, of a du/ky-green ground, fprinkled with fpots of a lighter green, otherwife calledSee the article Marble. Ophites, in church-hiftory, Chriftian heretics, fo called both from the veneration they had for the fer- pent that tempted Eve, and the worlhip they paid to a real ferpent : they pretended that the ferpent was Jcfus Chrilt, and that he taught men the knowledge of good and evil. They diltinguifhed between Jefus and Chnjl : Jefus, they faid, was born of the Virgin, but Cbrilt came clown from heaven to be united with him ; Jefus was crucified, but Chrift had left him to return to heaven. They diftinguilhed the God of the Jews, whom they termed Jaldabaoth, from the fu- preme God : to the former they aferibed the body, to the latter the foul of men. They had a live ferpent* which they kept in a kind of cage; at certain times they opened the cage-door, and called the ferpent: the animal came out, and mounting upon the table, twined itfelf about fome loaves of bread ; this bread they broke and diftributed it to the company, who all killed the ferpent: this they called their Eucharift. OPHRYS twyblade : A genus of the diandria order, belonging to the gynandria clafs of plants ; and in the natural method ranking under the 7th order, Orchidece. The ne&arium is a little carinated below. The fpecies are numerous; but the molt remarkable are the following : I. The ovata, oval-leaved ophrys, or common t are juft now * befieging Valenciennes, to come into the room where we are writing, and tell us that thole armies are in good health and high fpirits ; that every fhot which they fire upon the fortrefs produces fome effed; and that they have plenty of excellent provi- fions, whilft the befiegcd are perifhing by hunger; we fhould abfolutely believe every fad which he had told us upon the evidence of his teftimony ; but we could on¬ ly be of opinion that the garrifon muft foon furrender. In forming opinions of this kind, upon which, in a great meafure, depends our fuccefs in any purfuit, every crrcumftance fhould be carefully attended to, and our judgments guided by former experience. Truth is a thing of fuch importance to man, that he fhould always purfue the beft methods for attaining it ; and when the objed eludes all his refearches, he fhould re¬ medy the difappointment, by attaching himfelf to that which has the ftrongeft refemblance to it; and that which moft refembles truth is called probability, as the judgment v\hich is formed of it is termed opinion. See Probability. OPITS, orOpinus (Martin), a celebrated Ger¬ man poet, born at Breflaw in ijoy* squired great fame by his Latin, and more by his German poems; and, retiring to Dantzic, wrote a hiflory of the aftcient Daci: he died of the plague in 1639. Opits (Henry), a learned Lutheran divine, born at Aitenburg in Mifnia in 1642. He was profeffor of theology and of the oriental languages at Kiel, where he acquired great reputation by a variety of ex¬ cellent works concerning oriental literature and He¬ brew antiquities. He died in 1712. OPIUM, in the materia medica, is an infpiffated juice, partly of the refinous and partly of the gummy kind, brought to us in cakes from eight ounces to a pound weight. It is very heavy, of a denfe texture, and not pcrfe&ly dry ; but. in general, eafily receives an impreffion from the finger : its colour is a browmfh yellow, fo very dark and dufky that at firft it appears black: it has a dead and faint fmell, and its talfe is very bitter and acrid. It is to be chofen moderately firm, and not too foft ; its fmell and tafte fhould be very flrong, and care is to be taken that there be no dirty or ftony matter in it. Opium is the juice of the papaver album, or white poppy, with which the fields of Afia Minor are in many places fown, as ours are with corn. When the heads are near ripening, they wound them with an in- 28 ] 0 p , 1 ftrument that has five edges, which on being fluck in- Opiur to the head makes at once five long cuts in it ; and ^ from thefe wounds the opium flows, and is next day taken off by a perfon who goes round the field, and put up in a veffel which he carries faftened to his girdle ; at the fame time that this opium is colle&ed, the oppofite fide of the poppy-head is wounded, and the opium colle&ed from it the next day. They di- ftinguiffi, however, the produce of the firft wounds from that of the fucceeding ones j for the firft juice afforded by the plant is greatly fuperior to what is ob¬ tained afterwards. After they have colledled the opi¬ um, they moiften it with a fmall quantity of water or honey, and work it a longtime upon a fiat, hard, and fvnooth board, with a thick and ftiong inftrument of the fame wood, till it becomes of the confiftence of pitch ; and then work it up with their hands, and form it into cakes or lolls for fale. Opium at prefent is in great efteem, and is one of the moft valuable of all the fimple medicines. In its effects on the animal fyftem, it is the moft extraor¬ dinary fubllance in nature. It touches the nerves as Leaked it were by magic and irrefiftible power, and fteeps the^ fenfes in forgetfulnefs ; even in oppofition to the de-/A; termined will of the philofopher or phyfiologilt, appri- fed of its narcotic effed. The modification of matter is infinite ; and who (hall truly fay by what peculiar or fpecific configuration of its parts, opium, even in the quantity of a fingle grain, adminiftered to the human body, fhall affuage the moft raging pain, and procure profound fleep ? The a&ion of matter upon matter, thus exempli¬ fied in the effed of opium on the animal fyftem, is not lefs aftonifhing and incomprehenfible, than that of fpirit upon matter or the agency of mind on the mo¬ tive powers of the body. The firfl effeds of opium are like thofe of a ftrong, ftimulaiing cordial, but are foon fucceeded by univer- fal languor or irrefiftible propenfity to fleep, attended with dreams of the moft rapturous and enthuliaftic kind. After thofe contrary effeds are over, which are generally terminated by a profufe fweat, the body becomes cold and torpid ; the mind penfive and de- fponding ; the head is affeded with ftupor, and the ftomach with ficknefs and naufea. It is not our bufinefs, neither is it in our power, to reconcile that diverfity of opinion which has late¬ ly prevailed concerning the manner in which opium produces its effeds ; or to determine whether it ads Amply on the brain and nerves, or, according to the experiments of Fontana, on the mafs of blood only.. Opium is the moft fovereign remedy in the materia medica, for eafing pain and procuring fleep, and alfo the rnoft certain antifpafmodic yet known , but, like other powerful medicines, becomes highly noxious to- the human conftitution, and even mortal, when impio- perly adminiftered. Its liberal and long continued ufe has been obferved greatly to injure the brain and nerves, and to diminifh their influence on the vital organs of the body. By its firft effeds, which are exhilarating, it excites a kind of temporary deliriupi, which diffipates and exhaufts the fpirits ; and, by its fubfequent narcotic power, occafions confufion of ideas and lots of memory, attended with naufea, giddinefs, headachy O P. I [ 229 ] O P o headach, and conftlpatlon of the bowels ; in a word, it feems to fufpend or dimimih all the natural fecretions and excretions of the body, that of perfpiration on y CX Thdfe who take opium to excefs become enervated and foon look old ; when deprived of it, they are faint, and experience the langour and dejeaion of fpints com mon to fnch as drink fpirituous liquors in excefs ; to the badeffeas of which it is fimilar, fmce, like thole, they are not ealily removed without a repetition of ^B^tlie indiferiminate ufe of that preparation of opium called Godfrey's cordial, many children are year- ly cut off; for it is frequently given dofe alter dole, without me deration, by ignorant women znd merce¬ nary nurfes, to t'dence the cries of infants and lull them to deep, by which they are at laft rendered ftupid, inaftive, and rickety. , r 4 ^ q Invnrv Opium is univerfally known to be ufed as a luxury in the eaft. Mr Grofe informs us, that moft of the hard-labouring people at Surat, and efpecially the por¬ ters, take great quantities of this drug, which,they pr tend, enables them to work, and carry heavier bur ens than they otherwife could do. Some of thefe, our auth aflures us, will take more than an ounce at a time without detriment. Many people in opulent arcum- ftances follow the fame cuftom, but with very different motives. Some ufe it merely for the fake of the plea fing delirium it occafions ; others for venereal purpo^ fes^ as bv this means they can lengthen the amorous res, css uj- r. «-Virv,,crVi rhev thus are the poifon wa, too ftrong to admit of any remedy j o,^ which accordingly proved true, and the unfortunate gentleman never awaked.” # ^ Opium applied externally is emollient, relaxing, and difeutient, and greatly promotes fuppuration : if long kept upon the flein, it takes off the hair, and always occafions an itching in it ; fometimes it exulcerates it, and raifes little blifters, if applied to a tender part. Sometimes, on external application, it allays pam, and even occafions fleep: but it mull by no means be applied to the head, efpecially to the futures of the fkull; for it has been known to have the moi\ terrible effeas in this application, and even to bring on death itfelf. . . , It appears,too, from fome curious experiments made ^ by Dr Leigh, to ad as the moft powerful of all ityptics. mcntai enqui. ‘‘Having laid bare the crural artery of a rabbit (fays^, i„t0the the Dodor), I divided it, when the blood inftantlyy^ flew out with confiderable velocity ; fome of a ftrong > folution was then applied to the divided artery, the ends of which in a fhort fpace of time contraded, and the haemorrhagy ceafed. The fame experiment was performed on the brachial artery with like fuccefs. The efieds of a ftrong folution of opium upon the heart, appears from the fame experiments to be very ex¬ traordinary. “ I opened the thorax of a rabbit (fays the Dodor), and by ddfedion placed the heart in full view; the aorta was then divided, and the animal bh d till it ex¬ pired. After the heart had remained motionlcfs ten mi¬ nutes, and every appearanceoflife had ceafed forthe fame St » by this means .hey cau Ungg *' — ™ .he hean a qua„.i.y of my congrefs as much as they p . 8 ^ ftro foludo. . it waa mftaut 1, throwu mto mouon. congrets as mucu as o . certain to bring on an abfolute impotency and prema¬ ture old age at laft. For this purpofe it ufually ta¬ ken in milk; and when they have a mind to check or put an end to its operation, they fwallow a fpoon ful or two of lime juice, or any fimdar acid. Befides thefe effeds of opium, it is faid by the In dians to have a very Angular one in bringing on a fteming heavinefs of the head and fletpmefs of the ey e, at the fame time that it really produces great watch- fulnefs. It is alfo confidered as a §reat m^,rer courage, or rather infenfibihty to danger ; fo that the commanders make no fcruple of allowing large qua - titles of it to the foldiers when they are going to battle or engaged in any hazardous enterpnze. The heft opium in the world is faid to come from Patna on the river Ganges, where, at leaft, the great- eft traffic of it is made, and from whence it is export¬ ed all over India ; though in fome parts, efpecia ly ©n the Malay coafts, it is prohibited under pam of death on account of the madnefs, and murders con- 9 .1 nrluVh are occanoDed by it « iengtn oi tunc, 4 # ^ ftrong folution ; it was inftantly thrown into motion, which continued t.vo minutes: I then added more of the folution, and the adion was again renewed. By thus repeating my applications, the motions of the heart were fupported more than ten minutes. I afterward* opened the thorax of a rabbit, and, without doing any injury to the large blood-veffcls, placed the heart in view. A quantity of my tlrong folution was then ap¬ plied to it, which fo accelerated the motions as to ren¬ der it impoffible to number them : by renewing the application, thefe were continued for fome conliderable time. The furface of the heart now appeared uncom¬ monly red, and continued fo fome time. Opium contains gum, refin, effentiai oil, fait, and earthy matter; but its narcotic or fomniferous power has been experimentally found to reiide ih its ejfential ° ^OPOB ALS AMUM, in the materia medica. Opo- balfam, or balm of Gilead.,; See Amvris. Mr Bruce, the celebrated traveller, wftiom we have death, on account of the madnefs, and™^ as con- f r d h ’d f to introdllce to our readers with fequem upon that madnefs, which are occafioned by^, frequemly^ ^ ^ ^ ^ his labours have fully notwithftanding which fcverc prohdntion , P employs feveral pages of his Appendix it is plentifully fmuggled into irafeertainiig the antiquity and native foil of the bah foil about the Ganges is accounted P fam.tree, with other particulars of that nature ; after the ftrongeft kind of opium ; ot 'wJlch f , f ^ bicb be gives us the following account of the opo- markable inftance is related. “ A nabob of thefe pm ts wtuen n g from6 it; “At firft when it having invited an Engldh faflory to an enteAainment, the bottle or vafe from the wound a young gentleman, a writer in the and from whence it iffues, it is of a light, yellow colour, fauntering about the gaiden, p uc be fell apparently turbid, in which there is a whitiih caft*. fucked the head of it. In ^ Xch I apprehend are the globules of air that per- into a profound fleep ; of which the . b^d vade lhe whole of it in its firft ftate of fermentation ; prifed, and likewife m ®rme flnwer^ exoreffed his it then appears very light upon ftiaking. As it fettles »lhe ‘imsthat 81,4cool“’ilturn,cUiir'milofc8thiltwh‘t Opohalfa. mum, Opucalpa fum ^ ^ ^ [ 230 ] it fir(l had when flowing from the tree into the bottle, mon ftruaure. It then has the colour of honey, and appears more fixed and heavy than at firft. After being kept for y£arfVt ^rows a much deeper yellow, and of the co¬ lour of gold. I have fome of it, which, as I have al¬ ready mentioned in my travels, I got from the Cadi of Medina in the 17685 it is now ft,11 deeper in colour, lull as much fo as the yellowed honey. It is perfectly fluid, and has loft very little either of its tafte, fmell, or weight. The fmell at firft is violent and ftronody pungent, giving a fcnfation to the brain like to that of volat.le faltswhen rafhly drawn up by an incautious perion. 1 his lafts m proportisn to its frefhnefs ; for eng neglefted, and the bottle uncorked, it quickly loies this quality, as it probably will at laft by aije whatever care is taken of it. ' 6 > “ In its pure and frefh Hate it diftolves eafilv in wa¬ ter. If dropped on a woollen cloth, it will wafh out ea- %, and leaves no itain. It is of an acrid,rough,pungent tafte ; 1S ufed by the Arabs in all complaints of the ftomach and bowels, is reckoned a powerful antifeptic, and of ufe in preventing any infeftion of the plague. Thefe qualities it now enjoys, in all probability, in common with the various balfams we have received from the new world, fuch as the balfam of Tolu, of Peru, and the reft ; but it is always ufed, and in par¬ ticular efteemed by the ladies, as a cofmetic : As fuch it has kept up us reputation in the eaft to this very i„?o rh , m™ne[of aPPlying it is this : You firft go into the tepid bath till the pores are fufficiently open- ed , you then anoint yourftlf with a fmall quantity, and as much as the vefiels will abforb. Never-fading Ss Tht f be the con^ence3 of that it £ Pur£hafe >s enough. I do not hear of eitherT 138 ^ th0llght reftorative after the lofs OPOCALPASUM, Opocar basum, or Apockl pasum ; a gummy refinous fubftance, which has a ftrong SSof Gl,he KbC'1 '^Uid n!^rh- in U f G hey mixed with myrrh. It was fficult, according to this w riter, to diftinguifh the one from the other unlcfs by their effeas. h was a fnffT8 Jn'Ce’ KhlCh frecluentIy produced lethargy «ind fudden ft tangling^* He i i feveral nfrfr,r,a u I- V .eclares’ that he has known „Z , 1 f hu f,e,i "" confequence of inadvert¬ ently taking myrrh m which there was a mixture of onocarhafiim , . . "oxiure or opoearbarum Perhaps it was o^ ” m rfct^ w!i^’rCeerays, 'TL chants had brought th£Vrce ^Dlind Jhat certain mer- good myrrh, which T , ^ COUntry of the grow in Arabia) and°th t°3 °dltT ^or 11 does n°t fake of its gum uAh t • ieyihad IJ,anted ^ ^ the the blue fluffs of Surat "wld h Mud}dmen ftarch from Mocha, in order to barte/tl7 reCei)e dama?ed and the Abyffmians 'Fh' ! th- 1 Wlth the Gall;i Mr Bruce declares that he^ha, "feen'h a"d vered w.th beautiful crimfon flowers of aTe^y Som! o P o f fr . The fame traveller obferves, that the Opocalp*. lafla gum ia well calculated, both on account of its fum> abundance and its colour, to augment the quantity of 0P0l>»na*« myrrh ; and he is the more confirmed in his opinion y ^ becaufe every thing leads him to think that no other gummiferous tree, poffeffed of the fame properties with the faffa, grows in the myrrh country In ftiort, he thinks it almoft beyond a doubt that the gum of tae faffa-tree is the opoealpafum ; and he fuopofes Galen miftaken in afenbing any fatal property to this drug ; and that many were believed to be killed by it, whole death might, perhaps, with morejuftice, have been placed to the account of the phyfician Mr Bruce adds, tuat though the Troglodites ofthe myrrh country are at prefent more ignorant tha;. formerly, they are neverthekfs well acquainted with the pro¬ perties of their fimples ; and that while they wifh to increafe the fale of their commodities, they vould never mix with them a poifon which muft neceffarily dmimifh it In this we accede to his opinion ; but we muft differ from him when he fays, that no gum or refin with which we are acquainted is a mortal poi¬ fon : the favages of both hemifpheres are acquainted with but too many of them. The gum of the faffa- tree, according to Mr Bruce, is of a clofe fmootii grain, of a brown dull colour, but fometimes very trailfparent ; ,t fwells and becomes white in .>ater ; it has a great refemblance in its properties to gum tra- gacanth, and may be eaten with all fafety. From all this it appears that the opoealpafum mentioned by P on^Dlt*tThfiafll‘ gum dtfcri! ed by Mr Bruce. OPOPANAX, in the materia medica, is a gum- refin of a tolerably firm texture, ufually brought to us m loofe granules or drops, and fometimes in large mafles, formed of a number of thefe conneded by a quanuty of matter of the fame kind; but thefe arc uiually loaded with extraneous matter, and are greatly inrenor to the pure loofe kind. The drops or gra- nules of the fine opopanax are on the outfide of a browmfh red colour, and of a dufky yellow.fh or whitifh colour within : they are of a fomewhat un&u- ous appearance, fmooth on the furface ; and are to be taile 1H C Car PleCe8, °f 3 ftr0ng fmdI and acrid 1 his gummy fubftance is obtained from the roots of an umbelliferous plant, which grows fpontaneoufiy in the warmer rnimti-iVo -,«.i 1 .1 11 r the warmer countries, and hears the colds of this. I he juice is brought from Turkey and the Eaft Indies: and its virtues are thofe of an attenuating and aperient medicine. Boerhaave frequently employed it,along with a^nnU^-CUmarndga!banum,inh5rPocondriacaldl'foMer8, obftru&ions of the abdominal vifee-a, and fuppreflions f the men Li rual evacuations from a fluggi fluids of mu¬ cous humours, and a want of due elaftieity of the fo¬ il '' -7\th thefe lnte”tiona't is an ufeful ingredient in ie pilule gummofae and compound powder of myrrh o the Eondon pharmacopoeia, but it is not employed m any compofition of the Edinburgh. It may be gi- ven^oy itfdt rn the dole of a fcruple, or half a dram : a wnole dram proves in many conititutions gently puiv ga„v=: alfo d,fpc,8 flatulencicS; j f„ a/hP” m inveterate coughs, and in diforders of the head and nerves. Doffor Woodville, in his Medical Botany, gives the follouing account of this vegetable. « It is of the “%yms orCieri and pentendria clafs of plants : the root is perennial, Tlate CCCLT ,S/./<,//('Snn > hether we fuppofe it to confift of an infinity of fmall particles propagated by a renulfive power from the luminous body, or whether we iuppofe it to confift ia the vibrations of a fubtile fluid, there are prodigious difficulties, almoft, if not totally infuperable, which will attend the explanation of its phenomena. In many parts of this work the identity of light and of the dearie fluid is afferted s this, however, doth not in the lead interfere with the phenomena of optics; all of which are guided by the fame invariable laws, whether we fuppofe light to be a vibration of that fluid, or any thing elfe. We ftial! therefore proceed to, $ 2. Difeoveries concerning the Refraction of Light. WE find that the ancients, though they made very Refradtion few optical experiments, neverthelefs knew, that whenknowa t® light pafl’ed through mediums of different denfitiea, itthe an" did not move forward in a ftraight line, but was bent,CienUJ or refracted, out of its courfe. This was probably fuggefted to them by the appearance of a ftraight flick partly immerfed in water : and we find many que- ftions concerning this and other optical appearances in. Ariftotle ; to which, however, his anfwers are infig- mficant. Archimedes is even faid to have written a treatife concerning the appearance of a ring or circk under water, and therefore could not have been igno- 3 rant ®3* OPT rant of the common phenomena of refraftion. But the ancients were not only acquainted with thefe more or¬ dinary appearances of refraftion, hut knew alfo the pro- duftion of colours by refrafted light. Seneca fays, that if the light of the fun fliines through an angular piece of glafs, it will fhow all the colours of the rainbow. Thefe colours, however, he fays, are falfe, fuch as are feen in a pigeon’s neck when it changes its pofition ; and of the fame nature, he fays, is a fpeculum, which, without having any colour of its own, affumes that of any other body. It appears alfo, that the ancients were not unacquainted with the magnifying power of glafs 3 globes filled with water, though they do not feem to And the ^ave known any thing of the reafon of this power ; magnifyingan(j t^e anc;ent engravers are fuppofed to have made slaTsglobes.ufe of a glafs globe filled with water to magnify their figures, and thereby to work to more advantage. That the power of tranfparent bodies of a fpherical form in magnifying or burning was not wholly un¬ known to the ancients, is further probable from cer¬ tain gems preferved in the cabinets of the curious, which are fuppofed to have belonged to the Druids. They are made of rock-cryftal of various forms, amongft which are found fome that are lenticular and others that are fpherical : and though they are not fufficiently wrought to perform their office as well as they might have done if they had been more judi- cioufiy executed, yet it is hardly polfible that their ef- fe&, in magnifying at leaft, could have efcaped the no¬ tice of thofe who had often occafion to handle them ; if indeed, in the fpherical or lenticular form, they were not folely intended for the purpofes of burn¬ ing. One of thefe, of the fpherical kind, of about an inch and an half diameter, is preferved among the fof- fils given to the univerfity of Cambridge by Dr Wood¬ ward. The firft treatife of any note written on the fubjedt of optics, was by the celebrated aftronomer Claudius Ptolomseus, who lived about the middle of the fecond 4 century. The treatife is loft ; but from the accounts Rehadtion 0f others we find that he treated of aftronomical re- fcientifical- fta&i°n8- Though refraftion in general had been ob- ly by Pto- ferved very early, it is poffible that it might not have lemy. occurred to any philofopher much before his time, that the light of the fun,moon, and ftars, muft undergo a fimilar refradlion in confequence of falling obliquely upon the grofs atmofphere that furrounds the earth ; and that they muft, by that means, be turned out of their redilinear courfe, fo as to caufe thofe luminaries to appear higher in the heavens than they would other- wife do. The firft aftronomers were not aware that the intervals between ftars appear lefs near the horizon than near the meridian ; and, on this account, they muft have been much embarraffed in their obfervations. But it is evident that Ptolemy was aware of this circum- ftance, by the caution that he gives to allow fome- thing for it, upon every recourfe to ancient obferva¬ tions. This philofopher alfo advances a very fenfrble hypo- 5 thefis to account for the remarkably greater apparent thdis ^con- ^lze ^ie ^un anc^ mnon when feen near the horizon, cerning the The mind, he fays, judges of the fize of objefts by horizontal means of a pre-conceived idea of their diftance from fun and U9 . an—Way in which he firit difcovered this was by toanferCd Vitellio’s experiment above mentioned, in which a fromrcfrac-piece of white paper placed at the bottom of a glais tion. veffel filled with water, and expofed to the light of the fun, appears coloured. However, he obferved, that in cafe the two furfaees of the refradling medium were exactly parallel to each other, no colours were produced. But of the true caufe of thofe colours, viz. the different refrangibility of the rays of light, 16 he had not the lead fnfpicion. This difeovery was Different referved for Sir Ifaac Newton, and which occurred Iky of’the to t^'‘e 7ear ^ t‘rat: was rays of bufied in grinding optic glaffes, and procured a light difeo-triangular glafs prifm to fatisfy himfclf concerning sfrllac the Phenorr,ena of colours. «Whilc he amufed him- Nevvtcm. ftif with this, the oblong figure of the coloured fpedtrum firii ftruek him. He was furprifed at the great dilproportion betwixt its length and breadth ; the former being about five times the meafure*»of the latter. He could hardly think that any dif¬ ference in the thicknefs of the glafs, or in the com- pofition of it, could have fuch an influence on the light. However, without concluding any thing a priori, he proceeded to examine the effedfs of thefe circumftances, and particulaily tried what would be the confequence cf tranfruitting the light through parts of the glafs that were of different thickneffes, or through holes in the windew-fhutter of different fizes ; or by fetting the prifm on the outfide of the fhutter, that the light might pafs through it, and be refradted before it was terminated by the hole. He then fufpedfed that thefe colours might arife from the light being dilated by fome unevennefs in the glafs, or fome other accidental irregularity ; and to try this, he took another prifm, like the former, and placed it in fuch a manner, as that the light, paffing through them both, might be refradfed contrary wife, and fo be returned by the latter into the fame courfc from which it had been diverted by the former. In this manner he thought that the regular effedfs of the firlt prifin would be deftroyed by the fecond ; but that the irregular ones would be augmented by the multiplicity of refradtions. The event was, that the light, which by the firii prifin was diffufed into an cblong form, was by the fecond reduced into a cir¬ cular one, with as much regularity as if it had not pafl'ed through either of them. At latl, after various experiments and conjedlures, he hit upon what he calls the experimentum cruets, and which completed this great difeovery. He took two boards, and placed one of them clofe behind the prifm at the windows, fo that the light might pafs through a frmll hole made in it for the purpofe, and fail on the other board, which he placed at the di- flance of about 12 feet; having firii made a fmall hole in it alfo, for fome of that incident light to pafs through. He then placed another prifm behind the fecond board, fo that the light which was tranfmitted through both the boards might pafs through that alfo, and be again refra&ed before it arrived at the wall. This being done, he took the firii prifm in his hand, and turned it about its axis, fo much as to make the feverai parts of the image, caft on the fecond board, fuccdfively to pafs through the hole ia it, that he I C S. Hiftory. might obferve to what places on the wall the feconj prifm would refra£l them ; and he faw, by the change of thofe places, that the light tending to that end of the image towards which the refraction of the firii prifm was made, did, in the fecond prifin, fuffer a refrac¬ tion confiderably greater than the light which tended to the other end. The true caufe, therefore, of the length of the image was difcovered to be no other, than that light is not fimilar, or homogeneal; hut that it conlrfia of rays, fome of which are more refrangible than others : fo that, without any difference in their incidence on the fame medium, fome of them (hall be more refraded than others; and therefore, that, ac¬ cording to their particular degrees of refrangi! ility* they will be tranfmitted through the prifm to different parts of the oppofite wall. Since it appears from thefe experiments that diffe¬ rent rays of light have different degrees of refrangibi- lity, it necefi'arily follows, that the rules laid down by preceding philofophers concerning the refradlivc power of water, glafs, See. mull be limited to the middle kind of rays. Sir Ifaac, however, proves that the fine of the incidence of every kind of light, conft- dered apart, is to its fine of refraction in a given ra¬ tio. This he deduces, both by experiment, and alfo geometrically, from the fuppofition that bodies refract the light by afting upon its rays in lines perpendicular to their furfaces. ^ The mod important difeovery with regard to tefrac-Mr ^0j. tion fince the time of Sir Ifaac Newton is that of Mrlond’sdif- Dollond, who found out a method of curing the c^very of _ faults of refra&ing telefcopes arifing from the different refrangibility of the rays, and which had been gene-ing rhe rally thought impoflible to be removed.—Nothwith-fouits in re- llanding the great difeovery of Sir llaac Newton con• te‘ cerningthe different refrangibility of the rays of light, e he had no idea but that they were all afttCled in the fame proportion by' every medium, fo that the refran¬ gibility of the extreme rays might be determined if that of the mean ones was given. From this it would follow, as Mr Dolland obferves, that equal and con¬ trary refra&ions mull not only deftroy each other, but that the divergency of the colours from one refradlion would likevvife be corredled by the other, and that there could be no poffibility of producing any fuch thing as refraftion which would not be affedled by the different refrangibility of light ; or, in other words, that however a ray of light might be refraded back¬ wards and forwards by different mediums, as water, glafs, &c. provided it was fo done, that the emergent ray fhould be parallel to the incident one, it would ever after be white ; and confequently, if it ffiould come out inclined to the incident, it would diverge, and ever after be coloured ; and from this it was na¬ tural to infer, that all fpherical objedl-glaffes of te¬ lefcopes mull be equally affedlcd by the different re¬ frangibility of light, in proportion to their apertures, of whatever materials they may be formed. For this reafon, Sir Ifaac Newton, and all other philofophers and opticians, had defpaired of bringing refradling telefcopes to any great degree of perfec¬ tion, without making them of an immoderate and very inconvenient length. They therefore applied them- felves chiefly to the improvement of the refle&ing te- lefcope; and the bufinefs of refraction was dropped till 1 aboul Hiftory. OPT about the year 1747, M. Euler, improving up¬ on a hint of Sir Ifaac Newton's, formed a fcheme of making objefl-glaftes of two materials, of different re- fra&ive powers : hoping, that by this difference, the refraftions would balance one another, and thereby prevent the difperfion of the rays that is occafioned by the difference of refrangibility. Thefe cbjedf glafles were compofed of two lenfes of glafs with water be¬ tween them. This memoir of M. Euler excited the attention of Mr Dollond. He carefully went overall M. Euler’s calculations, fubftituting for his hypothe¬ tical laws of refradfion thofe which had been actually afeertained by the experiments of Newton; and found, that, after this neceffary fubflitution, it followed from M. Euler’s own principles, that there could be no union of the foci of all kinds of colours, but in a lens infinitely large. M. Euler did not mean to controvert the experi¬ ments of Newton: but he faid, that they were not con¬ trary to his hypothefis, but in fo fmall a degree as might be neglefted ; and afferted, that, if they were admitted in all their extent, it would be impoffible to corredt the difference of refrangibility occafioned by the tranfmiffion of the rays from one medium into another of different denfity ; a corredfion which he thought was very pcfiible, fince he fuppofed it to be adfually effedted in the ftrudture of the eye, which in his opinion was made to confift of different mediums for that very purpofe. To this kind of reafoning Mr Hollond made n« reply, but by appealing to the ex¬ periments of Newton, and the great cireumfpedfion with which it was known that he condudted all his inquiries. In this ftate of the controverfy, the friends of M. Clairaut engaged him to attend to it; and it appear¬ ed to him, that, fince the experiments of NeuUon cited by Mr Dollond could not be queftioned, the fpeculations of M. Euler were more ingenious than ufeful. The fame paper of M. Euler was alfo particularly noticed by M. Klingenftierna of Sweden, who gave a confiderable degree ©f attention to the fubjedf, and difeovered, that, from Newton’s own principles, the refult of the 8th experiment of the fecond book of In's Optics could not anfwer his defeription of it. He found, he fays, that when light goes out of air through feveral contiguous refracting mediums, as through water and glafs, and thence goes out again into air, whether the refracting furfaces be parallel or inclined to one another, that light, as often as by con¬ trary refraCtions it is fo corrected as to emerge in lines parallel to thofe in which it was incident, continues ever after to he white; but if the emergent rays he in¬ clined to the incident, the whitenefs of the emerging light will, by degrees, in palling ©n from the place of emergence, become tinged at its edges with colours. This he tried by refraCting light with prifms of glafs, placed within a prifmatic veffel of water. By theorems deduced from this experiment he in¬ fers, that the refraftions of the rays of every fort, made out of any medium into air, are known by having the refraClion of the rays of any one fort; and alfo that the refraCb’on out of one medium into another is found as often as we have the refraCtions out of them both into any third medium. I c s. On the contrary, the S wedilh philofopher obferves, that, in this experiment, the rays of light, after paf- fing through the water and the glafs, though they come out parallel to the incident rays, will be co¬ loured ; but that the fmalier the glafs priftn is; the nearer will the refult of it approach to Newton’s deferip¬ tion. This paper of M. Klingenflierna being communi¬ cated to Mr Dollond by M. Mallet, made him enter¬ tain doubts concerning Newton’s report, and deter¬ mined him to have recotirfe to experiment. He therefore cemented together two plates of pa¬ rallel glafs at their edges, fo as to form a prifmatic veflel, when Hopped at the ends or bafes ; and the edge being turned downwards, he placed in it a glafs prifm, with one of its ecfges upwards, and filled up the vacancy with clear water; fo that the refraClion of the prilm was contrived to be contrary to that of the wa¬ ter, in order that a ray of light, tranfmitted through both thefe refradfing mediums, might be affected by the difference only between the two refractions. As he found the water to refradt more or lefs than the glafs piifm, he diminifhed or increafed the angle between the glafs plates, till he found the two contrary refrac¬ tions to be equal ; which he difeovered by viewing an objedt thro’ this double prifm. For when it appeared neither raifed nor depreffed, he was fatisfied that the refradtions were equal, and that the emergent rays were parallel tc the incident. Now, according to the prevailing opinion, he ob¬ ferves, the objedl ihould have appeared through this double prifm in its natural colour ; for if the differ¬ ence of refrangibility had been in all refpedts equal in the two equal rtfradfions, they would have redlified each other. But this experiment fully proved the fal¬ lacy of the received opinion, by fhowing the diver¬ gency of the light by the glafs prifm to be almoil double of that by the water ; for the image of the ob- jedt, though not at all refradled, was yet as much in- fedted with prifmatic colours, as if it had been feen through a glals wedge only, whofe refradting angle was near 30 degrees. i his experiment is the very fame with that of Sir Ifaac Newton’s above-mentioned, notwithflanding the refult was fo remarkably different; but Mr Dollond affures us, that he irfed all poffible precaution and care in his procefs; and he kept his apparatus by him, that he might evince the truth of what he wrote, whenever he fhould be properly required to do it. He plainly faw, however, that if the refradting angle of the water veffel could have admitted of a fuf- ficient increafe, the divergency of the coloured rays would have been greatly diminilhed, or entirely redli- fied ; and that there would have been a very great re- fradlion without colour, as he had already produced a great difcolouring without refradtion : but the incon- veniency of fo large an angle as that of the prifmatic veflel muff have been, to bring the light to an equal divergency with that of the glafs prifm whofe angle was about 60 degrees, made it neceffary to try fome experiments of the fame kind with fmaller angles. Accordingly, he got a wedge of plate glafs, the angle of whiclvwas only nine degrees ; and uling it in the fame circumftancee, he increafed the angle of the water 237 238 OP T water wedge, in which it was placed, till the diver¬ gency of the light by the water was equal to that by the glafs ; that is, till the image of the objedf, though confiderably refracted by the excefs of the refraction of the water, appeared neverthelefs quite free from any colours proceeding from the different refrangibility of the light; and, as near as he could then iheafure, the refraction by the water was about -J- of that by the glafs. He acknowledges, indeed, that he was not very exaCt in taking the meafures, becaufe his bufi* > nefs was not at that time to determine the exaft pro¬ portions, fo much as to fhow that the divergency of the colours, by different fubflances, was by no means in proportion to the refradfions, and that there was a poffibility of refraftion without any divergency of the light at all. \ As thefe experiments clearly proved, that different fubftances made the light to diverge very differently in proportion to their general refra&ive power, Mr Hollond began to fufpeCl that fuch variety might pof- fibly be found in different kinds of glafs, efpecially as experience had already fhown that fome of the kinds made much better objeCl-glaffes in the ufual way than others ; and as no fatisfaftory caufe had been affigned for fuch difference, he thought there was great reafon to prefume that it might be owing to the different divergency of the light in the fame refrac¬ tions. His next bufmefs, therefore, was to grind v/edges of different kinds of glafs, and apply them together ; fo that the refradfions might be made in contrary di¬ rections, in order to difeover, as in the above-mention¬ ed experiments, whether the refraCtion and the diver gency of the colours would vanith together. But a confiderable time elapfed before he could fet about , that work : for though he was determined to try it at his leifure, for fatisfying his own curiofity, he did uot expeCt to meet with a difference fufficient to give room for any great improvement of telefcopes, fo that it was not till the latter end of the year 1757 that he undertook it; but his firfl trials convinced him that the bufmefs deferved his utmoft attention and ap¬ plication. He difeovered a difference far beyond his hopes in the refraftive qualities of different kinds of glafs, with refpeCt to the divergency of colours. The yellow or ftrawr-coloured foreign fort, commonly called Venice glafs ; and the Englifh crown glafs, proved to be very nearly alike in that refpeCt ; though, in general, the crown glafs feemed to make the light diverge the lefs of the two. The common Engliih plate-glafs made the light diverge more ; and the white cryflal, or Eng¬ lifh flint glafs, moft of all. It was now “his bufinefs to examine the particular qualities of every kind of glafs that he could come at, not to amufe himfelf with conjeCtures about the caufe of this difference, but to fix upon two forts in which it fhould be the greateft ; and he foon found thefe to be the crown glafs and the white flint glais. He therefore ground one wedge of white flint, of about 25 degrees ; and another of crown glafs, of about 29 degrees : which refraded very nearly alike, but their power of making the colours diverge was very diffe¬ rent. He then ground feveral others of crown glafs to different angles, till he got one which was equal, ICS. Hiftory,’ with refpeft to the divergency of the light, to that in the white flint-glafs: for when they were put toge¬ ther, fo as to rcfraCh in contrary diredfions, the re- fraCted light was entirely free from colours. Then meafuring the refradfion of each wedge with thefe dif¬ ferent angles, he found that of the white glafs to be to that of the crown glafs nearly as two to three : and this proportion held very nearly in all fmall angles ; fo that any two wedges made in this proportion, and ap* plied together, fo as to refradl in a contrary direc¬ tion, would refradt the light without any difperflon of the rays. In a letter to M. Klingenflierna, quoted by M. Clairaut, Mr Dollond fays, that the fine of incidence in crown glafs is to that of its general refradlion as I to 1.53, and in flint glafs as 1 to 1.583. To apply this knowledge to pradfice, Mr Dollond went to work upon the objedf-glaffes of telefcopes ; not doubting but that, upon the fame principles on which a refradled colourlefs ray was produced by prifms, it might be done by lenfes alfo, made of fimilar mate¬ rials. And he fucceeded, by coniidering, that, in or¬ der to make two fpherical glaffes that fliauld refradf the light in contrary diredtions, the one mull be con¬ cave and the other convex ; and as the rays are to con¬ verge to a real focus, the excefs of refradfion muff evidently be in the convex lens. Alfo, as the convex glafs is to refradt the moft, it appeared from his expe¬ riments, that it muft be made of crown glafs, and the concave of white flint glafs. Farther, as the refrac¬ tions of fpherical glafles are in an inverfe ratio of their focal diftances, it follows, that the focal diftances of the two glafles fhall be inverfely as the ratios of the refradtions of the wedges ; for being thus proportion¬ ed, every ray of light that pafles through this combined glafs, at whatever diftance it may pafs from its axis, will conftantly be refradfed, by the difference between two contrary refradtious, in the proportion required ; and therefore the different refrangibility of the light will be entirely removed. Notwith(landing our author had thefe clear grounds in theory and experiment to go upon, he found that he had many difficulties to ftruggle with when he came to reduce them into adtual pradlice ; but with great patience and addrefs, he at length got into a ready method of making telefcopes upon thefe new principles. His principal difficulties arofe from the following circumftanccs. In the firft place, the focal diftances, as well as the particular furfaces, muff be very nicely pro¬ portioned to the denfities or refradling powers of the glaffes, which are very apt to vary in the fame fort of glafs made at different times/ Secondly, The centres of the two glaffes muft be placed truly in the common axis of the telefcope, otherwife the defired effeit will be in a great meafure deftroyed. Add to thefe, that there are four furfaces to be wrought perfeflly fpheri¬ cal ; and any perfon, he fays, but moderately prac- tifed in optical operations, will allow, that there muft be the greateft accuracy throughout the whole work. At length, however, after numerous trials, and a- re- folute perfeverance, he was able to conftruit refradling tclefcopes, with fuch apertures and magnifying pow¬ ers, under limited lengths, as, in the opinion of the bell judges, far excetxled any thing that had been pro¬ duced Hiftoiy* o p T duced before, repre fen ting objefia ■with great diftinc' nef?, and in their true colours. It was objected to Mr Doilond’s difcover)', that the fmall dvfperfion of the rays in crown glafs is only ap¬ parent, owing to the opacity of that kind of glafs which does not tranfmit the fainter coloured rays in a fufficient quantity ; but Hu's obie&ion is particularly coniidered, and anfwered by M. Beguelin. As Mr Dollond did not explain the method, wh’ h he took in the choice of different fpheres proper to deftroy the efftft of the different refrangibihty of the rays of light, and gave no hint that he himtelf had any rule 10 direft himfelf in it; and as the calculation of the difperfion of the rays, in fo complicated an af¬ fair, is very delicate; M. Clniraut, who had given a good deal of attention to this fubjedt, from the begin, ning of the controverfy, endeavoured to make out a complete theory of it. Without fume afiillance of this kind, it is impoi- fible, fays this author, to conllruft telefcopes of equal goodnefs with thofe of Mr Dollond, except by a fer- vile imitation of his ; which, however, on many ac¬ counts, would be very unlikely to anfwer. Befides, Mr Dollond only gave his proportions in general, and pretty near the truth ; whereas the greateft poffible preciiion is neceffary. Alfo the belt of Mr Dolland’s te¬ lefcopes were far fhort of the Newtonian ones (a) ; whereas it might be expefted that they fhm Id exceed them, if the foci of all the coloured rays could be as perfectly united after refraction through glaft, as after reflexion from a mirror; fince there is more light loft, in the latter cafe than in the former. With a view, therefore, to affift the artift, he en¬ deavoured to afeertain the refvaCtive power of different kinds of glals, and aiio their property of feparating the rays of light, by the foilowung exait methods. He made ufe of twm prifms placed clofe to one another, as Mr Dollond had done: hut, inftead of looking through them, he placed them in a darkened room ; and when the image of the fun, tranfmitted through them, was perfe&ly white, he concluded that the different re- frangibility of the ra^s was correfted. In order to afeertam with more eafe the true angles that prifms ought to have to deftroy the effetff of the difference of refrangibility, he conftrmfted one which had one of its furfaccs cylindrical, with feveral degrees of amplitude. By this means, without changing his prifms, he had the choice of an infinity of angles ; among which, by examining the point of the curve furface, which, receiving the folar ray, gave a white image, he could eafily find the true one. He alfo afeertained the proportion in which diffe¬ rent kinds of glafs feparated the rays of light, by mea- furing, with proper precautions, the oblong image of the fun, made by tranfmitting a beam of light through them. In making thefe experiments, he hit upon an eafy method of convincing any perfon of the greater refraftive power of Englifh flint-glafs above the com¬ mon French glnfs, both with refpeft to the mean re- fradion, and the different refrangibility of the co.- (a) This affertion of M. Clairaiit might .be true at prefeot. I C S* 239 lours; for having taken two prifms, of thefe two kinds of glafs, but equal in all other refpedls, and placed them fo that they received, at the fame time, two rays of the fun, with the fame degree of incidence, he faw, that, of the two images, that which was pro¬ duced by the Englifh^flint-glafs was a little higher up on the wall than the other, and longer by more than one half. M. Clahaut was aflifted in thefe experiments by M. De Tournieres, and the refults agreed with Mr Doi¬ lond’s in general; but whereas Mr Dolland had made the diiperfion of the mys in giafs and in water to be as five to four (acknowledging, however, that he did not pretend to do it with exa&nefs), thefe gentlemen, who took more pains, and ufed more precautions, found it to be as three to two. For the theorems and prob¬ lems deduced by M. Clairaut from thefe new principles of optics, with a view to che perfection of telefcopes, we muft‘refer the reader to Mem. 4cad. Par. 1756-, 1757* The labours of M. Clairaut were fucceeded by thofe of M. D’Alembert, which feem to have given the ma¬ kers of thefe achromatic telefcopes all the aid that cal¬ culations can atFord them. This excellent mathemati¬ cian has Hkewife propofed a variety of new conftruc- tions of thefe telefcopes, the advantages and difadvan- tages of which he diftinftly notes ; at the fame time that he points out feveral methods of correcting the errors to which they are liable : as by placing the ob- eCl-glaffes, in fome cafes, at a fmail diflance from one another, and fometirnes by uling eye-glaffes of diffe¬ rent refiaCtive powers; which is an expedient that feems not to have occurred to any perfon before him. He even fhows, that telefcopes may be made to ad¬ vantage, confifting of only one oljcCt-glafs, and an eye glafs of a different refraCtive power. Some of his conftruCtions have two or more eye-glaffes of different kinds of glafs. This fubjeCt he coniidered at large in one of the volumes of his Opufcules Mathemaiiques. We have alfo three me-moirs of M. D’Alembert up¬ on this fubjeCt, among thofe of the French Acade¬ my ; one in the year 1764, another in 176 c, and a third in 1 767. At the conclufion of his fecond memoir he fays, that he does not doubt, but, by the different methods he prepofes, achromatic telefcopes may be made to far greater degrees of perf'eCHon than any that have been feen hitherto, and even fuch as is hardly cre¬ dible : And though the crown glafs, by its greenifh colour, may abforb fornepart of the red or violet rays, which, however, is not found to be the cafe in fad ; that obje&ion cannot be made to the common French glafs, which is white, and which on this account he thinks muft be preferable to the Englilh crewn glafs. Notwitbftanding Meffrs Clairaut and D’Alembert feemed to have exhauited the bufinefs of calculation on the fubjeCt of Mr Doilond’s telefcopes, no ufe could be made of their labours by foreign artifts. For ftili the telefcopes made in England, according to no exaCt. rule, , time that it was made, but it is by no means fo afe C 240 OPT rule, as frtretVners fuppofed, were greatly fuperior to any that could l prifms, or in the difpofition of them, which he did not think it worth his while to exa-mine. It is alfo obfervable, that Sir Ifaac is not fo particular in his defeription of his prifms., and other parts of his apparatus, in his account of this experiment, as he geneially is in other cafes; and therefore, probably, wrote his account of it from his memory only In reality, it is no refledtion upon Sir Ifaac Newton, who did fo much, to fay that he was miftaken in this par¬ ticular cafe, and that he did not make the difcovery that Mr Dollond did ; though it be great praife to Mr Dollond, and all thofe perfons who contributed to Vol.XIII. Part I. I 0 S. 241 this difcovery, that they ventured to call in queftion the authority of fo great a man. Mr Dollond, however, was not the only optician who had the merit of making this difcovery ; it had been made and applied to the fame purpofe by a pri¬ vate gentleman—Mr Cheft of Cheft-hall. He had obferved that prifms of flint glafs gave larger fpec- trums than prifms of water when the mean refradtion was the fame in both, i. e. when the deviation of the refradted ray from the diredfion of the incident was the fame. He tried prifms of other glafs, and found fimilar differences ; and he employed the difcovery in the fame manner, and made achromatic experiments fome time before Dollond. Thefe fadls came out in a procefs raifed at the inftance of Watkius optician at Charing-crofs, as alfo in a publication by MrRamfdea optician. There is, however, no evidence that Dol¬ lond Hole the idea from Mr Cheft, or that they had not both claims to the difcovery. Still the beft refradting telefcopes, conftrudted on the principles of MrDollond, are defedtive, on account of that colour which, by the aberration of the rays, they give to objedts viewed through them, unlefs the object glafs be of fmall diameter. This defedt men of genius and fcience have laboured to remove, fome by one contrivance and fome by another. Father Bofo- wich,to whom every branch of optics is much indebt¬ ed, has, in his attempts for this purpofe, difplayed much£)jfcovery ingenuity; but the philofopher whofe exertions have of Dr Ro- been crowned with moft fuccefs, and w'ho has perhapsUert ^lair made the moft important difcovery in this branch of fcience fince. the era of Newton, is Dr Robert Blair regius profeffor of aftronomy in the college of Edin¬ burgh. By a judicious fet of experiments ably con- dudted, he has proved, that the quality of difperfing the rays in a greater degree than crown glafs, is not confined to a few mediums, but is poffeffed by a great variety of fluids, and by fome of thefe in a molt ex¬ traordinary degree. He has fhown, that although the greater refrangibility of the violet rays than of the red rays, when light paffes from any medium whatever into a vacuum, may be confidered as a law of nature ; yet in the paffages of light from one medium into ano¬ ther, it depends entirely on the qualities of the me¬ diums which of thefe rays ftiall be the moft refran¬ gible, or whether there fhali be any difference in their refrangibility. In order to corredt the aberration ari- fing from difference of refrangibility among the rays ofiight, he inftituted a fet of experiments, in the con- dudting of which he detedted a very Angular and im¬ portant quality in the muriatic acid. In all the di- fperfive mediums hitherto examined, the green rays, which are the mean refrangible in crown glafs, were found among the lefs refrangible; but in the muriatic acid, thefe fame rays were by him found to make a part of the more refrangible. This difcovery led to complete fuccefs in removing the great defedt of opti¬ cal inftruments, viz. that difiipation or aberration of the rays which arile from their unequal refrangibility, and has hitherto rendered it impoffible to converge ail of them to one point either by lin^le or oppofite re¬ fractions. A fluid, in which the particles of marine acid and metalline particles hold a due proportion, at the fame time that it ieparates the extreme rays of the H Jr fpedtrum ' 242 ao Of the rc- fratftion of thp a'mo- fphere. OPT fpedlrum much more than eiown glafs, refracts all the orders of the rr.ys in the fame proportion that glafs dees : and hence rays of all colours made to diverge by the refradlion of the glafs, may either be rendered parallel by a fubkcjuent refradtion made m the coniine of the glafs and this fluid ; or, by weakening tae ^re- fradive denfity of the fluid, the refraction which takes place in the confine of it and glafs may be rendered as regular as refledion,without the teait colour whatever. The £)odtor has a telefcope, not exceeding 15 inches in length, with a compound object glafs of this kind, which equals in all re 1 pedis, if it does not furpafs, the bcfl of Doilond’s 42 inches long. Of thisobjedi glafs a figure will be found in the third volume of the 1 ranf- adtions of the Royal Society of Edinburgh; and to that volume we rnuft refer our readers for a full and per 4'picuous account of the experiments which led to this difeovery, as well as of the important purpofes to which it may be applied. We Hull conclude the hiftory of the difeoveries con¬ cerning refradlion, with fome account of the refrac¬ tions of the attnoiphere.—Tables of this have been calculated by Mr Lambert, with a view to corredl the inaccuracies of geometrical obfervat ons of the alti¬ tudes of mountains. The obfervations of Mr Lam¬ bert, however, go upon the fuppontion tnat the refrac¬ tive power of the atmofphere is invariable : But this is by no means the cafe ; and therefore hi rules mult be confidered as true for the mean Hate of the air only. A moll remarkable variety in the refradtive power of the atmofphere was obferved by Dr Nettleton, near Halifax in Ycrklhire, which demonftrates how little we can depend upon the calculated heights of moun¬ tains, when the obfervations are made with an inflru ment, and the refradtive power of the air is to be al¬ lowed for. Being defirous to learn, by obfervation, how far the mercury would deicend in the barorr eter at any given elevation (for which there is the belt op¬ portunity in that hilly country), he propofed to take the height of fome of their higheit hills; but when he attempted it, he found his obfervation fo much dif- turbed by refradtion, that he could come to no cer¬ tainty". Having meafured one hill of a conliderable height, in a clear day, and obferved the mercuiy at the bottom and at the top, he found, according to that eftimation, that about 90 feet or more were required to make the mercury fall Toth of an inch ; but after¬ wards, repeating the experiment on a cloudy day, when the air was rather grofs and. hazy, he found the fmall angles fo much increafed by refiadtion as to make the hill much higher than before. He afterwards fre¬ quently made obfervations at his own houfe, by point- ing a quadrant to the tops of fome neighbouring hits, and obferved that they would appear higher in the morning before funrife, and alfo late in the evening, than at noon in a clear day, by feveral minutes. In one cafe the elevations of the fame hill differed more than 30 minutes. From this he infers, that obferva¬ tions mate on very high hills, efpecially when viewed at a diftance, and under fmall angles, as they generally are, are probably uncertain, and not much to be de¬ pended upon. M. Euler confidered with great accuracy the refrac¬ tive power of the atmofphere, as affedted by different I C S. Hiftory, degrees of heat and elallicity; in which he fhovvs, that its refradtive power, to a coafidcraSle diflance from the zenith, is fufli iently near the proportion of the tan¬ gent of that diltance, and that the law of refradtion follows the direit ratio of the height of the barometer, ami the inverfe ratio of the difference marked by the th-ermometer ; but when liars are in the horizon, the changes are in a ratio fome what greater than this, more efpeciaily on account of the variation in the heat. The caule of the twinkling oi the liars is now ge- 2r, nenlly acknowledge l to be tire unequal refradtion of ^bj, light, in confequeKce of inequalities and undulations . ]on cnn_ in the atmofphere. cerning the Mr Michell fuppofes that the arrival of fewer or l'vvin'ihn^ more rays at one time, efpeciaily from the fmaller or itar3* the more remote fixed ftars, m y make fuch an une¬ qual imprefiion u, on the eye, as mayr, at lealt, have lome lb re in producing this effect ; fince it may be fuppofed, that evi n a ling! particle of light is fufficient to make a fenfible impreffii n upon the organs of fight; fo that very few particles arriving at the eye in a fe- cond of time, perhaps no more than three or four, may¬ be fufficient to m ke an objedt conltantly vifible. For though the impreffion may be confidered as momenta¬ ry, yet the perception occafioned by it is of fome du¬ ration. Hence, he fays, it is not improbable that the number ol the particles of light which enter the eye in a fecond of time, even from Sirius himfelf (the light of which does not exceed that of the fmallell vifible fixed itar, in a greater proportion than that olTrbout xoo. to 1), may not exceed 3000 or 400 ’, and from liars of the fecond magnitude they may, therefore, probably not exceed 100. Now the apparent incrcafe and diminution of the light which we obferve in the twinkling of tire liars, feemsto be repeated at not very unequal intervals, perhaps about four or five times in a fecond. He therefore thought it reafonable to fup- pofe, that the inequalities which will naturally arife from the chance of the rays coming fomttimes a little denftr, and fometimts a little larer, in fo fmall a num¬ ber of them as mud fall upon the eye in the fourth or fifth part of a fecond, may be fufficient to account for this appearance An addition ol two or three par¬ ticles of fight, or perhaps a iingle one, upon 20, efpe¬ cially if there Ihould be an equal deficiency out of the next 20, would, he fuppofed, be very fenfible, as he thought was probable from the very great difference in the appearance of liars, the light of which does not differ fo much as is commonly imagined. The light of the middlemolt liar in the tail of the Great Bear does not, he thinks, exceed the light of the very fmail liar that is next to it in a greater proportion than that of about 16 or 20 to 1 ; and M. Bouger found, that a difference in the light of objects of one part in 66 was fufficiently dillinguifhable. It will perhaps, he lays, be objedted, that the rays coming from Sirius are too numerous to admit of a fufficient inequality arifing from the common effect of chance fo frequently as would be neceffary to produce this effect, whatever might happen with refpeSt to the firraller liars ; but he obferves, that, till we know what inequality is neceffary to produce this effect, we can only guefs at it one way or the other. Since thefe obfervations were publilhed, Mr Michell has entertained fome fufpicioa that the unequa. d-n- 5 {ity 243 Hiftory. OPT fjty ofllght does not contribute to this effe& in fo great a degree as he had imagined, efpecially in con- fequence of obferving that even Venus does fometimes twinkle. This he once obferved her to do remarkably when fhe was about 6 degrees high, though Jupiter, which was then about 16 degrees high, and was fen- fibly lefs luminous, did not twinkle at all. If, not- withftanding the great number of rays which, no doubt, come to the eye from fuch a furface as this planet pre- fents, its appearance be liable to be affefted in this mauntr, it muft be owing to fuch undulations in the atmofphere, as will probably render the effect of every other caufe altogether infonfible. The conjefture, however, has fo much probability in it, that it well de- ferved to be recited. 22 M. Mufchenbroek fufpedts, th&t the twinkling of Mr Mui- the ftars arifes from feme affedtion of the eye, as well ©rinion^ ^Sas t^ie ^ate T'le atm°fpbere For he fays, that in Holland, when the weather is frofty, and the iky very clear, the ftars twinkle moft manifeftly to the naked eye, though not in tekfeopes; and finee he does not fuppoft that there is any great exhalation, or dancing of the vapour at that time, he queftions whether the vivacity @f the light affedfing the eye may not be con¬ cerned in the phenomenon. But this philofopher might very eafily have fatisfied himfelf with refpedt to this hypatbefis, by looking at the ftars near the zenith, when the light traverfes but a fmall part of the atmofphere, and therefore might he expedted to affedl the eye the moft fenfibly. For he would not have perceived them to twinkle near fo much, as they do near the horizon, when much more of their light is intercepted by the atmofphere. Some aftronorrers have lately endeavoured to ex¬ plain the twinkling of the fixed ftars by the extreme rninutehefs of their apparent diameter ; fo that they fuppofe the fight of them is intercepted by everyr more that floats in the air. But Mr Michell obferves, that no object can hide a ftar from us that is not large enough to exceed the apparent diameter of the ftar, by the diameter of the pupil of the eye ; fo that if a liar was a mathematical point, the interpofing objedt muft ftill be equal in fize to the pupil of the eye : nay, it nuift be large enough to hide the ftar from both eyes at the fame time. Befitles a variation in the quantity of light, a mo¬ mentary change of colour has likewife been obferved in fome of the fixed ftars. Mr Melville fays, that when one looks ftedfaftly at Sirius, or any bright ftar not much elevated above the horizon, its colour feems not to be conftantly white, but appears tindtured, at everv twinkling, with red and blue. This obfervation Mr Melville puts among his queries, with refpedf to which he could not entirely fatisfy himfelf; and he obferves, that the fiparation of the colours by the re- fra&ive power of the atmofphere is, probably, too fmall to be perceived. But the fuppofition of Mr Mi¬ chell above-mentioned will pretty well account for this circumfiance, though it may be thought inadequate to the former cafe. For the red and blue rays being much fewer than thofe of the intermediate colours, and therefore much more liable to inequalities, from the common effedf of chance, a fniall excefs or defedl in either of them will make a very ftnfible difference l'n the colour of the ftars. I c s. § 3. 2)1 cov.Ties eoncernitig the RefcPaon of Light. However much the ancients might have been mif-Account of taken with regard to the nature of light, we find that the difeove- they were acquainted with two very important obfer-ries.of 'vations concerning it; viz. that light is propagatedanLient** in right lines, and that the angle of incidence is equal to the angle of refledfion. Who it was that firft made thefe important obfervations is not known. But in¬ deed, important as they are, and the foundation of a great part of even the prefent fyftem of optics, it is pofiible chat, if he were known, he might not be al¬ lowed to have any fhare of merit, at leaft for the former of them ; the fadf is fo very obvious, and fo eafily af- certained. As to the latter, that the angle of incidence is equal to the angle of reflectionit was probably firft difeovered by obferving a ray of the fun refledled from the furface of water, or fome other poliftied body ; or from obferving the images of objedls reflec¬ ted by fuch furfaces. If philofophers attended to this phenomenon at all, they could not but take notice, that, if the ray fell nearly perpendicular upon fuch a furface, it was refl- died near the perpendicular ; and if it fell obliquely, it was refledted obliquely : and if they thought of applying any kind of me a fares to thefe angles, however coarfe and imp^fedl, they could not but fee that there was fufficient reafou to aflert their equality. At the fame time they could not but know that the incident and refledted rays werg both in the fame plane. Ariftotle was fenfible that it is the refledtion of light from the atmofphere which prevents total darknefs after the fun fets, and in places where he doch not fhine in the day-time. Fie was alfo of opinion, that rainbows, halos, and mock funs, were all occafioned by the refledtion of t'he fim-beams in different circum- ftances, by which an imperfedt image of his body was produced, the colour only being exhibited, and not his proper figure. The image, he fays, is not Jingle, as in a mirror ; for each drop of rain is too fmall to refledl a vifible image, but the conjundtion of all the images is vifible. Without, inquiring any farther into the nature of Euclid’s light or vifion, the ancient geometricians contentedtreatile of themfclves with deducing a fyftem of optics from the °Ptics. two obfervations mentioned above, viz. the redtilinear progrefs of light, and the equality of the angles wf incidence and refledtion. The treatife of optics which has been aferibed to Euclid is employed about deter¬ mining the apparent fize and figure of objedts, from the angle under which they-appear, or which tire extre¬ mities of them fubtend at the eye, and the apparent place of the image of an objedt refledted from a po- lifhed mirror; which he fixes at the place where the refledted ray meets a perpendicular to the mirror drawn through the objedt. But this work is fo imperfedt, and fo inaccurately drawn up, that it is not general¬ ly thought to be the produc/ion of that g reat geome¬ trician. It appears from a circumftance in the hiftory of So- 25 crates, that the effedts of burning-glaffes had alfo0fthe been obferved by the ancients ; and‘it is probable that the Romans had a method of lighting their facred fire the anci» by means of a concave fpeculum. It feems indeed to eats, have been known pretty early, that there is an in- H h 2 create •J44 Plate CCCLII. 26 Of fteing images in she air. OFT creafe of heat in the place where the rays of light meet, when they are reflected from a concave mirror. The burning power of concave mirrors is taken notice of by Euclid in the fecond book of the treatife above- Bientioned. If we give but a fmall degree of credit to what fome ancient hiftorians are faid to have writ¬ ten concerning the exploits of Archimedes, we fhall be induced to think that he made great ufe of this principle, in conftru&ing fome very powerful burning- mirrors ; but nothing being faid of other perfons ma¬ king ufe of his inventions, the whole account is very doubtful. It is allowed, however, that this eminent geometrician did write a treatife on the fubjeft of burn¬ ing-mirrors, though it be not now extant. B. Porta fuppofes that the burning-mirrors of the sncients were of metal, in the form of a fe&ion of a parabola. It follows from the properties of this curve, that all the rays which fall upon it, parallel to its axis, will meet in the fame point at the focus. Confequent- ly, if the vertex of the parabola be cut off, as in fig. 1. it will make a convenient burning-mirror. In fome drawings of this indrument the fruftum is fo fmall, as to look like a ring. With an inftrument of this kind, it is thought, that the Romans lighted their fa- cred fire. Some have alfo thought that this was the form of the mirror wMi which Archimedes burnt the Roman fleet; ufing either a lens, to threw the rays parallel, when they had been brought to a focus; or applying a fmaller parabolic mirror for this purpofe, as is reprefented fig. 2. ButDechales fiiows*that it is im- poffible to convey any rays in a direftion parallel to one another, except thofe that come from the fame point in the fun’s diflc. All this time, however, the nature of refleftion was very far from being underftood. Even lord Bacon, who made much greater advances in natural philofo- phy than his predeceffors, and who pointed out the true method of improving it, was fo far deceived with regard to the nature of refleftion and refraftion, that he fuppofed it pofiible to fee the image reflefted from a looking-glafs, without feeing the glafs itfelf; and to this purpofe he quotes a ftory of friar Bacon, who is reported to have apparently walked in the air between two fteeples, and which was thought to have been ef¬ fected by reflection from glaffes while he walked upon the ground. The whole bufinefs of feeing images in the air may be traced up to Vitellio; and what he faid upon the fubjeCt feems to have palled from writer to writer, with confiderable additions, to the time of lord Bacon. What Vitellio endeavours to fhow is, that it is poffible, by means of a cylindrical convex fpeculum, to fee the images of objeCts in the air, out of the fpeculum, when the objeCts themfelves cannot be feen. But, if hisde- fcription of the apparatus requifite for this experiment be attended to, it will be feen that the eye was to be directed towards the fpeculum, which w'as placed with¬ in a room, while both the objeCt and the fpeCtator were without it. But though he recommends this ob- iervation to the diligent lludy of his readers, he has not defcribed it in fuch a manner as is very intelli¬ gible ; and, indeed, it is certain, that no fuch effeCt can be produced by a convex mirror. If he himfelf «id make any trial with the apparatus that he defcribes I C S. Hiftoryb for this purpofe, he mull have been under fome deccp. tion with refpeCt to it. B. Porta fays, that this effeft may be produced by a plane mirror only; and that an ingenious perfon may fucceed in it but his more particular defcription of a method to produce this extraordinary appearance is by a plane mirror and a concave one combined. Kircher alfo fpeaks of the poffibility of exhibiting thefe pendulous images, and fuppofes that they are re¬ flected from the denfe air ; and the moft perfeft and pleafing deception depending upon the images in the air is one of which this writer gives a particular ac¬ count in his sirs Magna Lucis et Umbra:, p. 783. In this cafe the image is placed at the bottom of a hollow polifhed cylinder, by which means it appears like a real folid fubftance, fufpended within the mouth of the veffel. In this manner, he fays, he once exhibited a reprefentation of the afeenfion of Chrift ; when the images were fo perfeCt, that the fpeftators could not be perfuaded, but by attempting to handle them, that they were not real fubftances. Among other amufing things that were either in¬ vented or improved by Kircher, was the method of throwing the appearance of letters, and other forms of things, into a darkened room from without, by means of a lens and a plane mirror. The figures or letters were written upon the face of the mirror, and invert¬ ed ; and the focus of the lens was contrived to fall up¬ on the fereen or wall that received their images. In this manner, he fays, that with the light of the fun he could throw a plain and diftinft image 500 feet. It was Kepler who firft difeovered the true reafon DifcovtrJ^, of the apparent places of objefts feen by reflecting mir-of Kepler, rars, as it depends upon the angle which the rays of light, iffuing from the extreme part of an objeCt, make with one anether after fuch reflections. In plane mir¬ rors thefe rays are reflected with the fame degree of inclination to one another that they had before their incidence ; but he fhows that this inclination ia chan¬ ged in convex and concave mirrors. Mr Boyle made fome curious obfervations concern- ^ xng the reflecting powers of differently coloured fub- B fiances. Many learned men, he fays, imagined that fnow affeCts the eyes, not by a borrowed, but by.a native light; but having placed a quantity of fnow in a room from which all foreign light was excluded, nei¬ ther he nor any body elfe was able to perceive it. To try whether white bodies refieCt more light than others, he held a fheet of white paper in a fun-beam admit¬ ted into a darkened room ; and obferved that it reflec¬ ted much more light than a paper of any other colour, a confiderable part of the room being enlightened by it. Farther, to fhow that white bodies refleCt the rays outwards, he adds, that common burning-glaffes will not of a long time burn or difcolour white paper. When he was a boy, he fays, and took great pleafure in making experiments with thefe glaffes, he was much furprifed at this remarkable circumftance ; and it fet him very early upon gueffing at the nature of white- nefs, efpecially as he obferved that the image of the*, fun was not fo well defined upon white paper as upon black ; and as, when he put ink upon the paper, the moifture would be quickly dried up, and the paper, which he could not burn before, would prefently take 6 OPT fire. He atfo found, that, by expofmg his hand to the fun, with a thin black glove upon it, it would be fuddenly and more confiderably heated, than if he held his naked hand to the rays, or put on a glove of thin white leather. To prove that black is the reverfe of white, with refpeft to its property of refitting the rays of the fun, he procured a large piece of black marble ; and having got it ground into the form of a large fpherical con¬ cave fpeculum, he found that the image of the fun re- flefted from it was far from offending or dazzling his eyes, as it would have done from another fpeculum ; and though this was large, he could not in a long time fet a piece of wood on fire with it ; though a far lefs fpeculum, ef the fame form, and of a more refle&ing fubftance, would prefently have made it flame. To fatisfy himfelf flill farther with refpeft to this fubjeft, he took a broad and large tile ; and having made one half of its furface white and the other black, heexpofed it to the fummer fun. And having let it lie there fome time, he found, that while the whited part remained cool, the part that was black was grown very hot. For his farther fatisfaftion, he fometimes left part of the tile of its native red ; and, after expo- fxng the whole to the fun, obferved that this part grew hotter than the white, but was not fo hot as the black part. He alfo obferves, that rooms hung with black are not only darker than they would otherwife be, but warmer too ; and he knew feveral perfons, who found great inconvenience from rooms hung with black. As another proof of his hypothefis, he informs us, that a virtuofo, of unfufpedted credit, acquainted him, that, in a hot climate, he had feen eggs well roafted in a fhort time, by firft blacking the fhells, and then expo- fing them to the fun. We have already taken notice of the remarkable fuf/nVf1 ProPerty l>gnum nephriticum firft obfervcd by Kir- Jienum ne-cher. (See Guilanbina.) However, all his obfer- phricicum. vations with regard to it fell very fhort of Mr Boyle. He defcribes this lignum nephriticum to be a whitifh kind of wood, that was brought from Mexico, which the natives call coatl or tlapa%atliy and which had been; thought to tinge water of a green colour only ; but he fays that he found it to communicate all kinds of colours. If, fays he, an infufion of this wood be put into a glafs globe, and expofed to a ftrong light, it will be as colourlefs as pure warer ; but if it be carried into a place a little fhaded, it will be a moft beautiful green. In a place ftill more fhaded, it will incline to red ; and in a very fhady place, or in an opaque vefiel, it will be green again. A cup of this remarkable wood was fent to Kir- cher by the procurator of his fociety at Mexico, and was pvefented by him to the emperor as a great curi- ofity. It is called lignum nephriticum, becaufe the in¬ fufion of it was imagined to be of fervice in difeafes of the kidneys and bladder, and the natives of the country where it grows do make ufe of it for that pur¬ pose. Mr Boyle corretfted feveral of the hafty obfervations of Kircher concerning the colours that appear in the infufion of lignum nephriticum, and he diverfified the experiments with it in a very pleafing manner. He firft diftin&ly noted the two very different colours which this remarkable tinfture exhibits by tranfmit- I O SL ted and refle&ed light. If, fays he, it be held di’re&* ly between the light and the eye, it will appear tin¬ ged (excepting the very top of it, where a fky-colour- ed circle fometimes appears) almoll of a golden colour, except the infufion be too ftrong ; in which cafe it will be dark or reddifli, and requires to be diluted with water. But if it be held from the light, fo that the eye be between the light and the phial, it will appear of a deep lovely blue colour ; as will alfo the drops, if any lie on the outfide of the glafs. When a little of this tin&ure was poured upon a fheet of white paper, and placed in a window where the fun could fhine upon it, he obferved, that if he turned his back upon the fun, the ftiadow of his pen, or any fuch flender fubftance, proje&ed upon the li¬ quor, would not be all dark, like other lhadows ; but that part of it would be curioufiy coloured, the edge of it next the body being almoft of a lively golden colour, and the more remote part blue. Thefe, and other experiments of a fimilar nature, many of hm friends, he fays, beheld with wonder ; and he re¬ membered an excellent oculift, who accidentally meet¬ ing with a phial full of this liquor, and being unac¬ quainted with this remarkable property of it, ima¬ gined, after he had viewed it a long time, that fomc new and ftrange diftemper had feized his eyes: and Mr Boyle himfelf acknowledges, that the oddnefs of the phenomenon made him very defirous to find out the caufe of it $ and his inquiries were not altogether- unfuccefsful. Obferving that this tinfture, if it were too deep, was not tinged in fo beautiful a manner, and that the impregnating virtue of the wood did, by being fre¬ quently infufed in frefh water, gradually decay, he cpn- je&ured that the tin&ure contained much of the effen* tial fait of the wood; and to try whether the fubtle parts, on which the colour depended, were volatile enough to be diftilled, without diffolving their tex¬ ture, he applied fome of it to the gentile heat of a lamp-furnace ; but he found all that came over was as limpid and colourlefs as rock water, while that which remained behind was of fo deep a blue, that it was only in a very ftrong light that it appeared of any colour. Sufpefting that the tinging particles abounded with falts, whofe texture, and the colour thence arifing, would probably be altered by acids, he poured into a fmall quantity of it a very little fpirit of vinegar, and found that the blue colour immediately vaniihed, while the golden one remained, on which ever fide it was viewed with refpeft to the light. Upon, this he imagined, that as the acid falts of the vinegar had been able to deprive the liquor of its blue colour, a fulphureous fait, which is of a contrary na¬ ture, would deftroy their effe&s ; and having placed bimfelf betwixt the window and the phial, and let fall ■ into the fame liquor a few drops of oil of tartar per liquium, he found that it was immediately reftored to its former blue colour, and exhibited ail the fame phe¬ nomena which it had done at the firft. Having fometimes brought a round long-necked phial, filled with this tinfture, into a darkened room, into which a beam of the fun was admitted by a fmall aperture ; and holding the phial fometimes near the fun-beams, and fometimes partly in them and partly out i 246 OPT out cf them, chan"i»g alfo the pofition of the glafs, and viewing it from i'everal parts of the room, it ex¬ hibited a much greater variety of colours than it did in an enlightened room. Befides the ufual colours, it was red in home places and preen in others, and " ith- sn were intermediate colours produced hy the different degrees and odd mixtures of light and (hade. It was not only in this tinfture of lignum nephritt- Cum that Mr Boyle obferved the difference between reflected and tranfmitted light. He ohferved it even in gold, though no perfon explained t he caufe of thefe effedls before Sir Hnac Newton, hie took a piece of leaf-gold, and holding it betwixt his eye and the light, obferved that it did not appear of a golden colour, but of a greenifh blue. He alfo obferved the fame change of colour hy candle-light; but the experiment did not fucceed with a leaf of filver. The conftitution of the atmofphere and of the fen, we fhall find, by obfervations made in later periods, to be fimilar to that of this infufion ; for the blue rays, and others of a faint colour, do not penetrate fo far into them as the red, and others of a ftronger co¬ lour : but what this conftitution is, which is common to them all, deferves to be inquired into. For almdft all other tin&ures, and this of lignum nephriticum too, after fome change made in it hy Mr Boyle, as well as all other femi tranfparent coloured fubftances, as glafs, appear of the fame hue in all pofitions of the eye To increafe or dim in ifh the quantity makes no difference, but to make the colour deeper or more dilute. Mr Boyle’s t^'n& account of the colours exhibited account of ^7 thin plates of various fubftances, are met with among the colours the obfervations of Mr Boyle. To fliow the chemifts of thm that colours may be made to appear or vanifh, where there is no acceffion or change either of the fulphure- ous, the faline, or the mercurial principle of bodies, he ohferves, that all chemical effential oils, as alfo good fpirit of wine,being ft a ken till they rife in bub¬ bles, appear of various colours ; which immediately vanifh when the bubbles burft, fo that a colourlefs li¬ quor .mafy be immediately made to exhibit a variety of colours, and lofe them in a moment, without any change in its effential principles. He then mentions ■ the colours that appear in bubbles of foap and water, and alfo in turpentine. He fometim.es got glafs blown fo thin as to exhibit fimilar colours ; and ob- ferves, that a feather, of a proper fhape and fize, and alfo a black ribbon, held at a proper diflance, be¬ tween his eye and the fun, fhowed a variety of lit¬ tle rainbows, as he c Us them, with very vivid colours, none of which were conftantly to be feen in the fame objedts. Dr riooke’s Much m°re P™’5 vvere ta^en with this fubjeft, and . account of *a mnck great(:r number of obfervations refpe&ing it thefe co- were made, by Dr Hooke. As he loved to give fur- lours. prife by his difeoveries, he promifed, at a meeting of the fociety on the 7th of March 1672, to exhibit, at their next meeting, fomeihing which had neither re¬ flexion nor refraXion, and yet was diaphanous. Ac¬ cordingly, at the time appointed, he produced the fa¬ mous coloured bubble of foap and water, of which fuch admirable ufe was afterwards made by Sir Ifaac ,Fts44 ton, but which Dr Hooke and his contemporaries T C r, ^ Hifi feem to Itave overlooked in Mr Boyle1? treatlfe on co¬ lour.0, though it was puhlifhed nine years before. It is no wonder that fo curious an appearance excited the attention of that inquifitive body, and that they ftould defire him to bring an account of it in writing at their next meeting. By the he’p of a fmall glafs-pipe, there were blown feveral fmall bubble0, out. of a mixture of fo:ip and wa¬ ter; where it was obfervable, that, at firft, they appear¬ ed white and clear; but that, after fome time, the film of water growing thinner, there appeared upon it all the colours of the rainbow ; Firil a pale yellow; then orange, red, purple, blue, green, &c. with the fame feries of colours repeated ; in which it was far¬ ther obfervable, that the nrft and laft feries were very faint, and that the middlemoft order or feries was very bright. After thefe colours had paffed over the chan¬ ges above-mentioned, t' e film of the bubble began to appear white again ; and prelently, in ftveral parts of this fecond white film, there appeared feveral holes, which hy degrees grew very big, feveral of them run¬ ning into one another. After reciting other obfer¬ vations, which are net of much confequence, he fays it is ftringe, that though both the encompafling and encompafied air have furfaces, yet he could not ob- ferve that they afforded either reflcXion or refraXion, which all the other parts of the enedmpaffed air did. This experiment, he fays, at firft fight, may appear very trivial, yet, as to the finding out the nature-and caufe of refleXion, refraXion, colours, congruity and incongruity, and feveral other properties of bodies, he looked upon it as one of the moft inftruXive-. And he promifed to coniider it more afterwards ; but we do not find that ever he did ; nor indeed is it to be much regretted, as we ftall foon find this bufinefs in better hands. He adds, that that which gives one colour by refleXion, gives another by trajeXion ; not much un¬ like the tinXure of lignum nephriticum. Dr Hooke was the firft to obferve, if not to de- feribe, the beautiful colours that appear in thin places of mufeovy glafs. Thefe, he fays, are very beautiful to the naked eye, but much more when they are view¬ ed with a microfcope. With this inftrument he could perceive that thefe colours were ranged in rings fur¬ rounding the white fpecks or flaws in this thin fub- ftance, that the order of the colours was the very fame as in the rainbow, and that they were often repeated ten times. But the colours, he fays, were difpofed as in the outer bow, and not the inner. Some of them alfo were much brighter than others, and fame of them very much broader. He alfo obferved, that if there was a place where the colours were very broad, and confpicuous to the naked eye, they might be made, by preffing the place with the finger, to change places, and move from one part to another. Laftlv, he ob¬ ferved, that if great care be ufed, this fubftance may be fplit into plates of or of an inch in diameter, each of which will appear through a microfcope to lie uniformly adorned with fome one vivid colour, and that thefe plates will be found upon examination to be of the fame thicknefs throughout. Asa faX fimilar to this, but obferved previous to it, we ftall here mention that Lord Brereton, at a meeting of the Royal Society in 1666, produced fome pieces Hiftory. OPT pieces of ^lafs taken out of a wifif’o^ of a church, both on the north and on the fouth fide of it; obferving, that they were all eaten in by the air, but tiiat the piece taken from the fouth fide had fome colours like thofe of the rainbow upon f, which the others on the north fide had not. This phenomenon has been fre¬ quently obferved fince, and in other cir-umftances. It is not to be doubted, but that in all thefe cafes, the glnfs is divided into thin plates, which exhibit colours, upon the fame principle with thofe wdiich Dr Hooke obferved in the bubble of foap and water, and in the thin plate of air, which we fhall find more fully ex¬ plained by Sir Ifaac Newton. With crre the thin plates of the glafs may be feparated, and the theory verified. 3* An ebfervation made by Otto Guericke, well ex- ftars are^vi P^a‘ns t^e reaf°n why liars are v.iible at the bottom fib!. b> .lay of a deep well. It is, fays he, becaufe the light that ar the bot- proceeds from them is not overpowered by the rays torn of a 0f fUIlj which are loft in the number of refleftions which they muft undergo in the pit, fo that they can never reach the eye of a fpe&ator at the bottom of it. But of all thofe who have given their attention to this fuhjedt of the reflexion of light, none feems to have gi/ven fuch fatisfadtion as M. Bouguer; and next to thofe of Sir Ifaac Newton, his labours feem to have been the molt fuccefsful. I'he object of his curious and elaborate experiments was to meafure the degrees of li _;ht, whether emitted, refledted, or refradted, by different bodies. They were originally occnfioned by nn article of M. Mairan’s in the memoirs of the French academy for 1721, in which the proportion of the light of the fun at the two folftices were fuppofed to be known; and bis laudable attempt to verify what had been before taken for granted, fuggefted a variety of new experiments, and opened to him and to the world a new field of optical knowledge. His firll pro- dudtion upon this fubjeft was a treatife Intitled EJfai ({Optiques which was received with general apprtrfia- tion. Afterwards, giving more attention to this fub- jeCt, he formed an idea of a much larger work, to which many more experiments were nectffary : but he was prevented, by a variety of interruptions, from executing his dcfign fo foon as he had propofed ; and he had hardly completed it at the time of his death, in *758; fo that we are obliged to his f.iend M. de la Caiile for the care of the publication. At length, however, it was printed at Paris in 1760, under the title of Traite d Opiique. 33 At the entrance upon this treatife, we are induced r>ifcove;ie* to form the moft pleating expectations from our au- ct^u. i;ou-t|ior,g eXper;menta, by his account of the variety, the “ ’ fingtilar accuracy, and cireumIpedtion, with which he made them ; whereby he muff, to all appearance, have guarded againft every avenue to error and particular¬ ly agrg'ft thofe objections to which the few attempts that had been made, of a iimilar nature, before him had been liable. In order to compare different de¬ grees of light, he always contrived to place the bodies fjom which it proceeded, or other bodies illuminated 1 v them, in fuch a manner as that he could view them diffindtly at the fame time ; and he either varied the dillances of thefe bodies, or modified their light in fome other way, till he could perceive no difference between I c s. them. Then, lonfidering their different diffances, o* the other circumffances by which their light was af¬ fected, he calculated the proport on which they would have borne to each other at the fame diffance, or in the fame circumftances. To afeertain the quantity of light loft by refleftion, he placed the mirror,.or reflecting furface, B on which the experiment was to be made, truly upright; and having taken two tablets, of preciftly the fame co¬ lour, or of an equal degree of whitenefs, he placed them exactly parallel to one another at E and D, and threw light upon them by means of a lamp or candle, P, placed in a right line between them. He then placed himfelf fo, that with his eye at A he could fee the tablet E, and the image of the tablet D, re¬ flected from the mirror B, at the fame time ; making them, as it were, to touch one another. He then moved the candle along the line ED, fo as to throw more or lefs light upon either of them, till he could perceive no difference in the ftrength of the light that came to his eye from them. After this, he had no¬ thing more to do than to meafure the diltances EP end DP; for the fquares of thofe diftances exprefled the degree in which the reflection of the mirror di- miniflied the quantity of light. It is evident, that if the mirror leflefted all the rays it received, the candle P muff; have been placed at C, at an equal di¬ ffance from each of the tablets, in order to make them appear equally illuminated ; but becaufe much of the light is loft in reflection, they can only be made to appear equally bright by placing the candle nearer the tablet D. which is feen by refleCtiCm only. To find how much light is loft by oblique reflec* tion, he took two equally poliftied plates, D and E, and caufed them to be enlightened by the candle P; and while one of them, D, was feen at A, by reflection from B, placed in a pofition oblique to the eye, the other* E, was fo placed, as to appear contiguous to it; and removing the plate E, till the light which it re- fkCted was no ffronger than that which came from the image D, feen by reflection at B, he eftimated the quantity of light that was loft by this oblique reflec¬ tion, by the fqnares of the diftances of the two qbjeCb from the candle: It need fcarcely be added, that in thefe experi¬ ments all foreign light was excluded, that his eye was (hade:!, and that every other precaution was obferved in order to make his conclufions unqweftionable. In order to afeertain the quantity of light loft by r fleCHon with the greateft exa&nefs, M. Bouguer in¬ troduced two beams of light into a darkened room, as by the apertures P and Qp which he had fo contrived, that he could place them higher or lower, and enlarge Or contra‘t them at pleafure ; and the reflecting fur- face (as that of a fluid contained in a veffel) was pla¬ ced horizontally at O, from whence the light coming through the hole P, was reflected to R, upon the fereen GH, where it was compared with another beam of light that fell upon S, through the holt Q^; which he made fo much lefs than P, as that the fpaces S and R were equally illuminated ; and by the pro¬ portion that the apertures P an t Q_bore to each other, he calculated what quantity ot light was loft by the reflection at O. It was neceftary, he obferves, that the two beams of light 247 Plate cj.ui. %• 3* Fig. Fig. OPT light TO and-QS (which he ufually made 7 or 8 feet long) fhould be exadtly parallel, that they might come from two points of the Iky equally elevated above the horizon, and having precifely the fame intenfity of light. It was alfo necefiary that the hole Qfhould be a little higher than P, in order that the two images fhould be at the fame height, and near one another. It is no lefs neceffary, he fays, that the fcreen GH be exaftly vertical, in order that the direct and refle&ed beams may fall upon it with the fame inclination; iince, otherwife, though the two lights were perfect¬ ly equal, they would not illuminate the fcreen equal¬ ly. This difpolition, he fays, ferves to anfwer an¬ other important condition in thefe experiments ; for the direCt ray QS muft be of the fame length with the fum of the incident and reflected rays, PO and OR, in brder that the quantity of light introduced into the room may be fenflbly proportional to the frzes of the apertures. We fhall now proceed to recite the refult of the ex¬ periments which he made to meafure the quantity of light that is loft by reflection in a great variety of cir- cumftances ; but we fhall introduce them by the reci¬ tal of fome which were made previous to them on the diminution oflight by reflection, and the tranfmiffion of it to confiderable diftances through the air, by M. Buftbn, at the time that he was conftruCling his ma¬ chine to burn at great diftances, mentioned under the article Burning-G/ciJs. r Receiving the light of the fun in a dark place, and Bu‘’comparing it with the fame light of the fun reflefted by a mirror, he found, that at fmall diftances, as four or five feet, about one half was loft by reflection ; as he judged by throwing two reflected beams upon the lame place, and comparing them with a beam of direft light; for then the intenfity of them both feemed to be the fame. Having received the light at greater diftances, as at too, 20c, and 300 feet, he could hardly perceive that it loft any of its intenfity by being tranfmitted through inch a fpace of air. He afterwards made the fame experiments with candles, in the following manner: He placed himfelf oppofite to a looking-glafs, with a book in his hand, in a room perfe&ly dark; and having one candle lighted in the next room, at the diftance of about 40 feet, he had it brought nearer to him by degrees, till he was juft able to diftinguifh the letters of the book, which was then 24 feet from the candle. ITe then received the light of the candle, refleded by the looking-glafs, upon his book, carefully excluding all the light that was refie&ed from any thing elfe ; and he found that the diftance of the book from the candle, including the diftance from the book to the looking- ^lafs (which was only half a foot) was in all 15 feet. iHe repeated the experiment feveral times, and always with nearly the fame refult; and therefore concluded, that the quantity of direCI light is to that of reflected as 576 to 225 ; fo that the light of five candles re¬ flected from a plane mirror is about equal to that of two candles. From thefe experiments it appeared, that more light ATby refleaion of the candles than of the fun, ich M. Luffon thought was owing to this circum- iance, that the light iifuing from the candle diverges, N1" 247, I C S. Hiftory, and therefore falls more obliquely upon the mirror than the light of the fun, the rays of which are nearly pa¬ rallel. Thefe experiments and obfervations of M. Buffon are curious ; though it will be feen that they fall far fhort of thofe of M. Bouguer, both in extent and ac¬ curacy. We fhall begin with thofe which he made to aibertain the difference in the quantity of light reflec¬ ted by glafs and poliflred metal. Ufing a fmooth piece of glafs one line in thicknefs,^ Bou- he found, that when it was placed at an angle of 15 suer’s di& degrees with the incident rays, it refleCled 628 parts ofcovenes 1000 which fell upon it; at the fame time that a me* 4^ tailic mirror, which he tried in the fame circumftances, tlom reflected only 561 of them. At a lefs angle of inch and pollfh-j denoe much more light was reflected ; fo that at anmetal, angle of three degrees the glafs reflected 700 parts, and the metal fomething lefs, as in the former cafe. Trying the reflection of bodies that were not po- lifhed, he found that a piece of white plafter, placed at an angle of 750, with the incident rays, reflected t-T7 part of the light that is received from a candle nine inches from it. White paper, in the fame circum¬ ftances, reflected in the fame proportion ; but at the diftance of three inches, they both reflected 150 parts of 1000 that were incident. Proceeding to make farther obfervations on the fub- jeCt of reflected light, he premifes the two following theorems, which hedemonftratesgeometrically. 1. When the luminous body is at an infinite diftance, and its light is received by a globe, the furface of which has a perfect polilh, and abforbs no light, it refleCts the light equally in all directions, provided it be re- * ceived at a confiderable diftance. He only excepts the place where thefliadowof the globe falls; but this, he fays, is no more than a fingle point, with refpeCt to the immenfity of the fpherical furface which receives its light. 2. The quantity of light reflected in one certain di¬ rection will always be exaCtly the fame, whether it — be reflected by a very great number of fmali poliflied hemifpheres, by a lefs number of larger hemifpheres, or by a fingle hemifphere, provided they occupy the fame bafe, or cover the fame ground-plan. The ufe he propofes to make of thefe theorems is to affift him in diftinguifhing whether the light reflected from bodies be owing to the extinction of it wiihin them, or whether the roughnefs or eminences which cover them have not the fame effeCt with the fmall po- lifhed hemifpheres above-mentioned. He begins with obferving, that, of the light reflect¬ ed from Mercury, at leaft is loft, and that probably no fubftances refleCt more than this. The rays were received at an angle of ii £ degrees of incidence, that is meafured from the furface of the reflecting body, and not from the perpendicular, which, he fays, is what we are from this place to underftand whenever he mentions the angle of incidence. The moll linking obfervations which he made with Great dif- refpeCl to this fubjeCl, are thofe which relate to the^rei1c^ *a very great difference in the quantity of light reflected at different angles of incidence. la general, he fays, 0f fubftan- that reflection is ftronger at fmall angles of incidence, ces aicord- and weaker at large ones. 1 he difference is exceflive‘nK when the rays itrike the furface of tranfparent fub-.^nse. fiances, 249 i Hiftoty. . OPT ftanCes, witU difFerefit degrees of obliquity} but it is almoft as great in fome opaque fubftances, and it was alwayp more or lefs fo in every thing that he tried. He found the greateft inequality in black marble ; in which he was aftonilhed to find, that, with an angle of 3° incidence, though not perfeftly polifhed, yet it reflefted almoft as well as quickfilver. Of icoorays which it received, it returned 600; but when the angle of incidence was 14 degrees, it refle&ed only 156 ; when it was 30, it refledded 51 } and when it was 80, it refle&ed only 23. Similar experiments made with metallic mirrors ak ways gave the differences much lefs confiderable. The greateft was hardly ever an eighth or a ninth part of it, but they were always in the fame way. The great difference between the quantity of light refledled from the furface of water, at different angles of incidence, is truly furprifing ; but our author ob* ferves, that this difference was greater when the fmall- eft inclinations were compared with thofe which were near to a right angle. He fometimea fufpe&ed, that, at very fmall angles of incidence, the reflexion from water wras even greater than from quickfilver. All things confidered, he thought it was not quite fo great, though it was very difficult to determine the precife difference between them. In very fmall angles, he fays, that water reflefts nearly ^ of the diredl light. There is no perfon, he fays, but has fometimes felt the force of this ftreng refleddion from water, when he has been walking in 11 ill weather on the brink of a lake oppofite to the fun. In this cafe, the refle&ed light is y, 4, or fometimes a greater proportion of the light that comes dire 2 OPT forface, fliould warm it more than the common fun- beams (b). To apply thefe obfervations to the explication of natural phenomena, he obferves, that the atmofphere is not much warmed by the paflage of the fun’s light through it, but chiefly by its contaft with the heated furface of the globe. This, he thought, furnifhed one very Ample and plaufible reafon why it is coldefl: in all climates on the tops' of very high mountains ; namely, becaufe they are removed to the greateft di- ftance from the general furface of the earth. 1‘or it is well known, that a fluid heated by its contact with a folid body, decreafes in heat in fome inverfe propor¬ tion to the diilance from the body. Hehimfclf found, by repeated trials, that the heat of water in deep lakes decreafes regularly from the furface downwards. But to have this queftion fully determined, the temperature of the air in the valley and on the mountain-top mull be obferved every hour, both night and day, and care¬ fully compared together. From this dodlrine he thinks it reafonable to fup- pofe, that the heat produced by a given number of rays, in an opaque body of a given magnitude, mult be greater when the rays are more inclined to one another, than when they are lefs fo ; for the direftioir of the vibrations railed by the adlion of the light, whether in the coloritic particles, or thofe of an in¬ ferior order, will more interfere with one another ; from whence the inteftine (hocks and collifions mull increafe. Befides this, the colorific particles of opaque bodies being difpofed in various fituations, perhaps, upon the whole, the rays will fall more dire ft ly on each, the more they are inclined to one another. not this, fays he, the reafon of what has been remarked by philofophers, that the heat of the fun’s light, col- lefted into a cone, increafes in approaching the focus in a much higher proportion than according to its denfity ? That the difference of the angle in which the rays fall on any particle of a given magnitude, placed at different diltances from the focus, is but fmall, is no proof that the phenomenon^ cannot be afcribed to it; fince we know not in what high pro¬ portion one or both the circumflances now mentioned may operate. However, that it proceeds not from any unknown adion of the rays upon one another, as has been infinuated, is evident from this, that each particular ray, after paffing through the focus, pre- ferves its own colour and its own direfUon, in the fame manner as if it were alone. Abbe No!- The attempts of the Abbe Nollet to fire inflam- let’s experi- mable fubftances by the power of the folar rays col- met t- with lefled in the foci of burning mirrors, have a near rela- "'affts ^ t'on to t^ie Prefent fubjett. Conlidering the great power of burning mirrors and lenfes, efpecially thofe of late conftru&ion, it will appear furprifing that this celebrated experimental philofopher fhould not be able to fire any liquid fubftance. But though he made the ttial with all the care imaginable on the 19th of Fe¬ bruary 1757, he was not able to do it either with fpirit of-wine, olive-oil, oil-of-turpentine, or aether; ICS. Hiftory, and though he could fire fulphur, yet he could not fuceeed with Spanifh wax, rofin, black pitch, or fuet. * He both threw \he focus of thefe mirrors upon the fubftances themfelves, and alfo upon the fumes that rofe from them ; but all the effcdl was, that the li¬ quor boiled, and was difperfed in vapour or very fmall drops, but would not take fire. When linen-rags, and other folid fubftances, were moiftened with any of thefe inflammable liquids, they would not take fire till the liquid was difperfed in a copious fume ; fo that rags thus prepared were longer in burning than thofe that were dry. 45 M. Beaume, who affifted M. Nollet in fome ofM. Beau- thefe experiments, obferved farther, that the fame n;e s fubftances which were eafily fired by the flame of burning bodies, could not be fet on fire by the contadt of thehotteft bodies that did not aftually flame. Nei¬ ther aether nor fpirit-of-wine could be fired with a hot coal, or even red-hot iron, unlefs they were of a white heat. From.thefe experiments our author concludes, that, fuppofmg the eleftric matter to be the fame thing with fire or light, it muft fire fpirit-of-wine by means of fome other principle. The members of the academy Del Cimento had attempted fo fire feveral of thefe fubftances, though without fuccefs ; but this was fo early in the hiftory of philofophy, that nobody feems to have concluded, that, becaufe they failed in this attempt, the thing could not be done. However, the Abbe informs us, that he read an account of his experiments to the Royal Academy at Paris feveral years before he-attended to what had been done by the Italian philofophers. ^ By the help of optical principles, and efpecially by b0 an<3 the diftances DG and GN weie, at leaft, 12 fuch feet. The obfervation was made in the-fummer time, when the atmofpftere was free from all vapours, and about mid-day. F. Grimaldi alfo made the fame experiment that has been recited from Dr Hooke, in which two beams of light, entering a darkened room by two fmall apertures near to one another, proje&ed cones of light, which, at a certain diftance, in part coincided ; and he particularly obferved that the dark boundaries of each of them were vilxble within the lucid ground of the other Obferva t|1^e discoveries of Grimaldi, we fhall fubjoin tionof'De- an additional obfervation of Dechalvs ; who took duties. notice, that if fmall fcratches be made in any piece of poliftied metal, and it be expofed to the beams of the fun in a darkened room, it will reflect the rays ftreaked with colours in the direftion of the fcratches* as will appear if the reflefted light be received upon a piece of white paper. That thefe colours are not produced by refradtion, he fays, ia manifeft ; for that if the fcratches be made upon glafs, the effedt will fed the fame ; and in this caie, if the light had been ICS. refradled at the furfade of the glafs, it would have been tranfmitted through it. From thefe, and many other cblervations, he concludes that colour does not depend upon the refradb’on of light only, nor upon a variety of other circumfiances, which he particularly enumerates, and the effects of which he difeuffes, but upon the intenlity of the light only. We (hall here give an account of a phenomenon of M/dek of vifion obferved by M. De la Hire, becaufe the Hire. ‘ fubjedt of this fediion, viz. the infu'ctwn of light, fee ms to fupply the true folution of it, though the au¬ thor himfelf thought otherwife. It is obfervable, he fays, that when we look at a candle, or any luminous body, with our eyes nearly fhut, rays of light are ex¬ tended from it, in feveral directions, to a confiderabld diltattee, like the tails of comets. This appearance exercifed the fagacity of Defcartes and Rohault, as well as of our author ; but all three feem to have been miftaken with refpedt to it. Defcartds aferibed this effect to certain wrinkles in the furface of the humours of the eye. Rohauk fays, that when the eye lids'are nearly clofed, the edgds of them adt like convex len- fifs. But our author fays, that the ittoifturd on the fur- face df the eye, adhering partly to the eye itfelf, and partly to the edge of the eye-lid, makes a concave mirror, and fo difperfes the rays at their entrance in¬ to the eye. But the true reafen feems to be, that thd light paffing among the eye-ladies, in this fituation of the eye, is infiedfted by its near approach to them, and therefore enters the eye in a- great variety of direc¬ tions. The two former of thefe opinions are particu¬ larly ftated and objedted to by our author. The experiments of Father Grimaldi and Dr Hooke sir Ifmc- were net only repeated with the greateft care by Sir Newton’s Ifaac Newton, but carried much farther than they had ^^C0Yeric8ir thought of. So little ufe had been made of Grimal¬ di’s obfervations, that all philofophers before Newton had aferibed the broad ftiadows, and even the frino-es of light which he deferibed, to the ordinary refradlion of the air : but we (hall fee them placed in a very difi. ferent point of view by our author. He made in a piece of lead a fmall hole with a pin, the breadth of which was the 42ft part of an inch. Through tin's hole he let into his darkened chamber a;. beam of the fun’s light; and found, that the fhadows of hairs, and other fiender fubftances placed in it, were confiderably broader than they would have been if the rays of light had palled by thofe bodies in right lines. He therefore concluded, that they muft have paffed as they are reprefented in fig. 1. in which X reprefents a feftion of the hair, and AD, BE, &c. rays of light Plate paffing by at different diftances, and then falling upon CC(^LIir* the wall GQ^ Since, when the paper which receives the rays is at a great diftance from the hair, the fha- dow is broad, it muft follow, as he obferves, that the hair ads upon the rays of light at fome confiderable diftance from it, the adion being ftrongeft on thole rays which are at the leaft diftance, and growing weak¬ er and weaker on thofe which are farther off, as is reprefented in this figure ; and from hence it comes to pafs that the lhadow of the hair is much broader in proportion to the diftance of the paper from the hair when it is nearer than when it is at a great diftance. He tound, that it was not material whether the hair was furrounded with air, or with any other pellucid 7 fub»- 4$6 OPT fubftance ; for he wetted a polifhed plate of glafa, and laid the hair in the water upon the glafs, and then laying another polilhed plate of glafs upon it, fo that the water might fill up the fpace between the glafies, and holding them in the beam of light, he found the fhadow at the fame diftances was as big as be¬ fore. Alfo the fhadows of fcratches made in polilh- ed plates of glafs, and the veins in the glafs, call the like broad lhadows : fo that this breadth of lhadow mull proceed from fome other caufe than the refrac¬ tion of the air. The fhadows of all bodies, metals, {tones, glafs, wood, horn, ice, &c. in this light were bordered with three parallel fringes, or bands of coloured light, of which that which was contiguous to the lhadow was the broadelt and moft luminous, while that which was the mof£ remote was the narroweft, and fo faint as not eafily to be vifible. It was difficult to diftinguilh thefe colours, unlefs when the light fell very obliquely upon a fmooth paper, or fome other fmooth white body, fo as to make them appear much broader than they would otherwife have done ; but in thefe circumllan- ces the colours were plainly vjfible, and in the follow¬ ing order. The firlt or innermoll fringe was violet, and deep blue next the ffiadcw, light blue, green, and yellow in the middle, and red without. The fe- cond fringe was almoft contiguous to the firft, and the third to the fecond$ and both were blue within, and yellow and red without ; but their colours were very faint, efpecially tbofe of the third* The colours, therefore, proceeded in the following order from the lhadow ; violet, indigo, pale blue, green, yellow, red; blue, yellow, red ; pale blue, pale yellow, and red. The fhadows made by fcratches and bubbles in polifhed plates of glafs were bordered with the like fringes of coloured light. He alfo obferves, that by lookmg on the fun through a feather, or black ribbon, held clbfe to the eye, feve- - ral rainbows will appear, the fhadows which the fibres or threads caft on the retina being bordered with the like fringes of colours. Meafuring thefe fringes and their intervals with the greateft accuracy, he found the former to be in the pro- greffion of the numbers if and their inter¬ vals to be in the fame progreffion with them, that is, the fringes and their intervals together to be in continual progreffion of the numbers i, \/ -r? t» or thereabouts. And thefe proportions held the fame very nearly at all diflances from the hair, the dark in¬ tervals of the fringes being as broad in proportion to the breadth of the fringes at their firft appearance as af¬ terwards, at gteat diftances from the hair, though not fo dark and diftin£t.. In the next obfervation of our author, we find a ve¬ ry remarkable and curious appearance, which we fhould hardly have expelled fi;om the circumftances, though it is pretty fimilar to one that was noticed by Dr Hooke. The fun fhining into his darkened chamber, through a hole ^ of an inch broad, he placed, at the diftance of two or three feet from the hole, a fheet of pafteboard, black on both fides ; and in the middle of it he had made a hole about of an inch fquare, for the light to pafs through ; and behind the hole he faf- tened to the pafteboard the blade of a lharp knife, to intercept fome part of the light which paffed through JNT0 247, ICS. Hi the hole. The planes df the paftfcboard and blade of the knife were parallel to one another, and perpendi¬ cular to the rays } and when they were fo placed that none of the light fell on the pafteboard, but all of it pafted through the hole to the knife, and there part of it fell upon the blade of the knife, and part of it palled by its edge, he let that part of the light which palled by fall on a white paper, 2 or 3 feet beyond the knife, and there faw two {breams of faint light fhoot. out both ways from the beam of light into the lha¬ dow, like the tails of comets. But becaufe the fun’s direct light, by its brightnefs upon the paper, obfeu- red thefe faint ftreams, fo that he could fcarce fee them, he made a little hole in the midft of the paper for that light^o pafs through and fall on a black cloth behind it ; and then he faw “he two ftreams plainly. They were like^one another, and pretty nearly equal in length, breadth, and quantity of light. Their light, at that end which was next to the fun’s direft light, was pretty tirong for the fpace of about ^ of an inch, or i of an inch, and decreafed gradually till it became infenfible. The whole length of either of thefe ftreams, mea» fured upon the paper, at the diftance of 3 feet from the knife, was about 6 or 8 inches ; fo that it fubtend-* ed an angle, at the edge of the knife, of about 10 or 12, or at moft 14, degrees. Yet fometimes he thought he faw it fhoot 3 or 4 degrees farther; but with a light fo very faint, that he could hafdly perceive it. This light he fufpedled might, in part at leaft, arife from fome other caufe than the two ftreams. For, placing his eye in that light, beyond the end of that ftream which was behind the knife, and looking towards the knife, he could fee a line of light upon its edge ; and that not only when his eye was in the line of the ftreams, but alfo when it was out of that line, either towards the point of the knife, or towards the handle. This line of light appeared contiguous to the edge of the knife, and was narrower than the light of the inner- moft fringe, and narroweft when his eye was fartheft from the diredl light; and therefore feemed to pafs between the light of that fringe and the edge of the knife ; and that which pafted neareft the edge feemed to be moft bent, though not all of it. He then placed another knife by the former, fo that their edges might be parallel, and look towards one another, and that the beam of light might fall upon both the knives, and fomc part of it pafs between their edges. In this fituation he obferved, that when the diftance of their edges was about the 400th part of an inch, the ftream divided in the middle, and left a fha¬ dow between the two parts. This lhadow wasfo black and dark, that all the light which paired between the knives feefned to be bent and turned aftde to the one ■hand or the other ; and as the knives ftill approach¬ ed one another, the lhadow grew broader and the ftreams fhorter next to it, fill, upon the contact of the knives, all the light vaniihed. From this.experiment oiir author concludes, that the light which is leaft bent, and which goes to the inward ends of the ftreams, paiTes by the edges of the knives at the greateft diftance ; and this diftance, when the ffiadovv began to appear between the ftreams, was about the 800th part of an inch ; atfd the light which pafled by the edges of the knives at diftances ftill lefs and OTTICS . Plate CCCLK. x S /./,!,•////risi- ir/!/.Y(^i/t>r/cftS■ *57 Hiftory. O P T am! lefs, wag more anti more faint, and went to thofe parts of the ftreams which were farther from the di¬ rect light ; becaufe, when the knives approached one another till they touched, thofe parts of the ftreams vanifhed laft which were fartheft from the di¬ re ft light. In the experiment of one knife only, the coloured fringes did not appear; hut, on account of the breadth of the hole in the window, became fo broad as to run into one another, and, by joining, to make one continual light in the beginning of the ftreams ; but in the laft experiment, as the knives approached one another, a little before the fhadow appeared be¬ tween the two ftreams, the fringes began to appear on the inner ends of the ftreams, on either fide of the di- reft light; three on one fi !e, made by the edge of one knife, and thlee on the other fide, made by the edge of the other knife. They were the moft diftinft when the knives were placed at the greateft diftance from the hole in the window, and became ftill more diftinft by making the hole lefs; fo that he could fometimes fee a faint trace of a fourth fringe beyond the three above- mentioned : and as the knives approached one another, the fringes grew more diftinft and larger, till they vanifhed ; the outermoft vnnifhing firft, and the inner- moft laft. After they were all vanifhed, and the line of light which was in the middle between them was grown very broad, extending itfelf on both fides into the ftreams of light deferibed before, the above-men¬ tioned fiiadow began to appear in the middle of this line, and to divide it along the middle into two lines of light, and increafed till all the light vanifhed. This enlaigement of the fringes was fo great, that the raj s which went to the innermoft fringe feemed to be benr about 20 times more when tire fringe was ready to vanifh, than when one of tire knives was taken away. From both thefe experiments compared together, our author concluded, that the light of the firft fr inge pafted by the edge of the knife at a diftance greater than the Booth part of an inch ; that the light of the fecond fringe pnfled by the edge of the knife at a greater diftance than the light of the firft fringe, and that of the third at a greater diftance than that of the fecond; and that the light of which the ftreams above-mentioned confided, pafied by the edges of the knives at lefs diftances than that of any of the fringes. Fie then got the edges of two knives ground truly ftraight, and pricking their points into aboard, fo that their edges might look towards one another, and meeting near their points, contain a reftilinear angle, be faftened their handles together, to make the angle invariable. The diftance of the edges of the knives from one another, at the tliftance of 4 inches from the angul-’r point, where the edges of the knives met, was the 8th part of an inch ; fo that the angle contained by their edges was about 94'. The knives being thus fixed together, he placed them in a beam of the fun’s light let into his darkened chamber, through a hole the 42d part of an inch unde, at the diftance of 10 or 1 3 feet from the hole ; and he let the light which pa{fed between their edges tall very obliquely on a fmooth white ruler, at the diftance of 4- inch, or an inch, from the knives 5 and there he faw the Vol. XIII. Parc I. I G S. fringes made by the two edges of the knives run along the edges of the lhadows of the knives, in lines pa¬ rallel to thofe edges, without growing fenfibly broad¬ er, till they met in angles equal to the angle contain¬ ed by the edges of the knives ; and where they met and joined, they en led, without croffing one another. But if the ruler was held at a much greater diftancr from the knives, the fringes, where they were farther from the place of their meeting, were a little narrower, and they became fomething broader as they approach¬ ed nearer to one another, and after they met they crofted one another, and then became much broader than before. From thefe obfervations he concluded, that the di¬ ftances at which the light compofing the fringes pafted by the knives were not increafed or altered by the ap¬ proach of the knives, but that the angles in which the rays were there bent were much increafed bj' that ap¬ proach; and that the knife which was neareft to any ray determined which way the ray Ihould be bent, but that the other knife increafed the bending. When the rays fell very obliquely upon the ruler, at the diftance of a third part of an inch from the knives, the dark line between the firft and fecond fringe of the fhadow of one knife, and the dark line between the firft and fecond fringe of the fha low of the other knife, met one another, at the diftance of the fifth part of an inch from the end of the light which palled be¬ tween the knives, where their edges met one another; fo that the diitance of the edges of the knives, at the meeting of the dark lines, was the i6cth part of an inch ; and one half of that light pafied by the edge of one knife, at a diftance not greater than the 320th part of an inch, and, falling upon the paper, made the fringes of the fhadow of that knite ; while the other half pafted by the edge of the other knife, at a dt- ftance not greater than the 320th part of an inch, and, falling upon the paper, made the fringes of the Ihadow of the other knife. But if the paper was held at a di¬ ftance from the knives greater than the third part of an inch, ' the dark lines above mentioned met at a greater diftance than the fifth part of an inch from the end of the light which pafied between the knives, at the meeting of their edges ; fo that the light which fell upon the paper where thofe dark lines met pafted between the knives, where their edges were farther di- ftant than the 160th part of an inch. For at another time, when the two knives were 8 feet and 5 inches from the little hole in the window, the light whiclr fell upon the paper where the above-mentioned dark lines met pafied between the knives, where the diftance be¬ tween their edges was, as in the following table, at the diftances from the paper there noted. iDiftances of the paper from the knives in inches. 1 i 3 r S f 32 96 131 From thefe obfervationi Diftances between the edges of the knifes in millefirnal parts of an inch. 6,012 0,020 0,034 0,0 SI 0,08 £ 0,087 he concluded, that the k light ■Sj8 OPT light which makes the fringes upon the paper is not the fame light at all diftances of the paper from the knives ; but that, when the paper is held near the knives, the fringes are made by light which pafles by the edges of the kniires at a lefs diftance, and is more bent than when the paper is held at a greater diftance from the knives. . . When the fringes of the fhadows of the knives fell perpendicularly upon the paper, at a great didance Plate from the knives, they were in the form of hyperbolas, CCCLIII. their dimenfions being as follows. Let CA, CB, re~ *• prefent lines drawn upon the paper, parallel to. the edges of the knives ; and between which all the light would fall if it fuffered no infleftion. DE is a right line drawn through C, making the angles ACD, BCE, equal to one another, and terminating all the light which falls upon the paper, from the point where the edges of the knives meet. I hen e i and slv, will be three hyperbolical lines, reprefenting the boundaries of the fhadow of one ol the knives, the uaik line between the firft and fecond fringes of that fha- dojw, and the dark line between the fecond and third fringes of the fame fhadow. Alfo xipy ykand %lry will be three other hyperbolical lines, reprefenting the boundaries of the fhadow of the other knife, the dark line between the iirft and fecond fringes of that fha¬ dow, and the dark line between the fecond and third fringes of the fame fhadow. Thefe three hyperbolas are fimilar, and equal to the former three, and crofs them in the points i, t, and / ,* fo that the fhadows of the knives are terminated, and diftinguifhed from the firft luminous fringes, by the lines eis and xip> till the meeting and crofting of the fringes ; and then thofe fines crofs the fringes in the form of dark lines termi¬ nating the firft luminous fringes on the infide, and di- ftinguifhing them from another light, which begins to appear at /, and illuminates all the triangular fpace ip LEj, comprehended by thefe dark lines and the right line DE. Of thefe hyperbolas one afymptote is the line DE, and the other afymptotes are parallel to the lines CA and CB. The fan fhining into his darkened room through the fmall hole mentioned above, he placed at the hole a prifm to refraft the light, and to form on the op- pofite wall the coloured image of the fun; and he found, that the fhadows of all bodies held in the coloured light between the prifm and the wall, were bordered with fringes of the colour of that light in which they were held ; and comparing the fringes made in the fe* veral coloured lights, he found, that thofe made in the red light were the largeft, thofe made in the violet were the leaft, and thofe made in the green were of a middle bignefs. For the fringes with which the fha¬ dow of a man’s hAir were -bordered, being meafured crofs the fhadow, at the diftance of fix inches from the hair, the diftance between the middle and moft lu¬ minous part of the firft or innermoft fringe on one fide of the fhadow, and that of the like fringe on the other fide of the fhadow, was, in the full red light TVi °f an inch, and in the full violet The like di¬ ftance between the middle and moft luminous parts of the fecond fringes, on either ficle of the fhadow, was in the full red light and the violet Tt °f an inch; and thefe diftances of the fringes held the fame pro- ICS. Hiftoryv portion at all diftances from the hair, without any fenfible variation. From thefe obfervations it was evident, that the rays which made the fringes in the red light, paffed by the hair at a greater diftance than thofe which made the like fringes in the violet; fo that the hair, in caufing thefe fringes, adted alike upon the red light or leaft refrangible rays at a greater diftance, and upon the violet or moft refrangible rays at a lefs diftance ; and thereby occafioned fringes of different fizes, without any change in the colour of any fort of light. It may therefore be concluded, that when the hair in the firft: obfervation was held in the white beam of the fun’s light, and caft a fhadow which was bordered with three fringes of coloured light, thofe colours arofe ^ not from any new modifications imprefled upon the rays of light by the hair, but only from the various inflexions whereby the feveral forts of rays were fepa- rated from one another, which before feparation, by the mixthre of all their colours, compofed the white beam of the fun’s light; but, when feparated, cornpofed lights of the feveral colours which they ate originally difpo- fed to exhibit. The perfon whofe name we find firft upon the lift 53 of thofe who purfued any experiments fimilar to thofe Maraldi 9 of Newton on infle&ed light is M. Miraldi; whofe ob- 1 k'oveues* fervations chiefly refpeX the inflexion of light towards other bodies, whereby their fhadows are partially illu¬ minated; and many of the circumftances which he no¬ ticed relating to it are well worthy of our attention, as the reader will be convinced from the following account of them. ■ He expofed in the light of the fun a cylinder of J4 wood three feet long, and 6t lines in diameter; when^P^1" its fhadow, being received upon a paper held clofe tocerning th'e it, was everywhere equally black and well defined, (hariows of and continued to be fo to the diftance of 23'inches cylinders, from it. At a greater diftance the fhadow appeared to be of two different denfities ; for the two extremi¬ ties of the fhadow, in the direXion of the length of the cylinder, were terminated by two dark ftrokes, a little more than a line in breadth. Within thefe dark lines there was a faint light, equally difperfed through the. fhadow, which formed an uniform penumbra, much lighter than the dark ftrokes at the extremity, or than the fhadow received near the cylinder. This appear¬ ance is reprefented in Plate CCCLIII. fig. 3. As the cylinder was removed to a greater diftance from the paper, the two black lines continued to be nearly of the fame breadth, and the fame degree of obfeurity; but the penumbra in the middle grew light¬ er, and its breadth diminifhed, fo that the two dark lines at the extremity of the fhadow approached one another, till, at the diftance of 60 inches, they coinci¬ ded, and the penumbra in the middle entirely vanifhed. At a ftill greater diftance a faint penumbra was viftble; but it was ill defined, and grew broader as the cylin¬ der was removed farther off, but was fenfible at a very great diftance. Befides the black and dark fhadow, which the cy¬ linder formed near the opaque body, a narrow and faint penumbra was feen on the outfide of the dark fhadow. And on the outfide of this there was a traX more flrongly illuminated than the reft of the paper. The ' * Hiilory. OPT The breadth of the external penumbra increafed with the diftance of the fhadow from the cylinder, and the breadth of the tra& of light on the outfide of it was alfo enlarged } but its fplendor diminifhed with the di¬ ftance. He repeated thefe experiments with three other cy¬ linders of different dimenfions ; and from them all he inferred, that every opaque cylindrical body, expofed to the light of the fun, makes a ftiadow which is black and dark to the diftance of 38 to 45 diameters of the cylinder which forms it; and that, at a greater diftance, the middle part begins to be illuminated in the manner ileferibed above. In explaining thefe appearances, our author fuppofes that the light which diluted the middle part of the fha¬ dow was occafioned by the inflection of the rays, which, bending inwards on their near approach to the body, did at a certain diftance enlighten all the fhadow, ex¬ cept the edges, which was left undifturbed. At the fame time other rays were deflefted from the body, and formed a ftrong light on the outfxde of the fha¬ dow, and which might at the fame time contribute to dilute the outer fhadow, though he fuppofed that pe¬ numbra to be occafioned principally by that part of the paper not being enlightened, except by a part of the fun’s difk only, according to the known principles of optics. The fame experiments he made with globes of feve- Concerning ral diameters ; but he found, that, whereas the fhadows thofe of of the cylinders did not difappear but at the diftance globes. of 41 of their diameters, thofe of the globes were not • vifible beyond 15 of their diameters; which bethought was owing to the light being inflected on every fide of a globe, and confequently in fuch a quantity as to difperfe the fhadows fooner than in the cafe of the cy¬ linders. In all thefe cafes, the penumbra occafioned by the in- fledted light began to be vifible at a lefs diftance from the body in the ftronger light of the fun than in a weaker, on account of the greater quantity of rays in* flefted in thofe circumftances. Confidering the analogy between thefe experiments His miftake an^ t^e phenornena °f an eclipfe of the moon, immer- concerning fed in the fhadow of the earth, he imagined, that part the moon, of the light by which ftie is then vifible is inflected light, and not that which is refracted by the atmo- fphere ; though this may be fo copious as to efface fe- veral of the above-mentioned appearances, occafioned by infle&ed light only. But this gentleman fhould have confidered, that as no light is inflected but what paffts exceedingly near to any body, perhaps fo near as the diftance of ^ part of an inch, this caufe muft be altogether inadequate to the effeft. Being fenfible that the above-mentioned phenomena of the fhadows were caufed by inflected light, he was induced to give more particular attention to this re¬ markable property; and, in order to it, to repeat the experiments of Grimaldi and Sir Ifaac Newton in a darkened room. In doing this, he prefently obferved, that, befuies the enlarged fhadow of a hair, a fine needle, &c. the bright gleam of light that bordered it, and the three coloured rings next to this enlightened part, when the fhadow was at a confiderable diftance from the hair, the dark central fhadow was divided in ICS. 259 the middle by a mixture of light j and that it was not of the fame denfity, except when it was very near the hair. This new appearance will be feen to be exaftly fimilar to what our philofopher had obferved with re- fpe£t to the fhadows in the open day-light above men- tianed ; but the following obfervations, which he made with fome variation of his apparatus, are much more curious and linking, though they arife from the fame caufe. Having placed a briftle, which is thicker than a com¬ mon hair, in the rays of the fun, admitted into a dark chamber by a fmall hole, at the diftance of nine feet from the hole, it made a fhadow, which, being recei¬ ved at five or fix feet from the objeft, he obferved to confiil of feveral ftreaks of light and fhade. The middle part was a faint fhadow, or rather a kind of penumbra, bordered by a darker fhadow, and after that by a nar¬ rower penumbra; next to which was a light flreak broader than the dark part, and next to the ftreak of light, the red, violet, and blue colours were feen as ia the fhadow of the hair. In the fame manner he placed, in the fame rays of the fun, feveral needles of different fixes ; but the ap¬ pearances were fo exceedingly various, tho’ fufficiently iingular, that he does not recite them particularly, but choofes rather to give, at fome length, the obfervations he made on the fhadows of two plates, as by that means he could better explain the phenomena of the round bodies. ' ^ He expofed in the rays of the fun, admitted by a Hxperi- fmall hole into a dark chamber, a plate that was twoments con- inches long, and a little more than half a line broad..net^ing: th/ This plate being fixed perpendicularly to the rays, at ..;;ace°3'VS ° the diftance of nine feet from the hole, a faiat light* was feen uniformly difperfed over the fhadow, when it was received perpendicularly to it, and very near. The fliadow of the fame plate being received at the diftance of two feet and a half, was divided into four very nar¬ row black ftreaks, feparated by fmall lighter intervals equal to them. I he boundaries of this fhadow on each fide had a penumbra, which was terminated by a very ftrong light, next to which were the coloured ftreaks of red, violet, and blue, as before. This is reprefented in Plate CCCLIII. fig. 4. ri he fhadow of the fame plate, at 4T feet diftance from it, was divided into two black ftreaks only, the two outermoft having difappeared, as in fig. 5. ; but thefe two black ftreaks which remained were broader than before, and feparated by a lighter fhade, twice as broad as one of the former black ftreaks, when the iha- dow was taken at 2| feet. This penumbra in the middle had a tinge of red. After the two black ftreaks there appeared a pietty ftrong penumbra, ter¬ minated by the turn ilreaks of light, which were now- broad and fplendid, after which followed the coloured ftreaks. A fecond plate, two inches long and a line broad, being placed like the former, 14 feet from the hole by which the rays of the fun were admitted, its fhadow being received perpendicularly very near the plate, was illuminated by a faint light, equally difperfed, as in the cafe of the preceding plate. But being received at • the diftance of 13 feet from the plate, fix fmall black , K k 2 ftreaks $6o OPT p, ftreaks began to be vifible, as in fig. 6. At 17 f^et CCCLUI. from the plate, the black ftreaks vrere broader, more diftindt, and more feparated from the ftreaks that were lefs dark. At 42 feet from the plate, only two black ftreaks were feen in the middle of the penumbra, as in fig. 7. This middle penumbra between the two black ftreaks was tinged with red. Next to the black ftreaks there always appeared the ftreaks of light, which were broad, and the coloured ftreaks next to them. Receiving the fhadow of the fame plate at the di- ftance of 72 f et, the appearances were the fame as in the former fituation, except that the two black ftreaks were broader, and the interval between them, occupied by the penumbra, was broader aifo, and tinged with a deeper red. In the fame rays of the fun he placed different plates, and larger than the former, one ot them a line and a half, another two lines, another three lines broad, &c. but receiving their Shadows upon paper, be could not perceive in them thofe ftreaks of faint light which he had obferved in the fhadows of the fmall plates, though he received thefe fhadows at the diftance of 56 feet. Nothing was feen but a weak light, equally diffufed, as in the fhadows of the two fmalleft plates, received very near them. But had his dark chamber been large enough, he did not doubt, but that, at a proper diftance, there would have been the fame appearances in the fhadows of the larger plates as in thofe of the. fmalleft. For the fame rea- i'on, he fuppofed, that, if the fhadows of the fmall needles could have been diftintlly viewed very near thofe bodies, the different ftreaks of light and fhade would have been as vifible in them as in thofe of the fmall plates; and indeed he did obferve the fame appearances in the fhadows of needles of a middling fize. The ftreaks of light in thefe flvadows our author aferibed to the rays of light which are infle&ed at dif¬ ferent diftances from the bodies ; and he imagined that their crofting one another was fufficient to account for the variations obfervable in them at difterent di¬ ftances. The extfaordinary fize of the fhadows of thefe fmall fubftances M. Maraldi thought to be occafioned by the fhadow from the enlightened part of the fky, added to that which was made by the light of the fun, and alfo to a vortex occafioned by the circulation of the inflefted light behind the object; but our readers will probably not think it neceffary for us either to produce all his reafons for this hypothefis, or to enter into a re¬ futation of them. Our author having made the preceding experiments upon fingle long fubftances, had the curiofity to place two of them fo as to crofs one another in a beam of the fun’s light. The fhadows of two hairs placed in this manner, and received at fome diftance from them, appeared to be painted reciprocally *»ne upon the other, fo that the obfeure part of one of them was vi¬ fible upon the obfeure part of the other. The ftreaks of light alfo crofted one another, and the coloured ftreaks did the fame. Having placed a needle and a hair crofting one an¬ other, their fhadows, at the fame diftance, exhibited I C S. Hiftory. the fame appearances as th? fhadows of the two hairs, though the (hadow of the needle was the ftronger. He alfo placed in the rays of the fun a briftle and a plate of iron a line thick, fo that they crofted one another obliquely ; and when their fhadows were re¬ ceived at the fame diftance, the light and dark ftreaka of the fhadow of the briftle were vifible fh far as the middle of the fhadow of the plate on the fide of the acute angle, but not on the fide of the obtufe angle, whither the briftle or the plate were placed next to the rays. The plate made a fhadow fufficiently dark, divided into fix black ftreaks; and thefe were again divided by as many light ones equal to them; anl yet all thg ftreaks belonging to the fhadow of the briftle were vifible upon it, as in kg. 8. Fo ex¬ plain this appearance, he fuppofed that the rays of the fun glided a little along the briftle, fo as to en¬ lighten part of that which was behind the plate. But this feems to be an arbitrary and improbable fuppofi- tion. Our philofopher did not fail to expofe feveral fmall globes in the light of the fun in his dark chamber,, and to compare their fhadows with thofe of the long fubftances, ax he had done in the day-light, and the appearances were ftill fimilar. It was particularly evident, that there v»as much more light in the fha¬ dows of the globes than in thofe of the cylinders, not only when they were both of an equal diameter, but when that of the globe was larger than that of the cylinder, and the'fhadows of both the bodies were re¬ ceived at the fame diftance. He alfo obferved, that he could perceive no difference of light in the fhadows of the plates which were a little more than one lin2^ broad, though they were received at the diftance of 7 2 feet ; but he could cafily fee a difference of fhades in thofe of the globes, taken at the fame diftance, tho' they were z} lines in diameter. In order to explain the colours at the edges of thefe fhadows, he contrived to throw fome of the fliadowa upon others ; and the following obfervations, though they did not enable him to accomplifh what he in¬ tended, are curious and worth reciting. Having thrown feveral of the fimilar colours upon one another, and thereby produced a tinge more lively Expcri- than before, he threw the gleam of light, which ways intervened between the colours and the darker^ colourC(, part of the fhadow, upon different parts of other fha-foadows. dows; and obferved, that, when it fell upon the exte¬ rior penumbra made by another needle, it produced a beautiful fky-blue colour, almoft like that which was produced by two blue colours thrown together. When the fame gleam of light fell upon the deeper fhadow in-the middle, it produced a red colour; which feemed to prove, that the reddifh colour in the middle of feveral of the fhadows might come from the little light inflected into that place. But here our author feems to have been mifled by fome falfe hypothefi# concerning colours. He placed two. plates of iron, each three or four lines broad, very near one another, but with a very fmall interval between them:: and having placed them in the rays of the fun, and received their fhadows at the diftance of 1 5 or 20 feet from them, he faw no light between them but a continued fhadow, in the middle Hiftory- ° .P T middle of which were fome ftveaks of a lively purple, parallel to one another, and fcparated by other black ftreaks; but between them there were other ftreaks, both of a very faint green, and alfo of a pale yellow. He alfo informs us, that M. Dtlifle had obferved co¬ lours in the ilreaks of light and fhr.de, which are ob- fervable in fhadows taken near the bodies, c,, Among thofe who followed Sir Ifaac Newton in M Mai- his ohfervations on the inflexion of light, we alfo find pn’sobfcr- ingenious M. Ma:r?.n : but, without attempting ratiuns. ^ difcovery of new fads, he only endeavoured to explain the old ones, by the hypothefis of an atmo- fphere furrounding ail bodies; and confequently ma¬ king two refie&ions and refra&ions of the light that impinges upon them, one at the furface of the atmo- fphere, and the other at that of the body itfelf. This atmofphere he fuppofed to be of a variable denfity and refra&ive power, like the air. 60 M. Mairan was fuccceded by M. Hu Tour, who t^le varisble atmofphere fuperfiuous, and ima- ilouri U gined that he could account for all the phenomena by the help of an almofphere of an uniform denfity, and of a lefs refractive power than the air furrounding all bodies. But what we are molt obliged to this gentleman for, is, not his ingenious hypothe/is> but the beautiful variety with which he has exhibited the ex¬ periments, which will render it much ealier for any perfon to invertigate the true caufes of them. Before M. Hu Tour gave his attention to this fub- jed, only three fringes had been obferved in the co¬ lours produced by the infledion of light; but he was accidentally led to obferve a greater number of them, and adopted from Grimaldi the following ingenious method of making them all appear very dirtind. He took a circular board A13EB (fig.9.), 13 inches in diameter, the furface of which was black, except at the edge, where there was a ring of white paper about three lines broad, in order to trace the circumference of a circle, divided into 360 degrees, beginning at the point A, and reckoning 180 degrees on each hand to the point E ; B and H being each of them placed at 90 degrees. A flip of parchment three inches broad, and difpofed in the form of a hoop, was faftened round the board, and pierced at the point E with a fquare hole, each fide being four or five lines, in order to in¬ troduce a ray of the fun’s light. Laftly, in the centre of the board C, and perpendicular to it, he fixed a pin about | of a line in diameter. This hoop being fa difpofed, that a ray of light entering the dark chamber, through a vertical cleft of two lines and a half in length, and about as wide as the diameter of the pin, went through the hole at E,. and parting parallel to the plane of the board, proje&ed the image of the fun and the ihadow of the pin at A. In thefe circualliances he obferved, 1. That quite round the concave furface of this hoop, there were a multitude of coloured ftreaks; but that the fpace mAn, of about 18 degrees, the middle ef which was occupied by the image of the fun, was covered with a faint light only. 2. The orjler of the colours in thefe ftreaks was generally fuch that the moft refrangible rays were the neareft to the incident ray EGA ; fo that, beginning from the point A, the violet was the firft and the red the laft; colour in each of the ftreaks. In fome of (Plate iCLin. I C S. 261 them, however, the colours were difpofed in a contrary order. 3. The image of the fun, projedled on each fide of the point A, was divided by the rtiadow of the pm, which was bordered by two luminous ftreaks. 4. The coloured ftreaks were narrower in fome parts of the hoop than others, and generally decreaied in breadth in receding from the point A. 5. Among thefe coloured ilreaks, there were fomc- times others which were white, a line or a line and an half in breadth, which were always bordered on both fides by a ftreak of orange colour, at leatl when the light of the fun was intenfe, and the chamber fuffi- ciently dark. From this experiment he thought it was evident, that the rays which parted beyond the pin were not the only ones that were decompofed, for that thofe which were refie&ed back from the pin were decom- pofed alfo ; from which he concluded, that they mu ft have undergone fome reffa&ion. He alfo thought that thofe which went beyond the pin fullered a re- fleftion, fo that they were all aftecled in a fimilaF manner. In order to account for thefe fafts, our author de- feribes the progrefs of a ray of light through an uni¬ form atmofphere, which he fuppofes to furround the' pin ; and Ihows, that the differently refrangible rays will be feparated at their emergence from it: but he refers to fome experiments and obfervations in a future memoir, to dem@nftrate that all the coloured ftreaks; are produced by rays that are both reflected and re¬ fracted. To give fome idea of his hypothefts, he fhows that 6r the ray a b, fig. 10. after being refracted at b, reflected Account of at r and u, and again refracted at s and t, will be di-*>u vided into its proper colours; the lead refrangible or the red rays iffuing at x, and the moft refrangible or violet at y; which agrees with his obfervations. Thofe ftreaks in which the colours appear in a contrary order he thinks are to be aferibed to inequalities in the fur¬ face of the pin. This might eafily have been afeer- tained by turning the pin round ; in which cafe thefe differently-coloured ftreaks would have changed their places. If any perfon fhould chobfe to repeat thefe experi¬ ments, he obferves that it requires that the fky be very clear and free from vapours, in order to exhibit the colours with the greateft diftinftnefs ; fince even the vapours that are imperceptible will diminilh the laftre of the colours on every part of the hoop, and even efface foinc of them, efpecially thofe which are on that part in which the beam of light enters, as at E, fig. 9, where the colours are always fainter than in any other place, and indeed can never be diftinguidled except when the hole E is confined by black fubllances, fo as to intercept a part of the light that might reach the pin ; and unlefs alfo thofe rays which go beyond the pin to form the image of the fun at A be flopped, fo that no rays are vifible except thofe that are re¬ flected towards the hole, and which make the faint ftreaks. The coloured ftreaks that are next the fhadgw of the pin, he fhows, are formed by thofe rays which,, entering the atmofphere, do not fall upon the pin ; and, without any reflection, are only refracted at their entering: 262 Plate CCCLI1I. OPT entering and leaving the atmofphere, as at b and r m, fig. 11. In this cafe, the red or leaft refrangible rays will ifiue at r, and the violet at u. To diftinguilh the rays which fell upon the hoop in any particular dire£tion, from thofe that came in any other, he made an opening in the hoop, as at P, fig. 9. by which means he could, with advantage, and at any diftance from the centre, obferve thofe rays un¬ mixed with any other. To account for the coloured ftreaks being larger next the fhadow of the pin, and growing narrower to the place where the light was admitted, he fliows, by fig. 12. that the rays ab are farther feparated by both the refractions than the rays c d. Sometimes our author obferved, that the broader ftreaks were not difpofed in this regular order ; but then he found, that by turning the pin they changed their places, fo that this circumftance muft have been an irregularity depending upon the accidental furface of the pin. 1 he white ftreaks intermixed with the coloured ones he afcribes to fmall cavities in the furface of the pin, or feme other .foreign circumftance; for they alfo changed their places when the pin was made to turn upon its axis. Other obfervations ef our author feem to prove that the refrafting atmofpheres funounding all kinds of bodies are of the lame fize ; for when he placed a great variety of fubftances, and of different fizes ado, he always found the coloured ftreaks of the lame dimenfions. / M. Du Tour obferves that his hypothefis contradi&s an ©bfervation of Sir Ifaac Newton, that thofe rays which pafstthe neareft to any body are the moft in- flefted; but he thinks that Newton’s obfervations were not fufficiently accurate. Befides, he obfervea, that Newton only laid that be thought it to be fo, without afferting it pofitively. Since the rays which formed thefe coloured ftreaks are but little diverted out of their way, our author infers that this atmofphere is of fmall extent, and that its refractive power is not much lefs than that of air. Expofing two pieces of paper in the beam of light, fo that part of it palled between two planes formed by them, M. Du lour obferved, that the edges of this light, received upon paper, were bordered with two orange coloured ftreaks, which Newton had not taken notice of in any of his experiments. To account for tnera, he iuppofes, that, in fig. 13. the more refran¬ gible of the rays which enter at' £ are fo refra&ed, that they do not reach the furface of the body itfelf at R.: fo that the red and orange-coloured light may be reflected from thence in the dire&ion JM, where the orange-coloured ftreaks will be formed ; and, for the fame reafou, another (treak of orange will be formed at by the rays which enter the atmofpheie on the other fide of the chink. In a fimilar manner he accounts for the orange coloured fringes at the borders of the white llreaks, in the experiment of the hoop. The blue rays, which are not refkaed at R, he fuppofes, pafs on to 1; and that of thefe rays the blue tinge obfervable in the lhadows of fonts bodies are formed. I G S. Hi {lory. We may here make a general obfervation, appli- 62 cable to all the attempts of philofophers to explain hypo- thefe phenomena by atmofpheres. Thefe attempts give no explanation whatever of what is attempted, founded.1 ' i. e. the phyfical caufe of the phenomena. A phe¬ nomenon is fome individual fail or event in nature. We are faid to explain it when we point out the ge^ neral fact in which it is comprehended, and Ihow the manner in which it is fo comprehended, or the parti¬ cular modification of the general fa3. Fhilofophy re- fembles natural hiltory, having for its fubjedt the events of nature ; and its inveftigations are nothing but the clalfification of thefe events, or the arrangement of them under the general fads of which they are indi¬ vidual inllances. In the prefent inilance there is no general fa3 referred to. The atmofphere is a mere gratuitous fuppofition; and all that is done is to Ihow a refemblance between the phenomena of infledion of light 10 what would be the phenomena were bodies furrounded with fuch atmofpheres ; and even in this point of view, the difeuflions of Mairan and Du Tour are extremely deficient. They have been fatisfied with very vague refemblances to a fad obferved in one Jingle iti/lance, and not fufficientiy examined or deferibed in that inftance, namely, the refradion of light through the atmofphere of this globe. The attempt is to explain how light is turned out of its diredion by paffing near the furface of bodies. This indicates the adion of forces in a diredion tranf- verfe to that of the light. Newton took the right road of inveftigation, by taking the phenomenon in its original fimplicity, and attending merely to this, that the rays are defleded from their former courfe ; and the foie aim of his inveftigation was to difeover the laws, i. e. the more general fads in this defkdion. He deduced from the phenomena, that fome rays are more defleded than others, and endeavoured to determine in what rays the defledions are moft re¬ markable : and no experiment of M. Du Tour has fhown that he was niiftaken in his modified affertion, that thofe rays are moft infleded which pafs neareft to the body. We'fay modijied ajfertion ; for Newton points out with great fagacity many inftances of alter¬ nate fits of inflection and deflection ; and takes it for granted, that the law of continuity is obferved in thefe phenomena, and that the change of infledion into de¬ fkdion is gradual. But thefe analogical difeufiions are eminently defi- cieht in another refped : They are (p’rima facie) held out as mechanical explanations of the changes of mo¬ tion obferved in rays of light. When'it fhall be fhown,- that thefe are precifely fuch as are oblerved in refrad- ing atmolpheres, nothing is done towards deciding the original queftion ; for the adion of refrading at¬ mofpheres prefents it in all its difficulties, and we muft ^ ftili aik ho'Zu do thefe atmofpheres produce this eJfeCi ? No advance whatever is gained in fcience by thrufting in this hypothetical atmofphere ; and Newton did wifely in attaching bimfelf to the Ample fad: and he thus.g^^ gives us another flep in fcience, by fhowing us afra&ion,* fad unknown before, viz. that the adion of bodiesd inflec- on light is not confined to tranfparent bodies. He311 Pro' added another general fad to our former flock, thdf^ light as zveil as other matter is acted on at a dflance he fame and thus he made a very important dcdudlion, that forces. Jlediot Hiftory. OPT Jlediotty refraStor), and inflexion) are prolally brought about by the fame forces. We would extend this obfervation to all attempts of philofophers to explain the phenomena of nature by the immediate aftion of invifible fluids, magnetieal, eledlrical, nervous, aethers, &c. and we would add, that all of them are equally illogical. They are all attempts te explain changes of motion byimpulfe; and proceed on the previous fuppofition, that the changes of mo¬ tion by impulfe are perfeftly underftood ; a fuppofition quite gr?*uitous, nay falfe. We may challenge any philofopher to demonllrate, from unexceptionable prin¬ ciples, and by juft argument, what will be the effedt of one particle of matter in motion meeting with another particle at reft, thefe two particles conftituting the whole of the univerfe. The queftion is to this day undecided. But this is not all—changes of motion by impulfe are very familiar,, and the general laws are pretty well known ; fo that when it can be ftiown that impulfe really operates in a phenomenon, we are fatisfied with the explanation. When we fee a glafs ball hanging as a pendulum put in motion by the ftroke of another equal ball fimilarly fufpended, we think its motion is fufficiently explained by the common laws of collifion. But this is a very incomplete view of the matter. It remains to be proved, that the motion was really pro¬ duced by impulfe, that is, by the one ball’s coming into contadl with the other; and we {hall find that real impulfe is far from being fo familiar as we imagine. When one objeft glafs of a very long telefcope lies upon another, nothing is obferved at the place of con- ta£t of the two fpherical glaffes, unlefs the weight of the upper one be confiderable ; in which cafe a greafy- like fpot is obferved. If now the upper glafs be preffed on the other, the fpot will increafe in diameter, and have a coloured margin. By gradually increafing the preffure, the breadth of the coloured fpot will inereafe, and it will be found to confift of concentric arches of different colours, increafing in number and breadth by an increafe of preffure. When this is fufficiently great, a blaqk or unreflefting fpot appears in the middle, ftiarply defined, with a filvery margin, and increafing in breadth with the preffure. No additional preffure makes any change excepting in the diameters of the coloured rings. When the preffure is gradually dimi- niflied, the rings contrail, the black fpot vaniffies, and all the colours vanifh in the contrary order to that of their firft appearance. When the preffure is meafured which is neceffary for producing the black fpot, it is found confiderably to exceed 800 pounds for every fquare inch of the black fpot. 64 It is inconteftably proved, that the coloured rings $00 pounds are produced by the refleition of light in thofe parts ev.-.U °n wliere the glaffes are at certain fmall diftances from fquare inch each other, infeparable by means of the diameters'of necctr .ry to the coloured rings and the diameter of the fpheres, bod W° of which the adjoining furfaces of the gl'affes are por- appu iitUO tions ; and the want of refle&ion in the middle feems conutf. to indicate the want of this neceffary diftance, and that the two glaffes are there in contact, making but one, their furfaces being flattened by compreifion. The glaffc-s feem to be kept afunder by mutual forces, which are overcome by external preffure, and which again feparate them when the preffure is removed. I C S. 263 When therefore the glafs ball mentioned above puts the other in motion by ftriking it, we are in titled to fay, that unlefs the preffure during the ftroke has been equal to 800 pounds for every fquare inch of contact, the motion has been produced without con¬ tact or real impulfe, by the adtion of repulfive forces exerted between the bails, in the fame manner as would happen between two magnets floating on cork with their north poles fronting each other; in which cafe (if the motion has been fufficiently flow) the ftriking magnet will be brought to reft, and the other move off, with its original velocity, in the fame manner as happens to the glafs balls. Many fuch communications of motion happen, where we cannot fay that the im-proiuce4 pulfive preffure is greater than that now mentioned ; without and in fuch cafes we are well intitled to fay, that theirnPufle> motion has been produced without real irnpulfe, by repulfive forces adling at a diftance. This evidently diminifties to a great degree the familiarity of the fa£t of impulfe. But we conclude too haftily, from the phenomena of the objeft glaffes, that a prtffure exceeding 800 pounds on the fquare inch will produce contact. Blow a foap bubble, and let it fall on a piece of cloth, and cover it with a glafs bell: after fome time you will obferve rings of colours on its upper part, which will increafe in number and bi-eadth, and be in every refpedt fimilar to thofe between the obje£t-glaffes. Thefe arife from the gradual fhining of the upper part' of the foap bubble; a certain thicknefs of this, as well as of the interval between the glaffes, invariably re¬ flecting a certain colour. At laft a black fpot appears a-top, which is ffiarply defined, and increafes in diame¬ ter. Soon after this the bubble burfts. Thus then there is a certain thicknefs neceflary for enabling the plate of leap fuds to reflet; light fo as to be very fen- iible. Analogy obliges us to extend this to the ob- jeft-glaffes, and to fay, not that the glafles touch each other through the extent of the black fpot, but that their diftance is there too fmall for the fenfible reflec¬ tion of light; and it remains undecided whether any preffure, however great, can annihilate all diftance be- 65 tween them. So tar, therefore, from impulfe being a It is doubts familiar fa£l, and its fuppofed laws being proper andful whe‘ logical principles of reafoning and explanation, it ap- pears extremely doubtful whether the fa£t has ewreverYeen been obferved; and it muft therefore be againft the obfervecL - rules of logic to adduce the laws of impulfe for the ex¬ planation of any abftrufe phenomenon, ./Ether and other fluid atmofpheres have often been reforted to by philofophets puzzled for an explana¬ tion ; and all this trouble has been taken to avoid the fuppofed difficulty of bodies afting at a diftance. We now fee that this is only putting the .difficulty a ftep farther off. We mayhere add, that in all thefe attempts the very thing is fuppofed which the philofophers wifti to avoid. Thefe aethers have been fitted for their talks by fuppofing them of variable denfities. It is quite eafy to fhow, that fuch a variation in den- 67 fity cannot be conceived without fuppofing the parti-Su^P°*rey a variety of arguments, re¬ futes the opinion of former times, that the feat of vi- 7* _ fion is in the cryftalline. Dcfcartes makes a good number of obfervations on cartes, phenomena of vifion. He explains fatisfaftorily the natural methods of judging of the magnitudes, fi- tuations, and diftances, of obje&s by the direction of the optic axes; comparing it to a blind man’s judg¬ ing of the fixe and diftance of an objedt, by feeling at it with two flicks of a known length, when the hands in which he holds them are at a known diftance from each other. He alfo obfervcs, that having been ac- cuftomed to judge of the fituatiotl of objetts by their images'falling on a particular part of the eye; if by any diftortion of the eye they fall on a different place, we are apt to miftake their fituation, or imagine one objeft to be two ; as, till we become accuftomed to it, we imagine one flick to be two, when it is placed between two contiguous fingers laid acrofs one ano¬ ther. But he obferves, that all the methods we have of judging of the diftances of objefts are very uncer¬ tain, and extend but to narrow limits. The dire&ion of the optic axes, he fays, will not ferve us beyond 15 or 20 feet, and the change of form of the cryftalline not more than three or four feet. For he imagined that the eye conforms itfelf to the view of near or di- ftant objects by a change in the curvature of the cry¬ ftalline, which he fuppofed to be a mufcle, the ten¬ dons of it being the proceffus ciliares. In another place, he fays, that the change in the conformation of the eye is of no ufe to us for the purpofe of judging of diftances beyond four or five feet, and the angle of the optic axes not more than 100 or 200 feet: for this reafon, he fays, that the fun and moon are con¬ ceived to be much more nearly of the fame fi/,e than they are in reality. White and luminous objedls, he fays,, appear larger than others, and alfo the parts contiguous to thofe on which the rays actually im- pinge; and for the fame reafon, if the objedls be fmall, and placed at a great diftance, they will always appear round, the figure of the angles difappearing. fietk.iey’i The celebrated Berkeley bifbop of Cloyne publilb- e^’.ln 17°9> -An EJfay towards a New Theory of Vifiony which contains the folution of many difficulties. He does not admit that it is by means of thofe lines and angles, which are extremely ufeful in explaining the theory of optics, that different diftances are judged of by thc .fenfe of fight ; neither does he think that the mere dire&ion of the optic axes, or the greater or lefs divergency of the rays of light, are fufficient for this purpofe. “ 1 appeal (fays he) to any one’s experi¬ ence, whether, upon fight of an obje8y he compute its diftance by the bignefs of the angle made by the meet¬ ing of the two optic axes ? or whether he ever thinks of the greater er lefs divergency of the rays which arrive from any point to his pupil ? Nay, Whether it be not perfettly impoffible for him to perceive, by fenfe, the various angles wherewith the rays according to their greater or leffer divergency fell upon his eye ?’* That there is a neceffary connection between thefe va¬ rious angles, &c. and different degrees of diftance, and that this connexion is known to every perfoh fkitl- ed in optics, he readily acknowleges ; butin vain (fays he) (ball all the mathematicians la the world tell Vox.. XIII. PartL f C S. S6/ me, that I perceive certain lines aftd cngtesy which in¬ troduce into my mind the various notions of dijlancet fo long as I am myfelf confcious of no fuck thing.” Diftance, magnitude, and even figure, he maintains to be the obje&s of immediate perception only by the fenfe of touch ; and that when we judge of them by fight, it is from different fenfations felt in the eye which experience has taught us to be the confe- quence of viewing obje&s of greater or lefs magrii- tude, of different figures, and at different diftances. Thefc various fenfations, with the refpe&ive diilances, figures, and magnitudes by which they are occafioned, become fo clofely affociated in the mind long before the period of diftinft recolleftioti, that the prefence of the one inftantly fuggefts the other ; and we attri¬ bute to the fenfe of fight thofe notions which are ac¬ quired by the fenfe pf touch, and of which certain, v'fual fenfations are merely the figns or fymbols, juft as words are the fymbols of ideas. Upon thefe prin¬ ciples he accounts, in a manner worthy of the reader’s attention, for fingle vifion by both eyes, and for our v perceiving objefts ereft by inverted images of them oft the retina tunica. Subfequent writers have made great difeoveries in the theory of vifion ; and among them there is hardly any one to whom this branch of fciencc is fo much indebted as to Dr Reid. Their reafomngs, however, our limits will not permit us to detail, nor do they properly belong to this part of the article ; they are coniie&ed with the defeription of the eye itfelf, the various modes of vifion, and opti* cal deceptions to which we are liable; and thefe will be confidered in a fucceeding part of this treatMe. § 6. Of Optical Injlruments, and Dijcoveries concerning them, . So little were the ancients acquainted with the Invemiots icienee of Optics, that they feem to hive had ho in-°f fpec- ftruments of the optical kind, excepting the glafstacles‘ globes and fpeculums formerly mentioned, which they ufed m foms cafes for magnifying and burning. Al- hazen, as we have feen, gave the firft hint of the in¬ vention of fpeilacles, and it is probable that they were found out foon after his time. From the writings of Alhazen, together with the obfervations and experi¬ ments of Roger Bacon, it is not improbable that fome monks gradually hit upon the conftruaion of fpeda- efes ; to which Bacon’s leffer fegment, notwithftand- mg his miftake concerning it, was a nearer approach than Alhazen’s larger one. Whoever they were that purfued the difeoveries of Bacon, they probably ob- lerved, that a very fmall convex glafs, when held at a greater diftance from the book, would magnify the letters more than when it was placed clofe to them, in which pofition only Bacon feems to have ufed it. In the next place, they might try whether two of thefe fmall fegments of a fphere placed together, or a elafs convex on both ftdes, would not magnify more than Ter0f,tiem* r?ey wouW then find, that two of thefe glaffes, one for each eye, would anfwer the pur- pofe o. reading better than one; and laftly, they might find, that different degrees of convexity fuited different perfons. It is certain that fpe&acles were Well known in the J3th century, and not long before. It is faid that Alcx=> 266 O Alexander Spina, a native of Pifa, who died in I3T3» and who was very ingenious in executing whatever he faw or heard of as having been done by others, hap¬ pened to.fee a pair of fpe&acles in the hands of a per- fon who would pot explain them to him ; but that he fucceeded in making a pair for.himfelf, and immedi¬ ately made the conftru&ion public, for the good of others. It is alfo infcribed on the tomb of Salvinus Armatus, a nobleman of Florence, who died 1317, that ^4 he was the inventor of fpeftacles. Of concave The ufe of concave glaffes, to help thofe perfons glafies. who are fhort fighted, was probably a difcovery that followed not long after that of convex ones, for^the relief of thofe whofe fight is defe&ive in the contrary extreme, though we find no trace of this improve¬ ment. Whoever made this difcovery, it was probably the refult of nothing more than a random experiment. Perhaps a perfon who was fhort fighted, finding that convex glaffes did him more harm than good, had the curiofity to make trial of a contrary curvature of the glafs. Peicartes’s From this time, though both convex and concave account of lenfes were fufficiently common, yet no attempt was the inven- made to form a telefcope by a combination of them, tion ef tele-^ enj 0f Century. Defcartes confiders • “°FCS* James Metius, a perfon who was no mathematician, though his father and brother had applied to thofe fciences, as the firft conftruclor of a telefcope ; and fays, that as he was amufing himfelf with making mirrors and burning-glaffes, he cafually thought of looking through two of his lenfes at a time ; and that happening to take one that was convex and another that was concave, and happening alfo to hit upon a pretty good adjuftment of them, he found, that, by looking through them, diftant objedts appeared very large and diftinft. In fadi, without knowing it, he had made a telefcope. ©th?r ac_ Other perfons fay, that this great difcovery was firft counts. made by John Lipperfheim, a maker of fpedtacles at Middleburgh, or rather by his children ; who, like Metius, were diverting themfelves with looking thro’ two glaffes at a time, and placing them at different diftances from one another. But Borellus, the author of a book intitled, T)e vero telefcopii inventore, gives this honour to Zacharias Joannides, i. e. Janfen, ano¬ ther maker of fpedtacles at the fame place, who made the firft telefcope in 1590; and it feems now to be the general opinion, that this account of Borellus is 77 the moft probable. Uorellus’s Indeed, Borellus’s account of the difcovery of tele- accouut fcopes is fo circumftantial, and fo well authenticated, tKe'uue" t^at ^ c^0es not ^eem ts ca^ ‘t in (Iueft,'on* ^ one.' *s not trueJ be this great difcovery was made by a perfon who was no philofopher : for Zacharias Janfen was a diligent inquirer into nature ; and being engaged in thefe purfuits, he was trying what ufes could be made of lenfes for thofe purpofes, when he fortunately hit upon the conftruftion. This ingenious mechanic, or rather philofopher, had no fooner found the arrangement of glaffes that pro¬ duced the effeft he defired, than he inclofed them in a tube, and ran with his inftrument to prince Maurice ; who, immediately conceiving that it might be of ufe to him in his wars, defired the author to keep it a fe- ciet. But this, though attempted for fome time, was ICS* Hiftory. found to be impoffible ; and feveral perfons in that city immediately applied themfclves to the making and felling of telefcopes. One of the moft diftin- guifhed of thefe was Hans Laprey, called Lipperjheim by Sirturus. By him fome perfon in Holland being very early fupplied with a telefcope, he paffei with many for the inventor; but both Metius above-men¬ tioned, and Cornelius Drebell of Alcmar, in Holland, applied to the inventor himfelf in 1620 ; au alto did 7$ Galileo, and many others. The firft'telefcope made The firft by Janfen did not exceed 15 or 16 inches in length ; but Sirturus, who fays that he had feen it, and made^^xcc^ ufe of it, thought it the be ft that he had ever exa- mined. Janfen, having a philofophical turn, prefently ap¬ plied his iRftrument to fuch purpofes as he had in view wdren he hit upon the conftruHion. DiredHng it to¬ wards celeftial ovje£ls, he diftiiuftly1 viewed the fpots on the furface of the moon ; and di[covered many new ftars, particularly feven pretty confiderable ones in the Great Bear. His fon Joannes Zacharias, noted the lucid circle near the limb of the moon, from whence fcveralbright rays feem to dart in different direftions; and he fays, that the full moon-, viewed through this inftrument, did not appear flat, but was evidently s fpherical, the middle part being prominent. Jupiter alfo, he fays, appeared round, and rather fpherical ; and fometimes he perceived two, fometimesthree, and at the moft four fmall ftars, a little above or below him ; and, as far as he could obferve, they performed revolutions round him ; but this, he fays, he leaves to the confideration of aftronomers. This, it is probable, was the firft obfervation of the fatellites of Jupiter, though the perfon who made it was not aware of the importance of his difcovery. _ 79 One Francis Fontana, an Italian, alfo claims the Honour of invention ; but as he did not pretend to have made it the inven- before the year 1608, and as it is well known that the. ^by Fob- inftruments were made and fold in Holland fome time ranai before, his pretenfions to a fecond difcovery are not much regarded. There are fome who fay that Galileo was the inven- A tdefcop* tor of telefcopes ; but he himfelf acknowledges, that made by he firft heard of the inftrument from a German ; but Galileo he fays, that being informed of nothing more than the effedts of it, firft by common report, and a few days after by a French nobleman, J. Badovere, at Paris, he himfelf difeovered the conftrudion, by confidering the nature of refraction: and thus he had much more real merit than the inventor himfelf. The account of what Galileo actually did in this bu- finefs is fo circumftantially related by the author of his life, prefixed to the quarto edition of his woiks, printed at Venice in 1744? and it contains fo many par¬ ticulars, which cannot but be pleafing to every perfon who is interefted in the hiftory of telefcopes, that we [hall abridge a part of it, intermixing circumftances coUe&ed from other accounts. About April or May, in 1609, it was reported at Accountof Venice, where Galileo (who was profeffor of mathe-his difeo- matics in the univerfity of Padua) then happened to veries. be, that a Dutchman had prefented to Count Maurice, of Naffau, a certain optical inftrument, by means of which, diftant objeds appeared as if they were near ; but no farther account of the difcovery had reached * HSftorf. OPT that plate, though this was hear 20 years after the firft difeovery. Struck, however, with this account, Ga¬ lileo initantly returned to Padua, confidering what kind of an inttrument this muft be. The night fol¬ lowing, the conftruttion occurred to him ; and the day after, putting the parts of the inftrument toge¬ ther, as he had previouily conceived of it, and not- withftanding the imperfe&ion of the glaffes that he could then procure, the effedf anfwered his expetta- - tions, as he prefently acquainted his friends at Venice, to which place he fix days afterwards carried another and a better initrument that he had made, and where, from feveral eminences, he fhowed to fome of the principal fenators of that republic a variety of diftant objedts, to their very great artonifhment. When he had made faither improvements in the inftrument, he, with his ufual generofity and franknefs in communi¬ cating his difeoveries, made a prefeut of one of' them to the Doge, Leonardo Donati, and at the fame time to all the fenate of Venice } giving along with the inftrument a written paper, in which he explain¬ ed the ftrudlure and wonderful ufes that might be made of it both by land and at fea. In return for fo noble an entertainment, the republic, on the 25th of Auguft, in the fame year, more than tripled his falary as profeflbr. Our philofopher, having amufed himfelf for fome time with the view of terreftrial objects, at length di¬ rected his tube towards the heavens ; and, obferving the moon, he found that the furface of it was diver- fified with hills and valleys, like the earth. He found that the via laflea and nebula confided of a collection of fixed ftars, which, on account either of their vaft diftance, or extreme fmallnefs, were invifible to the na¬ ked eye. He alfo difeovered innumerable fixed ftars difperfed over the face of the heavens, which had been unknown to all the ancients; and examining Jupiter, with a better inftrument than any he had made before, he found that he was accompanied by four ftars, which, in certain fixed periods, performed revolutions round him, and which, in honour of the houfe of Medici, he called Medicean planets. This difeovery he made in January 1610, new ftyle; and continuing his obfervations the whole of Febru¬ ary following, in the beginning of March next he publilhed an account of all his difeoveries, in his Nun- cius Sidereus, printed at Venice, and dedicated to Cof- mo great duke of Tufcany, who, by a letter which he wrote to him on the 10th of July 1610, invited him to quit Padua, and affigned him an ample fti- pend, as primate and extraordinary profeffor at Pifa, but without any obligation to read lectures, or to re- fide. The extraordinary difeoveries contained in the Nun- cius Sidereus, which was immediately reprinted both in Germany and France, were the caufe of much fpe- culation and debate among the philofophers and aftro- romers of that time ; many of whom could not be brought to give any credit to Galileo’s account, while others endeavoured to decry his difeoveries as being nothing more than fictions or illufions. Some could not be prevailed upon even to look through a tele- fcope ; fo devoted were they to the fyltem t>£ Ariitotle, f nd fo averfe to admit any other fource of knowledge glides his writings. When it was found to be in vain IC S. • 26? to oppofe the evidence of fenfe, fome did not fcruple to aflert that the invention was taken from Ariftotle ; and producing a pafiage from his writings, in which he attempts to give a reafon why ftars are feen in the day-time from the bottom of a deep well, faid, that the well correfponded to the tube of the telefcope, and that the vapours which arofe from it gave the hint of putting glafl’es into it; and laftly, that in both cafes the fight .is ftrengthened by the tranfmiffion of the rays threugh a thick and dark medium. Galileo him¬ felf tells this ftory with a great deal of humour ; com¬ paring fuch men to alchymifb, who imagine that the art of making gold was known to the ancients, but lay concealed under the fables of the poets. In the beginning of July of the fame year, 1610, Galileo being ftill at Padua, and getting an impeifeft view of Saturn’s ring, imagined that that planet con- fifted of three parts ; and therefore, in the account which he gave of this difeovery to his friends, he calls it planetam tergeminam. Whilft he was ftill at Padua, which muft have been either in the fame month of July, 01 the beginning of Auguft following, he obferved fome fpots on the face of the fun : but, contrary to his ufual cuftom, he did not choofe, at that time, to publifti bis difeovery 5 partly for fear of incurring more of the hatred of many obftinate peripatetics ; and partly in order to make more exaft obfeivations on this remarkable phe¬ nomenon, and to form iome conjecture concerning the probable caule of it. He therefore contented himfelf with communicating his obfervations to fome of his friends at Padua and Venice, among whom we find the name of father Paul. This delay, however, was the caufe of this difeovery being contefted with him by the famous Scheieer, who likewife made the fame obfervation in 06t. i6n, and we fuppofe had antici¬ pated Galileo in the publication of it. About the end of Auguft, Galileo left Padua and went to Horence 5 and in November following he w as fatisfied, that, from the September preceding, Venus had been continually increaftng in bulk, and that ihe changed her phafes like the moan. About the end of March 1611, Galileo went to Rome, where he grati¬ fied the cardinals, and all the principal nobility, with a view of the new wonders he had difeovered in the heavens, and among others the folar fpots. from, thefe difeoveries Galileo obtained the name of Named Lynceus, after one of the Argonauts, who was famous m'^yneeu^ antiquity for the acutenefs of his fight; and moreover,!rijmthcro’ the marquis of Monticelli inftituted an academy, with the title of De Lincei, and made him a member of it. Twenty-nine years Galileo enjoyed the ufe of his tele¬ fcope, continually enriching aftronomy with his obfer¬ vations: but by too clofe an application to that inftru¬ ment, and the detriment he received from the nofturnal air, his eyes grewgradually weaker, till in 1639 he became totally blind; a calamity which,however, neither broke his fpirits, nor interrupted the courfe of his ftudies. 8 The firft telefcope that Galileo conftruaed magni- Account fied only three times: but prefently after, he made of his t*. another which magnified iStknes; and afterwards,iefcoPes* with great trouble and expence, he conftru&ed one that magnified 33 times ; and with this it was that he difeovered the fatellites of Jupiter and the fpots of the fun. L 1 2 Notwith* 26$ 84 The ratio¬ nale of the Jnilrument firft difeo- vered by Kepler. 85 General reafon of the effetffs •f tele- feopee. OPT Notwkhftanding Galileo muft be allowed to have eonfiderable merit with refpeA to telefeopes, it was peither that of the perfon who firfl hit upon the con- ftruftion, nor that of him who thoroughly explained the rationale of the inftrument. This important fer- vice to faience was performed by John Kepler, whofe name is famous on many accounts in the annals of phi- lofophy, and cfpecially by his difeovery qf the great law of motioi* refpe&ing the heavenly bodies ; which is, that the fquares of their periodical times are as the cubes of their diltances from the body about which they involve; a propofition which, however, was notdemon- Urated before Sir Ifaac Newton. Kepler was aftrono- mer to feveral of the emperors of Germany; he was the affociate of the celebrated aftrouomer Tycho Brahe, and the maker of Defcartca. Kepler made feveral difeoveries relating to the na¬ ture of vilion ; and not only explained the rationale of the tdefcope which he found in ufe, but alfo pointed out methods of conkrudting others of fuperioi powers and more commodious application. It was Kepler who firft gave a clear explication of the effects of lenfes, in making the rays of a pencil of light converge or diverge. He (bowed, that a plano¬ convex lens makes rays that were parallel to its axis, to meet at the diftance of the diameter of the fphere of convexity ; but that if both fides of the lens be equally convex, the rays will have their focus at the diftance of the radius of the circle, correfponding to that degree of convexity. But he did not invefligate any rule for the foci of lenfes unequally convex. He only fays, in general, that they will Jail fomewhere in the medium, between the foci belonging to the two different degrees of convexity. It is to Cavallieri that we owe this inveftigation. He laid down this rule: As the fum of both the diameters is to one of them, {b is the other to the diftance of the focus. All thefe jHiles concerning convex lenfes are applicable to thofe that are concave ; with this difference, that the focus ic on the contraty fide of the glafs, as will be particu¬ larly ftiown in the fecond part of this treatife. The principal effefts of tekfeopes depend upon thefe plain maxims, viz. That objects appear larger in pro¬ portion to the angles which they fubtend at the eye j and the effect is. the fame whether the pencils of lays, by which obje&s are vifible to us, come diie&ly from the obje&s fchemfelves, or from any place nearer to the eye, where they may have been united fo as to form aa image of the objedft; becaufe they iffue again from thofe points where there is no real fubftance, in certain dire&ions, in the fame manner as they did from the Correfponding points in the objedts thunfelves. In fa&, therefore, all that is cffe&ed by a telefcope is, firft to make fuch an image of a diilant objeft, by means of a lens or mirror; and then to give the eye feme afiiftance for viewing that image as near as pof- fible ; fo that the angle which it ftinll fubtend at the eye, m y be very large compared with the angle which the.objedt itfelf would fubtend in the fame fituation. ^ his is done by means of an eye-glafs, which fo re¬ fracts the pencils of rays, as that they may afterwards be bi ought to their feveral foci by the natural humours ^f the eye. But if the eye was fo formed as to be able fo fee the image with fufficient diftinanefs at the fame diftance without any eye-glafs, it would appear to him l C . S- . Hiftory, as much magnified as it does to another per (bn who makts ufe of a glafs for that pvrrpofe, though he would not in all cafes have fo large a field of view. if, inftead of an eye glafs, an objefl, or the image of an object, be looked at through a fmall hole in a thin plate or piece of paper, held clofe to the eye, it may be viewed very near to the eye, and, at the fame diftance, the apparent magnitude of the objed will be the fame in both cafes. For if the hole be fo fmali as to admit but a fingle ray from every diftind point of the object* thefe rays will fall upon the retina in as many othef- diftind points, and make a dillind image. They are only pencils or cones of rays, which have a fenlibla bale, as the breadth of the pupil, that are capable, by their fpreading on the retina, of producing an indi- ftind image. As very few rays, however, can be admitted through a fmall hole, there will feldom be light fuilicient to view any objed to advantage in thi* manner. If no image be adually formed by the foci of the pencils without the eye, yet if, by the help of any eye- glafs, the pencils of jays fnall enter the pupil, juft as they would have done trom any place without the eye, the vifual angle will be the fame as if an image had adually been formed in that place. Objeds will not appear inverted through this telefcope, becaufe the pen¬ cils which form the images of them, only crofs one an¬ other once, viz. at the objtd glafs, as in natural vi- fion they do in the pupil of the eye. Such is the telefcope that was firft: difeevered and GalleMr ufed by philofophers; and it is remarkable that ittelefcope fhould be of a much more difficult conftrudion than more fome other kinds that have been invented fwice. great inconvenience attending it is, that the field of than other*, view is exceedingly fmall. For fince the pencils of rays enter the eye very much diverging from one ano¬ ther, but few of them can be intercepted by the pu¬ pil, this inconvenience increafes with the magnifying power of the telefcope; fo that philofophers at this day cannot help wondering, that it was polfibie, with fuch an inftrument, for Galileo and others to have mada the difeoveries they did. It muft have required incre¬ dible patience and addrefs. No other telefcope, how¬ ever, than this, was fo much as thought of for many years after the difeovery. Defcartes, who wrote 30 years after, mentions no others aaa&ually conftrudied, though Kepler had fuggefted fome. ^ It is to this great man that we are indebted for the Telefcope* conftru&ion of what we now call, the ajirommical tele- improved fcopey being the beft adapted for the purpofe of viewing hy Kepler, the heavenly bodies. The rationale of this inftrument is explained, and the advantages of it ate clearly pointed out, by this philofopher, in his Catoptrics ; but, what is very furprifing, he never a&ually reduced his excel¬ lent theory into praftice. Montucla conje&ures, that, the reafon why. he did not make trial of his new con- ftru&ion was, his not being aware of the great increafe of the field of view ; fo that being engaged in othen purfuits, he might not think it of much confequcnee to take any pains about the conftrucfion of an inftru* ment, which could do little more than anfwer the fame purpofe with thofe of which he was already poffeffed. He muft alfo have forefeen, that the length of this te- , lefcope muft have been greater in proportion to it* magnifying power; fo that it might appear to him ta 3 ba rliftory. ^ ^ ^ be upon the whole not quite fo good a conftru£ion as 8g the former. Hii method it was not long, however, before Kepler’s new grft put iii fcheme of a tclefcope was executed } and the firft per- iraaice by iQn wh<> a^UHny ma(le an inftrument of this conftruc* »c euier was father §chetner, who has given a deicription of it in his Ro/a Ur/ma, publiftied in <630. If, fays he, you infcrt two fimijar lenfes (that is, both convex) in a tube, and pla^e your eye at a convenient diftance, you will fee all terreitrial objects inverted, indeed, but magnified and very diftinf-t, with a confiderable extent of view. He afterwards fubjoins an account of a te- lefcope of a different conifruCtion, with two convex eye-glafies, which again revet fes the images, and makes them appear in their natural pofition. 1 his difpofition of the lenfes had alfo been pointed out by Kepler, but hxd not been reduced to pra&ice by him, any more than the former. This conftrudtion, however, anfwer- ed the end but very imperfectly ; and l ather Rheita prefentiy after hit upon a better conflruCtion, ufing three eye glaffes inftcad of two. This got the name of the terrejlrial i(hJcopey being chiefly uied for terre- firial objeCts. The fir ft and laft of tbefe couftruCtions are thofe which are now in common ufeT The proportion in which the firft telefeope magnifies, is as the focal length of the objeCt-glafs to that of the eye-glafs.— The only difference between the Galilean telefcope and the other is, that the pencils by which the extre¬ mities of any cbjeCt are feen in this cafe, enter the eye diverging ; whereas, in the other, they enter it con¬ verging ; but if the fphere of concavity in the eye- glafs of the Galilean telefcope be equal to the fphere of convexity in the eye-glafs of another telefcope, their magnifying power will be the fame. I he concave eye glafsj however, being placed between the objeCt- glafs and its focus, the Galilean telefcope will be fhorter than the other, by twice the focal length of the eyc-glafs. Confequently, if the length of the te- lefcopes he the fame, the Galilean, will have the greater magnifying power. nUy cnsi -^ie invcnt*on t^ie telefcope and microfcope ha- grtatly im-ving incited mathematicians to a more careful ftudyof proves the dioptrics, and this having foon become almoft a per- means of the difeovery of Snellius, atiURheita niany different conftruAions were offered to the public. Huygens was particularly eminent for his fyftenratic knowledge of the fubjedt, and is the author of the chief improvements which Lave been made on all the dioptrical inflruments till the time of Mr Dollond’s difeovery. He was well acquainted with the theory Of aberration ariliug from the fpbcrical figure of the glaffcs, and has fhowed fewral ingenious methods of dimini(hing them by proper conftru&ions of the eye- pieces. He firft (hewed the advantages of tv o eye¬ glaffes on the aftronomical tclcfcope and double mi¬ crofcope, and gave rules for this confirn&ion, which both enlarges the field and fhortens the inftrument.. Mr Dollond adapted his conftru&ian to the terreftrial telefcope of De Rheita ; and his five eye-glafl’es are no- ibing but the Huygenian eye-piece doubled. This conftrudtion has been too haftily given up by tht ar- tifts of the prefent day for another, alfo of Mr Dol- lond’s, of four glaffes* Vifion is more diffind in the Galilean tele ft ope. than a? Huygens. I c in the other, owing perhaps in ptrt to the* being no 9° intermediate image between the eye and the objed. dj Befides the eye-glafs being very thin in the centre, theualilearj the rays will be lefs liable to be diftorted by irregnla- telefcopea. rities in the fuhftance of the glafs. Whatever be the caufe, we can fometimes fee Jupiter’s fatellites very clearly in a Galilean telefcope not more than twenty inches or two feet long; when one of four or five feet, of the common fort, will hardly make them vifible. 9, The fame bather Rheita, to whom we are indebted Binocular for the vrfeful conftru&ion of a telefeope for land-1elcrcoPe* obje&s, invented a binocular telefcope, which Father Cheruhin, of Orleans, endeavoured to bring into ufe afterwards. It confifts of two telefcopcs faftened to¬ gether, and made to point to the fame objed. When this inftrument is well fixed, the objeft appears larger, and nearer to the eye, when it is feen through both the telefcopes, than through one of them only, though they have the very fame magnifying power. But this is only an iliufion, occafioned by the ftronger impref- fion that two equal images, equally illuminated, make upon the eye. This advantage,' however, is counter¬ balanced by the inconvenience attending the ufe of it. 92 The firft who diftinguifhed themfelves in .grinding Tchfwpei^ telefcopic glares were two Italians, Euftachio Divini an(J at Rome, and Campaui at Bologna, whofe fame was much fuperior to that of Divini, or that of any other perfon of his time ; though Divini himfelf pretended, that, in all the trials that were made with their glaffes, his, of a great focal diftance, performed better than thofe of Campani, and that his rival was not willing to try them fairly, viz. with equal eye-glaffes. It is generally fuppofed, however, that Campani really ex¬ celled Divini, both in thegoodnds and the focal length of his objed-glaffes. It was with telefcopes made by Campani that Caffini difeovered the neareft fatellites of Saturn. They were made by the expiefs order of Louis XIV. and were of 86, 100, and 136 Pariiiaa feet focal length* Campani fold his lenfes for a great price, and took, every pofiible method to keep his art of making them a fecret. His laboratory was inacceffible to all the world, till after his death; when it was purchafed by Pope Benedift XIV* who made a prefent of it to the. academy called the Injlitute, eftablilhed in that city and by the account which M. Fougeroilx has given of what he could difeover from it, we learn, that (except; a machine, which M. Campani conftru&ed, to work the bafons on which he ground his glaffes) the good— nefs of his lenfes depended upon the clearnefs of hii glafs, his Venetian tripoli, the paper with which he polifhed his glades, and his great (kill and addrefs ar- a workman. It was alfo the general opinion at Bo¬ logna, that he owed a great part of his reputation, to the fecrecy and air of myftery which he affe&ed ;. and that he- made a- great number of objeft-glaffea. which he reje&ed, fhowing only thofe that were very good. He made few lenfes of a very great focal di¬ ftance ; and having the misfortune to break one of 141 feet in two pieces, he took incredible pains to join the two parts together, which he did at length effe&ually, fo that it was ufed as if it had been entire j. but it is not probable that he would have taken fo much -pains about it, if, as he pretended, he couLL' very eafily have made another as good-, Stpr ^<9 93 Extraordi¬ nary objecft glafs made l>y Mr Wiuzout, , 94 Telefcopes lifed with- £ at tubes. Plate €CCL1V, OPT Sir Paul Nellie, Dr Hooke fays, made telefcopes of 36 feet, pretty good, and one of 50, but not of proportional goodnefs. Afterwards Mr Reive firft, and then Mr Cox, who were the mcft celebrated in England as grinders of optic glades, made feme good ones of 50 and 60 feet focal diftance, and Mr Cox made one ot 100; ;but how good, Dr Hooke could net affert. ^ Borelh alfo, in I'ranee, made objeft-glafTes of a great focal length, one of which he prefented to the Royal Society ; but we do not find any particular ac¬ count of their goodnefs. With refpedt to the focal length of telefcopes, thefe and all others were far exceeded by M. Auzout, who made one object-glafs of 600 feet focus} but he was never able to manage it, fo as to make any ufe of it. Hartfocker is even faid to have made fome of a ftill greater focal length ; but this ingenious mechanic, finding it impoffible to make ufe of objeft-glafies the local diftance of which was much lefs than this, when they were inclofed in a tube, contrived a method of ufing them without a tube, by fixing them at the top of a tree, a high wall, or the roof of a houfe. Mr Huygens, who was alfo an excellent mechanic, made confiderable improvements in the method of ufing an objeft-glafs without a tube. He placed it at the top of a very long pole, having previously in- clofed it in a fhort tube, which was made to turn in all directions, by means of a ball and focket. The axis of this tube he could command with a fine filken firing, fo as to bring it into a line with the axis of another ftiort tube, which he held in his hand, and which contained the eye-glafs. In this method he could make ufe of object-glafles of the greateft magni- fymg power, at whatever altitude his object was, and even in the zenith, provided his pole u’as as long as his telefcope ; and, to adapt It to the view of objects of different altitudes, he had a contrivance, by which he could raife or deprefs a ftage that fupported his ob¬ ject-glafs at pleafure. M. De la Hire made fome improvement in this method of managing the object-glafs, fixing it in the centie of a board, and not in a tube ; but as it is not probable that this method will ever be made ufe of, once the difeovery of both reflecting and achromatic telefcopes, which are now brought to great perfetion, and have, even micrometers adapted to them, we fhall not deferibe this apparatus minutely ; but lhall only give a drawing of M. Huygens’s pole, which, with a very fnort explanation^ will be fufficient for the pur» P°fc- %• reprefents a pulley, by the help of which a ftage c, under the article Telefcope, and M. Montecula in 4 3iftory. ° . f.... , it appears, Tiad never perufed tlie two letters of Def- cartes to Mtrfcnnus which briefly touch on that fub- jedl. Again, as to his aflertion, that Gregory’s conftruc- tion was not nearly fo advantageous as Newton’s, it may be accounted for from his having fet it down ear¬ ly in the compofition of his work, and forgetting to qualify it afterwards, when, before the publication, he had received pretty fure information to the contrary. Or perhaps he was influenced by the example of Or Bradley, who had been a moft fuccefsful obferver, and yet had always preferred the Newtonian telefcope to the other. But we mull certainly adjudge the fupe- riority to the latter, as that is now, and has been for leveral years pall, the only inllrument of the kind in requeft. Gregory, a young man of an uncommon genius, was led to the invention, in feeking to correct two im- perfedtions of the common telefcope : the fird was its too great length, which made it lefs manageable ; the fecond, the incorrednefs of the image. Mathemati¬ cians had demonitrated, that a pencil of rays could not be colk&ed in a Angle point by a fpherical lens ; and alfo, that the image tranfmitted by fuch a lens would be in fome degree incurvated. Thefe incon¬ veniences he believed would be obviated by fubllituting for the objed-glafs a metallic fpeculum, of a parabo¬ lic figure, to receive the image, and to refled it to¬ wards a fmall fpeculum of the fame metal : this again was to return the image to an eye-glafs placed behind the great fpeculum, which for that purpofe was to be perforated in its centre. This conftrudion he publifh- ed in 1663, in his Optica Prnmota. But as Gregory, by his own account, was endowed with no mechani¬ cal dexterity, nor could find any workman capable of realizing his invention, after fome fruitlefs attempts in that way he was obliged to give up the purfuit: and probably, had not fome new difeoveries been made in light and colours, a refrading telefcope would never more have been thought of, confidering the difficulty of the execution, and the fmall advantages that could accrue from it, deducible from the principles of optics that w'ere then known. But Newton, whofe genius for experimental know¬ ledge was equal to that for geometry, happily inter- pofed, and faved this noble invention from well nigh perifhing in.its mfant-ftate. He likewife at an early period of life had applied himfelf to the improvement of the telefcope ; but imagining that Gregory’s fpe- cula were neither very neceflary, nor likely to be exe¬ cuted, he began with profecuting the views of Defcar- tes, who aimed at making a more perfed image of an objed, by grinding lenfes, not to the figure of a fphere, but to that of one of the conic fedions. Now, whilft he was thus employed, three years after Gregory’s publication, he happened to take to the examination of the colours formed by a prifm, and having by the means of that Ample inftrnment difeovered the diffe¬ rent refrangibility of the rays of light, he then per¬ ceived that the errors of telefcopes, arifing from that caufe alone, were fome hundred times greater than fuch as were occafioned by the fpherical figure of lenfes. This circumftance forced, as it were, Newton to fall into Gregory’s track, and to turn his thoughts to refledors. “ The different refrangibility of the I c s. rays of light (fays he, in a lettter to Mr Oldenburg, fecretary to the Royal Society, dated in Feb. 1672) made me take refledions into confideration ; and find¬ ing them regular, fo that the angle of refled ion of all forts of rays was equal to the angle of incidence, I un- derilood that by their mediation optic inllruments might be brought to any degree of perfedion imagin¬ able, providing a refleding fubftance could be found which would polifli as finely as glafs, and refled as much light as glafs tranfmits, and the art of comrnu- nicaung to it a parabolic figure be alio obtained. A- miclft thefe thoughts I was forced from Cambridge by the intervening plague, and it was more than two yeaiu before I proceeded further.” It appears, then, that if Newton avas not the Aril inventor of the refleding tclefcope, he was the main and effedual inventor. By the force of his admirable genius, he fell upon this new property of light; and thereby found, that all lenfes, of whatever figure, would' be affeded more or lefs with fuch prifmatic aberrations of the rays as would be an infuperable obftacle to the perfediott of a dioptric telefcopc. It was towards the end of 1668, or in the beginning of the following year, when Newton, being thus obli¬ ged to have recourfe to refledors, and not relying on any artificer for making his fpecula, fet about the work; himfelf, and early in the year 1672 completed two fmall refkding tclefcopes. In thefe he ground the great fpeculum into a fpherical concave ; not but that he approved of the parabolic form propofed by Gre¬ gory, though he found himfelf unable to accomplifli it. In the letter that accompanied one of there in- liniments which he prefented to the Society, he writes, “ that though he then defpaired of performing that work (to wit, the parabolic figure of the great fpecu- lum) by geometrical rules, yet he doubted not but that the thing might in fome meafure be accomplilhed by meobanical devices.” Not lefs did the difficulty appear to find a metallic fubllance that would be of a proper hardnefs, have the feweft pores, and receive the fmoocheft polilh : a dif¬ ficulty in truth which he deemed almoft unfurmount- able, when he confidered, that every irregularity in a- refleding furface would make the rays of light ftray five or fix times more out of their due courfe, than the like irregularities in a refrading one. In another let¬ ter, written foon after, he tells the fecretary, “ that he was very fenfible that metal refleds lefs light than glafs tranfmits ; but as he had found fome metallic fubftances to be more llrongly refledlive than others, to polifh better, and to be freer from tarniilring than others, fo he hoped that there might in time be found out fome fubllances much freer from thefe inconveniences than any yet known.” Newton there¬ fore laboured till he found a compofition that anfwer- ed in fome degree, and left it to thofe who Ihould- come after him to find a better, and prefented a re¬ fleding telefcope to the Royal Society; from whom he received fuch thanks as were due to fo curious and va¬ luable a prefent. And Huygens, one of the greateffi geniufes of the age, and himielf a diffinguifhed impro¬ ver of the refrador, no fooner was informed by Mr. Oldenburg of the difeovery, than he wrote in anfwer* “ that it was an admirable telefcope ; and that Mr. Newton had well conlidered the advantage which a concave ■2 OPT toncave fpecultim had above convex glades in colleft- ing the parallel rays, which according to his own cal¬ culation was very great: Hence that Mr Newten could give a for greater aperture to that fpeculum than to an objeft-glafs of the fame diftance of focus, and confequently much more magnify in his way than by an ordinary telefcope : Befides, that by the refleftor he avoided an inconvenience infeparable from obje&- glafleSj which was the obliquity ©f both their fur- faces, which vitiated the refraction of the rays that pafs towards the lides of^the glafs, and did more hurt than men were aware of: Again, that by the mere •refleftion of the metalline fpeculum there were not fo •many rays loft as in glaftes, which rtfleCfed a confide- rable quantity by each of their furfaces, and befides in¬ tercepted many of them by the obfeurity of their mat* ter: That the main bufinefs would be, to find a mat¬ ter for this fpeculum that would bear as good and even a polilh as glafs. Laftly, he believed that Mr Newton had not been without confidering the advantage which a parabolic fpeculum would have over a fpherical one in this conftru&ion ; but had defpaired, as he himfelf had done, of woiking other furfaces than fpherical ones with due exaftnefs.” Huygens was not fatisfied with thus expreffing to the fociety his high approba¬ tion of the late invention ; but drew up a favourable account of the new telefcope, which he caufed to be publifhed in the 'Journal des S^avans for the year 1672, and by that channel it was foon known over Europe. But how excellent foever the contrivance was; how well foever fupported and announced to the public ; yet whether it was that the artifts were deterred by the difficulty and labour of the work, or that the dif- coveries even of a Newton were not to be exempted from the general fatality attending great and ufeful in¬ ventions, the making a flow ami vexatious progrefs to the authors ; the fad is, that, excepting an unfuccefsful attempt which the fociety made, by employing an artificer to imitate the Newtonian conftruftion, but upon a larger fcale, and a difguifed Gregorian tele¬ fcope, fet up by Caflegrain abroad as a rival to New¬ ton's, and that in theory only (for it never was put in execution by the author), no refleftor was heard of for nearly half a century after. But when that period was clapfed, a reflecting telefcope was at lift produced to the world of the Newtonian conftruftion by Dr Had ¬ ley, which the author had the fatisfa&ion to find executed in fuch a manner as left no room to fear that the invention would any longer continue in ob¬ feurity. This memorable event was owing to the genius, dexterity, and application, of Mr Hadley the in¬ ventor of the refttdling quadrant, another moft va¬ luable inftrument. The two telefcopes which New¬ ton had made were but fix inches long, were held in the hand for viewing objefts, and in power were compared to a fix-feet refradlor; whereas Had¬ ley s was above five Feet Jong, was provided with a well-contrived apparatus for managing it, and equalled in performance tbe famous aerial tclefcope of Huy¬ gens of 123 feet in length. Excepting as to the man¬ ner of making the fpecula, we have, in the tranfaftions *723* a complete deferiptiem, with a figure, of this * toget^er 'with that of the machine for mo* N°247. ICS. Hiftory, ving it; but, by a ftrange omiflion, Newton'» n»me« not once mentioned in that paper, fo that any per- fon not acquainted with the hiftory of the inven¬ tion, and reading that account only, might be apt to conclude that Hadley had been the foie contriver of it. The fame celebrated artift, after finifhing two tcle- fcopes of the Newtonian conftru&ion, accompliftied a third in the Gregorian way ; but, it would feem, lef« fuccefsfully, by Dr Smith’s declaring fo ftrongly in favour of the other. Mr Hadley fpared no pains to inllrudt Mr Molyneux and the reverend Dr Bradley ; and when thofe gentlemen had made a fufficient pro¬ ficiency in the art, being defirous that thefe tclefcopeg Ihould become more public, they liberally communica* ted to fome of the principal inftrument-makers of Lon¬ don the knowledge they had acquired from. him. Now fuch fcholars, as it is eafy to imagine, foon advanced beyond their mailers, and completed refle&ors by other aad better methods than what had been taught them. Certain it is, atleaft, that Mr James Short, as early as the year 1734, had fignajifed himfelf at EdinburgJt by his work of this kind. Mr Maclaurin wrote that year to Dr Jut in, “ that Mr Short, who had be¬ gun with making glafs fpecula, was then applying himfelf to improve the metallic ; and that, by taking care of the figure, he was enabled to give them larger apertures than others had done ; and that upon the whole they furpafled in perfeftion all that he had feen of other workmen.” He added, “ that Mr Short’s telefcopts were all of the Gregorian conftruc- tion ; and that he had much improved that excellent invention.” This chara&er ef excellence Mr Short maintained to the laft ; and with the more facility, as he had been well grounded both in the geometrical and philofophical principles of optics, and upon the whole was a moft intelligent perfon in whatever rela¬ ted to his profeffion. It was fuppofed he had fallen upon a method of giving the parabolic figure to hie great fpeculum ; a point of perfe&ion that Gregory and Newton had wiffied for, but defpaired of attain¬ ing ; and that Hadley had never, as far as we know, attempted, either in his Newtonian or Gregorian te* lefcope. Mr Short indeed faid he had acquired that faculty, but never would tell by what peculiar means he effe&ed it ; fo that the fecret of working that con¬ figuration, whatever it was, as far as it then appear* ed, died with that ingenious artift. Mr Mudge, how¬ ever, hath lately realifed the expeddation of Sir Ifaac Newton, who, above 100 years ago, prefaged that the public would one day polfefs a parabolic fpeculum, not accompliftied by matheimtical rules, but by me¬ chanical devices. This was a deflderahim, but it was not the only want fupplied by ibis gentleman : he has taught ua likewife a better compnfition of metals for the fpecu¬ la, how to grind them better, and how to give them a finer polifh ; and this laft; part, (namely, the polifh), he remarks, was the moft difficult and effential of the whole operation. ** In a word (fays Sir John Pringle), I am of opinion, there is no optician in this great city (which hath been fo long and fo juftly renowned for ingenious and dexterous makers of every kind of ma¬ thematical inllruments) fo partial to^his own abilitiea as Hiftoiy. 9« Mr Ed OPT as not to acknowledge, that, however fome parts of the mechanical procefs now difclofed might have been known before by individuals of the profeflion, yet that Mr Mudge hath opened to them all fome new and important lights, and upon the whole hath greatly improved the art of making refleding tele* fcopes.” The late reverend and ingenious John Edwards de* ward "s im-voted much of his time to the improvement of re- j rovement? flg&ing telefcopes, and brought them to fuch per- fier Mafkelyne^ the aftronomer royal, kfcope! e" found telefcopes conftru&ed by him to furpafs in brightnefs, and other effentials, thofe of the fame fize made by the be ft artifts in London. The chief ex¬ cellence of his telefcopes arifes from the compofition, which, from various trials on metals and femimetals, he difcovered for the fpecula, and from the true pa¬ rabolic figure, which, by long pra&fce, he had found a method of giving them, preferable to any that was known before him. His dircdtions for the compofition of fpecula, and for cafting, grinding, and polifhing them, were publiflied, by order of the commiflioners of longitude, at the end of the Nautical Almanack for the year 1787. To the fame almanack is alfo an¬ nexed his account of the Caufe and cure of the tre¬ mors which particularly affedt refledling telefcopes more than refradling ones, together with remarks on the faid tremors by Dr Mafkelyne. See Telescope. But in conftru&ing reflecting telefcopes of extra¬ ordinary magnifying powers, Dr Herfchel has dif- played (kill and ingenuity furpafling all his predeceflbrs in this department of mechanics. He has made them from 7, 10, 20, to even 40 feet in length ; and with the inftrument of thefe latter dimenfions he is now em¬ ployed in making difcoveries in aftronomy. Of its conftrudtion, magnifying powers, and the curious col¬ lection of machinery by which it is fupported and moved from one part of the heavens to another, ac¬ counts will be given under the word Telescope. The greateft improvement in refraBing telefcopes hitherto made public (c) is that of Mr Dollbnd, of which an account has already been given in a preced¬ ing feCtion, wherein his difcoveries in the fcience of Optics were explained. But, befides the obligation we are under to him for correcting the aberration of the rays of light in the focus of objeCt-glaffes, arifing from their different refrangibility, he made another confiderable improvement in telefcopes, viz. by cor* reCting, in a great meafure, both this kind of aber¬ ration, and alfo that which arifes from the fpherical form of lenfes, by an expedient of a very different nature; viz. increafing the number of eye-glaffes. If any perfon, fays he, would have the vifual angle of a telelcope to contain 20 degrees, the extreme pen¬ cils of the field muft be bent or refra&ed in an angle S'rovemeiits0f IO degrees . which, if it be performed by one eye- glafs, will caufe an aberration from the figure, in pro- Vol. XIII. Part I. 99 Herfchel’s improve¬ ments. TOO Account of Mr Dol- lond’s im- I c s> portion to the cube of that angle ; but if two glades are fa proportioned and fituated, a$ that the refraClion may be equally divided between them, they will each of them produce a refraClion equal to half the required angle ; and therefore, the aberration being in propor¬ tion to the cube of half the angle taken twice over, will be but a fourth part of that which is in propor¬ tion to the cube of the whole angle ; becaufe twice the cube 0P1 is but \ of the cube of 2 ; fo the aber¬ ration from the figure, where two eye-glaffes are rightly proportioned, is but a fourth of what it muft unavoidably be, where the whole is performed by a fingle eye-glafs. By the fame way of reafoning, when the refraClion is divided between three glaffes, the aberration will be found to be but the ninth part of what would be produced from a fmgle glafs ; becaufe three times the cube of 1 is but one-ninth of the cube of 3. Whence it appears, that by increafing the num¬ ber of eye-glaffes, the indiftinClnefs which is obfer- ved near the borders of the field of a telefcope may be very much diminifhed, though not entirely taken away. The method of correCling the errors arifing from the different refrangibility of light is of a different con- fideration from the former. For, whereas the errors from the figure can only be diminiftied in a certain proportion according to the number of glaffes, in this they may be entirely correCled by the addition of only one glafs; as we find in the aftronomical telefcope, that two eye-glafles, rightly proportioned, will caufe the edges of objeCls to appear free from colours, quite to the borders of the field. Alfo in the day-telefcope, where no more than two eye-glaffes are ahfolutely ne- ceffary for ereCling the objeCt, we find, that by the addition of a third, rightly fituated, the colours, which would otherwlfe make the image confufed, are entirely removed. This, however, is to be under- ftood with fome limitation : for though the different colours into which the extreme pencils muft neceffarily be divided by the edges of the eye-glaffes, may in this manner be brought to the eye in a direClion pa¬ rallel to each other, fo as, by the humours of the eye, to be made to converge to a point on the retina ; yet, if the glaffes exceed a certain length, the colours may be fpread too wide to be capable of being admitted through the pupil or aperture of the eye; which is the reafon, that in long telefcopes, conftrudled in the common manner, with three eye-glaffes, the field is al¬ ways very much c@ntra6led. Thefe confiderations firft fetMr Dollond on contri¬ ving how to enlarge the field, by increafing the num¬ ber of eye-glaffes without any hinderaace to the diftinil- nefs or brightnefs of the image ; and though others had been about the fame work before, yet, ohferving that fome five-glafs telefcopes which were then made would admit of farther improvement, he endeavoured to conltrudl one with the fame number of glaffes in a M m better (c) Dr Blair’s difeovery, mentioned n° 19, will undoubtedly lead to improvements fuperior to thofe of Dollond; but as his memoir on the fuhjecl is not yet publiflied, we feel not ourfelves at liberty to make longer extra&s from it. The reader will fee the whole in the Philafophical Tranfaftions of the Royal Society of Edinburgh, whenever that body {hall be pleafed to favour the public with a third volume ef its learned labours. 273 274 OPT better manner; which fo far anfvvered his expe&ations, as to be allowed by the beft judges to be a confider- able improvement on the former. > Encouraged by this fuccefs, he refolved to try if he could not make fome farther enlargement of the field, by the addition of another glafs, and by placing and proportioning the glafies in fuch a manner as to cor¬ rect the aberrations as much as poffible, without any detriment to the diftinitnefs ; and at laft he obtained as large a field as is convenient or neceffary, and that even in the longed telefcopes that can be made. Thefe telefcopes with fix glafies having been well received, and fome of them being gone into foreign parts, it feemed a proper time to the author to fettle the date of his invention ; on which account he drew up a letter, which he addreffed to Mr Short, and which rot was rea^ at t^e R°yal Society, March I. 1753 (d). Mr Smith’s Various other attempts were made about this time propofal to to fhorten and otherwife improve telefcopes. A- Icfccrei C mon£ we muh juft mention that of Mr Caleb 1 ‘ Smith, who, after giving much attention to the fubjedf, thought that he had found it pofilble to redfify the errors which arife from the different degrees of refran- gibility, on the principle that the fines of refraction, or rays differently refrangible, are to one another in a given proportion, when their fines of incidence are equal; and the method which he propofed for this purpofe was to make the fpeculums of glafs inftead of metal, the two furfaecs having different degrees of con¬ cavity. But we do not find that his fcheme was ever executed; nor is it probable,for reafons which have been mentioned, that any advantage could be made of it. To Mr Short we are indebted for the excellent con¬ trivance of an equatorial telefcope, or, as he likewife or portable, called it, a portable olfervatory ; for with it pi-etty ac- obferva- curate obft nations maybe made with very little trouble, by thofe who have no building adapted to the purpofe. The inftrament confifts of an ingenious piece of ma¬ chinery, by the help of which a telefcope mounted upon it may be diredled to any degree of right afeen- fion or decimation, fo that the place of any of the heavenly bodies being known1; they may be found without any trouble, even in the day-time. Alfo, being made to turn parallel to the equator, any objedt is eafily kept in view, or recovered, without moving the eye from its fituation. By this inftrument, Mr Short informs us, that mofl of the ftars of the firfl and fecond magnitude have been feen even at mid¬ day, and the fun fhining bright; as alfo Mercury, Venus, and Jupiter. Saturn and Mars are not fo eafy to be feen, on account of the faintnefs of their light, except when the fun is but a few hours above the ho¬ rizon. This particular effeft depends upon the tele¬ fcope excluding almoft all the light, except what comes from the objedf itfelf, and which might other- wife efface the impreffion made by its weaker light upon the eye. Any telefcope of the fame magnifying power would have the fame effedt, could we be fure of pointing it right. For the fame reafon, alfo, it is that Itars are vifible in the day-time from the bottom of a deep pit. Mr Ramfden has lately invented a portable observatory or equatorial telefcope, which may perhaps 102 Equatorial tory. fuperfede the ufe of Mr Short’s. See Astronomy, llO504* IO, In order to enable us to fee the fixed Bars in the How to ob- day-time, it is necefiary to exclude the extraneous ferve the light as much as pofifible. For this reafon the greater itars '.n the magnifying power of any telefcope is ufed, the more and cut it with a diamond into as many Bifkrs. ° lengths as he thought proper, not exceeding of an inch in breadth ; then, holding one of them between the fore finger and thumb of each hand over a very fine flime, till the glafs began to foften, he drew it out till it was as fine as a hair, and broke ; then put¬ ting each of the ends into the purelt part of the flame, he had two globules prefently, which he could make larger or lefs at pleafure. If they were held a long time in the flame, they would have fpots in them, fo that he drew them out prefently after they became round. The ftem he broke off as near to the globule as he could, and lodging the remainder between the plates, in which holes were drilled exa&ly round, the microfcope, he fays, performed to admiration. T. hro thefe magnifiers, he fays, that the fame thread of very fine muflin appeared three or four times bigger than it slid in the largeff. of Mr Wilfon’a magnifiers. Terv'orar The ingenious Mr Grey hit upon a very eafy expe- nlicrofcoptr- dient to make very good temporary microfcopes, at a by Mr very little expence. They confiit of nothing but very GreJ’* fmall drops of water, taken up with a point of a pin, and put into a fmall hole made in a piece of metal. Thofe globules of water do not, indeed, magnify fo much as thofe which are made of glafs of the fame fize, becaufe the refra&ive power of water is not fo great ; but the fame purpofe will be aafwered nearly as well by making them fomewhat fmaller. The fame ingenious perfon, obferving that fmall he¬ terogeneous particles inclofed in the glafs of which mi¬ crofcopes are made, were much magnified when thofe glaffes were looked through, thought of making his microfcopes of water that contained living animalcula, to fee how they would look in this new fituation ; and he found his fcheme to anfwer even beyond his utmoft ( expe&ation, fo that he could not eten account for their being magnified fa. much as they were : for it was much more than they would have been magnified if they had been placed beyond the globule, in the pro¬ per place for viewing obje&&. But Montucla obferves, that, when any obje& is inclofed within this fmall tranfparent globule, the hinder part of it a&s like a concave mirror, provided they be fituated between that furface and the focus i and that, by this means, they I C S. Hiftcry, are magnified above times more than they would have been in the ufuahway. ^ After the happy execution of the refle&ing tele-nr Bicker# fcope, it was natural to expe& that attempts wouldieflt&mg alfo be made to render a fimilar fervice to microfcopes. Accordingly we find two plans of this kind. The firft was that of Dr Robert Barker. His imlrument differs in nothing from the refle&ing telefcope, ex¬ cepting the diftance of the two fpeculums, in order to adapt it to thofe pencils of rays which enter the mi¬ crofcope diverging; whereas they come to the tele¬ fcope from very diftant objedts nearly parallel to each other. » This microfaope is not fo eafy to manage as the common fort. For vifion by refte&ion, as it is much more perfe&, fo it is far more difficult than that by refra&ion. Nor is this microfcope fo ufeful for any but very fmall or tranfparent obje&s. For the obje&, being between the fpeculum and image, would, if it were large and opaque, prevent a due refle&ion. rr^ Dr Smith invented a double refle&ing microfcope, Dr Smith’s of which a theoretical and pra&ical account is given reileet ng in the remarks on the fecond volume of his Syltem of |n‘cro^colJ4: Optics. Through fome of thofe incidents to which ^[^rhers.0 the condu&ing of a work fo multifarious as ours is always liable, this inftrument was omitted under the article Microscope. As it is conftru&ed on prin¬ ciples effentially different from all others, and, in the opinion of the ablefl: judges whom we have confulted, incomparably fuperior to them all, the reader will not be ill pleafed with the following pra&ical defeription, though it appears not perhaps in its moll proper place. Fig. 2. is a fe&ion of this microfcope, where ABC pqqj ^ and abc are two fpecula, the former concave, and the latter convex, inclofed within the tube DEFG. The fpeculum ABC, is perforated like, the fpeculum of a Gregorian telefcope; and the obje& to be magnifiedis fo placed between the centre and principal focus ot thac ipeculum, that the rays flowing from it to ABC are refle&ed towards an image pq. But before they are united in that image they are received by the convex fpeculum abey and thence refle&ed through the hole BC in the vertex of the concave to a fecond image ’I"*, to be viewed through an eye glafs /. The obje& may either be fituated between the two fpecula, or, which is perhaps better, between the principal focus and vertex c of the convex fpeculum abc, a fmall hole being made in its vertex for the incident rays to pafc through. When the microfcope is ufed, let the ob- je& be included between two little round plates of Mofcevy-glafs, fixed in a hole of an oblong brafs plate mn, intended to Aide clofe to the back fide of the con¬ vex fpeculum; which muff therefore be ground flat on that fide, and fo thin that the obje& may come pre- cifely to its computed diftance from the vertex of the fpeculum. The Aider muft be kept tight to the back of the metal by a gentle fpring. The diftance of the obje& being thus determined once for all, diftin& vi¬ fion to different eyes, and through different eye-glaffes, mult be procured by a gentle motion of the little tubes that contain thefe glaffes. Thefe tubes muft be made in the ufual form of thofe that belong to Sir Ifaac Newton’s refle&ing telefcope, (fee .Telescope), having a fmall-hole in the middle of eacn plate, at the ends of the tube, fituated exa&ly in each locus of the 6 gk&i / Hiftory. O ^ ^ glaft : the life of thefe holes and plates is to limit the vifible area, and hinder any ftragglhg rays from enter¬ ing the eye. To the tube of the eye-glafs is failened the arm g, on which the adjafting fcrew turns. A fimilar arm u is attached to the fixed tube X, in which the neck of the fcrew turns ; and by turning the but¬ ton v, the eye tube is moved farther from or nearer to the objedt, by which means different forts of eyes ob¬ tain difiindl vifion. The rays which flow from the obje& dire&ly thro’ the hole in the concave fpeculum and through the eye-glafs, by mixing with the refle&ed rays, would dilute the image on the retina, and therefore muff be intercepted. This is done by a very fimple contri¬ vance. The little hole in the convex fpeculum is ground conical as in the figure ; and a conical folid P, of which the bafe is larger than the orifice in the back of the convex fpeculum, fupported on the {lender pil¬ lar PQ, is fo placed as to intercept all the direfi rays from tfie eyc-glafs. All the tubes are ftrongfy black¬ ed on their infides, and fo is the conical folid, to hin¬ der all rtfk&ion of rays from thefe obje&s upon the convex fpeculum. The little bafe, too, of the folid Ihould be made concave, that whatever light it may {fill refleft, may he thrown back upon the objed ; and its back-fide being conical and blacked all over, will either abforb or laterally difperfe any ftraggling rays which the concave fpeculum may fcatter upon it, and fo prevent their coining to the eye glafs. NotwithHanding the interpolition of this conical folid, yet when the eye-glafs is taken out, diftant ob- je&s may be diftin&ly feen through the microfcope, by rays refle&ed from the metals, and diverging upon the eye from an image behind the convex fpeculum, 13ut this mixture of foreign rays with thofe of the ob- jed, which is common to all kinds of microfcopes in viewing tranfparent objeds, is ufually prevented by placing before the objjed a thick double convex lens L, to colled the fky-light exadly upon the objed. This lens fhould be juft fo broad as to fubtend the oppofite angle to that which the concave fpeculum fubteads at the objed. The annular frame of the lens muft: be very narrow, and conneded to the microfcope by two or three flender wires or blades, whofe planes produced may pafs through the objed, and intercept from it as little fky-light as poflible. This is not the place for explaining the principles of this microfcope, or demoftrating its fuperiority over moft others ; nor are fuch explanation and demonftra- tion neceffary. Its excellence, as well as the princi¬ ples upon which it is conftruded, will be perceived by the reader, w'hen he has made himfelf mafter of the laws of refradion and refledion as laid down in the enfuingpart of this article. In 1738 or 1739, Lieberkuhn made two capi- Sohr mi- improvements in microfcopes, by the invention of crofeope, the folar microfcope^ and the micro/cops for opaque objetls. and rhat fo; Wfie„ he was in England in the winter of 1739, he opaque °b- an apparatus of his own making, for each of thefe purpofes, to feveral gentlemen of the Royal So¬ ciety, as well as to feme opticians, particularly Mr Cuff in Eleet-flreet, who took great pains to improve them. The microfcope for opaque objeds remedies the in¬ convenience of having the dark fide of an objed next ICS. 277 the eye. For by means of a concave fpeculum of fil- ver, highly polifhed, in the centre of which a magni¬ fying lens is placed, the objed is fo ftrongly illumi¬ nated that it may be examined with all imaginable eafe and pleafure. A convenient apparatus of this kind, with four different fpeculums and magnifiers of different powers, was brought to perfedion by Mr Cuff. M. Lieberkuhn made confiderable improvements in his folar microfcope, particularly in adapting it to the view of opaque objeds; but in what manner this end was effeded, M. vEpinus, who was highly entertained with the performance, and who mentions the fad, was not able to recoiled ; and the death of the ingenious inventor prevented his publiihing any account of it himfelf. M. iEpinus invites thofe perfons who came into the poffeffion of M. Lieberkuhifs apparatus to publiih an account of this inftrument ; but it doth not appear that his method was ever publiftied. This improvement of M. Lieberkuhn’s induced M» iEpinus himfelf to attend to the fubjed ; and by this means he produced a very valuable improvement in this inftrument. For by throwing the light upon the fore- fide of any objed by means of a mirror, before it is tranfmitted through the objed-lens, all kmds of objeds are equally well reprefented by it. v II(j M. Euler propofed a fcheme to introduce vifion byRefledted refleded light into the magic lantern and folar micro-lit-ht intro- fcope, by which many inconveniences to which thofed^^.'^® inftruments are fubjed might be avoided. For this j-cope lan^ purpofe, he fays, that nothing is necefiary but a large magic laa-* concave mirror, perforated as for a telefeope; and that tern, the light be fo fituated, that none of it may pafs di¬ rectly through the perforation, fo as to fall on the images of the objeds upon the fereen. He propofes to have four different machines, for objeds of different fixes ; the firft for thofe of fix feet long, the fecorfd for thofe of one foot, the third for thofe of two inches, and the fourth for thofe of two lines ; but it is need- lefs to be particular in the defeription of thefe, as more- perfed inftruments are deferibed under the article M ICRORCOPE. Several improvements were made in the apparatus to the folar microfcope, as adapted to view opaque objeds, by M. Zeiher, who made one conftrudion for the larger kind of objeds, and another for the fmall ones. wj Mr Martin having conftruded a folar microfeope of Mr Mar- a larger fize than common, for his own ufe, the illu-tul s irn' minating lens being 44- inches in diameter, and all ^[a^Molar other parts of the inftrument in proportion, found, that microfcops» by the help of an additional part, which be does not deferibe, he could fee even opaque objeds very well. If he had made the lens any larger, he was aware that the heat produced at the focus would have been too great for the generality of objeds to bear. The expence ®f this inftrument, he fays, does not much exceed the price of the common folar microfcope. The fmaileft globules, and confequently the greateft DrTomd» magnifiers, for microfcopes, that have yet been execu-enraordi- ted, were made by T. Di Torre of Naples, who, ia narryi 1765, fent four of them to the Royal Society. The cnLope! ^ largeft of them was only two Paris points in diameter, and it was faid to magnify the diameter of an objed 640 times. The feccnd was the fize of one Paris point,. aci 27S OPT and die third was no more than half of a pari ceive their impulfes), excite in our minds the idea of light. And as they differ in fubftance, denfity, velo¬ city, or magnitude, they produce in us the ideas of different colours; as will be explained in its proper place. That the particles which conftltute light are ex¬ ceedingly fmall, appears from hence, viz. that if a hole be made through a piece of paper with a needle, rays of light from every objeft on the farther fide of it are capable of palling through it at once without the lea ft: confufion ; for any one of thofe objefts may as clearly be feen through it, as if no rays paffed through it from any of the reft. Further, if a candle is lighted, and there be no obftacle in the way to obftruft the pro- grefg Parti. OPT Rtfraiflion. grefs of its rays, it will fill all the fpace within two w—V—" miles of it every way with luminous particles, before it has lolt the lead fenlible part of its fubftance there¬ by. That thefe particles proceed from every point of the flirface of a vilible body, and in all directions, is clear from hence, viz. becaufe wherever a fpedtator is pla¬ ced with regard to the body, every point of that part of the furface which is turned towards him is vifible to him. That they proceed from the body in right lines, we are affured, becaufe juft fo many and no more will be intercepted in their pafl’age to any place by an interpofed objeCt, as that objeCt ought to intercept, fuppofing them to come in fuch lines. The velocity with which they proceed from the fur- face of the vifible body is no lefs furprifing than their minutenefs: the method whereby philofophers eftimate their fwiftnefs, is by obfervations made on the eclipfes of Jupiter’s fatcllites; which eclipfes to us appear about feven minutes fooner than they ought to do by calcu¬ lation, when the earth is placed between the fun and him, that is, when we are neareft to him; and as much later, when the fun is between him and us, at which time we are fartheft from him; from whence it is con¬ cluded, that they require about feven minutes to pafs over a fpace equal to the diftance between the fun and us, which is about 95,000,000 of miles. A ftream of thefe particles iffuing from the furface of a vifible body in one and the fame dire&ion, is call¬ ed a ray of light. As rays proceed from a vifible body in all direftions, they necefiarily become thinner and thinner, continu¬ ally fpreading themfelves as they pafs along into a lar¬ ger fpace, and that in proportion to thefquares of their diftances from the body ; that is, at the diftance of two fpaces, they are four times thinner chan they are at one; at the diftance of three fpaces, nine times thin¬ ner, and fo on : the reafon of which is, becaufe they fpread themfelves in a twofold manner, viz. upwards and downwards, as well as fidewife. The particles of light are fubjedft to the laws of at¬ traction of cohefion, like other fmall bodies; for if a ray of light be made to pafs by the edge of a knife, it. will be diverted from its natural courfe, and be in- fle&ed towards the edge of the knife. The like in¬ flection happens to a ray when it enters obliquely in¬ to a denfer or rarer fubftance than that in which it was before, in which cafe it is faid to be refracted; the laws of which refiaCtion are the fubjtCl of the following feClion. Sect. II. Of Refraftion. Refradtion Light, when proceeding from a luminous body, defined. without being reflected from any opaque fubflance, or infleCted by paffing very near one, is invariably found to proceed in ftraight lines, without the leaft deviation. But if it happens to pafs obliquely from one medium to another, it always leaves the direction it had before, and affumes a new one ; and this change of courfe is called its refradion. After having taken this new di¬ rection, it then proceeds invariably in a ftraight line till it meets with a different medium, when it is again turned out of its courfe. It muft be obferved, how¬ ever, that though by this means we may caufe the rays ICS. 279 of light make any number of angles in their courfe, it Oaufe of is impoffible for us to make them dtferibe a curve, ex-W‘e^ra<^'on; cept in one Angle cafe, namely, where they pafs through ” v ”T a medium, the denfity of which uniformly either in- creafes or decreafes. This is the cafe with the light ofin what the celeftial bodies, which pafles dowrfwards through cafe the our atmofphere, and likewife with that which is re fleCted upwards through it by terreftrial objeCls. In rc|.;i,e both thefe cafes, it deferibes a curve of the hyperbolic curve, kind ; but at all other times it proceeds in ftraight lines, or in what may be taken for ftraight lines with¬ out any fenfible error. § I. The caufe of RefraBion, and the lava by which it is performed. The phenomena of refraCtion are explained by an Phenomena attractive power in the medium through which lightfi^ rejfac*^ paffes, in the following manner : All bodies being en-^y an°at> dowed with an attractive force, which is extended tora&ive fome diftance beyond their furfaces ; when a ray of power in light pafies out of a rarer into a denfer medium (if thist^eine^ latter has a greater attractive force than the former, asum‘ is commonly the c.rfe), the ray, juft before its entrance, will begin to be attracted towards the denfer medium; and this attraction will continue to aCt upon it, till fome time after it has entered the medium; and there¬ fore, if a ray approaches a denfer medium in a direc** tion perpendicular to its furface, its velocity will be continually accelerated during its paft’age through the fpace in which that attraction exerts itielf; and there¬ fore, after it has palfed that fpace, it will move on, till it arrives at the oppofite fide of the medium, withe a greater degree of velocity than it had before it en¬ tered. So that in this cafe its velocity only will be al¬ tered. Whereas, if a ray enters a denfer ntedium obliquely, it will not only have its velocity augment¬ ed thereby, but its direction will become lefs oblique to the furface. Juft as when a ftone is thrown down¬ wards obliquely from a precipice, it falls to the furface of the ground in a direction nearer to a perpendicular one, than that with which it was thrown from the - hand. From hence we fee a ray of light, in palling, out of a rarer into a denfer medium, is refraCted to¬ wards the perpendicular; that is, fuppofing a line drawn perpendicularly to the furface of the medium, through the point where the ray enters, and extended both ways, the ray in palling through the furface is refraCted or bent towards the perpendicular line ; or, which is the lame thing, the line which it deferibes by its motion after it has palfed through the furface, .. makes a Itfs angle with the perpendicular, than the line it deferibed before. All which may be illuftrated in the following manner. Let us fuppofe fir ft, that the ray palfes out of a va- p]it, cuum into the denfer medium A13CD (figi 3.), and CCCLIVi that the attractive force of each particle in the medium is extended from its refpeCtive centre to a diftance equal to that which is between the lines AB and EF, or AB and GH ; and let KL be the path deferibed by a- ray of light ii> its progrefs towards the denfer medium. This ray, when it arrives at L, will enter the attractive forces of thofe particles which lie in AB the furface of the denfer medium, and will therefore ceafe to proceed any longer in the right line KLM, but will* be diverted from its courfe by being attracted toward* $he c c8o OPTICS. Part X, Caufe of the line AB, and will begin to defcribe the curve LN, JRefradion. pafling through the furface A13 in fome new direftion, as OQj thereby making a lefs angle with a line, as PR, drawn perpendicularly through the point h, than it would have done had it proceeded in its firil direc¬ tion KLM. Farther : Whereas, we have fuppofed the attraftive force of each particle to be extended through a fpace equal to the diftance between AB and EF, it is evi¬ dent that the ray, after it has entered the furface, will Itill be attracted downwards, till it has arrived at the line EF; for, till that time, there will not be fo many particles above it which will attradl it upwards, as be¬ low, that will attract it downwards. So that after it 'has entered the furfacc at N, in the diredlion OQ^, it will not proceed in that dire&ion, but will continue to defcribe a curve, as NB; after which it will proceed fhaigbt on towards the oppofite fide of the medium, being attrafted equally every way; and therefore will at lad proceed in the dire&ion XST, {till nearer the perpendicular PR than before. Now if we fuppofe ABZ Y not to be a vacuum, but a rarer medium than the other, the cafe will Hill be the fame ; but the i ay will not he fo much refra&ed from -its reftilineal courfe, becaufe the attra&ion of the particles of the upper medium being in a contrary di- reftion to that of the attra&ion of thofe in the lower one, the attra&ion of the denfer medium will in fome meafure be deftroyed by that of the rarer. On the contrary, when a ray paffes out of a denfer into a rarer medium, if its direction be perpendicular to the furface of the medium, it will only lofe fome- what of its velocity, in palling through the fpaces of attra&ion of that medium (that is, the fpace wherein it is attracted more one way than it is another). If its diredtion be oblique, it will continually recede from the perpendicular during its pafiage, and by that .means have its obliquity increafed, juft as a ft one thrown up obliquely from the furface of the earth in- creafes its obliquity all the time it rifes. Thus, fup- pofing the ray TS palling out of the denfer medium ABED into the rarer ABZY, when it arrives at S it will begin to be attra&ed downwards, and fo will de¬ fcribe the curve SNL, and then proceed in the right line LK; making a larger angle with the perpendicular PR, than the line TSX in which it proceeded during its paffagc through the other medium. We may here make a general obfervation on the forces which produce this deviation of the rays of light from their original path. They arife from the joint aftion of all the particles of the body which are fufficiently near the particle of light; that is, whofe diftance from it is not greater than the line AE or GA; and therefore the whole force which adts on a particle in its different fituations between the planes GH and EF, follows a very different law from the force exerted by one particle of the medium. The fpace through which the attradfion ofcohefion of the panicles of matter is extended is fo very fmall, that in confidering the progrefs of a ray of light out of one medium into another, the curvature it deferibes jn paffing through the Ipace of attradlion is generally ncgledted ; and its path is fuppofed to be bent, or, in the ufual terms, the ray is fuppofed to be refradled only in the point where it enters the denfer medium. 247. Now the line which a ray deferibes before it enters Caufe of a denfer or a rarer medium, is called the incident ray . Refraction. that which it deferibes after it has entered, is the re- ^ ' "J fraided ray. The angle comprehended between the incident ray and the perpendicular, is the angle of incidence; and that between the refradled ray and the perpendicular, is the angle of refraflhn. There is a certain and immutable law or rule, by which refradlion is always performed; and that is this: Whatever inclination a ray of light has to the furface of any medium before it enters it, the degree of ie- fradtion will always be fuch, that the proportion be¬ tween the fine of the angle of its incidence, and that of the angle of its refradlion, will always be the fame in that medium. pjate To illuftrate this: Let us fuppofe ABCD (fig. 4.) CCCLIV* to reprefent a rarer, and ABEF a denfer medium: let GH be a ray of light palling through the firft and en¬ tering the fecond at H, and let HI be the refradled ray: then fuppofing the perpendicular PR drawn thro’ the point H, on the centre H, and with any radius, defcribe the circle APBR ; and from G and I, where the incident and.refradled rays cut the circle, let fall the lines GK arid XL perpendicularly upon the line PR; the former of thefe will be the fine of the angle of incidence, the latter of refradlion. Now if in this cafe the ray GH is fo refradled at H, that GK is double or triple, &c. of IL, then, whatever other in¬ clination the ray GH might have had, the fine of its angle of incidence would have been double or triple, &c. to that of its angle of refradlion. For inftance, had the ray^paffed in the line MH before refradlion, it would have puffed in fome line as HN afterwards, fo fituated that MO ftiould have been double or triple, &c. of NQ^ When a ray pafles out of a vacuum into air, the fine of the angle of incidence is found to be to that of re¬ fradlion as 100036 to 100000. When it pafies out of air into water, as about 4 to 3. When out of ainjnto glafs, as about 17 to it. When out of air into a diamond, as about 5 to 2. This relation of the fine of the angle of incidence to that of refradlion, which is a propofition of the moft extenlive ufe in explaining the optical phenome¬ na on phyfical or mechanical principles, may be de- monftrated in the following eafy and familiar man¬ ner. Lemma I. The augmentations or diminutions of the fquares of the velocities produced by the uniform adlion of accelerating or retarding forces, are propor¬ tional to the forces, and to the fpaces along which they adl, jointly, or are proportional to the produdta of the forces multiplied by the fpaces. Let two bodies be uniformly accelerated from a ftate of reft in the points A <3, along the fpaces AB, ab, fig. 5. by the accelerating forces Fjf, and let AC, a c, be fpaces deferibed in equal times ; it is evident, from what has been faid under the articles Gravit* and Acceleration, that becaufe thefe fpaces are deferibed with motions uniformly accelerated, AC and ac are refpedtively the halves of the ipaces which would he uniformly deferibed during the fame time with the velocities acquired at C and r, and are therefore I -art I. OPT Caufeof therefore meafures of thefe velocities. And as thefe iiefrai3i|in* yclocltiee are uniformly acquired in equal times, they v are meafures of the accelerating forces. Therefore AC . ac~Y :/. Alfo, from the nature of uniformly accelerated motion, the fpaces are proportional to the fquares of the acquired velocities. fherefore, (uting the fymbols a/* C, a/jO &c- to exprefs. the fquares of the velocities at C c, &c.) we have V/1 B : C=e AB : AC a/2 C : i/'t ~ AC1 : tre* a/2 £ : \/1 b — ac : ob Therefore, by equality of compound ratios a/2 B : a/2 b— ABXAC : = ABxF : alXf. And in like manner : v^2 £/= ADxb : adYf; and v/1 B—a^2 D : \/2 d=VDXF‘-bd'Xf, O. E. D. r . , Coral. If the forces are as the fpaces inverfdy, the augmentations or diminutions of the fquares of the ve¬ locities are equal. Remark. If DB, db, be taken extremely fmall, the produds BDXF and b dYf may be called the momentary aftions of the forces, or the momentary increments of the fquares of the velocities.^ It is u- fually exprefled, by the writers on the higher me¬ chanics, by the fymbol/r, or fds, where / means the accelerating force, and s or ds means the indefinitely fmall fpace along which it is uniformly exerted. -And the propofition is expreffed by the fluxionary equa¬ tion f s~v v, becaufe v v is half the increment of -a > as is well known. . r i. r n- Plate I.emmai. (being the 39th propofition of the 11 rIt cu- The mJtim Jar to the refraAing furface, it is accelerated ; and it°f light ac- is retarded when it is refraAed from the perpendicular celerate-1 In the firft cafe, therefore, it muft be confidered ty having been aAed on by forces confpiring (in part at- * leaft) with its motion, and viceverfa. Therefore, be¬ caufe we fee that it is always refraAed towards the perpendicular, when palling from a void into any tranf¬ parent fubftance, we muft conclude that it is, on the whoL, attraAed by that fubftance. We muft draw the fame conclufion from obferving, that it is refraAed from the perpendicular in its paflage out of any tranf¬ parent fubftance whatever into a void. It has been attraAed backwards by that fubftance. I his acceleration of light in refraAion is contrary to the opinion of thofe philofophers who maintain, t at illumination is produced by the undulation of an elaftic medium. Euler attempts to prove, by mecha¬ nical laws, that the velocities of the incident and re¬ fraAed light are proportional to the fines of incidence and refraAion, while our principles make them in this. 8 ratio. — ,rtT OPT »(' rat!o inverfely. T5ofcoviclt propofed a fine experiment ifridion for deciding this queilion. The aberration of the hxed ftarsarifes from the combination of the motion o liaht with the motion of the tclefcope by which it is obferved. Therefore this aberration ihou d be greater or lefs when obferved by means of a telefcope tide with water, according as light moves flower or fwifter through water than through air. He was mifWen in the manner in which the conclufion (houlcl be arawn from the obfervation made in the form prefenbed by him : and the experiment has not yet been made m a convincing manner ; becaufe no fluid has been found of fufficienc tranfparency to admit of the neceflary . magnifying power. It is an experiment o. the great- eft importance to optical fcience. . 2. If the light be moving within the tranfparent Cub fiance, and if its velocity (eftimated in a dire&ion perpendicular to the furface) do not exceed the fpeci- 5k velocity of that fubftance, it will not emerge from it, but will be reflefted backwards in an angle equal to that of Its incidence. For it mufi be obferved, that in the figure of laft propofition, the excefs of the fquare of EF above the fquare of EL, is the fame with the excefs of the fquare of KF above the fquare of KL. Therefore the fquare of the fpecific velocity is equal to the augmentation or diminution of the fquare of the perpendicular velocity. If therefore the rrrMV mit1"1 perpendicular velocity FK (% 80 Je.P^eclfe J CCCL1V. ^ ^ the fpecific velocity, the light will juft reach the farther fide of the attraaing ttratum, as at r>, where its perpendicular velocity will be completely ex- tinguifhed, and its motion will be in the direkionb I. But it is here under the influence of forces tending towards the plane KR, and its motion will therefore be flill incurvated towards it; and it will oeicnbe a curve BD equal and fimilar to EB, and finally emerge back from the refrafting ftratum into the tranfparent fubftance in an angle RD A equal to KEF If the direaion of the light be ftdl more oblique, to that its perpendicular velocity is lefs than the fpecific Velocity, it will not reach the plane S I, but be re- flefted as foon as it has penetrated fo far that the fpecific velocity of the part penetrated (eftimated by the compounding part of the area of forces) is equal to its perpendicular velocity. Ihus the ray E wi deferibe the path EJDa penetrating to Id, fo that the correfponding area of forces is equal to the fquare of fk, its perpendicular velocity. The extreme brilliancy of dew drops and of jewels had often excited the attention of philofophers, and it always appeared a difficulty how light was refleded at all from the pofterior furface of tranfparent bodies. It afforded Sir Ifaac Newton his flrongeft argument again ft the ufual theory of refledion, viz. that it was produced by impad on folid elaftic matter. He was the firft who took notice of the totalTcfledion in great obliquities; and very properly afked how it can lie laid that there is any impad in this cafe, or that the re- fkding impad fhould ceafe at a particular obli- rt8 quity ? ... Rays at a It mu ft be acknowledged that it is a very curious cert tin ob- circumftance, that a body which is perfectly tranfpa- liquity are ceafe t0 be fo at a certain obliquity ; that SaX a great obliquity fltould not hinder light from paffing tranfparent from a void into a piece of gEfs j tm. that the fame vbftantts. ICS. 383 obliquity fhould prevent it from paffing from the glafs Caufe of into a void. The fineft experiment for illultrating the Kara~tK,n’. fad is, to take two pieces of mirror-glafs, not filvered, and put them together with a piece of paper between them, forming a narrow margin all round to keep them apart. Plunge this apparatus into water. When it is held nearly parallel to the furface of the water, every thing at the bottom of the veffel will be feen clearly through the glaffcs ; but when they are turn. ed fo as to he inclined about 50 degrees, they will in- tercept the light as much as if they were plates of iron. It will be proper to foak the paper in varnifh, to pre¬ vent water from getting between the glaffes. 119 What is called the brilliant cut in diamonds, is fuch The bril- a difpolition of the pofterior facets of the diamond, 11 ant cut ia that the light is made to fall upon them fo obliquely that none of it can go through, but all is refleded. Je{k(> To produce this effed in the greateit poffible degree, ;ioa, is a matter of calculation, and merits the attention of the lapidary. When diamonds are too thin to admit of this form, they are cut in what is called the rofe- fafhion. This has a plain back, and the facets are all on the front, and fo difpofed as to refract the rays in¬ to Efficient obliquities, to he ftrongly refleded from the pofterior plane. Doublets are made by cutting one thin diamond rofe-faftiion, and another fimilar one is put behind it, with their plane furfaces joined. Or, more frequently, the outfide diamond has the anterior facets of the brilliant, and the inner has the form of the inner part of a brilliant. If they be joined with very pure and ftrongly refradmg varnifh, little light is refleded from the feparating plane, and their bril¬ liancy is very confiderable, though . ftill inferior to a true and deep brilliant. If no varnifti oe ufed, much of the light is refleded from the flat fide, and the ef- fsd of the pofterior facets is much diminiihed. But doublets might be conftruded, by making the touch¬ ing furfaces of a fpherical form (ot which the curvature fhould have a due proportion to the fize of the ilone), that would produce an effed nearly equal to that of the mo ft perfect brilliant. ^ 3. Since the change made on the fquare of the velo- Refrafti0ft city of the incident hyht is a conitant quantity, itdimmifhes follows, that the refraction win diminifh a* the velo-as the inci- city ot the incident light increafes For if Lr (n ^ i^eLiesL fig. 7. be a conftant quantity, and EE be increafed, it is evident that the ratio of E , or its equal EF, to EL will be diminiihed, and the angle EEF, which conftitutes the refradien, will be dtminiihed. The phyfical caufe of tins is eaiily feen : When the velocity of the incident light is increafed, it employs lefs time in paffing through v the refracting ftratum or fpace be¬ tween the planes S i and KR, and is therefore lefs in¬ fluenced by the refracting forces. A iimilar effed would follow if the trafiiparent body were moving with great velocity towards the luminous body. Some naturalifts have accounted for the different refrangibility of the differently coloured rays, by fup- pofing that the red rays move v.ith the greateft rapi¬ dity, and they have determined the difference of ori¬ ginal velocity which would produce the obferved dif¬ ference of refradion. But this difference would be obferved in the eclipfes of Jupiter's fatellites. They Ihould be ruddy at their emerfions, and be lome fe- conds before they attain their pure whitenefs; and N n Z theF 284. OPT Caufe of they fliould become blailb immediately before they Rciradtipn.yan^ ;n immerflon9> This is not obferved. Bendes, the difference in refrangibility is much greater in flint- glafs than in crown-glafs, and this would require a proportion liy greater difference in the original velo¬ cities. This explanation therefore mull be given 13* The refrac :ion of a ftar greater in the even¬ ing than in the morn- ing. up. 13 » All light fubjeit to the fame kws. It fliould follow, that the refradtion of a ftar which is in our meridian at fix o'clock in the evening Ihould be greater than that of a ftar which comes on the me¬ ridian at fix in the morning; becaufe we are moving . away from the firft, and approaching to the laft. But the difference is but of the whole, and cannot be obierved with fufficient accuracy in any way yet prac- tifed. A form of obfervation has been propofed by Dr Blair profeffor of practical aftronomy in the uni- verlity of Edinburgh, which promifes a very fenfible difference of refraction. It is alfo to be expedted, that a difference will be obferved in the refradtion of the light from the eaft and v/eftern ends of Saturn's ring. Its diameter is about 26 times that of the earth, and it revolves in roll. 32'; fo that the velocity of its edge is about -ros-cnr of the velocity of the fun’s light. If therefore the light be refledted from it according to the laws of perfedl elafticity, or in the manner here explained, that which comes to us from the weftern extremity will move more fiowly than that which comes from the eaftern extremity in the proportion of 2joo to 2501. And if Saturn can be feen cliftindlly after a refradtion of 30° through a prifm, the diame¬ ter of the ring will be encreafed one half in one pofi- tion of the telefcope, and will be as much diminifhed by turning the telefcope half round its axis ; and an intermediate poiition will exhibit the ring of a di- ftorted Ihape. This experiment is one of the mo ft in- terefting to optical fcience, as its refult will be a fe- vere touchftone of the theories which have been at¬ tempted for explaining tKe phenomena on mechanical principles. If the tad of a comet be impelled by the rays of the fun, as is with great probability fuppofed by Eu¬ ler and others, the light by which its extreme parts are feen by us muff have its velocity greatly dimi- niftted, being reftedled by particles which are moving away from the fun with immenfe rapidity. This may perhaps be difcovered by its greater aberration and re- frangibility. As common day-light is nothing but tbe fun’s light refledted from terreftrial bodies, it is reafonable to ex¬ pert that it will fuffer the fame refradlion. But no¬ thing but obfervation could affure us that this would be the cafe with the light of the ftars; and it is rather furprifing that the velocity of their light is the fame with that of the fun’s light. It is a circumftance of connexion between the folar fyftem and the reft of the univerfe. It was as link to be looked for on the light of terreftrial luminaries. If light be conceived as fmall particles of matter emitted from bodies by the action of accelerating forces of any kind, the vaft diverfity which we obferve in the eonftitution of fublunary bo¬ dies (horild make us expedt differences in this particu¬ lar. Yet it is found, that the light of a candle, of a gloworm, &c fullers the fame refradtion, and confifts of the fame colours. Phis circumltance is adduced as an argument againft the theory of enulfton. It is I C S, parj. thought more probable that this famenefs of velocity Caufe ef is owing to the nature of the medium, which deter- JUfraftum, mines the frequency of its undulations and the velocity ■“~v— of their propagation. 4. When two tranfparent bodies are contiguous, the LaWof3 light in its paffage out of the one into the other will fradfion be refradted towards or fr om the perpendicular, accord- when light ing as the refradfing forces of the fecond are greater P^es out o* kfs than thofe of the firft, or rather according as p^m^K* the area exprefling the fquare of the fpecific velocity is dy intoa- grcater or lefs. And as the difference of thefe areas nother cnn. is a determined quantity, the difference between the p^uous t(> velocity in the medium of incidence and the velocity lt' in the medium of refradlion, will alfo be a determined quantity. Therefore the fine of the angle of incidence will be in a conftant ratio to the fine of the angle of refradlion ; and this ratio will be compounded of the ratio of the fine of incidence in the firft medium to the fine of refradlion in a void; and the ratio of the fine of incidence in a void to the fine of refradlion in the fecond medium. If therefore a ray of light, mo¬ ving through a void in any diredlion, fhallpafs through any number of media bounded by parallel planes, ita diredlion in the laft medium will be the fame as if it. had come into it from a void. 5. it alfo follows from thefe propofitions, that if the obliquity of incidence on the pofterior furface of a tranfparent body be fuch, that the light fhould be. refledled back again, the placing a mafs of the fame or of another medium in contadl with this furface, will caufe it to be tranfmitted, and this the more com¬ pletely, as the added medium is more denfe or more refraftive ; and the refledtion from the feparating furface will be the more vivid in proportion as the po¬ fterior fubftance is lefs denfe or of a fmaller refradlive power. It is not even neccffary that the other body be in contadl; it is enough if it be fo near that thole parts of the refradling ftrata which are beyond the bodies interfere with or coincide with each other. All thefe confequences are agreeable to experience. The brilliant refledlion from a dew-drop ceafes when it touches the leaf on which it refts : The brilliancy of a diamond is greatly damaged by moifture getting behind it: The opacity of the combined mirror plates* mentioned in the fecond corollary, is removed by let¬ ting water get between them : A piece of glafs is diftindlly or clearly feen in air, more faintly when im- merfed in water, ftill more faintly amidil oil of olives, and it is hardly perceived in fpirits of turpentine. Thefe phenomena are incompatible with the notion that refledlion is occafioned by impadl on folid matter, whether of th<« tranfparent body, or of any aether or other fancied fluid behind it; and their perfect coin¬ cidence with the legitimate confequences of the affir¬ med principles, is a ftrwng argument in favour of the truth of thofe principles 154' It is worth while to mention here a fadt taken no- objeo tice of by Mr Beguelin, and propofed as a great dif- ^,on t0 the ficulty in the Newtonian theory of refraction. In ° order to get the greatell poflible refradlion, and the relradtjou. fimpleft meafure of the re/radting power at the ante¬ rior furface of any tranfparent fubftance, Sir Ifaac Newton enjoins us to employ a ray of light falling on the furface quam obliqmjftme. But Mr Beguelin found, that when the obliquity of incidence in glafs was about Part f. O Caufe of Re'radtion *35 Shown to bo the ne- veffary con fequence of that tion of it. no light was refra61etl, but that it was wholly refle&ed. He alfo obferved, that when he gradually increafed the obliquity of incidence on the pofterior furface of the glafs, the light which emerged laft of all did not fkim along the furface, making an angle of 90° with the perpendicular, as it fhouid do by the Newtonian theory, but made an angle of more than ten minutes with the poflerior furface. Alfo, when he began with very great obliquities, fo that all the light was reflefted back into the glafs, and gradually dimi¬ nished the obliquity of incidence, the firfl ray of light which emerged did not Heim along the furface, but was raifed about ic or 15 minutes. But all thefe phenomena are neceflary confequences of our principles, combined with what obfervation teaches us concerning the forces which bodies exert Ulic on t^ie r;,ys of light. It is evident, from the experi- theory, and of Crnmaldi and Newton, that light is both at- * f courfe a trailed and repelled by foil'd bodies. Newton’s fa- confirma- gacious analyfis of thefe experiments difeovered feve- ral alternations of aAual infleftion and defleftion ; and he gives us the precife didance from the body when fome of thefe attractions end and repuHion commences; and the moft remote action to be obferved in his ex¬ periments is repulfion. Let us fuppofe this to be the cafe, although it be not abfolutely necefTary. Let ns fnppofe that the forces are reprefented by the ordi¬ nates of a curve abnpc (tez fig. 7.) which crolfes the CCCL1V. abfeifla in b. Draw bo parallel to the refracting fur¬ face. Wiien the obliquity of incidence of the ray AB has become fo great, that its path in the glafs, or in the refracting Itiatiim, does not cut, but only touches the line 0 b> it can penetrate no further, but is to¬ tally reflected ; and this muft happen in all greater obliquities. On the other hand, when the ray LE, moving within the glafs, has but a very fmall perpen¬ dicular velocity, it will penetrate the refraAing ftra- tum no further than till this perpendicular velocity is extinguilhed, and its path becomes parallel to the fur¬ face, and it will be refleAed back. As the perpendi¬ cular velocity increafes by diminifhing the obliquity of incidence, it will penetrate farther; and the laft refleAion will happen when it penetrates fo far that its path touches the line o b. Now dimrnilh the oblrquity by a fingle iecond ; the light will get over the line c b, will deferibe an arch b r/B concave upwards, and will emerge m a direAion BA, which does not fkim the furface, hut is fenfibly raifed above it. And thus the fa As obferved by M. Beguelin, inftead of being an objeAion again!! this theory, afford an argument in its favour. 7. Thofe philofophers who maintain the theory of Plate I c s. 28 136 tj Euler s .... . —- ****.*,,, : theory of undulation,are under the neceffity of conneAing the di- undulation fperfive powers of bodies with their mean refraAive | contrary to pOWers. Mr Euler has attempted to deduce a necef- fary difference in the velocity of the rays of different colours from the different frequency of the undula¬ tions, which he affigns as the caufe of their different colorific powers. His reafoning on this fubjeA is of the moft delicate nature, and unintelligible to fuch as are not completely mafter of the infinitefimal calculug of partial differences, and is unfatisfadory to fuch as are able to go through its intricacies. It is contra. dfAed by faA. He fays, and indeed to be confiftent he muft fay it, that mufical founds which difler great- ly m acutenefs are propagated through the air with Caufe of different velocities; but one of the fmalleft bells in Rtfla‘5lion' the chimes of St Giles’s church in Edinburgh was v ftruck againft the rim of the very deep-toned bell on which the hours are ftruck. When the found was liftened to by a nice obferver at the diftance of more than two miles, no interval whatever could be obfer¬ ved. A fimilar experiment was exhibited to Mr Eu¬ ler himfelf, by means of a curious mufical inftrument (if it can be fo called) ufed at St Peterfburgh, and which may be heard at three or four miles diftance. But the experiment with the bells is unexceptionable, as the two founds were produced in the very fame inftant.. This connection between the refrangibility in general and the velocity muft be admitted, in its full extent, in every attempt to explain refraction by undulation; and Euler was forced by it to adopt a certain confequence which made a neceflary connec¬ tion between the mean refraAion and the difperiion of heterogeneous rays. Confident of his analyfis, he gave a deaf ear to all that was told him of Mr Doi- lond’s improvements on telefcopes, and afierted, that they could not be fuch as were related ; for an in- creafe of mean refraAion muft always be accompanied with a determined increafe of difperfion. Newton had faid the fame thing, being milled by a limited view.of his own principles; but the difperfion alfigned by him was different from that affigned by Euler. The dif- pute between Euler and Dollond was confined to the decifion of this queftion only ; and when fome glaffes- made by a German chemift at St Peterfburgh con¬ vinced Euler that his determination was erroneous, he had not the candour to give up the principle which had forced him to this determination of the difper¬ fion, but immediately introduced a new theory of the achromatic telefcopes of Dollond ; a theory which took the artifts out of the track marked out by ma¬ thematicians, and in which they had made confider- a-ble advances, and led them into another path, pro- pofing maxims’oi conftruAion hitherto untried, and inconfiftent with real improvements which they had 137- already made. The leading principle in this theory And mir» is to arrange the different ultimate images of a point leadsiil'tlil8*- which arife either from the errors of a fpherical figure or different refrangibility, in a ftraight line palling through the centre of the eye. The theory itfelf is fpecious; and it requires great mathematical flcill to accomphfh this point, and hardly lefs to decide on the propriety of the conftruAion which it recom- mends. It is therefore but little known. But that it is a falfe theory, is evident from one fimple confidera- tion. In the moft indiftinA vifion ariiing from the worft conftruAion, this reAiiineal arrangement of the images obtains completely in that pencil whiefi is fi- tuated in the axis, and yet the vifion is indiftinA- But, what is to our prefent purpofe, this new theory is purely mathematical^ fuitiug any obferved difper- five power, and has no conneAion with the phyfical theory of undulations, or indeed with any mechanical principles whatever. But, by admitting any difper- five power, whatever may be the mean refraAion all the phyfical doArines in his Nova Theoria Lucis et Co/orum are overlooked, and therefore never once men¬ tioned, although the effeAs of Mr Zeiher’s glafs are taken notice of as inconllftent with that mechanica propo-^ 236 0 Caufe of proportion of Newton’s winch oceafioned the whole Re fra# ion. ^jfpUte between Euler and Dollond. w—••pbey are indeed inconfiftent with the uniyerfality of that propofition. Newton advances it in his optics inerely as a mathematical proportion highly pro¬ bable, but fays that it will be corrected if hejhalljind it falfe. The ground on which he feems (for he does not exprefsly fay fo) to reft its probability is a limited view ©f his own principle, the action of bodies on light. He (not knowing any caufe to the contrary) fuppofed that the aftion of all bodies was fimilar on the different kinds of light, that is, that the fpecific velocities of the differently coloured rays had a deter¬ mined proportion to each other. This was. gratui¬ tous ; and it might have been doubted by him who had obferved the analogy between the chemical ac¬ tions of bodies by ele&ive attra&ions and repuifions, and the fimilar a&ions on light. Not only have dif¬ ferent menftrua unequal aftions on their folids, but the order of their affinities is alfo different. In like manner, we might expe& not only that fome bodies would attraft light in general more than , others, but alfo might differ in the proportion of their a&ions on the different kinds of light, and this fo much, that fome might even attraft the red more than the violet. The late'difcoveries in chemiftry fhow us fome very diftinft proofs, that light is not exempted from the laws of chemical atfion, and that it is fufceptible of chemical combination. The changes produced by the fun’s light on vegetable colours, fhows the neceffity of illumination to produce the green fecula ; and the aromatic oils of plants, the irritability of their leaves by the a&ion of light, the curious effedts of it on the mineral acids, on manganefe, and the calces of bif- muth and lead, and the imbibition and fubfequent emiffion of it by phofphorefcent bodies, aie flrong proofs of its chemical affinities, and are quite inex¬ plicable en the theory of undulations. All thefe confiderations taken together, had they been known to Sir Ifaac Newton, would have made him expedl differences quite anomalous, in the difper- five powers of different tranfparent bodies;, at the fame time that they would have afforded to his fagacious mind the ftrongeft arguments for the adtual emiffion of light from the luminous body. Having in this manner eftablifhed the obferved law of refraftion on mechanical principles, (bowing it to be a neceffary confequence of the known adtion of bo¬ dies on light, we proceed to trace its mathematical con- fequences through -the various cafes in which it may be exhibited to our obfervation. I hefe conftitute that part of the mathematical branch of optical fcience 138 which is called dioptrics. The vana- We are quite Unacquainted with the law of adfion tion of the of bod;es on light> t}iat. js> with the variation of the attractions intenfity of the attraduons and repuifions exerted at and repul- different diftances. All that we can fay is, that from fions un- the experiments and obfervations of Grimaldi, New- known. and others, light is defledled towards a body or is attradkd by it, at fome diftancea, and repelled at others, and this with a variable intenfity. The ac¬ tion may be extremely different, both in extent and force, in different bodies, and change by a very dif¬ ferent law with the fame change of dillance. But, ICS. Part T. a mid ft all this variety, there is a certain fimilarity ari- Cau^.of fing from the joint adlion of many particles, which a,-iraa'0",i ffiould be noticed, becaufe it tends both to explain j39 the fimilarity obferved in the refra&ions of light, and The law of alfo its connexion with the phenomena of reflexion, variation in The law of variation in the joint aftion of many particles adjoining to the furface of a refra&ing me-particl/s dium, is extremely different from that of a Angle par-different tide ; but when this laft is known, the other may be from that found out. ^ We (hall iiluftrate this matter by a very done^, but fimple cafe. Let DE (fig-9.) be the furface of a kJwn if medium, and let us fuppofe that the adtion of a par-he known, tide of the medium on a particle of light extends Plate to the diftance EA, and that it is proportional to the CCCLIV, ordinates ED, F/, Gg? H^, &c. of the line A A Cj'/D; that is, that the a&ion of the particle E of the me¬ dium on a particle of light in 1‘, is to its a&ion on a particle in H as F/to HA, and that it is attra&ed at F but repelled at H, as expreffed by the fituation.of the ordinates with refpeft to the abfeiffa. In the line AE produced to B, make EB, E^, EK, Ey, E?, &c. refpedtively equal to EA, EH, EC, EG, EF, &c.. It is evident that a pa: tide of the medium at B will exert no a&ion on the particle of light in E, and that the particles of the medium in * r P £, will exert on it a&ions proportional to HA, Gg, F/j ED. There¬ fore, fuppofing the matter of the medium continuous, the whole a&ion exerted by the row of particles EB will be reprefented by the area AACDE; and the a&ion of the particles between B and ® will be repre- fented by the area AAC/F, and that of the particle* between E and by the area F^DE. Now let the particle of light be in F, and take F»=AE. It is no lefs evident that the particle of light in F will be a&ed on by the particles in Eo alone, and that it will be a&ed on in the fame manner as a particle in E is a&ed on by the particles in B. There¬ fore the a&ion of the whole row of particles EB on a particle in F will be reprefented by the area AAC/F, And thus the a&ion on a particle of light in any point of AE will be reprefented by the area which lies be¬ yond it. But let us fuppofe the particles oflight to .be with¬ in the medium, as at will be re prefer, ted *by the area /*AB, lying be¬ yond it. If we now draw a line AKLMRNPB whofe ordi¬ nates CK, FC/j fR, &c. are as the .ireas ot the other curve, eftimated from A and B ; thefe ordinates will reprefent the whole forces which are exerted by the particles in EB, on a particle of light moving from A to B. This curve will cut the axis in points L, N fuch, that the ordinates drawn through them inter¬ cept areas of the firft curve, which are equal on each fide of the axis; and in thefe points the particle of ught fuftains no a&ion from the medium. Thefe points are very ■ 'T'T™* * a i Parti. OPT Caufe «f very different from the fimilar points of the curve ex- Rt-fra&mn. preffing the aftion of a fingle particle. Thefe laft are u » " in the very places where the light fuftaina the great- eft repulfive aftion of the whole row of particles. In the fame manner may a curve be conftrufted, whofe or¬ dinates exprefsthe united a&ion of the whole medium. From thefe obfervations we learn in general, that a particle of light wichin the fpace of attion is a&ed on with equal f .-ces, and in the fame direction, when at equaf diitances on each fide of the furface of the me¬ dium. Cf the focal dijlance of rap refraSecl ly pojfwg out of one medium into another of different denjity and through a plane furface. Plate CCCl-lV. 140 Law» of re- fr;t be per¬ pendicular to rV, Vf. Becaufe the fines of incidence and refradion are in a conftant ratio, their fimultaneous variations are in the fame conftant ratio. Now the angle RVV is to the * . , . B/3 D, will not di¬ verge from or converge to F, but will be diffufed over the line GYf. This diffufion is called aberration from the focus, and is fo much greater as the rays are more oblique. No rays flowing from or towards R will have point of concourfe with RV nearer to R than F is : But if the obliquity be inconfiderable, fo that the ratio of RP to FP does not differ fenfibly from that of RV to FV, the point of concourfe will not be fen¬ fibly removed from G. G is therefore ufually called the conjugate focus to R. It is. the conjugate focus of an indefinitely Bender pencil of rays falling perpen¬ dicularly on the furface. The conjugate focus of an oblique pencil, or even of two oblique rays, whofe dif¬ perfion on the furface is confiderable, is of more dif¬ ficult invefligatiun. See Gravcfande’s Natural Philofo- phy for a very neat and elementaly determination (e). in a work of this kind, it is enough to have pointed our, in an eafy and familiar manner, the nature of op¬ tical aberration. But as this is the chief caufe of the imperfeftion of optical inftruments, and as the only- method of removing this imperfe&ion is to diminifh this aberration, or correct it by a fubfequent aberration in the oppofite direction, we fhall here give a funda¬ mental and very fimple propofition, which will (with obvious alterations) apply to all important cafes. This is the determination of the foeus of an infinitely {len¬ der pencil of oblique rays RP, Kp. “ Retaining the former conftru&ion for the ray PF, (fig. 1.) fuppofe the other ray Kp infinitely near to RP. Draw PS perpendicular to PV, and Rr perpendicular to RP, and make Pr : FS=VR : VF. On Pr deferibe the ftmicircle rRP, and on PS the femicircle S^P, cut¬ ting the refraded ray PF in p, draw Is follows » (p) We refer to Gravefande, becaufe we confider it as of importance to make fuch a work as cure ferve ts a general index to fcience and literature. At the fame time we take the liberty to ob rve that the fo- cua in qutftion is virtually determined by the conftru&ion which we have given : for the points P F of If ^nC JF.are/£ter™fted> rand therefore its pofition is alfo determined. The fame is true of the pofidoa ori7» therefore the mterkOioa of the two line* ia likewife determined. 28!? OPT Refraction follows from tbt lemma, that if be the focus of g^!^rlcal refra&ed rays, the variation Ftp of the angle of re- . fra£lion is tp the correfponding variation PR^> of the angle of incidence as the tangent of the angle of re- fraftion VFP to the tangent of the angle of incidence VRP. Now Fp may be confidered as coinciding with the arch of the femicircles. Therefore the angles. FR/\ Pr^ are equal, as alfo the angles Frp, PS/». But PS/> is to Frp as Pr to PS; that is, as VR to VI ; that is, as the cotangent of the angle of incidence to the cotangent of the angle of refraction ; that is, as the tangent of the angle of refraftion to the tangent of the angle of incidence. Therefore the point i> is the focus. Of Rfradian ly Spherical Surfaces. General Problem. To find the focus of refracted rays, the focus of in¬ cident rays being given. Plate Let PV* (tigs. 5, 6, 7, 8, 9, io, n, 12, 13, 14,) CCCLV. ke a fphevical furface whofe centre is C, and let the incident light diverge from or converge to R. Solution. Draw the ray RC through the centre, cutting the furface in the point V, which we {hall de¬ nominate the •vertex, while RC is called the axis. This ray pafles on without refra&ion, becaufe it co¬ incides with the perpendicular to the furface. Let t4t RP be another incident ray, which is refrafted at P, The focus draw the radius PC. In RP make RE to RP as the re* fine of incidence m to the fine of refraftion n ; and fpherlcal^ about the centre R, with the diftance RE, defenbe •furfaces the circle EK, cutting PC in K ; draw RK and PF afeertained.,parallel to it, cutting the axis in F. PF is the re- frafted ray, and F is the focus. For the triangles PCF, KCR are fimilar, and the angles at P and K are equal. Alfo RK is equal to RE, and RPD is the angle of incidence. Now ♦n : n=RK : RP, = fin.DPR t fin. RKP,=fin.DPR : fin. CPF. Therefore CPF is the angle of refra&ion correfponding to the angle of incidence RPD, and PF is the refra&ed ray, and F the focus. Q. E. D. CPxCR Cor. 1. CK : CP = CR : CF, and CF=-^— Now CPXCR is a conftant quantity; and therefore CF is reciprocally as CK, which evidently varies with a va¬ riation of the arch VP. Hence it follows, that all the rays flowing from R are not collected at the conju¬ gate focus F. The ultimate fituation of the point F, as the point P gradually approaches to, and at laft coincides with, V, is called the conjugate focus of cen¬ tral rays, and the didance between this focus and the focus of a lateral ray is called the aberration of that ray, arifing from the fphetical figure. There are, however, two fituations of the point R fuch, that all the rays which flow from it are made to diverge from one point. One of thofe is C (fig. 5.), becaufe they all pafs thro’ without refraftion, and there¬ fore flill diverge from C ; the other is when rays in the rare medium with a convex furface flow from a point R, fo fituated beyond the centre that CV is to CR as the fine of incidence in the rare medium is to the fine of refraftion in the denier, or when rays in the rare medium fall on the convex furface of the dea¬ fer, converging to F, fo fituated that CF : CV = % IC S. Parti; m’.n. In this cafe they will all be difperfed from Refraction F, fo fituated that CV : CF =: n : m zz CR : CV^>sPher,caI for fine RPC : fine RKC = 72 : ttj, = CR : CP, -Surta"£i- ; fine RPC: fine PRC. Therefore thr angle PRC is equal to RKC, or to FPC (by conftruftion of the problem), and the angle C is common to the trian¬ gles PRC. FPC ; they are therefore fimilar, and the angles PRC, tPC are equal, and n\m zz CP: CF, = CK : CR. = CR : CP ; therefore CP : CK= CP* : CR1 : but CP and CR are conftant quantities, and therefore CK is a conftant quantity, and (by the corollary) CF is a conftant quantity, and all the rays flowing from R are dftperfed from F by refraftion. In like manner rays converging to F will by refrac¬ tion converge to R. This was firft obferved by Huy¬ gens. 2. If the incident ray R’P (fig. 5.) is parallel to the axis RC, we have PO to CO as the fine of inci¬ dence to the fine of refraftion. For the triangles R’PK’ PCO are fimilar, and PO : CO = R’K’ : R’P, zz m : n. ■ 3. In this cafe, too, w^have the focal diftance of central parallel rays reckoned from the vertex == Til • X VC. For fince PO is ultimately VO, we vi—n have m'.nzz VO : CO, and m—n : m zz VO—CO : 772 VO, = VC : VO, and VO = X VC. This is called the principal focal diftance, or focal diftance of parallel rays. Alfo CO, the principal focal diftance reckoned from the centre, zz X VC. 772 — 72 N. B. When 772 is lefs than n, m—n is a negative quantity.—Alfo obferve, that in applying fymbois to this computation of the focal diftances, thofe lines are to be accounted pofitive which lie from their begin¬ nings, that is, from the vertex, or the centre, or the radiant point, in the direction of the incident rays. Thus when rays diverge from R on the convex fur¬ face of a medium, VR is accounted negative and VC pofitive. If the light pafles out of air into glals, m is greater than 72 ,• but if it pafles out of glals into air, j tn is lefs than 72. If, therefore, parallel rays fall on the convex furface of glafs out of air, in which cafe 722:72 = 3:2 very nearly, we have for the prin- pal Focal diftance —VC, or-k3VC. But if it pafs out of glafs into the convex furface of air, we have VO = —-— VC. or —2 VC ; that is, the focus O will 2—-3 > . . be in the fame fide of the furface with the incident light. In like manner, we fhall have for thefe two cafes CO = + 2VC and — 4. By conftruftion we have RK : RP = t?2 : n by fimilarity of triangles PF : RK = CF : CR therefore PF :PR= 772CF : «CR and 772PRXCF=«CRXPF therefore nzPR : 72CR=PF : CF, and ttiPR—nCR : ?kPR= PF—CF : PF ultimately trVR—tiCR : 7«VR=: VC : VF This is a very general optical theorem, and affords! an eafy method for computing the focal diftance of refrafted rays. For this purpofe let VR, the diftance of the radiant 4 point, 4 'art I. Iffm&in >y Spberi- al Suria- Plate CCCLV. OPT point, be exprefled bp tbe Tymbcrl r, tbe diftance of the focus of refracted rays by the fymbol f, and the radius of the fpherical furface by a ; we have mr - nr—a : mrzza : f, and mar mar mr—n r—a m—nr+nd In its application due attention muft be paid to the qualities of r and a, whether they be pofitive or ne¬ gative, according to the conditions of lafl corollary. 5. IfQjfig. 8. ) be the focus of parallel rays coming from the oppofite fide, we fhall have RQ__- QC — RV : VF. For draw Cq parallel to PF, cutting RP in q ; then Ry : yC-RP : PF. Now y is the focus of the parallel rays FP, Cy. And when the point P ulti¬ mately coincides with the point V, q muft coincide with and we have RQj QC = RV : VF. This is the mod general optical theorem, and is equally applicable to lenfes, or even to a combination , of them, as to fimple furfaces. It is alfo applicable to refledtions, with this difference, that Q^is to be afiumed the focus of parallel rays coming xht fame wTay with the incident rays. It affords us the moft com¬ pendious methods of computing fymbolieally and arith¬ metically the focal diftances in all cafes. 6. We have alfo Ry : RP= RV : RF, and ultimate¬ ly fo central rays RQj RV—RV : RF, and RF = RVT RO * 7T Alfo Ry : RCcczRP : RF, and ultimately RQj RVXRC r RV=RC : RF, and RF=—rq^ • N- B' Thefe four points V, C, F, either lie all one way from R, or two of them forward and two backward. .8. Alfo, making O the principal focus of rays coming the fame way, we have Ry : yC==C(?: oF, and qcxco; ultimately RQj Q£=cO t OF, and OF*= RQ^ and therefore reciprocally proportional to RQ^ becaufe QCXro is a conftant quantity. 1 hefe corollaries or theorems give ns a variety of methods for finding the focus of refrafted rays, or the other points related to them ; and each formula contains four points, of which any three being given the fourth may be found. Perhaps the laft is the moft fimple, as the quantity tfeXcQjs always negative, be¬ caufe 0 and Qjire on different Tides. 9. From this conftru&ion we may alfo derive a very eafy and expeditious method of drawing many refract¬ ed rays. Draw through the centre C (fig. 15* 16-) a line to the point of incidence P, and a line CA pa¬ rallel to the incident ray RP. Take VO to VC as the fine of incidence to the fine of refradtion, and about A, with the radius VO, deferibe an arch of a circle cutting PC produced in B. Join AB; and Pb parallel to AB is the refradted ray. When the in¬ cident light is parallel to RC, the point A coincides with V, and a circle deferibed round V with the dx- ftance VO will cut the lines PC, pC, &c. in the points B£. The demonftration is evident. Having thus determined the focal diftance of re- frafted rays, it will be proper to point out a little more particularly its relation to its conjugate focus of incident rays. We flxall confider the four cafes of You XIII. Part I. ICS. sS<) light incident on the convex or concave furface of aRefra^hon denferora rarer medium. cTlSuifa- 1. Let light moving in air fall on the convex furface ce3< of glafs (fig. 5. to fig. 14.). Let us fuppofe it tend- —' v, ing to a point beyond the glafs infinitely diftant. It will be colledted to its principal focus 0 beyond the vertex V. Now let the incident light converge a little, fo that R is at a great diftance beyond the fur¬ face. The focus of refradled rays F will be a little within O or nearer to V. As the incident rays are made to converge more and more, the point R comes nearer to V, and the point F alfo approaches it, but with a much flower motion, being always fituated be¬ tween O and C till it is overtaken by R at the centre C, when the incident light is perpendicular to the fur¬ face in every point, and therefore fuffers no refradtion. As R has overtaken F at C, it now paffes it, and is again overtaken by it at V. Now the point R is on the fide from which the light comes, that is, the rays diverge from R. After refra&ion they wdll diverge from F a little without R ; and as R recedes farther from V, F recedes ft ill farther, and with an accelerated motion, till, when R comes to Cf, F has gone to an infinite diftance, or the refra&ed rays are parallel. When R ftill recedes, F now appears on the other fide, or beyond V ; and as R recedes back to an in¬ finite diflance, F has come to O : and this complete* the feries of variations, the motion of F during the whole changes of fituation being in the fame direttioa with the motion of R. 2. Let the light moving in air fail on the concave furface of glafs ; and let us begin with parallel ixiei- dent rays, conceiving, as before, R to lie beyond the glafs at an infinite diftance. The rsfra&ed rays will move as if they came from the principal focus O, lying on that fide of the glafs from which the light comes. As the incident rays are made gradually more conver¬ ging, and the point of convergence R comes toward the glafs, the conjugate focus F moves backward from O ; the refrafted rays growing lefs and lefs di¬ verging, till the point R comes to the principal focus on the other fide. The refra&ed rays are now parallel, or F has retreated to an infinite diftance. The incident light converging ftill more, or R coming beween Qjmd V, F will appear on the other fide, or beyond the furface, or within the glafs, and will ap¬ proach it with a retarded motion, and finally overtake R at the furfacc of the glafs. Let R continue its mo¬ tion backwards (for it has all the while been moving backwards, or in a direction contrary to that of the light) ; that is, let R now be a radiant point, moving backwards from the furface of the glafs. F will at firft he without it, but will be overtaken by it at the centre C, when the rays will fuffer no refradfion. R ftill receding, will get without F; and while R re¬ cedes to an infinite diftance, F will recede to O, and the feries will be completed. 2. J^et the light moving in glafs fall on the convex furface of air ; that is, let it come out of the concave fat face of glafs, and lei the incident rays he parallel, or tending to R, infinitely diftant : they will be dif- perfed by reflation from the principal focus O with¬ in the glafs. As they are made more converging, R, comes nearer, and F retreats backward, till R comes O o - to 290 OPT Of Glaffet. toQj the principal focus without the glafs ; when F * is now at an infinite diilance within the glafs, and the refracted rays are parallel. R ftill coming nearer, F now appears before the glafs, overtakes R at the centre C, and is again overtaken by it at V. R now beco¬ ming a radiant point within the glafs, F follows it backwards, and arrives at O, when R has receded to an infinite diftance, -and the feries is completed. 4. Let the incident light, moving'in glafs-, fall on the concave furface of air, or come out of the convex furface of glafs. Let it tend to a point R at an infi¬ nite diftance without the glafs. rI he refra&ed rays will converge to O, the principal focus without the glafs. As the incident light is mar'e more converging, R comes towards the glafs, while F, fetting out from v, alfo approaches the glafs, and R overtakes it at the furface V. R now becomes a radiant point with¬ in the glafs, receding backwards from the furface. F recedes flower at firft, but overtakes R at the centre C, and pafles it with an accelerated motion to an infi¬ nite diftance; while R letreats to the principal focus within the glafs. R ftill retreating, F appears before the glafs ; and while R retreats to an infinite diftance, F comes to V, and the feries is completed. § 2. Of Glaffes. *41 Glass for optical purpsfes maybe ground into Lenfes, nine different fhapes. Glafles cut into five of thofe how many, fhapes are called knfes, which together with their axes are defcribed in vol. 6. page 33. (See Dioptrics). The_other four are, 1. A plcme-glafs, which is flat on both fides, and of r’Pf316 fclual thicknefs in all its parts, as EF, fig. 1. ’ 2. A. flat piano-convex) wbofe convex fide is ground into feveral little flat furfaces, as A. fig. 2. _ 3. A prijm, which has three flat fides, and when viewed endwife appears like an equilateral triangle, as B. 4.. A concavo-convex glafs, as C, which has hitherto received no name, and is feldora, if ever, made ufe of in optical inftruments. A ray of light Gb (fig. 1.) falling perpendicularly •n a plane glafs El, will pafs through the glafs in the fame dii e&ion hi, and go out of it into the air in the fame flraight line in. A ray of light AB falling obliquely on a plane •glafs, will go out of the glafs in the fame dire£lion, but not in the fame flraight line : for in touching the glafs, it will be refra&ed in the line BC ; and in lea¬ ving the glafs, it will be refra&ed in the line CD. Eg. 3>to6. Lemma. There is a certain point E within every double convex or double concave lens, through which every ray that paffes will have its incident and emer¬ gent parts QA, aq parallel to each other : but in a plano-convex cr plano-concave lens, that point E is re¬ moved to the vertex of the concave or convex furface; and in a. menifcus, and in that other concavo-convex lens, it is removed a little way out of them, and lies next to the furface which has the greateft curvature. for let RErbe the axis of the lens joining the cen- tres R, r of its furfaces A, a. Draw any two of their. Lmidiameters RA, ra parallel to each other, and join the points A., a, and the line Aa will cut the axis in the point E above defcribed. For the triangles REA, being equiangular, RE will be to Er in the given I C S. Parti. ratio of the femidiameters RA, ra; and confequently OfGUfle*. the point E is invariable in the fame lens. Now fup- V“—J pofing a ray to pafs both ways along the line Aa, it being equally inclined to the perpendiculars to the furfaces, will be equally bent, and contrarywife in go¬ ing out of the lens ; fo that its emergent parts AQ^, aq will be parallel. Now any of thefe lenfes will be¬ come plano convex or piano concave, by conceiving one of the femidiameters RA, r/b * be their foci for parallel rays coming in the oppofite direc¬ tion ; draw the perpendicular ad, cutting the incident ray in d, and draw da through the centre of the lens: AB parallel to da will be the ray refiadted by the fnft lens. Fhrough the focus of the fc- condlens draw the perpendicular ,2e, cutting AB in O o 2 e ■ 2Q2 OPT Of Vifion. e ; and draw eb through the centre of the fecond lens. ' BD parallel to ^ e will be the next refra&ed ray. Through the focus * of the third lens draw the per¬ pendicular yf, cutting BD in f and draw fc through the centre of the third lens. CE parallel to/c will be the refradled ray } and fo on. §3- Of Vifion. Having deferibed how the rays of light, flowing from objefts, and palling through convex glafles, are colle&ed into points, and form the images of the ob- jedls ; it will be eafy to underfland how the rays are nffe&ed by palling through the humours of the eye, and are thereby colledted into innumerable points on the bottom of the eye, and thereon form the images of the objects which they flow from. For, the differ¬ ent humours of the eye, and particularly the cryltal- line humour, ate to be confidered as a convex glafs ; and the rays in palling through them to be affedfed in the fame manner as in palfing through a convex glafs. A defeription of the coats and humours, &c. has been given at large in Anatomy: but for the reader’s con¬ venience iu this place, we lhall repeat in a few words as much of the defeription as will be fufficient for our prefent purpofe. The eye is nearly globular. It confiils of three "Plate coats and three humours. The part DHHG of the CCCLV11. outer coat, is called thefclerot'icci; the reft, DEFG, the 8‘ cornea* Next within this coat is that called the cho- Pefcnption rou^esi which ferves as it were for a lining to the •f the eye. other, and joins with the iris, mn> mn. The iris is compofed of two fets of mufcular fibres; the one of a circular form, which contrails the hole in the middle called the pupil, when the light would otherwife be too ftrong for the eye ; and the other of radical fibres, tending everywhere from the circumference of the iris towards the middle of the pupil ; which fibres, by their contradlion, dilate and enlarge the pupil when the light is weak, in order to let in the more of its rays. The third coat is only a fine expanfion of the optic nerve L, which fpreads like net-work all over the infide of tfie choroides, and is therefore called the retina ; upon which are painted (as it were) the ima¬ ges of all vifible objedls, by the rays of light which either flow or are reflected from them. Under the cornea is a fine tranfparent fluid like wa¬ ter, which is therefore called the aqueous humour. It gives a protuberant figure to the cornea, fills the tw© cavities mm and ««, which communicate by the pu¬ pil P; and has the fame limpidity, fpecific gravity, and refraftive power, as water. At the back of this lies the cryftalline humour II, which is lhaped like a double convex glafs; and is a little more convex on the back than the fore-part. It converges the rays, which pafs through it from every vifible objeft to its focus at the bottom of the eye. This humour is tranf¬ parent like cryftal, is much of the confiftence of hard jelly, and exceeds the fpecific gravity of water in the proportion of 11 to 10. It is inclofed in a fine tranf¬ parent membrane, from which proceed radial fibres o o, called the ligamentum ciliare, all around its edge j and join to the circumference of the iris. At the back of the cryftalline, lies the vitreous hu- *iour KK, which is tranfparent like glafs, and is ^argeft of all in quantity, filling the whole orb of the ICS. Part F, eye, and giving it a globular ftiape. It is much of Of Vifion. a confiftence with the white of an egg, and very ' little exceeds the fpeeific gravity and rdra&ive power of water. _ _ I46 As every point of an objedt ABC, (ibid.) fends The objedi out rays in ail diredtions, feme rays, from every point"11 th<>refi- on the fide next the eye, will fall upon the cornea be-11* ot the tween E and F; and by paffing on through the hu-yg'^111* mours and pupil of the eye, they will be converged to a« many points on the retina or bottom of the eye, and will thereon form a diflindt inverted pidture cb a of the object. Thus, the pencil of rays q r s that flows from the point A of the objebt, will be con¬ verged to the point a on the retina ; thofe from th« point B will be converged to the point b ; thofe from the point C will be converged to the point c ; mid fo of all the intermediate points : by which means the whole image a be is formed, and the objedt made vi- fihle. Although it mult be owned, that the method by which this fenfation is carried from the eye by the optic nerve to the common fenfory in the brain, and there dilcerned, is above the reach of our com* prehenfion. But that vifion is effedted in this manner, may be demonftrated experimentally. Take a bullock’s eye whilft it is frelh ; and having cut off the three coats from the back-part, quite to the vitreous humour, put a piece of white paper over that part, and hold the eye towards any bright objedf, and you wid fee an inverted piAure of the objedi upon the paper. Since the image is inverted, many have wondered vvhy^they why the objedt appears upright. But we are to con-are feen uf fidtr, i. That inverted is only a relative term: and,r‘ghc. 2. That there is a very great difference between the real objedt and the means or image by which we per¬ ceive it. When all the parts of a diftant profpedt arc painted upon the retina, they are all right with re- fpedt to one another, as well as the parts of the pro- fpedt itfelf; and we can only judge of an objedt’a be¬ ing inverted, when it is turned reverfe to its natural pofition with icfpedt to other objtdts which we fee and compare it with.—If we lay hold of an upright ftick in the dark, we can tell which is the upper or lower part of it, by moving our hand downward or upward ; and know very well that we cannot feel the upper end by moving our hand downward. Juft fo we find by experience, that upon diredfing our eyes towards a tall objedi, we cannot fee its top by turning our eyes downward, nor its foot by turning our eyes upward ; but muft trace the objedi the fame way by the eye to fee it from head to foot, as we do by the hand to feel it; and as the judgment is informed by the motion of the hand in one cafe, fo it is alfo by the motion of the eye in the other. In fig. 9. is exhibited the manner of feeing the fame objedi ABC, by both the eyes D and E at once. J jf When any part of the image c b a falls upon the op-^n tic nerve L, the correfponding part of the objedi be-when view- comes invifible. On which account, nature has wife-cd with ly placed the optic nerve of each eye, not in the middle of the bottom of the eye, but towards the fide pearlj0Ublt| next the nofe; fo that whatever part of the image falls becaufe the upon the optic nerve of one eye, may not fall uponBerrV,e the optic uerve of the other. Thus the point a of the J image ° ® Part I. ^ O/Vifion. image eh a fall* upon the optic nerve of the eye X), but not of the eye E; and the point c falls upon the optic nerve of the eye E, hut not of the eye 1) : and therefore, to both eyes taken together, the whole oh- A BC is vilible< The nearer that any obje£l is to the eye, the larger is the angle under which it is feen, and the magni¬ tude under which it appears. Thus to the eye i), Plate (fig. i.) the objea ABC is feen under the angle CCCLVIH A PC; and its image cba is very large upon the re¬ tina : but to the eye E, at a double diftance, the fame objeft is feen under the angle ApC, which is equal only to half the angle A PC, as is evident by tne figure. The image cba is likewife twice as large in the eye D, as the other image cba is in the eye E. In both thefe reprefentations, a part of the image falls on the optic nerve, and the objedl in the corrtfpond- ing part is inviiible. As the fenfe of feeing is allowed to be occaiioned by the impulfe of the rays from the vifible object up¬ on the retina of the eye, and forming the image of the objedf thereon, and that the retina is only the ex- par.fion of the optic nerve all over the choroides ; it fhould feem furpriling, that the part of the image which falls on the optic nerve fhould render the like part of the objeft invifible ; efpecially as that nerve is allowed to be the inftrument by which the impulfe and image are conveyed to the common fenfory in the brain. That the part of the image which falls upon the middle of the optic nerve is loft, and confequently the correfponding part of the objedl is rendered invifible, i-s plain by experiment. For if a perfon fixes three patches, A, B, C, (fig- 2.) upon a white wall, at the height of the eye, and at the diftance of about a foot from each other, and places himfelt before them, (hut¬ ting the right eye, and directing the left towards the patch C, he will fee the patches A and C, but the middle patch B will difappear. Or, if he (huts his left eye, and direfts the right towards A, he will fee both A and C, but B will difappear; and if he di- redbs his eye towards B, he will fee both B and A, but not C. For whatever patch is direcftly oppo- fite to the optic nerve N, vanifhes. This requires a Itlfle praftice; after which he will find it eafy to direct his eye fo as to lofe the fight of whichever patch he pleafes. This experiment, firft tried by M. Marriotte, occa- conccrmng /Jone,J a new hypothefis concerning the feat of vifion, the feat of he fUpp0fed not to be in the retina, but in the choroides. An improvement was afterwards made upon it by M. Picard, who contrived that an object fhould difappear when both the eyes were kept open. He faftened upon a wall a round white paper, an inch or two in diameter; and by the fide of it he fixed two marks, one on the right hand, and the other on the left, each at about 2 feet diftance from the paper, and fomewhat higher. He then placed himfelf dire&ly before the paper, at the diftance of 9 or 10 feet, and putting the end of his finger over againft both his eyes, fo that the left-hand mark might be hid from the right eye, and the right-hand mark from the left eye. Remaining firm in this pofture, and looking fteadily, with both eyes, on the end of his finger, the paper which was not at all covered by it would total¬ ly difappear. This, he fays, is the more furprifing* T49 Proved by experi- Micnt. T50 Difi ute vslioc. TICS. becaufe, without this particular encounter of the op¬ tic nerves, where no vifion is made, the paper will appear double, as is the cafe when the finger is not rightly placed. M. Marriotte obferves, that this improvement on his experiment, by M. Picard, is ingenious, but dif¬ ficult to execute, fince the eyes muft be confiderably drained in looking at any object fo near to them as four inches ; and propoles another not lefs furprifing, and more eafy. Place, fays he, on a dark ground, two round pieces of white paper, at the fame height, and three feet from one another ; then place yourfelf op- pcfite to them, at the diiiance of 12 or 13 feet, and hold your thumb before your eyes, at the diftance of about eight inches, fo that it may conceal from the right eye the paper that is to the left hand, and from the left eye the paper to the right hand. Then, if you look at your thumb fteadily with both eyes, you will lofe fight of both the papers ; the eyes being fo difpo- fed, that each of them receives the image of one of the papers upon the bale of the optic nerve, while the other is intercepted by the thumb. M. Le Cat purfued this curious experiment a little farther than M. Marriotte had done. In the place of the fecond paper, he fixed a large white board, and obferved, that at a proper diftance he loft fight of a circular fpace in the centre of it. He alfo obferved the Ir/.e of the paper which is thus concealed from the fight, correfponding to feveral diftances, which enabled him to afeertain feveral circumftances relating to this part of the ftru&ure of the eye more exa&ly than had' been done before. The manner in which this curious experiment is now generally made, and which is both the eafieft with refpeft to the eye, and the moll indifputafele with re- fpeft to the faft, is the following. Let three pieces of paper be faftened upon the fide of a room, about two feet afunder ; and let a perfon place himfelt oppofite to the middle paper, and, beginning near to it, retire gradually backwards, all the while keeping one of his eyes fhut, and the other turned obliquely towards that outfide paper which is towards the cohered eye, and he will find a fituation (which is generally at about five times the diftance at which the papers are placed from one another), where the middle paper will entire¬ ly difappear, while the two outermoft continue plainly vifible ; becaufe the rays which come from the middle paper will fall upon the retina where the optic nerve is inferted. It will not furprixe any perfon, even thofe who are the ftrongeft advocates for the retina being the place at which the pencils of rays are terminated, and con¬ fequently the proper feat of vifion, that M. Marriotte was led by this remarkable obfervation to fufpeeb the contrary. He not only did fo 5 but, in confequence of attentively confidering the fubjeft, a variety of other arguments in favour of the choroides occurred to him, particularly kis obfervation, that the retina is traafparent, as well as the cryftalline and other hu¬ mours of the eye, which he thought could only enable it to tranfmit the rays farther; and he could not per- fuade himfelf that any fubftance could be confidered as being the termination of the pencils, and the proper feat of vifion, at which the rays are not flopped in their progrefs. Jie was farther gonfirmed ia his opinion of the fmalF degree 293 Of Vifion. 294 OPT Of Villon, degree of fenfibility in the retina, and of the greater fenfibility of the choroides, by obferving that the pu¬ pil dilates itfelf in the fliade, and contra&s itfelf in a great light; which involuntary motion, bethought, was a clear proof that the fibres of the iris are ex¬ tremely fenfible to the a&ion of light; and this part of the eye is only a continuation of the choroides. He alf® thought that the dark colour of the choroides was intended to make it more fufceptible of the impref- fion of light. M. Pecquet, in anfwer to M. Marriottc’s’obfervation ■concerning the tranfparency of the retina, fays, that it is very imperfe&ly fo, refembling only oiled paper, or the horn that is ufed for lanterns ; and beiides, that its whitenefs demonfirates it to be fuificiently opaque for flopping the rays of light, as much as is neceffary for the purpofe of vifion ; whereas, if vifion be per¬ formed by means of thofe rays which are tranfmitted through fiich a fubftance as the retina, it mufl be very indxftindl. As to the blacknefs of the choroides, which M. Mar- riotte thought to he neceffary for the purpofe of vi- •fion, M. Pecquet obferves, that it is not the fame in all eyes,- and that there are very different fhades of it among the individuals of mankind, as alfo among birds, and fome other animals, whofe choroides is generally black ; and that in the eyes of lions, camels, bears, oxen, flags, fheep, dogs, cats, and many other ani¬ mals, that part of the choroides which is the moll ex- pofed to light, very often exhibits colours as vivid as thofe of mother-of-pearl, or of the iris(F). He admits that there is a dcfedl of vifi@n at the infer- tion of the optic nerve ; but he thought that it was owing to the blooi-veflels of the retina, the trunks -of which are fo large in that place as to obfhuct all vifion. To M. Pecquet’s objeftion, founded on the opacity of the retina, M. Marriotte obferves, that there mufl be a great difference betwixt the flate of that fubftance in living and dead fubjedts ; and as a farther proof of the tranfparency of the retina, and the power of the choroides beyond it to refledt light, he fays, that if a lighted candle be held near to a perfon’s eyes, and a dog, at the diftanetf of eight or ten fteps, be made to look at him, he wonld fee a bright light in the dog’s eyes, which he thought to proceed from the reflection of the light of the candle from the choroides of the dog, fince the fame appearance cannot be produced in the eyes of men, or other animals, whofe choroides is black. To M. Pecquet’s remark concerning the blood vef- fels of the retina, M. Marriotte obferves, that they are not large enough to prevent vifion in every part of the bafe of the nerve, fince the diameter of each of the two veflels occupy no more than ^th part of it. Befides, if this were the caufe of thi* want of vifion, it would vanifn gradually,* and the fpace to which it is confined would not be fo exadtly terminated as it appears to ^ ^ Parc I. We mufl add, that M. Pecquet alfo obferved, that Of Vifion. notwithflanding the infenfibility of the retina at the k——y— infertion of the optic nerve when the light is only mo¬ derate ; yet that luminous objects, fuch as a bright candle placed at the diftance oi four or five paces, do not abfolutely difappear, in the fame circumflances In which a white paper would ; for that this flrong light may be perceived though the picture fall on the bafe of the nerve. “ I cannot help fufpecting, however, (fays Dr Prieflley), that M. Pecquet did not make this obfervatioa with fufficient care. A large candle makes no impreffion on that part of my eye, though it is by no means able to bear a ftrong light.” The common opinion was alfo favoured by the ana¬ tomical defcription of feveral animals by the members of the French academy, and particularly their account of the fea-calf and porcupine; in both of which the optic nerve is inferted in the very axis of the eye, ex¬ actly oppofite to the pupil, wnich was thought to leave no room to doubt, but that in thefe animals the retina is perfeftly fenfible to the impreffion of light at the infertion of the nerve. But this obfervation may deferve to be reconfidered. M. De la Hire took part with M. Pecquet, arguing in favour of the retina from the analogy of the fenfes^ in all of which the nerves are the proper feat of fenfa- tion. . This philofopher, however, fuppofed that the ohoroides receives the impreffions of images, in order to tranfmit them to the retina. M. Perrault alfo took the part of M. Pecquet againfl M. Marriotte, and in M. Perrault’s works we have fe¬ veral letters that palled between thefe two gentlemen upon this fubjedl. This difpute about the immediate inflrument of vi¬ fion was revived upon the occafion of an odd experi¬ ment of M. Mery, recorded in the memoirs of the French academy for 1704. He plunged a cat in wa¬ ter, and expofing her eye to the flrong light of the fun, obferved that the pupil was not at all contra&ed by it; from which he concluded, that the contra&ion of the iris is not produced by the a&ion of the light, but by fome other circumflance. For he contended that the eye receives more light in this fituation than in the open air. At the fame time he thought he obftrvtd that the retina of the cat’s eye was tranfparent, and that he could fee the opaque choroides beyond it : from which he concludes, that the choroides is the fufeflance intended to receive the rays of light, and to be the chief inflrument of vifion. But M. De la Hire replies to this argument of M. Mery, in a me¬ moir for the year 1709, p. J19; in which he en¬ deavours to ffiow that fewer rays enter the eye under water, and that in thofe circumftances it is not fo liable to be affecled by them. Befidts, it is obvious to be remarked, that the cat mufl be in great ter¬ ror in this fituation ; and being an animal that has a very great voluntary power over the mufcles of the iris, and being now extremely attentive to every thing about her, fhe might keep her eye open notwith- ftanding (r , M. MufTchenbroeck fays, that in many animals, as the lion, camel, bear, ox, flag, fheep, dog, cat, Voi nanp e C 10reides 13 not kIack> but blue, green, yellow, or fome other colour. Introduliio, Parti. OPTICS. Of Vifion. ftanding the action of the light upon it, and though fion is effedled, it is the fame in the eyes of all ani- c’"—it might be very painful to her. We are informed, mals. that when a cat is placed in a window through which If the feat of vifion be at the farther furface of the the fun is fhining, and confequently her iris nearly retina, and it be performed by diredt rays, a white clofed, if (he hear a ruftling, like that which is choroides could be of no ufe; and if it were by refiec- made by a moufe, on the outfide of the window, fhe ted rays, a black one could not anfwer the purpofe. will immediately open her eyes to their greateft ex- It is likewife an argument in favour of the choroides tent, without in the lead turning her face from the being the organ of vilion, that it is a fubftance which light. receives a more diftindt impreflion from the rays of M. Le Cat took part with M. Marriotte in this con- light than any other menjbrane in any part of the ani- troverfy, it being peculiarly agreeable to his general mal fyftem, excepting (and perhaps not excepting) hypothefis, viz. that the pia mater, of which the cho- that white cuticle which lies under thefcaksof fifhes; roides is a production, and not the nerves themfelves, whereas the retina is a fubflance on which the light is the,proper indrumentof fenfation. He thought that makes an exceedingly faint impreffion, and peihaps no the change which takes place in the eyes of old people impreflion at all ; fince light, in palling owt of one (the choroides growing lefs black with age) favoured tranfparent medium into another immediately conti- his hypothefis, as they do not fee with that diftindl- guous to it, differs no refradlion or refle&ion, nor are nefs with which young perfons do. M. Le Cat fup- any of the rays abforbed, unlefs there is feme differ- pofed that the retina anfwers a purpofe fimihr to that ence in the refrafting power of the two media, which of the fcarf-lk'n, covering the papilla? pyramidales, proliably is not the cafe between the retina and the vi- which are the immediate organ of feeling, or that of treous humour, which is in contaft with it. And the porous membrane which covers the glandulous pa- wherever the light is not affe&ed by the medium it pillae of the tongue. The retina, he fays, receives the falls upon, we can hardly fuppofe the medium to re- impreflion of light, moderates it, and prepares it for its ceive any impreflion from the light, the a&ion being proper organ, but is not itfelf fenfible of it. probably always mutual and reciprocal. It muff be obferved, that M. Le Cat had difeover- Befides, the retina is fo fituated, as to be expofed to ed that the pia mater, after clofely embracing and con- many rays belides thofe which terminate in it, and ftringing the optic nerve at its entrance into the eye, which, therefore, cannot be fuhfervient to vifion, if it divides into two branches, one of which clofely lines the be performed there. Now this is not the cafe with the cornea, and at length is loft in it, while the fecond choroides, which is in no fliape tranfparent, and has no branch makes what is called the choroicfes, ox uvea. He reflecting fubftance beyond it. alio fliowed that the fclerotica is an expanfion of the du- It is, moreover, peculiarly favourable to the hypo- ra mater; and he fent diffedlions of the eye to the thtfis of the feat of vifion being in the choroides, that royal Academy of Sciences in 1739, to prove thefe we can then fee a fufiicient reafon for the diverfity of affertions, and feveral others which he had advanced its colour in different animals, according as they are in his Trahe de Sens, that were contrary to the opi- circumftanced with refpedft to vifion. In all terreftrial nions of the celebrated Window. animals, which have occafion to make ufe of their eyes To thefe arguments in favour of the choroides, al- by night, the choroides is either of a bright white, or leged by thofe gentlemen among whom the fubjedl was of fome very vivid colour, which refledis the light very firil difeuffed, I)r Ptieftley in his hitlory adds the fol- itrongly. On this account vifion may be performed lowing that had efcaped their notice, but which were w ith lefs light, but it cannot be with great diftind- ibggeited to him by his friend Mr Michell. nefs, the refkdion of the rays doubling their effed. In order that vifion he diftind, the pencils of rays fince it muff extend over fome fpace, all refledion be- which iffue from the feveral points of any objed, mult ing made at a diftance from the refleding body. Be- be collefted either accurately, or at leaft very nearly, fides, the choroides in brutes is not in general perfed- to correfponding points in the eye, which can only be ly white, but a little inclined to blue; .and is therefore, done upon fome uniform furface. But the retina being probably, better adapted to fee by the fainter coloured of a confiderable thicknefs, and the whole of it being light, which chiefly prevails in the night; and we uniformly nervous, and at leaft nearly, if not perfectly, would add, is on the fame account more liable to be tranfparent, prefents no particular furface ; fo that, in ftrongly impreffed by the colours to which they are whatever part of it the pencils be fuppofed to have chiefly expofed. their foci, the rays belonging to them will be fepara- On the other hand, the choroides of birds in gene- ted from one another, either before or after they arrive ral, efpecially eagles, hawks, and other birds of prey, , there, and confequently vifion would be confufed. is black ; by which means they are able to fee with If we fuppofe the feat of vifion to be at the nearer the greateft diftindnefs, but only in bright day-light, furface of the retina, and the images of objeds to be The owl, however, feeking her food by night, has the. formed by dired rays, a confiderable degree of confu- choroides white, like that of a cat. Laftly, in the eves fion could not but ante from the light refleded by the of man, which are adapted to various ufes, the cho- choroides, in thofe animals in which it is white, or co- roides is neither fo black as that of birds, nor fo white loured. On the other hand, it would be impoflible that as that of thofe animals who make the greateft ufe of vifion fhould be performed at this place by light me- their eyes in the night. fleded from the ehoroides, becaufe in many animals it As to a third hypothefis, which is in effed that of is perfedly black, and refleds no light at all; and yet M. De la Hire, which makes both the retina and the fuch animals fee even more diftindly than others. And choroides equally neceffary to vifion, and fuppofes it to cannot but fuppofe that, in whatever manner vi- be performed by the impreffion 0f light on the choroidea 295 Of Vifion. com- 296 OPT Of Vlfion. communicated to the retina; Mr Michel! obferves, tliat n.v in’ j.}ie perceptions can hardly be fuppofed to be fo acute, when the nerves, which are the chief inftruments of fenfation, do not receive the impreffions immediately, but only after they have been communicated to ano¬ ther fubfiance. Befides, it mud be more natural to fuppofe, that, when the principal impreffion is made upon the choroides, it is communicated to the brain by its own proper nerves, which are abundantly fuffi- ii;t cient for the purpofe. Dimenfiom The dimenfions and precife form of the fpot in the of chc ipot which there is no vihon, were more accurately wherecalculated by Daniel Bernouilli, in the following many there is no ner. He placed a piece of money O (fig. 3.) upon vifion. the floor ; and then (hutting one of his eyes, and ma- ate king a pendulum to fwing, fo that the extremity of it might be nearly in the line AO, he obferved at what place C it began to be invifible, and where it again emerged into view at A. Raifing the pendulum higher and lower, he found other points, as H, N, P, G, B, at which it began to be invifible; and others, as M, L, E, A, at which it began to be vifible again; and draw¬ ing a curve through them, he found that it was ellip¬ tical; and, with refpedl to his own eye, the dimenfions of it were as follows; OC was 23, AC to, BD 3, DH 13, and EG 14; fo that the centre being at F, the greater axis was to the lefs as 8 to 7. From thefe data, the plane on which the figure was drawn being obliquely fituated with refpeft to the eye, he found, chat the place in the eye that correfponded to it was a circle, the diameter of which was a feventh part of the diameter of the eye, the centre of it being 27 parts of the diameter from the point oppofite to the pupil, a little above the middle. He concludes with obferving, that, in order that this fpace in which there is no vifion may be as fmall as pofiible, it is ne- ceflary that the nerve fhould enter the eye perpendicu¬ larly, and that both this end, and alfo its entering the stye at a diftance from its axis, are gained by the par¬ ticular manner in which the two optic nerves unite and Become feparate again, by croffing one another. In favour of one of the obfervations of Mr Michell, concerning the ufe of the choroides in vifion, Dr Prieftley obftrves, that Aquapendente mentions the cafe of a perfon . at Pifa, who could fee very well in the night, but very little or none at all in the day¬ time. This is alfo faid to be the cafe with thofe white people among the blacks of Africa, and the in¬ habitants of the ifthmus of America, who, from this circumftance, are called moen-eyed. Our author thinks it probable that their choroides is not of a dark co¬ lour, as it is in others of the human fpecies; but white or light-coloured, as in thofe animals which have moil occafion for their eyes in the night. See Albinos. The following confiJerations in favour of the re¬ tina being the proper feat of vifion, are worthy of remark. Arguments Dr Porterfield obferves, that the reafoa why there for thercti is no vifion at the entrance of the optic nerve into the «a*s being eye, may be, that it wants that foftnefs and delicacy the feat of which it has when it is expanded upon the choroides; V11011 md that, in thofe animals in which that nerve is in- ferted in the axis of the eye, it is obferved to be equally delicate, and therefore probably equally fen- fible, in that place as in any other part of the retina. NJ 248, ICS, Parti, In general, the nerves, when conftringed by their coats, Of Vifion, have but little fenlibility in companion of what they "■—-\r—^ are endued with when they are diveiled of them, and unfolded in a foft and pulpy fubflance. Haller obferves, that the choroides cannot be the univerfal inilrument of vifion, becaufe that fometimes in men and birds, but efpecially in fiihes, it is covered internally with a black mucus, through which the rays cannot penetrate. This writer ipeaks of a fibrous membrane in the retina diftinft from its pulpy fub- ftance. On thefe fibres, he conje&ures, that the imagas of obje&s are painted. M. De la Hire’s argument in favour of the retina, from the analogy of the fenfes, is much flrengthened. by confidering that the retina is a large nervous ap¬ paratus, immediately expofed to the imprefiion of light; whereas the choroides receives bur a flendec fupply of nerves, in common with the fclerotica, the canjun&iva, and the eyelids, and that its nerves are much lefs expofed to the light than the naked fibres of the optic nerve. Indeed, from anatomical confidera- tions, one might imagine that any other part of the body was as fenfible of the impreffion of light as the choroides. That the optic nerve is of principal ufe in vifion, it farther probable from feveral phenomena attending fome of the difeafes in which the fight is affefted. When an amaurofis has affefted one eye only, the optic nerve of that eye has been found manifellly al¬ tered from its found Hate. Dr Prieftley was prefent when Mr Hey examined the brain of a young girl, who had been blind of one eye, and faw that the optic nerve belonging to it was confiderably fmaller than the other ; and he informed him, that upon cutting into it, he found it to he much harder, and cineri- tious. Morgagni, indeed, mentions two cafes, in one of which he found the optic nerves fmaller than ufual, and of a cineritious colour, when, upon inquiry, he was informed that the perfon had not been blind, though there might have been fome defed in the fight of one of the eyes. In the other cafe, only one of the optic nerves was affeded in that manner, and the eye itfelf was in other refpeds very perfed. Here, alfo, he was exprefsly told, that the perfon was not blind of that eye: but it appears that he himfelf had not been acquainted with the perfons whom he diflec- ted ; and there have been many cafes of perfons being blind of one eye, without knowing it themfelves, fora confiderable time. Moreover, as the optic nerve is folely fpent in form¬ ing the retina, fo no fundion of the eye, not immedi¬ ately fubfervient to vilion, is affeded by an amaurofis. On the contrary, thofe nerves which go to the cho¬ roides are found to retain, in this difeafe, their natu¬ ral influence. The iris will contrad in a recent gutta ferena of one eye, - if the other remains found, and i# fuddenly expofed to a ftrong light. The fclerotis, conjundiva, and eyelids, which receive their nerve* * from the fame branches as the choroides, retain their fenfibility in this diforder. The manner in which perfons recover from an amaurofis, favours the fuppofition of the feat of vifion being in the retina ; fince thofe parts which are the moil diilant from the infertion of the nerve recover their fenfiWlity the fooneft, being in thofe places the ! moft Parti. Of VififiP- *53 Of blight and obfcur vifion. *54 Of diffindl Vifion at different dtfUnces. OPT moll pulpy and fofteft ; whereas there Is no renfon to think that there is any difference in this refpe&in the different parts of the choroides. Mr Hey has been repeatedly informed, by perfons labouring under an itnperfe£t amaurofis, or gutta ferena, that they could rot, when looking at any objedt with one eye, fee it fo diftinftly when it was placed diredtly oppofite to the pupil, as when it was utuated fomewhat obliquely. And thofe ptrfons whom he had known to recover from a perfetl amaurofis, firff difcovered the objects whole images fell upon that part of the retina which is at the greateff diftance from the optic nerve. We flrall conclude thefe remarks with obfcrving, that if the retina be as tranfparent as it is generally reprefented to be, fo that the termination of the pen¬ cils muff neceffarily be either upon the choroides, of fome other opaque fubftanee interpofed between it and the retina, the action and rea&ion occafioned by the rays of light being at the common furface of this body and the retina, both thefe mediums (fuppofmg them to be equally fenfible to the impreflion of light) may be equally affe&ed ; but the retina, being naturally much more fenfible to this kind of impreffion, may he the only inftrument by which the fenfation is conveyed to the brain, though the choroides, or the black fub- flance with which it is fometimes lined, may alfo be abfolutely neceffary for the purpofe of vifion. Indeed, when the reflexion of the light is made at the common boundary of any two mediums, it is with no propriety that this effedt is afcribed to one of them rather than the other; and the ftrongeft refledtions are often made back into the denfeft mediums, when they have been contiguous to the rareff, or even to a vacuum. This is not far from the liypothefis of M. de la Hire, and will completely account for the entire defedt of vifion at the infer! ion of the optic nerve. Viiion is diflinguifhed into bright and olfcure, di- -Jl'nd and coufufecl.—It is faid to be bright, when a fufficient number of rays enter the pupil at the fame time ; cbfcure, when too few. It is diftindt when each pencil of rays is colic died into a focus exadtly upon the retina; corfufed, when they meet before they come at it, or when they would pafs it before they meet; for, in either of thefe laft cafes, the rays flowing from different parts of the objedt will fall up¬ on the fame part of the retina, which mull neceffarily render the image confufed and indiilindt.—Now, that ohjedls may appear with a due brightnefs, whether more or fewer rays proceed from them, we have a power of contradting or dilating the pupil, by means of the mufcular fibres of the iris, in order to take in more or few^er rays as occafion requires. But this power has its limits. In fome animals it is much greater than in others; particularly in fuch as are obliged to fetk their food by night as well as by day, as in cats, &c. That the rays may be cclledted into points exadlly upon the retina, that is, that objedls may appear di- ftndl, whether they be nearer or farther off, i. e. whe- Vol.XIII. Part I. ICS. _ 497 ther the rays proceeding from them diverge more or Of Vifion. lefs, we have a power of contradling or relaxing the ■—“"N ””i /igametita ciliaria, and thereby altering the form of the cryftalline humour, and with it the focal dillance of the rays. Thus, when the objedt we view is far off, and the rays fall upon the pupil with a very i'mall degree of divergency, we contradl the /igametita ciUaria} which, being concave towards the vitreous humour, do thereby comprefs it more than otherwife they would do : by this means it is made to prefs harder upon the backfide of the cryftalline humour, w’hich is thereby rendered flatter; and thus the rays proceed farther before they meet in a focus, than otherwife they would have done. Add to this, that we dilate the pupils of our eyes (unlefs in cafes where the light is fo ftrong that it offends the eye), and thereby admit rays into them that arc more diverging than thofe which would otherwife enter. And, when the rays come from an objedt that is very near, and therefore diverge too much to be collcdled into their refpedtive foci upon the retina, by relaxing the ligamenta cUiariay we give the cryftalline a more convex form, by which means the rays are made to fuffer a proportionably greater degree of refradtion in palling through it. Some phi- lofophers are of opinion that wre do this by a power of altering the form of the eye ; and others, by remo* ving the cryftalline forwards «r backwards as occa¬ fion requires i but neither of thefe opinions is pro¬ bable ; for the coats of the eye are too hard, in fome animals, for the firft; and, as to moving the cryftalline out of its place, the cavities of the eye feem to be too well filled with the other humours to admit of fuch removal. Befides this, in the cafe above-mentioned, by cort- tradlirtg the pupils of our eyes, wc exclude the more diverging rays, and admit only fuch as are more ealily .s refradted into their refpedtive foci(c). But vifion is not diHindi at all di(lances, for our power of contrac¬ ting and relaxing the ligamenta ci/iaria is alfo circum- feribed within certain limits. * In thofe eyes where the tunica cornea is very pro-of ihort- tuberant and convex, the rays of light fuffer a very fighted and confiderable rtfradlion at their entrance into the aque-10.11^1^- ous humour, and are therefore colledtej into a focused PC0P e' before they fall upon the retina, nnlefs the objedt be placed very near, fo that the rays which enter the eye may have a confiderable degree of divergency. People that have fuch eyes are faid to be purblind. Now, the nearer an objedt is to the eye, the greater is the image of it therein, as explained above : thefe people, there¬ fore can fee much fmaller objedls than others, as fee¬ ing much nearer ones with the fame diftindtnefs; and their fight continues good longer than that of othef people, becaufe the tunica cornea of their eyes, as they grow old, becomes plainer, for want of that redun¬ dancy of humours with which they were filled before. On the contrary, old men having the cornea of their eyes too flat for want of a fufficient quantity of the aqueous humour to fill them out, if the rays diverge P P too (g) Accordingly it is obferved, that if w'e make a fmall hole with the poiht of a needle through a piece of paper, and apply that hole clofe to the eye, making ufe of it, as it were, inftead of a pupil, we ihall be able to fee an objedl diftmdlly through it, though the objedt be placed within half an inch of the eye. 298 OPT Of vifion. too much before they enter the eye» they cannot be brought to a focus before they reach the retina; on which account thofe people cannot fee diftinctly, un- kfs the objttt be fituated at a greater diftance from the eye than is required for thofe whofe eyes arc of a due form. The latter require the afhdance of convex glaffes to make them fee objefls diftinitly ; the for¬ mer of concave ones. For if either the cornea ab c pjate (fig. 4.), or cryftalline humour e, or both of them, be cccLvur. too flat, as in the eye A, their focus will not be on the retina as at A, where it ought to be, in order to render vifion diftinct ; but beyond the eye, as at /. This is remedied by placing a convex gird's gh before the eye, which makes the rays converge fooncr, and imprints the image duly on the retina at d. Again, if either the cornea, or cryftalline humour, or both of them, be too convex, as in the eye B, the rays that en¬ ter it from the objeft C will lie converged to a focus in the vitreous humour, as at f; and by diverging from thence to the retina, will form a very conhifed image thereon ; and fo, of ccuife, the obferver will have as confufed a view of the object as if his eye had been too flat. This inconvenience is remedied by placing a concave glafs gh before the eye ; which glafs, by caufing the rays to diverge between it and the eve, lengthens the focal diftance fo, that if the glafs be properly chofen, the rays will unite at the retina, and form a diftindt image of the objedt 156 upon it. Of the leaf! Such eyes as are of a due convexity, cannot fee any v^ffon objedft diftindtly at lefs diftance than fix inches; and there are numbcrlefs objedts too fmail to be feen at that diftance, becaufe they cannot appear under any fenfible angle.-—Concerning the leaft angle under . which any objtdl is vifible, there was a debate be¬ tween Dr Hooke and Hevelius. The former afl'erted, that no objeft could well be feen if it fubtended an angle lefs than one minute; and, if the objedt be round, as a black circular fpot upon a white ground, . or a white circle upon a black ground, it follows, from an experiment made by Dr Smith, that this is aear the truth ; and from thence he calculates, that the diameter of the pidture of fuch leaft vifrble point upon the retina is the Scooth part of an inch; which he therefore calls a ferifillepoint of the retina. On the ^ther hand, Mr Courtivron concluded from his expe¬ riments, that the fmalleft angle of vifion was 40 fe- conds. According to Dr Jurin, there are cafes in which a much fmaller angle than one minute can be difeerned by the eye; and in order to throw light up¬ on the fubjedt, he obferves, that, in order to our per¬ ceiving the impreffion made by any objedt upon our fenfes, it muft either be of a certain degree of force, or of a certain degree of magnitude. For this reafon, a ftar,, which appears only as a lucid point through a tdefcope, fubtending net fo much as an angle of one ftcond, is vifible to the eye; though a white or black fpot. of 25 or 3ofeconds, is not to be perceived. Al- I.ines can 0 ^3ne ^e fame breadth with the circular fpot will be feen un- be vifible, at fuch a diftance as the fpot is not to be derlm after perceived at; becaufe the quantity of impreffion from fpots^and*11 hne is much greater than from the fpot; and a why/ longer line is vifible at a greater diftance than a fhorter ©ne of the fame breadth. He found by experience, that a Giver wire could be feen when it fubtended an ICS. Parti. angle of three feconds and an half; and that a filkOf Vifimm thread could be feen when it fubtended an angle of two —v— feconds and an half. This greater vifibility of a line than of a fpot feems to arife only from the greater quantity of the impref¬ fion ; but without the limits of perfect vifion, our au¬ thor obferves, that another caufe concurs, whereby the difference of vifibility between the fpot and the line is rendered much more confiderabie. For the im- prtftion upon the retina made by the line is then not only much greater, but alfo much fironger, than that of the Ipot; becaufe the faint image, or penumbra, of any one point ol the line, when the whole is placed be¬ yond the limits of diftirKA vifion, will fall within the faint image ot the next point, and thereby much iu- crevfe the light that comes fiom it.' In feme cr.fes our author found the. caufe of indi- ftinCt vifion to be the liufteatinefs of the eye; as our being able to fee a fingle black line upon a white ground, or a lingle white line upon a black ground, and not a white line between two black ones on a. white ground. In viewing either of the former ob¬ jects, it the eye be imperceptibly moved, all the effiedt will be, that the objedt will be painted upon a different part of the retina ; but, wherever it is painted, there will be but one piftuie, fingle and uncotnpounded with any other. But in viewing the other, if the eye fluc¬ tuate ever fo little, the image of one or other of the black lines will be fhifted to that part of the retina which was before poffeffed by the white line; and this muft occafion fuch a dazzle in the eye, that the white line cannot be diitindtly perceived, and diftinguiihed from the black lines; which, by a continual ftu&ua- tion, will alterBately occupy the fpace of the white line, whence muft arife an appearance of one broad dark line, without any manifeft reparation. By trying this experiment with two pins of known diameters, fet in a window againft the fky light, with a fpace between them equal in breadth to one of the pins, he found that the diftance between the pins could hardly be diftinguifhed when it fubtended an angle of lefs than 40 feconds,, though one of the pins alone could be diftinguifhed when it fubtended a much lefs angle. But though a fpace between two pins cannot be diftinguifhed by the eye when it fubtends an angle lefs than 40 feconds, it would be a miftake to think, that the eye muft neceflarily commit an error of 40 le- conds in eftimating the diftance between two pins when they are much farther from one another. For if the fpace between them fubtend an angle of one minute, and each of the pins fubtend an angle of four feconds, which is greater than the leaft angle the eye can diftinguifh, it is manifeft that the eye may judge • of the place of each pin within two feconds at the molt ; and confequemly the error committed in ta¬ king the angle between them cannot at the moft ex.* ceed four feconds, provided the kiftrument be fuffir ciently exaft. And yet, fays he, upon the like mif- take was founded the principal objection of Dr Hooke againft the accuracy of the cekftkl obfervations of Hevslius. A black fpot upon a white ground, or a white fpot upon a black ground, he fays, can hardly be perceived by the generality of eyes when it fubtends a kfs angle than one minute. And if two black fpots be made 3 upon Part T. Of Vifion. OPT upon tvhite paper, with a fpaee between thefn.equal in breadth to one of their diameters, that fpace is not to be diftinguifhed, even within the limits of perfeft vi¬ fion, under fo fmall an angle as a fingle fpot of the fame fize can be diftinguifhed. To fee the two fpots diftin&ly, therefore, the breadth of the fpace between them mull fubtend an angle of more than a minute. It would be very difficult, he fays, to make this experi¬ ment accurately, within the limits of perfect vifion , becaufe the objects muft be extremely fmall; but by a rude trial, made with fquare bits of white paper, pliced upon a black ground, he judged, that the leafl amde ruder which the interval of two objects could be Of firijde vition with two eyes. perceived, was at lea ft a fourth part greater than the feaft angle under which a fingle o' jeft can be percei¬ ved. So that an eye which cannot perceive a fingle object under a fmaller angle than one minute, will not perceive the interval between two fuch objedts under a left angle than 75 feconds. Without the limits of perfect vifion, the diftance at which a fingle objedt ceaies to be perceivable will be much greater in proportion than the diftance at which a fpace of equal breadth between two fuch objedts ceafes to be perceivable. Tor, without thefe limits, the image of each of the objects will be attended with a penumbra, and the penumbra of the two near ob- jedts will take up part of the fpace between them, and thereby render it lets perceivable ; but the penumbra will add to the breadth of the fingle objedt, and will thereby make it more perceivable, unkfs its image be very faint. Upon the fame principles he hkewife accounts for the radiation of the liars, thereby the light feemsto project from them different ways at the fame time. Mr Mayer made many experiments in order to af- certain the fmalleft angle of vifion in a variety of re- fpedts. He began with obferving at what diftance a black fpot wras vifible on white paper; and found, that when it could barely be diltinguifhed, it fubtended an angle of about 34 feconds. When black lines were difpofed with intervals broader than themfelves, they were diftinguifhed at a greater diflancc than they could be when the objedts and the intervals were of an equal breadth, in all thefe cafes it made no difference whe¬ ther the objedts were placed in the fhade or in the itrong light of the fun ; but when the degrees of light v/ere fmall, their differences had a confiderable efledt, though by no means in proportion to the diffei'ences of the light. For if an objedt was illuminated to fuch a degree as to be juft vifible at the* diftance of nine feet, it would be vifible at the diftance of four feet, though the light was diminifhed above 160 times. It appeared in the courfe of thefe experiments, that common day light is, at a medium, equal to that of 2 <; candles placed at the diftance of one foot from the objedt. As an image of every vifible objedt ft painted on the retina of each of our eyes, it thence becomes a natu¬ ral quellion, Why we do not fee every thing double ? It was the opinion of Sir Ifftac h ew ton and others, that objedts appear fingle becauiethe two optic nerves unite before they reach the brain. But Ur Porterfield (hows, from the obfervation of feveral nnatomills, that the optic nerves do not mix, or confound their fub- itauce, being only united by a clofe cohefiori; and ob- I G S. . 259 jefts have appeared Angle where the optic nerves wefi of v n ,r. found to be disjoined. . I59 Dr Briggs fuppofed that fingle vifion was owing to Solutions of the equal tenfion of the correfponding parts of the op- this diflt- tic nerves, whereby they vibrated in a fynchronous culty by manner. But, befides feveral improbable circumftan- Ur Bn°S*» ces in this account, Dr Porterfield fhows that fadts do by no means favour it. To account for this phenomenon, this ingenious writer fuppofes, that by an original law in our natures, we imagine objedts to be fituated fomewhere in a right line drawn from the pidtute of it upon the retina> Dr through the centre of the pupil. Confequently, the fame objedt appearing to both eyes to be in the fame place, the mind cannot diftinguilh it into two. In an- fwer to an objedtion to this hypothefis. from objedls appearing double when one eye is diftorted, he fays the mind miftakes the pofition of the eye, imagining that it had moved in a manner correfponding to the other, in which cafe the conclufion would have been juft. In this he feems to have recourfe to the power of habit, though in words he difclaims that hypothefis. This principle, however, has generally been thought to be fuffident to account for this appearance. _ Origi¬ nally, every objedt making two pictures, one in each eye, is imagined to be double ; but by degrees, we find, that when two correfponding parts of the retina are impreffed, the objedt is but one; but if thofe cor¬ refponding parts be changed, by the diftortion of one of the eyes, the objedt muft again appear double as at the fir ft. This feems to be verified by Mr Chefel- den ; who informs us, that a gentleman, who from a blow on his head had one eye diftorted, found every objedt to appear double ; but by degrees the rnoft familiar ones came to appear fingle again, and in time all objedts did fo, without any amendment of the diftortion. A cafe iimilar to this is mentioned by Dr Smith. > l6f On the other hand, Dr Reid is of opinion, that the Dr correfpondence of the centres of the two eyes, on which in£i fingle vifion depends, does not arife from cuftom, but from fome natural conftitution of the eye and of the mind. He makes feveral juft objedtious to the cafe of Mr Fofter, recited by Dr Smith and others ; and thinks that the cafe of the young man couched by Chefelden, who faw fingly with both eyes immediately upon re¬ ceiving his fight, is nearly decifive in proof of his fup- pofition. He alio found that three young gentlemen^ whom he endeavoured to cure ot fqumting, faw ob- . jedts fingly, as loon as ever they were brought to di¬ rect the centres of both their eyes to the fame ob¬ jedt, though they had never been ufed to do fo from their infancy ; and he obferves, that there are cates, in which, notwithftanding the fulleft convidtion of an objedt being fingle, no piadtice of looking at it will ever make it appear fo, as when it is feen through a multiplying glafs. To all thefe folutions of the difficulty refpedting fingle vifion by both eyes, objections have been lately made which feem infurmountable. By experiments judicioudy conceived and accurately conducted, Dr Wells has fliown, that it is neither by cuftom alone, nor by an original property of the eyes alone, that ob¬ jedts appear lingle} and having demolifhed the theories P p 2 of 3°© Of Vifion. 162 I5r Wells. * £jfiy on jingle yifton, SiC. OPT of others, he thus accounts for the phenomenon him- felf. “ The vlfible place of an objefl being compofed of its vjfible diftance and viiible diredlion, to fhow how it may appear the fame to both eyes, it will be neceffary (fays he*) to explain in what manner the diflance and dire&ion, which are perceived by one eye, may co¬ incide with thofe which arc perceived by the other.” With refpedl to viiible diftance, the author’s opinion feems not to differ from that which we have ftatedelfe- where (fee Metaphysics, n* 49, 50) ; and therefore we have to attend only to what he fays of vifible di- reiffion. When a fmall objefi is fo placed with refpeft to either eye, as to be feen more diftinftly than in any other fituation, our author fays that it is then in the optic axis, or the axis of that eye. When the two optic axes are direded to a fmall objed not very di- ffant, they may be conceived to form two lides of a triangle, of which the bafe is the interval between the points of the corners where the axes enter the eyes. This bafe he called the vifual bafe ; and a line drawn from the middle of it to the point of interfedion of tire optic axes he calls the common axis. He then pro¬ ceeds to fhow, that objeds really Jhiiated in the optic axis do net appear to be in that line, but in t\it common axis. “ Evtry perfon (fays he) knows, that if an objed be viewed through two fmall holes, one applied to each eye, the two holes appear but as one. The theories hitherto invented afford two explanations of this fa£t. According to Aguilonius, Lkchales, Dr Porterfield, and Dr Smith, the two holes, or rather their borders, will be feen in the fame place as the objed viewed through them, and will confequently appear united, for the fame reafon that the objed it- felf is feen fingle. But whoever makes the experiment will ciftindly perceive, that the united hole is much nearer to him than the objed ; not to mention, that «ny fallacy on this head might be correded by the information from the fenfe of touch, that the card or other fubffance in which the holes have been made is within an inch or lefs of our face. The ether explanation is that furnifhed by the theory of Dr Reid. According to it, the centres of the retinas, which in this experiment receive the pidures of the holes, will, by an original property, reprefent but one. This theory, however, though it makes the two holes to appear one, does not determine where this one is to be feen. It cannot be feen in only one of the per¬ pendiculars to the images upon the retinas, for no reafon can be given why this law of vifible diredion, which Dr Reid thinks eftablilhed beyond difpute, if it operates at all, fhould not operate upon both eyes at the fame time ; and if it be feen by both eyes in fuch lines, it muft appear where thofe lines crofs each other, that is, in the fame place with the objed view- through the holes, which, as I have already mentioned, is contrary to experience. Nor is it feen in any di¬ redion, the confiquence of a law affeding both eyes confide!ed as one organ, but fufpended when each eye is ufed feparately. For when the two holes appear one, if we pay attention to its fituation, and then clofe one eye, the truly fingle hole will be feen by the eye remaining open in exadly the fame diredion as the apparently fingle hole was by both eyes. ICS. Part “ Hitherto I have fuppofed the holes almofttcuching Of VHkm. the face. But they have the fame unity of appearance, in whatever parts of the optic axes they are placed ; whether both be at the fame diftance from the eyes, or one be clofe to the eye r.; the axis of which it is, and the other almoft contiguous to the objtd feen through them. If a line, therefore, be drawn from the objed to one of the eyes, it will reprefent all the real or tangible pofitions of the hole, which allow the objed to be feen by that eye, and the whole of it will coincide with the optic axis. Let a fimilar line be drawn to the other eye, and the two muft appear but as one line ; for if they do not, the two holes in the optic axes will not, at every diftance, appear one, whereas experiments prove that they do. This united line will therefore reprefent the vifible diredion of every objed fituated in either of the optic axes. But the end of it, which is toward the face, is feen by the right eye to the left, and by the left eye as much to the right. It muft be feen then in the middle between the two, and confequently in the common axis. And as its other extremity coincides with the point where the optic axes interftd: each other, the whole of it muft lie in the common axis. Hence the truth of the propofition is evident, that ofcjeds fituated in the optic avis, do not appear to be in that line, but in the common axis.” He then proves by experiments, for which we muft refer to his work, that objeds fituated in the com¬ mon axis do not appear to be in that line, but in the axis of the eye by which they are not feen : that is, an objed fituated in the common axis appears to the right eye in the axis of the left, and vice verfa. Hiy next propolkion, proved likewife by experiments, is, that “ objeds, fituated in any line drawn through the mutual interfedion of the optic axes to the vifual bafe, do not appear to be in that line, but in another, draws through the fame interfedion, to a point in the vifual bafe diftant half this bafe from the fimilar extremity of the former line towards the left, if the objeds be feen by the right eye, but towards the right if feen by the left eye.” From thefe propofitions he thus fatisfadorily ac¬ counts for fingle vifion by both eyes. “ If the queftion be concerning an objed at the concourfe of the optic axes, it is feen fingle, becaufe its two fimilar appear¬ ances, in regard to lize, fhape, and colour, are feem by both eyes in one and the fame diredion, or, if yoii will, in two diredions, which coincide with each other through the whole of their extent. It therefore mat¬ ters not whether the diftance be truly or falfely efti- mated ; whether the objed be thought to touch our eyes, or to be infinitely remote. And hence we have a reaion, which no other theory of vifible diredion affords, why objeds appeared iingle to the young gentleman mentioned by Mr Chefelden, immediately after his being couched, and before he could have learned to judge of diftance by fight. “ When two fimilar objeds are placed in the optic axes, one in each, at equal diftances from the eyes, they will appear in the fume place, and therefore one, for the fame reafon that a truly fingle objed, in the concourfe of the optic axes, is feen fingle. 4< To finifh this part of my fubjed, it feems only neceffary to determine, whether the dependence of vk lible diredion upon the adions of the naufcles of the 4 eyes. PartT. O V T Of Vifion. eyes be eflablifbed by nature, or by cuftom. But -—¥— fafts are here wanting. As far as they go, however, they ferve to prove that it arifes from an original principle of our coullitution. For Mr Chefelden s patient faw objects fingle, and conlequently in the fame direftions with both eyes, immediately after he was couched ; and perfons affedted with fquinting from their tarlieft infancy fee objetts m the fame direftions with the eye they have never been accudomed to em¬ ploy, as they do with the ether they have conftantly ufed.” The author removes many difficulties, and obviates the objections to which his theory may feem mold liable. The whole work deferves to be attentively ftudied by every optician ; and wo therefore recommend it to the perufal of our readers. d*3 We are indebted to Dr Jurin for the following cu- feerfwith. r’ous experiments, to determine whether an object feen both eyes by both eyes appears brighter than when feen with appear one only. brighter a fljp 0f c|ean white paper direCtly before feeu with' on a and applying the fide of a book clofe only one. to his right temple, fo as that the book was advanced conlxderably more forward than his face, he held it in fuch a manner, as to hide from his right eye that half of the paper which lay to his left hand, while the le.t half of the paper was feen by both eyes, without any impediment. Then looking at the paper with both eyes, he ob- ferved it to be divided, from the top to the bottom, by a dark line, and the part which was feen with one eye only was manifeitly darker than that which was feen with both eyes •, and, applying the hook to his left temple, he found, by the refult of the experi¬ ment, that both his eyes were of equal goodnefs. Fie then endeavoured to find to what degree this cxcefs of brightnefs amounted ; and comparing it with the appearance of an objeCl illuminated partly by one candle and partly by two, he was furprifed to find that an objeft feen with two eyes is by no means twice as luminous as when it is feen with one only ; and af¬ ter a number of trials, by which he made the propor¬ tion lefs and lefs continually, he found, that when one paper was illuminated by a candle placed at the di- Ibunce of three feet, and another paper by the fame candle at the fame diftance, and by another candle at the diftance of 11 feet, the former feen by both eyes, and the latter with one eye only, appeared to ]>e of equal whitenefs ; fo that an object feen with both eyes appears brighter than when it is feen with one only by about a 13th part. But he acknowledges, that it is dif¬ ficult to make this experiment exactly. He then proceeded to inquire, whether an objeCt feen with both eyes appears any thing larger than when feen with one only; but he concluded that it did not, except on account of fome particular circumftances, as in the cafe of the binocular telefcope and the concave fpeculum. M. du Tour maintains, that the mind attends to no more than the image made in one eye at a time ; and produces feveral curious experiments in favour of this hypothefis, which had alfo been maintained by Kepler and almoft ail the firit opticians. But, as M. Buffon obferves, it is a fufficient anfwer to this hypothefis, how ingenioully foever it may be fupported, that we fee mort diftinftly with two eyes than without; and that ICS. when a round objeft is near us, we plainly fee more of Of v'n°r- the furface in one cafe than in the other. There are "v alio other faffs which clearly prove the contrary of what is maintained by M. du Tour. With refpect to fingle vifion with two eyes. Dr Flartley obferves, that it deferves particular attention, that the optic nerves of men, and fuch other animals as look the fame way with both eyes, unite in the cdla turcica in a ganglion, or little brain, as one may call it, peculiar to themfelves 1 and that the affociations between fynchronous impreffions on the two retinas mull be made fooner and cemented ftronger on-this account; alfo that they ought to have a much greater power over one another’s images, than in any other part of the bndy. And thus an impreffion made on the right eye alone, by a fingle obje&, may propagate itfelf into the left, and there raife up an image almoit equal in vividnefs to itfelf;'and conlequently when we fee with one eye only, we may, however, have pi&ures in both eyes. A curious deception in vifion, arifing from the ufe of both eyes, was obferved and accounted for by Dr Smith. It is a common obfervation, he fays, that ob- jedls feen with both eyes appear more vivid and ftronger than they do to a fingle eye; efpecially when both of them are equally good. A perfon not fhort-lighted may foon be convinced of this fad, by- looking attentively at objeds that are pretty remote, firlt with one eye, end then with both. This obfer- vation gave occaiion to the conftrudion of the bino¬ cular telefcope, in the ufe .of which the phenomenon is ftill more ftrlking. Befides this, our author obferves, that there is ano¬ ther phenomenon obfervable with this inftrument, which is very remarkable. , In the foci of the two telefcopes there are two equal rings, as ufual, which terminate the pidures of the objeds there formed, and confequently the vifible area of the objeds themfelves. Thefe equal rings, by reafon of the equal eye-glaffes, appear equal, and equally diftant when feen feparately by each eye ; but when they are feen with both eyes, they appear much larger, and more diftant alfo ; and the objeds feen through them do alfo appear much larger, though circumfcribcd by their united rings, in the fame places as when they were feen fepa¬ rately. He obferves, that the phenomenon of the enlarged circle of the vifible area in the binocular telefcope, may be fecn very plainly in looking at diftant objeda through a pair of fpedacles, removed from the eyes about fonr or five inches, and held fteady at that di¬ ftance. The two innermoft of the four apparent rings, which hold the glaffes, will then appear united in one larger and more diftant ring than the two outermoft, whicii will hardly be vifible unlefs the fpedacles be farther removed. A curious circumftance relating to the effed of one eye upon the other, was noticed by M. iEpinus, who obferved, that, when he was looking through a hole made in a plate of metal, about the 10th part of a line in diameter, with his left eye, both the hole itfelf appeared larger, and alfo the field of view feen through i- was more extended, whenever he fhut his right eye ; and both thefe effeds were more remarkable when that eye was covered with his hand. Fie found confidet*» able difficulty in meafuring this augmentation of the apparent. 5° 2 O Of Villon, apparent diameter of the hole, and of the field of view; u—y—- ^ at lengt], he found, that, when the hole was half an inch, and the tablet which he viewed through it was three feet from his eye, if the diameter of the field when both his eyes were open was I, it became when the other eye was Ihut, and nearly 2 when his hand was laid upon it. Upon examining this phenomenon, it prefently ap¬ peared to depend upon the enlargement of the pupil led, the pu-of one eye when the other is clofed, the phyfical or jul t f the anatomical caufe of which he did not pretend to aliign ; «ther^is en-j.)Ut he obferves, that it is wifely appointed by divine k Providence, in order that when one eye fails, the field of view in the other may be extended. That this effedf Ihould be more ftnfible when the eye is covered with the hand, is owing, he obferves, to the eye lids not being impervious to the light. But the enlarge¬ ment of the pupil does not enlarge the ficdci of vew, except in looking through a hole, as in this particular cafe ; and therefore perfons who are blind of one eye can derive no advantage from this circumftance. Be¬ 164 When one e>e is clo- fore we applaud the -wifdom of Providence in any part of the confutation of nature, we fiiculd be very fure that we do not miflake concerning the effedfs of that ■conftitution. A great deal has been written by GafTendi, Ue Clerc, Muffchenbrock, and Du Tour, concerning the place to which we refer an objeft viewed by one or both eyes. But the moil fatisfaftory account, of this matter that we have met with, the reader will find in Dr Wells’s EfiTay above quoted, which will teach any perfon how to fatisfy himfelf by experiment with re- fpedt to vifible pofition and vifible motion. § Of the /Ippearavce of Objefls fen through Media of different Forms. The va- For the more eafy fpprehenfion of what relates to rious ap this fubjedd, we fhail premife the five following parti- pearances culars, which either have been already mentioned, or feerfthnd ^°^ow h'001 what has been before laid down, media of I. That as each point of an objedb, when viewed different by the naked eye, appears in its proper place, and as forms that place is always to be found in the line in which the axis of a pencil of rays flowing from it enters the ted. ° eye, or elie in the line which Dr ‘Wells calls the com¬ mon axis ; we from htnee acquire an habit of judging the point to be fituated in that line : and, becaufe the mind is unacquainted with what refradtions the rays fufter before they enter the eye, therefore, in cafes where they are diverted from their natural courfc, by palling through any medium, it judges the point to be in that line produced back in which the axis of a pencil of rays flowing from it is fituated the inffant they enter the eye, and not in that it was in before refradtion. We (hall therefore, in what follows, fup- pole the apparent place of cm objedt, when feen thro’ a refracting medium, to be fomewheie in that line pro¬ duced back in which the axis of a pencil of ravs flow¬ ing from it proceeds after they have pafled through the mdium. 2. 1 hat we are able to judge, though imperfedily, of the diftance of an objedt by the degree of diver¬ gency, wherein the rays flowing from the fame point of the objedl enter the pupil of (he eye, in cafes where that divergency is coniiderable j but becaufe in what Plate CCCI.VMI, I C S» Part I. follows it will be necefifary to fuppofe an objedfc, when Appear- feen through a medium whereby its apnarent diftance Ob¬ is altered, to appear in fome determinate fituation, in thoughm” thofe cafes where the divergency of the rays at their ot- tom of a velfel may be feen when the veffel is filled with water, though it be fo placed with r'efpedt to the eye, that it cannot be feen when the veflcl is emp¬ ty. To explain this, let ABCD (fig. 6 ) reprefent a veiTcl, and let E be an objef.1 lying at the bottom of it. This objedt, when the veft'el is empty, will not be feen by an eye at F, becaufe HB, the upper part of the velfel, will obftrudt the ray F.H ; but when it is filled with water to the height GH, the rav EK being refradled at the furface of the water into the line KF, the eye at F fliail fee the objedt by means of that. In like manner, an objecl lituated in the horizon ,\n ohjetfl appears above its true place, upon account of the re~ fituated in fradlion of the rays which proceed from it in their paf- '^e horizon fage through the atmofphere of the earth. For, firft, if the objedl be fituated beyond the limits of the atmo- tru£ place, fphere, its rays in entering it will be refradled towards the iff* * Part I. Appear* ante of O’) jt<3s leen through JV/edia of differtTK Forms. riaie CCCLVlU. I67 An < bjedb fecn thro’ a pJar;e me idiun. ap¬ peals 1 !tar. jer and Ihrighter jthan feen jby the na¬ ked eye. OPT the perpendicular; that is, towards a line drawn from the point where they enter, to the centre of the earth, which is the centre of the atmofphere : and as they p;.fs on, they will be continually refracled the fame way, becaufe they are all along entering a denfer part, the centie of whofe convexity is Rill the fame point ; upon which account the line they deferibe will be a curve bending downwards : and therefore none of the rays that come from that object can enter an eye upon the furf ee of the earth, except what enter the atmo- fphere higher than they need (o do if they could come in a right line from the object : confequently the ob¬ ject muft appear above its proper place. Secondly, if the object be placed within the atmofphere, the cafe is ftill the fame ; for the rays which flow from it mull continually enter a denfer medium whofe centre is below the eye ; and therefore being refracted to¬ wards the centre, that is, downwards as before, thofe which enter the eye muft neceft'arily proceed as from feme point above the object; wherefore the object wall appear above its proper place. From hence it is, that the fun, moon, and flats, ap¬ pear above the horizon, when they are juft below it; and higher than they ought to do, when they are above it : Likewife diftant hill-, trees, See. feem to be high¬ er than they are. Further, the lower theft? objects are in the horizon, the greater is the obliquity with which the rays which flew from them enter the atmofphere, or^pafs from the rnrei into the dtnfer parts of it; and therefore they appear to be the more elevated by refraction : upon which recount the lower parts of them are apparently more elevated than the other. This makes their upper and under parts feem nearer than they are;. as is evi¬ dent from the fun and moon, which appear of an oval form when they are in the horizon, their horizontal diameters appearing of the fame length they would do if tne rays fufl'ered no refraction, while their vertical ones are fliortened thereby. Prop. II, An objeft fern through a medium ter¬ minated by plane and parallel furfaces, appears nearer, brighter, and larger, than with the naked eye. For inftance, let AB (fig. 7.) be the objeft, CDEF the medium, and GH the pupil of an eye, which is here drawn large to prevent confufion in the figure. And, ift, let RK, IFL, he two rays proceeding from .the point R, and entering the denfer medium at K and L t thefe rays will here by refradiion he made to diverge lefs, and to proceed afterwards, fuppofe in the lines Ka, 1LI> s at a and b, where they pafs out of the denfer medium, they will be as much refrac¬ ted the contrary way, proceeding in the lines id, parallel to their firft directions. Produce thefe lines back till they meet in e : this will be the apparent place of the point R; and it is evident from the fr- gu.e, that it muft be nearer the eye than that point; and becaufe the fame is true of all ether pencils flow¬ ing from the objeft AB, the whole will be feen in the fit nation/^, nearer to the eye than the line AB. 2d, As the rays RK, RL, would not have entered the eye, but have pa fled by it in the direftions Kr, L,t, had they not been refrafted in pafling through the medium, the chjeff appears brighter. 3d, The rays AA, Bi, will be reiratted at />and i into the lefs con- verging lines il, and at the other furfr.ee into / M, I s. /M, parallel to Ah and Bi produced ; fo that the ex- Appey- tremities of the objeft will appear in the lines Mi, aP M/ produced, viz. in f and v, and under as large an \hrough angle fVlgy as the angle AyR under which an eye Media of at q would have feen it had there been no medium in- different terpofed to refradt the rays; and therefore it appears * o.m3. ^ larger to the eye at GH, being ieen through the in- terpofed medium, than otherwife it would have done. But it is here to he obferved, that the nearer the point e appears to the eye on account of the refradlion of the rays RK, RL, the fhorter is the image /jg, be¬ caufe it is terminated by the lines Mf and M g, upon which account the objedl is made to appear lefs ; and therefore the apparent magnitude of an objerit is not much augmented by being feen through a medium of this form. Farther, it is apparent from the figure, that the ef- fe£l of a medium of this form depends wholly upon its thicknefs; for the diftance between the lines Rr and ec, and confecpiently the diftance between the points e and R, depends upon the length of the line Ktf." Again, the diftance between the lines AM and y’M depends on the length of the line /j/J*; but both Km and kb depend on the diftance between the iurfaces CE and DF, and therefore the dfeft of this medium de¬ pends upon its thicknefs. Prop. III. An objeft feen through a convex lens, appears larger, brighter, and more diftaat, than with the naked eye. To illuftrate this, let AB (fig. 8.) be the objeef, Seen thro" CD the lens, and EF the eye. 1. From A and B,.thea convex extremities of the objerit, draw the lines AYr, BXr, ^ens>^H p croffing each ocher in the pupil of the eye ; the an^e brighter" * ArB comprehended between thefe lines, is the angle and more under which the objetf would be feen with the naked diftant; eye. But by the interpofition of a lens of this form, whofe property it is to render converging rays more fo, the rays AY and BX will he made to crofs each other before they reach the pupil. There the eye at E will not perceive the extremities of the objedl by means of thefe rays (for they will pafs.it without entering), but by feme others which muft fall without the points Y and X, or between them ; but if they fall between them, they will be made to concur fooner than they themfelves would have done ; and therefore, if the ex¬ tremities of the objedf could not be feen by them, it will much Lfs be feen by thefe. It remains therefore, th'.t the rays which will enter the eye from the points A and B after refraction, muft fall upon the lens without the points Y and X ; let then the rays AO and BP be fuch. Thefe after refraction entering the eye at r, the extremities of the object will he feen in the lines rQ^/F, produced, and under the optic angle Qg-T, which is larger than ArB, and therefore the. apparent magnitude of the object will be increafed. 2. Let GHI be a pencil of rays flowing from the point; G ; as it is the property of this lens to render diver¬ ging rays lefs diverging, parallel, or converging, iti is evident that fome of thofe rays, which would pro¬ ceed on to F and E, and mifs the eye, were they to fuffer no refraCtion in pafling through the lens, will, now enter it; by which means the objeCt will appear brighter. 3. As to the apparent diftance of the ob¬ jeCt, that will vary according to the fituation of it withv refpeCt to the focus of pavaliel rays of the lens,; 1. The n 3^ .Appear¬ ance of Ob¬ jects feen through' Me-ha of different Forms. Plate ' eccnvm. OPT t. Then, 1st tis fuppofe tlie objeft placed fo much nearer the lens than its focus of parallel rays, that the refra&ed rays KE and LF, though rendered lefs di~ verging by pafling through it, may yet have a consi¬ derable degree of divergency, fo that we may be able to form a judgment of the diftance of the objeft there¬ by. In this cafe, the objett ought to appear where EK, FL, produced back concur; which, becaufe they diverge lefs than the rays GH, GI, will be beyond G, that is, at a greater diftance from the lens than the objed is. But becaufe both the brightnefs and magnitude of the objed will at the fame time be aug¬ mented, prejudice will not permit us to judge it quite fo far off as the point where thofe lines meet, but lomewhere between that point and its proper place. 2. Let the objed be placed in the focus of parallel lays, then will the rays KE and LF become parallel; and though in this cafe the objed would appear at an jmmenfe diftance, if that diftance were to be judged of by the diredion of the rays KE and LF, yet upon- account of the brightnefs and magnitude of it, we (hall not think it much farther from us than if it were feen by the naked eye. 3. If the objed be fituated be¬ yond the focus of parallel rays, as in BA (iig. 9.), the rays flowing from thence and falling upon the lens CD, will be colleded into their refpedive foci at a and 3, and the intermediate points m, n, See. and will there form an image of the objed AB ; and after Crofting each other in the feveral points of it, as ex- prefled in the figure, will pafs on diverging as from a real objed. Now if an eye be fituated at c, where Ac, Be, rays proceeding from the extreme points of the objed, make not a much larger angle AcB, than they would do if there were no lens interpofed, and the rays belonging to the fame pencil do not converge fo much as thofe which the eye would receive if it were placed nearer to a or b, the objed upon tllefe accounts appearing very little larger or brighter than with the naked eye, is feen nearly in its proper place; but if the eye recedes a little way towards a b, the objed then appearing both brighter and larger, feems to approach the lens : which is an evident proof of what has been fo often aflerted, •viz. that we judge of the diftance of an objed in fome meafure by its bright- refs and magnitude ; for the rays converge the more the farther the eye recedes from the lens ; and there¬ fore if we judged of the diftance of the objed by the diredion of the rays which flow from it, we ought ill this cafe to conceive it at a greater diftance, than when the rays were parallel, or diverged at their entrance in¬ to the eye. That the objed fliould feem to approach the lens in this cafe, was a difficulty that exceedingly puzzled the learned Barrow, and which he pronounces infupe- rable, and not to be accounted for by any theory we have of vifion. Molineux alfo leaves it to the folution of others, as that which will be inexplicable, till a more intimate knowledge of the vifive faculty, as he expref- fes it, be obtained by mortals. i hey imagined, that feeing an objed appears far¬ ther off, the lefs the rays diverge which fall upon the eye, if they ffiould proceed parallel to each other, it •ought to appear exceeding remote ; and if they fhould converge, it ffiould then appear more diftant ftill: the reafon of this wasj becaufe they looked upon the ap- N~ 34B* ICS. Parti, parent place of an objed, as owirtg only to the dirtc- Appear- tion of the rays whatever it was, and not at all to itsa?c^0^.^ apparent magnitude or fplendor. ^throueh1 Perhaps it may proceed from our judging of the Media of diftance of an objed in fome meafure by its tnagni- different tude, that that deception of fight commonly obferved Form3- . by travellers may arife ; viz. that upon the firft ap- ’ J pearance of a building larger than ufual, as a cathedral church, or the like, it generally feema nearer to them, than they afterwards find it to be. jg. Pp.ob. IV. If an objed be placed farther from a In certaia convex lens than its focus of parallel rays, and the eye circum- be fituated farther from it on the other fide than t^e objea^ccrt place where the rays of the feveral pencils are colled-thn>tigh a ed into their refpedive foci, the objed appears in-convex lenj verted, and pendulous in the air, between the eye and aPPear3 !n’ ,, , r J verted and the lens. . pendulous To explain this, let AB (ng. 9.) reprelent the ob- U1 theair, jed, CD the lens; and let the rays of the pencil ACD be colleded in a, and thole of BCD in b, forming there an inverted image of the objed AB, and let the eye be placed in F : it is apparent from the figure, that fome of the refraded rays which pTs through each point of the image will enter the eye as from a real objed in that place; and therefore the objed AB will appear there, as the propofition ailerts. But we are fo little accuftomed to fee objeds in this manner, that it is very difficult to perceive the image with one eye ; but if both eyes are fituated in fuch a manner, that rays flowing from each point of the image may enter both, as at G and H, and we dired our optic axes to the image, it is eafy to be perceived. If the eye be fituated in a or b, or very near them on either fide, the objed appears exceedingly confufed, viz. if at the rays which proceed from the fame point of the objed converge fo very much, and if at e, they diverge fo much, that they cannot be colleded together upon the retina, but fall upon it as if they were the axes of fo many diftind pencils coming thro’ every point of the lens ; wherefore little more than one fingle point of the objed is feen at a time, and that appears all over the lens ; from whence nothing but confufion arifes. „ If the lens be fo large that both eyes may be ap¬ plied to it, as in h and k, the objed will appear double; for it is evident from the figure, that the rays which enter the eye at h from either extremity of the objed A or B, do not proceed as from the fame point with that from whence thofe which enter the other at k feem to flow; the mind therefore is here deceived, and looks upon the objed as fituated in two different places, and therefore judges it to be double. ^ Prop. V. An objed feen through a concave lens An obj«<5 appears nearer, fmaller, and lefs bright, than with the through a naked eye. concave Thus, let AB (fig. 10.) be the objed, CD the pu- pil of an eye, and EF the lens. Now, as it is the dialler,aD<3 property of a lens of this form to render diverging lefs bright rays more fo, and converging ones lefs fo, the diver-than ging rays GH, GI, proceeding from the point G, ^na6 will be made to diverge more, and fo to enter the eye * as from fome nearer pointy ; and the rays AH, BI, which converge, will be made to converge lefs, and to enter the eye as from the points a and b ; where¬ fore the objeds *wiU appear in the fituation agh. Ids and Part T. O P F Reflexion and nearer than without the lens. Farther, as the of Light. ray8 -which proceed from G are rendered more diver- L * ging, fome of them will be made to pafs by the pu¬ pil of the eye, which otherwife would have entered it, and therefore each point of the objedt will appear lefs bright. Prop. VI. An objedt feen through a polygonous glafs, that is, fuch as is terminated by feveral plain Sur¬ faces, is multiplied thereby. Plate For inftance, let A (hg. n). be an objedt, and BC CCCLVIII.J polygonous glafs terminated by the plain furfaces BD, DE, &c. and let the fituation of the eye F be fuch, that the rays AB being refradted in pafiing through the glafs, may enter it in the diredtion BF, and the rays AC in the diredtion CF. Then will the eye, by means of the former, fee the objedt in G, and by the latter in H ; and by means of the rays A I, the objedt will appear alfo in its proper fitua¬ tion A. Sect. III. Of the RefleRion of Light. 171 When a ray of light falls upon any body, however Some por- tranfparent, the whole of it never pafles through the al\va°fbut fome part is always driven back or refledted fiedkdfrom from it; and it is by this refiedted light that all bodies tranfparent which have no light of their own become vifible to us. fcodies. Of t]iat part of the ray which enters, another part is alfo refledted from the fecond furface, or that which is fartheft from the luminous body. When this part arrives again at the firlt furface, part of it is refledted back from that furface } and thus it continues to be refledted between the two furfaces, and to pafs back¬ wards and forwards within the fubftance of the me¬ dium, till fome part is totally extinguifhed and loft. Befides this inconfiderable quantity, however, which is loft in this manner, the fecond furface often refledts much more than the firft; infomuch that, in certain po- fitions, fcarce any rays will pafs through both Tides of the medium. A very confiderable quantity is alfo un¬ accountably loft or extinguifhed at each rtfledting fur¬ face ; infomuch that nobody, however tranfparent, can tranfmit all the rays which fall upon it; neither, tho’ it be ever fo well fitted for refledtion, will it refledt them all. § I. Of the Cavfe of ReJJedion. The refleftion of light is by no means fo eafily ac¬ counted for as the refradlion of the fame fluid. This property, as we have feen in the laft fedtion, may be accounted for in a fatisfadtory manner by the fuppo- fition of an attradfive power diffufed throughout the medium, and extending a very little way beyond it; but with regard to the refledlion of light, there feems to be no fatisfadtory hypothefis hitherto invented. Of the principal opinions on this fubjedt Mr Rowning hath given us the following account. I. It was the opinion of philofophers, before Sir 172 Ifaac Newton difeoveted the contrary, that light is notleflec- refle&ed by impinging upon the folid parts of bodies, ted by im- But that it is not fo, is clear for the following rea- pir.pinjr onfoilS. the folid ;t js not refie&ed at the firft furface of a Eafthe°"body fey imP'nRing againft it. firftfaiface, tor it is evident, that, in order to the due and Vol.XIII. Parti. ICS. $05 regular refledfion of light, that is, that the refledfed rays fhould not be difperfed and fcattered one from an-Re e lon* other, there ought to be no rafures or unevennefs in the refledfing furface large enough to bear a fenfible proportion to the magnitude of a ray of light; be- caufe if the furface abounds with fuch, the refledted rays will rather be fcattered like a parcel of pebbles thrown upon a rough pavement, than refledled with that regularity with which light is obferved.to be from a well polifhed furface. Now thofe furfaces, which to our fenfes appear perfedlly fmooth and well poliftied, are far from being fo; for to polifh, is no other than to grind off the larger eminences and protuberances of the metal with the rough and fnarp particles of fand, emery, or putty, which muft of neceffity leave behind them an infinity of rafures and fcratches, which, though inconfiderable with regard to the former roughneffes, and too minute to be difeerned by us, muft neverthe- lefs bear a large proportion to, if not vaftly exceed, the magnitude of the particles of light. Secondly, it is not refledted at the fecond furface " by impinging againft any folid particles. That it is not refledted by impinging upon the folid particles which conftitute this fecond furface, is fuffi- ciently clear from the foregoing argument; the feconi furfaces of bodies being as incapable of a perfedt polifli as the firft : and it is farther confirmed from hence, viz. that the quantity of light refledted differs accord¬ ing to the different denfity of the medium behind the body. And that it is not refledted by impinging up¬ on the particles which conftitute the furface of the medium behind it, is evident, beeaufe the ftrongeft re¬ fledtion of all at the fecond furface of a body, is when there is a vacuum behind it. This therefore wants no faither proof. 174 II. It has been thought by fome, that it is refledted at the firft furface of a body, by a repulfive T°rce five f0rCe • equally diffufed over it; and at the fecond, by an at- tradtive force. 'J75 1. If there be a repulfive force diffufed over the Objected furface of bodies that repels rays of light at all times,to* then, fince by increafing the obliquity of a ray we di- minifti its perpendicular force (which is that only whereby it muft make its way through this repulfive force), however weakly that force may be fuppofedto act, rays of light may be made to fall with lo great a degree of obliquity on the refledtirtg furface, that there ft'all be a total refledtion of them there, and not one particle of light be able to make its way through: which is contrary to obfervation ; the refledtion of light at the firlt furface of a tranfparent body being never total in any obliquity whatever. The hypothefis therefore in this particular muft be falfe. 2. As to the reflection at the fecond furface by the . • " A. f i Vf5" attradtive force of the body ; this may be confidered t n(;e lu^, in two refpedts : firft, when the refledtion is total; p0fc,l; fecondly, when it is partial. And firft, in cafes where the refledtion is total, thd caufe of it is undoubtedly that fame attradtive force by which light would be refradted in palling out of the fame body. This is manifeft from that analogy which is obfervable between the refledtion of light at this fecond furface, and its refradtion there. For otherwife, what can be the reafon that the total re¬ fledtion Ihould begin juft when the obliquity of the in- Q q cident 3o6 O P T Caufe of cident ray> at its arrival at the fecond furface, is fuch Reflexion. that. the refrafted angle ought to be a right one ; or W“~y when the ray, were it not to return in reflection, ought to pafs on parallel to the furface, wjthoot going from it ? For in this cafe it is evident, that it ought to be returned by this very power, and in fuch man- ncr that the angle of refleaion (hall be equal to the angle of incidence ; juft as a ftone thrown obliquely from the earth, after it is fe far turned out of its courfe by the attra&ion of the earth, as to begin to move horizontally, or parallel to the furface of the earth, is then by the fame power made to return in a curve fimilar to that which is defcribed in its departure from the earth, and fo falls with the fame degree of obliquity that it was thrown with. *77 gutj fecondly, as to the refleaion at the fecond fur- C face, when it is partial; an attraaive force uniformly fpread over it, as the maintainers of this hypothefis conceive it to be, c?.n never be the caufe thereof. Becaufe it is inconceivable, that the fame force, aaing in the fame circumftances in every refpea, can fome- times reflea the violet coloured rays and tranfmit the red, and at other times reflea the red and tranfmit the violet. We have ftated this objeaion, becaufe it is our bu- finefs to conceal no plaufible opinions: but it is not valid; for in each colour, the refleaion takes place at that angle, and no other, where the refraaion of that ray would make it parallel to the pofterior furface. This partial refleaion and refraaion is a great dif¬ ficulty in all the attempts which have been made to give a mechanical explanation of the phenomena of optics. It is equally a defideratum in that explana¬ tion which was propofed by Huygens, and, fince his time, revived by Euler, by means of the undulations of an elaftic fluid, although a vague confideration of undulatory motions feems to offer a very fpecious ana¬ logy. But a rigid applicacion of fuch knowledge as we have acquired of fuch motions, will convince any unpre¬ judiced mathematician, that the phenomena of undula¬ tion are effentially diflimilar to the phenomena of light. The inflexion of light, and its refraftion, equally demonftrate that light is adted on by moving forces in a dire&ion perpendicular to the furface; and it is equally dtmonftrable that fucb forces muft, in / proper circumftances, produce reflexions precifely fuch as we obferve. The only difficulty is to ffiow how there can be forces which produce both reflec¬ tion and refraXion, in circumftances which are fimilar. The faX is, that fuch effeXs are produced : the firft logical inference is, that with refpeX to the light which is refleXed and that which is refraXed, the eircumftances are not fimilar; and our attention fliouM be direXed to the difcovery of that diffimilarity. All the phenomena of combined refleXion and refraXion Ihould be examined and claffed according to their ge¬ nerality, not doubting but that thefe points of re- femblance will lead to the difcovery of their caufes. Now the experiments of Mr Bouguer fhow that bo¬ dies differ extremely in theii powers of thus fepa- rating light by refleXion and refraXion, fome of them refleXing much more at a given angle than others. It is not therefore a general property of light to be partly refleXe and partly refraXed, but a di/linffive pro¬ perty of di/erent bodiesj and fince we fee that they I C S. Part T. poffefs it in different degrees, we are authorifed to con- ("aufeof elude that fome bodies may want it altogether. We may therefore expeX fome fuccefs by confidering how 11 bodies are affeXed by light, as well as how light is affeXed by bodies. Now, in all the phenomena of the material world we find bodies conneXed by mu¬ tual forces. We know no cafe where a body A tends towards a body B, or, in common language, is attraX- ed by it, without, at the fame time, the body B tend¬ ing towards A. This is obferved in the phenomena of magnetifm, eleXricity, gravitation, corpufcular at- traXion, impulfe, &c. We fhould therefore conclude from analogy, that as bodies change the motion of light, light alfo changes the motion of bodies ; and that the particles near the furface are put into vibra- I7g tion by the paffage of light through among them.The object Suppofe a parcel of cork-balls all hanging as pendu-1*011 obvi»» lums in a fymmetrical order, and that an eleXrifiedted* ball paffts through the midft of them; it is very eafy to ffiow that it may proceed through this affemblage in various direXions with a fiauated motion, and without touching any of them, and that its ultimate direXion will have a certain inclination to its primary direXion, depending on the outline of the afl'emblage, jull as is obferved in the motion of light; and, in the mean time, the cork-balls will be varioufly agi¬ tated. Juft fo muft it happen to the particles of a tranfparent body, if we fuppofe that they aX on the particles of light by mutual attraXions and repui- ifions. An attentive confideration of what happens here will ffiow us that the fuperficial particles will be much more agitated than the reft ; and thus a ftratum be produced, which, in any inftant, will aX on thofe particles of light which are then approaching them in a manner different from that in which they will aX on fimilarly fituated particles of light, which come into the place of the firft in the following moment, when thefe aXing particles of the body have (by their motion of vibration) changed their own fituation. Now it is clearly underftood, that in all motions of vibration, fuch as the motions of pendulums, there is a moment when the body is in its natural fituation, as when the pendulum is in the vertical line. This may happen in the fame inftant in each atom of the trans¬ parent body. i he particles of light which then corns within the fphere of a ion may be wholly refleXed j in the next moment, particles of light in the veiy fituation of the firft may be tefraXed. Then will arife a feparation of light; and as this will depend on the manner in which the particles ot bodies are agitated by it during its paffage, and as this again will depend on the nature of the body, that is on the law of aXion of thofe forces which con* neX the particles with each other, and with the particles of light, it will be different in different bo¬ dies. But in all bodies there will be this general re- femblance, that the feparation will be molt copious in great obliquities of incidence, which gives the re- pulfive forces more time for aXion, while it dkni- nifhes the perpendicular force of the light. Such a reftmblance between the phenomena and the legiti¬ mate confequences of the affumption (the agitation of the parts of the body), gives us fome authority lor affi^ning this as the caufe j nor can the affump.- tioa OPTICS . Plate CCCPV5H . t .'frr*** //CtAZfevtjfa/l*? '/+■ o / Parti. 0 ,P,.T. Caufe of tion be called gratuitous. To fuppofe that the par- Refledion. ticle8 0f the tranfp trent body are not thus agitated, would ^ -v a moft. gratuitous contradiction of a law of nature to which we know no other exception. Thus the objedtion raifed in n° 132. is obviated, becaufe the refieftion and refra&ion is not here con¬ ceived as fxmultaneous, but as fucceflive. 179 HI. Some, being apprehenfive of the infufFiciency An'thef of a repuifive ang attraftive force diffufed over the fur- Hypo'.he- faceg of bod;C8 and aaing uniformly, have fuppofed, that, by the adtiou of light upon the furface of bodies, the matter of thefe bodies is put into an undulatory motion ; and that where the furface of it is fubfiding light is tranfmitted, and in thofe places where it is rifing light is refle&ed. But to overlook the objec¬ tions which we have juft made to this theory of un¬ dulation, we have only to obferve, that, were it ad¬ mitted, it Teems not to advance us one jot farther; for in thofe cafes, fuppofe where red is reflefted and violet tranfmitted, how comes it to pafs that the red impinges only on thofe parts when the waves are ri- 1S0 aud ttie v"lolet wlien they are fabfiding ? Sir I. New- IV. The next hypothefis that we fhall take notice ton’s Hy- ef} js that remarkable one of Sir Ifaac Newton’s fits ,$>othefis; 0f eapy rtfledfion and tranfmifiion, which we (hall now explain and examine. That author, as far as we can apprehend his meaning in this particular, is of opinion, that light in its paffage from the luminous body, is difpofed to be alternately refleded by and tranfmitted through any refra&ing furface it may meet with; that thefe dif- pofitions (which he calls Jits of eafy refleftion and eafy tranfmijfon) return fucceflively at equal intervals; and that they are communicated to it at its firll emiflion out of the luminous body it proceeds from, probably by fome very fubtle and elaftic fubftance diffufed through the univerfe, and that in the follow¬ ing manner. As bodies falling into water, or palling through the air, caufe undulations in each, fo the rays of light may excite vibrations in this elaftic fubftance. The quicknefs of which vibrations depending on the elafticity of the medium (as the quicknefs of the vi¬ brations in the air, which propagate found, depend folely on the elafticity of the air, and not upon the quicknefs of thofe in the founding body,), the motion of the particles of it may be quicker than that of the rays: and therefore, when a ray at the inftant it impinges upon any furface, is in that, part of a vibration of this rlaftic fubftance which confpires with its motion, it may be eafily tranfmitted ; and when it is in that part of a vibration which is contrary to its motion, it angle of incidence. This is found by experiment to tlon. be the cafe, and befides may be demonftrated mathe¬ matically from the laws of percufiion in bodies per¬ fectly elaftic. The axiom therefore holds good in every cafe of reflection, whether it be from plane fur- faces or fpherical ones, and that whether they are convex or concave; and hence the feven following pro- pofitions relating to the reflection of light from plane and fpherical furfaces may be deduced. I. Rays of light reflected from a plane furface have the fame degree of inclination to one another that their refpetive incident ones have.— For the angle of refieftion of each ray being equal to that of its refpec- tive incident one, it is evident, that each reflected ray will have the fame degree of inclination to that portion of the furface from whence it is reflefted that its incident one lias: but it is here fuppofed, that all thofe portions of furface from whence the rays are re¬ flefted, are fituated in the fame plain; confequently the reflefted rays will have the fame degree of inclination to each other that their incident ones have, from what¬ ever part of the furface they are reflefted. II. Parallel rays reflefted from a concave furface are rendered converging.—To illuftrate this, let AF, CD, EB, (fig. 1.) reprefent three parallel rays Hate falling upon the concave furface FI3, whofe centre is CCCl.lX. C. To the points F and B draw the lines CF, CB; y thefe being drawn from the centre, will be perpendi- rular to the furface at thofe points. The incident ray from a con- CD alfo palling through the centre, will be perpe-ndi- cavc far- cular to the furface, and therefore will return after re-*ace’ fleftion in the fame line ; but the oblique rays AF Q_ q 2 and 30S Laws of Refle&ion O P T and EB will be refle&ed Into tbe-lines FM and BM, fituated on ihe contrary fide of their refpe&ive per¬ pendiculars CF and CB. They will therefore proceed converging after refk&ion towards fome point, as M, in the line CD. III. Converging rays falling on the like furface, are made to converge more.--For, every thing re¬ maining as above, let GF, HB, be the incident rays. Now, becaufe thefe rays have larger angles of inci¬ dence than the parallel ones AF and EB in the fore¬ going cafe, their angles of refle6tion will alfo be larger than thofe of the others; they will therefore converge after refle&ion, fuppofe in the lines FN and BN, ha¬ ving their point of concourfe N farther fro'a the point C than M, that to which the parallel rays AF and EB converged to in the foregoing cafe ; and their pre- cife degree of convergency will be greater than that wherein they converged before reflexion. IV. Diverging rays falling upon the like furface, are, after reflexion, parallel, diverging, or converging. Jf they diverge from the focus of parallel rays, they then become parallel; if from a point nearer to the furface than that, they will diverge, but in a fefs de¬ gree than before refledlion ; if from a point between that and the centre, they will converge r*'cr reflec¬ tion, and that to foine point on the contrary fide of the centre, but fituated farther from it than the point from which they diverged. If the incident ravs di¬ verge from a point beyond the centre, the refleftcd ones will converge to one on the other fide of it, but nearer to it than the point they diverged from ; and if they diverge from the centre, they will be reflected thither again. 1. Let them diverge in the lines MF, MB, pro¬ ceeding from M, the focus of parallel rays ; then, as the parallel rays AF and EB were refledfed into the lines FM and BM (by Prop. II.), thefe rays will now on the contrary be reflected into them. 2. Let them diverge from N, a point nearer to the furface than the focus of parallel rays, they will then be refleded into the diverging lines EG and BH which the incident rays GF and HB defcribed that were (hewn to be refleded into them in the fore¬ going propofition ; but the degree wherein they di¬ verge will be lefs than that wherein they diverged be¬ fore refled ion. 3. Let them proceed diverging from X, a point be¬ tween the focus of parallel rays and the centre ; they then make lefs angles of incidence than the rays MF and MB, which became parallel by refledion : they will confequently have lefs angles of refledion, and proceed therefore converging towards fome point, as Y; which point will always fall on the Contrary fide of the centre, becaufe a refleded ray always falls on the contrary fide of the perpendicular with refped to that on which its incident one falls ; and of con- fequence it will be farther diftant from the centre than X. 4. If the incident ones diverge from Y, they will, after refledion, converge to X ; thofe which were the incident rays in the former cafe being the refleded ones in this. And laftly, 5. If the incident rays proceed from the centre, they fall in with their refpedive perpendiculars; and for that reafon are refleded thither again. I C -S. PartT. V. Parallel] rays refleded from a convex furface Laws of are rendered diverging.—For, let AB, GD, EF, R-eflen-i (fig. 2.) be three parallel rays falling upon the con- "p,"ue ' * vex furface BF, whofe centre of convexity is C, and CCCLIX. let one of them, viz. GD, be perpendicular to the 184 furface. Through B, D, and F, the points of reflec-Froipafcon' tion, draw the lines CV, CG, and CT ; which, be-vex u”AUi* caufe they pafs through the centre, will be perpendi¬ cular to the furface at thefe points. The incident ray GD being perpendicular to the furface, will re¬ turn after refledion in the fame line, but the oblique ones AB and EF in the lines BK and FL, fituated on the contrary fide of their refpedive perpendiculars BV and FT. They will therefore diverge, after reflec¬ tion, as from fome point M in the line GD produced and this point will be in the middle between D and C. VI. Diverging rays refleded from the like furface are rendered more diverging—For, every thing re¬ maining as above, let GB, GF, be the incident rays. Thefe having larger angles of incidence than the pa-^ rallel ones AB and EF in the preceding cafe, their angles of refledion will alfo be larger than theirs : they will therefore diverge after refledion, fuppofe in the lines BP and FQ^ as from fome point N, farther from C than the point M ; and the degree wherdin they will diverge will be greater than that wherein they diverged before refledion. VII. Converging rays refleded from the like fur¬ face, are parallel, converging, or diverging. If they tend towards the focus of parallel rays, they then be¬ come parallel ; if to a point nearer the furface than that, they converge, but in a lefs degree than before refledion ; if to a point between that and the centre, they will diverge after refledion, as from fome point on the contrary fide of the centre, but fituated far¬ ther from it than the point they converged to : if the incident rays converge to a point beyond the centre, the refleded ones will diverge as from one on the con¬ trary iide of it, but nearer to it than the point to which the incident ones converged ; and if the inci¬ dent rays converge towards the centre, the refleded ones will proceed as from thence. x. Let them converge in the lines KB and LF, tending towards M, the focus of parallel rays ; then, as the parallel rays AB, EF were refleded into the lines BK and FL (by Prop. V.), thofe rays will now on the contrary be refleded into them 2. Let them converge in the lines PB, QF, tending towards N a point nearer the furface than the focus of parallel rays, they wull then be refleded into the con¬ verging lines BG and FG, in which the rays GB, GF proceeded that were fhown to be refleded into them by the laft propofition : but the degree wherein they will converge will be lefs than that wherein they converged before refledion. 3. Let them converge in the lines RB and pro-* ceeding towards X, a point between the focus of pa¬ rallel rays and the centre: their angles of incidence will then be lefs than thofe of the rays KB and LF, which became parallel after refledion : their angles of refledion will therefore be lefs ; on which account they muft neceflarily diverge, fuppofe in the lines BH and FI, from fome point, as Y ; which point (by Prep. IV.) will fall on the contrary fide of the centre Part 1. Laws of Reflexion. OPT centre with refpea to X, and will be farther from it c s. verge, the focus of the reflefled rays will be at the fame ^^ than that. v 4. If the incident rays tend towards. 1, the reflec- ted ones will diverge as from X; thofewhrchwere the m- cident ones in one cafe being the refkaed ones in .he 0tlier Laftly, if the incident rays converge towards.the centre, they fall in with their lars; on which account they proceed after reflection as from the centre. ^ t , . . , .prp We have already obferved, that in fome cafes there is a very great reflection from the fecond furface ot a tranfparent body. The degree of inclination neceffary to caufe a total reflection of a ray at the fecond fur- face of a medium, is that which requires that the re- frafted angle (fuppofing the ray to pals out there) fhould be equal to or greater than a right one ; and confequently it depends on the refraftive power of the medium through which the ray paff.s, and is there¬ fore diff rent in different media. When a ray palfes through glafs furrounded with air, and is inclined to its fecond furface under an angle of 42 degrees or more, it will be wholly reflefted there. For, as 11 is to 17 (the ratio of refraftion out of glafs into air), fo is the line of an angle of 42 degrees to a fourth num¬ ber that will exceed the fine of a right angle. I'rom hence it follows, that when a ray of light arrives at the fecond furface of a tranfparent fubitance with as great or a greater degree-of obliquity than that which is neceffary to make a total reflcftion, it will there be all returned back to the firft : and if it proceeds to¬ wards that with as great an obliquity as it did towards the other (which it will do if the furfaces of the me- dium be parallel to each other), it will there be all re¬ flefted again, &c. and will therefore never get out but oafs from fide to fide, till it be wholly fuffocated and loll within the body.—From hence may ar.fe an obvious inquiry, how it comes to pafs, that light tail¬ ing very obliquely upon a glafs window from without, fhould be tranfmitted into the room. In anfwer to this it mull be confidered, that however obliquely a ray falls upon the furface of any medium whofe fades are parallel (as thofe of the glafs in a window are), it will fuffer fuch a degree of refraftion in entering there, that it (hall fall upon the fecond v/ith a lefs obliquity than that which is neceffary to caufe a total reflection. For intlance, let the medium be glals, as fuppofed in the prefent cafe 1 then, as 17 is to 11 (the ratio ot refraftion out of air into glafs), fo is the fine of the largeft angle of incidence with \yhich a tay can fall upon any furface to the fine of a lefs angle than that of total refleftion. And therefore, if the fides of the glafs be parallel, the obliquity with which a ray falls upon the firft furface, cannot be fo great, but that it (hall pafs the fecond without fuffering a total reflection there. When light paffes out of a denfer into a rarer me¬ dium, the nearer the fecond medium approaches the firft in denfity (or more properly in its refraftive power), the lefs of it will be refraMed in paffing from one to the other ; and when their refracting powers are equal, all of it will pafs into the fecond medium, ine re- The above propofitions mav be all mathematically ding pivpo-demonftrated in the foftowing manner, fition* de- pROP J. Of the reflection of rays from a plane fur- xn«nftrated c nuuheiuati- C tally. Plate 18 5 The prece “ When rays fall upon a plane furface, if they di- diftance behind the furface, that the radiant point is be- ^ fore it: if they converge, it will be at the fame diftance before the furface that the imaginary focus of the in¬ cident rays is behind it.” 'J his propofition admits of two cafes. Case 1. Of diverging rays. Dem. Let AB, AC, (fig. 3-) be two Merging y rays incident on the plain furface DE, the one perpen¬ dicularly, the other obliquely : the perpendicular one AB will he reflefted to A, proceeding as from fome point in the line AB produced ; the oblique one AC will be refleftcd into fome line as CF, fuch that the point G, where the line F G produced interfefts the line AB produced alfo, {hall be at an equal diftance from the furface DE with the radiant A. For the perpendicular CH being drawn, AC H and HCF will be the angles ^ incidence and refleftion ; which being equal, their complements ACB and FCE are fo too: but the angle BCG is equal to FCE, as being vertical to it: therefore in the triangles ABC and GbC the angles at C are equal, the fide BC is common, and the angles at B are alfo equal to each other, as being right ones ; therefore the lines AB and BG, which refpeft the equal angles at C, are alfo equal ; and con¬ fequently the point G, the focus of the incident rays AB, AC, is at the fame diftance behind the furface, that the point A is before it. £>. A. D. Case 2. Of converging rays. This is the coaverfe of the former cafe. For fuppo- fing FC and AB to be two converging incident rays,, CA and BA will be the reflefted ones (the angles of in¬ cidence in the former cafe being now the angles of re¬ fleftion, and vice verja), having the point A tor their focus ; but this, from what was demonftrated above, is at an equal diftance from the reflefting furface with the point G, which in this cafe is the imaginary focus of the incident rays FC and AB.. Obs. It is not here, as in the refraftion of rays * in paffing through a plane furface> where fome of the refracted rays proceed as from one paint, and fome as from another : but they all proceed after refleftion as from one and the fame point, however obliquely they may fall upon the furface ; for what is here demonftra¬ ted of the ray AC holds equally of any,other, as AI, , AK’ i r r The cafe of parallel rays incident on a plane lurface is included in this propofition : for iiv that cale we aie to fuppofe the radiant to be at an infinite diftance from the fuvface, and then by the propofition the focus of the rtflefted rays will be fo too ; that is, the rays will be parallel after refleftion, as they were before.^ Prop. II. Of the refleftion of parallel rays from a fpherical furface. “ When parallel rays are incident upon a fpherical furface, the tocus of the reflefted rays will be the middle point between the centre of convexity and the furface.” This propofition admits of two cafes. Case 1. Of parallel rays falling upon a convex furface. Dem.- Let AB, DH, (fig. 4.) reprefent two pa¬ rallel rays incident on the convex lurface BH, the one perpendicularly,the other obliquely; and let C be the centre of convexity; fuppofe FIE to be the reflefted ray. of the oblique incident one DH proceeding as front F, a. 3 k> OPT Laws of r point in the line AB produceJ. Through the point Reflection, ,jraw the line Cl, which will be perpendicular to 'r the furface at that point ; and the angles DHI and IHE, being the angles of incidence and reflection, will be equal. To the former of thefe, the angle HCF is equal, the lines AC and DH being parallel; and to the latter the angleCHF, as being vertical; wherefore the triangle CFH is ifofceles, and confequently the Tides CF and FH are equal: but fuppofing BH to vanifli, FH is equal to FB ; and therefore upon this fuppofi- tion FC and FB are equal, that is, the focus of the re- flefted rays is the middle point between the centre of convexity and the furface. <9. E. D. Case 2. Of parallel rays falling upon a concave fur¬ face. Kate Dem. Let AB, DH, (fig. 5.) be two parallel GCCLlX. rays incident, the one perpendicularly, the other ob¬ liquely, on the concave furface BH, whofe centre of concavity is C. Let BF and HF be the reflefted rays meeting each other in F; this will be the middle point between B and C. For drawing through C the per¬ pendicular CH, the angles DHC and FHC, being the angles of incidence and refledfion, will be equal, to the former of which the angle HCF is equal, as al¬ ternate ; and therefore the triangle CFH is ifofceles. Wherefore CF and FH are equal: but if we fuppofe BH to vanifli, FB and FH are alfo equal, and there¬ fore CF is equal to FB ; that is, the focal diftance of the refledted rays is the middle point between the cen¬ tre and the furface. E. D. Obs. It is here obfervable, that the farther the line DH, either in fig. 4. or 5. is taken from AB, the nearer the point F falls to the furface. For the farther the point H recedes from B, the larger the triangle CFH will become ; and confequently, fince it is always an ifofceles one, and the bafe CH, being the radius, is everywhere of the fame length, the equal legs CF and FH will lengthen ; but CF cannot grow longer iinlefs the point F approach towards the fur¬ face. And the farther H is removed from B, the fafter F approaches to it. This is the reafon, that whenever parallel rays are conhdered as refledled from a fpherical furface, the diUance of the oohque one from the perpendicular one ■is taken fo fmall with rcfpedf to the focal diftance of tnat furface, that without any phyfical error it may be ^ fuppofed to vanifli. Rcfleifled 1‘>0^ hence it follows, that if a number of parallel lays from ^ays> as AB, CD, EG-, &c. fall upon a convex fur- a Ipherical face, (as fig. 6.) and if BA, DK, the refledted rays of vernro^i" ones CD, proceed as from the point from the of the incident ones CD, EG, viz.DK, GL, 4ame point VV1^ proceed as from N, thole of the incident ones EG, III, as from O, &c. becaufe the farther the incident ones CD, EG, &c. are from AB, the nearer to the furface are the points F,/,/, in the line BF, from which they proceed after refledfion; fo that properly the foci of the refledted rays BA, DK, GL, 5:c. are not m the line AB produced, but in . curve line paf- fmg through the points F, N, O, &e. f he fame is applicable to the cafe of parallel rays refledted from a concave furface, as expreffed by the PO Rilnnn°rnthe ?ther halfof the where 1,V» are the incident rays; OF, Sf. Vf tuc refledted ones, mterfeding each other in the points ^ G S. Parti, X, Y, and F ; fo that the foci of thofe rays are not Laws of in the line FB, but in a curve paffing through thofe Rx^c<^:ioa' points 187 Had the furface BH in fig. 4. or 5. been formed by Ra%s the revolution of a parabola about its axis having its ceedm^™" focus in the point F, all the rays refledted from the from oue convex furface would have proceeded as from the point P°‘nt a,|d F, and thofe refledted from the concave would have a fallen upon it, however diftant their incident ones concave^ AB, DH, might have been from each other. For inlurface are the parabola, all lines drawn parallel to the axis makeailre®e^£(l angles with the tangents to the points where they cut^ om.0116 the parabola (that is, with the furface of the parabo-P°m ‘ la) equal to thofe which are made with the fame tan¬ gents by lines drawn from thence to the focus; there¬ fore, if the incident rays deferibe thofe parallel lines, the refledted ones will neceflarily deferibe thefe other, and fo will all proceed as from, or meet in, the fame point. Prop. III. Of the refledtion of diverging and con- verging rays from a fpherical furface. iS« “ When rays fall upon any fpherical furface, if they prof,or- diverge, the diilance of the focus of the refledted rays tional df. from the furface is to the diflance of the radiant pointftaace of from the fame (or, if they converge, to that of the^’sf”^"f imaginary focus of the indident rays), as the diftance S from a* of the focus of the refledted rays from the centre is to fpherkal the diltance of the radiant point (or imaginary focus^uri"aC€‘ of the incident rays) from the fame.” This propofition admits of ten cafes. Case i. Of diverging rays falling upon a convex furface. Dem. Let RB, RD (fig. 7.) reprefent two di- verging rays flowing from the point R as from a ra¬ diant, and tailing the one perpendicularly, the other obliquely, on the convex furface BD, whofe centre is C. Let DE be the refledted ray of the incident one RD, produce ED to F, and through R draw the line RH parallel to FE till it meets CD produced in H. Then will the angle RHD be equal to EDH the angle of refledtion, as being alternate to it, and therefore equal alfo to RDH which is the angle of incidence ; wherefore the triangle DRH is ifofceles, and confe¬ quently DR is equal to RH. Now the Hues ED and RH being parallel, the triangles FDC and RPIC are fimilar, (or, to exprefs it in Euclid’s way, the fides of the triangle RHC are cut proportionably, 2 Elem. 6.),: and therefore FD is to RH, or its equal RD, as CF to CR4 but BD vanifiling, FD and RD differ not from FB and RB: wherefore FB is to RB alfo, as Cl' to CR; that is, the diflance of the focus from the furface is to the diilance of the radiant point from the fame, as the diftance of the focus from the centre is to the diftance of the radiant from thence. 5>. E. D. Case 2. Of converging rays falling upon a concave furface. Dem. Let KD and CB be the converging inci¬ dent rays having their imaginary focus in the point R, winch was the radiant in the foregoing cafe. Then as RD was in that cafe refledled into DE, KD will in this be refledled into DF; for, fince the angles of incidence in both cafes are equal, as they are by being vertical, the angles of refledlion will be fo too ; fo that F will be the focus of the refledted rays : but it 5 -was Laws of Rcfledion. Parti. 0 p T was there demondrated, that FB is to RB as CF to CR; that is, the diilance of the focus from the fur- face is to the dittance (in this Ca(e) of the ima¬ ginary focus of the incident rays, as the diitance of the fo;:us from the centre is to the diitance of the ima¬ ginary focus of the incident rays from the fame. ^ E D. Case 3. Of converging rays falling upon a con¬ vex furface, and tending to a point between the focus of parallel rays and the centre. rlate Dem. Let BD (fig. 8.) reprefent a convex furface «CCL1X. whofe centre is C, and whofe focus of parallel rays is P; and let AB, KD, he two converging rays inci¬ dent upon it, and having their imaginary focus at R, a point between P and C. Now becaufe KD tends to a point between the focus of parallel rays and the centre, the refleAed ray DE will diverge from fome point on the other fide the centre, fuppofe F; as ex plained above (p. 308.) under prop. 7. Through D draw the perpendicular CD. and produce it to H; then will KDH and HDE be the angles of incidence and refle&ion, which being equal, their vertical ones RDC and CDF will be fo too, and therefore the vertex of the triangle RDF is bifeAed by the line DC: where¬ fore (3 El. 6.) FD and DR, or, BD vanishing, FB and BR are to each other as FC to CR ; that is, the diftance of the focus of the retteAed rays is to that of the imaginary focus of the incident ones, as the di¬ ftance of the "former from the centre is to the uiftance of the latter from the fame. ^ E. D. Case 4. Of diverging rays falling upon a concave furface, and proceeding from a point between the fo¬ cus of parallel rays and the centre. Dem. Let RB, RD, (fig. 8.) be the diverging rays incident upon the concave furface BD, having their radiant point in the point R, the imaginary focus of the incident rays in the foregoing cafe. Then as KD was in that cafe refleAed into DE, RD will now be refieAtd into DF. But it was there demon- ftrated, that FB and RB are to each other as CF to CR ; that is, the diftance of the focus is to that of the radiant as the diftance of the former from the centre is to the diftance of the latter from the fame.' 4b E. D. ' The angles of incidence and refleAion being equal, it is evident, that if, in any cafe, the refleAed ray be made the incident one, the incident will become the rtfkAed one ; and therefore the four following cafes may be conlidered refpeAively as the converfe of the four foregoing ; for in each of them the incident rays are fuppofed to coinc.de with the refleAed ones in the other. Or they may be demonftrated independently ©f them as follows. Case 5. Of converging rays falling upon a convex furface, and tending to a point nearer the furiace than tlie* focus of parallel rays. Dem. Let ED, RB (fig 7 ) be the converging rays incident upon the convex furface BD whole centre is C, and focus of parallel rays is P ; and let the imaginary focus of the in Lent rays be at F, a point between P and B ; and let DR be the refleAed ray From C and R draw the lines CH, RH, the one pafiing through D, the other parallel to FE. Then will the angle RHD be equal to HDE the angle of incidence^ as alternate to it j and therefore I c s. 311 equal to HDR, the angle of refleAion: wherefore the triangle HDR is ifofceles, and coniequently DR is equal to RIT. Now the lines FD and RH being parallel, the triangles FDC and RHC are fimilar; and therefore RH, or RD, is to FD as CR to Cb : but BD vanishing, RD and FD coincide with RB and FB, wherefore RB is to FB as CR to CF; that is, the diftance of the focus from the furface is to the diftance of the imaginary focus of the incident rays, as the diftance of the focus from the centre is to the diftance of the imaginary focus of the incident rays from the fame. 4b E. D- Case 6. Of diverging rays falling upon a concave furface, and proceeding from a point between the fo¬ cus of parallel rays and the furface. Dem. Let FD and FB reprefent two diverging rays flowing from the point F as a radiant, which was the imaginary focus of the incident rays in the foregoing cafe. Then as ED was in that cafe refleAed into DR, FD will be refitAed into DK (for the reafon men¬ tioned in Cafe 2.), fo that the refleAed ray will pro¬ ceed as from the point R : but it was demonftrated in the cafe immediately foregoing, that RB is to FB as CR to CF ; that is, the diftance of the focus from the furface is to that of the radiant from the fame, as the diftance of the former from the centre is 10 that of the latter from the fame. £KE.D. Case 7. Of converging rays falling upon a convex furface, and tending towards a point beyond the centre. Laws of Reftedtion. Dem. Let AB, ED (fig. 8.) be the incident rays tending to F, a point beyond the centre C, and let DK be the refleAed ray of the incident one ED. Then becaufe the incident ray ED tends to a point beyond the centre, the refleAed ray DK will proceed as from one on the contrary fide, fuppofe R; as ex¬ plained above under Prop. V1L Ihrough D draw the perpendicular CD, and produce it to H. Then will EDH aad HDK.be the angles of incidence and re¬ fleAion , which being equal, their vertical ones CDF and CDR will be fo too : coniequently the vertex of the triangle FDR is bifeAed by the line CD: where¬ fore, RD is to DF, or (3 Elem. 6.) BD vanifhing, RB is to BF as RC 10 CF; that is, the diftance of the focus of the refleAed rays is to that of the imaginary- focus of the incident rays, as the diftance ©f the former from the centre is to the diftance ot the latter from the fame. 4L E. D. Case 8. Of diverging rays falling upon a concave furiace, and proceeding from a point bey ond the cen¬ tre Dem. Let FB, FD, be the incident rays having their radiant in F, the imaginary focus of the incident rays in the foregoing cafe. Then as ED was in that cafe refleAed into DK, FD will now be refleAed into DRj.fo that R will be the focus of the refleAed rays. But it was demonftrated in the foregoing cafe, that RB is to FB as RC to CF.; that is, the diftance of tae focus of the refleAed rays from the furface is to the diftance of the radiant from the fame, as the di¬ ftance of the focus of the reflected rays from the cen¬ tre is to the diftauce of the radiant from thence. E. D. The two remaining cafes m:.y be confidered as the converfe of tnofe under Prop. il. (p.30^,3,o.j,becaufe the Plate CCCLIX. 312 o P T Laws nf the incident rays in thefe are the refledled ones in them; 'Reflection. or t]1Cy m3y demonftrated in the fame manner with 1" v the foregoing, as follows. Cask 9. Converging rays falling upon a convex fur- face, and tending to the focus of parallel rays, become parallel after reflection. Df.m. Let El), RB (fig. 7.), reprefent two con- ■verging rays incident on the convex furface BD, and tending towards F, which we wall now fuppofe to he the focus of parallel rays ; and let DR be the reflect¬ ed ray, and C the centre of convexity of the reflecting "furface. Through C draw the line CD, and produce it to H, drawing RH parallel to ED produced to F. Now it has been demonftrated (Cafe ;. where the in¬ cident rays are fuppofed to tend to the point Fj, that RB is to FB as RC to CF ; but F in this Cafe being fuppofed to be the focus of parallel rays, it is the middle point between C and B (by Prop. II.), and therefore FB and FC are equal; and confequently the two other terms in the proportion, u/'z RB and RC, muft be fo too; which can only be upon thefuppofition that R is at an infinite diftance from B ; that is, that the reflected rays BR and DR be parallel, jp. ED. Case io- Diverging rays falling upon a concave furface, and proceeding from ihe focus of parallel rays, become parallel after reflection. D em. Let RD, RB (fig. 8.), be two diverging rays incident upon the concave furface BD, as fuppo¬ fed in Cafe 4. where it was demonftrated that FB is to RB as CF to CR. But in the prefent cafe RB and CR are equal, becaufe R is fuppofed to be the focus of parallel rays ; therefore FB and FC are fo too : which cannot be unlefs F be taken at an infinite di- Itance from B ; that is, unlefs the reflected rays BF and DF be parallel. S^E. D. Obs. It is here obfervable, that in the cafe of di- verging rays falling upon a convex furface (lee fig. 7.), the farther the point D is taken from B, the nearer the point F, the focus of the reflected rays, approaches to B, while the radiant R remains the fame. For it is evident from the curvature of a circle, that the point D (fig. 9.) may be taken fo far from B, that the re¬ flected ray DE fliall proceed as from F, G, H, or even from B, or from any point between B and R; and the farther it is taken from B, the fafter the point from which it proceeds approaches towards R: as will eafily appear if we draw feveral incident rays with their refpeftive reflected ones, in fuch manner that the angles of reflection may be all equal to their re- fpeCtive angles of incidence, as is done in the figure. The like is applicable to any of the other cafes of di- verging or converging rays incident upon a fpherical furface. This is the reafon, that when rays are confidered as reflected from a fpherical furface, the diftance of the oblique rays from the perpendicular one that it may be fuppofed to va- From hence it follow-s, that if a number of diver- ging ra) s are incident upon the convex furface BD at the feveral points it, D, D, &c. they fhall net pro¬ ceed after reflection as from any point in the line RB produced,_ but as from a curve line palling through the fevc-n ! p„,„ts F /, /; &c. The fair<. u ap licable in all the other cafes. N° 248. £ G S. PartT. Had the curvature BD (fig. 7.) been hyperboli- Laws of cal, having its foci in R and F ; then R being the ra. Reiie&ion, diant (or the imaginary focus of incident rays), F * J would have been the focus of the reflected ones, and 'vice verf/j) however diftant the points B and D might be taken from each other. In like manner, had the curve BD (fig. 8.) been elliptical, having its foci in F and R, the one of thefe being made the radiant (or imaginary focus ©f incident rays), the other would have been the focus of reflected ones, and vice verfa. For both in the hyperbola and ellipfis, lines drawn from each of their foci through any point make equal angles with the tangent to that point. Therefore, if the incident rays proceed to or from one of their foci, the reflected ones will all proceed as from or to the other. So that, in order that diverging or converging rays may be accurately refleCted to or from a point, the reflecting furface muft be formed by the revolu¬ tion of an hyperbola about its longer axis, when the incident rays are fuch, that their radiant or imaginary focus of incident rays fhall fall on one fide the furface, and the focus of the refleCted ones on the other: when they are both to fall on the fame fide, it muft be form¬ ed by the revolution of an ellipjts about its longer axis. However, upon account of the great facility with which fpherical furfaces are formed in coraparifon of that with which furfaces formed by the revolution of any of the conic feCtions about their axes are made, the latter are very rarely ufed. Add to this another inconvenience, viz. that the foci of thefe curves being mathematical points, it is but one point of the furface of an objeCt that can be placed in any of them at a time; fo that it is only in theory that furfaces formed by the revolution of thefe curves about their axes ren¬ der reflection perfeCt. jpg Now, becaufe the focal diftance of rays refleCted from Method of a fpherical furface cannot be found by the analogy ^ laid down in the third propofition, without making jiance 0f ufe of the quantity fought; we (hall here give an in-rays reflec* flance whereby the method of doing it in all otherste^ hom» will readily appear. face^1 ^ Prob. Let it be required to find the focal diftance of diverging rays incident upon a convex furface, whofe radius of convexity is 5 parts, and the diftance of the radiant from the furface is 20. Sol. Call the focal diftance fought x; then will the diftance of the focus from the centre be 9—.v, and that of the radiant from the fame 25* therefore by prop .3. we have the following proportion, viz. * : 20 : : 5—■ x : 25 ; and multiplying extremes together and means together, we have 25 100—20a:, which, after due reduAion, gives x— l-£-r- If in any cafe it fhould happen that the value of x Ihould be a negative quantity, the focal point muft; then be taken on the contrary fide of the furface to that on which it was fuppofed that it would fall in ftating the problem. If letters inftead of figures had been made ufe of in the foregoing folution, a general theorem might have been raifed, to have determined the focal diftance of refle&ed rays in all cafes whatever. See this done in Suppl. to Gregory's Optics, 2d edit. p. I 12. Becaufe it was, in the preceding fe&ion, obferved, that different incident rays, though tending to or from one point, would after refia&ion proceed to or from 6 different Part T. The Ap¬ pearance of Bodies li en by Re fledtion. Plate CCCL1X 190 The ap- yearance 1 ohjedf s 1 e flefttd from plar Surfaces. O P T different points, a method there inferted of detcr- rohiing the diftindt point which each feparate tay entering a fpherical furface converges to, or diverges from, after refraction : the fame has been obferved here with regaid to rays reflected from a fpherical furface ffeeObf. in Cafe 2. ami Cafe 10.) 13ut the method of determining the diftindt point to or from which any given incident ray proceeds after reflection, is much more Ample. It is only neceffary to draw the refkaed ray fuch, that the angle of reflection may be equal to the angle of incidence, which will determine the point it proceeds to or from in any cafe whatever. > <) 3. Of the appearance of Bodies feen by Light refected from plane and fpherical Surfaces. Whatever has been faid concerning the appear¬ ance of bodies feen by refraCted light through lenfes, refpeCts alfo the appearance of bodies feen by reflec¬ tion. But befides thefe, there is one thing peculiar to images by reflection, viz. that each point in the re- prefentation of an objeCt, made by reflection appears fituated fomewhere in an infinite right line that paffes through its correfpondent point in the objeCt, and is perpendicular to the reflecting furface. The truth of this appears fufficiently from the pro- pofitions formerly laid down : in each of which, rays flowing from any radiant point, are fhown to proceed after reflection to or from fome point in a line that pafles through the faid radiant, and is perpendicular to the reflecting furface. For inftance (fig. 1.), rays , flowing from Y are collected in X, a point in the per¬ pendicular CD, which, being produced, pafTes through Y : again (fig. 2.), rays flowing from G, proceed, after reflection, as from N, a point in the perpendicu¬ lar CD, which, being produced, pafTes through G ; and fo of the reft. This obfervation, however, except where an objeCt is feen by reflection from a plain furface, relates only to thofe cafes where the reprefentation is made by means of fuch rays as fall upon the reflecting furface with a very fmall degree of obliquity ; becaufe fuch as fall at a conllderable diftance from the perpendicu¬ lar, proceed not after reflection as from any point in that perpendicular, but as from other points fituated in a certain c urve, as hath already been explained ; upon which account thefe J'ays are negleCted, as ma¬ king a confufed and deformed reprefentation. And therefore it is to be remembered, that however the fi- tuation of the eye with refpeCt to the objeCt and reflec¬ ting furface may be reprefented in the following fi¬ gures, it is to be fuppofed as fituated in fuch a man¬ ner with refpeCt to the objeCt, that rays flowing from thence and entering it after reflection, may be fuch on’y as fall with a very fmall degree of obliquity up¬ on the furface ; that is, the eye mu ft be fuppofed to be placed almoft direCtly behind the objeCt, or be¬ tween it and the reflecting furface. The reafon why it is not always fo placed, is only to avoid confufion in the figures. I. When an objeCt is feen by reflection from a plane T furface, the image of it appears at the fame diftance - behind the furface that the object is placed before it, of the fame magnitude therewith, and direCtly oppo- fite to it. Vol. XIII. Part I. ICS. .313 To explain this, let AB (fig. 10 ) reprefent an ob-The Ap- jeCt feen by reflection from the plain furface SV; andP^*^ let the rays AF, AG, be fo inclined to the furface, feen by Re- that they {hall enter an eye at H after reflection ; fle&Lon. and let AE be perpendicular to the furface : theft, y-—’ by the obfervation juft mentioned, the point A will appear in fome part of the line AE produced, fup- pofe I ; that is, the oblique rays AF and AG will proceed after reflection as from that point; and fur¬ ther, becaufe the reflected rays FH, GK, will have the fame degree of inclination to one another that their incident ones have, that point mutt neceffarily be at the fame diftance from the furface that the point A is; the reprefentation therefore of the point A will be at the fame diftance behind the furface that the point itfelf is before it, and direClly oppofite to it: confequently, fince the like may be fhown of the point B, or of any other, the whole image IM will appear at the fame diftance behind the furface that the objeft is before it, and direClly oppofite to it ; and beCaufe the lines AI, BM, v/hich are perpendicular to the plain furface, are for that reafon parallel to each other, it will alfo be of the fame magnitude therewith. - ^ j^f II. When an objeCt is feen by reflection from a con-From con» vex furface, its image appears nearer to the furface, vex fur- and lefs than the ohjedt. ^ccs > an,i Let AB (Hg. 12.) reprefent the objeCt, SV a reflec¬ ting furface whofe centre of convexity is C : and let the rays AF, AG, be fo inclined to the furface, that after reflection therefrom, they fhall enter the eye tit H : and let AE be perpendicular to the furface; then will the oblique rays AF, AG, proceed after reflection as from feme point in the line AE produced, fuppofe from I ; which point, becaufe the reflected rays will diverge more than the incident ones, muft be nearer to the furface than the point A. And finee the fame is alfo true of the rays which flow from B» or any other point, the repvefenration IM will be near¬ er to the furface than the objeCt ; and becaufe it is terminated by the perpendiculars AE and BF, which incline to each other, as concurring at the centre, it will alfo appear lefs. III. When an objeCt is feen by reflection from arrorgco#, concave furface, the reprefentation of it is various, both cave fur- with regard to its magnitude and fituation, according faces. as the dittance of the objeCt from the reflecting furface is greater or lefs. e- 1. When the objeCt is nearer to the furface than its focus of parallel rays, the image falls on the oppofite fide of the furface, is more diftant from it, and larger than the objeCt. Thus, let AB (fig. 13.) be the objeCt, SV the re¬ flecting furface, F the focus of parallel rays, and 0 its centre. Through A and B, the extremities' of the objeCt, draw the lines CE, CR, which will be perpendicular to the furface ; and let the rays AR* AG, be incident upon fuch points of it that they fhall lie reflected into an eye at H. Now, bccaufe the ra¬ diant points A and B are neaier the furface than F the focus of parallel rays, the reflected rays will di¬ verge, and will therefore proceed as from fome points on the oppofite fide of the furface; which points, by the ♦ obfervation laid down at the beginning of this fedtion, will be in the perpendiculars AE, BR, produced, ■fuppofe in I and M: but they will diverge in a lefs R v degree OPT degree than their incident ones (fee the propofition jult referred to) ; and therefore the faid points will be farther from the furface than the points A and B. The image therefore will be on the oppofite fide from diffe- of the furface with refpeft to the ohjeft: it will be rent Surfa- niore Jidant than it; and confequently being termi- CtS' nated by the perpendiculars Cl and CM, it will alfo be larger. 3H 't he Ap- ptrarance of Bodies fcen By Ke fleftion 2. When the objeft is placed in the focus of paral¬ lel rays, the refle&ed rays enter the eye parallel; in which cafe the image ought to appear at an infinite di- ilance behind the reflecting furface : but the repre- fentation of it, for the like reafons that were given in the foregoing cafe, being large and diftind, we judge it not much farther from the furface than the image. 3. When the objeft is placed between the focus of parallel rays and the centre, the image falls on the opposite fide of the centre, is larger than the object, and in an inverted polition. CC^l-dX ’Ihus let AB (fig. 14.) reprefent the objeCt, SV ^ J ' the reflecting furface, F its focus of parallel rays, and C its centre. Through A and B, the extremities of the objeCt, draw the lines CE and CN, which will be perpendicular to the furface ; and let AR, AG, be a . pencil of rays flowing from A. Thefe rays proceed¬ ing from a point beyond the focus of parallel rays, will after reflection converge towards fome point on the oppofite fide the centre, which will fall upon the per¬ pendicular EC produced, but at a greater diftance from C than the radiant A from which they diverged. For the fame reafon, rays flowing from B will con¬ verge to a point in the perpendicular NC produced, which (hall be farther from C than the point B ; from whence it is evident, that the image IM is larger than, the objeCt AB, that it falls on the contrary fide the centre, and that their pofitions are inverted with re- fpeCl to each other. 4. If the objeCl be placed beyond the centre of con¬ vexity, the image is then formed between the centre and the focus of parallel rays, is lefs than the objed^ and its pofition is inverted. This propofition is the converfe of the foregoing: for as in that cafe rays proceeding from A were re- fleded to I, and from B to M; fo rays flowing from I and M will be refleded to. A and B; if therefore an objed be fuppofed to be fituaced beyond the centre in IM, the image of it will be formed in AB between that and the focus of parallel rays, will be lefs than the objed, and iaverted. 5. If the middle of the objed be placed in the cen¬ tre of convexity of the refleding furface, the objed and its image will be coincident; but the image will be inverted with refped to the objed. That the place of the image and the objed fliould be the fame in this cafe needs little explication ; for the middle of the objed being in the centre, rays flowing from thence will fall perpendicularly upon the furface, and therefore neceflarily return thither again ; fo that the middle of the image will be coin¬ cident with the middle of the objed. But that the image (hould be inverted is perhaps not fo clear. To explain this, let AB (fig. 15.) be the objed, having Us njidule point C in the centre of the refleding fur. I C S. Fart I,, face SV ; through the centre and the point II draw The Ap- the line CR, which will be perpendicular to the re- r^arance fleding furface ; join the points AR and BR, and let feen°b'en AR reprefent a ray flowing from A ; this will be re-e' fleded into RB : for C being the middle point be-from diffe- tween A and B, the angles ARC and CRB are equal;rent Surfa. and a ray from B will likewife be refleded to A ; andces' t , therefore the pofition of the image will be inverted v with refped to that of the objed. In this prepofition it is to be fuppofed, that the. objed AB is fo fituated with refped to the refleding furface, that the angle ACR may be right; for other- wife the angles ARC and BRC will not be equal, and part of the image will therefore fall upon the objed and part off. 6. If in any of the three Lift cafes, in each of which the image is formed on the fame fide of the reflec¬ ting furface with the objed, the eye be fituated far-, ther from the furface than the place where the image, falls, the rays of each pencil, crofiing each other in.. the feveral points of the image, will enter the eye as. from a real objed fituated there ; fo that the image, will appear pendulous in the air between the eye and the refleding furface, and in the pofition wherein it is formed, viz. inverted with refped to the objed, in the fame manner that an image formed by refraded" light appears to an. eye placed beyond ft; which waa fully explained under Prop. IV. (p. 304.), and there¬ fore neesls not be repeated. But as what relates to the appearance of the objed. when the eye is placed nearer to the furface than the image, was not there fully inquired into, that point lhall now be more ftridly examined under the follow¬ ing cafe, which equally relates to refraded and refled¬ ed light. 7. If the eye be fituated between the refleding fur¬ face and the place of the image, the objed is then feen beyond the furface; and the farther the eye re¬ cedes from the furface towards the place of the image,, the more confufed, larger, and nearer, the objed ap¬ pears. To explain this, let AB (fig. 16.) reprefent the ob¬ jed ; IM its image, one of whofe points M is formed, by the concurrence of the refleded rays DM, EM, &c. which before refledion came from B ; the other, I, by the concurrence of DI, El, Sec. which came from A : and let - made by rdledtion is fttuated fomewhere in a right line that pafl'es through its correfpondent point in the feen ^ Re_ objedt, and is perpendicular to the refledting furface, lle&ion as was fhown in the beginning of this fedtion ; we may from diffc- from hence deduce a molt eafy and expeditious method U1 9 of determining both the magnitude and lituation of ^ 1 the image in all cafes whatever. Thus, Through the extremities of the objedt AB and the centre C (fig. 17, 18, or 19.) draw the lines AC BC, and produce them as the cafe requires; thefe lines v/ill ^ ^ be perpendicular to the refledting furface, and therefore the extremities of the image will fall upon them. Through F the middle point of the ohjedt and the centre, draw the line FC, and produce it till it paffes through the refledting furface ; this will alfo be per¬ pendicular to the furface. Through G, the point where this line cuts the furface, draw the lines AG and BG, and produce them this way or that, till they crofs the former perpendiculars; and where theycrofs» there I and M the extremities of the image will fall. For fuppofing AG to be a ray proceeding from the point A and falling upon G, it will be refledted to B ; becaufe FA is equal to FB, and FG is perpendicular to the refledting furface ; and therefore the reprefen- tation of the point A will be in BG produced as well as in AC; confequently it will fall on the point I, where they crofs each other. Likewife the ray BG will for the fame reafon he refledted to A ; and therefore the reprefentation of the point B will be in AG produced, as well as in fomc part of BC, that is, in M where they crofs. From whence the propofition is clear. If it happens that the lines will not crofs which way foever they are produced, as in (fig. 20.), then is the obje<& in the focus of parallel rays of that furface, and has no image formed in any place what¬ ever. For in this cafe the rays AFI, AG, flowing from the point A, become parallel after refledtion in the lines HC, GB, and therefore do not flow as to or from any point : in like manner, rays flowing from B are refledted into the parallel lines KB and GA ; fo that no reprefentation can be formed by fuch refledtion. From hence we learn another circumflance relating to the magnitude of the image made by refledtion ; viz. that it fubtends the fame angle at the vertex of the refledting furface that the objedt does. This ap¬ pears by inlpedtion of the 17th, 18th, or 19th figure, in each of which the angle IGM, which the image fubtends at G the vertex of the refledting furface, is equal to the angle AGB, which the objedt fub¬ tends at the fame place; for in the two firft of thofe figures they are vertical, in the third they are the fame. And, Farther, the angle ICM, which the image fubtenda at die centre, is alfo equal to the angle ACB which the objedt fubtends at the fame place ; for in the two firft figures they are the fame, in the laft they are ver¬ tical to each other. From whence it is evident, that the objedt and its image are to each other in diameter, either as their refpedtive diftances from the vertex of the refiedting furface, or as their diftances from the centre of the fame. Rr 2 3*6 i.ight c!i«- ferently rcfrangi- Plate C'CCLIX. OPT IV. As objcAs are multiplied by being feen thro’ tranfparent media, whofe furfaces are properly difpo- fed, fo they may alfo by reflecting furfaces. Thus, 1. If two refle&ing furfaces be difpofed at right angles, as the furfaces AB, BC, (fig. 2t.), an object at D may be feen by an eye at E, after one reflection at F, in the line EF produced ; after two reflections, the firfl at G, the fecond at H, in the line EH pro¬ duced t and alfo, after one reflection made at A, in the line EA produced. 2. If the furfaces be parallel, as AB, CD, (fig. 22.), and the objeCl be placed at E and the eye at F, the objeCt will appear multiplied an infinite number of times : thus, it may be feen in the line FG produced, after one reflection at G; in the line FH produced, after two reflections, the fir ft at I, the fecond at H ; and alfo in FP produced, after feveral fueceffive reflec¬ tions of the ray EL, at the points L, M, N, O, and P: and fo on in infinitum. But the greater the number of reflections are, the weaker their reprefentation will be. Sect. IV. Of the different RefravgibUity of Light. As this property of light folves a great number of the phenomena which could not be underftood by for¬ mer opticians, we fhall give an account of it in the words of Sir Ifaac Nev/ton, who firfl difeovered it; efpecially as his account is much more full, clear, and perfpicuous, than thofe of fucceeding writers. CrCLX a Ver? ^ark chamber, at a round hole F(fig. 1.), about one third of an inch broad, made in the fhut of a window, I placed a glafs prifm ABC, whereby the beam of the fun’s light, SF, which came in at that hole, rpight be'refraCled upwards, toward the oppofite wall of the chamber, and there form a coloured image of the fun, repreiented at PP. The axis of the prifm (that is, the line palling through the middle of the prifm, from one end of it to the other end, parallel to the edge of the refrafting angle) was in this and the following experiments peipendicular to the inci¬ dent rays. About this axis I turned the prifm flotvly, and faw the refraded light on the wall, or coloured image of the fun, firft to defeend, and then to afeend. Between the defeent and afeent, when the image feemed ftationary, 1 flopped the prifm and fixed it in that pofture. “ Then I let the refraCled light fall perpendicularly npon a (beet of white paper, MN, placed at the op¬ pofite wall of the chamber, and obferved the figure and dimenfions of the folar image, PP, formed on the pa¬ per by that light. This image was oblong, and not oval, but terminated by two re&ilinear and parallel fides and two femicircular ends. On its fidcs it was bounded pretty diftintdy; but on its ends very confu- fedly and indiftinCtly, the light there decaying and va- iiifhing by degrees. At the diflance of 184 feet from the priim theflireadth of the image was about 2-g- inches, but its length was about 10^ inches, and the length of its reAiiinear fides about eight inches ; and ACB, the refra Aing angle of the prifm, whereby fo great a length was ma e, was 64 degrees. With a lefs angle the length of the image was lefs, the breadth remaining the fame. It is farther to be obferved, that the rays went on in flraight lines from the prifm to the image, I C S, Part f, and therefore at their going out of the prifm had all Light dif. that inclination to one another from which the length^eremlv of the image proceeded. This image PT was colour- £jgrangi’ cd, and the more eminent colours lay in this order from e' j the bottom at T to the top at P ; red, orange, yel¬ low, green, blue, indigo, violet ; together with all their intermediate degrees in a continual fucceffion perpetually varying.” Our author concludes from this experiment, and Light con- many more to be mentioned hereafter, “ that the light,, f fe' of the fun confifts of a mixture of feveral forts of co- loured rays, fome of which at equal incidences are ray^difft-l more refracted than others, and therefore are called rently re- more refrangible. The red at T, being neareft to the frangible, place Y, where the rays of the fun would go directly if the prifrn was taken away, is the leaft refrafled of all the rays ; and the orange, yellow, green, blue, in¬ digo, and violet, are continually more and more re- fraifled, as they are more and more diverted from the courfe of the direft light. For by mathematical rea- foning he has proved, that when the prifm is fixed in the pofture above-mentioned, fo that the place of the image fhall be the loweft poffible, or at the limit between its defeent and afeent, the figure of the image ought then to be round like the foot at Y, if all the rays that tended to it were equally refraefled. There¬ fore, feeing by experience it is found that this image is not round, but about five times longer than broad, it follows that all the rays are not equally refrafled.. And this conclufion is farther confirmed by the fol¬ lowing experiments. “ In the fun-beam SF (fig. 2.), which was propagated into the room thro’ the hole in the window-fhut EG, at the diftance of fome feet from the hole, I held the prifm ABC in fuch a pofture, that its axis might be perpendicular to that beam: then I looked through the priim upon the hole F, and turning the prifm to and fro about its axis to make the image p t qS. the hole afeend and defeend, when between its two contrary motions it feemed flationary, I flopped the prifm; in this fituation of the prifm, viewing through it the faid hole F, I obferved the length of its refrafled image /> # to be many times greater than its breadth; and that the molt refrafled part thereof appeared violet at p ; the leaft refrafled red, at / ; and the middle parts indigo, blue, green, yellow, and orange, is order. The fame thing happened when 1 removed the prifm out of the fun’s light, and looked through it upon the hole fhining by the light of the clouds beyond it. And yet if the refraflions of all the rays were equal ac¬ cording to one certain proportion of the fines of in¬ cidence and refraflion, as is vulgarly fuppofed, the refrafled image ought to have appeared round, by the mathematical demonftration above-mentioned. So then by thefe two experiments it appears, that in equal incidences there is a confiderable inequality of refraflions.” For the difeovery of this fundamental property of’ light, which has opened the whole myftcry of co¬ lours, we fee our author was not only beholden to the experiments themfelves, which many others had made before him, but alfo to his fleill in geometry ; which was abfolutely neceflary to determine what the figure of the refrafled image ought to be upon the old prin¬ ciple of an equal refraflion of all the rays; hut ha- & ving part I. Ugto dif¬ ferently rdiangi- b!c. Plate CCCLX. TP5 ■Refleiiled fight diffc ftntly re- Irangible OPT vlng thuamde the difeovery, he contrived the follow¬ ing experiment to prove it at fight. «£In the middle of two thin beards,DE ^(ng. 3.), i made a round hole in each, at G and ^ a thud part of an inch in diameter; and in the window-lnut a much larger hole being made, at F, to let into my darkened chamber a large beam of the fun s light, i placed a prifm, ABC, behind the fhut in that beam, to refraft it towards the oppofite wall; and dole be¬ hind this prifm I fixed one of the boards DE, in fuch a manner that the middle of the refra&ed light might pafs through the hole made in it at G, and the red be intercepted by the board. Then at the diftance of about 12 feet from the firlh board, 1 fixed the other board, , above that of the red and yellow at t: and afterwards, when the reft of the light, which was green, yellow, and red, began to be totally refle&ed and vanifhed at G, the light of thofe colours at t, on the paper p t, re¬ ceived as great an increafe as the violet and blue had received before. Which puts it paft difpiue, that thofe rays becarhe- firft of all totally refle&ed at the bale BC, which before at equal incidences with the reft upon the bafe BC had fuffered the greateft re- fra&icn. 1 do not here take notice of any refrac¬ tions made m. the fides AC, AB, of the firft prifm,, becaufe the light enters almoft perpendicularly at the firft fide, and goes out almoft perpendicularly at the fecond ; and therefore fuffers none, or fo little, that the angles of incidence at the bafe BC are not fenfibly altered by it ; efpecially if the angles of the prifm at the bafe BC be each about 40 degsees. For the rays: FM begin to be totally refle&ed when the angle CMF is about 90 degrees, and therefore they will then make a right angle of 90 degrees with AC. “ It appears alfo from experiments, that the beam of light MN, refle&ed by the bafe of the prifm, being augmented firft by the more refrangible rays and afterwards by the lefs refrangible, is compofed of raya differently refrangible. “ The light whofe rays are all alike refrangible, I call jjmp/e, hoinogeneaf and Jimilar ; and that whofe rays are fome more refrangible than others, I call compound, heterogeneal; and dtftmilar. 1 he former light I call homogeneal, not becanfe I would affirm it fo in all re- fpe&s ; but becaufe the rays \yhich agree in refrangi- bility agree at k-aft in all their other properties which I confider in the following difeourfe. “ The colours of homogeneal lights I call primary, Q0^rs homogeneal, and Jimple; and thofe of heterogeneal lights, rimple r>r heterogeneal and compound. For thefe are always com - compound pounced of homogeneal lights, as will appear in the. following difeourfe. « The homogeneal light and rays which appear red, or rather make obje&s appear fo, I call rulnjic or red-making; thofe which make obje&s- appear yellow, green, bine, and violet, I call yellow-making, green making, blue-making, violet-making ; and fo of the reft. And if at any time I fpeak of light and rays as coloured or endowed with colours, I would be under- flood to fpeak not philofophieally and properly, but grofsly, and according to fuch conceptions as vulgar neorle ji8 i-itrht difffi rently re- iVantrjble. 0 T97 Why the image of the fun, by heteroge- reous rays pafling through a j rifm, is oblong. Plate CCCLX. people in feeing all thefe experiments would be apt to frame. Tor the rays, to fpeak properly, are not co¬ loured. In them there is nothing elfe than a certain power and difpofition to ftir up a fenfation of this or that colour. For as found, in a bell or mufical firing or other founding body, is nothing but a trembling motion, and in the air nothing but that motion pro¬ pagated from the objedl, and in the fenferium it is a fenfe of that motion under the form of found ; fo co¬ lours in the objedl are nothing but a difpofition to re- fietl this or that fort of rays more copioufly than the reft . in rays they are nothing but their difpofitions to piopagate this or that motion into the fenforium ; and in the fenforium they are fenfations of tliofe motions under the forms of colours. See Chromatics. ( hy the mathematical propofition above-mention¬ ed, it is certain that the rays which are equally re¬ frangible do fall upon a circle anfvvering to the fun’s apparent dillc, which will alfo be proved by experiment by and by. Now let AG ('fig. y.) reprefent the circle which all the moft refrangible rays, propagated from the whole difk of the fun, woudd illuminate and paint upon the oppofite wall if they were alone ; EL the circle, which all the leaft refrangilje rays would in like manner illuminate if they were alone ; BH, Cl, DIC, the circles which fo many intermediate forts would paint upon the wall, if they were fingly propagated from the fun in fucceffive order, the reft being inter¬ cepted ; and conceive that there are other circles with¬ out number, which innumerable other intermediate forts of rays would fuccefiively paint upon the wall, if the fun Ihould fucceffively emit every fort apart. And feeing the fun emits all thefe forts at once, they muft all together illuminate and paint innumerable equal circles; of all which, being according to their degrees of refrangibility placed in order in a continual feries, that oblong fpeftrum P F is compofed, which was de- fenbed in the firft experiment. . N°w if thefe circles, whilft their centres keep their diftances and pofitions, could be made lefsin dia¬ meter, their interfering one with another, and confe- quently the mixture of the heterogeneous rays, would be preportionably diminilhed. Let the circles AG, BH, Cf, &c. remain as before ; and let ag, bh> ci, &c. .e fo many lefs circles lying in a like continual feries, between two parallel right lines ^ and ^/, with the fame diftances between their centres, and illuminated with the fame forts of rays : that is, the circle with the fame fort by which the correfponding circle AG was illuminated ; and the reft of the circles l> h, c i, dL cl refpedhvely with the fame forts of ray is by which the correfponding circles BH, CI, DK, EL, were il¬ luminated. In the figure PT, compofed of the great circles, three «f thofe, AG, BH, CI, are fo expanded into each other, that three forts of rays, by which thofe circles are illuminated, together with innumerable other ions of intermediate rays, are mixed at OR in the midde of the circle BH. And the like mixtftre hap- pens throughout almoft the whole length of the figure A,1Y Vn - ?gUre P *' comPofed of the lefs circles, ie iree e s circles/?^, bh, ci, which anfwer to thofe three greater, d@ not extend into one another ; nor are there anywhere mingled fo much as any two of the rated ard °ti ‘^ 3 W!11'c^ t^°^e circles ate illumi¬ nated, and which in the figure PT are all of them in- I C S. PhrtT, termingled at QR- So then, if we would dim ini Hr the Light diflfe, mixture of the rays, we are to diminilh the diametersrcnt‘y re of the circles. Now thefe would be diminiftted if thefran^U,le- fun’s diameter, to which they anfwer, could be made lefj than it is, or (which comes to the fame purpofe) if without doors, at a great diftance from the prifm towards the fun, fome opaque body were placed with a round hole in the middle of it to intercept all the fun s light, e-xcept fo much as coming from the middle of his body could pafs through that hole to the prifm. For lo the circles AG, BH, and the reft, would not any longer anfwer to the whole dilk of the fun, but only to that part of it which could be feen from the prifm through that hole ; that is, to the apparent mag¬ nitude of that hole viewed from the prifm. But that thefe circles may anfwer more diftL&ly to that hole, a lens is to be placed by the prifm to call the image of the hole (that is, every one of the circles AG, BH, See.) diftinaiy upon the paper at PT ; after fuch a manner, as by a lens placed at a window the pictures of obje&s abroad are call diftin&ly upon a paper with¬ in the room. It this be done, it will not beneceflary to place that hole very far off, no not beyond the win- dow. And therefore, inftead of that hole, I ufed the hole in the window-fhut as follows. in the fun s light let into my darkened chamber through a fmall round hole in my window-fhut, at. about to or 12 feet from the wfindow, 1 placed a lens MN(fig. 6.), by which the image of the hole Fmight be diftindly call upon a fheet of white paper placed at I. 1 hen immediately after the lens I placed a priftn ABC, by which the trajeded light might be refrac¬ ted either upwards or fideways, and thereby the round image which the lens alone did call up*n the paper at I, might be drawn out into a long one with parallel fides, as reprefented at p t. This oblong image 1 let fall upon another paper at about the fame diftance from the prifm as the image at I, moving the paper either towards the prifm or from it, until I found the juft diftance where the redilinear lides of the image p t become moft diftind. For in this cafe the circular images of the hole, which compofe that image, after the manner that the circles ag, bh, ci, &c. do the figure p t, were terminated moft diftindly, and there¬ fore extended into one another the leait that they could, and by confequence the mixture of the heterogeneous rays was now the leaft of all. The circles a g, bhy ci, &c. which compofe the image//, are each equal to the circle at I ; and therefore, by diminifhing the hole F,. or by removing the lens farther from it, may be dimimfhed at pleafure, whilft their centres keep the fame diftances from each other. Thus, by dimi¬ nifhing the breadth of the image />/, the circles of he- terogeneal rays that compofe it may be feparated from each other as much as you pleafe. Yet inftead of the circular hole F, it is better to fubftitute an oblong hole fhaped like a parallelogram, with its length parallel to the length of the pnfm. For if this hole be an inch or two long, and but a 10th or 2Cth part of an inch broad, or narrower, the light of the image pt will be as fimple as before, or Ampler ; and the image being much broader, is therefore fitter to have experiments tried in its light than before. “ Homogeneal light is refraded regularly without any dilatation, fplitting, or fluttering of the rays j and ^ the Pirtl. OPT Lu'htdiff; the confufcd vifion of objefta feen through refra^ing rently re- foodies by heterogeneal light, arifes from the different frai.jhWe. refrangibility of feveral forts of rays. This will appear i<;8 hy the experiments which will follow. In the middle The imaoe of a black paper I made a round hole about a fifth or «'f the fun, a fixth part of an inch in diameter. Upon this paper I by/^P!e caufed the fpe&rum of homogeneal light, deferibed in Ipeneou™0 ^1C former article, fo to fall that fomepart of the light light,circu-might p ifs through the hole in the paper. This tranf- lar. nnitted part of the light I refraded with a prifm pla¬ ced behind the paper: and letting this refraded light fall perpendicularly upon a white paper, two or three feet difiant from the prifm,*1 found that the fpedrum formed on the paper by this light was not oblong, as when it is made in the firll experiment, by refrading the fun's compound light, but was, fo far as I could judge by my eye, perfedly circular, the length being nowhere greater than the breadth ; which fhows that this light is refraded regularly without any dilatation of the rays, and is an ocular demonllration of the ma¬ thematical propofition mentioned above. “ In the homogeneal light 1 placed a paper circle of a quarter of an inch in diameter; and in the fun’s unrefraded, heterogeneal, white light, I placed ano¬ ther paper circle of the fame bignefs ; and going from thefe papers to the diftance of fome feet, I view.ed both circles through a prifrn. The circle illuminated by the fun’s heterogeneal light appeared very oblong, as in the fecond experiment, the length being many times greater than the breadth. But the other circle illuminated with homogeneal light appeared circular, and diilindly defined, as when it is viewed by the nar ked eye ; which proves the whole propofition mention- 199 *n tfie beginning of this article. “ In the homogeneal light I placed flies and fuch like minute objeds, and viewing them through a prifm homo^ene- I faw their parts as diftindly defined as if I had view- al than in ed them with the naked eye. The fame objeds pla- heteropene-ced in the fun’s unrefraded heterogeneal light, which cus light was wfo|te, I viewed alfo through a prifm, and faw them moft confufedly defined, fo that I could not di- ftinguilh their fmaller parts from one another. I pla¬ ced alfo the letters of a fmall print one while in the homogeneal light, and then in the heterogeneal; and viewing them through a prifm, they appeared in the latter cafe fo confufed and indiftind that I could not read them ; but in the former, they appeared fo diftind that I could read readily, and thought I faw them as diltindt as when I viewed them with my naked eye in both cafes, I viewed the fame objeds through the fame prifm, at the fame diftance from me, and ik the fame fituation. There was no difference but in the lights by which the ebjedis were illuminated, and which in one cafe was fimple, in the other compound ; and therefore the diftind vifion in the former cafe, and confufed i» the latte*, could arife from nothing elfe than from that difference in the lights. Which proves the whole propofition. “ In thefe three experiments, it is farther very re- Vi fion more di. ftindt in res. 319 markable, that the colour of homogeneal'light was Light differ never changed by the refradion. And as thefe colours™” were not changed by refradions, fo neither -were they ' by refledions. For all white, grey, red, yellow, green, blue, violet bodies, as paper, afhes, red lead, orpi- ment, indigo, bice, gold, filver, copper, grafs, blue flowers, violets, bubbles of water tinged with various colours, peacocks feathers, the tincture of lignum ne- phriticum, and fuch like, in red homogeneal light ap- • peared totally red, in blue light totally blue, in green light totally green, and fo of other colours. In the homogeneal light of any colour they all appeared to¬ tally of that fame colour ; with this only difference, that fome of them refleded that light more ftrongly, others more faintly. I never yet found any body which by refltding homogeneal light could fenfibly change its colour. “ From all which it is manifeft, that if the fun’s light confifted of but one fort of rays, there would be but one colour in the world, nor would it be poffible to produce any new colour by refledions and refrac¬ tions ; and by confequence, that the variety of colours- depends upon the compofition of light. “ The folar image f>t, formed by the feparated raya. in the 5th experiment, did rn the progrefs from rfs end. p, on which the moft refrangible rays fell, unto its end f, on which the leaft refrangible rays fell, appear tin¬ ged with this feries of colours ; violet, indigo, blue*, green, yellow, orange, red, together with ail their in¬ termediate degrees in a continual fucceflion perpetu¬ ally varying; fo that there appeared as many degrees of colours as there were forts of rays differing in re- frangibility. And fince thefe colours could not be changed by refradions nor by refiedions, it follows, that all homogeneal light has its proper colour an- fwering to its degree of refrangibility. ico, “ Every homogeneal ray confidered apart is refrac-Every lif¬ ted, according to one and the fame rule ; fo that itsmn^gneal fine of incidence is to its fine of refradion in a given™}''s 11e' ratio : that is, every different coloured ray has a dif-^Hif^/to ferent ratio belonging to it. This our author has one and proved by experiment, and by other experiments has lhe fame determined by what numbers thofe given ratios are exA1'16* preffed. For inftance, if an heterogeneal white ray of the fun emerges out of glafs into air; or, which is the fame thing, if rays of all colours be fuppofed to fucceed one.another in the fame line AC, and AD(jig. 15.) their Phf« common fine of incidence in glafs be divided into 50 CCCLJ5- equal parts, then EF and GH, the fines of refradion into air, of the leaft and moft refrangible rays, will be 77 and 78 fuch parts refpedively. And fince every colour has feveral degrees, the fines of refradion of all the degrees of red will have all intermediate degrees of magnitude from 77 to 77^-, of all the degrees of orange from 77I* to yyf, of yellow from 774 to 77^, of green from 77I to 77^, of blue from 774- to 77^, of indigo from 77y to 77^, and of violet from 774: 1078." P A R X 320 Of the Rainbow. OPTICS. PART II. Part II. Of the Rainbow, Sect. I. The Application cf the foregoing Theory to feveral natural Phenomena. § l. Of the Rainbow. THIS beautiful phenomenon hath engaged the at¬ tention of all ages. By feme nations it hath been deified ; though the more fenfible part always looked upon it as a natural appearance, and endeavoured, however imperfectly, to account for it. The obfer- vations of the ancients and philofophers of the mid¬ dle ages concerning the rainbow were fuch as could not have efcaped the notice of the mod illiterate huf- bandmen who gazed at the iky ; and their various _hy- Knr.wledge pothefes deferve no notice. It was a confiderable time cf the na- even after the dawn of true philofophy in this weftern ture of the part Gf t]ic world, before we find any difeovery of im- moderndd-Portance on this fubjea- Maurolycus was the firil rovery. who pretended to have meafured the diameters of the two rainbows with m(ich exa&nefs ; and he reports, that he found that of the inner bow to be 45 degrees, and that of the outer bow 56 ; from which Defcarces takes occafion to obferve, how little we can depend upon the obfervations of thofe who were not acquaint¬ ed with the caufe of the appearances. One Chchtovaus (the fame, it is probable, who di- fiinguifhed himfelf by his oppofition to Luther, and who died in 1543) had maintained, that the fecond bow is the image of the firft, as he thought was evi¬ dent fiom the inverted order of the colours. For, laid he, when we look into the water, all the images that we fee refle&ed by it are inverted with refpedf to the objefts themfelves; the tops of the trees, for in- flance, that ftand near.the brink, appearing lower than the roots. That the rainbow is oppofite to the fun, had al¬ ways been obferved. It was, therefore, natural to imagine, that the colours of it were produced by feme kind of reflection of the rays of light from drops of rain, or vapour. The regular order of the colours was another circumftance that could not have efcaped ■the notice of any perfon. But, notwithllanding mere reflexion had in no other cafe been obferved to pro¬ duce colours, and it could not but have been obferved that refraftion is frequently attended with that phe¬ nomenon, yet no perfon feems to have thought of ha- ving recourfe to a proper refraftion in this cafe, be- Approach fore one Fletcher of Breflau, who, in a treatife which madetf lt publifired in 1571, endeavoured to account for the fletcher cf colours of the rainbow by means of a double refrac- Brcflau. tion and one reflexion. But he imagined that a ray of light, after entering a drop of rain, and fuffering a refraction both at its entrance and exit, was after¬ wards refle&ed from another drop, before it reached the eye of the fpedator. He feems to have over¬ looked the reflection at the farther fide of the drop, or to have imagined that all the bendings of the light within the drop would not make a fufficient curvature to bring the ray of the fun to the eye of the fpeftator. That he fliould think of two refractions, was the ne- N° 248. cefiary confequence of his fuppofing that the ray en¬ tered the drop at all. This fuppofition, therefore, was all the light that he threw upon the fubjeft. B. Porta fuppofed that the rainbow is produced by the refraction oflight in the whole body of rain or vapour, but not in the feparate drops. After all, it was a man whom no writers allow to have had any pretenfions to philofophy, that hit upon 20^ this curious difeovery. This was Antonio De Do-Thedifco. minis, blfliop of Spaiatro, whofe treatife De Radiis Vi- ^eiTn!a^e fits et Lucis, was publilhed by J. Bartolus in i6ii.c^d”^ He firft advanced, that the double refraftion of Flet- bifhopof cher, with an intervening refleftion, was fufficient to Spalauo. produce the colours of the bow, and alfo to bring-the rays that formed them to the eye of the fpedtator, without any fubfequent refleftion. He diftinftly de- feribes the progrefs of a ray of light entering the up¬ per part of the drop, where it fuffers one rcfraclion, and after being thereby thrown upon the back part of the inner furface, is from thence refled^ed to the lower part of the drop j at which place undergoing a fecond refradtlon, it is thereby bent, f@ as to come diredfly to the eye. To verify this hypothefis, this perfon (no philofopher as he was) proceeded in a very fenfible and philofophical manner. For he procured a fruall globe of folid glafs, and viewing it when it was expo- fed to the rays of the fun, in the fame manner in which he had fuppofed that the drops of rain were fituated with refpeeft to them, he adtually obferved the fame co¬ lours which he had feen in the true rainbow, and in the fame order. Thus the circumftances in which the colours of the rainbow were formed, and the progrefs of a ray of light through a drop of water, were clearly under- ftood ; but philofophers were a long time at a lofs when they endeavoured to ftffign reafons for all the particu¬ lar colours, and for the order of them. Indeed no¬ thing but the dodirine of the different refrangibility of the rays oflight, which was a difeovery refervtd for the great Sir Ifaac Newton, could furnifh a complete folution of this difficulty. De Dominis fuppofed that the red rays were thofe which had traverfed the leafl fpace in the infide of a drop of water, and therefore retained more of their native force, and confequently, ftriking the eye more brifkly, gave it a ftronger fen- fation ; that the green and blue colours were pro¬ duced by thdfe rays, the force of which had been, in feme meafure, obtunded in paffing through a greater body of water; and that all the intermediate colours were compofed (according to the hypothefis which ge¬ nerally prevailed at that time) of a mixture, of thefe three primary ones. That the different colours were caufed by fome difference in the impulfe of light upon the, eye, and the greater or lefs impreffion that was thereby made upon it, was an opinion which had been adopted by many perfons, who had ventured to depart from the authority of Ariftotle. Afterwards the fame De Dominis obferved, that all "the rays of the fame colour rauft leave the drop of wa¬ ter in a part fimihrly fituated with refpedt to the eye, its Part II• ^ ^ O f the in order that each of the colours may appear in a circle, Rainbow. centre of which is a point of the heavens, in a line —v’—' drawn from the fun through the eye of the fpe&ator. The red rays, he obferved, mail iffue from the drop neareft to the bottom of it, in order that the circle of red may be the outermoid, and therefore the moft ele¬ vated in the bow. Notwithftanding De Dominis conceived fo juftly of the manner in which the inner rainbow is formed, he was far from having as juft an idea of the caufe of the exterior bow. This he endeavoured to explain in the very fame manner in which he had done the inte¬ rior, viz. by one refleftion of the light within the drop, preceded and followed by a refra&ion ; fuppo- fing only that the rays which formed the exterior bow were returned to the eye by a part of the drop lower than that which tranfmitted the red of the inte¬ rior bow. He alfo fuppofed that the rays which form¬ ed one of the bows came from the fuperior part of the fun’s difk, and thofe which formed the other from the inferior part of it. He did not confider, that upon thofe principles, the two bows ought to have been contiguous ; or rather, that an indefinite number of bows would have had their colours all intermixed ; which would have been no bow at all. When Sir Ifaac Newton difeovered the different re- frangibility of the rays of light, he immediately ap¬ plied his new theory of light and colours to the phe¬ nomena of the rainbow, taking this remarkable objeft of philofophical inquiry where De Dominis and Def- cartes, for want of this knowledge, were obliged to leave their inveftigations imperfedt. For they could give no good reafon why the bow fhould be coloured, and much lefs could they give any fatisfa&ory account of the order in which the colours appear. The mie If different particles of light had not different de- caufe of the grees of refrangibility, on which the colours depend, the rainbow, beiides being much narrower than it is, would be colourlefs ; but the different refrangibility of differently coloured rays being admitted, the reafon is obvious, both why the bow fhould be coloured, and alfo why the colours fhould appear in the order in which they are obferved. Let a (fig. 8.) be a drop of water, and S a pencil of light ; which, on its leav¬ ing the drop of water, reaches the eye of the fpefta- tor. This ray, at its entrance into the drop, begins to be decompofed into its proper colours ; and upon leaving the drop, after one refle&ion and a fecond re- fra&ion, it is farther decompofed into as many fmall differently-coloured pencils as there are primitive co¬ lours in the light. Three of them only are drawn in this figure, of which the blue is the moft, and the red the leaft refradbed. The dodlrine of the different refrangibility of light enables us to give a reafon for the fize of a bow of each particular colour. Newton, having found that the fines of refra&ion of the moft refrangible and leaft refrangible rays, in pafiing from rain-water into air, are in the proportion of 185 to 182, when the fine of incidence is 138, calculated the fize of the'bow ; and he found, that if the fun was only a phyfical point, without fenfible magnitude, the breadth of the inner bow would be 2 degrees ; and if to this 30' was add¬ ed for the apparent diameter of the fun, the whole breadth would be 2t degrees. But as the outermoft Vol.XIII. Part I. colours of the rain¬ bow. Plate CCCLX. I c s. colours, efpecialiy the violet, are extremely fain*, the breadth of the bow will not in reality appear to ex¬ ceed two degrees. He finds, by the fame principles, that the breadth of the exterior bow, if it was every¬ where equally vivid, would be 40 zd. But in this cafe there is a greater dedu&ion to be made, on account of the faintnefs of the light of the exterior bow ; fo that, in fa&, it will not appear to be more than 3 degrees broad. The principal phenomena of the rainbow are all explained on Sir Ifaac Newton’s principles in the fol¬ lowing propofitions. When the rays of the fun fall upon a drop of rain and enter into it, fame of them, after one refeSion and tnuo refradions, may come to the eye of a fpeclator who has his back towards the fun, and his face towards the drop. If XY (fig. 9.) is a drop of rain, and the fun^xrla^' fhines upon it in any lines sf, s d, s a, &c. moft °fphenomena the rays will enter into the drop ; fome few of them of rambow only will be refle&ed from the firft furface ; tbofe raysonthe prin- which are Tefle&ed from thence do not come under “I’l63 oJ: our prefent confideration, becaufe they are never re.N-sv‘°“* frafted at all. The greateft part of the rays then en¬ ter the drop, and thofe paffing on to the iecond fur- face, will moft of them be tranfmitted through the drop ; but neither do thofe rays which are thus tranf¬ mitted fall under our prefent confideration, flnce they are not refle&ed. For the rays, which are deferibed in the propofition, are fuch as are twice refrafiled and once reflefiled. However, at the fecond furface, or hinder part of the drop, at pg, fome few rays will be reflefiled, whilft the reft are tranfmitted : thofe rays proceed in fome fuch lines as nr, n q •, and coming out of the drop in the lines r v, q t, may fall upon the eye of a fpefitator, who is placed anywhere in thofe lines, with his face towards the drop, and confequent- ly with his back towards the fun, which is fuppofed to fhine upon the drop in the lines sf, s d, s a, &c. Thefe rays are twice refrafiled and once reflefiled ; they are refrafiled when they pafs out of the air intr» the drop ; they are reflefiled from the fecond furface, and are refrafited again when they pafs out of the drop into the air. When rays of light reflefied from a drop of rain come to the eye, thfe are called ejfcdual which are able t» excite a fenfation. When rays of light come out of a drop of rain, they will not be ejfedual, unlefs they are parallel and cont'u suous. There are but few rays that can come to the eye at all: for fince the greateft part of thofe rays which enU r the drop XY (tig. 9.) between X and a, pafs out of the drop through the hinder furface pg ; only few are reflefiled from thence, and come out through the nearer furface between a and y. Now, fuch rays as emerge, or come out of the drop, between a and Y, will be in- effefitual, unlefs they are parallel to one another, as r v and q t are ; becaufe fuch rays as come out diverging from one another w'ill be fo far afunder when they come to the eye, that all of them cannot enter the pu¬ pil ; and the very few that can enter it will not be S f fufficient 322 Of the Rainhow. OPT fufficient to excite any fenfation. But even rays, which are parallel, as r-u, qt) will not he effectual, unlefs there are feveral of them contiguous or very near to one ahother. The two rays rv and qt alone will not be perceived, though both of them enter the eye ; for fo very few rays are not fufficient to excite a fenfation. When rays of light come out of a drop of rain after one refeElicn, thofe will be ejfeflual which are ref tiled from the fame pointy and which entered the drop near to one another. Plate CCCJLX -Any rays, as sb and c d, (fig. 10.) when they have parted out of the air into a drop of water, will be re¬ fracted towards the perpendiculars b l, d l \ and as the ray s b falls farther from the axis a v than the ray c d, s b will be more refracted than c d; fo that thefe rays, though parallel to one another ac their incidence, may deferibe the lines be and de after refraCtion, and be both of them reflected from one and the fame point e. Now all rays which are thus reflected from one and the fame point, when they have deferibed the lines eJ\ e g> and after reflection emerge at f and will be fo refraCted, when they pafs out of the drop into the air, as to deferibe the linesy h, gi, parallel to one another. If thefe rays were to return from e in the lines e b, edy and were to emerge at b and d, they would be refrac¬ ted into the lines of their incidence bst dc. But if thefe rays, inftead of being returned in the lines eb, sd, are reflected from the lame point e in the lines eg, ef, the lines of reflection eg and ef will be inclined both to one another, and to the furface of the drop ; juft as much as the lines e b and e d are. Firft e b and eg make juft the fame angle with the furface of the drop : for the angle hex, which eb makes with the furface of the drop, is the complement of incidence, and the angle g e , it is go for the ray sc ; and gp for the ray sd. But after this, as the diftance of the incident ray from the axis sa increafes, the arc of refleftion decreafes ; for og lefs than pg is the arc of refleflion for the ray se, and ng is the arc of refltftion for the ray sf., _ From hence it is obvious, that fome one ray, which falls above sd, may be refle&ed from the fume point with fome other ray which falls below sd. Thus, for tnftance, the ray sb will be reflefted from the point «, and the ray sf will be reflefted from the fame point ; and ccnfequently, when the reflected rays nr, nq, are refracted as they pafs out of the drop at r and q, they will be parallel, by what has been fhown in the for¬ mer part of this propofition. But fince the interme¬ diate rays, which enter the drop between sf and s b, are not reflected from the fame point r>, thefe two rays alone will be the parallel to one another when they come out of the drop, and the intermediate rays will not be parallel to them. And confequently thefe rays rv, qt, though they are parallel after they emerge at r and q, will not be contiguous, and for that reafon will not be effeftual ; the ray sd is rtHefted from p, which has !>een {hown to be the limit of the arc of re- fledtion ; fuch rays as fall jufl above sd, and juft be¬ low ji, will be reflected from nearly the fame point p, as appears from what has been already Ihown. Thefe rays therefore will be parallel, becaufe they are reflec¬ ted from the fame point /) ; and they will likewife be contiguous, becaufe they all of them enter the drop at one and the fame place very near to d. Confe¬ quently, fuch rays as enter the drop at d, and are re¬ lieved from p the limit of the arc of refieVion, will be cfteChial; fince, when they emerge at the fore part of the drop between a and y, they will lie both parallel and contiguous. If we can make out hereafter that the rainbow is produced by the rays of the fun which are thus reflec¬ ted from drops of rain as they fall whilit the fun Ihines upon-them, this propofition may ferve to ihow us, that this appearance is not produced by any rays that fall upon any part, r.nd are rcflecled from any part of thofe drops : fince tins appearance cannot be produced by any rays but thofe which are effedtual ; and efftVual rays muft always enter each d op at one certain place in the fore-part of it, and muft likewife be refleVed fiom one certain place in the hinder luriace. When rays that are effefiual emerge from a drop of rain after one refe Si on and two rejratlions, thofe which are mof refrangible will, at their etnerfon, make a lefs angle with the incident rays than thofe do which are leaf refrangible ; and by this means the rays of different colours will befeparated from one another. T’hte Let/A (fig. 10.) be effeVual violet rays Cl-CLK. emerging from the drop at fg ; and fn, gp, efFeVual red rays emerging from the fame drop at the fame place. Now, though all the violet rays are parallel to one another, becuife they are fuppofed efteVual, and though all the red rays are likewife parallel to one another for the fame reafon ; yet the violet rays will not be parallel to the red rays. Thefe rays, as they have different colours, and different degrees of re- I C S. 323 frangibility, will diverge from one another ; any vio- let ray g i, which emerges at g, will diverge from , ff0 ^ any red ray gp, which emerges at the fame place. Now, both the violet ray g z, and the red ray gp, as they piL out of the drop of water into the air, will be refracted from the perpendicular /o. But the violet ray is more refrangible than the red one ; and for that reafon g i, or the refrafted violet ray, will make a greater angle with the perpendicular than ^ the re¬ fracted red ray ; or the angle ig 0 will be greater than the angle/>£0. Suppofe the incident ray r ^ to be continued in the direVion rand the violet ray ig to be continued backward in the direction ik, till it meets the incident ray at k. Suppofe likewife the red my pg to be continued backwards in the fame manner, till it meets the incident ray at w. The angle iks is that which the violet ray, or moft lefrangible ray at its emerfion, makes with the incident ray ; and the angle/>wj is that which the red ray, or lead re¬ frangible ray at its emerfion, makes with the incident ray. The angle z’^r is lefs than the angle/)‘zur. For, in the triangle, g w k, g w s, ov p w s, is the external angle at the bafe, and g k w or i k s is one of the in¬ ternal oppofite angles; and either internal oppofitc angle is lefs than the external angle at the bafe. (Euc. b. I. prop. 16.) What has been (hown to be true o£ the rays g i and gp might be fhown in the fame man¬ ner of the rays fh and fn, or of any other rays that emerge refpeVively parallel to gi and gp. But all the effeVual violet rays are parallel to ^ i, and all the effeVual red rays are parallel to g p. Therefore the effectual violet rays at their emerfion make a lef* angle with the incident ones than the effectual red ones. And for the fame reafon, in all the other forts of rays, thofe which are moft refrangible, at their emerfion from a drop of rain after one reflection, will make a lefa angle with the incident rays, than thofe do which are lefs refrangible. Or otherwife : When the rays g i and gp emerge at the fame pointy, as they both come out of water into air, and confequently are refraCted from the perpen¬ dicular, infteari of going flraight forwards in the line eg continued, they will both be turned round upon the pointy from the perpendicular ^ 0. Nowit is eafy to conceive, that either of thefe lines might be turned in this manner upon the point g as upon a centre, till they became parallel to $ £ the incident ray. But i£ either of thefe lines or rays were refraVed fo much from g 0 as to become parallel to s b, the ray fo much refraVed, would, after emerfion, make no angle with s k, becaufe it would be parallel to it. And confe¬ quently that ray which is moft turned round upon the pointy, or that ray which is moft refrangible, will af¬ ter emerfion be neareft parallel to the incident ray, or will make the lea ft angle with it. The fame may be proved of all other rays emerging parallel to g i and gp refpeVively, or of all effeCtual rays; thofe which are moil; refrangible will after ernerfi >n make a lefs angle with the incident rays, than thofe do which are leaft refrangible. But fince the effeVual rays of different colours make different angles with s k at their emerfion, they will be feparated from one another : fo that if the eye was placed in the beam fg h i, it would receive only rays of one colour from the drop xagv; and if it was placed S 1 2 ia 324 Of the Rainbow. OPT in the beam fgnp, It would receive only rays of fome other colour. The angle s wp, which the lead refrangible or red rays make with the incident ones when they emerge fo as to be effectual, is found by calculation to be 42 degrees 2 minutes. And the angle ski, which the moil refrangible rays make with the incident ones when they emerge fo as to he effe£lual, is found to be 40 degrees 17 minutes. The rays which have the in¬ termediate degrees of refrangibility, make with the in¬ cident ones intermediate angles between 42 degrees 2 minutes, and 40 degrees 17 minutes. Jf a Tine is fuppofed to he drawn from the centre of the fun through the eye of the fpeclator% the angle which any cffedual ray, after two refractions and one refection, males with the incident ray, will be equal to the angle •which it makes with that line. Let the eye of the fpedtator be at i, (fig. 10.) an^ ^ \ttqt be the line fuppofed to be drawn from the centre of the fun through the eye of the fpeftator; the angle g i t, which any effectual ray makes with this line, will be equal to the angle i Is, which the fame ray makes with the incident ray s b or s l. If r is a ray coming from the centre of the fun, then fince q t is fuppofed to be drawn from the fame point, thefe two lines, up¬ on account of the remotenefs of the point from whence they are drawn, may be looked upon as parallel to one another. But the right line l i croffing thefe two parallel lines will make the alternate angles equal. (Euc. b. I. prop. 29.) Therefore k itoxgi t is equal to r i. 2,06 Two rain¬ bows feen at.once. When the fun fines upon the drops of rain as they are falling, the rays that come from thofe drops to the eye of a fpedator, after one refedion and two refradions, produce the primary rainbow. If the fun {bines upon the rain as it falls, there are commonlyfeen two bows, as AFB, CHD, (fig. xi.); or if the cloud and rain does not reach over that whole fide of the Iky where the bows appear, then only a part of one or of both bows is feen in that place where the rain falls. Of thefe two bows, the innermoft AFB is the more vivid of the two, and this is called the primary bow. The outer part TFY of the pri¬ mary bow is red, the inner part VFX is violet ; the intermediate parts, reckoning from the red to the vio¬ let, are orange, yellow, green, blue, and indigo. Sup- pofe the fpeftator’s eye to be at O, and let LOP be an imaginary line drawn from the centre of the fun through the eye of the fpedator : if abeam of light S coming from the fun falls upon any drop F ; and the rays that emerge at F in the line FO, fo as to be ef- feftual, make an angle FOP of 42° 2' with the line LP ; then thefe effeClual rays make an angle of 42°2' with the incident rays, by the preceding propofition, and confequently thefe rays will be red, fo that the drop F will appear red. All the other rays, which emerge at F, and would be effedual if they fell upon the eye, are refrafted more than the red ones, and confequently will pafs above the eye. If a beam of tight S falls upon the drop E ; and the rays that emerge at E m the line EO, fo as to be effeaual, make an angle EOP of 40° 17' with the line LP ; ■ CK e it dual rays make likewife an angle of ^ C b. Part II, 40° 17' with the incident rays, and the drop E will Of the appear of a violet colour. All the other rays, which Rahibow. emerge at E, and would be effe&uiil if they came to ^ 'r~mJ the eye, are refracted lefs than the violet ones, and therefore pafs below the eye. '1 he intermediate drops between F and E will for the fame reafons be of the intermediate colours. Thus we have Ihown why a fet of drops from F to E, as they are falling, fhould appear of the primary colours, red, orange, yellow, green, blue, indigo, and violet. It is not neceffary that the feveral drops, which produce thefe colours, finould all of them fall at exadly the fame diftance from the eye. The angle FOP, for inftance, is the fame whether the diftance of the drop from the eye is OF, or whether it is in any other part of the line OF fomething nearer to the eve. And whilft the angle FOP is the fume, the angle made by the emerging and incident rays, and confequently the colour of the drop, will be the fame. This is.equally true of any other drop. So that although in the figure the drops F and E are reprefented as falling perpendicularly one under the other, yet this is not neceffary in order to produce the bow. But the coloured line FE,- which we have already accounted for, is only the breadth of the bow. It ftill remains to be fhown, why not only the drop F Ihould appear red, but why all the other drops quite from A to B in the arc ATFYB fhould appear of the fame colour. Now it is evident, that wheiever a drop of rain is placed, if the angle which the effe&ual rays make with the line LP is equal to the angle FQPV that is, if the angle which the effe&ual rays make with the incident rays is 420 2', any of thofe drops will be red, for the fame reafon that the drop F is of this colour. If FOP was to turn round upon the line OP, fo that one end of this line fttould always be at the eye, and the other be at P oppofite to the fun ; fuch a motion of this figure would be like that of a p.tir of compaffea turning round upon one of the legs OP with the open¬ ing FOP. In this revolution the drop F would de- feribe a circle, P would be the centre, and ATFYB would be an arc in this circle. Now fince, in this mo¬ tion of the line and drop OF, the angle made by FO with OP, that is, the angle FOP, continues the fame; if the fun was to fhine upon this drop as it revolves, the effedlual rays would make the fame angle with the incident rays, in whatever part of the arc ATFYB the drop was to be. Therefore, whether the drop is at A, or at T, or at Y, or at B, or wherever elfe it is in this whole arc, it would appear icd, as it does at F, The drops of rain, as they fall, are not indeed turned round in this manner : but then, as innumerable of them are falling at once in right lines from the cloud, whilft one drop is at F, there will be others at Y, at T, at B, at A, and m every other part of the arc ATFYB : xand all thefe drops will be red for the fame reafon that the drop F would have been red, if it had been in the fame place. Therefore, when the fun fhines upon the rain as it falls, there will be a red arc ATFYB oppofite to the fun. In the fame manner, becaufe the drop E is violet, we might prove that any other drop, which, whilft it is falling, is in any part of the arc AVEXB, will be violet; and confequently, at the fame time that thejed arc ATFYB appears, there will like- wife' Plate CCCLX. 207 "Why the arc of the primary rainbow is never greater than afemi- circle. PartII. ° . P. T Of the wife be a violet arc AVEXB below or within it. FE Rainbow. jg t^e diftance between thefe two coloured areo; and from what has been faid> it followsj tnat the interme” diate fpace between thtfe two arcs will be filled up with arcs of the intermediate colours, orange, yellow, blue, green, and indigo. All thefe coloured arcs to¬ gether make up the primary rainbow. - The primary rainbow is. never a greater arc than a fe- micircle. Since the line LOP is drawn from the fun through the eye of the fpeftator, and fince P (fig- 9 ) is the centre of the rainbow ; it follows, chat the centre of the rainbow is always oppofite to the fun. The angle FOP is an angle of 420 2', as was obferved, or F the higheft part of the bow is 420 2' from P the centre of it.° If the fun is more than 42° 2' high, P the centre of the rainbow, which is oppofite to the fun, will ■be more than 42° 2' below the horizon; and con- fequently F the top of the bow, which is only 42y 2' from P, will be below the horizon ; that is, when the fun is more than 42“ 2' high, no primary rain¬ bow will be feen. If the fun is fomething lefs than 42“ 2' high, then P will be fomething lefs than 42^ 2' below the horizon; and confequently F, which is only 42“ 2' from P, will be juft above the horizon ; that is, a fmall part of the bow at this height of the fun will appear clofe to the ground oppofite to the fun. If the fun is 20° high, then P will be 20° below the ho¬ rizon ; and F the top of the bow, being 42 2 from P, will be 2 2° 2' above the horizon ; therefore, at this height of the fun, the bow will be an arc of a circle whole centre is below the horizon ; and conie- quently that arc of the circle which is above the hori¬ zon, or the bow, will be lefs than a femicircle. If the fun is in the horizon, then P, the centre of the bow, will be in the oppofite part of the horizon; F, the top of the bow, will be 420 2' above the horizon; and the bow itfelf, becnufe the hoiizon pafles through the centre of it, will be a femicircle. More than a femi- circle can never appear; hecaufe if the bow was more than a femicircle, P the centre of it muft be above the horizon ; but P is always oppofite to the fun, there¬ fore P cannot be above the horizon, unlefs the fun is below it; and when the fun is fet, or is below the ho¬ rizon, it cannot ftiine upon the drops of rain as they fall; and confequently, when the fun is below the ho¬ rizon, no bow at all can be feen. When the rays of the fun fall upon a drop of rain, fame of them, after two reflexions and two ref radians, may come to the eye of a fpedator, who has his back to¬ wards the fun and his face towards the drop. If HGW (fig. 12.) is a drop of rain, and parallel rays coming from the fun, as z y w, fall upon the lower part of it, they will be refracted towards the perpendiculars v 1, w l, as they enter into it, and will defcribe fome fuch lines as v h, w i. At h and i great part of thefe rays will pafs ©uc of the drop ; but fome of them will he reflefted from thence in the lines h f, i rr. At y'and^ again, great part of the rays that were reflefted thither will pafs out of the drop. But thefe rays will not come to the eye of a fpettator at 0. However, here again all the rays will not pafs out; but fome few will be reflected from/and ", in I G S. fome fuch lines as/d, gb; and thefe, when they emerge out of the drop of water into the air at b and d, will be refradfted from the perpendiculars, and, de- fcribing the lines dt, bo, may come to the eye of the fpedfator who has his back towards the fun and his face towards the drop. Thofe rays, which are parallel to one another after they have been once refraded and once rejleded in a drop of rain, will be ejfedual when they emerge after two re- fradions and two rejledions. No rays can be effectual, unlefs they are contigu¬ ous and parallel. From what was faid, it appears, that when rays come out of a drop of rain contiguous to one another, either after one or after two reficdtions, they muft enter the drop nearly at one and the fame place. And if fuch rays as are contiguous are paral¬ lel after the firft reflection, they will emerge parallel, and therefore will be effectual. Let zv and yw be contiguous rays which come from the fun, and are pa¬ rallel to one another when they fall upon the lower part of the drop, fuppofe thcie rays to be refracted at v and w, and to be reflected at h and i; it they are parallel to one another, as h f, g i, after this firft reflection, then, after they are reflected a fecond time from / and g, and refraCted a fecond time as they emerge at d and b, they will go out of the drop paral¬ lel to one another in the lines dt and bo, and will there¬ fore be effectual. The rays zv, yw, are refradted towards the perpen¬ diculars vl, wl, when they enter the drop, and will be made to converge. As thefe rays are very oblique, their focus will not be far trom the furfaee vw. If this focus is at h, the rays, after they have palled the focus, will diverge from thence in the directions k h, k i; and if k i is the principal focal diftance of the concave reflecting furface h i, the reflected rays hf, ig, will be parallel. Thefe rays ef, ig, are reflected again from the concave furface fg, and will meet in a focus at e, fo that ge will be the principal focal diftance of this reflecting iurface f g. And becaufe h i and fg are parts of the fame fphere, the principal focal diitances^z and k i will be equal to one another. When the rays have palled the focus e, they will diverge from thence in the linese/ eb: and we are to Ihow, that when they emerge at d and b, and are refraCted there, they will become parallel. Now if the rays vk, wk, when they have met at k, were to be turned back again in the directions k v, k w}' and were to emerge at v and w, they would be refrac¬ ted into the lines of their incidence, vz, wy, and there¬ fore would be parallel. But fince is equal to ii, as has already been Ihown, the rays ed, eb, that diverge from e, fall in the fame manner upon the drop at d and b, as the rays kv, kw, would fall upon it at v and w 5 and e d, eb, are juft as much inclined to the refracting furface db, as kv, kw, would be to the furface v w. From hence it follows, that the rays ed, eb, emerging at d aud b, will be refracted in the fame manner, and will have the fame direction in refpeCl of one another, as kv, kw, would have. But kv and kw would be pa¬ rallel after refraction. Therefore ed and eb will emerge in lines dp, bo, So as to be parallel to one another, and coniequently fo as to be effectual. When. 3*6 O Of the f Rainbow. When rays that are eJfeBual emerge from a drop of rain v-.—J after two refections and two refractions^ thofe which are mnjl refrangible will at their emerfon make a greater angle with the incident rays than thofe do which are leaf re frangible ; and by this means the rays of different colours will be feparated from one an¬ other. If rays of different colours, which are differently re- ftangib,e> emerge at any point b (fig. 12.), thefe rays ** ^ ’ will not be all of them equally refrn&ed from the per¬ pendicular. Thus, if £0 is a red ray, which is of all others the Jeaft refrangible, and is a violet ray, which is of all others the mofl refrangible; when thefe two rays emerge at the violet ray will be refra&ed more from the perpendicular b x than the red ray, and the refradted angle xbm will be greater than the refrac¬ ted angle xbo. From hence it follows, that thefe two rays, after emerfion, will diverge from one another. In like manner, the rays that emerge at d will diverge from one another; a red ray will emerge in the line dp, a violet ray in the line dt. So that though all the elFedlual red rays of the beam bdmt are parallel to one another, and all the effedfual red rays of the beam bdop are like wife parallel to one another, yet the violet rays will not he parallel to the red ones, but the violet fceam will diverge from the red beam. Thus the rays of different colours will be feparated from one another. I his will appear farther, if we confider what the propofition affirms, That any violet or molt refran- git le ray will make a greater angle with the incident rays, than any red or leaft refrangible ray makes with the fame incident rays. Thus yw is an incident ray, bm a violet ray emerging from the point b, and bo a red ray emerging from the fame point; the angle which the violet ray makes with the incident one is yrm, and that which the red ray makes with it is yso. Now yrm is a greater angle than yso. For in the tri¬ angle brs the internal angle brs is lefs than bsy the external angle ct the bafe. (Fuel. B. I. prop. 16.) But yrm is the complement of brs or of bry to two right •ones, and yso is the complement of bsy to two right ones. 1 herefore, fince bry is lefs than bsy, the com¬ plement of bry to two right angles will be greater than the complement of bsy to two right angles; or yrm will be greater thanyjo. Or otherwife: Both the rays taand bm, when they are refradted in palling out of the drop at b, are turned round upon the point b from the perpendicular lx. Now either of thefe lines ho or bm might be turned round in this manner, till it made a right angle with yw. Confequently, that ray which is moft turned round upon b, or which is mofl refrafled, will make an angle with yw that will be nearer to a right one than that ray makes with it which is leaPc turned round upon b, or which is lead refraaed. Therefore that ray which is mofl refraaed will make a greater angle with the incident ray than that which is leafl refraaed. But fince the emerging rays, as they are differently re rangtb e, make different angles with the fame inci- dent rssjyw, the refraaion which theyfuffer at emer- tion will feparate them from one another. I c S. part; if. culation to be f 5 and the angle yso, which the Of the leafl refrangible or red rays make with the incident Raii:f,ow. ones, is found to be qo0 57': the angles, which the rays of the intermediate colours, indigo, blue green, yellow, and orange, make with the incident rays, are intermediate angles between 54°7f and S0°Si'• If a line is fuppofed to be drawn from the centre of the fun through the eye of the fpeclutor ; the angle which, after two refractions and two refections, any effectual ray makes with the incident ray, will be equal to the angle which it makes with that line. The angle yrm, which the mofl refrangible or vio- rays make with the incident ones, is found by cal- It yw (fig. 12) is an incident ray, £0 an effedlual ray, and a line drawn from the centre of the fun through 0 the eye of the fpedator ; the angle yso, which the effedlual ray makes with the incident ray, is equal to son the angle which the fame effectual ray- makes with the line q n. Foryw and qn, confidered as drawn from the centre of the fun, are parallel; bo croffes them, and corfequently makes the alternate angles y jo, son, equal to one another. Eucl. B. I Prop. 29. IVhen the fun fines upon the drops of rain as they are falling, the rays that come from thefe drops to the eye of a fpetlator, after two refedions and two ref radians, produce the fecondary rainbow. The fecondary rainbow is the outermoft CHD,>rjie^c*n# fig. 1 1. When the fun fhines upon a drop of rain H; dary rain- and the rays HO, which emerge at H fo as to be ef-bow produ* feftual, make an angle HOP of 54 line drawn from the fun through the eye of the fpec- tator ; the fame effa&ual rays will make likewife an refra&ioa* angle of 54°7' with the incident rays S, and the rays which emerge at this angle are violet ones, by what was obferved above. Therefore, if the fpeftator’s eye is at O, none but violet rays will enter it : for as all the other rays make a lefs angle with OP, they will fall above the fpeftator’s eye. In like manner, if the effe&ual rays that emerge from the drop G make an angle of 50°sf with the line OP, they will likewife make the fame angle with the incident rays S ; and confequently, from the drop G to the fpedator’s eye at O, no rays will come but red ones; for all the other rays, making a greater angle with the line OP, will fall below the eye at O. For the fame reafon, the rays emerging from the intermediate drops between H and G, and coming to the fpetlator’s eye at O, will emerge at intermediate angles, and therefore will have the in¬ termediate colours. Thus, if there are feven drops from H to G inclufively, their colours will be violet, indigo, blue, green, yellow, orange, and red. This coloured line is the breadth of the fecondary rainbow. Now, if HOP was to turn round upon the line OP, like a pair of compaffes upon one of the legs OP with the opening HOP, it is plain from the fuppofition, that, in fuch a revolution of the drop H, the angle HOP would be the fame, and confequently the emer¬ ging rays would make the fame angle with the inci¬ dent ones. But in fuch a revolution the drop would deferibe a circle of which P would be the centre, and CNHRD an arc. Confequently, fince, when the drop is at N, or at R, or anywhere elfe in that arc, the emerging rays make the fame angle with the incident ones as when the drop is at H, the colour of the drop will Part II. OPT Oi the will be the fame to an eye placed at 0, whether the Rainbow, ;3 at or at H, or at R, or anywhere elfe m ^ - J that arc. Now, though the drop does not thus turn round as it falls, and does not pals through the feveral parts of this arc, yet, fince there are drops of rain fall¬ ing everywhere at the fame time, when one drop is at H ’ there will be another at R, another at N, and others in all parts of the arc ; and thefe drops will all of them be violet-coloured, for the fame reafon that the drop H would have been of this colour if it had been in any of thofe places. In like manner, as the drop G is red when it is at G, it would likewifs be red in any part of the arc CWGQD 5 and fo will any other drop, when, as it is falling, it comes to any part of that arc. Thus as the fun fhines upon the rain, whilll it falls, there will be two arcs produced, a violet coloured one CNHRD, and a red one CWGQD; and for the fame reafons the intermediate fpace between thefe two arcs will be filled up with arcs of the intermediate colours. All thefe arcs together make up the fecondary rain¬ bow. The colours of the fecondary rainbow are fainter than thofe of the primary rainbow ; and are ranged in the contrary order. ‘Wli2°the The primary rainbow is produced by fuch rays as colours of have been only once refle&ed ; the fecondary rainbov/ the fecon- jg produced by fuch rays as have been twice rellefted. dary rain- gut at every refle&ion fome rays pafs out of the drop fainted than °f ra'n without being refltfted; fo that the oftener the thofe of the rays are refle&ed, the fewer of them are left. There- primary, fore the colours of the fecondary bow are produced by and ranged fewer rays, and confequently will be fainter, than the in a con- . rbi. • t trary order. colour8 of t!^e Pnmary bow; . r , f In the primary bow, reckoning from the outiide of it, the colours are ranged in this order; red, orange, yellow, green, blue, indigo, violet. In the fecondary bow, reckoning from the outfide, the colours are vio¬ let, indigo, blue, green, yellow, orange, red. So that the red, which is the outermoft or higheft colour in the primary bow, is the innermoft or lowelt colour in the fecondary one. Now the violet rays, when they emerge fo as to be effe&ual after one reflexion, make a lefs :ngle with Plate tbe *nc^ent ray3 tban tbe re^ ones> confequently the CCCJLX. violet rays make a lefs angle with the lines OP (fig. 11.) than the red ones. But, in the primary rainbow, the rays are only once reflefled, and the angle which the effedlual rays make with OP is the difiance of the co¬ loured drop from P the centre of the bow. Therefore the violet drops, or violet arc, in the primary bow, will be nearer to the centre of the bow than the red drops or red arc; that is, the innermoft colour in the pri¬ mary bow will be violet, and the outermoft colour will be red. And, for the fame reafon, through the whole primary bow, every colour will be nearer to the centre P, as the rays of that colour are more re¬ frangible. But the violet rays, when they emerge fo as to be effectual after two refle£tions, make a greater angle with the incident rays than the red ones; confequently the violet rays will make a greater angle with the line OP, than the red ones. But in the fecondary rain¬ bow the rays are twice refle&ed, and the angle which effectual rays make with OP is the dillance of the co- Dr Bar- I C S. 327 loured drop from P the centre of the bow. Therefore appa- tlw violet drops or vio'et arc in the fecondary bow will ie!£cp;Je* be farther from the centre of the bow than the red 0bje ^ . great diftance. This he fays is confirmed by our be- 212 ing furprifed to find, upon approaching fuch objedls,M le Cat,» that they are fo much nearer to us, as well as fo ^uch ^fCt°“ent of fmaller, than we had imagined. largenefs of Among other cafes concerning vifion, which fellobje&s m under the confideration of M. de la Hire, he men-m*^* tions one which is of difficult folution. It is when a candle, in a dark place, and fituated beyond the limits of diftindl vifion, is viewed through a very nar¬ row chink in a card ; in which cafe a confiderable number of candles, fometimes fo many as fix, will be feen along the chink. This appearance he aferibes to fmall irregularities in the furface of the humours of the eye, the effect of which is not fenfible when rays are admitted into the eye through the whole extent of the pupil, and confequently one principal image effaces a number of fmall ones ; whereas, in this cafe, each of them is formed feparately, and no one of them is fo confiderable as to prevent the others from being per¬ ceived at the fame time. There are few perfons, M. de la Hire obferves, who have both their eyes perfedtly equal, not only with refpedt to the limits of diftindl vifion, but alfo with refpedt to the colour with which objedls appear tinged when they are viewed by them, efpecially if v one of the eyes has been expofed to the imprefiion of a ftrong light. To compare them together in this re- fpect, he diredts us to take two thin cards, and to make in each of them a round hole of a third or a fourth of a line in diameter, and, applying one of them to each of the eyes, to look through the holes on a white paper, equally illuminated ; when a circle of the paper will appear to each of the eyes, and, placing the cards properly, thefe two circles may be made to touch one another, and thereby the appearance of the fame objedl to each of the eyes may be compared to the greateft advantage. To make this experiment with the greateft exadtnefs, it is neceffary, he fays, that the eyes be kept ihut fome time before the cards be applied to them. M. de la Hire firft endeavoured to explain the caufe of thofe dark fpots which feem to float before the eyes, efpecially thofe of old people. They are moll vifible when the eyes are turned towards an uniform white objedl, as the fnow in the open fields. If they be fixed when the eye is fo, this philofopher fuppofed that they were occafioned by extravafated blood upon the retina. But he thought that the moveable fpots were occafioned by opaque matter fl@ating in the aqueous humour of the eye. He thought the vitreous humour was not fulficiently limpid-for this purpofe. By the following calculation, M. de la Hire gives us an idea of the extreme fenfibility of the optic nerves. One may lee very eafily, at the diftance of 4000 toifes, the fail of a wind-mill, 6 feet in diameter; and the eye being fuppofed to be an inch in diameter,the pidture ol this fail, at the bottom of the eye, will be of an inch, which is lefs than the 66Cth part of a line, and is about the 66th part of a common hair, or the hfth part of a fingle thread of filk. So fmall, therefore, mull one of the fibres of the optic nerve be, which he fay« Hate CCCLX Partir. o P T Apparent fays Is almbU inconceivable, fince each of thefe fibres place, &c. *s a fyjjg that contains fpirits. If birds perceive di* ofobjefts. ftant objea3 as wen as men, which he thinks very V probable, he obferves that the fibres of their optic 113 nerves muft be much finer than ouis. Berkeley’s perfon who firft took much notice of Dr Bar- account of row,g hypotiief,s was the ingenious Dr Berkeley, bifhop ment'fofm-of Cloyne, who diftinguifhed himfelf fo much by the ed concern-objedfions which he ftarted to the reality of a material ing diftance worldj and by his oppofition to the Newtonian doc^ bv confuted trlne ^ flllxiong. In his Effay towards a New Theory 10n' of Vifion, he obferves, that the circle formed upon the retina, by the rays which do not come to a focus, produce the fame confufion in the eye, whether they crofs one another before they reach the retina, or tend to do it afterwards ; and therefore that the judgment concerning diftance will be the fame in both the cafes, without any regard to the place from which the rays originally iffued ; fo that in this cafe, as, by receding from the lens, the confufion, which always accompanies the nearnefs of an objedl, increafes, the mind will judge that the objedt comes nearer. Smith’s ac- But, fays Dr Smith, if this be true, the objedl cuunt. ought always to appear at a lefs diftance from the eye than that at which obje.fts are feen diftindlly, which is not the cafe i and to explain this appearance, as well as every other in which a judgment is formed concerning diftance, he maintains, that we judge of it by the apparent magnitude of objects only, or chiefly $ fo that, fince the image growslarger as we recede from the lens through which it is viewed, we conceive the objedl to come nearer. He alfo endeavours to fhow, that, in all cafes in which glafles are ufed, we judge of diftance by the fame fimple rule; from which he concludes univerfally, that the apparent diftance of an objedl feen in a glafs is to its apparent diftance feen by the naked eye as the apparent magnitude to the naked eye is to its apparent magnitude in the glafs. But that we do not judge of diftance merely by the angle under which objedls are feen, is an obfervation as old as Alhazen, who mentions fevcral inftances, in which, though the angles under which obje&s appear US be different, the magnitudes are univerfally and in- Obje&cd toftantaneoufly deemed not to be fo. And Mr Robins brnsf^0* clearly fhows the hypothefis of Dr Smith to be con¬ trary to fadft in the moft common and fimple cafes. In microfcopes, he fays, it is impoffible that the eye Ihould judge the objeft to be nearer than the diftance at which it has viewed the objeft itfell, in proportion to the degree of magnifying. For when the micro- fcope magnifies much, this rule would place the image at a diftance, of which the fight cannot pofiibly form any opinion, as being an interval from the eye at Which no objedft can be feen. In general, he fays, he believes, that whoever looks at an objedl through a convex glafs, and then at the objed itfelf without the glafs, will find it to appear nearer in the latter cafe, though it be magnified in the glafs ; and in the fame trial with the concave glafs, though by the glafs the objed be diminifhed, it will appear nearer through the glafs than without it. But the moft convincing proof that the apparent diftance of the image is not determined by its apparent magnitude, is the following experiment. If a double convex glafs be held upright before fome luminous Vol. XIII, Part I. I ' C S. 329 objedj as a candle, there will be feen two images, Apparent one ered, and the other inverted. The full is made 0f0|,je(as, Amply by refledion from the neareft furface, the.—J fecond by refledion from the farther furface, the rays undergoing a refradion from the firft furface both be¬ fore and after the refledion. If this glafs has not tod ftiort a focal diftance, when it is held near the objed, the inverted image wiil appear larger than the other* and alfo nearer ; but if the glafs be carried off from the objed* though the eye remain as near to it as be¬ fore, the inverted image will diminifh fo much falter than the other, that, at length, it will appear very much lefs than it, but ftill nearer. Here, fays Mr Robins, two images of the fame objed are feen under one view, and their apparent diftances immediately compared ; and here it is evident, that thofe diftances have no neceflary connedion with the apparent mag¬ nitude. He alfo ftiows how this experiment may be made ftill more convincing, by flicking a piece of paper on the middle of the lens, and viewing it through a ftiort tube, sik M* Bouguer adopts the general maxim of Dr Bar- M. Bou- row, in luppoling that we refer objeds to the place from which the pencils of rays feemingly converge their entrance into the pupil. But when fays iffue from below the furface of a veffel of water, or any other refrading medium, he finds that there are always two different places of this feeming convergence ; one of them of the rays that iffue from it in the fame ver¬ tical circle, and therefore fall with different degrees of obliquity upon the furface of the refrading medium ; and another, of thofe that fall upon the furface with the fame degree t>f obliquity, entering the eye laterally with refped to one another. Sometimes, he fays, one of thefe images is attended to by the mind, ami fometimes the other, and different images may be ob- ferved by different perfons. An objed plunged in water affords an example, he fays, of this duplicity of images. If BA £ (fig. i.) be part of the furface of water, piate and the objed be at O, there will be two images ofcCCLST it in two different places; one at G, on the cauftic by refradion, and the other at E, in the perpendicu¬ lar AO, which is as much a cauftic as the other line. The former image is vifible by the rays ODM, O dmy which are one higher than the other, in their progrefs % to the eye whereas the image at E is made by the rays ODM, O e f, which enter the eye laterally. This, fays he, may ferve to explain the difficulty of Father Tacquet, Barrow, Smith, and many other authors, and which Newton himfelf confidered as a veiy diffi¬ cult problem, though it might not be abfolutely info- luble. G. W. Kraft has ably fupported the Opinion of Dr Barrow, that the place of any point, feen by reflec¬ tion from the furface ©f any medium, is that in which rays iffuing from it, infinitely near to one another* would meet; and confidering the cafe of a diftant ob¬ jed, viewed in a concave mirror, by an eye very near to it, when the image, according to Euclid and other WTiters, would be between the eye and the objed, and the rule of Dr Barrow cannot be applied ; he fays that in this cafe the fpeculum may be confidered as a plane, the effed being the fame, only the imaere is more obfeure. Tt Dr 33°. OPT Apparent Dr Porterfield gives a diftindl and comprehenfive of obkftt vi.ew of the natural methods of judging concerning the ». ') diftance of pbjedls. , 217 The conformation of the eye, he obferves, can be Pr PGrtrr- 0f no ufe to us with refpedt to objeds that are placed of thisVfubVwIth°Ut l^e Iimits of diftl'nc^ vifi°n. As the object, jetf. however, does then appear more or lefs confufed, ac¬ cording as ft is more or lefs removed from thofe li¬ mits, this confufion affifts the mind in judging of the diftance of the objedt ; it being always efteemed fo much the nearer, or the farther off, by how much the confufion is greater. But this confufion hath its li¬ mits alfo, beyond which it can never extend ; for when an object is placed at a certain diftance from the eye, to which the breadth of the pupil heaps no fen- fible proportion, the rays of light that come from a point in the objedt and pafs the pupil, are fo little di¬ verging, that they may be confidered as parallel. For a pidfure on the retina will not be fenfibly more con¬ fufed, though the objedt be removed to a much greater diftance. The moft univerfal, and frequently the moft fure means of judging of the diftance of objedls is. he fays, the angle made by the optic axis. For our two eyes are like two different ftations, by the aftiitance of which d 1 fiances are taken ; and this is the reafon why thofe perfonswho are blind of one eye, fo frequently mifs their mark in pouring liquor into a glafs, fnuff- mg a candle, and fuch other adlions as require that the diftance be exaftly diftinguifhed. To convince ourfelves of the ufefulnefs of this method of judging of the diftance of objeAs, he diredls us to fufpend a r ng in a thread, fo that its fide may be towards us and the hole in it to the right and left hand ; and taking a fmall rod, crooked at the end, retire from the ring two or three paces, and having with one hand cover¬ ed one of our eyes, to endeavour with the other to pafs the crooked end of the rod through the ring. i hb, fays he, appears very eafy ; and yet, upon trial, pei- haps once in icp times we {hall not fucceed, efpe- cially if we move the rod a little quickly. Our author obferves, that by perf#ns recollefting the time when they began- to be fubjedt to the mj- ilakes aliove mentioned, they may tell when it was that they loft the ufe ©f one of their eyes ; which many perfons are long ignorant of, and which may be See a circumftance of fome confequence to a phyfician *1° 360. * fecond method of judging of diftances De Chales limited to 120 feet; beyon final! And if he was to view the lame objects from fuch heights as fre¬ quently as he fees them upon the fame level.with him- felf in the ftreets, he fuppofes that they would appear to him juft of the fame magnitude from the top of the monument, as they do from a window one ftory. high. For this reafon it is, that ftatues placed upon very high buildings ought to he made of a larger iize than thofe which are feeu at a nearer diftance ; be- canfe all perfons, except archite£ls, are apt to imagine the height of fuch buildings to be much lefs than it really is. 1 he fourth method by which Dr Porterfield fays that we judge of the diftance of objedls, is the force with which their colour ftnkes upon our eyes. For if we be allured that two objects are of a fimilar and like colour, and that one appears more bright and lively than the other, we judge that the brighter object is the nearer of the two. The fifth method confifts in the different appearance of the fmall parts of objedls. When thefe parts appear diftinft, we judge that the objedl is near; but when they appear confufed, or when they do not appear at all, we judge that it is at a greater diftance. For the image of any objeeft, or part of an objeift, diminilhes as the diftance of it increafes. I he fixth and laft method by which we judge of the diftance of obje£ls is, that the eye does not repre- fent to our mind one objedl alone, but at the lame time a!! thofe that are placed betwixt us and the prin¬ cipal objedl, whofe diftance we are confidering ; and the more this diftan.ee is divided into feparate and di- ftinfl parts, the greater it appears to be. For this reafon, diftances upon uneven furfaees appear lefs than upon a plane :. for the inequalities of the furfaces, fuch as hills, and holes, and riveps, that lie low and out of fight, either do not appear, or hinder the parts that lie behind them from appearing; and fo the whole apparent diftance is diminilhed by the parts that do not Part M. ' OPT ^pj arent not eppear in it. This is the reafon that the banks of jlate, &C, a rjver appear contiguous to a diftant eye, when the ut objtC s. r-ver jow an(^ noj. feeni 219 Dr Porterfield very well explains feveral fallacies in Several fat vifion depending upon our mifiaking the difiances of lacicsol vi-Gj:je^g> Qf this kind, he fays, is the appearance of v!!ained. parallel lines, and long villas confifting of parallel rows of trees; for they feem to convetge more and more as they are farther extended Irom the eye. The reafon of this, he fays, is becaufe the apparent mag¬ nitudes of their perpendicular intervals are perpetual¬ ly di mini filing, while, at the fame time, we mifiake their diftance. Hence we may lee why, when two parallel rows of trees fiand upon an afeent, whereby the more remote parts appear farther off than they • really are, becaufe the line that meafuresthe length of the villas now appears under a greater angle than when it was horizontal, the trees, in inch a cafe, will feem to converge lefs, and fometimes, inftead of conver¬ ging, they will be thought to diverge. For the fame reafon that a long villa appears to converge more and more the farther it is extended from the eye, the remoter parts of a horizontal walk or a long Hour will appear to afeend gradually ; and objtdls placed upon it, the more remote they are the higher they will appear, trll the lafi be leen on a level with the eye ; whereas the ceiling of a long gallery appears to deicend towards a horizontal line, drawn from the eye of the Ipedtator. For this reafon, alfo, the lurface of the fta, feen from an eminence, feems to rife higher and higher the farther we look ; and the upper parts of high buildings feem to Hoop, or in¬ cline forwards over the eye below, becaufe they feem to approach towards a vertical line proceeding from the Ipedlator’s eye ; fo that llatues on the top of luch buildings, in order to appear upright, mufi recline., or bend backwards. Our author alio fiiows the reafon why a windmill, feen from a great difiance, is iometimes imagined to move the contrary way irom what it really dots, by our taking the ntaier end of the fail for the more re¬ mote. '1 he uncertainty we fometimes find in the comfe of the motion of a branch of lighted candles, turned round at a difiance, is owing, he fays, to the fame caufe ; as alfo our iometimes mifiaking a convex for a concave furiace, more eipecially in viewing feals and imprelfions with a convex glafs or a double mi- crofcope ; and laftly, that, upon coming in a dark night into a fireet, in which there is but one row of lamps, we often miftake the fide of the fireet they are on. ’ Far more light was thrown upon this curious fub- i je& by M. Bouguer. C, 52°r ht PTOPer method of drawing the appearance of thrown "up -two rows °* trees t*iat aPPear parallel to the eye, on this fub-is a problem which has exercifed the ingenuity ®f fe- jeeft by M. veral philofophers and mathematicians. That the ap- Bouguer. parent magnitude of objects decreales with the angle under which they are leen, has always been acknow¬ ledged. It is alfo acknowledged, that it is only by cullom and experience that we leant to form a judge¬ ment both of magnitudes and diitances. But in the application of theie maxims to the above mentioned problem, all perfons, before M. Bouguer, made uie of the real diftanoe inikad of the apparent one ; by I C S, 331 which only the mind can form its judgmetfi. _ Arid it Apparent is manifett, that, if any circumfiances contribute to make the diftance appear otherwiie than it is in rea-1„ ^ lity, the apparent magnitude ©1 the object will be affected by it; for the fame reafon* that, if the mag¬ nitude be mifnpprehended, the idea of the diftance will vary. For want of attending to this diftin&ion, Tacquet pretended to demonftrate, that nothing can give the idea of two parallel lines (rows of trees for m.tance) to an eye fituated at one of their extremities, but two hyperbolical curves, turned the contrary way ; and M. Varignon maintained, that in order to make a villa appear of the fame width, it mufi be made nai- rower, inftead of wider, as it recedes from the eye. M. Bouguer obferves, that very great difiances, and thofe that are coriliderably lefs than they, make near¬ ly the fame impreffion upon the eye. We, th-reiore, always imagine great difiances to be lels than they are; and for this reaion the ground plan of a long vifia al¬ ways appears to rile. The viiual rays come in a de¬ terminate direction ; but as we imagine that they ter¬ minate looner than they do, we neceflarily conceive that the place from which they iflue is elevated, li¬ very large plane, therefore, as AB, \Tg. 2.) viewed by piate an eye at O, will feem to lie in fuch a direCtioa as CCCLXf. ; and confequently lines, in order to appear truly parallel on the plane AB, mufi be drawn io as that they would appear parallel on the plane A£, and be from thence piojeded to the plane AB. To determine the inclination of the apparent ground- plan AT to the true ground-plan AB, our ingeni¬ ous author directs us^ to draw upon a piece of level ground two firaight lines of a lufficient iength (for which purpoft lines fafiened to fmall flicks are very convenient), making an angle of 3 or 4 degrees v, ith 1 one another. Then a perron, placing himieif within the angle, with his back towards the angular point, mufi walk backwards and forwards till he can fancy the lines to be parallel. In this ifiliation, a line drawn from the point of the angle thro" the place of his eye, will contain the fame angle with the true ground- plan which this does with the apparent one. M. Bouguer then fhows other mote geometrical methods of determining this inclination j and fays, that by thefe means he has often found it to be 4 or 5 degrees, though fometimes only 2 or 2l- degrees. The determination of this angle, he obferves, is variable ; depending upon the manner in which the ground is il¬ luminated and the intenfity of the light, the colour of the foil is alfo not without its influence, as well as the particular conformation of the eye, by which it is more or lefs affeCted by the fame degree of light, and alfo the part of the eye on which the object is paint¬ ed. When, by a flight motion of his head, he con¬ trived, that certain parts of the foil, the. image of which fell towards the bottom of his eye, fhouid fall towards the top of the retina, he always thought that this apparent inclination became a little greater. But what is very remarkable, and what he fays he can affure his reader may be depended upon, is, that if he look towards a rifmg ground, the difference be¬ tween tnt apparent ground-plan and the true one will be much more confiderabie, fo that they will fome¬ times make an angle of 25 or 30 degrees. Of this he T t 2 had 332 OPT Appare: t made frequent obfervations. Mountains, he fays, of^ob'edts beSIn to be inacceffible when their tides make an angle i . '■ from 35 to 37 degrees with the horizon, as then it is not poffible to climb th^m but by means of Hones or Ihrubs, to ferve as Heps to fix the feet on. In thcfe cafes, both he and his companions always agreed that , the apparent inclination of the fide of the mountain was 6o or 70 degrees. Plate Thef- deceptions are reprefented in fig. 3. in which, CCCLXI. when the ground plan AM, or AN, are much incli¬ ned, the apparent ground-plan A.?ra, or An, makes a very large angle with it. On the contrary, if the ground dips below the level, the inclination of the ap¬ parent to the true ground-plan diminifhes, till, at a certain degree of the Hope, it becomes nothing at all ; the two plans AP and A/> being the fame, fo that pa¬ rallel lines drawn upon them would always appear fo. if the inclination below the horizon is carried beyond the fituation AP, the error will increafe ; and what is very remarkable, it will be on the contrary fide; the apparent plan Ar being always below the true plan AR, fo that if a perfon would draw upon the plau AR lines that fhall appear parrdlel to the eye, they muft be drawn converging, and not diverging, as is ufual on the level ground; becaufe they mult be the projedtions of two lines imagined t© be parallel, on the plan Ar, which is more inclined to the horizon than AR. Thefe remarks, he obferves, are applicable to diffe¬ rent planes expofed to the eye at the fame time. For if 15H, fig. 4. be the front of a building, at the di- fiance of AB from the eye, it will be reduced in ap¬ pearance to the diftance A and the front of the building will be bh, rather inclined towards the fpec- tator, unlefs the difiance be inconfiderable. After making a great number of obfervations upon this fubjedl, our author concludes, that when a man Hands upon a level plane, it does not feem to rife fen- fibly but at fome diftance from him. The apparent plane, therefore, has a curvature in it, at that diftance, the form of which is not very eafy to determine; fo that a man Handing upon a level plane, of infinite ex¬ tent, will imagine that he Hands in the centre of a ba- fon. This is alfo, in fome meafure, the cafe with a perfon Handing upon the level of the fea. He concludes with obferving, that there is no dif¬ ficulty in drawing lines according to thefe rules, fo as to have any given effedl upon the eye, except when fome parts of the profpeft are very near the fpe£lator, and others very difiant from him; becaufe, in this cafe, regard muft be had to the conical or conoidal figure of a lurface. A right line palling at a fmall diftance from the obferver, and below the level of his eye, in that cafe almoft always appears fenfibly curved at a certain diftance from the eye ; and almoft all figures in this cafe are fubjeft to fome complicated optical alteration to which the rules of perfpedtive have not as yet been extended. If a circle be dr.nvn near our feet, and within that part of the ground which appears level to us, it will always appear to be a circle, and at a very confiderable diftance it will appear an ellipfe ; but between thefe two lunations, it will not appear to be either the one or the other, but will be like one of thqfe ovals of Defcartes, which is more curved on one of its fides than the other. On thefe principles a parterre, which appears dif- ^ ? C S. Part II< torted when it is feen in a low fituation, appears per- Apparent fe£lly regular when it is viewed from a balcony or P!ace> &«- any ocher eminence. Still, however,, the apparent ir- ollje&s- regularity takes place at a greater diftance, while the part that is near the fpedlator is exempt from it. - If AB, fig. 5. be the ground plane, and Aa be a per¬ pendicular, under the eye, the higher it is fituated, at O, to the greater diftance will T, the place at which the plane begins to have an apparent afeent along T6, be removed. All the varieties that can occur with refpeft to the vifible motion of objecls, are thus fuccindly fummtd up by Dr Porterfield under eleven heads. 1. An object moving very fwiftly is not feen, unlefs it be very luminous. Thus a cannon-ball is not feen if it is viewed tranfverfely : but if it be viewed accord¬ ing to the line it deferibes, it may be feen, fcecaufe its pi&ure continues long on the fame place of the retina; which, therefore, receives a more ftnfible impreffion from the objedl. 2. A live coal fwung brilkly round in a circle ap¬ pears a continued circle of fire, becaufe the impreffions made on the retina by light, being of a vibrating, and confequently of a lading nature, do not presently pe- riih, but continue till the coal performs its whole cir¬ cuit, and returns again to its former place. 3. If two objecls, unequally dillant from the eye, move with equal velocity, the more remote one will appear the flower ; or, if their celerities be propor¬ tional to their diftances, they will appear equally fwift. 4. If two objeffs, unequally diftant from the eye, move with unequal velocities in the fame direftion, their apparent velocities are in a ratio compounded of the diredft ratio of their true velocities, and the reci¬ procal one of their diftances from the eye. 5. A vifible obje6t moving with any velocity appears to be at reft, if the fpace deferibed in the interval of one fecond be imperceptible at the diftance of the eye. Hence it is that a near objeef moving very flowly, as the index of a clock, or a remote one very fwiftly, as a planet, feems to be at reft. 6. An obje£I moving with any degree of velocity will appear at reft, if the fpace it runs over in a fe¬ cond of time be to its diftance from the eye as 1 to 1400. 7. The eye proceeding ftraight from one place to another, a lateral object, not too far off, whether on the right or left, will feem to move the contrary- way. 8. The eye proceeding ftraight from one place to another, and being fenfible of its motion, diftant ob- jedls will feem to move the fame way, and with the lame velocity. Thus, to a perfon running eaitwards, the moon on his right hand appears to move the fame way, and with equal fwiftnefs; for, by reafon of its diltance, its image continues fixed upon the fame place of the retina, from whence we imagine that the object moves along with the eye. 9. If the eye and the object move both the fame way, only the eye much fwifter than the objedt, the laft will appear to go backwards. 10. If two or more objedts move with the fame velo¬ city, and a third remain at reft, the moveable ones will appear fixed, and the quiefeent in motion the 4 contrary of object1'- C)r Porter field’* ac- Part Hr OPT Apparent contrary way. Thus clouds m®ving* very fwiftly, their place, Sc. parts feem to preferve their fituation, and the moon to move the contrary way. ii. If the eye be moved witi great velocity, lateral obje&s at re It appear to move the contrary way. Thus to a perfon fitting in a coach, and riding briflcly through a wood, the trees feem to retire the contrary way ; and to people io a fhip, See. the ihores feem to recede. . At the conclufion of thefe obfervations, our author endeavours to explain another phenomenon of motion, MeKi * enucdwuLo uw r-— : count ofob- which, though very common and well known, had not, as far as he knew, been explained in a fatisfac- movetoa tory manner. It is this: If a perfon turns fwiftly giddy per- round, without changing his place, all obje&s about fonwhenhewjjj fecm to move round in a circle the contrary way; jeSts ap¬ pearing to move to a and they j this deception continues not only while the perfon are both at “ r . . , . , / r •/-_ ril. Jia Dr Wells accounts for thisph Doxnenon. himfelf moves round; but, which is more furprifing, it alfo continues for fome time after he ceafes to move, when the eye, as well as the obje&, is at abfo- lute reft. The reafon why obje&s appear to move roupd the contrary way, when the eye turns round, is not fo dif¬ ficult to explain : for though, properly fpeaking, mo¬ tion is not feen, as not being in itfelf the immediate obje& of fight; yet by the fight we eafily know when the image changes its place on the retina, and thence conclude that either the objeft, the eye, or both, are moved. But by the fight alone we can never deter¬ mine how far this motion belongs to the object, how far to the eye, or how far to both. If we imagine the eye at reft, we aferibe the whole motion to the obje&, though it be truly at reft. If we imagine the objed at reft, we aferibe the whole motion to the eye, though it belongs entirely to the objed; and when the eye is in motion, though we are fenlible of its motion, yet, if we do not imagine that it moves fo fwiftly as it really does, we aferibe only a part of the motion to the eye, and the reft: of it we aferibe to the objed, though it be truly at reft. This laft, he fays, is what happens in the prefent cafe, when the eye turns round; for though we are fcnfible of the motion of the eye, yet we do not apprehend that it moves fo faft as it really does ; and therefore the bodies about appear to move the contrary way, as is agreeable to experience. But the great difficulty ftill remains, via. Why, after the eye ceafcs to move, ohje&s ftiould, for iome time, ftill appear to continue in motion, though their pidutea on the retina be truly at-reft, and do not at all change their place. This, he imagined, proceeds from a miftake we are in with refped to the eye, which, though it be abfolutely at reft, we neverthelefs conceive as moving the contrary way to that in which it moved before ; from which miftake, with re¬ fped to the motion of the eye, the obje&s at reft will appear to move the fame way which the eye is ima¬ gined to move ; and, confcquently, will feem to con¬ tinue their motion for fome time after the eye is at reft. This is ingenious, but perhaps not juft. An ac¬ count of this matter, which feems to us more fatis- e fadory, has been lately given to the public by Dr Wells. “ Some of the older writers upon op¬ tics (fays this able philofopher) imagined the vifive fpirfts to be contained in the head, as.water is in a ICS. 335 veffel; which, therefore, when cnce put in motion by Apparent, the rotation of our bodies, muft continue in it for fome time after this has ceafed ; and to this real cir- ^——< cular movement of the viiive fpirits, while the body is at reft, they attributed the apparent motions of ob¬ je&s in giddinefs. Dechales faw the weaknefs of this hypothefis ; and conjedured, that the phenome¬ non might be owing to a real movement of the eyes; but produced no fad in proof of his opinion. Dr Por¬ terfield, on the contrary, fuppofed the difficulty oi explaining it to confilt in ftiowing, why objects at reft appear in motion to an eye which is aifo at reft 1 ho folution he offered of this reprefentation of the phe¬ nomenon, is not only extremely ingenipns, but is I believe the only probable one which can be given. Ic does not apply, however, to the fad which truly ex- ifts ; for I ihall immediately (how, that the eye is not at reft, as he imagined. The laft author 1 know of who has touched upon this fubjed is Dr Darwin. His words are, ‘ When any one turns round rapidly on one foot till he becomes dizzy, and falls upon the ground, the fpe&ra of the ambient objeds continue to prefent themf&ves in rotation, or appear to hbrate, and he feerns to behold them for fome time in mo¬ tion.’ I do not indeed pretend tounderftand his opi¬ nion fully; but this much feems clear, that if luch an apparent motion of the furrounding objeds depends in any way upon their fpe&ra, or the illufive repreienta- tions of thofe objeds, occafioned by their former im- preffions upon the retinas, no fimilar motion would be obferved, were we to turn ourfelves round with our eyes fhut, and not to open them till we became giddy; for in this cafe, as the furrounding objeds could ndt fend their pi&ures to the retinas, there would conle- quently be no fpe&ra to prefent themfelves afterward in rotation. But whoever will make the experiment, will find, that objeds about him appear to be equally in motion, when he has become giddy by turning him¬ felf round, whether this has been done with his eyes open or ffiut. I ffiall now venture to propofe my own opinion upon this fubjed. “ If the eye be at reft, we judge an objed to be Uro2n2^h3t in motion when its pi&ure falls in fucceeding times up- data we on different parts of the retina; and if the eye be in judge yifi- motion, we judge an objed to be at reft, as long as’:,le obie be¬ tween b and K, muft appear brighter than b, becaufe it fills a greater portion^ F with light. The point K ttfelf, and every other point iq the fpace KL, mull appear very luminous, fince they fend entire pencils of rays EKF, ELF, to the eye ; and the vifible bright* nefs of every point from L towards M, muft decreafe gradually, as from K to N , that is, the fpaces KN, LM, will appear as dim ihadowy borders, or fringes, adjacent to the edges of the opaque bodies. When the edge G is brought to touch the right line KF, the penumbras unite; and as loan as it reached ND F, the above phenomenon begins ; for it cannot pals that right line without meeting fome line a D dt drawn from a point between N and K, and, by inter¬ cepting all the rays that fail upon the pupil, render it invifible. In advancing gradually to the line KDE, it will meet other lines b D/, c Yd g. See. and there¬ fore render the points b, c, See. from N to K, fuccef- fively invifible ; and therefore the edge of the fixed opaque body CD muft feem to fwell outwards, and cover the whole fpace NK; while GH, by its motion, covers MK. When GH is placed at a greater diftance from the eye, CD continuing fixed, the fpace OP to be paffed over in order to intercept NK is lefs ; and therefore, with an equal motion of GH, the apparent fwelling of CD muft be quicker ; which is found true by experience* If ML reprefent a luminous objedl, and REFQ^ any plane expofed to its light, the fpace FQ^will be entirely ftiaded from the rays, and the fpace FE will be occupied by a penumbra, gradually darker, from E to F. Let now GH continue fixed, and CD move parallel to the plane EF; and as foon as it paffes the line LF, it is evident that the ftiadow QJ*’ will feerrt to fwell outwards ; and when CD reaches ME, fo as to cover with its fhadow the fpace RE, QJ’, by its extenfion, will cover FE. This is found to hold true likevvife by experiment. § 4. Of the Concave Figure of the Sky. This apparent concavity is only an optical ^eceP“pxt*2/rf tion founded on the incapacity of our organs of vifion the yjfible to take in very large diftances. — Dr Smith, in hishoriz non Complete Syftem of Optics, hath demonftrated, that,a plane if the furface of the earth was perfectly plane, the di-iur^acc‘ fiance of the vifible horizon from the eye would fcarce exceed the diftance of 5000 times the height of the eye above the ground, fuppofing the height of the eye between five and fix feet: beyond this diftance, 3- Fnrt IL OPT Corcavit/ all obje&a would appear In the vlfible horizon. For, pf the Sky jet QP be the height of the eye above the line PA 1 drawn upon the ground ; and if an object AB, equal CCOLXI. in height to PO, be removed to a dillance PA equal fig. 8. to 5000 times that height, it will hardly be vifible by reafon of the fmallnefs of the angle AOB. Confe- quently any diftance AC, how great foever, beyond A, will be invifible. For fince AC and BO are parallel, the ray CO will always cut AB in fome point D between A and B : and therefore the angle AOC, or AOD, will always be lefs than AOB, and therefore \D or AC will be invifible, Confequendy all objefts and clouds, as CE and FG, placed at all diftances beyond A, if they be high enough to be vifible, or to fubtend a bigger angle at the eye than AOB, will appear at the horizon AB ; becaufe the diftance AC is invifible. Why a Eng Hence, if wefuppofe a vafl long row of objedts, or a row of ob- vaft ionrr wall ABZY(fig. 9.), built upon this plane, and jedb ap its perpendicular diftance OA from the eye at O to LV.1 U1 ' he equal to or greater than the diftance Q a of the vifible horizon, it will not appear ftraight, but circular, as if it was built upon the circumference of the horizon acegy : and if the wall be continued to an iminenfe diftance, its extreme parts YZ will appear in the horizon at yz, where it is cut by a line'Oy pa. rallel to the wall. For, funpofing a ray YO, the angle YOy will become infenfibly. fmall. Imagine this infinite plane OAYy, with the wall upon it, to be turned about the horizontal line O like the lid of a box, till it becomes perpendicular to the other half of the horizontal plane LMy, and the wall parallel to it, like a vaft ceiling over head ; and then the wall will appear like the concave figure of the clouds over¬ head. But though the wall in the horizon appear in the figure of a femicircle, yet the ceiling will not, but much flatter. Becaufe the horizontal plane was a vifible furface, which fuggefted the idea of the fame diftances quite round the eye: but in the vertical plane extended between the eye and the ceiling, there is nothing that affe&s the fenfe with an idea of its parts but the common line Oy ; confequently the apparent diftances of the higher parts of the ceiling will be gra¬ dually diminifhed in afeending from that line. Now when the fky is quite overcaft with clouds of equal gravities, they will all float in the air at equal heights above the earth, and confequently will compofe a iur- face refembling a large ceiling, as flat as the vifible furface of the tarth Its concavity therefore is not real, but apparent : and when the heights of the clouds are unequal, fince their real fliapes and magni¬ tudes are all unknown, the eye can feldom diitinguifh the unequal diftances of thofe clouds that appear in the fame dire&ions, unlefs when they are very near us, or are driven by contrary currents ©i the air. So that the vifible ftiape of the whole furface remains alike in both cafes. And when the fky is either partly over¬ caft or partly free from clouds, it is matter of faft that we retain much the fame idea of its concavity as I ^ 219 when it was quite overcaft. Why the 'pfog concavity of the heavens appears to the eye, «>fthe iky which is the only judge of an apparent figure, to be a app. r. kfslefs portion of a fpherical furface than a hemifphere. than a he- J)1 Smith fays, that the centre of the concavity is tnifphcre. mijch ^elow tke eye . and by taking a medium among and four times greater th in the apparent diftance of its parts overhead. For let the arch ABCD repre-10, fent the apparent concavityof the fky, O the place of the eye, OA and OC the horizontal and vertical apparent diftances, whofe proportion is required, f irftobferve when the fun or the moon, or any cloud or ftar, is in fuch a pofition at B, that the apparent arches B A, BC, extended on each fi le of this object towards the horizon and zenith, feem equal to the eye; then taking the altitude of the objefl B with a quadrant, or a crofs-ftaff, or finding it by aftronomy fro.n the given time of obfervation, the angle AOB is known. JDrawing therefore the line OB in the pofition thus determined, and taking in it any point B at plea- fure, in the vertical line CO produced downwards, feek the centre E of a circle \BC, whofe arches BA, BC, intercepted between B and the leg of the tight angle AOC, fhall be equal to each other; then will this arch A BCD reprefent the apparent figure of the Iky. For by the eye we eftimate the diftance between any two objedls in the heavens by the quantity of fky that appears to lie between them ; as upon earth we eftimate it by the quantity of ground that lies be¬ tween them. The centre E may be found geometri¬ cally by conftru&ing a cubic equation, or as quickly and fufficiently ex.uft by trying whether the chords B A, BC, of the arch ABC drawn by conje£lure are equal, and by altering its radius B K till they are fo. Now in making feveral obfervations upon the iun, and fome others upon the moon and ftars, they feemed to our author to bifeeft the vertical arch ABC at B, when their apparent altitudes or the angle AOB was about 23 degrees ; which gives the proportion of OC to OA as 3 to 10 or as 1 to 3 nearly. When the fun was but 30 degrees high, the upper arch feemed always lefs than the under one; and, in our author’s opinion, always greater when the fun was about 18 or 20 de¬ grees high. $ 5. Of the Blue Colour of the Viy, and of Blue and Green Shadows. The opinions of ancient writers concerning the cO” Opinions cF lour of the fky merit no notice. The firft who gave the ancients any rational explanation was Fromondus. By him it refpe6Hng was fuppofed, that the blueneis of the iky proceeded ^ from a mixture of the white light of the fun with the black fpace beyond the atmofphere, where there is neither refraflion nor refle£lion. This opinion pre¬ vailed very generally even in modern times, and was maintained by Otto Guerick and all his cotemporaries, who aflerted that white and black may be mixed in fuch a manner as to make a blue. Mr Bouguer had recourfe to the vapours diffufed through the atmo¬ fphere, to account for the refkftion of the blue rays rather than any other. He feems however to fuppofe, that it arifes from the conftitution of the air itfelf^ whereby the fainter coloured rays are incapable of- making their way through any confiderable traft of it. Hence he is of opinion, that the colour of the air is properly blue; to which opinion Dr Smith feems alfo to have inclined. To this blue colour of the fky is owing the appear¬ ance of blue and green fhadows in the mornings and evenings, • 336 OPT Blue c^re.entH^.^Th.fe were firfl takea notice of by'M. , e y,' BufFon in the month of July 1742, when he obferved 23I that the fhadows of trees which fell upon a white wall Green flia- were green. He was at that time handing upon an eminence, and the fun was fetting in the cleft of a M Buffon tr,oun,;a‘n> ^at he appeared confiderably lower than the horizon. The Iky was clear, excepting in the weft, which, though free from clouds, was lightly (haded with vapours, of a yellow colour, inclining to red. Thtn the fun itfelf was exceedingly red, and w^s feemingly at leafl four times as large as he appears to be at mid-day. In thefe circumftances, he faw very diflindtly the fhadows of the trees, which were 30 or 40 feet from the white wall, coloured with a light green, inclining to blue. The fhadow of an ar¬ bour, which was three feet from the wall, was ex¬ actly drawn upon it, and looked as if it had been newdy painted with verdegrife. This appearance laft- ed near five minutes ; after which it grew fainter, and vanifhed at the fame time with the light of the (J32 fun. Blue fha- The next morning, at funrife, he went to obferve veiTb °h[er* 0t^er fhadows, upon another white wall ; but inftead ? of finding them green, as he expe&ed, he obferved that they were blue, or rather of the colour of lively indigo. The fky was ferene, except a flight covering of yeilowifh vapouis in the eaft; and the fun arofe be¬ hind a hill, fo that it was elevated above his horizon. In thefe circumftances, the blue fhadows were only vi- fible three minutes; after which they appeared black, and in the evening of the fame day he obferved the green fhadows exactly as before. Six days pafied without his being able to repeat his obfervations, on account of the clouds ; but the 7th day, at funfet, the fhadows were not green, but of a beautiful fky- blue. He alfo obferved, that the fky was in a great meafure free from vapours at that time ; and that the fun fet behind a rock, fo that it difappeared be¬ fore it came to his horizon. Afterwards he often obferved the fhadows both at funrife and fun fit ; but always obferved them to be blue, though with a great variety of fhades of that colour. He fhowed this phenomenon to many of his friends, who were as much furprifed at it as he himfelf had been ; but he fays that any perfon may fee a blue fhadow, if he will only hold his finger before a piece of white paper at fun- rife or funfet. Explana- The firft perfon who attempted to explain this phe- ti®n of thefe nomenon was the Abbe Mazeas, in a memoir of the xiaTttem't ^oc*ety ‘n Berlin for the year 1752. He obferved, «d by Abbe ^at when an opaque body was illuminated by the Mazeas. moon and a candle at the fame time, and the two fhadows were caft upon the fame white wall, that which was enlightened by the candle was reddifh, and that which was enlightened by the moon was blue. But, without attending to any othjer cireumftances, he fuppofed the change of colour to be occalioned by the diminution of the light; but M. Melville, and M. Bouguer, both independent of one another, feem to have hit upon the true caufe of this curious appear¬ ance, and which hath been already hinted at. The for¬ mer of thefe gentlemen, in his attempts to explain the blue colour of the fky, obferves, that fince it is cer¬ tain that no body aflumes any particular colour, but becaufe it reflects one fort of rays more abundantly NS 249. J 3 *34 Melville’s and Bou- guer’s ex¬ planation. I C* S. Part If, than the reft; and ft rice it cannot be fuppofed that the Blue colour conflituent parts of pure air are grofs enough to feoa- t^e rate any colours of themfelves ; we muft conclude with Sir Ifaac Newton, that the violet and blue making rays are reflected more copioufiy than the reft, by the finer vapours diffufed through the atmofphere, whofe parts are not big enough to give them the appearance of vifible opaque clouds. And he fhows, that in proper circumftances, the bluifii colour of the fky-light may be actually feert on bodies illuminated by it, as, he fays, it is objedfed fliould always happen upon this hy- pothefis. For that if, on a clear cloudlefs day, a fheet of white paper be expofed to the fun’s beams, when any opaque body is placed upon it, the fhadow which is illuminated by the fky only will appear remarkably bluifh compared with the reft of the paper, which re¬ ceives the fun’s direft rays. M. Bouguer, who has taken the moft pains with this fu' jeft, obferves, that as M. Buftbn mentions the fhadows appearing green only twice, and that at all other times they were blue, this is the colour which they regularly have, and that the blue was changed into green by fame accidental circumftance. Green, he fays, is only a compofition of blue and yellow, fo that this accidental change may have arifen from the mixture of fame yellow rays in the blue fhadow ; and that perhaps the wall might have had that tinge, fa that the blue is the only colour for which a general reafon is required. And this, he fays, muft be derived from the colour of pure air, which always appears blue, and which always refledls that colour upon all objects without diftin&ion ; but which is too faint to be perceived when our eyes are ftrongly affe&ed by the light of the fun, reflc&ed from other obje&s around us. Fo confirm this hypothefis, he adds fome curious obfervations of his own, in which this appearance is agreeably diverfified. Being at the village of Boucholtz in July 1764, he obferved the fhadows proje&ed on the white paper of his pocket-book, when the iky was clear. At half an hour paft 6 in the evening, when the fun wasCuriouS ob- about four degrees high, he obferved that the fhadowfervations of his finger was of a dark grey, while he held ther At diftance of three inches, the whole Ihadow was blue. At every obfervation, after having held the paper towards the Iky, he turned it towards the earth, which was covered with verdure ; holding it in fuch a manner, that the fun might ftune upon it while it received the lhadows of various bodies ; but in this pofition he could never perceive the lhadow to be blue or green at any inclination with refpeft to the fun’s rays. '' At feven o’clock, the fun being ftill about two de¬ grees high, the fhadows were of a bright blue, even when the rays fell perpendicularly upon the paper, but were the brighteft when it was inclined at an angle of 450. At this time he was furprifed to obferve, that a large tradt of Iky was not favourable to this blue co¬ lour, and that the (hadow falling upon the paper placed horizontally was not coloured, or at leaft the blue was very faint. This Angularity, he concluded, arofe from the fmall difference between the light of that part of the paper which received the rays of the fun and that which was in the fhade in this fituation. In a fitua- tion precifely horizontal, the difference would vanifh, and there could be no fhadow. Thus too much or too little of the fun’s light produced, but for different rea- fons, the fame effedt ; for they both made the blue light refledfed from the fky to become infenfible. This gentleman never faw any green fhadows, but when he made them fall on yellow paper. But he does not abfolutely fay, that green fhadows cannot be produ¬ ced in any other manner ; and fuppofes, that if it was en the fame wall that M. Buffon faw the blue fha¬ dows, feven days after having feen the green ones, the caufe of it might be the mixture of yellow rays, re- • fledled from the vapours, which he obferves were of s-,6 that colour. Blue flia- Thefe blue fhadows, our author obferves, are not dows not confined to the times of the fun-rifing and fun-fetting ; the morn-0 on the *9^ of July» when the fun has t¥ Sreateft in^s and force, he obferved them at three o’clock in the af- cvenings. ternoon, but the fun fhone through a mill at that time. If the fky is clear, the fhadows begin to be blue; when, if they be projected horizontally, they are eight times as long as the height of the body that produces them, that is, when the centre of the fun is 7° S' a- bove the horizon. This obfervation, he fays, was made in the beginning of Auguft. , Befides thefe coloured fhadows, which nre produced by the interception of the diredt rays of the fun, our author obferved others fimilar to them at every hour of the day, in rooms into which the light of the fun was refledted from lome white body, it any part of the dear fky could be feen from the place, and all unne- ceffary light was excluded as much as pofiible. Ob- ferving thefe precautions, he fays that the blue fha¬ dow s may be feen at any hour of the day, even with the diredt light of the fun ; and that this colour will difappear in all thofe places of the fhadow from which the blue fky cannot be feen. All the obfervations that our author made upon the yellow or reddifh borders of fhadows above-mention¬ ed, led him to conclude, that they v'ere occafioned by the interception of the Iky-light, whereby part of the Vol. XIII. Parti. 1 C S. 337 (hadow was illuminated either by the red rays refledl-Irradiations ed from the clouds, when the fun is near the horizon, ® or from fome terreftrial bodies in the neighbourhood.. -J * This conjedfure ia favoured by the neceffity he was under of placing any body near the paper, in order to produce this bordered fhadow, as he fays it is eafily demonftrated, that the interception of the fky-light can only take place when the breadth of the opaque body is to its diftance from the white ground on which the fhadow falls, as twice the fine of half the ampli¬ tude of the fky to its cofine. At the conclufion of his obfervations on thefe blue Another fhadows, he gives a fhort account of another kind of them, which, he does not doubt, have the fame ori- 1 gin. Thefe he often faw early in the fpring when he was reading by the light of a candle in the morning, and confequently the twilight mixed with that of his candle. In thefe circumftances, the fhadow that was made by intercepting the light of his candle, at the di¬ ftance of about fix feet, was of a beautiful and clear blue, which became deeper as the opaque body which made the fhadow was brought nearer to the wall, and was exceedingly deep at the diftance of a few inches only. But wherever the day-light did not come, the fhadows were all black without the leaft mixture of blue. § 6. 0/ the Irradiations of the Sun's Light appearing through the interjtices of the Clouds. This is an appearance which every one mull have obferved when the fky was pretty much overcaft with clouds at fome diftance from each other. At that time feveral large beams of light, fomething like the appear¬ ance of the light of the fun admitted into a fmoky room, will be feen generally with a very confiderable degree of divergence, as if the radiant point was fi- tuated at no great diftance above the clouds. Dr Smith obferves that this appearance is one of thofe which ferve to demonftrate that veiy high and remote objefts in the heavens do not appear to us in their real fhapes and pofitions, but according to their perfpe&ive projections on the apparent concavity of the fky. He acquaints us, that though thefe beams are generally feen diverging, as reprefented in fig. n. it is not al- Plate ways the cafe. He himfelf, in particular, once faw CCCLX1. them converging towards a point diametrically oppo-^^3^ fitetothe fun : for, as near as he could conjedture, the?in^rra_ point to which they converged was fituated as muchdiations ob- below the horizon as the fun was then elevated aboveterved by the oppofite part of it. This part is reprefented byDrSmith* the line fD?, and the point below it in oppofition to pjg I2> the fun is E ; towards which all the beams i> /, *u &c. appeared to converge. “ Obferving (fays our author) that the point of-phe pheno- convergence was oppofite to the fun, I began to fufpeftmenon tx- t-hat this unufual phenomenon was but a cafe of thei'l/dned by ufual apparent divergence of the beams of the fun fromlum* his apparent place among the clouds, as reprefented in fig. ii. I fay an apparent divergence ; for though no¬ thing is more common than for rays to diverge from a luminous body, yet the divergence of thefe beams in fuch lanre angles is not real, but apparent. Becaufe it is impoffible for the direft rays of the fun to crofs one another at any point of the apparent concavity of the (ky, in a greater angle than about half a degree. For U u the 33 8 OPT Plate CCCLX1. fig-13- Irradiationsthe diameter of the earth being fo extremely fmall, in Li'ht S&cScomPar^on to t^ie c^1^:ance °P Pun» l!S to Pub tend an k, 'i angle at any point of his body of but 2c or 22 feconds at moft ; and the diameter of our vilible horizon being extremely fmaller than that of the earth ; it is plain, that all the rays which fall upon the horizon from any given point of the fun, muft be inclined to each other in the fmalleft angles imaginable : the greateit of them being as much fmaller than that angle of 22 feconds, as the diameter of the vifible horizon is fmaller than that of the eaith. All the rays that come to us from any given point of the fun may therefore be confider- ed as parallel to each other; as the rays from the point e, or/B/j from the oppofite point/; and con- fequently the rays of thefe two pencils that come from oppofite points of the fun’s reil diameter, and crofs each other in the fun’s apparent place B among the clouds, can conftitute no greater an angle with each other than about half a degree ; this angle of their interfec- tion eB/being the fame as the fun would appear un¬ der to an eye placed among the clouds at B, or (which is much the fame) to an eye at O upon the ground Becaufe the fun's real dillance OS is inconceivably greater than his apparent diftance OB. Therefore the rays of the fun, as B^, B£, do really diverge from his apparent place B in no greater angles ^B^ than about half a degree. Neverthelefs they appear to diverge ^g- ii- from the place B in all pofiible angles, and even in op¬ pofite direttions. Let us proceed then to an explana¬ tion of this apparent divergence, which is not felf-evi- dent by any means ; though at firft fight we are apt to think it is, by not diftinguifhing the vaft difference • between the true and apparent diilances of the fun. “ What I am going to demonftrate is this. Sup- pofing all the rays of the fun to fall accurately paral¬ lel to each other upon the vifible horizon, as they do very nearly, yet in both cafes they muft appear to di¬ verge in all pofiible angles. Let us imagine the hea¬ vens to be partly overcaft with a fpacious bed of bro- i’ig. 14. ken clouds, v, v, v, See. lying parallel to the phne of the vifible horizon, here reprefented by the line AOD ; and when the fun’s rays fall upon thefe clouds in the parallel lines s v, s v, See. let fome of them pafs through their intervals in the lines v/, vt, See. and fall upon the plane of the horizon at the pi :ces t, t, Sec. And finee the reft of the incident rays s v, s v, are fuppofed to be intercepted from the place of the fpe&ator at O by the cloud x, and hon the intervals between the tranfmitted rays v t, v tf Sec. by the clouds v, v, Sec. a fmall part of thefe latter rays v t, vt, when refiefted every way from fome certain kind of thin vapours float¬ ing in the air, may undoubtedly be fufficient to affe& the eye with an appearance of lights and ftiades, in the form of bright beams in the places vt, vt, Sec. and of dark ones in the intervals between them ; juft as the like beams of light and fhade appear in a room by refledtions of the fun’s rays from a fmoky or dufty air within it ; the lights and fhades being here occa- fioned by the tranfnnfiion of the rays through fome parts of the window, and by their interruption at other parts. “ Now, if the apparent concavity of this bed of clouds v, v, to the eye at O, be reprefented by the arch A BCD, and be cut in the point B by the line OB* drawn parallel to the beams tv sit will be evident by ICS. part jj. the rules of perfpeaive, that thefe long beams will not Irradiation, appear in their real places, but upon the concave A B of the Sl,n’» CD diverging every way from the place B, where the !'igi;it’ Ac‘. fun himfelf appears, or the cloud a- that covers hia * body, as reprefented feparately in full view in fig. j “ And for the fame reafon, if the line BO be pro¬ duced towards E, below the plane of the horizon AOD and the eye be dire&ed towards the region of the fky direfUy above E, the lower ends of the fame real beams vt, vt, will now appear upon the part DF of this concave ; and will feem to converge towards the point E, fituated juft as much below the horizon as the op¬ pofite point B is above it: which is feparately repre¬ fented, in full view in fig. 12. “ For if the beams v t, vt, be fuppofed to be vifible throughout their whole lengths, and the eye be direc¬ ted in a plane perpendicular to them, here reprefented by the line OF ; they and their intervals will appear broadeft in and about this plane, becaufe thefe parts of them are the neareft to the eye ; and therefore their remoter parts and intervals will appear gradually nar¬ rower towards the oppofite ends of the line BE. As a faither illuftration of this matter, we may conceive the fpe&ator at O to be fituated upon the top of fa large a defeent OHI towards a remote valley IK, and the fun to be fo very low, that the point E, oppofite to him, may be feen above the horizon of this ihady valley. In this cafe it is manifeft, that the fpeftators at O would now fee thefe beams converging fo far as to meet each other at the point E in the Iky itfelf. , ^ “ I do not remember to have ever feen any pheno--’obfer- menon of this kind by moon-light; not fo much as ofveJ by beams diverging from her apparent place. Probably™0,0"' her light is too weak after refleffions from any kind ‘S ^ of vapours, to caufe a fenfible appearance of lights and Ihades fo as to form thefe beams. And in the unufual phenomenon I well remember, that the converging fun-beams towards the point below the horizon were not quite fo bright and ftrong as thofe ufually are that diverge from him ; and that the iky beyond them ap¬ peared very black (feveral Ihowers having paffed that way), which certainly contributed to the evidence of this appearance. Hence it is probable that the thin- nefs and wtaknefs of the refledled rays from the va¬ pours oppofite to the fun, is the chief caufe that this appearance is fo very uncommon in comparifon to that other of diverging beams. For as the region of the Iky round about the fun is always brighter than the oppofite one, fo the light of the diverging beams ought alfo to be brighter than that of the converging ones. For, though rays are refledted from rough un- polifned bodies in all poflible directions, yet it is a ge¬ neral obfervation, that more of them are reflected for¬ wards obliquely, than are reflected more direCtly back¬ wards. Befides, in the prefent cafe, the incident rays upon the oppofite region to the fun, are more dimi- nifned by continual reflections from a longer traCt of the atmofphere, than the incident rays upon the region next the fun. 5^T “ The common phenomenon of diverging beams, I The pheno- think, is more frequent in fummer than in winter, and , ' alio when the fun is lower than when higher up; pro- i.e^ms'more P£i Plate ccrjjo: 'V v \ t S'/*/ } • ' a/-> ',Y.yur ; Part II. OPT Illumina¬ tion of the Shadow of the Earth, per; fcecBufe the air ia generally quieter in the morn¬ ings and evenings than about noon-day ; and laftly, becaufe many forts of vapours are exhaled in greater plenty in fummer than in winter, from many kinds of volatile vegetables; which vapours, when the air is cooled and condenfed in the mornings and evenings, may become denfe enough to refleft a fenfiblelight/' §>]. Of the Illumination of the Shadow of the Earth ly the refraBirm of the Atmofphere. The ancient philofophers, who knew nothing of the refractive power of the atmofphere, were very much perplexed to account for the body of the moon being vifible when totally eclipfed. At fuch times the gene¬ rally appears of a dull red colour, like tarnifhed cop- r *4* per, or of iron almoft red-hot. This, they thought, "^'noVisvi- wa8 t^e moon’s native light, by which fhe became vi- fible^hen fible when hid from the brighter light of the fun. totally Plutarch indeed, in his difeourfe upon the face of the cclipled. moon, attributes this appearance to the light of the fixed ftars reflected to us by the moon ; but this mull be by far too weak to produce that effeCt. The true caufe of it is the fcattered beams of the fun bent into the earth’s lhadow by refraftions through the atmo¬ fphere in the following manner. , “ Let the body of the fun, fays Dr Smith, be repre- CCCLXil. fented by the greater circle ab, and that of the earth by %. i. ’the lefler one cd; and let the lines ace and bde touch them both on their oppolite fidcs, and meet in e beyond the earth; then the angular fpace ced will reprefentthe conic figure of the earth’s fhadow, which would be to¬ tally deprived of the fun’s rays, were none of them bent into it by the refraCtive power of the atmofphere. Let this power juft vanilh at the circle h z, concentric to the earth, fo that the rays ah and biy which touch its oppofite Tides, may proceed unrefraCted, and meet each other at k. Then the two neareft rays to thefe that flow within them, from the fame points a and 3, being refraCted inwards through the margin of the at^ ICS. 539 mofphere, will crofs each other at a poiut T, fon'iewhat?hum:^-^ nearer to the earth than k ; and in like manner, two cj^iow 0f oppofite rays next within the two laft will crofs eachthe Earth, other at a point w, feme what nearer to the earth than i——\ ^ /, having fuffered greater refraftions, by pafling through longer and denfer trafts of air lying fomewhat nearer to the earth. The like approach of the fucceflive in- terfeftions <£, /, zzz, is to be underftood of innumerable couples of rays, till you come to the interfeCTion n of the two innermoft; which we may fuppofe juft to totich the earth at the points o and p. It is plain then, that the fpace bounded by thefe rays on, vp, will be the only part of the earth’s fhadow wholly ^deprived of the fun’s rays. Let fmg reprefent part of the moon’s orbit when it is neareft to the earth, at a time when the earth’s dark fhadow onp is the longeft : in this cafe I will fhow that the ratio of tm to tn is about 4 to 3 ; and confequently that the moon, though centrally eclip¬ fed at m, may yet be vifible by means of thofe fcatter¬ ed lays above-mentioned, firft tranfmitted to the moon by refraftion through the atmofphere, and from thence refledted to the earth. “ For let the incident and emergent parts a q, rn, rig* of the ray a q o rn, that juft touches the earth at 0, be produced till they meet at zz, and let a q u produced meet the axis st produced in x ; and joining us and u nty fince the refractions of an horizontal ray palling from 0 to r, or from 0 to y, would be alike and equal, the external angle nu x h double the quantity of the ufual refraCtion of an horizontal ray ; and the angle zz zz j is the apparent meafure of the fun’s femidiameter feen from the earth ; and the angle usth that of the earth’s femidiameter t u feen from the fun (called his horizontal parallax) ; and laftly, the angle u mt h that of the earth’s femidiameter feen from the moon (call¬ ed her horizontal parallax); becaufe the elevation the point zz above the eatth is too fmall to make a fenfible error in the quantity of thefe angles ; whofe meafures by aftronomical tables are as follow : z '/ * Eud.l. prop. 32. f Ibid. The fun’s leaft apparent femidiametcr : The fun’s horizontal parallax - Their difference * is Double the horizontal rtfraCtion Their fum f is The moon’s greateft horizontal parallax Therefore (by a preceding prop.) we have tm : tn : (ang. t nu : ang. tmu :: 83'—10" : 62' —10" ::) 4 : 3,111 round numbers ; which was to he proved. It is eafy to colled from the moon’s greateft horizontal pa¬ rallax of 62'—1 o ', that her leaft diftance f »? is about i;5y femidiameters of the earth; and therefore the greateft length t n of the dark fhadow, being three quar¬ ters of t m, is about 414 femidiameters. “ The difference of the laft mentioned angles */zrz, tmuy is mun — z\', that is, about two thirds of 31'— 40", the angle which the whole diameter of the fun fubtends at zz. Whence it follows, that the middle point m of the moon centrally eclipfed, is illuminated by rays which come from two thirds of every diame¬ ter of the fun’s difk, and pafs by one fide of the earth ; and alfo by rays that come from the oppeiite ang. a u s ~ 15—50 = ang. ust = 00—10 — ang. txu—i 5—40 — ang. nu x = 67—30 — ang. tnu = 83—10 == ang. t mu ~ 62—10 two thirds of every one of the faid diameters, and pafs by the other fide of the earth. This will appear by conceiving the ray a q 0 r n to be inflexible, and its middle point 0 to Aide upon the earth, while the part r n is approaching to touch the point m ; for then the oppofite part qa will trace over two thirds of the fun’s diameter. The tme proportion of the angles n um, a u s, could not be preferved in the fcheme, by reafon of the fun’s immenfe diftance and magnitude with refpeCt to the earth. “ Having drawn the line at«, it is obfervable, that Fig 3, all the incident rays, as aq, «x, flowing from any one point of the fun to the circumference of the earth, will be colleded to a focus «, whofe diftance / “is lefs than tm in the ratio of 62 to 67 nearly 5 and thus an image of the fun will be formed at «/?, whofe rays U u 2 will US 'Why the moon ap- 34© * OPT Meafure* will'diverge irpdn the moon. For the angle t«u is the of Light. ^jfference 0f tjie angles x u a, u xt found above; and / «: tm : : ang. tmu «: ang. t*u : : 62'—10" : 67—30''. “ The rays that flow next above a q and ax, by palling through a thinner part of the atmofphere, will be united at a point in the axis atu fomewhat far¬ ther from the earth than the lad focus « ; and the fame may be faid of the rays that pafs next above thefe, and fo on ; whereby an infinite feries of images of the fun will be formed, whofe diameters and de¬ grees of brightnefs will increafe with their diftances from the earth. “ Hence it Is manifeft why the moon eclipfed in her perigee is obferved to appear always duller and dark- pears duller er t^an jn ap0nree. The realon why her colour fed in her is always of the copper kind between a dull red and perigee orange, 1 take to be this. The blue colour of a clear than in her fky (hows manifellly that the blue-making rays are apogee. more copioufly refle&ed from pure air than thofe of any other colour; confequently they are lefs copioufly tranfraitted through it among the reft that come from the fun, and fo much the lefs as the tradi of air through which they pafs is the longer. Hence the common colour of the fun and moon is whitert in the meridian, and grows gradually more inclined to di¬ luted yellow, orange, and red, as-they defcend lower, that is, as the rays are tranfmitted through a longer traft of air ; which tradh being ftill lengthened in pafi. ling to the moon and back again, caufes a ftill great¬ er lofs of the blue-making rays in proportion to the reft; and fo the refulting colour of the tranfrnitted rays muft lie between a dark orange and red, accord¬ ing to Sir Ifaac Newton’s rule for finding the refult of a mixture of colours. We have an inftance of the reverfe of this cafe in leaf-gold, which appears yeh low by refledted and blue by tranfmitted rays. The circular edge of the lhadovv in a partial eclipfe ap¬ pears red ; hecaufe the red-making rays are the leaft refradted of all others, and confeqyently ace left alone in the conical furface of the fiiadow, all the reft be¬ ing refradted into it. $ 8. Of the. Meafures of Light* That fome luminous bodies give a ftronger, and others a weaker light, and that fome refledl more light than others, was always obvious to mankind ; 3VT."b?u- but no perfon, before M. Bouguer, hit upon a toler- puer’s con- able method of afeertaining the proportion that two trivance* or n-ore lights bear to one another. The methods he ™e^ur'moft commonly ufed were the following, opiate He took two pieces of wood orpafteboard EC and CCCLXII. CD (fig. 4.), in which he made two equal holes P and over which he drew pieces of oiled or white paper. Upon thefe holes he contrived that the light of the different bodies he was comparing fhould fall ; while he placed a third piece of pafteboard FC, fo as to prevent the two lights from mixing with one ano¬ ther. Then placing |himfelf fometimes on one fide, and fometimes on the other, but generally on the op- pefite fide of this inftrument, with refpedl to the light, he altered their pofition till the papers in the two holes appeared to be equally enlightened. This being done, he computed the proportion of their light by the fquares of the diftances at which the luminous bodies were placed from the obje&s. If, for inftance, the 6 I CS. Part IK diftances were as three and nine, he concluded that Meafure* the light they gave were as nine and eighty-one. of Where any light was veiy faint, he fometimes made' life of lenfes, in order to condenfe it; and he inclofed them in tubes or not as his particular application of them required. To meafure the intenfity of light proceeding from* the heavenly bodies, or reflefted from any part of the fky, he contrived an inftrument which rcfembles a- kind of portable camera obfeura. He had two tubes, of which the inner was black, faftened at their lower extremities by a hinge C, (fig. 5.) At the bottom of thefe tubes were two holes, R and S* three or four lines in diameter, covered with two pieces of fine white paper. The two other extremities had each of them- a circular aperture, an inch in diameter; and one of the tubes confifted of two,, one of them Aiding into the other, which produced the fame effeft as varying the aperture at the end. When this inftrument is ufed, the obferver has his head, and the end of the in¬ ftrument C, io covered, th i no light can fall upon his eye, befides that which comes through the two holes S and R, while an affiftant manages the inftrument, and draws out or ihortens the tube DE, as the obferver di- refts. When the two holes appear equally illumina¬ ted, the intenfity of the lights is judged to be inverfe- ly as the fquares of the tubes. In uling this inftrument, it is neceffary that the ob- je£t Ihould fubtend an angle larger than the aperture A or D, feen from the other end of the tube ; for, otherwife, the lengthening of the tube has no effedl. To avoid, in this cafe, making the inftrument of au inconvenient length, or making the aperture D too narrow, he has recourfe to another expedient. Fie conftrmfts an inftrument, reprefented (fig. 6.), confilt-f ing of two objeft-glaffes, AE and DF, exa&ly equal, fixed in the ends of two tubes fix or feven feet, or, io fome cafes, 10 or 12 feet long, and having their foci at the other ends. At the bottom of thefe tubes B, are two holes, three or four lines in diameter, covered with a piece of white paper ; and this inftrument is ufed exaftly like the former. If the two objedls to be obferved by this Jnftrument be not equally luminous, the light that iffuesfrom them muft be reduced to an equality, by diminilhing the aperture of one of the objcd-glaffes ; and then the re¬ maining furface of the two glaffes will give the propor¬ tion of their lights. But for this purpofe, the central parts of the glafs muft be covered in the fame propor- teenwith the parts near the circumference, leaving the aperture fuch as is reprefented (fig. 7.), becaufe the middle part of the glafs is thicker and lefs tranfparent than the reft. If all the obje&s to be obferved lie nearly in the fame dire&ion, our author obferves, that thefe two long tubes may be reduced into, one, the two obje&T glalfes being placed clofe together, and one eye glafs fufficing for them both.. The inflrument will then be . the fame with that of which he .publiihed an account in 1748, and which he called a heliatruter, or ajlrometer. Our author obferves, that it is not the abfolute Thefe'in- quantity, but only the intenfity of the light, that isfltuments meafured by thefe two inftruments, or the number of rays, in proportion to the furface of the luminous bo tenfity ci dy j and it is of great importance that thefe two things light. be Part IL O c s. 3^ Meafures be dillinguifFicd. The intenfity of light may be very of Li^ht. greatj when the quantity, and its power of iliumina- l(' ' J ling other bodies, may be very fmall, on account of the fmallnefs of its furface ; or the contrary may be the cafe, when the furface is large. Having explained thefe methods which M. Bouguer took to meafure the difierent proportions of light, we fhall fubjoin in this place a few mifcellaneous examples of his application ot them. It is obfervable, that when a perfon {lands in a place where there is a ftrong light, he cannot diftinguifh: objcdls that are placed in the (hade ; nor can he fee any thing upon going immediately into a place where there is very little light. It is plain, therefore, that the adlion of a ftrong light upon the eye, and alfo the imprefiion which it leaves upon it, makes it infenfrble to the effedl of a weaker light. M. Bouguer had the curiofity to endeavour to afcertain the propoitioir be¬ tween the intenfities of the two lights in this cafe y and by throwing the light of two equal candles upon a board, he found that the fhadow made by intercept¬ ing the light of one of them, could not be perceived by his eye, upon the place enlightened by the other, at little more than eight times the diftance ; from whence he concluded, that when one light is eight times eight, or 64 times lefs than another, its pre- fence or abfence will not be perceived. He allows, however, that the effedl may be different on different eyes; and fuppofes that the boundaries in this cafe, with refpeft to different perfons, may lie between 60 and 80. Applying the two tubes of his inftrument, men¬ tioned above, to meafure the intenfity of the light re- flefted from different parts of the fky ; he found, that when the fun was 25 degrees high, the light was four times ftronger at the diftance of eight or nine degrees from his body, than it was at 31 or 32 degrees. But what ftruck him the moft was to find, that when the 146 Orcar vz- riatam of fun is 15 or 20 degrees high, the light decreafes on the fame parallel to the horizon to 110 or 120 de¬ grees, and then increafes again to the place exactly oppolite to the fun. The light of the fun, our author obferves, is too ftrong, and that of the ftars toa weak, to determine the variation of their light at different altitudes: but as, in both cafes, it mu ft be in the fame proportion w;.th the diminution of the light of rhe moon in the fame circumftances, he made his obfervations on that luminary, and found, that its light nt 190 16', is to its light at 66» 11', as 1681 to 2500; that is, the one is nearly two thirds of the other. He chofe thofe particular altitudes, becaufe they are thofe of the fun the moon^ at t^e two ^^ces at Croific, where he then refided. at different When one limb of the moon touched the horizon of altitudes, the fen, its light was 2000 times lefs than at the alti¬ tude of 66c i-i'. But this proportion he acknowledges muft be fubjefl to many variations, the atmofphere near the earth varying fd much in its denfity. From this obfervation he concludes, that at a medium light is diminifhed in the proportion of about 2500 to i68t, 7 ^ in trayeriing 7469 toifes of denfe air. Variation Laflly, our accurate philofopher applied his inftru- in different, ment to the different parts of the fun’s diftc, and found P-^that the centre is confidtrably more luminous than the fun and'1C extremities of it. As near as he could make the ob- plauets. fervation, it was more luminous than apart of the ch'fk.Meaftires ■|ths of the femidiameter from it, in* the proportion , of | of 3? to 28 ; which, as he obferves, is more than in v the proportion of the fines of the angles of obliquity. On the other hand, he obferves, that both the primary and fecondary planets are more luminous at their edges than near their centres. The comparifon of the light of the fun and moon is a fubjeft that has frequently exercifed the thoughts of philofophers ; but we find nothing but random conjec¬ tures, before our author applied his accurate meafures in this cafe. In general,, the light of the moon is imagined to bear a much greater proportion to that of the fun than it really does ; and not only are the ima¬ ginations of the vulgar, but thofe of philofophers al¬ fo, impofed upon with refpeft to it. It was a great furprife to M. de la Hire to find that he could noV by the help of any burning mirror, colled the beams of the moon in a fufficient quantity to produce the leaft fenfible heat. Other philofophers have fince made the like attempts with mirrors of greater power, though without any greater fuccefs ; but this will not furprife us, when we fee the refult of M. Bouguer’s obfervations on this fubjtd. a48 In order to folve this curious problem concerning. M. Hou- the comparifon of the light of the fun and moon, he user’s cal- compared each, of them to. that of a candle in a dark room, on&in the day-time, and the other in the night the of following, when the. moon was at her mean diftance the moon, from, the earth; and, after many trials, he concluded that the light of the fun is about 300,000 times greater than that of the moon ; which is fuch a difproportion, that,, as he obferves, it can be no wonder that phil fophers have had fo little fuccefs in their attempts to colled the light of the moon with burning-glaffes. For the largefl of them will not increafe the light 1000 times ; which will ftill leave the light of the moon, in the focus of the--mirror,. 300 times-lefs than the interr- fity of the common light of the fun. To this account of the proportion of light which we adually receive from the moon, it cannot be dif- pleaiVng to the reader, if we compate it with the quan¬ tity which would have been tranfmitted to us from that opaque body, if it refieded all the light it re¬ ceives. Dr Smith thought that he had proved, from two different confiderations, that the light of the full moan would be to our day-light as I to about 90,900, if no rays were loft at the moon. ^ In the firft place, he fuppofes that the moon, en- SmithV lightened by the fun, is as luminous as the clouds are calculation, at a medium. He therefore fuppofed the light of the fun to be equal to that of a whole hemifphere of clouds, or as many moons as would cover the furface of the heavens. Biit on this Dr Prieftley obferves, that it is true, the light of the fun fhining perpendi¬ cularly upon any furface would be equal to the light refieded from the whole hemifphere, if every part re¬ fieded all the light that fell upon it ; bust the light that would in fad be received from the whole herai- fphere (part of it being received obliquely) would be- only one-hhlf as much as would be received from the whole hemifphere, if every part of it fhone diredly upon the furface to be illuminated. In his Remarks, pas-. 97, Dr Smith demonftrates his. method of calculation in the following manner.^ “ Let 342 OPT Mcafurc* '< Let tftc Ktllc* circle cfU‘ finitely {lender pencil, or, more accurately fpeaking,y is the remoteft limit from P of the concourfe of rays with PF’ refraded by points lying without the arch VP, or the neareft limit for rays incident between V and P. Draw the radius Cpe>, the line pf; and draw pg parallel to P_/( andPo perpendicular to Py. It is evident, that if ybe the focus, c’pf is the angle of refradion correfponding to the angle of incidence apC, as C’Pf is the angle correfponding to APC. Alfo PC/ is the increment of the angle of incidence, and the angle cypg is equal to the fum of the angle C’P/* and C’C r, and the angle %p f is etpial to the angle pfV. Therefore c} p fz. C’P/d-P, C/>,+P/>. There¬ fore PC/+Pfp is the correfponding increment of the angle of refradion. Alfo, becaufe RPc-CP/ (being right angles) the angle pi* o =:RPC, and Po:P6=; PR : PC. I herefore, by a preceding Lemma in this article, Page zBe. we have PC/-}-Pfp : PCp ~ tan. ref. : tan. incid. ~ &c. T, R : T, I; and P// ; PCp = T, R - T, I : T, I, Pf* ; T* [ ’ but p^» —PR : Pyj nr DR : D3 (becaufe DP is paral¬ lel to By by conflrudion) rr tan. CPR — tan. CPI r tan. CPI Now CPI is the angle of incidence ; and there!ore CPR is the angle properly correfponding to it ns an angle of refradion, and uhe point f is properly determined. Hence the following rule . As the difterence of the tangents of incidence and refradion is to the tangent of incidence, fo is the radius of the furface multiplied by the cofine of refradion to the diffance of the focus of an infinitely Aen !er pencil of parallel incident rays. N. B. We here confider tht cofine of refiadion as a number. This was firfl done by the celebrated Leo¬ nhard Euler, and is one of the greateil improvements in mathematics which this century can boafl of. The fines, tangents, fecants, &c. are confidered as-fradionai numbers, of which the radius is unity. Thus, CP X i CP fin. 30°, is the fame thing with -CP, or —.. And in like manner, CB, drawn perpendicular to the r.x!s X fin. 190 28' 16,"32"', is the fame thing with — of CB, C B 0 3 ■A-lfo—___ is the fame .thing with twice CB, &c. Col. 60° 'J ’ T ■344 ' OPT Of Abcrra- In this manner, BE=.BCX fin. BCE, and alfo BE .tion. — CEx ta*. BCE, and CB = CExfec. BCE, &c. &c. v’ This manner of confidering the lines which occur in geometrical conftru&ions is of immenfe ufe in all parts of mixed mathematics; and no where more remarkably than in optics, the moft beautiful example of them. Of this an important inftance (hall now be given. Corol. i. The diftanceyG of this lateral focus from the axis CV (that is, from the line drawn through the centre parallel to the incident light) is proportional to the cube of the femi-aperture PH of the fpheiical fur- face. For/G=:BE. Now BE=CBx fin. BCE, =CB X fin. CPA } and CBzrRCX cof. RCB, =RCX fin. CPR, and RC“CPX fin. CPR : Therefore BErrPC X fin.z CPRX fin. PC A, =aPCX fin.1 refr. X fin. incid. rn* but fin.1 refr. = pr fin.1 incid. Therefore, finally, BE, or/GarPCX^-X fin.3 incid1: But PC. fin. incid. J n'- is evidently PH the femi-aperture ; .therefore the pro- pufition is manifeft. Corol. 2. Now let this (lender pencil of rays be in¬ cident at the vertex V. The focus will now be a point F in the axis, determined by making CV : CF = wz — n : m. Let the incident pencil gradually recede from the axis CF, dill, however, keeping parallel to it. The focus / will always be found in a curve line DC’F, fo conftituted that the ordinate G will be as the cube of the line PH, perpendicular to the axis intercepted between the axis and that point of the furface which is cut by a tangent to the curve in /. All the rcfra&ed rays will he tangents to this curve, and the adjacent rays will crofs each other in thefe la¬ teral foci f; and will therefore be incomparably more denfe along the curve than any where within its area. This is finely illuflrated by receiving on white paper the light of the fun refradfed through a globe or cy¬ linder of glafs filled with water. If the paper is held parallel to the axis of the cylinder, and clofe to it, the illuminated part will be bounded by two very bright parallel lines, where it is cut by the curve ; and thefe lines will gradually approach each other as the paper is withdrawn from the veffel, till they coalefce into one very bright line at F, or near it. If the paper be held with its end touching the vefiel, and its plane nearly perpendicular to the axis, the whole progrefs at the curve will be diftindlly feen. As fuch globes were ufed for burning-glafies, the point of greateft condenfation (which is very near but not exadfly in F) was called the focus. When thefe curves were obferved by Mr Tchirnhaufs, he called them cm flics ; and tbofe formed by tefradlion he call¬ ed diacaiflicsy to diftinguifh them from the catacaujlics formed by rcfleftien. It is fomewhat furprifing, that thefe curves have been fo little ftudied fince the time of Tchirnhaufs. The dodtrine of aberrations has indeed been confidered in a manner independent on their properties. But whoever confidersthe progrefs of rays in the eye-piece of optical inftruments, will fee that the knowledge of the properties of diacauftic curves determines direftly, and almoft accurately, the foci and images that are formed there. For, let the objeft-glafs of a telefcope or microfe-ope be of any dhnenfxons, the pencils inci- Ny 2490 I C sc Part II. dent on the eye-glafies are almoft. all-of this evanefcentOf Abeu a- bulk. Thefe advantages will be (hown in their proper fi00, , places : and we proceed at p re fen t to extend our know- v ledge of aberrations in general, firft confidering the aberrations of parallel incident rays. Abiding by the inftance reprelented by the figure, ., it is evident that the cauftic will touch the furface in a point P, fo fituated that c ?: PX m m. The refract¬ ed ray v* will touch the furface, and will crofs the a’xis in ‘J’, the neareft limit of diffulton along the axis. If the furface is of fmaller extent, as PV, the cauftic begins at/, when the extreme refraftedray P/touches the cauftic, and crofles the axis in F’, and the oppo- flte branch of the cauftic in K. If there be drawn an ordinate KO k to the cauftic, it is evident that the whole light incident on the furface PV n paffes through the circle whofe diameter is K k, and that the circle is the fmalleft fpace which receives all the refrafted %ht\ . . *53 It is of great importance to confider the manner in How light which the light is diftributed over the furface of this is diftribu-j circle of fmalleft diffufion ; for this is the rePrelienta*the ’ tion of one point of the infinitely diftant radiant ob-e^ circie 0£ je, touching the arch Cl of the cauftic in t. The third is ht *, touching-the arch c d of the oppofite branch of the cauilic in It will greatly aflift our conceptions of this fubjed, if we conlider a ray of light from the refrading fur face as a thread attached at I of this figure, or at F €eCXLllIef % and gradually unlapped from the cauftic DVCI on.one tide, and then lapped on the oppofite branch Icvd; and attend to the point of its inter- fedion with the diameter r OC of the circle of fmail- eft difTufion. Therefore, I. let the rsy.be firft fuppofed to pafs through the refrading furface at F, the right hand extremity of the aperture. The thread is then folded up on the whole right hand branch ICVD'of the cauftic ; and if the ftraight part of it FD be produced, it will cut the diameter of the circle of fmaUcft diffu- fion in the oppofite extremity c. Or fuppofe a ruler in place of the thread, applied to the cauftic at D and to the refrading furface at F, the part of it Dr, which is detached from the cauftic, cuts COr in the point r; 2. Now fuppofe the ruler to revolve gra¬ dually, its extremity moving acrofs the arch FA/of the refrading furface while the edge is applied to the cauftic ; the point of contad with the cauftic will ftrift gradually down the branch DV of the cauftic while its edge paftes acrofs the line r C ; and when the’ point of contad arrives at V, the extremity will be at Y on the refrading furface, and the interfedion of the edge will be at O. 3. Continuing the motion, the point of contad fhifts from V to Z, the extremity from Y to Q_’, and the interfedion from O to O, fo , ^ OC1 . * CQI— % ’ as prefently appear. 4. After this, the point of contad will ftrift from Z to C the extnmify from to X, halfway from F to A, as will foen be fhown, and the interfedion from Qto C. 5. '1 he point of contaft will now ftiift from C down to I, the extremity will pafs from X to A, and the mterfedion will go back from C to O. 6. The Vol. XIII. Parti. ^ ICS. 345 ruler muft now be applied to the other branch of the Of Aberra- cauftic l czv d, and the point" of contad will afeend, from I to c, the extremity will pafs from A to*:, half v 11 * way to f from A, and the interfedion from O to c. 7. The point of contad will afeend from C to z, the extremity paftes from x to q\ and the interfedion from Or* C to q, Oql being 8. While the contad of the ruler and cauftic ftufts from z to v, the extremity (hifts from q’ toy, and the interfedion from q to O. 9. The contad rifes from v to d, the extremity pafles fromy to /, and the interfedion from O to C; and then the motion acrofs the refrading furface is com¬ pleted, the point of contad fliifting down from D to I, along the branch DVZCI, and then afeending along the other branch lczn. 255 Contrary OPT ANXAL may be taken as equal to AO* without u any fenfible error. It never differs from it in tele- fcopes loeth part, and is generally incomparably fmallcr. Therefore the denfity at H may be confi- dered as proportional to ONXOL invetfely. And it Ivill afterwards appear that NS is = 3oL. There¬ fore the denfity at H is inverfely as ONxNS. Now delcribe a circle on the diameter OS, and draw NT? cutting the circumference N pj~ONxNS, and the denfity at H is as N ?1 inverfely. This gives us a very eafy eftimation of the denfity, 'viz. draw a line from the point of contaftof the ray which touches the part VC of the cauftic, and the denfity is in the inverfe fubduplicate ratio of the part of this line intercepted between the axis and the circumfe¬ rence S?0. It will afterwards appear that the den¬ fity covrefponcling to this ray is one half of the den¬ fity correfponding to all the three : or a better ex- preffion will be had for the denfity at H by drawing R/3 perpendicular to R?, and go perpendicular to

or is propor¬ tional to the denfity, as is evident. When H is at O, N is at S, and ^o is infinite. As H moves from O, N defeends, and ? o diminiihes, till II cornes to Q> and T to z, and p to and o to R. When H moves from (^towards C, T defeends be¬ low z, f o again increafes, till it is again infinite, when H is at C, T at C, and N at O. Thus it appears, without any minute confideration, that the light has a denfity indefinitely great in the centre O ; that the denfity decreafes to a minimum in fome intermediate point and then increafes again to infinity at the margin C. Hence it follows, that the indiftindtnefs arifing from the fpherical figure of the refrafting furfaces is incomparably greater than Newton fuppefed ; and that the valuable difeovery of Mr Dollond of achromatic lenfes, muff have failed of anfwering his fond expedbations, if his very method of producing them had not, at the fame time, enabled him to remove that other indiftinftnefs by employing contraiy aberrations. And now', fince the difeoveries by Dr Blair of fubftances which difperfe the different colours in the fame proportions, but very different de¬ grees, has enabled us to employ much larger portions of the fphere than Mr Dollond could introduce into his objedb-glaffes, it becomes abfolutely neceffary to iludy this matter completely, in order to difeover and afeertain the amount of the errors which perhaps un¬ avoidably remain. This flight flcetch of the moft Ample cafe of aber- aberrations ration, namely, when the incident rays are parallel, cor red w;u ferve to give a general notion of the fubjedt; and cac ot‘ier' the reader can now fee how contrary aberrations may be employed in order to form an ultimate image which fhali be as dillinft as poffible. For let it be propofed Plate *° converge parallel rays accurately to the focus F eCCLXIII (fig- 3-) by the refraction of fpherical furfaces of which V is the vertex. Let PV be a convex lens of fuch a form that rays flowing from F and palling through it immediately round the vertex V are colledted to the conjugate focus R, while the extreme ray FP, inci¬ dent ©n the margin of the lens P, is converged to r, nearer to V, having the longitudinal aberration Rr. Let p\r be a plano-concave lens, of fuch fphericity ICS. PAI-t II.. that a ray A/>, parallel to the axis OV, and incident Of he on the point /, as far from its vertex V as P in the Multiply- other lens is from its vertex, is clifperfed from r, the , ‘“S' g!ajs’t diftance pV being equal to T V, while the centralrays are difperfed from P, as far from V as R is from V. It is evident, that if thefe lenfes be joined as in fig. 4. a ray A’yd, parallel to the common axis CV, will be collefted at the diflance VF equal to VF in the fig. 4. and that rays palling through both lenfes in the neigh- bouihood of the axis will be colled!ed at the fame point F. This compound lens is faid to be withoHt fpheri¬ cal aberration ; and it is true that the central and the extreme rays are colledted in the fame point F : but the rays which fall on the lens between the centre anti margin are a little diffufed from F, and it is not pof¬ fible to colledl them all to one point. For in the rules for computing the aberration, quantities are negledied which do not preferve (in different apertures)the fame ratio to the quantities retained. The diffulion is leaft when the aberration is corredled, not for the very ex¬ tremity, but for a certain intermediate point (varying with the aperture, and having no known ratio to it); and when this is done the compound lens is in its (late of greateft perfedlion, and the remaining aberration is quite infenfible. This fubjedl will be refumed under the article Te¬ lescope, and profecuted as far as the conitrudlion of optical inltruments requires. Sect. IV. Of Optical Injlruvicnts. Of the mechanifm of optical inftruments particular' accounts are given in this work under their refpedtive denominations. Thefe it would be improper to re¬ peat : but as it belongs to the fcience of optics to ex¬ plain, by the laws of refradlion and refleftion, the fe- veral phenomena which thofe inftruments exhibit, we muft in this place enumerate the inftruments them- felves, omitting entirely, or ftating very briefly, fuch fafts as are ftated at large in other places. In this enumeration we fliall begin with the multiplying-glafs% not becaufe it is firft in importance, but that it may not intervene between inftruments more ufeful, and which have a mutual relation to one another. $ I. The Multiplying-glafs. . The multiplying-glafs is made by grinding down the round fide hik (fig- 1.) of a plano-convex glafs AB, into feveral flat fuifaces, as hb, bid, dk. An object C will not appear magnified when feen through this glafs by the eye at H; but it wjll appear multiplied na of the ~ into as many different objects as the glafs contains niultiply- plane furfaces. For, fince rays will flow from theing'£laU’ obje£t C to all parts of the glafs, and each plane fur- face will refraft thefe rays to the eye, the fame objeft will appear to the eye in the direftien of the rays which ,enter it through each furface. Thus, a ray gi H, falling perpendicularly on the middle furface, will go through the glafs to the eye without fuffering any refraftion; and v/ill therefore Ihow the object in its true place at C: whilft a ray ab flowing from the fame obj-eft, and falling obliquely on the plane furface b b, will be refracted in the direction b e, by palling through the glafs ; and, upon leaving, it, will go on to the eye in the direction e H ; which will g caufs Vin\v C'< VLXm.. O PT LO 3 . Part If. OPT plane caufe the fame object C to appear alfo at E, m the . M>rrurs- i direction of the lay He, produced in the right line H e n. And the ray c d, flowing from the objedt C, and falling obliquely on the plane furface dk, will be refradted (by palflng through the glafo, and leaving jt at fj to the eye at H ; which will caufe the fame objedl to appear at D, in the diredtion -If the glafs be turned round the line^/H, as an axis, the objedt C will keep its place, becaufe the furface bid is not removed ; but all the other ohjedts will feem to go round C, becaufe the oblique planes, on which the rays abed fall, will go round by the turning of the glafs. . § 2. Mirrors. It has been tlfewhere obferved, that of mirrors there are three principally ufed in optical experiments (See Catoptrics, Sedl. I.); the plane mirror, the fphm'cal convex mirror, and the fpherical concave mirror. Of thefe the plane mirror firft claims our attention, as it is more common, and undoubtedly more ancient, than the other two. It has been faid (ubi fupra), that the image remedied by this mirror appears as far behind the furface as the objedt is be¬ fore it; that the image will appear of the fame fize, and in the fame polition with the objedt ; that every fuch mirror will refledt an image of twice its own length and breadth; and that in certain circumftances it will refledt feveral images of the fame objedt. For thefe phenomena it is our buflnefs in this place to ac¬ count by the laws of refledtion. rrru ytv '^et 2') ke an °kje^ Placed before the re- CCCLX V fle(cyng furface gbt of the plane mirror CD ; and let the eye be at o. Let hh be a ray of light flowing from the top A of the objedt, and falling upon the mirror at b, and h m be a perpendicular to the furface of the minor at h; the ray l\h will be reflected from the minpr to the eye at o, making an angle mho equal to the angle Ah m: then w ill the top of the image E appear to the eye in the diredtion of the refledted ray o h produced to E, where the right line Ay>E, from the top of the object, cuts the light line o h E, at E. Let 13 i he a ray of light proceeding from the foot of the objedt at B to the mirror at i; and n i u perpendicular to the mirror from the point i, where the ray B i falls upon it : this ray will be refledted in the line i o, ma¬ king an angle n t o equal the angle B /’«, with that per¬ pendicular, and entering the eye at o; then will the foot ¥ of the image appear in the diredtion of the re¬ flected iay oi, produced to F, where the right line BF cats the refledted ray produced to F. All the other rays that flow from the intermediate points of the objedi AB, and fall upon the mirror between b and t, will be refledted to the eye at o ; and all the inter¬ mediate points of the image EF will appear to the eye in the diredtion of thefe refledted rays produced. But all the rays that flow from the object, and fall upon the mirror above h, will be reflected back above the eye at o ; and all the rays that flow from the ob¬ jedt, and fall upon the mirror below z, will he refledted back below the eye at o; fo that none of the rays that fall above A, or below /, can be refledted to the eve at c; and the diltance between A and ris equal to half 'he length of the objedt AB. Hence it .appears, that -if a man fees his whole I ; C ■ S. > 347 image in a plane boking-glafs, the psrt of the ghfs Plane that reflects his image mutt be juft half as long and M:rrorS' half as broad as himfelf, let him ftand at any diftance from it whatever ; and that his image mutt appear juft size of a as far behind the glafs as he is before it. Thus, the man looking- AB (fig. 3.) viewing himfelf in the plane mirror CD,£!a{s 'n which is juft half as long as himfelf, fees his whole image as at EF, behind the glais, exadtly equal to fee his ^ his own fize. For a ray &C proceeding from iiis eye whole at A, and falling perpendicularly upon the furface 0fim3&e* the glafs at C, is refledted back to bis eye, in the fame line CA ; and the eye of his image will appear at E, in the fame line produced to E, beyond the glafs. And a ray BD, flowing from his foot, and falling ob¬ liquely on the glafs at D, will ire reflected as obliquely on the other fide of the perpendicular a b D, in the diredtion DA; and the foot of his image will appear at F, in the diredtion of the refledted ray AD, pro¬ duced to F, where it is cut by the right line BGF, drawn parallel to the right line ACE. Juft the fame as if the glafs were taken away, and a real man ftood at F, equal in fize to the man Handing at B : for to his eye at A, the eye of the other man at E would be feen in the direction of the line ACE ; and the foot of the man at F -would be feen by the eye A, in the diredlion of the line ADF. II the glafs be brought nearer the man AB, as fup- pofe to cb, he will fee his image as at CDG : for the refledted ray C/b (being perpendicular to the glafs} will ftiow the eye of the image as at C ; and the inci¬ dent ray BA, being refiedted in-the line A A, will fliow the foot of his image as at G; the angle of re¬ flection ab i\ being always equal to the angle of inci- deijce ¥>b a: and fo of all the intermediate rays from A to B. Hence, if the man AB advances towards the glafs CD, his image will approach towards it ; and ir he recedes from the glafs, bis image will aifo recede from it. If the objedt be placed before a common looking- glals, and viewed obliquely, three, four, or more images of it, will appear behind the glafs. To explain this, let ABCU {fig. 11.) represent the glafs; and let EF be the axis of a pencil of rays flow- cCClIx, ing from E, a point in an object fituated there. The rays of this pencil will in part be refledted at F, fup- pofe into the line FG. What remains will (after re¬ traction at F, which we do not confider here) pafs on to H ; from whence (on account of the quickfilver which is fpread over the fecond furface of glafles of this kind to prevent any of the rays from being tranf- mitted there) they will be ftrongly reflected to K, where part ot them will emerge and enter an eve at L. By this means one reprefentation of the faid point Why thre* will be lormed in the line LIv produced, ftippofe in M; or four “ ~ Again, another pencil, whole axis is EN, firft reflec--’m3r,. tion at the feveral points R, S, H, T, V, fucceflively will exhibit a third reprefentation of the fame point at X; and k> on in infinitum. The fame being true of each point in die object, the whole will be reprefented in the like manner; but the reprefentations will be faint, in proportion to the number of reflections the lays fuller, and the length of their progrefs within the x 2 glafs. 348 OPT Concav glafs. We may add to thefe another reprefentation and Convex u£ the fajue ov je£t; in the line LO produced, made by « A'‘^rorv , fuch of the rays as fall upon O, and are from thence refledted to the eye at L. This experiment may be tried by placing a candle before the glafs as at E, and viewing it obliquely, as from L. 2. Of Concave and Convex Mirrors. . The effects of thefe in magnifying and diminifhing obie&s have been already in general explained ; but for the better un- derftanding the nature of rtfle&ing telefcopes, it will ilill be proper to fubjoin the following particular dc- fcription of the effedts of concave ones. Plate When parallel rays (fig. 4.), as df a, Cmb, elc, CCCiiXlV fall upon a concave mirror AB (which is not trsnfpa- rent, but has only the furface A5B of a clear polifh), they will be reflefted back from that mirror, and meet in a point m, at half the diftance of the furface of the mirror from C the centre of its concavity ; for they will be reflefted at as great an angle from a perpen¬ dicular to the furface of the mirror, as they fell upon it with regard to that perpendicular, but on the other fide thereof. Thus, let C be the centre ol concavity of the mirror A£B; and let the parallel rays dfat C rnJby and e/r, fall upon it at the points a, 3, and c. Draw the lines C za, Cmb, and Che, from the cen¬ tre C to thefe points; and all thefe lines will be per¬ pendicular to the furface of the mirror, becaufe they proceed thereto like fo many radii or fpokes from its centre. Make the_angle Cah equal to the angle da C, and draw the line am h, which will be the direc¬ tion of the ray df a, after it is re fie died from the point a of the mirror : fo that the angle of incidence daC is equal to the angle of refledlion Cah; the rays making equal angles with the perpendicular C i a on its oppofite fides. , Draw alfo the perpendicular C h c to the point c, where the ray f/r touches the mirror; and having made the angle C c i equal to the angle C c e, draw the line c m i, which will be the courfe of the ray e lc, af¬ ter it is reflefted from the mirror. The ray Cmb palling through the centre of con¬ cavity of the mirror, and falling upon it at b, is per¬ pendicular to it ; and is therefore reflected back from it in the fame line bmC. All thefe reflected rays meet in the point m; and in that point the image of the body which emits the pa¬ rallel rays da, C b, and ec, will be formed ; which point is diftant from the mirror equal to half the ra¬ dius 3 »z C of its concavity. The rays which proceed from any celeflial objeft may be efteemed parallel at the earth ; and therefore the image of that objedl will be formed at m, when the reflefting furface of the concave mirror is turn¬ ed direflly towards the objefit. Hence, the focus m of parallel rays is not in the centre of the mirror’s concavity, but half way between the mirror and that centre. The rays which proceed from any remote terreftrial object are nearly parallel at the mirror : not ftri&ly fo, but come diverging to it, in feparate pencils, or as it were bundles of rays, from each point of the fide of the obje& next the mirror ; and therefore they will not be converged to a point at the diftance of half the xadius of the minor’s concavity from its refle&ing far» ICS. Part III face, but into feparate points at a little greater di- Concave {lance from the mirror. And the nearer the objedl {s atidCVnvex to the mirror, the farther thefe points will be from it ; . irJ01~” < and an inverted image of the object will be formed in 2^9 them, which will feem to hang pendant in the air ; Aerial and will be feen by an eye placed beyond it (with gard to the mirror) in all refpefts like the objed, and ^ c^n. as diftinvft as the obje£l itfelf. cave mir. Let ArB (fig. 5.) be the reflefting furface of ai'urs. mirror, whofe centre of concavity is at C ; and let the upright objeft DE be placed beyond the centre C, and fend out a conical pencil of diverging rays from its upper extremity D, to every point of the con¬ cave furface of the mirror AcB. But to avoid con* fufion, we only draw three rays of that pencil, as DA, Dr, DB. From the centre of concavity C, draw the three right lines CA, C r, CB, touching the mirror in the fame points where the forefaid rays touch it ; and ail thefe lines will be perpendicular to the furface of the mirror. Make the angle CAd equal to the angle DAC, and draw the right line Ad for the courfe of the refle&ed ray DA: make the angle Ccz/ equal to the angle DcC, and draw the right line c d for the courfe of the refie&ed ray Dd: make alfo the angle CBz/equal to the angle DBC, and draw the right line B d for the courfe of the refie&ed ray DB. AH thefe reftefted rays will meet in the point d, where they will form the extremity d of the inverted image e d, fimilar to the extremity D of the upright objebt DE. If the pencil of rays E/, E^, E3, be alfo continued to the mirror, and their angles of reflection from it be made equal to their angles of incidence upon it, as in the former pencil from D, they will all meet at the point e by reflection, and form the extremity e of the image e d, limilar to the extremity E of the ob- jeft DE. And as each intermediate point of the oljea, be¬ tween D and E, fends out a pencil of rays in like manner to every part of the mirror, the i-ays of each pencil will be refleaed back from it, and meet in all the intermediate points between the extremities e and d of the image; and fo the whole image will be form¬ ed, not at i, half the diftance of the mirror from its centre of concavity C, but at a greater diftance, be¬ tween i and the object DE; and the image will be in¬ verted with refpea to the objea. This being well underftood, the reader will eafily fee how the image is formed by the large concave mir¬ ror of the reflecting telefcope, when he comes to the defeription of that inftrument. When the object is more remote from the mirror than its centre of concavity C, the image will be lefs than the objea, and between the objeCt and mirror ^ when the objea is nearer than the centre of concavity, the image will be more remote and bigger than the objea. Thus, if ED be the objea, de will be its image: For, as the objea recedes from the mirror, the image approaches nearer to it; and as the objea ap¬ proaches nearer to the mirror, the image recedes far¬ ther from it ; on account of the lefler or greater di¬ vergency of the pencils of rays which proceed from the objeCl : for the lefs they diverge, the fooner they, are converged to points by refleaion j and the more Part II. OPT Micro- tliey diverge, the farther they muft be refle&ed before fcopes, they meet. —[f the radius of the mirror’s concavity, and the dw ftance of the objeft from it, be known, the diftance of the image from the mirror is found by this rule : Di¬ vide the product of the diftance and radius by double the diftance made lefs by the radius, and the quotient is the diftance required. If the objedt be in the centre of the mirror’s conca¬ vity, the image and objedft will be coincident, and equal in bulk. If a man places himfelf diredlly before a large con¬ cave mirror, but farther from it than its centre of con¬ cavity, he will fee an inverted image of himftlf in the air, between him and the mirror, of a lefs fr/e than himfelf. And if he holds out his hand towards the mirror, the hand of the image will come out towards his hand, and coincide with it, of an equal bulk, when his hand is in the centre of concavity ; and he will ima¬ gine he may fliake hands with his image. If he reaches his hand farther, the hand of the image will pafs by his hand, and come between his hand and his body : ' and if he moves his hand towards either fide, the hand of the image will move towards the other; fo that whatever way the objed moves, the image will move the contrary. / « All the while a byftander will fee nothing of the image, becaufe none of the refleded rays that form it enter his eyes. $ 3. Microfccpes. Under the word Microscope a copious detail has been given of the conftrudion of thofe inftruments as they are now made by the moft eminent artifts. In that article it fell not within our plan to treat fcientifically of their magnifying powers : thefe can be explained only by the laws of refraction and reftedion, which, we (hall therefore apply to a few microfcopes, leaving our readers to make the application themfelves to fuch others as they may choofe to analife by optical prin¬ ciples. The firft and fimpleft of all microfcopes is nothing more than a very frnall globule of glafs, or a convex lens whofe focal diftance is extremely (hort. The magnifying power of this microfcope is thus afeertam- ed by Dr Smith. “ A minute objed pq, feen diftind- CCCXVXIV ly through a fmall glafs AE by the eye put clofe to it, Bgs. 6. 7. appears fo much greater than it would to the naked eye, placed at the leaft diftance qla from whence it ap¬ pears fufficiently diftind, as this latter diftance is greater than the former qY.. For having put your eye clofc to the glafs EA, in order to fee as much of the objed as poffiblc at one view, remove the objed pq to and fro till it appear moil diftindtiy, fuppofe at the di- ftance Yq. Then conceiving the glafs AE to be re¬ moved, and a thin plate, with a pin-hole in it, to be put in its place, the objed will appear diftind, and as large as before, when feen through the glafs, only not fo bright. And in this latter cafe it appears fo much greater than it does to the naked eye at the diftance 9L, either with the pin-hole or without it, as the angle pYq is greater than the angle pYq, or as the latter di¬ ftance qY is greater than the former yE. Since the mterpoiition of the glafs has no other effed than to render the appearance diftind, by helping the eye to I G S. 349 increafe the refradion of the rays in each pencil, It is Micro¬ plain that the greater apparent magnitude is entirely ^ owing to a nearer view than could be taken by the na- ked eye. As the human eye is fo conftruded, as, for reafons already affigned, to have diitind vifion only when the rays which fall upon it are parallel or nearly fo ; it follows, that if the eye be fo perfed as to lee diftindly by pencils of parallel rays falling upon it, the diftance Yq, of the objed from the glafs, is then the focal diftance of the glafs. Now, if the glafs he a fmall round globule, of about -j-’j-th of an inch dia¬ meter, its focal diftance Yq, being three quarters of its diameter, is -j-^th of an inch ; and if qY be eight inches, the diftance at which we ufually view minute objeds, this globule will magnify in the proportion of 8 to or of 160 to x. 2. The Double or Compound Microfcope (fig. 8.) con- fifts of an o'jed-glafs cd, and an eye-glafs ef. The fmall objed ab is placed at a little greater diftance from the glafs cd than its principal focus ; 10 that the pencils of rays flowing Iro n the different points of the objed, and palling through the glafs, may be made to converge, and unite in as many points between^ and/j, where the image of the objed.will be formed: which image is viewed by the eye through the eye- glafs ef. For the eye-glafs being fo placed, that the image gh may be- in its focus, and the eye much about the fame diftance on the other fide, the rays of each pencil will be parallel after going out of the eye- glafs, as at e and f till they come to the eye at where they will begin to converge by the refradive power of the humours ; and after having crofted each other in the pupil, and palled through the cryftalline and vitreous humours, they will be colleded into points on the retina, and form the large inverted image AB thereon. By this combination of lenfes, the aberration of Ufe of fe- the light from the figure of the glafs, which in a globule of the kind above-mentioned is very confide-p0un(j ur;. rable, is in fome meafure corredted. This appeared crofeopc. fo fenfibly to be the cafe, even to former opticians, that they very foon began to make the addition of another lens. The inilrnment, however, receives a confiderable improvement by the addition of a third lens. For, fays Mr Martin, it is not only evident from the theory of this aberration, that the image of any point is rendered lefs confufed by refradion thro* two lenfes than by an equal retradion through one j but it alfo follows, from the fame principle, that the fame point has its image ilill lefs confufed when form¬ ed by rays refraded through three lenfes than by an equal refradion through two; and therefore a third lens added to the other two will contribute to make the image more diftind, and confequentiy the inftru* ment more complete. At the fame time the field of view is amplified, and the ufe of the microfcope ren dered more agreeable, by the addition of the other lens. Thus alfo we may allow a fomewhat larger aper¬ ture to the objed-lens, and thereby increafe the bright- nefs of objeds, and greatly heighten the pleafure of viewing them. For the fame reafon, Mr Martin has propofed a four-glafs microfcope, which anfwers the purpofes of magnifying and of diftind vifion ftill more perfedly. The magnifying power of double microfcopea is ea^ 7. OPT filyUnderlined, thus: The glafs L next theobjeftPO^ is very fmal!, and very much convex, and confequently Plate its f°cal diftance LF is very Ihort; the diftance LQ of CCCLXIV the fmall obje& PQjs but a little greater than LT : hfer*9- Greater it mull be, that the rays flowing from the ob¬ ject may converge after palling through the glafs, and, croffing one another, form an image of the objeft; and it mull be but a little greater, that the image pq may be at a great diftance from the glafs, and confe- quently may be much larger than the objeft itfelf. I his pidure pq being viewed through a convex glafs AE, whofe focal diftance isyE, appears diftinft as in a telefcope. b.ow the objedl appears magnified upon two accounts ; firft, becaufe, if we viewed ics picturej&y with the naked eye, it would appear as much greater than the objeft, at the fame diftance, as it really is greater than the objeft, ©r as much as Ly is greater than LQj and, fecondly, becaufe this pic¬ ture appears magnified through the eye-glafs as much BS the leaft diftance at which it can be feen diftin&ly with the naked eye, is greater than q E, the focal diftance of the eye-glafs. For example, if this latter ratio be five to one, and the former ratio of L y to X-QJie 20 to i; then, upon both accounts, the objeft will appear y times 20, or 100 times greater than to the naked eye. Fig. 10. reprefents the feeftion of a compound mi- crofeope with three lenfes. By the middle one GK the pencils of rays coming from the objey, are termi¬ nated on one fide by the common axis of the fpecula, and on the other by a line PEp, drawn through the centre E of the concave ABC. Dikewife the images pq and are terminated by the common axis and by the line cp™, drawn through the centre e of the con¬ vex abc*. Hence, by the fimilar triangles ™ *■ et pqe,* and alfo pyE, PQE, we have ^ * :py : : : ye : ; m : 1, and py : PQj : yE • QE : : « : 1 ; and con¬ fequently w-k ; PQ^, « : mn : 1, whence =zmn x PQ. Now if //. be the focal diftance of the eye-glafs /, the points P, of the objedl, ate feen through it by the rays of two pencils emerging parallel to the lines *r/, y-I refpedtivcly ; that is, PQ^appears under aa angle equal to w/*, which is as —ancj to the naked eye at the diftance d from it appears under an angle PsQ^which is and therefore is magnified in the ratio of thefe angles, that is, of mnd to y.l. Coro!. Having the numbers m, », d, to find an eye-glafs which ftiall caufe the microfcope to magnify M times in diameter, take *7=:-^-. For the appa¬ rent magnitude is to the true as M : 1 : : mnd i */, e fhall conclude this part of our fubjecl with the An eafy following eafy method of afeertairiing the magnifyintm.ethod of power of fuch microfcopes as are moil in ufe. 0afeertaining I he apparent magnitude of any objedl, as mull tlie ma^ nifying appear from what hath been already delivered, is po-iyer of meafured by the angle under which it is feen ; and the moft this angle is greater or fmaller according as thecolnniGa objea is near to or far from the eye; and of confe- quence the lefs the diftance at which it can be viewed tlie larger it will appear. The naked eye is unable to diftinguifh any objea brought exceedingly near it: but looking through a convex lens, however near the focus of that lens be, there an objea may be diftindtly feen ; and the fmaller the lens is, the nearer will be its focus, and in the fame proportion the greater will be its magnifying power. From thefe principles it is eafy to find the reafon why the firft or greateft tnag- r.ifiers are fo extremely minute ; and alfo to calculate the magnifying power of any convex lens employed in a Angle microfcope : For as the proportion of the natural fight is to the focus, luch will be its power of magnifying. If the focus of a convex lens, for in- ftance, be at one inch, and the natural fight at eight inches, which is the common itandard, an objeft may be feen through that lens at one inch diftance from the eye, and will appear in its diameter eight times larger than Part IT. OPT Micio- fcopen. 261 Further ©hferva- tiors on the mag nifying power of micro- fcopes. titan it does to the naked eye: but as the object is rringnified every way, in l?ngth as well as in breadth, we muft fquare this diameter to know how much it really is enlarged; and we then find that its fuperficies is magnified 64 times. Again, fuppofe a convex lens whofe focus is only one-tenth of an inch diftant from its centre; as in eight inches, the common diftance of diftinft vifion with the naked eye, there are 80 fuch tenths, an objedl may be feen through this glafs 80 times nearer than with the naked eye. It will, of confequence, appear 80 times longer, and as much broader, than it does to common fight ; and therefore is 6400 times magni¬ fied. If a convex glafs be fo fmall that its focus is only iV of an inch diftant, we find that eight inches contains 1 60 of thefe twentieth-parts; and of confe¬ quence the length and breadth of any objeft feen through fuch a lens will be magnified 160 times, and tbe whole furface 25,600 times. As it is an eafy matter to melt a drop or globule of a much fmalk-r diameter than a lens can be ground, and as the focus of a globule is no farther off than a quarter of its own diameter, it muft of confequence magnify to a pro¬ digious degree. But this excefiive magnifying power is much more than counterbalanced by its admitting fo little light, want of diftinftnefs, and fhowing fuch a minute part of the objedt to be examined ; for which reafon, thefe globules, though greatly in vogue feme time ago, are now almoit entirely rejected. Mr Leeu¬ wenhoek, as has been already obferved, made ufe only of fingle roicrofcopes confilting of convex lenfes, and left to the Royal Society a legacy of 26 of thofe glafles. According to Mr Folke’s defeription of thefe, they were all exceedingly clear, and fhowed the objedl very bright and diflindl; ‘‘which (fays Mr Folkes) muft be owing to the great care this gentle¬ man took in the choice of his glafs, his exa&nefs in giving it the true figure, and afterwards, among many, referving only fuch for his ufe as upon trial he found to be moft excellent. Their powers of magni¬ fying are different, as different objefts may require: and as on the one hand, being all ground glaffes, none of them are fo fmall, or confequently magnify 1 C s. to fo great a degree, as fome of thofe drops frequently ufedin other microfcopes; yet, on the other hand, the diftindtnefs of thefe very much exceeds what I have met with in glaffes of that fort. And this was what Mr Leeuwenhoek ever propofed to himfelf; reje&ing all thofe degrees of magnifying in which he could not fo well obtain that end. For he informs us in one of his letters, that though he had above 40 years by him glaffes of an extraordinary fmallnefs, he had made but very little ufe of them ; as having found, in a long courfe of experience, that the moft confider- able difeoveries were to be made with fuch glaffes as, magnifying but moderately, exhibited the object with the greateft brightnefs and diftindfion.” In a fingle microfcope, if you want to learn the magnifying power of any glafs, no more is neceflary than to bring it to its true focus, the exad place whereof will be known by an objedl’s appearing perfectly diftinft and iharp when placed there. Then, with a pair of fmall compaffes, meafure, as nearly as you can, the diftance from the centre of the glafs to the object you was viewing, and afterwards applying the compaffes to any ruler, with a diagonal i’cale of the parts of an inch marked on it, you will eafily find how many parts of an inch the faid diftance is. When that is known, compute how many times thofe parts of an inch are contained in eight inches, the common ftandard of fight, and that will give you the number of times the diameter is magnified : fquaring the dia¬ meter will give the fuperficies; and, if you would learn the folk! contents, it will be fhown by multiply¬ ing the fuperficies by the diame’ter. The fuperficies of one fide of an objedl only can be feen at one view ; and to compute how much that i« magnified, is moft commonly fufficient: but fome-* times it is fatisfaffory to know how many minute objects are contained in a larger; as fuppofe we de¬ fire to know how many animalcules are contained in the bulk of a grain of fand : and to anfwer this, the cube, as well as the furface, muft be taken into the account. For the greater fatisfa&ion of thofe who are not much verfed in thefe matters, we fhall here fub- join the following TABLE OPTIC 3tv3 Alicro* fcopes’ s. Part II, TABLE of the magnifying powers of convex glasses, employed in Single Mlcrof(opesi according to the diilance of their focus ; Calculated by the Laic of an inch divided int(% i oo parts. Showing how manv times the diameter, the superficies, and the cube of an object, is magnified, when viewed through fuck glafles, to an eye whofe natural light is at eight inches, or 800 of the toodth-parts of an inch. The Re- framing Telefcope. Magnifies the Dia. meter. or The focus of a glafs at 50I f 4-, TU» 01' 40 tu, or 3° •j-, or 20 13 12 11 tuj or 10 ^ 9 ' 8 7 6 5 4 3 2 U To. or -a 16 20 26 40 53 57 61 66 72 80 88 100 1 H *33 360 200 266 400 800 Magnifies the Super¬ ficies. 256 400 676 i,6co 2,809 3>249 3.72i 4>356 , 5.i84 6,400 7.744 10,000 12,996 17,689 25,600 40,000 7°, 756 160,000 640,000 Magnifies the Ch.be ci" an Wbjedl. 4.°961 8,000 i7.576 64,000 148,877 i85>193 226,981 287,496 373,248 512,000 f Times. 681,472' I ,000,000 1,481,544 2,352,637 4,096,000 8,000,000 18,82 1,096 64,000,000 5 12,000,000 The gieateft magnifier in Mr Leeuwenhoek’s ca- .binet of microfcopes, prefented to the Royal Society, has its focus, as nearly as can •well be meafured, at -one-twentieth of an inch diftance from its centre ; and confequently magnifies the diameter of an objedt 160 times, and the fuperficies 25,600. ^But the great- eit magnifier in Mr Wilfon’s fingle microfcopes, as they are now made, has ufually its focus at no farther diilance than about the 50th part of an inch; whereby it has a power of enlarging the diameter of an objedl 400, and its fuperficies 160,000 times. 264 The magnifying power of the folar microfcope mu ft The mag- calculated in a different manner ; for here the dif- ro'ver^of Rrence between the focus of the magnifier and the di- the folar fiance of the feretn or fneet whereon the image of the microfcope objedl is call, is the proportion of its being magnified, calcirlafed guppofe, for infiance, the lens made ufe of has its fo- fr..mThatf cus at an ‘nc^> ancl t^ie i,'creen *s pLced at the di- ©f others, fiance of five feet, the objeA will then appear magni¬ fied in the proportion of five feet to half an inch: and ns in five feet there are 120 half inches, the diameter will be magnified 120 times, and the fuperficies 14,400 times ; and, by putting the fereen at farther difiances, you may magnify the objedl almoft as much as you pleafe ; but Mr Baker advifes to regard difiindtnefs more than bignefs, and to place the fereen juft at that difiance where the objedt is feen moft diftindf and clear. With regard to the double refledling microfcope, Mr Baker obferves, that the power of the objedf-lens is indeed greatly increafed by the addition of two eye- glaffes ; but as no objedt-lens can be ufed with them of fo minute a diameter, or which magnifies of itfelf near fo much as thofe that can be ufed alone, the gbfies of this microfcope, upon the whole, inagnity little or nothing rhore than thofe of Mr Willon’s lingle N° 249. one; the chief advantage arifing from a combination of lenfes being the light of a larger field or portion -of an objedl magnified in the fame degree. $ 4. Telefcopes. I. The Refracting Telescope. ^ After what has been faid concerning thefl;rudlure^atlveof of the compound microfcope, and the manner in which ^ the rays pafs through it to the eye, the nature of the icfc0pe. common altronomical telefcope will eafily be under- .ftood : for it differs from the microfcope only in that the objedl is placed at fo-great a dillance from it, that the rays of the fame pencil, flowing from thence, may be conlidered as falling parallel to one another upon the objeef-glafs ; and therefore the image made by that glafs is looked upon as coincident with its focus ot parallel rays. 1. This will appear very plain from the 12th figure,^ ^!^jy in which AB is the objedt emitting the feveral pencils'" of rays A c cl. Bed, &c. but fuppofed to be at fo great a diftance from the objeef-glafs c d, that the rays of the fame pencil may be conlidered as parallel to each other ; they are therefore fuppofed to be collected inteAheir refpeftive foci at tfi’e points m and^, fituated at the focal diftance of the objedt-glafs c d. Here they form an image E, and croffing each other proceed diverging to the eye-glafs hg ; which being placed at its own focal diftance from the points w and/>, the rays of each pencil, after pafling through that glafs, will become parallel among themfelve^ ; but the pencils themfelves will converge confiderably with refpedf t« one another, even fo as to crols at e, very little farther from the glafs g h than its focus ; hecaule, when they entered the glafs, their axes were almoft parallel, as coming through the object-glafs at the point k, to whole 2 66 Magnify¬ ing power of. Partir. OPT Refra6Hng whofe dlftaHce the breadth of the eye-glafs in a long Telefcope. telefcope bears very fm ill proportion. So that the place of the eye will be nearly at the focal diftance of the eye-glafs, and the rays of each refpefKve pencil being parallel among theinfelvea, and their axes croffing each other in a larger angle than they would do if the objefl were to be feen by the naked eye, vifion will be diftimSt, and the obje& wo'll appear magnified. The power of magnifying in this telefcope is as the focal length of the objeft-glafs to the focal length of the eye-glafs. Dem. In order to prove this, we may confider the angle A/fB as that under which the objeclwould be feen by the naked eye ; for in confidering the diftance of the objeft, the length of the telefcope may be omit¬ ted, as bearing no proportion to it. Now the angle under which the objedt is feen by means of the tele¬ fcope is o-e h, which is to the other AiB, or its equal gLb, as the dillance from the centre of the objecl-glafs to that of the eye-glafs. The angle, therefore, under which an objedt appears to an eye a {lifted by a tele¬ fcope of this kind, is to that under which it would be feen without it, as the focal length of the objedt-glafs to the focal length of the eye-glafs. It is evident from the figure, that the vifible area, or fpace which can be feen at one view when we look through this telefcope, depends on the breadth of the eye-glafs, and not of the objedft glafs ; for if the eye- glafs be too fmall to receive the rays^wi, p h, the ex¬ tremities of the objedl could not have been feen at all: a larger breadth of the objeft-glafs conduces only to the rendering each point of the image more luminous by receiving a larger pencil of rays from each point of , the objeft. ©bje&sfecn It *s in this telefcope as in the compound micro- through, fcope, where we f^e, when we look through it, not the objeft itfelf, but only an image of it at CED : now that image being inverted with refpedt to the objed, as it is, becaufe the axes of the pencils that flow from the objed crofs each other at h, obje&s feen through a telefcope of this kind neceflarily appear inverted. This is a circumftance not at all regarded by aftro- nomers : but for viewing objeds upon the earth, it is convenient that the telelcope fhould reprefent them in their natural pofture ; to which ufe the telefcope with three eye-glafft's, as reprefented fig. 13. is peculiarly CCCLXIV aclapted, and the progrefs of the rays through it from the objed to the eye is as follows : AB is the objed fending out the feveral pencils Acd, ¥>cd, &c. which pnfling through the objed- a68 glafs c d, are colleded into their refpedive foci in CD, Common where they form an inverted image. From hence they refracting proceed to the firft eye-glafs ef, whofe focus being at lhows°ob ^ t^ie rays eac^ Penc,i are rendered parallel among jeitsereCt. themfelves, and their axes, which were nearly parallel before, are made to converge and crofs each other: the fecond eye-glafs g being fo placed that its focus fhall fall upon rrt, renders the axes of the pencils which diverge from thence parallel, and caufes the rays of each, which were parallel among themfelves, to meet again at its focus EF on the other fide, where they form a fecond image inverted with refped to the for¬ mer, but ere£l with refped to the objed. Now this image being feen by the eye at a b through the eye- glafs i h, affords a dired reprefentation of the objed, and under the fame angle that the firft image CD Vol.XIII. Parti. inverted. Plate 1 c S- 351 would have appeared, had the eye been placed at /, Rtfiafling fuppofing the eye-glaffes to be of equal convexity ; Telefcopes. and therefore the objed is feen equally magnified in '“"~v this as in the former telefcope, that is, as the focal di¬ ftance of the objed-glafs to that of any one of the eye- glaffes, and appears ered. If a tclefcope exceeds 20 feet, it is of no ufe in view¬ ing objeds upon the furface of the earth ; for if it mag¬ nifies above 90 or 100 times, as thofe of that length ufually do, the vapours which continually float near the earth in great plenty, will be fo magnified as to render vifion obfeure. 2. Tbs Gallilean Telefcope with the concave eye-glafs is conftruded as follows : telefcope, AB (hg. 1.) is an objed fending forth the pencils pi3te of rays k lm, &c. which, after pafling through CCCLXV. the objed-glafs c d, tend towards eE/ (where we will fuppofe the focus of it to be), in order to form an in¬ verted image there as before ; but in their way to it are made to pafs through the concave glafs n 0, fo pla¬ ced that its focus may fall upon E, and confequently the rays of the feveral pencils which were converging towards thofe refpedive focal points e, E, f, will be rendered parallel among themfclves : but the axes of thofe pencils crofling each other at F, and diverging from thence, will be rendered more diverging, as re¬ prefented in the figure. Now thefe rays entering the pupil of an eye, will form a large and diftind image a b upon the retina, which will be inverted with refped to the objed, becaufe the axis of the pencils crofs in F. The objed of courfe will be feen ered, an 1 the angle-under which it will appear will be equal to that which the lines rzF, bY, produced back through the eye-glafs, form at F. It is evident, that the lefs the pupil of the eye is, the lefs is the vifible area feen through a telefcope of this kind ; for a lefs pupil would exclude fuch pencils as proceed from the extremities of the objed AB, as is evident from the figure. This is an inconvenience that renders this telefcope unfit for many ufes; and is only to be remedied by the telefcope with the convex eye- glaffes, where the rays which form the extreme parts of the image are brought together in order to enter the pupil of the eye, as explained above. It is apparent alfo, that the nearer the eye is placed to the eye-glafs of this telefcope, the larger is the area feen through it; for, being placed clofe to the glafs, as in the figure, it admits rays that come from A and B, the extremities of the objed, which it could not if it was placed farther off. 2 The degree of magnifying in this telefcope is in the vta - ify. fame proportion with that in the other, vi-z,. as the fo-irg pwver ; cal diftance of the objed-glafs is to the focal diftanceoi- of the eye-glafs. For there is no other difference but this, %n%. that as the extreme pencils in that telefcope were made to converge and form the angle geh (fig. 12.), ox ink pja(.^ (fig. 13.), thefe are nowmade todiverge and form theccC..Xtv angle aYb (fig. 1.); which angles, if the concave glafs Piafe in one has an equal refradive power with the convex CCC'LXV. one in the other, will be equal, and therefore each kind will exhibit the objed magnified in the fame de¬ gree. There is a deftd in all thefe kinds of telefcopes, not to be remedied in a fingle lens by any means what¬ ever, which was thought only to arife from hence, Y y viz-. 354 OPT Refracting v}z, that fphencal glafTes do not colleft rays to one Teiefcore. and t^e came point.’ But it was happily difcovrred ‘ by Sir Ifaic Newton, that the imperfection of this fort of telefcope, fo far as it arifes from the fpherical form of the glaffes, bears ahnoft no proportion to that which is owing to the different refrangibility of light. This diverfity in the refradtion of rays is about a 28th part of the whole ; fo that the objeCt-glafs of a tele¬ fcope cannot colledt the rays which flow from any one point in the objedt into a lefs room than the circular fpace whofe diameter is about the 56th part of the breadth of the glafs. Plate To fhow this, let AB (fig.2.) reprefent a convex lens, CCCi.XV.ancj let CDF be a pencil of rays flowing from the point D ; let H be the point at which the leaft re¬ frangible rays are colledted to a focus; and I, that where the moft refrangible concur. Then, if IH be the 28th part of EH, IK will be a proportionable part of EC (the triangles H(K and HEC being ilmilar): confequently LK will be the 28th part of FC. But MN will be the kaft fpace into which the rays will be colledted, as appears by their progrefs reprefenced in the figure. Now MN is but about half of KL ; and therefore it is about the 56th part of CF: fo that the diameter of the fpace into which the rays are colledl- ed will be about the 56th part of the breadth of that part of the glafs through which the rays pafs ; which was to be fhown. Since therefore each point of the ©bjedt will be re- prefented in fo large a fpace, and the centres of thofe fpaces will be contiguous, becaufe the points in the objedl the rays flow from are fo ; it is evident, that the image of an objedf made by fuch a glafs mull be a mod confufed reprefentation, though it does not ap¬ pear fo when viewed through an eye-glafs that magni¬ fies in a moderate degree; confequently the degree of magnifying in the eye-glafs muft not be too great with refpedl to that of the objedl-glafs, left the confu- fon become fenfible. Notwith{landing this imperfedlion, a dioptrical te¬ lefcope may be made to magnify in any given degree, provided it be of fufficient length ; for the greater the focal diftance of the objedl-glafs is, the lefs may be the proportion which the focal diftance of the eye-glafs ,7I may bear to that of the objedl-glafs, without render- ^efra&ing ing the image obfeure. Thus, an objedl-glafs, whofe telefcopes focal diftance is about four feet, will admit of an eye- tmagnify in ^japs wh0fe focal diftance fhall be little more than an to'thdr °n ^ch, and confequently will magnify aim oft 48 times; length. but an objedl-glafs of 40 feet focus will admit of an eye-glafs of only four inches focus, and will therefore magnify 120 times; and an objedl-glafs of 100 feet focus will admit of an eye glafs of little more than fix inches focus, and will therefore magnify ahaoft 200 times. The reafon of this difproportion in their feveral de¬ grees of magnifying is to be explained in the follow¬ ing manner : Since the diameter of the fpaces, into which rays flowing from the feveral points of an ©b- jedl are colledted, are as the breadth of the objedl- glafs, it is evident that the degree of confufednefs in the image is as the breadth of that glafs ; for the de¬ gree of confufednefs will only be as the diameters or breadths of thofe fpaces, and not as the fpaces them- jfeives. Now the focal length of the eye-glufs, that is, I C S. Part If. its power of magnifying, muft be as that degree; for, RefA&Ing if it exceeds it, it will render the confufednefs fen- Telefcope. fible; and therefore it muft be as the breadth or dia- ^ meter of the objedl-glafs. The diameter of the ob¬ jedl-glafs, which is as the fquare root of its aperture or magnitude, mull be as the fquare-root of the power of magnify ing in the telefcope ; for unlefs the aper¬ ture itfelf be as the power of magnifying, the image will want light: the fquare root of the power of mag¬ nifying will be as the fquare root of the focal diftance of the objedl-glafs; and therefore the focal diftance of the eye-glafs muft be only as the fquare root of that of the objedl-glal's. So that in making ufe of an objedl-glafs of a longer focus, fuppofe, than one that is given, you are not obliged to apply an tye-glafs of a proportion ably longer focus than what would fuit the given objedl-glafs, but fuch an one only whofe fo¬ cal diftance fhall be to the focal diftance of that which will fuit the given objedl-glafs, aS the fquare root of the focal length of the ofcjedl glafs you make ufe of, is to the fquare root of the focal length of the given one. And this is the reafon that longer telefcopes are capable of magnifying in a greater degree than fhorter ones, without rendering the objedl confufed or coloured. 272 3. But the inconveniency of very long telefcopes is fo Their^nr-^ great, that different attempts have been made to remove remedied it. Of thefe, the moft fuccefsful have been by Dollondby Pollond and Blair ; and the general principles upon which thefe and Blair, eminent opticians proceeded have been mentioned in the hiftorical part of this article, and in the preceding fedlioru The public will foon be favoured with a fuller account of Dr Blair’s difeovery from his own pen ; and of Dol- lond’s, it may be fufficient to obferve, in addition to what has been already faid, that the objedl-glaffes of his telefcopes are cotnpofed of three diftindl lenfes, two convex and one concave ; of which the concave one is placed in the middle, as is reprefented in fig. 3. where a and c fhow the two convex lenfes, and bb the concave one, which is by the Britifh artifts placed in. the middle. The two convex ones are made of Lon¬ don crown glafs, and the middle one of white flint glafs; and they are all ground to fpheres of different radii, according to the refra&ive powers of the diffe¬ rent kinds of glafs and the intended focal diftance of „ the objedl-glafs of the telefcope. According to Bof- covich, the focal diftance of the parallel rays for the concave lens is one-half, and for the convex glafs one- third of the combined focus. When put together,, they refradi the rays in the following manner. Let aby a b (fig. 4.), be two red rays of the fun’s light falling parallel on the firfl convex lens c. Suppofing there was no other lens prefent but that one, they would then be converged into the lines b be, and at laft meet in the focus q. Let the lines g hy g hy re¬ prefent two violet rays falling on the furface of the lens. Thefe are alfo refradled, and will meet in a fo¬ cus ; but as they have a greater degree of refrangibi- lity than the red rays, they muft of confequence con¬ verge more by the fame power of refradtion in the glafs, and meet fooner in a focus, fuppofe at r.—Let now the concave lens dd bt placed in fuch a manner as to intercept all the rays before they come to their focus. Were this lens made of the fame materials, and ground to the fame radius with the convex one, it 1 would Part If. ° P .T Kdr^dlint; v-0uM have the fame power to caufe the rays diverge Tekfcpe that the formev had to make them converge. In this ' v cafe, the red rays would become parallel, and move on in the line o o, o o': But the concave lens, being made of flint glafs, and upon a (horter radius, has a greater refra&ive power, and therefore they diverge a little after they come out of it ; and if no third lens was interpofed, they would proceed diverging in the lines opt, opt; but, by the interpofition of the third lens ovo, they are again made to converge, and meet in a focus fomewhat more dilfant than the former, as at x. By the concave lens the violet rays are alfo refradted, and made to diverge : but having a greater degree of ' refrangibility, the fame power of refradtion makes them diverge fomewhat more than the red ones ; and thus, if no third lens was interpofed, they would proceed in inch lines as /mn, linn. Now as the different y 'coloured rays fall upon the third lens with different degrees of divergence, it is plain, that the fame power of rtfra&ion in that lens will operate upon them in fueh a manner as to bring them all together to a locus very nearly at the fame point. The red rays, it is true, require the greateft power of refraftion to bring them to a focus' but they fall upon the lens with the leall degree of divergence. The violet rays, though they require the leaft power of refradfion, yet have the greateft degree of divergence; and thus all meet toge¬ ther ai the point x, or very nearly fo. 13ut, though we have hitherto fuppofed the refrac- tion of the concave lens to be greater than that of the convex ones, it is eafy to fee how the errors occafion- ed by the lirft lens may be corredted by it, though it fhould have even a lefs power of refradtion than the Plat, convex one. Thus, let be two^rays CCCLXV.of red light falling upon the convex lens r, and re.radt- ed into the focus q ; let alfo g h, g h, be two violet rays converged into a focus at r ; it is not neceflary, in or¬ der to their convergence into a common focus at x, that the concave lens fhould make them diverge, it is fufficient if the glafs has a power of difperfing the vio¬ let rays fomewhat more than the red ones; and many kinds of glafs have this power of difpeifing fome kinds of rays, without a very great power of refradfion. It is better, however, to have the objedf-glafs compofed of three lenfes ; becaufe there is then another correc¬ tion of the aberration by means of the third lens; and^ it might be impollible to find two lenfes, the errors of which would exactly corredt each other. It is alfo eafy to fee, that the efida may be the fame whether the concave glafs is a portion of the fame Ipheie with the others or not ; the eftea depending upon a com¬ bination of certain circumftances, of which there is an infinite variety. By means of this corredtion of the errors anfing from the different refrangU ility of the rays of light, it is poflible to fliortei-i dioptric telelcopes conli .er- ably, and yet leave them equal magnifying powers. The reafon of this is, that the errors anfing from the objea-glafs being removed, thofe which are occalion- ed by the eye glafs are inconliderable : for the error is always in proportion to the length of the focus in any glafs ; and in very long telefcopes it becomes ex¬ ceedingly great, being no lefs than -j^th of the whole; but in glaffes of a few inches focus it becomes trifling. Kefiading telefcopes, which go by the name of Dol- ICS. 355' land's, are therefore now conftrufled in the following ^edhag manner. Let AB (fig. 6.) reprefent an objed-g.ais compofed of three lenfes as above defenbed, and con¬ verging the rays I, 2, 3, 4> to a very diftant fo¬ cus as at x. By means of the interpofed lens CJJ, however, they are converged to one much nearer, as at y, where an image of the objedt is formed. 1m* rays diverging from thence fall upon another .ens Lr, where the pencils are rendered parallel, and an eye placed near that lens would fee the objedf magnified and very diftindf. To enlarge the magnifying power ftill more, however, the pencils thus become parahe are made to fall upon another at GH; by which they are again made to converge to a diftant focus : but, being intercepted by the lens IK, they are made to meet at the nearer one z; whence diverging to LM, they are again rendered parallel, and the eye at N fees the objedt very diftindily. . . From an inlpedion of the figure it is evident, that Dollond’s telefcope thus conftrudted is in fadt two te¬ lefcopes combined together; the fir ft ending with the lens EF, and the fecond with LM. In the firfl vve do not perceive the objedt itfeif, but the image o it formed at y; and in the fecond we perceive only the image of that image formed at 2. Neverthelefs fuca telefcopes are exceedingly diftindt, and reprefent ob- jedts fo clearly as to be preferred, in viewing terreftnai things, even to refledtors themfelves. The latter indeed have greatly the advantage in their powers of magni¬ fying, but they are much deficient in point of light. Much more light is loft by rcfledtion than by refrac¬ tion : and as in thtfe telefcopes the light mint una¬ voidably fuffer two refledtions, a great deal of it is loft ; nor is this lofs counterbalanced by the greater aperture which thefe telefcopes will bear, which en¬ ables them to receive a greater quantity of light than the refradting ones. The metals of reflect ng telefcopes alfo axe very much fubjed to tarniih, and require much more dexterity to clean them than the glaffes of retrac¬ tors ; which makes them mere troublefome and expen- five, though for making difeoverks in the celeftial re¬ gions they are undoubtedly the only proper mitru- ments which have been hitherto conltruCted. If -Ur Blair indeed (hall be fo fortunate as difeover a vitre¬ ous fubftance of the fame powers with the fluid in the compound objed-glafs of his telefcope (and from his abilities and perfeverance we have every thing to hope), a refradling telefcope may be conflruCted fuperior for every purpofe to the befl refledfor. II. The Reflecting Telescope. The inconveniences an Ting from the great length of refradling telefcopes, before Dollond’s difeovery, are fufficiendy obvious ; and thefe, together with the dif¬ ficulties occafioned by the different refrangibihty of 273 > light, induced Sir Ifaac Newton to turn his attention Newmn, to the fubjedl of reflection, and endeavour to realize 1 h the ideas of himfelf and others concerning the polfibi- lity of conftrudting telefcopes upon that principle. The inftrument which he contrived is repreiented, fi-T. 7. where ABCD is a large tube, open at AD and clofed at BC, and of a length at leaf! equal to the diilance of the focus from the meta ti: fpherical con¬ cave fpeculum GH placed at the end BC. I he rays LG, EH, &c. proceeding from a remote ohjedl PR, Y y 2 interfedil 356 Reflecting 'Feiefcoj^e. o 274 Its magni lying power. Plate eccLxy interfcft one another fomewhere before they enter the fo that EG, eg are thofe that come from the lower part of the objeft, and//;, FH from its upper part : thefe rays, after falling on the fpcculum GH, will he reflefted, fo as to converge and meet in m n, ■w-here they will form a perfect image of the objeft. Pmt as this image cannot be feen by the fpeftator, they are intercepted by a fmall plane metallic fpeculum KK, inteifefting the axis at an angle of by which the rays tending to m n will be reflected towards a hole LL in the fide of the tube, and the image of the objedl T-n - tiUS he formed in ? S 5 which ,mage will he lefs cntinct, becaufe fome of the rays which would other- wife fall on t!ie concave fpeculum GH, are intercept¬ ed by the plane fpeculum : neverthelefs it will appear in a confiderable degree diftinft, becaufe the aperture of the tube, and the fpeculum GH are large. In the lateral ho e LL is fixed a convex lens, whole focus is at Sy ; and therefore this lens will refraft the rays that proceed from any point of the image, fo as at their exit they will be parallel, and thofe that proceed from the extreme points S y will converge after refraftion, and form an angle at O, where the eye is placed; which will fee the im ige S y, as if it were an objeft’ through the lens LL ; confequently the object will appear enlarged, inverted, bright, and diftina. In LL ienfes of different convexities may be placed, which by being moved nearer to the image or farther from it, would reprefent the objed more or lefs magnified, pro¬ vided that the lurface of the fpeculum GH be of a perfedly fpherical figure. If, in the room of one lens LL, tbiee lenfes be oifpofed in the lame manner with ihe three eye-glalTes of the refrading telefcope, the objed will appear ered, but lefs diftind than when it isobferved with one lens. On account of the pofition ol the eye in this telefcope, it is extremely difficult to thred the mftrument towards any objed. Huygens therefore, firft thought of adding to it a fmall refrad- ing telefcope, the axis of which is parallel to that of the refledor. 1 his is called a fitvler, or director. The .Newtonian telefcope is alfo furnilhed with a fuitable apparatus for the commodious ufe of it. In order to determine the magnifying power of this teleicope, it is to be confidered that the plane fpeculum KK is of no ufe in this refped. Let us then fuppofe, that one ray proceeding from the objed coincides with the axis GLIA (fig. 8.) of the lens and fpeculum ; let /G be another ray proceeding from the lower extreme of the objed, and palling through the focus I of the fpeculum KH : this will be refleded in the diredion lid, parallel to the axis GLA, and falling on the lens ^ L / will be refraded to G ; fo that GL will be e?”ai.t0 3nd ^^ ^ r^° ^ie naked eye the objed would appear under the angle Ibi^s HA ; but by means of the tekfeope it appears under the angle ^ i w r/I L ~ ^ and the angle Idi is to the- angfe Id; confequently the apparent mao-- fj!tUumby therte,eftoPe is ^ that by the naked eye as aie diftance of the focus of the fpeculum from the fpe- t0 tht dlftance °f the focus of the ^ns from XT ThbKneWi0ni’a r telefcoPe ftill inconvenient. Notwithftanding the contrivance of Huygens, objeds a tie by it found with difficulty. The telefcope of TICS. Gregory, tnerefore, loon obtained the preference, to wumh for mofi; purpofes it is juftiy iruitled, as the reaoer will perceive from the following conftrudion. . ^ 11 9-) be a brafs tube, in which L//D is a metallic concave fpeculum, perforated in the mid- , at ^ 5 ano Eh a lefs concave mirror, fo fixed by the arm or itrong wire RT, which is moveable by means of a long ferew on the outfide of the tube, as to be moved nearer to or farther from the larger fpe- culurn L bdl), ns axis being kept in the fame line with that of the great one. Let AB repreftnt a very i emote onjed, from each part of which Hue pencils of r^y\e' g- C ^ C D, from A the upper extreme of the objed, and I L, i/t from the lower part B ; the rays 1 L, CL from the extremes croffing one another be¬ fore they enter the tube. Thefe rays, falling uoon the larger mirror LD, are refleded from it into the fo- C11S iVi?kwbe.re tiiey form an Jnverted image of the objed AB, as in the Newtonian tekfeope. From this image the rays, iffuing as from an objed, fall upon the fmall mirror EF, the centre of which is at e ;.fo that after refledion they would meet in their foci at Q Q and there form an ered image. But fince an at that p.aee could fee but a fmall part of an objed, in order to bring rays from more r’.ifiant parts ot it into the pupil, they are intercepted by the plano-convex lens MN, by which means a fmaller ered ima re is formeu at PV, which is viewed through the me in feus •So by an eye at O. This menifeus both makes the lj'ys ° Aeacb Pencil parallel, and magnifies the imaoe Pv.^ At the place of this image all the foreign rays are intercepted by the perforated partition ZZ. For the fame reafon the hole near the eye O is very nar¬ row. When nearer objeds are viewed by this tcle- cope, the imall fpeculum EF is removed to a greater diftance from the larger ED, fo that the fecond image may be always formed in PV ; and this diftance is to be adjufted (by means of the ferew on the outfide of the gieat tube) according to the form of the eye of the fpedator. It is alfo neceflary, that the axis of the telefcope ftiould pafs through the middle of the fpecu¬ lum EF, and its centre, the centre of the fpeculum, LL, and the middle of the hole X, the centres of the knfes MN, SS, and the hole near O. As the hole X in the fpeculum LL can refled none of the rays iffuin- from the objed, that part of the image which cone • fponds to the middle of the objed muft appear to the obferver more dark and confufed than the extreme parts of it. Befides, the fpeculum EF will alfo inter¬ cept many rays proceeding from the objed; and there¬ fore, unlefs the aperture TT be large, the objed muft- appear in fome degree obfeure. In the beft refleding telefcopes, the focus of the, fmall mirror is never coincident with the focus of the great one, where the firft image KPI is formed, but a little beyond it (with refped to the eye), as at « ; the confequence of which is, that the rays of the pen¬ cils will not be parallel after refledion from the fmall mirror, but converge fo as to meet in points'about Qj1’ Q^where they would form a larger upright image than PV, if the glafs R was not in their way ; and this image might be viewed by means of a Angle eye- glafs properly placed between the image and the eye : but then the field of view would be kfs, and confe¬ quently: Part ir. RefPtfling Telefcope. 2 75 Gregorian telefco^e. 276 It? magni- fying power. Part II. OPT Rrfle&ing quently not To pleafant; for which reafon, the glafs Telelcope. ^ jg retained, to enlarge the fcope or area of the 1 ' field. To find the magnifying power of this tclefcope, multiply the focal diftance of the great mirror by the diftance of the fmall mirror from the image next the eye, and multiply the focal diltance of the fmall mir¬ ror by the focal diftance of the eye glafs : then divide the produdl of the former multiplication by the pro- du£t of the latter, and the quotient will exprefs the magnifying power. One great advantage of the refle&ing telefcope is, that it will admit of an eye-glafs of a much fliovter focal diftance than a refra&ing telefcope will ; and confequently it will magnify fo much the more : for the rays are not coloured by refledfion from a concave mirror, if it be ground to a true figure, as they are by palling through a convex glafs, let it be ground ever fo true. The nearer an objedt is to the telefcope, the more its pencils of rays will diverge before they fall upon the great mirror, and therefore they will be the longer of meeting in points after refledlion ; fo that the firil image KH will be formed at a greater diftance from the large mirror, when the objedl is near the tele¬ fcope, than when it is very remote. But as this image mull be formed farther from the fmall mirror than its principal focus », this mirror mult be always fet at a greater diftance from the large one, in view¬ ing near objedts, than in viewing remote ones. And this is done by turning the fciew on the outfide of the tube, until the fmall mirror be fo adjufted, that the objedt (or rather its image) appears perfedt. In looking through any telefcope towards an ob- jedt, we never fee the objedt itfelf, but only that image of it which is formed next the eye in the tele- icope. For if a man holds his linger or a ftiek be¬ tween his bare eye and rn objtdk, it will hide part (if not the whole) of the objedt from his view : But if he ties a flick acrofs the mouth of a telcfcope be¬ fore the objedt-giafs, it will hide no part of the ima¬ ginary objedt he faw through the telefcope before, uulefs it covers the whole mouth of the tube : for all the eftedt will be, to make the objedt appear dimmer, becauie it intercepts part of the rays Whereas, if he puts only a piece of wire acrofs the in fide of the tube, between the eye-glafs and his eye, it will hide part of the objedt which he thinks he fees ; which proves, that he fees not the real objedt, but its image. This is alfo confirmed by means of the fmall mirror EF,. in the reflecting telefcope, which is made of opaque metal, and Hands diredily between the eye and the objedt towards which the telefcope is turned ; and will hide the whole objedt from the eye at O, if the two gkfles ZZ and SS arc taken out of the tube. Great improvements have been lately made in the con- ilruction of both relledting and refracting telefcopes, as well as in the method of applying thofe inftruments to the purpofes for which they are intended. Thefe, however, fall not properly under the fcience of optics, as fitter opportunities occur of giving a full account of them, as v eil as of the magic lantern, ca¬ mera ohfeura, See. under other articles of our multifa¬ rious woik. See Catoptrics, DioptricSj Speculum^ h C S- 357' and Telescope. We fhall conclude this article with Micro- fome obfervations feopesi and I elefcapes On the different Merits of Mlcrofcopes and Telefcopes, compared.^ compared with one another ; how far we may reafonably ' ' v depend on the Difoveries made by them, and what hopes we may entertain of further Improvements. The advantages arifing from the ufe of microfcopes j\fefpJof and telefcopes depend, in the firft place, upon their pro-microfcopes perty of magnifying the minute parts of objedis, foandtele- that they can by that means be more diftindbly viewed ^0P jS com’ by the eye ; and, feconclly, upon their throwing more* light into the pupil of the eye than what is done with¬ out them. The advantages arifing from the magnify¬ ing power would be extremely limited, if they were not alfo accompanied by the latter : for if the fame quan¬ tity of light is fpread over a large portion of furface, it becomes proportionably diminiihed in force ; and therefore the objedts, though magnified, appear pro- portionahly dim. 'Thus, though any magnifying glafs fhould enlarge the diameter of the object 10 times, and confequently magnify the furface 100 times, yet if the focal diftance of the glafs was about eight inches (pro¬ vided this was poftible), and its diameter only about the- fize of the pupil of the eye, the objedt would appear ico times more dim when we looked through the glafs, than when we beheld it with our naked eyes; and this, even on a fuppofition that the glafs tranfmitted all the light which fell upon it, which no glafs can do. But if the focal diftance of the glafs was only four inches, though its diameter remained as before, the inconveni¬ ence would be vaftly diminifhed, becaufe the glafs could then be placed twice as near the o! jedt as beiore, and confequently would receive four times as many rays as in the former cafe, and therefore we would fee it much brighter than before. Going on thus, ftill di* minifhing the focal diftance of the glafs, and keeping its diameter as large as poffible, we will perceive the objedt marc and more magnified, and at the fame time very diftindt and bright. It is evident, however, that- with regard to optical inftruments of the microfcopie kind, we.muft fooner or later arrive at a limit which cannot be palled. 1 his limit is formed by the follow- ing particulars. 1. The quantity of light loft in pafs- ing through the glafs. 2. The diminution of the glafs itfelf, by which it receives only a fmall quantity of rays. 3. The extreme'ftrortnefs of the focal diftance of great magnifiers, whereby the free accefs of the light to the ol jedt which we with to view is impe¬ ded, and confequently the refledtion of the light from ;t is weakened. 4. The aberrations of the rays, oc- cafioned by their different refrangibility. To under lb. tkI this more fully, as well as to fee hour far thefe obftacles can be removed, let us fuppofe the lens made of fuch a dull kind of glafs that it tranfmits only one half of the light which falls upon it. It is evident that fuch a glafs, of four inches focal diftance, and which magnifies the diameter of an objeit twice, Itiil fuppofing its own breadth equal to that of the pupil of the eye, will fhow it four times magnified in furface, but only half as bright as if it was feen by. the naked eye at the ufual diftance'; for the light ■ which falls upon the eye from the objedt at eight inches diftance, and likewife the furface of the oljedt in its natural 1 358 • OPT Micro- natural fize, being both reprefented by r, the furface Tel fS and t^ie niagn’fiec^ object will be 4, and the light which compared'. makes that magnified objeft vifible only 2 ; becaufe u—-vr—^ though the glafs receives four times as much light as the naked eye does at the ufual diftance of diftimSt vifion, yet one half is loft in palling through the glafs. The inconvenience in this refpecl can therefore be re¬ moved only as far as it is poffible to increafe the clear- nefs of the glafs, fo that it lhall tranfmit nearly all the rays which fall upon it; and how far this can be done, hath not yet been afeertained. The fecond obftacle to the perfection of microfcopic glaftes is the fmall lize of great magnifiers, by which, .notwithftanding their near approach to the object, they receive a fmaller quantity of rays than might be ex¬ pected. Thus, fuppofe a glafs of only Tloth ©f an inch focal diftance ; fuch a glafs would increafe the vifible diameter 80 times, and the furface 6400 times. If the breadth of the glafs could at the fame time be preferved as great as that of the pupil of the eye, which we fhall fuppofe -rV^hs of an inch, the object would appear magnified 6400 times, at the fame time that every part of it would be as bright as it appears to the naked eye. But if we fuppofe that this mag¬ nifying glafs is only of an inch in diameter, it will then only receive ^th of the light which otherwife would have fallen upon it; and therefore, inftead of communicating to the magnified ebjet a quantity of illumination equal to 6400, it would communicate on¬ ly one equal to 1600, and the magnified objeeft *ould appear four times as dim as it dees to the naked eye. This inconvenience, however, is ftill capable of being removed, not indeed by increafing the diameter of the lens, becaufe this muft be in proportion to its focal di- flance, but by throwing a greater quantity of light on the objeeft. Thus, in the above-mentioned example, if four times the quantity of light which naturally falls upon it could be thrown upon the ofcjedt, it is plain that the reflection from it would be four times as great as in the natural way ; and confequently the magnified image, at the fame time that it was as many times magnified as before, would be as bright as when feen by the naked eye. In tranfparent objefts this can be done very effectually by a concave fpeculum, as in the refleting microfcope already deferibed : but in opaque •objets the cafe is femewhat more doubtful; neither do the contrivances for viewing thefe objets feem entirely to make up for the deficiencies of the light from the fmallnefs of the lens and (hortnefs of the focus.— When a microfcopic lens magnifies the diameter of an objet 40 times, it hath then the utmoft poffible mag¬ nifying power, without diminiflung the natural bright- nefs of the objet. The third obftacle arifes from the fhortnefs of the focal diftance in large magnifiers: but in tranfparent objets, where a fufficient quantity of light is thrown on the objet from below, the inconvenience anfes at laft from ftraining the e\e, which muft be placed nearer the glafs than it can well bear ; and this1- en¬ tirely fuperledes the ufe of magnifiers beyond a certain ■degree. The fourth obftacle arifes from the different refran- igibility of the rays of light, and which frequently caufes Inch a deviation from truth in the appearancesof things, that many people have imagined thcmfelv.es to have I C S. Part II. made furprifing difeoveries, and have even publilhed Micro, them to the world ; wfien in fail they have been only ^0P®S a,1<* as many optical deceptions, owing to the unequal re- c^paied! fra&ions of the rays. For this there feems to be no ‘ v—-» remedy, except the introdiuftion of achromatic glaffes into microfcopes as well as telefcopes. How far this is prailicable, hath not yet been tried; but when thefe glafi'es fhall be introduced (if fuch introdudlion is pradlicable), microfcopes will then undoubtedly have received their ultimate degree of perfedion. 278 With regard to telefcopes, thofe of the refra&ing Doffiind’* kind have evidently the advantage of all others, where the aperture is equal, and the aberrations of the rays teiefCOpes are correded according to Mr Dollond’s method ; be- fupehor ts caufe the image is not enly more perfed, but a muchotfiers* greater quantity of light is tranfmitted than what can be refleded from the beft materials hitherto known. Unluckily, however, the imperfe&ions of the glafs fet a limit to thefc telefcopts, as hath already been ob- ferved, fo that they cannot be made above three feet and an half long. On the whole, therefore, the rt flec- tin-g telefcopes are preferable in this refped, that they may be made of dimenfions greatly fuperior; by which means they can both magnify to a greater degree, and at the fame time throw much more light into the eye. With regard to the powers of telefcopes, however, they are all of them exceedingly lefs than what we would be apt to imagine from the number of times which they magnify the objed. Thus, when we hear of a telefcope which magnifies 200 times, we are apt to imagine, that, on looking at any diftant ob¬ jed through it, we ftiould perceive it as dittindly as we would with our naked eye at the 200th part of the diftance. But this is by no means the cafe ; neither is there any theory capable of diretting us in this matter : we muft therefore depend entirely on ex¬ perience. The heft method of trying the goodnefs of any te¬ lefcope is by obferving how much farther off you are able to read with it than you can with the naked eye. But that all deception may be avoided, it is proper to choofe fomething to be read where the ima¬ gination cannot give any affiftance, fuch as a table of logarithms, or fomething which confifts entirely of fi¬ gures ; and hence the truly ufeful power of the tele- fc.ope is eaiily known. In this way Mr Short’s large telefcope, which magnifies the diameter of objeds 1200 times, is yet unable to afford fufficient light for read¬ ing at more than 200 times the diftance at which we can read with our naked eye. With regard to the form of refleding telefcopes, itTheGrego* is now pretty generally agreed, that when the Gre--rian tele- gorian ones are well conftruded, they have the advan- e tage of thofe of the Newtonian form. One advantage common evident at firft fight is, that with the Gregorian tele- ufe to the fcope an ©bjed is perceived by looking diredly through Newtonian, it, and confequently is found with much greater cafe than in the Newtonian telefcope, where we muft look into the fide. The unavoidable imperfedion of the fpe- cula common to both, alfo gives the Gregorian an ad¬ vantage over the Newtonian form. Notwithftanding the utmoft care and labour of the workmen, it is found impoffiLle to give the metals either a perfedtly fphe- rical or a perfedtly parabolical form. Hence arifes fosne Part II. O P ^ Micro fome Indiftin£lnef» of the-image formed by the great fcopesand {pecu]un^ which is frequently corrected by the little compared* one> provided they are properly matched. But if this u—v——'is not done, the error will be made much worfe ; and hence many of the Gregorian telefcopes are far infe¬ rior to the Newtonian ones; namely, when the fpecula have not been properly adapted to each, other. There is no method by which the workman can know the fpecula which will fit one another without a trial; and therefore there is a neceffity for having many fpecula ready made of each fort, that in fitting up a telefcope thofe may be chokn which bell fuit each other. The brightnefs of any obje£t feen through a tele¬ fcope, in comparifon with its brightnefs when feen by the naked eye, may in all cafes be eafily found by the following formula. Let n reprefent the natural di- flance of a vifible objedl, at which it can be diftindlly feen ; and let r/reprefent its diftance from the objedl- glafs of the inftrument. Let m be the magnifying power of the inftrument; that is, let the vifual angle fubtended at the eye by the objedt when at the di¬ ftance «, and viewed without the inftrument, be to the ICS. . 359 vifual angle produced by the inflrument as I to m. Micro- Let a be the diameter of the ohjecl-glafs, and p be ^c.°fer3 anc* that of the pupil. Let the inftrument be fo con- compared! ftrudted, that no parts of the pencils are interceptedi,—v —> for want of fufficient apertures of the intermediate glaffes. Laftly, let the light loft in reflettion or re- fradiion be negledled. The brightnefs of viiion thtough the inftrument will “'N 2 be exprefted by the fradlion —?J1 > the brightnefs of m p d natural vifion being I. But although this fradlion may exceed unity, the vifion through the inftrument will not be brighter than natural vifion. For, when this is the cafe, the pupil does not receive all the light tranfmitted through the inftrument. In microfcopes, n is the neareft limits of diftindl vifion, nearly 8 inches. But a difference in this cir- cumftance, arifing from a difference in the eye, makes no change in the formula, becaufe m changes in the fame proportion with n. In teiefcopes, n and d may be accounted equal, and' a} the formula becomes —-r. m p INDEX- ABERRATION, theory of, n°25i. Evils of—remedy, 252. Light diftributed by, over the fmalleft circle of dif- fufion, 253. Contrary aber¬ rations corredl each other, 255- ddam’s method of making glo¬ bules for large magnifiers, 110. Aerial fpeculums mentioned by Mr Gray, 47. Aerial ima¬ ges formed by concave mir¬ rors, 254. Aethers, fuppofed, do not folve the phenomena of inflection, &c. 67. Air, refradtive power of, 13, 14. Strongly refledts the rays proceeding from beneath the furface of water, 37. Alembert (M. d’), his difcove- ries concerning achromatic telefcopes, 17. Alhazen’s difcoveries concern¬ ing the refradtion of the at- mofphere, 6. His conjec¬ tures about the caufe of it, ib. He gave the firft hint of the magnifying power of glaffes, ib. ^/Z’tf/mefaltdiminifties the mean’ refr^dtion, but not the diL perfive power of glafs, 18. Angles, refracted tables of, pub* liftredby Kepler and Kircher, n0ii. Antonio de Dominis, hiftiop of Spalatro, difcovered the na¬ ture of the rainbow, 203. Apparent place of objeCts feen by reflection, firft difcovered by Kepler, 27. Barrow’s theory refpeCting, 210. M. delaHire’sobfervations,2i f- Berkeley’s hypothefis on di- ftancebyconfufedvifion, 213. ObjeCted to by Dr Smith, 2 14. The objection obviated by Robins, 215. M. Bou- guer adopts Barrow’s ma¬ xim, 216. Porterfield’s view of this fubjeCt, 217. Almofphere varies in its refrac¬ tive power at different times, 20. Illumination of the fha- dow of the earth by the re- fraCtion of the atmofphere, § 7> P-339. &c- Attratiive force fuppofed to be the caufe of reflection, 176. The fuppofition objected to, 177. Obviated, 178. An¬ other hypothefis, 179; Sir Ifaac Newton’s hypothefis, 180. Untenable, 181. Azout (Mr) makes an objeCt- glafsof an extraordinary focal length, 93. On the apertures of rcfraCling telefcopes, 96,. B. Bacon (Roger), his difcoveries, n° 6, 8. Bacon (Lord), his miftake con¬ cerning the poffibilityof ma¬ king images appear in the air, 26. Barker's (Dr) reflecting mi*- crofcope, 113. Barrow's theory refpeCting the apparent place of objects, 210. Adopted by Bbuguer, 216. Beams of light, the phenome¬ non of diverging, more fre¬ quent in fummerthan in win¬ ter, 241. Beaume (Mr) cannot fire in¬ flammable liquids with hot iron or a burning coal, un- lefs thofe fubftances be of a white heat, 45. Berkeley's theory of viiion, 72. His hypothefis concerning the apparent place of ob¬ jects, 213. ObjeCted to by Dr Smith, 214. The ob¬ jection obviated' by Mr Ro¬ bins, 2x5. Binocular telefcope invented by Father Rheita, 91. Black marble in fome cafes re¬ flects very powerfully, 36. Blair (Dr Robert) makes an important difcovery, 19*. Blair and Dollond’s reflect¬ ing telefcope fuperior to ali others, n° 278. Bodies which feem to touch one another are notin aCtual con¬ tact:, 46; Eight hundred pounds weight on every fquare inch neceffary to bring twobodies into apparent con¬ tact, 64. Bouguer's experiments to dif- cover the quantity of light loft by reflection, 33. His difcoveries concerning the reflection of glafs and po- liftied metal, 35. His ob- fervations concerning theap- parent place of objeCts, 2 16. Throws great light on the fubjeCt of fallacies of vifion, 220. Explains the pheno¬ mena of green and blue ftia- dows feen in the iky, 234,, 235. Contrivances for mea- furing light, 244. Calcula¬ tions concerning the light of the moon, 248. Boyle’s experiments concerning the light of differently co* loured fubftances, 28. Briggs's folution of Tingle vifion with two eyes, 1 59. Brilliant, the cut in diamonds produces total reflection*, 129, 360 Brijlle, curious appearance of the fhadow ef one, n° 56. Bujfon's experiments on the re- fledtion of light, 34. Obfer- ved green and blue fiiadows in the Iky, 231, 232. Burning-gUftts of the ancients defcribed, 23. C. Campari?s telefcope, 92. Candle, rays of light extended from, in feveral dire&ions, like the tails of comets, 51. Cat (M. le) explains the mag¬ nifying of objedls by the in¬ flexion of light, 68. Ac¬ counts for the large appear¬ ance of objects in mill, 212. Explains a remarkable decep¬ tion of vifxon, 225. Chejl (Mr) made the fame dif- covery with Dollond for the improvement of refradting telefcopes, 18. Clairaufs calculations refpedt- ing telefcopes, 17. Cold, why moll intenfe on the tops of mountains, 4^. Colours difeovered to arife from refradlion, 15. Suppofed by Dechales to arife from the inflexion of light, 50. Pro¬ duced by a mixture of fha- dows, 58. Colours Ample or compound, 196. Concave glaffes, 74. An objeX feen through a concave lens is feen nearer, fmaller, and lefs bright, than with the naked eye, 170. Law of refledlion from a concavefur- face,i83. Proved, 185. Con¬ cave mirrors, p. 344. Convex lens, an objeX feen thro’ appeal s brighter, lar¬ ger, and more diftant, than •when feen by the naked eye, nc 168. In certain circum- ilances it appears inverted and pendulous in the air, 169. Law of reflection from a convex furface, 1 84. Proved mathematically, » 85. Me¬ thod of finding the focal di- ftance of rays refieXed from a convex furface, 189. Con¬ vex mirrors, p. 344. of bodies in many cafes apparent without being real, 46. Eight hundred pounds on every fquare inch necef- fary to produceapparent eon- taX, 64. Real contaX of bodies perhaps never obfer- ved, 66. 249. OPT Corona, p. 327. Crxflal hath feme refraXive pro¬ perties different fiom other trnnfparent fubftances, nJ 39. Cylinders; experiments by Mi- raldi concerning their fha- dows, 54. D. Deception in vifion ; a remark¬ able one explained by M. 1c Cat, 225. Dechales’s obfervations on the infleXion of light, 50. Defcartes: his difeoveries con¬ cerning villon, 71. Account of theinventionof telefeopes, 75- Diamond, the brilliant cut in, producestotalrefleXion, 129. Dioptric inflruments: difficul¬ ties attending the cOnflrtic- tion of them, x 20 Tele¬ fcopes why made fo long, 95- Dljlance of objeXs, $ 3. p. 327, &c. Berkeley’s account of the judgment formed con¬ cerning diflance by confufed vifion, 213. Smith’s account 214. ObjeXed to by Ro¬ bin’s, 2! 5’. Bouguer adopts Barrow’s maxjm, 216. Por¬ terfield’s view of it, 217. Dlvini, a celebrated maket of telefcopes, 92. His rnicro- fcope, 107. Diverging beams more frequent in fummer than in winter, 241. Dollmd (Mr) difeovers a me¬ thod of correXing the errors arifing from refraXion, 17. He difeovers a miflake in one of Newton’sexperiments, ih. Difeovers the different refraXive anddifperfive pow¬ er of glafs, ib. Difficulties in the execution of his plan, p. 238. His improvements in the refraXing telefcope, nJ 99, 100. Dollond and Blair’s refraXing telefcope fuperior to ail others, 27*. Dominis (De) difeovered the caufe of the colours of the rainbow, 203. E. Edouards (Mr) improvements in the refleXing telefcope, 98. Emergent rays, the focus of, found, 144. Equatorial telefcope or portable obfervatory, 102. New one ivented by Ramfden, ib. I c s. Euler (Mr) firfl fuggefled the thought of improving re- fraXing telefcopes, n° »7. His controverfy with Ciai- raut, &c. ib. His fcheme for introducing vifion by re¬ fieXed light into the folar microfcope and magic lan¬ tern, 116, His theory of undulation contrary to faX, 136; and therefore mifleads artifts, 137. Eye : the denfity and refraXive powers of its humours fir ft afeertained by Scheiner, 70. Defcription of it, 147. Di- menlions of the infenlible fpot of it, 151. Eyes fei- dotn both equally goad, 2 17. Seat of vifion in, difpute a- bout, 150. Arguments for the retina being the feat of viiion in, 152. Eyes, Angle viAon with two, 158 Varioushypothefescon- cerning it, 159, 163, 161, &e. Brightnefs of objeXs greater when feen with two eyes than only with one, 163. When one eye is clo- fed, the pupil of the other is enlarged, 164. F. Fallacies, feveral, of viAon ex¬ plained, 219. Great light thrown on this fubjeX by M. Bonguer, 220. Focus, the, of rays refraXed by fpherical furfaces afeertain¬ ed, 141. Focus of parallel rays falling perpendicular upon any lens, 143. Focus of emergent rays found, 144. Proportional dillance of the focus of rays refieXed from a fpherical furface, 188. Me¬ thod of finding the focal di- ftance of rays rtfleXed from a convex furface, 189. Fontana claims the honour of inventing telefcopes, 79. Force, repulAve, fuppofed to be the caufe of refleXion, 174. The fuppofition objeXed to, 175. AttraXive, fuppofed, 176. The fuppolition ob¬ jeXed to, 177. The objeXion obviated, 178. Funk ( Baron Alexander), his obfervation concerning the light in mines, 47. G. Galilean telefcope, more diffi- Acult of conflmXion than others, 86. Index. Galileo made a telefcope with¬ out a pattern, n° 80. An ac¬ count of his difeoveries with it, 8x. Why called Lyn- ceus, 82. Account of his telefcqpes, 83. Was not ac- quainted with their ratio- « &c- Mairan (M.), his obfervations on the inflexion of light, 59* Maraldi’s difeovenes concern¬ ing the inflexion of light, 53> 54» 55* Further pm- fues Grimaldi’s and Sir I. Newton’s experiments, 56, 57. His experiments with a mixture of coloured fha- dows, 58. Martin’s (Mr) improvement of the fular microfcope, 117* Maurolycus, his difeoveries, 9> 69- Mazias (Abbe), attempts an explanation of the pheno¬ mena of green and blue fhadows feen in the fky, 233- Media, the various appearances of objeXs through different, ftated and inveftigated, 165. An ohjtX feen through a plane medium, appears 36* nearer and brighter than feen by the naked eye n° 167. Melville (Mr), his obfervations on the heating of bodies by light, 43. Difcovers that bodies which feem to touch are not in aXual contaX, 46. Explains a curious phe¬ nomenon of vifion, 226. Explains the phenomena of green and blue fhadows in the fky, 234. Mich ell’s (Mr), calculation of the light of the moon, 2 50. Microfcopes, theirLiftory, ic^. Made by Janfen, 106. By Divini, 107. By Hartfoc- ker, ic8. By Leeuwenhoek, it 9. By Wilfon, no. Adam’s method of making globules for large magnifiers, 111. Temporary micro¬ fcopes, by Mr Grey, 112. Dr Barker’s refleXing mi¬ crofcope, 1 13. Smith’s re¬ fit Xing microfcope fuperior to all others, 114. Solar microfcopes and that for opaque objeXs, 115. Mr Euler’s fcheme of introdu¬ cing vifion by rtflefted light into the folar microfcopc and magic lantern, ii6. Martin’s improvement, 117. Di Torre’s extraordinary magnifying microfcope, 1 18. Could not be ufed by Mr Baker, 119. Microfcope, compound ufe of feveral lenfes in, 260. Dr Smith’s, magnifying power of, 261. Eafy method of afeertaining themagnifyingpowerof,262. Further ohfervations on the magnifying power of, 263. Table of the magnify- ing powers of glafies ufed in, ib. Solar, magnify- ing power of, 264. Merits of, compared with the tele- fcope, 277. Mines better illuminated in cloudy than in clear wea¬ ther, 47. Mirrors, 2. p. 343, &c. Size of, in which a man may fee hiswholeirnag?,n°257. Why three or four images of ob¬ jeXs are feen in plane mir¬ rors, 2c8. Aerial images formed by concave mirrors, 2:9. Mifl, account of the largcnefs Z z o£ 362 of objefts In, by M. le Cat, nc 212. Moon, Maraldi’s rrnftake con¬ cerning the ihadowofit, 56. Why viiible when totally eclipfed, 242. Why the moon appears duller when eclipfed in her peiigee than in her apogre> 243. Great variation of the light of the moon at different altitudes 246. M. Bouguer’s calcula¬ tions concerning trie light of, 248. Dr Smith’s, 249. Mr Micheli’s, 250. Motion produced without im- pulfe, 6$, 66. Motion of light accelerated or retarded by refraction, 1 27. Multiplying glafs, $ f. p. 342, &c. Phenomena of, u0256. N. Ne-xuton (Sir I fane) liis difco- very concerning colours, 16. Miftaken in one of his expe¬ riments 18. His dif overies concerning the inflection of light, t2- Theory of refrac¬ tion ohjeCted to, 134. Thefe objections are the neceiTary confeqHences of the theory, and therefore confirm it, 135. Reflecting telefcope, 273. Magnifying power of, 274. laferior to Gregorian, 279. "Nollet (Abbe) cannot fire in¬ flammable liquids by burn¬ ing glafies, 44. O. Objefts on the retina of the eye appear inverted, 136. Why feen upright, 147. An ob¬ ject when viewed with both eyes does not appear double, becaufe the optic nerve is in.fenfible of light, 148. Pro¬ ved by experiments, 149, Seen with both eyes bright¬ er than when feen only with one, 163. The various ap¬ pearances of objeCts feen through different media fta- ted and inveftigated, 165. An objeCt fltuated in the horizon appears above its true plane, 166. An off- jeCt feen through a plane medium appears nearer and brighter than ften “by the naked eye, 167. ObjeCt feen through a convex lens ap¬ pears larger, brighter^ and more diftant, 168. In fome circumftances an objeCt thro’ a convex lens appears invert- O P T ed and pendulous in the air, 169. Barrow’s theory re- fpeCting the apparent place of objeCts, 2io, M. de la Hire’s obfervations, 211. M. le Cat’s account ef the larg nefs of objects in miit, 212. Why objects feen from a high building appear fnul- h r than they are, 2 t N.DrPor- terfitld’s account of objeCts appearing to move to a gid¬ dy perfon when they are both at reft, 221. Wells’s account, 222. Upon what data we judge vifible objects to be in motion or at red, 223. Experiments to afeer- tain it, 224. O^vd/ glafles, improved by Dol- lond, 17, and by Blair, 19. Obfervatory (Portable). See Equatorial Tclef cope. Opake objects, microlcope for, 1 [5* CPA-nerve infenfiblc of light ; and therefore an objeCt view¬ ed by both eyes is not feen double, 148. Proved by ex¬ periments, 149. Optical inftruments, Seel. iv. p. 342, &c. Optics (the firfl treatife of) by Claudius Ptolemasus, 4. Vi- tellio’s treatife, 7. Tieatife attributed to Euclid, 24. Definition of the theory of optics, p. 278. P. Parallel rays falling perpendi¬ cular upon any lens, the fo¬ cus of, found, n° 143. Parhelion, p. 327. Plane medium, an objeCt feen through appears nearer and brighter than by the naked eye, n° 167. Plane furfaces, laws of refrac¬ tion in, 140. An objeCt fU tuated in the horizon ap¬ pears above ita true plane, 1 65. Extent of the viiible horizon on, 227. Planets, more luminous at their edges than in the middle of their difks, 41, 247. Plates. Maraldi’s experiments concerning their lhadows, 57- Porta (Joannes Baptifte) his difeoveries, 10. Porterfield's folution of Angle vifion with two eyes, 160. Of the judging of the di- Itance of objeCts, 2x7, 218. I c s. Fallacies of vifion explain¬ ed, 218. Porterfield’s ac¬ count of ohjeCts appearing to move to a giddy perfon when they are both at reft, 221. Primary rainbow never greater than a femicircle, and whyr; 207. Its colours ftronger than thofe of the fecondarv, and ranged in contrary or¬ der, 209. Prifns in fome cafes reflect as llrongiy as quickfilver, 30. Why the image of the fun by heterogeneous rrvjs palling thro’a prifm is oblong, 197. Ptolemy firft treated of redac¬ tion feientifically, 4. R. Rainbow (knowledge of the na¬ ture of ) a modern difeovery, 201. App/oach towards it by Fletcher of Brellaw, 2C2. The difeovery of ma le by Antonio de Domittis bifnop ofSpalatro, 203. True caule of its colours, 204. Pheno¬ mena of the rainbow explain¬ ed on the principles of Sir I. Newton, 205. Two ram- bows feen at once, 206. Why the arc of the primary rain¬ bow is never greater than a femicircle, 207. The fecen- dary rainbow produced by two reflections and two re- fraCtions, 208. Why the co¬ lours of the fecondary rain¬ bow are fainter than thofe of the primary, and ranged in a contrary order, 209. Ramj.ten’s (Mr) new equatorial telefcope, 102. Rays of light extinguilhed at the furfaee of tranfparent bodies, 38. Why they feem to proceed from any lumi¬ nous objeCt when viewed with the eyes half Ihut, 51. Rays at a certain obliqui¬ ty are wholly reflected by tranfparent fubftances, 12S. The focus of rays refraCt- ed by fpherical furfaces af- certained, 141. The fo¬ cus of parallel rays falling perpendicularly upon any lens, 143. Emergent rays, the focus of, found, 144. Rays proceeding from one point and falling on a para¬ bolic concave furface are all reflected from one point, 187. Proportional diilance of the Index. focus of rays reflected from a fpherical furface, 188. Se¬ veral forts of coloured rays differently refrangible, 194. Why the image of the fun by heterogeneous rays paf- fing through a prifm is ob- long, 197. Every homoge. nial ray is refraded accord¬ ing to one and the fame lule, 200. RflehtedW’ft, table of its quan¬ tity from different fubftances, 40. Rflciting teltfcope of Newton, 273, Magnifying power of, 274. Improved by Dollond and Blair, fuperior to all o- thers, 278. Rtfettion of light, opinions of the ancients concerning it, 23. Bouguer’s experiments concerning the quantity of light loft by it, 33. Method of afeertaining the quantity loft in all the varieties of re¬ flection, ib. Buflon’s expe¬ riments on the fame fubject, 34. Bouguer’s difeoveries concerning the reflection of glafs, and of polifhed metal, 35. Great difference of the quantity of light reflected at different angles of incidence, 36. No reflection but at the furface of a medium, 43. Is not produced by impulfe, 65, 66. Rays at a certain obliquity are wholly reflec¬ ted by tranfparent fubllances, 128. Total reflection pro¬ duced by the brilliant cut in diamonds, 129. Some por¬ tion of light always reflec¬ ted from tranfpaicnt bodies, 171. Light is not reflected by impinging on the folk! parts of bodies at the firft furface, 172. nor at the fe- cond, 173. Fun jamental kw of reflection, 1 82. Laws of, from a concave furface, 1 83. From a convex, 1 84. Thefe preceding propoiltiona pro¬ ved mathematically, 185. Reflected rays from a fphe¬ rical furfacc never proceed from the fame point, 186. Rays proceeding from one point and failing on a para¬ bolic concave lurface are all reflected from one point, 187. Proportional diftance of the focus of rays reflected from a fpherical iurface, 188. Me¬ thod Index, thod of finding the focal di- {lance of rays rcflcdled from a convex furface, 189. The appearance of ohjtdls reflec¬ ted from plane furfaceSjiyo. from convex, 191, from concave, 192. The appa¬ rent magnitude of an objedf feen by refledtion from a concave furface, 193 Re- fiefted light difl'erently re¬ frangible, 193. Rcjraainz telefcopes improved by Mr Dollond, 17. By Dr Blair, 19. Magnify in proportion to their lengths, 271. Imperfedtions in, re¬ medied, 272. Refraft'ton, known to the an¬ cients, 2* Its law difeo- vered by Snellius, 1 r. Ex¬ plained by Defcartes, 12. Fallacy of his hypothefis, I Experiments of the Royal Society for deter¬ mining the refradHve powers of different iubftauces, ib. M. de la Hire’s experiments on the fame fubjedf, ib. Refrafiion of air accurately determined, 13, 14. Mi- ftake of the Academy of Sciences concerning the re- fradlion of air, 13. Al¬ lowance for re fraction in computing the height of mountains, firft thought of by Dr Hooke, 14. Mr Dollend difeovers how to corredl the errors of tele¬ fcopes arifing from refrac¬ tion, 17. The fame dif- covery made by Mr Chelt, 18. Important difeovery of Dr Blair for this purpole, 19. Refradlion defined, x 23. Phenomena of refraction folved by an attractive power in the medium, 125. Refraction explained and illullrated, pages 279, 280. Ratio of the fine of inci¬ dence to the fine of refrac¬ tion, n° 126. Refraction ac¬ celerates or retards the mo¬ tion of light, 127. Re¬ fraction diminiflies as the incident velocity increafes, 130. Refraftion of a ftar greater in the evening than in the morning, 131. Laws of refraction when light paf- fes out of one traufparent body into another contigu¬ ous to ity 133. The New- O P T Ionian theory of refra&ion objefted to, 134. Which objections, as they are the neceffary confequences of thattheory, confirm it, 135. Laws of refraClion in plane furfaces, 140. The focus of rays refraCted by fpheri- cal furfaces afeertained, 141. Light confitts of feVeral forts of coloured rays dif¬ ferently refrangible, 194. Reflected light differently refrangible, 195. Every homogeneal ray is refraCted according to one and the fame rule, 200. Reid’s foliation of Angle vifion with two eyes, 161. Repidjive force fuppofed to be the caufe of reflection, 174. Objected to, 175. Ano¬ ther hypothefis, 179. Sir Ifaac Newton’s, 180. Un¬ tenable, i8i» Retina of the eye, objeCts on, inverted, 146. Why feen upright, 147. When viewed with both eyes, not feen double becaufe the optic nerve is infenfible of light, 14S. Arguments for the retina's being the feat of vi¬ fion, 1 52 Rhelta’s telefcope improved by Huygens, 89. His bino¬ cular telefcope, 91. Robin’s (Mr) objection to Smith’s account of the appa¬ rent place of objeCts, 215. S Saturn’s ring difeovered by Galileo, 81. Secondary rainbow produced by two reflections and two re- fraCtions, 208. Its colours, why fainter than thofe of the primary, and ranged in Contrary order, 209. Stbeiner completes the difeove- ries concerning vifion, 70. puts the improvements of the telefcope by Kepler in practice, 88. Shadows of bodies, obferva- tions Concerning them, 48, 49, 52. Green flxadows obfevved by Buffon, 231. Blue ones, 232. Explain¬ ed by Abbe Mazeas, 233. Explained by Melville and Bouguer, 234. Curious ob- fervations x'dative to this fubjeCt, 235. Blue Jhadows not conffned to the morn- I G S. ings and evenings, 236. A- nolherkind oiJhadows, 237. Illumination of the Jhadow of the earth by the refrac¬ tion of the atmofphere, § 7. p. 339, &c. Short's (Mr) equatorial tek- fcope, 102. .SVWx-iightednefs, 155. Sky, concave figure of, § 4* p. 324. &c. Extent of the vifible horizon on a plane furface, n°2 2 7. Why a long row of objects appears cir¬ cular, 228. Why the con¬ cavity of the fky appears lefs than a femicircle, 229. Opinions of the ancients re- fpeCting the colour of the iky, 230. Green fliadows obferved by M. Buffon, 231. Blue ftudows obferved .by him, 232. The phenome¬ na explained by Abbe Ma¬ zeas, 233. By Melville and Bouguer, 234. Curious ob- fervations relative to this fubjeCt, 235. St?iifh’s ^Mr Caleb) propofal to fhorten telefcopes, 101. Smith’s (Dr) reflecting micro- fcope fuperior to all others, x 14. Account of the appa¬ rent place of objeits, 214. ObjeCted to, 215. Con¬ verging irradiations of the fun obferved and explained by, 238, 239. He never obferved them by moon- light, 24c. Diverging beams more frequent in fummer than in winter, 241. Cal¬ culation concerning the light of the moon, 249. His microfcope magnifyingpow- er of, 261. Solar microfcope, 115. Mr Euler’s attempt to intro¬ duce vifion by reflected light into the folar microfcope, 116. Martin’s improvement, 117. Magnifying power of, 264. Speftacles, when flrit invented, 73- Spots of the fun difeovered by Galileo, 81. Not feen un¬ der fo imall an angle as lines, CS7- Stars, twinkling of, explained by Mr Michell, 21. By Mufchenbroek, 22. By o- ther philofophers, ib. A mo¬ mentary change of colour obfervable in iome ftars, ib. Z z 2 3C3 Why vifible by day at the bottom of a well, 32. How to be obferved in the day¬ time, 103. The refraCtion of a flar greater in the evening than in the morn- ing, 131. Sun, image of, by heteroge¬ neous rays pafling through a prifm, why oblong, 197. The image of, by fimple and homogeneous light, circu¬ lar, 198. Variation of light in different parts of the fun’s difk, 247. Surfaces of tranfparent bodies have the property of ex- tinguifixing light, and why, 38. Suppofed to confilt of fmall tranfparent planes, 40, 41, 42. Laws of refrac¬ tion in plane furfaces, 140. The focus of rays refraCted by fpherical furfaces afeer¬ tained, 141. Reflected rays from a fpherical furface ne¬ ver proceed from the fame point, x8(j. The appear¬ ance of objeCts from plane furfaces, 190. From con- 1 vex, 191. From concave, 192. The apparent mag. nitude of an object feen by reflection from a concave furface, 193. Telefcopes, different compofi- tions of glafs for correcting the faults of the refracting ones, 18. Dcfcartes’s ac¬ count of the invention of them, 75. Other accounts, 76. Borellus’s account pro¬ bably the true one, 77. The firff one exceeding good, 78. Fontana claims the honour of the invention, 79. Galileo made one without a pattem, 80. His difeoveries on this head, 8 f. From which he acquired the name of Lyn~ ecus, 82. Account of his telefcopes, 83. Rationale of the telefcope firft difeo¬ vered by Kepler, 84. Reafon of the effeCts of tekfeopes, 85. Galilean tekfeope dif¬ ficult of conffmetion, 86. Tekfeopes improved by Kepler, 87. His method firff praClifed by Scheiner, 88. Huygens improves the telefcopes of Scheiner and Rheita, 89. Vifion molt diftinCt in the Galilean ones, 90. 364- gc. Rhefta’s binocular te- lefcope, n0 9 £. Telefcopes of Campani and Divini, 92. Azout makes a telefcope of an extraordinary focallength, 93. Telefcopes ufed with¬ out tubes, 94. Dioptric tekfcopes why fo long, 95. On the apertures of refrac¬ ting telefcopes, 96. Hifto- ry of the refledling tele¬ fcope, 97. Mr Edward’s improvements in it, 98. Elerfchers improvements, 99. MrDollond’s improvements, ico. Mr Smith’s propoful to fhorten telefcope?, 101. The equatorial ttlefcope, 102. How to obferve liars in the day-time, 103. Mr Epinus’s propofal for bend¬ ing the tubes of telefcopes, 104. Telefcope, agrono¬ mical, 265. Magnifying power of, 266. Inverts ob¬ jects, 267. Common refrac¬ ting, Ihowsobjeftsereft, 268. Galilean teiefcope, 269. Magnifying power of, 270. Refra&ing, magnify in pro¬ portion to their length, 271. Their imperfe&ions reme- O P T died, n° 272. Reflecting te¬ lefcope of Newton, 273. Magnifying power of, 274. Gregorian telefcope, 279. Magnifying power of, 276. Merits of, compared with microfcope, 277. Refrac¬ ting telefcopes improved by Dnilond and Blair, fuperior to all others, 278. Grego¬ rian telefcope fuperior for common ufes to the New¬ tonian, 279. Thin plates ; Mr Boyle’s ac¬ count of the colours obfer- vable in them, 30. Dr Hooke’s account, 31. Trjrre (F. di), extraordinary magnifying microfcope, 118. Tour (M. de), his obfervations on the inflexion of light, 60. The hypothefis by which he accounted for the phenomena, 61. Unfatis- fadtory and ill-founded, 62. Transparent bodies, a portion of light always refleited from, 171. V. Variation of the intenflty of at¬ traction and repulfion un¬ known, 138. The law of I c s. variation in the a&ion of many particles different from that of one ; hut may be known if it be known, 139. Variation of the light of the moon at different altitudes, 246. In different parts of the difks of the fun and pla¬ nets, 247. Vif ble objects how judged to be in motion or at reft, 223. Curious experiments to af- certain it, 224. Vifrble ho¬ rizon on a plane furface, ex¬ tent of, 2:7. Vifion: its nature firft difeo- vered by Maurolycus, 9. Difcoveries concerning it, p.264, &c. Seat of, difpute about, 150. Dimenfions of the fpot in the eye where there is no vifion, 151. Ar¬ guments for the retina’s be¬ ing the feat of vifion, 152. Vifion bright and obfeure, 153. Diflindt at different diliances, 154. Leaft angle of vilion, 156, Of frngle vi¬ fion with two 'eyes, 158. Briggs's folution, 159. Por¬ terfield’s, 1' o Reid’s, i6r. Wells’s, 162. Vifion more Index, difllndt in homogeneal than heterogeneous light, n°igg. Several fallacies of vifion ex¬ plained, 219. Great light thrown on this fubjeeb by M. Bouguer, 220. -Y re¬ markable deception explain¬ ed by M. leCat, 225. Cu¬ rious phenomenon explained by Mr Melville, 226. I'itellio's difeeveries, 7. ,U- Undulation, Euler’s theory of, contrary to fad, 136; and mifleads artifls, 137. W. Water in feme cafes refledts more powerfully than quick- filver, 36. Table of the quantity of light reflected from it at different angles, p. 249. Remarkably ftrong reflection into it from air, n°37- Wells's folution cf fingle vifion with t*o eyes, 162. Ac¬ counts for objects appearing to move to a. giddy perfon when at reft, 222. White bodies reflect more than others, 28. JVHjons microlcope, 110. OPT O P U Optimate?, OPTIMATES, one of the divifions of the Ro- Optio man people oppofed to populares. It is not eafy to v“— v1 'afeertain the charadteriltic differences betwixt thtfe two parties. Some fry the cptimates were warm fup- porters of the dignity of the chief magiftrate, and promoters of the grandeur of the ftate, who cared not if the inferior members fuffered, provided the commanding powers were advanced : Whereas the po- pulares boldly flood up for the rights of the people, pleaded for larger privileges, and:laboured to bring matters nearer to a level. In fhort, they refembled, according to this account, the court and country par¬ ties amongft the people of this ifland. Tully fays, that the optirnates were the belt citi¬ zens, who wifhed to defirve the approbation of the better fort; and that the populares courted the favour of the populace, not fo much confidcring what was right, as what would pleafe the people and gratify their own thirft of vain glory and empty applaufe. OPTIO, an officer in the Roman army, being an affiftant or lieutenant to every centurion. The optio was is> called becaufe he was the choice or option of the centurion in later times; at firft, however, he had been chofen by the tribune, or chief commander of the legion. Mhefe optiones are alfo fometimes called fucctnluriones and tergiduftores ; the lafl name was given them becaufe their poll was in the rear of the com¬ pany. Some authors make mention offub-optioms or fub-lieutenants. It is proper however to add, that optiones were Opbon, not peculiar to the camp, but were alfo ufed in a va- Opuntia, riety of other offices of life. ‘ v OPTION, the power or faculty of wifliing, or choofing-; or the choice a perfon makes of any thing. When a new fuffrrg m bifhop is confecrated, the archbifhop of the province, by a cuftomary preroga¬ tive, claims the collation of the firft: vacant benefice, or dignity, in that fee, according as he (hall ehoofe ; which choice is called the archbifhop’s option. But in cafe the bifhop dies, or is tranflated, before the piefent incumbent of the promotion chofen by the archbifhop (hall die or be removed, it is generally fuppofed that the option is void ; inafmuch as the granter, fingly and by himfelf, could not convey any right or title beyond the term of his continuance in that fee. And if the archbifhop dies before the avoid¬ ance ftnll happen, the right of filling up the vacancy fhall go to his executors or adminiftrators. OPUNTIA, a fpecies of caflus; fee Cactus. The fruit of the opuntia is remarkable for colouring the juices of living animals, though it appears not to be poifonous or even hurtful to the body. In a letter from Charleftown in South Carolina, which was pub- liihed in the 5Cth volume of the Philofophical Tranf- aftions, the author writes thus:—“ As you defired, I tried the effects of the prickly pear in clearing the urine. A few days after your letter, 1 went down to one of the iftands, and gathered fome of the fruit, and 4 ORA [ and gave four of the pears to a child of three years of age, and fix pears to one of five. 1 he next morning 1 examined the urine of both, and it appeared of a very lively red colour, as if tart-wine had been mixed with water. I gave likewife fix pears to a negro- wench, who was fuckling an infant, and tlndlly for¬ bade her to put the child to her breaft for fix or eight hours; and then taking fome of her milk in a tea¬ cup, and fetting it by tor fome hours, the cream had a reddifh luftre, though it was very faint.” From the fame letter we learn, that the prickly pear grows in great abundance about Carolina ; and rdfo that the cochineal infetls are found upon it, though no at¬ tempt, that we know of, has hitherto been made to cure them for ufe as the Spaniards do. OR, the French word for gold, by which this me¬ tal is exprefted in heraldry. In engraving it.is deno¬ ted by fmall points all over the field or bearing. It may be fuppofed to fignity of itfelf, generojity, fplen- dor, or fohdity ; according to G. Leigh, if it is com¬ pounded with Gul. 1 f Courage. Azu. I ^ I Truft. Yor. ^ \ Joy. Pur. | 1 Charity. Sab. J “ [Conftancy. ORA, in antiquity, was a term equivalent to an ounce ; but it lias been much debated among our an¬ tiquaries, whether the ora, the mention of which fo often occurs, was a coin, or only money of account. Dr Hickes obferves, that the mode of reckoning money by marks and oras was never known in Eng¬ land till after the DaniOa fettlements; and by ex¬ amining the old nummulary effimates among the prin¬ cipal Gothic Hates upon the Babic, it appears, that the ora and folidus were fynonymous terms, and that the ora was the eighth part of the mark. From feve- ral of the Danifh laws, it likewife appears, that the Danifh ora, derived by corruption from aureus, was the fame as the Frank fohdus of twelve pence. As a weight the ora was regarded as the uncia or unit, by which the Danifh mark was divided ; and in Doomfday-book the ora is ufed for the ounce, or the twelfth part of the nummulary Saxon pound, and the fifteenth of the commercial : as a coin, it was an au¬ reus, or the Frank folidus of twelve pence. And from the accidental coincidence of the I'rank aureus with the eighth part of their mark, the Danes pio- bably took occafion to give it the new name of era. There was anothfr ora mentioned in the rolls of the 27th of Henry III. the value of which was iixtecn pence; and this was probably derived from the half manens of the Saxons. Such, in all appearance, was the original of thefe two oras; as there were no aurei of that period, to which thefe two denominations of money of fixteen and twelve pence can poffibly be aferibed. It is observed farther, that the name^v? diftinguifhes the gold coins in feveral paits ol .cvu- repe to this day. The Portuguefe moidore is.nothing tile hut moeda d'oro, from the Latin rnoneta de auro ; the French Louis dyores come from the fame ufe of the word, and owe their appellation to the ora. See Clarke on Coins. ORACH. See Atriplex. Wild Ozach. See Chenopodium. ORACLE, among the heathens, was the anfwer 5 ] ORA which the cede were Oppofed to give to thofe who confulted them upon any affair of importance. It is alfo uled for the god-who was thought to give the an- fvver, and for the place where it was given. The credit of oracles was fo great, that in all douVt and difputes their determinations were held iacred and inviolable : whence valt numbers flocked to them for advice about the management of their affairs ; and no bufinefs of any confequence was undertaken, fearce any peace concluded, any war waged, or any new form of government inflituted, without the advice and aoprobatiqn of fome oracle. The anfwers were ufually given by the intervcntioTi of the pried or priedefs ot the god who was confulted ; and generally expreffed in fuch daik and unintelligible phrafes, as might be eafily wreded to prove the truth of the oracle what¬ ever was the event. It is not, therefore, to be won¬ dered at, that the prieds who delivered them were in the highed credit and edeem, and that they managed this reputation fo as greatly to promote their own particular advantage. 1 hey accordingly allowed no man to confult the gods, before he had offered coffly facrifices, and made rich prefents to them. And to keep up the veneration for their oracles, and to pre¬ vent their bring taken unprepared, they admitted per- fons to confuit the gods only at certain dated titiKS , and fometimes they were fo cautious, that the great- ed perfonages could obtain no anfwer at all. Thus Alexander himfelt was peremptorily denied by the Pythia, or prieftefs of Apollo, till die was by down¬ right force obliged to afeend the tripos; when, being unable to refill any longer, fhe cried out,. Thou art invincible: and thefe words were accepted indead ot a farther oracle. Of the ambiguity of oracles, the following, out ot a great many examples, may be mentioned. Crcefu* having received from the Pythonefs this anfwer, That by palling the river Halys, he would dedroy a great empire ; he underftood it to be the empire of his ene¬ my, whereas he dedroyed his own. — The oracle con¬ futed by Pyrrhus gave him an anfvver, which might be equally underdood of the viftory of Pyrrhus, and the victory of the Romms his enemies : ylio te, JEacida, Romanos vinrere pojje. The equivocation lies in the condruftion o^the La¬ tin tongue, which cannot be rendered m Enghlh —— The Pythonefs advifed Croefus to guard againd the mule. 1 he king of Lydia underdood nothing of the oracle, which denoted Cyrus delcended from two dif¬ ferent nations; from the Medes, by Mandana his mo¬ ther, the daughter of Adyages; and from the Perfians, by his father Cambyfes, whofe ra-e was by far iefs grand and illudrious —Nero had for anfwer, from the oracle of Delphos, that feventy-three might prove fa¬ tal to him. He believed he was fafe from ail danger till that age ; but, finding him tel f deferted by every one, and hearing Galba proclaimed emperor, who was 73 years of age, he was iemible ol the deceit of the oracle. When men began to be better inilrudled by the lights philofophy had introduced into the world, the falfe oracles inienfibly loll their credit. Chrylippus filled an entire volume with ialle or doubtful oracles. Oenomaus, to be revenged ol fome oracle that had deceived him, made a compilation of oracles, to Ihow theiy Oracle. O R their ridiculous vanity, .,»» prcicrvea lomc fragments of this criticifm on oracles by Oenomaus. ‘‘ I might (fays Origen) have recourfe to the autho¬ rity of Arillotle and the Peripatetics, to make the Pythonefs much fufpe&ed ; I might extraft from the writings of Epicurus and his fedators an abun¬ dance of things to difcredit oracles; and I might /how that the Greeks themfelves made no great account of them.,, I he reputation of oracles was greatly leffened when they became an artifice of politics. Themiftocles, with a defign of engaging the Athenians to quit Athens, and to embark, in order to be in a better condition to refill Xerxes, made the*'Pythonefs deliver an oracle, commanding them to take refuge in wooden wads. Demofthenes faid, that the Pythonefs Philip, pijed; to fignify that Ihe was gained over by Philip’s prefents., 1 The celfation of oracles is attefted by feveral pro¬ fane authors ; as Strabo, Juvenal, Lucan, and others. Plutarch accounts for it, by faying, that the bene¬ fits ol the gods are not eternal as themfelves are; o ^ mtuiicivcs are or that the genii, who prefided over oracles, are fub- jed to death ; or that the exhalations of the earth had been exhaulted. It appears that the laft reafon had been alleged in the time of Cicero, who ridicules it m his fecond book of Divination, as if the fpirit of prophecy, fuppofed to be excited bv fubterraneous ef¬ fluvia, had evaporated by length of time, as wine or pickle by being long kept. Suidas, Nicephorus, and Cedrenus, relate, that Auguftus, having confulted the oracle of Delphos could obtain no other anfvver but this : “ The* He¬ brew child whom all the gods obey, drives me hence' and fends me back to hell: get out of this temple without ipcakmg one word.” Suidas adds, that Au- guuus deuicated an altar in the Capitol, with this in- tcription, “ To the eldeft Son of God.” Notwith- ib.ndmg thefe teftimonies, the anfwer of the oracle ot Delphos to Auguftus feems very fufpicious. Ce¬ drenus cites Eufebius for this oracle, which is not now found in his works ; and Auguftus’s peregri- uation iqto Greece was 18 years before the birth of C . rift. . and Cedrenus give an account alfo of an an¬ cient oracle dehveud toThuiis, a king of Egypt, which they fay is well authenticated. The king havin’^ con¬ sulted the oiacle of Serapis, to knovy if there ever was, or would be, one fo great as himfelf, received this anfwer: “ Firft, God, next the Word, and the Spi¬ rit with them. They are equally eternal, and make but one, whofe power will never end. But thou, mor¬ tal, go hence, and think that the end of the life of man as uncertain.” Van Dale, in his treatife of oracles, does not be¬ lieve that they ceafed at the coming of Chrift. He relates itveral examples of oracles confulted till the death of Theodofius the Great. He quotes the laws o the emperors I heodofias, Gratian, and Valentinian, again c thole who confulted oracles, as a certain proof that the fuperftition of oracles ftill fubfifted in the time ot thole emperors. According to others, the opinion of thofe who be- ,eve that dsmons had no Ihare in the oracles, and that the coming of the Mefliah made a, change in A [ 366 1 Ora Enfebins has preferred feme them, and the contrary opin.on of thofe who pretend 8r.de. that the incarnation of the Word impofed a general' lilence on all oracles, fhould be equally rejeAed '1’hev allege, that two forts of oracles ought to be diili/ gudhed : the one didated by the fpirits of darknefs who deceived men by their obfeure and doubtful an' n 5 °thfr'. the Purc and cheat of the pnetts of falfe divinities As to the oracles given out y demons, the reign of Satan was deftroyed by the coming of the Saviour; truth (hut the mouth of lies; out Satan continued his old craft among idolaters! Ail the devils were not forced to filence at the fame time by the coming of the Meffiah ; it was on parti- cular occafions that the truth of Chriftianity, and the vntue oi Chnftians, impofed filence on the devils St Athanafius tells the Pagans, that they have been wit- nefles thenifelves that the iign of the crofs puts the devils to flight, filences oracles, and diflipates enchant¬ ments. I his power of filencing oracles, and putting- the devils to flight, is alfo attefted by Arnobius, Lac- tantms, Prudentius, Minutius Felix, and feveral others. T,, 18 a 5ertain Proof that the coming of the Melliah had nnf o i ^ the Meffiah had not impofed a general filence on ora¬ cles. Plutarch relates, that the pilot Thamus heard a voice in the air, crying out, “ The great Pan ia dead ; whereupon Eufebius obferves, that che ac¬ counts of the death of the demons were frequent in t .e reign of 1 iberius, when Chrift drove out the wic¬ ked fpirits. The fame judgment, it is faid, may be pafled on oracles as on pojjejjions. It was on particular oeca- iions by the divine permiffion, that the Chriftians call out devils, or fileneed oracles, in the prefence, and even by the cosfeffion, of the Pagans themfelves. And thus it is we fiioald, it feems, underftand the paflhges of StJerom, Eufebius, Cyril, Theodoret, Prudentius, and other authors, who faid that the coming ofChriit had impofed filence on the oracles. As to the fecond fort of oracles, which were pure artifices and cheats of the priefts of falfe divinities, and which probably exceeded the number of thofe that immediately proceeded from daemons, they did not ceafe till idolatry was abolffhed, though they had loft their credit for a confiderablc time before the coming of Chrift. It was concerning this more com¬ mon and general fort of oracles that Minutius Felix faid, they began to difeontinue their refponfes ac¬ cording as men began to be more polite. But, how¬ ever oracles were decried, impoftors always found uupes, the grofteft cheats having never failed. ^ Daniel difeovered the impoiture of the priefts of Bel, who had a private way of getting into the temple to take away the offered meats, and who made the king believe that the idol confumed them. Mundus being in love with Paulina, the eldeft of the priefteflea of Ifis, went and told her, that the god Anubis, be¬ ing pafhonately fond of her, commanded her to give him a meeting. She ovas afterwards (hut up in a dark room, where her lover Mundus, whom flic be¬ lieved to be the god Anubis, was concealed. This impofture having been difeovered, Tiberius ordered t‘ ofc deteftable priefts and prieftefTes to be crucified, and with them Idea, Mundus’s free-woman, who had conduced the whole intrigue. He alfo commanded 3 the Oracle. ORA [ 367 3 ORA the temple of IGs to be levelled with the grotind, and her ftatue to be thrown into the Tiber; and, as to Mundus, he contented himfeif with fending him into baniihment. Theophilus, biihop of Alexandria, not only de- ftroyed the temples of the falfe gods, but difcovered the cheats of the prieds, by fhowing that the ftatues, feme of which were of brafs, and others of wood, were hollow within, and led into dark paffages made in the wall. JLucian, in difcOvering the impoflures of the falfe prophet Alexander, fays, that the oracles were chiefly afraid of the fuhtilties of the Epicureans and Chrifti- *ms. The falfe prophet Alexander fometimes feigned himfeif feized with a divine fury, and by means of the herb fopewort, which he chewed, frothed at the mouth in fo extraordinary a manner, that the ignorant people attributed it to the ilrength of the god he was pof- feiled by. He had long before prepared a head of a dragon made of linen, which opened and fhut its mouth by means of a hoi fe-hair. He went by night to a place where the foundations of a temple were digging ; and having found water, either of a fpring, or rain that had fettled there, he hid in it a goofe- egg, in which he had inclofed a little ferpent that had been juft hatched. The next day, very early in the morning, he came quite naked into the ftreet, having only a fcarf about his middle, holding in his hand a feythe, and lofting about his hair as the priefts of Cy- bele; then getting a-top of a high altar, he fard that the place was happy to be honoured by the birth of a god. - Afterwards, running down to the place where he had hid the goofe-egg, and going into the water, he began to fing the praifes of Apollo and .dLfcula- pius, and to invite the latter to come and fhow himfeif to men. With thefe words, he dips a bowl into the water, and takes out a myftsrious egg, which had a god inci&fed in it ; and when he had it in his hand, he began to fay that he held iEfculapius. Whilft all were eager to have a fight of this fine myftery, he broke the egg, and the little ferpent ftarting out, twifted itfelf about his fingers. Thefe examples fhow clearly, that both Chriftians and Pagans were f© far agreed as to treat the greater number of oracles as purely human impoftures.—That, in fa&, all of them were fo, will be concluded by thofe who give equal credit to daemoniacal infpiration, and demoniacal p jfejfion. The moft ancient cracle was that of Dodona (fee Dodona) ; but the moft famous was that of Delphi, to which article we alfo refer for further particulars on this fubjedt, fo famous in Pagan antiquity. Another celebrated one was the oracle of Trophonius, in the neighbourhood of Leba* dia, a city of Boeotia, which was held in high tftima- tion. It received its name fromTrophonius, brother of Agamedes, who lived in a fubtenaneous dwelling near iLebadia, and pretended to the faculty of foretelling future events. He died in his cave, and was deified as an oracular god. This oracle owed its reputation to one Saon. Thofe who repaired to this cave for information, were required to ofl’er certain facrifices, to anoint themfelves with oil, and to bathe in a certain river : They were then clothed in a linen robe, took a ho. neyed cake in their hands, and defeended into the fub- terraneous chamber by a narrow paflage. Here it was that futurity was unfolded to them, either by vifions or extraordinary founds. The return from the cave was by the fame paflage, but the perfons confulting were obliged to walk backwards. They generally came out aftoniftied, melancholy, and dejedted ; hence the proverb, The priefts oa their return placed them on an elevated feat, called the feat cf Mnemofyne, where an account was taken of what they had feen and heard. They were then condudted to the chapel of good Genius by their com¬ panions, where, by degrees, they recovered their ufual compofure and cheerfulnefs. Befides thefe three principal oracles of Greece, it is proper to take notice of that of Amphiaraus at Gro¬ pius in Attica. It was fo called from Amphiaraus, the fon of Oicleus, a man {killed in magic, the inter¬ pretation of dreams, &c. and who after his death was deified and delivered oracles in a temple eredfed to his divinity. (See Amphiaraus.) They who ap¬ plied to him for information, were to purify them¬ felves, offer facrifice, fall twenty-four hours, abftain from wine two days, and make an offering of a ram to Amphiaraus ; on the fkin of which they were to fleep, and fee their deftiny in a dream. Near the temple was Amphiaraus’s fountain, which was facred, and the waters ©f it forbidden to be ufed for ordinary pur- pofes. At Delos alfo there was an oracle of the Delian Apollo : in Milefia was that of the Branchidse, with others of lefs note, which require not a particular de- feription, fuch as that of the camps at Lacedaemon, that of Nabarcha, that of Chryfopolis, that of Claros in Ionia, that of Mallos, that of Patarea, that of Pella, that of Phafellides, that of Sinope, that of Orpheus’s head, &c. Though the Romans confulted the Grecian oracles upon many occafions, and had few oracles in their own country ; yet we mull not omit mentioning the Cu- msean oracles, which were delivered by the Sibyl of Cu¬ mae. For an account of the Sibyls, fee the article Sibyl. See alfo Daemon and Demoniac. We have hitherto only confidered the oracles of falfe gods, of which there was a far greater number than our limits permit us to obferve, and before either Greeks or Romr.ns had rifen to any diftinbtion. Ora¬ cle is in facred hiftory fometimes ufed for the mercy- feat, or the cover of the ark of the covenant; and by others it is taken for the funbluary, or for the moil holy place, wherein the ark was depofited. Among the Jews we may diftinguiftt feveral forts of real oracles. They had firft oracles that were delivered viva voce; as when God fpake to Mofes face to face, and as one friend fpcaks to another, (Numb. xii. 8.) Secondly, Prophetical dreams fent by God ; as the dreams which God fent to Jofeph, and which foretold his future greatnefs, (Gen. xxxvii. 5, 6.) Thirdly, Vifions; as when a prophet in an ecttafy, being nei¬ ther properly afleep nor awake, had fupernatural reve¬ lations, (Gen. xv. i.xlvi. 2.) Fourthly, The oracle of Urim and Thummim, which was accompanied with the ephod or the pebloralworn by the high-prieft, and which God had endued with the gift of foretelling things Oracle. ORA I 368 1 ORA Oracle. , things to come, (Numb, xii 6. JoeHi. 28.) This Chrlft and his ^ofpel became known to mankind? And Ofxa ^ manner of inquiring of the Lord was often made ufe that they did fo, Is moft certain from the concurrent II of, from Jofhua’s time to the ere&ion of the temple teflimonies of the fathers, which, who ever would tn- 0ranS,:- at Jerufalem. Fifthly, After the building of the deavour to Invalidate, may equally give up the moft re-' v temple, they generally confulted the prophets, who fpedable traditions and relations of every kind, were frequent in the kingdoms of Judah and Ifrael. idly. But did not Julian, the apoftate, confult From Haggai, Zechanah, and Malachi, who are the thefe oracles ? we anfvver in the negative : he had in- M of the prophets that have any of their writings deed recourfe to magical operations, but it was remaining, the Jews pretend that God gave them what becaufe oracles had already ceafed ; for he bewailed they call Bathcol, the daughter of the voice, which was the lofs of them, and affigned pitiful reafons for a fupernatural manifeflation of the will of God, which it ; which St Cyril!'has viroroufiy refuted, adding was performed either by a ftrong inflation or inter- that he never could have offered fuch, but from an un. ral voice, or elfe by a fenfible and exter nal voice, ‘wdlingnefs to achioivledge, that when the world had re- which was heard by a number of perfons fufficient to eeived the light of Chrijl, the dominion of the devil wat bear teftimony of it. For example, fiich was the voice at an end. that was heard at the baptifra of Jcfus Chrift, faying, . ^dly. The Chriftian emperors do indeed feem to This is my beloved fon, &c. (Matth. iii. .7.) condemn the fuperftition and idolatry of thofe who The fcripture affords us examples Hkewife of pro- were kill for confulting oracles ; but the edifts of thofe fane oracles. Balaam, at the inftigation of his own princes do not prove that oracles a&ually exifled in fpirit, and urged on by his avarice, fearing to lofe the their times, any more than that they ceafed in confe- recompenfe that he was promifed by Balak king of quence of their laws. It is certain that they were for the Moabites, fuggefts a diabolical expedient to this the moft part excind before the converfion of Con- «. prince, of making the Ifraelites fall into idolatry and fhntine. fornication (Numb, xxiv.^ 14. xxxi. 16.), by which he c^thly, Some Epicureans might make a je/l of this fu- nffures him of a certain vidory, or at leaft of confrder- perjliiion : however the Epicurean philofopher Celfus, able advantage againft the people of God. in the fecond century of the church,was for crying up* Micaiah the fon of Imlah, a prophet of the Lord, the excellency of feveral oracles, as appears at lar-e fays (1 Kings xxu. 21, &c.), that he faw the A\- from Origen’s feventh book againft him. ° mighty fitting upon his throne, and all the hoft of ORjEA, certain folemn facrifices of fruits which heaven round about him ; and the Lord faid, Who were offered in the four feafons of the year, in order fhall tempt Ahab king of Ifrael, that he may go to to obtain mild and temperate weather. They were war with Ramoth-gilead, and fall in the battle ? One offered to the goddeffes who prefided over the feafons, anfwered after, one manner, and another in another, who attended upon the fun, and who received' divine At the fame time an evil fpirit prefented himfelf be- worfhip at Athens. fore the Lord and faid,^ I will feduce him. And the ORAL, fomething delivered by word of mouth. Lord afked him, How? Ip which Satan anfwered, I without being committed to writing; in which fenfe will go and be a lying fpirit in the mouth of his pro- we fay oral law', oral tradition, &c. phets. And the Lord laid, Go, and thou fhalt pre- ORAN, a very ftrong and important town of Afri- vail. This dialogue clearly proves thefe two things, ca, in Barbary, and in the kingdom of Tremecen, with that the devil could do nothing by his own power; feveral forts, and an excellent harbour. It is feated and, fecondly, that with the permiffion of God, he partly on the fide of a hill, and partly on a plain, could infpire the falfe prophets, forcerers, and magi- about a ftone-caft from the fea, almoft oppofite to Car¬ dans, and make them deliver falfe oracles. thagena in Spain. It is about a mile and an half in Refpe&ing the ceffation of profane oracles there circumference, and well fortified, but commanded by have been a variety of opinions; fome of which we the adjacent hills. It was taken by the Spaniards ia have already remarked. It has been generally held, 1509, and retaken by the Algerines in 17 8 ; but in indeed, that oracles ceafed at the birth of . Jefus 1.732 the Spaniards became matters of it, and have con- Chrift : Yet foine have endeavoured to maintain the tinued fo ever fince. E. Long. o. 8. N. Lat. 36. 2 contrary, by {bowing that they were in being in the ORANG outang. See Sjmia. Alfo Compara- days of Julian, commonly called the Apojlate, and that tive Anatomy, p. 250, ch. r. fe& 2. this emperor himfclf confulted them ; nay, farther, ORANGE, a famous city, and capital of a pro¬ fay they, hiftory makes mention of feveral laws pub- vince of the fame name, united to Dauphiny, with a 11 filed by the Chriftian emperors Theodoiius, Gratian, univerfity and a biftiop’s fee, fuffragan of Arles. It and Valentinian, to punifii perfons who interrogated is feated in a fine large plain, watered by a vaft num- them, even in their days; and that the Epicureans her of little rivulets on the eaft fide of the river Rhone, were the firft who made a jeft of this fuperftition, and It is a very large ancient place, and was confiderable expo fed the roguery of its priefts to the people. As in the time of the Romans, who adorned it with fe- we fuipeft moft of the fafts here affeited ftiould be veral buildings, of which there ate ftill fome ruins under Hood in a qualified fenfe, we {hall endeavour to left, particularly of an amphitheatre, and a triumphal difcufs this point of controverfy in as few words as arch, which is almoft entire, dedicated to Marius, pofiible, although it is undoubtedly a matter of fome This town was formerly much larger than it is at pre- confequence. ftrnt) as appears from the traces of the ancient walls. 1 u clueftlon’ Properly ftated, is not. Whether The wall was in 1682 entirely demolifhed by order of orac es became extindt immediately upon the birth of Louis XIV. and the inhabitants were expofed to the Chriff or from the very moment he was born ? but, fury of the foldiers. The town was reftored to King If fell gradually into difefteera and ceafed, as William by the treaty of Ryfwick j but after his N 2->0* death ORA Orange, death the French took it again, and expelled the pro- ‘“"■'V"”"’ teftant inhabitants. By the treaty of Utrecht it was confirmed to the crown of France, though the title is Bill retained in the houfe of Naflau. The title was firft introduced into the family of NaOau by the mar¬ riage of Claude de Chalons, the prince of Orange’s filter, with the count of Nafiau, 1530. The princi¬ pality is a very fmall dillridt, it being only twelve miles in length and nine in breadth, and the reve¬ nue amounts to about 50001. a year. The country is pleafant, and abounds with corn and fruit, but is ex- pofed to violent winds. E. Long. 4. 49. N. Lat. 44. 9. Maurice Prince of Ora^gu. See Maurice. Orangu Tree, in botany. See the article Citrus. —Orange-flowers are jultly efteemed one of the fineft perfumes; and though little ufed in medicine, yet the water diflilled from them is accounted ftomachic, cor¬ dial, and carminative. The fruit is cooling, and good in feverilh diforders, and particularly in diarrhoeas. Orange-peel is an agreeable aromatic, proper to repair and ftrengthen the ftomach, and gives a very grateful flavour to any infufions or tinctures into whofe com- pofitions it enters. It is particularly ufeful in pre¬ parations of the bark : gives an agreeable warmth to the infufion ; and, according to Dr Percival, confide- rably increafts its virtue. In the Philofophical Tranfaflions, n® 114, there is a v#ry remarkable account of a tree Handing in a grove near Florence, having an orange flock, which had been fo grafted upon, that it became in its branches, leaves, flower, and fruit, three-formed : fome emulating the orange, fome the lemon or citron, and fome partaking of both forms in one ; and what was very remarkable, was, that tbefe mixed fruits never produced any per- fe£l feeds; fometimes there were no feeds at all in them, and fometimes only a few empty ones. Orange^Peel. See Citrus and QRANGE-Tree. Orange-Dcv:, a kind of dew which falls in the fpring'time from the leaves of orange and lemon trees, which is extremely fine and fubtile. M. de la Hire ob- ferving this, placed fome flat pieces of glafs under the leaves to receive it ; and having procured fome large drops of it, was defirous of difeovering what it was. He foon found that it was not a ttierely aqueous fluid, beeaufe it did not evaporate in the air ; and that it was not a refin, becaufe it readily and perfectly mixed with water : it was natural then to fuppofe it a liquid gum ; but neither did this, on examination, prove to he the cafe ; for being laid on paper, it did not dry as the other liquid gums do Its anfwcring to none of thefe chara;iers, and its being of the confiftence of honey, and of a fweet fugar-like tafte, gave a fufpicioa of its being a kind of manna ; and whatever in the other trials had proved it not a refin, a gum, &c. all equally tends to prove that it is this fubftance. Orange Sea, in natural hiftory, a name given by Count Marfijdi to a very remarkable fpecies of marine fubftance, which he denominates a f/ant. It is tough and firm in its ftrufture, and in many things refembles the common tucust but iuftead of growing into the branched form which the generality of thofe fubftan- ces have, it is round and hollow, and in every refpeift refembles the (hape of an orange. It has, by way of root, fome exceeding fine filaments, which faften them- fclves to the rocks, or to fliells, ftones, or any thing elfe |hat comes in the way. From thefe there grows no Vol. XIII. Part L r 369 i ORA Marfigli, de la Her. pedicle; but the body of the orange, as it is called, is fattened by them to the rock, or other folid fub- ftance. The orange itfelf is ufualiy of about three or, four inches in diameter; and while in the fea, is full of water, and even retains it when taken up. In this ftate it frequently weighs a pound and a half; but when the water is let out, and it is dried, it becomes a mere membrane, weighing fcarce any thing. It i* Left preferved, by fluffing it with cotton as foon as the water is let out of it, and then hanging it up to dry. Its furface is irregular and rough, and its colour a dulky green on the outtide, and a clearer but fome- what bluilh green within ; and its thicknefs is about an eighth part of an inch. When viewed by the mi- crofcope, it is feen to be all over covered with fmall glandules, or rather compofed of them ; for they ftand fo thick one by another as to leave no fpace between, and feem to make up the whole fubftance; fo that it appeals very like the rough fhagreen fkm ufed to co¬ ver toys. Thefe are indeed fo many hollow dude, through which the fea-water finds a pafiage into the globe formed by this Ikin, and by this means it is kept always full and diftended ; on cutting it with a pair of feiffars, the w’ater immediately runs out,and the fldns collapfe; but there is fomething extremely remark¬ able in this, for the whole fubftance, near the wounded place, is in motion, and feems as if alive, and fenfibk of the wound. The glandules are found full of water, and refembling fmall tranfparent bottles; and what goes to the ftiu&ure of the plant befide thefe, is an affemblage of a vaft number of filaments, all which are likewife hollow, and filled with a clear and tranfpa¬ rent fluid. There is another fubftance of this kind, mentioned and deferibed by Count Marfigli, Triumfetti, and others, and called the ramofe or branched orange. This is very much of the nature of the former ; but, inftead of confiding of one round globule, it is formed of ftveral oblong ones, all pined together, and repre- fenting the branches of iotne of the fucufes, only they are ftiorter ; and thefe are al! hollow and full of water, in the fame manner as the fingle globes cf the com¬ mon kind. 1 his has, by way of root, certain fine and flender filaments, which faften it to the Hones or fhells near w hich it is produced ; and it is of a duflcy greenifh colour on the lurface, and of a fine bluifti green within. The furface, viewed by the microfeope, appears rough, as in the other, and the glandules are of the fame kind, and are always found full of clear water. See Corallines. ORA I ION, in rhetoric, a fpeech or harangue-, compofed according to the rules of oratory, but fpoken in public. Orations may be reduced to three kinds viz. the demonftrative, deliberative, and judicial To the demonftrative kind belong panegyrics, genethliaca, epithalamia, congratulations, &c. To the deliberative kind belong perfuafion, exhortation, &c. And to the judicial kind belong accufation, confutation, &c. Funera Oration. See Funeral Oration. ORATOR, among the Romans, differed from ap-itronus l ire latter was allowed only to plead cautea onibshalt or his clients; wifereas the former might quit the forum and af.end the roftra or tribunal, to harangue the fenate or the people. The orator/had rarely a profound knowledge of the law, but they were eloquent, and their ftyle was generally correct 3 A and Orange ti Orator. jQrator. a R A [ 3?o J ORA and concife. They were employed in caufes of im¬ portance, inftead of the common patron^. Orators, in the violence of elocution, ufed all the warmth of gefture, and even walked backwards and forwards with great heat and emotion. This it was which occa- ftpned a witticifm of Flavius Virginius, who alked one of thofe walking orators, §hiot miUia paffuum decLi- majjet ? ‘‘ How many miles he had declaimed;” Similar to the Roman orators were the GrecxanRhetons. See Rhetores. Public Okatox, an office of very confiderable dig¬ nity, and of feme emolument in the Englilh uni- verfities. The public orator is the principal, and in many cafes the only oftenfible, agent for the univerfity in all thofe matters or forms which are merely external. He carries on or fuperintends all correfpondences which are calcu¬ lated to promote the dignity, or raife the utility, of the feminary which conftitutes him. He has little to do, indeed, with the internal government of the body, for which a variety of officers in different departments are appointed; but in all public affairs he is, as it were, the mouth of the whole ; putting their deliberations into proper form, and communicating or publifhing them, according to the intention of the univerirty. Thus, if the whole univerfity, or a committee ap¬ pointed by them, or by ftatute, or by the will of any particular benefactor, have, after a comparative trial, adjudged a prize to any perfon or peifons^t is the bufinefs of the public orator to inform the fuccefsful parties of the iffue of the trial. Again, if for hngular learning, or for any remarkable o-ood will fhown to the univerfity by any perfon or perfons, the fenate or con¬ vocation are pleafed to declare their grateful fenfe of it, either by conferring degrees, or otherwife as they think fit, the public orator is to notiry this intention to the perfon or pei fons concerned ; and fo in other cafes. Another part of the public orator’s bufinefs is to prefent young noblemen, or thofe who take honorary degrees, tanquam nobiles^ to the vice-chancellor : this he does in a Latin fpeech, which, according to cir- cumftances, is either fnort or long ; and of which the fubjed is generally a defence of that particular ftatute which allows the fons of noblemen, and fome few Oratorio, others, to proceed to degrees before what is called the“W-"- Jlatutable time. In doing this, encomiums, often ftronger than juft, are made upon the learning and virtue of the noble candidate ; a view is taken of the dignity of his ancient houfe ; the honour is mentioned which has accrued to the univerfity from the aceeffion of fuch a member ; and the oration concludes with promifmg great credit from his future condudf, as well as benefit from the influence of his rank in the ftate. Thefe circumftances are deemed fufficient grounds for exempting the fons of noblemen from that tedious courfe of ftudy through which the duller fons of com¬ moners muft all pafs before they be thought worthy of academical honours. ORATORIO, in the Italian mufic, a fort of facred drama of dialogues; containing recitativos, duettos, trios, ritornellos, chorufes, &c. The fubjetts of thofe pieces are ufually taken from feripture, or the life of fome faint, &c. The mufie for the oratorios ihould be in the fineft tafte and heft chofen ftrains. Thefe oratorios are greatly ufed at Rome in the time of Lent, and of late in England. Meneftrier attributes the origin of oratorios to the crufades,' and fays that the pilgrims returning from Jerufakm and the Holy Land, &c. compofed fongs, reciting the life and death of the Son of God, and the myfteries of the Chriftian faith, and celebrating the , atchievements and conftancy of faints and martyrs. Others, with more probability, obferve, that the ora¬ torio was an avowed imitation of the opera, with only this difference, that the foundation of it was always fome religious, or at leaft fome moral fubjedi. Crefcim- beni aferibes its origin to San Filippo Neri, who was born at Florence in 1515, and who, in his chapel, after fermons, and other devotions, in order to allure young people to pious offices, had hymns, pfalms, and fuch like prayers, fung by one or more voices. Among thefe fpiritual fongs were dialogues ; and thefe entertainments becoming more frequent, and impro¬ ving every year, were the occafion that in the feven- teenth century oratorios were firft invented, fo called from the place of their origin. See Hawkins's Hjjlary of Mujic. O Pv A T O R Y; Tke art of fpeaking well upon any fubject, in order to perluade. INTRODUCTION. § I. Of the Rife and Pregrefs of Oratory. HE invention of oratory is by the Egyptians, and the fables of the poets, aferibed to Mercury. And it is well known, that the Greeks made their dei- j ties the authors likewife of other arts, and fuppofed The origin that they prefided over them. Hence they gave Mer- ©f the art. cmy the titles of Aqj-j©- and both which names of oratoiy. come from words that fignify “ to fpeak.” And An¬ ilides calls eloquence the gift of Mercury; and for the fame reafon anciently the tongue was confecrated to him. He was likewife faid to be the interpreter or meffenger of the gods ; which office very well fuited him, at he excelled in eloquence. Hence we read in the Sacred Writings, that when the people of Lyftra took Barnabas and Paul for gods in human fhape, be- caufe of that fudden and furprifing cure which was wrought upon the lame man, they called Barnabas pitery and Paul Mercury ; for this reafon, as the in- fpired writer tells us, ‘ becaufe he was the chief fpeak- er,’ that is (as the fpedlators then thought], the inter¬ preter or fpokefman of Barnabas. But to pafs over thefe fidlions of the heathen deities, let us hear what Quintilian fays of the origin of this art ; who feems to give a very probable account of it in the following paffage. “ The faculty of fpeech (fey* 37* Intrctl. ORA! (fays ihe) we derive from nature (a) } but the art from obfervation. For as in phyfic, men, by feeing that fome things promote health and others deftroy it, form¬ ed the art upon thofe obfervations; in like manner, by perceiving that fome things in difcotirle are faid to advantage, and others not, they accordingly marked thofe things, in order to imitate the one and avoid the other. They alfo added fome things from their own reafon and judgment, which being confirmed by ufe, they began to teach others what they knew therrt- felves.” But no certain account can be given when, or by whom, this method of obfervation fir'd began to take place. And Ariftotle fuppofes, not without reafon, that the firft lineaments of the art were very rude and imperfect. Paufanias, indeed, in his Defcrip- ilon of Greece, tells us, that Prttheus, the uncle of The- feus, taught it at Trezene a city of Peloponnefus, and wrote a book concerning it; which he read hiriifelf, as it was publifhed by one of Epidaurus. But as Piu thcus lived about ioc» years before Paufanias, who flourifhed in the time of the emperor Hadrian, fome are of opinion he might be impofed upon by the Epi- daurian, who publifited this book under the name of Pittheus. But be that as it will, it is very reafonable to believe, that the Greeks had the principles of this art fo early as the time of Pittheus. For Thefeus his ne¬ phew’ lived Hot long before the taking of Troy, which, according to Sir Ifaac New ton, happened 904 years before the birth of Chrift ; at which time Cicero thought it was in much efteem among them. “ Homer (fays he) would never have given tllyffes and Neftor in the Trojan wars fo great commendations on account of their fpeeches (to one of whom he attributes force, and to the other fweetnefs of expreffion), if eloquence hai not in thofe times been in great repute.” dind Idt any one fiiould imagine, that in thofe days they made ufe only of fuch helps as nature and practice could afford them, the fame poet informs us, that Pe- leus fent Phoenix with his ion Achilles to the Trojan war, *0 indrufl him not only in the art of war, hut likewife of eloquence. But who were the profeffors of this art for fome ages following is not known. For Quintilian fays, that afterwards Empedocles is the fird upon record who attempted any thing concerning it. And he, by Sir Ifaac Newton's account, flouviihed about 500 years after Troy was taken. At which time, as Cicero obferves, men being now fenfible of the powerful charms of oratory, and the influence it had upon the mind, there immediately ^rofe feveral maflers of it ; the chief of whom are mentioned by Quintilian, who tells us, that ‘ the olded wnuters up¬ on this art are Corax and Tifias, both of Sicily. After them came Gorgias of Lecntium in the fame iflatid, who is faid to have been the fcholar of Empedocles, 4 and by reafon of his great age (for he lived to be 109 Orators of years old) had many cotemporaries. Thrafymachus of Greece. Chalcedon, Prodicus of Cea, Protagoras of Abdera* Hippias of Elis, and Alcidamus of Elea, lived in his O R Y. time ; as likewife Antiphon, who ftfd wrote orations, and alfo upon the art, and is faid to have ipoken ad¬ mirably well in his own defence ; and befide^ thefe, -Polycrates* and Theodore of Byzantium.’ Thefe perfons contributed different ways towards the im¬ provement of the art. Corax and Tifias gave rules ,for methodizing a dilcourfe, and adjufting its particu¬ lar parts; as maybe conjeitured from Cicero’s account of them, who lays, “ Though fome had fpoke well before thtir time, yet none with order and method,’* But Gorgias feems to have excelled all the reft in fame and reputation : for he was fo highly applauded by all Greece, that a golden ftatue was credit'd to him at Delphos, which was a diftinguifhing honour conferred upon him only. And he is faid to have been fo great a mafter of oratory, that in a public affembly he would undertake to declaim immediately upon any fubjedl propofed to him. Pie wrote, as Cicero informs us, in the demonllrative or laudatory way ; which requires moil of the fublime, and makes what Diodorus Siculus fays of him the more probable, that “ he firft intro¬ duced the ftrongeft figures, members of periods oppo- fite in fenfe, of an equal length) or ending with a like found, and other ornaments of that nature.” And hence thofe figures, which give the greatell force and luftre to a difeourf?, were anciently called by his name. Cicero tells us further, thac Thrafymachus and Gor¬ gias were the firit who introduced numbers into profe, which Ifocrates afterwards brought to perfeftion. Quintilian likewife mentions Protagoras) Gorgias, Pro¬ dicus, and Thrafymachus, as the firil who treated of common places, and Ihowed the ufe of them for the in¬ vention of arguments. Nor muff we omit Plato* whofe elegant dialogue upon this fubjedf is Rill extant* wjjich he intitles Gorgias. For though he does not lay down the common rules of the art; yet he very well explains the nature of it, and maintains its true end and ufe againft the generality of its profeffors, who had greatly perverted the original defign of it. Thus by the Rudy and induRry of fo many ingenious and great men, the art of oratory was then carried to a conliderable height among the Grecians. Though many of thofe who profeffed it in thofe times em¬ ployed their ikill rather to promote their own reputa¬ tion and applaufe, than to ferve the real intereRs of truth and virtue. “ For they propofed in an arro¬ gant manner (as Cicero fays) to teach how a bad caufe might be fo managed, as to get the better of a good one.” That is, they would undertake to charm the ears and ftrike the paffions of their hearers in fo powerful a manner, by lophiRical reafonings, turns of wit, and line language, as to impofe falfc ♦ jod upon them for truth ; than which nothing could be either more difmgenuous in itfelf, or prejudicial to fociety. But thofe who fucceeded them feem to have con- fulted better, both for their own honour and that of { their profeffion. Ilocrates was the moR renowned of 3 A 2 all (a) If Quintilian meant that the human race fpeck an articulate language by nature or InRintfH he cer¬ tainly deceived himfelf (fee Language) ; but if his meaning was only that men have from nature a capabi¬ lity of fpeeth, the obfervation is ttue, but not of much value. Parrots and other birds have a capability of uttering articulate founds. 372 ©RAT ' all Gorglas’s fcholars, w!iom Cicero frequently ex¬ tols with the hightft commendations, as the greatefl mafter arfd teacher of oratory ; “ whofe fchool (as he f iys) like the Trojan horfe, fent forth abundance of great men.” Ariftotle was chiefly induced to engage in this province from an emulation of his glory ; and would often fay in a verfe of Sophocles, fomewhat va¬ ried to his purpofe, To be filent it is a fhame; While Ifocrates gets fuch fame. Quintilian fays they both wrote upon the art, though there is no fyflem of the former now extant But that of Ariffotle is efteemed the beft and moft complete of any in the Greek language. In this age the Gre¬ cian eloquence appeared in its highefl perfedtion. De- mofllienes was an hearer both of Ifocrates and Plato, as alfo of Ifseus (ten of whofe orations are yet extant); and by the .Aid a nee of a furprifing genius, joined with indefatigable induftry, made that advantage of their precepts, that he has been always edeemed by the belt judges the prince of Grecian orators. His great adverfary an 1 rival ^Sfchines, after his banifh- tnent, is faid to have gone to Rhodes, and employed his time there in teaching of rhetoric. Tbeode&es and Theophraftus, both of them fcholars of Ariifotle, imi¬ tated their mafter in writing upon the art. And from that time the philofophere, efpecially the ftoics and peripatetics, applied themfelves to lay dowm the rules of oratory ; which Socrates had before feparated from the province of a philofopher. And there is yet pre- ferved a treatife upon this fubjedt, which fame have ^ aferibed to Demetrius Phalereus the peripatetic, and fcholar of Theophraftus, though others more probably to Dionyfius of Ha'icarnafTus. Quintilian mentions fe- veral other famous rhetoricians in the following ages, who were likewife writers; as Hermagoras, Athcnaeus, Apollonius Melon, Areus Caseilius, Dionyfius of Ha- licarnafTus, Apollonius of Pergamus, and T' eodore of Gadara. But of thefe nothing now remains upon the fuhjeft of oratory, except fome trafts of Dionyfius, who flburifhed in the reign of Auguftus Casfar. Nor have there beeen wanting fome eminent writers of this kind among the Greeks fince the time of Quintilian ; two of whom we cannot omit to mention, Hermo- genes, and Longinus the author of the incomparable treatife Of the Sublime^ a book which can fcarce be too 3 much commended or too often read. ?.:fe and It was Jong before Rome received this art, and not "’'tt10111 difficulty at firft. The reafon was, becaufe the Romans were for feveral ages wholly addi&ed to miliary affairs, and to enlarge their territories ; fo that they not only neglecded to cultivate learning, but thought the purfuit of it a thing of ill tendency, by diverting the minds of their youth from the cares and toi^s of war, to a more foft and indolent kind of life. Therefore fo late as the year of their city 592, when by the induftry of fome Grecians the liberal arts be¬ gan to flburilh in Italy, a decree paffed the fenate, by which all philofophtrs and rhetoricians were ordered to depart out of Rome. But in a few years after, when C ' neades, Critolaus, and Diogenes, who were not only philofophers but orators, came ambafladors from Athens to Rome, the Roman youth were fo charmed with the eloquence of their harangues, that O R Y. Introd. ©rat< ry in 2tome, they could no longer be ftopt from purfuing the ffudy of oratory. And by a further acquaintance with the Greeks, it foon gained fuch eUeem, that perfons of the firft quality employed their time and pains to acquire it. And a young gentleman, who was ambitious to advance himfelf in the fervice ol his country, could have little hopes of fuccefs, unlefs he had laid the foun¬ dation of his future profpe&s in that ffudy. Seneca tells us, that Lucius Plotius, a Gaul, was the firft who taught the art of oratory at Rome in Latin ; which Cicero fays, war tvhile he was a boy ; and when the moft ftudious perfons went to hear him, he lamented that he could not go with them ; being prevented by the regard he paid to the opinion of fome of his friends, who thought that greater improvements were made by txercifes in the Greek language under Grecian matters. Seneca adds, that this profeffion continued for fome time in the hands of freedmen ; and that the firft Roman who engaged in it was Blan- dus of the equeftrian order, who was fucceeded by others ; fome of whofe lives are yet extant, written by Suetonius, as many of the Grecians are by Philoftra- tus and Eunapius. Quintilian likewife gives us the names of thofe among the Romans, who wrote upon the art. The firft (fays he), as Far as I can learn, who compofed any thing upon this argument, was M. Cato the cenfor. After him Anthony the orator be¬ gan upon the fubjeft, which is the only work he has left, and that imperfedL Then followed fome of lefs note. But he who carried eloquence to its higheft pitch among us, was Cicero; who has likewife by his rules given the beft plan both to pradlife and teach the art. After whom modefty would require us to men¬ tion no more, had he not told us himfelf, that his books of rhetoric flipt out of his hands, while he was but a youth. And thofe lefler things, which many perfons want, he has purpofely omitted in his dif- courfes of oratory Cornificius wrote largely upon the fame fubjed! ; Stertinius and Gallio the father, each of them fomething. But Cclfus and Lenas were more accurate than Gallio ; and in our times VLginius, Pliny, and Rutilius. And there are at this day fome celebrated authors of the fame kind, who, if they had taken in every thing, might have faved my pains.” Time has fince deprived us of moft of the writers men¬ tioned here by Qiiintilian. Birt we have the lefs rea¬ fon to regret this lofs, fince it has preferved to us Ci¬ cero’s treatifes upon this fubjedt; which we may well fuppofe to have been chiefly owing to their own excel¬ lency, and the great efteem they have always had in the world Befides his Two Books of Invention^ which Quintilian here calls his Books of Rhetoricy there are extant of his. Three Books of an Orator; one Of famous Orators; and another, which is called Tlx Orator; as alfo his Topics, a preface Concerning the btfl fort of Ora¬ tors, and a treatife Of the parts of Oratory, Each of which treatiTcs, whether we regard the juftnefs and delicacy of the thoughts, the ufefulnefsof the rules, or the elegance and beauty of the ftyle, deftrves to be frequently perufed by all who are lovers of eloquence. For who can be thought fo well qualified to give the rules of any art, as he who exetlied ail mankind in the pradbice of them ? But thofe Four books to Herenniuty which are publifhed among Cicero’s works, feem with good xeafon to be attributed to Cornificius, whora Quin-. I 371 Introd. O R A T Quintilian here mentions. And Celfus is by fome af¬ firmed to have taught oratory, whom he alfo places among the rhetoricians, and whofe Eight Boohs of Me¬ dicine are vet extant, written in fo beautiful a ftyle as plainly (hows him to be a mailer of eloquence. But Quintilian himfclf outdid all who went before him in diligence and accuracy as a writer. His Injlitutions are fo comprehenfive. and written with fuch great exa6t- nefe and judgment, that thev are generally allowed to be the mod: perfeft work of the kind- With this ex¬ cellent author we lhall finifh the account of the Latin rhetoricians. There were indeed fome others in the following ages, whofe works are yet extant ; but as they con¬ tain nothing of moment which is not to be found in thofe already mentioned, we fhall forbear to name them. Much lefs (hall we defeend to that numerous body of writers, who fince th;* revival of learning have treated upon this fuhje£l, for the fame reafon And * Archb. a very good judge* has not long fince given it as his Cambray, Op;n;on, that the method of forming the belt fyftem 4*1/. p.313. of j8 to colleft it from the fineft precepts of Ariftotle, Cicero, Quintilian, Longinus, and other celebrated authors with proper examples taken from the choiceft parts of the pureft antiquity. And this is the method attempted to be purfued in the follow¬ ing treatife. ' § 2. 0/ the Nature of Oratory. The terms rhetoric and oratory^ having no other dif¬ ference but that one is taken from the Greek language and the other from the Latin, may be ufed promifeu- cufly . but the cafe is not the fame with refpeft to the words rhetorician and orator. For although the Gre¬ cians ufed the former, both to exprefs thofe who caught the art, and fhofe who pra&ifed it; yet the Romans afterward, when they took that word into their lan¬ guage, confined it to the teachers of the art, and call¬ ed the reft orators. And there feems to have been a fufficient reafon for this diftin&ion, fince the art was the fame in both, and might therefore go by either name : but the different province of rhetoricians and orators made it not improper that they fhould be call' ed by different names. Befides, anciently, before rhe¬ toric was made a feparate and dillinft art from philo- fophy, the fame perfons taught both And then they were called not only rhetoricians but fophifls. But becaufe they often employed their art rather to vindi¬ cate what was falfe and unju% than to fupport truth and virtue : this difingenuous conduft, by which they frequently impofed upon weak mind^, brought a dif- credit both upon themfelves and their profefllon. And therefore the name fophifi, or fophijier, has been more generally ufed in an ill fenfe, to fignify one /killed ra¬ ther in the arts of cavilling, than qualified to fpeak welt and accurately upon any fubjett. •ratorv an 18 not neceHary to ujk many words, to prove that art. oratory is an art. For it is comprifed under certain rules, agreeable to reafon, delivered in a regular me¬ thod, and fuited to attain the end it propofes ; which are ch,traders fufficient to denominate it an art. lo- dted the cafe is the fame here as in moft other things, that a good irenius is of itfelf more ferviceable than the moil exad acquaintance with all the rules of art, where that is waning- But it is fufficient that art O R Y. help nature, and car»y it farther than it can other- wife advance without it. And he who is defirous to gain the reputation of a good orator, will find the af- fiftance of art very neceffary. t'cme perfons have thought, that many of the common fyftems written up¬ on the fubjed of oratory have been attended with this inconvenience, that, by burdening the mind with too great a number of rules about things of lefs import¬ ance, they have oftentimes rather difeouraged than promoted the ftudy of eloquence. This undoubtedly is an extreme which ffiould be always carefully avoids ed. But, however, an indifferent guide in a ftrange road is better than none at all. It may be worth while to hear Quintilian’s opinion upon this head. “I would not (lays he) have young perfons think they are fuf- ficiently inftrnded, if they have learned one of thofe compends which are commonly handed about, and fancy themfelves fafe in the decrees, as it were, of thefe technical writers. 'The art of fpeaking requires much labour, conftant ftudy, a variety of exercife, many trials, the greateft prudence, and readinefs of thought. However, thefe treatifes are ufeful. when they fee you in a plain and open way, and do not confine you to one narrow tradb, from which he who thinks it a ctime *0 depart muft move as flowly as one that walks upon a rope.” We fee he is not for having us confine ourfelves too clofely to fyftems, though he thinks they are of fervice at firft, till ufe and experience render them lefs neceffary. The bufinefs of oratory is to teach us to fpeak well; The which, as Cicero explains it, is to fpeak jujlly> metho-Q^lX" duallyy floridly) and copioufly. Now, in order to fpeak jujlly, or pertinently, a per- fon muft be mafter of his^fuhjedb, that he may be able to fay all that is proper, and avoid whatever may ap¬ pear foreign and trifhng. And he muft clothe his thoughts with fuch words and expreffions as are moft fuited to the nature of the argument,.and will give it the greateft force and evidence. And as it teaches to fpeak jiiftly, fo likevvife metho¬ dically. This requires, that all the parts of a difeourfe be placed in their proper order, and with fuch juft con- nedbioH, as to reflect a light upon each other, and thereby to render the whole both clear in itfelf, and eafy to be retained. But the fame method is not pro¬ per for all difeourfes. And very frequently a different manner is convenient in handling the fame fiibjedL For it is plain, that art, as well as nature, loves va¬ riety ; and it difeovers the fpeaktr’s judgment, when the difpofition of his difeourfe is fo framed, as to ap¬ pear eafy and natural, rather than the effeift of indu- ftry and labour;, ' To fpeak floridlyy is fo peculiar a property of this art, that fome have wholly confined it to the pomp and ornaments of language. But that it extends far¬ ther, . and refpedts things as well as words, we (hill have occafion to fhow hereafter. It contains indeed the whole fubjedb of elocution, hut does not wholly conflft in it. True and folrd eloquence requires not, only the benuties and flowers f la igutge, but likewife the heft fenfe and cleared: r fnning. Befides rheto¬ ric gives rules for the feveral forts of ftyie, and di- re&s the ufr of them agreeably to the nature of the fujeCt. But the force of oratory appears in nothing more than .■374 O R A T than a cop'ioufnefs of exprefilon, or a proper manner of enlargement, fuited to the nature of the fuhjeft ; which is of great ufe in perfuafion, and forms the laft property* required by Cicero, of fpeaking well. A fhort and concife account of things is often attended with obfcurity, from an omiflion of fome neceflary cir- cumftances relating to them. Or, however, where that is not the cafe, yet for want of proper embelliihments -to enliven the difcourfe, and thereby to excite and hx the hearers attention, it is apt to flip through their minds without leaving any imprefixon. But where the images of things are drawn in their full proportion, painted in their proper colours, fet in a clear light, and reprefented in different views, with all the ftrength and beauties of eloquence, they captivate the minds of the audienae with the highelt pleafure, engage their attention, and by an irreliftible force move and bend them to the defign of the fpeaker. The principal end and defign of oratory is to per- fuade : for which reafon it is frequently called the art of perfuajion. Indeed the orator has often other fub- ordinate views; as when ‘he endeavours either to de¬ light his hearers with what is pleafant and agreeable, or to conciliate their good opinion by a fmooth and artful addrefs : but ftill both thefe are in order toper- fuade and excite them to aftion. An objeftion may, perhaps, hence be formed againft eloquence, as an art which may be employed for per- Xuading to ill as well as to good. There is no doubt that it may ; and fo reafoning may alfo be, and too often is, employed for leading men into error. But who -would think of forming an argument from this againft the cultivation of our reafoning powers ? Rea¬ fon, eloquence, and every art which ever has been ftu- dted among mankind, may be abufed, and may prove dangerous in the hands of bad men ; but it were per¬ fectly child.fh to contend, that upon this account they ought to be abolifhed. While the orator employs his art in purfiiing only thofe ends for which it was at firft defigned, the per- fuading men to good and virtuous actions, and dif- ° R Y- Partr. fuading them from every thing that is ill and vicious ; nothing can be more commendable in itfelf, or ufcful to human focieties. § 3- Of the D'rvijton of Oratory. Oratory confifts of four parts ; invention^ difpojl.Ox-wory tioriy elocution, and pronunciation. This will appearconfifts by confidering the nature of each of them, and what fourpa,ts‘ it contributes in forming an orator. Every one who aims to fpeak well and accurately upon any fubje^t, does naturally in the firft place inquire after and pur- fue fuch thoughts as may feem moft proper to explain and illuftrate the thing upon which he defioms to dif¬ courfe. And if the nature of it requires that’he fliould bring reafons to confirm what he fays, fhe not only feeks the ftrongeft, and fuch as are like to be beft re¬ ceived ; but alfo prepares to anfwer any thing which may be offered to the contrary. This is invention After this he deliberates with himfelf in what method to difpofe of thofe things which have occurred to his min i, that they may appear in the plained light, and not lofe their force by diforder and confufion. This is the bufinefs o. dtj'pojition.-— His next concern is to give his thoughts an agreeable drefs; by making choice of the fitteft words, cleareft expreffions, fmooth and harmonious periods, with other ornaments of ftyle, as may beft fuit the nature of his fubjecft, brighten his difcourfe, and render it mdft entertaining to his hear¬ ers. And this is called elocution.—The laft thing he attends to, is to deliver what he has thus compofed, with a juft and agreeable pronunciation. And daily experience convinces us, how much this contributes both to engage the attention and irtiprefs what is fpo* ken upon the mind. This then is the method to which nature dire&s, in order to qualify ourfejvea for difcour- fing to the beft advantage : '1 hough by cuftom and habit thefe things become fo fajniliar to us, that we do not always attend to them feparately in their na¬ tural order. However, it is the bufinefs of art to fol¬ low nature, and to treat of things in that manner which flie didtates. PartI. Of INVENTION. Chap.I. Of Invention in general; and particu¬ larly of Common Places, and State of a Caufe. 7 tNvention, confidered in general, is the difeovery Invention 1 0f fuch things as are proper to perftiade. And ver^of0" in or^er to attain this end, the orator propofesto him- ffudi tilings felf three things; To prove or illuftrate the fubjedl up¬ as are fitted on which he treats; to conciliate the minds of his hear- topeifuade. ers ; and to engage their paflionsin his favour. And as thefe require different kinds of arguments or mo¬ tives, invention fur nifties him with a fupply for each of them, as will be fliown in their order. An argument, as defined by Cicero, is a reafon which induces us to believe what berore we doubted of. And as different kinds of difeourfes require different -arguments, rhetoricians have coniideted them two ways ; in general, under certain heads, as a common fund for all fubjetis; and in a more particular manner, as they ere fuited to demon/}ra five, deliberative, or ju¬ dicial difeourfes. At prefent we (hall treat only uport the former of thefe. And now, that one thing may receive proof and confirmation from another, it is ne* ceffary that there be fome relation between them ; fof all things are not equally adapted to prove one ano¬ ther. Thus, in meafuring the quantity of two things which we would fhow to be cither equal or unequal, if they are of fuch a nature that one cannot be applied to the other, then we take a third thing, which may be applied to them both ; and that muft be equal at leaft to one of the two, which if applied to the other and found equal to that alfo, we prefently conclude that thefe two things are equal; but if it be unequal to the other, we fay that' thefe two things are un¬ equal. Becaufe it is the certain and known property ot all quantities, that whatfoever two things are equal to a third, are equal to one another; ancfwhere one of any two things is equal to a third, and the other unequal, thofe two things are Unequal to one another. What has been fiid of quantities, will hold true in all other cafes, that fo far ss any two things or ideas 5 agree Tart T. Invention. ORATORY. 375 8 Thefe call cd argu¬ ments. *) I,earning neceffai y an oratjr. agree to a third, fo far they agree to one another. So likewife, on the contrary, as far as one of any two things or ideas does agree to a third, and the other does not, fo far they difagree with one another; in ■which Tefpedd, one of them cannot be truly affirmed of the other. Since, therefore, in every propofition, one thing is fpnken of another, if we would find out whe¬ ther the two ideas agree to each other or not, where this is not evident of itfelf, we muft find out fome third thing, the idea of which agrees to one of them; and then that being applied to the other, as it does agree or difagree with it, fo we may conclude, that the two things propofed do agree or difagree with one another. This will be made more clear by an example ot two. Should it be inquired, Whether virtue is to beloved; the agreement between virtue and love might be found by comparing them feparately with happinefs, as a common meafure to both. For fince the idea of happinefs agrees to that of love, and the idea of virtue to that of happinefs ; it follows, . that the ideas of virtue and love agree to one another : and therefore it may be affirmed, That virtue is to bt loved. But on the contrary, becaufe the idea of mi- fery difagrees with that of love, but the idea of vice agrees to that of mifery, the two ideas of vice and love muft confequently difagree with one another; and therefore it would be falfe to affirt, That vice is , to fye loved. Now, this third thing logicians call the medium, or middle term, Lecaufe it does as it were conned two extremes ; that is, both parts of a pro¬ pofition. But rhetoricians call it an argument, be¬ caufe it is fo applied to what was before propofed, as to become the inftrument of procuring our afi'ent to it. Thus far as to the nature and ufe of arguments. We (hall next explain by what methods they are to be fought. A lively imagination, and readinefs of thought, are undoubtedly a very great help to invention. Some perfons are naturally endued with that quicknefs of fancy, and penetration of mind, that they are feUotn at a lofs for arguments either to defend their own opinions, or to attack their adverfaries. However, thtfe things being the gift of natuie, and not to be gained by art, do not properly fail under our prefent confideration. It will be readily granted, that great learning and toextenfive knowledge are a noble fund for invention. ■ An orator therefore fhould be furnifhed with a flock of important truths, folid maxims of reafon,and a variety of knowledge, colle&ed and treafured up both from obfervation and a large acquaintance with the liberal arts : that he may not only be qualified to exprefs him fell' in the moft agreeable manner, but likewife to fupport what he fays with the llrongeft and cleareft .arguments. But becaufe all are not born with a like happy genius, and have not the fame opportunity to cultivate their minds with learning and knowledge ; and be¬ caufe nothing is more difficult than to dwell long upon the confideration of one thing, in order to find out the ftrongelt arguments which may be offered tor and againft it; upon thefe accounts, art has preferibed -a method to leffen, in fome meafure, theft mffkultie-, and help every one to a fupply of arguments upon any fubjea. And this is done by the contrivance of cow- Inve,'tl 'n-, mon places, which Cicero calls the fiats or heads of arguments, and by a Greek name topics. They are of two forts, internal and external. 10 I. Internal Mies. Though things, with regard to Rules of art their nature and properties, are exce5^'ni^y var*ous, 0y yet they have certain common relations, by me^s exterif1Ve whereof the truth of what is either affirmed or denied ]ea njng cr concerning them in any refpedl may be evinced. The acute ge- ancient Greek rhetoricians therefore reduced thefe re- nius. lations to fome general heads, which are termed loci or common places; becaufe the reafons or arguments fuited to prove any propofition ate repofited in them, as a common fund or receptacle. And they are call¬ ed internal heads, becaufe they arife from the fubjedt upon which the orator treats; and are therefore di- ftinguiffied from others named external, which he fetches from without, and applies to his prefent purpofe, as will be ffiown hereafter. Cicero and Quintilian make them 16; three of which comprehend the whole thing they are brought to prove, namely, dejinitton, enumeration, and notation : of the remaining 13, iome contain a part of it, and the reft its various pro-, perties and circumftances, with other confiderations relating to it; and thefe are, genus, fpecies, antecedents, confequents, adjuncts, conjugates, caufe, effect, contraries, oppo/ites.fimilkude, diffmilitude, and companfon. Definition explains the nature of the thing defined, and (hows what it is. And to whatfoever the defini¬ tion agrees, the thing defined does fo likewife. If therefore Socrates be a rational creature, he is a man; becaufe it is the definition of a man, that he is a ra¬ tional creature. Enumeration takes in all the parts of a thing. And from this we prove, that what agrees to all the parts agrees to the whole ; and what does not agree to any¬ one or more parts, does not agree to the whole : As when Cicero proves to Pifo that all the Roman ftate hated him, by enumerating the feveral ranks and orders of Roman citizens who all did lo. Notation, or etymology, explains the meaning or fignification of a word. From which we reafon thus ; “ If he cannot pay his debts, he is infolventfor that is the meaning of the word infolvent. Genus is what contains under it two or more forts of things, differing in nature. From this head logi¬ cians reafon thus : u Becaufe every animal is mortal, and man is an animal, thereiore man is mortal.” But orators make a further ufe of this argument, which they call afe ending from the hypothefis to the tbefis ; that is, from a particular to a general: As fhould a per- fon, when fpeaking in praife of juftice, take occafion r from thence to commend and fiiow the excellency of virtue in general, with a view to render that particular virtue more amiable. For fiace eveiy fpecies contains in it the whole nature of the genus to which it relates, befides what is peculiar to itfelf, whereby it is diftin- guifhed from it; what is affirmed of the genus, muft of neceffity be applicable to the fpecies. Species is that which comprehends under it all the individuals of the fame nature. From hence we may argue, “ He is a man, therefore he has a rational foul.” And orators fometin.es take occafion from this head to dtfeend from the thefis to the hypothefis; . that ' .TTS _ ORA v> ’ ,0 tfiat Is, in treating upon what Is more general, to in¬ troduce feme particular contained under it, for the greater illuflration of the general. Antectdents are fuch things, as, being once allowed, others nect ITarily, or very probably, follow. From this head an infeparable property is proved from its fubjed: as, It is material, and therefore corruptible. Confequents are fuch things as, being allowed, necef* farily or very probably infer their antecedents. Hence the fubjed is proved from an infepflrable property, in this manner: It is corruptible, and therefore material. are feparable properties of things, ©r cir- cumftances that attend them. Fhefe are very ntime- flous, and afford a great variety of arguments, fome of which ufually occur in every difeourfe. They do not neceffarily infer their fubjed ; but, if fitly chofen, render a thing credible, and are a fuffieient ground for affent. The way of reafomng from them we fhall (how prefently. Conjugates are words deduced from the fame origin with that of our fubjed By thefe the habit is proved from its ads : as, He who does juftly is juft. He does not ad wifely, therefore he is not wife. But this infe rence will not hold, unlefs the adions appear continued and conftant. A caufe h that, by the force of which a thing does exift. There are four kinds of caufcs, matter form, efficient, and end, which afford a great variety of ar¬ guments. The way of reafoning from them is to in¬ fer the effed from the caufe: as, Man is endued with reafon, therefore he. is capable of knowledge. An ejfed is that which arifea dom a caufe, there¬ fore the caufe is proved by it: as, He is endued with knowledge, therefore with reafon. Contraries are things, which, under the fame genus, are at the utmoft diftance from each other: fo that what we grant to the one, we utterly deny the other : as, Virtue ought to be embraced, therefore vice (hould be avoided- Oppofites are fuch things, which, though repugnant to each other, yet are not diredly contradidory : as To love and to injure, to hate and to commend. They differ from contraries in this, that they do not abfo- lutely exclude one another. A n argument is drawn from things repugnant, thus : He will do a man a mif- chief, therefore he does not love him. He loves a man, therefore he -' ill not reproach him. SimHituJe is an agreement of things in quality. Thus C icero proves, that pernicious citizens ought to be taken out of the ftate; by the likenefs they bear to corrupted members, which are cut off to prevent fur¬ ther damage to the body. Diffimilitude is a difagreement of things in quality. From this head Cicero Ihows the preference of his own exile to Fife’s government of Macedonia ; by the dif¬ ference between their condud, and the people’s efteem of them. Comparifon is made three ways: for either a thing is compared with a greater, with a lefs, or with its equal. 1 bis place, therefore, differs from that of fimilitude on this account, that rhe quality was confi- dered in that, but here the quantity. An argument from the greater is thus drawn : If five legions could not conquer-the enemy, much lefs will two. We f.iffl juft give one example of the manner of N° 250. TORY. paltr. reafoning from thefe heads, whereby the ufe of them Invention, may further appear. If any one, therefore, ffiould v— have endeavoured to perfuade Cicero not to accept of his life upon the condition offered him by Antony, ,,er 0f Ie^. That he would burn his Philippic orations which had foiling front been fpoken again ft him, he might be fuppofed to thek ufe fuch arguments as thefe ; partly taken from the adjunds of Cicero, partly from thofe of Antony, and partly from the thing itfelf. And firft with regard to Cicero, it might be faid, That fo great a man ought not to purchafe his life at fo dear a price a s'the lofsof that immortal honour which by fo great pains and labour he had acquired. And this might be confirm¬ ed by another argument, That now he was grown old, and could not exped to live much longer. And from the charader of Antony he might argue thus ; That he was very crafty and deceitful; and only de¬ signed, by giving him hopes of life, to have the Phi¬ lippics firft burnt, which otherwile he knew would tranfmit to pofterity an eternal brand of infamy upon him -5 and then he would take off the author. And this might be fhown by comparifort. For fince he would not fpare others, who had not fo highly exaf’ perated him, and from whom he had not fo much to fear; certainly he would not foigive Cicero, fince he knew well enough, that fo long as he lived, he him- felf could never be in fafety. And, laftly, an argu¬ ment might alfo be fetched from the nature of the thing itfelf, in the following manner : That Cicero by this adion would ftiamefully betray the ftate, and the caufe of liberty, which he had through his whole life moft courageoufiy defended, with fo great honour to himfelf, and advantage to the public. Upon fuch an account, a perfon might have ufed thefe or the like arguments with Cicero, which anfe from the fore- mentioned heads. From this account of common places, it is eafy to conceive what a large field of difeourfe they open to the mind upon every fubjed. At the fame time, ** though we have mentioned them from our refped for the orators of Greece and Rome, we heartily urihty un- fubferibe to the opinion of a celebrated modern, who lefs there is gives of them the following account. a previous “The Grecian fophifts were the firft inventors of this foun^3t‘ori artificial fyftem of Oratory ; and they /bowed a pro- andgeniuf. digious fubtilty and fertility in the contrivance of thefc loci. Succeeding rhetoricians, dazzled by the plan, wrought them into fo regular a fyftem, that one would think they meant to teach how a ptrfon might mechanically become an orator, without any genius at all. They gave him receipts for making Lie* fpeeches on all manner of fubjeds. At the fame time, it is evident, that though this ftudy of common places might produce very fhowy academical declamations, it could never produce ufeful difeourfes on real bufinefs. The loci indeed fupplied a moft exuberant fecundity of matter. One who had no other aim, but to talk co- pioufly and pl?ufisly, by confulting them on every fir jed, and laying hold of all that they fuggefted, might difeourfe without end ; and that, too, though he had none but the moft fuperficial knowledge of his fubjed. But filch difeourfe could be no other than tri¬ vial. What is truly lolid and perfuafive, muft be drawn ex vi/cenbus caufe, from a thorough knowledge of the fubjed, and profound meditation on it. They 6 who 14 Reduced to three iparate'y explained. Parti. O R A T invention. w}in would direct ftudents of oratory to any other w'"'v fources of argumentation, only delude them ; and by attempting to render rhetoric too perfeft an art, they render it, in truth, a trifling and childiflx ftudy.” Of externa] H- external topics. When the orator reafona from topics, e;e- topics as do not arife from his fubject, but from nerally call-things of a different nature, thefe are called external. ed tejhmo- They are all taken from authorities, and are by one general name called Tejlimanies. Now a tellimony may be exprefled by writing, fpeeeh, or any other lign proper to declare a perfon’s mind. And all teftimonies may be diftinguifhed into two forts, divine and human. A divine teftimony, when certainly known to be fuch, is inconteftable, and admits of no debate, but fliould be accpiiefced in without hefitation. Indeed the ancient Greeks and Romans efteemed the pretended oracles of their deities, the anfwers of their augurs, and the like fallacies, di¬ vine teftimonies : but with us no one can be ignorant of their true notion, though they do not fo dire&ly come under our prefent confideration. Human tefli- monies, confidered as furniihing the orator with ar¬ guments, may be reduced to three heads; ’writings, ’witnejfes, and contrails. 1. By Writings, here-, are to be underflood written ) i laws, wills, or other legal inflruments, exprefled and f -paiat^y' cotlveyecl manner. And it is not fo much the force and validity of fuch teltimonies, coniidered in themfelves, that is here intended, as the occalion of difpute which may at any time arife concerning their true defign and import, when produced in proof upon either fide of a controverfy. And thefe are five ; Am¬ biguity, Difagrcement between the words and inten¬ tion, Contrariety, Reafoning, and Interpretation. A writing is then faid to he ambiguous, when it is capable of two or more fenfes, which makes the wri¬ ter’s defign uncertain. Now ambiguity may arife ei¬ ther from Angle words, or the conftru&ion of fenten- ces. From Angle words; as when either the fenfe of •t word, or the application of it, is doubtful. As, fliould it be q-:eftioned, whether ready money ought to be included under the appellation of chattels left by a will ; or, if a teftator bequeath a certain legacy to his nephew Thomas, and he has two nephews of that name. But ambiguity is alfo fometimes occafioned from the conftruAion of a fentence ; as when feveral things or perfons having been already mentioned, it is doubtful to which of them that which follows ought to be referred. For example, a perfon writes thus in his will : ‘ Let my heir give as a legacy to Titius an horfc out of my liable, which he plea^es., Here it may be queflioned, whether the word he refers to the heir or to Titius ; and confequently, whether the heir be allowed to give Titius which horfe he pleafes, or Titius may choofe which he likes heft. Now as to controveiA.es of this kind, in the firft cn.fe above-men¬ tioned, the paity who claims the chattels may plead, that all moveable goods come under that name, and therefore that he has a right to the money. This he will endeavour to prove from fome in-itances where the w ord has been fo tifed. The bufinefs of the oppo- fite party is to refute thi", by fhowing that money is not there included. And if either Ade produce pre¬ cedents in his favour, the other may endeavour to fhow that the cafes are not parallel. As to the fecond cafe, Vok. Xlli. Part I. O R Y. 377 irifing from an ambiguity in the itatne, if any other Invention • words or expreflions in the will feem to countenance v-"'' either of the claimants, he will ndt fail to interpret them to his advantage. So likewife, if any thing faid by the teftator, in his lifetime, or any regard ftiown to either of thefe nephews more than the other, may help to determine which of them was intended, a pro¬ per ufe may be made of it. And the fame may be faid with regard to the third cafe. In which the legatee may reafon likewife from the common ufe oflanguage* and fhow that in fuch expreflions it is ufual to make the reference to the laft or next antecedent; and from theace plead, that it was the deftgn of the teftator to give him the optisn. But in anfwer to this, it may be faid, that allowing it to be very often fo, yet in this inftance it fettns more eafy and natural to repeat the verb give after pleafes, and fo to fupply the fentence, •which he pleafes to give him, referring it to the heir, than to bring in the verb choofe, which w^s not in the fentence before ; and fo, by fupplying the fenfe, •which he pleafes to choofe, to give the option to Titius. But where controverfies of this kind arife from a law, re- courfe may be had to other laws where the fame thing has been exprefled with greater clearnefs; which may help to determine the fenfe of the paflage in difpute. A fecond controverfy from writings is, when one party adheres to the words, and the other to what he aflerts was the writer’s intention. Now he who op- pofes the literal fenfe, either contends, that what he himfelf ofters is the f/mple and plain meaning of the writing, or that it muft be fo underftood in the parti¬ cular cafe in difpute. An inftance of the former is this, as we find it in Cicero. A perfon who died without children, but left a widow, had made this provifion in his will; “ If I have a fon born to me, he Audi be my heir.” And a little after : “ If my fon die before he comes of age, let Curius be my heir.” There is no fon born : Curius therefore fues for the eftate, and pleads the intention of the teftator, who defigned him for his heir, if he fhould have no fon who arrived at age; and fays, there can be no reafon to fuppofe he did not intend the farce perfon for his heir if he had no fon, as if he /hould have one who af¬ terwards died in his minority. But the heir at law in¬ fills upon the words of the will ; which, as he fays, require, that firft a fon fhould be born, and afterwards die under age, before Curius can fucceed to the inhe¬ ritance ; and there being no fon, a fubftituted heir, as Curius was, can have no claim where the firft heir does not exift, from whom he derives his pretenfion, and was to fucceed by the appointment of the will.-I Of the latter cafe, rhetoricians give this example s “ It was forbidden by a law to open the city-gates in the night.. A certain perfon notwithftanding, in time of war, did open them in the night, and let in fome auxiliary troops, to prevent their being cut off by the enemy, who was polled near the town.” Afterwards, when the war was pver, this perfon is arraigned, and tried for his life on account of this aftion. Now, in fuch a cafe, the profecutor founds his charge upon the exprefs words of the law ; and pleads, that no fufff- t ient i eafon can be afligned for going contrary to the letter of it, which would be to make a new law, and not to execute one already made. The defendant, on the other hand, alleges, T hat the fact he is charged 3 B * * with 3?S Jnventior. ORATORY. with cannot, however, come within the intention of the law; fince he either could not, or ought not, to have coir,plied with the letter of it in that particular cafe, which muft therefore neceffarily be fuppofed to have been excepted in the defign of that law when it was made. But to this the profecutor may reply, That all fuch exceptions as are intended by any law, are ufually expreffed in it : and iniiances may be brought of particular exceptions expreffed in fome laws ; and if there be any fuch exception in the law under debate, it fhould efpecially be mentioned. He may further add. That to admit of exceptions not ex¬ preffed in the law itfelf, is to enervate the force of all laws, by explaining them away, and in effeft to ren¬ der them ufflefs. And this he may further corroborate, by comparing the law under debate with others, and confidering its nature and importance, and how far the public intereft ot the ftate is concerned in the due and regular execution of it ; from whence he may infer, that ihould exceptions be admitted in other laws of lefs confeqnence, yet, however, they ought not in this. jLallly, he may confider the reafon alleged by the de¬ fendant, on which he founds his plea, and fhow there was not that neceffity of violating the law in the pre- fent cafe, as is pretended. And this is often the more requifite, becaufe the party who difputes againll the words of the law, always endeavours to fupport his allegations from the equity of the cafe. If, therefore, this plea can be enervated, the main fupport of the defendant’s caufe is removed. For as the former ar¬ guments are defigned to prevail with the judge, to de¬ termine the matter on this fide the queftion from the nature of the cafe ; fo the intention of this argument is to induce him to it, from the weaknefs of the de¬ fence made by the oppofite party. But the defendant will, on the contrary, ufe fuch arguments as may beft demonftrate the equity of his caufe, and endeavour to vindicate the iaft from his good defign and intention in doing it. lie will fay, That the laws have allotted puniflunents for the commiffion of fuch fadfs as are evil in themfelves, or prejudicial to others ; neither of which can be charged upon the aftion for which he is aceuftd : That no law can be rightly executed, if more regard be had to the words and fyllables of the writing, than to the intention of the legiflator. To which purpofe, he may allege that dire&ion of the law itfelf, which fays, “ The law ought not to he too ri,- goroufly interpreted, nor the words of it ftrained ; but the true intention and defign of each part of it duly confidered.” As alfo that faying of Cicero, “ What law may not be weakened and deftroyed, if we bend the fenfe to the words, and do not regard the defign and view of the legiflator ?” Hence he may take occa- fion to complain of the hardfhip of fuch a procedure, that no difference Ihould be made between an audacious and wilful crime, and an honell or neceffary adiion, which might happen to difagree with the letter vf the law, though not with the intent of it. And as it was obferved before to be of confiderable fervice to the ac- cufer, if he could remove the defendant’s plea of equity ; fo it will be of equal advantage to the defen¬ dant, if he can fix upon any words in the law, which may in the leaft feem to countenance his cafe, fince this will take eff the main force of the charge. The third controverfy of this kind is, when two writings happen to clalh with each other, or at leaft Part F. feem to do fo. Of this Henr.ogenes gives the fol- Invention, lowing inftance. One law enjoins: “ He who con-‘—’'""v tinues alone in a flffp during a tempeft, (hall have the property of the (hip.” Another law fays, “ A diiin- herited fon (hall enjoy no part of his father’s eftate.’* Now a fon, who had been difinherited by his father, happens to be in his father’s (hip in a tempeft, and continues there alone, when every one elfe had de¬ ferred it. He claims the (hip by the former of thefe laws, and his brother tries his right with him by the latter. In fuch cafes, therefore, it may firft be con¬ fidered, “ Whether the two laws can be reconciled. And if that cannot be done, then, Which of them ap¬ pears more equitable. Alfo, Whether one he po(i» live, and the other negative : becaufe prohibitions are a fort of exceptions to pofitive injun&ions. Or, If one be a general law, and the other more particular, and come nearer to the matter in queftion. Likewife, Which was lad made : fince former laws are often abrogated, either wholly or in part, by fubfequent laws ; or at leaft were defigned to be fo. Laftly, it may be obferved, Whether one of the laws be not plain and exprefs ; and the other more dubious, or has any ambiguity in it. All, or any of which things, that party will not omit to improve for his advantage whofe intereft is concerned in it. The fourth controverfy is reafon'wg. As when fomething, not exprefsly provided for by a law, is in¬ ferred by a fimilitude, or parity of reafon, from what is contained in it. Quintilian mentions this inftance of it. “ There was a law made at Tarentum, to pro¬ hibit the exportation of wool; but a certain perfon exports (beep.” In this cafe, the profecutor may firft compare the thing which occafions the charge, with the words of the law, and (how their agreement, and how unneceffary it was that particular thing fnould have been exprefsly mentioned in the law, fince it is plainly contained in it, or at leaft an evident confe- quence from it. He may then plead, that many things of a like nature are omitted in other laws for the fame reafon. And, laftly, he may urge the rea- fonablenefs and equity of the procedure. The de¬ fendant, on the other hand, will endeavour to (howi the deficiency of the reafoning, and the difference lie- tween the two cafes. He will infift upon the pla'n and exprefs words of the law, and fet forth the ill tendency of fuch inferences and conclufions drawn from iimilitudes and coniparifons, fince there is fcarce any thing but in fome refpevft may bear a refemblance to another. The laft controverfy under this head is interpreta¬ tion, in which the difpute turns upon the true mean¬ ing and explication of the law in reference to that particular cafe. We have the following inftance of this in the Pandedts : “ A man who had two fons, both under age, fubftitutes Titius as heir to him who (hould die laft, provided both of them died in their minority. They both periflt together at fea before they came to age. Here arifes a doubt, whether the fubftitution can take place, or whether the inheiitance devolves to the heir at law.” The latter pleads, 1’hat as neither of them can be faid to have died laft, the fubftitution cannot take place ^ which was fufpended, upon the condition that one died after the other. But to this it may be faid, It was the intention of the teftator, that if both died in their nonage, Titius (houlfl Pure I* ORA’l invention, fhould faceted t» the inheritance; and therefore it makes no difference whether they uled together, or one after the other: and fo the law determines it. 2. The fecond head of external arguments are IVit- nejfcs. Thefe may either give their evidence, when ab- fent, in wiiting fubferibed with their name ; or pre- fent, by word of mouth. And what both of them tellify, may either be from hearfay ; or what they faw themftlves, and were prefent at the time it was done. As the weight of the evidence may be thought greater or lefs on each of thefe accounts, either party will make fuch ufe of it as he finds for his advantage. The chara&ers of the witneffes are alfo to be confi- dered ; and if any thing be found in their lives or be¬ haviour that is juftly exceptionable, to invalidate their evidence, it ought not to be omitted. And how they are affetfed to the contending parties, or either of them, may deferve confiderarion ; for fome allowances may be judged reafonable in cafe of friendfhip, or enmity, where there is no room for any other exception. But regard fhould chiefly be had to what they teltify, and how far the caufe is affe&ed by it. Cicero is very large upon molt of thefe heads in his defence of Marcus Fon- tcius, with a defign to weaken the evidence of the Cauls again lb him. And where witneiTes are produ¬ ced on one fide only, as orators fometimes attempt to leiTen the credit of this kind of proof, by pleading that witnefies are liable to be corrupted, or biaffed by fome prevailing intereft or pafiion, to which argu¬ ments taken from the nature and circumftances of things are not fubjeft ; it may be anfvvered on the other hand, that fophiftical arguments and falfe co¬ lourings are not expofed to infamy or punifhment, whereas witnefi’es are reft rained by fhame and penalties, nor would the lawrcquire them if they were notneceflary. 3. The third and lafb head of external arguments are ContraQs ; which may be either public or private. By public are meant the tranfadftions between dilferent ilates, as leagues, alliances, and the like ; which de¬ pend on the laws of nations, and come more properly under deli1 erative difeourfes, to which we fhall refer them. Tbofe are called private, which relate to lefler bodies or focieties of men, and iingle perfons ; and may be either written or verbal. And it is not fo much the true meaning and purport of them that is here confidered, as their force and obligation. And, as the Roman law declares, “ Nothing can be more agreeable to human faith, than that perions Ihould Band to their agreements.” Therefore, in controver- fies of this k nd, the party whofe inttreft it is that the contract fhould be maintained, will plead, that fuch co¬ venants have the force of private laws, and ought re- ligioufly to be obftrved, tince the common affairs of mankind are tranfadted in that manner; and therefore to violate them, is to deflroy all commerce and fociety among men. On the other fide it may be faid, that juftice and equity are chiefly to be regarded, which are immutable; and betides, that the pu lie laws are the common rule to determine fuch differences, which are deiigned to redrefs thofe who are aggrieved. And, in¬ deed, where a compact has bt en obtained by force or fraud, it is in itfclf void, and has no effect either in law or reafon. But on the other hand, the Roman lawyers feem to have very rightly determined, that ail fueh obligations as are founded on natural equity, ' O R Y. . 379 though not binding by national laws, and arc therefore Invention, called nuda patia, ought, however, in honour and con-' v" l J fcience to be performed. III. Of the State of a Controverjy. The ancients, of thc\hte obferving that the principal queltion or point ot dif-ofa con-ro- pute in all controverlies might be referred to fome p:\r-ve'fy, or ticular head, reduced thofe heads to a certain number, ^er“’eai”^r that both the nature of the queftion might by thatthep^nci'-^ means be better known, and the arguments fuited to pal q ;eftion it be difeovered with greater eafe. And thefe heads111 d!ft>ute they call fates. to *°me; By the ftate of a controverfy, then, we are to under-{^4 for fland the principal point in difpute between contend-i-reater ing parties, upon the proof ot which the whole caufeeaN of ar« or controverfy depends. We find it exprefled by feve-&umeilt> ral other names in ancient writers : as, the conjlitu- tion of the caufe, the genera! head, and the chief quefion. And as this is the principal thing to be attended to in every i'uch difeourfe ; it is what firft requires the conlideration of the fpeaker, and fhould be well fixed and digefted in his mind, before he proceeds to look for arguments proper to fupport it. Thus Anthony, the Roman orator, fpeaking of his own method in his pleading, fays: “ When I underftand the nature of the caufe, and begin to confider it, the firfl thing I endeavour to do is, to fettle with myfelf what that is to which all my difconrfe relating to the matter in dif¬ pute ought to be referred : then 1 diligently attend to theie other two things, How to recommend myfelf, or thofe for whom I plead, to the good efteem of my hearers ; and how to influence their minds, as may belt fuit my deiign.” This way of proceeding appears very agreeable to reafon and prudeace. For what can be more abfurd, than for a perfon to attempt the proof of any thing, before he has well fettled in his own mind a clear and diftind notion what the thing is which he would endeavour to prove ? Quintilian de- feribes it to be, ‘ That kind of queftion which arifes from the ffrit conflidft of caufes.’ In judicial cafes, it immediately follows upon the charge of the plaintiff, and plea of the defendant. Our common law ex- prefles it by one word, namely the if/e. Which in¬ terpreters explain, by deferibing it to be, “ That point of matter depending in fuit, whereupon the par¬ ties join, and put their caufe to ti.e trial.” Examples will further help to illuftrate this, and render it more evident. In the caufe of Milo, the charge of the Clo- dian party is, Mi/o killed Olodius. Milo’s plea or de¬ fence, 1 killed him, but jufly. From hence arifes this grand queftion, or ftate of the caufe, Whether it was lawful for Mdo to kill Clodius P And that Clodius was lawfully killed by Milo, is what Cicero in his defence of Milo principally endeavours to prove. This is the main fubjed of that fine and beautiful oration. f he whole of his difeourfe is to be confidered as centering at latl in this one point. Whatever different matters are occafionally mentioned, will, if clofely attended to, be found to have been introduced fome wav or other the better to fupport and carry on this deiign. Now in fuch cafes, where the fad is not denied, but fomething is offered in its defence, the ftate of the caule is taken from the defendant’s plea, who is obli¬ ged to make it good: As in the inltance here given, the chief point in difpute was the lawfulnefs of Milo’s adion, which it was Cicero s bufinefs to demomirate. 3^3 But or. ORATORY. Part li But when dife Jefenuant denies the fa&, the ftate of the caufe arifes from the accufation ; the proof of which then lies upon the plaintiff, and not, as in the former cafe, upon the defendant. So in the caufe of .Rofcius, the charge made againft him is, That lx killed his father. But he denies the faff. The grand queflion therefore to be argued is, Whether or not he killed his father ? The proof of this lay upon his ac- cufers. And Cicero’s defign in his defence of him is to Qiovv, that they had not made good their charge. But it fometimes happens, that the defendant neither iibfolutely denies the fadt, nor attempts to juftify it ; but only endeavours to qualify it, by denying that it is a crime of that nature, or deferves that name, by vhich it is expreffed in the charge. We have an ex¬ ample of this propofed by Cicero : “ A perfon is ac- cufed of facrilege, for taking a thing, that was facred, out of a private houfe. He owns the fadf, but denies it to be facrilege; linee it was committed in a private houfe, and not in a temple.” Hence this queftion arifes, Whether to take a /cured thing out of a private h'jufe, is to he deemed facrilege, or only fimple theft ? It lies upon the accufer to prove what the other denies; and therefore the ftate of the caufe is here alfo, as well as in the preceding cafe, taken from the indict¬ ment. But befides the principal queftion, there awe other fubordinate queltions, which follow upon it in the courfe of a difpute, and Ihould be carefully diftin- guifhed from it. Particularly that which arifes from the reafon, or argument, which is brought in preof of the principal quellion. For the principal queftion itfelf proves nothing, but is the thing to be proved, and becomes at laft the conclufion of the difeourfe. Thus, in the caufe of Milo, his argument is, / kill¬ ed Clodius jufly, becaufe he ajfajfmated me. Unlefs the Clodian party be fuppofed to deny this, they give up their caufe. From hence therefore this fubordinate queilion follows, Whether Clodius a/fajfinated Milo ? Now Cicero fpends much time in the proof of this, as the hinge on which the firft queftion, and confe- quently the whole caufe, depended. For if this was once made to appear, the lawfulnefs of Milo’s killing Clodtus, which was the grand queftion or thing to be proved, might be inferred as an allowed confequeace from it. This will be evident, by throwing Milo’s argument, as ufed by Cicero, into the form of a fyl- logifm. Sin ajfajfin is lawfully killed: Clodius was an ajfajfin: Therefore he was lawfully killed by Miloy whom he ajfajfmated. If the minor propofition of this fyllogifm was granted, no one would deny the conclufion : for the Roman law allowed of felf-defence. But as Cicero was very fenfible- this would not be admitted, fo he takes much pains to bring the court into the belief of it. Now where the argument brought in defence of the fecond queftion is contefted, or the orator fuppofes that it may be fo, and therefore fupports that with another argument, this occafions a third queftion confequent upon the former; and in like manner he may proceed to a fourth. But be they more or fewer, they are to be conlidered but as cue chain of lubordinate queftiona dependent upon tnc firft. And though each of them Invention, has its particular ftate, yet none of thefe is what rhe- toricians call The fate of the Caufe, which is to he un« derftood only of the principal queftion. And if, as it frequently happens, the firft or principal queftion is itfelf d iredlly proved from more than one argument ; this makes ho other difference, but that each of thefe arguments, fo far as they are followed by others to fupport them, become a diftind feries of fubordinate queftions, all dependent upon the firft. As when Ci¬ cero endeavours to prove, that Rofcius did not kill h'.s father, from two reafons or arguments: Becaufe he had neither any caufe to move him to j'uch a barbarous ac¬ tion, nor any opportunity for it. Moreover, beftdes thefe fubordinate queftions, there are alfo incidental ones often introduced, which have fome reference to the principal queftion, and contri¬ bute towards the proof of it, though they are not ne- ceffarily conne&ed with it, or dependent upon it. And each of thefe alfo has its ftate, though different from that of the caufe. For ’every queftion, or poi^t of controverfy, muft be Hated, before it can be made the fubjeft of deputation. And it is for this reafon, that every new argument advanced by an orator is called a quejlion ; becaufe it is conftdered as a frefh matter of controverfy. In Cicero’s defence of Milo, we meet with feveral of this fort of queftions, occafioned by fome afperfions which had been thrown out by the Clodian party to the prejudice of Milo. As, “ That he was unworthy to fee the light, who owned he had killed a man For Milo before his trial had openly confeffed he killed Clodius. So likewife, “ That the fenate had declared the killing of Clodius was an ille¬ gal aftion.” And further, “ That Pompey, by ma¬ king a new law to fettle the manner of Milo’s trial, had given his judgment againft Milo.” Now to each of’thefe Cicero replies, before he proceeds to the prin¬ cipal queftion. And therefore, though the queftion, in which the rtate of a controverfy confifts, is faid by Quintilian to arife from “ the firft conflict of caufes,’* yet we find by this inftance of Cicero, that it is not always the firft: queftion in order, upon which the ora¬ tor treats. But it fometimes happens, that the fame caufe or controverfy contains in it more than one ftate. Thus injudicial caufes, every diftinCl charge occafions a new ' ftate. All Cicero’s orations againft Verres relate to one caufe, founded upon a law of the Romans againft. unjuft exa&ions made by their governors of provinces upon the inhabitants; but as that profecution is made up of as many charges as there are orations, every charge, or indi&ment, has its different itate. So like¬ wife his oration in defence of Ccelius has two ftates, in anfvvtr to a double charge mad^againfl: him by hia adverfaries : one, “ for borrowing money of Clodia, in order to bribe certain (laves to kill a foreign ambaf- fadorand the other, “ for an attempt afterward to poifon Clodia herfelf.” Befides which, there were fe¬ veral other matters of a lefs heinous nature, which had been thrown upon him by his accufers, with a defign, very likely, to render the two principal charges more credible; to which Cicero firlt replies, in the fame manner as in his defence of Milo. Though all the examples we have hitherto brought to iiluftrate this fubjedt have been taken from judicial cafes;. Parr T. ORA invention.cafes; yet not only thefe, but very frequently dif- -v—^ courfes of the deliberative: kmJ, and fomctimea thofe of the demonftrative, are managed in a controverfial way. And all controverfies have their ftate. And therefore Quintilian very juftly obferves, that “ ftates belong both to general ani particular queftions ; and to all forts of caufes, demonftrative, deliberative, and judicial.” In Cicero’s oration for the Manilian law, this is the main point in difpute between him and thofe who oppofed that law : “ Whether Pompey was the fitteft perfon to be intmfted with the management of the war againft Mithridates ?” This is a fubjeft of the deliberative kind. And of the fame nature was that debate in the fenate concerning the demolition of Carthage. For the matter in difpute between Cato, who argued for it, and thofe who were of the contrary opinion, feems to have been this: “Whether it was for the intereft of the Romans to demolifh Carthage ?” And fo likewife in thofe two fine orations of Cato and Caefar, given us by Salluft, relating to the confpira- tors with Catiline, who were then in cuftody, the con- troverfy turns upon this : “ Whether thofe prifoners fhould be puniftied with death, or perpetual imprifon- ment ?” Examples of the demonftrative kind are not fo common ; but Cicero's oration concerning the ‘ An fwers of the foothfayers,’ may afford us an inftance of it. Several prodigies had lately happened at Rome ; upon which the foothfayers being confulted, affigned this as the reafon of them, Becaufe fome places confe- crated to the gods had been afterwards converted to civil ufes. Clodius charged this upon Cicero; whofe houfe was rebuilt at the public expence, after it had been demolilhed by Clodius, and the ground confe- crated to the goddefs Liberty. C'cero in this ora¬ tion retorts the charge ; and ftiows that the prodigies did not refpe& him, but Clodius. So that the queftion in difpute was, “ To which of the two thofe prodi¬ gies related ?” This oration does not appear to have been fpoken in a judicial way, and muft therefore be¬ long to the demonftrative kind. His invedtive againft Fife is likewife much of the fame nature, wherein he compares his own behaviour and conduct with that of Pifo. As to the number of thefe ftates, both Cicero and Quintilian reduce them to three. “ We muft (fays Quintilian) agree with thofe, whofe authority Cicero follows, who tells ust that three things may be inqui¬ red into in all difputes : Whether a thing is ; what it is ; and how it is. And thi* is the method which na¬ ture preferibes. For in the firft place, it is neceffary the thing Ihould exift about which the difpute is: be¬ caufe no judgment can be made either of its nature or quality till its exiftence be manifeft ; which is there¬ fore the firft queftion. But though it be manifeft that a thing is, it does not prefently appear what it is ; and when this is known, the quality yet remains : and af¬ ter thefe three are fettled, no further inquiry is necef¬ fary.” Now the firft ©f thefe three ftates is called the conjeSural Jiate ; as if it be inquired, “ Whether one perfon killed another ?” This always follows upon the denial of a faft, by one of the parties ; as was the cafe of Rofcius. And it receives its name from hence, that the judge is left, as it were, to conje&ure, whether the fa& was really committed or not, from the evi¬ dence produced on the other fide. The fecond is call- TORY.' 381 ed the definitive Jiate, when the fa& is not denied ; but ^Jent‘ori'. the difpute turns upon the nature of it, and what name it is proper to give ic : as in that example of Cicero, “ Whether to take a facred thing out of a private houfe be theft, or facrilege ?” For in this cafe it is neceffary to fettle the diftinsft notion of thofe two crimes, and fhow their difference. The third is called the fiate of quality; when the contending parties are agreed both as to the fa£t, and the nature of it; but the difpute is, “ Whether it be juft ©r unjuft, profit¬ able or unprofitable, and the like ;” as in the caufe of Milo. From what has been faid upon this fnbjedt, the ufe of it may in a good meafure appear. For whoever en¬ gages in a controverfy, ought in the firft place to con- lider with himfelf the main queftion in difpute, to fix it well in his mind, and keep it conftantly in his view ; without which he wall be very liable to ramble from the point, and bewilder both himfelf and his hearers. And it is no lefs the bufinefsof the hearers principally to attend to this ; by which means they will be help¬ ed to diftinguifh and feparate from the principal que- llion what is only incidental, and to. obferve how far the principal queftion is affe&ed by it ; to perceive what is offered in proof, and what is only brought in for iliuftration ; not to be milled by digreffions, but to difeern when the fpeaker goes oft’ from his fubjedl, and when he returns to it again ; and, in a word, to ac¬ company him through the whole difeourfe, and carry with them the principal chain of reafoning upon which the caufe depends, fo as to judge upon the whole, whether he has made out his point, and the conclufion follows from the premifes. x charged. The fubjedd of them is always fomething paft. And the end propofed by them Cicero calls fuited to equity, or right and equity; the former of which arifesthem. from the laws of the country, and the latter from rea¬ fon and the nature of things. For at Rome the prs- tors had a court of equity', and were empowered, iu many cafes relating to property, to relax the rigour of the written laws. But as this fubjedd is very copious, and caufes may arife from a great variety of things, writers have reduced them to three heads, which they call fates, to fome one of which all judicial proceed¬ ings may be referred ; namely, vuhelber a thing is, what it is, or how it is. By the fate of a caufe therefore ig meant the principal queftion in difpute, upon which the whole affair depends. Which, if it ftops in the firft inquiry, and the defendant denies the faft, the ftate is called conjectural; but if the fas hatred of Milo, that he de¬ fined his death ; and from thence infers, that he was the aggreffor the combat between them, wherein Clodius was killed. This is what he principally endea¬ vours to prove, and comes properly under this tdate . for Milo owned that he killed him, but alleged that he did it in his own defence. So that in regard to this point, Which of them afiaulted the other ? the charge was mutual The profpea of advantage may alfo be alleged to the fame purpofe- Hence it is faid of L. Caffius, that whenever he fat as judge in a cafe of murder, he ufed to advife and move the court to exa¬ mine to whom the advantage arofe from the oeath of the deceafed. And Cicero puts this to Anthony con¬ cerning the death of Csefar. “ If any one (fays he) fhould bring you upon trial, and ufe that faying of Caf¬ fius, Cui bono? i Who got by it ?’ look to it, T hefeech you, that you are not confounded.’' . lo thefe argu¬ ments may be added, hope of impunity, taken either from the circiimfiances of the accufed perfon, or of him who fuffered the injury. lor perfons, who have the advantage of interefi, friends, power, or money, are apt to think they may eafily efcape ; as likewife fuch who have formerly committed other crimes with impu¬ nity. Thus Cicero reprefents Clodius as hardened in vice, and above all the reftraint of laws, from having fo often efcaped punifhment upon committing the higheft crimes. On the contrary, fuch a confidence is fo retimes raifed from the condition of the injured party, if he is indigent, obfeure, timorous, or defti- tute of friends : much more if he has an ill reputa¬ tion, or is loaded with popular hatred and refentment. It was this prefumption of the obfeurity of Rofcius, who lived in the country, and his want of interefi: yit Rome which encouraged his accufers to charge him with killing his father, as Cicero fiiows in his defence of him. Laftly, the temper of a perfon, his views, and manner of life, are confiderations of great mo¬ ment in this matter For perfons of bad morals, and fuch as are addi&ed to vice, are eafily thought ca¬ pable of committing any wickedncfs.. Hence Salluft argues from the evil difpofition and vicious life of Ca- tifine, that he affe&ed to raife himfelf upon the ruins of his country.—The fecond head is the power of do- ini; a thing : and there are three things which relate to this, the place, the time, and opportunity.^ As if a crime is faid to have been committed in a private place, where no other perfon was prefent; or in the night ; or when the injured perfon was unable to provide for his defence. Under this head may likewife be brought in the circumftances of the perfons ; as if the accufed perfon v/as fironger, and fo able to overpower the other ; or more adlive, and fo. could eafily make his efcape. Cicero makes great ufe of this topic in the cafe of Milo, and fhows, that Clodius had all the advan¬ tages of place} time, and opportunity, to execute his de- O R Y. Part I. fign of killing him. The third head comprehends Invention. ihefegns and circumftances which either preceded, ac* companied, or followed, the commifiion of the fad. So threats, or the accufed perfon being feen at or near the place before the fad was committed, are circumftances that may probably precede murder; fighting, crying out, bloodlhed, are fuch as accompany it ; palenefs, trembling, inconfiftent anfwers, helitation, or falter¬ ing of the fpeech, fomething found upon the perfon accufed which belonged to the deceafed, are fuch as follow it. Thus Cicero proves, that Clodius had threat¬ ened the death of Milo, and given out that he fhould not live above three days at the fartheft—Thefe argu¬ ments, taken from conjedures, are called prefumptions, which, though they do not diredly prove that the ac¬ cufed perfon committed the fad with which he is charged ; yet when laid together, they appeared very ftrong, fentence by the Roman law might fometimes be given upon them, to convid him. Thefe are the topic? from which the profecutor takes his arguments. Now the bufinefs of the defen¬ dant is to invalidate thefe. Therefore fuch as are brought from the will, he either endeavours to fhow are not true, or fo weak as to merit very little regard. And he refutes thofe taken from the power, by proving that he wanted either opportunity or ability : as, it he can fhow, that neither the place nor time infilled on was at all proper ; or that he was then in another place. In like manner he will endeavour to confute the circumjlances, if they cannot be diredly denied, by fliowing that they are not fuch as do neceflarily ac¬ company the fad, but might have proceeded from other caufes, though nothing of what is alleged had been committed ; and it will be of great fervice to affign fome other probable caufe. But fometimes the defendant does not only deny that he did the fail, but charges it upon another. Thus Cicero, in his oration for Rofcius, nor only defends him fiom each of thefe three heads, but likewife charges the fad upon his accufers. 2. The definitive ftate, which is principally con¬ cerned in defining and fixing the name proper to the fad: though orators feidom make ufe of exad defini¬ tions, but commonly choofe larger deferiptions, taken from various propertiesof the fubjed or thing deferibed. The heads of argument in this ftate are much the fame to both parties. For each of them defines the fad his own way, and endeavours to refute the other’s definition. We may illuftrate this by an example from Qriintilian : “ A peifon is accnfed of facrilege, for ftealing money out of a temple, which belonged to a private perfon.” The fad is owned; but the que- ftion is, Whether it be properly facrilege P The profe¬ cutor calls it fo, becaufe it was taken out of a temple. But fince the money belonged to a private perfon, the defendant denies it to be facrilege, and fays it is only fimple theft. Now the reafon why the defendant ufes this plea, and infifts upon the diftindion, is, be¬ caufe by the Roman law the penalty of theft was only four times the value of what was ftolen ; whereas fa¬ crilege was punifhed with death. The profecutor then forms his definition agreeable to his charge, and fays, “ To fteal any thing out of a facred place is facrilege.” But the defendant excepts againft this definition. Part I. v) R A Invention.definition, as defeaive ; and urges, that It does not w-v ' amount to facrilege, unlefs the thing ftolen was like- wife facred. And this cafe might once, perhaps,have been a matt general, who was anlwera'fte :or his own orders, and not thole who were obliged to execute them ; and there.ore, to ,3 C 2 give * / 388 ORATORY. Part I. Invention. givc Up thic youn^ rK'b!em"'.n would be to punifh one v perfon for the fault of another. Laftly, a faft is fometimes rather excufed than de¬ fended, by pleading that it was not done designedly, or with any ill intent. This is called conrejfion ; and cenfifts of two parts, npology and ir,treaty 'The former reprefents the matter as the tffecl of inadvertency, chance, or necefficy. Ariftotle gives us an example of inadvertency or imprudence in a woman at Athens, who gave a young man a love-potion, which killed him ; for which fire was tried, but acquitted : though afterwards this was made criminal by the Roman law. The cafe of Adraftus, as related by Herodotus, is an inftance of chance; who beinr intrufted by Croefus with the care of his fon, ns they were hunting, killed him accidentally with a javelin which he threw at a boar. It is neceffity, when a perfon excufes his making a default, from ftrefs of weather, ficknefs, or the like. Thus Cicero pleaded his illnefs, contracted by he fatigue of a long journey, as an excufe for not appearing in the fenate upon the fummons of Mark Antony, who threatened to oblige him to it by pulling his houfe down. But what the defendant here attri¬ butes to.inadvertency, chance, or neceflity, the oppo- fite party will attribute to defign, negligence, or fome other culpable reafon; and reprefent it as a matter in¬ jurious to the public to introduce fuch precedents ; and alfo produce inftances, if that can be done, where the like excufes have not been admitted. On the ether hand, the defendant will infift on his innocence, and (how the hardfhip and feverity of judging mens aftions rather by the event, than from the intention : that fuch a procedure makes no difference between the innocent and the guilty ; but muff neceffarily in¬ volve many honeft men in ruin and deftru&ion, dif- courage all virtuous and generous defigns, and turn greatly to the prejudice of human fociety. He will alfo confider the inftances alleged by the accufer, and fhow the difference between them and his own cafe. And, laftly, he will have recourfe to intreaty, or a fubmiffive addref? to the equity and clemency of the court, or party offended, -for pardon; as Cicero has done in his oration to Caefar, in favour of Tiga- rius. Chap.V. Of the Character and Addrefs of an Orator. 3 A Propriety Having confideted and explained the firft part of of manners invention, which furnifhes the orator with fuch argu- neceflary inments as are ueceflary for the proof of his fubjeeft, bmh^wbh we are next to ihovv what are the proper means tocon- refj edi: to ciliate the minds of his hearers ; to gain their affec- charader tion; and to recommend both himfelf, and what he andaddiefs fiys, to their good opinion and efteem. For the parts of invention are commonly thus diftinguiftied; that the firft refpefts the fubjeQ of the difeourfe, the fecond the . fpeaker, and the third the hearers. Now the fecond of thefe, what we have at prefent to explain, is by Quintilian called a propriety of manners. And in or¬ der to exprefs this, it is neceftary, as he tells us, “ that every thing appear eafy and natural, and the difpoli- tion or the tpeaker be difeovered by his words.” We may form an eafy conception of this from the con duff of fuch perfons as are mod nearly concerned ineach others welfare. As when relations or friends converfe Invention together upon any affairs of importance, the temper v-— and difpolition of the fpenker plainly ihows itfelf by his words and manner of nddrefs. And what nature here direffs to without colouring or difguife, the ora¬ tor is to endeavour to perform by his art. Though indeed, if what a perfon fays be inconfxftent with his ufuai conduct and behaviour at other times, he can¬ not expeff it ftiould gain much credit, or make any deep itrpreftion upon his hearers : which may be one reafon why the ancient rhetoricians make it fo necef- fary a qualification in an orator, that he be a good man ; fince he fhould always be confident with him¬ felf, and, as we fay, talk in charafler. And there¬ fore it is highly requifite, that he ihould not only gain the fkiil of affuming thofe qualities which the nature and circumftances oi his difeourfe require him to ex¬ prefs ; but likewife, that he fhould ufe his utmoft en¬ deavours to get the real habits implanted in his mind. For as by this means they will be always expreffed with greater eafe and facility fo, by appearing con* ftantly in the courle of his life, they will have more weight and influence upon particular occaflons. Now there are four qualities, more efpecially fuited to the character of an orator, which ihould always ap>- pear in his difeourfes, in order to render what he fays acceptable to his hearers ; and thefe are, auifdom, in- tggriiy, benevolence, and modify. 1. Wifdom is neceffary; becaufe we eafily give into thofe whom we efteem wifer and more knowing than ourfelves. Knowledge is very agreeable and pleafant to all, but few make very great improvements in it ; either by reafon they are employed in other neceffary affairs, and the mind of man cannot attend to many things at once; or becaufe the way to knowledge at firft is hard and difficult, fo that perfons either do not care to enter upon the purfuitof it, or, if they do, they are many times foon difeouraged, and drop it, for want of fufficient refolution to furmount its difficulties. Such, therefore, as either cannot, or do not care to give themfelves the trouble of examining into things themfeives, muft take up with the reprefentation of others ; and it is an eafe to them to hear the opinion of perfons whom they efteem wifer than themfelves. No one loves to be deceived ; and thofe who are fear¬ ful of being mifled, are pleafed to meet with a perfoa, in whofe wifdom, as they think, they can fafely truft. The charadter of wifdom therefore is of gre?t fervice to an orator, fince the greater part of mankind are fwayed by authority rather than arguments. 2. But this of itfelf is not fufficient, unlefs the opi¬ nion of integrity be joined wfith it. Nay, fo far from it, that the greater knowledge and underftanding a man is fuppofed to have, unlefs he likewife have the clnsradler of an honeft man, he is often the more fuf- pedled. For knowledge without honefty, is generally thought to difpofe a perfon, as well as qualify him, to deceive. 3. And to both thefe qualities the appearance of kindnefs and benevolence fhouid likewife be added. For though a perfon have the reputation of wifdom and honefty, yet if we apprehend he is either not well af- fedted to us, or at leait regardless of our intereft, we are in many cafes apt to be jealous of him. Mankind are naturally fwajed by their affedtionsj and much in¬ fluenced Part I. . ° R , A 1 Invention, fluenefd through love or frtendflrip; nnd therefore no- *’ thing has a greater tendency to induce perfona to cre¬ dit what is faid, than intimations of affedtion and kind- nefs. The bed orators have been always fenfiole what great influence the exprefiions of kindnefs and benevolence have upon the minds of others, to indue them to believe the truth of what they fay; and there¬ fore they frequently endeavour to impreis them with the opinion of it. Thus Demofthenes begins his cele¬ brated oration for Ctefiphon. “ It is my hearty prayer (fays he) to all the deities, that this my defence may be received by you with the fame ane£tion whicn 1 have always exprefled for you and your city.’' And it is a very fine image of it which we have in Cicero, where, in order to influence the judges in favour of Milo, he introduces him fpeaking thus> as became a brave man, and a patriot, even upon the fuppofition he fhould be condemned by them : ‘‘ I bid my fellow ci¬ tizens adieu : may they continue flouriflnng and pro- fperous; may tjns famous city be preferved, rny inoif dear country, however it has treated me ; may my fel¬ low citizens enjoy peace and tranquillity without me, fince I am net to enjoy it with them, though I have procured it for them : I wall withdraw, I will be gone.” 4. Modtjly. It is certain, that what is modeftly fpoken is generally better received than what carries in it an air of boldnefs and confidence. Mod perfons, though ignorant of a thing, do not care to be thought fo ; and would have fame deference paid to their un- derftanding. But he who delivers himfelf in an arro¬ gant and afluming way feems to upbraid his hearers with ignorance, while he does not leave them to judge for themfelves, but diftates to them, and as it were demands their aflent to what he fays ; which is certainly a very improper method to win upon them. For not a few, when convinced of an error in fuen a way, will not own it ; but will rather adhere to their former opinion, than feem forced to thinK right, when it gives another the opportunity of a triumph. A prudent orator therefore will behave himlelf with mo- defty, that fie may not feem to infult his hearers; and will fet things before them in fuch an engaging man¬ ner, as may remove all prejudice either from his per- fon or what he aflerts. This is particularly neceflary in the exordium of a difeourfe. T the orator fet out with an air of arrogance and oftentation, the felf- love and pride of the hearers will be prefentiy awaken¬ ed, and will follow him with a very f'lfpicious eye throughout all his progrefs. His modefly fhould d;f- cover itfeli not only in his exprefiions at the begin¬ ning, but in his whule manner ; in his looks, in his gefttires, in the tone of his voice. Lveiy auditory take in good part thofe marks of refpeft and awe, which are paid to them by one who addrefles them. Indeed the modefty of an introduction fhould never betray any thing mean or abjeCt. It is always of great ufe to an orator, that together with modefly and deference to his hearers, he. ftiould fliow a certain fenfe of dignity, arifing from a peifuaiion of the ju- ftice or importance of the fubjeCt on which he is to fpeak. For to fpeak timoroufly, and with hefitation, deftroys the credit of what is offered; ami fo far as the fpeaker feems to diftrnft what he fays kimfdi, he of¬ ten induces others to do the like. ' O R Y. 3S9 But, as has been faid already, great care is to be Invention, taken that thefe characters do not appear feigned and counterfeit. For what is fictitious can feldom be long concealed. And if this be ©nee difeovered, it makes all that is faid fufpeCted, how fpecious foever it may otherwife appear. It is further neceffary, that the orator fhould know the world, and be well acquainted with the different tempers and difpofitions of mankind. Nor indeed can any one reafonably hope to fucceed in this province, without well confidering the circumftances of time and place, with the fentiments and difpofitions of thofe to whom he fpeaks ; which, according to Ariflotle, may be diftinguifhed four ways, as they difeover themfelvt*s by the feveral affections, habits, ages, and fortunes of mankind. And each of thefe require a different con- ducl and manner of addrefs. The affections denote certain emotions of the mind, which, during their continuance, give a great turn to the difpofition. For love prompts to one thing, and hatred to another. The like may be faid of anger, lenity, and the reft of them. Perfons differ likewife according to the various ha~ bits of their mind. So ajuft man is inclined one way, and an unjuft man another ; a temperate man to this, and an intemperate man to the contrary. And as to the feveral ages of men, Ariftotle has deferibed them very accurately ; and how perfons are differently affeCfed in each of them. He divides the lives of men, confidered as hearers, into three ftages ; youth, middle age, and old age.—Young men, lie fays, have generally ftrong paffions, and are very eager to obtain what they deiirc; but are likewife very mutable, fo that the fame thing does not pleafe them long. They are ambitious of praiie, and quick in their re- fentments : lavifh of their money, as not having ex¬ perienced the want of hi frank and open, becaufp they have not often been deceived ; and credulous for the fame rea-foiv. They readily hope the belt, becaufe they have not fuffered much, and are therefore not fo fenfible of the uncertainty of human affairs; for which reaibn they are likewife more eafily deceived. They are modeft, from their little acquaintance with the .world. They love company and cheerlulnefs, from the brifknefs of their fpirks. In a word, they gene¬ rally exceed in what they do ; love violently, hate violently, and a£t in the fame manner through the reft of their conduft.—The difpofition of old men is- generally contrary to the former. They are cautious, and enter upon nothing haildy ; having in the courle of many years been often impofed upon ; having of¬ ten erred, and experienced the prevailing corruption of human affaiis; for which reafon they are iikewife fufpieious, and moderate in their affecdons either of love or hatred. They purfue nothing great and noble, and regard only the ncceffaries of life They love money ; having learnt by experience the difficulty of getting it, and how eafily it is loft. They are fear¬ ful, which makes them provident. Commonly full of complaints, from bodily infirmities,, and a deficiency of fjiirits. They pleafe themfelves ratter with the memory of what is pad, than with any future profpebt ; having fo thort a view of life before them, in com¬ panion of what is already gone ; for which reaioa alio, they love to talk of things paft j and preier there . 39® ORATORY. pan x Inv ;ition. them to what is prefent, of which they have hut U" v'~'^ little relilh, and know they muft fhortly leave them. They are foon anyry, but not to excefs. Laftly, they are compallionate, from a fcnfe of their own in¬ firmities, which makes them think themfelves of all perfons mod expofed.—Perfons of a middle age, be¬ twixt thefe two extremes, as they are freed from the rafhnefs and temerity of youth, fo they have not yet fuffcred the decays of old Hence in every thing they generally obferve a better conduft. They are neither fo hady in their afient as the one, nor fo mi¬ nutely fcrupulous as the other, hut weigh the reafons of things. They regard a decency in their actions ; are careful and indultrious; and as they undertake what appears juft and laudable upon better and more deliberate conlideration than young perfons, fo they purfue them with more vigour and refolution than thofe who are older. As to the different fortunes of mankind, they may be Comideredas noble, rich, or powerful; and the con¬ trary to thefe.—Thofe oi high birth, and noble ex- tra&ion, are generally very tender of their honour, and ambitious to increafe it ; it being natural for all perfons to defire an addition to thofe advantages of which they find themfclves already poffeffed. And they are apt to coniider all others as much their in¬ feriors, and therefore expert great regard and defe¬ rence Ihould be Ihown them.— Riches, when accom¬ panied with a generous temper, command refpebl from the opportunities they give of being ufeful to others ; but they ufually elate the mind, and occafion pride. For as money is commonly faid to command ail things, thofe who are poffeffed of a large fhare of it, expect others (hould be at their beck ; fmee they enjoy that which ail defire, and which mod: perfons make the main purfuit of their lives to obtain.—But nothing is more apt to fweil the mind than power. This is what all men naturally covet, even when per¬ haps they would not ufe it. But the views of fuch perfons are generally more noble and generous than of thofe who only purfue riches and the heaping up of money. A date contrary to thefe gives a contrary turn or mind ; and in lower life, petfons difpofitiens ufually differ according to their ftstion and circum- ftanoes. A citizen and a courtier, a merchant and a foldier, a fcholar and a peafant, as their purfuits are different, fo is generally their turn and difpofkion of mind. It is the orator’s bufinefs, therefore, to confider thefe feveral chara&ers and circumftances of life, with the different bias and way of thinking they give to the mind ; that he may fo conduct himfelf in his beha¬ viour and manner of {peaking, as will render him mod acceptable, and gain him the good efteecn cf thofe whom he addreffea. Chap. VI. Of the Paffons. 20 It is r.ecef- As it is often highly neceffary for the orator, fo it fary.though requires his greateft Ikiil, to engage the paftions in his en^aa/thc *ntxrc^:- Quintilian calls this t/'e foul and fpiril of his interdl of art' doubtlefs, nothing more difeovers its em- the paf pire over the minds of men, than this power to excite, iions. appeafe, and (way their pafiione, agreeably to the de- fign of the fpeaker. Hence we meet with the charac¬ ters of admirable^ divine, and other fplendid titles, Invention, aferibed to eloquence by ancient wiite.s. It has in- deed been objefttd by fome, that whatever high enco¬ miums may be gwen of this art by the a Imirers of it, it is however dilingenuous to deceive and impofe upon mankind, as thofe feem to do, who, by engaging their paffians, give a bias to their minds, and take them off from the confideration of the truth ; whereas every thing Ihould be judged of from the reafons brought to fupport it, by the evidence of which it ought to Hand or fall. But in anfwer to this, it may be confidered that all fallacy is not culpable We often deceive children for their good ; and phyficians fometimes impofe on their patients, to come at a cure. And why, therefore, when perfons will not be pre¬ vailed with by reafon and argument, may not an ora¬ tor endeavour, by engaging their paffions, to perfuade them to that whic h is for their advantage ? Belides, Quintilian makes it a neceffary qualification of an ora¬ tor, that he be an honeft man, and one who wall not abufe his art But fitice thofe of a contrary charac¬ ter will leave no methods untried in order to carry their point, it is requifite for thofe who defign well to be acquainted with all their arts, without which they will not be a match for them ; as in military affairs it is highly advantageous for the general of an army to get himfelf informed of all the defigns and ftratagems of the enemy, in order to counteradt them. Indeed this part of oratory is not neceffary at all times, nor in ?.1I places. The better prepared perfons are to confider truth, and adl upon the evidence of it, the lefs occafion there appears for it. But the greater part of mankind, either do not duly weigh the force of ar¬ guments, or retufe to add agreeably to their evidence. And where this is the cafe, that pe.fons will neither be convinced by reafon, nor moved by the authority of the fpeaker, the only way left to put them upon ac¬ tion, is to engage their pillions. For the paffions are to the mind, what the wind is to a fhip : they move, and cany it forward ; and he who is without them, is in a manner w.thout adlion, dull and lifelefs. There is nothing great or noble to be performed in life, wherein the paffions are not concerned The Stoics, therefore, who were for eradicating the paffions, both maintained a thing in itfelf impoffihle, and which, if it was pofiible, would be of the greatell prejudice to man¬ kind. For while they appeared fuch zealous alfertors of the government of reafon, they fcarce left it any tiling to govern ; for the authority of reifon is prin¬ cipally exercifed in ruling and moderating the paffions, which, when kept in a due regulation, are the fprings and motives to virtue. Thus hope produces patience, and tear induftry ; and the like might be Ihown of the reft. T he paffions therefore are not to be extirpated, as the Stoics afterted, but put under the direction and conduit of reafon. indeed where they are ungovern¬ able, and refift the controul of reafon, they are, as fome have fitly called them, difeafes of the mind; and frequently hurry men into vice, and the greateft mif- fortunes of life: juft as the wind, when it blows mo¬ derately, carries on the ftnp ; but if it be too boifte- rous and violent may overict her. The charge there¬ fore brought againft this art, for giving rules to in¬ fluence the pallions, appears groundlefs and unjuft ; fifice the proper ufe of the paffions is, not to hinder the 2 exercife Part I. ORATOR Y. 391 Invention, exereife of reafon, but to engage iften to aft agreeably '—v—r to reafon. And if an ill ufe be fometimes made of this, it is not the fault of the art, but of the artift. We fhall here confider the paffions, as they may be feparately referred, either to demmflrative, delibera¬ tive, or judicial < urfes ; though they are not wholly confined to of them. ; f al- 1. To the demon ive kind, we may refer joy and fioii' whkhJbrroTV, love and hatt emulation and contempt. may be re- Joy is an elation t the mind, arifing from a fenfe ferred to Gf f0me prefent good. . Such a reflection naturally <'Crn difra" Creates a pleafant agreeable fenfation, v/hich ends c le* impending evil. For the greateft evils, while they^bcrltive appear at a diftance, do not much affeft us. Such difcomfes. perlons occafion fear, who are poffeffed of power, efpecially if they have been injured, or apprehend fo: likewife thofe who are addifted to do injuries, or who bear us an ill will. And the examples of others, who have fuffered in a like cafe, or from the fame perfons, help to excite fear. From the circumilances therefore either of the thing or perfon, it will not be difficult for the orator to offer fuch arguments as may be pro¬ per to awaken this paffion. So Demofthenes, when he would perfuade the Athenians to put themfelves in a condition of defence againft king Philip, enumerates the feveral afts of hoftility already committed by him againft the neighbouring ftates. And becaufe mens private concerns generally more affeft; them than what relates to the public, it is proper fometimes u -' I 392 O R A T Invention. f0 {^o^r t^e necefTary connexion tliefe have with each ot:her, and how the ruin of one draws the other af¬ ter it. The contrary paffion to fear is hope ; which arifes fither from a profpefl of feme future good, or the ap- prehenfion of fafety from thofe things which occafion our fear- Young perfons are eafily induced to hope the heft, from the vigour of their fpirits. And thofe who have efcaped former dangers are encouraged to hope for the like fuccefs for the future. The examples of others alfo, efpecially of wife and confiderate men, have often the fame good effeft. To find them calm and fedate when expofed to the like dangers, natu¬ rally creates confidence and the hopes of fafety. But nothing gives perfons fuch firmnefs and lleadinefs of mind, under the apprehenfion of any difficulties, as a confcioufnefs of their own integrity and innocence. Let dangers come from what quarter they will, they are heft prepared to receive them. They can calmly view an impending tempeft, obferve the way of its ap¬ proach, and prepare themfelves in the bell manner to avoid it. In Cicero’s oration for the Manilian law, he encourages the Roman citizens to hope for fuccefs againft Mithridates, if they chofe Pompey for their general, from the many inftances of his former fuc- cefles, which he there enumerates. Shame arifes from the apprehtmfion of thofe things that hurt a perfon’s charadler. Mcdejly has been wife¬ ly implanted in mankind by the great Author of na¬ ture, as a guardian of virtue, whfch ought for this reafon to be cherifhed with the greateft care ; becaufe, *s Seneca has well obferved, ‘‘ if it be once loft, it is fcarce ever to be recovered.” Therefore the true caufe or foundation of ftiame is any thing bafe or vicious ; for this wounds the character, and will not bear re¬ flexion. And he muft arrive at no fmall degree of in fen Ability, who can Hand again!! fuch a charge, if he be confeious to himfelf that it is juft. Therefore, to deter perfons from vicious aXions, or to expofe them for the coinmiffion of them, the orator endeavours to fet them in fuch a light as may moft awaken this paf¬ fion, and give them the greateft uneafinefs by the re- fleXion. And becaufe the bare reprefentation of the thing itfelf is not always fufficient for this purpofe, he fometimes enforces it by enlarging the view, and introducing thofe perfons as witnefies of the taX for whom they are fuppofed to have the greateft regard. Thus, when fome of the Athenians, in an arbitration about certain lands which had been referred to them by the contending parties, propofed it as the fhorteft way of deciding the controverfy, to take the pofTef- fion of them into their own hands ; Cydias, a member of the affembly, to diffuade them from fuch an unjuft aXion, defired them to imagine themfelves at that time in the general affembly of the ftates of Greece (who would all hear of it fnortly), and then coniider how it was proper to aX. But where perfons labour under an excefs of modefty, which prevents them from exerting themfelves in things fit and laudable, it may fometimes be necefiary to (how that it is faulty and ill grounded. On the other hand, hnmodejly, or impu¬ dence, which conlifts in a contempt of fuch things as affeX the reputation, can never be too much diCcou- raged and expofed. And the way of doing this is to make life of fuch arguments as are moft proper to 250. o R V Partt, excite ftiame. We have a very remarkable inftance of Invention. it in Cicero’s fecond Philippic, wherein he affixes this 1 3 charaXer upon Mark Antony through every feene of his life. 3. To judicial difeourfes, may be referred anger and of the paf. lenity, pity, and indignation. fions which Anger is a refentment, occafioned by fome affrontAlay be rc- or injury, done without any juft reafon. Now men^h^.z/^ are mere inclined to refent fuch a conduX, as they courfes. think they lefs deferve it. Therefore perfons of di- ftinXion and figure, who expeX a regard fhouid be paid to their charaXer, can the lefs bear any indica¬ tions of contempt. And thofe who are eminent in any profeffion or faculty, are apt to be offended if refleXions are call either upon their reputation or art. Magiftrates alfo, and perfons in public Rations, fame- times think it incumbent on them to refent indigni¬ ties, for the fupport of their office. But nothing fooner inflames this paffion, than if good fervices are rewarded with flights and negkX. The inftance of Narfes, the Roman general, is remarkable in this kind; who, after he had been fuccefsful in his wars w ith the Goths, falling under the difpleafure of the emperor Juflin, was removed from the government of Italy, and received by the emprefs with this taunt, That he mujl he fent to weave among the girls ; which fo provoked him, that he faid he would weave fuch a W'eb as they fhouid never he able to unravel. And accordingly, he foon after brought down the Longo- bards, a people of Germany, into Italy; where they fet¬ tled themfelves in that part of the country, which from them is now called(SeeNARSEs). The time and place in which an injury was done, and other cir- cumilances that attended it, may likewife contribute ve¬ ry much to heighten the faX. Hence Demofthenes, in his oration againft Midias, endeavours to aggravate the injury of being ftruck by him, both as he was then a magiftrate, and becaufe it w'as done at a public fefti- val. From hence it appears, that the perfons who rnoft ufually occafion this paffion are fuch as negleX the rules of decency, contemn and infult others, or oppofe their inclinations : as likewife the ungrateful, and thofe who violate the ties of friendihip, or requite favours with injuries. But when the orator endea¬ vours to excite anger, he ihould be careful not to ex¬ ceed due bounds in aggravating the charge, left what he fays appear rather to proceed from piejudice, than a ftriX regard to the demerit of the aXion. Lenity is the remiffion of anger The defigns of mens aXions are principally to be regarded ; and there¬ fore what is done ignorantly, or through inadvertency, is fooner forgiven. Alfo to acknowledge a fault, fub- mit, and afk pardon, are the ready means to take off refentment. For a generous mind is foon cooled by fub- miffion. Befides, he who repents of his fault, does real¬ ly give the injured party fome fatisfaXion, by punifti- ing himfeif; as all repentance is attended with grief and uneafinefs' of mind, and this is apt very much to abate the defire of revenge. As, on the contrary, no¬ thing is more provoking, than when the ofiender ei¬ ther audacioufly juftifies the faX, or confidently de¬ nies it. Men are likewife wont to lay afide their re¬ fentment, when their adverfaries happen by fome other means to fufftr what they think a fufficient fa¬ tisfaXion. JLaftly, eafy circumltance?, a lucky inci- 1 dent, partL ORA Invention, dent, ot any thing which gives the mind a turn to mirth and pleafure, has a natural tendency to remove anger. _ For anger is accompanied with pain and un- eafinefs, which very ill fuit joy and eheerfulnefs. The orator, therefore, in order to affuage and pacify the minds of his auditors, will endeavour to leffen their opinion of the fault, and by that means to take off - the edge of their refentment. And to this purpofe, it will be proper either to reprefent that the thing was not defigned, or that the party is forry for it; or to mention his former fervices; as alfo to (how the credit and reputation which will be gained by a generous forgivenefs. And this lall topic is very artfully wrought up by Cicero, in his addrefs to Csefar, in fa¬ vour of Ligarius. Pify arifes from the calamities of others, by reflec¬ ting, that we ourfelves are liable to the like misfor¬ tunes. So that evils, confidered as the common lot of humrn nature, are principally the caufe of pity. And this makes the difference between pity and good-willy which arifes merely from a regard to the circumfiances of thofe who want our afiiftance. But confidering the uncertainty of every thing about us, he muft feem in a manner diverted of humanity, who has no com- pafllon for the calamities of others; fince there is no aflli'ftion which happens to any man, but either that, or fome other as great, may fall upon htmfelf. But thefe perfons are generally fooneft touched with this pafllon, who have met with misfortunes themfelves. And by how much greater the dirtrefs is, or by how much the perfon appears lefs defervlng it, the higher pity does it excite : for which reafon, perfons are generally moft moved at the misfortunes of their relations and friends, or thofe of the beft figure and chara&er. The orator, therefore, in order to excite the greater pity, will en¬ deavour to heighten the idea of the calamity, from the feveral circumftances both of the thing itfelf and the perfon who labours under it. A fine example of this may be feen in Cicero’s defence of Murtena, cap. 40. &c. Indignation, as oppofed to pity, is an uneafinefs at the felicity of another who does not feem to deferve it. But this refpedls only external advantages, fuch as riches, honours, and the like ; for virtues cannot be the objeft of this paflion, Ariftotle therefore fays, 4‘ that pity and indignation are generally to be found in the fame perfens, and are both evidences of a good dirpofition.” Now the orator excites this paflion, by TORY. ‘ m fhowing the perfon to be unworthy of that^felicity Invention, which he enjoys. And as, in order to move compaf- fion, it is fometirnes of ufe to compare the former hap¬ py ftate of the perfon with his prefent Calamity ; fo here, the greater indignation is r^ifed, by comparing his former mean circumftances with his prefeiit ad¬ vancement : as Cicero doe« in the cafe of Vatinius. Thefe are the paflions with which an orator is principally concerned. In addrefling to which, not only the greateft warmth and force of expreflion is of¬ ten ntceflary ; but he mull likewife firft endeavour to imprefs his own mind with the fame pallion he would excite in others. A man may convince, and even perfuade others to a£t, by mere reafon and argument. But that degree of eloquence which gains the admi ttion of mankind, and properly denominates one an orator, is never found without warmth or paflion. Paflion, when in fuch a degree as to roufe and kindle the mind, without throw¬ ing it out of the pofleflion of itfelf, is univerfally found t© exalt all the human powers. It renders the mind infinitely more enlightened, more penetrating* more vigorous and mafterly, than it is in its calm mo¬ ments. A man, actuated by a ftrong paflion, becomes much greater than he is at other times. He is confci- ous of more ftrength and force ; he utters greater fen- timents, conceives higher defigns, and executes them with a boldnefs and a felicity of which on other occa- fions he could not think himfelf capable. But chiefly, with refpe£t to perfuaiion, is the power of pnflion felt. Almoft every man in paflion is eloquent. Then he is at no lofs for words and arguments He tranfmits to others, by a fort of contagious fympathy, the warm fentiments which he feels ; his looks and geftures are all perfuafive ; and nature: here ftiows herfelf infinitely more powerful than art. This is the foundation of that juft and noted rule. Si vis me jlere, dolendum ejl primum ipji tibi. The warmth, however, which we exprefs, muft be fuited to the occafion and the fubjeft ; for nothing can be more prepofterous than an attempt to introduce great vehemence into a fubjedt, which is either of flight importance, or which, by its nature, requires to be treated of calmly. A temperate tone of fpeech is that for which there is moft frequent occafion ; and he who is on every fubjedt paflionate and vehement, will be confidered as a blufterer, and meet with little regard. Part II. Of DISPOSITION. S Invention fupplies the orator with neceflary ma¬ terials, fo Difpojition diredts him how to place them in the moft proper and fuitable order. Difpofi- tion therefore, confidered as a part of oratory, natu¬ rally follows invention. And what is here chiefly in¬ tended'by it is, the placing the feveral parts of a dif- courfe in a juft method and dependence upon one an¬ other. Writers are not all agreed in determining the parts of an oration ; though the difference is rather in the manner of confidering them, than in the things them- fclves. But Cicero, whom wc fhaU here follow, men» Vol. XIII. Fart 1. , tions fix, namely, Introduction, Narration, Prcpofttion. Confirmation, Confutation, and Conclufion. Chap. I. Of the Introduction. The defign of this is to prepare the minds of theIntroduc- hearers for a fuitable reception of the remaining parts tion gains that are to follow. And for this end, three thingsthe hearts are requifite ; that the orator gain the good opinion of^ of^the his hearers, that he fecure their attention, and give them audience, fome general notion of his fubjedt. aed gives a i. Good opinion, When the orator introduces his£enera* n0* -SD difeourfe^^ ^<)4 O R A T pifjifififior. ^{fcourfe with his own perfon.he will be careful to (lo '■"v—7 it with modefty, and feem rather to extenuate his vir¬ tues and abilities, than to magnify them. And where the nature of the fubjeft may feem to require it, he will endeavour to (how, that fome juft and good rea- fon induced him to engage in it. We have a very fine example of this in Cicero’s oration for the poet Au- lus Licinius Archias, which begins thus : “ If I have any natural genius, wh’‘ch I am fenfible is very fmall, or any ability in fpeaking, wherein I own I have been very converfant 5 or any (kill acquired from the ftudy and precepts of the beft arts, to which my whole life has been devoted ; this Aulus Licinius has, in a particular manner, a right to demand of me the fruit of all thefe things. For as far back as 1 can remem¬ ber, and call to mind what paffed in my youth to the prefent time, he has been my chief advifer and encou- rager both to undertake and purfue this courfe of ftudies.” When the orator fets out with the perfons of thofe to whom the difeourfe is made, it is not un- ufual to commend them for their virtues, and thofe efpecially which have a more immediate relation to the prefent fubjeef. Thus Cicero begins his oration of thanks for the pardon of Marcellas, with an enco¬ mium upon the mildnefs, clemency, and wifdom of Caefar, to whom it was addreffed. But fometimes the orator expreffes his gratitude for paft favours ; as Ci¬ cero has done in his orations, both to the people and fenate of Rome, after his return from banilhment.— And at other times he declares his concern for them and their intereft ; in which manner Cicero begins his fourth oration againft Catiline, which was made in the fenate. “ I perceive (fays he) that all your countenan¬ ces and eyes are turned on me ; I perceive that you are felicitous, not only for your own danger, and that of the ftate, but for mine likewife, if that fhould be re¬ moved. Your affeftion for me is pleafant in misfor¬ tunes, and grateful in forrow ; but I adjure you to lay it afide, and, forgetting my fafety, confider your- felves and your children.” But injudicial cafes, both the charafter of the perfon whofe caufe he efpoufes, and that of the adverfe party likewife, furnifh the orator with arguments for exciting the good will of his hearers : The former, by commemorating his vir' tues, dignity, or merits, and fometimes his misfor¬ tunes and calamities. So Cicero, in his defence of Flaccus, begins his oration in commending him on the account of his fcrvices done to the public, the dignity of his family, and his love to his country. And De- mofthenes, in his oration againft Midias, fets out with a recital of his vices, in order to recommend his own caufe to the favourable opinion of the court. 2. Attention. On this head, Cicero fays, We lhall be heard attentively on one of thefe three things ; if we propofe what is great, neceflary, or for the in¬ tereft of thofe to whom the difcoui fe is addreffed.” So that,, according to him, the topics of attention are much the fame with thofe of good opinion, when ta¬ ken from the fubjeft. And indeed, people are natu¬ rally led to attend either to thofe things or perfons of which they have entertained a favourable opinion. But in order to gain this point, the orator fometimes thinks it proper to requeft the attention of his audi- «nce. Thus Cicero, in his defence of Cluentius, af- paving fhow® the heinoufnefs of the charge againft O R Y. Part IF. him, concludes his introduction in the following man-Difpofition. ner, fpeaking to the judges : “ Wherefore 1 intreat, u— that while I briefly and clearly reply to a charge of many years Handing, you will, according to your nfual cuftom, give me a kind and attentive hearing.” And again, in his fecond Philippic, addreffmg hitn- felf to the fenate : “ But as I muft fay fomething for myfelf, and many things againft Mark Antony ; one of thefe I beg of you, that you will hear me kindly, while I fpeak for myfelf; and the other I will under¬ take for, that when I fpeak againft him, you fhali hear me with attention.” But though the introduaiou be the moft ufual and proper place for gaining atten¬ tion, yet the orator finds it convenient fometimes to quicken and excite his hearers in other parts of hia difeourfe, when he obferves they flag, or has fome¬ thing of moment to offer. 3. Some general account of the fuhjeff of the dif¬ eourfe. This is always neceffary, which the two o»hers are not. And therefore it muft be left to the pru¬ dence of the orator when to ufe or omit them as he fhali judge proper, from the nature of his difeourfe, the circumftance of his hearers, and how he ftanda with them. But fome account of the fubjeft is what cannot be negleded. For every one expeds to be foon informed of the defign of the fpeaker, and what he propofes to treat of. Nor when they are all made ufe of, is it neceffary they Ihould always Hand in the order we have here placed them. Cicero fometimes enters immediately upon his fubjed, and introduces the other heads afterwards. As in his third oration againft Catiline, made to the body of the Roman people, which begins thus : ** You ice that the ftate, all your lives, eftates, fortunes, wives and children, and this feat of the greateft empire, the moft flouriih- ing and beautiful city, having by the favour of hea¬ ven towards you, and my labours, counfels, and dan¬ gers, been this day refeued from fire and fword and the very jaws of defttudion, arepreferved and reftored to you.” And then he proceeds to recommend him- felf to their efteem and benevolence, from the coniide- ration of thefe benefits. # Thefe are the heads which commonly furnifli m*tter for this part of a difeourfe. But orators often taketion is not occafion from the time, place, largenefs of the affem-confined to bly, or fome other proper circumftance, to compliment heads, their hearers, recommend themfelves, or introduce the mitofothe- fubjed upon which they are about to treat Inftancesmatter, if of each of thefe may be met with in feveral of Cicero'sfumifhed orations. And fometimes they fet out with fome com-^7^=^ parifon, fimilitude, or other ornament, which they ac*of thecafe, commodate to the occafion of their difcom fe.^ 1 hus Ifocrates enters upon his celebrated panegyric in praife of his countrymen the Athenians with the following companion : “ I have often wondered what could be their defign who brought together thefe affemblies, and inftituted the gymnaftic fports, to pro^ofe fo great re¬ wards for bodily ftrength ; and to vouchfafe no ho¬ nour to thofe who applied their private labours to ferve the public, and fo cultivated their minds as to be ferviceable to others, to whom they ought to have fliown greater regard. For although the ftrength of a champion was doubled, no benefit would from thence accrue to others; but all enjoy the prudence of one manj wh® will hearken to his advice.” In fome cafes, oratorsu Part II. ORATORY. 395 DiCpofidnn. ©rators have recourfe to a more covert and artful way 1_ » of opening their fubjeft, endeavour to remove jealou- fies, apologir.e for what they are about to fay, and feem to refer it to the candour of the hearers to judge of it as they pleafe. Cicero appears to have been a perfect mafter of this art, and ufed it with great fuccefs. Thus in his feventh Bhilippic, where he feems to exprefs the grcateft concern, left what he was about to fay fhould give any offence to the fenate to whom he was fpeak- ihg : “ I (fays he) who always declared for peace, and to whom peace among ourfelves, as it is wifhed for by all good men, was in a particular manner defirable ; who have employed all my induftry in the forum, in the fenate, and in the defence of my friends, whence I have arrived to the higheft honours, a moderate for¬ tune, and what reputation I enjoy ; I therefore, who owe what I am to peace, and without it could not have been the perfon I am, be that what it will, for I would arrogate nothing to myfelf; I fpealc with concern and fear, hew you will receive what I am going to fay ; but I beg and intreat you, from the great regard I have always expreffed for the fupport and advancement of your honour, that if any thing faid by me ftiould st firft appear harfti or unfit to be received, you will fiotwithftanding pleafe to hear it without offence, and Siot rejetfi it till I have explained myfelf: I then, for I muff repeat it again, who have always approved of peace, and promoted it, am againft a peace with Mark Antony.” This is called injinuation; and may be ne- eeffary, where a caufe is in itfelf doubtful, or may be thought fo from the received notions of the hearers, or the impreffions already made upon them by the contrary fide. An honeft man would not knowingly engage in a bad canfe ; and yet, through prevailing prejudice, that may be fo efteemed which is not fo in itfelf. In thefe cafes, therefore, great caution and prudence are neceffary to give fuch a turn to things, and place them in that view as may be leaft liable to offence. And becaufe it fometimes happens that the hearers are not fo much difpleafed at the fubjeft as the perfon, Quintilian’s rule feems very proper, when he fays, “ if the fubjeft difpleafes, the charafter of the perfon ftiould fupport it; and when the perfon gives offence, he ftvotild be helped by the caufe.” Chap. II. Of Narration. 36 ... Narration The orator having prepared his hearers to receive hrinps for- his difeourfe# with candour and attention, and ac- ward all quainted them with his general defign in the intro- cumftances before he proceeds direftly to his fubjedt, ofacafe,8cc often finds it neceffary to give fome account of what hi their prr>preceded, accompanied, or followed upon it. And pet and na-^jg he f>oes jn orcjer to enlarge the view of the parti- lur)*,or<'er’fciilar point in difpute, and place it in a clearer light, calculated This is called narration ; which is a recital or lome- to fet it in thing done, in the order and banner in which it was a juft <>r a done. Hence it is eafy to perceive what thofe things ftronglight. are which properly enter into a narration. And fuch are the caufe, manner, time, place, and confequences of an a&ion ; with the temper, fortune, views, abi¬ lity, affociates, and other cireumftances of thofe con* rerned in it. Not that each of thefe particulars is ne- •ceffary in every narration ; but fo many of them at kail as are requifite to fet the matter in a juft light, and make it appear credible. Be (ides, in relating a blifpofuion, fadl, the orator does not content himfelf with fuch an ''“"■'V"'1 account of it as is barely fufficient to ren ler what he fays intelligible to his hearers ; but deferibes it in fo- ftrong and lively a manner, as may give the greateft evidence to his relation, and make the*deepeft impref- fion upon their minds. And if any part of it appears at prtfent lefs probable, he promifes to clear up and remove any remaining doubts in the progrefs of his difeourfe. For the foundation of his reafoning after¬ wards is laid in the narration, from whence he takes his arguments for the confirmation. And therefore it is a matter of no fmall importance that this part be well managed, fince the fuccefs of the whole difeourfe fo much depends upon it. See Narration. There are four properties required in a good narra¬ tion ; that it be ftiort, clear, probable, and pleafant. 1. The brevity of a narration is not to be judged of barely from its length : for that may be too long, which contains but a little; and that too ftiort, which comprehends a great deal. Wherefore this depends upon the nature of the fubjeft, fince fome things re¬ quire more words to give a juft reprefentation of them, and others fewer. That may properly therefore be called a Jlort narration^ which contains nothing that could .well have been omitted, nor omits any thing which was neceffary to be faid. Now, in order to avoid both thefe extremes, care ftiould be taken not to go farther back in the account of things, nor to trace them down lower, than the fubjedt requires; to fay that only in the general, which does not need a more particular explication ; not to afiign the caufes of things, when it is enough to ftiow they were done; and to omit fuch things as are fufficiently underftood, from what either preceded, or was confequent upon them. But the orator ftiould be careful, left, while he endeavours to avoid prolixity, he run into obfeu- rity. Horace was very fenfible of this danger, when he faid: By driving to be ftiort, I grow cbfcure. 2, Perfpicuity. This may juftly be efteemed the chief excellency of language. For as the defign of fpeech is to communicate our thoughts to others, that muft be its greateft excellence which contributes moft to this end; and that, doubtlefs, is perfpicuity. As perfpicuity therefore is requifite in all difeourfe, fo it is particularly ferviceable in a narration, which con¬ tains the fubftance of all that is to be faid afterwards. Wherefore, if this be not fufficiently underftood, much lefs can thofe things which receive their light from it. Now the following things render a narration clear and plain : Proper and fignificant words, whofe meaning is well known and determined ; ftiort fentences, though full and explicit, whofe parts are not perplexed, but placed in their juft order ; proper particles to join the fentences, and ftiow their conneftion and dependence on each other; a due regard to the order of time, and other circumftances neceffary to be expreffed ; and, laftly, fuitable tranfitions. 3. Probability. Things appear probable when the caufes affigned for them appear natural; the manner in which they are deferibed is eafy to be conceived ; the eonfequences are fuch as might be expe&ed; the characters of the perfons are juftly reprefented; 3D 2 and 396 ORATORY. TJifpofitlon. and the whole account is well attefted, confiftent v/!th itfelf, and agreeable t j the general opinion. Simpli¬ city Likewife in the manner of relating a fadf, as well in the ftyle, without any referve or appearance of art, contributes very much to its credibility. For truth loves to appear naked and open, ftript of all colouring or difguife. The Confpiracy of Catiline was fo daring and extravagant, that no one but fuch a defperado could ever have undertaken it with any hopes offuccefs. However, Cicero’s account of it to the fenate was fo full and exaft, and fo well fuited to the chara&er of the perfon, that it prefently gained credit. And therefore, when, upon the conclufion of Cicero’s fpeech, Catiline, who was prefent, imme¬ diately flood up, and defired they would not entertain . fuch hard thoughts of him, but confider how much his family had always been attached to the public intereft, and the great fervices they had done the ftate ; their refentments rofe fo high, that he could not be heard: upon which he immediately left the city, and went to his affociates. 4. The laft thing required in a narration is, that it he pleafant and entertaining. And this is more diffi¬ cult, becaufe it doe* not admit of that accurate com- pofition and pompous drefs which delight the ear, and recommend feme other parts of a difeourfe. For it certainly requires no fmall fkill in the fpeaker, while he endeavours to exprefs every thing in the moft na¬ tural, plain, and eafy manner, not to grow flat and tirefome. For Quintilian’s remark is very juft, that the moft experienced orators find nothing in elo¬ quence more difficult, than what all who hear it fancy they could have faid themfelves.” And the reafon of this feems very obvious. For as all art is an imitation of nature, the nearer it refembles that, the more per¬ fect it is in its kind. Hence unexperienced perfons often imagine that to be eafieft which fuits beft with thofe natural ideas to which they have been accuf- tomed ; till, upon trial, they are convinced of their miftake. Wherefore, to render this part of a difeourfe pleafant and agreeable, recourfe muft be had to va¬ riety both in the choice of words and turns of the ex- preffion. And therefore queftions, admirations, inter¬ locutions, imagery, and other familiar figures, help very much to diverfify and enliven a narration, and prevent it from becoming dull and tedious, efpecially when it is carried on to any confiderable length. Theufes of Having given a brief account of the nature and narration, properties of a narration, we fhall now proceed to con¬ fider the ufes of it. Laudatory orations are ufually as it were a fort of continued narration, fet off and adorned with florid language and fine images proper to grace the fubjtdf, which is naturally fo well lilted to afford pltafure and entertainment. Wherefore a fiparate narration is more fuited to dtliberatme and judicial difeourfes. In Cicero’s oration for the Manilian law (which is of the former kind), the defign of the narration is to (how the Roman people the neceffity of giving Pompey the command ot the army againft king Mithridatee, by reprefenting the nature of that war, which is done in the following manner: “ A great and dangerous war (fays he) threatens your revenues and allies from two very powerful kings, Mithridates and Tigranes ; one of whom not being puriutd after his defeat, and the 'Part If, other provoked, they think they have an opportunity Oifpofitioru to feize Afia. Letters are daily brought frona thofe — parts to worthy gentlemen of the equeftriau order, who have large concerns there in farming your reve¬ nues: they acquaint me, as friends, with the ftate of the public affairs, and danger of their own ; that many villages in Bithynia, which is now your province, are burnt down; that the kingdom of Ariobarzanes, which borders upon your revenues, is entirely in the enemy’s power ; that Lucullus, after feveral great vi£tories, is withdrawn from the war ; that he who fucceeds him is not able to manage it; that all the allies and Ro¬ man citizens wifh and delire the command of that war may be given to one particular perfon ; and that he alone, and no other, is dreaded by the enemies. You fee the ftate of the cafe ; now coniider what ought to be done.” Here is an unhappy feene of affairs, which feemed to call for immediate reurefs. T he caufes and reafons of it are affigned in a very probable manner, and the account well attefted by perfons of charadter and figure. And what the confequences would be, if not timely prevented, no one could Wj.11 be ignorant. The only probable remedy fuggefted in general is, the committing that affair to one certain perfon, which he afterwards fhows at large could be no other than Pompey. But in Cicero’s defence of Milo (which is of the judicial kind), the dtfign of the narration, which is greatly commended by Qjj’ntilian, is to prove that, in the combat between Clodius and Milo, the former was the aggreflbr. And in order to make this appear, he gives a fummary account of the condudi of Clodius the preceding year ; and from the courfe of his adlions and behaviour, {how's the inveterate hatred he bore to Milo, who obftru&cd him in his wicked dtfigns. For which caufe he had often threatened to kill him, and given out that he fhould not live be¬ yond fuch a time : and accordingly he went from Rome without any other apparent reafon, hut that he might have an opportunity to attack him in a conve¬ nient place near his own houfe, by which he knew Milo was then obliged to paffi. Milo was in the fe¬ nate that day, where he ftaid till they broke up, then went home, and afterwards fet forward on his journey. When he came to the place in which he was to be aflaulted, Cloiius appeared every way prepared for fuch a defign, being on horfeback, and attended with a company of defperate ruffians ready to execute his . commands; whereas Milo was with his wife in a cha¬ riot, wrapped up in his cloak, and attended with fer- vants of both fexes. Thefe were all circumitancee which preceded the fadf. And as t*» the adtion itfclf, with the event of it, the attack, as Cicero lays, was begun by the attendants of C lodius from an higher ground, who killed Mi o’s coachman : upon v* hich Milo, throwing off his cloak, leaped out, and made a brave defence againft Clodius’s men, who were got about the chariot.. But Clodius, in the heat of the fkirmifti, giving out that Milo was killed, was himt.lf flain by the fervants ®f Milo, to avenge, as they thought, the death of their mafter. Here fetms to be all the requilites proper to n.ake this account cre¬ dible. Clodius’s open and avowed hatred of Milo, which proceeded fo far as to threaten his lire ; the time of his leaving Rome; the convenience of the place ; his habit and company fo d.fiertnt irom thofe of part II. O R A T Difpofition of Milo; joined with his known charafter of a moft u M pro0igate und audacious wretch, could not but render it very probable that he had formed that defign to kill Milo. And which of them began the attack might very reafonably be credited from the advanced ground on which Clodius and his men were placed ; the death of Milo's coa hinan at the leginning of the combat ; the fkirmilh afterwards at the chariot ; and the reafon of Clodius s own death at la ft, which does not appear to have been imended, till he had given out that Milo was killed. But a diftindt and feparate narration is not always xieceflary in any kind of difeourfe. For if the matter be well known before, a fet and formal narrative will be tedious to the hearers. Or if one pafty has done it already, it is needlefs for the other to repeat it. But there are three occafions efpecially, in which it may feem very requifiter, when it will bring light to the fubjedl; when different accounts have already been given out concerning it ; or when it has been milre- pieferted by the adverfe party. If the point in con- troverfy be of a dubious nature, or not fufficiently known to the hearers, a diftindb account 01 the matter, with the particuiar circumftances attending it, muft be very ferviceable, in order to let them into a true ftate of the cafe, and enable them to judge of it with greater certainty. Moreover, where the oppefrte party has fet the matter in a falfe light by iome artlui and invidious turn, or loaded it with any odious circumftancts, it feems no lefs necefiaty that endeavours fhouki be ufed to remove any ill imprefiions, which otherwife might remain upon the minus of the hearers, by a different and more favourable reprefentation. And if any thing can be fixed upon to make the contrary account ap¬ pear abfurd or incredible, it ought particularly to be remarked. Thus Cicero, in his defence of Sextus Rofcius, fhows that he was many miles diftunt from Rome at the time he was charged with having killed his father there. “ Now (fays he), while Sextus Ro¬ fcius w'as at / -meria, and this 1 itus Rofcius [his ac~ CMfer'] at Rome, Sextus Rofcius [the jut her] was killed at the baths on Mount Palatine, returning from fupper. From whence 1 hope there can be no doubt who ought to be fufpe&ed of the murder And, were not the thing plain of itfelf, there is this farther fufpicion to fix it upon the profecutor ; that, atterthe fadt was committod, one Manlius Glam ia, an obfcure fellow, the frecdrmn, client, and famili r, of this Titus Ro. feius, tirft carried the account of it to Ameria, not to the fon of the deceafed, but to the houfe of Titus Capito his enemy with more to the fame purpofe. But what we bring it for is, to fhow the ufe which Cicero makes of this narration lor retorting the crime Upon the profecutors. But the oratoi fhonld be very careful, in condudfing this part, to avoid everything which may prejudice the caufe he efpoufes. Falkhood, and a nnlr< preientation of fadts, are not to ! e jutbikd ; hut no one is obliged to fay thofe thirn s whicn may hurt hirrfelf. Wt fhajl juft mention one inftance ot this from Cicero, where he has fhown great fkili in this teipedf, in pie,ding before Caelar lor the pardon ol Iffgarius, who had joined with Pompey id the civil war. For Ligarius, having been repreiented by the advtrle party as an o r y. 397 enemy to Csefar, and fo efteemed by Csefar hrmfelf; Difyofuion. Cicero very artfully endeavours in his narration to take off the force of this charge, by (bowing, that, when the war firll broke out, he refufed to engage in it; which he would not have done- had he borne any peifonal hatred to Caefar. “Quintus Ligarius (fays he), before there was any fufpicion oi a war, went into Africa as a legate to the proconful Caius Confidius ; in which he fo approved himfelt, both to tae Roman citizens and allies, that, when Confidius left the pro¬ vince, the inhabitants would not be fatisfied he (hould leave the government in the hands of any other per- fon. Therefore Quintus Ligarius having excufed him- fclf in vain for feme time, accepted oi the government, againft his will; which he fo managed curing the peace, that both the citizens and allies were greatly pleafed with his integrity and jurtice. The war broke out on a fudden, which thofe in Africa did not hear of till it was begun : but upon the news of it, partly through inconfiderate hafte, and partly from blind fear, they looked out for a leader, firft for their own fa ety, and then as tin y were affe&ed; when Ligarius, thinking of home, and dtfuous to return to his friends^ would not he prevailed on to engage in any affairs. In the mean time, Publius Ac< ius Varus, the praetor,, who w s formerly governor of Africa, coming to Lti- ca, recoutfe was immediately had to him, who very eagerly took upon himfelf the government; if that ^ can be called a which was conferred on a private man by the clamour of the ignorant multitude, without any public authority. Ligarius, tnerefore, who endeavoured to avoid every thing of that kind, ceafed to a£t foon after the arrival of Varus.’ Here Cicero ends his narrative. For though Ligai ius after¬ wards joined with Pompey's party, yet to have men» tioned that, which was nothing more than what many others had done, whom Csefar had already pardoned, could have ferved only to increafe his difpieafure againft. him. And therefore he doubtiefs (bowed great (kill in fo managing Ivs account, as te take off the main force of the acculation, and by that means make way for his pardon, which he accordingly obtained. Chap. III. Of the Propofition. In every juft and regular difeourfc, the fpeaker propo* .intention is to prove or illuftrate fomething. And^h^^® when he lays down the fubjeft upon which he defignsex, rt^s to treatj in a diftindt and exprefs manner, tnis is calledrnan er 0f the proportion. laying Orators ufe fcveral ways in laying down the fnljeAdown die of their difeourfes. Sometimes they do it in one ge-^j^^ neral propofiuon. We have an inftance of this in0/at0 Cicero’s fpeech to the fenate, the day alter CaeLr was means killed (as it is given us by Dion Caffius), in whichticat* his defign was to perfuade them to peace and unani¬ mity. “ ibis (fays he) being the ftate of our affairs, I think it neceffary that we lay alide all the difcord and enmity which have been among us, and return again to our iormer peace and agreement.” And then he proceeds to offer his reafons for this advice. At other times, to give a clearer and more diftinfF view ol their difeourfe, they fubjoin to the propofition , th&- 398 ORATORY. pfpt-fuion.tlie genmllieads of argument by which they endea- them in the order at firfl: laid down This method Cicero ufes in his 19 When the fubjedt re¬ fers to feve is called a partition. vour to fupport it. This method Cicero ufes feventh Philippic, where he fays, “ I who have always commended and advifed to peace, am againft a peace with Mark Antony. But why am I averfe to peace? Becaufe it is bafe, becaufe it is dangerous, and becaufe it is impra&icable. And I befeech you to hear me with your ufual candour, while I make out thefe three things.” But when the fubjeft relates to feveral different things, which require each of them to be feparately rai'differerttaid down in diftindt propofitions, it is called a parti- things, and tion ; though fome have made two kinds of partition, requires to one 0f which they call feparation, and the other enu- eTw i'n aeration. By the former of thefe, the orator fhows diftimft pro- *n what he agrees with his adveffary, and wherein he pofitions, itdiffers from him. So, in the cafe formerly mentioned, of a perfon accufed of facrilege for Healing private money out of a temple, he who pleads for the defen¬ dant fays, “ He owns the fadt; hut it being private money, the point in queftion is, Whether this be facri¬ lege ?” And in the caufe of Milo, Cicero fpeaking of Clodius, fays, “ The point which now comes before the court, is not, Whether he was killed or not ; that we confefs : but, Whether juftly or unjuftly.” Now in reality here is no partition, fmee the former branch of the propofition is what is agreed upon, and given up ; and confequently it is only the latter that remains to be difputed. It is called enumeration, when the ora¬ tor acquaints his hearers with the feveral parts of his difeourfe upon which he defigns to treat. And this alone, properly fpeaking, is a partition. Thus Cicero Hates his plea in his defence of Muraena : “ 1 perceive the accufation confiHs of three parts: the firH refpedls -the conduft of his life ; the fecond his dignity; and the third contains a charge of bribery.” There are three things requifite in a good parti¬ tion ; that it be Jhort, complete, and confift but of a Jew inemlers. A partition is faid to be Jhort, when each propofi- tion contains in it nothing more than what is neceffary. So that the brevity here required is different from that of a narration ; for that confiHs chiefly in things, this in words. And, as Quintilian juftly obferves, brevity feems very proper here, where the orator does not fhow what he is then fpeaking of, but what he defigns to difeourfe upon. Again, it ought to be complete and perfedl. And for this end, care muH be taken to omit no neceflary part in the enumeration. But, however, there fhould be as few heads as is confiflent with the nature of the fubjedt. The ancient rhetoricians preferibe three or four at the moft. And we do not remember that Cicero ever exceeds that number. But it is certain, the fewer they are, the better, provided nothing necefiary be omitted For too large a number is both difficult of retention, and apt to introduce that confufion which partition is de- figned to prevent. Hitherto we have been fpeaking only of thofe heads into which the fubjeft or general argument of the dif¬ eourfe is at firft divided. For it is fometfmes conve¬ nient to divide thefe again, or at leafl fome of them, into feveral parts or members. And when this hap¬ pens, it is bell done, as the fpeaker conies to each of Part II. by which*'means Oi'pofltien. the memory of the hearers will be lefs burdened than —--Y——1 by a multitude of particulars at one and the fame time. Thus Cicero, in his oration for the Manilian law, com- prifes what he defigns to fay under three general heads. “ FirH (fays he) I ftrall fpeak of the nature of the war, then of its greatnefs, and laftly about the choice of a general,” And when he comes to the firH of thefe, he divides it again into four branches ; and Hiows, “ how much the glory of the Romans, the fafety of their allies, their greateH revenues, and the fortunes of many of their citizens, were all concerned in that war.” The fecond head, in which he confiderl the greatnefs of the war, has no divilion. But when he comes to the third head, concerning the choice of a general, he divides that likewife into four parts ; and fhows, that fo many virtues arc neceflary in a con- fummate general, fuch an one as was proper to have the management of that war, namely,^//in military affairs, courage, authority, and fuccefs t all which he at¬ tributes to Pompey. And this is the fcheme of that celebrated oration. < This fubdividing, however, flrould never have place but when it is abfolutely neceffary. To fplit a fub- jeft into a great many minute parts, by divifions and fubdivifions without end, has always a bad effedt in fpeaking. It may be proper in a logical treatife ; but it makes an oration appear hard and dry, and unne- ceflarily fatigues the memory. In a fermon, there may be from three to five, or fix heads, including fubdivifions j feldom ftiould there be more. Further, fome divide their fubjed into two parts, Neg^e and propofe to treat upon it negatively and pojitively; ar.ci pofi- by fliowing firft what it is not, and then what it is. hvc divi- But while they are employed to prove what it is not, they are not properly treating upon that, but fome- ^ thing elfe ; which feems as irregular as it is unnecef- fary. For he who proves what a thing is, does at the fame time Alow what it is not. However, in fad, there is a fort of divifion by affirmation and negation, which may fometimes be conveniently ufed. As if a perfon, charged with killing another, Ihould thus Hate his defence : I had done right if / had killed him, but I did not kill him. Here indeed, if the latter can be plainly made to appear, it may feem needlcfs to infill upon the former. But if that cannot be fo fully pro¬ ved, but there may be room left for fufpicion, it may be proper to make ufe of both : for all perfons do not fee things in the fame light, and he who believes the fad, may likewife think it juft; while he who thinks it unjuft, may not believe it, but rather fup- pofe, had it really been committed by the party, he w'ould not have denied it, fince he looked upon it as defenfible. And this method of proceeding, Quinti¬ lian compares to a cuftom often ufed in traffic, when perfons make a large demand at firft, in order to gain a reafonable price. Cicero ufts this way of reafoning in his defence of Milo; but in the contrary order: that is, he firft anfwers the charge ; and then juftifiea the fad, upon the fuppofition that the charge was true. For he proves, firfl, that Clochus was the ag- greflbr; and not Milo, as the contrary party had af- ferted : and then to give the greater advantage to his caufe, he proceeds to ftrow, that if Milo had been the aggreflbr, it would however have been a glorious ac- 4 tion Partll. ORATORY. p;rp.r,tion.tion to take off fuch an abandoned wretch, who wat thod different front them both. w-y—^ not only a common enemy to mankind, but had hke- wife often threatened his life. A good and juft partition is attended with conhde- rable advantages. For it gives both light and orna¬ ment to a difcourfe. And it is alfo a great relief to the hearers, who, by means of thefe ftops and reits, are much better enabled to keep p-jce with the fpeaker without confufion, and by carting their thoughts either way, from what has been faid, both know and are prepared for what is to follow. And as perfons, in travelling a road with which they are acquainted, go on with greater pleafure and lefs fatigue, becaufe they know how far it is to their journey’s end ; to to be apprifed of the fpeaker’s defxgn, and the feveral parts of his difcourfe which he propofes to treat on, contributes very much to relieve the hearer, and keep up his attention. This muft appear very evident to all who confider how difficult it is to attend long and clofely to one tiling, efpecially when we do not know how long it may be before we are like to be releafed. Whereas, when we are before-hand acquainted with the fcheme, and the fpeaker proceeds regularly from one thing to another, opportunity is given to eale the mind, by relaxing the attention, and recalling it again when neceflary. In a fermon, or in a pleading at the bar, few things are of greater confequence than a proper or happy divifton. It ffiould be ftudied with much accuracy and care; for if one take a wrong method at firlt fetting out, it will lead them aftray in all that follows. It will render the whole difcourfe either perplexed or languid ; and though the hearers may not be able to tell where the fault or diforder lies, they will be fenfible there is a diforder fome- where, and find themfelves little affeded by what it fpokcn. The French writers of fermons ftudy neat- nefs and elegance in the divifion of their fubjedts much more than the Engliffi do ; whofe diftributions, though fenfible and juft, yet are often inartificial and verbofe. Chap. IV. Of Confirmation. Confirms- The orator having acquainted his hearers, in the ♦.ion isufed propofition. with the fubjeft on which he dehgns to •or the ar- jifcourfe, ufually proceeds either to prove or illuftrate what he has there laid down. For fome difcourfes require nothing more than an enlargement or ill nitra¬ tion, to fet them in a proper light, and recommend them to the hearers; for which reafon, hkewife, they have often no diftina propofition. But where arguments are brought in defence of the fubjeft, this is properly confirmation For, as Cicero defines it, “ confirmation is that which gives proof, authority, and fupport to a caufe, by reafoning.” And for this end, if any thing in the propofition feems oblcure, or liable to be mifunderftood, the orator firft takes care to explain it, and then goes on to offer fuch arguments for the proof of it, and reprefent them in fuch a light, as may be moft proper to gain the affent of his hearers. But here it is proper to obferve, that there are different ways of reafoning fuited to different arts. The mathematician treats his fubjed after another wanner than the logician^ and the orator in a me* for the ar guments brought in defence of a fubjedt. '396 Two methods of Difpofition. reafoning are employed by orators, the fynthetic and l_" v analytic. . Svnthetie I. Every piece of fynthetic reafoning m ay be re- rJafon;nj, folved into a fyllogifm or feries of fyllogifms, (fee To- may alway®- gic.) Thus we may reduce Cicero’s argument, byberefolved which he endeavours to prove that Clodius affaulted imo a fyJo- Mil©, and not Milo Clodius, to a fyllogifm in thi8^esoffyll0~ manner: gifms. He ivas the aggrejfor, ivhofe advantage it was to hid the other. But it was the advantage of Clodius to kill Miloy and not Milo to hill him. rr i a Therefore Clodius was the aggrejfor, or he ajjaultcd' Milo. The thing to he proved was, that Clodius affaulted Milo, which therefore comes in the conclufion : and the argument, by which it is proved, is taken from the head of profit or advantage. Thus the logician, would treat this argument ; and if either of the pre- mifes were queftioned, he would fupport it with ano¬ ther fyllogifm. But this fliort and dry way of rea- foning does not at all fuit the orator : who not only for variety changes the order of the parts, beginning fometimes with the minor, and at other times with the conclufion, and ending with the major ; but likewife clothes each part with fuch ornaments of expreffion as are proper to enliven the fubjedt, and render it more agreeable and entertaining. And he frequently fubjoins, either to the major propofition, or minor*, and fometimes to both, one or more arguments to fup¬ port them ; and perhaps others to confirm or illuftrate them as he thinks it requifite. Therefore, as a logi¬ cal fyllogifm conlifts of three parts or propofitions* a rhetorical fyllogifm frequently contains four, and many times five parts. And Cicero reckons this laffc the moft complete. But all that is faid in confirma¬ tion of either of the premifes is accounted but as one part. This will appear more evident by examples. By a ftiort fyllogifm Cicero thus proves, that the Carthaginians were not to be trufted : “ Thofe who. have often deceived ns, by violating their engage¬ ments, ought not to be trufted. For if we receive any damage by their treachery, we can blame no body but ourfelves. But the Carthaginians have often fo deceived us. T herefore it is madnefs to truft them. Here the major propofition is fupported by a reafon. The minor needed none ; becaufe the treachery of the Carthaginians was well known. So that this fyllogifm confifts of four parts. But by a fyllogifm of five parts he proves fomewhat more largely and elegantly, that- the world is under the direaion of a wife governor. The major is this : “ Thofe things are better governed which ate under the ditedtion of witdom, than thofe which are not.” This he proves by fevtral inftances ? « A houfe managed with prudence has every thing in better order, and more convenient) than that which is undei no regulation. An army commanded by a wife and fkilful general is in all refpe&s better go¬ verned than one which has a fool or a madman at the head of it. And the like is to be faid of a ffiip, which performs her courfe bell under the dire&ion of a fkil¬ ful pilot.” I hen he proceeds to the minor thus s But nothing is better governed than the univerfe.” 400 O II A T Difytifiticn, Which he proved m thia manner: “ The'rifing and fet- - ting af the heavenly bodies keep a certain determined order ; and the fevetal feafons of the year do not only necefTarily return in the fame manner, but are fuited to the advantage of the whole ; nor did the viciffi- tudes of night and day ever yet become prejudicial, by altering their courfe.” From all which he con¬ cludes, “ That the world mull be under the direction of a wife governor.” In both thefe examples, the regular order of the parts is obferved. We (hall therefore produce another, in which the order is di- reftly contrary ; for beginning with the eonclufion, he proceeds next to the minor propofition, and fo ends with the major. In his defence of Coelius, his delign is to prove that Ceelius had not led a loofe and vicious life, with which his enemies had charged him. And this he does, by fhowing he had dofely followed his ftudies, and was a good orator. This may probably at firll fight appear but« weak argu¬ ment ; though to him who confiders what Cicero everywhere declares necelfary to gain that chara&er, it may perhaps be thought otherwife. The fenfe of what he fays here may be reduced to this fyllogifm. Thofe who have purfued the jhidy of oratoryt fo as to excel in it, cannot have led a loofe and vicious life But Ccelius has done this. Therefore his enemies charge him wrongfully. ° R Y. Part II. ters perfons from the labour and ftudy of oratory} notfli'pofidon. their want of genius or education.” 2. By Enthymem. But orators do not often ufe 0 33 complete fyllogifms, but moft commonly enthymems. noToften* An enthymem, as is (hows eifewbere, is an Imperfe&ufc com- fyllogifm, confiding of two parts ; the conclufion,Plete and one of the premifes. And in this kind of fyllo- gifm, that propofition is omitted, whether it be themooly major or minor, which is fufficiently manifeft of it*Perfe& felf, and may cafily be fupplied by the hearers. Buton parts, and may be ap¬ plied either way; yet to amplify, is not to fet things in a falfe light, but to paint them in their juft pro¬ portion and proper colours, fuitable to their nature and qualities. Rhetoricians have obferved feveral ways of doing this. One is to afeend from a particular thing to a gene¬ ral. Thus Cicero, in his defence of Archias, having commended him as an excellent poet, and likewife ob¬ ferved, that all the liberal arts have a connexion with each other, and a mutual relation between them, in order to raife a juft efteem of him in the minds of his hearers, takes occafion to fay many things in praife of polite literature in general, and the great advantages that may be received from it. “ Yon will aik me, (fays he), why we are fo delighted with this man? Becaufe he fupplies us with thofe things, which both refrefh our minds after the noife of the forum, and delight our ears when wearied with contention. Do you think we could either be furnifhed with matter for fuch a variety of fuhje£ls, if we did not cultivate our minds with learning ; or bear fuch a conllant fatigue, without affording them that refreshment ? I own I have always purfued thefe iludies; let thofe be aihamed, who have fo given up themfelves to learning, as nei¬ ther to be able to convert it to any common benefit, nor difeover it in public. But why fliould it fhame me, who have fo lived for many years, that no ad¬ vantage or eafe has ever diverted me, no pleafure allured, me, nor deep retarded me, from this purfuit. Who then can blame me, or who can juilly be dif- pleafed with me, if I have employed that time in re¬ viewing thefe Undies, which has been fpent by others in managing their affairs, in the celebration of fefti- vals, or other diverfions, in refreshments of mind and 3 F body5 4t© ORATORY. Part II Difpofition. body, in unfenfonaMe banquets, in dice, or tennis ? And this ought the rather to be allowed me, be- caufe my ability as an orator has been improved by thofe purfuits, which, fuch as it is, was never want' ing to affift my friends. And if it be efteemed but fmall, yet X am fenfible from what fpring I muil draw thofe things which are of the greateft impor¬ tance.” With more to the fame purpofe; from which he draws this inference : “ Shall 1 not therefore love this man ? ihall I not admire him ? ihall I not by all means defend him ?” A contrary method to the former is, to defeend from a general to a particular. As if any one, while fpeaking in commendation of eloquence, fhould illu- ftrate what he fays from the example of Cicero, and ihow the great fervices he did his country, and the honours he gained to himfelf, by his admirable Ikill in oratory. Our common way of judging of the nature of things is from what we obferve in particular in- ftances, by which we form general notions concerning them. When therefore we confider the character of Cicero, and the figure he made in the world, it leads us to conclude, there muft be fomething very admi¬ rable in that art by which he became fo celebrated. And this tnethod he has taken himfelf in his oration for the Manilian law, where having firft intimated the fcarcity of good generals at that time among the Ro¬ mans, he then deferibes the virtues of a complete com¬ mander as a proof of it, and fhows how many and great qualifications are necelfary to form fuch a cha- rafter, as courage, prudence, experience, and fuccefs : all which he afterwards applies to Pompey. A third method is by an enumeration of parts. So when Cicero, upon the defeat of Mark Antony before Mutina, propofed that a funeral monument Ihould be erefted in honour of the foldiers who were killed in that battle, as a comfort to their furviving relations ; he does it in this way, to give it the greater weight: “ Since (fays he) the tribute of glory is paid to the heft and mod valiant citizens by the honour of a mo¬ nument, let us thus comfort their relations, who will receive the greateft confolation in this manner : their parents, who produced fuch brave defenders of the ftate ; their children, who will enjoy thefe domeftic examples of fortitude ; their wives, for the lofs of fuch hufhands, whom it will be more fitting to extol than lament ; their brethren, who will hope to re- femble them no lefs in their virtues than their afpee well acquainted with the force and propriety of is faid te command an inferior, to intreai a fupenor, and words; which ought to be duly regarded, fince the to deftre an equal Adjea.ves alfo, jvhich denote the perfpicuity of a difeourfe depends fo much upon it. Caefar feems plainly to have been of this mind, when lie tells us, “ The foundation of eloquence confids in the choice of words.” It may not be amifs, therefore, Elocution. properties of things, have their fignification deter¬ mined by thofe fubjedts to which they mod properly relate. Thus we fay, an honejl mlnd9 and a healthful body ; a wife mm;, and a fine houfe. Another way of L'afily he per into proper words and tropes. 1 h.cfe are called proper words, which are expreffed in their proper and ufual fenfe. And tropes are fuch words as are applied to fome other thing than whit they properly denote, by reafon of fome fimilitude, relation, or contrariety between the two things. So, when a fubtle artful man is called a fox. the reafon of the name is founded in a fimilitude of qualities. If we fay, Cicero will always live, meaning his works, the caufe is transferred to the effed. And when we are told, Cafar conqu 'ed the Gauls, we underhand that he did it with the afliltance of his army ; where a part is put for the whole, from the relation between them. And when Ciccio calls Antony a fine guardian of the fate, every one per¬ ceives he means the contrary. 4 But the nature and ufe of tropes will be explained more fully hereafter in their proper p’a. e All words mud at firft have had one original and primary fignification, which, ftriftly fpeaktng, may be called their proper fen 'e But it fometimes happens through length of time, that words lofe their original fignific .tion, and affume a new one, which then becomes thtir proper fenfe. So hoft/s in the Latin tongue at rit fignified a f ranger ; but af¬ terwards that fenfe of the word was entirely laid afide, and it was ufed to denote a public enemy And in our language, it is well known, that the word knave an¬ ciently fignified a fervant. The reafon of the change feems to be much the fame, as in that of the Latin word It 0 ; which fir it fignified a fotdier, but after¬ wards a robber. Bcfides, in all languages it has fre¬ quently happened, that many words have gradually varied from their firft fenfe to others fomewhrat diffe¬ rent ; which may, notwithftanding, all of them, when rightly applied, be looked upon as proper. Nay, in procefs of t me, it is often difficult to fay which is the original, or mol proper fenfe. Again, fometimes two or more words may appear to have the f me fig: ifica- tion with each other, and may therefore be ufed in¬ differently ; uniefs the beauty of the peri d, or fome other particular re fon, determine to the choice of one rather than another. O: th s kind are the words enfis and giadius in the Latin tongue ; and in ours, pity and compajfion. And there are other words of io near an affinity to each other, or at haft appear fo from vulgar ufe, that they are commonly thought to be fynony- incus. Such are the word:- mert.y and pity ; though mercy in its ftrift fenfe is exeve fed towards an ofien- dei, and pity refpcdls one in didrefs. s this pecu¬ liar force and dittinddion of words is carefully to ! e r.tten ed to, fo it may be known fcveral ways. Thus the proper fignific tisn of fubftantrves may be feen by their appliesi-ion to other fubftantives. As in the uifiance jutl now given, a perlon is faid to ffiew mercy pajjions. The proper fenfe of words may bkewife be known by obferving to what other words they are ei¬ ther oppofed, or ufed as equivalent. So in that paf- fage of Cicero, where he fays, “ I cannot perceive why you fhould be angry with me : If it be becaufe I defend him whom you accufe, why may not I be dif- pleafed with you for accufing him whom I defend ? You fay, I accufe my enemy ; and I fay, I defend my friend.” Here the words accufe and defend, friend and enemy, are oppofed ; and to be angry and dijpleaf’d, are ufed as terms equivalent. Lafily, the derivation of words contributes very much to determine thtir true meaning. Thus becaufe the word manners comes from the word man, it may propeily be applied either to that or any other put for it. And therefore we fay, the manners cf men, and the manners of the age, becaufe the word age is there ufed for the men of the age. But- if we apply the word manners to any other animal, it is a trope-. By thefe and fuch like obfervations we may perceive the proper fenfe and peculiar force of words, either by their connexion with other wards* difliudlion from them, oppolition to them, equivalency with them, or derv-tion. And by thus fixing their true and genuine fignification, we lhall eafily fee when they become tropes. But though words, when taken in their proper fignification, generally convey the plaineft and clcardl fenfe; yet fome are more forcible, ionorous, or beautiful, than others. And by thefe con- fidcrations we muft often be determined in our choice of them So whether we fay, he got, or he obtained,• the vitdory, the fenfe is the lame; but the latter is more full and fonorous. In Latin, timeo ligmfies / fear; pertimeo is moie full and fignificant; and pertnr.efco more fonorous th n either of the former. The Latin and Greek languages have much the advantage of ours in this refpedt, hy reafon of their comp fitions ; by the h Ip of which they can often exprelb that in one word lor which we are obliged to put two word5, and fome¬ times mot e. So pertimeo cannot be fully expreffed in our language by one word ; but we are forced to ]oini one or two p rtieles to the verb, to convey its juft idea, and fay, I greatly, or very much fear: and yet even then w'e fearce feem to reach its full force. As to tropes, though generally fpeaking they are not to be choicn where plainnels and perfpicuity of expreffioa is only defigned. and proper words may be found; yet through tiie penury of ail languages, the ufe of them is often ma !e neceffary And fome of them, efpecially metaphors, w'hich are taken from the fimilitude of things, may, wdien cuftotn has rendered them familiar, be conlidertd as proper woids, and ufed in their lb ad. Thus, w hether w’e fay, 1 fee your meaning, or, 7 under’- fandyour meaning, the fenfe is equally clear, though. the- 4i4 Elocution, the latter expreffion is proper, and the former meta- phorical, by which the aftion of feeing is transferred 45 from the eyes to the mind. A-othe II. But per/picuily arifes not only from a choice tion of fen- ftnS^ r^ordh but likewife from the conjlruaion tences. of them in fentences. For the meaning of all the words in a fentence, confidered by themfelves, may be very plain and evident; and yet, by reafon of a difor- derly placing them, or confuiion of the parts, the fenfe of the whole may be very dark and obfcure. Now it is certain, that the moft natural order is the plaineft ; that is, when both the words and parts of a fentence are fo difpofed, as bell agrees with their mu¬ tual relation and dependence upon each other- And where this is changed, as is ufually done, efpecially in the ancient languages, for the greater beauty and harmony of the periods ; yet due regard is had by the beft writers to the evidence and perfpicuity of the ex- prefiion. But to fet this fubjeft in a clearer light, on which the per left ion of language fo much depends, we fhall mention fame few things which chiefly occaiion obfeu- rity ; and this either with refpeft to Angle words, or their conflruftion. And firft, all ambiguity of expreffion is one caufe of obfeurity. This fometimes arifes from the different f'enfes in which a word is capable of being taken. So we are told, that upon Cicero’s addrefling himfelf to Oftavius Csefar, when he thought himfelf in danger from his refentment, and reminding him of the many fervices he had done him, Oftavius replied, He came the UJl of his friends. But there was a defigned am¬ biguity in the word lafl, as it might either refpeft the time of his coming, or the opinion he had oj^^is friendfhip. And this ufe of ambiguous words we fome* times meet with, not only in poetry, where the turn and wit of an epigram often rcfls upon it ; but like¬ wife in pxofe, either for pleafantry or ridicule. Thus Cicero calls Sextus Clodius the light of the fenate; which is a compliment he pays to feveral great men, who had diftinguifhed themfelves by their public fer¬ vices to their country. But'Sextus, who had a con¬ trary charafter, was a relation of P. Clodius, whofe dead body, after he had been killed by Milo, he car¬ ried in a tumultuous manner into the fenate-houfe, and there burnt it with the fenators benches, in order to inflame the populace againft Milo. And it is in allu- flon to that riotous aftion, that Cicero, ufing this am¬ biguous expreffion, calls him the light of the fenate. In fuch inflances, therefore, it is a beauty, and not the fault we are cautioning againff : as the fame thing may be either good or bad, as it is differently applied.— Though even in fueh defigned ambiguities, where one fenfe is aimed at, it ought to be fufliciently plain, otherwife they lofe their intention. And in all ferious difeourfes they ought carefully to be avoided. But ob¬ feurity more frequently arifes from the ambiguous con- ilruftion of words, which renders it difficult to deter¬ mine in what fenfe they are to be taken. Quintilian gives us this example of it: “A certain man ordered in his will, that his heir fhould ereft for him a ftatue bolding a fpear made of gold.” A queltion arifes here, of great confequence to the heir from the ambiguity of the exprtffion, whether the words made of gold are to be applied to the Jlatue or the fpear j that is, whe- Part IIP ther it was the defign of the teflator by this appoint- Elocution, ment, that the whole ftatue, or only the fpear, fhould1"* v-11'* be made of gold. A fmallnoteof diflinftion, different¬ ly placed between the parts of this fentence, would clear up the doubt, and determine the fenfe either way. For if one comma be put after the word Jlatue, and another after Jpeary the words made of gold muff be referred to the ftatue, as if it bad been faid, a Jlatue% made of gold, holding a fpear. But if there be only the fir ft comma placed after Jlatue, it will limit the words made of gold to the Jpear only; in the fame fenfe as if it had been faid, A Jlatue holding a golden fpear. And either of thefe ways of expreffion would in this cafe have been preferable, for avoiding the am¬ biguity, according to the intention of the teftator. The ancient heathen bracks were generally delivered in fuch ambiguous terms. Which, without doubt, were fo contrived on purpofe, that ,thofe who gave out the an- fwers might have room left for an evafion. See Oracle. Again, obfeurity is occafioned either by too fhort and concife a manner of fpeaking, or by fentences too long and prolix j either of thefe extremes have fome¬ times this bad confequence. We find an inflance of the former in Pliny the elder, where fpeaking of hel¬ lebore, he fays, “ They forbid it to be given to aged perfons and children, and lefs to women than men.” The verb is wanting in the latter part of the fentence, and lefs to women than men s which in fuch cafes being ufually fupplied from what went before, would here ftand thus ; and they forbid it to be given lefs to women than men. But this is direftly contrary to the fenfe of the writer, whofe meaning is, either that it is or¬ dered to be given in a lefs quantity to women than men, or not fo frequently to women as men. And therefore the word order is here to be fupplied, which being of a contrary fignification to forbid, exprefled in the iormer part of the fentence, occafions the obfeu¬ rity. That long periods are often attended with the fame ill effeft, muft be fo obvious to every one’s expe¬ rience, that it would be entirely necdlefs to produce any examples in order to evince the truth of it. And therefore we fhall only obferve, that the beft way of preventing this feems to be by dividing fuch fentences as exceed a proper length into two or more; which may generally be done without much trouble. Another caufe of obfeurity, not inferior to any yet mentioned, isparenthefis, when it is either too long or too frequent. This of Cicero, in his oration for Syl- la, is longer than we ufually find in him : “ O im¬ mortal gods ! (for I muft attribute to you what is your own ; nor indeed can I claim fo much to my own abi¬ lities, as to have been able of myfelf to go through fo many, fo great, fuch different affairs, with that ex¬ pedition, in that boifterous tempeft of the ftate), you inflamed my mind with a defire to fave my country.” But where any obfeurity arifes from fuch fentences, they may frequently be remedied by much the fame means as was juft now hinted concerning long and prolix periods; that is, by feparating the parenthefia from the reft of the fentence, and placing it either be¬ fore or after. So in this fentence of Cicero, the pa¬ renthefis may Hand lull, in the following manner :—. “ O immortal gods! you inflamed my mind with a defire to fave my country : for I muft attribute to you what is your own; nor indeed can I claim fo much to my ORA T O R Part HT# O R A T Kloentirtn. my own abilities, m to have been able of myfclf to go '—-’V"’--' through fo many, fo great, fuch different affairs, with that expedition, in that boifterous temped of the date.” This order of the fentence is very plain, and lefs in¬ volved than the former. Chap. II. Of Compcftion- 45 . . Compofi- Composition, in the fenfe it is here ufed, gives ti< n de- rules for the ftru&ure of fentences, with the feveral iivided1^ members, words, and fyllables, of which they confitt, in fuch a manner as may bed contribute to the force, beauty, and evidence of the whole. Compofition confills of four parts, which rhetori¬ cians call period, order, junclure, and number. The fird of thefe treats of the drudhire of fentences; the fecond, of the parts of fentences, which are words and members; and the two lad, of the parts of words, which are letters and fyllables. For all articulate founds, and even the mod minute parts of language, come under the cognizance of oratory. (> i. Of Period. 47 V . Period de- In every fentence or propofinon, fometbmg is laid fined and Qf fomething. That of which fomething is faid, logi- txpainei. cjang caj2 ang that which is laid of it, the predicate: but in grammatical terms, the former is a noun fubjlantive of the nominative cafe, and the latter a fnite verb, denoting affirmation, and feme date of being, adling, or fuffering. Thefe two parts may of themlelves conffitute a fentence : As when we fay, ‘The fun Jhines, or The clock jlrikes, the word fun and clock are the fubjedt in thefe expreffions, fines andJlrikes imply each the copula and predicate. Mod common¬ ly, however, the noun and the verb are accompanied with other words, which in grammatical condrudtion are faid either to be connedled with or to depend up¬ on them ; but in a logical confideration they denote feme property or circumdance relating to them. As in the following fentence : A good man loves virtue fr itfelf The fubjedt of this fentence is a good man; and the predicate, or thing affirmed of him, that he loves virtue for itfelf. But the two principal or necef- fary words, on which all the red depend, are man and loves. Now a Ample fentence confids of one fuch noun and verb, with whatever elfe is joined to either or both of them. And a compound fentence contains two or more of them ; and maybe divided into fo many didincl propofitions, as there are fuch nouns and verbs, either expreffed or underdood. So in the following fentence, Compliance gains Jiriends, but truth procures hatred, there are two members, each of which contains in it an entire propofition. For, Compliance gains friends is one complete fentence, and Truth procures hatred is another ; which are connedted into one compound fen¬ tence by the particle but. • Moreover, it frequently happens, that compound fentences are made up of fuch parts or members, fome if not all of which are them- felves compounded, and contain in them two or more limple members. Such is that of Sallud : “ Ambition Has betrayed many perfons into deceit; to fay one thing, and to mean another; to found friendfhip and enmity, not upon reafon, but intered ; and to be more careful to appear honed, than really to be fo.” This fentence confids of lour members; the laft of which 7 O R Y. 415 three, confiding of oppofite parts, are all compound- Elocution, ed, as will appear by expreffing them at length in thev“"''‘v J following manner : Ambition has betrayed many perfons into deceit; [that is, ambition^ has betrayed them to fay one thing, and to mean another; it has betrayed them to found friendjhip and enmity, not upon reafon, but interefl; and it has betrayed them to be more careful to appear honefl, than really to be fo. The three lad of thefe member#, beginning with the words it betrays, are all of them compounded, and confid of two oppolite members; which might each of them be expreffed at length in the fame manner, by fupplying the ellipfis. As, Am¬ bition has betrayed many perfons to fay one thing, and it has betrayed them to mean another. And fo of the red. From this indance we fee how much is left to be fup- plied by the mind in all difeourfe, which if expreffed would both dedroy its harmony and render it exceed¬ ingly tedious. But dill regard mud be had to that which is omitted, fo as to render what is faid confident with it ; otherwife there can be no propriety in what 18- fpoken. Nor can the members of a fentence be didin- guifhed and duly ranged in their proper order, without this. But to proceed: Some fentences con/id either wholly, or in part, of fuch members as contain in them two or more compound ones, which may therefore, for didinction’s fake, be called decompound members Of this kind is that of Cicero,, in his'defence of Milo : Great is the force of confcience, great either way 1 that thofe petfons are not afraid who have committed mo offence ; and thofe who have offended always think punifhment prefent before their eyes.” The latter member of this fentence, which begins with the word that, contains in it two compound members, which re- prefent the different date of mind between innocent and guilty perfons. And it is in the proper didin&ion and feparation of the members in fuch complex fen¬ tences, that the art of pointing chiefly confids. For the principal ufe of a comma is to divide the Ample members, a femicolon the compound ones, a colon fuch as are decompounded, and a period the whole from the following fentence. We mention this the rather, to fhow the different acceptation of thefe terms by gram¬ marians, from that of the ancient writers upon ora¬ tory. For thefe latter apply them to the fenfe, and not to any points of diftindtion. A very fhort mem¬ ber, whether Ample or compound, with them is a comma, and a longer a colon ; for they have no fuch term as a femicolon. BeAdes, they call a very flrort fentence, whether Ample or compound, a comma, and one of fome what a greater length, z.co/on. And there¬ fore, if a perfon expreffed himfelf either of thefe ways in any confiderable number of fentences together, he was faid to fpeak by commas or colons. But a fen¬ tence containing more words than will conAfl with either of thefe terms, they call a Ample period; the lead compound period with them requiring the length of two colons. However, this way of denominating fentences, and the parts of them, rather from their length than the nature of them, appearing not fo fuit- able, we have chofen rather to make ufe of the terms fmple and compound members ; and to call all thofe com- pound periods, which contain two or more members, whether Ample or compounded. But to proceed : Sentences, with refpeft to their form or compofition, are diftinguilhed into two forts, called 416 O R A T Elocution called by Cicero traBci, “ ftraight or direftand lj " contorta, “ bent or winding.” By the former are meant thofe whofe members follow each other in a di- red: order, without any infle&ion ; -and by the tatter, thofe which ftridly fpeakirg are c-illed periods. For ■a piot®- in Greek figniiies a circuit or circle. And fo the Latins call it circuitus and ambitus. By which both of them mean a fentenqe confiding of correfpondent parts, fo framed, that the voice in pronouncing them may have a proper elevation and cadency, and didin- gulth them by its inflexion ; and as the latter part • returns back, and unices with the former, the period, like a circle, furrounds and inclofes the whole fenfe. This elevation of the voice in the former part of the period, is by the Greeks called TrpoTcuns, and by the Latins propojitio ; and the depreflion of it in the bit¬ ter part, by the one K*°£o fo nei¬ ther would the tropes fuit our language, or he gene¬ rally underftood by us. And even in fuch tropes as are taken from the common nature of things, lan¬ guages very much differ. There is a very beautiful trope in the account of St Paul’s fh ip wreck, where it is faid, The /hip was caught, and could not hear up into the wind. The original word, that we tranflate bear up, is . and properly fignifies, to look or keep its eyes againjl it; which is a very ftrong and lively image, taken from animate beings, and when applied to men often fignifies to withjland or rejijl: as, a-.lofbco.ft&v txoKsy.iw to refijl an enemy; and Plutarch fays of Demofthenes, that he could not ado^Sax^v -xa a,Qyvpia>, look againjl or rejijl the power of money. Nothing is more common with Latin writers, than to call men of a public fpirit and true patriots, lumina et ornamenta rei- publica, that is, the lights and ornaments of the (late. And wc have borrowed from them the ufe of both thefe metaphors. But becaufe tropes and figures illuftrate and heighten the flyle, they call them alfo, lumina ora- tionis, or the lights of a difcourfe. It fometimes hap¬ pens, that only the tropical fenfe of a word is taken from one language into another, and not the proper fignification of the fame word. So fcrvpulus in Latin properly fignifies a little fcne, which getting into the fhoe hurts a perfon as he walks ; hence it is applied to the mind, and ufed to exprefs a doubt, or uneafy thought that gives it pain. We have borrowed this latter fenfe of the word, but not the former. . Art. I. Primary Tropes. 54 Metaphor, L Metaphor. A metaphor, as ufually defined, is, what. A trope, which changes words from their proper Jtgnifica- tion to another (liferent from it, by reafon of Jomefimilitude between them. But that a word, when ufed metapho¬ rically, does not alter its fignification, but retains its proper fenfe, was fhown above. However, it may not be amifs to explain this matter more fully, and fet it in a clearer light. Every metaphor, then, is nothing elfe but a fhort fimilitude. Cicero calls it, a fimilitude reduced to a (ingle word. And Quintilian to the fame purpofe fays, that “ a metaphor is a fhort fimilitude, and differs from it only in this, that the former is com¬ pared to the thing we defign to exprefs, and the latter is put for it. It is a fimilitude, when I fay of a man, he has afted like a lion ; and a metaphor, when l fay, he is a lion.” Thus far Quintilian. Now in every fimilitude three things are requisite ; two things that are compared together; and a third, in which the fimilitude or likenefs between them confifls. And therefore, to keep to this example, when Horace calls a Roman foldier a lion, if the word lion did not retain its proper fenfe, there could be no fimilitude; becaufe there would not be two things to be compared toge¬ ther with refpeil to a third, which is neceffary in every fimilitude, and was defigned by this expreffion. The fenfe of which is plainly this: That as a lion feizes his prey with the greateji fercenefs, fo a Reman foldier with like rage and jury attacked his enemies. In the fame manner, when Cicero calls Pifo the vulture of the province, his meaning is, that he was like a vulture, or a&ed in fuch a manner as a vulture afts, that is, rapa- cioully. So that the real difference between a meta- T 0 R J. 433 phor and a fimilitude confifls in this; that a metaphor Elocution, has not thofe figns of cemparifon which are expreffed * ' v'” # in a fimilitude. But fome perfons have run into mi- flakes in reafoning from tropes of this kind. For they have fo argued from metaphorical words, as if all the affecSlions and properties of the things expreffed by them might be attributed to thofe other things to which they are applied, and by that means have flrain- ed the comparifon (which has ufually but one parti¬ cular view), in order to make it tally in other refpe&s, where there is not that fimilitude of ideas. We will endeavour to make this evident by another example from Cicero, where he calls M. Antony the torch of the fate.' The fimilitude between Antony and a torch lay in this : That os ci torch burns ond dcjlroys every thing within its reach, fo Antony brought devajlation and ruin wherever he came. Nqw a torch has not on¬ ly a property to burn, but alfo to give light ; but tjie fimililude would not hold in this refpedb, nor was it at all defigned. For Cicero never calls a wicked pro¬ fligate man, as Antony was, the light of the fate; though he often gives that charafter to good and vir¬ tuous men, who by their examples do as it were en¬ lighten others, and fhow them the way to be h^ppy themfelves and ufeful to others. But though meta- ' phors are ufually taken from a fimilitude between two things, as in the inflances here mentioned ; yet fome¬ times they are founded in the fimilitude which two things bear to two others in fome particular refpect, by means whereof what properly belongs to one of them is transferred to the other : the former of which are called fimple metaphors, and the latter analogous. Hence the rudder of a fhip may be called its reins; for what the reins are to a horfe, that the rudder is to a fhip in guiding and directing it. So that here is a double fimilitude, one between a fhip and an horfe, and another between the rudder of the former and the reins of the latter ; and from the analogy between the ufe of the rudder to the one and reins to the other,, the reins, which belong properly to the horfe, are ap¬ plied to the fhip. Again, fome metaphors are recipro¬ cal, in which the fimilitude holds either way. Thus to fleer and to govern are ufed reciprocally both of a fhip and a ftate : the proper expreffions being, to feer a faip, and. govern a fate; and the contrary metaphori¬ cal. But though we fay, the foot of a mountain, bor¬ rowing the fimilitude from animals; yet we do not fay, on the contrary, the bottom of an animal, meaning his feet; and therefore that metaphor is not reciprocal. From this account therefore of the nature of a meta¬ phor, it may be faid to be, 1 he application of a word by way of fmilitude to fome other thing than what it pro- perly fignifies. And the plainer this fimilitude appears, ', the greater beauty there is in the trope. rl he ufe of metaphors is very exteniive, as large as univerfal nature. For there are fcarce any two thin-Ts which have not fome fimilitude between them. How¬ ever, they may all be reduced to four kinds; which waa^ the fecond thing propofed to be confidered. 1 he firff kind of metaphors therefore may be taken t from fimilitudes between animate beings. As where thofe things, which properly relate to brutes, aie ac¬ commodated to men ; or thofe which belong to men are applied to brutes. Of the former fort is that joke<- of Cicero » My brother being af;ed by Rhilip, why he larked'- 424 'Elocution, larked foP anfVered, Eccaufe he faw a thief. Here —' barking, the property of a dog, is applied to a man : And the reply does not feem to carry more feverity or harfhnefs with it than the queftion. By the latter fort we fay, a crafty fox, and a generous horfe ; which are affe&ions that propeily relate to men. And to this kind of metaphors may thofe likewife be referred, when that which properly belongs to the fenfes is applied to the mind. Thus we often fay that for inftance, it is faid. All the fouls which came with jfacob into Egypt, meaning the perfons. And again, The foul that Jmneth it Jhall die ; from which expref- fion, and others of the like import, fome perfons, by not attending to the nature of this trope, have been erroneoufly led to infer that the foul is naturally mor¬ tal. But fometimes only part of the matter Hands to exprefs the whole efi'ence or being. So we imitate the JLatins in ufing the word caput or head to denote either a perfon or thing. For, as with them lepidum caput, fo with us a witty head, fignifies the fame as a man of wit. And in the fame fenfe, fo many head of cattle means fo many entire cattle. By the fifth fort of fynecdoche, the whole of any material thing or quantity, whether continued or dif- crete, is put for a part of it. So when Cicero fays, A war is kindled through the whole world, in compliment to his country, he calls the Roman empire the world. And this expreffion is alfo ufed by hiftorians. Thus Cornelius Nepos, fpeaking of the quarrel between Mark Antony and Augultus, tells us, that each of them defred to be lord of the world. And in like man¬ ner St Luke fays, There went out a decree from Cafar 3 H 2 Augujhts, 428 O R A T Elocution, duguftus, that all the world Jhould be taxed. So In St v Paul’s ihipwreck, it is faiil, They rein the Jhlb a- ground, that is, the head of her, for it is plain by what follows, that the {fern was loofe. And as to diferete quantity, our Saviour, ufing this trope, faid he Ihould be three days and three nights in the heart of the earth. Though he did not continue three whole days and nights in the grave, but only part of the firft and third day, and the whole fecond day, with the two whole nights between the fiitt and third day, according to our way of reckoning. For he was buried on Friday in the afternoon, and relied in the grave that night, with the following day, which was the Jewilh Sab¬ bath, and was rifen on the morning of the next day. So that we muff neceffarily have recourfe to this fy- mcdoche, which puts the whole for the part, to clear up that event. By this kind of fynecdoche, alfo, the plural number is fometimes put for the lingular. Thus St Matthew fays, The thieves who were crucified with our Saviour reviled him: though it is plain from St Luke, that only one of them did fo. It may alfo be referred to this trope, when a certain number is put for an un¬ certain one. So it is an ufual way of expreflion to fay, I have f en or done fuch a thing an hundred or a thoufand tinirs ; when perhaps fo many are not really intended, but only in general fome confiderable num¬ ber. The fixth and lall kind of fynecdoche puts a part of any material thing or quantity for the whole of it. So we fay of a man, He Jhelters himfelf under fuch an one's roof; that is, in his houfe. And of a fleet, that it confijls of fo many fail; meaning,/o many Jhips. And by this trope, that is aferibed to a fingle perfon which was done by the afiiftance of others, and in conjunc¬ tion with them : As when it is faid, that Hannibal killed forty thoufand Romans at the battle of Cannte ; For an army is an aggregate body, of which the ge¬ neral is the head, and confequently the chief part of it. And to this kind of fynecdoche may alfo be re¬ ferred fuch expreffions in which the Angular number is put for the plural: as if one fliould fay, H man is liable to be mifled by the influence of irregular pafjions ; meaning all men, or mankind in general. Or when lefs than the real number is put for any round number: Thus iome ancient writers, when they fpeak of the Grecian armada that came againll Troy, call it a fleet of a thoufand Jhips; though, according to Homer’s lift, it contained 1186. And fo likewife the Greek interpreters of the Old Teftament are ufually called the Seventy; whereas, in reality, they were feventy- two. 57 IV. Irony. This is a trope in which one contrary is neJ1 and6il- h another: As if any one fhould fay, Well luftraced. donei when at the fame time his defign is to intimate that the thing was ill done. So that, by this manner of expreffion, the fpeaker appears to mean fomething contrary to the fenfe of the word he makes ufe of. Not that the word is changed from its ufual fignifi- cation ; but by the circumftances attending the ex¬ preflion, we perceive the contrary to what is fpoken is intended. Quintilian obferves, that an irony may be known one of thefe three ways: “ By the manner of pronunciation, or from the nature of the perfon or the thing, tor (as he adds) where any of thefe do 0 R Y. Part nr. not fuit with the words, it is plain the fpeaker intends Elocution. the contrary." The irony is very plain from the' manner of pronunciation in that paflhge of Terence, where Sima, fpeaking to his fervant by way of re¬ proof, fays, “ You have taken great care indeed." From the circumftances of the perfon, when Cicero, addrefling to Catiline, fays, “ He went to your com¬ panion, that excellent man, Marcus Marcellus.” When he calls him an excellent man, it is evident he means the contrary ; becaufe no good man would baa com¬ panion of Catiline. And when he begins his oration for Ligarius with faying, “ Casfar, this is a new crime, and never heard of till now," the thing he is fpeaking of fttows it to be an irony ; for it was not new, as all who were prefent very well under- ftood. The fubje&s of irony are vices and follies of all kinds. And this way of expofing them is often more efte&ual than ferious reafoning : For many perfons, who, either from temper or want of refledtion, cannot be moved by the force of an argument, are not proof againft the poignancy of wit and raillery. And there¬ fore we find the mott grave and ferious perfons have not declined the ufe of this trope upon proper occa- fions. Socrates, whom the oracle pronounced the wifeft* man of his age, gave fo much into it, that he got the name of that is, the droll. In the facred writings we have a remarkable inftance of it in the prophet Elijah, where he challenges the priefts of Baal to prove the truth of their deity : For it is faid expreisly, “ He mocked them, and faid, Cry aloud, for he is a god ; either he is talking, or he is purfuing, or he is on a journey, or peradventure he fleepeth, and muff be awaked.” And Solomon takes the like me¬ thod to expofe the follies of youth by this ironical apoftrophe, “ Rejoice, O young man, in thy youth," wfith what follows, which is all ironical. Nay, our Saviour himfelf thought fit thus to reprove the Jewifli dodtors, when he fays, “ Full well ye rejedf the com¬ mandment of God, that ye may keep your ow:>y tradi¬ tion Where, by the words full well, or, as it is in the original, xaxwr, it is very evident that a fevere re¬ primand was intended. An irony is ufed on a variety of occafions, as we fhall ftiow from fome inflances in Cicero. Sometimes he applies it in a way of jeft and banter: As when he fays, “ We have much reafon to believe the modeft man would not afle him for his debt, when he purfues his life.” At other times by way of infult and deri- fion : Thus when he would reprefent the forces of Ca¬ tiline as mean and contemptible, “ O terrible war, (fays he), in which this band of rakes are to march under Catiline! Draw out all your garrifons againft; this formidable body." Again, at other times, to give the greater force to his argument, he would feem as it were by this trope to recal and corredf what he had faid before ; as in his oration for Milo: “ But it is foolifh in ns to compare Drufus, Africanus,Pompey, and ourfelves, with Clodius ; all our calamities were tolerable, but no one can patiently bear the death of Clodius.” Now the chara&er of Clodius was fo well known, that all who were prefent muft be fenfible he meant the contrary. And, to name no more, an iro¬ ny is never ufed to greater advantage, than when it is followed immediately by fomething very flinging. Thus* PartHI. Elocution. Thus, fpeaking of Pifo, he fays ' this philofopher : he denies that he was ever defirous of a triumph.” And then addrefling himfelf to him, he immediately adds, ‘‘ O wretch! when you de- ftroyed the fenate, fold its authority, fubje&ed your confulate to the tribune, overturned the Hate, be- trayed my life and fafety for the reward of a pro¬ vince; if you did not ddire a triumph, what can you pretend you did not defire ?” This muft effectually confound the falfe gravity at that time affumed by Pifo. Art. II. Secondary Tropes. 58 Secondary Secondary tropes are fo called, becaufe they are Tropes fi- all of the fame nature with the former, and maybe re- milann na-fcrred to fome or other of them, though they have re- ° ceived different names. name, to They are chiefly ei^ht in number ; Antonomafia^ the former Communication, Litotes^ Euphemifm, Catachrejis, Hyper- ones. Metalepftsy and Allegory. The three firft of thefe are limple tropes, and may all be referred to a Synecdoche. But the five laft are of a mixed or com¬ plex nature, and not confined to any one of the pri¬ mary tropes ; as will appear in treating upon them in order. 59 I. A common or general word is fometimes ufed for word^often tf16 ProPer name Qf fome particular thing or perfon ufed by way which upon any account is eminent and remarkable, of emi- So we fay, He is gone to the city, or he came from the ci- nence for ^ London. And by the Scriptures we mean remark-'1*’ the Bible. So likewife, in fpeaking of perfons, the able. orator is ufed for Cicero, the poet for Homer or Virgil, and the philofopher for Ariftotle : and it is not unufual to fay the apoJlley when we mean St Paul. On the contrary, the proper names of things or perfons are fometinaes applied to any other of the fame charafter. Thus we ufe the word gofpcl for any certain and un¬ doubted truth. And Carthaginian faith proverbially flood for the greateft falfehood and deceit among the Romans. With the Greeks, Hercules fignified aJlrong many Nejlor a wife many and Irus a beggar; and the names of Samfony Solomon, and jfoby now anfwer the like characters. Both thefe ways of expreffion are often very emphatical, and heighten the idea more than where things are expreffed by their own name. To call a good orator Cicero, or an excellent poet a fccond Virgil, includes not only an encomium upon the arts themfelves, but leads the mind to what is moft perfect in them, and was peculiar to thofe perfons. Thefe forms of fpeech are called antonomajia, and come properly under a fynecdoche ; for in the former the whole is put for a part, and in the latter a part for the whole. II. Nothing is more common with orators, than a change of perfons. Sometimes, to avoid envy, and common m prevent the imputation of pride, in afluming to them- •ratory. ielves the praife of any laudable aCtion, they aferibe it to their hearers, and do not fay, we, but ye did fo and fo. At other times, when it is neceflary to remind them of fomething which they have done amifs, or to caution them againft fome wrong ftep for the future ; to prevent giving offence, they take it upon them- felves, or at leaft join themfelves with them, and do sot fay, you have done thisy or do not you do this j but, 429. 61 60 A change of perfnns ORATORY. You have heard we have done it, or let us not do it. And again, at other times, in compliment to their hearers, they join them ' as partners in the commendable actions or virtues of other perfons; as when the whole body of the people is brought in to fhare the praife aiifing from the fuc- cefs of wife counfels or victorious arms. Such ways of fpeaking often occur both in Demofthenes and Ci¬ cero. They are called communication, and come pro¬ perly under a fynecdoche of the whole. III. On the contrary, there is a mode of fpeech, Litotes, in which, by denying the contrary, more is intended 'b'^cre> ^7 than the words exprefs. This way of fpeaking is call- contrary, ed litotes ; and is often ufed for fake of mode Ay where more is a perfon is led to fay any thing in his own praife, or meant tham to foften an expreflion which in direct terms might‘sexPre^e^* found harih or give offence. As if one fhould fay, I do not commend you for that; meaning, 1 greatly dijcom¬ mend or blame you for it : where more being under- flood than the words exprefsly denote, it is properly a fynecdoche of the part. Not that this manner of fpeaking is always to be fo interpreted ; but where it is not, there is no trope ; which muft be judged of by the circumftances of the difeourfe. But that it fre¬ quently is fo ufed, might be ealily fhown from many inflances ; though it will be fufficient to mention two or three. Cicero fpeaking of Cotta, calls him no mean orator, whom he had juit called a very great orator. And he fays of Varro, that, “ he purfued his ftudies not without induftry ; and afterwards gives him the character “ of„a man of the greateft application.” Which paffages, compared together, plainly (how the import of thofe negative exprelfions. And a friend of. Cicero, writing to him, begins his letter thus : “ Al¬ though I am fenfible the news I fend you will not be very pleafant.” This news was concerning the death of another friend of Cicero’s; and there by the words not very pleafant, muft, to be fare, be meant very an- pleafant and melancholy ; but he chofe that expreffion in the beginning of his letter, as the fofteft and leaft: ftiocking, the better to prepare him for the following account of what that news was. And in this way inter¬ preters explain that paffage in St Matthew: And thou Bethlehem in the land of 'Judah are not the leaf among the princes of Judah ; where, by not the leaf, they under- ftand the greatef, or very great, upon account of the honour it received by the birth of our Saviour, as the words immediately following plainly intimate. ^ IV. When any difpleafing or ungrateful thing is Ungrateful; expreffed by a more foft and agreeable word, it is call-things forc¬ ed euphemifm. And as the word made ufe of is either ene<^ hy a. contrary to the proper word, or only different fro™ Ie it, it may be referred to different tropes. The Latina have a foft way of expreffing their difregard to a per¬ fon, by laying valeat ; which we have borrowed from them, and fay, fire him well. When the contrary be¬ ing intended to what is expreffed, it comes properly under an irony. And as the word death carries in it an idea that is difagreeable to human nature, inftead of laying a perfon is dead, we often fay he is deceafed, or departed; which we have alfo taken from the La¬ tins, who ufe the words dec fit and obiit in the fame fenfe. So that in both languages it comes under a, fynecdoche of the whole ; to depart out of life being one fort of departure. But when the evangelift fpeak- ing of Stephen; who was ftoned to death; expreffes it. % 43° ORATORY. Elocution, by faying tint he fell rfleepi this is a beautiful mcta- in this expreffion there is a metalegns. v ‘ phor, taken from the fimilitude between the death of * ’ ’ a good man and fleep. Catachrefis V. Calachrefts dignifies in general any harfli trope, or harfh though it is moll commonly found in metaphors It tropes. is principally ufed by poets, who make choice of it for novelty, or to enforce an exprefiion, where the proper word does not feem ftrong enough. As when Milton, in defcribing the angel Raphael’s defcent from heaven, fays, he 64 Hyperbole Sails bet-zveen auorlJs and worlds ; where the novelty of the word enlivens the image more than if he had fud files. But it is fometimes found in the graved authors, and even in the facred writings. So we read of the blood of the grape. And Solomon fays, the horfedeech hath two daughters. In all thefe in- llances the trope is a metaphor. But when St John fays in the Revelations, / turned to fee the voice that fpake to me, it is here a metonymy of the adjunft; the word voice being put for the perfon who uttered it. In St Matthew we read of Simon the leper; not that he was then a leper, but had been fo, and was cured; which is a fynecdoche of the part. And when a crimi¬ nal is faid to have had his reward, that is, his punifli- ment, it is an irony. VI. Hyperbole is the boldeft of all tropes ; for it ex- ihc boldeft ceeds the drift bounds of truth, and reprefents things 'j... ^ either greater or lefs, better or wnrfe, than they really are. But the reprefentation is made in fuch a man¬ ner as noc to impofe on the hearers. For an hyperbole is not ufed to define or deferibe any thing accurately, but only to magnify or deprefs it in a confiderable de¬ gree, when we either cannot or do not choofe to re- prefent it exaftly. The excefs in this trope is called tmxefis; as when we fay of any thing that is very high, it reaches to the Jkies. The defeft, or contrary extreme, is termed meiofis : So we fay of a very lean perfon, he is nothing butfhin and bones, or a merefheleton. It is principally metaphorical, but fometimes taken from other tropes. When Saul and Jonathan are faid to have been fwifter than eagles, and Jlronger than lions, the expreffion is founded in fimilitude, and is therefore a rm t phor. When, indead of faying Cato was a ve¬ ry virtuous man, the hidorian calls him the image of virtue; it is an hyberbolical metonomy of the adjunft for the fubjeft. And when we read in the Mofaic hidory of cities fenced up to heaven, there is a fynecdoche. But if a man of weak fight be faid to be eagle-eyed, it is an irony. Thofe hyperboles which are exprefied comparatively, are commonly mod emphatical, becaufe they fiiow a peculiarity in the excefs. To fay a thing is as light as a feather, carries the idea very far ; but to fay it is lighter, not only carries it dill farther, but alfo heightens it, by leaving the mind at an uncertainty where to fix the limits. 65 VII. Sometimes two or more tropes, and thofe of MeViepfis^ g;fferent- JcJnc]j are contained under one word ; fo that leveral gradations, or intervening fenfes, come between the word that is exprefied, and the thing de- figned by it. And this is called a metalepfis. The contefts between Sylla and Marius proved very fatal to the Roman date. Julius Csefar was then a young man. Bui Sylla obferving his afpiring genius, faid of him, “ In one Ctsfar there are many Manufes.” Now where tw or more tropes are meant un¬ der one word. Part III. For the word Elocution. Marius, by a fynecdoche, or antonoinafa, is put for any —v-— ambitious and turbulent perfon ; and this again, by a metonymy of the caufe, for the ill effefts of fuch a tem¬ per to the public. So that Sylla’s meaning, diveded of thefe tropes, was, that Casfar would prove the moil dangerous perfon to the Roman date that ever was bred in it: which afterwards proved true in the event. So when Virgil, defcribing that part of the African -coatl where Aineas anlved with his ihips, fays, si dark wood hung over k ; the word daih, by a metonymy of the efleft, is put iovfhady, and that again by the fame trope for thick ; for his meaning is, a thick wood. But the words of Dido, in the fame poet, contain a larger gradation, when ihe lays, Happy, ah truly happy, had I been, if TrojanJhips our coafls had never fetn. In which expreffion, fird by a metonymy of the ad¬ junft, the fiups are put for the Trojans in the Ihips: and thefe, by a fynecdoche of the whole, for iEneas, who was one of them ; and again his arriving on the coad, by a metonymy of the caufe, for her feeing him; and laflly, her feeing him, by the fame trope, for the pafiion fhe had for him. So that her meaning is, {he had been happy, if {liehad never entertained a paffion for iEneas. This trope is more frequently to be met with in poets than in orators, as they take greater li¬ berty in ufing diftant allufions than is fuited to that perfpicuity of exprefiion which is required in oratory. But as Quintilian has well obfewed, all the interme¬ diate links of the chain in this trope are of no further ufe than to lead the mind gradually from the fird Jo the lad, the better to perceive their conneftion. As in the example lad mentioned, relating to lAido, if we drop all the intervening fieps, and conneft the words exprefied with what is direftly intended, they will be found to contain a very remote caufe put for the ef- feft, which comes under a metonymy. On the contra¬ ry, in the fecond example, where dark (lands for thick, the effeft is put for a remote caufe. And the fird, which is founded in a fimiiitudeof temper between Cas¬ far and Marius, belongs to a metaphor. ^ VIII. Allegory. As a metalepfis comprifes feveral Allegory tropes in one word, fo this is a continuation of feveral continua- tropes in one or more ftntences. Thus Cicero fays, tion of “ Fortune provided you no field, in which your vir- tropes thro tue could run and difplay itfelfwhere the words en" felcl and run are mataphors taken from corporeal things, and applied to the mind. And in another paflage, fpeaking ©f himfelf, he fays, “ Nor was I fo timorous, that after I had (leered the (hip of the ftate through the greated dorms and waves, and brought herfafe into port, 1 fiiould fear the cloud of your fore¬ head, or your colleague’s pedilent breath. I faw other winds, I perceived other dorms, I did not withdraw from other impending tempeds ^ but expofed myfelf fingly to them for the common fafety.” Here the (late is compared to a (hip, and all the things faid of it un¬ der that image are exprefied in metaphors made ufe of to fignify the dangers with which it had been threat¬ ened. And indeed allegories generally confift of me¬ taphors ; which being the moil beautiful trope, a num¬ ber of them well chofen and put together is one.of the fined and brighted ornaments in language, and 3 . ' /■ exceeds * Part Til. ORA Elocution, exceeds a Tingle metaphor in lullre, as a conftellation v ' does a feparate ftar. It is true, that allegories are fometimes found in other tropes ; but this is very rare. In that known expreffion of Terence, the tropes are all metonymies : Without Ceres and Bacchus, Venus grows cold ; that is, diveiled of the tropes. Without meat and drink, love dies. And Samfon’s riddle is made up of fynecdo'hes: “ Out of the eater came forth meat, and out of the llrong came forth fweetnefs.” But there is no fmall IkiU required in the right manage¬ ment of allegories For care fhould be taken, that the fame kind of trope be carried thi'ough the whole, fo as to compofe one uniform and confident fet of ideas : otherwife they drefs up a chimera, a thing that has no exiilence, and of which the mind can form no perception. And, as Qjuintilian fays very juftly, *• to begin with a tempelt and end with a fire, would be very ridiculous and unnatural.” It is likevvife very necefiary that the allufions be all plain and evident, cfpecially where the name of the thing alluded to is uot exprefled. Thefe are called pure allegories. As that of Cicero : “ So it happens, that I, whofe bufi- nefs it is to repel the darts, and heal the wounds, am obliged to appear before the adverfaries have thrown any dart ; and they are allowed a time to attack us, wfien it will not be in our powerto avoid the affault; and if they throw a poifonous dart, which they feem pre¬ pared to do, we lhall have no opportunity to apply a remedy.” The tropes here are all taken from mili¬ tary affairs, without any intimation what they are ap¬ plied to. But that is plain from the context of the difcourfe. For he is fpeaking of the difadvantages he laboured under in defending his client againft thofe of the oppofite fide, and fo applies- to the bar thefe terms which were proper to the field. But where the reference is not evident, it becomes a riddle : which is nothing tlfe hut an obfeure allegory. To avoid this, therefore, the beft writers generally ufe what they call mixed allegories ; that is, fuch wherein the proper name of the thing is exprelfed, which the whole fimili- tude refpefts. Of this kind is that in the fpeech of king Philip of Macedon, given us by Juftin, where he fays, “ 1 perceive that cloud of a dreadful and bloody war arifing in Italy, and a thunder-Rorm from the wefi, which will fill all places with a large fhower of blood, wherever the tempeft of vitRory {hall carry it.” The proper words war, blood, and viBory, being join¬ ed to the tropes cloud, Jhower, and tempejl, in this fen- tence, render the feveral parts of the fimilitude plain and evident. Quintilian thinks thofe allegories mofi beautiful, where the whole fimilitude is exprefled, and tbofe words, which in their proper fenfe relate to one of the two things between which the comparifon is made, are allegorically applied to the other As when Cornelius NeposTays of Atticus, “ If that pilot gains the greatefi reputation who preferves his fit ip in a boulerous and rocky fea ; ought not he to be thought a man of fingular prudence, who arrived in fafety through fo many and fo great civil tempefis ?” Thefe are the allegories with which orators are chiefly concerned. § 2. Of Figures. This term feems to have been borrowed from the ftage, where the different habits and geftures of the TOR Y. 432 adlors, fuitable to the feveral characters they fuflalned, Elocution, were by the Greeks called c-^w-xar*, and by the Latins ^ jlgura ; And ft is not unnfua! with us to fay of a per-^jg tgrm fon, both with refpect to his drefs and aCtion, that \\tfigure appa- makes a very bad, or a very graceful, figure. And as revtly bor- language is the drefs, as it were, of our thoughts, ‘n which they appear and are reprefented to oth.rs ; fo 0 * any particular manner of fpeaking, may, in a large fenfe of the -word, be called its figure, in which lati¬ tude writers fometimes ufe it. But rhetoricians have reftrained the fenfe of the word to fuch forms of fpeech as differ from the more common and ordinary ways of exprefiion ; as the theatrical habits of actors, and their deportment on the Rage, are different from their ufual garb and behaviour at other times. A figure therefore, in the fenfe it is ufed by rhetoricians, is, A mode of fpeaking different from, and more leaut'ful and emphatical than, the ordinary and ufual way of exprejfing the fame fenfe ; or, in other words, That language which is fuggjled either by the imagination or the pa fans. Now as the habits and geftures of our bodies are in a man¬ ner infinitely variable, fo it is plain that the different forms of fpeech are almofi innumerable. But every alteration from the common manner ought not to be eReemed a figure, nor defer ves that character. It rnuR contain fome beauty, or exprefs fome pallion, to merit a place among rhetorical figures, and be marked out for imitation. The fubjedt 0$figures feems to have been one of the lafi things which was brought into the art of oratory* in order to complete it. AriRotle, who treats fo ac¬ curately upon other parts, fays very little of this. But the Greek writers who came after him have abundantly fupplied that deficiency. It is to them we owe the chief obfervations that have been made on this fubjedf. They took notice of the feveral modes and turns of exprefiion, obferved their force and beauty, and gave them particular names by which they might be known and diftinguifiied from each other. And indeed they have treated the matter with fuch. miuutenefs and fubtilty, that Quintilian feems, not without reafon, to think they have multiplied figures to an excefs. But though it was fo late before they were taken notice of, and introduced into the art of fpeakingi yet the ufe of them in difcourfe was doubt- lefs very ancient. The author of Homer’s life, which fome have afenbed to Plutarch, has fhown, by ex¬ amples taken out of him, that there is fcarce a figure mentioned by.rhetoricians, but is to be met with in s that moR ancient poet. And, if we confidr.r the na¬ ture of fpeech, we fhall eafily perceive that mankind muft have been under a neceflity very early to intro¬ duce the ufe of tropes for fupplying the want of pro¬ per words to exprefs their fimple ideas: fo the like neceffity muR have put them upon the ufe of figures to reprefent their different paffions. Though both of them were afterwards increafed, and improved in fuch a manner as to become the chief ornaments of lan¬ guage. The paflions of men have been always the fame ; they are implanted in us by nature, and w£ are alPtaught to difeover them by the fame ways. When the mind is diRurbed, we fhow it by our countenance, by our aftions, and by our words. Fear, joy, anger, alter the countenance, and occafion different emotions and geftures of the whole body. And we know with what- 43* O R A T Elocution, what paffion a man is afft&ed, by hearing his words, ' though we do not fee him. He does not exprefs him- felf as he usually does at other times when cool and ftdate. Objefts appear to him in a different view, and therefore he cannot but fpeak of them in a diffe¬ rent way. He interrogates, he exclaims, he admires, he appeals, he invokes, he threatens, he recals his words, repeats them, and by many other different turns of expreffion varies his fpeech no lefs than his counte¬ nance, from his common and ordinary manner. Now as nature feems to teach us by thefe figurative ex- preflions how to reprefent the different commotions of our minds, hence fome have thought fit to call figures the language of the pojjions. And as thefe are given us, among other wife ends, to excise us the better to pro¬ vide for our prefervation and fafety, this is done fome- times by force bf arms, and at other times by difcourfe. And therefore Cicero very handfomely compares the conduct of an orator to the exercifes of the pakeftra : in which, as each combatant endeavours not only to defend himftlf, and attack his adverfary, but likewife to do both with decency; fo the principal weapons of an orator, as he reprefents them, are figures, which being no lefs the ornaments of language than images of our paffions, anfwer all thefe purpoffs. Befides, figures chiefly diftinguifh the different kinds of ftyle, ffurnifh it with an agreeable variety, and often ferve to reprefent things in a clear and forcible manner. From this fhort account of the nature of figures, the advantage of them to an orator is very evident. They are a fort of natural eloquence, which every one falls into without attending to it, fuitably to that temper of mind with which he is affefted himfelf, and is defirous to affedt others. In a cool and fedate dif¬ courfe, fuch figures as convey our fentiments with the greateft ftrength and evidence are moft proper. And there are others, which are fuited to brighten and en¬ liven more gay and fprightly fubjedts. Others again are more peculiarly adapted to exprefs the diforders and perturbations of the mind. To repeat the fame thing again would many times be deemed a tautology pjid impertinent; but to do this when the mind is ruffled, is not only allowable, but the repetition ren¬ ders it more ftrong and affedting. So likewife to in¬ terrogate, exclaim, or admire, under the influence of a pafilon, impreffes the hearers, and difpofes them to attention; whereas at another time perhaps fuch ways of fpeaking would fcarce be confiftent with prudence. There is a natural fympathy in mens minds, which difpofes them to receive impreflions from thofe with whom they converfe. Thus one gay and pleafant companion gives a cheerfulnefs and vivacity to a avhole company ; whereas, on the contrary, one who is dull and phlegmatic damps the fpirits of all about him, and affedts them with the fame gloomy temper. Figures are peculiarly ferviceable to an orator for an- fwcring thefe different intentipns. And as he finds thena in life, from thence he muff copy them ; as a painter does the features of the countenance, and the feveral parts of the body; figures being to the one what lines and colours are to the other. The defign of Catiline to deftroy the Roman ftate and burn the city, is a ftory well known. There was an army* drawn to¬ gether at a proper diftance to favour the undertaking; and others were left in Rome, who had their parts NQ 251. O R Y Part III, affigned them for burning the city, and deftroying elocution, thofe who Ihould efcape the flames. And in a word, every thing was ready for putting in execution this horrid and barbarous fcheme. So that nothing re¬ tarded it but the taking off Cicero, who was then conful, which was thought neceffary to be done fivft. Cicero, upon information of the defign againft his life, finds means to prevent it, and the fame day calls together the fenate. And Catiline, who was a man of confummate boldnefs, had the confidence to ap¬ pear in that affembly. Upon their meeting, Cicero opens to them the whole affair of the confpiracy, and the defign againft himfelf, in a moft warm and pa¬ thetic harangue. In which he had two things in view ; to raife the indignation of the fenate againft the confpirators, and particularly againft Catiline ; and, either by terrifying or exafperating him, to oblige him to leave the city. Now he does not begin this fpeech in his ufual manner at other times, by addreiling to his audience, befpeaking their favour and attention, or letting them gradually into the de¬ fign of what he was about to fay; but as Catiline was prefent, he immediately falls upon him with vehemence, in the following manner : “ How far, Catiline, will you abufe our patience i How long will your fury infult us ? What bounds will you fet to your unbridled rage ? Does neither the night-guard of the palace, nor the city-watch, nor the peoples fear, nor the agreement of all good men, nor the meeting of the fenate in this fortified place, nor the countenances and looks of this affembly, at all move you ? Do not you perceive your defigns are difco- vered, and that all who are prefent know of your con¬ fpiracy ? Who of us, do you think, is ignorant of what you did the laft night, and the night before, where you was, who were with you, and what you refolved on ? O times, O manners! The fenate knows this, the conful fees it; and yet this man lives!—lives? nay, comes into the fenate, joins in the public counfels, ofeferves and marks out each of us for deftrmftion !’* And in the fame impetuous'ftrain he proceeds through his wdiole fpeech, interfperfing a great variety of the like ftrong and moving figures. And the difcourfe had its defired effedl: for when Catiline ftood up afterwards to make his defence, the whole fenate was fo inflamed, and their refentments againft him rofe fo high, from what Cicero had faid, that they had not patience to hear him fpeak; upon which he left both them and the city. Had Cicero, inllead of venting his juft indignation againft the author of fo barbarous and inhuman a defign, in the manner he did, by figures fuited to ftrike the paffions of his hearers ; had he, inftead of this, attempted to reafon with him, and told the ftory in a cold and lifelefs manner, he would have expofed himfelf to the contempt of Catiline; and by leaving the fenate little or nothing moved at what he faid, prevented perhaps their coming to thofe fpeedy and vigorous nfolutions which were neceffary at fo critical a jun&ure. Let us fuppofe him to have expoftulated with Catiline in much the fame words as before, but thrown into a different form, and diveiled of thofe pathetic figures. As thus: “ Catiline, you have really abufed our patience to a great degree. You have infulted us with your furious proceedings a lonz while. You feem to have fixed no bounds to 4 your Part Itr. • ORA Elocution, yonr unbridled rapfe, Neitlier the night guard of the palace, nor the city-watch, nor the peoples fear, nor the acrreement among good men, nor the calling together of the fenate in this fortified place, nor the counte¬ nances and looks of this afiembly, appear to move you in the leaft I affure yon we are all of us apprifed of ufrat you did the laft night, and the night before, where you was, and who were with you, and what re- folntions you came to. Thefe are fad times, the age is very degenerate ; that the fenate fhould know all this, the conlul fee it ; and yet that this man fhould live, come into the fenate, hear all our debates, and mark us out to deftroy us.” You fee the fenfe is en¬ tirely the fame, and the words too in a great meafure; fo that there is little mare than an alteration in the form of them. And yet who does not perceive how flat and languid fuch a way of talking muft have ap¬ peared at that time ? and how much it lofes of that [pint and energy, which {hows itfelf in Cicero’s man¬ ner of exprefiion ? Had he delivered himfelf thus, it might indeed have made the fenate look upon Cati¬ line as an abandoned wretch, loft to all virtue and goodnefs, and perhaps have moved fome to pity him on that account ; as we are eafily induced to com- paflionate perfons in fuch circumftances, efpecially when defcended from noble and virtuous anceftors, which was his cafe. But fure it would have been ill fuited to fire their minds with that generous regard for their country, and the neceffary precautions for its fecurity, which the circumftances of the ftate then required. Nor would Catiline have been at all de¬ terred by it, but rather encouraged in the profecu- tion of his defigns, from the little effecft a fpeech fo managed muft probably have had upon the minds of the fenators. But Cicero knew very well that the paflions of mankind are the fprings of aftion : that it is many times not fufficient for an orator to convince their minds, by fetting the truth in a clear light; but be muft alfo raife their hopes, alarm their fears, in¬ flame their anger, or excite fome other fuitable paf- fion, before they will be brought to a/W. Cicero was a true patriot and hearty lover of his country. And therefore we fhall ufe this figurejn faying, that at the time of Catiline's confpi¬ racy Cicero appeared like Cicero. The fenfe would' re¬ main the fame, but the figure would he loft, if we fhould alter the words, and fay, at that time Cicero appeared Me himfelf. So when two or more fentences, or members of a fentence, end with the fame word, it is called epijlropheas when we fay, To lofe alPre*- hjh of life, is in ejfeti to lofe life. But if only the order of the words be changed in the latter claufe thus, To lofe all rgijh of life, is to lofe life in effect; the figure vamfhes. And this is the nature of the verbal figures. But it is not fo in figures of fentences; they continue the f.tme, whatever alterations are made in 3 I the I 4U Elocution* ORATORY. An orator fomctirr.es thinks it proper to certain the truth of what is fai3 [67] Verbal the wor^a. — — . .. change the form of his Jifcourfc) and addrefs himfelf to his audience, or an abfent perfon, or elfe perhaps to introduce fome other perfon as fpeaking to them whofe words may be fuppofed to carry greater weight and authority with them than his own. The former ©f thefe is called apojlrophe, and the latter profopopaia er imagery ; which require no certain words or order of expreflion. Art. I. Ver»al Figures. three forts, as redundancy, or These may be diftinguifhed into ftfn milbed *^7 confift in a deficiency of words, a into three »repetition. , , . forts; with I. Of the firft fort are elltpfis and afyndeton. > _ their vari- Ellipfis, is when one or more words are wanting in ousfubdivi-a fentence to complete the conflruaion, and fully ex- t0nS’ prefs the fenfe. This figure is often ufed in proverbial fpeechea : as when we fay, Many men, many minds ; that is, have many minds’, and, The more danger, the more honour ; that is, gains more honour. But where more is intended by fuch exprefiions than mere brevity, and efpecially when they are the effe&of fome pafiion, the figure receives another name, and is called apofio- pefis, which is placed among the figures of fentences, where we fhall confider it. jifyndeton, is when the particles that connect the members of a fentence one with another are left out, to reprefent either the celerity of an aftion, cr the hade and eagernefs of the fpeaker. Thus Cas- far exprefles his fpeedy conqueft of Pharnaces : / came, }fiatv, I conquered. If he had inferted the copula" tives, and faid, 1 came, and Ifianv, and I conquered, it would have retarded the expreffion, and not given lo full and iuft an idea of the fwiftnefs of the a&ion. In the laft article we took notice of the vehement and impetuous manner in which Cicero attacked Catiline in his firft oration, where his defign was to fire the minds of the fenate againft him, and oblige him to leave the city , both which points he gained by that fpeech. The next day, therefore, when Catiline was gone, he calls together the body of the citizens, and makes a fpeech to them, which in a fort of rapture or tranfport of mind he thus begins, by acquainting them with'the departure of Catiline, He is gone, departed, efica- ■T-d peci, broke out; intimating at the fame time both the exceffive rage in which Catiline left Rome, and the great pleafure with which he was himfelf affe&ed os that account. This concife way of fpeaking adds like- wife ft confiderable emphafis to an exprefiion, and by brineine the feveral parts of a thing nearer together - 5 - r r IWa Part HR So the fervant in Elocution. Terence, when the truth of what he had related was " ‘ called in queftion, replies, It is certainly fio ; I faw it •with thefe very eyes- When the feveral parts of a fentence are united by proper particles, it is called polyfyndeton. This adds a weight and gravity to an expreffion, and makes what is faid to appear with an air of folemnity ; and by re¬ tarding the courfe of the fentence, gives the mind an opportunity to confider and reflect upon every partdi- ftimftly. We often meet with this figure in Demoft- henes, which very well fuits with the gravity' of his ftyle. So he encourages the Athenians to profecute the war againft King Philip of Macedon, from this confideration, that now “ they had ffiips, and men, and money, and ftores, and all other things which might contribute to the ftrength of the city, in greater number and plenty than in former times.” Every ar¬ ticle here has its weight, and carries in it a proper mo¬ tive to animate them to the war. But if you remove the copulatives, the fentence will lofe much of its force. III. Thethird kind of verbal figures confifts in a re~ petition. And either the fame word in found or fenfe,. is repeated ; or one of a like found, or fignification, or both. Of the former fort there are ten, called antanacla- fits, place, ep'rzeuxis, climax,, anaphora, epifirophe, fyin- place, epanalepfis, anadiplofis, and epanodos. The two firft of thefe agree in found, but differ in fenfe ; the eight following agree in both. When the fame word in found but notin fenfe is re¬ peated, it is called antanaclqfis. This figure fome- times carries a poignancy in it; and when it appears na¬ tural and eafy, difeovers a ready tarn of thought. As when a fon, to clear himfelf of fufpicion, affur^d his fa¬ ther he did not wait for his death; his father replied. But I defire you would wait for it. Here the word wait is taken in two different fenfes. It is likewife ufed on ferious occafions, as in grave and moral pre¬ cepts, which are apt te affeft the mind with greater pleafure when delivered in an agreeable drefs. As this ; Care for thofe things in your youth, which in old age may free you from care : Where the word care in the former place fignifies to provide, and in the latter- anxiety of mind. And even our Saviour himfelf once ufes this figure, when he fays to one of his difciples,. who defired to be difmiffed from attending him that- he might go and bury his father; Follow me, and let the dead bury their dead'. Where dead in one place denotes a natural death, and in the other a moral op affefts the mind with greater force. Thus Cicero fits fpintual death. .. . Cato’s charafter in a very ftrong and beautiful light Sometimes the name of fome perfon or thing is re- bv the ufe of this figure. “ Nature itfelf (fays he) peated again, to denote fome particular charafter or has made you a great and excellent man for integrity, property defigned to be expreffed by it; and then gravity, temperance, magnanimity, juftice, in a word, it is called^. Thus Cicero fays, Toung Cato wants for all virtues.” II. The fecond fort of verbal figures is contrary to thefe, and confifts in a redundancy or multiplicity ©f words ; which are likewife two, pleonafnus and/o- hfyndeton. When we ufe more words than are neceffary to ex- prefs a thing, it is called pleonafmus. This is done fometimesfor greater emphafis, as when we fay, Where in the world i: he ? At other times it is defigned to af- experience, but yet he is Cato.; meaning he had the fteady temper of the family. And fo in the pro¬ verbial expreffion, Hn ape is an ape, drefs him ever fa fine. When a word is repeated again with vehemence in the fame fenfe, it is called epixeuxis. This figure ffiows the earneftnefs of the fpeaker, and his great concern of mind about what, he fays ; and therefore has a na¬ tural tendency to excite the attention of the audience. 6 It 68 PartllL O R A T O Elocution. It Is Anted to exprefa anger, furprife, forrow, and fe- he fays, l—"'v veral other pafliona. As when Cicero would exprefs his indignation againft Antony for having been the chief inftrument in bringing on the civil war, he fays to him : Tow, you, Antony, pujhed Ctefar upon the civil war. And thus he tells Catiline in his firft invec¬ tive againft him : You live; and live, not to lay afide, but to purfue, your wicked dejign. And when our Sa¬ viour would exprefs his great concern and forrow for the wickednefs of the Jews, he does it in this pathe¬ tic manner : 0 ‘Jerufalem, Jerufalem, who killejl the pro¬ phets ! *9 Climax is a beautiful kind of repetition, when the word, which ends the firft member of a period, be¬ gins the fecond, and fo through each member, till the whole is finilhed. There is a great deal of ftrength as well as beauty in this figure, where the feveral fteps rife naturally, and are elofely connected with each other. As in this example : There is no enjoyment of property without government, no government without a magijlrate, no magijlrate without obedience, and no obe¬ dience where every one ads as he pleafes. But, as Quin¬ tilian obferves, this figure lies fo open, that it is apt to look too much like art; for which reafon he ad- vifes not to ufe it often. To prevent this, therefore, orators fometimes difguife it, by not repeating the fame word which flood in the former member, but fame other equivalent to it. As in the following inltance of Cicero for Milo : “ Nor did he commit himfelf only to the people, but alfo to the fenate; nor to the fenate only, but likewife to the public forces ; nor to thefe only, but alfo to his power with whom the fe- nate had entrufted the whole commonwealth.” jo When feveral fentences, or members of a fentence, begin with the fame word, it is called anaphora. This is a lively and elegant figure, and ferves very much to engage the attention. For by the frequent return of the fame word the mind of the hearer is held in an agreeable fufpenfe, till the whole is finifhed. “ You do nothing (fays Cicero to Catiline), you attempt nothing, you think nothing, but what I not only hear, but alfo fee, and plainly perceive.” It is fre¬ quently ufed by way of queftion; which renders it not only beautiful, but like wife ftrong and nervous. As at the beginning of the fame fpeech : “ Does neither the night-guard of the palace, nor the city watch, nor the peoples fear, nor the agreement of all good men, nor the meeting of the fenate in this fortified place, nor the countenances and looks of this aflembly, at all move you?” And in another of his orations ; “ What is fo popular as peace, which feems to afford a pleafure, not only to beings endowed with fenfe, but even to inanimate nature ? What is fo popular as li¬ berty, which even beads as well as men feem to covet and prefer above all things? What is fo popular as cafe and leifurc, for the enjoyment of which you and your anceftors have undergone the greateft la¬ bours ?” 71 Epijlrophe is contrary to the former, and makes the repetition at the end of each member or fentence. As thus r Since concord was lojl; friendjhip was loji, fidelity was lojl, liberty was lojl ; all was Itjl. And Ci¬ cero, in the charge which he brings againft Mark An tony before the fenate, makes ufe of this figure, when R Y. 7% 73 43 S Do you lament the deftru&ion of three Elocution. Roman armies ? the author of that deftru&ion was -y— Antony. Do you bewail the lofs of moft eminent ci¬ tizens ? They have been taken from you by Antony. Is the authority of this order weakened ? It is weak¬ ened by Antony.” Symploce takes in both thefe laft figures. As in that of Cicero : “ You would pardon and acquit him, whom the fenate hath condemned, whom the people of Rome have condemned, whom all mankind have con¬ demned.” Here the feveral members both begin and end with the fame word. We have a beautiful in- ftance of it in St Paul, when he fays, “ Are they Hebrews ? fo am I. Are they Ifraelites ? fo am I. Are they the feed of Abraham? fo am I.” When a fentence concludes with the word with which it began, it is called epanalepjis. As in that expref- fion of Plautus, “ Virtue contains all things, he wants no good thing who has virtue.” The figure is the fame, but the principle not fo honeft, in the advice which we find given by the mifer in Horace, when he fays, “ Get money, if you can, honeftly ; but however, get money.” This figure adds a force to an expref- fion, when the principal thing defigned to be convey¬ ed is thus repeated, by leaving it laft upon the mind. And it heightens the beauty of it, when the fentence has an agreeable turn arifing from two oppofite parts. As in Cicero’s compliment to Csefar : “ We have feen your vi&ory terminated by the war; your drawn fword in the city we have not feen.” Hermogenes calls this a circle, becaufe the fentence returns again to the lame word, as that geometrical figure is form¬ ed by the orbicular motion of a line to the fame point. When the following fentence begins with the fame word with which the former concluded, it is termed anadiplofts. As in the following inftance: Let us think no price too great for truth; truth cannot be bought too dear. So in that paffage of St John : He came to his own, and his own received him not. This figure generally fuits beft with grave and folemn dif- courfes. Epanodos is the inverfion of a fentence, or repeat¬ ing it backwards, fo that it takes in the two laft fi¬ gures; for it both begins and ends with he fame word, and the fame word is likewife repeated in the middle. This turn of expreffion has a beauty in it, and fhows a readinefs of thought We have the following example of it in Minutius Felix, where he is expofing the folly of the Egyptian fuperftition “ Ifis (fays he), with Cynocephalus and her priefts, laments, bemoans, and feeks her loft Ion ; her attendants beat their breafts, and imitate the grief of the unhappy mother; in a little time the fon is found, upon which they all re¬ joice. Nor do they ceafe every year to lofe what they find, or to find what they lote. And is it not ri¬ diculous to lament what you worlhip, or to worftnp what you lament ?” It ferves likewife to iliuftrate and enforce the fenfe, by fetting it in two oppofite views. As in that expreffion of the prophet: “ Wo unto them who call good evil, and evil good ; who put darknefs for light, and light for darknefs!” Thofe figure^! which coniift in a repetition of words of a like found or fignification, or both, are four; jla parorto* 74 75 436 76 77 O R A T Elocution, paronomafia, homoioptoton, fynonymia, and derlvatio ; the 1 ' J two firll of which rcfpeft words that are iimilar in found only, the third in ftnfe, and the laft in both. When two words very near in found, but different in fenfe, refpett each other in the fame fentence, it is called paronomafta. As when we fay, fter a feajl comes a faft; and, ^ friend in need is a friend indeed. We ufually call it a pun, which when new, and appo- fitely ufed, paffes for wit, and ferves to enliven con- verfation. Nor is it wholly to be excluded from grave and ferious difcourfes: for a witty jell has many times had a better elfeft than a folid argument, and prevailed with thofe who could not be moved by clofe reafoning. And therefore Cicero and the belt fpeakers have fometimes recourfe to it upon weighty and folemn oc- cafions, as will be fhown hereafter in its proper place. When the feveral parts of a fentence end with the fame cafe, or tenfe of a like found, this alfo is confi- dered as a figme, and named homoioptoton. As thus : 2Vo marvel though vuifdom complain that flee is either 'wil¬ fully drfpifed, or carekfsly neglected; either openly fcorn- ed, or fecretly abhorred. This figure is efteemed moil beautiful when the parts are all of the fame length, or pretty near it ; as it adds to the harmony of the period, and renders the cadency of the feveral mem¬ bers more muiical from the juft proportion between them. The Greek rhetoricians were much addi&ed to this figure, and Ifocrates is particularly celebrated for it. But fome of the beft orators feem to have induftri- oufly avoided it, as carrying in it too much the ap¬ pearance of art. And it is remarkable, that this figure appears nowhere fo much in all the works of Demoft- henes, as in an oration which he did not fpeak him- felf, but wrote for his friend Diodorus, a man of that tafte, who was to pronounce it as his own. The next figure above-mentioned \% fytibnymia. Now ftridtly fpeaking, fynofrymous words are thofe which have exadily the fame fenfe. But there being few fuch, the ufe of the term is fo far extended as to com¬ prehend words of a near affinity in their fignification, which in difeourfe are frequently put for one another. So, to dtfre, and intreat, are fometimes ufed as equi¬ valent terms; whereas to defire is no more than to wifh for a thing, and to intreat is to exprefs that incli¬ nation in words In like manner, ejleem and honour are often taken for fynonymous words, though they have not precifely the fame fenfe, but one is the ufual confequence of the other ; for efteem is the good opi¬ nion we entertain of a perfon in our mind, and ho¬ nour the outward expreffion of that opinion. When two or more fuch words come together, they coniii- tute this figure. As when Cicero, fpeaking of Pifo, fays, “ His whole countenance, which is the tacit language of the mind, has drawn men into a nuftake, and deceived, cheated, impofed on thofe who did not know him.” This figure fometimes adds force to an exprefiion, by enlivening the idea ; and it often pro¬ motes the harmony and juft cadency of a fentence, which otherwife would drop too foon, and dilappoint the ear. When fuch wrords as fpring from the fame root, as jvfice, jujl, wjufiice, unjujl, and the like, come toge¬ ther in the fame fentence, they make the figure called derivatio. Cicero, obferving the vanity of the phito- fophers who afft&ed praife at the fame time that they 75 79 O R Y. Part Ilf. decried it, ufes this figure, when he fays of them, Elocution, “ The philofophers fet their names to'thofe very —v ■,*“w books which they write for the contempt of glory ; and are delirous to be honoured and applauded even for what they fay in contempt of honour and ap- plaufc.” This figure receives an additional beauty when repeated, especially in two oppofite members ; as, He nvlfhed rather to die a prefent death, than to live a miferable life. Art. II. Figures ^Sentences. Of thefe, fome are principally adapted for reafon* rng, and others to move the paffions. I. Thofe failed for proof. Which are fix : ProJepJts, hypo bole, anacoinofis, epitrope, parabole, and antithefis. ^ Prolepfis, or anticipation, is fo called, when the ora-Qf g^ures tor firft ftarts an objetlion, which he forefees may of fe-..fences; be made either againft his conduct or caufe, and then fome are for anfwers it. Its ufe is to foreftal an adverfary, and prevent his exceptions, which cannot afterwaids be in-for mov;ng troduced with fo good a grace Though it has like-the paffi'ns. wife a farther advantage, as it ferves to conciliate the audience, while the fpeaker appears defirous to repre- fent matters fairly, and not to conceal any objection which may be made againft him. The occafions of this figute are various ; and the manner of introdu¬ cing it very different. Sometimes the orator thinks it neceflary to begin with it, in order to juftify his con¬ duit, and remove any exceptions which may be made againft his defign. Cicero, for feveral years together, after he firft began to plead, had always been for the defendant in criminal cates. And therefore, when he was prevailed with to undertake the accufation of Verres, he begins his oration with this apology for himfelf: “ If any one prefent (hould wonder, that when for fcveral years paft I have fo conduited my- felf as to defend many and accufe none, I now on a fudden alter my cuftom, and undertake an accufition: when he fhail have heard the occafion and reafon of my defign, he will both approve of it, and think na perton fo proper to manage this affair as tnyfelf.” And then he proceeds to give an account of the rea- fons which moved him to engage in it. At other times the objection is admitted as an exception to what has been faid, but not fo as to affeft it in gene¬ ral. Thus, when Cicero has repiefented the advan¬ tages of literature and the polite arts, he ftarts this obje&ion to what himfelf had laid, ‘-But fome one will a Ik, whether thofe great men, the memory of whofe glorious actions is delivered down to pofterity, were acquainted with that fort ot learning I fo ap¬ plaud ?” To which he replies, “ Indeed this can fcarce be faid of them all. However, the anfwer is eafy. I have known feveral perfons of excellent abilities, who, without learning, by the force of an extraordinary ge¬ nius have been men of great virtue and folidity ^ Nay I will add, that nature without learning, has oftener produced thefe qualifications, than learning without a genius. But yet it muft ftill be owned, that where both thefe meet, they form fomething very excellent and fingular.” Again, at other times, the orator art¬ fully reprefents the objection as fomething confider- able and important, to give the greatei weight to his anfwer when he has confuted it, Cicero, in his cele¬ brated oration for the Manilian law, could not omit to Part HI. ORATORY. Elocution, to take notice, that Lucullus had already gained fe- veral very confiderable advantages over Mithridates. And therefore,” having before defcribed the war as very great and dangerous, apprehending thefe two ac¬ counts might appear fomewhat inconliftent, and be liable to an objedion, he puts it thus artfully himfelf: “ But now, after what I have faidof Lucullus, it may probably be aiked, How then can the war be fo great? Be pleafed to hear, for there feems to be very juft rea- fon for this queftion.” And then he proceeds to fhow, from the power of king Mithridates at that time, his great abilities, long experience in military affairs, and frefh alliances, that the war was yet very great and dangerous. But fometimes, when the orator is fenfible that what he has advanced lies open to an ob¬ jedion, he omits to make it in exprefs terms; and yet proceeds to vindicate what he had faid, as if it had been made. Thus, when Cicero had charged Verres with having plundered the inhabitants of Sicily of all their plate, jewels, and other valuable moveables, which he thought worth while to carry away ; as the audience might imagine this to be fcarce credible, he takes it for granted they thought fo, and therefore im¬ mediately adds, “As Itrange as this is, I affirm it po- fitivdy, without any intention to aggravate the crime.” And fo he goes on to the proof ot his affertion. But this figure is likewife made ufe of to guard againft fome objedion, which the fpeaker apprehend* may he made againft what he defigns to fay. And thus Ci¬ cero ufes it in his oration for Sextius. “ My province (fays he), as I fpeak laft, feems to call for affedion to my friend, rather than his defence ; complaint, rather than eloquence ; expreffions of grief, rather than art. And therefore, if I {hall exprefs myftlf with more warmth, or greater freedom, than thofe who have fpoke before me, I hope you will grant me all that li- beity of fpeech which you judge reafonable to be al¬ lowed to an affedicnate forrow and juft refentment.” This figure requires great prudence and difcrction in the management of it. The fpeaker mult conflder well the temper, lias, and other circumftances of his hearers, in order to form a right judgment what parts of his difeourfe may be moll liable to exception. For to oi jed fuch things, which the hearers would never have thought of themfelves, is to give himfelf a need- lets trouble ; and to ftart fueh difficulties, which he cannot afterwards fairly remove, will expofe both him- feit and his caufe. But as nothing gives an audience greater pleafure and fatisfadion, than to have their fcruples fully anfwered as they rife in their thoughts; fo on the contrary, be a difeourfe otherwife ever fo Sr muft I fay ? That I fled from a confcioufnefs of guilt ? But what is charged upon me as a crime, was fo far from being a fault, that it is the molt glorious adion fince the memory of man, (he means his punifhing the affociates of Catiline.) That I feared being called to an account by the people ? That was never talked of; and if it had been done, I fhould have come off with double honour. That I wanted the fupport of good and honeft men ? That is falfe. That I was afraid of death ? That is a calumny. I muft therefore fay, what I would not, unlefs compelled to it, that I withdrew to preferve the city.” When the objedions are put by way of queftion, as in the example here given, theyr add a brifknefs and poignancy to the figure. All the parts of it are not conilantly exprtffed. For thus Cicero in his defence of Plancius introduces his ad- verfary objeding, and himfelf anfwering, “ The peo¬ ple judged ill, but they did judge ; they flrould not have done it, but they had a power ; i cannot fubmit to it, but many very great and wife men have.”— Both the propofition and conclufion are here omitted. The next figure in order is anaemnojis, or communi¬ cation ; by which the fpeaker deliberates either with the judges, the hearers, or the adverfary himfelf. Thus Cicero addreffes the judges in his accufacion of Verres : “ Now I delire your opinion what you think I ought to do. And 1 know your advice will be, though you do not declare it, what appeal's to me ne- ceffary to be done.” In another place we find him reafoning in this manner with the adverfe party: “ What could you have done in fuch a cafe, and at fuch a time; when to have fat ftill, or withdrawn, would have been cowardice ? When the wickednefs and fury of Saturninus the tribune had called you into the Capi¬ tol ; and the confuls, to defend the f ifety and liberty of your country ; whofe authority, whofe voice, which party would you have followed, and whofe coiRRia.nd would you have chofen to obey ?” I bis figure carries in it an air of modefty and condefcenfion, wdien the fpeaker feems unwilling to determine in his own caufe, but refers it to the opinion of others. It likewife (hows a perfuaiion of the equity of his canfe, that lie can leave it to their arbitration ; and ferves very much to conciliate their minds, while he joins them, as it vvera, with himfelf, and makes them of his party. And when the appeal is made to the adverfe party, it is of confiderable advantage, either to extort a con- feffion, or at leaf! to fiience him. And therefore the facred waiters fometimes very beautifully introduce God himfelf thus expoftulating with mankind; as the prophet Malachi, Si fan honoureth his father, and a £l( 437 entertaining and agreeable, if there be any doubt left fervant his wafer. If then I he a father^ where is mi upon the minds of the hearers, it gives them a pain that continues with them till it be removed. The figure hypobote or Jubjeflion, is not much un like the former ; and is, when feveral things are men¬ tioned that feem to make tor the contrary fide, and each of them icFuted in order. It confitls of three parts, w'hen complete ; a propofition, an enumeration of particulars with their anfwers, and a conclufion.— Thus Cicero, upon his return from banifhment, vin¬ dicates his conduct in withdrawing fo quietly and not oppe ling the ta&ion th*t tjedied him. My depar¬ ture (fays he) is objedted to me, w’hich charge I can¬ not aulvver without commending myfell. For what 8r. honour ? and if I he a mcjler, where is my fear P Another figure that comes under this head, is epilrope or concejjion, which grants one thing, to ob¬ tain another more advantageous. It is either real or feigned ; and either the whole of a thing, or a part only, is granted. We fiiail conlider each of theie fe> paratel), and illuftrate them with proper examples. Nothing more confounds an adverfary, than to grant him his whole argument ; and at the fame time either to fhow that it is nothing to the purpofe, or to offer foraething elle which may invalidate it. . allow, lays the claimant by vviii a. ainit the heir at law ihat no body was more nearly related, to the deceafed than you ; S that 43’S i Jocut.'ortf t&af ht ORATORY. Part HI, was tinder feme obligations to you ; that you fic to the fcl, water to the thirfly, and ref to the weary ; Elocution, /l 1/ t r\ rr l, si ^ rr t • n4- * •» ^.11 ^ 7. * . ^ _ a J. ~ ~ / _ •/_ . a *. J .. /s « _, S4 in the army together: but what is all this to the willP And thus Cicero in his defence of Ligarius, who was accufed by Tubero for having joined with Porr.pey in the civil war between him and Ctefar : “ ^ou have, Tubero, what an accufer would molt defire, the accufed perfon confefling the charge ; but fo as to affirm, that he was of the fame party with ■you and your excellent father. Therefore own firft that it was a crime in yourfelf, before you charge it as fuch upon Ligarius.” Sometimes the orator gives up fome particular point that would well admit of a difpute, to gain fomething more confiderable, which he thinks cannot fairly be denied him. In the affair of -Rofeius, where the proof depended upon circumftances, Cicero, who defended him, inquires what reafon could be alleged for his committing fo black a crime, as to Till his father. And after he has fhown there was no probable reafon to be affigned for it, he adds, “ Well, lince you can offer no reafon, although this might be fufficient for me, yet I will recede from my right ; and upon the affurance I have of his innocence, I will grant you in this caufe what I would not in another. I do not therefore infift upon your telling me why he killed his father, but afk how' he did it ?” This ap¬ pearance of candour and ingenuity in fuch conceffions removes the fufpicion of art, and gives greater credit to what is denied. We have an example of a feigned or ironical cenceffion, in Cicero’s defence of Flaccus ; where, interceding for him on the account of his for¬ mer good fervices in the time of Catiline’s confpiracy, he fays in a way of irony, If fuch things are to be overlooked, “ let us appeafe the ghofts of Lentulus and Cethegus; let us recal thofe who are in exile ; -and let us be punifhed for our too great affedlion and love for our country.” By this artful infinuation, the orator, after he has ufed all his arguments to perfuade his hearers, does as it were fet them at li¬ berty, and leave them to their own eledion ; it being the nature of man to adhere more ftedfaft- ly to what is not violently impofed, but referred to his own free and deliberative choice. And to thefe feigned conceffions may be referred fuch ways of reafoning, by which the orator both juftifies a charge brought againft him upon the fuppofition of its being true, and alfo proves that the charge it- felf is falfe. Thus Cicero, in his defence of Milo, re- prefents the taking off Clodius, with which Milo was accufed, as a glorious ad ion ; after he has fhown that Milo’s fervants did it without the knowledge of their mailer. Paralole or fimilitude, illuftrates a thing by com¬ paring it with fome other, to which it bears a refem- blance. Similitudes are indeed generally but weak arguments, though often beautiful and fine ornaments. And where the olefign of them is not fo much to prove what is doubtful, as to fet things in a clear and agree¬ able light, they come properly under the notion of fi¬ gures. They are of two forts; limple and compound. Thofe are called fimplet in which one thing only is likened or compared to another, in this manner: As /wallows appear in fummer, but in winter retreat; fo falfe friends Jhow themfelves in pro/perity, but oilfy away when adi'erjity approaches. Compound fimilitudes are fuch, wherein one thing is likened or compared to fe¬ deral ethers j as thus : What light is to the world, phy- that is Imwlcdge to the mind. The more exadt the a- greement is between the things thus compared, they give the greater beauty and grace to the figure. Antithejis or oppofiiion, by which things contrary or different are compared, to render them more evi¬ dent. Thus Cicero lays, “ The Roman people hate private luxury, but love public grandeur.” This is a very florid figure ; and fuited no lefs for amplifi¬ cation than proof. As in the following inflance of Cicero, where, fpeaking of Pompey, he fays, “ He waged more wars than others had read; conquered more provinces than others had governed ; and had been trained up from his youth to the art of war, not by the precepts of others, but by his own commands ; not by mifearriages in the field, but by viclories ; not by campaigns, but triumphs.” It is elteemed a beauty in this figure when any of the members are inverted, which fome call antimetathejis. As where Cicero, oppo- fing the condudl of Verres when governor of Sicily, to that of Marcellas who took Syracufe the capital city of that ifland, fays, “ Compare this peace with that war, the arrival of this governor with the vidtory of that general, his profligate troops with the invincible army of the other, the luxury of the former with the temperance of the latter; you will fay, that Syracufe was founded by him who took it, and taken by him who held it when founded.” To this figure may alfo be referred oxymoron, or feeming contradiction ; that is, when the parts ef a fentence difagree in found, but are conliftent in fenfe. As when Gvid fay^ of Althea, that Jhe was impioufy pious. And fo Cato ufed to fay of Scipio Africanus, that “ he was never lefs at leifure, than when he was at leifure ; nor lefs alone than when aloneBy which he meant, as Cicero tells us, that “ Scipio was wont to think of bulinefs in his retirement, and in his folitude to converfe with himfelf.” This is a ftrong and bold figure, which awakens the mind, and affords it an agreeable pleafure to find upon refledtion, that what at firft. feemed con- tradidlory, is not only confiftent with good fenfe, but very beautiful.—The celebrated Dr Blair, whom we have more than once quoted in this article, has thefe obfervations on antithefis, or the contrail of two objedls. “ Contrail has always this effedt, to make each of the contralled objedls appear in the ftronger light. White, for inftance, never appears fo bright as when it is op- pofed to black, and when both are viewed together. Antithefis, therefore, may, on many occafions, be em¬ ployed to advantage, in order to ftrengthen the im- preffion which we intend that any objedl Ihould make. In order to render an antithefis more complete, it it always of advantage, that the words and members of the fentence, expreflmg the contralled objedls, be fimilarly conftrudted, and made to correfpond to each other. This leads us to remark the contrail more, by fetting the things which we oppofe more clearly over againft each other ; in the fame manner as when we contrail a black and a white objedt, in order to perceive the full difference of their colour, we would choofe to have both objedls of the fame bulk, and placed in the fame light. Their refemblante to each other, in certain circumftances, makes their difagreement in others more palpable. At the fame time, I mull obferve, that the frequent ufe ol antithefi*, efpecially where the oppo- fition in the words is nice and quaint, is apt to render the 6j 86 The fecor.d kind of figures of fentences- Part nr. ORA Elocution, the {lyte cJifagreeable. A or moral ftying, t..»—v ■■"■’ properly enough receives this form ; both becaufe it is fuppofed to be the fruit of meditation, and becaufe it is defigned to be engraven on the memory, which recals it more eafily hy the help of fuch contrafted expreffions. But where a firing of fuch fentences fucceed each other, where this becomes an author’s favourite and prevailing manner of expreffing himfelf, his ftyle is faulty ; and it is upon this account Seneca has been often and juftly cenfured. Such a ftyle appears too ftudied and laboured ; it gives us the im- preffion of an author attending more to his manner of faying things, than to the things themfelves which he fays.” There is ftill another kind of antithefis, which confifts in furprifing us by the unexpefted contrails of things which it brings together ; but it is fuch as is wholly beneath the dignity of an orator, or of grave compofitions of any fort, and is fit only for pieces of profeffed wit and humour, calculated only to excite laughter or create ridicule. II. Thofe fmted to move the pajfiom. Which are. 13 ; namely, epanorthofis, paralepfis, parrhejia, aparithmejls, exergnjta, hypotypojis, aporia, pojtopejis, erote/isy ecphoncjis, epiphonema, npojlrophe, andprofopeia. Epanorthojis, or correSlon, is a figure, by which the fpeaker either recals or amends what he had laft faid. It is ufed different ways. For fometimes one or more words are recalled by him, and others fub- joined in their room ; at other times, without recall¬ ing what has been faid, fomething elfe is fubftituted as more fuitable. This is a very extenfive figure, and made ufe of in addrefling to different paffions. We have an inftance of it in Terence’s Se/f-tormentory where the old man, whofe extraordinary concern for the abfence of his fon gave occafion to the name of the play, thus bewails his condition to his neighbour, ** I have an only fon, Chremes. Alas! did I fay that I have ; I had indeed ; but it is now uncertain whe¬ ther I have or not.” Here, to aggravate his misfor¬ tune, he recals a pleafing word, and fubftitutes ano¬ ther more affefting in its place. And Cicero, in his defence of Milo, fpeaking to the judges concerning Clodius, fays, “ Are you only ignorant what laws, if they may be called laws, aud not rather torches and plagues of the date, he was about to impofe and force upon us ?” Again, in his defence of Plancius, he fays, What greater blow could thofe judges, if they are to be called judges, and not parricides of their coun¬ try, have given to the date, thair when they banifhed him, who when praetor freed the republic from a neighbouring war, and when conful from a civil one ?” He is fpeaking there of Opimius. But in commend¬ ing the moderation of Lucius Mummius, who did not enrich himfelf, but his country, by demoliftving the wealthy city of Corinth; he thus recals his whole ex- prefiion, and by giving it a new turn heightens the compliment he defigned him : “ He chofe rather (fays he) to adorn Italy than his own houfe ; though hy adorning Italy his houfe feems to have received the greateft ornament.” And fometimes the correc¬ tion is made by fubftituting fomething contrary to what had been faid before ; as in the following paf- fage of Cicero : “ Casfar (meaning Auguftus), though but a youth, by an incredible and furprifing refolu- tion and courage, when Antony was moil enraged, TORT. and we dreaded his cruel and pernicious return from Elocution. Brundufium, at a time when we neither afked, nor ex- v petled, nor defired it (becaufe it was thought impof- fible), raifed a very powerful army of invincible ve¬ terans; to effeft which he threw away his whole eftate: ^ Though I have ufed an improper word ; for he did not throw it away, but employed it for the fafety of the government.” At other times, as has been faid, the correction is made by adding a more fuitable word, without any repetition ©f the former. Thus Cicero, after he has inveighed againft the crimes of Verres, breaks out into this pathetic exclamation : 0 the cle¬ mency, or rather 'wonderful and f n ular patience, of the Roman people! He did not think the word clemency ftrong enough, and therefore adds patience, as better anfwering his defign. The fudden and unexpected turn of this figure gives a furprife to the mind, and by that means renders it the more pathetic. Paralepjis, or omiffion, is another of thefe figures, s? when the fpeaker pretends to omit, or pafs by, what at the fame time he declares. It is ufed either in praife or difpraife. Thus Cicero, in his defence of Sextius, introduces his character in this manner, with a defign to recommend him to the favour of the court: “ I might fay many things of his liberality, kindnefs to his domeftics, his command in the army, and mo¬ deration during his office in the province : but the ho¬ nour of the Hate prefents itfelf to my view ; and calling me to it, advifes me to omit thefe leffer matters.” But in his oration to the fenate againft Rullus thfe tribune, who had propofed a law to fell the public lands, he makes ufe of this figure to reprefent the pernicious effeCts of fuch a law, particularly w ith re- fpeCt to the lands in Italy. “ I do not complain (fays he) of the diminution of our revenues, and the woful effeCts of this lofs and damage. I omit what may give every one occafion for a very grievous and juft complaint, that we could not preferve the prin¬ cipal eftate of the public, the fineft poffeffion of the Roman people, the fund of our provifions, the granary of our wants, a revenue entrufted with the ftate ; but * that we muft give up thofe lands to Rullus, which, after the power of Sylla, and the largeffes of the Gracchi, are yet left us< I do not fay* this is now the only revenue of the ftate, which continues when others ceafe, is an ornament in peace, fails us not in war, fupports the army, and does not fear an enemy. I pafs over all thefe things, and referve them for my difcourfe to the people, and only fpeak at prefent of the danger of our peace and liberties.” His view here was to raife the indignation of the fenate againft Rullus, and excite them to oppofe the law. There is a beautiful inftance of this figure in St Paul’s epiftle to Philemon, where, after he has earneftly intreated him to receive again Onefimus his fervant, who had * run from him, and promifed that if he had wronged * him, or owred him any thing, he would repay it, he ' adds* That I may not fay, you owe even yourfelf to me. Nothing could be a ftronger motive to foften his dif- pleafure againft his fervant, from a fenfe of gratitude to the apoftle. Hermogenes has obferved, "that the defign of this figure is to poffefs the minds of the au¬ dience with more than the words exprefs, and that it is principally made ufe of on three occafions: either when things are fmall, but yet neceffary to be men¬ tioned i 44° ORA" Elocution.^ tionecl ; «r well known, and need r>ot be enlarged v on ; or ungrateful, and therefore fhould be introduced with caution, and not fet in too ftrong a light. .‘■88 Yhe next figure above-mentioned was Parrhsjla, or reprehenfion : Not that whenever a perfon admonifhes Air reproves another it is to he efteemed a figure ; but when it is done with art and addrefs, and in fuch cir- cumflances as render it difficult not to difukafe.— The orator therefore fometimes prepares his hearers for this by commending them firft, urging the ne- ceffity of it, representing his great concern for them as his motive, or joining himfelf with them. Thus Cicero charges the fenate with the death of Servius Sulpicius, for fending him to Mark Antony under a very ill ftate of health. And his defign in it was to bring them more readily into a motion he was about to make, that both a ftatue and a fepulchral monu¬ ment might he ere&ed to his memory at the public expence. “ You (fays he), it is a very fevere expref- fion, but I cannot help fayiny it ; you, I fay, have de¬ prived Seryius Sulpicius of his life. It was not from cruelty indeed, (for what is there with which this af- fembly is lei's chargeable ?) but when his diftemper pleaded his excufe more than his words, from the hopes you conceived that there was nothing which his authority and wifdom might not be able to effieft, you vehemently oppofed his excufe, and obliged him, who always had the greateft regard fer.your com¬ mands, to recede from his refolution.” Sometimes, indeed, the orator affumes an air of reproof, with a view only to pafs a compliment with a better grace. As Cicero in his addrefs to Casfar, when he fays, “ I hear that excellent and wife faying from you with concern, That you have lived long enough, either for the purpofes of nature, or glory : for nature perhaps, if you think ♦o ,* and, if you pleafe, for glory ; but, what is principally to be regarded, not for your coun- try.” It adds both a beauty and force to this figure, when it is expreffied in a way of comparifon. As in the following inftance of Cicero : “ But fince my dif- courfe leads me to this, confider how you ought to be affedted for the dignity and glory of your empire. Your anceftors often engaged in war to redrefs the injuries of their merchants or failors : how ought you then to refent it, that fo .many thoufand Roman ci¬ tizens were murdered by one meffage, and at one time? Your forefathers deftroyed Corinth, the principal city in Creece, for the haughty treatment of their am- baffiadors ; and will you fuffer that king to go unpu- niffied who has put to death a Roman legate, of con- fular dignity, in the mod ignominious as well as mod cruel manner? See, led, as it was their honour to leave you the glory of fo gi-eat an empire, it ffiould prove your difgrace not to be able to maintain and defend what you have received from them.” By this figure an addrefs is made to the more tender paffiens, modedy, fliame^ and emulation, the attendants of an ingenuous temper, which is fooned touched, and mod affefted, by a juft reproof. £.9 Another of thefe pathetic figures is Jparithmefisy or enumeration, when that which might be expreffed in general by a few words, is branched out into fevetal particulars, to enlarge the idea, and render it the more affecting. Cicero, in pleading for the Maniiian 1 w, where his defign is to conciliate the love and edeem of the people to Pompey, thus enlarges upon ^251. O R Y. Part nr. his character: “ Now, what language can equal the Elocution. virtue of Cneius Pompey? What can be faid either' v—^ worthy of him, or new to you, or which every one has not heard ? For thofe are not the only virtues of a treneral which are commonly thought fo ; labour iu affairs, courage in dangers, indudry in aiding, dif- patch in performing, defign in contriving; which are greater in him than in all other generals we have ever feen or heard of.” And fo likewife, when he endea¬ vours to difpoffefs Pompey of the apprelienfion that Milo defigned to affaftinate him : “ If (fays he) you fear Milo 5 if you imagine that either formerly, or at prefent, any ill defign has been formed by him againft your life; if the foldiers raifed through Italy (as feme of your officers give out), if thefe arms, if thefe cohorts in the Capitol, if the Gentries, if the watch, if the guards which defend your perfon and houfe, are armed to prevent any attempt of Milo, and all of them appointed, prepared, and dationed on his account; he mud be thought a perfon of great power, and incre¬ dible refolution, above the reach and capacity of a fingle man, that the mod confummate general, and the whole republic are in arms againd him only. But who does not perceive, that all the difordered and finking parts of the ftate are committed to you, to re&ify and Ripport them -by thefe forces ?” This might have been faid in a few words, that fuch vad preparations could never he intended for fo low a purpofe. But the orator’s view was to expofe that groundlefs report, ahd fhame it out of countenance. And foon after he endeavours to raife compaffion for Milo under thofe prejudices by the fame figure : “ See how various and changeable is the ftate of human life, how unfteady and voluble is fortune, what infidelity in friends, what difguifes fuited to the times, what flights, what fears, even of the neared acquaintance, at the approach of dangers.” Had no addrefs to the paffions been defigned here, fewer of thefe reflexions might have been fufficient. The ufe of this figure iu amplification is very evident from the nature of it, which confifts in unfolding of things, ahd by that means enlarging the conception of them. Exerga/ia, or expofition, has an affinity with the for- ^ mer figure : but it differs from it in this, that it con¬ fifts of feveral equivalent exprdlions, or nearly fuch, in order to reprefent the fame thing in a ftronger manner ; whereas the other enlarges the idea by an enumeration of different particulars. So that this figure has a near relation to fynonymia, of which we have treated before under Verbal figures. We have an indance of it in Cicero’s defence of Sextius, where he fays, “ Thofe who at any time have incited the populace to fedition, or blinded the minds of the ig¬ norant by corruption, or traduced brave and excellent men, and fuch as deferved well of the public, have with us always been efteemed vain, bold, bad, and per¬ nicious citizens. But thofe who repreffed the at¬ tempts and endeavours of fuch as, by their autho¬ rity, integrity, condancy, refolution, and prudence, withftood their infolcnce, have been always accounted men of folidity, the chiefs, the leaders, and fupporters of our dignity and government.” Nothing more is intended by this paffage, but to fet the oppofite cha¬ racters of faXious petfons and true patriots in the ftrongeft light, with a view to recommend the one, and create a juft hatred and detedation of the other. So Part III* Elocution. So clfewhcre he reprefents the juft ice of felf-defcnce <—^— in no lefs different terms: “ If reafon (fays he) pre- fcribes this to the learned, and necefiity to barbarians, cuftom to nations, and nature itfelf to brutes, always to ward off all manner of violence, by all poffibk ways, from their body, frcm their head, from their life ; vou cannot judge this to be a criminal and wicked a&ion, without judging at the fame time that all perfons who fall among robbers and aflaflins muft either perifh by their weapons, or your feutence.”— He is addrefling here to the judges in favour of Milo. The warmth and vehemence of the fpeaker often runs him into this figure, when he is afTefted with his fub- jeft, and thinks no words, no exprefllons, forcible enough to convey his fentiments ; and therefore re¬ peats one after another, as his fancy fuggefts them. This flow of expreflion, under the conduct of a good judgment,is often attended with advantage: as it warms the hearers, and imprefTcs their minds, excites their paflions,and helps them to fee things in a ftronger light. Hypotypofis, or imagery, is a defcription of things jX painted in fuch ftrong and bright colours, as may help the imagination of the hearers to conceive of them rather as prefent to their view, than defcribed in words. It is peculiarly fuited for drawing chara&ers ; and often affords the fineft ornaments in poetry and hiftory, as well as orafory. Nor is it lefs moving, but fuited to {trike different pafiions, according to the nature of the fubjeft, and artful management of the fpeaker. Cicero has thus drawn the pifture of Cati¬ line, confiding of an unaccountable mixture of con¬ trary qualities. ‘ He had (fays he) the appearance of the greateft virtues : he made ufe of many ill men to carry on bis defigns, and pretended to be in the intereft of the belt men ; he had a very engaging be¬ haviour, and did not want induflry nor application ; he gave into the greateft loofenefs, but was a good foldier. Nor do I believe there was ever the like monfter in the world, made of fuch jarring and re¬ pugnant qualities and inclinations. Who at one time was more acceptable to the beft men, and who more intimate with the worft ? Who was once a better pa¬ triot, and who a greater enemy to this ftate? Who more devoted to pleafures, who more patient in la¬ bours ? Who more rapacious, and yet more profufe ? He fuited himfelf to the humours of all-he converfed with ; was ferious with the referved, and pleafant with the jocofe ; grave with the aged, and facetious with the young ; held with the daring, and extravagant with the profligate.” Such a charaaer of a man, when accompanied with power and intereft, muft render him no lefs the objea of fear than deteflation, which was the defign of Cicero in this defcription And el ewhere, in order to prevail with the fenate to direft the execution of thofe confpirators with Catiline who w'ere then in prifen, he paints the moft difrr.al feene of that horrid defign in the ftrongeft colours. “ Methinks (fays he) I fee this city, the light of the world, and citadel of all nations, fuddenly falling in- to one fire ; I perceive heaps of miferable citizens buried in their ruined country ; the countenance and fury of Cethegus raging in your {laughter, prefents itfelf to my view.” This figure is very ferviceable in amplification, as we have formerly ftiowH in treating upon that fubjeft. But no fmall judgment is required in the management of deferiptions- Leffer circuiu- Vol. XIII. Part II. 441 ftances (hould either be wholly omitted, or but {lightly Elocution. touched ; and thofe which are mere material drawn in — their due proportion. Nature is as much the rule of the orator as of the painter, and what they both pro- pofe to imitate. And therefore, let a thought be ever fo pleafing and beautiful in itfelf, it muft not be in'* troduced when foreign to the purpofe, or out of its place, any more than a painter {hould attempt to alter nature, when he propofes to copy it. This figure re¬ quires liktwife a vigorous and lively genius. For the images in defcription can rife no higher than the con¬ ception of the fpeaker, finee the idea muft fit ft be formed in his own mind before he can convey it to others; and agreeably to the cleatnefs with which he con¬ ceives it himfelf, he will be able to exprefs it in words. Aporia, or doubt, expreffes the debate of the mind 9J with itfelf upon a prefling difficulty. A perfon in fuch a ftate is apt to hefitate, or ftart feveral things fucceffively, without coming to any fixed refolution. The uneafinefs arifing from fuch a diforder of thought is naturally very moving. Of this kind is that of Cicero for Cluentius, when he fays, “ I know not which way to turn myfelf. Shall I deny the fcandal thrown upon him of bribing the judges ? Can I fay the people were not told of it ? that it was not talked of in the court ? mentioned in the fenate ? Can I re¬ move an opinion fo deeply and long rooted in the minds of men ? It is not in my power. You, judges, muft fupport his innocence, and refeue him from this calamity.” Orators fometimes choofe to begin their difeourfe with this figure. A diffidence of mind at firft is not unbecoming, but graceful. It carries in it ah air of modeity, and tends very much to conciliate the affeftions of the hearers. Livy gives us a very elegant example of this in a fpeech of Scipio Afri- canus to his foldiers, when, calling them together after a fedition, he thus befpeaks them : “ I never thought I ftiould have been at a lofs in what manner to ad- drefs my army. Not that I have applied myfelf more to words than things; but becaufe 1 have been accuf- tomed to the genius of foldiers, having been trained up in the camp almoft from my childhood. But I am in doubt what or how to fpeak to you, not knowing what name to give you. Shall I call you citizens, who have revoked from your country ? Soldiers, who have difowned the authority of your general, and broke your military oath ? Enemies ? 1 perceive the mien, the afpeft, and habit of citizens; but difeern the add ions, words, defigns, and difpofitions ©f enemies.” Sometimes a paffion has that effedf, not fo much to 93 render a perfon doubtful what to fay, as to flop him in the midft of a fentence, and prevent his expreffing the whole of what he defigned ; and then it is called Apojlopejis, or concealment. It denotes different pal- fions ; as anger, which, by reafon of its heat and vehe¬ mence, caufes perfons to break off abruptly in their difeourfe. So the old man in Terence, when he was jealous that his fervant obftrufted his defigns, ufes this imperfeft, but threatening expreffion, Whom, if / fmd. And Neptune, when defcribed by Virgil as very angry that the winds ftiould prefume to difturb the fea without his permiffion, after he has called them to him to know the reafon of it, threatens them in this abrupt manner: “ Whom I—but firft I’ll lay the ftorm.” But Cicero, in writing to Atticus, applies it to ex- 3 K prefs ORATORY. 9* 95 O R A T prefs grief, where he fays, “ I know nothing of Pom- pey, and believe he mull be taken, if he is not got on fhipboard. O incredible fwiftnefs! But of onr friend Though I cannot accufe him without grief, for whom I am in fo much concern and trouble.’' And in a letter to Callius he ufes it to exprefs fear, when he fays to him, “ Brutus could fcarce fupport himfelf at Mutma ; if he is fafe, we have carried the day. But II heaven avert the omen i all muft have recourfe to you.” His meaning is, “ If Brutus fhould be de- feited.” 1 he next figure is erotefis, or interrogation. But everv interrogation or qweftion is not figurative. When we inquire about a thing that is doubtful, in order to be informed, this is no figure, but the natural form of fuch expreflions. As if I afk a perfon, Where he is going ? or What he is doing? But then it becomes figu¬ rative when the fame thing may be exprefied in a direct manner ; but the putting it by way of queftion gives it a much greater life and fpirit. As when Ci¬ cero fays, u Catiline, how long will you abufe our patience ? do not you perceive your defigns are difeo- vered ?” He might indeed have faid, You abufe our patience a long ’while. You mujl be ferfible your dejigns are difeovered. But it is eafy to perceive how much this latter way of expreffion falls. Ihort of the force and vehemence of the former. And fo wdien Medea fays, I could fave ; and do you afk if I can defroy ? Had file faid, / could fave, and I can defroy, the fentence had been flat, and very unfit to exprefs the rage and fury in which the poet there reprefents her. This figure is fuited to exprefs moil paflions and emotions of the mind, as anger, difdain, fear, defire, and others. It ferves alfo to prefs and bear down an ad- yerfary. Cicero frequently makes this ufe of it. As in his defence of Plancius : “ I will make you this of¬ fer (fays he), choofe any tribe you pleafe, and Ihow, as you ought, by whom it was bribed ; and if you cannot, as I believe you will not undertake it, I will prove how he gained it. Is this a fair conteft ? Will you engage on this foot ? I cannot give you fairer play. Why are you filent ? Why do you diffemble ? Why do you hefitate ? I infill upon it, urge you to it, prefs it, require, and even demand it of you.” Such a way of pufhing an antagoniil ihows the fpeaker has great confidence in his caufe ; otherwife he would ne¬ ver lay himfelf fo open, if he was not afiured the other party had nothing to reply. This figure likewife di- verfifies a difeourfe, and gives it a beautiful variety, by altering the form of expreffion, provided it be nei¬ ther too frequent, nor continued too long at once. And befides, the warmth and eager manner in which it is exprefied, enlivens the hearers, and quickens their attention. Ecphonefs, or exclamation, is a vehement exten- fion of the voice, occafioned by a commotion of mind, naturally venting itfelf by this figure, which is ufed by Cicero to exprefs a variety of paffions. It often denotes refentment or indignation. Thus, after his return from bamfhment, refledting on thofe who had occafioned it, he breaks out into this moving ex¬ clamation : “ O mournful day to the fenate, and all good men, calamitous to the flate, afflidlive to me and my family, but glorious in the view of pofterity !” His defign was to excite an odium againft the authors of his exile, when recalled in fo honourable a manner. O R Y. Partlll, And again, in his defence of Callus • “ 0 the great Elocution* force of truth; which eafily fupporte itfelf again! the 1 wit, craft, fubtilty, and artful defigns of men He had been juft ihowing the abfurdity of the charge againft Calius, and now endeavours to expofe his ac- cufeis to the indignation of the court. At other times it is ufed to ^exprefs difdain or contempt. As when fpeaking of Pompey’s houfe, which was bought by Mark Antony, he fays : “ Q confum- mate impudence! dare you go within that houfe! dare you enter that venerable threftiold, and fhow your au¬ dacious countenance tq the tutelar deities which re- fide there ?” Nor is it Icfs fuited to indicate grief, as when he fays of Milo : “ O that happy country, which mall receive this man ! ungrateful this, if it banifti him! miferable, if it lofe him!” And fometimes it lerves to exprefs admiration ; as when, in compliment to Caefar, he fays, “ O admirable clemency ! worthy °i the greateft praife, the higheil encomiums, and molt lading monuments !” It has its ufe aifo in ridi¬ cule and irony. As in his oration for Balbus, where he derides his accufer, by faying, “ O excellent in¬ terpreter of the law ! mafter of antiquity ! corredlor and amender of our conftitution!” The facred writers iometimes ufe it by way of intreaty or wifh As the royal Pfalmift ; “ O that I had the wings of a dove, that I might flee away, and be at reft]” And at other tunes in triumph and exaltation, as in that of St Paul- ‘ O death, where is thy fling! O grave, where is thv vidory ! It is frequently joined with the preceding figure interrogation ; as appears in fome of the inflan- ces here brought from Cicero. And it generally fol¬ lows the reprefentation of the thing which occalions it. 1 hough fometimes it is made ufe of to introduce it, and then it ferves to prepare the mind by exciting its attention. Thus Cicero, in his defence of Cadius, to render the charader of Clodia more odious, at whofe mitigation he was accufed, infinnates that Ihe had be¬ fore poifoned her hulband ; and to heighten the bar¬ barity of the fad, and make it appear the more ffiock- mg, he introduces the account of it, with this mo¬ ving exclamation : “ O heavens, why do you fome¬ times wmk at the greateft crimes of mankind, or de¬ lay the puniihment of them to futurity !” Epiphonema, or acclamation, has a great affinity with the former figure. And it is fo called, when the ipeaker, at the conclufion of his argument, makes fome lively and juft remark upon what he has been faying, to gwe it the greater force, and render it the more afteding to his hearers. It is not fo vehement and impetuous as exclamation, being ufually expreffive of the milder and more gentle paffions. And the reflec¬ tion ought not only to contain fome plain and obvious truth, but like wife to arife naturally from the difeourfe vyhich occafioned it, otherwife it lofes its end. When Cicero has fnown, that recourfe is never to be had to force and violence, but in cafes of the utmoft neceffi- ty, he concludes with the following remark : “ Thus to think, is prudence; to ad, fortitude; both to think and a61, perfed and confummate virtue.” And elfe- where, after he has deferibed a Angular inltance of cruelty and breach of friendfhip: “ Hence (fays he) we may learn, that no duties are fo facred and folemn, which covetoufnefs will not violate.” This figure is frequently exprefied in a way of admiration. As when Cicero has obferved, that ail men are defirous to live to 9* Part III. ORA Elocution, to an advanced age, but une&fy under it when at- u—'v tained, he makes this juft reflexion upon fueh a con- ducl: : “ So great is their ineonftancy, folly, and per- vetfenefs!” M’he next figure in order is apojlrophe, or addrefs, when the fpeaker breaks off from the feries of his dif- courfe, and addreffes himfelf to fome particular perfon prefent or abfent, living or dead ; or to inanimate na¬ ture, as endowed with fenfe and reafon. By this means he has an opportunity of faying many things with greater freedom than perhaps would be confident with decency if immediately directed to the perfons themfelves. He can admonifh, chide, or cenfure, with¬ out giving offence. Nor is there any pafiion, but may be very advantageoufly expreffed by this figure. When an orator has been fpeaking of any particular perfon, on a fudden to turn upon him, and apply the difcourfe to that perfon himfflf, is very moving ; it is like at¬ tacking an adverfary by furprife, when he is off his guard, and where he leaft expe&s it. Thus Ci¬ cero : “ I defire, fenators, to be merciful, but not to appear negligent in fo great dangers of the flate; tho’ at prefent I cannot but condemn myfeif of remifihefs. There is a camp formed in Italy, at the entrance of Etruria, againlt the ftate ; our enemies increafe daily; but we fee the commander of the camp, and general of the enemies, within our walls, in the very fenate, ontriving fome inteftine ruin to the ftate. If now, Catiline, I fhould order you to be feized and put to death, I have reafon to fear, that all good men would rather think I had deferred it too long, than charge me with cruelty. But I am prevailed with for a certain reafon not to do that yet, which ought to have been **- done long fince.” This fudden turn of the difcourfe to Catiline himfelf, and the addrefs to him in that un- expecfted manner, mufthave touched him very fenfibly. So, in his defence of Milo, exprefling his concern if he ftrould not fucceed in it, he fays, “ And how fhall I anfwer it to you, my brother Quintus, the partner of my misfortunes, who art now abfent.” And elfe- where addrefling to the foldiers of the Martian legion, who had teen killed in an engagement with Mark An¬ tony, he thus befpeaks them: “ O happy death, which due to nature, was paid to your country ! I may efteem you truly born for your country, who likewife received your name from Mars; fo that the fame deity feems to have produced this city for the world, and you for this city.” And in his oration for Balbus he thus calls upon dumb nature to witnefs to Pompey’s virtues - “ I invoke you, mute regions; you, moft di- ftant countries ; you feas, havens, iflands, and flrores. For what coafl, what land, what place is there, in which the marks of his courage, humanity, wifdom, and prudence, are net extant r” An appeal to heaven, - or any part of inanimate nature, has fomething very fnblime and folemn in it, which we often meet with in facred writ. So the divine prophet: “ Hear, O heavens ! and give ear, O earth ! for the Lord hath fpokcn.” And in like manner, the prophet Jeremy : “ Be aftonilhed, O ye heavens, at this.” See Apo¬ strophe. ^3 Profnpopela, or the jitiion of a perfon : by which, ei¬ ther an abfent perfon is introduced fpeaking ; or one who is dead, as if he was alive and prefent ; or fpeeth attributed to fome inanimate being. There is no F O R Y. 445 figure, perhaps, which ferves more or better purpofes Elocution, to an orator than this. For by this means he is en- _v 11 l> abled to call in all nature to his afliftance, and can affign to every thing fuch parts as he thinks conve¬ nient. There is fcarce any thing fit to be faid, but may be introduced this way. When he thinks his own chara£l:er is not of fufficient weight to affeft his audience in the manner he defires, he fubftitutes a per¬ fon of greater authority than himfelf -to engage their attention. When he has fevere things to fay, and which may give offence as coming from himfelf ? he avoids this, by putting them into the mouth of fome other perfon from whom they will be better taken ; or makes inanimate nature bring a charge, or exprefs a refentment, to render it the more affefting. And by the fame method he fometimes choofes to fecure him¬ felf from a fufpicion of flattery, in carrying a com¬ pliment too high. We meet with feveral very beauti¬ ful inftances of this figure in Cicero ; but an example of each fort may here fuffice, beginning with that of an abfent perfon, from his defence of Milo, whom he thus introduces as fpeaking to the citizens of Rome : “ Should he, holding the bloody fword, cry out, At¬ tend, I pray, hearken, O citizens, I have killed Pu¬ blius Clodius ; by this fword, and by this righc hand, I have kept off his rage from your necks, which no laws, no courts of judicature, could reftrain ; it is by my means, that juitice, equity, laws, liberty, fhame, and modefty, remain in the city. Is it to be feared how the city would bear this action? Is there any one now, who would not approve and commend it.” And in his oration for Balbus, he introduces Marius, who was then dead, to plead in his defence: “ Can Balbus (fays he) be condemned, without condemning Marius for a like fa£t? Let him be prefent a little to your thoughts, fince he cannot be fo in perfon ; that you may view him in your minds, though you cannot with your eyes. Let him tell you, he was not unac¬ quainted with leagues, void of examples, or ignorant of war.” And again, in his firft inve&ive againft Ca¬ tiline, he reprefents his country as thus expoftulating with himfelf, and upbraiding him for fuffenng fuch a criminal as Catiline to live. “ Should my country (fays he), which is much dearer to me than my life, ihould all Italy, all the ftate, thus addrefs me, Mark Tully what do you do? Do you furier him, whom you have found to be an enemy, who you fee is to be at the head of the war, whom you perceive your ene¬ mies wait for in their camp as their general, who has been the contriver of this wickednefs, the chief of the confpiracy, the exciter of flaves and profligate citizens, to leave the city, which is rather to bring him in, than let him out ? Will not you order him to be imprifon- ed, condemned, and executed ? What prevents you ? The cuttom of our anceltors ? But private perfons have often puniflied pernicious citizens in this Hate. The laws relating to the punifliment of Roman citizens ? But traitois never had the rights of citizens. Do you feat the cenfure of polterity ? Truly you make a very handfoine return to the people of Rome, who have ad- vanced you from an obfeure condition fo early to the higheft dignity ; if you negled their- fatety to avoid envy, or from the apprehenfion of any danger. And if you fear cenfure ; which is moft to be dreaded, that which may arile from juftice and fortitude, or from 3K 2 cowardice *$’44' Elocution,^ cowardice and treachery ? When Italy fhall be wailed 'r^~J by a war, cities plundered) and houfes burnt, do you think then to efcape the ievereft cenfure.” In the management of this figure, care fhould be taken that what is laid be always confident with the charader in¬ troduced, in which both the force and beauty of it confift. In treating upon figures, wc have hitherto confider- ed them feparately ; but it may not be amifs to ob- ferve, that fome expreffions coniift of a complication ol them, and may come under the denomination of fe¬ deral figures, as well verbal ^ thofe of fentences, differently confidered. Thus when Cicero fays, “ What, Tubero, did your drawn fword do in the Pharfalian battle ? at whofe fide was its point dired- cd ? what was the intention of your arms ?” As he fpeaks to Tubero, it is an apoftrophe ; as the expref¬ fions have much the fame import, and are defigned to heighten and aggravate the fad, it is exergafta ; and as they are put by queftion, it is interrogation. So likewife, in his fecond Philippic, where he fays, ** What can 1 think ? that 1 am contemned ? I fee no¬ thing in my life, intereft, adions, or abilities, as mo¬ derate as they are, which Antony can defpife. Did he think he could eafily leffen me in the fenate ? But they, who have commended many famous citizens for their good government of the ftate, never thanked any but me for preferving it. Would he contend with me for eloquence ? This would be a favour indeed. For what could be a larger and more copious fubjed, that for me to fpeak for myfelf againft Antony ? His de- fign was really this : he thought he could not convince his affociates, that he was truly an enemy to his coun¬ try, unlefs he was fo firft to me.” There are three figures in this paffage ; doubt, interrogation, and fub- jeSion, * nd again, when he introduces Sicily thus addreffing Verres in a way of complaint : “ What¬ ever gold, whatever filvtr, whatever ornaments in my cities, dwellings, temples, whatever right of any kind I pofleffed by the favour of the fenate and people of Rome ; you, Verres, have plundered and taken from me.” Here is z profopopeia, joined with the verbal figure anaphora, as feveral members of the fentence be¬ gin with the fame word. The like inftances of complex figures frequently occur, and therefore we need not multiply examples of them here. PARTICULAR ELOCUTION, Or that part of Elocution which confiders the feveral Properties and Ornaments of Language, as they are made ufe of to form different forts of Style. Chap. IV. Of Style, and its different CharaSlers. Particular T“e word/jvA properly fignifies the inllrument elocution which the ancients ufed in writing. For as they conr- treats of monly wrote upon thin boards covered over with wax, llyle and and fomttimes upon the barks of trees, they made ufe eharSers °f 3 Io.ng in^rument ,ik8 a bodkin, pointed at one end, with which they cut their letters; and broad at the other, to craze .any thing they chofe to alter. And this the Latins called Jlylus. But though this be the fkfi feafe of the word, yet afterwards it came Part III* to denote the manner of expreffion. In which fenfe Elocution, we likewife ufe it, by the fame kind of trope that we —v— call any one’s writing his hand- Style, then, in the com¬ mon acceptation of the word at prefent, is the pecu¬ liar manner in which a man expreffes his conceptions by means of language. It is a pi&ure of the ideas which rife in his mind, and of the order in which they are there produced. As to the reafons which occalion a variety of ftyle, they are principally thde. Since both fpeech and writing are only fenlible ex¬ preffions of our thoughts, by which we communicate them t© others; as all men think more or lefs diffe¬ rently, fo confequently they in fome meafure differ in their ftyle. No two perfons, who were to write upon one fubjed, would make ufe of all the fame words. And were this poffible, yet they would as certainly differ in their order and conne&ion, as two painters, who ufed the fame colours in painting the fame pic¬ ture, would neceffarily vary their mixtures and dif- polition of them, in the feveral gradations of lights and ftiades. As every painter therefore has fomething peculiar in his manner, fo has every writer in his ftyle. it is from thefe internal characters, in a good rneafure, that critics undertake to difeover the true authors of anonymous writings; and to ftiovv that others are fpu- rious, and not the genuine productions of thofe whofe names they bear ; as they judge of the age of fuch writings from the words and manner of expreffion which have been in ufe at different times. And we may often obferve in perfons a fondnefs for fome par¬ ticular words or phrafes; and a peculiarity in the turn or connection of their femences, or in their tranfitions from one thing to another ; by which their ftyle may be known, even when they delign to conceal it. For thefe things, through cuftom and habit, will fometimesr drop from them, notwithftanding the greateft caution to prevent it. There is likewife very often a confiderable difference in the ftyle of the fame perfon, in feveral parts of his- life. Young perfons, whofe invention is quick and lively, commonly run into a pompous and luxuriant ftyle. Their fancy reprefents the images of things to their mind in a gay and fprightly manner, clothed with a variety of circumftanees ; and while they en¬ deavour to fet off each of thefe in the brightelt and moft glittering colours, this renders their ftyle ver- bofe and florid, but weakens the force and llrength of it. And therefore, as their imagination gradually cools, and comes under the conduct of a more mature judgment, they find it proper to cut off many fuper- ftuities; fo that by omitting unneceffary words and circumftances, and by a clofer connection of things placed in a ftronger light, if their ftyle becomes lefs fwelling and pompous, it is,, however, more correCt and nervous. But as old age finks the powers of the mind, chills the imagination, and weakens the judge; ment; the ftyle, too, in proportion ufually grows dry and languid. Critics have obfeived fomething of this, difference in the writings even of Cicero himfelf. To be mailer of a good ftyle, therefore, it feems neceffary that a perfon fhould be endowed with a vigorous mind and lively fancy, a llrong memory, and a good judge; ment. It is by the imagination that the mind con¬ ceives the images of things. If the impreffions of thofe images be clear and diHin^l,. the ftyle will be fo 8 too ORATORY. partHT. , ■ , ° R A r F.Iocufon too; face language is nothing but a copy of thofe V-"""1 images iiril conceived by the mind. But it the images are faint and imperfea, the ftyle will accordingly be flat and languid. This is evident from the difference between fuch obje&s as are reprefented to our fight* and things of which we have only read or heard. For as the former generally make a deeper impreffion upon our minds, fo we can deferibe them in a more ftrong and lively manner. And we commonly find, that, ac¬ cording as perfons are affe&ed themfelves when they fpeak, they are able to affed others with what they fay. Now' perfons are more orkfs affetted with things in proportion to the imprelftons which the images of thofe things make upon the mind. For the fame rea- ibn alfo, if the imagination be dull, and indifpofed to receive the ideas of things, the ftyle will be ftiff and heavy ; or if the images are irregular and difordered, the ftyle will likewife be perplexed and confufed. When things lie ftraight (as we fay) in the mind, we exprTs them with eafe, and in their juft connexion and dependence; but when they are warpt and crook¬ ed, we deliver them with pain and difficulty, as well as diforder. A good fancy ihould likCwife be accompa¬ nied with a happy memory. This helps us to retain the names of thofe things the ideas whereof are pre- fented to the mind by the imagination, together with proper and fuitable phrafes to exprefs them in their fevcral connections and relations to each other.. When the images of things offer themfelves to the mind, un- lefs the names of them prefent themfelves at the fame time, we are at a lofs to exprefs them, or at lead are in danger of doing it by wrong and improper terms. Befides, variety is neceffary in difeourfe to render it agreeable ; and therefore, without a large furniture or words and phrafes, the ftyle will neceffarily become infipid and jejune, by the frequent return of the fame terms and manner of expreffion. But to both thefe a folid judgment is highly requisite to form a juft and accurate ftyle. A fruitful imagination will furnifh the mind with plenty of ideas, and a good memory wdl help to clothe them in proper language ; but unlefs they are both under the condudt of reaion, they are apt to hurry perfons into many inconveniences. Such are generally great talkers, but far from goov. orators. Frefh images continually crowd in upon them,, fader than the tongue can well exprefs them. I hk: runs them into long and tedious difeourfes, abounding with words, but void of fenfe. Many impertinencies, if not improprieties, neceffarily mix themfelyes with what they fay ; and they are frequently carried off from their point, by not having their fancies under a pro¬ per regulation. So that fuch difeourfes, though com- pofed perhaps of pretty expreffions, rhetorical flowers, and fprightly fallies of wit, yet fall very much fhort of a ftrong and manly eloquence. But where reafon prefides and holds the reins, every thing is weighed before it is fpoken. The propereft words are made choice of, which beft fuit the ideas they are defigned to convey ; rather than the moft gay and pompous* All things are not faid which offer themfclves to the mind, and fancy di&ates ; but fuch only as are fit and proper, and the reft are dropped. Some things are but flightly mentioned, and others difeourfed on more largely'and fully, according to their different impor¬ tance. And every thing is placed in that order,, and TORY. 44* clothed in fuch a drefs, as may reprefent it to the Elocution, greateft advantage. So that, in a word, the founda- ^ tion of a good ftyle is chiefly good fenfe. Where thefe qualities all meet in a confiderable degree, fuch perfons have the happinefs to excel, either in fpeaking or writing. But this is not generally the cafe. Many perfons of a vigorous and fprightly imagination, have but a weak judgment ; and others, much more judi¬ cious can think but flojjdy. And it is this, in a great meafure, which makes the difference between fpeaking and writing well, as one or the other of thefe qualities is predominant. A perfon of a lively fancy, ready wit. and voluble tongue, will deliver himftlf oft hand much better and more acceptably, than one who is capable upon due premeditation, to chfcern farther in¬ to the fubjeft, but cannot command his thoughts with the fame eafe and freedom. And this latter would have the fame advantage of the other, were they both coolly to offer their fentiments in writing. Many things appear well in fpenking, which a ill not bear a ft rift ferutiny. ’While the hearer’s attention is obliged to keep pace with the fpeaker, he is not at lei fur e to obferve every impropriety or incoherence,, but many flips eaflly efcape him, which in reading are prefently difeovered. lienee it is often found, that difeourfes, which were thought very fine when heard, appear to have much lefs beauty, as well as ffre.ngth, when they come to be read. And therefore it is not without reafon, that Cicero recommends to all thof'e who are candidates for eloquence, and defirous to be¬ come mafters of a good ftyle, to write much. This affords them an opportunity to digeft their thoughts, weigh their words and expreffions, and give every thing its proper force and evidence ; as likewife, by reviewing a difeourfe when compofed, to correft its errors, or fupply its defeats; till by practice they gnm a readinefs both to think juitly, and to fpea c with propriety and eloquence. But it is time to proceed to fame other caufes of the diverfity of ftyle. Different countries have not only a different lan¬ guage, but likewife a peculiarity of ftyle fuited to theit temper and genius. I he eaftern nations had a lotty and majeftic way of fpeaking. Their words are full and fonorous, their expreffions ftrong and forcible, and wiarrived with the moft lively and moving figures. This is very evident from the jewifh writings in the Old Teftament, in which we. find a moft agreeable mixture of fimplicity and dignity. On the contrary, the ftyle of the more northern languages generally partakes ©f the chilnefs of their climate. “ 1 here- is [fays Mr Addifon*) a certain coidnefs and ffidiffe-*Sfefr rence in the phrafes of our European languages, whenn04&*. they are compared with the oriental forms of fpeech. And it happens very luckily, that the Hebrew idioms run into the Englifh tongue with a peculiar grace and beauty. Our Language has received innumerable ele¬ gancies and improvements from that infufion of He- braifms, which arc derived to it out of the poetical paflages in holy writ. They give a force and energy to our expreffions, waim and animate our language, and convey our thoughts in more ardent and intenfe phrafts than any that are to be met with in our own- tongue. There is fomething fo pathetic in this kind ofdi&ion, that it often fets the mind in a flame, and makes our hearts burn within us.” Again,, 446 fc locution, orator y. Again, people o? iiiTerent nations vary in their cu- of running into the mode, ttoms and manners, which oecafions a diverfity in their ' idvle. This was very remarkable in the Attics, Afia- ftyl tics, ano]^ Rhodians, and is often taken notice of by an cient .writers. The Athenians, while they continued a fire ftate, were an active, induftrious, and frugal people ; very polite indeed, and cultivated arts and iciences^beyond any other nation: but as they had powerfm enemies, and were exceedingly jealous of their liberties, this preferved them from wantonnefs and luxury. And their way of fpeaking was agreeable to their conduct ; accurate and clofe, but very full and expnffive. The Afiatics, on the other hand, vrae more gay, and loofe in their manners, devoted to luxury and pleafure; and accordingly they affedted a florid and fwelling ftyle, filled with redundancies and fuperfluities of exprefiion. Indeed, fome of the ancients have attributed this loofenefs of llyle to their way of purfuing eloquence at firft. For as they were put upon it by converling with the Greek colonies who fettled among them, they fuppofe, that, in imi¬ tating them, before they were matters of the language, they were often obliged to make ufe of circumlocu¬ tions, which afterwards became habitual, and very much weakened the force of their expreffions, as it naturally would do. But one would think, if they were put to this necefiity at firft, when they found its id efTedt, they might eafily have amended it after¬ wards, as they grew better acquainted with the Greek language, had they been inclined fo to do. The Rhodian ftyle was a medium between the other two ; not fo concife and exprefiive as the Attic, nor yet fo loofe and redundant as the Afiatic. Quintilian fays, it had a mixture of its author, and the humour of the people ; and, like plants fet in a foreign foil, degene¬ rated from the Attic purity, but not fo wholly as to lofe it. They firft received it from ^Efchines, who be¬ ing worfted in his famous conteft with Demofthenes, retired thither, and taught rhetoric, which put them upon the ftudy of eloquence. T. he fty le of the fame country likewife very much alters in different ages. Cicero tells us, that the firft Ijatm hiftonans aimed at nothing more than barely to make themfeives intelligible, and that with as much brevity as they could. Fhofe who fucceeded them advanced a ftep further ; and gave fomewhat a better turn and cadency to their fentences, though ftill with¬ out any drefs or ornament. But afterwards, when the Greek language became fafifionable at Rome, by co¬ pying after their writers, fuch as Herodotus, Thucy¬ dides, Xenophon, and others, they endeavoured to in- tioduce ail their beauties into their own tongue, which in Cicero s time was brought to its higheft perfection. But it did not long continue in that ftate. A dege¬ neracy of manners foon altered their tafte, and cor¬ rupted their language, which Quintilian very much comphins or in his time. The cafe was the fame with refped to the Greek tongue ; though that had the S? t fortune to continue its purity much longer than the Latin. Nor can any language be exempt from tne common fate, of all human productions ; which have their beginning,.perfeCtion, and decay. Befides, there is a fort of fafhion in language, as well as ocher ' things ; and the generality of people are always fond Part III. r ^ erhaps fome one, or a Elocution* few perfons, fall into a manner which happens to' v—^ pleafe. This gives them a reputation ; and others im- mediately copy after them, till it generally prevail. Cicero tells us, that the moft ancient Greek orators whofe writings were extant in his time, fuch as PerU ties, Alcibiades, and others, were fubtle, acute, con¬ cife, and abounded in fenfe rather than words. But another fet that followed them, of which were'Critias I heramenes, and Lyfias, retained the good fenfe of the former, and at the lame time too.k more care of their ftyle ; not leaving it fo bare as the former had done, but furni filing it with a better drefs. After thefe came Ifocrates, who added all the flowers and beauties of eloquence. And as he had abundance of followers, they applied thefe ornaments and decora¬ tions according to their different genius; fome for pomp and fplendor ; and others to invigorate their ftyle, and give it the greater force and energy. And in this latter way Demofthenes principally excelled. Now as each of thefe manners had its peculiar beau¬ ties, and generally prevailed in different ages, Cicero thinks, this could «iot have happened otherwife than from imitation. And he attributes it to the fame caufe, that afterwards they funk into a fofter and fmoother manner, not lefs exadt and florid, but more cold and IL'elefs. If we take a view of our own tongue, Chaucer feems to have been the firft who made any confiderable attempts to cultivate it. And whoever looks into his writings, will perceive the diffe¬ rence to be fo great from what it is at prefent, that it fcarce appears to be the fame language. The gradual improvements it has fince received, are very evident in the writers almoft of every fucceeding age fince that time ; and how much farther it may ftill be carried, time onlv can difeover. See Language.• For the Englifli language in particular, fee nQ 38. for the other European languages, as well as the Greek and Latin, fee nv 27, Sco. Another caufe of the variety of ftyle arifes from the different nature and properties of language. A dif¬ ference in the letters, the make of the words, and the order of them, do all affed the ftyk. So Quintilian obferves, that the Latin tongue cannot equal the Greek in pronunciation, becaufe it is harftier. The Latins want two of the fofteft Greek letters, v and £ ; and ufe others of a very hard found, which the Greeks have not, as/'and q. Again, many Latin words end in w ; a letter of a broad and hollow found, which never terminates any Greek word ; but » does fre¬ quently, whofe found is much fofter and fweeter. Be¬ fides, in the combination of fylhbles, the letters b and d are often fo fituated, as to require too itrong and unequal a force to be laid upon them, as it the words obverjus and adjungo. Another advantage of the Greek tongue arifes from the variety and different feat of the accents : for the Greeks often accent the Lift fyllable, which both enlivens the pronunciation and renders it more mufical; whereas the Latins never do this. But the greateft advantage of the Greeks lies in their plenty and variety of words ; for which reafon they have lefs occafion for tropes or circumlocutions, which, when uted from neceffity, have generally lefs force, and weaken the ftyle. But under thefe difadvantages, 7 Quin- PartHI. ORA glrcution. Quintilian Teems to give his countrymen the bell ad- vice the cafe will admit of: That what they cannot do in words, they fhould make up in fenfe. If their exprefftons are not To Toft and tender, they fhould ex¬ ceed in ftrength ; if they are lefs fubtile, they fhould be more fublime ; and if they have fewer proper words, they fhould excel in the beauty as well as num¬ ber of their figures. If this account of Quintilian be juft, that the Greek tongue does furpafs the Latin in all thefe inftances, it is certain that both of them have much greater advantages over fome modern lan¬ guages. The varying all the;r declinable words, both Houns and verbs, by terminations, and not by figns, contributes very much to the fmoothnefs and harmony of their periods. Whereas in the modern languages, thofe fmall particles and pronouns which diftinguifh the cafes of nouns and the tenfes and perfonsof verbs, hinder the run of a period, and render the found much more rough and uneven. Befides, the ancient lan¬ guages feem to have a better and more equal mixture of vowels and confonants, which makes their pronun¬ ciation more eafy and mufical. But the chief diftindlion of ffyle arifes from the dif¬ ferent fubjefts or matter of difeourfe. The fame way of fpeaking no more fuits all fubje&s, than the fame garment would all perfons. A prince and a peafant ought not to have the fame drefs ; and another diffe¬ rent from both becomes thofe of a middle ftation in life. The ftyle therefore fhould always he adapted to the nature of the fubjeft, which rhetoricians have re¬ duced to three ranks or degrees; the /ou/ or ft/flin ftyle, the middle or temperate, and 'the lofty or fublime ~ Which are hkewife called charabiers, becaufe they de¬ note the quality of the fubjedft upon which they treat. This divifion of ftyle into three characters, was taken notice of very eurly by ancient writers. Some have, obferved it even in Homer, who feems to aflign the Jublime or magnificent to UlyfTes, when he reprefents him fo copious and vehement an orator, that his words came from him like winter /now. On the contrary, he deferibes Menelaus as. a polite fpeaker, but concife and moderate- And when he mentions Nefter, he reprefents his manner as between thefe two, not fo high and lofty as the one, nor yet fo low and depreffed as the other ; but fmooth, even, and pleafant, or, as he expreffes it, more fweet than honey. Quintilian obferves, that although accuracy and politenefs were general charafters of the Attic writers ; yet among their orators, Lyfias excelled in the low and familiar way ; Ifocrates for his elegancy, fmoothnef, and the fine turn of his periods ; and l)e- mofthenes for his flame and rapidity, by which he car¬ ried all before him. And Gellius tells us, that the like difference was found in the three philofophers who were fent from the Athenians to Rome (before the Romans had any relifh for the polite arts) to foli- cit the remittance of a fine laid upon them for an in¬ jury done to a neighbouring ftate. Carneades, one of thofe ambaifadors, was •vehement and rapid in his ha¬ rangues ; Critolaus, neat and fimooth ; and Diogenes, modejl andfiober. The eloquence of thefe orators, and the agreeable variety of their dift’erent manner, fo cap¬ tivated the Roman youth, and inflamed them with a love of the Grecian arts, that old Cato, who did all he could to check it by hurrying away the. ambafla- T O R Y. 447 dors, could not prevent their vigorous purfuit of them, Elocution, till the ftudy became in a manner univerfal. And the i—J old gentleman afterwards learned the Greek language himfelf, when it became more fafhionable. Which a noble writer of ours * reprefents as a punifisment upon ^ jor { him for his former crime. It feldom happens that the C(jny fame perfon excels in each of thefe characters. They feem to require a different genius, and mail people are naturally led to one of them more than another ; though all of them are requifite for an orator upon different occafions, as we fliall fhow hereafter. Chap. V. Of the Low Style. This we fhall confider under two heads, thoughts The low and language ; in each of which the feveral charatters ^7^ cor!~ are diftinguiftied from one another. fidered 1. And with refpect to the former, as the fubje61 st^uJht proper for this ftyle are either common things, or fuchand Tan¬ as fliould be treated in a plain and familiar way ; foguage- plain thoughts are moft fuitable to it, and diftinguifli it from the other charadlers. Now, by plain thoughts, are meant fuch as are ioi Ample and obvious, and feem to rife naturally from the fubje6f, when duly confidered ; fo that any one, upon firft hearing them, would be apt to imagine they- mutt have occuired to himfelf. Not that this is really the cafe, but becaufe the more natural a thing is, the more eafy it feems to be ; though in reality it is often otherwife ; and the perfedfion of art lies in its neareil refemblance to nature. And therefore, in order to fpeak plainly and clearly upon any fubjedl, it muft firfl be duly confidered,. well underftood, and thoroughly digefted in the mind ; which, though it require labour and ftudy, yet the more a perfon is matter of what he fays, the lefs that labour will appear in his dif- courfc. This natural plainnefs and fimplicity, with¬ out any difguife or affe&ation, very much contributes to give credit to what is faid. Nor is any thing more apt to impofe on us, than the appearance of this, when artfully affumed. Cicero’s account of the fight be¬ tween Milo and Clodius, in which Clodius was killed, is a remarkable inftance of this. “ When Clodius knew {fays he) that Milo was obliged to go to La-~~ nuvium upon afolemn and neceffary occafion, he im¬ mediately haftened from Rome, the day before, to af- faffinate him before Clodius’s own houfe, as appeared afterwards by the event. And this he did at a time, when his turbulent mob in the city wanted his affift- ance j whom he would not have left, but for the ad¬ vantage of that place and feafon to execute his wicked defign. But the next day Milo was in the fenate, where he continued till they broke up; then went home; changed his drefs; ftaid there fome time till his wife was ready ; and afterwards fet forward fo late, that if Clodius had defigned to return to Rome that day, he might have been hereby that time. Clodius, prepared for his defign, met him on horfeback, having no cha¬ riot, no equipage, no Greek attendants as ufual; and without his wife, which was fcarce ever known : where¬ as Milo was in a chariot with his wife, wrapt up in a cloak, and attended by a large retinue of maid fer- vants, pages, and other perfons unfit for an engage¬ ment. He met with Clodius before his houfe, about five o’clock in the evening ; and was prefently affault- ed 44S O R A T Elocution. etJ frorn an higher ground by many armed men, who killed the coachman. Upon which, Milo, throwing off his cloak, leaped out of the chariot, and bravely defended himfelf: and thofe who were with Clodius, having their fwords drawn, fome made up to the cha¬ riot to attack Milo ; and others, who now thought he had been killed, began to fall upon his fervants, who were behind. And of thefe, fuch as had courage, and were faithful to their mailer, fome were killed ; and others when they faw the fkirmifh at the chariot, and could do their mailer no fervice (for they heard Clodius himfelf fay that Milo was killed, and really thought it was fo), did that, not by their mailer’s or¬ der, nor with his knowledge, nor when he was prefent, which every one would have his own fervants to do in the like circumllances. I do not fay this to fix any crime upon them, but only to relate what happened.” His meaning is, they killed Clodius; which he avoids mentioning, to render what he fays lefs offenfive. Can any thing be told in a more plain and fimple manner than this ? Here is nothing faid, but what in itfelf feems highly probable, and what one would imagine the fa£t might eafily fuggell to any ordinary fpecla- tor. But in this, both the art and Ikill of it confift. For in the whole account, as, on the one hand, Milo 43 fo deferibed as to ■ render it highly improbable he could have any defign at that time againll Clodius ; fo on the other, no one cireumflance is omitted which might feem proper to perfuade the hearers that Clo¬ dius was the aggrefibr in that engagement. And yet, if we may believe Afconius, the quarrel was begun by fome of Milo’s retinue, and Clodius was afterwards killed by his exprefs order. But as things are fome- times beft illuftrated by their oppofites, we fhall here produce a contrary inftance of a very affedled and un¬ natural way of relating a fact. Val. Maximus tells us of a learned man at Athens, who, by a blow which he received by a (lone upon his head, entirely forgot all his learning, though he continued to remember every thing elfe. And therefore, as he fays, fincethis mif- fortune deprived him of the greateft enjoyment of his life, it had been happier for him never to have been learned, than afterwards to lofe that pleafure. This is the plain fenfe of the ftory. But now let us hear him relate it “ A man (fays he) of great learning at Athens, having received a blow upon his head by a {lone, retained the memory of all other things very perfe6lly, and only forgot his learning, to which he had chiefly devoted himfelf. The direful and malig¬ nant wound invading his mind, and as it were defign- edly furveying the knowledge repofited there, cruelly feized on that part of it in particular from which he received the greateft pleafure, and buried the Angular learning of the man with an invidious funeral. Who fince he was not permitted to enjoy his ftudies, had better never have obtained accefs to them, than after¬ wards to have been deprived of the delight they af¬ forded him.” What an unnatural way is this of re¬ lating fuch an accident, to talk of a wound invading the mindi and furveying the knowledge repojhed there, and cruelly ferzing a particular part of it, and buryi:g it with an invidious funeral ? There is nothing in the ilory could lead him to this, but an over fondnefs to refine upon it in a very affedled manner. But there are two properties of plain thoughts, one of which ■N° 2J2. O R Y. Part III, ought.conffautly to attend them In common with all Elocution, thoughts, and the other is often neceffary to animate and enliven this character. The former of thefe is juftnefs and propriety, which is what reafon didlates in all cafes. What Cicero fays of the death of Crafi'us the orator, feems very juft, as well as natural. “ It was (fays he) an afflillion to his friends, a lofs to his country, and a concern to all good men ; but fuch public calamities follo'wed upon it, that heaven feemed rather to have favoured him with death, than to have deprived him of life.” This thought feems very juft, and agreeable to the fenti- ments of a good man, as Craffus was ; to choofe death rather than to outlive the happiuefs of his country, to which he himfelf had fo much contributed. Quintilian has a refle&ion upon a like occafion, which is not fo juft and becoming. It is upon the death of his only fon, a youth of very uncommon parts, as he reprefents him ; and for whofe ufe he had defigned his Injlitu- tions of Oratory ; but he died before they were fintfti- ed. The paffage is this : “ I have loft him of whom I had formed the greateft hopes, and in whom I had repofed the greateft comfort of my old age. What can I do now ? or of what farther ufe cau I think my- felf to be, thus difappointed by heaven ? What good parent will pardon me, if I can any longer ftudy ? and not condemn fuch refolution, if, thus furviving all my family, I can make any other ufe of my voice, than to accufe the gods, and declare that providence does not govern the world ?” Allowance may be made for the {allies of paffion, even in wife men, upon fome {hocking occafions ; but when it proceeds to fuch a degree as to become impious, it is very indecent, as well as unjuft. And all indecency is unnatural, as it is difagreeable to reafon, which always dire&s to a de¬ corum. That feems to be a very natural as well as juft thought of Pliny the Younger, when he fays, “ The death of thofe perfons always appear to me too hafty and unfeafonable, who are preparing fome lalt- ing work. For perfons wholly devoted to pleafures, live, as it were, from day to day, and daily finilh the end for which they live : but thofe who have a view to pofterity, and preferve their memory by their labours, always die untimely, becaufe they leave fornething un- finifhed.” We ihall mention but one more inftance ; and that in a comparative view, to make it \he more evident. The two fons of Junius Brutus, the firft Ro¬ man conful, having been convicted of treafon in aflb- ciating with Tarquin’s party, were ordered, among others, to be put to death ; and their father not only pronounced the fentence, but prefided at the execu¬ tion. This faft is mentioned by feveral of the Ro¬ man hiftorians ; and, as it carries in it not only the appearance of rigorous juftice, but likewife of cruelty in Brutus, to have been prefent at the execution of his fons, they endeavour to vindicate him different ways. What Florus fays, feems rather an affe£lation of wit, th;.n a juft defence of the faft. “ He beheaded them (fays he), that being a public parent, he might ap¬ pear to have adopted the whole body of the people.” Nor does Val Maximus come up to the cafe, who fays, “ He put off the father to aft the conful; and chofe rather to lofe the fons, than be wanting to pub¬ lic juftice.” This might be a reafon for condemning them ; and would have been equally true, had he not been Part III. Elocution been preFent at their execution. thoughts are generally very juft and natural, afiigns the heft reafon which perhaps can be given for his vindication, when he fays, “ Fortune made him the executioner of the fentence, who ought not to have been a fpeftator.” By (zy 'mg fortune made him fa, he . repreftnts it not as a matter of choice, like the other hiilorians, hut of neceflity, from the nature of his office, which then obliged him to fee the execution of that fentence he had himfelf before pronounced ; as is the cuftom at prefent, in fome popular governments. The other property, which fhould often accompany plain and iimple thoughts, is, that they be gay and fprightly. This, as has been faid, is neceffary to ani¬ mate and enliven fuch difcourfes as require the low flyle. The fewer ornaments it admits of, the greater fpirit and vivacity is requifite to prevent its being dry and jejune. A thought may be very brifk and lively, and at the fame time appear very natural, as the effcdl of a ready and flowing wit. Such thoughts, attend¬ ed with agreeable turns, are very fuitable tothisftyle; but care ihould be taken, left, while fancy is too much indulged, the juftnefs of them be overlooked. We fhall give one inftance, in which this feeir.s to have been the cafe, from a celebrated Engliffi work, where the ingenious writer endeavours to ffiow the difadvan- tages of perfons not attending to their natural genius, hut affedting to imitate others in thofe things for which they were not formed. “ The great misfor¬ tune (fays he) of this affectation is, that men not only loft a good quality, but alfo contraft a bad one ; they not only are unfit for what they are deligned, but they affign themfelves to what they are unfit for; and inftead of making a very good figure one way, make a very ridiculous one another. Could the world be reformed to the obedience of that famed dictate, id?/- /ow nature, which the oracle of Delphos pronounced to Cicero when he confulted what courfe of ftudies he fhould purfue, we fhould fee almoft every man as eminent in his proper fphere as Tully was in his. For my part, I could never confider this prepofterous repugnancy to nature any otherwife, than not only as the greateft folly, but alfo one of the moil heinous crimes ; fince it is a diredt oppofition to the difpofi- tion of providence, and (as Tully exprefils it) like the fin of the giants, an actual rebellion againft heaven.” The advantages that arife from peifons attending to their own genius-, and purfuing its dictates, are here reprefented in a very lively and agreeable manner. But there is one thing afferted, which we fear will not hold ; which is, that, Could the world he reformed to that di8ate, “ Follow nature,” we floould fee almofl every manias eminent in his proper fphere as 'Tully was in his. For though doubtlefs perfons would generally fucceed beft if they kept to this rule ; yet different degrees of ability are often found, where the bias and inclination is the fame, and that accompanied with equal labour and diligence. If this was not fo, how happened it that no one came up to Tully in the art of oratory; efpecially in his own age, when there were the greateft opportunities for that ffudy, and the higheft encouragements were given to it, as it paved the way to riches, honours, and all the grand offices of the ftate ? It cannot well be queftioned, but that there were other gentlemen, who had all the fame ad- Vol.XIII. Pauli. 2 ORATORY, 449 But Livy, whofe vantages, accompanied with as ftrong a paifion for this Elocution art, as Tutly had, who yet fell much fhort of him in point of fuccefs. And experience fhowa, that the cafe has been the fame in all other purfuits. IOj III. But it is time to proceed to the other head, The lan- the language proper for this ftyle. And here it may Ku.^e.prs* be obfetved in general, that the drefs ought to this ftylfc. agreeable to the thoughts, plain, ample, and unaffec¬ ted. But the rirft thing that comes under confideratioh is elegance, or a proper choice of words and expref- fions; which ought always to fait the idea they are defigned to convey. And,therefore when an ancient writer, fpeaking of cruelly, calls it navus crudelitalisf the blemifh of cruelty ; and another, applying the fame word to ingratitude, * lys navus ingratitudmis, the blemifh of ingratitude ; that term does not fufficiencly convey to us the odious nature of either of thofe vices, as indeed it was not their defign it fhould. But other- wife, where the fpeaker has not fome particular view in doing it, to fink too low is as much a fault as to rife too high. So to call ancient Rome the rnflrefs of Italy, would as much leffen the jiaft notion of the ex¬ tent of her power, as the Roman writeis aggrandife it when they ftyle her mflrefs of the world. But pu¬ rity, both in the choice of woYds and exprtffions, is never more neceffary than it is here. 'This may be called neatnefs in language. And to be plain and neat at the fame time, is not only very coafiftcnt, but the former can no other way recommend itfelf, than as joined with the latter. Befides, the fewer advantages any thing has to fet it off, the more carefully they ought to he obferved. Perfpicuity is always to be re¬ garded ; and ferves very much to keep up the atten¬ tion, where other ornaments are wanting. Epithets fhould be fparingly ufed, fince they enlarge the images of things, and contribute very much to heighten the ftylc. Indeed they are fometimes neceffary to fet a thing in its juft light; and then they fhould not be dropped. Thus, in fpeaking of Xerxes, it would be too low and fiat to lay, He defended with his army into Greece. Here is no intimation given of their vaft and unparelleled numbers, which ought to Le done. Herodotus fays, his whole army, of fea and land for¬ ces, amounted to 2,3 17,000 and upwards. Therefore, unlefs the number be mentioned, the lead, that can be faid is, that he defeended with a raft army. The next thing to be regarded is eompofition, which here does not require the greateft accuracy and exa£tnefs. A feeming negligence is fometinr.es a beau¬ ty in this ftyle, as it appears more natural. Short fentences, or thofe of a moderate length, are likewife upon the whole'beft fuited to this character. Long and accurate periods, finely wrought up with a gradual rife, harmonious numbers, a due proportion of the ffiveral parts, and a juft cadency, are therefore Impro¬ per, as they are plainly the effect of art. But yet fome proportion fhouid be obfirved in the members, that neither the ears be too much defrauded, nor the fenfe obfeured. Of this kind is that expreffion of a Greek orator, blamed by Demetrius : Ceres came rea¬ dily to our affiance, but At;jinks not. The latter member ol this fentence is too fhort; and by dreppin r fo fuddenly, both difappoints the ears, and is foine- what obfeure. It would have beta plainer and more 3 L agreeable 45° Elocution. O R A T agreeable thus, lut j4rjlides did not come. As to or¬ der, the plain eft and deareft difpofition, loth of the words and members of ftntencts, and what is moil agreeable to the natural conftru&ion, bed fuits with this char after. For one of its principal beauties is perfpicuity. And a proper conneftion likewife of fentences, with a regular order in the dependence of things one upon another, very much contribute to this end. With regard to the collifion of fyllables in dif- feient words, for preventing either an hollownefs or afperity of found, greater liberty may be taken in this ftyle than in the other charafters. Here it may be al¬ lowed to fay, Virtue is amiable to all, though all do not purfue it. But in an higher charafter, perhaps, in order to prevent the hollow found of the words though all, a perfon would citoofe to vary the expref- fion a little, and fay, though few purfue it. So, Xerxes’ expedition, rmy be tolerable here ; but in the florid ftyle, the expedition of Xerxes would found much better. The laft thing to be confidered, with refpeft to the language, is dignity, or the ufe of tropes and figures. And as to tropes, they ought to be ufed cau- tioufly ; unlefs fuch as are very common, and by time have either come into the place of proper words, or at leaft are equally plain and clear. So in the inftance mentioned above, Diodorus Siculus, fpeaking of the forces of Xerxes, calls them an innumerable company. Where, by nfynecdocbe, he has chofe to make ufe of an uncertain number for a certain, as lefs liable per¬ haps to exception. Other examples might be given if neceflary; And with regard to figures, as moft of thofe vi hich confiit in words, and are therefore called verbal figures, ferve chiefly to enliven an exprefiion, and give an agreeable turn, they are often not impro¬ per for this charafter. Nor are figures of fentences wholly to be excluded, efpecially fuch as are chiefly ufed in reafoning or demonftration. But thofe which are more peculiarly adapted to touch the pafiions, or paint things in the ftrongeft colours, are the more proper ornaments of the higher ftyles, as will be fhown hereafter. Upon the whole, therefore, pure nature, without any colouring, or appearance of art, is the diftinguifli- ing mark of the low ftyle. The defign of it is to make things plain and intelligible, and to fet them in an eafy light. A nd therefore the proper fubjefts of it are epiftles, dialogues, philofoplucal diflertations, or any other difeourfes, that ought to be treated in a plain and familiar manner, without much ornament, or ad- drefs to the paffions. A freedom and eafe both of thought and expreffion, attended with an agreeable humour and pleafantry, are its peculiar beauties that engage us. As we fee perfons of fafliion and good breeding, though in the plaineft habit, have yet forne- thing in their air and manner of behaviour that is very taking and amiable. Somewhat of the like na¬ ture attends this ftyle. It has its difficulties, which are not fo eafily difeerned but from experience. For it requires no final) ikill to treat a common fubjeft in fuch a maimer as to make it entertaining. The fewer ornaments it admits of, the greater art is necefi'ary to attain this end. Lofty fubjefts often engage and cap- by the fublimity of the ideas. And tne florid ftyle calls in all the affiftance of language O R Y. Part III. and eloquence. But the plain ftyle is in a great mea-^10Cllt*<'n' fure dripped of thofe advantages; and has little more ' to recommend it, than its own native beauty and fim- plicity. Chap. VI. Of the Middle Style. This we /hall treat in the fame manner as we 103 did the former, by confidering firft the matter, and then the language proper for ft. 104 1. And as the fubjefts proper for this ftyle areThe middIe things of weight and importance, which require both dSdTt a gravity and accuracy of expreffion ; fo fine thoughts matter and are its diftingui/hing mark, as plain thoughts are oflaa£ua£e’ the low charafter, and lofty thoughts of the fub- lime. Now a fine thought may deferve that cha¬ rafter from fome or other of the following proper¬ ties. And the firft property we /hall mention is gravity and dignity. Thus Cicero, in a fpeech to Cjefar, fays, “ It has been often told me, that you have frequent¬ ly faid, you have lived long enough for yourfelf. I be¬ lieve it,.if you either lived, or was born for yourfelf only.” . Nothing could either be more fit and proper, than this was, when it was fpoken ; or at the fame time a finer compliment upon Casfar. For the civil war was now over, and the whole power of the Ro¬ man government in the hands of CaTar ; fo that he might venture to fay, he had lived long enough for himfelf, there being no higher pitch of glory to which his ambition could afpiie. But then there were many things in the ftate that wanted redreffing, after thofe times of diforder and confivfion, which he had not yet been able to effeft, and of which Cicero here takes an opportunity to remind him. We /hall produce an¬ other example from Curtins. Philotas, one of Alex¬ ander’s captains, having formed a confpiracy againft him, was convifted of it, and put to death. Amin- tas, who was fufpefted of the fame crime, by reafon of his great intimacy with Philotas, when he comes to make his defence, among other things fpeaks thus: “ I am fo far from denying my intimacy with Philo¬ tas, that I own I courted his friendfhip. Do you wonder that we /bowed a regard to the fon of Parme- nio, whom you would have to be next to yourfelf, gi¬ ving him the preference to all your other friends? You, Sir, if I may be allowed to fpeak the truth, have brought me into this danger. For to whom elfe is it owing, that thofe who endeavoured to pleafe you, ad- dreffed themfelves to Philotas ?. By his recommenda¬ tion we have been raifed to this /hare of your friend- /hip. Such was his intereft with you, that we court¬ ed his favour, and feared his difpleafure. Did we not all in a manner engage ourfelves by oath, to have the fame friends, and the fame enemies, which you had ? Should we have refufed to take this, which you as it were propofed to us ? Therefore, if this be a crime, you have few innocent perfons about you ; nay, indeed none. For all defired to be the friends of Philotas $ though all could not be fo who defired it. There¬ fore, if you make no difference between his friend* and accomplices, neither ought you to make any be¬ tween thofe who defired to be his friends, and thofe who really were fo.” Could any thing be finer fpoken, more proper, and becoming the charafter of a foi- 1 dier. Part IIT,^ O R. A I* Elocution. dier, than this defence ; efpecially to a prince of fo 1 great and generous a fpirit as Alexander ? There is fomething which appears like this in Tacitus with re¬ lation to the emperor Tiberius, but falls vaftly fhort of it in the juftnefs and dignity of the fentiment. Se- ianus, his great favourite, and partner in his crimes, falling under his difpleafure, was, like Philotas, put to death for a confpiracy. Now a Roman knight, who apprehended himfelf in danger on account of his friendfhip with Sejanus, thus apologizes for him¬ felf to the emperor, in the manner of Amintas : “ It is not for us to examine the merit of a perfon whom you raife above others, nor your reafons for doing it. The gods have given you the fovereign power of all things, to us the glory of obeying. Let confpiracies formed againft the ftate, or the life of the emperor, be punifhed ; but as to friendfhips and private re¬ gards, the fame reafon that juitifies you, Caefar, ren¬ ders us innocent.” The turn of the exprefiions is not much different from that in the cafe of Amintas, but the beauty of the thought is fpoilcd by the flat* tery of complimenting Tiberius upon an excefs of power, which he employed to the deftrudion of many excellent men. There is not that impropriety in the defence of Amintas, which is equally brave and juft. Another property of a fine thought is beauty and i elegance. It is a fine compliment which Pliny pays to the emperor Trajan, when he fays, “ It has happen¬ ed to you alone, that you was father of your country, before you was made fo.” borne of the Roman em¬ perors had been complimented with the title oifather of their country, who little deferved it. But I rajan Irtd a long time refuted it, though he was really fo, both by his good government, and in the efteem of his fubjeds, before he thought fit to accept xT it. And Pliny, among other inftances of the generofity of that prince, which he mentions in the fame dif- courfe, fpeaking of the liberty that he gave the Ro¬ mans to purchafe eftates which had belonged to the empeiors, and the peaceable poffeffion they had of them, does it by a turn of thought no lefs beautiful than the former. “ Such'(fays he) is the prince’s bounty, fuch the fecurity of the times, that he thinks us worthy to enjoy what has been polfelled by em¬ perors ; and we are not afraid to be thought fo.” There is a fprightlinefs in this image, which gives it a beauty ; as there is likewife hi the following paffage of the fame difeourfe, where he fays to i rajan, “ Your life is difpleafing to you, if it be not joined with the public fafety ; and you fuffer us to wifh you nothing but what is for the good of thofe who wilh it.” And of the fame kind is that of Cicero to Cae¬ far, when he fays, “ You, Caefar, are wont to for¬ get nothing but injuries.” It is a very handfome, as well as juft reiledion, made by Tacitus upon Galba’s government, that, “ He feemed too great for a pri¬ vate man, while he was but a private man ; and all would have thought him worthy of the em¬ pire, had he never been emperor.” The beauty of a thought may give us delight, though the fubjed be for rowful; and the images of things in them- felves unplcafant may be fo reprefented as to become agreeable. Sifigambis, the mother of Darius, after the death of her fon, had been treated by Alexander Q R Y, 451 with the greateft regard and tendernefs, in whole Elocution.^ power ftie then was. So foon as fire heard therefore that he was dead, fire grew weary of life, and could not bear to outlive him. Upon which Q^Curtius makes this fine refledion : “ Though fhe had cou¬ rage to furvive Darius, yet Ihe was afhamed to outlive Alexander.” The next property of a fine thought, which we flrall mention, is delicacy. As, in the objeds of our fenfes, thofe things are faid to be delicate which affed us gradually in a foft and agreeable manner; fo a delicate thought is that which is not wholly difeovered at once, but by degrees opening and unfolding itfelf to the mind, difclofes more than was at firft perceived. (Quintilian feems to refer to this, when he fays, “ Thofe things are grateful to the hearers, which when they apprehend, they are delighted with their own fagacity ; and pleafe themfelves, as though they had not heard, but difeovered them.” Such thoughts are not unlike the Iketches of fome pidures, which let us into the defign of the artift, and help us to dif- cern more than the lines themfelves exprefs. Of this kind is that of Saliuft : “ In the greateft fortunes, there is the leaft liberty.” This is not often fo in fad, but ought to be; both to guard againft an abufe of power, and to prevent the effeds of a bad example to inferiors. Pliny, fpeaking of theemperor Trajan’s entry into Rome, fays, Some declared, upon fee- ing you, they had lived long enough ; others, that now they were more defirous to live.” The complL ment is fine either way, fince both mull efieem the light of him the greateft happinefs in life ; and in that confiftency lies the delicacy of the thought. It was a fine chirader given of Grotius, when very young, on the account of his furprding genius and uncommon proficiency in learning, that he was born a man : As if nature, at his coming into the world, had at once furnilhed him with thofe endowments which others gradually acquire by ftudy and appli¬ cation. The la ft property of a fine thought, which we lhall take notice of, is novelty. Mankind is naturally plea- fed with new things; and when at the fame time they are fet in an agreeable light, this very much heightens the pleafure. Indeed there are few fubjeds, but what have been fo often cenfidered, that it is not to be ex- peded they fhould afford many thoughts entirely new; but the fame thought fet in a different light, or ap¬ plied to a different occafion, has in fome degree a claim of novelty. And even where a thing hath been fo well faid already, that it cannot eallly be mended, the revival of a fine thought often affords a pleafure and entertainment to the mind, though it can hrve no longer the claim of novelty. Cicero, in his treatife of an orator, among feveral other encomiums which, he there gives to Craffus, lays of him, “ Craffus al¬ ways excelled every other perfon, but that day he ex¬ celled himfelf.” He means as an orator. But elfe- where he applies the- fame thought to Ctefar, upon another account; and with fome addition to it. “You had (fayshe) before conquered all other conquerors by your equity and clemency, but to-day you have con¬ quered yourfclt; you feem to have vnnquiftied even vidory herfelf, therefore you alone are truly invin¬ cible.” This thought, with a little variation of the 3 L z • phrafe, ftyle. 452 - ORA ^Elocution.phrafe, has fincc appeared in feveral later writers; and it is now grown common to fay of a perfon, who ex¬ cels in any way, upon his doing better than he did before, that he has outdone himfelf. The like has happened to another thought, which, with a little al¬ teration, has been varioufly applied. It was faid by Varro, 'That if the Mufes were t9 talk Latin, they, would talk like-P/autus. The younger Pliny, apply¬ ing this compliment to a friend of his, fays, His let¬ ters are fo finely written, that you would think the Mu¬ fes themfelves talked Latin. And Cicero tells us, It was faid of Xenophon, that the Mufes themfelves feem- ed to /peak Greek with his voice. And elfewhere, that Philofophers fay, if Jupiter fpeaks Greek, he muf /peak like Plato. The thought is much the fame in all thefe initances, and has been fince revived by fume 105 modern writers. The lan- H. We (hall now confider the language proper for fhe^middle ^yle. And in general it may be obferved, that as the proper fubjetts of it are things of weight and importance, though not of that exalted nature as wholly to captivate the mind and divert it from attending to the diction ; fo all the ornaments of fpeech, and beauties of eloquence, have place here. And firft with regard to elegance, ic is plain that a different choice of words makes a very great difference in the ityle, where the fenfe is the fame. Sometimes one fingle word adds a grace and weight to an ex- preffion, which, if removed, the fenfe becomes flat and lifelefs. Now fuch words as are moft full and exprefiive fuit belt with his eharafter. Epithets alfo, which are proper and well chofen, ferve very much to beautify and enliven it, as they enlarge the ideas of things, and fet them in a fuller light. The moft accurate eompofition, in all the parts of it, has place here. Periods, the moft beautiful and harmonious, of a due length, and wrought up with the moft exadf order, juft cadency, eafy and fnflooth connexion of the words, and flowing numbers, are the genuine ornaments, which greatly contribute to form this character. But the principal diftinftion ef ftyle arifes from tropes and figures. By thefe it is chiefly animated and raifed to its different degrees or characters, as it receives a leffer or greater number of them ; and thofe either more mild, or ftrong and powerful. As to tropes, thofe which afford the moft lively and pleafing ideas, especially metaphors, fuit the middle character. It is a pretty remark, which has been made by fome critics upon two verfes of Virgil; one mi his Eclogues, and the other in his Georgies. The former of thefe works is for the moft part written in the low ftyle,, as the language of fhepherds ought to be ; but the latter in the middle ftyle, fuitable to the nature of the fubjedt, and the perfons for whom it was defigned, the greateft men in Home not think- isg it below them to entertain themfelves with rural affairs. Now in the Eclogue, as fome copies read the verfe, the fhepherd, complaining of the barrennefs of his land, fays, Infelix lolium etferiles nafeuntur avena. In Englifh thus: ’ 1 Wild oats and darnel grow inftead of corn. TORY, Partlll, But in the Georgic, where the fame fenfe is intend-Elocution. ed, inftead of the proper word nafeuntur, grow, the y—--* author fubftitutes a metaphor, dominantur, command, and fays, Injeliy. lolium et feriles dominantur aven and the feveral motions of the bodyt in fpeakingy to the fubjeB mat¬ ter of the difcourfe. The bell judges among the ancients have reprefent- ed this as the principal part of an orator’s province, from whence he is chiefly to expeft fuccefs in the art of perfuafion. When Cicero, in the perfon of Craffus, has largely and elegantly difcourfed upon all the other parts of oratory, coming at laft to fpeak of this, he fays : “ All the former have their effedl as they are pronounced. It is the a£lion alone that governs in fpeaking ; without which the belt orator is of no va- . t lue, and is often defeated by one in other refpedts much his inferior.” And he lets us know, that De- ;Tnofthenes was of the fame opinion, wh®, when he was afked what was the principal thing in oratory, re¬ plied, Adlion j and being afked again a fecond and a third time, what was next confiderable, he ftill made the fame anfwer. By which he feemed to intimate, that he thought the whole art did in a manner confift in it. And indeed, if he had not judged this highly neceffary for an orator, he would fcarce have taken fo much pains in corredfing thofe natural defedts, under which he laboured at firft, in order to acquire it. For he had both a weak voice, and likewife an impedi¬ ment in his fpeech, fo that he could not pronounce di- ftindtly fome particular letters. The former of which defedls he conquered, partly by fpeaking as loud as he could upon the fliore, when the fea roared and was boifterous; and partly, by pronouncing long periods as he walked up hill; both of which methods contri¬ buted to the ftrengthening of his voice. And he faund means to render his pronunciation mare clear and ar¬ ticulate, by the help of fome little flones put under his tongue. Nor was he lefs careful in endeavouring to gain the habit of a becoming and decent gefture; for which purpofe he ufed to pronounce his difeourfes alone before a large glafs. And becaufe he had got an ill cuftom of drawing up his fhoulders when he fpoke ; to amend that, he ufed to place them under a fvvord, which hung over him with the point down¬ ward. Such pains did this prince of the Grecian ora¬ tors take to remove thofe difficulties, which would have tion. Part IV. O R A Pn nuncia- have been r«iffi;lent to dlfcoura^e an inferior and kls afpiring genius. And to how great it perfection he ^ arrived in his aftion, under all thefe difadvantages, by .his indefatigable diligence and application, is evident from the confefiion of his great adversary and rival in oratory, ALfchiues. Who, when he could not bear the diferace of being worlled by Demofthenes in the caufeof Ctefiphon, retired to Rhodes. And being defired by the inhabitants to recite to them his own oration upon that occafion, which accordingly he did; the next day they requefted of him to let them hear that of Demolthenes ; which having pronounced in a moft graceful manner, to the admiration of all woo were prefent, “ How much more (fays he) would you have wondered if you had heard him fpeak it himfelt! Bt which he plainly gave Demolthenes the preference in that refpeft. We might add to thefe authorities the judgment of Quintilian, who fays, that “ it is not ef fo much moment what our compofitions are, as how they are pronounced; fince it is the manner of the delivery, by which the audience is moved.” And therefore he ventures to alfert, that “ an indifferent difeourfe, affifted by a lively and graceful aftion, will have greater efficacy than the finelt harangue wmch wants that advantage.” The truth of this fentiment of the ancients con¬ cerning the power and efficacy of pronunciation, might be proved from many inftances; but one or two may here fuffice. Hortenfius, a cotemporary with Cicero, and while living next to him in reputation as orator, was highly applauded for his aftion. But his orations after his death, as Quintilian tells us (lor we have none of them now remaining), did not appear anfwerable to his charadter ; from whence he jultly concludes, there muft have been Something pleafing when he fpoke by which he gained his charatfer, which was loll in reading them. But perhaps there is fcarce a more confiderable inftance of this than in Cicero himfelf. After the death of Pompey, when Ciefar had got the government into his own hands, many of his acquaintance interceded with him in be¬ half of their relations and friends, who had been of the contrary party in the late wars. Among ^others, Cicero folicited fcr his friend Ligarius; which Tubero underltanding, who owed Ligarius a grudge, ..e op* pofed it, and undertook to reprefent him to Cselar as unworthy ol his mercy. Caelar himfelf was prejudiced againll Ligarius ; and therefore, when the caufe v/as to come before him, he faid, “ We may venture to hear Cicero difplay his eloquence; for I know the per- fon he pleads for to be an ill man, and my enemy. But, however, in the courfe of his oration, Cicero fo worked upon his paffions, that by the frequent altera¬ tion of his countenance, the emotions of his mind were very confpicuous. And when he came to touch upon the battle of Pharfalia, which had given Caelar the empire of the world, he reprefented it in that moving and lively manner, that Csefar could no longer con¬ tain himfelf, but was thrown into fuch a fit of ihiver- ing, that he dropped the- papers which he held in his hand. This was the more remarkable, becaufe Caefar was himfelf one of the greatell orators of that age, knew all the arts of addrefs, and avenues to the paf¬ fions, and confequently was better prepared to guard againlt them. But neither his (kill, nor refolution of TORY. 461 mind, was of fufficient force againll the power of ora- tory ; but the conqueror of the world became a con- quell to the charms of Cicero’s eloquence ; io that, contrary to his intention, he gave into his plea, and pardoned Ligarius. Now that oration is Hill extant, and appears exceedingly well calculated to touch tuc fa ft and tender paffions and fprtngs of the foul; but we believe it can fcarce be difeernibie to any in reading it, how it fhould have had fo furprifing an efteil; which mull therefore have been chiefly owing to the wonder¬ ful addrefs and condudd of the fpeaker. _ _ The more natural the pronunciation is, it will or » confequence be the more moving, iinee the perfection of art confifts in its nearell refembiance to nature. And therefore it is not without good reafon, that the ancients make it one qualification of an orator, that he be a good man ; becaufe a perfon of this charafter will make the caufe he efpoules his own, and the more ten- fihly he is touched with it himfelf, his a£uon wili be the more natural, and by that means the more eafily affeft others in the fame manner. Cicero, fpeaking upon this i'ubjeA, fays, “ It is certain that truth (by which he means nature) in every thing excels imita¬ tion ; but if that was Fufficient of itfell in a£tion, we fhould have no occafion lor art.” In his opinion therefore (and who was ever a better judge), ait, m this cafe as well as in many others, it well managed, will affift and improve nature. But that is not all; for fometimes we find the force of it fo great and powers ful, that, where it is wholly counterfeit, it will loi the time work the fame effedl as if it was founded in truth. This is well known to thofe who have been converlant with the reorefentations ot the theatre. In tragedies^ though we'are fenfible that every thing we fee and hear is feigned and counterfeit, yet fuch is the power of a&ion, that we are oftentimes affeAed by it in the fame manner as if they were all realities. Anger and refentment at the appearance of cruelty, concern and folicitude for dillreffed virtue, rife in our brealls; and tears are extorted from us for opprelfed innocence : though at the fame time, perhaps, we are ready to lauAr at ourfelves for being thus decoyed. If art then has3fo great an influence upon us, when fupported on¬ ly by fancy and imagination, hoiv poweriui mult be the elfeA of a juil and lively reprefentation ol what we know to be true and real ? . , How agreeable it is both to nature and reaton, that a warmth of expreffion and vehemency ©! motion fhpuld rife in proportion to the importance of the fubjeA and concern of the fpeaker,, will further ap¬ pear, by looking back a little into the more early and Ample ages of the world. For the higher we go, the more we ffiall find of both. We {hall give the obferva- tion of a very great man upon this head, in his own Dial, of words. “ The Romans (fays he) had a very great Eloquence talent this way, and the Greeks a greater. 1 he ea.P1?*' Hern nations excelled in it, and particularly the He¬ brews. Nothing can equal the {Length and vivacity of the figures they employed in their difeourfe ; and the very aAions they ufed to exprefs their fentiments; fuch as putting allies on their heads, and tearing their garments, and covering themfelves with fackcloth un¬ der any deep diltrefs and forrow of mind. I do not fpeak of what the prophets did to give a more lively reprefentation of the things they foretold, becaule 1 . fuch 4 4^2 *r°nuncia- fuch figurative aaians were the effed of divine infpi. i _ ' . ration. But even in other cafes we find thofe people underftood much better than we do how to exprefs their grief, and fear, and other paffions. And hence, no doubt, arofe thofe furprifing effeds of eloquence, which we never experience now.” Thus far this ex¬ cellent writer. And what he fays here with refped ORATORY. Part IV. tin? one lenience from anotker : likewife when to Pronunci,.' raife or fink their voice, or give it a proper inflec- tion ; to be flower or fafter, more vehement or fedate tionf to the adions of the eaftern nations, w’as m a good meafure cuftomary amopg the Greeks and Romans; if not entirely of the fame kind, yet perhaps as vehe¬ ment and expreflive. i hey did not think language of itfelf fufficient to exprefs the height of their paffions, unlefs enforced by uncommon motions and geftures. 1 bus, when Achilles had driven the Trojans into their city with the greateft precipitation and terror, and only Hedor ventured to tarry without the gates to engage him ; Homer reprefents both king Priam and his queen under the higheft confternation for the danger of their fon. And therefore, in order to pre¬ vail with him to come into the city, and nat fight «ith Achilles, they not only intreat him from the walls in the moft tender and moving language imaginable; but he teais off his grey locks with his hands; and ffie in a flood of tears expofes her breafts, and adjures him by thofe paps which fuckled him, to comply with their requeft. The poet knew very well, that no words of themfelves could reprefent thofe agonies of mind he endeavoured to convey, unlefs heightened by the idea of fuch adions as were expreffive of the deepeft for- row. And indeed this was anciently efleemed fo re- quiiite in an orator, that in matters of importance he was fcarce thought to be in earneff who wanted it. In one of Cicero s orations, he does not flick to argue in that manner with his adverfary. Would you talk thus (fays he) if you was ferious ? Would you, who are wont to difplay your eloquence fo warmly in the danger of others, ad fo coldly in your own ? Where is that concern, that ardour, which uled to extort pity even from children? Here is no emotion either of mind or body ; neither the forehead ftruck, nor the thigh, nor fo much as a ftamp of the foot. Therefore, you have been fo far from inflaming our minds, that you have fcarce kept us awake.” As adion therefore was judged fo neceffary a qua¬ lification in an orator among the ancients, fo they made ufe of feveral methods and expedients for the better attaining it. The principal of which we fhall briefly mention. Decency of pronunciation is an habit. And as all habits are gained by time, fo the focner they are learned, they are generally acquired with greater eafe. For while perfons are young, they are not only more flexible, and capable of any particular bent, but they are likewife free from the trouble of encountering and iubdmng contrary habits, which doubles the labour, and increafes the difficulty of attaining any laudable quality. ‘Quintilian was very fenfible of this in the cafe here before us ; and therefore, in order to have perfons trained up to it, he begins with them in their childhood, and defeends fo low as even to give direc¬ tions how they fhould be taught to pronounce w hen they firfi learn to read. And he advifes, that they fliould then be inftruaed where to fufpend their voice, and make the proper paufes, both in diftinguifhing the feveral parts of the fame fentence, and in fepara- as the nature ol the things may require; and that the tone of their voice be always manly and grave, but at the fame time mixed with an agreeable fweetnefs. Thefe things may perhaps appear in themfelves fmallj but if duly attended to, they will be found of confi- derable fervice to bring us to a juft and proper pro¬ nunciation. For in every thing that is to be attained by practice, it is a great advantage to fet out right at ^ The ancients likewife had perfons whom they called pkonafei, whofe proper buiinefs it was to teach them how to regulate and manage their voice ; and others, who inftruded them in the whole art of pronunciation, both as to their voice and geftures. Thefe latter were generaliy taken fiom the theatre, being fome eminent experienced adtors. bo Quintilian, treating of the province of thefe perfons, fays, “ The comedian ought to teach them how to relate faffs, with what autho¬ rity to advife, with what vehemence to exprefs anoer, and with what foftnefs eompaffion.” And fpeakm^ of geftures, he fays, “He fhould admoniffi them to raife their countenance, not diftort their lips, or ilretch their mouths.” With feveral other direffions of the like kind. And we are told concerning the emperor M. Antoninus, ufually called the philofopher, that firft mafias were Euphoria the grammarian, and Ge- minus the comedian. But though they made ufe of affors to inftruift their youth in forming their fpeech and geftures, yet the aff ion of an orator was much different from that of the theatre. Cicero very plainly repiefents this di- flinffion, in the words of Craffus, when, fpeaking of orators, he fays, “.The motions of the body ought to be fuked to the exprtffions, not in a theatrical way, mimicking the words by particular gefticulations, but in a manner expreffive of the general fenfe, with a fe¬ date and manly infleffion of the fides; not taken from the ftage and affors, but from the exercife of arms and the paleftra.” And Quintilian fays to the fame pur- pofe, “ Every geflure and motion of the comedians is not to be imitated, nor to the fame^degree.” They thought the affion of the theatre too light and extra¬ vagant for the imitation of an orator ; and therefore, though they employed affors to inform young perfons in the firft rudiments, yet they were afterwards feot to the paleftra, or fchools defigned on purpofe fb teach them a decent and graceful management of their bodies* And fuch fchools, as Quintilian informs us, were in ufe both among the Greeks and Romans : Juft as of later ages children learn to dance, in fome meafure with the fame intention. Leing thus far prepared, they were afterwards fent to the Ichoois of the rhetoricians. And here, as their bufmefs was to cultivate their ftyle, and g’ain the whole art of eloquence ; fo particularly to acquire a juft and accurate pronunciation by thofe exercifes, in which for that end they were eonftantly employed. And as the Greeks were moft celebrated for their/kill in all the polite arts, and efpecially oratory ; the Ro¬ man gentry and nobility generally fent their fons abroad, and placed them under the tuition of fome Grecian mafter, to inftruff them in the art of fpeak- Part IV. ORA Frommru- Irrg, atrd by that mwn^to fir them for the fervice of tion. the;r country", either in the courts of judicature or the fcnate. Thus Cicero was fent to Rhodes, to ftudy un¬ der the famous Molo* and Brutus under Pammenes ; Csefar was going to the fame pkce when taken by prates; and Auguftus afterwards ftudied thereunder Apollodoms. Nor, after all this pains and incluftry, did they yet think therofelves fefficiently qualified to take upon them the charafter of orators. But it was their con- ftjnt cuftom to get together fome of their friends and acquaintance who were proper judges of fuck perform¬ ances, and declaim before them in private. The bufi- nefs of thefe perfons was to make obfervations both on their language and pronunciation. And they were allowed the greeted freedom to take notice of any thing they thought amifs, either as to inaccuracy of method, impropriety of Ityle, or indecency of their voice or actions. This gave them an opportunity to cor reel any fuch defeds at firft, before they became habitual. What effedls might not juftly be expefted from fuch an inflitution ? Perfons trained up in this manner, with all thofe advantages, joined to a good natural genius, could not fail of making very com¬ plete orators. Though even after they came to appear in public, they did not lay afide the cuftom of de¬ claiming. For Quintilian tells us. that C. Carlo ufed to praclife it daily in his tent. And Auguftus is report¬ ed to have continued it during the war of Mutina againft M. Antony. Nor is it to be fuppofed, that fo conftant an attendance to this praftice was only fer- viceable to them in their public performances ; but it mu ft neceflarily affeft their whole conduft, give them a freedom of fpeeeh, eafineis of addrefs and behaviour, and render them in all refpedls fine gentlemen, as well as excellent orators. And from hence perhaps we may fee lefs reafon to wonder at the furpriling effedls of fome of their difeourfes, when we conlider what pains they took to arrive at thofe abilities. Having thus far treated on pronunciation in gene¬ ral, we fiiall now proceed to confider the parts ol it feparately ; which are volte w\&gejlurc. Chap. II. Of the Voice, Voice is one kind of founds. Now the influence of founds, either to raife or allay our paflions, is evi¬ dent from mufic. And certainly the harmony of a fine difeourfe, well and gracefully pronounced, is as ca- fluenccs the to move us, if not in a way fo violent and eefta- eithCTby t‘c» yet 1)01 ,e^s powerfub ar>(I more agreeable to our railing or rational faculties. As the hufinefs of this chapter is a'laying to offer forae confuleratious for the juft and decent management of the voice, it may not be improper in the firft place toohferve in general what nature docs when free and uneonftrained. As perfons are different¬ ly affe&ed when they fpeak; fo they naturally alter the tone of their voice,-^though they do not attend to it. It rifts, finks, and has various inffeOioir* given it, according to the prefent ftate and difpofition of the mind. When the mind is calm and fedate, the voice moderate and even; when the former is eejedled with forrow, the latter is languid ; anti when that is isflamed by palficn, this is raifed and elevated. It is tli* oratot’s bufinefs, therefore, to follow nature, and 119 Voice, a kind of found ■which al¬ ways in- T 0 R Y. 4% to endeavour that the tone of his voice appear nata-Pronuncia- ral and unaffected. And for this end, he muft take care to fuit it to the nature of the fubjedt; but ftill fo as to be always grave and decent, Some perfons con¬ tinue a difeourfe in fuclv a low and drawling manner,* that they can fcarce be heard by their audience. O- thers again hurry on in fo loud and boifterous a man¬ ner as if they, imagined their hearers were deaf. But all the mufic and harmony of fpeech lies in the proper temperament of the voice between thefe extremes. In order to fet this matter in a juft light, it will be ne- ceffary to confider the principal affeclions or proper¬ ties of the voice, and how they are to be regulated by an' orator. Now thefe may all be referred either to quantity or quality. The quantity of the voice confifts in its highnefs or lozunefs, fiviftnefs or Jlo-wnefs, and the intermediate de¬ grees between them. Every perfon who fpeaks in public, ftiould endea¬ vour, if he can, to fill the place where he fpeaks. But ftill he ought to be careful not to exceed the natural key of his voice. If he does, it will neither be foft nor agreeable ; but either harfh and rough, or too fhrill and fqueaking. Befides, he will not be able to give every fyllable its full and diftinft found ; which will render what he fays obfeure, and difficult to b* underftood. He fhould therefore take care to keep his voice within reach, fo as to have it under manage¬ ment, that he may raife or fink it, or give it any in¬ flexion he thinks proper : Which it will not be iif his power to do, if he put a force upon it, and ftrain it beyond its natural tone. The like caution is to be ufed againft the contrary extreme, that the voice be not dropped, and fuffered. to fink too low. This will give the fpeaker pain in- raifmg it again to its proper pitch, and be no lefs of- feniiveto the hearers. For though the mufic of fpeech> confifts in the variations of the voice, yet they muft- be gradual to render them pleafant. Such fuddeaand great changes at once are rather to be elteemed chafms in fpeaking, than variations. Befides, as they often prevent the hearers from taking in the fenfe of what is faid, it gives them no fm?,H uneafinefs that they are obliged to ftretch their attention. Many per- fons are too apt to be guilty of this, efpecially at the end of a fentence, by dropping the laft word ; which.' ought in a particular manner to beexpreffed diftinXly, becaufe the meaning of the whole fentence often de¬ pends upon it. The medium between thefe two is a .moderate and even voice. But this is not the fame in aft; that which is moderate in one would be high in another. Every, perfon therefore muft regulate it by the natural key of his own voice. A calm and fedate voice is gene¬ rally heft ; as a moderate found is moll pleaiing to the ear, if it be clear and diftinX. But this equality of the voice muft alfo be accompanied wich a variety,, otherwife there can be no harmony; lince all harmony confifts in variety. Nothing is lefs pieafing than a dif¬ eourfe pronounced throughout in one continued tone of the voice, without any change or alteration. Be¬ fides, a variation of the voice is an eafe to the fpeaker; as the body is relieved by fhifting its pofture. The equality therefore we are here fpeaking of admits a variety of-inflexions and changes within the fame 464 ORATORY. Part.1V. Pronuncla- pitch. And when that is alter'ed, the gradations, t*cl1' , whether higher or lower, fhould be fo gentle and re- gular as to preferve a due proportion of the parts and harmony of the whole ; vrhich cannot be done, when the voice is fuddenly varied with too great a diftinc- tion. And therefore it fhould move from one key to another, fo as rather to glide like a gentle ftream, than pour down like a rapid tomtit, as an ingenious writer has well expreffed it. An even voice is beft fit¬ ted to keep the mind to clofe attention. And there¬ fore, in fubjecfs defigned only for inftruftion, without any addrefs to the pafiions, there is little room for a variety of voice. For the voice ought to agree with the ftyle ; and as upon firch fubjcds this fhould be equal, moderate, and fmooth, fo fhould the other. E* very thing, as we fay, is beautiful in its feafon ; and there is a certain propriety in things which ought al¬ ways to be rtgarded. And therefore, an affefted va¬ riety, ill placed, is as difagreeable to a judicious au¬ dience, as the want of it, where the fubjeft requires it. We may find feme perfons, in pronouncing a grave and plain difeotirfe, affecl as many different tones, changes, and variations of their voice, as if they were adling a comedy ; which is doubtlefs a very great impropriety. But the orator’s province is not barely to apply to the mind, but likewife to the paffions ; which require a great variety of the voice, high or low, vehement or languid, according to the nature of the pafiions he de- figns to affedf. So that for an orator always to ufe the fame tone or degree of his voice, and expert to anfwer all his views by it, would be much the fame thing as if a phyfician fhould propofe to cure all di-. ftempers by one medicine. From hence it is evi¬ dent, that although various inflertions and tones of the voice are requifite to make it harmonious and plea- fing to the ear ; yet the degree of it fhould differ ac¬ cording to the nature of the fubjert and defign of the fpeaker. And, as a perfert monotony is al- , ways unpleafant, fo it can never be neceffary in any difeourfe. J The next property of the voice above-mentionei was fiu'iftnejs. 'I hat fome exprefiions ought to b pronounced fafter and fwifter than others, is very ma nifeft. Gay and fprightly ideas fhould not only b expreffed louder, but alfo fafter, than’fuch as are fa and melancholy. And when we prefs an adverfary th voice fhould be brifk and quick. Bfit to hurry on i a precipitant manner without paufing, till ftopt fo want of breath, is certainly a very great fault. Thi tieftroys not only the neceffary diftinrtion between fen tence and fentence, but likewife between the fevera words of the fame fentence ; nay, and often occafion usto exprefs our words by halves, while one is throw! o iait upon another, that we are not able to giv each us full and juft found. By this means all th grace of fpeaking is loft, and in a great meafure th. advantage of hearing. For when the ears of th earers cannot keep pace with the volubility of th Kw "il1 te K"1' H-e better fo . 0 a!?*. Eehdca, by not commanding his voice ^difttlf' ,he P-fesand pci rf a'fentenep* d f"” •« kp in the midd! mted ind ; rf° d"ides what b' Conti mttft’necefliiiy’de'flrey ^he1! r' fePta,alcdf; "1,id jqo oj2 ^ ^ ^en^e> an^ confound hi difeourfe. Young perfons are very liable to this, efpe- Pronuncia- cially at firft fating out. And it often arifes from tion‘ * , diffidence. They are jealous of their performances, and the fuccefs they may have in fpeaking, which gives them a pain till it is over; and this puts them into a hurry of mind, which incapacitates them from governing their voice, and keeping it under that due regulation which perhaps they propofed to them- fclves before they began to fpeak. And the greater degree luch perfons have of a native and ingenuous modefty, accompanied with a laudable ambition to excel, they are commonly more expofed to this. For while on the one hand they are fired with an ardent defire to recommend themfeives, and on the other are fear.ul of the event, this dubious ftate of mind is very* apt to throw them off their guard, and run them into this excefs. From which we may fee the great advan¬ tage of having the voice well formed betimes; for when once it is become habitual to fpeak with juftnefs and propriety, perfons readily prartife it without much at¬ tention or concern. And as a precipitant and hafty pronunciation is culpable, fo likewife on the other hand, it is a fault to fpeak too flow. This feems to argue a heavinefs in' the fpeaker. And as he appears cool himfelf, he d*an neveti expert to warm his hearers, and excite their’af- fertions. When not only every word, but every fyl- lable is drawn out to too great a length, the ideas do not come fall enough to keep up the attention without much uneafinefs. For till the fenfe is completed, the mind is in fufpenfe; and, if it be held long in that fituation, it will of courfe flag and grow tired. -In¬ deed, in fome cafes, it is requifite the pronunciation fhould be flower than in others ; as in reprefenting things great and difficult ; or in expreffing fome par¬ ticular paffions, as admiration or grief. But the ex¬ treme we are now fpeaking of, is a flownefs equally continued through a whole difeourfe, which mull ne- ceflarily render it flat and lifelefs. Now, to avoid either of the two extremes laft men¬ tioned, the voice ought to he fedate and diftinrt. And in order to render it diftinrt, it is neceflary, not only that each word and fyllable fhould have its juft and full found, both as to time and accent; but like¬ wife that every fentence, and part of a fentence, ffiould be feparated by its proper paufc and interval. This is more eafy to be done in reading, from the af- fiftance of the points; but it is no lefs to be attended to in fpeaking, if we would pronounce in a diftinrt and graceful manner. For every one fhould fpeak in the fame manner as he ought to read, if he could ar¬ rive at that exaftnefs. Now the common rule given in paufing is, that we flop our voice at a comma till we can tell one, at a femicolon two, at a colon three, and at a full period four. And as thefe points are either accommodated to the feveral parts of the fame fentence, as the firft three ; or different fentences, as the laft ; this occafions the different length of the paufe, by which either the dependence of what pre¬ cedes upon that which follows, or its diftinrtion from it, is reprefented. And therefore, in the firft three flops, the voice is rather to be fufpendtd in different degrees or meafures of time, than entirely dropt, to fhow that the fenfe is not yet completed. But between fentence and fentence we refpire, and begin anew. So that Part IV. 0 R A Pronuncia- that in lot?g periods, the voice fhould be favoured by r °n- beginning low and fedately, that it raay hold to the without refpiration ; or if it will not, the breath ought to be recovered without finking the voice. For if once the voice drop for want of breath before the period be finiihed, not only the beauty, but likewife the fenfe of it will be loft. Quintilian lays a great ftrefs upon a due attention to thefe paufes ; and fays, ‘‘Though it may appear not fo eonfiderable in itfelf. Vet all the other virtues of a good pronunciation are deficient without it.” Hitherto we have confidered fuch properties of the voice as rel'pecft quantity, we come now to fpeak of its qualities. And the chief of thefe are Jlrength or nveahiefs, clcurnefs or obfcvrenefs, fulnefs or ftnallnefs, fmoothnefs or roughnefs. Now, one half of thefe is what every one would willingly choofe, as he would wifti to be free from the others. But it is not in our power to give ourfelves what qualities of the voice we pleafe ; but only to make the beft ufe we can of what nature has frcftowed upon us. However, feveral de* fcfts of the voice are capable of being helped by care and proper means ; as, on the other hand, the beft voice may be greatly hurt by ill management and in- difcretion. Temperance is a great prefervative of the voice, and all excefs is highly prejudicial to it. The voice mull neceflarily fuffer, if the organs of fpeech have not their proper tone. And in order to their having this, they muft be kept in a due temperature ; that is, they muft neither be too moift nor too dry. If they abound with fluids, thefe will obftruift the clearnefs of the voice, and render it obfcure and con- . fufed ; and if they are parched with drought, the voice will be harih and rough. Now all excefies, as well as fome bodily indifpofitions, are apt to affeA the or¬ gans one or other of thefe ways. A ftrong voice is very ferviceable to an orator, be- caufe, if it want fome other advantages, he is, how¬ ever, capable to make himfelf heard. And if at any time he is forced to ftrain it, he is in lefs danger of its failing him before he has finifhed his difcourfe. But he who has a weak voice, fhould be very careful not to ftrain it, efpeeially at firft. He ought to begin low, and rife gradually to fuch a pitch as the key of his voice will \’ l] carry him, without being obliged to link again afterwards. Frequent inflections of the voice will likewife be f@me affiftance to him. But efpe* cially he fhould take care to fpeak. deliberately, and eafe Iris voice, by allowing due time for refpiration at all the proper paufes. It is an extreme much kfs in¬ convenient for fuch a perfon rather to fpeak too flow, than too faff. But this defeCt of a weak voice is forrvetimes capable of being helped by the ufe of pro¬ per methods ; as is evident from the inftance of He- mofthenes, before-mentioned. A voice is faid to be dear, when the organs of foeech are fuited to give every fingle letter, and all the combinations of them in fyllables and words, their proper and diftinbf found. Such a voice is very oleafing and agreeable to the hearers ; and no lefs an happinefs to the fpeaker, as it faves him a great ex¬ pence of fpirits. For a moderate voice, if dear, will he as diftm&ly heard, as one much louder, if thick and obfcure. Which is a great advantage to the fpeaker, becaufe he can better keep .his voice under Vol.XUI. Part II. O R Y. 465 command, and modulate it at pleafure, as the feveral Prommaa- parts and circumflances of his difcourfe raay require. ‘10n'' . On the contrary, an obfcure and confufed voice is not always occafioned from a deficiency in the organ ; but many times is the effect of cuftom and a bad habit. Some perfons, either from want of due care in their education at firft, or from inadvertency and ne¬ gligence afterwards, ran into a very irregular and confafed manner of expreffing their words ; either by mifplacing the accent, confounding the found of the letters, or huddling the fyllables one upon another, fa as to render what they fay often unintelligible. In¬ deed, fometimes this arifes from a natural defeft, as in the cafe of Demofthenes ; who found a method to re&ifiy that, as well as the weakenefs of his voice. But in faults of this kind, which proceed from habit, doubtlefs the moft likely way to mend them is to fpe.ik deliberately. A full voice is not the fame as a ftrong or a loud voice. It fills the ear, but it is often not plea- fant. And therefore to render it fo, as well as audible, it ftiould be frequently varied. However, this feems better fuited to the chara&er of an orator, than a fmall and fhrill voice j becaufe it has fomething in it more grave and manly. And thofe who have the misfortune of a very fmall voice, fliould be cautious of raifing it to too high a pitch, efpecially at once; be¬ caufe the fudden compreffure of the organ is apt t© occafion a fqueaking and very difagreeable found. A foft and fmooth voice is of all the moft mufieal, efpecially if it be flexible. And on the contrary., nothing is lefs harmonious than a voice that ia harfh and rough. For the one grates as difagree- ably upon the ear, as the other gives it pleafure and delight. From the coiifideration of thefe feveral properties of the voice, we may conclude that to be the beft, and ficteft for an orator, which is moderate, diftinet, firm, clear, and finooth, and withal eafily flexible to the feveral degrees and variations of found which every part of the difcourfe may require. Chap. III. OfGcflure. By this is meant, a fuitable conformity of the mo- Gefture is tions of the countenance, and feveral parts of the body :he confor- in fpeaking, to the fubjedt-matter of the difcourfe. miry of the The word gejlure is here ufed in a larger fenfe than is^01'0'13 ordinarily done in common language. For we rarely make ufe of that word to denote the motions of thetothe na- countenance, or any parts of it; but as thefe makemre of tha a confiderable part of our prefent fubjedt, they muftb^courk* here be comprehended under this term. It is not agreed among the learned, whether voice or gefture has the greater influence upon us. But as the latter affedfts us by the eye, as the farmer does by the ear, geflure in the nature of it teems to have this advantage, that it conveys the impreffion more fptedi- ly to the mind 5 for the fight is the quiekeft of all our fenfes. Nor is its influence lefs upon our palfions ; nay, in fome inftances it appears to ad more power¬ fully. A call of the eye fhall exprefs defire in as rea¬ ving a manner as the fofteft language ; and a diffe¬ rent motion of it, refentment. To wring the hands, tear the hair, or itrike the breaft, are all itrong indica- 3 N tions 466 Pror.unc’a- tlons of for.row. And lie who claps his hand to His tion. fword, throws us into a greater panic than one who on]y threatens to kill us. Nor is it in fome refpefts lefs various and extenfive than language. Cicero tells us, he often diverted himfelf hy trying this with Rofcius the comedian ; who could exprefs a fentence as many ways by his geftures, as he himfelf by words. And fome dramas, called pantomimes, have been carried on wholly by mutes, who have performed every part by geftures only, without words, in a way very intelligent, as well as entertaining to the fpeftators. Well therefore might Cicero call a8ion (or gefture) the language of the body, fince it is capable in fo lively a manner to convey both our ideas and paffions. But with refpeft to oratory, gefture may very properly be called the fecond part of pronunciation; in which, as the voice fhould be fuited to the impreffions it receives from the mind, fo the feveral motions of the body ought to be accommodated to the various tones and inflexions of the voice. When the voice is even and moderate, little gefture is required ; and nothing is more unna¬ tural than violent motion, in difcourfing upon ordi¬ nary and familiar fubjeXs. The motions of the body fhould rife therefore in proportion to the vehemence and energy of the expreffion, as the natural and genuine efteX of it. But as gefture is very different and various as to the manner of it, which depends upon the decent con- duX of feveral parts of the body ; it will not be amifs to coniider more particularly the proper manage¬ ment of each of thofe parts. Now all gefture is either natural, or from imitation. By natural gefture we mean fuch aXions and motions of the body, as na¬ turally accompany our words,' as thefe do the im- preffions of our minds. And thefe either refpeX the whole body, or fome particular part of it. But be¬ fore we enter upon this, give us leave juft to obferve, that it has been cuftomary in all ages and countries, in making a fet difeourfe before an affembly, to do it Handing. Thus we read, that Abraham flood up, andfpake unto the children of Heth And it feems as if he fat down, when he had ended his fpeech ; be- caufe, immediately after the account of their anfwer, it is faid again, that Abraham flood up and bo are fet to the fame pitch, the firings of the one being touched, produce in the other the like found. Thii common fympathy in the human frame fhows how ne- ceflary it is that an orator fhould not only in general be well acquainted with the rules of pronunciation, but likewife know how t and the preventing a monotony. And the different pronunciation of thefe words will alio leqmre a peculiar geffure. n- fentences, regard fhould be had to their length, and the number of their parts, in order to di- Itinguiih them by proper paufes. The frame and ftruc tllre or the nenrid ill . i ^ , . . fir- r ^ vvcic, cueexea nim- , in w'iat tallows, not tofhow a greatnefs of mind equal to his caufe. The beginning of the third member, car¬ rying a refleftion in it, was fpoke with a different tone of the voice, this new form of the court terrifies my eyes ; and the other part of it more loud and di- ftindily, which cannot difeern the ancient manner of thefo¬ rum, and former cujlom of trials. And the laff: mem- ...re of the periS ough likewffc to be co„fi/c“red ,W he”” “"Vr" ^ And fhe left the voice may be fo managed as to givet the moft / *^5“ T' '**??** ^ W' « *' u:ufical accent. Unlefs there be fnmpfr.^ '-,1 r r ^ furrounded with its ufual attendants. And it muff be the contrary, it Ihould en^loude^than^t^e^ins^Aml f“PPofed> ,hi,t faying this, he tail his this difference of tone between the end of The fn ^ d P ^he1afrcrnbly» and viewed the foldiers whom fentence and the beginning'of^he next^ not^nlv'hfdtr f omPe,T ^ plaCed there’ which the expref- to diffmguifh the fenfe, but adds to the harmnnv Pf 10n ^lli, more grave and folemn. If this was the man- the voice. And that the laft fvllahlcs r 15 °P ner °P the. ancient orators, and they were fo exaft and of a fentence accurate in expreffing their periods, and the fcveral narts of thpm oo u y i• .1 . , . ^ or a lenience might become more audible and diftind, was doubtlefs r r W7 f6 anC1Cnt rhetoriomns diflike ffiort feet at the end of a period. In an antitbefis, or a fen- tence confiftmg of oppofite parts, one contrary mull b louder than the other. As, “ He is gone, but by a gainful remove, from painful labour to quiet reff ; from nqmet defires to happy contentment : from forrow to joy j and from tranfitory time to immortality.” In a e‘max or gradation, the voice fhould rife with it. So, sere is no enjoyment of property without government • ™ governme”. „ magiL.e ; i magiftra.c nteafes ' T/ 7 ° ^ wlm ^ " rem f ^ d fo ln other gradations of a diffe- / °amfA ,AS’ ‘ St,nCe CRncord was friendlhip And f’a,„ y”" W-CA -wo, if flJfZt tmJl Ttof Rre w fc,-ra °ther liS"ra'i'e -Pt^ton, ment of X a. Partlcular conformation and manage- Xs L'l .TV but ^ we prefume, with toL r aiiu ine icveral parts of them, as we have reafon to believe they were, it muff have given a very great force, as weH as beau¬ ty, to their pronunciation. J11* ^hat the paffions have each of them both a different voice and adion, is evident from hence; that we know in what manner a perfon is affeded, by the tone of his voice, though we do not underffand the jenfe of what he fays, or many times fo much as fee him ; and we can often make the fame judgment from his countenance and geftures. Love and efteem are expreffed in a fmooth and cheerful tone: but anger and lefentment, with a rough, harffr, and interrupted voice ; for when the fpirits are difturbed and ruffled, the organs are moved unequally. Joy raifes and di¬ lates the voice, as forrow finks and contrads it. Ci¬ cero takes notice of a paffage in an oration of Grac¬ chus, wherein he bewails the death of his brother, who was killed by Scipio, which in his time waS thought very moving : “ Unhappy man (fays he), whi¬ ther Jhall I betake myfelf ? where Jhall 1 go ? Into the capitol. that flows with my brother's blood. Shall I go home? and hrhnl/J -v,.. ...if, ; „ ,/ • 1 1 6° icent ot the voice ; but thefe we nref,mV , ‘V r * 1 betake myfelf? where Jhall 1 go ? Into the others we (hail have occafion to name prefentlv whX fEpit°J *? thatf°™* ^ith my brother's blood. Shall I go XhTreft "p p"lr‘on8>.m»y be fufficiint to guitku" XV’-^ThVl? M ■” °na L " tne relt- But that t may annear 7 a i '/\ V 1 hough Gracchus had a very ill defip-n in Bow neceffary a different inflVS and vw Him Y 3nd bh view was to excite the populace svx SL-ri f'SlH T- woitrKf iFFr— geous ihould be exp relied with pomp and magnificence : 0 furprijing *35 Part IV. Pronuncia- furpri/ing clemency, luirlhy of the hlyhefi pralfe and vreatefl tio”- encomiums, and fit to be perpetuated in lading monuments ! ' This is Cicero’s compliment to Crefar, when he thought it for his purpofe. An.i oftentimes this paf- fion is accompanied with an elevation both of the eyes and hands. On the contrary, contempt finks and pro- trafts the voice. In the difpute between Cicero and Cecilius, which of them fhould aceufe Verres, Cicero puts this contemptuous queftion to him : “ How are you qualified, Cecilius, for fuch an undertaking ? I will not alk, when you ever gave a proof of it ; but when you fo much as attempted it ? Do you confider the difficulty of managing a public caufe ?” with much more to the fame purpofe. Though fuch kind of expreffions require little gefture, yet fometimes a motion of the hand may not be improper, to fignify difdain or averfion. We may fuppofe Cicero to have a&ed thus in his defence of Rabirius. For to (how his affurance of his client’s caufe, having ufed this ex- preffion in a very audible manner, “ I wifh I had it to fay, that Rabirins had with his own hand killed Saturninus, who was an enemy to the Roman ftate,” fome perfons in the crowd began to raife a clamour, juft as of later times biffing has been pra&ifed on the like occafions. Upon which Cicero immediately re¬ plies, “ This noife does not diiturb me, but pleafe me, fince it ftiows, though there are fome weak perfons, yet they are but few.” Then prefently after follows the cxpreffion we refer to: “ Why do not you ceafe your clamour, fince it only difcovers your folly, and the fmallnefs of your number ?” All exclamations ORATORY. 471 should be violent. When we aldrefs to inanimate 'Pronund-a.. things, the voice fhould be higher than when to ani- ^ . mated beings ; and appeals to heaven muft be made in a loftier tone than thofe to men. Thefe few hints for expreffing the principal paffions may, if duly attended to, fuffice to direft our pra&ice in others. Though, after all, it is impoffible to gain a juft and decent pronunciation of voice and gefture merely from rules, without praftice and an imitation of the beft examples. Which ffiows the wifdom of the ancients, in training up their youth to k, by the affiftance of mafters, to form both their fpeech and a&ions. But there is one thing which ought always to be attended to; namely, that perfons fhould well confider their own make and genius, efpecially with refpecl to the paffions. We feldom find, that any a£tor can ex¬ cel in all charadlers ; but if he performs one well, he is deficient in another: And therefore they are com¬ monly fo prudent as to confine themfelves to fuch as beft fuit them. The cafe is the fame in an orator ; who fliould therefore keep within thofe bounds which nature feems to have preferibed for him. Some are better fitted for aftion than others, and moft for fome particular actions rather than others ; and what fits well upon one would appear very aukward in another. Every one, therefore, ffiouid firft endeavour to know himfelf, and manage accordingly. Though in moft cafes, nature may be much affifted and improved by art and exercife. See Profeffor Ward’s Syjlem of Ora*' tory. ORA Oratory Oratory, among the Romanifts, a clofet or like o jl! ^ apartment near a bed-chamber, furnifhed with an al- rc"a ', tar, crucifix, &c. for private devotions. ORB, in aftronomy, denotes an hollow globe or fphere. Orb, in ta&ics, is the difpofing of a number of foldiers in circular form of defence. The orb has been thought of confequence enough to employ the attention of the famous marfhal de Puyfegur in his art of war, who prefers this pofitfon to throw a body of infantry in an open country, to refift cavalry, or even a fuperior force of infantry ; becaufe it is regular, and equally ftrong, and gives an enemy no reafon to expeft better fuccefs by attacking one place than an¬ other. Ctefar drew his whole army in this form, when he fought againft Labienus. The whole army of the Gauls were formed into an orb, under the command of Sabinus and Cotta, when fighting againft; the Ro¬ mans. The orb was generally formed fix deep. ORBIT, in aftronomy, the path of a planet or co¬ met, or the curve that it deferibes in its revolution round its central body ; thus, the earth’s orbit is the curve which it deferibes in its annual courfe round the fun, and ufually called the ecliptic. See Artronomy, paffim. ORCADES, the Orkney Tflands. See Orkney. ORCHARD, a garden-department, coufigned en¬ tirely to the growth of ftandard fruit-trees, for furnifh- ing a large fupply of the moft ufeful kinds of fruit. In the orchard you may have, as flandards, all forts O R C of apple-trees, moft forts of pears and pluma, and all O: chard, forts of cherries: which four fpecies are the capital or- 'r“"‘ chard fruits; each of them comprifing numerous valu¬ able varieties. But to have a complete orchard, you may alfo have quinces, medlars, mulberries, fervice- trees, filberts, Spanifh nuts, berberries ; likewife wal¬ nuts and chefnuts; which two latter are particularly applicable for the boundaries of orchards, to fereen the other trees from the infults of impetuous winds and cold blafts. All the trees ought to be arranged in rows from 20 to 30 feet diftance, as hereafter diredled. But fometimes orchards confift entirely of apple- trees, particularly in the cyder-making counties, where they are cultivated in very great quantities in large fields, and in hedge-rows, for the fruit to make cyder for public fupply. And fometimes whole orchards of very confiderable extent are entirely of cherry-trees. But in this cafe, it is when the fruit is defigned for fale in fome great city, as London, &c. for the fupply of which city, great numbers of large cherry-orchards are in, fome of the adjacent counties, but more particularly in Kent, which is famous for very extenfive cherry- orchirds; many of which are entirely of that fort call¬ ed Kentifh-cherry, as being generally a great bearer ; others are ftored with all the principal forts of culti¬ vated cherries, from the earlieft to the lateft kinds. See Prunus Cerafus. *A general orchard, however, compofed of all the before-mentioned fruit-trees, ffiuuld conlift of a doufele- p action 1 O R C [47 portion of apple-trees or more, becaufe tlicy are con- fiderably the moft ufeful fruit, and may be continued for ufe the year round. The utility of a general orchard, both for private -ufe and profit, ftored with the various forts of fruit- trees, muft be very great, as well as afford infinite plea- fare from the delightful appearance it makes from early fpring till late in autumn : In fpring the various trees in bloffom are highly ornamental; in fummer, the pleafure is heightened by obferving the various fruits advancing to perfeftion ; and as the feafon advances, the mature growth of the different fpecies arriving to perfection, in regular fucceffion, from May or June, until the end of Oftober, muft afford exceeding de¬ light, as well as great profit. Of the proper Evtent, Situation, and Soil for this De¬ partment.^ As to the proper extent of ground for an orchard, this muft be proportioned, in fome meafurc, to the extent of land you have to work on, and the quantity of fruit required either for private ufe or for public fupply : fo that an orchard may be from half an acre to 20 or more in extent With refpeCf to the fituation and afpeCt for an orch¬ ard, we may obferve very thriving orchards both in low and high fituations, and on declivities and plains, in various afpeefs or expofures, provided the natural foil is good : we fhould, however, avoid very low damp fituations as much as the nature of the place will admit ; for in very wet foils no fruit trees will profper, nor the fruit be fine : but a moderately low fituation, free from copious wet, may be more eligible than an .-elevated ground, as being lefs expofed to tempeftuous winds ; though a fituation having a fmall declivity is veiy defirable, efpecially if its afpeft incline towards the eaft, fouth-eaft, or foutheily, which are rather more eligible than a wefterly afpect; hut a north afpeCt is the world of all for an orchard, unlefs particu¬ larly compenfated by the peculiar temperament or good quality of the foil. And as for foil, any common field or pafture that produces good crops of corn, grafs, or kitchen-gar¬ den vegetables, is fuitable for an orchard; if it fhould prove of a loamy nature, it will be a particular advan¬ tage : any foil, however, of a good quality, not too light and dry, or too heavy, ftubborn, or wet, but of a medium nature, of a foft, pliant temperature, not lefs than one fpade deep of good ftaple, will be proper for this purpofe. Preparation of the Ground.~\ The preparation ef the ground for the reception of trees, is by trenching; or, if for very confiderable orchards, by deep ploughing ; but trench-digging, one or two fpades, as the foil will admit, is the moft eligible, either wholly, or only for Jute prefent in the places where the lines of trees are to ft and, a fpace of fix or eight feet wide, all the way in each row, efpecially if it be grafs-ground, and in¬ tended to be kept in the fward ; or if any under-crops are defigned to be raifed, the ground may be wholly trenched at firft : in either cafe trench the ground in the ufual way to the depth of the natural foil; and if m grafs, turn the fward clean to the- bottom of each trench, which, when rotted, will prove an excellent manure. In planting orchards, however, on grafa-grounds, fome only dig pits for each tree, capacious enough for N9252. a O R C the reception of tire roots, loofening the bottom well, without the labour of digging any other part of the ground. The ground muft be fenced fecurely againft cattle, &c.either with a good ditch and hedge, orwith a paling- fence, as may be moft convenient. See Hedges. Method of planting the Trees.~\ The beft feafon for planting all the forts of fruit-trees is autumn, foon af- ter the fall of the leaf, from about the latter end of O&ober until December; or indeed it might be per¬ formed any time in open weather from October until March. Choofe principally full ftandards, with ftraight clean ftems, fix feet high; each with a branchy well-formed head, or from two or three to four or five years growth; and let feveral varieties of each particular fpecies be chofen, that ripen their fruit at different times, from the earlieft to the laceft, according to the nature of the different forts, that there may be a proper fupply of every fort regularly during their proper feafon. Of apples and pears in particular, choofe a much greater quantity of the autumnal and late-ripening kinds than of the early forts ; but moft of all of apples: for the fummer-ripening fruit is but of fhort duration, only proper for temporary fervice ; but the later ripening kinds keep found fome confiderable time for autumnal ufe ; and the lateft forts that ripen in October, con¬ tinue in perfedion for various ufes all winter, and fe¬ veral forts until the feafon of apples come again. Having made choice of the proper forts, and mark¬ ed them, let them be taken up with the utmoft care, fo as to preferve all their roots as entire as poffible ; and when taken up, prune off any broken or bruifed parts of the roots, and juft tip the ends of the princi¬ pal roots, in general, with the knife on the under fide, with a kind of flope outward. If the trees have been already headed, or fo trained as to have brauched cut into regular fhoots to form each a proper head, they muft be planted with the faid heads entire, only retrenching or fhortening any irregular or ill-placed finoot that takes an aukward di- redion, or grows acrofs its neighbours, or fuch as may run confiderably longer than all the reft, &c. The arrangement of the trees in the orchard muft be in rows, each kind feparate, at diftanees according to the nature of the growth of the different forts; but for the larger growing kinds, fuch as apples, pears, plums, cherries, &c. they fhould Hand from 25 to 30 or 40 feet every way afunder, though 25 or 30 feet at moft is a reafonable diftance for all thefe kinds. Each fpecies and its varieties fhouid generally be in rows by themfelves, the better to fuit their refpediive modes of growth : though for variety there may be fome rows of apples and pears arranged alternately, as alio of plums and cherries ; and towards the bounda¬ ries there^ may be ranges of leffer growth, as quinces, medlars, filberts, &c. and the outer row of all may be walnut-trees, and fome chefnuts, fet pretty clofe to de¬ fend the other trees from violent winds. According to the above diftances, proceed to flake out^the ground for making the holes for the reception of the trees ; which if made to range every way, will have a very agreeable effedt, and admit the currency of air, and the fun’s influence more effedlually. But in planting very extenlive orchards, fome di¬ vide Orchard. O R C [ 473 3 O R C ■'Orchard, vide t’ne eround into large fquares or quarters, of dif> Crrhcfton. ferent dimenfions, with intervals of fifty feet wide be- 11 y ' tween ; ferving both as walks, and for admitting a greater currency of air ; in different quarters planting different forts of fruit, as apples in one, pears in an¬ other, and plums and cherries in others, &c. and thus it may be repeated to as many quarters for each fpe- cier and its varieties as may be convenient. As to the mode of planting the trees: A wide hole muft be dug for each tree, capacious enough to re¬ ceive all the roots freely every way without touching the tides. When the holes are all ready, proceed to planting, one tree in each hole, a perfon holding the flem eredt, whilft another trims in the earth, pre- vioufly breaking it fmall, and calling it in equally all about the roots, frequently fhaking the tree to caufe the mould to fettle in clofe about all the fmaller roots and fibres, and fo as to raife the tree gradually up, that the crown of the roots may be but two or three inches below the general furface ; and when the hole is filled up, tread it gently, firft round the outlide, then near the flem of the tree, forming the fu'rface a little hollow ; and then if on the top of all is laid fome inverted turf to the width of the holes, forming it with a fort of circular bank, three or four inches high, it will fupport the tree, and guard the roots from dry¬ ing winds and the fummer’s drought : obferving that each tree ftand perfectly upright, and that they range exadily in their proper rows. OTICHESTON St Mary’s, on Salifbury plain in Willfhire, about nine miles fiom Salifbury. There is a curious fpecies of grais found at this place in a meadow belonging to Lord Rivers, at prefent in the pofTeflion of a farmer. The meadow is fituated on a fmall brook, is fre¬ quently overflowed, and fometimes continues fo a great part of the winter. It bears the greateft burden in a wet feafon. We have the following account of this peculiar fpe- cies of grafs in Letters and Papers in Agriculture, &c. The farmer in whofe poffeflion the meadow is, informs us, “ That it generally grows to the height of about 18 inches, and then falls and runs along the ground in knots to the length of 16 or 18 feet, but that he has known inftances of its running to the length of 25 feet. “ The meadow contains about two acres and a half. It is mowed twice in a feafon, and the average quan¬ tity is generally about twelve loads (tons) of hay the frrft mowing, and fix the fecond ; though fometimes confiderably more. The tithe of the meadow has been compounded for at 9I. a year. The grafs is of a very fweet nature ; all cattle, and even pigs, eat it very ea¬ gerly. When made into hay, it is excellent, and im¬ proves beafls greatly. The farmer Lys, his horfes will eat it in preference to corn mixed with chaff, when both are fet before them together.” “ T his account appeared to us fo Angular, and the crop of grafs fo very extraordinary, that our fecretary went to Orchtflon to examine more particularly into it. The farmer, and divers other perfons in the vil¬ lage, conflrmed the account contained in this letter, of its amazing produce in fummers when the meadows bad been overflowed in the preceding winter and fpring; but when the winter had been dry, and the Vot. XIII. Part IL meadow not overflowed, the crop of grafs was not Orchefton. near fo large. There did net appear to be any thing' “V” peculiar in the foil; nor were the other plants or weeds growing on it more luxuriant than in many other fi- milar fituations. Some of this grafs was fent to the fociety at Norwich; fome ingenious members of which inform us, that they think it is a fpecies of the agroftls polymorphia, mentioned by Hudfon in his Flora Anglica, of which there are feveral varieties. “ Camden mentions, in his Britavnia, a grafs grow¬ ing near the place where this is found, which he calls trailing Dog's grafs, and fays, that * hogs were fed with it.’ “ From all the inquiry made, we have not found this fpecies of grafs growing in any other part of the kingdom; hence it is poffible that there may be fome* thing in the foil of this meadow peculiarly favourable to its growth. We fhall not, however, determine on this point, but recommend trials to be made of propa¬ gating it, by flowing the feed in other places fubjehb to be overflowed in the fame manner. If it can be propagated generally, it mull turn out the moft pro¬ fitable to the farmer of any grafs yet difeovered, and be of great beneflt to the community.” We have this further account of it in the Gentle¬ man’s Magazine for March 1782 : “ The firfl: notices of the Orchefton or Maddington grafs, as far as I can And, are to be met with in Dr How’s Philologia Bri¬ tannic a, printed in 1650, where it is called ‘ Gramen ca- ninum fupinum longijjimumi non deferiptum, and is faid to grow nine miles from Salifbury, by Mr Tucker’s at Maddington, wLerewith they fatten hogs, and which is 24 feet long ; and which’, the author adds, ‘ may happily be a kind of gramen canmum fupinum, though Gerard it upright dog's grafs.' Mr Stonehoufe, p. 26. I have not been able to afeertain the refidence of Mr Stonehoufe, who feems to have been the Arft; that made the know ledge of this grafs public. He is mentioned feveral times in Ray’s Synopfs Stirpium ; but I can And no anecdotes relative to him. Dr How’s account is taken into Merret’s Pinax, printed in 1667, the author having added, that ‘ this grafs is alfo found in fome parts of Wales.’ Mr Ray mentions it from both thefe authors, in his Catalogus Plantarum Anglia, 1670 ; and refers to Fuller’s Worthies for a farther ac¬ count of it, wdiich work wras printed in 1662. It does not appear that Ray had any opportunity of examin¬ ing this remarkable produftion, Ance he has not intro¬ duced it into bis Synopfs, in either of the editions which were publifhed in his lifetime ; and in the lift of Wiltfhire plants printed in Camden’s Britannia, he recommends it to the inquiAtion of the induftrious herbalifts of that country. Dr Dillenius afterwards introduced it into the Indiculus plantarum dubiarum, ful joined to the third edition of Ray’s Synopfis. “ Since the fpirit of improvement in agriculture has been excited of late years, the curiofity of the public has been raifed relating to it, but the fpecies w'as not fufficiently determined. It has been thought by fome to be the alopecurus geniculatus, or fiote fox-tad grafs, of Hudfon’s 2d edit. p. 27. by others to be the agrofis folonifera, or creeping lent-grafs, ib. p. 31. See The Farmer's Magazine for 1778, p. 232, 259, 289, 790. “ Being very defirous of having this matter cleared 3 0 «P» O R C r 474 1 O R C ©rchefton tjp, I procured in July laft, from the farmer himfelf at receptacle, between the divifion of the petals ; the Orchk Orchis Addington, a bundle of this grafs when it was in upper lip is fhort and ereft, the under large, broad fpike ; and by this means I found it to be no other >-->— than the triticunt repem> Hudfon, p. yy. or common clogs grafs, quick-grafs, or couch-grafs, in a moil luxuriant flate of growth. The length of the culm is greatly influenced by the nature of the feafons. Its place of growth is in a meadow that is covered with water du¬ ring the grenteft part of the winter and fpring. In this inundated foil it acquires a length of ftalk,aa fuc- culency, and vigour, which are indeed very furprifing. Of the bundle that was fent to me, moil of the plants were feven feet long, and many of the fpikes or ears contained 38 and 40 glumes, or flower-bearing hulks; whereas the plant in common does not contain more than half that number: and it was faid by the people of that neighbourhood to have been a very unfavour¬ able feafon for this grafs. £‘ That the above-mentioned fpecies is the grafs which at this time conftitutes the bulk of that afto- nilhing crop which we read of, is to me fufflciently af- certained ; but whether, ever fince the firft notice of this grafs, this fpecies alone has been the cultured one in this fituation, I do not decide, but think it a matter worthy of further inveftigation; fince it flrould feem that the foil and fituation are in a peculiar man¬ ner adapted to certain plants of the graminous tribe. I obferved that a plant or two of the phalarh arundina- cea, or reed Canary grafs, Hudfon, p. 2 3. which by ac¬ cident were fent with the above-mentioned grafs, ex¬ ceeded in the thicknefs and fucculency of the ftalk the ordinary fize, and were alfo equal to the dogs grafs in length.’, Thefe cxtradts we thought it our duty to lay before our readers ; and we have done it without any obfer- vation or comment of our own ; becaufe we with to give them every information which is either curious or may be ufeful: and with this we reft fatisfied, not wifhing to obtrude our remarks, where, from the fcan- tunefs of information or the doubtfulnefs of the cafe, they cannot be made with confidence. ORCHES FRA, in the Grecian theatres, was that part of the profeenium or ftage where the chorus ufed to dance. In the middle of it was placed the hoy io* or pulpit. The orcheftra was femicircular, and fur- rounded with feats. In the Roman theatres it made no part of feena, but anfwered pretty nearly to the pit in our playhoufes, being taken up with feats for fenators, magiftrates, veftals, and other perfons of di- ftinftion. The aftors never went down into it. See Theatre. ORCHIA lex, inftituted by Orchius the tribune in the year of Rome 566. Its intention was to limit the number of guefts that were to be admitted at an entertainment; and it alfo enforced,Ithat during fupper, which was the chief meal among the Romans, the doors of every houfe fhould be left open. ORCHIS, fool-stones : A genus of the diandria order, belonging to the gynandria clafs of plants; and in the natural method giving name to the feventh or¬ der, Orchida Its chara&ersare thefe: It has a Angle ftalk, with a vague fheath, and no empalement; the flower hath five petals, three without and two within; the aeftarium is of one leaf, fixed to the fide of the and fpreading ; the tube is pendulous, corniform, or like a horn, and prominent behind ; it hath two (hort flender ftamina, fitting upon the pointil, with oval ere fig- nifying a “ tomb or fepulchre,” or from “ an oath by the river Styx.” The ancients gave this name to all the divinities of the infernal regions, even to Cerberus. There was a river of the fame name in Theflaly, which took its rife from the marfhes of the Styx, and the waters of which were fo thick that they floated like oil upon the furface of the river Peneus, into which they difeharged themfelves. This river probably fuggefted to the poets the idea of the infernal abodes, which they denominated Onus. This deity has been confounded with Charon: he had a temple at Rome. ORDEAL, an ancient form of trial. See Trial. — It was an appeal to the immediate interpofitioa of divine power, and was peculiarly diftinguilhed by the Ordeal, appellation of judicium Dei; and fometimes vulgaris '-—-v*""' purgatio, to diftinguilh it from the canonical purga¬ tion, which was by the oath of the party. There were two forts of it more common than the reft, at lea ft in Europe, fire-ordeal, and water-ordeal. The for¬ mer was confined to perfons of higher rank, the latter to the common people. Both thefe might be performed by deputy : but the principal was to anfwer for the fuccefs of the trial ; the deputy only venturing fome corporal pain, for hire or perhaps for friendfhip. That the purgation by ordeal, of fome one kind or other, is very ancient, admits not of a doubt; and that it was very univerfal in the times of fuperftitious bar¬ barity, is equally certain. It feems even to have been known to the ancient Greeks: for in the Antigone of Sophocles, a perfon fufpe&ed by Creon of a mif- demeanour, declares himfelf ready “ to handle hot iron and to walk over fire” in order to manifeft his innocence ; which the fcholiaft tells us was then a very ufual purgation. And Grotius gives us many inftances of water-ordeal in Bithynia, Sardinia, and other places. It feems, however, to be carried to a greater height among the Hindoos, than ever it has been in any nation or among any people however rude or barbarous ; for in a paper of the Afiatic Refearches communicated by the celebrated Warren Haftings, Efq ; we find that the trial by ordeal among them is con- duefted in nine different ways : firft, by the balance ; fe- condly, by fire ; thirdly, by water ; fourthly, by poifon ? fifthly, by the Coflia, or water in which an idol has been wafhed ; fixthly, by rice ; feventhly, by boiling oih{ eighthly, by red-hot iron ; ninthly, by images. I. Ordeal by the balance is thus performed. The beam having been previoufly adjlifted, the cord fixed, and both feales made perfecfly even, the perfon ac- cufed and a Pandit faff a whole day ; then, after the acculed has been bathed in facred water, the homaf or oblation, prefen ted to fire, and the deities worftup- ped, he is carefully weighed ; and, when he is taken out of the fcale, the Pandits proftrate themfelves be¬ fore it, pronounce a certain mentra or incantation, agreeably to the Saftras, and, having written the fub- ftance of the accufation on a piece of paper, bind it on his head. Six minutes after, they place him again in the fcale ; and, if he weigh more than before, he is held guilty ; if lefs, innocent ; if exaftiy the fame, he muft be weighed a third time ; when, as it is writ¬ ten in the Mitacfhera, there wall certainly be a diffe¬ rence in his weight. Should the balance, though well fixed, break down, this wotnd be confi iered as a proof of his guilt. II. For the fire-erdeal, an excavation, nine hands long, two fpans broad, and one fpan deep, is made in the ground, and filled with a fire of pippal wood : in¬ to this the perfon accufed muft walk bare footed; and, if his foot be unhurt, they hold him blamelefs ; if burned, guilty (a). 3 O 2 III. (a) In Europe fire-ordeal was performed either by taking up in the hand, unhurt, a piece of red-hot iron, of one, two, or three pounds weight; or elfe by walking, barefoot, and blindfold, over nine red-hot plough- Ihares, laid lengthwife at unequal diftances : and if the party efcaped being hurt, he was adjudged innocent | but if it happened otherwife, as without collufion it ufually did, he wa§ then condemned as guilty. How- '»-.ver, by this latter method Queen Emma, the mother of Edward the Confeffor, is mentioned to have clear •el O R D [ 476 ] O R D Orden1. Uf. Wster ordeal is performed by caufing the per- -"■V " fon accufed to fland in a-fufficient depth of water, ei¬ ther flowing or ftagnant, to reach his navel; but care fhould be taken, that no ravenous animal be in it, and that it be not moved by much air: a brahman is then directed to go into the water, holding a ftaff in his hand ; and a fol lier (hoots three arrows on dry ground from a bow of cane: a man is next difpatched to bring the arrow which has been (hot fartheft; and, after he has taken it up, another is ordered to run from the edge of the water; at which inftant the perfon accufed is told to grafp the foot or the (taff of the brahman,' who (lands near him in the water, and immediately to dive into it. He mud remain under water, till the two men, who went to fetch the ar¬ rows, are returned; for, if he raife his head or body above the furface, before the arrows are brought back, his guilt is confidered as fully proved. In the villages near Benares, it is the practice for the perfon who is to be tried by this kind of ordeal, to (land in water up to his navel, and then, holding the foot of a brah¬ man, to dive under it as long as a man can walk 50 paces very gently ; if, before the man has walked thus far, the accufed rife above the water, he is con¬ demned ; if not, acquitted (b). XV. There are two forts of trial by poifon ; firft, the Pandits having performed their homa, and the perfon accufed his ablution, two rettis and a half, or feven barley-corns, of vijhanaga^ a poifonous root, or offunc'hya, that is, white arfenic, are mixed in eight tnajhas, ,or 64 rettis, of clarified butter, which the accufed mud eat from the hand of a brahman : if the poifon produce no vihble eflfefl, he is abfolved ; otherwife, condemned. Secondly, the hooded fnake, called nag a, is thrown into a deep earthen pot, into which is dropped a ring, a feal, or a coin : this the perfon accufed is ordered to take out with his hand ; and, if the ferpent bite him, he is pronounced guilty} if not, innocent. V. Trial by the co(ha is as follows: the accufed is made to drink three draughts of the water, in which the images of the fun, of devi, and other deities, have been walhed for that purpofe ; and if, within 14 days, he has any (icknefs or indifpofftion, his crime is con* fidered as proved. VI. When feveral perfons are fufpefted of theft* fome dry rice is weighed with the (acred Hone called falgram, or certain Jlocas are read over it; after which the fufpe&ed perfons are feverally ordered to chew a quantity of it: as foon as they have chewed it, they are to throw it on fome leaves vipippal, or, if none be at hand, on fome b’hufja pair a, or bark of a tree from Nepal or Cafhmir. i he man, from whofe mouth the rice comes dry or ftained with blood, is hoidea guilty, the retl are acquitted. VII. The ordeal by hut oil is very Ample : when it is heated fufficiently, the accufed thrufls his hand into it } and, if he be not burned, is held innocent (c). Vlli Orelcab *d her chara&er, when fufpefted of familiarity with Alwyn bifliop of Wincbefter. The firfl: account we have of Chriftians appealing to the fire-ordeal, as a proof of their innocence, is that of Simplicius, bifhop of Au- tun, who lived in the fourth century. This prelate, as the ilory is related, before his promotion to the epif- copal order, had married a wife, who loved him tenderly, and who, unwilling to quit him after his advance¬ ment, continued to deep in the fame chamber with him. The fan£lity of Simplicius fuffered, at lead in the voice of fame, by the conllancy of his wife’s affedtion ; and it was rumoured about, that the holy man, though a bifhop, perfifted, in oppofition to the eccleliafiical canons, to tade the fweets of matrimony: upon which his wife, in the prefence of a great concourfe of people, took up a coniiderable quantity of burning coals, which (ne held in her cl oaths, and applied to her breads, without the lead hurt to her perfon or her garments, as the legend fays ; and her example being followed by her hufband with the like fuccefs, the (illy multitude admired the miracle, and proclaimed the innocence of the loving pair. A Amilar trick was play¬ ed by St Brice, in the Afth century. Mofh. Eccl. Hijl. v. 2. (b) A very peculiar fpecies of water-ordeal is faid to prevail among the Indians on the coad of Malabar, A perfon accufed of an enormous crime is obliged to fwim over a large river abounding with crocodiles; and if he efcapes unhurt, he is edeemed innocent. At Siam, bdides the ufual methods of Are and water ordeal, both parties are fometimes expofed to the fury of a tiger let loofe for that purpofe ; and if the bead fpares either, that perfon is accounted innocent; if neither, both are held to be guilty; but if he fpares both, the trial is incomplete, and they proceed to a more certain criterion. In Europe water-ordeal was performed, either by plunging the bare arm up to the elbow in boiling-water, and efcaping unhurt thereby, or by cading the perfon fufpecled into a river or pond of cold water ; and if he floated therein without any a&ion of fwimming, it was deemed an evidence of his guilt ; But if he funk, he was acquitted. It is eafy to trace out the traditional relics of this water-ordeal, in the ignorant barba¬ rity dill pra&ifed in many countries to difeover witches, by cading them into a pool of water, and drowning them to prove their innocence. And in the Eadern empire the fire-ordeal was ufed for the fame purpofe by fhe emperor Theodore Lafcaris; who, attributing his ficknefs to magic, caufed all thole whom he fufpe&ed to handle the hot iron: thus joining (as has been well remarked) to the mod dubious crime in the world, the mod dubisus proof of innocence. . (c) Bhis fpecies of trial by ordCal is thus performed : The ground appointed for the trial is cleared and rubbed with cow-dung ; and the next day at fun-rife the Pandit worlhips Ganefa or the Hindoo Janus, prefents hia obla-r tions, and pays adoration to other deities, conformably to the Sajlra; then having read the incantation preferibed, he places a round pan of gold, filver, copper, iron, or clay, with a diameter of fixteen fingers, and four fingers deep ; and throws into it oney^r, or eightyweight, of clarified butter or oil of fefatnum. After this a ring of O R D [ 477 1 . . ° R D . , 1 t Tr r .'l r thev an iron ial/, c. Unlefs the lofs of the accufer amount to a thou- _grdica • , V1/ T/n f/n red hot ond place it in the fand pieces of filver, the accufed muft not be tried by baH, nor by poifon, nor by the fcaka ; hands ot the pcrion accmea , wi , but if the o(rellce be againft thc king, or if the crime ,s the crdeal by Mcrmird, which ia be heinous, he muft acquit himfelf by one of thofe the name of the //oca appropriated to this mode of trial, trials in all cares. Ordeal. viiv- ».*• v-i r i • r • r either an image, named Dharma, or the genius ot jul_ tice, is made of filver, and another, called Jdharma, of clay or iron, both of which are thrown into a large earthen jar ; and the accufed having thruft his hand into it, is acquitted if he bring out the filver image, but condemned if he draw forth the iron ; or, the fi¬ gure of a deity is painted on wdiite cloth, and another on black ; the firft of which they name dharma, and the fecond adharma: thefeare feverally rolled up in cow- dung, and thrown into a large jar without having ever been fhown to the accufed ; who muft put his hand into the jar, and is acquitted or convicted as he draws out the figure on white or on black cloth. Though we have pioceeded thus far, we have not exhaufted Mr Haftings’s communication. . He goes on to fhow (to greater extent than our limits permit us to follow him) the manner in which each ordeal abovementioned was executed, giving examples, and unfolding other particulars of fome importance in de¬ veloping the nature of thefe barbarous cuftoms. For thefe particulars, however, we muft refer to the book itfelf. But as this fubjedl unqueftionably occupies an important department in the hiftory of human fuper- llition, we fhall give the Indian law of ordeal from the fame paper; when we fhall introduce fome further particulars concerning this extraordinary cuftom, which are not to be found in the above account, but which deferve to be noticed. “ i. Thc balance, fire, water, poifoa, the idol—thefe are the ordeals ufed here below for the proof of inno¬ cence, when the accufations are heavy, and when the accufcr offers to hazard a mulft (if he fhouid fail) : 2. Or one party may be tried, if he pleafe, by or- . deal, and the other muft then rifle an amercement; but the trial may take place even without any wager, if the crime committed be injurious to the prince. g. The fovereign, having fummoned the accufed while his clothes are yet moift from bathing, at fun- rife, before he has broken his faft, fhall caufe all trials by ordeal to he condufted in the prefence of Brahmans. 4. The balance is for women, children, old men, the blind, the lame, Brahmans, and the frek ; for the Stiilra, fire or water, or feven barley-corns of poifon. trials in all cafes. 6. He who has recotirfe to the balance muft be at¬ tended by perfons experienced in weighing, and go down into one fcale, with an equal weight placed in the other, and a groove (with water in it) marked on the beam. 7. « Thou, O balance, art the manfion of truth ; thou waft anciently contrived by deities: declare the truth, therefore, O giver of fuccefs, and clear me from all fufpicion. 8. ‘ If 1 am guilty, O venerable as my own mo¬ ther, then fink me down ; but if innocent, raife me aloft.’ Thus fhall he addrefs the balance. 9. If he fink he is convi&ed, or if the feales be broken ; but if the firing be not broken, and he rife aloft, he muff be acquitted. 10. On the trial by fire, let both hands of the ac¬ cufed be rubbed with rice in the hufk, and well exa¬ mined : then let feven leaves of the Afwatt'ha (the re¬ ligious fig-tree) be placed on them, and bound with- feven threads. xi. ‘ Thou, O fire, pervadeft all beings; O caufe of purity, who giveft evidence of virtue and of lin, de¬ clare the truth in this my hand.* 12. When he has pronounced this, the prieft ftiall place in both his hands an iron ball, red-hot, and weighing fifty {T>)palas. 13. Having taken it, he fhall ftep gradually into feven circles, each with a diameter of iixteen fingers, and feparated from the next by the fame fpace. 14. If, having caft away the hot ball, he fhall again have his hands rubbed with rice in the hufk, and fhall fhow them unburned, he will prove his innocence. Should the iron fall during the trial, or fhouid a doubt arife (on the regularity of the proceedings), he muft be tried again. 15. ‘ Preferve me, O Varuna, by declaring the truth.’ Thus having invoked the god of waters, the accufed fhall plunge his head into the river or pool, and hold both thighs of a man, who fhall Hand in it up to his navel : 16. A fwift xunner fhall then haften to fetch an arrow fhot at the moment of his plunging ; and if, while the runner is gone, the piiefl fhall fee the head of srold, or filver, or iron, is cleaned and wafhed with water, and caft into the oil; which they proceed to heat, and when it is very hot put into it a frefh leaf of pippala, or of bilmia : when the leaf is burned, the oil xs known to be fufficiently hot. Then, having pronounced a mentra over the oil, they order the party accufed to take the ling out of the pan ; and if he take it out without being burned, or without a blifter on his hand, his innocence is confidered as proved; if not, his guilt *• v , (d) A pala is four carjhas, and a carjha eighty ratiicds, or feeds of the Gunga creeper, each weighing above s grain and a quarter, or, correftly, WV gr. * Ft is rerorted, that this cuftom, with fome flight variations, ftill prevails among the Indians on the coaft of Malabar. The nrocefs there is faid to begin after the aca.fed perfon has been thoroughly waited in the prefence of the prince of the country, the nriefb Ac.the pot is filled with boiling lead; and the accufed muft take the ring out three times fucceffively. On the Malabar coaft, this ordeal Teems only to be ufed when the perfoa is accufed of a capital crime ; for after the procefs the arm is hound with cloth and fealed; and after feveral days, being brought out publicly, and the arm infpedled, if it is .ound burnt he isinflamly put to death; if not, his accuier undergoes the fame trial, and being burnt, forfeits his hie. Orueal O R D I 478 of the aCcufed under water, he muft be difeharged as innocent. 17. ‘ Thou, O poifon, art the child of Brahma, ftedfaft in juftice and in truth : clear me then from this heavy charge, and, if I have fpoken truly, become nedlar to me.’ 18. Saying this, he fhall fwallow the poifon Sarnga, from the tree, which grows on the mountain Hima¬ laya ; and if he digefts it without any inflammation, the prince {hall pronounce him guiltlefs. ip* Or the prieft. flrall perform rites to the image of fome tremendous deity ; and, having bathed the idol, {hail make the accufed to drink three handfuls of the water that has dropped from it: 20._ If in fourteen days after he fuffer no dreadful calamity from the aft of the deity or of the king, he muft indubitably be acquitted." The fuperftitious weaknefs of mankind, when left to themfelvei, is aftonifhing. There is indeed no. thing fo abfurd but they may be made mold firmly to believe, nor fo impious but they will do. Nor can a more notorious inltance of the truth of this aflertion be poffibly given than that of the trial by ordeal. The grofs abfurdity as well as impiety of pronouncing a man guilty unlefs he was cleared by a miracle, and of expefting that all the powers of nature fliould be fuf- pended by an immediate interpofition of providence to fave the innocent, whenever it was prefumptuoufly required, is felf-evident. Yet the origin of it* may be traced as well to neceffity as to fuperftition. At the time in which it originated in England, as well as in other countries of Europe, it was no eafy matter for an innocent perfon, when accufed of guilt, to get himfelf cleared by the then eftablifhed mode of trial (See I rial). It was therefore natural for fuperfti¬ tion to fly to Heaven for thofe teftimonies of inno¬ cence which the abfurdity of human laws often pre¬ vented men from obtaining in the ordinary way 5 and in thja way doubtlefs did the trial by ordeal com mence : and thus begun by necdfitous fuperftition, it w:;s foftered by impious prieftcraft and unjuft power. There was daring all the proceftes great room for cohufion and deceit; and there can be no queftion but it was often praftifed : it could not therefore on any account, or in any cafe, be a fign of innocence or of guilt. Befides thofe particular methods of trial which wt have already mentioned, there were fome few more common in European countries ; as the judicial combat—the ordeal of the crofs —the ordeal of the corfned. The judicial combat was well fuited to the genius and fpirit of fierce and warlike nations, and was, as we may reafonably expeft, one of the moft ancient and uni- verfal modes of trial. We know that it was exceedingly common in Germany in very remote ages. It was alfo ufed in fome countries on the continent at pretty early periods : it is not, however, mentioned in any of the Anglo-Saxon Ews ; and it does not appear to have been much ufed in England till after the Conqueft. ihere are, however, two remarkable inftances of it upon record, which we ftiall give in the words of Dr rry <4 Hntnr> hereditary ftandard-bearer of England, fled from a battle in Wales, A. D. 11 c8, threw from him the royal ftandard, and cried out, m*h others, that the king was flain. Some time af* 1 O R D ter, he was accufed of having done this with a trea- fonable intention, by Robert de Montfort, another ' great baron, who offered to prove the truth of his ac cufation by combat. Henry de Efl'ex denied the' charge, and accepted the challenge. When all preii minanes were adjufted, this combat was accordinHy fought, in the prefence of Henry II. and all his court. Eftex was defeated, and expefted to be carried out to immediate execution. But the king, who was no friend to this kind of trial, fpared his life, and con¬ tented himfelf with confifcating his eftate, and making him a monk in the abbey of Reading. “ The priory of Tinmouth, in Northumberland was a cell of the abbey of St Alban’s. One Simon o Iinmouth claimed a right to two corrodies, or the maintenance of two perfons in the priory, which the prior and monks denied. This caufe was brought be¬ fore the abbot of St Alban’s, and his court-baron, who appointed it to be tried by combat on a certain day before him and his barons. Ralf Gubion, prior of 1 inmouth, appeared at the time and place appointed, attended by his champion, one William Pegun, a man of gigantic flature. The combat was fought, Pegun was defeated, and the prior loft his caufe ; at which he was fo much chagrined, that he immediately re- iigned his office. This judicial combat is the more re¬ markable, that it was fought in the court of a fpiritual baron, and that one of the parties was a prieft." .We need fcarcely add, that this deteftabie form of tn.d was the foundation of the no lefs deteftabie crime of duelling, which io much difgraces our age and na¬ tion ; which is defended only by ignorance, falfe ho¬ nour, and injuftice ; which is a relick of barbarous fu¬ perftition ; and which was abfolutely unknown to thofe brave and generous nations, the Greeks and Romans, which it is fo much the fafhion to admire, and who in this particular fo well merit our imitation. See Duel. ^ fo much the cuftom in the middle ages of Chriftianity, to refpeft the crofs even to fuperftition, that it would have been indeed wonderful if the fame ignorant bigotry had not converted it into an ordeal • accordingly we find it ufed for this purpofe, in fo many different ways as almoft to preclude defeription. We {hall however tranferibe, for the fatisfaftion of our readers, Dr Henry’s account of it, and of the corfned : “ In criminal trials, the judgment of the crofs was commonly thus condufted. When the pri- loner had declared his innocence upon oath, and ap¬ pealed to the judgment of the crofs, two flicks were prepared exaftly like one another; the figure of the crofs was cut on one ol thefe flicks, and nothing on the other: each of them was then wrapped up in a quantity of fine white wool, and laid on the altar, or on the relicks of the faints; after which afolertm prayer was put up to God, that he would be pieafed to dif- cover, by evident figns, whether the priloner was in¬ nocent or guilty. Thefe folemnities being finiftied, a prieft approached the altar, and took up one of the flicks, which was uncovered with much anxiety. If it was the flick marked with the crofs, the pnfoner was pronounced innocent; if it was the other, he waa declared guilty.. When the judgment of the crofs was appealed to in civil caufes, the trial was condufted in this manner : The judges, parties, and all concerned, being affembled in a church) each of the parties chofe a prieil. Ordeal. O R D Ordeal, a prieft> the youngeft and ftoutefl that he could find, —v ' to be his reprefentative in the trial. Thefe reprefenta- tives were then placed one on each fide of fonie famous crucifix ; and at a fignal given, they both at once ftretched their aims at full length, fo as to form a crofs with their body. In this painful pofture they continued to ftand while divine fervice was performing; and the party whofe reprefentative dropped his arms firft loll his caufe. “ The corfned, or the confecrated bread and cheefe, was the ordeal to which the clergy commonly appealed when they were accufed of any crimes in which they ailed a very prudent part, as it was attended with no danger or inconveniency. This ordeal was performed in this manner: A piece of barley-bread, and a piece of cheefe, were laid upon the altar, over which a pried pronounced certain conjurations, and prayed with great fervency, that if the perfon accufed was guilty, God would fend his angel Gabriel to fiop his throat, that he might not be able to fwallowthat bread and cheefe. Thefe prayers being ended, the culprit approached the altar, took up the bread and cheefe, and began to eat it. If he fwallowed freely, he was declared innocent; but if it duck in his throat, and he could not fwallow, (which we may prefume feldcm or never happened), he was pronounced guilty.” There were befides thefe a variety of other ordeals praftifed in Chridian countries, many of which retain the fame names as among Pagans, and differ only in the mode of execution. In all nations of Chriftians where thofe trials were ufed, we find the clergy enga¬ ged in them. Indeed, in England, fo late as King John’s time, we find grants to the hifhops and clergy to ufe the judicium ferri, aqux, el ignis. And, both in England and Sweden, the clergy prefided at this trial, and it was only performed in the churches or in other confecrated ground : for which' Stiernhook gives the reafon, Non defuit illis opera et laboris pretium ; femper enim ab ejufmodi judicio aliquid lucri facerdotibus obvenie- bat. But, to give it its due praife, we find the canon law very early declaring againd trial by ordeal, or vulgaris purgatio> as being the fabric of the devil, ■cum Jit contra praceptum Domini, Non tentabis Dominum Deum luum. Upon this authority, though the canons themfelves were of no validity in England, it was thought proper (as had been done in Denmark above a century before) to difufe and abolilh this trial entire¬ ly in our courts of judice, by an a£l of parliament in 3 Hen. III. according to Sir Edward Coke, or rather by an order of the king in council. It may dill perhaps be a pcjulatum with fome of our readers how the effeds of thefe trials were evaded, and how it was poffible to appear to do, what we know could not be really done, without material injury to the perfons concerned : and here we find the fubjed fo well handled by the learned hidorian whom we have already quoted, as far as concerns the ordeals in ancient Britain, which mutatis mutandis will anfwer for others, that we fhall finilh the article, which has al¬ ready extended we fear to too great a length, in his words : “ If we fuppofe that few or none efcaped con- vidion who expofed themfelves to thofe fiery trials, we fhall be very much midaken. For the hidories of thofe times contain innumerable examples of perfons plunging their naked arms into boiling water, handling o R D red-hot balls of iron, and walking upon burnin Odeal, ploughfhares, without receiving the lead injury. Many , <-)l^fc~r- , learned men have been much puzzled to account for this, and difpofed to think that Providence graciouf- ly interpofed, in a miraculous manner, for the prefer- vation of injured innocence. But if we examine every circumdance of thofe fiery ordeals with due attention, we fhall fee fufficient reafon to fufped that the whole was a grofs impofition on the credulity of mankind. The accufed perfon was committed wholly to the pried who was to perform the ceremony three days before the trial, in which he had time enough to bar¬ gain with him for his deliverance, and give him in- druflions how to aeff his part. On the day of trial, no perfon was permitted to enter the church but the pried and the accufed till after the iron was heated, when twelve friends of the accufer, and twelve of the accufed, and no more, were admitted, and ranged along the wall on each fide of the church, atarefpedl- ful didance. After the iron was taken out of the fire, feveral prayers were faid ; the accufed drank a cup of holy water, and fprinkled his hand with it, which might take a confiderable time, if the pried was indul¬ gent. The fpace of nine feet was meafursd by the accufed himfelf with his own feet, and he would pro¬ bably give but fcanty meafure. He was obliged only to touch one of the marks with the toe of his right foot, and allowed to dretch the other foot as far to¬ wards the other mark as he could, fo that the convey¬ ance was almod indantaneous. His hand was not im¬ mediately examined, but wrapped in a cloth prepared for that purpafe three days. May we not then, from all thefe precautions, fufpe£l that thefe prieds were in poffeffion of fome fecret that fecurcd the hand from the impreffions of fuch a momentary touch of hot iron, or removed all appearances of thefe impreflions in three days ; and that they made ufe of this fecret when they faw reafon ? Such readers as are curious in matters of this kind may find two different diredlions for making ointments that will have this effedl, in the work here quoted f. What greatly ftrengthens thefe Du Gang;, fufpicions is, that we meet with no example of any t. 3. champion of the church who fuffered the lead injury P’ 39?* from the touch of hot iron in this ordeal ; but when any one was fo fool-hardy as to appeal to it, or to that of hot water, with a view to deprive the church of any of her poffeffions, he never failed to burn his fingers, and lofe his caufe.” ORDER, in archite&ure, is a fydem of the feveral members, ornaments, and proportions of columns and piladers; or a regular arrangement of the projedling parts of a building, efpecially the column, fo as to form one beautiful whole. See Architecture, Chap. I. Part 1. page 234, &c. Order is alio ufed for a divifion or clafs of any thing: thus the tribe of animals called birds, is fubdi- vided into fix orders. See Ornithology, Zoology, &c. Order, in rhetoric, is the placing of each word and member of a fentence in fuch a manner, as will mod contribute to the force, beauty, or evidence of the whole ; according to the genius and cudom of different languages. With reg-ard to order, we may obferve in general, that, in Englifh, the nearer we keep to the natural or grammatical order, it is gene. 8 ' rally [ 470 1 o R D [ 48° j O R D Order, rally the heft; but in Latin, we are to follow the nfe 'J of the heft writers ; a joint regard being always had to the judgment of the ear, and the perfpicuity of the fenfe, in both languages. Order is alfo ufed for a clafs or divifion of the members of the body of a ftate ; with regard to af- femblies, precedency, &c. In this fenfe, order is a hind of dignity, which, under the lame name, is common to feveial perfons ; and which, of itfelf, does^not give them any parti¬ cular public authority, but only rank, and a capacity of arriving at honours and employments. To abridge this definition, order may be faid to be a dignity attended with an aptitude for public employ. By which it is diftinguifhed from an office, which is the exercife of a public truft. In this fenfe, nobility is an order, &c. The cle- ricate is alfo an order, &c. Order is alfo the title of certain ancient books, containing the divine office, with the order and man¬ ner of its performance. Roman order is that wherein are laid down the ce¬ remonies which obtain in the Romiffi church. See Ri¬ tual. Order, in botany, is a name given to a fubdivifion of plants in the Linnasan fyftem. See Botany, p. 431. &c. Orders, by way of eminency, or holy Orders, de¬ note a charadter peculiar to ecclefiaftics, whereby they are fet apart for the miniftry. See Ordination. This the Romanifts make their fixth facrament. In no reformed church are there more than three or¬ ders ; viz. bifhops, priefts, and deacons. In the Ro¬ miffi church there are feven, exclufive of the epifco- pste : all which the council of Trent enjoins to be re¬ ceived, and believed, on pain of anathema. They are diftinguiffied into petty, or fecular orders; and major, or facred orders. Orders, the petty, or minor, are four ; viz. thofe of doorkeeper, exorcill, reader, and acolyth. 1 hofe in petty orders may marry vrithout any dif- penfationin effeft, the petty orders are looked on as little other than formalities, and as degrees necef fary to arrive at the higher orders. Yet the council of Trent is very ferious about them : enjoins that none be admitted into them without underftanding Latin ; and recommends it to the bilhops, to obferve the intervals of conferring them, that the perfons may have a fufficienctime to e.xercife the fun&ion of each order : i ut it leaves the biffiops a power of difpenfing with thofe rules ; fo that the four orders are ufually conferred the fame day, and only make the firft part of the ceremony of ordination. 1 he Greeks difavow thefe petty orders, and pafs immediately to the fubdiaconate ; and the reformed to the diaconate. ri heir firft rife Fleury dates in the time of the em¬ peror Juftinian. There is no call nor benefice requi¬ red for the four petty orders ; and even a baftard may enjoy them without any difpenfation ; nor does a fe- cond marriage difqualify. Orders, facred, or major, we have already obferved, are three: viz. thofe of deacon, prieft, and biffiop. The council of Brent retrieving the ancient difei- pline, forbids any perfon being admitted to the major N°2f2. orders, unlefs he be in peaceable poffeffion of a bene- Order. free fufficient for a decent fubfiftence ; allowing no or-1 v— dinations on patrimonies or penfions; except where the biffiop judges it for the fervice of the church. A perfon is faid to be promoted to orders per fat- turn, when he has not before pafled the inferior or¬ ders. The council of Conftantinople forbids any bi- fhop being ordained without paffing all the degrees; yet church-hiftory furniffies us with inftances of bi¬ ffiops confecrated, without having palled the order of prieft hood ; and Panormus ftill thinks fuch an ordina¬ tion valid. Military Orders, are companies of knights, infti- tuted by kings and princes, either for defence of the faith, or to confer marks of honour, and make diftinc- tions among their fubjedfs. Religious Orders, are congregations or focieties of monaftics, living under the fame fuperior, in the fame manner, and wearing the fame habit.—Religious or¬ ders maybe reduced to five kinds; viz. monks, ca¬ nons, knights, mendicants, and regular clerks. See Monk, Canon, &c. Father Mabillon proves, that till the ninth cen¬ tury, almoft all the monafteries in Europe followed the rule of St Benedidl; and that the diftinilion of orders did not commence till upon the reunion of fe- veral monafteries into one congregation : that St O- do, abbot of Cluny, firft began this reunion, bring¬ ing feveral houfes under the dependence of Cluny : that, a little afterwards, in the nth century, the Ca- maldulians arofe; then, by degrees, the congregation of Valiombrofa ; the Ciltercians, Carthufians, Augu- ftines ; and at laft, in the 13th century, the Mendi¬ cants. He adds, that Lupus Servatus, abbot of Fer- rieres, in the ninth century, is the firft that feems to diftinguiffi the order of St Benedict from the reft, and to fpeak of it as a particular order. White Order denotes the order of regular canons of St Auguftine. See Augustines. Black Order denoted the order of Benedictins. Thefe names were firft uiven thefe two orders from the colour of their habit ; but are difufed fince the inftitution of feveral other orders, v/ho wear the fame colours. Grey Order was the ancient name of the Cister¬ cians ; but fince the change of the habit, the name fuits them no more. Orders, religious military, are thofe inftituted in defence of the faith, and privileged to lay mafs; and who are prohibited marriage, &c. Of this kind are the knights of Malta, or of St John of Jerufalem. Such alfo wete the knights Tem¬ plars, the knights of Calatrava, knights of St Laza¬ rus, Teutonic knights, &c. See Malta, Templar, &c. Father Putignani accounts thofe military orders where marriage is not allowed, real religious orders. Papebroch fays, it is in vain to fearch for military orders before the 1 2th century. Orders, in a military fenfe, all that is lawfully commanded by fuperior officers. Orders are given out every day, whether in camp, garrifon, or on a march, by the commanding officer; which orders are after¬ wards given to every officer in writing by their refpec- tive ferjeants. ORDINAL, 7 O R D r 48 Ordinal li Ordinary. ORDINAL, a book containing the order or man¬ ner of performing divine fervice. See Ritual. Ordinal Numbers, thofe which exprefs order ; as I ft, 2d, 3d, &c. ORDINANCE, or Ordonnance, a law, ftatute, or command of a fovereign or fuperior : thus the adts of parliament are fometimes termed ordinances of par¬ liament, as in the parliament-rolls. Though in fome cafes wc find a difference made between the two ; or¬ dinances being only temporary things, by way of pro¬ hibition ; and capable of being altered by the com¬ mons alone : whereas an aft is a perpetual law, and cannot be altered but by king, lords, and com- mons. Coke afferts, that an ordinance of parliament dif¬ fers from an aft, as the latter can only be made by the king, and the threefold confent of the eftates ; whereas the former may be made by one or two of them. Ordinance of the Foreft, is a ftatute made in the 34th year of Henry I. relating to foreft-matters. In the French jurifprudence, ordonnances are fuch laws as afe eftabli'ihed by the king’s authority alone. All ordonnances begin with, d tons prefens & a venir fcilut. ORDINARY, in general, fignifiescommon, ufual: thus, an ambaffador or envoy in ordinary, is one fent to refide ftatedly, and for a number of years, in the court of fome foreign prince or ftate, in order to keep up a good underftanding, and watch over the intereft of his own nation.—This term is alio applied to feve- ral officers in the king’s houfehold, who attend on com¬ mon occafions. Thus we fay, phyfician in ordinary, &c. Ordinary, in naval language, denotes the eftablifh- ment of the perfons employed by government to take charge of the (hips of war, which are laid up in the feveral harbours adjacent to the royal dock-yards. Thefe are principally compofed of the warrant-officers of the faid ihips, as the gunner, boatfwain, carpenter, deputy-purfer, and cook, and three fervants. There is befides a crew of labourers inrolled in the lift of the or¬ dinary, who pafs from (hip to (hip occafionally,to pump, moor, remove, or clean them, whenever it is ne- ceffary. The term ordinary is alfo applied fometimes to the fnips themfelves : it is likewife ufed to diftinguiih the inferior fulors from the moil expert and diligent. The latter are rated able on the navy books, and have l 1. 4 s. per month*; whereas thofe who are rated or¬ dinary have only 19 s. per month. Ordinary, in common or canon law, means one who has ordinary or immediate jurifdiftion in matters ecclefiaftical, in any placg. In this fenfe archdescons are ordinaries, but the appellation is moft frequently applied to the biihop of the diocefe, who has of courfc the ordinary ecclefiaftical jurifdiftion, and the col¬ lation to benefices within fuch diocefe. I here are fome chapels, chapters, abbeys, &c. exempted from the jurifdiftion of the ordinary. The archbiihop is ordinary of the whole province, to viiit, and receive appeals from the inferior judicatures. The Romifh writers on canon la w call the pope by way of emi¬ nence ordinary of ordinaries, fince by the Lattran council he has ufurped the right of collating, by pro- Vol. XII1. Fart II. i ] , O R D bation, to all benefices; in exclufion of the common Ordinary collators. , . Ordina- Ordinary of j4JJi%es ana Seffionsj was a deputy ot tion^ the biffiop of the diocefe, anciently appointed to give y—J malefaftors their neck-verfes, and judge whether they read or not; alfo to perform divine fervice for them, and affift in preparing them for death. So the Ordinary of Newgate, is one who is attendant in ordinary upon the condemned malefaftors m that prifon, to prepare them for death ; and he records the behaviour of fuch perfons. Ordinary, or Honourable Ordinary, in heraldry, a denomination given to certain charges properly be¬ longing to that art. See Heraldry, Chap. III. feft. i. p 445. &c. ORDINATES, in geometry and conics, are lines drawn from any point of the circumference of an el- lipfis or other conic feft ion, perpendicularly acrofs the axis, to the other fide. See Conic-Sections. ORDINATION, the aft of conferring holy or¬ ders, or of initiating a perfon into the pnefthood by prayer and the laying on of hands. Ordination has always been elleemed the principal prerogative of biftiops, and they ftill retain the func¬ tion as a mark of fpiritual fovereignty in their dio¬ cefe. Without ordination, no perfon can receive any benefice, parfonage, vicarage, &c. A perfon muft be 23 years of age, or near it, before he can be or¬ dained deacon, or have any (hare in the miniftry ; and full 24 before he can be ordained pneft, and by that means be permitted to adminifter the holy communion. A bifiiop, on the ordination of clergymen, is to examine them in the prefence of the minifters, who, in the ordination of priefts, but not of deacons, affift him at the impofition of hands ; but this is only done as a mark «f affent, not becaufe it is thought neceffary. In cafe any crime, as drunkennefs, perjury, forgery,_ &c. be alleged again ft any one. that is to be ordained, either prieft or deacon, thebiftiop ought to defil! from ordain¬ ing him. The perfon to be ordained is to bring a teftimonial of his life and doftrine to the biftiop, and to give account of his faith in Latin ; and both priefts and deacons are obliged to fubferibe the 39 articles. The ordination of biffiops is mote.properly and more commonly called confecration. In the ancient difeipline there was no fuch thing as a vague and abfolute ordination ; but every one was to have a church, whereof he was to be ordained clerk, or prieft. In the twelfth century they grew more remifs, and ordained without any title or benefice. The council of Trent reftored the ancient difeipline, and appointed that none fhould be ordained but tbofe who were provided of a benefice fufficient to fubfift them. Which praftice ftill obtains in England. The council of Rome in 744, orders, that no ordi¬ nations (hall be held except on the firft, fourth, fe- venth, and tenth months. In England, by can. 31. or¬ dination-days are the four Sundays immediately follow¬ ing the Ember-weeks; being the ftcond Sunday in Lent, Trinity-Sunday, and the Sundays following the firft Wednefday after September the 14th, and Decem¬ ber the 13th. Thefe are the dated times; but ordina¬ tions may take place at any other time, according to the diferetion of the bifirop or circumftances oi the cafe. Pope Alexander II. condemns ordination per faltum, 3 r as O R D 'Ordnance., as they call it; /. e. the leaping to a fuperior order v without paifing threugh the inferior. Ordination is one of the faerameats of the church of Rome. . In eftablifhment of Scotland, where there are no bifhops, the power of ordination is lodged in the prefhytery, and by the Independents in the fuffrage of toe people. See Episcopacy, Presbyterians, and Independents. ORDNANCE, a general name for all forts of great guns ufed in war. See Gunnery. [ 482 ] O R D . Bor 'lnS Okdnancf. Till within thefe 20 years, iron ordnance were call with a cylindrical cavity, near¬ ly of the dinoenfion of the caliber of the piece, which was afterwards enlarged to the proper caliber by means of ileel-cutters fixed into the dog-head of a bonng- bar-iron. Three fide-cutters equidiftant were requifite to preferee the caliber ftraight and cylindrical ; and a imgle cutter wes ufed at the end of the bar to fmooth toe breech, of the piece. In boring ordnance caft hol- ow, the piece was fixed upon a carriage that could be moved backwards and forwards in a direeb lice with the centre of a water-wheel; in this centre was fixed the boring bar, of a iufficient length to reach up to the breech of the piece, or more properly to the fur¬ ther end of the caliber. The carriage with the piece being crawn backwards from the centre of the water¬ wheel to introduce the boring and fimfhing bars and cutters, it is then prefTed forwards upon this bar by weans of levers, weights, &c. and the water-wheel being kt agoing, the bar and fullers are turned round and clean out and fmooth the caliber to its proper di- menhons. r r Experience at laft pointed out many inconveniences anting from the method of catling guns and widening the calibers by thefe boring bars. For the douv of non or the hollow gun, being, at calling, in contaa with the core that made the caliber withinTide, *.m with the mould without-fide, began to confolidate towards thefe fuks in the fir It place, fooner than in the m ermediatc fpace, where of courfe the contradion of the iron takes place ; by which means, all guns call hollow became more or lefs fpongy where they ought to have been moll compaft ; and numherlefs cavifies a o were created round the cores, from llagnated air generated in them, which were too deep to be cut out by the coring. Ml derr rtho'^h is publifired under no inch conclufion. Pie ^^in^ bee” already treated by v^viu ana Virfrii." Mamlru*, and in his /fdverfaria to fome Chriftian writer lu, l •. . . ”” . Jl- '-(j bcahger, the father, to Quintilius Varus But th ^ ' h ^ U \US been afcnbed to Virgil» and by and though it has been much mutilated K*, t‘ tho,18h. lt ™ Ws (clear and methodical than Virgil, hand. ^ mUCh ‘t certainly was penned by a mafterly and truly poetkal low# which might beheartfa tlufufand'1 ho0^* and St Jerome mentions one with 12 pair ofbel- at the Mount ff ohves ^ ^ ^ } and ail0ther at Walem, which migPht be heard which th^Je^'^mad^o^initrunieii^of mulk ifdK ^ ^ defended by an aPPeal to the ufe in us, as was averted by many well meanin g men rl ^ Wlth m"ch reafon : for were the criminal U would tmqueftionably have'been eauad " f 1 f CeTntU^’ and as ^ is m thought by fome in this, ever, a&ed wifely in avoidint thT ufe of t{ v u" r12 JeW8‘ The ^ri^m in Aquinas's time, how- «, the ol them, ,t by fo doing they »ouid ha,e given offonco to their weaken itli fiipt o R G r 487 ] O R G From hrnce it hfs rcafonally leen cohdadej, parti- n° 19. above referred to, feveral pafTages of the ar- eularly by the learned Gregory %^that they were not tide Music, heginningat p. 492. We need fcarcely Organ. Sham ufed in churches in his time. Mr Wharton hr.s alfo refer to the life of Handel,1 which all our readers who obferved that Marinus Sanutus (who flourifbed A. D. are fond of mufic of any kind, particularly facred, 1290) firft introduced wind-organs into churches; L “ ' ' ” ^ ’ from this circumltance he derived the name ’i&r the name for organ in the Italian language. About this fame time Durandus in his fpeaks of them as generally received in the church; and he, in Mr Gregory’s opinion, is the firft author who takes notice of it. 1 hefe authorities are ftrong, and the opinions founded on them by the learned render them ftill more convincing: it appears, however, from the teftimony of Gervas the monk of Canterbury, who fiourifhed A. D. 1 200, that organs were introduced upwards of 100 years even before that time ; for in Lis defcription of Lanfranc’s church, as it was before the fire in 11 74, he has thefe words, “ Crux aujlra- Ihfupra fornicem organa gejlare folebal” We do not fay that this invalidates the reafoning of the learned Bingham; of that our readers are to judge, and in forming their judgments they ill be determined by the credit of the teftimonies which are here oppofed to each other. If we fuppofe that of Gervas the ftrong eft, and in oppcfition to the orher conclude from it, that organs were introduced into England long before the 13th century, it will give iome countenance to an opinion which prevails pretty generally, viz. that in Italy, Germany, and England, they became frequent about the 10th century. See Music, n° 19. But however we are diipofed to determine this Blat¬ ter (which is in itfelf but of little confequence), it is certain that the ufe of the organ was very common in the latter ages of the church, and the propriety of it was nndifputed. In the lilt century, however, during the civil wars, organs were remo¬ ved from the churches in England; and fo gene¬ rally reprobated, that, at the Reftoration, there could fcarce be found either organifts, organ builders, or fingers(n). The organs in Germany (fays Dr Bnruey) in magni¬ tude, and the organifts in abilities, feem unrivalled in any other part of Europe, particularly in the ufe of pedals. In Marpurg's Elfiiys, vol. iii. there is a mi¬ nute account of a variety of organs in Germany ; of all which the longeft pipe of the manuals is 16 feet long, and of the pedals 32. One of the largeft or¬ gans, in Germany, but which Marpurg has omitted in his lift, is at Gorliz in Upper Lufatia. it would be to no purpofe to enlarge our article with a more minute account of the ftate of organic muiic in dif¬ ferent parts of the world : in various parts of the ar¬ ticle Music, obfervatious connected with this fubjecd will be found, and to that we muft refer. We may particularly mark, for the perufal of thofe who wilh for further information on this fubjedi, in addition to have undoubtedly perufed. The church-organ confifts of two parts ; the main ho.ty, called the great organ ; and the politive or little organ, which forms a fmall cafe or buffet, commonly placed before the great organ. The fize of an organ is generally exprefled by the length of it* largeft pipe: thus they fay, an organ of 8, 16, 32 feet, &c. The organ in the cathedral church at Ulm in Germany is 93 feet high and 28 broad: its largeft pipe is 13 inches diameter, and it has 1 6 pair of bellows. The fevera! parts of the church-organ are as follow. HIK is the found-board: which is coinpufed of two parts, the upper board or cover HHH, and the under board HI, which is much thicker than the other; each of thefe confifts of ftveral planks laid with their edges to each other, and joined very ciofe together. In ».n._ unuer fii.e of the lower board there are made feverai channels, which rum in the dire&ion LL, MM, &c. and are continued as far as there are ftops in the organ, and come almoft to the edge HK. Thefe channels are covered over very ciofe with parchment or leather all the way, except a hole that is commonly at the fore-end next HK, upon which a valve or puff is placed. Thefe channels are called partitions. When this vdve cr flap is ihut, it keeps out the air, and ad¬ mits it when open. On the upper fide of the lower board there are likewife cut feveral broad fquare chan¬ nels, lying crofs the former, but not fo deep as to reach them ; thefe lie in the direftion LN, PQ, &c. To fit thefe channels, there are the fame number of wooden fli 'ers cr regifttrs /,/,/, &c. running the whole length ; and thefe may be drawn out or thruft in at pleafure. The number of thefe is the fame as that of the ftops in the oigan. IKKK is the wind-cheft, which is a fqnare box fitted ciofe to the under fide of the lower board, and made air-tight, fo that no air can get out but what goes through the valves along the partitions. .Ware the valves or puffs which open into the wind-cheft ; they are all inclofed in it, *and may be placed in any part of it, as occafion fhall require. One < of thefe valves, with the fpring that fhuts it, and the wire that opens it, is reprefented by fig. 2. C, 1), E, F, &c. are the keys on which the fingers are placed when the organ is played : thefe keys lie over the horizontal bar of wood W, in which are ftuck an equal number of wire-pins z, z, on which keys are fixed; and the keys move up and down on the bar as on a centre. There is another bar, againft which the keys fall when put down, and which is here mark¬ ed 3 : on this alfo are feveral wires, which go through the keys, to guide them; and on this bar a lift is fa¬ ttened Plate CCCLXvUj/ %. 1. weaker brethren. For though they are highly ornamental, and in fome churches may be produ&ive of irnnd eftebts, yet the ufe of them is far from being effential, and may he eafily difpenfed with g 1 (d) Organs have never yet been ufed b the eftablifhment of Scotland, fince that became Prefbyterian • but the} are ufed in Holland, where that form of church-government alio obtains. Bifhop Horne in a ffrmrr which he preached at the opening of the new organ at Canterbury in 1784, fays that he believes Kme P n tma» diflenters in England have adopted it iu Utah places of worlhjp. L L Sermon, O R G [ 488 j O R G Organ, ftencd to hinder the keys from knocking again ft the vvood. The keys are made to communicate with the valves feveral ways, as we (hall now defcribe. Firft, r, are the key-rollers, moving on the pivots t, t: thefe rollers lie horizontally, one above another, and are of fuch a length as to reach from the valve to the key : «, a, a, are arms or levers fixed to the key-rollers : <&/, w, the valve-wires fixed to the arms a, a, and to the valves V,-and go through the holes h, h, in the bot¬ tom of the wind-cheft: b, b, b, are likevvife arms fixed to the key-rollers: t/, cl, d, the key-wires, fixed to the arms b, b, and to the keys C, D, E. Now, when the end of any one of the keys C, D, E, is put down, it pulls down the arm b, by the wire d, which turns about the roller s with the arm a, that pulls down the wire «ev, which opens the valve that is fhut by the fpring as foon as the preffure is taken off the key. In this con- ftnuftion there muft be a worm-fpring faftened to the key, and to the bar W on the further fide, to keep down the end 5 of the key. Another method of opening the valves is thus : xy, xy, are {lender levers, moveable on the centres 1, 1 ; 5 x, 5 x, are wires going from the further ends of the keys to the ends *• of the levers ; yV, j V, are other wires, reaching from the endsjy of the levers, through the holes h, to the valves V. So that putting down the key C, D, &c. raifes the end 5, which thrufts up the end x of the lever, by the wire yx ; this deprefles the end y of the lever, which pulls down the wire jy V, and opens the valve V. A third way of opening the valves is this : At the end of the key b, is a lever 8, 9, moving in the cen¬ tre 7. This makes, with the key, a compound lever. From the end 9, a wire goes to the valve. Now the putting down the end 6 of the key, raifes the end 8, which deprefles the end 9, ol the lever 8, 9, pul's down the wire, and opens the valve. There is only one of thefe drawn in the fcheme, and but a few of the others, to avoid confufion. R, R, are the rollers, to move the Aiders, by help of the arms r/, r/, which are fixed horizontally in thefe rollers : be, ke, are alfo levers fixed in the rol¬ lers ; le, le, are the handles, which lie horizontally, imd pafs through the holes /they are faftened to the lever be, being moveable about a joint ate. Now, any handle Ip, being drawn out, pulls the end e toward l, which turns about R b, along with the arm c f; and the end f pulls out the Aider f g ; and when p is thruft in, the arm c/likewife thrufts in the Cider tJpon the feveral rows of holes which appear on the top of the upper board, there are fet up an equal number of rows of pipes. The pipes of an organ are of two kinds ; the one has a mouth like a flute, the other with reeds. The firft, called pipes of mutation, Plate confift, (1.) of a foot AABB (fig. 3.), which is a ccclxvii. hollow cone, that receives the wind that is to found the pipe : (2.) To this foot is faftened the body of the pipe BBDD. Between the foot and the body of the pipe is a diaphragm or partition FEF, that his a long but narrow aperture by w’hieh the wind comes out; over this aperture is the mouth BBC, whofe upper lip C, being level, cuts the wind as it coHaes «ut. N* 253. The pipes are of pewter, of lead mixed with a Organ twelfth part of tin, and of wood. Thofe of pewter ^ are always open at their extremities : their diameter is very fmall, and their found very clear and fhrill. Thofe of lead mixed with tin are larger ; the ftrorteft are open, the longeft quite flopped ; thofe of a mean fize are partly flopped, and have befide a little ear on each fide the mouth, to be drawn clofer or fet further afunder, m order to raife or lower the found. The wooden pipes are fquare, and their extremity is flop¬ ped with a valve or tampion of leather. The found of the wooden and leaden pipes is very foft; the large ones flopped are commonly of wood, the fmall ones of lead. The longeft pipes give the graveft found, and the fhorteft the moft acute : their lengths and widths are determined by a fixed proportion to their founds ; and their divifions are regulated by a rule, which is called the diapafon. The longeft has com¬ monly 16 feet; but in very large organs it has 32 feet. The pedal tubes are always open, though made of wood and of lead. Whatever note any open pipe founds, when its mouth is flopped it will found an oc¬ tave lower ; and a pipe of twice its capacity will like- wife found »n odlave lower. A reed-pipe confifts of a foot AABB (fig. 4.), that carries the wind into the /ballot or reed CD, which is a hollow demi-dylinder, fitted at its extre¬ mity D, into a fort of mould, by a wooden tampion G. The fhallot is covered with a plate of copper KKLL, fitted at its extremity II, into the mould, by the fame wooden tampion. Its other exti'emity KK is at li¬ berty : fo that the air entering the fhallot makes it tremble or fhake againft the reed ; and the longer that part of the tongue IL, which is at liberty, is made, the deeper is the found. The mould II, that ferves to fix the fhallot or reed, the tongue, tampion, &c. ferves alfo to flop the foot of the pipe, and make the wind go out wholly at the reed. Laftly, in the mould is foldered the tube HH, whofe inward open¬ ing is a continuation of that of the reed : the form of this tube is different in different ranks of pipes. The degree of acutenefs or gravity in the found of a reed pipe, depends on the length of the tongue, and that of the pipe CK, taken from the extremity of the fhallot to the extremity of the tube. The quantity or inten¬ tion of the found depends on the width of the reed, the tongue, and the tube ; as alfo on the thicknefs of the tongue, the figure of the tube, and the quantity of wind. Todiverfify the founds of the pipes, a valve is added to the port-vent, which makes the wind go out in fits or fhakes. In fig. 1. X reprefents a flute- pipe of wood, Z a flute-pipe of metal, Y a trumpet- pipe of metal. The pipes, to prevent them from fall¬ ing, pafs through holes made in boards, placed upon the upper board. The pipes are made to communicate with the wind- cheft in the following manner. There are holes bored that go through the upper and lower boards, and throtigh the Aider (when it is drawn out), into the partition below; fo that any pipes placed upon thofe holes will then communicate with the partition, which by its valve communicates with the wind-cheft. But when the Aider is thruft in, its holes do not anfwer to thofe in the upper and lower boards; therefore, the com- Plate CCCLXV1I. O R G ■ [ 480 ] O R G communication is flopped, fo that no wind can get to the pipe. To every larpe organ there mufl be at lead two pair of bellows, which are marked in fig. 1. by TU, TU. O, O, are the handles, moving upon the axis n », n n. Each of thefe bellows confid of two boards, the lowed of which is immoveable ; and in this there is a valve r, opening inwards, and'a tube leading to it, called the conveying tube. There is alfo a hole in this under board, from which a tube leads to the port- vent, which is a fquare tube marked 4, riling upward, and inferted into the under fide of the wynd-chefl at 2. In the tube leading to the port-vent, there is a valve that opens towards the port-vent, and fuffers the air to go up the port vent, but not to return. Now the handle O being pulled down, raifes the upper board T, and the air enters through the valve r ; and when the handle is let go, the weight of the upper board, which carries three or four pound to every fquare foot, continually defcending, drives the air through the port-vent to the found-board : and as the bellows work alternately, one pair is conilantly de¬ fcending, which eccafions a continual blafl through the port-vent. In chamber-organs there is but one pair of bellows; but they are formed of three boards, in the manner of a fmith’s bellows, and fo have a con¬ tinual blaft. All the internal ftrudlure of the organ is concealed from the fight by the front of the inllru- ment, which Hands upon the part between the num¬ bers 3 and 6 (fig. 1.) In every organ the number of partitions LL, MM, See. there are in the found-board (fig. 1.) that of the valves VV, that of the rollers s s, or of the levers xy or 8 9 and their wires, and that of the keys ABC, &c. mull be always equal. Large organs have com¬ monly four or five fets of keys, befide thofe that be¬ long to the pedals or large pipes, the Hops to which are played by the feet ; faid to be the invention of Bernhard, a German, about the year 1400. Thefe command certain pipes, which, to increafe the har¬ mony, are turned below the diapafon. The keys of an organ are ufually divided into four odlaves; which are, the firft fub odlave, fecoud fub-odlave, middle oc¬ tave, and firft odtave. Each odlave is divided into 12 flops or frets, of which feven are black and five white ; the former mark the natural notes, and the latter the artificial notes, that is, flats and fharps. The number of keys, therefore, when there are four oftaves, muft be 48. Some organifts add one or more flops to the firft; and fecond fub-odlaves. The pedals have two or three odlaves, at the option of the organift ; fo that the number of flops is indeterminate. The keys are placed between GG (fig. i.), but the fcheme could not‘contain them all. There are alfo as many handles /, /, &c. rollers RR, &c. Aiders ft f, &c. as there are flops upon the organ ; and it mull be obferved, that between the Aiders /, /, &c. there are as many Aiders on the right hand, and the fame number of handles and rollers, and other rows of pipes placed between LN, PQ_j which could not be exprefl'ed in the figure. The leaft pipes and partitions are placed toward the middle of the organ, and the greateft on the outfide. The flops of an organ have various denominations, ac¬ cording to the founds they are to produce : fume of Vol.XUI. Part II. which are diapafon, principal, fifteenth, twelfth, tearce, cornet, trumpet, French horn, vox humana, flute, baf- foon, cremona, &c. I he foreign organs, efpeciaily thofe of Germany, have many more : particularly that in the abbey church of Weingarten, a town in the up¬ per Palatine, which has 66 flops, and contains no fewer than 6666 pipes. The organ at Haerlem is faid to have 60 flops, many of them but little known to the Eng¬ lish workmen, and diftinguilhed by names that exprefs the found which they produce. W hen this magnificent inftrument is played, the handle O of the bellows is firft put down, which raifes the upper board T, and gives room for the air to en¬ ter by the valve r. Then the other handle O is put down : in the mean time the board T, belonging to the firft handle, defcending, and (hutting the valve r, drives the air through the other valve, up the port- vent, and into the wind-cheft. Then drawing out any handle, as that of the flute-flop/)/, which draws out the Aider fg, all the pipes in the fet LN are ready to play, as foon as the keys C, D, E, See. are put down: therefore, if the key D be put down, it opens the cor- refponding valve m V, through which the air enters into the pipe X, and makes it found. In the fame manner any other pipe in the fet LN, will found when its key is put down ; but no pipe, in any other fet, will found till the Aider be drawn out by its corre- fponding handle. Among the modern improvements of the organ, the moft remarkable are the fwell and the tremblant : th« former, invented by an Englilh artirt, confilts in a number of pipes placed in a remote part of the inftru¬ ment, and inclofed in a kind of box, which, being gradually opened by the preflure of the foot, increafes the found as the wind does the found of a peal of bells, or fupprefies it in like manner by the contrary adlion. The tremblant is a contrivance by means of a valve in the port-vent or paffage from the wind- cheft, to check the wind, and admit it only by ftarts ; fo that the notes feem to Hammer, and the whole in¬ ftrument to fob, in a manner very offcnfive to the ear. There is a tremblant in the organ at the German chapel in the Savoy. See Hawkin’s Hijiory of Mujtc, and Burney. Hydraulic Orgjn, denotes a mufical machine that plays by water inftead of wind. Of thefe there are feveral in Italy, in the grottos of vineyards. Cte- febes of Alexandria, who lived in the time of Ptole¬ my Euergetes, is faid to have invented organs that played by comprefling the air with water, as is Hill pra6lifed. Archimedes and Vitruvius have left us de- feriptions of the hydraulic organ. In the cabinet of Queen Chriftina is a beautiful and large medallion of Valentinian, on the reverfe whereof is feen one of thefe hydraulic organs ; with two men* one on the right, the other on the left, feeming to pump the water which plays it, and to Men to its found. It has pnly. eight pipes, placed on a round pedeftal. The infeription is placea spetri, if it be not wrong copied, which we fufpedt to be the cafe. ORGASM cpycKx/to;, denoting violence or turgef- cency; formed from opyaa, turgeo, “ I fwell,” an ec- ftacy or impetuous defire of coition, occafioned by a turgefcency of the feminal vefiels, which are no longer able to reftrain their contents. The ancients alfo ex- 3 Q_ tend o I! I [ 490 ] O R I Oi";ia tend orgr.fm to the other humours, and even excre- 3ribafus men‘:8’ 'v*1'c*5 being accumulated, and coming to fer- , ment, demand excretion. Quincy ufes orgsfm for an impetuous or too quick motion of the blood orfpirits; whereby the mufcles are diftended with an uncommon force. ORG1A, fends end facrifices in honour of Bacchus, held every third year, and chiefly celebrated by wild diflracbed women, called Bacchx. The chief fokm- nities wTere performed in the night, to conceal, per¬ haps, their (blocking impurities ; and a mountain was generally chofcn as the place of celebration. They were inflituted by Orpheus ; and from him are fome- tfmes called Orphica. Authors are not agreed as to the derivation of the word ; but if we confider the frantic proceedings of the Bacchanalians, ’’py*, furor, bids fair for the true etymology. See Bacchanalia. Orgia, according to Serving, was a common name for all kinds of facrifices among the Greeks, as cere- montx' was amongft the Romans. ORGUES, in the military art, are thick long pieces of wood, pointed at one end, and (hod with iron, clear one of another; hanging each by a parti¬ cular rope or cord, over the gateway of a ftrong place, perpendicularly, to be let fall in cafe of the ap¬ proach of an enemy. Orgues are preferable to.herfes, or portcullices, he- caufe thefe may be either broke by a petard, or they may be flopped in theib falling down : but a petard is ufelefs againil an orgue ■; for if it break one or two of the pieces,” they immediately fall down again and fill up the vacancy ; or if they flop one or two of the pieces from falling, it is no hinderance to the reft ; for being all feparate, they have no dependence upon one another. Orgues, is alio ufed for a machine compofed of feveral ! arquebufs or mufket barrels bound together, by means whereof feveral explofions are made at the fame time. It is ufed to defend breaches and other places attacked. ORGYA, ofyvia} an ancient Grecian meafure con¬ taining fix feet. ORIBASIA, in botany : A genus of the tnonogy- nia order, belong to the pentandria clafs of plants ; and in the natural method ranking under the 47th or¬ der, Siellatx. The corolla is fmall, tubulated, and monopetalous. The pericarpium is a globular berry, grooved longitudinally ; is quinquelocular, and contains one feed. Of tiiis there are fix fpecies, ail natives of the warmer parts of America, viz. 1. Officinalis: the natives of Cuuxia make infufions of the leaves, and give them in cafes of fpafmodic afthma. 2. Kacemofa. 3. Violaeea. 4. Lutea. 5. Paniculata. 6. Longi- flora. r{ he habit of all thefe plants refembles thofe cf Pfychotria. ORIBaSUS, a celebrated phyfician greatly efteem- cd by the emperor Julian, in whole reign he flounfhed. He abtidged the works of Galen, and of all the moll refpedlable writers on phyfic. This was done at the lequeft of the emperor. He accompanied Ju- Orkhab ban into the eaft, but his fkdl proved ineffefitual in cum- attempting to cure the fatal wound which his bene- fadlor had received. After Julian’s death he fell into the hands of the barbarians ORICHALCUM, or Aurichalcum, a metallic fubftance refembling gold in colour, but very inferior tn value. It was well known to the old Romans, who of¬ ten took advantage of its refemblance to gold: for foroe Sacrilegious charaflers, who could not refill the tempta¬ tion of taking gold from temples and other public places, chofe to conceal their guilt by replacing it with orichai- cum. It was thus that Julius Caefar atted when he rob¬ bed the capitol of 3000 pound weight of gold; in which he was followed by Vitellius, who defpoiled the temples of their gifts and ornaments, and replaced them with this inferior metal. It has been a matter of difpute with philofophers and others, what this metal could be, or how it was procured or made ; it is probable at leafl that it was greatly analogous to our brafs, if not wholly the fame with it. (See Brass.) The value of our hrafs is much lefs than that of gold, and the refemblance of brafs to gold, in colour, is obvious at fiiii. fight. Both brafs and gold, indeed, are fufeep- tule of a variety of fhades of yellow ; and, if very pale brafs be compared with gold, mixed with much copper, fuch as the foreign gokifiniths, efpecially, ufe in their toys, a difparity may. be feen ; but the near* nefs of the refemblance is fuffieiently afeertained in general, from obferving that fubftances gilded with brafs, ©r as it is commonly called Dutch leaf are not eafily diftinguifhed from fuch as are gilded with gold leaf. The Romans were not only in pofTeffion of a me¬ tallic fubftance, called by them orichalcum, and refem¬ bling gold in colour, but they knew alfo the manner of making it, and the materials from which they made it were the very fame from which we make brafs. I here are, indeed, authors of great repute whd think very differently ; and who confider the art of making brafs as an invention wholly modern. Thus hi. Cronftedt does not think it juft to conclude from old coins and other antiquities, that it is evidently proved that the making of brafs was known in the moil ancient times ;* and the authors of the French * Mint?. Encyclopedic affure us, that our brafs is a ve’-y ic-p-nS. " cent invention (a). It appears, however, from Pliny’s Nat. Eli ft. lib. xxxiv. $ 2. and from the concurring teftimony of other writers, that orLhalcum was not a pure or original metal ; but that its bafis was copper, which the Romans changed into orichalcum by means of cadmia, a fpecies of earth which they threw upon the copper, and which it abforbed. It has indeed been contended that the cadmia of Pliny was native arfenic, an opinion which fcarcely merits confut.tion, but which muft appear extremely groundlefs, when we refledt that it is impoifible to make either brafs or cop¬ per from arfenic, and that Pliny exprtfsly calls it afont from which brafs was made. The teftimony of /lm- brofe ( a ) Art. Onchalque—“ The veffels here called braze#, after ancient authors, cannot have been of the ma, terials our preient brafs 13 compofed of; the art of making it is a modern difcovery.,, See Laughton’s Hdh f Ancient Egypt, p. 58. 0 / t * Tor. Vranf >d. i- p. I O It I [ 4g trofe bifhop of Milan, in tlie 41!i centur/, and of Primaiius bif^ p of Adrurnetun', in Africa, in the 6th, and of Ilidorus Li (hop of Seville in the 7 th, nil fecm to confirm Pliny’s account. We may there¬ fore fafely conclude that the Remans knew the me¬ thod of making' brafs by mixing cadmia or calamine with copper ; yet it is probable they were not the in¬ ventors of this art, but that they borrowed it from forne other country. It appears from a variety of tdlimonies that brafs was made in Afia, in a manner very fimiiar to that at Rome ; and a variety of places are mentioned in that extenfive country where it was commonly made; and it is fuppofed by fonie that in India, as well as in other parts of Afia, it was made in the remoteft ages. With refpefl to orichalcum, it is generally fuppofed that there were two forts of it, one fa&itious, the other natural. The faflitious, whether we confider its qualities or compofition, appears to have been the lame with our brafs. As to the natural crlchalcum, there is no impofiibility in fuppofing, that copper ore may be fo intimately blended with an ore of zinc, or of fome other metallic fubflance, that the com¬ pound, when fmelted, may yield a mixed metal of a paler hue than copper, and lefembling the colour of either gold or fiiver. In Du Halde’s hiftory of China, we meet with the following account of the Chinefe white copper. “ The mod extraordinary copper is called de-tong, or white copper : it is white when dug out of the mine, and ftill more white within than with¬ out. It appears by a vail number of experiments made at Peking, chat its colour is owing to no mixture ; 011 the contrary all mixtures diminilh its beauty; for, when it is rightly managed, it looks exactly like fiiver: and w#re there not a necefiity of mixing a little tutenag, or fome fuch metal with it, to foften it and prevent its brittlentfs, it would be fo much the more extia- ordinary, as this fort of copper is perhaps to be met w ith nowhere but in China, and that only in the pro¬ vince of 7~un-nan.*,y Notwithftanding what is here (Tj. find of the colour of this copper being owing to no mixture, it is certain that the Chinefe white copper, as brought to us, is a mixed metal ; fo that the ore from which it is extracted mull confifl of various me¬ tallic fubftances, and from fome fuch ore it is poffible that the natural orichalcum, if ever it exifted, may liave been made. But, notwithftanding that the exilt- ence of natural orichalcum cannot be fhown to be im- poffiblc, yet there is fomc reafon to doubt whether it ever had a real exigence or not. We know of no country in which it is found at prefent ; nor was it anywhere found in the age of Pliny ; nor does he feem to have known the country where it ever had been found. He admits, indeed, its having been formerly dug out of the earth ; but it is remarkable that in the very paflage where he is mentioning by name the countries mod celebrated for the production of different kinds of copper, he only fays in genttal, concerning orichalcum, that it had been found in other countries, without fpecifying any particular country. Plato acknowledges, that ori¬ chalcum w'as a thing only talked of even in his time ; it was nowhere then to be met with, though in the liland of Atlantis it had been formerly extrafled from its mine. The Greeks were in poffefiion of a metallic ? ] OR! fubfiance, called orichalcum, before the foundation of Oiichal- Rome ; for it is mentioned by Homer and by Heiiod, cuni and by both of them in fuch a manner as fhows that q - j[,un1 it was then held in great efieem. Other ancient > —- ^ r- writers have exprefled themfelves in fimiiar terms of commendation ; and it is principally from the circum- ftance of the high reputed value of orichalcum that authors are induced to fuppofe the ancient orichalcum to have been a natural fubftance, and very different from the factitious one in ufe at Rome, and probably in Afia, and which it has been fhown was nothing different from our brafs. But this conclufion cannot be validly drawn from their encomiums upon it ; for at whatever time the method of making it was firft difeovered, both its no¬ velty and fcarcentfs, joined to its utility, would en¬ hance its value ; at leaft there can be no abfurdiiy in fuppofing, that when firfl introduced it was greatly prized, even though it be granted that it poffefled no other properties than fuch as appertain to brafs. Refpediing toe etymology of the word there is great diveriity. of opinions. Thofe who write it aurichalcum think it is coinpofed of the Latin word aurum, “gold,”1 and the Greek “ brafs or copper.” The moll ge¬ neral opinion is, however, that it is compofed of Vf “ a mountain” and alluding perhaps to its being found in mountains or mountainouscountries.Theabove account is chiefly extradled from a paper in the fecon i volume of Memoirs of the Literary and Philofophical Society of Manchefter, written by the prefent bilhop of LandafF, Dr Watfon, and communicated by Df Percival. To this paper then we refer our readers" who dtfire-a more copious account of it. To the above two etymological meanings of the w^ord we fhall fub- jom the following, mentioned by the learned bifhop, and which, in our opinion, is equally well founded, and certainly as ingenious, as the other two. The Hebrew word Or, Aur, fignifies light, fire, flame ; the Latin terms aro “ to burn,” and aurum “gold,” are derived from it, inafmuch as gold refemblej the colour of flame: and hence it is not improbable, that orichalcum may be compofed of an Hebrew and a Greek term, and that it is rightly rendered, fame- coloured copper. In confirmation of this it may be ob- ferved, that the Latin epithet lucidum, and the Greek one are both applied to Orichalcum by the ancients. ORIFICE, the mouth or aperture of a tube, pipe, or other cavity. ORIGANUM, Origany, or Marjoram : A ge¬ nus of the gymnofpermia order, belonging to the di- dynamia clafs of plants; and in the natural method ranking under the qzd order, ^Ferticellata. There is a ftrobilus or cone colliding the calyces together. The principal fpecks are, two hardy perennials and an annual for the open ground, and five perennials for the green-houfe : viz. 1. The vulgare, or wild pot- marjoram ; 2. The herackoticum, or winter fvveet- marjoram. Thtfe are finely feented aromatics, ex¬ cellent for culinary purpofes, particularly for broths, foups, &c. they have likewife merit for medical ufes, and for giving fragrance to ointments ; fo that the plants are proper both for kitchen and phyfie gardens, and may alfo Le employed in the pleafure-ground as plants of variety. 3. The marjorana, or amial fweet- 3 morjoramp o R I [ 492 ] O R I Orient marjoram, is an aromatic of the highell fragrance, is 0rJ' admirable for kitchen ufe, and excellent for nofegays ; ^ . fo is proper both for the kitchen and pleafure garden, but more particularly for the former. It is often called knotted marjoram, from the flowers growing in clofe knotted-like heads. The following moflly affume an underfhrubby growth ; frequently with abiding flalks, if they have flicker here in winter. 4. The diftam- nus, or dittany of Crete. 5. The fipyleum or ori¬ ganum of mount Siplus. 6. The creticum, or Cre¬ tan origany. y. The fmyrnseum, or Smyrna origany. 8. The iEgyptiacum, or Egyptian origany. " All thefe eight fpecies of origanum flower in July and Auguft; the flowers are frnall, monopetalous, rin- gent, univerfally hermaphrodite, and colledted into verticilli round the ftalks ; fucceeded by ripe feed in autumn ; though in this country the annual marjoram and the three green-houfe forts feldom perfedt feed well, unlefs the autumn proves remarkably fine and warm: in default, however, of feed, the propagation of all the perennial forts, both hardy and green-houfe kinds, is eafily effe&ed by flips of the roots, &e. And the feed of the annual fort is imported plentifully from France or Italy by the feed-dealers. ORIENT, a harbour of France, in the province of Bretagne, in the bottom of the bay of St Lewis. Since the year 1720, a handfome town”has been built here, where the Eafl: India company have large ma¬ gazines. 'IheEnglifh attempted to become mafters of it in 1746, but mifcarried. W. Long. a. 22. N. Lat. 47.^45. ORIENTAL Philosophy. See Philosophy. ORIQEN, one of the moft celebrated ecclefiaftical writers, greateil geniufes, and moft learned men of the primitive church, during the third century, was born at Alexandria in the year 185; and was fur- named either from his indefatigable applica¬ tion to ftudy, or from the firmnefs he difcovered amidft the torments he fuffered for the faith. Leonidas his father tiained him at home with great care, and made him apply to the ftudy of the Holy Scriptures from his infancy, in which he made furprifing progrefs. The fon’s inclination and turn fuited exadHy with the father’s defign ; for he purfued his ftudies with a moft extraordinary zeal and ardour: and, being endued with a quick apprehenfion and a ftrong imagination, did not content himfelf with that fenfe which at firft prefented itfelf, but farther endeavoured to dive into myfterious and allegorical explications of the facred books. He would fometimes even puzzle his father, by too much foliciting him for recondite meanings ; which obliged the good man to reprehend him a little, 3 and withal to advife him not to attempt to penetrate Origen. too far in the ftudy of the holy fcrlptures, but to -y— content himfelf with their moft clear, obvious, and natural fenfe. Hence it appears, how early he was feized. with that furor al/ego ficus, as a learned modern calls it, that rage of expounding the fcriptures alle¬ gorically, which grew afterwards to be even a Jiftcm- per, and carried him to excefles which can never be excufed (a). He had afterwards in philofophy Am- monius the celebrated Chriftian philofopher, and St Clement of Alexandria for his mailer in divinity. At 18 years of age he fucceeded that great man in the office of catechift; an important employment, which confifted in teaching divinity, and expounding the fcriptures. Leonidas his father had fullered martyrdom the year before, during the perfecution of Severus in 202 ; and Origen had fhown fuch eagcrnefs to follow his father to martyrdom, that his mother was obliged to hide his clothes to prevent his going abroad. Origen had a great concourfe of auditors who attended his fchool, fome of whom were of the faithful, and the others pa- gans. He confirmed and ilrengthened the firft in their faith, and converted moft of the others ; and there were fuch a number of martyrs amongft his difciples, that it might he faid, that he kept rather a fchool of martyrdom than of divinity. He taught the doeftrines of Chriftianity to the girls and women as well as te the men; and taking in a too literal fenfe what Chrift fays of becoming voluntary eunuchs, caf- trated himfelf, to prevent his deferving or fuffering fcandal. Fie took a voyage to Rome in 211, in the beginning of Caracalla’s reign, and under the pontifi¬ cate of Zepherinus. At his return he publilhed many works, by which he acquired an extraordinary reputa¬ tion, that drew to him a great number of auditors. But D emetrius, bilhop of Alexandria, conceiving a jealoufy of him, endeavoured by various pretences to injure him. At length Origen went to Antioch, whither the emprefs Mammasa had fent for him to hear him difeourfe ©nt he Chriftian religion. He did not how¬ ever ftay long there, but returned to Alexandria, where he continued to teach till the year 228, when he left that city, and travelled into Achaia. In that journey he went into Paleftine, and was ordained by the bifliops of that province at 42 years of age. Hia being ordained by foreign bifnops without the per- miffion of Demetrius, renewed that prelate’s refent- ment againft him ; on which Origen haftily returned to Alexandria, to endeavour to mollify him : but De¬ metrius drove him from thence in 231, and caufed him to be excommunicated, and even depofed in a council held in Egypt. Oiigen then retired to Casfa- tea (^) 18 the firft Chriftian (whole notions on this fubjedl have come down to us) who believed in the reftitution ot all things. This 13 his fixth diftinguiftiing tenet; to which is added this lingular notion, that as Chrift had een cruci re in this world to fave mankind, he is to be crucified in the next to lave the devils. The other o noxious tenets ot Origen are thefe five: viz. r. That in the Trinity the Father is greater than the Son, aiK 1 k ^•°n c aii Ghoft. 2. I he pre-exiftence of fouls, which Qrigen confidered as fent into mor a o les .or tie punifhment of fins committed in a former ftate of being. 3. That the foul of Chrift was uni e ^0 t e worid before the incarnation. 4. That the fun, moon, and ftars, &c. were animated and a lationa ouls. 3. hat after the refurre£bon, all bodies will be of a round figure. It is pro- EccJ Hft vol ^"ft 1C 1 ie0lu£y modern Quakers and other feels is derived from Origeu. See Mojheim O R I [ 49.3 1 O R I Orlgen. rea in Paleftine, wiicre he raifed a celebrated fchool, ^ ‘ and had 8t Gregory Thaumaturgus, and a great number of other perfons who were illuitrious for their virtue and learning, for h?s d'fciples He afterwards travelled to Athens; and then, at the delire of Firmi lianas,ftaidfome time atCsefarea inCappadocia; whence he was invited into Arabia, to convince and bring back to the truth B'eryllus hi fir op of Boftra, who maintained that, the Word had no exigence before his incarnation. Origen had the happinefs to make him fenlible of his miltake ; and fome years after was fent for into Arabia by an alfembly of bilhops, to difpute againlt the Arabians, who maintained that the fouls of the dead remained in a ftate of infenfibility till the general refurrettion. At length the feventh perfecu tion of the Chriftiass bet an in the reign of Decius, and none were ufed with greater feverity than Origen. He fupported with incredible conilancy the dreadful torments which the perfecutors of the Chriflians in¬ vented againlt them ; torments that were the more infupportable, as they were made to continue a long time, and as they took the greateft care to prevent his expiring in the midft of his tortures : but in the midft of the molt excruciating torments, he difeovered an heroic courage, and fuffered nothing to efcape him that was unworthy a difciple of Jefus Chrift. He died at Tyre in 2^4, aged 69. He was the author of a great number of excellent works. The principal of thofe which have been handed down to us are, 1. A Treatife againlt Celfus, of which Spencer has given a good edition in Greek and Latin, with notes : this learned treatife hns been tranflated into French by Elias Bouhereau, a proteflant minifter, born at Rochelle. 2. A great number of Homilies, with Commentaries on the Holy Scriptures. 3. Philocaliat and feveral other treatifes. 4. Fragments of his Hexaples, col¬ lected by father Montfaucon, in two volumes folio. Of all Origen’s books, the lofs of the Hexaples is molt to be regretted. This work was thus named from its containing fix columns ; in the firit of which was the Hebrew text of the Bible ; in the fecond, the fame text in Greek chara&ers ; in the third, the Greek verfion of the Scptuagint; in the fourth, that of Aquila ; in the fifth, that of Symmachus; and in the frxth, Theodofian’s Greek veriion. This admirable work gave the firft hint for our Polyglot Bibles. - 5. The book of Principles; of which we have only an incorredt Latin verfion. In all his writings he dif- covers a furprifing degree of modefty, candour, and humility ; a noble and fublime genius, profound learning, and vaft erudition. His manners were ex¬ tremely pure, and he had a warm zeal for fpreading the truths and morals of the gofpel. Much has been written both for and againft this celebrated father, both by his contemporaries and others: he has indeed fullered great abufe, which he did not deferve, and w hich we lhall not retail; con¬ tenting ourfelves with the following account of his character by7 Dupin, and fome remarks on it by Dr Bibl.Avt. Jortin. “ Origen (fays Dupin) had very quick parts, EccUf. a very ftrong and enlarged imagination ; but he relied tom. 1. tt)0 muci1 on ^e vivacity ot his genius, and often loft himfelf, out of too great earneftnefs to fathom and fubtilife every thing Fie had a very happy inven¬ tion, and a more happy delivery of what he invented; but he had not that exasftnefs in his inventions, nor Origen. that graeefulnefs of delivery, as might be wifhed. He carrie i on his works with fo great eafe, that he is faid to have di&ated to feven or eight perfons at a time ; and he was fo ready in txpnefling himfelf, that he made the greateft part of his homilies extempore : upon which account his ftyle was not very correct or coherent. He had a vaft memory, but often trailed too much to it. He was a perfon of moft profound learning : he particularly ftudied Plato s philofophy, and was indeed too much addicted to it for a Chriitian. He underltood likewife the doctrines of other p dlo- . fophers. He applied himfelf mightily to the itudy of human learning. He was neither ignorant of hiftory nor mythology ; and he had as great a knowledge in all the profane fciences, as thofe who ftudied nothing tlfe. But he particularly excelled in the knowledge of the Hfoly Scriptures, which he learned all by heart; and that he might ntgledt nothing for attaining a right underitanding of the letter thereof, he carefully examined all the verlions oi the Bible, mid compared them all together with the Hebrew text, fubjoining a literal commentary upon the moft difficult pLces He was not very well Ikilled in the Hebrew ; yet he knew enough of it to underftand it, and to obfervs the dif¬ ference of the text and the tranflhtions. Nevertheless, he did not adhere to the literal explication of the Bible, but thought it neceflary, for the faxe of gain¬ ing it credit with the heathens, who delpifed its plain- nefs and fimplicity, and of rendering it more ufeful to the w'orld, to give myftical and allegorical interpreta¬ tions of every thing in itT Dr Jortin tells us, “ That Origen was very learned jort;n*s rs.- and ingenious, and indefatigably induitrious. His^^j, whole life from his early years was fpent in examining, vol.ii, teaching, and explaining the Scriptures ; to which he joined the ftudy of philofophy and of all polite litera¬ ture. He was humble, modeft, and patient under great injuries and cruel treatment, which he received from Chriftians and Pagans : for though he ever had a confiderable number of friends and admirers, on ac¬ count of his amiable qualities and ufeful accompiifh- ments, he was perfecuted and calumniated by men, who had neither his learning nor his virtue, degraded from the order of preffiyters, driven from his home, and excommunicated by one Demetrius bilhop of A- lexandria, who envied him, fays Eufebius, for the re¬ putation which he had gained. His inquifitive genius, and his mixing philofophy with Chriftianity, led him perhaps into fome learned fingulariues and ingenious reveries ; but he was by temper far from dogmatizing in fuch points, from fomenting fchifms, and fetting up himfelf for the head of a party. He lived in times when Chriftians were not 10 ffiackled with fyftems and determinations, as they were afterwards, nor fo much expofed to difingenuous and illiberal objections ; and had more liberty to purlue their inquiries and to fpeak their mind.—He was ever extremely fober and exem¬ plary, practifing what he preached to others ; and he lived and died poor, and deftitute even of common conveniences.”—The moft complete edition of his works is that of Father Delarue, a Benedidtine, in Greek and Latin. The celebrated Montfaucon like¬ wife publilhed, in 2 vols folio, fome remains and frag¬ ments of his Hexabla, He #ri ami even from Great Britain. There is befides anoi her oriole of this fpecies, called the bajlard Baltimore : Its fize is that of the true B d- timore, but it meafures fomewhat lefs in length : the bill is lead-coloured ; the forehead and cheeks black mixed with yellow ; the hind head and nape are olive grey, marked with a few foots of black ; the upoer part of the hack is the fame, but fomewhat dull r ; the lower part of the back, the rump, fore-part of the neck, breaft, belly, fides, thighs, upper and lower tail- coverts, and under the wings, are orange-yellow, but brighteft on, the bread and tail coverts ; the leffer wing-coverts are deep brown; the greater are the fame, tipped with dirty yellowifti white: the quills are brown, bordered on both edges with white ; the two middle tail-feathers are olive, then blackifh, marked at the end with a longitudinal yellowifh (pot; the next on each fide are olive and black, eonfufedly mixed ; and the four cuter ones are of a yellowifh olive : the le.rs and claws are bluiili. They inhabit North Ame¬ rica. 1 here feems to be grtat confufion and uncertainty in the true and baftard Baltimores and their ferhrles; mod likely at hft they may, the whole of them, turn out mere varieties of one (ingle fpecies, all of them perhaps refera’ le to one or other fex of the true Bal¬ timore, in the different ftages of life. It w ould be abfurd, and indeed impofiible, without enlarging the article beyond all bounds, to deferibe each particular variety ; we (hall therefore refer thofe el our readers who wi(h for a more copious account, to Mr Latham’s Synopjts of Birch, where the whole Orlcn. genus is more minutely and more accurately deferibed’“'N' ~ than anv where elft that we know. ORION, in fabulous h.ftory, was the fon of Jupi¬ ter, Neptune, and Mercury. For as thefe gods were vifiting the earth, they entered the houfe of Hyrieus, a native of Tanagra, in Bceotia, under the character of benighted travellers, on account of his being famed for hofpitality to ftrangers. Hyrieus treated them in the bed manner in his privver; and even killed an ox, the only one he had, for their entertainment. At which the gods were fo pleafed, that they offered the old man whatever he would afk ; who letting them know that he defired nothing fo much as a fon, they, to gratify his wifh, caufed the ox’s hide to be brought before them, in which, having depofitel their urine, they bad him keep it under ground for nine months. He then dug for the (kin, and found in it a beautiful child, whom he called Urion ah urina. The name was afterwards changed into Orion by the corruption of one letter, as Ovid obferves : Perdidit antiquum litera prima fonum. Orion foon became confpicuous ; and Diana took him among her attendants, and even be¬ came deeply enamoured of him. His gigantic ftacure, however, difpltafed (Euopion king of Chios, whofe daughter Hero or Merope he requefted in marriage. The king, not willing to deny him openly, promifed to make him his fon-m-law as foon as he delivered his Hand from wild beads. This talk, which (Enopion fuppofed to be impradficable, was foon performed by Orion, wdio eagerly demanded his reward. CEnopion, on pretence of complying, intoxicated his illuftrious gueft, and put out his eyes on the fea (bore, where he bad laid himfelf down to deep. Orion found him- felf blind when he awoke. He went, dire&ed by the found, to a neighbouring forge, where he placed one of the workmen on his back, and by his directions went to a place where the riling fun was feen with the greateft advantage. Here he turned his face towards, the luminary; and, according to report, he immediate¬ ly recovered his eye-fight, and haftened to punifh the perfidious cruelty of CEnopion. Orion was reported to be an excellent workman in iron, and to have fabri¬ cated a fuhterraneous palace for Vulcan. Aurora, whom Venus had infpired with love, car¬ ried him away into the Hand of Delos, that (he.might enjoy his company with greater fecurity ; but Diana, who was jealous of this, deftroyed him with her nr» ro vs. Some fay, that Orion had provoked Diana’s refentment, by offering violence to Opis, one of her female attendants ; or, as others fay, hecaufe he had attempted the virtue of the goddefs htrfelfi Accord¬ ing to Ovid, Orion died of the bite of a fcorpion, which the earth produced to punifti his vanity, in boafting that no animal on earth could conquer him. Some fay that Orion was fon of Neptune and Euryale, and that he had received from his father the privilege and power of walking over the fea without wetting his feet. Others affert, that he wras a fon of Terra, like the reft of the giants. He had married a nymph call ed Sida, before his connexion with the family of OEnopion ; but Sida was the caufe of her own death, by boalling herfelf fairer than Juno. Diodorus fays, that Orion was a celebrated hunter, fuperior to the reft of mankind, by his (Irength and uncommcn ftature. 4 He O R I [ 496 ] O R K Orion. ]^e bmh: the port of Zancle, and fortified the coaft of ' “ Sicily againft the frequent inundations of the fea, by heaping a mound of earth called Pelcrum, on which he built a temple to the gods of the fea. After death Orion was placed in heaven, where one of the conftel- lations ftill bears his name. The conflellation of O- rion w7as placed near the feet of the bull. It was com- pofed of 17 liars in the form of a man holding a-fword ; for which reafon the poets often fpeak of Orion’s fword. As the conftellation of Orion, which riles about the qth day of March, and fets about the 21ft of June, is generally fuppofed to be accompanied at its rifing with great rains and llorms, it has acquired the epithet of aquofus given it by Virgil. Orion was buried in the iiland of Delos ; and the monument which the people of Tanagra in Bceotia Ihowed, as containing his re¬ mains, was nothing but a Cenotaph. The daughters of Orion diftinguifhed chemfelves as much as their fa¬ ther ; and when the oracle had declared that Bceotia fhould not be delivered from a dreadful peftilence be¬ fore twTo of Jupiter’s children were immolated on the altars, they joyfully accepted the offer, and voluntarily facrificed themfelves for the good of their country. Their names were Menippe, and Metioche. They had been carefully educated by Diana ; and Venus and Minerva had made them very rich and valuable pre- fents. The deities of hell.were ftruck at the patrio- tifm of thefe tw'o females ; and inllantly two liars were obferved to arife from the earth, which ftill fmoked with their blood, and they were placed in the heavens in the form of a crown. According to Ovid, their bodies were burned by the Thebans, and from their afhes arofe two perfons, whom the gods foon after changed into conflellations. Orion, in aftronomy, one of the conftellations of the fouthern hemifphere. The word is formed from N3 253. the Greek wfwv,il to make waterthe ancients fup- OriftagnJ pofing that it raifed tempers at its rifing and fetting. II The liars in the confteliation Orion, in Ptolemy’s ca-. °r>rt~ilC^‘ , talogue are 37, in Tycho’s 62, in the Britannic cata-^ ^ logue 80. ORISTAGN1, an ancient town of the ifiand of Sardinia, with an archbifhop’s fee It is pretty large and well fortified ; but thinly inhabited, on account of the unhealthy air : it is feated on the weftern coait, in a bay of theiame name, in li. Long. 8. i;8. N. Lat. 39’5 v ORIX A, a kingdom of Indoftan, lying on the Gulph of Bengal. It is divided from the ancient kingdom of Golconda, by a ridge of mountains, the end of which runs a little way into the Sea. it is fer¬ tile in corn and cattle, and they have feveral good towns and harbours on the coaft ; there are alfo ma- nufadlures of diderent kinds carried on throughout the kingdom. The prince is a Gentoo, who pays to the Great Mogul a tribute to the amount of about 12,0001, yearly. Orixa, in botany : A genus of the monogynia or¬ der, belonging to the tetrandria clafs of plants ; and in the natural method ranking with thofe that are doubtful. The calyx is quadripartite ; the petals are four, plain and lanceolated ; the ftigma globular ; the capfule and feeds unknown. Of this there are two fpecies, viz. 1. The frutefeens ; 2. Japonica, both na¬ tives of Japan. ORKNEY islands, called Orcades by the ancients, certain iflands on the north of Scotland! a), from which they are feparated by a frith 20 miles in length and 20 in breadth. As writing feems to have been unknown in the northern iflands, during thofe periods which the an¬ tiquarian would call the molt curious and important, the (a) The northern ifles of Scotland have been often mentioned by ancient authors, and called by different names from thofe they now go by ; fo that it is fometimes difficult to know which of them are meant. The an¬ cient name, however, of the iflands, which are the fubjeft of this article, has never been difputed. The Ebuda, it is agreed, are the modern Hebrides ; and there is no doubt of the ancient Orcades being the fame with the Orkneys. Of 1 hule, however, we are not fo certain ; and whether it means the Shetland ifles, or Iceland, remains undetermined. Pythias, a Maffilian, pretends to have vifited thefe iflands, and particularly Thule ; but he does not mention the Orcades. xhe geographer Mela, who was cotemporary with the emperor Clau- diuSj is the next writer w ho deferibes the northern iflands. Of the Orkneys he gives a remarkably juft ac¬ count, and fays they were thirty in number, with narrow channels between them j but he is lefs accurate with refpecl to the reft. Pliny the Elder is the third who mentions the northern iflands. He makes the number ot the Orkneys to be forty, and of the Hebrides to be thirty. Solinus, the fuppofed cotemporary with Agricola, is the next after Pliny. In his time, and according to his account, thefe iflands had not a Angle inha¬ bitant, and were overgrown with rufhy grafs. It feems on the whole to be pretty generally allowed, that Julius Agricola, who firfl failed round Britain, difeovered the Orcades till then unknown, and fubdued them*. Claudius was fo far from reducing them (as is aflerted by Jerom in his Chronicle), that Juvenal has thefe lines xn Hadrian’s time; Arma quid ultra Littora Jnvernrc promovimus et modo captas Orcades ^ et minima content os node Britannos. Sat. II. 160. In vain, O Rome, thou doft this conqueft boaft Beyond the Orcades’ ffiort-nighted coaft. Dryden. 1 acitus informs us, that, before the completion of the firft century, the Roman fleets failed round Scotland, and landed in the Orcades to refrefh. * I he Romans, never that we know, vifited thefe ifiands again but once, which was probably after Honorius had defeated the Saxons in the feas of Orkney. O R K [ 4Q7 1 O R K fMtriey* the cliief part of our information refpefting the an- cient ftate of the Orkneys muft be derived from tra¬ dition and conjecture. Their mountainous fituation, and natural jealoufy of ftrangers* obftructed the pro- grefs both of knowledge and religion : for inftead of receiving either from their fouthern neighbours, we are certain that they derived their knowledge of Chriftia- nity from Norway, during the expeditions undertaken by that nation (in the end of the icth or beginning of the nth century) to make fcttlcments in the Ork¬ neys and on the coaft of Caithnefs (a). The beft (becaufe it is in all probability the molt authentic) ac¬ count that we have of this early part of the hiilory of the Orkneys, feems to be in Torfeus. See Tor- F^nus . His hiftory muft, doubtlefs, have been com¬ piled chiefly from tradition, which is far from be¬ ing the fureft mode of information. During the time of Gregory the Great, when by his policy the Piets we're driven from other parts of Scotland, they came to the Orcades as an afylum ; but it does not appear, and is far from being probable, that they received a favourable reception, for many of them migrated to Shetland, and from thence to the oppofite coafts of Norway, A particular hiftory of thefe iflands during thofe early ages would afford little entertainment, be¬ caufe its authenticity is at lea'* doubtful. Thefe iflands were at various times harafled and plundered by ad¬ venturers from Scandinavia ; and the Norwegian princes frequently laid the inhabitants under tribute. We have faid that the Chriftian religion was tranf- ported to the Orkneys from Norway, and that this happened in the beginning of the i ith century. A- bout which time Sigurdis pofiefled the entire dominion of thofe ifles, and for many years exercifed all the powers of a monarch in the north. At the fame time Vol. XIII. Part II. Chriflianity had dawned on'Scandinavia, and had be- Orkney come the eftablifhed religion in the feat of government * in Norway. Its doftrines interwove themfelves with the policy of the nation : its principles, fo nearly in- terefting to human happinefs, made their farther pub¬ lication an object of much moment to the adventurous princes, and gave a new law to their entepriz.es. While the power of thefe principles was ailing with original force upon the minds of the people, and their zeal rendered them ambitious of any exploit, whereby’ they could diffufe their influence ; Oiaus prince of Norway equipped a fqnadron deftined to carry the knowledge of the gofpel to other fhores. On this pious adventure he was accompanied not only by num¬ bers of all ranks, whom, as ufual, a love ©f enterprife invited ; but by many perfons of diftinguifhed know¬ ledge and abilities, men of fincere piety, who had be¬ come particularly well acquainted with the Chriftian do&rines, and entertained a deep fenfe of their infi¬ nite importance. Thefe entered into the fleet, joyful in the profpeef of fpreading the truths which they re¬ vered through yet unenlightened countries ; and the fquadron foon appeared off the Orcades Olaus got Sigurdis on board of his fleet, wuth his fon, and but a few attendants, and, as the heir of Harold, he claim¬ ed all the provinces over which Sigurdis reigned ; and at the fame time he ordered him to renounce and abjure the religion of his fathers, and to embrace Chriftianity. Delay was not permitted ; Chriftianity was forced upon him and his fubjedfs ; and, on the departure of Olaus, he carried, the fon of Sigurdis as an hoftage for what he had engaged; which w'as to give honourable protection to all thofe holy men whomigbt choofe to refide in thofe parts for the purpofe of inftrudting the people in the nature of the Chriflian dodlrines ; for many of the more intelli- 3 R gen£ (a) It has been aflerted, that the Orkneys, as well as the hills of Shetland, were originally peopled from Norway, in the ninth, tenth, or eleventh century. Others again imagine, with as much probability, that the Pifts were the original inhabitants, and call Orkney the ancient kingdom of the Pidhs. Certain lingular houfes, now overgrown with earth, are called Pints houfes; and the Pentland frith (formerly Pightland or PiElland) is fuppofed to retain their name. Claudian’s lines, cited by Mr Camden, prove, that the Pidts, with fome other German colony, particularly the Saxons, were at that time in poffeflion of thefe ifles ; and fo Ninnius exprefsly fays. Many of the prefent inhabitants ufe the Norfe language, which differs but little from the Teutonic or Pidlifh language, and was in general ufe to the laft century ; but except in Foula, where a few words are ftill known by the aged people, it is quite loft. The Englifh tongue, with a Norwe¬ gian accent, is that of thefe iflands; but the appearance of the people, in their manners and genius, evi¬ dently flrow their northern origin. Ninnius, c. 5. puts their arrival at Orkney not lefs than 900 years after the coming of Brutus into Britain, which he fays wan in the time of Eli the Jewiih high-prieft. The an¬ cient furnames are of German original. Some date the firft fettlement of the Pidts here A. M. 4867 ; when, emigrating from their native country, they planted a colony in Orkney, and thence crofiing Pidtland frith, and traverling Caithnefs, Rofs, Murray, Marr, and Angus, fettled in Fife and Lothian ; thence called by our wri'- ters Pialandia Others think they did not fettle here till the time of Reuther king of Scotland, when the Pidts^ joining with a party of the Scots, were repulfed, with Ihe lofs of their king Gethus, and many of the PidH and Scottiih nobility, with great flaughter.: but the invafions of the Britons, at the fame time, conftrained the Pidfsto fly to Orkney, where they chofe for king Gothus their decealed fovereign’s,brother, till they were able to return to Lothian, and drive out the Britons. After this they flourifired here, and were governed by kings of their own. There ftill remains a place called Cunningfgar, the dwelling place of the minifter of Sandwick, whofe name and form befpeak it the refidencc of fome of them. But no traces of their hiftory re¬ main, except the name of Belus, in ancient charadfers, on a ftone in the church of Birla, where ftill is to be feen one of the principal palaces. This government probably fublifted till the fubverfion of the Pidtifh king¬ dom in Scotland, A. D. 839, by Kenneth II. king of Scotland. On the whole, however, the time of the difeovery and population of the Orkneys is certainly unknown. Probably it was ve^y early } for we are told that they owe their .name to the Greets: Orcades has memorant diftas a nomine Graeco, Claudian. O R K [ 498 ] O R K Orkner. gent and religious men who had come from Norway ^ with C>laiis, remnined in the Orcades and in the north of Scotland, to fulfil their pious refolution of fpread- ing the light of the gofpel there. Ohus, with the reft ©f his followers, failed on another expedition towards the frith of Moray. The Jeath of Kindius his fon, which happened foon after Olaus’s return to Norway, releafed Sigurdis from his engagements with him ; and he entered into one with Malcolm II. one of whofe daughters he had in marriage, and by whom he had a fon, Porphinns Torphinus’s bravery, magnificence, generofity, and hofpitality, endeared him to the inha¬ bitants ; and he ruled without controul tor many years, till Ronald, a grandfon of Sigurdis, who had lived an Norway, and who was efteemed the rightful heir of the earldom of Orkney, made a fncctfsful defeent up¬ on it. Torphinus wifhed to give him battle ; and in a fea-fight, with the afiiftance of fome fhips from Ar- ninus, a man who had filled fome of the firft places in Norway, he totally defeated him By courting the friendthip of that court, his dominions remained quiet for the greater part of his life; the latter part of which was no lefs eminent for eftiblifhing falutary laws, and ■encouraging the arts of induftry, than the former had been diftinguifhed for military fame andfuccelsin the exploits of war. He lived to an advanced age, until after Malcolm III. had afeended the throne of Scotland. Torphinus had built a fumptuous church in Byrfa, where the firft bifhops of Orkney refided. In the decline of life he retired to that iflan 1, and, iinlfiiing his days with exemplary piety, was with much folemnity interred in the temple which he had raifed. His country long lamented the lofs of fo celebrated a ruler, who had eftablifhed fecurity in it, through the influence of his laws, and had taught it to enjoy the arts and blefilngs of peace. He left two fons, Paul and Erland, who through the whole of their live* amicably (hared both in the honours and adminiftra- tioia of their father’s extenfive domain. During this period, the northern counties are faid to have arrived at a very fuperior degree of cultivation and improve¬ ment, which became equally confpicuous in the rich- jiefs of their lands, and in the mildnefs of their difpo- fitiona. Their fons, however, did not both inherit their father’s virtues. Magnus, the fon of Erland, was pious and peaceable ; a great promoter of reli¬ gion, an 1 anxious in patronifing the Romifh mifliona- ries, and in piote&ing the ellablifhments of Chriftia- nity: but Hacon, the heir of Paul, was vehement, wild, and impatient of reftraint. He faw how Mag¬ nus was revered, and envy drove him to revenge ; for, by the moft deliberate and deceitful villainy, he got Mignus into his power, and murdered him without mercy. The latter part of his life was fpent in penance, and in improving his dominions. Magnus’s fingular piety, and the manner of his un¬ fortunate death, were fo well reprefented at the court ©f Rome, that he was canonized. Hacon left two fons, Paul the Silent, and Harold the Orator. Caith- nefs came to Harold, and the Orkneys were governed by Paul. Ronald, a defeendant of St Magnus, an elegant and accomplifhed youth, appeared at the court of Norway, and was fupported in a claim upon the Ork¬ neys, as the heir of the canonized martyr. He fent mefTengers to Paul, and offered to (hare the govern- Orkney ment with him ; but this propofal was refufei, and ■—v™111^ the ambaffidors were treated with great contempt. They, however, round perfons of power difpofed to fecon i their mafter’s views; who foon after their re¬ turn fet out, and vowed, if he fucceeded, to build a magnificent church, and to dedicate it to St Magnus. All feemed fatisfiel with the enterprife ; and, full of hope, the fleet fet fill. Paul in the mean time put himfrlf in a ftate of defence. By very artful ma¬ noeuvres, however, Ranall obtained his nurpofe, and willingly (hired his fovereignty with Harold, the le¬ gal heir of Paul. They lived amicably together; and on the affaflination of Ronald, which was arcomplifh- ed by a proud chieftain, who thought himfelf infulted, he was buried with great pomp. Harold now fully poflefled the unrivalled fovereignty of the north, and lived long to enjoy it. We find that in 119b he was able to bring 7000 men to the field, and a body of ca¬ valry, againft the army of William king of Scotland, but was immediately defeated. In the next year, the Caithnefians rebelled again, headed by one Roderic, and Torphinus, fon to Harold. The king met and defeated them near Invernefs. Roderick was (lain ; and William, feizing on Harold in the extremity of Caithnefs, detained him till Torphinus furrendered himfelf asanhoftage ; but on fome new treafons of the father, the king, according to the barbarity of the times, caufed the eyes of the unhappy youth to be put out ; and had him emafcnlated, of which he (oon perifhed in prifon. Harold died in the 73d year of his age ; and with him ended, in its earls, the independent fo¬ vereignty of the north of Scotland. The Norwegians feem to have been in poflefiion of thefe ides as late a» 1266; for then Magnus IV. king of Norway, being worded in war with the Scots, yielded them to Alex¬ ander III. king of Scotland by treaty, and Haquin king of Norway confirmed the pofleffion of them to king Robert Bruce in the year 1312. Laftly, in 1464* Chriftian I. king of Norway and Denmark, when he gave his daughter in marriage to James III. king of Scotland, transferred all his right to them to his fon- in-law and his fucceflbrs; to make which more binding the Pope’s confirmation was obtained. We are told by fome, that Magnus fold them to Alexander for the fum of 4000 merits Sterling, and a yearly acknow¬ ledgment of 100‘merks. They are about 30 in number; hut many of them are uninhabited, the greater part being (mall, and producing only pafturage for cattle. The principal i(lands are denominated by the names of Mainland^ South Ronaldjha. S Flotta, Cop\nJhay Strupen- Jha, Stronfay Sandat &c. the terminationa in a, ox hay being generally given in the Teutonic to fuch places as are furrounded by water. The currents and tides flowing between the iflands are extremely rapid and dangerous. Near an ifland called Swinna are two great whirlpools, called the •wells of Sivinna, which are counted dangerous by mariners, efpecially in a calm. When failors find themfelves fucked into the vortex, it is faid they throw out a barrel, or fome bulky fubftance, which fmooths the water till it is fucked down and thrown up at a conliderable diftancCj during which time the Ihip pafles over in fafety. But when there is a breeze of wind, thefe whirlpools may O R K Oifcney, rr.yj be crofTed without any danger. The largeft of thefe ifl-inds is called Pomona, in length 33, and in breadth 9 miles, containing 9 panih-churches, and 4 excellent harbours The air of thefe iflands is moift, on account of the neighbourhood of the fea ; and froft and fnow do not continue long. In fome places the foil is bare and mountainous, and in others fandy and barren ; how- ever, many of the iflands produce large crops of barley and oats, but no wheat or other grain excepting what is inclofed in gardens. Thefe, when duly cultivated, produce all kinds of kitchen her1 s and roots, bring¬ ing even fruit-trees to maturity ; but out of them, in the open country, there is fcarce a tree or ftirub to be feen, except juniper, wild myrtle, heath, and the cyur hodon : yet this deficiency cannot be imputed to the poverty of the foil, or the nature of the climate; for the trunks of large oaks are frequently dug up in the maffltes. This is likewife the cafe in the molt barren parts of the Highlands of Scotland, where not a ftirub is to be feen above the furface of the earth j nay, the inhabitants frequently find, deep in the earth, the roots of large trees, evidently exhi! iting marks of the ax by which they were felled ; fo that thefe nor* them parts mull have undergone fome ftrange revolu* tions The Orkneys produce great variety of herbs and berries, grafs and corn, which laft is exported as far as Edinburgh. In fome of the iflands, the natives have difeovered mines of tin, lead, and filver, though none of them are wrought to any advantage ; in others, we find abundance of marl, grey and red flate, quarries of freeftone, and even of marble and alabafter. When the wind rages to any violence, the fea throws in plenty of timber, torn from other coun¬ tries ; and, not unfrequently, the people find large pieces of ; mbergreafe. The frelh water in thefe iflands is very pure and limpid ; and, though there are no large rivers in the Orkneys, the ground is well watered with lakes and pleafant rivulets, that not only ferve to turn their mills, but alfo abound with trout of the mod delicate flavour. Befidea the abundance of little horfes, black cattle, fheep, fwine, and rabbits, the inhabitants of the Ork¬ neys rear all forts of domeftic animals and tame poul¬ try. Their heaths and commons yield plenty of red deer, and all forts of game ; partridges, growfe, heath-cocks, plover, duck, teal, and widgeon: the fca-coafl teems with feals and otters; and are vilited by whales, cod, ling, tufle, herrings, and all manner of fiftr : on the fhore they find fpermaceti, os fepise, and a great variety of flrells and corallines, with a mul¬ titude of oyflers, remarkably large mufcles, crabs, and cockles. The rocks are covered with fea-fowl, wild geefe, folan geefe, barnacles, eagles, hawks, and kites. With refpeft to the barnacles, or, as the natives call them, the deck getfe, they are faid to be found in {hells flicking by the bills to trees, in feveral iflnnds. M-itin affirms he has feen them in this iitua- tion, but could not perceive them alive ; and indeed the whole account of their generation and production, exhibited by the northern natuialifts, is ablurd and unphilofophical. The Orkney eagles are fo llrong, that, according to the reports of the country, they have been known to carry away young children in their ta¬ lons. Certain it is, they make fuck havock among o R k the lambs, that he who kills an eagle is entitled by Orkney, law to a hen from every h^ufe in the parifh where it v—■ was killed. The king’s falconer vifits thefe iflnnds every year, in order to fetch away the young hawks and falcons from their nefls among the precipices £ he enjoys a yearly falary of twenty pounds, and may claim a hen or a dog from every houfe in the coun¬ try, except thofe that are exprefsly exempted from this impofition. The gentry of the Orkneys are civilized, polite, and hofpitable ; and live like thofe of Scotland, from whom they are chiefly defeended. They live com¬ fortably, are remarkably courteous to ftrangers, and drink a great quantity of wine, with which their cellars are generally well ftored. Indeed the inhabi¬ tants of the Orkneys may be now juftly deemed a Scotch colony. They fpeak the language, profef® the religion, follow the fafhions, and are fubjedl to the laws, of that people. They are frugal, fagacious, circumfpeft, religious, and hofpitable. Their mariners are remarkably bold, a&ive, dexterous, and hardy. Many furprifing inftances of longevity occur here, as well as in Shetland, of perfons living to the age of 140. The Orkney women are generally handfome and well fhaped, and bring forth children at a very advanced age. In the Orkneys, fome particular lands are held by a tenure called Udal Right, from Ulcius, or Olaus, king of Norway, who farmed the lands, on condition of receiving one-third of the produce ; and this right devolved in fucceffion, without any charter granted by the fovereigo. The inhabitanca of Orkney, inftead of meafuring their corn, weigh it in pifmores or pundlers. Their leait denomination is a mark, confuting of 18 ounces, and 24 mailers make a lifpound, which is a Danilh quantity. The poorer fort of people in the Orkneys appear very meanly habited, with a piece of feal fltin" irtftead of fhoes ; and living chiefly on falt-fifti, are fubjeft to the feurvy. They are much addifted to fuperttitioug, rites; in particular, interpreting dreams and omens, and believing in the force of idle charms. The iflands of Oikney, we have already obferved, produce very bold, able, and hardy mariners. The common peoplf-j, in general, are inured to fatigue, and remarkably ad¬ venturous, both in fiftring during rough weather, and in climbing the rocks for the flefli, eggs, and down, of fea-fowl. Formerly, while they were expofed to the invalions of the Norwegians, or weitern ifianders, every village was obliged to equip a large boat well manned ; and all the fencible men appeared in arms, when the alarm w'as given by the beacons lighted on the tops of the rocks and higheit mountains. Thefe beacons, known by the name of nvard-hilh, are ftill to be feen in every ifland. Their corn land they inclofe with mud or ftone walls, to preferve it from the ravages of their (beep, fwine, and cattle, which wander about at random, without being al¬ iened by herdfmen : their ordinary manure, efpe- daily near the fea-coafl, is fea-weed, which they carefully gather and divide into equal portions. Their flieep are marked on the ears and nofe ; but fo wild, that when they have occafion to {hear them in the month of May, they are obliged to hunt every indi¬ vidual, with dogs trained for that purpofe. Their manner oi catching lea-fowl is curious and particular. 3 R. 2 Under l 499 1 O R K Orkney. Under tdie rock where thefe fowls build, they row ■—v their boat, provided with a large net, to the upper corners of which are fattened two ropes, lowered down from the top of the mountain by men placed in that ftation. Thefe hoifting up the net, until it be fpread oppofite to the cliffs in which the fowls are fitting, the boatmen below make a noife with a rattle, by which the fowls being frightened, fly forwards into the bo- fom of the net, in which they are immediately en- clofed and lowered down into the boat ; others prac- tife the method ufed in Iceland and Norway, and are lowered down by a fingle rope from the fummit of the mountain ; this is the conttant way of robbing the hawk’s nett. SeeBiKD-catc/iing. In thefe iflands fome ft range effects are produced by thunder and lightning. In the year 1680, the lightning entered a cow-houfe, in which 12 cows ftood in a row, and killed every fe- cond beaft as fhe ftood, and left the reft untouched. The dittempers that prevail moftly in the Orkneys are agues, comfumptions, fcurvy, and itch. The agues, which abound in the fpring, the natives cure with a diet drink of bitters and antifcorbutics infufed in ale : for pbthifical complaints they ufe the plant arby, and the caryophyllus marinus boiled with fweet milk. The ifles of Orkney and Shetland compofe one ftewartry, and fend one member to the Britifh parlia¬ ment. The right of fuperiority to the Orkneys was difmembered from the crown by the union parliament, and granted for a certain yearly confideration to the earl of Morton, by Queen Anne, who appointed him hereditary fteward and judiciary. This nobleman pof- feffes the power of creating certain judges, called bai¬ liff's. There is one of thefe eftablifhed in every ifland and parifh, with power to fuperintend the manners of the inhabitants, to hold courts and determine civil caufes, according to the laws of Scotland, to the va¬ lue of ten pounds Scots money, amounting to 16 s. 8 d : but all contefts of higher import are reftn-ed to the decifxon of the fteward or his deputy, who refides at Kirkwall, which is the feat of juftice. Subfer- vient to the bailiffs are fix or feven of the moft repu¬ table and intelligent inhabitants, who overfee the con¬ duct of their fellows, adting as conftables, and make report of all enormities to the bailiff; who caufes the delinquent to be apprehended and punifhed, if the crime be within the extent of his judicial power; other- wife he tranfmits him to Kirkwall, where he is tried by the fteward. The Proteftant religion prevails in the ifles of Orkney, according to the rites and difeipline of the kirk ; thefe, and the ifles of Shetland, conftitu- ting one prefoytery, which affembles at Kirkwall. The country is divided into 18 parifties, containing 31 churches, and above 100 chapels. The trade of the Orkneys is not at prefent very confiderable, though it might be extended to great advantage. They fupply with frelh provifions, for ready money, the fhips and veffels that touch upon the coaft in the courfe ©f northern voyages, or in their paffage from the Eaft Indies, when they go north about Ireland and Scotland, in time of war, to avoid the privateers of the enemy. They are alfo vifited by thofe engaged in the herring-fifhery, though there is not fuch a refort on this account to thefe iflands as to the illes of Shetland. Neverthelefs, a good number of O R K boats from the weftern parts of Scotland, as well as Orkney from Londonderry, Belfatt, and other parts of Ire¬ land, filh for herring as far north as the Leuze, and fupply the Orkneys with tobacco, wine, bran¬ dy and other fpiritous liquors, cloths, and divers manufactures. Thefe they exchange for fifh, and oil extrafted from porpoifes, feals, and other fea-animals. The people of Orkney export annually great numbers of black cattle, fwine, and fiieep; together with large quantities of corn, butter, tallow, fait, and ftuffs made in the country, over and above the Ikins of feals, ot¬ ters, lambs, and rabbits, down, feathers, writing- quills, hams, and wool ; yet all thefe articles would, in point of profit, fall infinitely ftiort of their herring- fi hery, were it profecuted with induftry, economy, and vigour. As there are no merchants in the Ork¬ neys at prefent who export fiih on their own account,, what herrings are taken, they fell to the Dutch or Scotch dealers in and about Invernefs. They gene¬ rally filh for herring on the weft fide of the Orkneys ; and are therefore more remote from markets than thofe who are employed in the fame manner on the coaft of Shetland. In the Orkney iflands they fee to read at midnight in June and July ; and during four of the fiummer months they have frequent communi¬ cations, both for bufinefs and curiofity, with each other, and with the continent: the reft of the year, however, they are almoft inacceflible, through togs, darknefs, and ftorms. It is a certain fact, that a Scotch filherman was imprifoned in May, for pub- lithing the account of the prince and princefs of Orange, being raifed to the throne of England the preceding. November; and he would probably have been hanged, had not the news been confirmed by the arrival of a Ihip. We may reckon among the curiofities of the Ork¬ neys, the Phafeoli) commonly known by the name of Molucca leans, and fometimes they are called Orkney leans. They are a fort of fruit found on the Ihore of. the Orkney iflands, being thrown on them by ftorms of welterly wind. They are of feveral diltinft fpecies, and ate none of them the produce of thofe iflands, nor of any places thereabout, but are probably of A- merican origin, many of them being plainly natives of Jamaica, and other iflands of the Indies. They are found principally on thofe coafts which are molt expofed to the waves of the great ocean, and are on thefe fo plentiful, that they might be ga¬ thered in large quantities, if of any value ; but the only ufe they are put to, is the making of fnuff-boxes out of them. Sir Robert Sibbald, and Mr Wallace, in their accounts of Scotland, have both named them Mollucca Beans. Many ftrange filhesand curious fhells are alfo frequently call up by the ocean; of thefe laft a vail variety are preferved for adorning the cabinets of modern naturalifts. Sometimes exotic fowls are driven upon the Orkneys by tempeftuous weather: filh, as large as whitings, have been thrown alhore to a confiderable diftance within the land. At Cantick-head, in the ifland Waes, and fome other places, huge ftones are often heaved up by the violence of the fea and wind, and call over high rocks upon the land. A fingle Laplander has been feen more thaupnee on this coaff, in his flender canoe, covered with Heins, being driven hither by adverfe winds and ftorms. The Orkneys c are [ s00 1 O R K [ 50 Orkney, are not altogether deftitnte of ancient monuments and r~~ curiofities of art. In Hoy we find an entire ftone, 36 feet long, 18 in breadth, and 9 in thicknefs, ly¬ ing between two hills, and known by the name of dwarjlc /lone. It is hollowed within by the tools of a mafon, the marks of which are Hill apparent. The entrance is a fquare hole about two feet high, with a Hone, by way of door, Handing before it. With¬ in w'e find a bed with a pillow cutout of the ftone ; at the other end is a couch of the fame kind ; and in the middle a hearth, above wdnch there is a hole or vent for the exit of the fmoke. This curiofity is found in the midft of a defolate heath,- and is fup- pofed to have been the refidence of a hermit : in the very neighbourhood of this ftone there is a very high and fteep mountain, called the wart hill of Hoy, near the fummit of which, in the months of May, June, and July, fomething at noon-day is feen to Ihine and fparkle with remarkable luftre, fuppofed by the common people to be an inchanted carbuncle : many perfons have clambered up the hill in queft of it, but found nothing. Perhaps this fplendour is produ¬ ced by the reflection of the fun on a fmall ftream of water' Hiding over the face of a fmooth rock. At Stennis, in the main land, there is a caufeway of Hones over a loch or lake, at the fouth end of which we obferve a circle of ilones rifing about 20 feet above ground, each being fix feet in breadth, and from one to two feet in thicknefs : between this circle and the caufeway two ftones of the fame dimenfions ftand by themfelves, and one of them is perforated in the middle. At the diftance of half a mile from the other end of the caufeway appears a larger circle of the fame kind of ftones, the diameter of which may amount to x 10 paces ; fome of thefe ftones are fallen; and to the eaft and weft of the larger circle are two ar¬ tificial green mounts. Both rounds are furrounded with a ditch ; and one cannot view them without ad¬ miration, confidering the art that muft have been ufed to bring fuch unwieldy mafles together in this order. They were pro! ably temples and places of facrifiee ufed in times of pagan fuperftition ; and feem to bear a great affinity with the celebrated monument called Stonehenge, on Salifbury Plain in England. In one of the mounts, at the north end of the caufeway, the natives found x\.vc\z Jibuhe, or claips of hlvei, formed into a circle, and refembling a horfe-fboe. In many different places of the Orkneys we find rude obelifks or fingle ftones of a great height, fet up either as me¬ morials of battles, treaties, or the deceafe of remark¬ able perfonages. Iu Roufay, between two high mountains, there is a place which the natives diftin- guifh by the appellation of the camp of Jupiter Fringe but the meaning of this' name, handed down by tra¬ dition, is not known. At the weft end of the main land, near Skeal, we find a furpriling caufeway, above a quarter of a mile in length, on the fummit of high hills, compofed of reddifh ftones of different magni¬ tudes impreffed with various figures both on the up¬ per and under furface. Some gentlemen in the neigh¬ bourhood have carried off the moft beautiful of thefe ftones, to be fet in their chimneys by way of ornament, like the painted tiles of Holland. This country pro¬ duces many fepulchres of different nations. In the plains or links of Skeal, the fand being blown away 1 ] o R K from the fur face of the ground, feverai fquare cata combs appear built of ftones well cemented together, ^ containing fome parcels of black earth, and each fe- cured by a large ftone at the mouth. Sepulchres of the fame kind are found at Roufum in Stronfa; which is likewife remarkable for a different kind of monu¬ ment, confifting of one entire ftone cylinder hollow-- ed, with a bottom like that of a barrel, and a round ftone to fill up the entrance : above, the ftone was fharpened into an edge ; within were found fome burned bones and red clay ; a'nd over it was placed a- large flat ftone for the piefervation of the whole.- Thefe, in all probability, were Roman catacombs. In Weftra divers Danifh graves have been difeovered : in one of thefe appeared the fkeleton of a man, with a fword on one fide and a IDanifh ax on the other. Some have been found buried with dogs,- combs, knives, and other utenfils. In many places of the country we find round hillocks or barrows, here known- by the name of brogh, fignifying, in the I eutonic lan¬ guage, burying place, fuppofed to have been the ce= meteries of the ancient Saxons. In different parts of thefe iflands we fee the remains of great buildings, believed to have been fortreffes eredled by the Danes or Norwegians when they pofleffed the country. One of thefe in the ifle of Wyre, called the cajlle of Cop- pi-row, fignifying a town of fecurity, is furrounded by a foffe, and the firft floor ftill remains above ground, a perfeft fquare of ftone wall, very thick, ftrongly built, and cemented with lime, the area with¬ in not exceeding ten feet in length. Of this coppi- row the common people relate many idle Tables. In the chapel of Get, in- the ifle of Sanda, there is a grave 19 feet long, in which was found part of a man’s back bone, larger than that of a horfe. Hu¬ man bones, of nearly the fame fize, have been dug up in Weftra ; and indeed this country is remarkable for producing men of a gigantic ftature. Within the an¬ cient fabric of Lady Kirk in South Ronalftxaw, there is a ftone four feet long and two feet broad, on which the print of two feet are engraven, fuppofed to be the place where, in times of popery, penitents flood to do public penance. The cathedral of Kirkwall, the capital of the Orkneys, is a fine Gothic budding, de¬ dicated to St Magnus, but now converted into a pa- rifh church. Its roof is fupported by 14 pillars on each fide ; and its fteeple, in which is a good ring of bells, by four large pillars. The three gates of the church are chequered with red and white polilhed ftones, embofied and elegantly flowered. Campbell, in his Political Survey, fuggefls two im¬ provements in the Orkneys : 1. The ereding an uni- verfity ; of which he recapitulates the probable advan¬ tages, arifing from their centrical fituation: And, 2. Allowing the Eaft India company to ered a fpaci- ous magazine in one of thefe iftands ; where alfo a colie dor, and a fufficient number of king’s officers, fhould refide, to receive the duties of fuch Eaft India commodities as might be taken off by Britifh fubjeds. Thefe he propofes for the Orkneys in particular, and in addition to improvements propofed for the whole iflands in general. We are told that the Orkneys contain 30,000 inhabitants, and are equal in extent to the county of Huntingdon. ORLE, Orxet, or Orloy in architcdure, a fillet* under. Orkney, Orle. Orle II Orleans O R I, under the ovolo, or quarter round of a capital, it is at the top or bottom of a (haft, it is called cinc¬ ture. Palladio ufes the word orlo for the plenith of the bafis of the columns. Orle, in heraldry. See Heraldry, p. 4154. ORLEANOIS, a province of France, including the fevtral diftri&s of Orleanois-Proper, Beauce-Pro- per, or Chartrain, Dunois, Vendomou, Blaifois, the grcatdl part of Gatinois, and Perche-Gouet The principal rivers of it are the Loire, the Loiret, the Cher, the Laconic, the Aigle, the Hyere, the Yonne, and the Eyre. There are a!fo fome remarkable ca¬ nals, particularly thofe of Bn'are and Orleans. I he river Loire, and the canals drawn from thence, great¬ ly facilitate and promote the inland trade of the king¬ dom, and particularly of this government, which lies entirely within the jurifdi&ion of the parliament of Paris; and, beiides the chief governor, has feveral fub- ordinate ones. Orleanois, in Latin Aurehanenjis is bounded on the fouth i»y Sologne, on the north by Upper- Beauce, on the eaft by Gatinois, and on the weft by Dunois and Vendomois. The Loire divides it into Upper and Lower; the former lying to the north and the latter to the fouth of that river. It yields plenty of grain, wine, wood, and fruit, and abounds in cattle, game, and fifh. ORLEANS, the capital of the government of Orleanois. It was anciently called Genabum, or Cena- lum; and afterwards denominated Aurelia, Aurc/ix, and Aure/ianum, by the emperor Aurelian, who confi- derably enlarged it In Julius Caefar’s time it was the capital of the Carnutes. It (lands about 20 leagues fouth of Paris, on the northern hank of the Loire; acrofs which Mr Wraxall fays there is an elegant bridge of nine arches, the entrance by which is ex¬ ceedingly noble and ftriking, the ftreet which leads from it being compofed of moft elegant modern build- ings. In general, however, excepting this ftreet, it is very meanly built; the ftreets are narrow, and the inhabitants in general poor. It is furrounded with walls, and fortified with 40 towers. The ftreets al- moft all terminate at the quay for the convenience of trade, before C ] o r l When foreft, the largofl in the whole kingdom. Before the OrleaR* revolution it belonged to the Duke of Orleans • to -v— wdiom the timi er felled in it, one year with another brought about ioo,coo livres. Ever fince the year 13+4 th,s efty has been a dukedom and peerage, and ufuady an appennage of fome piince of the blood. I he late duke, who has taken the name o{Egalite, and who is ftill alive, feems to be one of the moft deteftable monfters which ever difgraced humanity. Louis XIV gave the dukedom to his own brocher Philip, who began and fin.fired the canal ; wnich, ! y the duties paid' by velfels going up and down, brought in, one year with another, 150,000 livres The bifttop was fuffra- gan to the archbfihop of Paris, and had a revenue of 24,000 hvres, out of which his tax to Rome was 2000 florins. A new bdhop, it is faid, on the firft day of his entering, had the privilege of releafing all the pri- foners m it, except thofe committed for treafon Ini' the ftreet leading from the bridge ftands the celebrated monument where Charles VII. and Joan of Arc the Maid of Orleans, are reprefented on their knees before the body of our Saviour, who lies extended on the lap of the Virgin. It was ceded by order of that mo- oarch m 1458, to perpetuate his vidories over the Enghfh, and their expulfion from his dominions. All th!< hiffUL 8 ar in, i.r°,n\ The king appears bareheaded, and by him lies his helmet furmounted with a crown Oppofite to him is the Maid herlelf, in the fame atti¬ tude of grateful devotion to Heaven. It is a moft precious and invaluable hiftorical monument “ in the Hotel de Ville (fays Wraxall) is a portrait of the fame immortal woman, which I ftudied long and attentively. Though it was not done till 1581, which was near 130 years after her deceafe, it is yet the oldeft and belt pidure of her now exifting. The painter feems undoubtedly to have drawn a flattering refemblance of her, and to have given his heroine imaginary charms. Her face, though long, is of ex¬ ceeding beauty, heightened by an expreflion of intel- .gence and grandeur rarely united. Her hair falla loofely down her back, and (he wears on her head a fort of bonnet enriched with pearls, and (haded with white plumes, tied under her chin with a firing. It is a place of confi'lerahle ^aitude find a , 31™ d™'Sf’ the revolution had feveral inferior courts of on her bofom. a r„ “P* . — inferior courts jufrcc, and an univerfity of no great repute. It was alfo a bifhop’s fee ; and the cathedral is a moft fuperb Gothic flrudure, and had the fintfl fleeple in France till it was damaged in the time of the civil wars. There wen. 2 ? parifhes in it, and a great number of churches fome of which were collegiate, and religious houfes! 1 heie is aifo a public walk, planted with feveral tows of trees ; and there ufed to he fome fugar bakers; a manufaaurc of flockings and fhetp fkins ; a ftminary in which divinity was taught ; a great trade in bran- y, wine, fpices, and feveral manufactures, which, w t nearly other commodities, ufed to he conveyed to Pans by means of the Loire, and the canal which takes its name from the city The canal begins about two nuUs a. ove the city ; is near 18 leagues in length i and teimmates on the Loing, which falls into the Seine. 1 he environs of Orleans, more cfpecially in the pro- vmcc of Sologne, to the fouth of the Lo'ire, are ve^ agree-ble It is in general a level country, covert wuh corn and vines, a q the north of the c*fy is a on her bofom, a necklace compofed of fmall links. Her drefs, which is that of a woman, 1 find it difficult exadly to deferibe. It fits clofe to the body, and is cut or flaffied at the arms and elbows. Round her waifl is an embroidered girdle, and in her right hand ihe holds the fword with which fhe expelled the ene¬ mies of her fovereign and her country. I am not furprifed at the animated and enthufiallic attachment which the Lrench ftill cherifh for her memory. I he critical and defperate emergency in which fhe appear¬ ed ; her fex, youth, and even the obfeunty of her birth; the unparalleled fuccefs which crowned her enterpnze; the cruel and deceftable fentence by which -ne was put to death ; the air of the marvellous fpread over the whole narration, increafed and ftrengthened y that veneration which time affixes to every great event— all thefe united caufes confpire to place her acove mortality. Rome and Athens would undoubt¬ edly have ranked her among their tutelary deities, and have ereded temples to her honour; nor can I help being amazed, that amid$ the almoft infinite numbe O R M r J O R N ©rlesn* numlicr of modem faints who croud and difgrace their . churches, no altar has yet been dedicated to the iflaid of Orlean8.,, See Franc*, n° tot. The bridge was new built this century, and opened in 1760 ; and the French tfteem it the fiiseft; in the world. E. Long 1. 59. N. Lat. 47 54. Orleans (Peter Jofeph), a French Jefuit, whom it is proper to mention, becaufe he wrote an Hijloire des Revolutions d’ Angleterre, was born at Bourges in 1641. He taught the belles lettres for fome time in his fociety, but afterwards devoted himfelf to the writing of hif- toiy. This purfuit he continued till his death, which happened in 1698. He wrote alfo A Hiftory of the Revolutions of Spain ; A Hiftory of Two conquering Tartars, Chunchi and Camhi ; The Life of Father Coton, &c. His Hiftory of the Revolutions in Eng¬ land, under the Family of the Stuarts, from the Year 1603 to 1690, was tranflated into Englifii, and pub- lilhed at London, 1711, in one vol. 8vo : to v/hich is prefixed an Introduction, by Laurence Echard, M. A. who fays, that “ the great varieties and wonderful changes in thefe reigns are here judicioufiy comprifid in a moderate volume with no lefs perfpicuity than ftriftnefs; and with a beautiful mixture of fhort cha- rafters, nice reflexions, and noble fentences, which render the whole agreeable and inftruXive. But while the reader is entertained with fo much fkill and fincnefs, we ought to caution him with relation to the education and religion of the author : for though he has great marks of a generous candour, and a laudable deference to all fuperiors yCt he is to be confidered, in all places, as one in favour with the French king, and not only a true papift, but a complete jefuit.” ORLOPE, in the fea language, the uppermoft fpace or deck in a great Ihip, reaching from the main to the mizen maft. In three-deck fhips, the fecond and loweft decks are fometimes called orlopes. ORMOND, the northern divifion of the county of Tipperary, in the province of Munfter in Ireland. For a long time it gave the title of early and afterwards of marquis and duley to the noble family of Butler, de- feended from a lifter of Thomas a Becket archbiftiop of Canterbury; till, at the acceffion of George I. the laft duke was attainted of high treafon, and died abroad. In that part of the country the family had great pre¬ rogatives and privileges granted by Edward III. ORMSIDE a town of England, near Appleby, in Weftmoreland, with a church and parifti, but fmall. A great number of vcflels of brafs, fome of which feemed to have been gilt, were difeovexed near the manor- houfe, by the water wafhing away the foil. The manor-houfe is built caftleways. ORMSKIRK, in Lancaftiire, in England, is a handfome town, with a good inland trade. By the late inland navigation, it has communication with the rivers Merfey, Dee, Ribble, Oufe, Trent, Darwent, Severn, Humber, Thames, Avon, &c. which naviga¬ tion, including its windings, extends above 500 miles, in the counties of Lincoln, Nottingham, York, Lan- cafter, Weftmoreland, Stafford, Warwick, Leicefter, Oxford, Worctfter, &c. There is a bituminous earth about this place, from which oil of amber is extraXed, that preferves raw flelh, and ftrves the poor people in- ftead of candles. There is nothing remarkable at Ormfkirk, but the monuments of fome of the ancient family of the Stan¬ leys before they were ennobled. Not far from it is Ormus Latham Houfe ; to which belongs a large eftate, and .11 a fine park. It is remarkable only becaufe it was galF lar.tly defended in the civil wars by lady Charlotte countefs of Derby, who held it to the lalb extremity againft the parliament forces, which could never oblige her to capitulate. She held out glorioufly till ftie was relieved by Prince Rupert. It was, however, ruined in a fecond fiege ; and fo'd by the family to the late Sir Thomas Bootle, who built a very magnificent houfe upon it. ORMUS, a fmall ifland of Afia, at the bottom of the gulph of the fame name, at the entrance of the Gulph of Perfia. It is about two leagues from the main land, and about fix leagues in circuit. They catch excellent oyfters about the ifland ; and it yields plenty of fine white fait; alfo a kind of fhining black fand, which is ufed for dulling writings, and is tranf- ported in confiderable quantity to Europe. There is neither fweet water nor grafs upon it, the foil being of a fait fulphureous nature. It was taken by the Portuguefe in 1507, who fortified it; and it was af¬ terwards frequented by a vaft number of merchants, who were extremely rich. In 1622 the Perfians, by the affiftance of the Englilh, conquered this place, and demolifhed the houfes, which were 4000 in num¬ ber, containing 40,000 inhabitants. Some time after, the Perfians rebuilt the fort, and placed a garrifon in it; but they could never bring it to be a place of trade as before : however, it is the key of the Perfian Gulph, as well on account of the importance of the place, as the commodioufntfs of the harbour. It ia now almoft deferted, for it produces nothing but fait, which fometimes is two inches deep upon the furface of the earth. E. Long. 56. 25. N. Lat. 27. 20. ORN1CUS lapis, a name given by fome authors to the fapphire of the ancient®, which is a peculiar fpecies of our lapis lazuli, in which the gold-coloured matter is not difpofed in veins, but in feparate fpots, of the form of a ftar. It was firft called orinifius and orinur, by corruption from aurinus, “ golden and thence came at length the word ornicus. ORNITHINE, a name given by the ancients to certain winds, which ufually blew in the fpring, at the time when the birds of paffage came over to thens, Pliny fays, that thefe winds blew from the weft, and that by fome the Ecefian winds were called by this name. Others fuppofe that they blew from the north, or north-weft. ORNITHOGALLUM, Star of Bethlehem A genus of the monogynia order, belonging to the hexandria clafs of plants ; and in the natural method ranking under the 10th order, Coronarue.. The corol¬ la is hexapetalous, eteX, perfifting, and patent above the middle; the filaments alterdilated at the bafe. There are feven fpccies ; all of them herbaceous per¬ ennials, riling from fix inches to three feet high, ha¬ ving ftalks terminated with long fpikts of hexapeta- lous, ftar-lhaped, white, and yellow flowers. Six of the fpecies are very hardy, and will profper in any fituation ; but one, named the capetifey a native of the Cape of Good Hope, requires the affiitance of artifi¬ cial warmth to preft-rve it in this country. They are all eafily propagated by off-fets from the roots. The bulbous roots of all the fpecies are nutritious and wholefome. € ORNITHO C 5°4 1 ORNITHOLOGY. ^■\Rnithology is a fcience which treats of birds ; defcribes their form, external and internal; and teaches their ceconomy and their ufes. A biid is an animal covered with feathers; furnifh- ;ed with a bill; having two wings, and only two legs ; with the faculty, except in a very few inflances, of re¬ moving itfelf from place to place through the air.— But before proceeding to analtfe the charafteriftic parts of birds, it will be proper to premife an expla¬ nation of the terms ufed by naturalifts in defcribing .them. EXPLANATION ot fome Technical Terms in Or¬ nithology ufed by Pknnan-t and Linnjeus. Fig. i. Cere. Cera The naked ficin that covers the bafe of the bill in the hawk kind. A word ufed by Linnaeus to exprefs the fliort feathers on the forehead juft above the bill. In crows thefe fall forwards over the noftrils. The fpace between the bill and the eye, generally covered with feathers; but in fome birds naked, as in the black and white grebe. The fkin that furrounds the eye, which is generally bare ; particularly in the heron and .parrot. A bill is called rojlrum emar- ginatum when there is a fmall notch near the end: this is con- fpicuous in that of butcher-birds and thrufiies. Vibrljfa peftinaU, ftiff hairs that grow on each fide the mouth, formed like a double comb, to be feen in the goatfucker, fly¬ catcher, &c. A fmall joint riling at the end of the middle part of the wing, or the cubitus; on which are three or five feathers. The fmall feathers that lie in ieveral rows on the bones of the wings. The under coverts are thofe that line the infide of the wings. _ The feathers that lie imme¬ diately over the quill feathers and fecondary feathers. The largeft feathers of the wings, or thofe that rife from the fir ft bone. I hofe that rife from the fe* cond. 2. Capljlrutn 3. Lorutn 4. Orbits. Orlita 5. Emargmatum 6. Vibriffa 7. Bajlard wing Alula fpuria 8. Lejfer coverts of the wings. Teblri ces prhnte 9. Greater coverts Tectrices fecuntla 10. Quill feathers Primores 21. Secondary feathers Secundaria NQ 25 12. Coverts of the tail Uropygium 13. Vent-feathers 14. The tail. RcGrices 15. Scapular feathers 16. Nucha 17. Rojlrum fubulatum 18. Pes ambulator'ius. 19. Pes grajforius 20. Pes fcanforius 21. Finned foot. Pes cobatus 2 2. Scolloped foot. Pes pinnatus 23. Pes tridaclylus vel curforius 24. Pes didablylus Thofe that cover the bafe of the tail. Thofe that lie from the vent to the tail. Criffum Linn&i, That rife from the /boulders, and cover 'the fides of the beck. The bind part of the head. A term Linnaeus ufes for a ftraight and flender bill. All the toes divided to the bottom. The outer toe more or lefs united to the middle one, par¬ ticularly confpicuous in the feet of the kingsfilher. The foot of the woodpecker formed for climbing. Clim ing feet. Such as thofe of the grebes. The webs indented in the fides, as in the coots and fcol- loped-toed fandpipers. Such as want the b ick toe. 25 • Semipdlmated. Pes femipalmatus 26. Ungue pojlico fejfdi 27. Digitis 4 omnibus palmatis Rojlrum cultratum 28. Unguiculatum 29. Lingua ciliata 30. Integra 31. Lumbriciformis Pedes compedes 32. Nares Lineares 33. Emarginatce In which the foot is compo* fed of two toes, obferved only in the oftrich. When the webs reach only- half way of the toes. When the hind claw adheres to the leg without any toe, as in the petrels. All the four toes connedled by webs, as in the corvorants. When the edges of the bill are very fharp, fuch as in that of the crow. A bill with a nail at the end, as in thofe of the goofandera and ducks. When the tongue is edged with fine briftles, as in ducks. When plain or even. When the tongue is long, round, and flender like a worm, as that of the woodpecker. When the legs are placed fo far behind as to make the bird walk with difficulty, or as if in fetters ; as is the cafe with the auks, grebes, and divers. When the noftrils are very- narrow, as in fea-gulls. With a rim round the nof¬ trils, as in the ftare. Sect OlCNTTHOJ, O GX. Plate CCCLXVUT. Se&. r. External I'artf. ORNITHOLOGY. S°S Sec t. I. External parts of Birds. A Bird may be divided into heady Ivdy, and limbs. I. HEAD. t. Bill (roJlrum)y is a hard horny fubftance, con¬ fiding of an upper and under part, extending from the head, and anfwering to the mandibles in quadrupeds. Its edges generally plain and (harp, like the edge of a knife, cultratedy as are the bills of crows ; but fome- times ferratedy as in the toucan ; or jagged, as in the gannet and fome herons; or peSimited, as in the duck ; or denticulated, as in the merganfers; but always de- ftitute of real teeth immerfed in fockets. The bafe in falcons is covered with a naked Ikin or cere {cera) ; in fome birds with a carneous appendage, as the turkey ; or a callous, as the curaffo. In birds of prey, the bill is hooked at the end, and fit for tearing : in crows, llraight and ftrong for pick¬ ing : In water fowl, either long and pointed, for ftri- king; or flender and blunt, for fearching in the mire ; or fiat and broad, for gobbling. Its other ufes are for building nefts ; feeding the young; climbing, as in parrots ; or, laftly, as an inftrument of defence or of¬ fence. 2. Nostrils, {naves'), the nice inftruments of dif- cerning their food, are placed either in the middle of the upper mandible, or near the bafe, or at the bafe, as in parrots ; or behind the bafe, as in toucans and bornbills : but fome birds, as the gannet, are deftitute of noftrils. The noftrils are generally naked ; but fometimes covered with briftles refkdted over them, as in crows, or hid in the feathers, as in parrots, &c. The forepart of the head is called the front (caps- Jlrwn); the fummit {vertex), or the crown : the hind part, with the next joint of the neck {nucha), the nape: the fpace between the bill and the eyes, which in he¬ rons, grebes, See. is naked, {loro), the Jlraps \ the fpace beneath the eyes [gene), the chcehs. 3. Orbits {orbhte), the eye-lids ; in fome birds naked, in others covered with fiiort foft feathers. Birds have no eye brows ; but the grous kind have in lieu a fcarlet naked fkin above, which are called fu- percilia ; the fame word is alfo applied to any line of a different colour that pafies from the bill over the eyes. Ears. Birds are deflitute of auricles or exter¬ nal tars, having an orifice for admifiion of found; open in all but owls, vvhofe ears are furnifhed with valves. 5. The Chin, the fpace between the parts of the lower mandible and the neck, is generally covered with feathers ; but, in the cock and fome others, has car- neous appendages called wattles {palearia) ; in others, is naked, and furniflied with a pouch, capable of great dilatation (facculus), as in the pelican and corvorants. 6. Nf.ck [collum), the part that connects the head to the body is longer in birds than in any other animals ; and longer in fuch as have long legs than in thofe that have fhort, either for gathering up their meat from the ground., or finking their prey in the water, except in web-footed fowl, which are, by reverfing their bodies, deftined to fearch for food at the bottom of waters, as fwans, and the like. Birds, efpecially thofe that have a long neck, have the power of rctradting, bending, or Vol. XIII. Part 21. flretching it out, in order to change their centre of External gravity from their legs to their wings. II. BOD Y. 1. Confifls of the Back {dorfum), which is flat* firaight, and inclines ; terminated by the 2. Rump {uropygium), furnifhed with two glands, fecreting a fhttifii liquor from an orifice each has, which the birds exprefs with their bills to oil or anoint the difeompofed parts of their feathers. Thefe glands are particularly large in moft: web-footed water-fowl; but ih the grebes, which want tails, they are fmaller. 2. Breast {peftuj), is ridged and very mufcular, defended by a forked bone {clavicula), the merry¬ thought. The fhort winged birds, fuch as grous, &c. have their breafts moft flefhy or mufcular; as they require greater powers in flying than the long-winged birds, fuch as gulls and herons, which are fpecifically lighter and have greater extent of fail. 4. Belly {abdomen), is covered with a ftrong'fkin, and contains the entrails. 5. The Vent, or vent-feathers {criffvm), which lies between the thighs and the tail. The anus lies hid in thofe feathers. HI. LIMBS. I. Wings, {ala), adapted for flight in all birds except the dodo, oftriches, caflbwary, great auk, and the pinguins, whofe wings are too fhort for the ufe of flying ; but in the dodo and oftrich, when extended, ferve to accelerate their motion in running; and in the pinguins perform the office of fins, in fwiraming or diving. The wings have near their end an appendage cover¬ ed with four or five feathers, called the bajlard wing, {ala notha), and alula fpuria. The leffer coverts {tedrices), are the feathers which lie on the bones of the wings. The greater coverts are thofe which lie beneath the former, and cover the quill-feathers and the feconda- ries. The quill feathers [primores), fpring from the fir ft bones (digit's and metacarpi) of the wings, and are 10 in number. Quill-feathers are broader on their inner than exte¬ rior fides. The fecondaries (fecondaria), are thofe that rife from the fecond part {cubitus), and are about 18 in number, are equally broad on both Tides. The primary and fecondary wing-feathers are called remiges. A tuft of feathers placed beyond the fecondarie* near the jundtion of the wings with the body. This in water-fowl is generally longer than the fecondaries, cuneiform, and may not unaptly be called the tertials. The fcapularsare a tuft of long feathers arifincr near the jundfion of the wings {brachia) with the body, and lie along the Tides of the back, but may be eafily diftinguiftied, and raifed with one’s finger. The inner coverts are thofe that clothe the under fide of the wing. The fubaxillary are peculiar to the greater Paradife. The wings of fome birds are inftruments of offence. The anhima of Marcgrave has two ftrong fpines in the front of each wing. A fpecies of plover, Edw. tab. 47. 3 S and 506 O R N I T H External and 280. has a Tingle one in each ; the whole tribe of Farts jacana, and the gambo, or fpur-winged goofe of Mr c”"~v Willoughby, the fame. 2. The Tail is the dire^or, or rudder, of birds in their flight ; they rife, fink, or turn by its means ; for when the head points one way, the tail inclines to the other fide : it is, befides, an equilibrium or counter- poife to the other parts ; the ufe is very evident in the kite and fwallows. The tail confifts of ftrong feathers (reftrices), 10 in number, as in the woodpeckers, See.; 12 in the hawk tribe, and many others ; in the gallinaceous, the merganfers, and the duck kind, of more. It is either even at the end, as in moft birds, or fork¬ ed, as in fwallows ; or cuneated.as in magpies, &c.; or rounded, as in the purple jackdaw of Catelhy. The grebe is deftitute of a tail, the rump being covered with down ; and that of the calfowary with the fea¬ thers of the back. Immediately over the tail are certain feathers that fpring from the lower part of the back, and are called the coverts of the tail (uropyguim ) 3. Thighs (femora), are covered entirely with fea¬ thers in all land-birds, except the butlards and the oftriches; the lower part of thofe of all waders, or cloven-footed water-fowl, are naked ; that of all web¬ bed-footed fowd the fame, but in a lefs degree; in ra¬ pacious birds, are very mufcular. 4. Legs (crura) ; thofe of rapacious fowls very ftrong, furnilhed with large tendons, and fitted for tearing and a firm gripe. The legs of fome of this genus are covered with feathers down to the* toes, fuch as the golden eagle; others to the very nails; but thofe of moll other birds are covered with feales, or with a flein divided into fegments, or continuous. In fome of the pies, and in all the paflerine tribe, the fldn is thin and membranous ; in thofe of web-footed water-fowl, ftrong. The legs of moft birds are placed near the centre of gravity: in land-birds, or in waders that want the back toe, exaftly fo ; for they want that appendage to keep them eredt. Auks, grebes, divers, and pinguins, have their legs placed quite behind, fo are neceffitated to fit eredt: their pace is aukward and difficult, v alking like men in fetters : hence Linnaeus ftyles their feet pedes compedes. ^ The legs of all cloven-footed water-fowl are long, as they muft wade in fearch of food : of the palmated, fliort, except thofe of the flamingo, the avofet, and the courier. 5. Feet (pedes), in all land-birds that perch, have- a large back toe: moft of them have three toes forward, and one backward. Woodpeckers, parrots, and other birds that climb much, have two forward, two back¬ ward ; but parrots have the power of bringing one of their hind toes forward while they are feeding them- felves. Owls have alfo the power of turning one of their fore toes backward. All the toes of the fivift turn forwards, frhich is peculiar among land-birds: the tridadfylous woodpecker is alfo anomalous, having only two toes forward, one backward ; the oftrich is another, having but two toes. 6. Toes (digiti). The toes of all waders are di¬ vided ; but, between the exterior and middle toe, is 7 O L O G Y. Sea. r. generally a fmall web, reaching as far as the firft External joint. ( Pam’ The toes of birds that fwim are either plain, as in the Angle inftance of the common water-hen or galli- nule ; or pinnated, as in the coots and grebes ; or en¬ tirely webbed or palmated, as in all other fwdmmers. All the plover tribe, or charadrii, want the back- toe. In the fwimmers the fame want prevails among the albatrofles and auks. No water- owl perch, except certain herons, the corvorant, and the fnag. 7. Claws (ungues). Rapacious birds have very ftrong, hooked, and (harp claws, vultures excepted. Thofe of all land-birds that rooft on trees have alfo hooked claws, to enable them to perch in fafety while afleep. The gallinaceous tribe have broad concave claws for feraping up the ground. Grebes have flat nails like the human. Among water-fowl, only the fkua, Br. Zool. II. p. 529. N° 243. and the black-toed gull, Br. Zool. II. p.532. N°244. have ftrong hooked or aquiline claws. All land-birds perch on trees, except the ftruthious and fome of the gallinaceous tribes. Parrots climb ; woodpeckers creep up the bodies and boughs of trees; fwallows cling. All water-fowl reft on the ground, except certain, herons, and one fpecies of ibis, the fpoonbxll, one or two fpecies of ducks and of corvorants. IV. FEATHERS. Feathers are defigned for two ufes ; as coverings from the inclemency of the weather, and inftruments of motion through the air. They are jalaced in fuch a manner as to fall over one another (tegulatim), fo as to permit the wet to run off, and to exclude the cold; and thofe on the body are placed in a quincuncial form; moil apparent in the thick-fkinned water-fowl, parti¬ cularly in the divers. 1. The parts of a feather are, the fhafts ; corneous, ftrong, light, rounded, and hollow at the lower part at the upper, convex above, concave beneath, and chiefly compofed of a pith. 2. On each fide the lhafts are the vanes, broad on one fide, narrow on the other; each vane confifts of a multitude of thin laminae, ttiff, and of the nature of a fplit quill. Thefe laminae are clofely braced toge¬ ther by the elegant contrivance of a multitude of fmall. briftles; thofe on one fide hooked, the ether ftraight, which lock into each other, and keep the vanes fmooth* compaift, and llrong. The vanes near the bottom of the fhafts are foft, unconne&ed, and downy. 3. Feathers are of three kinds: (1.) Such as com- pofe inftruments of flight; as the pen-feathers, or thofc- which form the wings and tail, and have a large (haft. The vanes of the exterior fide bending downward, of the interior upward, lying clofe on each other, fo that when fpread not a feather milTes its impulfe on the air. The component parts of thefe feathers are de- feribed before. (2.) The feathers that cover the body, which may be properly called the plumage, have little fhaft, and much vane; and never are exerted or relaxed unlefs in anger, fright, or iilnefs, (s) Sea II. *'kght- (3») The Dowrj fphfn/t), which is difperfed over ^ 1 ‘ the whole body amidit the plumage, is fhort, foft, iin« connefted, confifts of lanuginous vanes, and is intend¬ ed for excluding that air or water which may penetrate or efcape through the former. This is particularly ap¬ parent in aquatic birds, and remarkably fo in the an- ferine tribe. There are exceptions to the forms of feathers. The vanes of the fubaxillary feathers of the Parndife are unconne&ed, and the laminae diftant, looking like herring-bone. Thofe of the tail of the oflrich, and head of a Ipecies of curaffo, curled. Thofe of the cafibwary confill of two lhafts, arifing from a common Item at the bottom : as do at the approach of winter (alter moulting) thofe of the ptarmigans of arftic countries. The feathers of the pinguins, par¬ ticularly thofe of the wings, eonfift chiefly of thin flat fhafts, and more refemble fesdes than feathers; thofe of the tail, like fplit whale bone. Sect. II. Flight of Birds. The flight of birds is various; for, had all the fame, Hone could elude that of rapacious birds. Thofe which are much on wing, or flit from place to place, often owe their prefervation to that, caufe : thofe in the wa¬ ter, to diving: Kites, and many of the falcon tribe, glide fmoothly through the air, with fcaree any apparent motion of the wings. Moft of the order of pies fly quick, with a frequent repetition of the motion of the wings. The Paradife floats on the air. Woodpeckers fly aukwardly, and by jerks, and have a propenlity to fink in their progrefs. The gallinaceous tribe, in general, fly very flrong and fwiftly ; but their courfe is feldom long, by reafon of the weight of their bodies. The columbine race is of Angular fwiftnefs; witnefs the flight of the carrier-pigeoij. See Carrier-PI- geon. The paflerine fly with a quick repetition of flrokes; their flight, except in migration, is feldom diftant. Amohg them, the fwallow tribe is remarkably agile, their evolutions fudden, and their continuance on wing long. Nature hath denied flight to the ftruthious; but hill, in running, their fhort wings are of ufe, when ereft, to colleft the wind, and like fails to accelerate their motion. Many of the greater cloven-footed water-fowl, or waders, have a flow and flagging flight ; but moft of the lefler fly fwiftly, and molt of them with extended ' legs, to compenfate the fhortnefs of their tails. Rails and gallinules fly with their legs hanging down. Coots and grebes with difficulty are forced from the water; but when they rife, fly fwiftly. Grebes and alfo divers fly with their hind parts downwards, by reafon of the forwardnefs of their wings. Web-footed fowl are various in their flight. Several have a failing or flagging wing, fuch as gulls. Pin¬ guins, and a Angle auk, are denied the power of flight. ■Wild geefe, in their migrations, do not fly pell-mell, but in a regular figure, in order to cut the air with greater eafe ; for example, in long lines, in the figure of a > , or fomc pointed form or letter, as the ancients ORNITHOLOGY. 507 report that the cranes a {Turned in their annual migra- Nuptials, tions, till their order was broken by ftorms. Strymona /ic gelidum, Iruma pellente^ relinquuntf Potura / ^ Treatife on Eggs, illuftrated with accurate figures of 106 eggs. Mr Reyger of Dantzick publifhed, in 1766, apofthu- mous work by Klein, with 21 plates, elegantly co- loured: but much remains for future writers. Sect. IV. Syjlem. Considering the many fyftems that have been of¬ fered to the public of late years, Mr Pennant gives the preference to that compofed by Mr Ray in 1667, and afterwards pulifhed in 1678 ; but obferves, at the fame time, that it would be unfair to conceal the writer, from whom our great countryman took the original hint of forming that fyftem which has proved 0 L O G Y. ^ 5°9' the foundation of all that has been comjnfed fioce . / that period. He was a Frenchman, Belon of Mans, who firlt at¬ tempted to range birds according to their natures; and performed great matters, confidermg the unenlightened age he lived in ; for his book was publifhed in 1555. His arrangement of rapacious birds is as judicious as that of the lateft writers. For his fccond chapter treats of vultures, falcons, fhrikes, and owls : in the two next, he pafTes over to the web-footed water-fowl, and to the cloven-footed : in the fifth, he includes the gallinaceous and ftruthious; but mixes with them the plovers, buntings, and larks: in the fixlh ate the pies, pigeons, and thrufties ; and the feveiith takes in the reft of the paflerine order. Notwithftanding the great defefts that every natu- ralilt will at once fee in the arrangement of the lefier birds of this writer, yet be will obferve a reftitude of intention in general, and a fine notion of fyftem, which was left to the following age to mature and bring to perfe&ion. Accordingly Mr Ray, and his illuftrious pupil the honourable Francis Willoughby, affumed the plan ; but with great judgment flung into their pro¬ per ftations and proper genera thofe which Belon had confufedly mixed together. They formed the great divifion of terreftrial and aquatic birds; they made every fpecies occupy their proper place, confulting at once exterior form and natural habit. They could not bear the affected intervention of aquatic birds in the midft of terreftrial birds. They placed the laft; by themfelves; clear and diftindl from thofe whofe haunts and osconomy were fo different. The fu! joined fcheme of arrangement by Mr Pen- nant, is introduced with the following obfervations. “ Mr Ray’s general plan is fo judicious, that to me Pennant’s it feems fcarce poffihle to make any change in it for the better : yet, notwithftanding he was in a manner the founder of fyftcmatic zoology, later difeoveries ha,ve made a few improvements on his labours. My candid friend Linnaeus did not take it amifs, that I, in part, neglexR his example : for I permit the land- fowl to follow one another, undivided by the water- fowl, the grallse, and anferes of his fyftem f; but, in f See my generical arrangement, I molt pundtually attend^- to the order he ha-.i given in his feveral divifions, ex¬ cept in thofe of his anferes, and^'a few of his gralJoe. For, after the manner of Mr Briffon, 1 make a diftindt order of water fowl with pinnated feet, placing them between the waders or eloven-footed water-fowl and the web-footed. The oftrich, and land-birds with wings ufelefa for flight, I place as a diftindt order. The trumpeter (pfophia Linna‘t)y and the buftards, I place at the end of the gallinaceous tribe. Ail are land-birds. The firft multiparous, like the generality of the gallinaceous tribe ; the laft granivorous, fwift runners, avoiders of wet-places; and both have bills fomewhat arched. It muft be confeffed, that both have legs naked abovd the knees; and the laft, like the waders, lay but few eggs. They feem ambiguous birds that have affinity vV.h each order; and it is hoped that each naturalift may be indulged the toleration of placing them as fuits his own opinion.” TABLE 5*o» Arrange, *nent- O R N I T H TABLE c%f Petinant^s Arrangement, with thecor-1 refpondent ORDERS and GENERA in the Sys¬ tem* Naturae of Linn ecus. Division I. LAND-BIRDS. Div. IF. WATER-FOWL Order I. Rapacious. Accipitres Linn as. II- Pies. Pica. UP Gallinaceous. Gallinx. Divif. 1. IV. Columbine. Pafferes. V. Paflerine. Pajferes. VI. Struthious. f G“llT' [ Lrralla. 'Order VII. Cloven-footed 7 » or Waders, j Dir if. II. . VIIT. Pmnat.,1 f,.,t S ■'M""- Gralla. Anferes. j, I Gralla. O L O G Y, 69 Plover Charadriu* 73 Rail yoOyftereatcherHctmaiopm Sheathhill 71 Jacana Parra 75 Gall mule 7s Pratincole Hirundo Aa’fut Pulic? SeA IV, Arrange¬ ment. Ord.VTII. PINNATED-FEET. 78 Grebe Celymbut 76 Phalarope Trinr 7 7 Coot Fulica VIII. Pinnated feet. IX. Web-footed. DIV. I. 1 Vulture a Falcon 4 Shrike 5 Parrot 6 Toucan 7 Mot mot S Hornbill 0 Beefeater i@ Ani 11 Wattle 12 Crow 13 Ro'ler 14 Oriole 15 Grakle 16 Paradife Ord.I. rapacious. Vultur Falco 3 Owl Strive Ord. II. PIE S. Laniut PJittacus Pamphaflns Ratnphajios Bucercs Bupbana Crotophaga Corvus Coraciat Oriolus Gracnla Baradifxa 17 Curucui Trogon 18 Barbet Bucco 19 Cuckoo Cuculus 20 Wryneck Junx 21 WoodpeckerP/Var 22 Jacamar Aicedo 23 Kingsfifbcr Alceda 24 Nuthatch Sitta 25 Tody Todui 26 Bee-eater Merops 27 Hoopoe Upupa 28 Creeper C-rtbia 29 Honeyfucker Trcchilut 30 Cock 31 Turkey 32 Pintado 33 Curaffo 34 Peacock Ord. III. GALLINACEOUS. Fhajlnnus ■Mekagrit JAumida Crax Pa vo Ord. IV. 35 Pheafant Phafianus Grous Tetrao 37 Partridge ‘Pet, ao 38 Trumpeter Pfopbia 3 9 Bullard Oth COLUMBINE. 40 Pigeon Columba Ord.V. passerine. 41 Stare 42 Thrulh 43 Chatterer 44 Coly 45 Grolheak 46 Bunting 47 Tai.ager" 48 Finch Sturnut ‘Turdu; Air petit Loxia Loxia Emberiz* ‘Tanagra Fringilla Ord. VI. 57 Dodo DiJus 49 Flycatcher Mufcicapa 50 Lark Alauda 51 Wagtail Mot a cilia 52 Warblers Motacilla 53 Manakin Pip ra 54 Titmoufe Parut 55 Swallow Hirundo 56 Goatfucker Capnmulgut STRUTHIOUS. 58 Ollrich Strutbi* D I V. II. Ord. VII. CLOVEN-FOOTED, or WADERS 59 Spoonbill 60 Screamer 61 Jabirn 62 Boatbill 63 Heron P lot ale a P alaniedca Myfteria Cancroma A-rdta f>4 Umhre 65 Ibis 66 Curlew 67 Snipe 68 Sandpiper Scopus Briss. ‘Tantalus Scolopax Scolspax Tringa Ord. IX. WEB FOOTED. 79 Avofetta 80 Courier 81 Fiammant 82 Albatrofs 83 Auk 84 Guillemot 85 Diver 86 Skimmer 87 Tern Becurvirofira Currira Bkiss Pb f nicopter us Dhmedia utlca Colymbus Coly mbits Rhyncops Sterna 88 Gull Earns 89 Petrel Prtcellaria 90 Merganfer Mergus Anas C Diomede » 91 Duck 92 Pinguia 03 Pelican S4 Tropic 9J Darter \ Phaeton Pelicanus. P fact oh Plotus , .To tfie above, we have thought it neceffary to fub* jmn an extraft of the orders and genera as they ftand in the Index Ornitbo/ogicus and General Synopfis of birds as published by Mr Latham ; as from the copious manner in which he has treated the fubjed, and from a very great addition he has been enabled to make to this branch of natural hiftory, fome deviations from the plan of preceding authors, as well as the forma¬ tion of fome new genera, have neceffariiy arifen. TABLE of the ORDERS and GENERA of BIRDS, according to Mr Lathai^. Ind. Orn. AVIUM ORDINES. Div. I. I. Accipitres. II. Piece III. Palferes. IV. Collumbte V. Gallinae VI. Struthiones Div. II. VII. Grallse VIII. Pinnatipedes IX. Palmipedes AVIUM GENERA. Div. I. A FES TERRESTRES Ordo I ACCIPITRES. 1 Vultur 2 Falco 3 Strix Ordo II. pica;. 4 Lanins Sbribe 5 Pfittacus Parrot 6 Ramphaitos Toucan 7 Momotus Plot mot 8 Scythrops 9 Buceros Hornbill 10 buphaga Beefeater 11 Crotophaga Ani 12 Callaeas ’ Wattle-Bird 13 Corvus Crow 14 Coracias Roller Syn. of Birds. ORDERS OF BIRDS, Div. I. Rapacious Pies Pafferine Columbine Ga llinaceous Struthious s Div. II, Waders Pinnated feet Webfoooted GENERA OF BIRDS, Div. I. LAND BIRDS. Order I. RAPACIOUS. Fulture , Falcon Owl Order H„ PIES. 15 OHolus Se£t. IV. Arrange- Jnd< Qnu 15 Oriotus 16 Gracula I <7 Pavadifaea j8 Trogoa 19 Bucco 20 Cuculus 21 Yunx 22 Picas 23 Galbula 24 Alcedo 25 Sitta 26 Todus 27 Merops 28 Upupa 29 Certhia 30 Trochilus Ordo III. PASSERES. 31 Sturnus 32 Tardus 3 3 Ampeli8J 34 Colius 35 Loxia 36 Emberiza 37 Tanagra 38 Fringilla 39 Phytotoma 40 Mufcicapa 41 Alauda 42 Motacilla 43 sylvia 44 Pipra 45 Parus 46 Hirundo 47 Caprimulgus Ordo IV. COLUMB2E. 48 Columba Ordo V. GALLING. 49Pavo 50 Meieagris 51 Penelope 52 Numida 53 Crax • 54 Phafianus 55 Tinamua 56 Tetrao 37 Perdix 38 Pfophia 39 Otis Ordo VI. STRUTHIONES. 60 Did us 6.1 Struthio 62 Cafuarius 6.3 Rhea Qr'iote Grakle Paradife Bird Curucui Bnrbet Cuckoo IVryneck Woodpecker Jacamar Klngsjijher Nu/hatch Tody Bee-eater / Hoopoe Creeper Humming Bird. Order III. PASSERINE- Starling Thrufh Chatterer Coly Grojbeah Bunting Tanager Finch Ind. Orn, DIV. II. 4VES AgUBTICE. Ordo VII. GRALLiE. 64 Platalea 65 Palamedea 66 Myfterla 67 Cancroma 68 Scapus 69 Ardea 70 Tantalus 71 Numenius 72 Scolopax VSTringa _ 74 Charadrius 75 Curforius 76 Haematopus 77 Glareola 78 Rahus 79 Parra 80 Galiinula 81 Vaginalis Ordo VIII. PINNATIPEDES. Sytt' of Birds. DIV. II. WATER BIRDS. Order VII. WADERS. Spoonbill Screamer "Jabiru Boatbill Umbre Heron Ibis Curlew Snipe Sandpiper Plover Oyjler-catxher Pratincole Rail Jacana G allinule Sheath-bill Order VIII. With PINNATED* FEET. ORNITHOLOGY. Syn. of Bird:. 511 Arrange¬ ment. Flycatcher Lark Wagtail Warbler Manakin Tltmoufe Swallow Goatfucker Order IV. COLUMBINE. Pigeon Order V. GALLINACEOUS. Peacock Turkey Pintado Cur off0 Pheafant Tinamon Grous Partridge Trumpeter Bujlard Order VI. STRUTHIOUS. JDodo African OJlrich Cajfowary American Of rich. 82 Ph-alaropus 83 Fulica 84 Podicepo Ordo IX. PALMIPEDES. * Pedibus longioribus 85 Recurviroitra 86 Corrira 87 Phoenicopterus •j-f Pedibus brevioribus 88 Diomedea 89 Alca 90 Uria 91 Colymbus 92 Rhynchops 93 Sterna 94 Larus 95 Procellaria 96 Mergus 97 Anas 98 Aptenodytes 99 Pelicanus 100 Phaeton 101 Piotus In the latter arrangements of birds, although it can¬ not be faid that the authors have loft fight of their great predeceffor Linnaeus,yet the necefiity of deviating from him muft feem obvious, when the very great num¬ ber of fpecies which have come to our knowledge of- late years, fuflicient to'juftify fuch alteration, and fatisfy the moft fcrupulous advocates of this great man, is confidered. In his laft edition of the Syjlema Na¬ ture, Linnaeus enumerates about 930 birds only; but Phalarope Coot Grebe Order IX. WEB-FOOTEDa * With long legs Avofet Courier Flamingo ^ \ With fiort legs. Albatrofs 1 Auk Guillemot Diver Skimmer Tern Gull Petrel Merganfer Duck Pinguin Pelican Tropic Bird Darter O R N I T in the Index and Synopfis of Mr Latham, they have been increafed to very near 4000, a number never ima¬ gined by former writers on the fubjeft to exift in na¬ ture. M. Biberg, in his excellent treatife Oeconorrua Na¬ tural aman. acad. vol. 2. calculates the probability of the vegetable kingdom furnilhingas far as to,000 fpecies ; that of the vermes 2000 ; infe&s 10,000 ; amphi¬ bia 300; fiflies 2000 ; birds 2000 ; quadrupeds 2co. mem. H O L O G Y. oecC( iV# How far we have already exceeded this number In every Arrange- department the naturalift can teffify ; but how much farther the lilt may be increafed, no one will pre¬ tend to fore tel, whilft the ardour and indefatigable in- duflry of the prefent race of naturalilh, added to the taite for poflefiing new acquifitions, and exploring new countries, fliall continue. For Linnaus’i Arrangement* See Zoology. O R O <3rnitho» ORNITIIOMANCY, a fpccies of divination per- mancy formed by means of birds; being the fame with au~ Orobio. Sury- See Divination and Augury. y 1 ORNITHOPUS, in botany : A genus of the de- candria order, belonging to the diadelphia clafs of plants ; and in the natural method ranking under the 32d order, Papdionacea. The legumen is articulated, cylindrical, and bent in the form of a bow. ORNUS fraxinus, is that fpecies of the afh tree, in the Linnsean fyftem, which, according to Dor Ci- rillo of Naples, produces the manna. It is the afh tree, whofe fmalkr leaves are favved, with flowers ha¬ ving petals. In order to obtain the manna, thofe whofe bufinefs it is, in July and Auguft, make an ob¬ long incifion, and take off from the bark of the tree about three inches in length and two in breadth : they leave the wound open, and by degrees the manna runs out, and is almoft fuddenfy thickened to its proper conliftence, and is found adhering to the bark of the tree. This is colle&ed in bafkets, and called manna graja. When they want fine manna, they apply to the incifion of the bark thin ftraw, or fmalf bits of fhrubs ; fo that the manna in coming out runs upon thefe bodies, and is collected in a fort of regular tubes, which give it the name of manna in cannoli. ORuBANCHE, in botany: A genus of the angiofparmia order, belonging to the didynamia clafs of plants ; and in the natural method ranking under the 40th order, Perfonatee. The calyx is bifid ; the corolla ringent; the capfule unilocular, bivalved, and polyfpermous ; there is a glandule under the bafe of the germen. OROBIO (Don Balthafar), a celebrated Jew of Spain. He was carefully educated in Judaifm by his parents, who were Jews, though they outwardly pro- fefled themfelves Roman Catholics; abftaining from the practice of their religion in every thing, except only the obfervation of the fait of expiation, in the month Tifis or September. Orobio ftudied the fcho- lattic philofophy ufual in Spain, and became fo flailed ■in it, that he was made profefibr of metaphyfics in the univerfity of Salamanca. Afterwards, however, ap¬ plying himfelf to the ftudy of phyfic, he praftifed that art at Seville with fuccefs, till, accufed of Judaifm, he was thrown into the inquifition, and fuffered the moil dreadful cruelties, in order to force a confefiion. He himfelf tells us, that he was put into a dark dungeon, fo ftrait that he could fcarce turn himfelf in it; and fuffered fo many hardihips, that his brain beiran to be difturbed. He talked to himfelf often in this way . Am I indeed that Don Balthafar Orobio. who walked freely abouFin Seville, who was entirely at eafe, N° 253. O R O and had the blefiings of a wife and children ?” Some- OroVim times, fuppofing that his pall life was but a dream r—* and that the dungeon where he then lay was his true birth-place, and which to all appearance would alfo prove the place of his death. At other times, as he had a very metaphyfical head, he firlt formed argu¬ ments of that kind, and then refolved them ; perform¬ ing thus the three different parts of opponent, re- fpondent, and moderator, at the fame time. In this whimfical way he amufed himfelf from time to time, and conflantly denied that he was a Jew. After ha¬ ving appeared twice or thrice before the inquifitors, he was ufed as follows : At the bottom of a fubterra- neous vault, lighted by two or three fmall torches, he appeared before two perfons, one of whom was judge of the inquifition, and the other fecretary ; who, a/k¬ ing him whether he would confefs the truth ? protefl- ed, that in cafe of a criminal’s denial, the holy office would not be deemed the caufe of his death if he ffiould expire under the torments, but that it mull be imputed entirely to his own obltinacy. Then the executioner ftript off his clothes, tied his feet and hands with a flrong cord, and fet him upon a little ftool, while he palled the cord through fome iron buckles which were fixed in the wall; then drawing away the ftool, he remained hanging by the cord, which the executioner ftill drew harder and harder, to make him confefs, till a furgeon aflured the court of examinants, that he could not poffibly bear more without expiring. Thefe cords put him to exquifite tortures, by cutting into the flefh, and making the blood burft from under his nails. ^ As there was certainly danger that the cords would tear off his flelh, to prevent the worft, care was taken to gird him with fome bands about the breaft, which however were drawn fo very tight, that he would have run the rilk of not being able to breathe, if he had not held his breath in while the executioner pat the bands round him ; by which de- vice his lungs had room enough to perform their funftions. In the fevereft extremity of his fufferings, he was told that this was but the beginning of his torments, and that he would better confefs before they proceeded to extremities. Orobio added further, that the executioner, being on a fmall ladder, in order to frighten him, frequently let it fall again ft the Ihin- bones of his legs ; fo that the ftaves being fli irp, crea¬ ted exquifite pain. At lart, after three years confine¬ ment, finding themfelves baffled by his perfeverance in denying his religion, they ordered his wounds to be cured, and difeharged him. As foon as he had got liberty, he refolved to quit the Spanifti dominions ; and, going to France, was made profeffor of phyfic at Tbouloufc O R O [ 513 J O R P Orobus, Thouloufe. The thefea which he made as candidate prefence their right to the fucceflion. Phraates, the Orontium °ro^es' for this place were upon putrefadtion ; and he main¬ tained them with fo much metaphyfical fubtlety, as embarraffed all his competitors. He continued in this city for fome time, ftill outwardly profeffing popery : but at laft, weary of diffembling, he repaired to Am- fterdam, where he was circumcifed, took the name ol Ifaac, and profeffed Judaifm ; ftill continuing, how¬ ever, to pradtife phyfic, in which he was much efteem- ed. Upon the publication of Spinoza’s book, he defpifed a fyftem the falfenefs of which he quickly difcovered ; and when Bredenbourg’s anfwer to it came to his hands, Orobio, being petfuaded that the writer, in refuting Spinoza, had alfo admitted fome principles which tended to Atheifm, took up his pen againft them both, and publiflied a piece to that pur- pofe, intituled, Certamen philofoph'icum adverfus J. B. Prinapia. Bur the difpute which he held with the celebrated Philip Limhorch againft the Chriftian reli¬ gion made the greaceft noife. Here he exerted the utmoft force of his metaphyfical genius, and carried himfelf with great temper. The three papers which he wrote on the occafion were afterwards printed by his antagonift. in an account which he publilhed of the controverfy, under the title of Arnica CoUatio cum Jud gives ftill more importance to the pro¬ hibition ; for as Orpheus was the legillator and huma- nizer of the wild and favage Thracians, who were ca- nibals, a total abolition of eating human flefh could only be eftabliflied by obliging his countrymen to ab- ftain from every thing that had life. With refpedi to theology, Diodorus Siculus tells nw. Si- us, that his father (Eeagrus gave him his firft inftruc- tions in religion, imparting to him the myfteries ofcaPe Divine Legation, from fome infinuations to his difad- vantage in Diogenes Laertius. “ It is true (fays he), if uncertain report was to be believed, the myfteries were corrupted very early ; for Orpheus himfclf is faid to have abufed them. But this was an art the de¬ bauched rnyflas of later times employed to varnifh their enormities ; as the detefted paederafts of after-ages feandalized the blnmelefs Socrates. Befides, the ftory is fo ill laid, that it is detefted by the fureft records of antiquity : for in confequence of what they fabled of Orpheus in the myfteries, they pretended he was torn in pieces by the women ; whereas it appeared from the infeription on his monument at Dium in Macedonia, that he was ftruck dead with lightning, the envied death of the reputed favourites of the gods.” This monument at Dium, confifting of a marble urn on a pillar, was ftill to be feen in the time of Pau- fanias. It is faid, however, that his fepulchre was removed from Libethra, upon Mount Olympus, where Orpheus was born, and from whence it was transfer¬ red to Dium by the Macedonians, after the ruin of Libethra by a fudden inundation which a dreadful ftorm had occafioned. This event is very minutely re¬ lated by Paufanias. Virgil bellows the firft^place in his Elyfmra upon the legiftators, and thofe who brought mankind jrom a Jlate oj nature into fociety : Magnanimi heroes, nati melicribus amis. At the head of thefe is Orpheus, the moft: renowned of the European lawgivers, but better known under the charafter of a poet : for the firft laws being written in meafure, to allure men to learn them, and, when learnt, to retain them, the fable would have it, that by the force of harmony Orpheus foftened the favage inhabitants of Thrace O R P Dhr c ictus long a cum vejie facer do s Olloquitur numeris feptem diferirnina vocum : f unique eadem digitis, jampetHmt pulfat eburno. JEn. lib. vi. ver. 645. The feven ftrings given by the poet in this paftage to the lyre of Orpheus, is a circumftance fomewhat hiftorical. The firft Mercurean lyre had, at moft, but four flrings. Others were afterwards added to it by the fecond Mercury, or Amphion : but, according to feveral traditions preferred by Greek hiftorians, it was Orpheus who completed the fecond tetrachord, which extended the fcale to a heptachord, or feven founds, implied by the feptem diferirnina vocum. For the aflertion of many writers, that Orpheus added two new ftrings to the lyre, which before had feven, clafnes with the claims of Pythagoras to the invention of the oftachord, or addition of the found projlamlano- mcnos to the heptachord, of which almoft all antiqui¬ ty allows him to have been the inventor. And it is not eafy to fuppofe, that the lyre fhould have been reprefented in ancient fculpture with four or five ftrings only, if it had had nine fo early as the time of Or¬ pheus, who fiourifhed long before fculpture was known in Greece. Seethe article Lyre. With refpeft to the writings of Orpheus, he is men¬ tioned by Pindar as author of the Argonautics, and Herodotus fpeaks of his Orphics. His hymns, fays Paufanias, were very fhort, and but few in number : the Lycomides, an Athenian family’, knew them by heart, and had an excluiive privilege of finging them, and thole of their old poets, Mufeus, Onomacritus, Pamphus, and Olen, at the celebration of the Eleufi- nian myftcries ; that is, the piicfthood w'as hereditary in this family. Jamblicua tells us, that the poems under the name of Orpheus were written in the Doric dialect, but have iince been tranfdialefted, or modernifed. Jt was the common opinion in antiquity that they’ were ge¬ nuine ; but even thofe who doubted of it, gave them to the earlieft Pythagoreans, and fome of them to Py¬ thagoras himfclf, who has frequently been called the follower of Orpheus, and has been fuppofed to have adopted many of his opinions. Of the poems that are {till fublifting under the name of Orpheus, which were eollefted and publtftv- ed at Nuremberg 1702, by Andr. Chrift. Efchen- bach, and which have been fince reprinted at Leipftc 1764, under the title of op£X22 aiianta, feveral have been attributed to Onomacritus, an Athenian, w’ho flourilhed under the Pyfiftratidae, about yco years before Chrift;. Their titles are, 1. The Argonautics, an epic poem. 2. Eighty-fix hymns ; which are fo full of incantations and magical evocation, that Daniei. Heinfius has called them veram Satan# liturgiam, “ the true liturgy of the devil.” Paufanias, who made nc doubt that the hymns fubfifling in his time were coir" pofed by Orpheus, tells us, that though lefs elegant, they had been preferred for religious purpofes to tbofe of Homer. 3. Delapidilus, a poem on precious ft->nes. 4. Fragments, collefted by Henry Stevens. Orpheus has been called the inventor, or at leaft the prop gator, of many arts and doftrines among the Greeks, t. I he combination of letters, or the art of writing. 2 Mujic, the r 516 Orpheus. A * O R P [5 Omlicus, the lyre, or cithara, of feven ftnngs, adding three to Orp ment. that of Mercury. 3. Hexameter verfe. 4. Myfcerm 1 f ' and theology. 5. Me&ar.e. 6. Magic and dHhrn- tion. 7. rjlrology. Servius upon the itkth xi^neidj p. 4C0, fays Orpheus firft inftituted the harmony of the fpheres. 8. He is faid likewife to have been the firft who imagined a plurality of Koorldsy or that the moon and planets were inhabited. Orpheus, in ichthyology, the name of a hfa caught in the Archipelago. It is of a broad and flat figure, and of a fine purple colour ; its eyes are large and prominent, and its teeth ferrated ; it has only one fin on the back, and the anterior rays of that are prickly, the others foft to the touch; its anus is finall, and is faid to have no paffage for the temen. . This was the fifh called orphem by the ancients, but the modern Greeks call another filh by that name. It is a fpecies of the fparus, of a flat figure, but very thick, has a fmall mouth, and is covered with fmail but very rough feales, which adhere very tirmly to the fle(h; the tail is not forked ; it has fiefhy^lips, and very fmall teeth ; its back and fidcs are biack ; its belly white ; it has a large black fpot at the root of the tail ; its head is reddilh, and ics fins are veiy elegantly diverlified witn various colours ; it Las oiuy one back-fin, and that has the anterior ray prickly, the hinder ones not at all fo. It grows lomedmes to 20 pounds weight, and is much efteemed among the modern Greeks. _ ORP1MENT, auripigmentumy in natural hillory, a bituminous mineral compofed.of fulphur and arfenic, fometimes artificially produced, but found alfo native in the earth, and conliitutirigr one of the ores of ar¬ fenic. It is of two kinds, red and yellow, the former generally found in an indurated date; though Cronftedt fuppofes that it may alfo be met with in loofe fcaly powder, as it is fometimes met with in the (hops. It is commonly found in fhapelcfs maifes, very felclom cryftallifed ; though Baron Borne once found it in a polyhedral form on a blue clay in Hungary. The name red orpiment has been given by the more judi¬ cious to fapd&rach, and by the vulgar to red arfe- fenic; but it is to be reftrained only to this folfile, which is of a fine bright red, and of the regular tex¬ ture of the orpiments, and anfwering all their cha- rafters. It is a very beautiful fubftance Oi a hue bright red, very glofly, and a little traniparent, and is found in the Turkifh dominions, in the iflands of the Archipelago, and even in our own country, E)r Hill having received fome of it from Cornwall, under the name of red niundte. I he yellow kind is met with commonly of fhining flexible lamelix like mica, the fpecific gravity about 5 5^5* f^ buinswiih a bme flame, and contains about one tenth of its weight, of ful- jhur. It is found native in Hungary, and in many ptrts of Germany and the Turkish dominions: it is the common orpiment of the (hops, borne are of ophion, that the noxious qualities of the arfenic arc fo mich counteracted by the fulphur with which this fubilaice is mixed, that it may be fwallowed with fafety but Macquer pofitively afferts the contrary, ai\d ven ferioufly cautions againft its ufe, even though we be ertain that the orpiment is native. There is befides abroad-flaked, gold-coloured kind, well known among tl> ancients, as is plain fiom the defcription 7 3 11 R . of it left us by Diofcorides, and much efieemed at Orpine, prefent by our painters. This is found in feveral Qrrery- places, as in the iflands of the Archipelago, in the mines of Gofltlaer in Saxony, in fome parts of Tur¬ key, and the Eait Indies, and in its utmofl purity about Smyrna; this makes the'fineft of all yellows in painting. *1 he fmall-flaked, yellow kind, which is the common orpiment of the (hops, is alfo a fine colour, though greatly inferior to the former. The Indians ufe orpiment, com died with juice of lemons, with good fuccefs again ft fevers. The red aifenic, or realgar, is likewife found in an indurated ftate, and in irregular or flalacfitical mafles. It is either opaque or femitranfparent; fometimes it is found quite tranfparent, and regularly cryftallifed in odloedial prifms or pyramids; in which laft fornr it is called ruby of arfenic. Its fpeciiic gravity is about 3225 ; it contains 16per cent, of fulphur ; and its red colour is eaiily deftroyed by the nitrous acid. In or¬ der to analyie thefe two kinds of orpiment, they ought to be digefted in marine acid, adding the nitrous by degrees to alfift the folution. The fulphur is then left on the filter, while the arfenic remains in the fo- lution, from which it may b? precipitated in its metal¬ lic form by zinc, adding fpirit of wine to the folution. ORPINE, in botany. See Sedum. ORRERY, a curious machine for reprefenting the motions or phafes of the heavenly bodies. See Astro¬ nomy, n 13, 487, 488, and 490. The rtafon of its being called an Orrery, was this : Mr Rowley, a mathematical inftrument-maker, having got one from Mr George Graham, the original in¬ ventor, to be fent abroad with fome of his own in- flruments, he copied it, and made the firft for the earl of Orrery'. Sir Richard Steel, who knew no¬ thing of Mr Graham’s machine, thinking to do ju- ftice to the firft encowrager, as well as to the inventor, of fuch a curious inftrument, called it an Orrery, and gave Mr Rowiey the praife due to Mr Graham. It would be too great an undertaking here to give an account of the medianifm of the larger fort of or¬ reries, which reprefei.t the movements of all the hea¬ venly bodies; nor indeed can it be done either by diagram or defeription, to render it intelligible to the moft difeerning reader : but, inflead of that, we (hall exhibit an idea of the theory and ftru&ute of an ufe- ful, concife, and portable planetarium, which any gentleman m?.yr have made for a fmall expence, and will exhibit very juftly the motions of all the pri¬ mary planets about the fun, by wheel-work; and thofe that have fecondaries, or moons, may have them placed about their primaries moveable by the hand, fo that the whole (hail be a juft reprefentation of the . folar fyftem, or true ftate of the heavens, for any given time of the year. In order to this, we muft compare, and find out the proportion, which the periodical times, or revolutions of the primary planets, bear to that of the earth: which, with refped to the Georgium Skins, are not as yet fufficicntly afeertained; but thofe of the other pla¬ nets are fuch as are exprefied in the ta.ble below', where the firit column is the time of the earth’s period in days and decimal parts ; the fecond, that of the planets ; the-third and fourth are numbers in the fame propGition to each other: as, 365>255 Orrery Orrus. Plate Ccclxix 365>2S 365,25 365>25 365,25 o 88 224,7 686,9 4332,5 i°759,: R £ ? & ip R r 51 83 : 20, for Mercury. 1 ; 52 40 7 : 5 32, for Venus. 75, for Mars. 83, for Jupiter. : 148, for Saturn. If we now fuppofe a fpindle or arbor with fix woeels fixed upon it in an horizontal pofition, having the number of teeth in each correfponding to the numbers in the third column, viz. the wheel AM of 83 teeth, BL of 52, CK of 50 (for the earth), III or 40, BH of 7, anfl FG of 5 ; snd ano- ther fet of wheels moving freely about an arbor, ha¬ ving the number of teeth in the fourth column, viz. AN of 20, BO of 32, CP of 50 (for the earth), DO of 75, ER of 83, and FS of 148 ; then, if thofe two"" arbors of fixed and moveable wheels are made of the fize, and fixed at the diftance from each other, as here reorefented in the fcheme, the teeth of the former will t^lee tnofe of the latter, and turn them very freely when the machine is in motion. Thefe arbors, with their wheel, are to be placed in a box, of an adequate fize, in a perpendicular pofi¬ tion ; the arbor of fixed wheels to move in pivots at tiic top and bottom of the box 5* and the arbor of move- able wheejs to go through the' top of the box, to a piopei neigbr, on the top of which is to be placed a round ball gilt with gold to reprefent the fun. On each of the moveable wheels is to be fixed a foc- ket, or tube, afeending above the top of the box and having on the top a wire fixed, and bent at a proper diltance into a right angle upwards, bearing on the top a fmall round ball, reprefenting its proper planets. If then on the lower part of the arbor of fixed wheels be placed a pinion of ferew-teeth, a winch turn- ing a fpindle with an endlefs ferew, playing in the teeth of the arbor, will turn it with all its wheelsand thefe wheels will move the others about, with their planets, in their proper and refpeaive periods of time, very exadly. For while the fixed wheel CK moves its equal CP once round, the wheel AM will move AN a little, more than four times round, and fo will nearly exhibit the motion of Mercury; and the wheel FG will turn the wheel FS about ^— round, and fo will truly reprefent the motion of Saturn : and the fame is to be obferved of all the reft. Orrery (Earls of). See Boyle. ORRICE. See Iris. ORRUS, in botany, a name by which many of the ancients called the cultivated pine-tree, from its being remarkably full of juice. i he firft perron who has given us the name is Theo- phraftus ; but he is followed in it not only by the other Greeks, but alfo by the Latins, who have call¬ ed the fame tree for the fame reafon fapinus, a con¬ traction or abbreviation of the word fapapinus. the juicy pine. Pliny tells us, that this laft was the name ot the.manured pitch tree ; but in this he errs; for Vitruvius, and others, tell us, that the pine-nuts, nuCes P™*? whlcrh were eaten and ufed in medicine, were the fru.t of the>W,„„; m fapinu,; a„d it i evident, thnt chefe mud be the produce of a pine- tite, not of a pitch-tree, or any thing of the fir kmd. 0 O R T ORSATO (Sertorio), a celebrated antiquarian, hi- ftonan, and poet, was born at Padua in 1617, and early difeovered a tafte for literature and the fciences. * He applied himfelf to fearching out antiquities and ancient inferiptions ; for which purpofe he travelled through all the different parts of Italy, and in the mean time poetry was his amufement. When ad¬ vanced in age, he taught natural philofophy in the univerfity of Padua. . He was alfo a member of the academy of the Ricovrati. Having prefented to the doge and fenate of Venice the hiftory of Pa¬ dua, which he had dedicated to them, he made a long fpeech, during which he ftruggled with a na¬ tural want, and died of fuppreffion of urine, on the 3d of July 1678. He wrote a great number of books which are efteemed, feme in Latin, and others in Ita¬ lian. lie ought not to be confounded with John Bap- tljl Orsato, an able phyfician and antiquary, -who was born at Padua in 1673, and wrote, 1. Dijfertatio epijtuiaris cle Lucernis anUquis. 2. A diflertation De patera antiquorum. 3. A fmall treatife De Jlernis ve- terum ; and fome other works. ORSI (John Jofeph), an ingenious philologer and poet, was born at Bologna in the year 1652 ; and ftudied polite literature, philofophy, the civil law’, and mathematics. His houfe was a kind of academy, where many perfons of literature regularly afTembled! He wrote many ingenious fonnets, paftorals, and other works in Italian, and died in 1733. OR i EGAL cape, the moft northern promontory of Spain, where there is alfo a caftle of the fame name. W. Long. 8.20. N. Lat. 44.0. ORTjlLiUS (Abraham), a celebrated geogra¬ pher, bom at Antwerp, in 1527, was well nulled in the languages and the mathematics, and acquired fuch reputation by his fkiil in geography, that he was fur- named the Pto/emj of his time. Juftus Liplius, and moft of the great men of the 16th century, were Or- telms’s friends. He refided at Oxford in the reign of Edward VI. and came a fecond time into England 10 I577* His Theatrum Orbis wts the completed woik of tne kind that had ever been publifhed, and gained him a reputation equal to his immenfe labour in compiling it. He alfo wrote feveral other excel¬ lent geographical works ; the principal of which are his Thefaurus, and his Synonyma Geographica. The world is hkewife obliged to him for the Britannia, which he perfuaded Cambden to undertake. He died at Antwerp in 1598. ORFilLZ, a city in the province of Bearn, and per,laps the meaneft in all France. It was, however, till the Revolution, a bifhop’s lee. The cathedral is a wretched edifice, veT ancient, built in a barbarous ityle, and almoft in ruins. The remains of the caftlt °: Orthez are v;ry noble, and its fituation is fine, rn a hill, winch commands the town and a great extnt of country. The people call it Le Chateau de la Feme Jeanne, becaufe that queen refided in it during jiany years, in preference to the caftle of Pau. Some >f the apartments, though in ruins, may yet be entered The pnneefs Blanche, daughter to John king of Aragon and Navarre, was fhut up, and died here, i- 1464. ier brotner being dead, fhe became heiref to the ciown of Nivarre ; but her father having dePered her into the hands of her younger filter Leono* councefs 1 of Orfato o O R T I S' Orthodox of Foix, file confined the unhnppy Blanche in the II . eaftle of Orthez, and, after an imprifonment of two | ■ 0rt>’gia-, years, caufed her to he poifoned. ’ ORTHODOX, in church hiftory, an appellation given to thole who are found in all the articles of the Chriftian faith , ORTHOGRAPHIC p kojection of the Sphere, that wherein the eye is fuppofed to ’ e at an infinite diftnnce ; fo called, hecaufe the perpendiculars from any point of the fphcre will all fall in the common interfeftion of the fphere with the p»lane of t ie pro¬ jection. See Geography, n° 63, &c. and Projec¬ tion. ORTHOGRAPPIY, that part of grammar which teaches the nature and affections of letters, and the juft method of fpelling or writing words, with all the pro¬ per and neceffary letters, making one of the. four great- ell divifions or branches of grammar. See Grammar. Orthography, in geometry, the art of drawing or delineating the fore-right plan of any ol jedt, and of exprefiing the heights or elevations of each part. It is called Orlhograply, for its determining things by perpendicular lines falling on the geometrical plane. Orthography, in architedlure, the elevation of a building. _ Orthography, in perfpeAive, is the fore-right fide of any plane, /. e. the fide or plane that lies pa¬ rallel to a flraight line, that may be imagined to pafs through the outward convex points of the eyes, conti¬ nued to a convenient length. ORTHOPNOEA, a fpecies or degree of aflhma, where there is fuch a difficulty of refpiration that the patient is obliged to lit or Hand upright in older to be able to breathe. See Medicine, n° 291. ORTIVE, in aftronomy, the fame with eqjlern. The ortive or eaftern amplitude, is anarch of the hori¬ zon intercepted between the placewhere a flar rifes, and the call point of the horizon, or point where the ho¬ rizon and equator interfeft. ORTOLAN, in ornithology. See Emberiza. ORTNAU, a county of Germany, in the circle of Suabia, lying along the Rhine, and fcparating it from Alface. It is bounded on the fouth by Breflau, on the north by the margrav.’.te of Baden, and on the eaft by the duchy of Wirtemberg. It contains three imperial towns ; namely, Oflenburg, Gegen- bach, and Zell. It belongs partly to the houfe of Au- firia, partly to the bifhepric ot Spire, and partly to the county of Hannau. ORTYGIA, the birth-place of Diana, was a beau¬ tiful grove of trees of various kinds, chiefly cypreffes, near Ephefus ; on the coaft, a little up from the fea. This place was filled with flirines and images. The priefbs of the goddefs were eunuchs, and exceedingly refpe&ed by the people. A general affembly was held there yearly,and fpkndid entertainments were provided, and myftic facrifices folemnized. The Cenchrius, probably a crooked river, ran through it ; and. above it was the mountain Solmiffius, on which, it was fabled, the Curetes flood, and rattled on their ffiields, to divert the attention of Juno. The improved face of a country is perifhable like human beauty. Not only the birth-place of Diana and its fanftity are for¬ gotten, but the grove and buildings which adorned it appear no more; and perhaps, fays Dr Chandler, 9 1 O R Y the land has encroached on the fea, and the valley, in which Arvifia is, was once Ortygia, See Ephesus and Diana, &c. ORVIETO, a town of Italy, in the patrimony of St Peter, with a biffiop’s fee, and a magnificent pa¬ lace. It is the capital of the province of Orvietano, in the ecclefiattic ftate, in E. Long. 13. Eat. 43. It is a large ftrong town, fituated at the conflux of the Tiber and the Chiane, on a fteep hill, furrounded on every fide with rocks and precipices. To this fitua- tion it is owing that it has no fprings; but there is a very furprifing well cut into the rock, to fupply it with frefh water. The mules which bring up the wa¬ ter on their backs, go down by a ftaircafe of 1 jo fleps, and 60 windows, and come up by anotner, without meeting. The architect of this fmgular building was the famous Antonio da San Gallo, em¬ ployed'by Clement VII. At the entrance is this in- feription, Quod nature munimento divider at, indujlrla ad- fat. This city, called Herbarium by Pliny, and Ur- bevetanum by Procopius, is the fee of a bifhop fuffra- gan of Rome.' Phe cathedral, which is of Gothic ai * chitefture, is a handfome building, which was begun in 1260 by Nicolo Pifano. the front is adorned with fine ftatues, among the reft the Virgin Mary and the four Evangehfts, with a baffb-relievo of the laft judgment, by the faid Nicolo Pifano, and others reprefenting fome hiftories of the old teftament. The other half of the front is a furprifing work in Mofaic, by Scalzi, expreffing the hiftory of the new teftament. In the church there is a very fine organ, and a baffo- relievo of Raphael da Moute Lupo. Here is alfo a chapel, which was begun to be painted by F. Angelo, a dominican. and fimfhed by Luke Signorelli, whei e yon fee a very beautiful reprefentation of the laft judgment. Orvieto was once a potent and populous city, but is now much upon the decline. ORYZA, rice, in botany: A genus of the di~ gynia order, belonging to the hexandvia claiS of plants; and in the natural method ranking under the 4th or¬ der, Gramma. The calyx is a bivalved uniflorous glume; the corolla bivalved, nearly equal, and adhering to the feed. There is but one fpecies, namely the. fativa or common rice. This plant ia greatly, cultivated in molt of the eaftern countries, where it is the chn f fupport of the inhabitants ; and great quantities of it are brought into England and other European cou i- tries every year, where it is much efteemed foi pud¬ dings, &c. it being too tender to be produced in thefe northern countries without the affiftauce ot artihcic-d heat ; but from fome feeds which were formerly fent to Carolina there have been great quantities prouuced> and it is found to fucceed as well there as in the eattein countries. . . , . , This plant grows upon moift foils, where the ground can be flowed over with water after it is come up. So that whoever would cultivate it in this country ffiould fow the feeds upon a hot-bed ; and when the plants are come up, they fhould be removed into pots filled with light rich earth, and placed in pans of water, which fhould be plunged into a hot bed; and, as the water waftes, it muft from time to time be renewed again. In July thefe plants may be fet abroad in a warm iitu- ation, ft ill preferving the water in the pans, other- wife they will not thrive j and, toward the latter end o R Y r 520 1 ^ of Auguft, they will produce their grain, which will ty in the flomach. ripen tolerably well, provided the autumn proves fa¬ vourable. The leaves of rice are long, like the reed, and flefhy ; the flowers blow on the "top like barley ; but the feed which follows is difpofed in chillers, each of which is inclofed in a yellow hulk, ending in a fpiral thread, i he feed is oblong, or rather oval, and white. Rice is the chief commodity and riches of Damieta in Egypt. Dr Haflelquifl gives the following de- fcription of the manner in which they drefs and^fepa- rate it from the hulks. “ It is pounded by hollow iron peflles of a cylindrical form, lifted up by a wheel worked by oxen. A perfon fitting between the two pellles, pulhes forward the rice when the peftles are riling; another fifts, winnows, and lays it under the peftles. In this manner they continue working it un¬ til it is entirely free from chaff ami hulks. When clean, they add a 30th part of fait, and pound them together ; by which the rice, formerly grey, becomes white. After this purification, it is palled through a fine lieve to part the fait from the rice ; and then it is ready' for iale.,, Damieta fells every year 60,800 facks of rice, the greateft part of which goes to Tur¬ key, fome to Leghorn, Marfeilles, and Venice. Kice, according to Dr Cullen, is preferable to all other kinds ot grain, both for largenefs of produce, quantity of nourilhment, and goodnefs. This, he fays, is plain from macerating the different grains in water ; for, as the rice fwells to the iargeft fize, fo its parts are wore intimately divided. Rice is faid to affect; the eyes ; but this is purely prejudice. Thus it is alleged a particular people ot Alia, who live on this grain, are blind-eyed : but it the toil be fandy, and not much covered with herbage, and as thefe people are much employed in the field, this affeftion of their eyes may be owing to the Itrong refleftion of the rays of light fiom this fandy foil; and our author is the more in¬ clined to this opinion, becaufe no fuch effedl is ob- ferved in Carolina, where rice is very commonly ufed. 3 Di Percival informs us, that asa wholefome nourifh- ment rice is much interior to falep. He rligelled feveral alimentary mixtures prepared of mutton and water, beat up with bread, fea-bifcuit, falep, rice flour, fago pow¬ der, potato, old cheefe, &c. in a heat equal to that of the human body. In 48 hours they had all acquired a vinous fmell, and were in brilk fermentation, except the mixture with rice, which did not emit many air- bubbles, and was but little changed. The third day feveral of th& mixtures were fweet, and continued to ferment; others had loll their inteftine motion, and were four ; but the one which contained the rice was become putrid. From this experiment it appears that rice, as an aliment, is flow of fermentation, and a very- weak correftor of puttefadion. It is therefore an im¬ proper diet for hofpita! patients, but more particularly for bailors, m long voyages, becaufe it is incapable of preventing, and will not contribute much to check the progrefs of, that fatal difeafe the fea-fcurvy. Under certain circumllances, rice feems difpofed of itfelf, with¬ out mixture, to become punH. For by long keeping it fometimes acquires an offenfive foetor. &Nor, accord¬ ing to our author, can it be confidered as a very uutri- tlVN^253 ^ °n aCC0Unt of its difficult folubui- O R Y Experience confirms the truth ofOryzivera, this conclufion ; for it is obferved by the planters in 0:^)or11- the Weft Indies, that the negroes grow thin, and are lefs able to work, whilll they fubfill upon rice. ORYZIVERA, called the rice-bird of Catelby. It is about the fize of a fparrow, being fix inches three quarters long, with the head, and whole under fide ol the body, black ; hind part of the neck in fome pale yellow, in others white ; coverts of the wings and primaries black ; the laft edged with white j part of the fcapulars, lefler coverts of the wings, and rump, white ; back black, edged with dull yellow ; tail of the fame colours, and each feather fliarply point¬ ed : the legs are red. The head, upper part of the neck, and back, ot the female is yellowilh brown, fpot- ted with black ; under part of a dull yellow ; fides thinly tlreaked with black. Thefe birds inhabit in vail numbers the ifland of Cuba, where they commit great ravages among the early crops of rice, which precede thofe of Carolina. As foon as the crops of that pro¬ vince are to the-r palate, they quit Cuba, and pafs over the lea, in numerous flights, diredlly north, and are very often heard in their paffage by failors frequent¬ ing that courte. Their appearance is in September, while the rice is yet milky; and they commit fuch de- vaflations, that fortyacresof that grain have been totally mined by them in a fmall time. They arrive very lean. but foon grow fo fat as to fly with difficulty ; and when (hot often eurfl wilh the fall. They continue in Carolina not much above three weeks, and retire by tire time the rice begins to harden, going on to other parts, and flaying in each only fo long as the rice con¬ tinues green. They come into Rhode Ifland and New' It ork at the end of April, or the fecond week in May, frequenting the borders of fields, and live on infects, &c. till the maize is fit for their palate, when they begin by pecking holes in the fides of the hufks, and after fatiating themfelves go on to another, which leaves room for the rain to get in, and effe&ually fpoils the plants. They continue there during the furnmer, and breed, returning as autumn approaches to the fouthvvard. Ehe males and females do not arrive to- gether ; the females come firfl. 1. hey are elleemed to be the mofl delicate biids of thofe parts, and the male is faid to have a fine note. This fpecies is known in the country by the names of Bob Lincoln and Con- quedlc ; likewife called by fome the Wbite-backed Maize- thief , OSBORN (crancis), an eminent Englifh writer in the 17th century. He was educated in a private manner ; and at ripe years frequented the court, and was mailer of the horfe to William earl of Pembroke. Upon the breaking out of the civil wars, he adhered to the parliament party, and had feveral public employ¬ ments conferred upon him. In the latter part of his h.e he lived at Oxford, in order to print feveral books, and to look after his fon, for whom, by the favoiw of the parliament, he procured a fellow (hip in All- fouls college. His Advice to a fon, fo foon*as it was publifried, being complained of to Dr John Tenant vu_e chancellor of Oxford, as of irreligious tendency, tneie was a propofal made to have it publicly burnt; but that taking no effiedl, it was ordered that no book- felier or others fhould fell it, which only made it fell the falter. He wrote aifo Hiilorical Memoirs of the reigns fQ S C t 5*1 ] O S I Ofchopho* reigns of queen Elizabeth and king James I.; a Dif- m, courfe on the greatnefs and corruption of the church t ofa!la- of Rome ; a Difcourfe upon Machiavel, 8cc. He died in 1659. OSCHOPHORIA, a feftival obferved by the Athenians. It receives its name tju ra; from carrying boughs hung up with grapes,” called Its original infliuition is thus mentioned by P/ut. in The/. Thefeus, on returning from Crete, forgot to hang out the white fail, by which his father was to be apprized of his fuccefs. This negle£t proved fatal to iEgeus, for he threw himfelf into the fca, and perilhed. Thefeus no fooner reached the land, than he fent a herald to inform his father of his fafe return, and in the mean time he began to make the facrifices which he had vowed to make when he hrft fet fail from Crete. The herald, on his entrance into the city, found the people in great agitation. Some lamented the king’s death, while others, elated at the fudden news of the victory of Thefeus, crowned the herald with garlands in token of their joy. The herald car¬ ried back the garlands on his Uaff to the fea fhore ; and, after waiting till Thefeus had finifhed his facri- fice, he related the melancholy account of the king’s death. Upon this the people ran in crowds to the city, fhovving their grief by cries and lamentations — From this circumftance, therefore, at the fealt of Of chotrhoria, not the herald hut his ftaff is crowned with garlands, and all the people that are prefent always exclaim <«> ««• the firft of which exprefles hafte, and the others a confternation or deprefixon of fpirits. The hiftorian further mentions, that Thefeus, when he went to Crete, did not take with him the ufual number of virgins, but that in the place of two of them, he took two youths of his acquaintance, whom he caufed to pafs for women, by difguifing their drels, and by accuffomint them to the ointments and perfumes of women, as well as by a long and fuc- cefsful imitation of their voice. The impofition fuc- teeded ; their fex was pot difeovered in Crere ; and when Thefeus had triumphed over the Minotaur, he with thefe two young men led a proceffion, with branches in their hands, in the fame habit, which is fb.ll ufed at the celebration ot the fettival The branches which were carried were in honour of Bacchus or Ariadne, or becaufe they returned in autumn, when the grapes were ripe. Befides this procellion, there was alfo a race, in which young men only whole pa¬ tents were both alive were permitted to engage. It was cuitom*ry for them to run from the temple of Bacchus to that of Minerva, which was on the le i-lhore. The place where they flopped was called o^o^ev. becaufe the boughs which they carried in their hands were de- pofited there The rewards of the conqueror was a cup called t “ five fold,” becaufe it contained a mixture of five different things, wine, honey, cheefe, meal, and oil. OSCILLA, fmall images of wax or clay made in the lhape of men or women, and confecrated to Saturn, to render him propitious. '1 he word isfometimes ufed to fignify a kind of mafks fcooped from the bark of trees, and worn by the performers of comedy in the juder ages of Rome. In this fenfe we find it in Virg. Geo. ii. 386. It alfo fignifies little heads or images of Bacchus, which the countrymen of old hung upon trees, that the face might turn every way, Vox.. XIII. Fart II. out of a notion that the countenance of this god gave Ofeneyr. felicity to themfelves, and fertility to their vineyards. , ^ An allufion to this opinion and cuftom is alfo found in Virgil, Geo. ii. 388. OSENEY-island, in England,is formed by the river Ifis in the meadows near Oxford, where a magnificent abbey was eredled, at the infligat on of a concubine of King Henry I. to atone for her fins; and the faid king built a palace there, wherein King Richard I. was born, which Edward II. converted into a mona- ftery. OSIRIS, in mythology, one of the gods of ancient Egypt, and very generally believed to have been the fun, or at lead the mind adluating that luminary. The Egyptians derived all things from two prin¬ ciples, an adive and a pajfive. Their aftive principle, according to the learned Jablonfki*, was an infinite * and eternal fpirit; and their pufiive principle was night. This fpirit they confidered fometimes as a male, fome- times as a female, divinity, and occafionally they attri¬ buted to it hath /exes ; but it does not apoear to have been the obje<£l of their worfhip. It firall be fhown elfewhere (fee Polytheism), that the earlie't objefta of pagan adoration were the fun, moon, and planets $ and that the philofophers and prieils of ancient Egypt worfiiippec! the fun by the name of Oftris, may be proved by numberlefs teftimonies from the moft au¬ thentic records of antiquity. Diogenes Laertius af¬ firms, that they held the fun and moon for divinities, and that they called the latter Ifs; and Macrobius fays exprefsly, “ Nec in occulto eft, neque aliud efle OJlrin quam Salem, nec IJim aliud effe quam terramP The fame writer informs us, that in the hieroglyphic writings of ancient Egypt, “ Ofiris was reprefenced by a feeptre and an eye,” to denote that this god was the /i/n looking down from heaven on all things upon earth. It muft not, however, be concealed, that fome of the ancients, and a few of the moft learned moderns, have contended, that by OJirls the Egyptians under- ftood the Nile or fpirit of the Nile, whilft others have confounded him with the Grecian Bacchus. Scaliger and Selden have adopted the former of thefe opinions, and Servius on Virgil has given his countenance to the latter. But that they are all miftaken, has been evin¬ ced by Jablonlki in fuch a manner as to enforce the fuileft. convidlion: “ When the Egyptians, in their facred books, fometimes give the name of OJiris to the Nile and its wonderful increafe during the heat of firm- mer, they mean nothing more (fays he) but to attri. bute to their god Ofiris the gift which fertilizes their country.” This they would the more readily do that tsey believed the Nile to have its fource in heaven. Hence Eufebius tells usf, onpir eo-7* fome fay, in the very room in which he was born. The ' ' biftropric is fituated in the centre of the circle; the north part of it is marfhy, but at the fouth extre¬ mity of it are fome mountains. The inhabitants have confiderable raanufa&ures of linen, and a good breed of cattle; and of their hogs, for which they are re¬ markable, is made the belt Weftphalia bacon. Not far from this city are to be Len the ruins of an old church and caftle, called Beelern^ which fome fay was built by King Witekind upon his converfion ; and about two miles from it lies the monaftery of Ruile, en the bank of a like fo deep, that report fays it could never yet be fathomed. This was the firft town in Weftphalia which received the Lutheran doftrine. 0snaburg Ijland, one of the ifiands in the South Sea, difeovered by Captain Wallis in 1767- *s a high, round illand, not above a league in circuit ; in fome parts covered with trees, in others a naked rock. S. Lat. 22.48. W. Long. 141. 34. OSORIUS (Jerom), was born of a noble family at Lifbon, 1500. He was educated at the univerfity o£ Salamanca, and afterwards ftudied at Paris and Bo¬ logna. On his return to Portugal he gradually rofe to the bifhopric of Sylves, to which he was appointed by Catherine of Anftria, regent of the kingdom in the minority of Sebaftian. At the requeft of cardinal Henry of Portugal, he wrote his Hiftory of King E- manuel, and the Expedition of Gama; which his great contemporary Camoens made at the fame time the fubje& ol his immortal Lufiad ; a poem which has at length appeared with due luftre in our language* being tranflated with great fpirit and elegance by Mr Mickle. It is remarkable that the hiftory of Oforius* and the epic poem of Camoens, were publifhed in the fame year, 1572 : but the fate of thele two great au* thors were very different; the poet was fullered ter perifti in poverty, under the reign of that Henry who patronized the hiftorian : yet allowing for the diffe¬ rence of their ptofefilons, they piffleffed a fimilarity of mind. There appear many traces of that high heroic fpirit even in the prieft Oforius, which animated the foldier Camoens : particularly in the pleafure with ^ which he feems to deferibe the martial manners of hi# countrymen under the reign of Emanuel. “ In that age (fays the hiftorian in the clofe of his manly work), poverty and fadnefs were baniflied from Portugal. Com*, plaints were never heard ; but every place, from the court to the cottage, refounded with mirth and mufic. Illicit love was unknown ; nor would the ladies lifter! to themoft honourable addreffes of fuch youths ns had not fignalized themfelves in war. No young man about court, however noble by birth, was permitted to wear the drefs of manhood till he had palled over into A- frica, and thence brought back with him fome animal efteemed for its rarity ; and fuch was the hardy edu¬ cation of the nobilit y in that age, that many of them travelled everywhere in quell of adventures.” This is a ftriking picture of the manners of chivalry, to which Portugal owed much of its glory in that fplen- did period. '1 here is one particular in the charafter of Oforius, which, confidering his age and country, deferves the highett encomium ; and that is his tole¬ rating fpirit. In the firft book of his hill or y, he 3 U 2 fpeaks OSS [ '5H ] OSS QJWrius fpeaks of Emanuel’s cruel perfecufion of the Jews in c J) the following generous and exalted language : “ 'i’his at' , (fays he) was authorifed neither by law nor by reli¬ gion. Can men be compelled to believe what they re- jedd with abhorrence ? Do you take upon you to re- flrain the liberty of the will, or to fetter the under- llanding ? Such an attempt muft be unfuccefsful; and is not acceptable to Chrill, who expe&s from man the devotion of the heart, and not that formal worfhip which is the offspring of pains and penalties. He wifhes them to ftudy his religion, and adopt it from conviftion, not from terror: for who does not fee that forced belief is mere hypocrify ?” Oforius is faid to have ufed many arguments to diffuade Sebaftian from his unfortunate expedition into Africa, and to have felt fo deeply the miferies which befel the Portugucfe after that fatal event, that his grief was fuppofed to accelerate his death. He expired in 1580, happy, fays De Thou (who celebrates him as a model of Chri- ftian virtue), that he died juft before the Spanifh army entered Portugal, and thus efcaped being a witnefs to the defolation of his country.—His various works were publifhed at Rome in 1592, by his nephew Oforius, in four volumes folio, with a life of their author. A- mong thefe are two remarkable productions; the firft, An Admonition to our QjJeen Elizabeth, exhorting her to return into the Church of Rome ; the fecond. An Effay on Glory, written with fuch claffical purity, as to give birth to a report, that it was not the compo fition of Oforius, but the laft work of Cicero on that fubjexi. OSPREY. See Falco, fp 17 OSSA, a lofty mountain of Theffaly, near the Pe- neus, which runs between this mountain and Olympus; famous in the fabulous ftory of the giants (Homer, Virgil Horace, Seneca, Ovid). The bending and un¬ bending of its pines, on the blowing of a ftrong north wind formed a clafhing found like thunder (Lucan). It was once the refidence of the Centaurs, and was for¬ merly joined to Mount Olympus; but Hercules, as fome report, feparated them, and made between them the celebrated valley ofTempe, This fepatation of the two mountains was more probably eff't&ed by an earthquake which happened about 1885 years before the Chriftian era. Its grcateft celebrity arifes from its being one of thofe mountains which the giants in their wars againft the gods heaped up one on the ot her tofcale the heavens with more facility. A town of Macedonia. OSS AT (Arnauld de), born in the diocefc of Auch in x >36, of mean parentage, was taken notice of by a gentleman in the diocefe, who made him ftudy with his ward the Lord of Caftlenau de Magnoac. He ftudied the law at Dijon under Cujace, and applied himfelf to the bar at Paris. He was fecretary at Rome to M. de Foix, archbifhop of Thouloufe ; to car- Offian, dinal Efte; and afterwards to cardinal de Joyeufe, by the French king’s exprefs command. A ter rifing to the higheft dignities both in church and date, in 1599 he was created a cardinal by pope Clement VIII. He died in 1604. •^kn enunent French writer gives him the following chara&er : “ He was a man of prodi¬ gious penetration; applied himfelf fo clofely to affairs, and efpecially was fo judicious in forming his refolu- tions, that it is almoft impoffible to find out one falfe ftep in the many negociations in which he was con¬ cerned.” His woiks, and efpecially his letters, have been much efteemed in the leatned world. OSSIAN, the fon of Fingal, a celebrated Celtic poet, who flourifhed about the end of the fecond and beginning of the third century. Several incidents in his poems point out this as his sera: particularly the engagement of Fingal with Caracul, or Caracalla, the fon of the emperor Severus, ftyled by Oflian, The Son of the King of the World. M. Tillemont fixes the ele¬ vation of Catacalla to a (hare in the government to the year 198, and the afibciation of his brother Geta to 208.. About which time Gibbon fixes the Caledonian war, and fpeaks thus upon the fubjeft: “ This Ca¬ ledonian war, neither marked by decifive events, nor attended with any important confequences, would ill deferve our attention ; but it is fuppofed, not without a confiderable degree of probability, that the invafion of Severus is connedfed with the moft fhining period of the Britifh hiftory or fable. Fingal, whofe fame, with that of his heroes and bards, has been revived in our language by a recent publication, is faid to have commanded the Caledonians in that memorable junc¬ ture, to have eluded the power of Severus, and to have obtained a fignal vidtorv on the banks of the Ca- tun, in which the fon of the King of the Worlds Cara¬ cul, fled from his arms along the fields of his pride *. * ojjian->. Something of a doubtful mill ftill hangs over thefe Highland traditions ; nor can it be entirely difpelled vol. i. by the moft ingenious refearches of modern criti- P-175» cifm(A): but if we could with fafety indulge the. pleafing fuppofition, that Fingal lived, and that Olfian fung, the linking contrail oi the fituation and manners of the contending nations might amufe a philofophic mind. The parallel would be little to the advantage of the more civilized people, if we compared the un¬ relenting revenge of Severus with the generous cle¬ mency of Fingal; the timid and brutal cruelty of Ca¬ racalla, with the bravery, the tendernefs, the elegant genius of Oflian ; the mercenary chiefs who, from mo¬ tives of fear or intereft, ferved under the Imperial ftandard, with the free-born warriors who ftarted to arms at the voice of the king of Morven : if, in a word, we contemplated the untutored Caledonians 3 glowing (a) “ That the Caracul of Ofiian is the Caracalla of the Roman, hiftory, is perhaps the only point of Britifti antiquity in which Mr Macpherfon and Mr v hitaker are of the fame opinion ; and yet the opinion is not without difficulty. In the Caledonian war, the fon of Severus was known only by the appellation of Antoninus ; and it may feem ftrange, tnat the Highland bard fhould delcribe him by a nick-name, invented four years afterwards, fcarcely ufed by the Romans till after the death of tiiat emperor, and feldom employed by the moft ancient hiftorians. See Dion. i. Usvii. p. 1317. Hilt, Auguft. p. 89. Aurel. Vidtor. Eufeb. in Chroit. ad ann. 214. w * Oilifin, Fin gal, • iv. OSS glowint? with the warm virtues of nature*, and the de generate Romans polluted with the mean vices of wealth and 11 very.” The date o'- this aftion, if the poems be true* is rather confoundin.r: for the next expedition, which is p -oduce i to fix the time in which Offian ftourifhed, was conduced by Ofcar < again ft the ufurper Carau- fius, the Caros of Offi n), who did not affume the purple till fo late as the year 287. This account indeed correfponds pretty well with the account ^gi* ven by Irifh hiltor'es, which place the death ot tin- gal in the year 283, and that of Ofcar (who died many years before h!8 ‘ather Ofiian) in the year 296. Thefe hints are not thrown out becaufe we think th y militate againft the authenticity of the poems ; tor diftant though thefe dates he, it is yet poffihle to re¬ concile them. Old age was and is very common in thofe regions; and Offiau himfelf, e are told, was m inilance of great longevity- Indeed at fuch a diftan e of time it cannot be txpeAed that we fhould give either a very particul ir or a very exaA account of Ofliun and his heroes. Were there no dou ts remaining of the truth of the faAs, it is Itill natural to fuppofe tuat they mu ft have fuffered obfeurity through the ruft ©f time, and above all through the negleA of the poems, which till lately were unknown The find expedition on which Offian s father fent him was, to raife a ftone on the banks of Crona, to perpetuate the memory of a viAory winch the king oi Morven had obtained at that place The Highlanders talk of this as being emblematical of that immortality which heroes were to receive from his future compofi- tions. In this expedition he was accompanied by Tofcar, father of the beautiful Malvina, the amiable companion of his grief, after the death of her beloved Ofcar, his fon. It appears Irom his poems, that, in one of his early expeditions to ■ reland, he had fallen in love with and married Evirahin, daughter to Bran- no, petty king of Lego. . “ I went in fuitof the maid of Legp’s fable furge ; twelve of my people were there, the fons of ftreamy Morven. We came to Branno, friend of ftrangers ; Branno of the founding mail.—* From whence (he faid) are the arms of fteel? Not eafy to win is the maid that has denied the blue¬ eyed fons of Erin. But bleft be thou, O fon of Tin- gal! happy is the maid that waits thee. I hough twelve daughters were mine, thine were the choice, thou fon of fame.’—Then he opened the hall of the maid; the dark-haired Evirallin This Evirallin was the mother of his fon Ofcar, whofe exploits he celebrates in m^ny of his poems, and whofe death he laments in the firft book of Temora. Evirallin died feme time before Ofcar (Fingal, B. iv.), who feems to have been her only child; and Offian di l not many afterwards : fo that his pofterity ended in the death of Oicar; who feems to have died as he wa^ about to be married to Malvina, the daughter of Tof. ar. Se¬ veral of her lamentations for her lover are recorded by Offian, which paint her grief in the ftrongeft and moft beautiful colours. “ It is the voice of my love » few are his vifits to my dreams. But thou dwelleft in the foul of M )Ivina fon of mighty Offian. My fighs arife with the teams of the tail; my tears defeend with the drops of night. I was a lovely tree in thy pre- fence, Ofcar, with all my branches round me: but ©fllim. 525 ] OSS thy, death came like a bhft from the defert, and laid my green head low; the fpring returned with its "^ fhowers, but no green leaf of mine arofe.” Poem of Croma. The principal refidence of Offian was in the vale of Oona, now Glenco in Argylefhire See Fiscal His poems relate many of his expeditions to Ire¬ land, Scandinavia, Clyde, and Tweed or 1 eutha. His exploits on thefe occafions, after making a large allowance for poetical exaggeration, ffiow him to have been no lefs a warrior than a poet: (See Ossian’s Works, in the poems C alt bon and Colma/, Latbmonf Be’-rathon, &c By thefe expeditions, which were al¬ ways undertaken for the relief of the diftrefled, the mind of Offim feems to have been cultivated and en¬ larged beyond what is ufually to be met with in fo rude a period of fociety as that in which he lived. Hia poems breathe, throughout, fuch a fpirit ot generolity and tendernefs, efpecially towards the fair fex, as ia feidom or never to be met with in the compofitions of other poets who lived in a more advanced ftate ot civi- lifation. He lived to an extreme old age ; having fur- vived all his family and friends, many of whom perifh- ed by a fatal accident, recorded in one of his poems called the fall of Tura *. Malvina, alone, the love of his fon Ofcar, remained with him till within a few years of his death, and paid him every attention that could be expeAed from the tender relation in which fine flood to him. To her he addreffes m my of his poems, which feem to have been compofed for the moft part in his old age. Her death is p ithetically la¬ mented by him in the poem of Berrathon: towards the cloft of which, he gives the prefages of his own de¬ parture; an event which he often wishes for, under the blmdnefs and other calamities oi his declining years. “ Roll on, ye dark-brown years, for ye bring no joy on your courle. Let the tomb open to Oifi m, for his ftrength has failed. The fons of the fong are gone to reft : my voice remains, like a bhft; that roars lonely, on the fea furrounded rock, after the winds are laid. The dark mofs whifiles there, and the di¬ ftant mariner fees the waving treesf. ’ ‘‘ But Offian f »oemoi: is a tree that is withered. Its branches are blatfed Berrathon. and bare ; no green leaf covers its boughs. From its trunk no young (hoot is fetn to fpring. The breeze whiftles in its grey mofs : the blaft ffiakes its head af age. -The ftorm will Toon overturn it, and ftrew all its dry branches with thee, O Hermid ! and with all the reft of the mighty dead, in the green winding vale of Cona J.” • _ t Galic An*- It is not certain at what age Offian died; but fromtiq itUr, his having been long blind with years, and from the many contrails between his piefent and pall fituations, er"'1 * in poems compofed, as it would appear, at a coanderaoie diftance of time from each other, it is moft likely he lived to an extreme old age. The cut rent tradition is, that he died in the houfe of a Culdee, called the Son of •jiprn, with whom he is faid to have held feveral con¬ ferences about the doAnnes of Chriftianity. One of thefe dialogues is ftill preferved, and bears the genuine marks of a very remote antiquity ; (Dlffertation pre¬ fixed to Offian's Works). Several ot Offim s poe sare addieffed to this fon of Alpin, who was probably one of thofe Chriftians whom the perfecution under Diondian had driven beyond the pale of the Roman empire. OfiTiafi, t OJpan s Work,, |>oera of Jicrrat/ien. OSS i The poems of Ofllan, though higheft efteem by thofe who knew them, were allowed to remain in the obfcurity of their original Gaelic, till Mr Macpherfon, about 30 years ago,°tranflated a col- leflion of them into Engliih, which immediately at¬ tracted the attention of every perfon who had a true tafte for poetry. Dr Blair, in particular, introduced thefe poems into the world with thofe critical remarks which do no lefs honour to himfelf than to the poet. According to that eminent critic, the two great cha- ratferiflics of OfBan’s poetry are tendernefs and fub- limity. OfTnn is, perhaps, the only poet who never relaxes, or lets himfelf down into the light and anm- fing drain He moves perpetually in the high region of the grand and pathetic. The events which he re¬ cords are all ferious and grave; the fcenery wild and romantic. We find not in him an imagination that fports itfelf, and dreffes out gay trifles to pleafe the fancy. His poetry, more perhaps than that of any other, deferves to be flyled the poetry of the heart. It is a heart penetrated with noble fentiraents, with fub- Ime and tender paffions ; a heart that glows and kin¬ dles the fancy ; a heart thst is full, and pours itfelf forth. Of all the great poets, Homer is the one whofe manner and whofe times come the neared to Offian’s. t Srf ] OSS always held in the mutual feall, and Hlten together to the fonjr of their OtfU.i, bards 1 v——/ But the fublimity of moral fentiments, if they want- p°t’nt ed the foftening of the tender, would be in hazard of * giving a ftiff air to poetry. It is not finough that w^e admire. Admiration is a cold feeling in comparif of that deep intered the heart takes in tender and pa* thetic feenes. With feenes of this kind OflHn abounds • and his high merit in thefe is incontedable. He may be blamed for drawing tears too often from our eyes ; but that he has the power of commanding them, no man who has the lead fenfibility can queftion. His poems awake the tendered fympathies, and infpire the mod generous emotions No reader can rife from him without being warmed with the fentiments of humani- ty, virtue, and honour. But the excellency of thefe poems occafioned irt many perfons a doubt of their authenticity. Their* genuinenefs, however, has been very ably defended by Dr Blair and Lord Karnes, and warmly fupported by the author of the Gaelic A aiquities^ who has given the public fome more remains of Oflhm’s poetry. t Go tic An- Hguiiits, poem of ‘Jfrat Lai. Homer’s ideas were more charged, and his characters more diverfified. Offian’s ideas fewer, but of the kind nlted for poetry ; the bravery and generofity of he¬ roes, the tendernefs of lovers, and the attachment of nends. Homer is diffufe; Offian abrupt and ccncife. His images are a blaze of lightning, which flaffi and vanilh. Homer has more of impetuofity and fire ; Offian of a folemn and awful grandeur, in the pathe* tic, Homer has a great po wer; but Offian exerts that power much oftener, and has the charaaer of ten¬ dernefs more deeply imprinted on his works. No neW ketter. how to feize and melt the heart, v ith regard to digrfity of fentimertt, we muft be fur- pnlcd to find that the pre eminence muft clearly be given to the Celtic bard. This appears nowhere more remarkable than in the fentiments which he expreffies towards h.s enemies. “ Uthal fell beneath my fword, and the fons of Berrathon fled.—It was then I faw Dm in ms beauty, and the tear hung in my eye. i hou art fallen, young tree, I faid, with all thy beau- y round thee. Them art fallen on thy plains, and the field is tare. I he winds come from the defart, and there is no found in thy leaves! Lovely art thou in death, fon of car-borne Larthmore f.” His fup- pofition, that all the little feuds and differences of this life ffiould be forgot in a future ftate, and that thole who had once been foes would “ ftretch their arms to the fame ffiell in Loda,” gives us the higheft idea of the man as well as of the poet. “ Daughter o eauty, thou art low ! A ftrange ftiore receives thy the Shofts of Morven will open their halls hen they fce thee coming. Heroes around the feaft of dim Ms, in the midft of clouds, ffiall admire thee; and virgins fhall touch the harp of mill t.’’ « The feuds of other years by the mighty dead are forgotten. on theTrS T mCet in Pe3Ce’ ride together noife of h/f W’n|- N° Clan^ 0f the ^ no inal 9 ? ifperl’ 1 l heard ln the,'r Peaceful dwell- thdr Th uv Wh° °nce mixed in battIe . 1 here, Lochlm and Morven meet at the As the nature of our work will not allow us to treat this matter at full length, we ffiall only give a brief view of the arguments offered in fupport of the authenticity of thefe poems, referring oiir readers to the authors juft now mentioned and others, for fuller fatisfaftion. “ In ever7 Period of fociety (fays Dr Blair), human manners are a curious fpeftacle ; and the moft natural pictures of ancient manners are exhibited in the an.* cient poems of nations. Thefe make us acquainted with the notions and feelings of our fellow-creatures in the moft nttlefs ages ; difeovering what objects they admired, and what pleafures they purfued, before thofe refinements of fociety had taken place, which enlarge indeed, and diverfify the tranfa&ions, but dif- guife the manners mankind. Befides this, ancient poems have another merit with perfons of tafte. They promife fome of the higheft beauties of poetical writing. That ftate, in which human nature ffioots wild and free, though unfit for other improvements, certainly encourages the high exertions of fancy and paffion. In the infancy of focieties the paffions of men have nothing to reftrain them : their imagination has no¬ thing to check it. And as their feelings are ftrong, fo their language of itfelf affumes a poetical turn. Men never have ufed fo many figures of ftyle, as in thofe rude ages, when, befides a warm imagination to fuggeft lively images, the want of proper and pre* cife terms for the ideas they would exprefs, obliged them to have recourfe to circumlocution, metaphor, comparifon, and all thofe fubftituted forms of expref- fion, which give a poetical air to language. An A- merican chief, at this day, harangues at the head of his tribe in a more bold metaphorical ftyle than a modern European would adventure to ufe in an epic poem. r , Poetry has been faid to be more ancient than profe^ which, in a qualified fenfe, is true. Mufic or fong has been found coteval with fociety among the moft barbarous nations ; and the only fubje£ls which ctaild prompt men, in their firft rude ftate, to utter tneir thoughts in compofitions of any length, were fucb as 4 naturally OSS [ 527 ] OSS Oflun. naturally affumed the t@ne of poetry ; praifes of their ' gods, or of their anceilors ; eommeaiorations of their own warlike exploits ; or lamentations over their mif- fortunes. And before writing was invented, no other compofitions, except fongs or poems, could take fuch hold of the imagination and memory, as to be pre- ferved by oral tradition, and handed down from one race to another. “ Hence we may expedt to find poems among the an¬ tiquities of alknatfons. It is probable, too, that an extenfivc fearch would difcover a certain degree of re- femblance among all ihe moft ancient poetical pro- dudtions, from whatever country they have proceed¬ ed. in a fimilar flate of manners, fimilar objefts and paffions operating upon the imaginations of men will ftamp their productions with the fame general charac¬ ter. Some diverfity will, so doubt, be occafioned by climate and genius. But mankind never bear fuch re- fembling features as they do in the beginnings of fociety. What we call the oriental vein of poetry, becaufe the earlieft poetical productions have come to us from the ea!t, is probably no more oriental than oc¬ cidental ; it is charaCteriftical of an age rather than a country ; and belongs, in fome meafure, to all nations at a certain period. Of this the works of Ofiian feem to fumifh a remarkable proof. “ He appears clearly to have lived in a period w'hich enjoyed all the benefit I have juft now mentioned of traditionary poetry. The exploits of Fralhal, Tren- mor, and the other anceftors of Fingal, are fpoken of as familiarly known. Ancient bards are frequently al¬ luded to. In one remarkable pafiage, Offian deferibes himfelf as living in a fort of claffical age, enlightened by the memorials of former times, conveyed in the foiigs of bards, and points at a period of ignorance which lay beyond the reach of tradition. Offi n him¬ felf appears to have been endowed by nature with ex- quifite fenfibility ; prone to that tender melancholy which is fo often an attendant oa great genius; and fufceptible equally of ftrong and of foft emotions. He was not only a profeffed bard, but a warrior alfo, and the fon of the moft renowned hero and prince of his age. This formed a conjunction of circumftances, uncommonly favourable towards exalting the imagi¬ nation of a poet. “ The manners of Ofiian’s age wrere favourable to a poetical genius. Covetoufnefs and effeminacy were unknown. The cares of men were few. The great cbjeCt purfued by heroic fpirits, was, ‘ to receive their fame/ that is, to become worthy of being celebrated in the fongs of bards; and ‘ to have their names on the four grey ftones ' To die unlamented by a bard, was deemed fo great a misfortune as even to dilturb their ghofts in another ftate. In fuch times as thefe, in a country where poetry had been fo long cultivated, and fo highly honoured, is it any winder that among the race and fuccdlion of bards, one Homer fhould arife : a man who, endowed with a natural happy genius favoured by peculiar advantages of birth and condition : and meeting in the courfe of his life, with a variety of incidents proper to fire his imagination, and to touch his heart, Ihould attain a degree of emi¬ nence in poetry, worthy to draw the admiration of more refined ages V* Befides, his compofitions, when viewed in them- Offian. felves, have, we are told, all the internal marks of anti-■--ir",**i quity fo ftrongly impreffed upon them, that no reader of tafte and judgment can deny their claim to it. They exhibit fo lively a pi&ureof cuftoms which have difappeared for ages, as could be drawn only from, nature and real life. The features are fo diftinCb, that few portraits of the life continually paffing be¬ fore us are found to be drawn with fo much likenefs. The manners uniformly relate to a very early ftage of fociety; and no hint, no allulron to the arts, cuftoms, or manners, of a more advanced period, ap¬ pears throughout the poems. To that diftimftion of ranks, which is always found in adult focieties, the poet appears to have been a perfect ftranger. The firlt heroes prepare their own repafts, and indiferimi- nately condefcend to the moft menial fervices. Their quarrels arife from caufes generally flight, but in fuch a period extremely natural. A rivaKhip in love, an omiffion at a feaft, or an affront at a tournament, are often the foundation or a quarrel among fingle heroes. And the wars in which whole tribes are engaged, are carried on with a view, not to enlarge their territory, but to revenge perhaps the kilhng of a few deer on their mountains, or the taking forcibly away one of their women. Their occupation was war and hunt¬ ing ; and their chief ambition was to have their fame in the fongs of the bards. The notions of a future flate, exhibited in thTc poems, are likewife ftrongly marked with the charac¬ ter of antiquity. A creed fo uncommon that the ima¬ gination of a modern could not be fuppofed to grafp fo ftrong an idea of it from mere fancy, is uniformly fupported throughout. This creed is extremely iimple,. but admirably fuited to the times. The language too, and the fti uclure, of thefe poems,, bear the moft linking chara£ters of antiquity. The language is bold, animated, and metaphorical, fucli as it is found to be in all infact.Hates ; where the words, as well as the ideas and objecls, muft be few ; and where the language, like the imagination, is ftrong and undifeiplined. No abftra